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WO2020103701A1 - 一种无菌喷雾泵 - Google Patents

一种无菌喷雾泵

Info

Publication number
WO2020103701A1
WO2020103701A1 PCT/CN2019/116530 CN2019116530W WO2020103701A1 WO 2020103701 A1 WO2020103701 A1 WO 2020103701A1 CN 2019116530 W CN2019116530 W CN 2019116530W WO 2020103701 A1 WO2020103701 A1 WO 2020103701A1
Authority
WO
WIPO (PCT)
Prior art keywords
spray
piston
main
ring portion
valve
Prior art date
Application number
PCT/CN2019/116530
Other languages
English (en)
French (fr)
Inventor
邓云化
Original Assignee
深圳博纳精密给药系统股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳博纳精密给药系统股份有限公司 filed Critical 深圳博纳精密给药系统股份有限公司
Priority to US18/019,946 priority Critical patent/US11969744B2/en
Publication of WO2020103701A1 publication Critical patent/WO2020103701A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/006—Sprayers or atomisers specially adapted for therapeutic purposes operated by applying mechanical pressure to the liquid to be sprayed or atomised
    • A61M11/007—Syringe-type or piston-type sprayers or atomisers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00444—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means with provision for filtering or cleaning the air flow drawn into the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/75—General characteristics of the apparatus with filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B05B11/0067—Lift valves having a valve seat located downstream the valve element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0075—Two outlet valves being placed in a delivery conduit, one downstream the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers

Definitions

  • the invention relates to the storage field of liquids (such as medicinal liquids, liquid cosmetics, liquid cleaning agents, etc.), in particular to a sterile spray pump for ejecting liquids in containers.
  • liquids such as medicinal liquids, liquid cosmetics, liquid cleaning agents, etc.
  • a spray pump is a pump that sprays a substance in a liquid state in a spray state when the user presses it.
  • the spray pump When the spray pump is used to spray a medical liquid, the spray pump usually has a sterility requirement.
  • spray pumps At present, there are various forms of spray pumps on the market, but they all have the following disadvantages:
  • Ordinary spray pumps are mostly open nozzle structures. After use, the air directly contacts the chemical liquid at the nozzle, and the chemical liquid remains inside the nozzle. The residual chemical liquid is prone to deteriorate after prolonged contact with the air. The liquid medicine remaining during use is sprayed again, directly affecting the use effect.
  • the ordinary spray pumps are designed with a return air structure, which is used to supplement the external air into the container during the use of the spray pump, otherwise the spray pump cannot work normally, but the external air directly enters the container to the liquid medicine in the container. create pollution.
  • Aseptic spray pumps are mostly in the form of vacuum pumps, and the volume of liquid medicine in a container with a vacuum pump installed must not exceed 2/3 of the container, and the container capacity is subject to certain restrictions.
  • the dosage will be unstable; at the same time, as the number of spray pumps increases, the internal pressure of the container will continue to increase, resulting in the gradual attenuation of the spray pump spray dose, which will lead to the use of all the liquid in the container.
  • the object of the present invention is to provide a sterile spray pump that can supplement external air into the container when the spray pump is working normally, so that the capacity of the container, the amount of drug solution in the container, And the spray dose of the spray pump is not limited.
  • the present invention provides a sterile spray pump including a main piston for connecting to a container, a spray head movably mounted on the main piston, and a sub piston fixed in the spray head, the sub piston
  • the main piston is movably mounted up and down, and a first compression space and a second compression space are formed between the auxiliary piston and the main piston.
  • the main piston has a main suction chamber communicating with the inner cavity of the container, and a main suction chamber A supplementary gas port communicating with the suction chamber, the supplementary gas port is in communication with the second compression space, and a filter element covering the supplementary gas port is fixed in the supplementary gas port, the secondary piston has a secondary suction chamber communicating with the main suction chamber, The first exhaust member and the second exhaust member; when the nozzle is not pressed down, the main piston and the auxiliary piston are sealed; the nozzle is pressed down and the main piston and the first exhaust member and the second exhaust member After the contact, the first compression space communicates with the main liquid suction chamber through the first exhaust member, and the second compression space communicates with the outside of the sterile spray pump through the second exhaust member.
  • a filter connector provided in the main liquid suction chamber is fixed in the main piston, the air supply port is opened in the filter connector, and the filter element is a filter membrane fixed on the filter connector.
  • the main piston has a main inner ring portion and a main outer ring portion located on the outer circumferential side of the main inner ring portion
  • the sub piston has a sub inner ring portion and a sub outer ring portion located on the outer circumferential side of the sub inner ring portion
  • the upper end of the main inner ring portion extends between the auxiliary outer ring portion and the auxiliary inner ring portion
  • the first compression space is formed between the three
  • the lower end of the auxiliary outer ring portion extends into the main inner ring portion
  • the second compression space is formed between the main outer ring portion and the three.
  • the main piston is provided at the upper end of the main inner ring portion with a first seal ring sealingly connected to the outer peripheral surface of the auxiliary inner ring portion, and at the upper end of the main outer ring portion is provided with an outer peripheral surface of the auxiliary outer ring portion
  • a second sealing ring that is hermetically connected the first exhaust member includes at least two first ribs fixed on the outer circumferential surface of the sub-inner ring portion and arranged in the circumferential direction of the sub-inner ring portion, and formed in the phase
  • the second exhaust member includes at least two first exhaust channels fixed on the outer circumferential surface of the auxiliary outer ring portion and arranged along the circumferential direction of the auxiliary outer ring portion Two ribs and a second exhaust channel formed between two adjacent second ribs; when the spray head is pressed down, the first ribs open the first sealing ring to pass the first compression space
  • the first exhaust passage communicates with the main liquid suction chamber, and the second rib push
  • the aseptic spray pump further includes a first return spring sleeved around the outer periphery of the main outer ring portion and the auxiliary outer ring portion, and the upper and lower ends of the first return spring respectively contact the auxiliary piston and the main piston.
  • an air passage is formed between the main piston and the spray head, a ring of radially outwardly protruding upper engaging portions is provided on the outer periphery of the main piston, and a ring of radially inwardly protruding is provided on the inner periphery of the spray head
  • the clamping part when the spray head is not pressed down, the upper clamping part is in contact with the lower clamping part, and the lower clamping part and the main piston are sealed; after pressing the spray head down, the upper clamping part and The lower clamping part is separated and the seal between the lower clamping part and the main piston is released.
  • One end of the air passage communicates with the outside of the sterile spray pump, and the other end communicates with the second compression space through the second exhaust member .
  • the sterile spray pump further includes a spray nozzle fixed in the spray head, a sealing valve movably installed between the spray nozzle and the auxiliary piston, and a one-way valve assembly provided at the upper end of the auxiliary suction chamber,
  • the spray head has a spray port, a spray channel is formed between the auxiliary piston, the spray head, the sealing valve and the spray nozzle, and the one-way valve assembly is used to connect or block the spray channel and the auxiliary liquid suction chamber; when the spray channel When not filled with liquid, the spray nozzle, the spray head and the sealing valve are sealed to block the spray channel and the spray port; when the spray channel is filled with liquid, the sealing valve moves downward to make the spray channel and spray Mouth communication.
  • the sealing valve has a valve lower section extending into the auxiliary piston, a second return spring is sleeved on the outer periphery of the valve lower section, and the upper and lower ends of the second return spring are respectively connected to the sealing valve and The secondary pistons are in contact.
  • the sealing valve has a valve upper section extending into the spray nozzle.
  • the peripheral surface between the valve upper section and the spray nozzle is sealed, the spray nozzle and the spray head The peripheral surface is sealed, and the end surface between the spray head and the sealing valve is sealed.
  • the sealing valve is provided with a pushing surface located below the sealing connection between the sealing valve and the spray nozzle, and the pushing surface is a tapered surface whose outer end extends obliquely outward and downward.
