JP5574370B2 - Liquid ejector capable of upside-down ejection - Google Patents

Description

  The present invention relates to a liquid jetting device capable of jetting upside down.

  Various ejectors capable of ejecting liquid not only in an upright state but also in an upside-down state are proposed. (For example, see Patent Document 1)

  The ejector described in Patent Document 1 includes an upper bush having an upper ball valve and a lower bush having a lower ball valve accommodated in a bush cover via a cylinder cover at the lower end of the cylinder. It has a complicated structure fitted with.

JP 2009-143617 A

  The present invention is capable of reliably ejecting liquid both upright and upside down, has a simple structure, and can be formed by simply modifying a conventional accumulator-type liquid ejector. A liquid ejector is proposed.

The first means is configured as follows. That is,
Compared with the remaining peripheral wall portion, the lower end portion of the peripheral wall portion 20 has a small diameter portion 20a, the small diameter portion 20a is provided with a communication hole 21, and a check valve 32 capable of unidirectional flow from upstream to downstream is provided above the communication hole 21. A cylinder B2 with a closed bottom end,
The cylinder B2 is mounted so as to be able to be pushed in an upward biased state, and an operation member B3 having a pressure accumulation type discharge valve 52,
There is a clearance gap 60 between the cylinder B2 and a cylindrical adapter B4 that moves up and down relative to the cylinder B2 by its own weight when shifting from upright to inverted and from inverted to upright. Prepared,
Between the cylinder B2 and the adapter, there are provided an upper seal portion 61 that blocks the flow clearance 60 when upright, and a lower seal portion 62 that blocks the flow clearance 60 when inverted, and the upper seal portion when upright 61 is shut off, the lower seal 62 is opened, and the lower end of the adapter B4 and the communication hole 21 communicate with each other. When inverted, the lower seal 62 is shut off, and the upper seal 61 is opened and the adapter is inverted. in positive inverted jettable liquid ejectors B4 upper and the communication hole 21 is provided so as to communicate,
The intermediate cylinder part 63e that is in the vertical middle part of the adapter B4 and that faces the small diameter part 20a of the cylinder B2 in the inverted state of the liquid ejector is more upright than the adapter part that exists above the intermediate cylinder part 63e in the upright state. Formed into a small diameter ,
A plurality of guide ribs 65 projecting in the circumferential direction are provided on the inner circumference of the intermediate cylinder portion 63e of the adapter B4, with the inner surface being brought close to the outer circumference of the small diameter portion 20a of the cylinder B2.
The upper sealing portion 61 protrudes from the outer periphery of the cylinder B2 portion above the small-diameter portion 20a, and the upper surface of the locking protrusion 26 is brought into contact with the upper surface of the locking protrusion 26 when standing upright to block the upper and lower clearance gaps 60. In addition, it consists of an engaging ridge 66 projecting around the inner periphery of the adapter B4,
The lower seal portion 62 is composed of a lower surface of the cylinder B2 and a flange 64 that is in contact with the lower surface of the cylinder B2 when it is inverted to block the upper and lower sides, and that protrudes from the inner periphery of the adapter portion below the intermediate cylinder portion.

The second means is configured as follows. That is, in the first means, the adapter B4 is fitted with the upper adapter B4a provided with an engaging protrusion 66 and the upper end of the upper adapter B4a at the lower end, and the flange 64 is protruded. The lower adapter B4b installed.

The third means was configured as follows. That is, in any one of the first means and the second means, the check valve 32 is mounted on the check valve seat 24 formed in the lower part of the cylinder B2 and the check valve seat 24. The bottom surface of the straightening rod 29 supported by the center in the cylinder B2 by the support plate 30 that is configured by a plurality of circumferentially fitted in the cylinder peripheral wall portion 20 above the check valve seat 24. And the ball-shaped valve element 31 is provided between the check valve seat 24 and the upper surface.

The fourth means is configured as follows. That is, in any one of the first to third means, the actuating member B3 projects the small diameter piston 42 sliding in the cylinder B2 on the lower outer periphery and the large diameter piston on the upper outer periphery. And a communication pipe B3a having a tip formed in the discharge valve body 44 and provided with a flow path 46 extending from the inside of the cylinder B2 to above the large diameter piston 43, and a large diameter cylinder 50 in which the large diameter piston 43 slides. And a discharge valve seat 51 with which the discharge valve body 44 at the tip of the communication pipe B3a is in pressure contact constitutes an accumulator-type discharge valve 52, and from the inside of the large-diameter cylinder 50 to the jet outlet 53 via the discharge valve 52. And an ejection head B3b having an ejection passage 54 to be communicated with each other, and a pressure-accumulation type discharge valve 52 is configured to open at a hydraulic pressure generated by a difference in diameter between the cylinder B2 and the large-diameter cylinder 50.

