JP5057386B2 - Former pump - Google Patents

Description

  The present invention relates to a former pump, and more particularly to a former pump capable of cleaning the inside.

  There has been proposed a former pump that mixes and foams the liquid in the attached container body and the outside air and ejects it as foam (see, for example, Patent Document 1).

The former pump of Patent Document 1 is provided with a liquid cylinder in which a first piston slides, an air cylinder in which a second piston slides, a jet port, and a first piston and a first piston. A pump head linked to two pistons for driving both pistons, a gas-liquid mixing chamber in which the liquid sent out from the liquid cylinder and the air sent out from the air cylinder merge, the jet outlet and the gas-liquid mixing chamber; And a foaming member installed between the two, the pump head is pushed down so that the liquid in the container and the outside air are merged in the gas-liquid mixing chamber, foamed through the foaming member, and ejected in the form of bubbles from the ejection port. It is composed.
JP 09-118351 A

  This type of pump is generally used in such a way that when the liquid in the attached container is used up, the pump is discarded and a new container with a pump is purchased. However, due to various recent circumstances, it is often necessary to refill only the liquid in the container and use the pump as it is, and due to the good performance of the pump, it is required to use it for a very long time compared to the conventional one. It has become.

  On the other hand, this type of former pump is provided with an air cylinder as described above, and outside air is introduced into the air cylinder, and infiltration of slight moisture is unavoidable due to its mechanism. May cause contamination by germs, and the probability increases especially in the case of long-term use.

  In addition, since this type of former pump does not consider the internal cleaning at all, the fitting cap and the cylinder are fitted with a strong fitting strength that cannot normally be removed.

  The present invention has been made in view of the above points, and proposes a former pump that can easily clean an air cylinder by a simple operation and can be used hygienically for a long time. We also propose a former pump that can be cleaned without causing inconveniences such as damage or loss of complicated internal parts. Furthermore, the present invention proposes an excellent former pump that can be easily returned to its original state after washing and has no risk of loss of function.

The first means is configured as follows. That is, the upper end portion is fixed to the mounting cap A fitted to the outer periphery of the mouth and neck portion 101 of the container body 100 and suspended in the container body 100, and the large-diameter air cylinder 20 and the small-diameter liquid cylinder 30 are provided. A cylinder member B that is concentrically connected vertically and a liquid piston D ₁ that slides in the liquid cylinder 30 protrude from the lower outer periphery of the stem D ₂ and slide in the air cylinder 20. An air piston D ₃ is linked to the upper part of the outer periphery of the stem D ₂ , and the discharge head D ₄ is fitted to the upper end of the stem so as to be able to move up and down in an upward biased state. moving by is combined with air in the liquid and the air cylinder 20 of the hydraulic cylinder 30 is foaming, the a former pumps as configured to discharge a foam from the discharge port of the discharge head D _4, mounting cap a Concave along the circumferential surface of the annular projection 13 provided on the inner circumference. An engagement groove 15 having an insertion groove 16 formed in the lower surface is provided, and an engagement protrusion 25 is inserted into the engagement groove 15 after being inserted through the insertion groove 16, and the engagement protrusion 25 is fitted to the outer periphery of the air cylinder 20. projecting from the, following by the upper portion capable fitted detachably to the mounting cap a of the cylinder member B configured to removably cylinder member B Te, washed configured to be able to air cylinder 20.

The second means is configured as follows. That is, in the first means, the spacer F for preventing the ejection head D ₄ from being pushed down is detachably fitted between the ejection head D ₄ and the mounting cap A.

The former pump of the present invention has a specific effect that it can be used hygienically and smoothly over a long period of time by cleaning the inside of the air cylinder 20 as necessary. In addition, since the cylinder member B can be cleaned by removing it from the mounting cap A, the operation procedure is simple. After the cleaning, the cylinder member B can be re-fitted to the mounting cap A to restore the original state. can do. Further, since the air cylinder 20 of the removed cylinder member B has a large opening at the upper end, it can be easily cleaned. Further, the stem D ₂ the outer surface or air piston D ₃ bottom surface easy to perform cleaning so completely exposed so would remove the cylinder member B is to detail.