  • the one-way valve assembly includes a valve port opened on the auxiliary piston, a valve seat sealing surface provided on the inner side of the valve port and provided on the auxiliary piston, and a valve core movably installed in the auxiliary piston,
  • the valve port communicates with the injection channel; when the auxiliary suction chamber is not filled with liquid, the valve core is sealingly connected to the sealing surface of the valve seat, and the valve core blocks the valve port and the auxiliary suction chamber; when the auxiliary suction When the liquid chamber is filled with liquid, the valve core moves upward, and the valve port communicates with the auxiliary liquid suction chamber.
  • sealing surface of the valve seat is a tapered surface whose inner end extends obliquely inward and downward, and the valve core is a stainless steel bead.
  • the sterile spray pump according to the present invention has the following beneficial effects:
  • the normal operation of the sterile spray pump is achieved through the first compression space, the second compression space, the first exhaust member, the second exhaust member, and the air supplement port, so that the sterile spray pump can suck the liquid in the container, And the liquid is sprayed out, because it can supplement the outside air into the container normally, instead of using a vacuum pump, the sterile spray pump in this application is not affected by the amount of loading and the number of uses, so that the container capacity and the medicine in the container
  • the liquid volume and the spray dose of the spray pump are not limited; and the filter element meets the air exchange for the normal operation of the sterile spray pump, and avoids pollution and reaches the requirements of sterility.
  • 1 to 3 are schematic structural diagrams of the sterile spray pump in different states in this application.
  • FIG. 4 is a schematic structural view of the main piston and the filter connector in this application.
  • FIG. 5 is a schematic structural diagram of the sub piston and one-way valve assembly in the present application.
  • FIG. 6 is a schematic structural diagram of a spray head in this application.
  • FIG. 7 is a schematic structural diagram of a sealed valve in this application.
  • FIG. 8 is a schematic structural view of a spray nozzle in the present application.
  • the up and down directions in the following embodiments are defined as follows: the end of the sterile spray pump connected to the container is defined as the lower end, and the end of the sterile spray pump with the injection port 402 is defined as the upper end, and the up and down directions are both The axial direction of the bacteria spray pump.
  • the sterile spray pump provided by the present application includes a main piston 30, a spray head 40 and a sub piston 50; wherein, the lower end of the main piston 30 is used to connect with the container, and the main piston 30 There is a main liquid suction chamber 301 extending up and down, and a radially extending air supply port 302, the lower end of the main liquid suction chamber 301 communicates with the inner cavity of the container, the inner end of the air suction port 302 communicates with the main liquid suction chamber 301; the spray head 40
  • the lower part of the can be moved up and down on the outer periphery of the main piston 30; the upper end of the sub piston 50 is fixed in the upper part of the spray head 40, the sub piston 50 moves up and down with the spray head 40, so the lower end of the sub piston 50 can be installed up and down
  • the sub piston 50 has a sub suction chamber 501, a first exhaust member 502, and a second exhaust member 503.
  • the sub suction chamber 501 extends up and down, and the lower end of the sub suction chamber 501 is connected to the main
  • the upper end of the suction chamber 301 is in communication; a first compression space 10 and a second compression space 20 are formed between the auxiliary piston 50 and the main piston 30, and the lower end of the second compression space 20 communicates with the outer end of the air supply port 302, and the air supply port A filter element 601 covering the air supply port 302 is fixed in the 302.
  • the spray head 40 Press the spray head 40 down to the lowermost end, as shown in FIG. 2, the spray head 40 drives the auxiliary piston 50 to move down relative to the main piston 30 together, so that the main piston 30 simultaneously with the first exhaust member 502 and the second on the auxiliary piston 50
  • the exhaust member 503 abuts, at this time, the first compression space 10 communicates with the main liquid suction chamber 301 through the first exhaust member 502, and the second compression space 20 communicates with the outside of the sterile spray pump through the second exhaust member 503 .
  • the nozzle 40 is pressed down to the lowermost end for the first time, the compressed air in the first compression space 10 passes through the first exhaust member 502 and the main liquid suction chamber 301 in order to be discharged into the container, and at the same time, the inner cavity of the container
  • the main suction chamber 301, the supplementary air port 302, the second exhaust member 503 and the exterior of the sterile spray pump are sequentially communicated with each other, and the compressed air in the container sequentially passes through the main suction chamber 301, the supplementary gas port 302 and the second exhaust member 503
  • the pressure in the container is balanced with the external pressure; release the spray head 40, the spray head 40 drives the auxiliary piston 50 to rebound upward, as shown in FIG.
  • the first compression space 10, the second compression space 20, and A negative pressure is formed in the main liquid suction chamber 301 to suck out the liquid in the container; the second downward pressing of the spray head 40 to the lowermost end, and each subsequent subsequent downward pressing of the spray head 40 to the lowermost end, the first exhaust member 502 and The second exhaust member 503 will balance the pressure in the container with the external pressure, and the external air will be replenished into the container through the second exhaust member 503, the second compression space 20, the air inlet 302, and the main liquid suction chamber 301 in sequence; When the spray head 40 is released, the liquid in the container is sucked out, and the liquid is continuously circulated until the liquid is sprayed from the spray port 402 at the upper end of the spray head 40.
  • the present application realizes the normal operation of the sterile spray pump through the first compression space 10, the second compression space 20, the first exhaust member 502, the second exhaust member 503, and the supplemental air port 302, so that the sterile spray pump can suck The liquid in the container and the liquid is ejected. Because it can supplement the outside air to the container normally, instead of using a vacuum pump, the sterile spray pump in this application is not affected by the amount of loading and the number of uses, so that the container The capacity, the amount of drug solution in the container, and the spray dose of the spray pump are not limited; and the filter element 601 meets the air exchange for the normal operation of the sterile spray pump, and avoids pollution and reaches the requirements of sterility.
  • the preferred connection structure between the main piston 30 and the container, and between the main piston 30 and the supplemental gas port 302 is: as shown in FIGS. 1 and 4, the main piston 30 is fixed in the main liquid suction chamber 301
  • the filter connector 60, the air supply port 302 is opened in the filter connector 60
  • the filter element 601 is a filter membrane fixed to the filter connector 60
  • the filter membrane is ventilated but not water, and isolates external contaminants from entering the container when the external air is supplemented into the container internal.
  • the filter connector 60 has a connector inner cavity 602, and the connector inner cavity 602 is a part of the main liquid suction chamber 301.
  • the lower end of the filter connector 60 is tightly fixedly connected to a pipette 110, and the upper end of the pipette 110 is The inner cavity 602 of the connector is in communication, and the lower end extends into the liquid in the container.
  • a part of the sub piston 50 can be inserted into the inner cavity 602 of the filter connector 60 so as to move up and down.
  • the filter membrane is fixed in a pressure sleeve 603 which is fixed in the air supply port 302 so that the filter membrane is fixed in the air supply port 302.
  • the main piston 30 has a main inner ring portion 303 extending vertically and a main inner ring portion 303
  • the main outer ring portion 304 on the outer circumferential side and extending up and down, the main inner ring portion 303 is connected to the main outer ring portion 304 through a horizontally extending first connecting portion 308;
  • the sub piston 50 has a sub inner ring portion 504 extending up and down, and a A secondary outer ring portion 505 that extends up and down on the outer circumferential side of the inner ring portion 504.
  • the secondary inner ring portion 504 is connected to the secondary outer ring portion 505 through a horizontally extending second connecting portion 506; the upper end of the main inner ring portion 303 extends into the secondary outer ring
  • the first compression space 10 is formed between the portion 505 and the auxiliary inner ring portion 504, and between the three, the lower end of the auxiliary outer ring portion 505 extends between the main inner ring portion 303 and the main outer ring portion 304, and one of the three
  • the second compression space 20 is formed between them, so both the first compression space 10 and the second compression space 20 are annular chambers.