  According to the present invention, a part of the structure of the cylinder B2 is changed and the cylindrical adapter B4 is attached to the cylinder B2, so that the liquid can be stably ejected both in the upright state and in the inverted state. A liquid ejector that can be ejected upside down can be obtained.

  The upper seal portion 61 protrudes from the outer periphery of the cylinder B2 and contacts the upper surface of the engaging protrusion 26 when it is upright. A flange that is configured with a protruding protrusion 66 and that has a lower seal portion 62 that contacts the lower surface of the cylinder B2 and the lower surface of the cylinder B2 when inverted, blocking the top and bottom, and protruding from the inner periphery of the adapter When configured with 64, each seal portion can be smoothly blocked and opened, and as a result, the adapter B4 can be moved without stagnation.

  When the adapter B4 is composed of the upper adapter B4a with the projecting protrusion 66 projecting and the lower adapter B4b with the upper end fitted to the lower end of the upper adapter B4a and the flange 64 projecting Since the projecting widths of the engaging ridge 66 and the flange 64 projecting from the adapter B4 can be increased as necessary, the sealing performance of the upper seal portion 61 and the lower seal portion 62 can be further improved.

  When multiple guide ribs 65 with an inner peripheral surface close to the outer periphery of the cylinder B2 are provided on the lower inner periphery of the adapter B4 in the circumferential direction, the cylinder B2 of the adapter B4 is combined with the engaging protrusion 66 on the upper part. There is an advantage that the vertical movement with respect to can always be performed at a stable interval of a predetermined width.

  The check valve 32 is composed of a check valve seat 24 formed in the lower part of the cylinder B2 and a ball-shaped valve body 31 placed on the check valve seat 24, and a cylinder peripheral wall above the check valve seat 24. The ball-shaped valve element 31 can be moved between the lower surface of the straightening rod 29 supported at the center in the cylinder B2 and the upper surface of the check valve seat 24 by the support plate 30 fitted in the circumferential direction in the portion 20 Is provided, the check valve 32 has a simple structure and an assembling operation.

  The actuating member B3 has a small-diameter piston 42 that slides in the cylinder B2 projecting from the lower outer periphery and a large-diameter piston projecting from the upper outer periphery, the tip formed on the discharge valve body 44, and the large inside from the cylinder B2. A communication pipe B3a having a flow path 46 extending above the diameter piston 43, a large diameter cylinder 50 in which the large diameter piston 43 slides, and a discharge valve seat 51 to which the discharge valve body 44 at the tip of the communication pipe B3a is pressed. A pressure accumulation type discharge valve 52, and a jet head B3b provided with a jet passage 54 communicating from the inside of the large diameter cylinder 50 via the discharge valve 52 to the jet outlet 53. However, when it is configured to open with a hydraulic pressure generated by the difference in diameter between the cylinder B2 and the large-diameter cylinder 50, there is an advantage that this type of conventional structure can be used as it is.

It is a half cross-sectional view of a liquid ejector that can be ejected upside down. Example 1 It is a half cross-sectional view of a liquid jetting device capable of jetting upside down in an inverted state. Example 1 It is a half cross-sectional view of a liquid ejector that can be ejected upside down. (Example 2) It is a half cross-sectional view of a liquid jetting device capable of jetting upside down in an inverted state. (Example 2)

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

  1 and 2 show an example of a liquid ejector 1 formed by mounting a pump B on a container body A. FIG.

  The container body A stands the mouth and neck 4 from the trunk 2 via the shoulder 3.

  The pump B includes a mounting cap B1, a cylinder B2, an operating member B3, an adapter B4, and a pipe B5.

  The mounting cap B1 has a flange-like top wall 11 extending from the upper edge of the peripheral wall 10 to be fitted to the outer periphery of the mouth neck 4 and guides the locking cylinder 12 from the inner peripheral edge of the top wall 11 from the outside. Each tube 13 is erected.

