JP2012115748A - Pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pump constituted so as to suck the liquid in a container body by the up and down movement of a movable ejection part B to eject the same from a nozzle 83, capable of being locked with a fixed suction part A in a state that the movable ejection part B is pushed down and having no leak fear of the liquid not only in a case that the container body is allowed to fall but also in a case that the body part of the container body is strongly squeezed.SOLUTION: In the lowermost falling locked state of the movable ejection part B, a seal part for cutting off the up and down movement in a cylinder A1 by the movable ejection part B and the fixed suction part A. Further, the closing cylinder member B4 mounted on the outer periphery of a stem B1 in an up and down movable manner closes an open air introducing hole 18 and, when the movable ejection part B is present at the uppermost rising position and moved up and down in order to eject the liquid, the seal part is opened and the open air introducing hole 18 is opened.

Description

  The present invention relates to a pump.

  Various pumps have been proposed in which the stored liquid is ejected from the ejection port of the ejection head by moving the ejection head at the upper end up and down. (For example, see Patent Document 1)

  The pump described in Patent Document 1 has an outside air introduction hole at the top of the peripheral wall, and a cylinder having a suction valve at the bottom, with its upper end protruding beyond the neck and neck and the lower end hanging down into the body The fixed suction part that is fixed to the container body in this state and the annular piston that slides in the cylinder are linked to the lower bottom of the bottomed stem so that it can move up and down relatively, and the ejection head is fitted to the upper end of the stem A movable jetting part that is attached and movable upward and downward in an upwardly biased state, and sucks up the liquid in the container by the vertical movement of the movable jetting part and ejects it from the nozzle, while the movable jetting part is pushed down. It can be locked to the fixed suction part.

  The suction valve in the pump uses a ball-shaped valve body, and the discharge valve formed by the annular piston is also open in the state where the movable ejection part is pushed down and locked. There was a risk that the liquid could leak due to communication with the outside. Also, the outside air introduction hole of the cylinder is open when the movable ejection part is pushed down and locked, and the inside of the container is in communication with the outside via the outside air introduction hole. There was also a risk of liquid leakage.

  Considering these points, the valve plate is elastically pressed against the valve seat, the valve plate is forcibly opened against the elastic blocking force in the negative pressure state in the cylinder, the suction valve opens, and the negative pressure By adopting a suction valve in which the valve plate closes with an elastic closing force when the state disappears, there is no leakage of liquid from this part even if the container is tilted, and therefore, leakage of liquid from the nozzle can be prevented Has also been proposed.

JP 2005-313957 A

  However, even when a suction valve is used in which the valve plate is elastically pressed against the valve seat, the container body is pressurized when the container body is gripped with a strong force, and the suction valve is opened by the hydraulic pressure to open the nozzle. There is a risk that the liquid leaks from the liquid, and this is particularly noticeable in an unopened state in which the container is filled with the liquid. In this case, the problem of leakage of liquid from the outside air introduction hole of the cylinder is not solved.

  The present invention has been made in view of the above points, and when the movable ejection portion is in the lowest lowered locking state, there is no risk of liquid leakage even when the container body is tilted, and the container body portion is strongly squeezed. In this case, the present invention proposes a pump that is free from the risk of liquid leakage.

  The first means is configured as follows. That is, the outside air introduction hole 18 is formed in the upper part of the peripheral wall 11, the cylinder A1 provided with the suction valve 45 in the bottom part, the upper end part protrudes from the mouth neck part 103, and the lower end part is suspended in the trunk part 101. The fixed suction part A fixed to the container body 100 in the state and the annular piston B2 sliding on the cylinder A1 are linked to the bottom lower part of the stem B1 so as to be able to move up and down relatively, and the ejection head is connected to the upper end of the stem B1. And a movable jetting part B that is fitted with B3 and is movable up and down in an upward biased state. The vertical movement of the movable jetting part B sucks up the liquid in the container body and ejects it from the nozzle 83. In the liquid jet pump configured to be able to be locked to the fixed suction portion A in a state where the jet portion B is pushed down, the movable jet portion B, the fixed suction portion A, To form a seal that blocks the top and bottom of cylinder A1 and the outer periphery of stem B1 The closed cylinder member B4 mounted so as to be movable up and down closes the outside air introduction hole 18, and the seal portion is opened when the movable ejection portion B is at the highest position and when the movable ejection portion B moves up and down for liquid ejection. In addition, the outside air introduction hole 18 is configured to be opened.

