JP5971759B2 - Former pump - Google Patents

Description

  The present invention relates to a former pump.

  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 mesh, and ejected in the form of bubbles from the ejection port. It is composed.

JP2009-202122A

  The former pump disclosed in Patent Document 1 foams when the gas-liquid mixture passes through the foamed mesh. Finer foam can be obtained to some extent by making the foamed mesh finer. There is also a problem that the resistance when passing through the foam mesh increases as the mesh of the foam mesh becomes finer. Therefore, it is advantageous if the foam quality can be improved by methods other than making the mesh of the foam mesh fine.

  An object of the present invention is to provide a former pump capable of supplying high-quality foam by efficiently mixing a mixture of gas and liquid on the upstream side of the foaming portion.

The first means is
A mounting cap A fitted to the outer periphery of the mouth and neck of the container body 100;
A cylinder member B formed by concentrically connecting a large-diameter air cylinder 20 and a small-diameter liquid cylinder 30 vertically, while the upper end portion is fixed to the mounting cap A and suspended in the container body 100;
The liquid piston D1 that slides in the liquid cylinder 30 protrudes from the bottom of the stem D2, and the air piston D3 that slides in the air cylinder 20 is linked to the upper periphery of the stem D2, and the discharge port is at the top of the stem. An operating member D fitted with a discharge head D4 with 74 and mounted so as to be movable up and down in an upwardly biased state;
A discharge valve 42 is formed in the middle of the main flow path PM from the liquid cylinder 30 through the stem D2 to the discharge port 74, and an air flow path PA continuous with the air cylinder 20 is provided downstream of the discharge valve 42. And a foaming portion 78 is provided downstream of the joining point Q, and the fluid in the fluid cylinder 30 and the air in the air cylinder 20 are joined by the vertical movement of the operating member D to cause foaming. A former pump that discharges as foam from the discharge port 74,
A core part 51 having a vertical circumferential surface is supported on a vertical main flow path part between the confluence Q and the foaming part 78, and the upstream side and the downstream side of the core part 51 are provided around the core part 51. And forming an annular channel portion PR having a smaller channel area than
Mixing to mix gas and liquid by making the circumferential surface of the annular flow path portion PR into a rough surface in which the groove 48a intersecting the same direction with respect to the vertical direction repeatedly appears across the protrusion 48b. Mechanism 48 is built ,
The concave groove 48a is formed in a spiral groove.

In this means, as shown in FIG. 1, to form an annular flow path portion P _R is constriction downstream of the point Q of the main flow channel P _M and the air flow passage P _A of the former pump, the annular the peripheral surface of the flow path portion P _R, form a mixing mechanism 48 that has a concave groove 48a and the ridges 48b. Thereby, a liquid and air can be mixed and foam quality can be improved.

In this means, the groove 48a is formed in the spiral groove shown in FIG. The air mass can be made finer by the swirling action when the liquid and air pass through the spiral groove.

According to the first aspect of the invention, the annular channel portion PR is provided around the core portion 51 supported on the downstream side of the junction of the main channel PM and the air channel PA. Since the gas and liquid mixing mechanism 48 is formed on the peripheral surface, fine bubbles can be generated.
According to the invention relating to the first means, since the groove 48a is formed in the spiral groove, the mixing action of the liquid and air is enhanced by the turning action when passing through the spiral groove.

It is sectional drawing of the former pump which concerns on 1st Embodiment of this invention. It is an enlarged view of the principal part of the former pump of FIG. FIG. 3 is an operation explanatory diagram of a main part of FIG.

  1 to 3 show a former pump 1 according to a first embodiment of the present invention. For convenience of explanation, the former pump structure is divided into basic items and characteristic items, and first explained from the former.

  The former pump 1 of the present embodiment 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. Each of these members can be formed of a synthetic resin material unless otherwise specified.

