JP4318169B2 - pump - Google Patents

Description

  The present invention relates to a pump, and more particularly, to a pump capable of discharging a high-viscosity liquid into a fluffy foam with a full feel.

  There is known a pump that is attached to a container body and ejects the liquid in the container body in a foam shape (see, for example, Patent Document 1).

The pump is provided with a liquid cylinder and an air cylinder concentrically, and for the air moving up and down in the air cylinder from the outer periphery of the stem in which the liquid piston moving up and down in the liquid cylinder protrudes from the outer periphery. A nozzle body for foam ejection is provided at the upper end of the piston body projecting from the piston, and further, a liquid flow path that communicates with the liquid cylinder and the ejection port of the nozzle body, and air that communicates with the air cylinder and the ejection port. A flow path is provided, and by moving the piston body up and down, the liquid in the liquid cylinder and the liquid in the air cylinder are joined together and ejected in a bubble form from the ejection port. At this time, a liquid mixture of air and air is passed through the mesh to form a uniform foam and is ejected from the ejection port. Further, the merging of the liquid and air joins the air flow path from the periphery of the liquid flow path.
Japanese Patent Laid-Open No. 10-156232

  The present invention proposes a pump container that can discharge a high-viscosity liquid whipped with a moderate lightness without using a mesh.

The first means is configured as follows. That is, a fixed suction part A having a liquid cylinder 3 and an air cylinder 4 and an operation jet part B with a discharge port 5 attached to the fixed suction part A so as to be movable up and down are provided. A pump configured to be capable of simultaneously ejecting the liquid in the liquid cylinder and the air in the air cylinder by moving up and down, the liquid passage a extending from the liquid cylinder to the discharge port, and the air cylinder The vent passage b has one end connected and the other end joined to the liquid passage, and the other end portion of the vent passage b is defined in the end-blocked pipe 23 disposed in the liquid passage a. A first through hole group 28 formed by drilling a plurality of through holes at equal intervals in the circumferential direction on the peripheral wall portion of the tube, and spaced apart from the first through hole group in the longitudinal direction and in the circumferential direction The vent passage is provided in a direction intersecting with the flow direction of the liquid passage by providing a communication port p including the second through hole group 29 at the position The merged composed.

The second means is configured as follows. That is, a fixed suction part A having a liquid cylinder 3 and an air cylinder 4 and an operation jet part B with a discharge port 5 attached to the fixed suction part A so as to be movable up and down are provided. A pump configured to be capable of simultaneously ejecting the liquid in the liquid cylinder and the air in the air cylinder by moving up and down, the liquid passage a extending from the liquid cylinder to the discharge port, and the air cylinder The air passage b has one end communicating and the other end joined into the liquid passage, and the other end of the air passage b is defined in a pipe 23 disposed in the liquid passage a. A direction intersecting with the flow direction of the fluid passage a by providing a communication port p composed of a porous body 36 having an open cell structure in which the end face is hermetically closed and the periphery is exposed, and the tube tip opening is closed. And the air passage b is joined.

  The pump of the present invention can discharge a relatively high-viscosity liquid as a light-weight foam containing bubbles of an appropriate size without providing a mesh, and only a part of the structure is changed. Because it can be assembled using an existing pump, there is also a manufacturing advantage.

The other end of the air passage b is defined in an end-surface-closed tube 23 disposed in the central portion of the air passage b, and a first through hole group is provided in the peripheral wall portion of the tube at equal intervals in the circumferential direction. 28 and a second through hole group 29 at a position spaced apart in the longitudinal direction from the first through hole group and provided in the circumferential direction so as to intersect with the flow direction of the liquid passage. in the made joins the air passage, as well as the discharge of a continuous less uniform foam bubbles becomes possible has both the advantage of discharging the higher cell density foam.

  Furthermore, the other end portion of the air passage b is defined in a tube 23 disposed in the liquid passage a, and the open cell is closed with the end face hermetically closed and the periphery is exposed, and the open end of the tube is closed. In the case where the communication port p constituted by the porous body 36 having the structure is provided and the air passage b is joined in the direction intersecting the flow direction of the liquid passage a, the bubble diameter is relatively small. A large number of bubbles can be discharged.

