WO2012034293A1

WO2012034293A1 - Method for producing terylene fiber using polyester waste

Info

Publication number: WO2012034293A1
Application number: PCT/CN2010/077437
Authority: WO
Inventors: 陈秋火
Original assignee: 上海上荣包装技术有限公司
Priority date: 2010-09-14
Filing date: 2010-09-29
Publication date: 2012-03-22
Also published as: GB2496712A; JP2013538103A; CN102712397A; CN102712397B; US20130221553A1; GB201213685D0

Abstract

A method for producing terylene fiber using polyester waste is disclosed. Firstly, dried polyester waste is sent into a screw extruder, then is melt and extruded to be polyester melt. Whereafter, the melt is filtrated twice to remove impurities. Then macromolecule polymerization reaction is taken place in the polyester melt to homogenize the molecular weight of macromoleclar polymer and to increase the viscosity of the polyester. Then the melt with increased viscosity is finely filtrated using melt precision filter. Whereafter, the melt is sent into a spinning box to execute metering spinning, then is cooled and solidified to be filaments. Finally, the filaments are wound according to various process requirements. The method can increase the quality of regenerated polyester spinning melt. The regenerated polyester melt has less impurities and homogenous viscosity after multiple filtrating. The fiber product has advantages of less end breakage rate, high full-bobbin rate, high finished product rate and less wastage.

Description

Foam nozzle

Technical field

The utility model relates to a container suitable for placing a liquid such as an emulsion, in particular, a foam nozzle of such a container, which can maintain a good sealing property during pressing and releasing, and the sprayed foam has a good hand feeling. Background technique

The emulsion type foam nozzle is similar to the general nozzle, and is composed of a gland, a screw cap and a cylinder. The screw cap is screwed or snapped on the container bottle mouth, and the gland can be moved up and down with respect to the screw cap, and the cylinder is inserted into the container bottle. In the mouth.

There is a one-way liquid discharge mechanism in the cylinder, which mainly includes a connecting rod, a needle valve, a piston, a spring and a check valve. The connecting rod has a hollow passage and is used for pressing the piston, and the check valve is arranged at the bottom of the cylinder. The fluid in the control container can only enter the cylinder from the container in a unidirectional upward direction under the action of air pressure, and does not return to the container in the reverse direction.

After the fluid fills the cylinder, the gland is pressed down, and the flow path inside the connecting rod communicates with the cylinder, and the fluid flows upward through the flow path of the connecting rod and the flow path of the gland under pressure. When the gland is released, the connecting rod moves upward under the action of the spring, and the volume in the cylinder expands, and the fluid in the container is pumped into the cylinder again, and can be used repeatedly.

All of the above are common technologies in the industry.

For the foam nozzle, it differs from the general nozzle in that a mixing chamber for mixing air and emulsion is also required, in which the foam is sufficiently mixed by gas and liquid to form a foam. At the same time, a mechanical foam nozzle disclosed in Chinese Patent Publication No. CN2632010Y is provided with at least one layer of mesh screen at the liquid outlet of the one-way liquid discharge mechanism.

This mesh structure has long been applied to the design of the foam nozzle, and the mesh is made easier to foam by the mesh screen, thereby improving the hand feeling of the foam.

The improvement of the nozzle is mainly for two problems: First, the metal spring is easy to react with the fluid; secondly, the airtightness in the cylinder is ensured when the gland is pressed down, and the air is smoothly entered into the cylinder when the gland is released. Pressure, the two are difficult to achieve.

For the first problem, such as the Chinese utility model patent number ZL200520001168. 0 discloses a ring The nozzle structure is composed of a pressing body, a spring body, a fixing sleeve, a piston, a connecting rod, an opening and closing valve, and a cylinder. The output tube provided by the pressing body is inserted through the spring body, the fixing sleeve and the piston, and is engaged with the connecting rod. The spring body device is disposed in a circular concave surface disposed above the fixing sleeve, and the switching valve is inserted into the connecting rod from below, and the output tube, the piston and the connecting rod of the pressing body are combined in the cylinder, so that the cylinder is below the fixing sleeve. And engaging a straw, the device is installed in a container, and the fixing sleeve is installed on the bottle mouth of the container; due to the structural combination of the above components, the metal fitting without the spring body in the cylinder does not overlap with the emulsion in the container or Liquids such as perfumes are in contact with each other, which causes the liquids such as lotions or perfumes to change in quality to enhance environmental benefits, and achieve the effect of liquid ejection in the most streamlined combination.

For the second problem, the prior art is to provide a vent hole on the side of the cylinder, and a vent hole is provided to facilitate gas entering the container to counteract the negative pressure generated by the pumping of the fluid. Under normal circumstances, the piston seals the vent hole, so that the gas in the container is isolated from the atmosphere outside the container to seal. In use, the gland is pressed to move the piston downward and move away from the vent hole. The air passage is opened and the air outside the container is drawn into the interior of the container to counteract the negative pressure generated during the last pumping.

Summary of the invention

The technical problem to be solved by the utility model is to provide a foam nozzle having a novel mechanical structure. During the pressing and releasing process, the set position can be sealed according to the needs of each process, and the setting is maintained and kept open. This ensures that the fluid does not leak and the gas flows smoothly.