  The mounting cap A is for fixing the former pump 1 to the container body 100, and has a peripheral wall 10 fitted to the outer periphery of the mouth and neck of the container body 100 indicated by an imaginary line in FIG. From the upper end edge, a top wall 11 having a window hole through which the operating member D passes is extended in the center, 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 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. 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 connected to the inner peripheral edge of the bottom wall portion 22 of the air cylinder 20 with the upper edge of the peripheral wall portion 31 hanging downward, and has a tapered bottom opening at the center from the lower end edge of the peripheral wall portion 31. The wall 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 39 projecting outward from the outer periphery of the lower end of the fitting cylinder portion 37 fitted in the lower portion of the stem D ₂ , and the sliding portion 39 is formed as a liquid cylinder. 30 is fitted to the inner circumference so that it can slide liquid-tightly. The upper end portion of the fitting tubular portion 37 forms a valve seat 38 of the check valve ridges form at the vertical direction intermediate portion of the stem D _2. Then, the coil spring S is interposed to bias the actuating member D upward at all times between the upward stepped portion of the fitting tubular portion 37 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 is assembled so that the liquid piston D ₁ that slides on the liquid cylinder 30 protrudes to the outer periphery of the lower portion, and slides in the air cylinder 20. by linking the air piston D ₃ on the outer circumferential upper is mounted the liquid cylinder 30 and air cylinder 20 vertically movably. In the stem D ₂ upper, it forms a valve seat 40 for the discharge valve and forms a discharge valve 42 with the ball-shaped valve body 41. The valve seat 40 is formed with a first flange-like wall portion 40a of the inwardly projecting from the inner wall of the stem D _2, a short cylindrical portion 40b erected from the inner periphery of the first flange-like wall portion 40a, the The upper surface of the short cylinder portion 40b is inclined inward and downward to form a valve seat surface. Further, a plurality of first vertical protrusions 43 in the circumferential direction project from the lower surface of the valve seat 40 for the discharge valve to directly above the valve seat 38 for the check valve. Further, a valve seat 44 for an air discharge valve projecting in a flange shape is projected on the upper surface of the outer surface, and a plurality of second vertical projections 45 in the circumferential direction are projected on the outer periphery of the cylinder wall above it. Yes.

The air piston D ₃ has a cylindrical valve portion 65 on the inner periphery 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 through a stepped wall portion 66 extending from the outer periphery of the cylindrical valve portion 65. Thus, an upper and lower skirt-like sliding portion 67 fitted to the inner periphery of the air cylinder 20 so as to be liquid-tightly slidable is extended. Cylindrical valve portion 65 is movable vertically fitted to the second vertical ridge 45 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 vertical tube 70 which is provided around the annular recess 75, the tubular valve portion 65 thereof an annular recess A space between the top surface of 75 and the valve seat 44 for the air discharge valve is mounted so as to be movable up and down, and an air discharge valve 68 is constituted by the valve seat 44 for the air discharge valve. The air discharge valve 68 is closed when the actuating member D shown in FIG. 1 is pushed up to the uppermost position, and is opened when the actuating member D is pushed down. It is configured to close when it rises due to power. Further, the stepped wall portion 66 of the air piston D ₃ is provided outside air introducing valve 69 for introducing outside air. The outside air introduction valve 69 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 is a vertical tube 70 which is fitted on the outer peripheral upper end portion of the stem D ₂ and vertically from top plate 71 back surface, and vertically the outer vertical wall portion 72 from the top plate 71 periphery, The vertical An inner vertical wall 73 is suspended between the cylinder 70 and the outer vertical wall 72, and the base end is opened at the upper end of the vertical cylinder 70 so that the inner vertical wall 73 and the outer vertical wall 72 are opened. A nozzle projecting forward through the nozzle is extended, and a discharge port 74 is opened at the tip. The main flow channel P _M at the inside of the these stem D ₂ and the longitudinal cylinder 70 nozzles are formed. A cylindrical member 76 is fitted into the vertical cylinder portion above the discharge valve 42 so as to be separated from the discharge valve, and a gas-liquid mixing chamber R is formed below the cylindrical member 76. . Further, the inner peripheral lower end of the vertical tube 70 is recessed annular recess 75, passes between the stem D ₂ and the vertical tube 70 from the annular recess 75, between the discharge valve 42 and the tubular member 76 It is provided an air flow passage P _a which communicates with the main passage portion.

  A foaming portion 78 is provided downstream of the gas-liquid mixing chamber R. The foaming portion 78 in this case is configured by preparing a pair of cylindrical bodies 78b with meshes 78a stretched and fitting them into the cylindrical member 76 so that the meshes 78a are at the upper and lower ends. This will be described later.

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. The valve body 82 and the check valve seat 38 form a check valve 83. A plurality of circumferential grooves 84 are vertically provided on the outer periphery of the large diameter portion, and a plurality of third vertical protrusions 85 are provided on the outer periphery of the small diameter portion.

The spacer F has an arcuate plate-like fitting portion 90 that is detachably fitted to the outer periphery of the guide cylinder 12, and a plate-like knob portion is provided to project 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.

When the spacer F is removed from the state of FIG. 1 and the discharge head D ₄ is pushed down, the air piston rises relative to the stem D ₂ and the air discharge valve 68 opens, and the air piston D ₃ descends to air air use cylinder 20 is introduced into pressurized gas-liquid mixing chamber R through the air passage P _a. The causes downward until it abuts against the valve seat 33 for the suction valve poppet E liquid cylinder 30 is lowered, relatively elevated check valve poppet E is relative to the stem D ₂ 83 opens, and the pressurized liquid in the liquid cylinder 30 is introduced into the gas-liquid mixing chamber via the discharge valve 42 and mixed with the gas. At this time the poppet valve body E is relatively raised with respect to the stem D ₂ slides the check valve body 82 is in the first vertical ridge 43 inner surface of the stem D _2. The gas / liquid mixed in the gas / liquid mixing chamber foams through the foaming portion 78 and is discharged from the discharge port 74 as bubbles.