  The pump of the present invention is mounted on the container body 2 and has a fixed suction part A having a liquid cylinder 3 and an air cylinder 4 and an operation jet part B provided so as to be movable up and down with respect to the fixed suction part A. And. Further, by moving the working jet B up and down, the liquid in the container body 2 is discharged from the liquid cylinder 3 through the liquid passage a through the discharge port 5 at the upper end of the working jet B and the outside air is discharged from the liquid cylinder. 3 is joined to the discharge liquid through the air passage b, and the discharge liquid in which air is dispersed is discharged in the form of bubbles.

  In FIG. 1, the fixed suction part A hangs a large-diameter air cylinder 4 having an upper end fixed to a mounting cap 6 fitted to the outer surface of the mouth and neck of the container body 2 in the container body 2. A liquid cylinder 3 having an upper end opened at the center of the bottom of the air cylinder 4 extends downward. A suction pipe 7 having an upper end fitted to the lower end of the liquid cylinder 3 is suspended from the lower end of the container body 2.

  The operation ejection part B is assembled so as to be movable up and down in an upward biased state with respect to the fixed suction part A. By moving up and down, the liquid in the liquid cylinder 3 and the air in the air cylinder 4 are ejected simultaneously. A small-diameter liquid piston 8 slidably fitted to the liquid cylinder 3 is provided on the outer periphery of the lower portion, and a large-diameter slidably fitted to the air cylinder 4. The inner periphery of the air piston 9 is connected to the middle portion in the vertical direction so as to be able to move up and down with a small width, and a stem 10 is provided with an upper end projecting upward from the mounting cap 6. Further, a liquid stop valve 11 unilaterally communicated from the upstream to the downstream is provided in the upper portion of the stem 10, and the pressing head 12 with the discharge port 5 is fitted to the upper end of the stem 10.

  The inner peripheral edge of the air piston 9 is configured as a cylindrical valve portion 9a that is fitted with a small gap up and down with the outer periphery of the stem 10, and a flange having a lower end projecting from the outer periphery of the stem 10 An air discharge valve 14 is formed by pressure-contacting the valve seat 13 in an airtight manner. The air discharge valve 14 is closed when it is pushed up to the uppermost position shown in FIG. 1, and is opened when the operation ejection portion B is pushed down, and further rises from the pushed-down state by an upward biasing force. In some cases, it is configured to close. An outside air intake valve 15 is provided on the stepped wall portion 9b of the air piston 9. Reference numeral 16 denotes a coil spring 16 that urges the working jet B upward.

  The pressing head 12 has a fitting cylinder 17 with a lower part fitted to the upper part of the stem 10 suspended from the back surface of the top plate 18 and double cylindrical inner and outer peripheral walls 19 and 20 from the periphery of the top plate 18 to the outer periphery of the stem 10. The upper end of the cylindrical valve portion 9a at the inner edge of the air piston 9 is fitted to the lower end portion of the inner peripheral wall 19 so as to be airtightly slidable. Further, a horizontal cylinder 21 having an open end is provided on the lower surface of the top plate 18, and a base end portion of the horizontal cylinder 21 is opened in a gap between the fitting cylinder 17 and the inner peripheral wall 19. Further, a separate nozzle 22 base end portion is fitted to the distal end portion of the horizontal cylinder 21 and the discharge port 5 is opened at the distal end thereof. Further, a gap is formed in the periphery of the horizontal cylinder 21, and the base end portion thereof is hermetically fitted to the base end portion of the horizontal cylinder 21, so that the clearance between the fitting cylinder 17 and the inner peripheral wall 19 is communicated with the inside. A tube 23 with a closed end face is fitted, and a communication port p constituted by a plurality of circumferential holes 24 is opened in the peripheral wall portion of the tube 23. In the figure, reference numeral 25 denotes a rib.