The technical solution adopted by the utility model to solve the above technical problem is: a foam nozzle, which is installed on the bottle mouth of the fluid container, and the nozzle is composed of a gland, a screw cap and a cylinder from top to bottom, and the gland can be relatively screwed Moving up and down, wherein a hollow cylinder is arranged in the middle of the gland, and a flow channel is formed on the inner side of the cylinder; the screw cap is rotated or buckled and fixed on the bottle mouth of the fluid container; the cylinder is arranged inside the bottle mouth of the fluid container, and the upper edge is stuck above the bottle mouth; The inner cavity of the cylinder is divided into an upper chamber and a lower chamber, and a screen, an air valve, a connecting rod, a large piston, a spring, a small piston, a needle valve and a check valve are sequentially arranged in the outer casing, wherein:

The screen is provided with at least two pieces, which are horizontally disposed in the flow passage of the gland, and includes a first screen formed on the net plug and a second screen formed on the air valve, and the net plug is stuck on the gland Positioning inside the hollow cylinder, The net plug has a round tubular shape, a first screen is arranged at the bottom, and a gauze is arranged at the top;

An air valve is positioned inside the hollow cylinder of the gland. The air valve is composed of a hollow cylinder and a skirt of the outer ring. The top of the cylinder is provided with a second screen, and the bottom is an opening. The bottom end of the hollow cylinder of the gland can be The skirt of the lower abutting air valve forms a lower sealing ring at the edge of the skirt, and the upper part of the connecting rod extends into the air valve; a connecting rod has a hollow passage, the inner cavity of the air valve and the hollow passage of the connecting rod The hollow passage is communicated with the flow passage of the gland by connecting the sleeve, and the connecting sleeve is composed of a hollow cylinder and a convex ring at the periphery of the bottom of the cylinder, and the outer periphery of the cylinder is provided with a plurality of radial ribs between adjacent ribs Forming a gas passage, the outer periphery of the convex ring forming a ring upper sealing slope;

A large piston is arranged in the upper chamber of the cylinder, and is composed of an inner tube, an outer tube and a connecting ring connecting the middle of the inner and outer tubes. The inner tube is sleeved on the outer side of the middle portion of the connecting rod, and the large piston connecting ring Forming a ring of upper sealing ring, a plurality of air holes are arranged on the connecting ring between the upper sealing ring and the inner tube, and the lower sealing ring on the air valve and the upper sealing ring of the large piston are sealed with each other (generally The lower sealing ring of the air valve is fastened on the outer side of the upper sealing ring of the large piston, and a lower sealing inclined surface is formed on the inner side of the bottom of the inner circular tube, and the upper sealing inclined surface of the connecting sleeve and the lower sealing inclined surface of the large piston abut against each other;

A small piston is arranged in the lower chamber of the cylinder, and is composed of a hollow inner and outer cylinder and a connecting ring connecting the inner and outer cylinders in the middle, and a lower sealing slope is arranged inside the bottom of the inner cylinder, the bottom of the connecting rod The end can be pressed down to the connecting ring of the small piston;

a spring, the upper end abuts the top connecting sleeve, and the lower end abuts the lower chamber of the top cylinder;

A needle valve is composed of a cylinder and a bottom disc. A circular sealing slope is formed at the joint of the disc and the cylinder. The needle valve passes from the bottom to the inner cylinder of the small piston and extends into the hollow of the connecting rod. In the channel, positioning in the hollow channel, and forming a fluid passage between the needle valve and the inner cylinder of the small piston, the lower sealing slope of the small piston can be sealed against the upper sealing slope of the needle valve;

A one-way valve is provided at the liquid inlet at the bottom of the lower chamber.

The structure of the utility model comprises three sealing systems:

1. The seal between the lower seal ring of the air valve and the upper seal ring of the large piston; 2. The seal between the upper sealing bevel of the connecting sleeve and the lower sealing bevel of the large piston;

3. The seal between the upper sealing bevel of the needle valve and the lower sealing bevel of the small piston.

However, the above three sealing systems are not at the same time sealed.

The working principle is:

Under normal conditions, the lower chamber of the cylinder is already filled with fluid, while the upper chamber of the cylinder is air. At this time, the lower sealing ring of the air valve and the upper sealing ring of the large piston are not sleeve-sealed, and the air hole connects the upper and lower portions of the upper chamber divided by the large piston. However, since the upper sealing slope of the connecting sleeve and the lower sealing slope of the large piston are sealed against each other, the gas in the upper chamber of the cylinder cannot enter the inner cavity of the air valve, and the upper sealing slope of the needle valve and the lower sealing of the small piston The inclined surfaces are sealed against each other, so that the fluid in the lower chamber of the cylinder cannot enter the hollow passage of the connecting rod.