  • the main piston 30 has a first stepped portion 309 formed at the connection between the main inner ring portion 303, the main outer ring portion 304, and the first connection portion 308.
  • the first stepped portion 309 and the filter connector 60 The two stepped portions 604 abut and form a limit when the filter connector 60 is inserted upward into the main piston 30.
  • the main piston 30 is provided at the upper end of the main inner ring portion 303 with a first seal ring 305 sealingly connected to the outer peripheral surface of the sub inner ring portion 504 and the main outer ring
  • the upper end of the ring portion 304 is provided with a second sealing ring 306 that is sealingly connected to the outer peripheral surface of the sub-outer ring portion 505.
  • the first exhaust member 502 includes two channels fixed on the outer peripheral surface of the sub-inner ring portion 504 along the sub-inner A first rib arranged circumferentially in the ring portion 504 and a first exhaust passage formed between two adjacent first ribs
  • the second exhaust member 503 includes two channels fixed on the auxiliary outer ring portion 505 Second ribs arranged on the outer circumferential surface of the outer circumferential portion and along the circumferential direction of the auxiliary outer ring portion 505, and a second exhaust passage formed between two adjacent second ribs.
  • the first seal ring 305 is away from the first rib, which seals between the main inner ring portion 303 of the main piston 30 and the sub inner ring portion 504 of the sub piston 50. Furthermore, the connector inner cavity 602 of the first compression space 10 and the filter connector 60 is blocked, that is, the first compression space 10 and the main liquid suction chamber 301 are blocked, so that the first compression space 10 and the interior of the container are not connected; The second sealing cavity is far away from the second rib, which seals the main outer ring portion 304 of the main piston 30 and the auxiliary outer ring portion 505 of the sub piston 50, thereby blocking the second compression space 20 from the outside.
  • the spray head 40 is pressed down to the lowermost end, as shown in FIG.
  • the spray head 40 drives the auxiliary piston 50 to move down, and the first seal ring 305 is pushed up by the first rib, so that the first compression space 10 passes through the first exhaust passage Communicate with the connector inner cavity 602, that is, make the first compression space 10 communicate with the main liquid suction chamber 301 through the first exhaust passage, and then communicate the first compression space 10 and the inside of the container; meanwhile, the second sealed cavity is The protruding ribs open, so that the second compression space 20 communicates with the outside of the sterile spray pump through the second exhaust passage, thereby making the inside of the container communicate with the outside and balance the pressure inside and outside the container.
  • the preferred connection structure between the main piston 30, the sub piston 50 and the spray head 40 is: as shown in FIGS. 1, 4 and 5, the sub piston 50 is provided with a bending extension on the outer peripheral side of the sub outer ring portion 505 A third connecting portion 507, a first clamping slot 508 is formed between the third connecting portion 507 and the sub-outer ring portion 505; the inner wall of the spray head 40 is provided with a fourth connecting portion 403 extending downward
  • the four connecting portions 403 are snap-fitted in the first snap grooves 508 of the sub-piston 50, and then the sub-piston 50 is fixed to the spray head 40.
  • the main piston 30 also has a fifth connecting portion 310 extending horizontally outward from the lower end of the main outer ring portion 304, a circle of the piston main body portion 311 extending upward from the outer end of the fifth connecting portion 310, and the slave piston main body portion 311
  • the upper end of the sixth connecting portion 312 extending horizontally outward, the piston connecting portion 313 extending downward from the outer end of the sixth connecting portion 312, the first formed between the main outer ring portion 304 and the piston body portion 311
  • the chamber 314 and a third stepped portion 315 fixed to the bottom of the first chamber 314, the first chamber 314 is provided with a first return spring 120 sleeved around the outer periphery of the main outer ring portion 304 and the auxiliary outer ring portion 505 , The upper and lower ends of the first return spring 120 are in contact with the third connecting portion 507 of the auxiliary piston 50 and the third stepped portion 315 of the main piston 30; when the spray head 40 is pressed downward, the first return spring
  • the lower part of the nozzle 40 has a nozzle inner ring portion 404, a nozzle outer ring portion 405 located on the outer peripheral side of the nozzle inner ring portion 404, and a nozzle inner ring portion 404 and the nozzle outer
  • the head inner ring portion 404 is located on the inner peripheral side of the piston body portion 311
  • the head outer ring portion 405 is located on the outer peripheral side of the piston connecting portion 313, so the piston body portion in the main piston 30 311, the sixth connection portion 312 and the piston connection portion 313 are located in the second chamber 406 of the spray head 40.
  • the area between the head inner ring portion 404 and the main outer ring portion 304, the gap between the head inner ring portion 404 and the piston body portion 311, and a portion of the second chamber of the head 40 above the sixth connection portion 312 406, and the gap between the outer ring portion 405 of the spray head and the piston connecting portion 313 forms an air channel 130, so an air channel 130 is formed between the main piston 30 and the spray head 40;
  • the main piston 30 is provided on the outer periphery of the upper end of the piston connecting portion 313
  • the sterile spray pump further includes a spray nozzle 70 fixed in the spray head 40, a sealing valve 80 movably installed between the spray nozzle 70 and the sub piston 50, and a sub suction A check valve assembly 90 at the upper end of the liquid chamber 501, a spray port 402 at the upper end of the spray head 40, a spray passage 140 is formed between the sub piston 50, the spray head 40, the sealing valve 80 and the spray nozzle 70, and the check valve assembly 90 is used for communication Or, the lower end of the ejection channel 140 and the auxiliary liquid suction chamber 501 are blocked.
  • the liquid gradually fills the connector cavity 602 and the auxiliary liquid suction cavity 501; when the auxiliary liquid suction cavity 501 is not filled with liquid, The check valve assembly 90 is in a closed state to block the ejection channel 140 and the auxiliary liquid suction chamber 501; when the auxiliary suction chamber 501 is filled with liquid, the pressure of the liquid forces the check valve assembly 90 to open to communicate with the ejection channel 140 With the auxiliary suction chamber 501, the liquid gradually fills the spray channel 140; when the spray channel 140 is not filled with liquid, the spray nozzle 70, the spray head 40 and the sealing valve 80 are sealed to block the spray channel 140 The upper end of the spray channel 402; when the spray channel 140 is filled with liquid, the pressure of the liquid forces the sealing valve 80 to move downward, so that the upper end of the spray channel 140 communicates with the spray port 402, and the liquid passes through the spray nozzle 70 to produce mist And the internal pressure disappears
  • the check valve assembly 90 includes a valve port 901 opened on the sub inner ring portion 504 of the sub piston 50, and a sub inner ring portion 504 provided inside the valve port 901 and provided on the sub piston 50
  • the valve seat sealing surface 902 is a tapered surface whose inner end extends obliquely inward and downward, and the valve core 903 is a stainless steel ball;
  • the valve The port 901 communicates with the lower end of the ejection channel 140; when the sub-suction chamber 501 is not filled with liquid, the spool 903 is sealingly connected to the valve seat sealing surface 902, so the spool 903 blocks the valve port 901 and the sub-suction chamber 501 To block the ejection channel 140 and the auxiliary liquid suction chamber 501; when the auxiliary liquid suction chamber 501 is filled with liquid, the liquid pressure forces the valve core 903 to move upward
  • the sealing valve 80 has a valve lower section 801 extending into the secondary piston 50, a valve upper section 802 extending into the spray nozzle 70, and a valve lower section 801
  • the valve connection portion 804 that extends horizontally outward from the connection with the upper valve portion 802, the valve outer ring portion 805 that extends downward from the outer end of the valve connection portion 804 and is located on the outer periphery of the valve lower portion 801, and the auxiliary inner ring portion in the sub piston 50
  • the upper end of 504 extends between the valve outer ring portion 805 and the valve lower section 801, and at the same time, the sub piston 50 is provided with a fourth stepped portion 509 on the inner circumference of the sub inner ring section 504, and the outer circumference of the valve lower section 801 is provided with
  • the second return spring 150 on the inner peripheral side of the auxiliary inner ring portion 504, the upper and lower ends of the second return spring 150 respectively abut the valve connecting portion 804 in the seal valve 80 and the fourth
  • the outer peripheral surface of the upper valve portion 802 of the sealing valve 80 is provided with a pushing surface 803 located below the sealing connection between the sealing valve 80 and the spray nozzle 70, and the pushing surface 803 is the outer end A tapered surface that extends obliquely outward and downward.