  Further, a concave recess is formed along the peripheral surface of the annular protrusion 13 provided on the inner peripheral upper portion of the mounting cap A, and an engagement concave groove 15 having an insertion groove 16 formed in the lower surface is provided, and inserted through the insertion groove 16. When an engagement protrusion 25 that is rotated backward and fitted into the engagement groove 15 is provided on the outer periphery of the air cylinder 20, and the upper end of the cylinder member B is detachably fitted to the mounting cap A. The cylinder member B can be easily engaged and disengaged only by rotating the cylinder member B with respect to the attachment cap A, so that the cylinder member B can be easily attached and detached. Further, the vertical width occupied by the locking mechanism can be narrower than that of a screw or the like, and the pump can be configured to be short.

When the spacer F that prevents the discharge head D ₄ from being pushed down is detachably fitted between the discharge head D ₄ and the mounting cap A, the operating member D is mounted when the cylinder member B is cleaned. Since it can be fixed immovably with respect to the cap A, it is possible to reliably prevent inconveniences such as a complicated part of the actuating member D being deformed by movement, and cleaning the outer surface of the stem D ₂ and the lower surface of the air cylinder 20 It becomes extremely easy to do. Further, since the operation member D is fixed when the cylinder member B is removed and mounted, there is an advantage that the operation can be performed smoothly.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 5 show an example of a former pump 1. The former pump 1 includes a mounting cap A, a cylinder member B, a pipe C, an operating member D, a poppet valve element E, and a spacer F. And.

  The mounting cap A is for fixing the former pump 1 to the container body 100, and is a window through which the operating member D penetrates from the upper end edge of the peripheral wall 10 to be fitted to the outer periphery of the mouth neck portion 101 of the container body 100. A top wall 11 having a hole is extended, and a guide cylinder 12 is erected upward from the peripheral edge of the window hole. An annular protrusion 13 is projected from the upper end of the inner periphery of the peripheral wall 10, and a locking cylinder 14 is suspended from the annular protrusion 13 at a predetermined interval inside the annular protrusion 13. Further, an annular engagement groove 15 is provided along the circumferential surface of the annular protrusion 13 at a position below the lower end of the locking cylinder 14. As shown in FIG. 3 or FIG. 4, a pair of opposed insertion grooves 16 are formed in the engagement grooves 15 on both sides of the air cylinder 20. The engaging groove 15 constitutes a locking means for locking the cylinder member B to the mounting cap A, and is formed in an annular shape in the illustrated example, but is not limited thereto, and an appropriate width can be selected. .

  The cylinder member B has a small-diameter liquid cylinder 30 extending concentrically below the large-diameter air cylinder 20. The air cylinder 20 has a tapered bottom wall portion 22 that rises inward from the lower end edge of the peripheral wall portion 21, and the upper end edge of the liquid cylinder 30 is integrally connected to the inner peripheral edge of the bottom wall portion 22. Is configured. In addition, an engagement cylinder 24 is erected in a double cylinder shape via an flange 23 at the outer peripheral upper end portion of the peripheral wall portion 21, and a pair of engagement protrusions 25 are protruded at opposing positions on the outer surface of the flange 23. . Further, a knob cylinder 26 having a plurality of vertical protrusions for preventing slipping is vertically provided on the outer surface downward from the lower end of the peripheral wall portion 21 of the air cylinder 20. Then, each engagement protrusion 25 is inserted from each insertion groove 16 and inserted into the engagement groove 15 above the insertion groove 16. At this time, the engagement cylinder 24 is inserted between the annular protrusion 13 and the locking cylinder 14. Is done. Next, when the cylinder member B is rotated, each engagement protrusion 25 moves to the engagement groove 15 portion where the insertion groove 16 is not present, and the cylinder member B is securely fixed to the mounting cap A. Note that the method of detachably engaging the cylinder member B with the mounting cap A is not limited to the above-described means. For example, a screw tube such as a screw cylinder is suspended from the lower surface of the mounting cap A and the cylinder outer surface is screwed. It is also possible to adopt a wearing means.

  The liquid cylinder 30 is a taper-shaped bottom wall in which the upper end edge of the peripheral wall portion 31 is connected to the inner peripheral edge of the bottom wall portion 22 of the air cylinder 20 and hangs downward, and the center opens from the lower end edge of the peripheral wall portion 31 The portion 32 is extended, and the upper surface of the bottom wall portion 32 is configured as a valve seat 33 for a suction valve. Further, a pipe fitting cylinder 34 is integrally suspended downward from the central opening edge of the bottom wall portion 32. The upper end of the pipe C for suction is fitted to the pipe fitting cylinder 34, and the lower end thereof is suspended from the lower end portion in the container body 100. Further, a plurality of locking ribs 35 in the circumferential direction are provided projecting from the outer edge of the bottom wall 32 on the inner surface of the liquid cylinder 30 to the lower end of the peripheral wall 31. An upward stepped portion is provided at the upper and lower intermediate portions of each locking rib 35.