Squeeze the cover slightly, and the lower edge of the cylinder of the gland presses against the skirt of the air valve to press the air valve, but the position of the large piston and the small piston remains unchanged. The lower sealing ring of the air valve and the upper sealing ring of the large piston are sealed with each other to isolate the two parts of the upper and lower parts of the large piston. Since the air valve also moves down against the top connecting sleeve, the upper sealing slope of the connecting sleeve is separated from the lower sealing inclined surface of the large piston, and the air below the large piston in the upper chamber of the cylinder can enter the air valve; meanwhile, the air valve The second screen also pushes the connecting rod and the needle valve downward together, so that the upper sealing slope of the needle valve is separated from the lower sealing slope of the small piston, and the fluid in the lower chamber of the cylinder can enter the hollow passage of the connecting rod.

Continue to press the gland, the lower sealing ring of the air valve abuts the connecting ring of the large piston to press down the large piston, and the lower edge of the connecting rod also abuts the connecting ring of the small piston to press the small piston. The space under the large piston in the upper chamber of the cylinder is gradually compressed, and the gas continuously enters the air valve cavity through the gas passage between the air valve and the connecting sleeve; and the space inside the cylinder lower chamber is also gradually compressed, the fluid is from the needle The fluid passage between the valve and the inner cylinder of the small piston continuously enters the hollow passage of the connecting rod. The gas and fluid are mixed in the mixing chamber and then formed through the second screen on the air valve and the first screen on the mesh to form a rich foam which is ejected from the flow passage and outlet of the gland.

After the required amount is ejected, the gland is released, and the connecting sleeve and the air valve are moved upward by the spring restoring force. In the upper chamber of the cylinder, the upper sealing bevel of the connecting sleeve and the lower sealing bevel of the large piston rejoin each other. The top seal, and the lower seal ring of the air valve is separated from the seal ring on the large piston, so that the air hole is opened, and the air gradually enters the space under the large piston from above the large piston through the air hole, and the large piston is reset. In the lower chamber of the cylinder, the connecting rod and the needle valve rise, and the upper sealing inclined surface of the needle valve and the lower sealing inclined surface of the small piston are mutually sealed against each other, and the disc at the bottom of the needle valve will also drive the small piston to rise and reset.

On the basis of the above solution, the first screen has the same structure as the second screen, and the screen is divided into upper and lower layers, a transverse channel is formed between the upper layer and the lower layer, and a diamond mesh is arranged on the upper layer and the lower layer. And the upper diamond mesh and the lower diamond mesh are staggered, and the channel is formed by the upper diamond mesh, the lateral channel and the lower diamond mesh. By adopting the special design of the utility model having the diamond mesh and the upper and lower staggered openings, the mesh does not make the screen pass straight through, but forms a curved channel, which is designed to produce uniform and fine foam.

On the basis of the above solution, in order to prevent the rotation of the net plug and the air valve in the gland cylinder, the cylindrical inner wall of the gland is symmetrically provided with a pair of circular arc ribs, and the outer wall sections of the net plug cylinder and the air valve cylinder are respectively A rounded surface that matches the arcuate rib is formed, and the mesh plug and the air valve are radially positioned inside the gland cylinder.

On the basis of the above scheme, since the air valve pushes the connecting sleeve downward when pressing down with the gland, the lower edge of the cylindrical portion of the air valve needs to be abutted on the convex ring of the connecting sleeve, and at the same time, the lowering of the large piston is ensured. When the sealing bevel is separated from the upper sealing bevel of the connecting sleeve, air can enter the gas flow path between the air valve and the connecting sleeve from the side. Therefore, the bottom edge of the air valve cylinder is provided with a plurality of convex teeth adjacent to each other. An air inlet is formed between the convex teeth, and air enters the air valve through the air inlet; in order to allow more air to enter the air valve to mix with the fluid, the upper part of the inner surface of the air valve cylinder is provided with a plurality of ribs, An air passage is formed between adjacent ribs.

In addition to the above aspect, the upper portion of the connecting rod is formed with an enlarged diameter portion, and a plurality of convex teeth are provided on the top edge of the enlarged diameter portion, and a gas-liquid communication port is formed between the adjacent protruding teeth. When the gland is released, the sleeve is held against the expanded neck of the connecting rod to urge the connecting rod to rise. The neck expansion can be in various forms such as steps and cones. Through the gas-liquid communication port, the air and the fluid contact and mix to form a foam.

On the basis of the above scheme, in order to position the elongated needle valve on the inner side of the connecting rod, it is not blocked at the same time. a hollow passage of the plug connecting rod, a middle portion of the hollow passage of the connecting rod is provided with a waist drum shaped card hole, and an upper portion of the needle valve cylinder penetrates into the waist drum shaped card hole and is clamped by two straight sides of the waist drum shaped card hole, A flow channel is formed between the two curved sides of the cylindrical drum hole on both sides of the cylinder, and below the waist drum shaped hole, a plurality of radial ribs are arranged on the periphery of the cylinder of the needle valve, between adjacent ribs Form a flow channel.

The structure of the utility model not only locks the front end of the needle valve through the card hole, but also fixes the needle valve inward by the connecting rod after the needle valve is inserted into the hollow passage of the connecting rod, thereby positioning the needle valve. The shape of the hole should not be limited to the shape of the waist drum mentioned here, but also square, diamond, elliptical, etc., as long as it is different from the shape of the cylindrical needle valve, the shape that can catch the needle valve should be It is the scope of protection of the present invention. The ribs on the outside of the needle valve can also be replaced with a rib on the inside of the connecting rod. As long as it is a hollow passage that can position the needle valve without blocking the connecting rod, it should also be the protection scope of the utility model.

