JP2009208783A - Foamer pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foamer pump which is equipped with a cylinder 20 for air and a cylinder 30 for liquid, and moves a working member D equipped with a piston D<SB>3</SB>for air and a piston D<SB>1</SB>for liquid sliding in individual cylinders upward and downward to join the air and the liquid in the individual cylinders and to foam them and delivers them as a foam, and to enable cleaning in the cylinder for the air having a large possibility of staining by a simple operation. <P>SOLUTION: An opening h for cleaning the inside of the cylinder 20 for the air is formed in the cylinder 20 for the air so as to be openable and closeable, and a cover wall 56 covering the undersurface of the piston D<SB>3</SB>for the air and having a vent hole 57 is extended from a stem D<SB>2</SB>. <P>COPYRIGHT: (C)2009,JPO&INPIT

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 frequently used only by refilling the liquid in the container body, and the pump is used as it is, and the performance of the pump is also good, so that it is required to be used 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 can easily clean the inside of the air cylinder by a simple operation and can be used in a sanitary manner for a long time. We propose a former pump that will not cause damage to complicated parts even if it is used. Furthermore, even if a consumer accidentally uses a rod-like object other than a cleaning tool for cleaning, an excellent former pump that can protect complex internal parts is proposed. In addition, a former pump that can be easily returned to its original state after cleaning is proposed.

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, the air cylinder A cleaning opening h for cleaning the inside of the air Openably formed on Da 20, the cover wall 56 having a and covers the lower surface of the air piston D ₃ vent holes 57, and extended from the stem D _2.

  The second means is configured as follows. That is, in the first means, the vent hole 57 is formed in the hanging wall portion 56 a of the cover wall 56.

  The third means was configured as follows. That is, in the first means, a large number of the vent holes 57 are formed in the cover wall 56 as small holes.

The fourth means is configured as follows. That is, at any means of said first means to the third means, the cover wall 56, fixed to the stem D ₂ to form the stem D ₂ separately.

The fifth means is configured as follows. That, in the unit in any one of the first means to the fourth means, the airtight cylinder member B, the upper member B ₁ which constitutes the peripheral wall 21 of the air cylinder 20, the upper member B ₁ In addition, the bottom wall portion 22 of the air cylinder 20 and the lower member B ₂ constituting the peripheral wall portion 31 and the bottom wall portion 32 of the liquid cylinder 30 are removed, and the lower member B ₂ is removed. Thus, the lower end opening of the air cylinder peripheral wall portion 21 is configured as the cleaning opening h.

  The sixth means is configured as follows. That is, in any one of the first to fourth means, the inner window 26 is opened at the lower end of the peripheral wall 21 of the air cylinder 20, and the inner window 26 is hermetically closed. The outer cylinder 28 is rotatably fitted to the outer periphery of the air cylinder 20, and an outer window 28 that communicates with the inner window 26 by the rotation of the outer cylinder 27 is provided in the outer cylinder 27. The inner window 26 and the outer window 28 An opening h for cleaning was formed.

The seventh means is configured as follows. That is, in any one of the first to sixth 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. Combined.

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. Further, since when the cleaning covers the piston D ₃ bottom surface for delicate air cover wall 56 in a complex structure, it is possible to prevent inconvenience such as those damaged as much as possible, cleaning using the cleaning tool such as a brush The same applies to the case of.

The vent hole 57, when formed in vertical wall portion 56a of the cover wall 56, problems such as pecking air piston D ₃ from the vent hole 57 be used cleaning tool such as a brush during cleaning There is no, and safe cleaning can be performed.

Similarly, when a large number formed in the cover wall 56 of the vent hole 57 as a small hole, no inconvenience such as pecking air piston D ₃ from the vent holes 57, allows a safe cleaning.

The cover wall 56, when secured to the stem D ₂ to form the stem D ₂ separately can select a suitable material for the cover wall 56, also by sticking to the existing operating member D There is an advantage that can be formed.