  • the preferred connection structure between the spray head 40 and the spray nozzle 70 is: as shown in FIGS. 1, 6 and 8, the inner wall of the upper end of the spray head 40 is provided with a seventh connecting portion 407 extending downward; the spray nozzle 70 An eighth connecting portion 701 bent and extending is provided on the outer periphery of the nozzle, and a second clamping groove 702 is formed between the eighth connecting portion 701 and the spray nozzle 70; the seventh connecting portion 407 of the spray head 40 is engaged with the first nozzle of the spray nozzle 70 In the second slot 702, the spray nozzle 70 is further fixed to the spray head 40.
  • the sealing structure between the spray nozzle 70, the spray head 40 and the sealing valve 80 is preferably: the sealing valve 80 is provided with a first sealing surface 806 on the outer periphery of the upper valve section 802, the spray nozzle The inner periphery of 70 is provided with a second sealing surface 703. The first sealing surface 806 and the second sealing surface 703 cooperate to form a peripheral surface seal between the upper valve portion 802 of the sealing valve 80 and the spray nozzle 70; A third sealing surface 704 is provided on the outer periphery, and a fourth sealing surface 408 is provided on the inner periphery of the spray head 40.
  • the third sealing surface 704 and the fourth sealing surface 408 cooperate to form a circumferential seal between the spray nozzle 70 and the spray head 40;
  • the upper end surface of the upper valve section 802 of the sealing valve 80 has a fifth sealing surface 807, and the lower end surface of the top of the spray head 40 has a sixth sealing surface 409.
  • the fifth sealing surface 807 and the sixth sealing surface 409 cooperate to make the spray head 40 and the seal End seals are formed between the valves 80.
  • the sub-inner ring 504 and The upper section of the auxiliary outer ring portion 505, the gap between the valve outer ring portion 805 and the spray head 40, and the gap between the valve outer ring portion 805 and the spray nozzle 70 are sequentially connected to form a spray channel 140, and the upper end of the spray channel 140 extends To the injection port 402.
  • the spray head 40 is not pressed down, there is air in the first compression space 10 and the second compression space 20, and the liquid in the container is not drawn into the connector cavity 602 In the suction chamber 301), the main piston 30 and the auxiliary piston 50 are sealed, the main piston 30 and the spray head 40 are sealed, the check valve assembly 90 in the auxiliary piston 50 is closed, and the circumference between the sealing valve 80 and the spray nozzle 70 is closed.
  • the spray head 40 Press the spray head 40 down to the lowermost end for the first time. As shown in FIG. 2, the spray head 40 drives the spray nozzle 70 and the auxiliary piston 50 to move down together.
  • the return spring 120 is compressed, and the seal between the nozzle 40 and the main piston 30 is released; the first sealing ring 305 is pushed open by the first rib, and the compressed air in the first compression space 10 passes through the first exhaust passage
  • the inner cavity 602 of the container is discharged into the container; at the same time, the second sealed cavity is pushed open by the second rib, and the pressure inside and outside the container is balanced, so the compressed air in the container is sequentially passed through the connector inner cavity 602, the air inlet 302, and the second compression
  • the space 20, the second exhaust passage and the air passage 130 are then discharged to the outside of the sterile spray pump.
  • the spray nozzle 70 produces an atomization effect and is sprayed from the spray port 402 on the spray head 40; after the liquid is sprayed, the internal pressure disappears, and the spray nozzle 70, the spray head 40, and the sealing valve 80 are sealed again to circulate.