Actuating member D is obtained by assembling vertically movable above biased state with respect to the cylinder member B, the liquid piston D _1, and the stem D _2, and the air piston D _3, and a discharge head D ₄ I have.

The liquid piston D ₁ has an upper and lower skirt-shaped sliding portion 42 projecting outward from the outer periphery of the lower end of the fitting tube portion 40 fitted to the lower portion of the stem D ₂ , and the sliding portion 42 is placed in the liquid cylinder 30. The circumference is fitted so as to be liquid-tightly slidable. The upper end portion of the fitting tubular portion 40 forms a valve seat 41 of the check valve ridges form at the vertical direction intermediate portion of the stem D _2. Then, the coil spring s interposed therebetween to bias the actuating member D upward at all times between the upward stepped portion of the fitting tubular portion 40 the lower surface and each locking rib 35 of the liquid piston D _1.

The stem D ₂ has a cylindrical shape with upper and lower ends opened, and a liquid piston D ₁ that slides on the liquid cylinder 30 protrudes from the outer periphery of the lower part, and an air piston D that slides in the air cylinder 20. ₃ is linked to the upper part of the outer periphery, and is mounted in the liquid cylinder 30 and the air cylinder 20 so as to be movable up and down. In the stem D ₂ upper, it forms a valve seat 50 for the discharge valve forming a flange, a ball-shaped valve body 51 forms a discharge valve 52, the addition, the lower surface of the valve seat 50 for the discharge valve A plurality of circumferential ridges 53 project in the circumferential direction from the valve seat 41 just above the check valve. Further, a valve seat 54 for an air discharge valve projecting in a flange shape is projected on the upper surface of the outer surface, and a plurality of circumferential ridges 55 project on the outer periphery of the cylinder wall above.

The air piston D ₃ has a cylindrical valve portion 60 on the inner peripheral edge fitted to the outer periphery of the stem D ₂ so as to be able to move up and down with a small width, and via a stepped wall portion 61 extending from the outer periphery of the cylindrical valve portion 60. The upper and lower skirt-shaped sliding portions 62 fitted to the inner periphery of the air cylinder 20 so as to be liquid-tightly slidable are extended. The cylindrical valve portion 60 is movable vertically fitted on the vertical projection 55 the outer surface of the stem D ₂ periphery. Also, as will be described later, on the outer peripheral upper end portion of the stem D _2, the inner circumferential lower end portion is fitted to the lower end of the annular recess circumferentially provided with a vertical tube, the cylindrical valve portion 60 thereof an annular recess top surface And the valve seat 54 for the air discharge valve are mounted so as to be vertically movable, and the air discharge valve 63 is constituted by the valve seat 54 for the air discharge valve. The air discharge valve 63 is closed when the operating member D shown in FIG. 1 is pushed up to the uppermost position, opens when the operating member D is pushed down, and is further attached upward from the depressed state. It is configured to close when it rises due to power. Further, the stepped wall portion 61 of the air piston D ₃ is provided outside air introducing valve 64 for introducing outside air. The outside air introduction valve 64 is opened by the negative pressure in the air cylinder 20 when the lowered operating member D rises, and introduces outside air.

The discharge head D ₄ has a vertical cylinder 70 fitted to the upper end of the outer periphery of the stem D ₂ suspended from the back surface of the top plate 71, and an outer vertical wall 72 is suspended from the periphery of the top plate 71. An inner vertical wall 73 is suspended between 70 and the outer vertical wall 72, and the base end is opened at the upper end of the vertical cylinder 70, and passes through the inner vertical wall 73 and the outer vertical wall 72. Then, the nozzle 74 projecting forward is extended, and the discharge port is opened at the tip. Further, the inner peripheral lower end of the vertical tube 70 is recessed annular recess 75, also of inner vertical tube 70 circumference to the stem D ₂ directly above, fitting the cylindrical member 76 of the partition wall that diameter lower I wear it. Then, it passes between the stem D ₂ and the vertical tube 70 from the annular recess 75, and provided an air passage 77 communicating with the tubular member 76 below the stem D _2, between the cylindrical member 76 and the discharge valve 52 A gas-liquid mixing chamber R is defined.