The cylinder member B is connected to the upper member B ₁ constituting the peripheral wall portion 21 of the air cylinder 20 and the upper member B ₁ in an airtight and detachable manner, and the bottom wall portion 22 of the air cylinder 20 is connected to the liquid member. The lower end B ₂ constituting the peripheral wall portion 31 and the bottom wall portion 32 of the cylinder 30 is configured, and the lower end opening of the air cylinder peripheral wall portion 21 is configured as the cleaning opening h by removing the lower member B ₂ . in this case, since the air piston D ₃ is fitted to the air cylinder 20, actuating member D is stable, easily cleaned. Moreover, since the cleaning opening h can be opened to the same size as the large-diameter air cylinder 20, cleaning is easy from this point, and cleaning with a cleaning device such as a brush is extremely easy. There is an advantage that can be done.

An inner window 26 is opened at the lower end of the peripheral wall 21 of the air cylinder 20, and a cylindrical closing cylinder 27 that closes the inner window 26 in an airtight manner is rotatably fitted to the outer periphery of the air cylinder 20. When the outer window 28 communicating with the inner window 26 is provided in the closing cylinder 27 by the rotation of the inner window 26 and the opening h for cleaning is formed by the inner window 26 and the outer window 28, the closing cylinder 27 is set at a predetermined angle for cleaning. By rotating it, it is possible to prepare the position very easily, and even after cleaning, the closed cylinder 27 can be restored to its original state by a simple operation of rotating a predetermined angle. Further, since the inner window 26 is closed by the cylindrical closing cylinder 27, the airtightness in the air cylinder 20 can be sufficiently maintained, and there is no possibility of a function deterioration. Further, the inner window and an air piston D ₃ in the presence of the cover wall 56 even if the outer windows incorrectly consumers from opening h for washing consists Otoso dirt and insert a rod being damaged Can be prevented.

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 removed when the air cylinder 20 is cleaned. Since it can be fixed immovably with respect to the mounting cap A, it is possible to avoid inconveniences such as the operating member D moving during cleaning and narrowing the cleaning range, and it is not necessary to hold down the operating member D. There is an advantage that the cleaning operation can be performed more easily.

  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. Further, a locking cylinder 13 is suspended from the lower peripheral edge of the top wall 11.

  The cylinder member B has a small-diameter liquid cylinder 30 extending concentrically below the large-diameter air cylinder 20. The air cylinder 20 is configured by extending a tapered bottom wall portion 22 that rises inward from the lower end edge of the peripheral wall portion 21, and connecting the upper end edge of the liquid cylinder 30 to the inner peripheral edge of the bottom wall portion 22. is doing. Further, an engagement cylinder 23 is erected in a double cylinder shape via a flange at the outer peripheral upper end of the peripheral wall 21 so that the engagement cylinder 23 is sandwiched between the peripheral wall 10 of the mounting cap A and the locking cylinder 13. The cylinder member B and the mounting cap A are fixed.

  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.

In the present invention, a cleaning opening h for cleaning the inside of the air cylinder 20 is formed in the air cylinder 20 so as to be openable and closable. In this example, the cylinder member B is composed of an upper member B ₁ and a lower member B _2, and the lower member B ₂ is removed to clean the lower end opening of the peripheral wall portion 21 of the air cylinder 20 inside the air cylinder. This is configured as an opening h for cleaning, so that the inside of the air cylinder 20 can be cleaned. Upper member B ₁ represents, constitutes in the peripheral wall portion 21 of the air cylinder 20 is constructed by vertically connecting tube 24 which is provided around the screw thread on the outer surface than the lower end of the peripheral wall portion 20. Further, the lower member B ₂ is to vertically a bottom wall portion 22 of the air cylinder 20, and a peripheral wall 31 and the bottom wall portion 32 of the liquid cylinder 30, the pipe fitting tube 34 to the lower end ing. Further, by extending the engagement portion 25 to the bottom wall 22 the outer peripheral edge of the air cylinder 20 is outer peripheral edge portion of the lower member B _2, and hermetically and detachably attached to the fitting portion 25 to the connecting tube 24 Yes. The fitting portion 25 is screwed to the outer periphery of the connecting cylinder 24, and is connected to the connecting cylinder 24 via a screw cylinder 25a having a thread on the inner periphery and a flange 25b extending inward from the lower end edge of the screw cylinder 25a. And a seal cylinder 25c fitted to the inner periphery so as to be airtight and detachable.