When releasing the pressure of the discharge head D _4, actuating member D by the urging force of the coil spring S is increased, whereby the air piston D ₃ is then lowered relative stem D ₂ closes the air discharge valve 68 Due to the negative pressure in the air cylinder 20, the outside air introduction valve 69 is opened and the outside air is introduced into the air cylinder 20. The poppet valve body E by increasing the stem D ₂ rises with a check valve body 82 friction force of the first longitudinal ridges 43, 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 42 is closed. The poppet valve body E rises until the locking projection 80 abuts against the lower surface of the coil spring S, and thereafter, relative to the stem D ₂ until the check valve body 82 abuts the valve seat 38. Descend.

  The present invention is characterized in that the valve pressing member 50 and the mixing mechanism 48 are provided between the discharge valve 42 and the foaming portion 78. In the preferred illustrated example, the second flange-shaped wall 47 projects inwardly from the inner peripheral surface of the cylindrical portion 76 at a distance from the upper and lower ends of the cylindrical wall. A valve pressing member 50 is disposed in the gas-liquid mixing chamber R between the portion 47 and the first flange-like wall portion 40a. Further, a foaming portion 78 is fitted into the cylindrical member portion above the second flange-like wall portion 47.

The valve pressing member 50 is a member for pressing the pop-out of the ball-shaped valve body 41, as shown in FIG. 2, has a core portion 51 which is supported on the stem D _2, the core portion 51 in conjunction with pressing the protrusion of the upper of the ball-shaped valve body 41, it is configured to form an annular flow path portion P _R between the outer surface and the inner peripheral surface of the stem D ₂ of the core portion 51. In the illustrated example of the valve pressing member 50, the support cylinder portion 52 is suspended from the lower peripheral surface of the core portion 51. However, the core portion 51 may be supported in any manner, and for example, it may be formed integrally with the stem via a plurality of radial support pieces.

The core portion 51 is a slightly smaller diameter than the inner diameter of the stem D _2, is located in the center of the main channel of the stem D ₂ is formed. The core portion 51 of the present embodiment is a cylindrical body having a vertical outer peripheral surface, and the cylindrical hole is closed with a horizontal plate portion (a bottom plate portion in the illustrated example). However, the structure of the core portion 51 can be changed as appropriate.

The supporting cylinder unit 52 has a larger inner diameter than the ball-shaped valve body 41, and is篏合the stem D ₂ is brought into contact with the lower end to the first flange-like wall portion 40a. In the illustrated example, the lower half of the support cylinder 52 is formed to have a slightly larger outer diameter, and an appropriate number (from the inside of the support cylinder 52 to the outside of the core 51 is communicated with the upper half of the support cylinder 52 ( The two first orifices O ₁ are opened in the illustrated example.

The main channel portion inner peripheral surface of the vicinity of the core portion 51 has a second orifice O ₂ (at least two in the illustrated example) appropriate number communicating with the lower side of the annular flow path portion P _R, The liquid and the gas are merged at a confluence point Q inside the second orifice O ₂ . In the preferred example shown, substantially with the same diameter as the lower end of the stem D ₂ of the cylindrical wall upper end and the tubular member 76, a notch for the orifice formed on at least one of the opposing surfaces of each end, and it is second to form an orifice O ₂ by butting the facing surfaces of the end portions. The second orifice O ₂ (in the illustrated example the first upper orifice O ₁₎ positioned proximate the first orifice O ₁ preferably be provided.

The second orifice O ₂ of the cylindrical wall of the tubular member 76 and the inner circumferential surface of a portion between the second flange-shaped wall portion 47, concave groove 48a with respect to the vertical direction of the convex portion 48b It is a rough surface that repeatedly appears in between. The groove 48a and the protrusion 48b constitute a gas-liquid mixing mechanism 48. The tip end of the ridge 48b is slightly separated from the outer peripheral surface of the core 51. The groove 48a in the illustrated example is formed in one spiral groove.

In the above construction, when depressing the ejection head D _4, as described above, as indicated by the white arrows in FIG. 3, pressurized liquid passes through the first orifice O ₁ pushes up the ball-shaped discharge valve body 41, merge at point Q and the air (indicated by thin arrows in the drawing) passing through the second orifice O ₂ through the air passage P _a, the annular flow path portion P _R as fluid and air and liquid are mixed enter.

Annular flow path portion P _R is the provision of the concave groove 48a and the ridges 48b on the flow channel area than the main passage portion of the front and rear has become a small constriction, further annular flow passage portion P _R The path of the fluid is further narrowed. When passing through this constriction, the air in the fluid becomes fine particles and mixes with the liquid.