  The second means is configured as follows. That is, in the first means, the seal portion is a close fitting portion between the seal cylinder 55 suspended from the lower outer periphery of the movable ejection portion B and the inner surface of the peripheral wall portion formed in a small diameter at the lower end of the cylinder A1. Configured.

  The third means was configured as follows. That is, in the first means, a seal cylinder 48 in which the outer periphery of the flange 47 extending outward from the lower end is closely fitted to the inner periphery of the cylinder A1, and the outer periphery of the lower end of the stem B1. It consisted of a close fitting part.

  The fourth means is configured as follows. That is, in the third means, the seal cylinder 48 is fitted to the lower end of the inner periphery of the cylinder A1, and is integrally formed on the fitting cylinder 40 that supports the suction valve plate 42 via the elastic connecting piece 41. And formed as a suction valve member A4 as a whole.

  The fifth means is configured as follows. That is, in any one of the first to fourth means, the closing cylinder member B4 protrudes from the upper end opening of the fixed suction part A and has a gap for introducing outside air inside. The base cylinder part 90 is fitted to the lower part of the outer periphery of the stem B1 so as to be movable up and down, and protrudes from the lower part of the outer periphery of the base cylinder part 90, and is fitted to the upper part of the inner periphery of the cylinder A1 so as to be vertically slidable. The closed cylindrical member B4 is pushed down by a downward step provided on the upper part of the movable ejecting part B when the movable ejecting part B shifts to the lowermost locking state, and the outside air introduction hole is formed. 18 and the movable ejection part B are pushed up by an upward step provided at the lower outer periphery of the stem B1 and moved to the open state of the outside air introduction hole 18 when the movable ejection part B moves to the highest position.

  According to the present invention, in the locked state of the movable ejection part B, there is no risk of liquid leakage even when the container body 100 is tilted, and there is a risk of liquid leakage even when the container body 101 is strongly squeezed. There is no. In addition, when the movable ejection part B is at the highest position or when the movable ejection part B moves up and down for liquid ejection, the seal part is opened and the outside air introduction hole 18 is opened to enable smooth liquid ejection. It becomes.

  In the case where the seal portion is constituted by a close fitting portion between a seal cylinder 55 suspended from the lower outer periphery of the movable ejection portion B and a peripheral wall portion inner surface formed in a small diameter at the lower end portion of the cylinder A1, In addition to exerting the above effects, the structure of the seal cylinder 55 is simple and easy to manufacture, and since the cylinder A1 of the close fitting portion is formed with a small diameter, there is an advantage that the seal cylinder 55 can be engaged and disengaged more smoothly. .

  When the seal portion is configured by a tightly fitting portion between the outer periphery of the flange 47 extending outward from the lower end portion and the outer periphery of the cylinder B1 and the outer periphery of the lower end portion of the stem B1, Similarly, the above-described effects are exhibited, and the formation of the seal portion has an advantage that the seal portion can be formed only by adding the seal cylinder 48 without changing other portions.

  The seal cylinder 48 is fitted to the lower end portion of the inner periphery of the cylinder A1, and is integrally formed on the fitting cylinder 40 that supports the suction valve plate 42 via the elastic connecting piece 41, and the suction valve member A4 as a whole. In the same way, the above-described effects can be exhibited, and there is an advantage that the assembly process can be reduced.

  The closing cylinder member B4 has a base cylinder part 90 that protrudes from the upper end opening of the fixed suction part A and has a gap for introducing outside air inside, and is fitted to the lower part of the outer periphery of the stem B1 so as to be movable up and down. And an annular sliding closing portion 91 that protrudes from the outer peripheral lower portion of the base cylinder portion 90 and is slidably fitted to the inner peripheral upper portion of the cylinder A1 so that the movable ejection portion B is at the lowest position. When shifting to the state, the closed cylindrical member B4 is pushed down by the downward step provided on the upper part of the movable ejection part B to shift to the closed state of the outside air introduction hole 18, and when the movable ejection part B shifts to the highest position In the case where the outside air introduction hole 18 is shifted to the open state by being pushed up by the upward step portion provided on the outer periphery of the stem B1, the downward step portion and the upward step are provided even if there is a sufficient gap for introducing the outside air. The closed cylindrical member B4 can be reliably moved by the portion.