  • the present application realizes the normal operation of the sterile spray pump through the first compression space 10, the second compression space 20, the first exhaust member 502, the second exhaust member 503, and the air supplement port 302, so that the sterile spray The pump can suck the liquid in the container and eject the liquid. Because it can supplement the outside air into the container normally, instead of using a vacuum pump, the sterile spray pump in this application is not affected by the amount of loading and the number of uses. , So that the container capacity, the amount of drug solution in the container, and the spray dose of the spray pump are not limited, and the utilization rate of the container volume is improved; and the filter element 601 meets the air exchange for the normal operation of the sterile spray pump, and avoids pollution To meet the requirements of sterility.
  • the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

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Abstract

一种无菌喷雾泵，包括主活塞（30）、喷头（40）、以及固定在喷头（40）内的副活塞（50），副活塞（50）可上下移动地安装于主活塞（30）、且副活塞（50）和主活塞（30）之间形成有第一压缩空间（10）和第二压缩空间（20），主活塞（30）内具有与容器的内腔相通的主吸液腔（301）、以及与主吸液腔（301）相通的补气口（302），补气口（302）与第二压缩空间（20）连通、且补气口（302）中固设有覆盖补气口（302）的过滤元件（601），副活塞（50）具有与主吸液腔（301）相通的副吸液腔（501）、第一排气构件（502）、以及第二排气构件（503）；向下按压喷头（40）且主活塞（30）与第一排气构件（502）和第二排气构件（503）抵接后，第一压缩空间（10）通过第一排气构件（502）和主吸液腔（301）相通，第二压缩空间（20）通过第二排气构件（503）与无菌喷雾泵的外部相通。该无菌喷雾泵能够将外部空气正常补充至容器内，无菌喷雾泵不受装量和使用次数的影响。

Description

一种无菌喷雾泵 技术领域
本发明涉及液体(比如药液、液态化妆品、液态清洗剂等)存放领域，特别是涉及一种用于将容器内液体喷出的无菌喷雾泵。
背景技术
喷雾泵是当用户按压时以喷雾状态喷射液体状态物质的泵，当喷雾泵用于喷射药液时，喷雾泵通常具有无菌的要求。目前，市面上存在各种形式的喷雾泵，但都存在下述缺点：
1、普通的喷雾泵多为开放式喷头的结构，在使用后空气直接与喷头处的药液接触，且药液残留在喷头内部，残留的药液与空气长时间接触易变质，且在下次使用时残留的药液又再次被喷出，直接影响使用效果。
2、普通的喷雾泵都设计有回气结构，用于在喷雾泵使用过程中将外部空气补充至容器内，否则喷雾泵无法正常工作，但外部空气直接进入容器内会对容器内的药液造成污染。
3、无菌喷雾泵大多采用真空泵的形式，而安装有真空泵的容器内的药液装量不得超过容器的2/3，且容器容量受一定限制，如容器容量偏大内部负压过大，会导致剂量不稳定；同时，随着喷雾泵使用次数的增加，容器内部压力不断加大，导致喷雾泵喷射剂量逐渐衰减，进而导致容器内液体无法全部使用完。
发明内容
鉴于以上所述现有技术的缺点，本发明的目的在于提供一种无菌喷雾泵，其在喷雾泵正常工作时能够使外部空气补充至容器内，使容器容量、容器内药液装量、以及喷雾泵喷射剂量不受限制。
为实现上述目的，本发明提供一种无菌喷雾泵，包括用于和容器相连接的主活塞、可上下移动地安装于主活塞的喷头、以及固定在喷头内的副活塞，所述副活塞可上下移动地安装于主活塞、且副活塞和主活塞之间形成有第一压缩空间和第二压缩空间，所述主活塞内具有与容器的内腔相通的主吸液腔、以及与主吸液腔相通的补气口，所述补气口与第二压缩空间连通、且补气口中固设有覆盖补气口的过滤元件，所述副活塞具有与主吸液腔相通的副吸液腔、第一排气构件、以及第二排气构件；未向下按压喷头时，所述主活塞和副活塞之间密封；向下按压喷头且主活塞与第一排气构件和第二排气构件抵接后，所述第一压缩空间通过第一排气构件和主吸液腔相通，所述第二压缩空间通过第二排气构件与无菌喷雾泵的外部相通。
进一步地，所述主活塞内固定有设在主吸液腔中的过滤连接器，所述补气口开设在过滤连接器中，所述过滤元件为固定于过滤连接器的过滤膜。
进一步地，所述主活塞具有主内环部、以及位于主内环部外周侧的主外环部，所述副活塞具有副内环部、以及位于副内环部外周侧的副外环部，所述主内环部的上端伸入副外环部和副内环部之间、且三者之间形成所述第一压缩空间，所述副外环部的下端伸入主内环部和主外环部之间、且三者之间形成所述第二压缩空间。
进一步地，所述主活塞在主内环部的上端设有与副内环部的外周面密封连接的第一密封圈、以及在主外环部的上端设有与副外环部的外周面密封连接的第二密封圈，所述第一排气构件包括至少两道固设在副内环部的外周面上且沿副内环部周向排布的第一凸筋、以及形成在相邻两道第一凸筋之间的第一排气通道，所述第二排气构件包括至少两道固设在副外环部的外周面上且沿副外环部周向排布的第二凸筋、以及形成在相邻两道第二凸筋之间的第二排气通道；当向下按压喷头后，所述第一凸筋顶开第一密封圈、使第一压缩空间通过第一排气通道与主吸液腔连通，所述第二凸筋顶开第二密封圈、使第二压缩空间通过第二排气通道与无菌喷雾泵的外部连通。
进一步地，所述无菌喷雾泵还包括套设在主外环部和副外环部外周的第一复位弹簧，所述第一复位弹簧的上下两端分别与副活塞和主活塞相抵接。
进一步地，所述主活塞和喷头之间形成有空气通道，所述主活塞的外周设有一圈径向外突的上卡接部，所述喷头的内周设有一圈径向内突的下卡接部；未向下按压喷头时，所述上卡接部与下卡接部相抵接、且下卡接部与主活塞之间密封；向下按压喷头后，所述上卡接部与下卡接部相分离、且解除下卡接部与主活塞之间的密封，所述空气通道的一端与无菌喷雾泵的外部连通、另一端通过第二排气构件与第二压缩空间连通。
进一步地，所述无菌喷雾泵还包括固定在喷头内的喷雾嘴、可上下移动地安装在喷雾嘴和副活塞之间的密封阀、以及设在副吸液腔上端的单向阀组件，所述喷头具有喷射口，所述副活塞、喷头、密封阀和喷雾嘴之间形成有喷射通道，所述单向阀组件用于连通或封堵喷射通道与副吸液腔；当喷射通道中未填充满液体时，所述喷雾嘴、喷头和密封阀之间密封、以封堵喷射通道和喷射口；当喷射通道中填充满液体时，所述密封阀向下移动、使喷射通道与喷射口相通。
进一步地，所述密封阀上具有一段伸入副活塞中的阀下段部，所述阀下段部的外周套设有第二复位弹簧，所述第二复位弹簧的上下两端分别与密封阀和副活塞相抵接。
进一步地，所述密封阀上具有一段伸入喷雾嘴中的阀上段部，当喷射通道中未填充满液 体时，所述阀上段部与喷雾嘴之间周面密封，所述喷雾嘴与喷头之间周面密封，所述喷头与密封阀之间端面密封。
进一步地，所述密封阀上设有一段位于密封阀和喷雾嘴密封连接处下方的推动面，所述推动面为外端向外下方倾斜延伸的锥面。
进一步地，所述单向阀组件包括开设在副活塞上的阀口、设在阀口内侧且设在副活塞上的阀座密封面、以及可上下移动地安装在副活塞中的阀芯，所述阀口与喷射通道相通；当副吸液腔中未填充满液体时，所述阀芯与阀座密封面密封连接，所述阀芯封堵阀口和副吸液腔；当副吸液腔中填充满液体时，所述阀芯上移，所述阀口和副吸液腔相通。
进一步地，所述阀座密封面为内端向内下方倾斜延伸的锥面，所述阀芯为一不锈钢珠。
如上所述，本发明涉及的无菌喷雾泵，具有以下有益效果：
本申请中，通过第一压缩空间、第二压缩空间、第一排气构件、第二排气构件以及补气口实现无菌喷雾泵的正常工作，使得无菌喷雾泵能够吸取容器内的液体、并将液体喷出，由于其能够将外部空气正常补充至容器内，而不是采用真空泵形式，故本申请中的无菌喷雾泵不受装量和使用次数的影响，使容器容量、容器内药液装量、以及喷雾泵喷射剂量不受限制；并且通过过滤元件满足无菌喷雾泵正常工作的空气交换，又避免了污染，达到无菌的要求。
附图说明
图1至图3为本申请中无菌喷雾泵在不同状态下的结构示意图。
图4为本申请中主活塞和过滤连接器的结构示意图。
图5为本申请中副活塞和单向阀组件的结构示意图。
图6为本申请中喷头的结构示意图。
图7为本申请中密封阀的结构示意图。