  In this embodiment, since the groove 48a is formed in a spiral groove, most of the fluid undergoes a swirling action when passing through the spiral groove and is further stirred. This improves the degree of mixing of air and liquid. Since the fluid in which air and liquid are finely mixed enters the foaming portion 78, the foamed foam is thereby extremely fine.

Concave groove 48a of the mixing mechanism 48, in the preferred illustrated embodiment, are formed by forming a spiral groove, the scope of the present invention is not limited thereto, for example, the annular flow path portion P _R Even if a plurality of annular grooves 48a and protrusions 48b are alternately formed on the peripheral surface in the vertical direction, the effect of mixing gas and liquid is exhibited. Although forming a concave groove and a convex portion (the inner peripheral surface of the cylindrical member) circumference of the outer annular flow path portion P _R in the illustrated example, the peripheral surface of the inner annular flow path portion P _R Even if the groove and the ridge are formed on the outer peripheral surface of the core, the effect of mixing the gas and the liquid is exhibited.

1… Former pump A… Installation cap
10 ... peripheral wall 11 ... top wall 12 ... guide cylinder 13 ... locking cylinder B ... cylinder member
20 ... Air cylinder 21 ... Surrounding wall 22 ... Bottom wall 23 ... Engagement cylinder
30 ... Cylinder for liquid 31 ... Surrounding wall 32 ... Bottom wall
33 ... Suction valve seat 34 ... Pipe fitting cylinder 35 ... Locking rib C ... Pipe D ... Actuating member
D ₁ … Liquid piston
37 ... Fitting cylinder 38 ... Check valve seat 39 ... Sliding part
D ₂ ... Stem 40 ... Valve seat for discharge valve 40a ... First flange-like wall part 40b ... Short cylinder part
41 ... Ball-shaped valve element 42 ... Discharge valve 43 ... First vertical ridge
44 ... Valve seat for air discharge valve 45 ... Second vertical ridge
47 ... Second flange-shaped wall 48 ... Mixing mechanism 48a ... Concave groove 48b ... Convex part
50 ... Valve holding member 51 ... Core 52 ... Supporting cylinder
D ₃ ... Piston for air
65 ... Cylindrical valve part 66 ... Stepped wall part 67 ... Sliding part 68 ... Air discharge valve,
69… Outside air introduction valve
D ₄ … Discharge head
70 ... Vertical cylinder 71 ... Top plate 72 ... Outer hanging wall 73 ... Inner hanging wall 74 ... Discharge port 75 ... Annular recess
76 ... Cylindrical member 78 ... Foaming part 78a ... Mesh 78b ... Cylindrical body E ... Poppet valve body
80 ... Locking projection 81 ... Suction valve 82 ... Check valve body 83 ... Check valve 84 ... Ditch
85 ... Third vertical ridge
F ... Spacer 90 ... Fitting part
100: container body O ₁ ... first orifice O ₂ ... second orifice
P A _... air passage P M _... main passage P R _... annular flow path section Q ... confluence
R ... Gas-liquid mixing chamber S ... Coil spring

Claims (1)

A mounting cap (A) fitted to the outer periphery of the mouth and neck of the container body (100);
The upper end of the mounting cap (A) is fixed and suspended in the container body (100), and a large-diameter air cylinder (20) and a small-diameter liquid cylinder (30) are concentrically connected vertically. A cylinder member (B),
The liquid piston (D1) that slides in the liquid cylinder (30) protrudes from the bottom of the stem (D2), and the air piston (D3) that slides in the air cylinder (20) And a working member (D) that is linked to the upper periphery of the outer periphery and is fitted with a discharge head (D4) having a discharge port (74) at the upper end of the stem so as to be movable up and down in an upward biased state.
A discharge valve (42) is formed in the middle of the main flow path (PM) from the inside of the liquid cylinder (30) via the stem (D2) to the discharge port (74), at the downstream of the discharge valve (42). The air flow path (PA) continuous with the air cylinder (20) is joined, and a foaming part (78) is provided downstream of the joining point (Q), and the liquid is moved by the vertical movement of the operating member (D). A former pump that causes the liquid in the cylinder (30) and the air in the air cylinder (20) to merge and foam, and discharges as foam from the discharge port (74),
A core part (51) having a vertical peripheral surface is supported on a vertical main flow path part between the confluence (Q) and the foaming part (78), and a core is provided around the core part (51). Forming an annular channel portion (PR) having a smaller channel area than the upstream side and the downstream side of the part (51),
By making the circumferential surface of the annular flow path portion (PR) a rough surface where the groove groove (48a) intersecting the same direction with respect to the vertical direction repeatedly appears across the protrusion (48b), And a mixing mechanism (48) for mixing liquids .
A former pump , wherein the concave groove (48a) is formed in a spiral groove .