It is a half sectional view of a pump in which a movable jet part is in the lowest locking state. Example 1 It is a half sectional view of a pump with a movable ejection part in the highest position. Example 1 It is a principal part expanded sectional view of a suction valve part. Example 1 It is a half sectional view of a pump in which a movable jet part is in the lowest locking state. (Example 2) It is a half sectional view of a pump with a movable ejection part in the highest position. (Example 2)

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

  1 and 2 show an example of a pump 1 mounted on a container body 100. The container body 100 is erected from the trunk portion 101 through the shoulder portion 102 through the mouth and neck portion 103. FIG.

  The pump 1 includes a fixed suction part A and a movable ejection part B.

  The fixed suction portion A includes a cylinder A1, a ring cap A2, a mounting cap A3, and a suction valve member A4.

  The cylinder A1 has a bottomed cylindrical shape with an upper end opening with the peripheral wall 11 rising from the peripheral edge of the bottom wall 10, and the suction valve seat 12 is raised above the peripheral edge of the through hole formed in the center of the bottom wall 10. A pipe fitting cylinder 13 is provided below the periphery of the through hole. The peripheral wall 11 has a first tapered wall 11a, a second peripheral wall 11b, a third peripheral wall 11c, and a fourth peripheral wall 11d that are sequentially enlarged in diameter from the lower end, and a first taper portion is formed between the first peripheral wall 11a and the second peripheral wall 11b. 14, the second taper portion 15 connects the second peripheral wall 11b and the third peripheral wall 11c, and the flange portion 16 connects the third peripheral wall 11c and the fourth peripheral wall 11d. Further, a flange 17 is provided on the outer periphery of the third peripheral wall 11c, which is the upper outer periphery of the peripheral wall 11, and an outside air introduction hole 18 is provided in the upper portion of the second peripheral wall 11b. The upper end of the pipe 19 is fitted into the pipe fitting cylinder 13 and the lower end is suspended from the inner bottom of the container body 100.

  The ring cap A2 is fitted to the fourth peripheral wall 11d portion which is the upper end of the cylinder A1, and the inner fitting cylinder 20 is fitted to the inner periphery of the fourth peripheral wall 11d while preventing mutual rotation. An outer fitting cylinder 21 that is fitted to the outer periphery of the fourth peripheral wall 11d while preventing upward slipping is suspended from the back surface of the ring-shaped top plate 22, and a peripheral wall 23 is suspended from the outer periphery of the top plate 22. A flange portion 24 extending outward from the lower end portion of the peripheral wall 23 is extended.

  The mounting cap A3 has a flange-like top plate 30 mounted between the ring cap A2 and the flange 17 so as to be freely rotatable. The mounting cap A3 is attached to the outer periphery of the mouth and neck portion 103 of the container body 100 from the periphery of the top plate 30. A screw cylinder 31 to be screwed is suspended.

  As shown in the enlarged view of FIG. 3, the suction valve member A4 is centered via a plurality of elastic connecting pieces 41 at equal intervals in the circumferential direction from the inner circumference of the fitting cylinder 40 fitted to the lower end portion of the inner circumference of the cylinder A1. The suction valve plate 42 is supported, and the suction valve plate 42 is elastically pressed onto the suction valve seat 12, and the suction valve seat 12 and the suction valve plate 42 form a suction valve 45. In addition, a cross plate 44 having a cross-shaped cross section is erected on a square arch-shaped support plate 43 spanned on the fitting cylinder 40. Each elastic connecting piece 41 of this example extends from the fitting cylinder 40 in the rear circumferential direction toward the center direction, extends again in the center direction, and is connected to the edge of the suction valve plate 42. ing.