  The liquid passage a is formed from the liquid cylinder 3 through the stem 10 and from the fitting cylinder 17 through the horizontal cylinder 21 around the pipe 23 to the discharge port 5 of the nozzle 22. In addition, a gap between the stem 10 and the tubular valve portion 9a, a gap between the stem 10 and the inner peripheral wall 19, a gap between the fitting cylinder 17 and the inner peripheral wall 19, and the lateral side via the air discharge valve 14 from the air cylinder 4 The air passage b is formed through the communication hole 26 formed in the cylinder 21 and joined from the pipe 23 to the liquid passage a through the communication port p.

In the configuration which is a premise of the present invention, the other end of the air passage b is positioned at the center of the liquid passage a, and a communication port p is provided around the other end of the air passage so that the flow direction of the liquid passage a The air passage b is merged in the intersecting direction. As one form thereof, as described above, the communication port p including a plurality of through holes 24 formed at equal intervals in the circumferential direction is opened on the outer periphery of the tube 23. By configuring in this way, the air ejected from the communication port p is sheared by the flowing liquid and is sequentially dispersed in the liquid as a large number of bubbles and discharged from the discharge port 5 in the form of bubbles. In particular, when discharging a liquid having a relatively high viscosity, it is easy to handle and can be discharged in a soft state. Note that the flow direction and the intersecting direction of the liquid passage a are not necessarily limited to the orthogonal direction, and may be an opening direction at a slightly inclined angle. In the figure, reference numeral 27 denotes a known rod-like body whose upper and lower sealing portions block the upper and lower sides when the operation ejection portion B is at its highest position.

  An example of the case of using the pump configured as described above will be described below. The liquid in the container body 2 is introduced into the liquid cylinder 3 by moving the working ejection part B up and down several times in advance from the state of FIG. When the press-down head 12 is pushed down from this state, the liquid piston 8 is lowered to pressurize the liquid cylinder 3, and the liquid in the liquid cylinder 3 opens the liquid stop valve 11 along with the liquid passage a. Further, it is ejected toward the discharge port 5. On the other hand, the inside of the air cylinder 4 is pressurized, and accordingly, the air in the air cylinder 4 is ejected from the open air discharge valve 14 through the ventilation path b so as to join the liquid through the connection port p of the pipe 23. . Then, the liquid in which bubbles formed at the merging portion are dispersed is discharged from the discharge port 5 in the form of bubbles.

  When the pressing of the working jet part B is released, the working jet part B rises by the action of the coil spring 16. At this time, since the inside of the liquid cylinder 3 becomes negative pressure, the liquid stop valve 11 is closed, and the liquid in the container body 2 is sucked into the liquid cylinder 3 through the pipe 7. On the other hand, since the air discharge valve 14 is closed and the pressure in the air cylinder 4 becomes negative, the outside air is sucked into the air cylinder 4 from the outside air intake valve 15.

In FIG. 4, the other end of the air passage b is defined in an end-face-closed tube 23 arranged at the center in the liquid passage a, and a plurality of through holes are formed at equal intervals in the circumferential direction on the peripheral wall of the tube. The first through hole group 28 and the second through hole group 29 that are spaced apart from the first through hole group 28 in the longitudinal direction and are displaced from the first through hole group 28 in the circumferential direction. The example which comprised p is shown. For example, the first through-hole group 28 and the second through-hole group 29 ahead thereof have the same center angle between the respective through-holes 24 and are present at positions shifted from each other. By configuring in this way, it is possible to prevent the bubbles from adhering to form large bubbles or to form a non-uniform foam that is mixed in large and small, and to have a dispersed structure with a high foam density.