图8为本申请中喷雾嘴的结构示意图。
元件标号说明
10                     第一压缩空间
20                     第二压缩空间
30                     主活塞
301                    主吸液腔
302                    补气口
303                    主内环部
304                    主外环部
305                    第一密封圈
306                    第二密封圈
307                    上卡接部
308                    第一连接部
309                    第一台阶部
310                    第五连接部
311                    活塞主体部
312                    第六连接部
313                    活塞连接部
314                    第一腔室
315                    第三台阶部
40                     喷头
401                    下卡接部
402                    喷射口
403                    第四连接部
404                    喷头内环部
405                    喷头外环部
406                    第二腔室
407                    第七连接部
408                    第四密封面
409                    第六密封面
50                     副活塞
501                    副吸液腔
502                    第一排气构件
503                    第二排气构件
504                    副内环部
505                    副外环部
506                    第二连接部
507                    第三连接部
508                    第一卡槽
509                    第四台阶部
60                     过滤连接器
601                    过滤元件
602                    连接器内腔
603                    压套
604                    第二台阶部
70                     喷雾嘴
701                    第八连接部
702                    第二卡槽
703                    第二密封面
704                    第三密封面
80                     密封阀
801                    阀下段部
802                    阀上段部
803                    推动面
804                    阀连接部
805                    阀外环部
806                    第一密封面
807                    第五密封面
90                     单向阀组件
901                    阀口
902                    阀座密封面
903                    阀芯
110                    吸液管
120                    第一复位弹簧
130                    空气通道
140                    喷射通道
150                    第二复位弹簧
具体实施方式
以下由特定的具体实施例说明本发明的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。
须知，本说明书附图所绘的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。
为便于叙述，以下实施例中上下方向定义如下：将无菌喷雾泵中与容器相连的一端定义为下端，将无菌喷雾泵中设有喷射口402的一端定义为上端，上下方向同时为无菌喷雾泵的轴向。
如图1、以及图4至图6所示，本申请提供的无菌喷雾泵包括主活塞30、喷头40和副活塞50；其中，主活塞30的下端用于和容器相连接，主活塞30内具有上下延伸的主吸液腔301、以及径向延伸的补气口302，主吸液腔301的下端与容器的内腔相通，补气口302的内端与主吸液腔301相通；喷头40的下段部分可上下移动地安装在主活塞30的外周；副活塞50的上端固定在喷头40的上段部分内，副活塞50随喷头40一起上下移动，故副活塞50的下端可上下移动地安装在主活塞30的上端，副活塞50具有副吸液腔501、第一排气构件502、以及第二排气构件503，副吸液腔501上下延伸、且副吸液腔501的下端与主吸液腔301的上端相通；副活塞50和主活塞30之间形成有第一压缩空间10和第二压缩空间20，第二压缩空间20的下端与补气口302的外端连通、且补气口302中固设有覆盖补气口302的过滤元件601。未向下按压喷头40时，如图1所示，主活塞30和副活塞50之间密封，使得第一压缩空间10与主吸液腔301之间不连通、以及第二压缩空间20与无菌喷雾泵的外部之间也不连通。向下按压喷头40至最下端，如图2所示，喷头40带动副活塞50一起相对于主活塞30下移，使得主活塞30同时与副活塞50上的第一排气构件502和第二排气构件503相抵接，此时，第一压缩空间10通过第一排气构件502和主吸液腔301相通，第二压缩空间20通过第二排气构件503与无菌喷雾泵的外部相通。因此，第一次向下按压喷头40至最下端，第一压缩空间10中的压缩空气依次经第一排气构件502和主吸液腔301后被排至容器内，同时， 容器的内腔依次经主吸液腔301、补气口302、第二排气构件503和无菌喷雾泵的外部相通，容器内的压缩空气依次经主吸液腔301、补气口302和第二排气构件503后被排出至外部，使容器内的压力与外部压力平衡；松开喷头40，喷头40带动副活塞50向上回弹，如图3所示，第一压缩空间10、第二压缩空间20、以及主吸液腔301内形成负压，将容器内的液体吸出；第二次向下按压喷头40至最下端、以及后续的每一次向下按压喷头40至最下端，第一排气构件502和第二排气构件503都会使得容器内的压力与外部压力平衡，外部空气依次经第二排气构件503、第二压缩空间20、补气口302和主吸液腔301后补入容器内；之后松开喷头40，容器内的液体被吸出，以此不断循环，直至液体由喷头40上端的喷射口402喷出。因此，本申请通过第一压缩空间10、第二压缩空间20、第一排气构件502、第二排气构件503以及补气口302实现无菌喷雾泵的正常工作，使得无菌喷雾泵能够吸取容器内的液体、并将液体喷出，由于其能够将外部空气正常补充至容器内，而不是采用真空泵形式，故本申请中的无菌喷雾泵不受装量和使用次数的影响，使容器容量、容器内药液装量、以及喷雾泵喷射剂量不受限制；并且通过过滤元件601满足无菌喷雾泵正常工作的空气交换，又避免了污染，达到无菌的要求。
进一步地，主活塞30与容器之间、以及主活塞30与补气口302之间的优选连接结构为：如图1和图4所示，主活塞30内固定有设在主吸液腔301中的过滤连接器60，补气口302开设在过滤连接器60中，过滤元件601为固定于过滤连接器60的过滤膜，过滤膜通气不通水，隔绝向容器内补充外部空气时外部污染物进入容器内部。另外，过滤连接器60具有连接器内腔602，连接器内腔602为主吸液腔301的一部分，过滤连接器60的下端紧配合地固定连接有吸液管110，吸液管110上端与连接器内腔602相通、下端伸入容器内的液体中，副活塞50中有一部分可上下移动地穿设在过滤连接器60的连接器内腔602中。另外，过滤膜固定在一压套603中，该压套603固定在补气口302中，从而将过滤膜固设在补气口302中。
进一步地，主活塞30与副活塞50之间的优选连接结构为：如图1、图4和图5所示，主活塞30具有上下延伸的主内环部303、以及位于主内环部303外周侧且上下延伸的主外环部304，主内环部303通过水平延伸的第一连接部308与主外环部304相连；副活塞50具有上下延伸的副内环部504、以及位于副内环部504外周侧且上下延伸的副外环部505，副内环部504通过水平延伸的第二连接部506与副外环部505相连；主内环部303的上端伸入副外环部505和副内环部504之间、且三者之间形成第一压缩空间10，副外环部505的下端伸入主内环部303和主外环部304之间、且三者之间形成第二压缩空间20，故第一压缩空间10和第二压缩空间20都为环形腔室。另外，主活塞30在主内环部303、主外环部304和第一 连接部308三者的连接处形成有第一台阶部309，该第一台阶部309和过滤连接器60外周的第二台阶部604相抵接，对过滤连接器60向上装入主活塞30中时形成限位。