  The movable ejection part B includes a stem B1, an annular piston B2, an ejection head B3, and a closed cylinder member B4.

  The stem B1 is composed of two members, a lower member B1a and an upper member B1b. The lower member B1a stands from the periphery of the bottom wall 50 with a lower cylindrical wall 52 constituting the cylindrical wall 51 of the stem B1. A through hole 53 is formed in the lower portion of the lower cylindrical wall 52. Further, a flange-like discharge valve seat 54 projects outwardly from the lower end of the outer periphery of the lower cylindrical wall 52, and a seal cylinder 55 is suspended downward from the outer peripheral edge of the discharge valve seat 54. Further, the lower surface of the discharge valve seat 54 is used as a locking surface of the coil spring s. A plurality of space ribs 56 in the circumferential direction protrude from the upper surface of the seal cylinder 55.

  As shown in FIG. 1, the seal cylinder 55 is tightly fitted to the upper end of the inner periphery of the first peripheral wall 11a of the cylinder A1 with the movable ejection portion B in the lowest lowered locking state, thereby vertically blocking the inside of the cylinder A1. Further, when the movable ejection part B is at the highest position as shown in FIG. 2 or not shown in the drawing, the movable ejection part B is at a position that moves up and down for liquid ejection. The inner surface of the first peripheral wall 11a and the seal cylinder 55 are separated from each other, and communication between the upper and lower sides in the cylinder A1 via the outside of the seal cylinder 55 is possible.

  The upper member B1b has an upper first cylindrical wall 60, an upper second cylindrical wall 61, and an upper third cylindrical wall 62 that are successively reduced in diameter from the lower end, so that the upper first cylindrical wall 60 and the upper second cylindrical wall 61 are reduced. The upper second cylindrical wall 61 and the upper third cylindrical wall 62 are connected by a flange wall 64, respectively. Then, the lower part of the upper second cylindrical wall 61 is fitted and fixed to the upper part of the lower cylindrical wall 52 so as to integrate both, and the upper first cylindrical wall 60 is spaced outward from the lower cylindrical wall 52, and The lower end is suspended from the discharge valve seat 54 with a gap.

  The annular piston B2 is an annular body having an H-shaped cross section in which an outer upper sliding portion 70 and an outer lower sliding portion 71, an inner upper sliding portion 72, and an inner lower discharge valve body 73 are connected by a connecting plate 74. The outer upper sliding portion 70 and the outer lower sliding portion 71 are slidably fitted on the inner surface of the cylinder A1, and the inner upper sliding portion 72 is slidably fitted on the inner surface of the upper first cylindrical wall 60. It is fitted so that it can move up and down relative to the stem B1. Further, the discharge valve body 73 constitutes a discharge valve 75 with the discharge valve seat 54.When the annular piston B2 descends relative to the stem B1, the discharge valve body 73 comes into pressure contact with the discharge valve seat 54 and closes the discharge valve 75. In this state, the discharge valve 75 is opened when the valve rises relative to the stem B1.

  In the ejection head B3, a vertical cylinder 80 having a lower part fitted to the outer periphery of the upper third cylindrical wall 62 of the stem B1 is suspended from the back surface of the top wall 81, and a peripheral wall 82 is suspended from the peripheral edge of the top wall 81. A nozzle 83 that projects from the upper front surface of the cylinder 80 and that penetrates the front of the peripheral wall 82 is provided. Further, in the lowest lowered state in which the movable ejection part B is pushed down, the inner periphery of the peripheral wall 82 is screwed to the outer periphery of the peripheral wall 23 of the ring cap to maintain the lowered state.

  The movable ejection part B is always urged upward by a coil spring s interposed between the lower surface of the tapered wall 63 of the stem B1 and the upper surface of the support plate 43 of the suction valve member A4.

  The closing cylinder member B4 has a base cylinder part 90 that protrudes from the upper end opening of the fixed suction part A and has a gap for introducing outside air inside, and is fitted to the lower part of the outer periphery of the stem B1 so as to be movable up and down. And an annular sliding closing portion 91 that protrudes from the lower outer periphery of the base cylinder portion 90 and is fitted to the upper inner periphery of the cylinder A1 so as to be movable up and down.