Based on the above solution, the bottom surface of the connecting sleeve is provided with an annular groove, and the upper end of the spring is positioned in the annular groove.

Based on the above solution, the bottom of the lower chamber of the cylinder is provided with a spring groove, and on the inner side of the spring groove, the lower chamber is separated from the upper chamber by a small piston, and the lower end of the spring is positioned in the spring groove.

The advantage of this design is that the small piston is used to permanently close the lower chamber of the cylinder, and the spring is moved to the outside so that the spring does not contact the fluid in the lower chamber, thus effectively preventing the spring from chemically reacting with the fluid to affect the fluid. Nature and problem of spring life.

On the basis of the above solution, in order to enable the outside air to enter the cylinder to offset the negative pressure therein, thereby facilitating repeated extrusion of the nozzle, the cylinder is provided with an exhaust hole at the upper chamber, and the large piston is on the upper piston. The chamber is located at the venting opening to isolate the cylinder bore from the outside.

Under normal conditions, the exhaust hole at the upper chamber is closed by a large piston, and the inside of the cylinder is not connected to the outside to maintain a closed state.

When the gland is pressed down, the space above the large piston in the chamber above the cylinder is gradually enlarged, and the position of the large piston leaving the vent hole, the air is filled from the outside of the nozzle into the upper chamber of the cylinder for filling, and due to the lowering of the air valve The sealing ring is sealed with the upper sealing ring of the large piston, and the incoming air does not enter the air below the large piston. In the room, the original air in the space below the large piston will gradually be squeezed into the air valve cavity to mix with the fluid as the gland is pressed down.

When the gland is released after pressing, the lower sealing ring of the air valve is separated from the upper sealing ring of the large piston, and the air in the space above the large piston passes through the air hole into the lower space, and the volume of the upper space is gradually reduced, and the volume of the lower space is reduced. Gradually increase, complete the air exchange, and finally the large piston is reset, and the vent hole is blocked to prepare for the next press.

In addition, a gasket is arranged between the upper edge of the cylinder and the mouth of the bottle to ensure airtightness between the cylinder and the mouth of the bottle.

The beneficial effects of the utility model are:

The foam nozzle of the utility model adopts three sealing mechanisms to seal different positions in different states, ensuring the sealing property inside the foam nozzle while ensuring smooth flow of air into the negative pressure, and the whole extrusion process is very light. The liquid in the bottle will not leak. In addition, the foam formed by pressing is rich and feels good.

DRAWINGS

Figure 1 is an exploded view showing the assembled structure of the foam nozzle of the present invention.

2 is a schematic cross-sectional structural view of the foam nozzle of the present invention.

FIG. 3 is a schematic cross-sectional structural view of the foam nozzle of the present invention when it is slightly pressed down.

4 is a schematic cross-sectional structural view of the foaming nozzle of the present invention pressed down to the bottom.

Figure 5 is a cross-sectional structural view of the gland of the present invention.

Figure 6 is a perspective view showing the three-dimensional structure of the gland of the present invention.

Figure 7 is a cross-sectional structural view of the mesh plug of the present invention.

Figure 8 is a bottom view of the utility model of the utility model.

Figure 9 is a schematic perspective view of the mesh plug of the present invention.

Figure 10 is a cross-sectional structural view of the screw cap of the present invention.

Figure 11 is a cross-sectional structural view of the air valve of the present invention. Figure 12 is a schematic view showing the flow direction of the second screen of the air valve of the present invention;

Figure 13 is a bottom plan view of the air valve of the present invention.

Figure 14 is a perspective view showing the three-dimensional structure of the air valve of the present invention.

Figure 15 is a cross-sectional structural view of the large piston of the present invention.

Figure 16 is a perspective view showing the three-dimensional structure of the large piston of the present invention.

Figure 17 is a cross-sectional structural view of the connecting rod of the present invention.

Figure 18 is a bottom plan view of the connecting rod of the present invention.

Figure 19 is a perspective view showing the structure of the connecting rod of the present invention.

Figure 20 is a cross-sectional structural view of the connecting sleeve of the present invention.

Figure 21 is a perspective view showing the three-dimensional structure of the connecting sleeve of the present invention.

Figure 22 is a cross-sectional structural view of the small piston of the present invention.

Figure 23 is a perspective view showing the three-dimensional structure of the small piston of the present invention.

Figure 24 is a cross-sectional structural view of the needle valve of the present invention.

Figure 25 is a perspective view showing the structure of the needle valve of the present invention.

Figure 26 is a cross-sectional structural view of the cylinder of the present invention.