  Further, a foaming member 78 is provided downstream of the gas-liquid mixing chamber R. The foaming member 78 in this case is configured by preparing a pair of cylindrical bodies 78b with mesh 78a stretched and fitting them into the cylindrical member 76 so that the mesh 78a has an upper end and a lower end.

The poppet valve body E is provided with a plurality of circumferentially extending locking projections 80 positioned on the outer surface of the lower end portion between the locking ribs 35 of the liquid cylinder 30, and stem D from the liquid cylinder 30. ₂ It has a length that reaches the lower part. The lower peripheral edge portion is formed in a tapered shape to form a suction valve 81 with the valve seat 33 for the suction valve.From the position where the valve seat 33 for the suction valve comes into contact with the lower surface, each locking projection 80 is The coil spring s is mounted so that it can move up and down to a position where it abuts the lower surface. Above each locking projection 80, a lower part is formed into a large diameter part and an upper part is formed into a diameter part, and a check valve body 82 that expands into a tapered cylindrical shape is formed at the upper end of the small diameter part. A check valve 83 is formed by the valve body 82 and the valve seat 41 for the check valve. A plurality of circumferential grooves 84 are vertically provided on the outer periphery of the large diameter portion, and a plurality of vertical protrusions 85 are provided on the outer periphery of the small diameter portion.

The spacer F includes an arcuate plate-like fitting portion 90 that is detachably fitted to the outer periphery of the guide tube 12 and a plate-like knob 91 that protrudes rearward from the rear surface of the fitting portion 90. Fitting portion 90 of the mounting the spacer F prevents depression of actuating member D abuts the inner depending wall 73 the lower surface of the ejection head D _4. Further, when mounting, the fitting portion 90 is forcibly fitted to the outer periphery of the guide cylinder 12 so as to open elastically. Incidentally, the spacer F are not limited to this embodiment, it can be variously employed as long as the form which fits detachably between the ejection head D ₄ in order to prevent depression of the actuating member D and the mounting cap A.

The former pump 1, depressing the state ejection head D ₄ Remove the spacer F from FIG. 1, the air piston is relatively increased to relative to the stem D ₂ opens the air discharge valve 63 is lowered The air in the air cylinder 20 is pressurized by the air piston D ₃ and introduced into the gas-liquid mixing chamber R through the air passage 77. On the other hand, the lowering until brought into contact with the valve seat 33 for the suction valve poppet E in the liquid cylinder 30 is lowered, relatively elevated to check against the poppet valve body E is the stem D ₂ The valve 83 is opened, and the pressurized liquid in the liquid cylinder 30 is introduced into the gas-liquid mixing chamber via the discharge valve 52, where the gas-liquid is mixed. At this time the poppet valve body E is relatively raised with respect to the stem D ₂ slides the check valve body 82 in the longitudinal ridges 53 the inner surface of the stem D _2. The gas-liquid mixed in the gas-liquid mixing chamber passes through the foaming member 78 and foams, and is discharged from the nozzle 74 as bubbles.

When the pressure of the discharge head D ₄ is released, the actuating member D is lifted by the biasing force of the coil spring s, and the air piston D ₃ is lowered relative to the stem D ₂ and the air discharge valve 63 is closed. Due to the negative pressure in the air cylinder 20, the outside air introduction valve 64 is opened, and the outside air is introduced into the air cylinder 20. On the other hand, the poppet valve body E by increasing the stem D ₂ rises a check valve body 82 by the frictional force of the longitudinal ridges 53, the container to the suction valve 81 is opened negative pressure to the liquid cylinder 30 in body The liquid in 100 is introduced, at which time the discharge valve 52 is closed. Poppet valve body E is raised to the engagement projection 80 is brought into contact with the lower surface of the coil spring s, but then for the stem D _2, the check valve body 82 abuts the valve seat 41 of the check valve Relatively descends until touching.