  The closed cylindrical member B4 is pushed down by a downward step provided on the upper part of the movable ejection part B when the movable ejection part B transitions to the locked state at the lowest position, and the outside air introduction hole 18 is closed. When the movable ejection part B shifts to the highest position, it is pushed up by the upward step provided at the lower outer periphery of the stem B1 to shift to the open state of the outside air introduction hole 18, and the movable ejection part B is liquid ejected. The outside air introduction hole 18 is kept open during vertical movement.

  The upward stepped portion is formed on the upper surface of the tapered wall 63 of the stem B1, and is configured to be able to push up the lower surface of the base cylindrical portion 90 of the closing cylindrical member B4, and the downward stepped portion is formed outside the vertical cylinder 80 of the ejection head B3. The lower surface of the spanned rib 84 is configured so that the upper surface of the base cylinder portion 90 of the closing cylinder member B4 can be pushed down.

  Then, when the movable ejection part B is pushed down from the highest rise state and the fixed suction part A is screwed and locked, the downward stepped part pushes down the upper surface of the base cylinder part 90 as shown in FIG. Then, the sliding blocking portion 91 is pushed down to a position where the outside air introduction hole 18 is blocked. Further, when releasing the screwing and raising the movable ejection part B from this state, the upward stepped part pushes up the lower surface of the base cylinder part 90 and slides and closes the lower surface of the inner fitting cylinder 20 as shown in FIG. Push up until the upper edge of part 91 is locked.

  Further, the movable ejecting portion B is configured to have a stroke of the movable ejecting portion B so that the upward stepped portion and the downward stepped portion do not come into contact with the base tube portion 90 when the movable ejecting portion B moves up and down during liquid ejection. The sliding closing portion 91 can be slidable in the upper part of the cylinder A1 and various shapes can be adopted as long as the outside air introduction hole 18 is closed and opened. In the example shown in the figure, upward and downward skirt-like portions are projected upward and downward from the base end portion, and the upward skirt-like portion is configured to be able to be locked to the second taper portion 15 of the cylinder A1 and closed. The cylindrical member B4 is configured not to be lowered more than necessary.

  By providing this closed cylinder member B4, the outside air introduction hole 18 of the cylinder A1 is closed in the state where the movable ejection part B is pushed down and locked, thereby preventing inconvenient liquid leakage from the container body 100 into the cylinder A1, Further, when the movable ejecting part B is in the highest rise state during use and when the movable ejecting part B for ejecting liquid is moved up and down, the outside air introduction hole 18 is opened and the outside air is opened from the gap between the stem B1 and the closed cylinder member B4. The configuration is such that outside air is introduced into the negatively pressurized container through the introduction hole 18. In addition, since the base cylinder portion 90 protrudes when the movable ejection portion B is in the highest rise state during use, when the container equipped with the pump 1 is used in a water field, the water ejected from a shower or the like is fixed to the stem B1. It is possible to prevent as much as possible from entering through the gap between the upper end opening edge of the suction part A.

  An example of how to use the pump 1 configured as described above will be described. When the pump 1 is not used for storage, transportation, etc., the movable ejection part B as shown in FIG. 1 is screwed. At this time, the sliding closing portion 91 of the closing cylinder member B4 closes the outside air introduction hole 18, while the seal cylinder 55 is closely fitted on the inner periphery of the first peripheral wall 11a of the cylinder A1.

  Further, when used, the ejection head B3 is rotated to remove the screw and raise it. At this time, the seal cylinder 55 is detached from the first peripheral wall 11a, and the upper and lower sides thereof communicate with each other through the outside of the seal cylinder 55. Further, the lower surface of the closed cylindrical member B4 is pushed up by abutting and locking with the upward stepped portion of the upper surface of the tapered wall 63 of the movable ejection portion B, and the blockage of the outside air introduction hole 18 by the sliding closed portion 91 is released. Next, the ejection head B3 is moved up and down several times to perform an initial operation, and the liquid in the container body 100 is introduced into the cylinder A1 to make preparations. At this time, the closed cylinder member B4 is stopped at the highest position where it is pushed up. Next, when the ejection head is pushed down, the pressurized liquid in the cylinder A1 opens the discharge valve 75 and ejects from the nozzle 83 through the stem B1. Next, when the head is released, the movable jet B is raised by the action of the coil spring s, and the cylinder A1 is negatively pressured, so the discharge valve 75 is closed and the liquid in the container body 100 is introduced by opening the suction valve 45. Is done.