Description of the numbers in the drawings

1 a gland 11 a cylinder

13, 13 '- ribs

2—net plug 21—first screen upper diamond mesh

212 lower diamond mesh 213—transverse channel

22—round tube 221, 222 round face 23—gauze

3—Capping

4 air valve

41-second mesh layer diamond mesh 412 lower diamond mesh 413-transverse channel 42—Cylindrical 421- - convex tooth 422- - air inlet

423—rib 424- - air passage 425- - round face

43—skirt 431- - lower seal ring

5 large piston 51-inner tube 511- - lower sealing bevel

52 outer tube

53 connecting ring 531- - upper sealing ring 532- - air vent

6—link 61--hollow channel 611- - bayonet

62 Expanded neck 621- - convex tooth 622- - gas-liquid communication port

7 connecting sleeve 71-hollow cylinder 711- - rib

72—convex ring 721- - upper sealing bevel 722- - annular groove

8 small piston 81-inner cylinder 811- - lower sealing bevel

82 outer cylinder 83-connecting ring

9-needle valve 91--cylindrical 911- - rib

92-disc 93-upper sealing bevel

10—spring 13- - steel ball

14 one cylinder 141- - upper chamber 1411 - - vent

142 lower chamber 1421 spring slot 1422 - a liquid inlet

15 washers.

detailed description

1 is an exploded view of the assembly structure of the foam nozzle of the present invention, and FIG. 2 is a schematic cross-sectional structural view of the foam nozzle of the present invention. The foam nozzle is mounted on the bottle mouth of the fluid container, and the nozzle is from the top. The lower cover is composed of a gland 1, a screw cap 3 and a cylinder 14, and the gland 1 can be moved up and down with respect to the screw cap 3. A mesh plug 2, an air valve 4, a connecting rod 6, a large piston 5, and a spring 10 are arranged in the outer casing. , small piston 8, needle valve 9 and check valve 13.

Please refer to FIG. 5 , which is a cross-sectional structural view of the gland of the present invention, and the middle of the gland 1 is provided. There is a hollow cylinder 11, the inside of the cylinder 11 forms a flow channel 12;

Please refer to FIG. 10, which is a cross-sectional structural view of the screw cap of the present invention. The cap 3 is rotated or snap-fastened to the bottle mouth of the fluid container;

26 is a schematic cross-sectional view of the cylinder of the present invention. The cylinder 14 is disposed inside the bottle mouth of the fluid container, and the upper edge is clamped over the bottle mouth. The inner cavity of the cylinder is divided into the upper chamber 141 and The lower chamber 142 is provided with a vent hole 1411 at the upper chamber 141, and the lower chamber 142 is provided with a spring groove 1421 and a liquid inlet P 1422.

2 is a schematic cross-sectional structural view of the foaming nozzle of the present invention, FIG. 3 is a schematic cross-sectional structural view of the foaming nozzle of the present invention when it is slightly pressed, and FIG. 4 is an assembled cross-sectional view of the foaming nozzle of the present invention. The structure diagram shows that a gasket 15 is arranged between the upper edge of the cylinder 14 and the mouth of the bottle to ensure airtightness between the cylinder 14 and the bottle mouth;

Please refer to FIG. 6 for a three-dimensional structure diagram of the gland of the present invention, FIG. 7 is a cross-sectional structural view of the net plug of the present invention, FIG. 8 is a bottom view of the utility model, and FIG. 9 is a schematic view of the utility model. As shown in the schematic view of the three-dimensional structure of the plug, the net plug 2 in Fig. 7 is a hollow circular tube 22, the bottom of which is provided with a first screen 21, the top of which is provided with a gauze 23, and the outer wall of the netted circular tube 22 is rounded. The ribs 221, 222, the inner wall of the cylinder 11 of the gland 1 is formed with ribs 13, 13' matching the circular vacancies 221, 222, and the mesh plug 2 is radially positioned inside the gland cylinder 11;

The first screen 21 is divided into two upper and lower layers, and a transverse passage 213 is formed between the upper layer and the lower layer. The upper layer and the lower layer are respectively provided with diamond-shaped mesh holes, and the upper diamond-shaped mesh holes 211 and the lower diamond-shaped mesh holes 212 are staggered. The upper and lower sides of the first screen 21 are connected via the upper diamond mesh 211, the transverse channel 213 and the lower diamond mesh 212.

Please refer to FIG. 11 for a cross-sectional structural view of the air valve of the present invention, FIG. 12 is a schematic view of the flow direction of the second screen of the air valve of the present invention, and FIG. 13 is a bottom view of the air valve of the present invention and FIG. As shown in the perspective view of the utility model air valve, the air valve 4 is composed of a hollow cylinder 42 and a peripheral skirt 43. The top of the cylinder 42 is provided with a second screen 41, the bottom is an opening, and the air valve cylinder A circular face 425 is formed on the outer wall of the cover 42, the inner cavity of the cylinder 11 of the gland 1 is matched with the outer contour of the air valve cylinder 42, and the air valve 4 is radially positioned by the circular face 425 on the inner side of the gland cylinder 11;

The upper surface of the inner surface of the air valve cylinder 42 is provided with a plurality of ribs 423, and an air passage 424 is formed between the adjacent ribs 423;

The bottom edge of the air valve cylinder 42 is provided with a plurality of convex teeth 421, and an air inlet 422 is formed between the adjacent convex teeth 421;

The bottom end of the gland cylinder 11 can be pressed downward against the skirt of the top air valve 4, and a ring of lower sealing ring 431 is formed at the edge of the skirt 43;

As shown in FIG. 12, the second screen 41 is divided into upper and lower layers, a transverse passage 413 is formed between the upper layer and the lower layer, and a diamond-shaped mesh is provided on the upper layer and the lower layer, and the upper diamond-shaped mesh 411 and the lower diamond-shaped mesh are provided. The position of the 412 is staggered, and the second screen 41 is connected to the upper and lower sides via the upper diamond mesh 411, the transverse passage 413 and the lower diamond mesh 412.