The upper member B ₁ and the lower member B ₂ are not limited to the above example, and a cleaning opening h that can clean the air cylinder 20 when the lower member B ₂ is removed is provided below the upper member B _1. Any structure can be used as long as it has a structure that opens to the surface, and the coupling position can be variously selected. However, coupling at a position of inhibiting the function of the air cylinder 20 and the hydraulic cylinder 30 is not preferable, for example, the separation of at no stroke range of the air piston D ₃ of the air cylinder 20 is not desirable.

  Further, the cleaning opening h is not limited to the one in the above-described form. For example, as shown in FIG. 8, the inner window 26 is opened at the lower end of the air cylinder 20 and the inner window 26 is hermetically closed. The outer cylinder 28 is rotatably fitted to the outer periphery of the air cylinder 20, and an outer window 28 that communicates with the inner window 26 by the rotation of the outer cylinder 27 is provided in the outer cylinder 27. The inner window 26 and the outer window 28 An opening h for cleaning may be formed. Further, although not shown, the upper end of the cylinder member B is detachably fitted to the mounting cap A so that the cylinder member B can be removed, and the upper end opening of the air cylinder 20 is configured as the cleaning opening h. It is also possible to do. It is also possible to adopt a configuration in which a window hole serving as an opening h for cleaning is formed in the bottom wall portion of the air cylinder 20 and a bottom lid for airtightly closing the window hole is detachably mounted. It is.

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.

In the present invention, a cover wall 56 is provided. The cover wall 56 extends from the stem D ₂ , covers the lower surface of the air piston D ₃ , and includes a vent hole 57. In the illustrated example, the upright vertical wall portion 56a of the outer periphery of the valve seat 54 of the air discharge valve, outwardly from the upper edge of the vertical wall portion 56a, and extending along the lower surface of the air piston D ₃ The outer edge is slidably in contact with the inner surface of the air cylinder 20. Vent 57 is a plurality formed in the vertical wall portion 56a, configured as abutting the top rim portion and projecting a plurality of spaces projections 58 in the circumferential direction at regular intervals to the upper surface of the piston D ₃ bottom surface air is doing. Although the cover wall 56 in the present embodiment is formed in the stem D ₂ integral, not limited to this, as shown in FIG. 6, may be secured to form the stem D ₂ separately. In this case, it can be fixed to the stem D ₂ by appropriate fixing means such as adhesion or fusion.

Further, the cover wall 56 is not limited to the case in which the vent hole 57 is provided in the hanging wall portion 56a as in the above example, but may be one in which the vent hole 57 is provided in the horizontal portion as shown in FIG. In this case, the vent hole 57 may be a small hole and a large number of vent holes 57 may be formed. It may be formed cover wall 56 also in this case separate from the stem D _2.

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. 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. The nozzle 74 projecting forward is extended, and a 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. The upper part of each locking projection 80 is formed with a lower part as a large diameter part and an upper part as a small diameter part, and at the upper end of the small diameter part, a check valve body 82 that expands into a tapered cylindrical shape is formed. 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 is composed of 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 Air in the air cylinder 20 is pressurized by the air piston D ₃ and is introduced into the gas-liquid mixing chamber R through the air passage 77 through the vent hole 57 of the cover wall 56. 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 cleaning the former pump 1 in the example of FIG. 1, for example, remove the Fomaponpu 1 from the container body 100, can remove the lower member B ₂ from the upper member B ₁ as shown in FIG. 2 by rotating it can. Then perform air cylinder 20 the inner surface of the lower end opening of the air cylinder 20, the stem D ₂ the outer surface, the cleaning of the cover wall 56 underside. The washing method can be selected as appropriate. For example, spraying of washing water, washing with washing water, vertical movement in washing water, etc. are preferably employed, and a cleaning tool such as a brush can be used in combination. .