  4 and 5 show other examples. In the example of FIG. 1, the configuration of the suction valve member A4 is different and the configuration of a part of the stem B1 is different.

  The suction valve member A4 in this example is a suction valve plate in the center via a plurality of elastic connecting pieces 41 at equal intervals in the circumferential direction from the inner circumference of the fitting cylinder 40 fitted to the inner circumferential lower end of the cylinder A1. The suction valve plate 42 is elastically pressed onto the suction valve seat 12, and the suction valve seat 12 and the suction valve plate 42 form a suction valve 45. Further, through a plurality of connecting rods 46 provided in the circumferential direction on the upper surface of the fitting cylinder 40, a seal cylinder 48 having a flange 47 projecting outward from the lower end portion is erected, and a plurality of pieces are radially provided on the inner surface of the seal cylinder 48. A radiation plate 49 is stretched over. The outer surface of the flange 47 is closely fitted to the inner surface of the first peripheral wall 11a of the cylinder A1. When the movable ejecting portion B is in the lowest lowered state, the lower end portion of the outer surface of the stem B1 is closely fitted to the upper end portion of the inner surface of the seal cylinder 48, and the tightly fitting portion constitutes the seal portion.

  Further, a flange-like discharge valve seat 54 is extended from the lower outer periphery of the lower member B1a of the stem B1, and a plurality of circumferential support rods 57 are suspended downward from the outer peripheral edge of the discharge valve seat 54. 56 is protruding. A coil spring s is interposed between the lower surface of the discharge valve seat 54 and the upper surface of the flange 47. Other configurations are the same as those in the example of FIG.

  An example of usage in the case of this example will be described. When not in use such as storage and transportation, the movable ejection part B as shown in FIG. 4 is screwed. At this time, the sliding blocking portion 91 of the closing cylinder member B4 closes the outside air introduction hole 18, while the outer surface of the flange 47 of the sealing cylinder 48 is always tightly fitted to the inner surface of the first peripheral wall 11a of the cylinder A1, The upper end portion of the inner surface of the seal cylinder 48 is closely fitted to the lower end portion of the outer surface of the stem B1, and the upper and lower sides in the cylinder A1 are blocked.

  Further, when used, the ejection head B3 is rotated to remove the screw and raise it. At this time, the lower end portion of the outer peripheral surface of the stem B1 is detached from the seal cylinder 48, and the upper and lower sides in the cylinder A1 communicate with each other. Further, the lower surface of the closed cylindrical member B4 is pushed up by abutting and locking with the upward stepped portion of the upper surface of the tapered wall 63 of the movable ejection portion B, and the blockage of the outside air introduction hole 18 by the sliding closed portion 91 is released. The subsequent operations are the same as those in the example of FIG.

  In addition, each said member is mainly formed with a synthetic resin, and it is also possible to use a metal or a flexible elastomer etc. together as needed.