17 is a cross-sectional structural view of the connecting rod of the present invention, FIG. 18 is a bottom view of the connecting rod of the utility model, and FIG. 19 is a schematic view showing the three-dimensional structure of the connecting rod of the utility model, the connecting rod 6 has a hollow passage 61, the hollow passage 61 communicates with the flow passage 12 of the gland 1, and a hollow drum-shaped hole 611 is disposed in the middle of the hollow passage 61. The upper portion of the connecting rod 6 extends into the air valve 4, and an enlarged diameter portion 62 is formed. A plurality of convex teeth 621 are disposed on the top edge of the 62, and a gas-liquid communication port 622 is formed between the adjacent convex teeth, and the gas-liquid communication port 622 communicates the inner cavity of the air valve 4 with the hollow passage 61 of the connecting rod 6. Allowing air and fluid to be in sufficient contact and mixed to form a foam;

20 is a schematic cross-sectional structural view of the connecting sleeve of the present invention and FIG. 21 is a schematic perspective view of the connecting sleeve of the present invention. The connecting sleeve 7 is disposed between the air valve 4 and the connecting rod 6, and the connecting sleeve 7 is The hollow cylinder 71 is formed by a convex ring 72 at the periphery of the bottom of the cylinder. The outer periphery of the cylinder 71 is provided with a plurality of radial ribs 711, and a gas passage 712 is formed between the adjacent ribs 711. The outer periphery of the convex ring 72 forms a ring seal. a slope 721, an annular groove 722 is provided on the bottom surface;

Please refer to FIG. 15 , which is a cross-sectional structural view of the large piston of the present invention and FIG. 16 is a large The large piston 5 is disposed in the upper chamber 141 of the cylinder 14 and is located at the vent hole 1411 to isolate the inner cavity of the cylinder 14 from the outside, from the inner tube 51 and the outer tube 52. The connecting ring 53 is connected to the middle of the inner and outer tubes, and the inner tube 51 is sleeved on the outer side of the middle portion of the connecting rod 6. On the connecting ring 53 of the large piston 5, a ring of upper sealing ring 531 is formed, and the upper sealing ring 531 is A plurality of air holes 532 are evenly distributed on the connecting ring between the inner circular tubes 51, and the lower sealing ring 431 on the air valve 4 and the upper sealing ring 531 of the large piston 5 are sealed with each other (the lower sealing ring 431 of the air valve 4). The sleeve is buckled on the outer side of the upper seal ring 531 of the large piston 5, and a lower seal slope 511 is formed on the inner side of the bottom of the inner tube 51, and the upper seal slope 721 of the joint sleeve 7 and the lower seal slope 511 of the large piston 5 abut each other. Top seal

Please refer to FIG. 22, which is a cross-sectional structural view of the small piston of the present invention, and FIG. 23 is a schematic perspective view of the small piston of the present invention. The small piston 8 is disposed in the lower chamber 142 of the cylinder 14, and is hollow. The inner cylinder 81, the outer cylinder 82 and the connecting ring 83 connecting the inner cylinder 81 and the outer cylinder 82 in the middle, the lower edge of the connecting rod 6 can be pressed downward against the connecting ring 83 of the small piston 8, the inner part of the small piston 8. A lower sealing slope 811 is provided on the inner side of the bottom of the cylinder 81.

24 is a schematic cross-sectional structural view of the needle valve of the present invention and FIG. 25 is a schematic perspective view of the needle valve of the present invention. The needle valve 9 is composed of a cylinder 91 and a bottom disc 92. An upper sealing slope 93 is formed at the junction of the 92 and the cylinder 91, and the lower sealing slope 811 of the small piston 8 can be sealed against the upper sealing slope 93 of the needle valve 9;

The needle valve 9 passes from the bottom to the inner cylinder 81 of the small piston 8 and extends into the hollow passage 61 of the connecting rod 6. The upper portion of the needle cylinder 91 penetrates the waist drum shaped hole 611 of the connecting rod 6 and is formed by a waist drum shaped card. The two straight sides of the hole 611 are clamped, and a flow path is formed between the two sides of the cylinder 91 and the two curved sides of the waist drum shaped hole 611. Below the waist drum shaped hole 611, the periphery of the needle cylinder 91 is provided. A plurality of radial ribs 911 form a flow path between adjacent ribs 911.

The upper end of the spring 10 is positioned in the annular groove 722 on the bottom surface of the connecting sleeve 7, and the lower end of the spring 10 is positioned in the spring groove 1421 of the upper chamber 141 of the cylinder 14, and on the inner side of the spring groove 1421, the lower chamber 142 passes through the small chamber. The piston 8 is isolated from the upper chamber 141 such that the spring 10 is not in fluid communication with the lower chamber 142 Touch.