进一步地，如图1、图4和图5所示，主活塞30在主内环部303的上端设有与副内环部504的外周面密封连接的第一密封圈305、以及在主外环部304的上端设有与副外环部505的外周面密封连接的第二密封圈306，第一排气构件502包括两道固设在副内环部504的外周面上且沿副内环部504周向排布的第一凸筋、以及形成在相邻两道第一凸筋之间的第一排气通道，第二排气构件503包括两道固设在副外环部505的外周面上且沿副外环部505周向排布的第二凸筋、以及形成在相邻两道第二凸筋之间的第二排气通道。未向下按压喷头40时，如图1所示，第一密封圈305远离于第一凸筋，使主活塞30的主内环部303与副活塞50的副内环部504之间密封，进而封堵第一压缩空间10与过滤连接器60的连接器内腔602，也即封堵第一压缩空间10与主吸液腔301，进而使得第一压缩空间10与容器内部不连通；同时，第二密封腔远离于第二凸筋，使主活塞30的主外环部304与副活塞50的副外环部505之间密封，进而封堵第二压缩空间20与外界。向下按压喷头40至最下端时，如图2所示，喷头40带动副活塞50下移，第一密封圈305被第一凸筋顶开，使得第一压缩空间10通过第一排气通道与连接器内腔602连通，也即使得第一压缩空间10通过第一排气通道与主吸液腔301连通，进而连通第一压缩空间10和容器内部；同时，第二密封腔被第二凸筋顶开，使得第二压缩空间20通过第二排气通道与无菌喷雾泵的外部连通，进而使得容器内部与外界连通、容器内外压力平衡。
进一步地，主活塞30、副活塞50与喷头40之间的优选连接结构为：如图1、图4和图5所示，副活塞50在副外环部505的外周侧设有折弯延伸的第三连接部507，第三连接部507和副外环部505之间形成有一圈第一卡槽508；喷头40的内壁上设有向下延伸的第四连接部403，喷头40的第四连接部403卡接在副活塞50的第一卡槽508中，进而将副活塞50固定于喷头40。另外，主活塞30还具有从主外环部304的下端水平向外延伸的第五连接部310、从第五连接部310的外端向上延伸的一圈活塞主体部311、从活塞主体部311的上端水平向外延伸的第六连接部312、从第六连接部312的外端向下延伸的一圈活塞连接部313、形成在主外环部304与活塞主体部311之间的第一腔室314、以及固设在第一腔室314底部的第三台阶部315，第一腔室314中设有套设在主外环部304和副外环部505外周的第一复位弹簧120，第一复位弹簧120的上下两端分别与副活塞50的第三连接部507和主活塞30的第三台阶部315相抵接；向下按压喷头40时，第一复位弹簧120被压缩；则松开喷头40后，在第一复位弹簧120的作用下使得副活塞50和喷头40一起向上回弹。如图1、图4和图6所示， 喷头40的下段部分具有喷头内环部404、位于喷头内环部404外周侧的喷头外环部405、以及形成在喷头内环部404和喷头外环部405之间的第二腔室406，喷头内环部404位于活塞主体部311的内周侧，喷头外环部405位于活塞连接部313的外周侧，故主活塞30中的活塞主体部311、第六连接部312和活塞连接部313位于喷头40的第二腔室406内。特别地，喷头内环部404与主外环部304之间的区域、喷头内环部404与活塞主体部311之间的间隙、喷头40中位于第六连接部312上方的一部分第二腔室406、以及喷头外环部405与活塞连接部313之间的间隙形成一道空气通道130，故主活塞30和喷头40之间形成有空气通道130；主活塞30在活塞连接部313上端的外周设有一圈径向外突的上卡接部307，喷头40在喷头外环部405的内周面是上设有一圈径向内突的下卡接部401，下卡接部401位于上卡接部307的下方侧；未向下按压喷头40时，上卡接部307与下卡接部401相抵接、且下卡接部401与活塞连接部313之间密封，进而使喷头40与主活塞30之间密封，从而封堵外界和空气通道130的一端，而空气通道130的另一端与第二压缩空间20之间也由第二排气构件503封堵；向下按压喷头40至最下端时，上卡接部307与下卡接部401相分离，并解除下卡接部401与活塞连接部313之间的密封，使得空气通道130的一端与外界相通，而空气通道130的另一端也通过第二排气构件503与第二压缩空间20相通，进而使得容器内外压力平衡。
如图1至图3所示，无菌喷雾泵还包括固定在喷头40内的喷雾嘴70、可上下移动地安装在喷雾嘴70和副活塞50之间的密封阀80、以及设在副吸液腔501上端的单向阀组件90，喷头40的上端具有喷射口402，副活塞50、喷头40、密封阀80和喷雾嘴70之间形成有喷射通道140，单向阀组件90用于连通或封堵喷射通道140的下端与副吸液腔501。经多次向下按压喷头40后，吸液管110吸取容器内的液体后，液体逐渐填充满连接器内腔602和副吸液腔501；当副吸液腔501中未填充满液体时，单向阀组件90处于关闭状态、以封堵喷射通道140和副吸液腔501；当副吸液腔501中填充满液体时，液体的压力迫使单向阀组件90打开、以连通喷射通道140和副吸液腔501，则液体逐渐填充满喷射通道140；当喷射通道140中未填充满液体时，则喷雾嘴70、喷头40和密封阀80之间密封，以此来封堵喷射通道140的上端和喷射口402；当喷射通道140中填充满液体时，液体的压力迫使密封阀80向下移动、以使喷射通道140的上端与喷射口402相通，则液体经喷雾嘴70后产生雾化效果，并由喷头40上的喷射口402喷出；液体喷出后内部压力消失，喷雾嘴70、喷头40和密封阀80之间再次密封，以此循环，从而可防止残留的药液与空气接触，避免污染。
进一步地，如图5所示，单向阀组件90包括开设在副活塞50的副内环部504上的阀口901、设在阀口901内侧且设在副活塞50的副内环部504上的阀座密封面902、以及可上下 移动地安装在副活塞50中的阀芯903；阀座密封面902为内端向内下方倾斜延伸的锥面，阀芯903为一不锈钢珠；阀口901与喷射通道140的下端相通；当副吸液腔501中未填充满液体时，阀芯903与阀座密封面902密封连接，故阀芯903封堵阀口901和副吸液腔501，以封堵喷射通道140和副吸液腔501；当副吸液腔501中填充满液体时，液体压力迫使阀芯903上移，使得阀口901和副吸液腔501相通，从而使得喷射通道140和副吸液腔501相通。
进一步地，如图1、图5和图7所示，密封阀80具有一段伸入副活塞50中的阀下段部801、一段伸入喷雾嘴70中的阀上段部802、从阀下段部801和阀上段部802连接处水平向外延伸的阀连接部804、从阀连接部804的外端向下延伸并位于阀下段部801外周的阀外环部805，副活塞50中副内环部504的上端伸入阀外环部805和阀下段部801之间，同时，副活塞50在副内环部504的内周设有第四台阶部509，阀下段部801的外周套设有位于副内环部504内周侧的第二复位弹簧150，第二复位弹簧150的上下两端分别与密封阀80中的阀连接部804和副活塞50中的第四台阶部509相抵接；当喷射通道140中未填充满液体时，在第二复位弹簧150的作用下使得密封阀80向上顶住喷雾嘴70和喷头40，进而使得喷雾嘴70、喷头40和密封阀80之间密封；当喷射通道140中填充满液体时，液体的压力克服第二复位弹簧150的作用力，进而可迫使密封阀80下移；液体喷出后内部压力消失时，第二复位弹簧150又使得密封阀80上移顶住喷雾嘴70和喷头40。另外，为了便于液体向下推移密封阀80，密封阀80的阀上段部802的外周面上设有一段位于密封阀80和喷雾嘴70密封连接处下方的推动面803，推动面803为外端向外下方倾斜延伸的锥面。
进一步地，喷头40和喷雾嘴70之间的优选连接结构为：如图1、图6和图8所示，喷头40上端的内壁上设有向下延伸的第七连接部407；喷雾嘴70的外周设有折弯延伸的第八连接部701，第八连接部701与喷雾嘴70之间形成有一圈第二卡槽702；喷头40的第七连接部407卡接在喷雾嘴70的第二卡槽702中，进而将喷雾嘴70固定于喷头40。另外，当喷射通道140中未填充满液体时，喷雾嘴70、喷头40和密封阀80之间密封结构优选为：密封阀80在阀上段部802的外周设有第一密封面806，喷雾嘴70的内周设有第二密封面703，第一密封面806和第二密封面703相配合，使密封阀80的阀上段部802与喷雾嘴70之间形成周面密封；喷雾嘴70的外周设有第三密封面704，喷头40的内周设有第四密封面408，第三密封面704和第四密封面408相配合，使喷雾嘴70与喷头40之间形成周面密封；密封阀80的阀上段部802的上端面具有第五密封面807，喷头40顶部的下端面具有第六密封面409，第五密封面807和第六密封面409相配合，使喷头40与密封阀80之间形成端面密封。当喷射通道140中填充满液体使密封阀80下移后，解除密封阀80和喷雾嘴70之间的周面密封、以 及密封阀80与喷头40之间的端面密封，副内环部504和副外环部505上段的一段区域、阀外环部805和喷头40之间的间隙、阀外环部805与喷雾嘴70之间的间隙依次连通形成喷射通道140，且喷射通道140的上端延伸至喷射口402处。
综上所述，上述无菌喷雾泵的工作原理如下：