When the former pump 1 is washed, for example, the former pump 1 is removed from the container body 100 with the spacer F attached, and then the cylinder member B is attached to the mounting cap A, and each engagement protrusion 25 The cylinder member B can be removed from the mounting cap A by rotating the cylinder member B to a position that matches the insertion groove 16 and pulling the cylinder member B downward. Thereafter, the air cylinder 20 inner surface of the removed cylinder member B, the lower surface of the air piston D ₃ in the mounting cap A, and the outer surface of the stem are cleaned. The washing method can be selected as appropriate. For example, jetting of washing water, flushing with washing water, vertical movement in washing water, etc. are preferably employed.

It is a longitudinal cross-sectional view of a former pump. Example 1 It is a longitudinal cross-sectional view of the disassembled state of a former pump. Example 1 It is a bottom view of the former pump of FIG. Example 1 FIG. 3 is a bottom view of the former pump of FIG. 2. Example 1 It is a top view of a cylinder member. Example 1

Explanation of symbols

1 ... Former pump A ... Installation cap
10 ... peripheral wall, 11 ... top wall, 12 ... guide cylinder, 13 ... annular projection, 14 ... locking cylinder, 15 ... engagement groove, 16 ... insertion groove B ... cylinder member
20 ... Air cylinder, 21 ... Surrounding wall, 22 ... Bottom wall, 23 ... Flange, 24 ... Locking cylinder,
25 ... engaging projection, 26 ... knob, 30 ... liquid cylinder, 31 ... peripheral wall, 32 ... bottom wall,
33 ... Valve seat for suction valve, 34 ... Pipe fitting cylinder, 35 ... Locking rib C ... Pipe D ... Actuating member
D ₁ … Liquid piston
40 ... Fitting cylinder part, 41 ... Valve seat for check valve, s ... Coil spring
D ₂ ... Stem
50 ... Valve seat for discharge valve, 51 ... Ball valve, 52 ... Discharge valve, 53 ... Vertical ridge,
54 ... Valve seat for air discharge valve, 55 ... Vertical projection,
D ₃ ... Piston for air
60 ... Cylindrical valve part, 61 ... Stepped wall part, 62 ... Sliding part, 63 ... Air discharge valve,
64… Outside air introduction valve
D ₄ … Discharge head
70 ... Vertical cylinder, 71 ... Top plate, 72 ... Outer hanging wall, 73 ... Inner hanging wall, 74 ... Nozzle,
75 ... annular recess, 76 ... cylindrical member, 77 ... air passage, 78 ... foaming member, 78a ... mesh,
78b ... Cylinder, R ... Gas-liquid mixing chamber E ... Poppet valve
80: Locking projection, 81 ... Suction valve, 82 ... Check valve body, 83 ... Check valve, 84 ... Groove,
85 ... Vertical ridge F ... Spacer
90 ... Fitting part, 91 ... Pick part
100 ... container
101 ... Mouth and neck

Claims (2)

Neck of the container (100) (101) outer periphery fitted so was attached cap container body to secure the upper portion (A) with hanging on (100), an air cylinder having a larger diameter (20) and a small diameter liquid cylinder (30) and upper and lower concentrically formed by continuously to the cylinder member (B), liquid piston (D ₁₎ that slides the liquid cylinder (30) in the stem (D ₂ ) as well as projecting from the outer bottom, the air piston which slides in the inside of the air cylinder (20) and (D ₃₎ is linked to the stem (D ₂₎ an outer peripheral top, fitted the stem upper end to the ejection head (D ₄₎ and a wear actuated mounted vertically movable in upward biasing state member (D), the actuating member moved vertically by in the liquid cylinder (30) the liquid and the air cylinder (20) of the (D) by merging air frothing, as will be discharged as foam from the discharge port of the discharge head (D ₄₎ A former pump form, recessed along the circumferential surface of the annular projection provided inside the peripheral upper mounting cap (A) (13), bored insertion groove on the lower surface (16) Kakarigo凹An engagement protrusion 25 is provided on the outer periphery of the air cylinder (20) to be provided with a groove (15), rotated after being inserted through the insertion groove (16), and fitted into the engagement groove (15). , hereinafter configured to removably cylinder member (B) and the upper end portion detachably fitted to the mounting cap (a) of the cylinder member (B) Te, washed capable constitutes an air cylinder (20) A former pump characterized by that. The former pump according to claim 1, wherein a spacer (F) for preventing the discharge head (D ₄ ) from being pushed down is detachably fitted between the discharge head (D ₄ ) and the mounting cap (A) .

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