The check valve 13 is disposed at the liquid inlet 1422 at the bottom of the cylinder lower chamber 142.

The structural principle of the utility model is:

As shown in FIG. 2, in the normal state, the lower chamber 142 of the cylinder is already filled with fluid, and the upper chamber 141 of the cylinder is air, and the exhaust hole 1411 of the upper chamber 141 is closed by the large piston 5, the cylinder 14 The inside is not connected to the outside and remains sealed;

At this time, the lower seal ring 431 of the air valve 4 and the upper seal 531 ring of the large piston 5 are not sleeve-sealed, and the air holes 532 communicate the upper and lower portions of the upper chamber of the cylinder upper chamber 141 which are divided by the large piston 5. However, since the upper sealing bevel 721 of the connecting sleeve 7 and the lower sealing bevel 411 of the large piston 5 are sealed against each other, the gas in the upper chamber 141 of the cylinder cannot enter the inner cavity of the air valve 4, and at the same time, the upper side of the needle valve 9. The sealing bevel 93 and the lower sealing bevel 811 of the small piston 8 are sealed against each other, so that the fluid in the lower cylinder chamber 142 cannot enter the hollow passage 61 of the connecting rod 6.

As shown in Fig. 3, the pressing cover (about 2 mm) is slightly pressed, and the lower edge of the cylinder 11 of the gland 1 abuts against the skirt 43 of the air valve 4 to press the air valve 4, but at this time, the large piston 5 and the small piston 8 The position remains the same. The lower seal ring 421 of the air valve 4 and the upper seal ring 531 of the large piston 5 are sealed with each other to isolate the upper and lower portions of the large piston 5 from each other. Since the air valve 4 also moves down against the top connecting sleeve 7, the upper sealing bevel 721 of the connecting sleeve 7 is disengaged from the lower sealing bevel 511 of the large piston 5, and the air below the large piston 5 in the upper chamber 141 of the cylinder can be At the same time, the second screen 41 of the air valve 4 also pushes the connecting rod 6 and the needle valve 9 downward together, so that the upper sealing slope 93 of the needle valve 9 and the lower sealing slope 811 of the small piston 8 Upon exiting, fluid within the lower cylinder chamber 142 can enter the hollow passage 61 of the connecting rod 6.

In addition, since the space above the large piston 5 in the upper chamber 141 of the cylinder is gradually enlarged, and the position of the large piston 5 is away from the exhaust hole 1411, air is filled from the outside of the nozzle into the upper chamber 141 of the cylinder, and is closed by the air valve 4. The sealing ring 421 is sealed with the upper sealing ring 531 of the large piston 5, the incoming air does not enter the space below the large piston 5, and the original air in the space below the large piston 5 will be pressed with the gland. It is gradually squeezed into the inner cavity of the air valve 4 to mix with the fluid. As shown in FIG. 4, the pressing of the gland 1 is continued, the lower sealing ring 421 of the air valve 4 abuts against the connecting ring 53 of the large piston 5 to press down the large piston 5, and the lower edge of the connecting rod 6 also abuts against the small piston 8. The ring 83 is connected to press down the small piston 8. The space below the large piston 5 in the upper chamber 141 of the cylinder is gradually compressed, and the gas continuously enters the inner cavity of the air valve 4 via the gas passage between the air valve 4 and the connecting sleeve 7; and the space in the lower chamber 142 of the cylinder is also Gradually compressed, fluid from the needle valve 9 and the fluid passage of the inner cylinder 81 of the small piston 8 continuously enters the hollow passage 61 of the connecting rod 6 and communicates with the connecting rod hollow passage 61 in the air valve 4 cavity, in the inner cavity of the air valve 4 ( Alternatively, it is also possible to mix the gas and the fluid in the hollow passage 61 of the connecting rod, and then form a rich foam through the second screen 41 on the air valve 4 and the first screen 21 on the net plug 2, from the gland The flow path 12 of the 1 and the outlet are ejected.

After the required amount is ejected, the gland is released, and the connecting sleeve 7 and the air valve 4 are moved upward by the restoring force of the spring 10. In the upper chamber 141 of the cylinder, the upper sealing bevel 721 of the connecting sleeve 7 and the lower sealing bevel 511 of the large piston 5 are again sealed against each other, and the lower sealing ring 421 of the air valve 4 and the upper sealing ring of the large piston 5 are again sealed. The 531 is disengaged from each other, so that the air holes 532 are opened, and air is gradually introduced from above the large piston 5 through the air holes 532 into the space below the large piston 5, and the large piston 5 is reset. In the lower chamber 142 of the cylinder, the connecting sleeve 7 pushes the expanding neck portion 62 of the connecting rod 6 to raise the connecting rod 6 and the needle valve 9, and the upper sealing inclined surface 93 of the needle valve 9 and the lower sealing inclined surface 811 of the small piston are mutually reciprocated. Against the top seal, the disc 92 at the bottom of the needle valve 9 will also drive the small piston 8 up and down.