1、初始状态下，如图1所示，喷头40未往下按，第一压缩空间10和第二压缩空间20内都有空气，容器内的液体未被吸入连接器内腔602(即主吸液腔301)中，主活塞30和副活塞50之间密封，主活塞30和喷头40之间密封，副活塞50中的单向阀组件90关闭，密封阀80和喷雾嘴70之间周面密封，密封阀80和喷头40之间端面密封，第一压缩空间10与连接器内腔602之间由第一密封圈305封堵，第二压缩空间20和空气通道130之间由第二密封圈306封堵，空气通道130和外界之间由主活塞30和喷头40之间的密封结构封堵，故无菌喷雾泵在不工作时为全密封状态，达到无菌的目的。
2、第一次向下按压喷头40至最下端，如图2所示，喷头40带动喷雾嘴70和副活塞50一起下移，第一压缩空间10和第二压缩空间20被压缩，第一复位弹簧120被压缩，喷头40和主活塞30之间的密封被解除；第一密封圈305被第一凸筋顶开，则第一压缩空间10内的压缩空气经第一排气通道和连接器内腔602被排入容器内；同时，第二密封腔被第二凸筋顶开，容器内外压力平衡，故容器内的压缩空气依次经连接器内腔602、补气口302、第二压缩空间20、第二排气通道和空气通道130后被排出至无菌喷雾泵的外部。
3、松开喷头40，在第一复位弹簧120的作用下使得副活塞50上移，进而带动喷头40和喷雾嘴70一起上移回弹，如图3所示，第一压缩空间10、第二压缩空间20、以及连接器内腔602中形成负压，通过吸液管110将容器内的液体吸出。
4、第二次向下按压喷头40至最下端、以及后续的每一次向下按压喷头40至最下端，由于容器内的液体被吸出，故容器内形成负压；而通过第一排气构件502和第二排气构件503都会使得容器内的压力与外部压力平衡，故外部空气依次经空气通道130、第二排气通道、第二压缩空间20、补气口302和连接器内腔602后补充到容器内。
5、再次松开喷头40，副活塞50、喷头40和喷雾嘴70一起上移回弹，再次将容器内的液体吸出；重复循环按压喷头40至最下端和松开喷头40的动作，液体填充满连接器内腔602和副吸液腔501后顶开单向阀组件90的阀芯903，单向阀组件90打开；之后，液体填充满喷射通道140后使密封阀80下移，液体经喷雾嘴70后产生雾化效果、并由喷头40上的喷射口402喷出；液体喷出后内部压力消失，喷雾嘴70、喷头40和密封阀80之间再次密封，以此循环。
综上所述，本申请通过第一压缩空间10、第二压缩空间20、第一排气构件502、第二排气构件503以及补气口302实现无菌喷雾泵的正常工作，使得无菌喷雾泵能够吸取容器内的液体、并将液体喷出，由于其能够将外部空气正常补充至容器内，而不是采用真空泵形式，故本申请中的无菌喷雾泵不受装量和使用次数的影响，使容器容量、容器内药液装量、以及喷雾泵喷射剂量不受限制，提高了容器装量的利用率；并且通过过滤元件601满足无菌喷雾泵正常工作的空气交换，又避免了污染，达到无菌的要求。
所以，本发明有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (12)

  1. 一种无菌喷雾泵，其特征在于：包括用于和容器相连接的主活塞(30)、可上下移动地安装于主活塞(30)的喷头(40)、以及固定在喷头(40)内的副活塞(50)，所述副活塞(50)可上下移动地安装于主活塞(30)、且副活塞(50)和主活塞(30)之间形成有第一压缩空间(10)和第二压缩空间(20)，所述主活塞(30)内具有与容器的内腔相通的主吸液腔(301)、以及与主吸液腔(301)相通的补气口(302)，所述补气口(302)与第二压缩空间(20)连通、且补气口(302)中固设有覆盖补气口(302)的过滤元件(601)，所述副活塞(50)具有与主吸液腔(301)相通的副吸液腔(501)、第一排气构件(502)、以及第二排气构件(503)；未向下按压喷头(40)时，所述主活塞(30)和副活塞(50)之间密封；向下按压喷头(40)且主活塞(30)与第一排气构件(502)和第二排气构件(503)抵接后，所述第一压缩空间(10)通过第一排气构件(502)和主吸液腔(301)相通，所述第二压缩空间(20)通过第二排气构件(503)与无菌喷雾泵的外部相通。
  2. 根据权利要求1所述的无菌喷雾泵，其特征在于：所述主活塞(30)内固定有设在主吸液腔(301)中的过滤连接器(60)，所述补气口(302)开设在过滤连接器(60)中，所述过滤元件(601)为固定于过滤连接器(60)的过滤膜。
  3. 根据权利要求1所述的无菌喷雾泵，其特征在于：所述主活塞(30)具有主内环部(303)、以及位于主内环部(303)外周侧的主外环部(304)，所述副活塞(50)具有副内环部(504)、以及位于副内环部(504)外周侧的副外环部(505)，所述主内环部(303)的上端伸入副外环部(505)和副内环部(504)之间、且三者之间形成所述第一压缩空间(10)，所述副外环部(505)的下端伸入主内环部(303)和主外环部(304)之间、且三者之间形成所述第二压缩空间(20)。
  4. 根据权利要求3所述的无菌喷雾泵，其特征在于：所述主活塞(30)在主内环部(303)的上端设有与副内环部(504)的外周面密封连接的第一密封圈(305)、以及在主外环部(304)的上端设有与副外环部(505)的外周面密封连接的第二密封圈(306)，所述第一排气构件(502)包括至少两道固设在副内环部(504)的外周面上且沿副内环部(504)周向排布的第一凸筋、以及形成在相邻两道第一凸筋之间的第一排气通道，所述第二排气构件(503)包括至少两道固设在副外环部(505)的外周面上且沿副外环部(505)周向排布的第二凸筋、以及形成在相邻两道第二凸筋之间的第二排气通道；当向下按压喷头(40)后，所述第一凸筋顶开第一密封圈(305)、使第一压缩空间(10)通过第一排气通 道与主吸液腔(301)连通，所述第二凸筋顶开第二密封圈(306)、使第二压缩空间(20)通过第二排气通道与无菌喷雾泵的外部连通。
  5. 根据权利要求3所述的无菌喷雾泵，其特征在于：还包括套设在主外环部(304)和副外环部(505)外周的第一复位弹簧(120)，所述第一复位弹簧(120)的上下两端分别与副活塞(50)和主活塞(30)相抵接。
  6. 根据权利要求1所述的无菌喷雾泵，其特征在于：所述主活塞(30)和喷头(40)之间形成有空气通道(130)，所述主活塞(30)的外周设有一圈径向外突的上卡接部(307)，所述喷头(40)的内周设有一圈径向内突的下卡接部(401)；未向下按压喷头(40)时，所述上卡接部(307)与下卡接部(401)相抵接、且下卡接部(401)与主活塞(30)之间密封；向下按压喷头(40)后，所述上卡接部(307)与下卡接部(401)相分离、并解除下卡接部(401)与主活塞(30)之间的密封，所述空气通道(130)的一端与无菌喷雾泵的外部连通、另一端通过第二排气构件(503)与第二压缩空间(20)连通。
  7. 根据权利要求1所述的无菌喷雾泵，其特征在于：还包括固定在喷头(40)内的喷雾嘴(70)、可上下移动地安装在喷雾嘴(70)和副活塞(50)之间的密封阀(80)、以及设在副吸液腔(501)上端的单向阀组件(90)，所述喷头(40)具有喷射口(402)，所述副活塞(50)、喷头(40)、密封阀(80)和喷雾嘴(70)之间形成有喷射通道(140)，所述单向阀组件(90)用于连通或封堵喷射通道(140)与副吸液腔(501)；当喷射通道(140)中未填充满液体时，所述喷雾嘴(70)、喷头(40)和密封阀(80)之间密封、以封堵喷射通道(140)和喷射口(402)；当喷射通道(140)中填充满液体时，所述密封阀(80)向下移动、使喷射通道(140)与喷射口(402)相通。
  8. 根据权利要求7所述的无菌喷雾泵，其特征在于：所述密封阀(80)上具有一段伸入副活塞(50)中的阀下段部(801)，所述阀下段部(801)的外周套设有第二复位弹簧(150)，所述第二复位弹簧(150)的上下两端分别与密封阀(80)和副活塞(50)相抵接。
  9. 根据权利要求7所述的无菌喷雾泵，其特征在于：所述密封阀(80)上具有一段伸入喷雾嘴(70)中的阀上段部(802)，当喷射通道(140)中未填充满液体时，所述阀上段部(802)与喷雾嘴(70)之间周面密封，所述喷雾嘴(70)与喷头(40)之间周面密封，所述喷头 (40)与密封阀(80)之间端面密封。
  10. 根据权利要求7所述的无菌喷雾泵，其特征在于：所述密封阀(80)上设有一段位于密封阀(80)和喷雾嘴(70)密封连接处下方的推动面(803)，所述推动面(803)为外端向外下方倾斜延伸的锥面。
  11. 根据权利要求7所述的无菌喷雾泵，其特征在于：所述单向阀组件(90)包括开设在副活塞(50)上的阀口(901)、设在阀口(901)内侧且设在副活塞(50)上的阀座密封面(902)、以及可上下移动地安装在副活塞(50)中的阀芯(903)，所述阀口(901)与喷射通道(140)相通；当副吸液腔(501)中未填充满液体时，所述阀芯(903)与阀座密封面(902)密封连接，所述阀芯(903)封堵阀口(901)和副吸液腔(501)；当副吸液腔(501)中填充满液体时，所述阀芯(903)上移，所述阀口(901)和副吸液腔(501)相通。
  12. 根据权利要求11所述的无菌喷雾泵，其特征在于：所述阀座密封面(902)为内端向内下方倾斜延伸的锥面，所述阀芯(903)为一不锈钢珠。
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