1 ... Pump A ... Fixed suction part
A1 ... Cylinder
10 ... bottom wall, 11 ... peripheral wall, 11a ... first peripheral wall, 11b ... second peripheral wall, 11c ... third peripheral wall,
11d ... 4th peripheral wall, 12 ... Suction valve, 13 ... Pipe fitting cylinder, 14 ... 1st taper part,
15 ... 2nd taper part, 16 ... Flange part, 17 ... Flange, 18 ... Outside air introduction hole, 19 ... Pipe
A2 ... Ring cap
20 ... inner fitting cylinder, 21 ... outer fitting cylinder, 22 ... top plate, 23 ... peripheral wall, 24 ... flange
A3… Installation cap
30 ... Top plate, 31 ... Screw
A4… Suction valve member
40 ... fitting tube, 41 ... elastic connecting piece, 42 ... suction valve plate, 43 ... support plate, 44 ... cross plate,
45 ... Suction valve, 46 ... Connecting rod, 47 ... Flange, 48 ... Seal cylinder, 49 ... Radiation plate B ... Movable jet part
B1 ... Stem
B1a ... Lower member
50 ... Bottom wall, 51 ... Tube wall, 52 ... Lower tube wall, 53 ... Through hole, 54 ... Discharge valve seat, 55 ... Seal tube,
56 ... Space rib, 57 ... Support rod
B1b ... Upper member
60 ... Upper first cylindrical wall, 61 ... Upper second cylindrical wall, 62 ... Upper third cylindrical wall, 63 ... Tapered wall,
64… Flange wall
B2 ... Annular piston
70 ... Outer upper sliding part, 71 ... Outer lower sliding part, 72 ... Inner upper sliding part, 73 ... Discharge valve body,
74 ... Connecting plate, 75 ... Discharge valve
B3 ... Ejection head
80 ... Vertical cylinder, 81 ... Top wall, 82 ... Perimeter wall, 83 ... Nozzle, 84 ... Rib
B4 ... Blocking cylinder member
90 ... Base tube part, 91 ... Sliding block part s ... Coil spring
100 ... Container body
101 ... trunk, 102 ... shoulder, 103 ... mouth and neck

Claims (5)

  A cylinder (A1) with an outside air introduction hole (18) at the top of the peripheral wall (11), and a suction valve (45) at the bottom, has its upper end protruding beyond the neck and neck (103) and its lower end A stationary suction part (A) that is fixed to the container body (100) while being suspended in the body part (101), and an annular piston (B2) that slides on the cylinder (A1) are provided with a bottomed stem (B1 ) A movable jetting part (B) which is linked to the lower part of the outer periphery so as to be able to move up and down relatively, has a jetting head (B3) fitted to the upper end of the stem (B1), and is provided so as to be able to move up and down in an upward biased state. The liquid in the container is sucked up and ejected from the nozzle (83) by the vertical movement of the movable ejection part (B), and can be locked to the fixed suction part (A) with the movable ejection part (B) pushed down. In the liquid jet pump constructed as described above, the movable jet part (B) and the fixed suction part (A ) And the cylinder (A1) to form a seal that blocks the top and bottom of the cylinder (A1), and the closed cylinder member (B4) mounted on the outer periphery of the stem (B1) to block the outside air introduction hole (18) When the part (B) is at the highest position and when the movable ejection part (B) moves up and down for liquid ejection, the seal part is opened and the outside air introduction hole (18) is opened. Features a pump.   The said seal | sticker part was comprised by the close fitting part of the seal | sticker cylinder (55) suspended from the outer peripheral lower part of the movable ejection part (B), and the surrounding wall part inner surface formed in the small diameter of the cylinder (A1) lower end part. The pump described in.   Close fitting of the seal cylinder (48) with the flange (47) outer circumference extending from the lower end to the cylinder (A1) inner circumference and the lower end outer circumference of the stem (B1) The pump according to claim 1, wherein the pump is composed of parts.   The seal cylinder (48) is fitted on the lower end of the inner periphery of the cylinder (A1) and is integrally formed on the fitting cylinder (40) that supports the suction valve plate (42) via the elastic connecting piece (41). The pump according to claim 3, wherein the pump is formed as a whole as a suction valve member (A4).   The closed cylinder member (B4) has its upper end protruding from the upper end opening of the fixed suction part (A), and has a gap for introducing outside air inside, and is fitted to the lower part of the outer periphery of the stem (B1) so that it can move up and down. The base cylinder part (90), and an annular sliding closure part (91) that protrudes from the lower outer periphery of the base cylinder part (90) and is slidably fitted to the upper inner periphery of the cylinder (A1) The closed cylindrical member (B4) is pushed down by the downward step provided on the upper part of the movable ejection part (B) when the movable ejection part (B) shifts to the lowest lowered locking state. 18) When the movable ejection part (B) moves to the highest position, it is pushed up by the upward step provided on the lower outer periphery of the stem (B1) to open the outside air introduction hole (18). The pump according to any one of claims 1 to 4, wherein the pump is configured to shift.