In addition, since the lower seal ring 421 of the air valve 4 is disengaged from the upper seal ring 531 of the large piston 5, the air in the space above the large piston 5 passes through the air hole 532 into the lower space, and the volume of the upper space is gradually reduced, and the space in the lower space is The volume gradually increases, and the air exchange is completed. Finally, the large piston 5 is reset and the vent hole 1411 is blocked to prepare for the next pressing.

Claims

Claim

1. A foam nozzle mounted on a bottle mouth of a fluid container, the nozzle is formed by a gland, a screw cap and a cylinder from top to bottom, and the gland can be moved up and down with respect to the screw cap, wherein a hollow cylinder is arranged in the middle of the gland The inner side of the cylinder forms a flow channel; the screw cap is rotated or snapped to the bottle mouth of the fluid container; the cylinder is disposed inside the bottle mouth of the fluid container, the upper edge is stuck above the bottle mouth, and the inner cavity of the cylinder is divided into the upper chamber and the lower chamber The room is characterized in that: a screen, an air valve, a connecting rod, a large piston, a spring, a small piston, a needle valve and a check valve are arranged in the outer casing, and the towel is:

The screen is provided with at least two pieces, which are horizontally disposed in the flow passage of the gland, and includes a first screen formed on the net plug and a second screen formed on the air valve, and the net plug is stuck on the gland The inner side of the hollow cylinder is positioned, the net plug is round tubular, the first screen is arranged at the bottom, and the gauze is arranged at the top;

A large piston is arranged in the upper chamber of the cylinder, and is composed of an inner tube, an outer tube and a connecting ring connecting the middle of the inner and outer tubes. The inner tube is sleeved on the outer side of the middle portion of the connecting rod, and the large piston connecting ring Forming a ring of upper sealing ring, a plurality of air holes are arranged on the connecting ring between the upper sealing ring and the inner tube, and the lower sealing ring on the air valve and the upper sealing ring of the large piston are sealed with each other, a lower sealing slope is formed on the inner side of the bottom of the round tube, and the upper sealing slope of the connecting sleeve and the lower sealing slope of the large piston are sealed against each other;

A small piston is arranged in the lower chamber of the cylinder, and is composed of a hollow inner and outer cylinder and a connecting ring connecting the inner and outer cylinders in the middle, and a lower sealing slope is arranged inside the bottom of the inner cylinder, the bottom of the connecting rod The end can be pressed down to the connecting ring of the small piston; a spring, the upper end abuts the top connecting sleeve, and the lower end abuts the lower chamber of the top cylinder;

2. The foam nozzle according to claim 1, wherein: the first screen has the same structure as the second screen, and the screen is divided into upper and lower layers, and a transverse passage is formed between the upper layer and the lower layer, and the upper layer And the lower layer is provided with a diamond-shaped mesh, and the upper diamond-shaped mesh and the lower diamond-shaped mesh are staggered, and the upper diamond-shaped mesh, the transverse channel and the lower diamond-shaped mesh form a channel.

The foaming nozzle according to claim 1, wherein: a cylindrical inner wall of the gland is symmetrically disposed with a pair of circular arc ribs, and the outer wall sections of the net plug cylinder and the air valve cylinder respectively form a circular arc rib The matching rounded face allows the mesh plug and air valve to be positioned radially inside the gland cylinder.

The foaming nozzle according to claim 1 or 3, wherein: the bottom edge of the cylinder of the air valve is provided with a plurality of convex teeth, and an air inlet is formed between adjacent convex teeth, and the inside of the air valve cylinder The upper part of the surface is provided with a plurality of ribs, and an air passage is formed between the adjacent ribs.

The foaming nozzle according to claim 1, wherein: the upper portion of the connecting rod forms an enlarged diameter portion, and the top edge of the enlarged diameter portion is provided with a plurality of convex teeth, which are formed between adjacent protruding teeth. Gas-liquid communication port.

The foaming nozzle according to claim 1, wherein: a middle portion of the hollow passage of the connecting rod is provided with a waist drum shaped card hole, and an upper portion of the needle valve cylinder penetrates the waist drum shaped card hole and is formed by a waist drum shaped card. The two straight sides of the hole are clamped, and a flow path is formed between the two sides of the cylinder and the two curved sides of the waist-shaped card hole. Below the waist drum-shaped hole, a plurality of radial protrusions are arranged on the periphery of the cylinder of the needle valve. The ribs form a flow path between adjacent ribs.

7. The foam showerhead according to claim 1, wherein: the bottom surface of the connecting sleeve is provided with an annular groove, and the upper end of the spring is positioned in the annular groove.

8. The foam showerhead of claim 1 wherein: said lower chamber bottom of said cylinder A spring groove is provided, and on the inner side of the spring groove, the lower chamber is separated from the upper chamber by a small piston, and the lower end of the spring is positioned in the spring groove.

9. The foam spray head according to claim 1, wherein: said cylinder is provided with an exhaust hole at an upper chamber, and a large piston is located in the upper chamber and located at the exhaust hole, and the cylinder inner chamber is The outside world is isolated.

10. A foam applicator according to claim 1 or claim 9 wherein: a gasket is provided between the upper edge of the cylinder and the mouth of the bottle.