  In the illustrated example, the tube 23 is opened at the tip, and the first and second tip members 30 and 31 for forming the communication port are fitted and fixed to the tip. The first tip member 30 includes a fixed cylinder 32 that is fitted and fixed to the inner periphery of the distal end of the tube 23 with a plurality of ribs 25 provided around the circumference in the longitudinal direction. 23 A flange 33 is formed in which a front end surface and a rear surface are in airtight contact with each other and a plurality of grooves are radially formed at intervals in the circumferential direction. Further, a connecting cylindrical portion 34 is extended forward from the periphery of the flange. . And the 1st through-hole group 28 is formed by the through-hole which each forms with the said several groove and the pipe | tube 23 front end surface. Further, the second tip member 31 extends the same flange 33 from the tip of the connecting rod portion 35 fitted in the connecting cylinder portion 34 with a gap through which the liquid can be passed by the same rib 25. Has been established. The concave grooves of the flange 33 are provided so as to be shifted to the center position in front view between the concave grooves 1 of the first tip member 30.

5 and 6 show that the other end of the air passage b is defined in the tube 23 disposed in the central portion of the liquid passage a, and the end face of the tube 23 is closed in an airtight manner and the periphery is exposed. An example in which the communication port p is constituted by a porous body 36 having an open cell structure in which the opening is closed is shown. In the illustrated example, the end of the tube 23 is opened, and the large-diameter portion 36b whose rear surface is in close contact with the distal end portion of the tube 23 is extended to the distal end of the small-diameter portion 36a that is closely fitted and fixed inside the distal end portion. A porous body 36 is provided, and a sealing material 37 is fixed to the end face of the porous body 36. As the porous body 36, various materials such as a synthetic resin foam, felt, and sintered body can be used. Further, the sealing material can also be formed of a synthetic resin or the like, and can be fixed by appropriate fixing means such as adhesion and fusion.

It is a half sectional view of a pump of a reference example. ( Reference Example 1) It is a principal part expanded sectional view of a reference example . (Reference Example 1) It is a principal part expanded sectional view of a reference example . ( Reference Example 1) It is a principal part expanded sectional view of this invention pump . Example 1 It is a principal part expanded sectional view of this invention pump. (Example 2) It is a principal part expanded sectional view of the Example. (Example 2)

2 ... Cylinder for liquid, 3 ... Cylinder for air, 4 ... Discharge port, 23 ... Pipe, 24 ... Through hole,
28 ... 1st through-hole group, 29 ... 2nd through-hole group, 36 ... Porous body, A ... Fixed suction part,
B ... Working jet part, a ... Liquid passage, b ... Ventilation path, p ... Contact port

Claims (2)

A fixed suction part A provided with a liquid cylinder 3 and an air cylinder 4; and an operation jet part B with a discharge port 5 mounted on the fixed suction part A so as to be movable up and down. The pump is configured to be capable of simultaneously ejecting the liquid in the liquid cylinder and the air in the air cylinder, one end of the fluid passage a extending from the liquid cylinder to the discharge port and the air cylinder. The vent path b is connected to the other end into the liquid passage, and the other end of the vent path b is defined in the end-blocked pipe 23 disposed in the liquid passage a. A first through hole group formed by drilling a plurality of through holes at equal circumferential intervals in the peripheral wall portion of the tube, and at a position spaced apart from the first through hole group in the longitudinal direction and shifted in the circumferential direction. A communication port p consisting of the second through hole group 29 is provided, and the air passage is merged in a direction intersecting the flow direction of the liquid passage Pump characterized by comprising Te. A fixed suction part A provided with a liquid cylinder 3 and an air cylinder 4; and an operation jet part B with a discharge port 5 mounted on the fixed suction part A so as to be movable up and down. The pump is configured to be capable of simultaneously ejecting the liquid in the liquid cylinder and the air in the air cylinder, one end of the fluid passage a extending from the liquid cylinder to the discharge port and the air cylinder. The air passage b is connected to the other end of the fluid passage, and the other end of the air passage b is defined in a pipe 23 disposed in the fluid passage a. A communication port p constituted by a porous body 36 having an open cell structure in which the tube tip opening is closed in a state of being airtightly closed and the periphery is exposed, is provided in the direction crossing the flow direction of the liquid passage a. A pump characterized by joining the air passage b.

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