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 principal part expanded sectional view 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 principal part expanded sectional view of a former pump. (Example 2) It is a principal part expanded sectional view of a former pump. (Example 3) It is principal part sectional drawing of a former pump. (Example 4)

Explanation of symbols

1 ... Former pump A ... Installation cap
10 ... wall, 11 ... top wall, 12 ... guide tube, 13 ... lock cylinder B ... cylinder member (B ₁ ... upper member, B ₂ ... lower member)
20 ... Cylinder for air, 21 ... Peripheral wall, 22 ... Bottom wall, 23 ... Engagement tube, 24 ... Connection tube,
25 ... fitting part, 25a ... screw cylinder, 25b ... flange, 25c ... seal cylinder, 26 ... inner window,
27 ... Blocking cylinder, 28 ... Outer window, 30 ... Cylinder for liquid, 31 ... Circumferential 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, 42 ... sliding part, 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, 56 ... Cover wall, 56a ... Vertical wall,
57… Vent hole, 58… Space 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 (7)

The upper end is fixed to the mounting cap A fitted to the outer periphery of the mouth / neck portion 101 of the container body 100 and hangs down in the container body 100, and the large-diameter air cylinder 20 and the small-diameter liquid cylinder 30 are vertically moved. A cylinder member B that is concentrically connected and a liquid piston D ₁ that slides in the liquid cylinder 30 protrude from the lower portion of the outer periphery of the stem D ₂ , and for air that slides in the air cylinder 20. The piston D ₃ is linked to the upper periphery of the stem D ₂ , the discharge head D ₄ is fitted to the upper end of the stem, and the operation member D is mounted so as to be movable up and down in the upward biased state. by merging the air in the liquid and the air cylinder 20 of the hydraulic cylinder 30 is foaming, a former pumps as configured to discharge a foam from the discharge port of the discharge head D _4, the air cylinder 20 A cleaning opening h for cleaning the air cylinder 20 Openably formed, former pump, characterized in that the cover wall 56 having an air piston D ₃ of the lower surface to the coating and vent 57, and extended from the stem D _2. The former pump according to claim 1, wherein the vent hole (57) is formed in the vertical wall portion (56a) of the cover wall (56). The former pump according to claim 1, wherein a large number of the vent holes 57 are formed in the cover wall 56 as small holes. The cover wall 56, former pump according to any one of claims 1 to 3 fixed to the stem D ₂ to form the stem D ₂ separately. The cylinder member B is connected to the upper member B ₁ constituting the peripheral wall portion 21 of the air cylinder 20 and the upper member B ₁ in an airtight and detachable manner, and the bottom wall portion 22 of the air cylinder 20 is connected to the liquid member. The lower end B ₂ constituting the peripheral wall portion 31 and the bottom wall portion 32 of the cylinder 30 is configured, and the lower end opening of the air cylinder peripheral wall portion 21 is configured as the cleaning opening h by removing the lower member B ₂ . The former pump according to any one of claims 1 to 4. An inner window 26 is opened at the lower end of the peripheral wall 21 of the air cylinder 20, and a cylindrical closing cylinder 27 that closes the inner window 26 in an airtight manner is rotatably fitted to the outer periphery of the air cylinder 20. 5. The outer window 28 communicating with the inner window 26 by rotation of the inner window 26 is provided in the closed cylinder 27, and the cleaning window h is formed by the inner window 26 and the outer window 28. Former pump. Former pump according spacer F to prevent depression of the ejection head D _4, to either detachably fitted so was of claims 1 to 6 between the discharge head D ₄ and the mounting cap A.

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