The cylinder B2 has a bottomed cylindrical shape with an open upper end, and a communication hole 21 that communicates the inside and the outside is formed in the lower portion of the peripheral wall portion 20, and a flange 22 projects outward from the upper end. Specifically, the lower end portion of the peripheral wall portion 20 extending from the peripheral edge of the bottom wall portion 23 is formed in the small diameter portion 20a, and the communication hole 21 is formed in the small diameter portion 20a. Further, the taper-shaped upper portion extends upward from the upper end of the medium diameter portion 20c by extending the medium diameter portion 20c upward through a taper-shaped lower inclined portion 20b extending upward from the upper end of the small diameter portion 20a. The large-diameter portion 20e is extended through the inclined portion 20d, and the flange 22 is extended from the upper end edge of the large-diameter portion 20e. Further, the lower portion of the inner surface of the lower inclined portion 20b is formed in the check valve seat 24, and a protrusion whose upper surface forms an upward step portion 25 is provided around the upper portion. Further, a locking protrusion 26 is provided on the outer surface of the large-diameter portion 20e immediately above the upper inclined portion 20d. Further, a first through-hole 27 and a second through-hole 28 related to the introduction of outside air into the container body A are formed in the large-diameter portion 20e above the locking protrusion 26 at a predetermined interval. .

  A straightening rod 29 is supported in the center of the cylinder B2 so that liquid can flow therethrough. The rod 29 has a bar shape in which a support plate 30 having a lower surface fitted on the upper surface of the upward stepped portion 25 and an outer surface fitted on the inner surface of the cylinder B2 is projected in the circumferential direction at a plurality of circumferentially lower ends. In addition, a ball-shaped valve element 31 is placed on the check valve seat 24 to constitute a check valve 32. The ball-shaped valve element 31 includes a lower surface of a straightening rod 29 and a check valve seat. It is mounted so that it can move between 24 upper surfaces. The cylinder B2 configured in this manner is integrated by fitting a flange 22 on the back surface of the top wall 11 of the mounting cap B1, and by fitting the mounting cap B1 on the outer periphery of the mouth neck 4, the packing p is interposed. The flange 22 is pressure-contacted with the upper surface of the mouth-and-neck portion 4 in a liquid-tight manner, and the peripheral wall portion 20 is mounted in a state of hanging in the container body A.

  The actuating member B3 is mounted so as to be able to be pushed into the cylinder B2 in an upwardly biased state, and is provided with a pressure accumulating discharge valve 52. The actuating member B3 in this example includes a communication pipe B3a and an ejection head B3b.

  The communication pipe B3a is formed with a cylindrical portion 40 at the lower portion and a rod-like portion 41 at the upper portion, and an annular small-diameter piston 42 that slides in the cylinder B2 protrudes from the lower outer periphery of the cylindrical portion 40. . An annular large-diameter piston 43 protrudes from the upper outer periphery of the rod-like portion 41. Further, the tip of the rod-like portion 41 is formed in a conical shape to constitute the discharge valve body 44. Further, an annular sliding piece 45 that slides on the inner periphery of the cylinder B2 is provided on the outer periphery of the cylindrical portion 40, which is a predetermined position in the intermediate portion between the small diameter piston 42 and the large diameter piston 43. The sliding piece 45 is related to introduction and blocking of outside air through the first through hole 27 and the second through hole 28. Further, a flow path 46 is provided which communicates from the cylinder B2 to a later-described large-diameter cylinder via the communication pipe B3a. In this example, the communication pipe B3a is formed of two members. A coil spring s is interposed between the lower surface of the cylindrical portion 40 and the upper surface of each support plate 30 of the rectifying rod 29.

The ejection head B3b includes a large-diameter cylinder 50 on which a large-diameter piston 43 slides, and forms a pressure-accumulation type discharge valve 52 with a discharge valve seat 51 to which a discharge valve body 44 at the tip of the communication pipe B3a is pressed. In addition, a jet passage 54 that communicates from the inside of the large-diameter cylinder 50 to the jet port 53 via the discharge valve 52 is provided. In addition, the lower end of the outer peripheral wall 55 faces the locking cylinder 12 and the guide cylinder 13 so that it can be pushed down, and the engaging ridge protruding on the outer periphery of the lower end of the large-diameter cylinder 50 It is locked to the locking ridge provided on the protrusion to prevent it from coming out upward.

  When the operation member B3 is pushed down by pushing down the ejection head B3b, the inside of the cylinder B2 and the large-diameter cylinder 50 is pressurized. At this time, the discharge valve 52 is hydraulically generated by the difference in diameter between the cylinder B2 and the large-diameter cylinder 50. Is configured to open.

  The adapter B4 is provided with a flow clearance 60 between the cylinder B2 and moves up and down relative to the cylinder B2 by its own weight at the time of transition from upright to inverted and at the time of transition from inverted to upright. Further, between the cylinder B2 and the adapter B4, an upper seal portion 61 that blocks the flow gap 60 when upright, and a lower seal portion 62 that blocks the flow gap 60 when inverted, as shown in FIG. Is provided.

In the illustrated example, the lower end portion of the tubular wall 63 is a fitting tubular portion 63a for pipe fitting, and a short first tube is passed through a taper-like first inclined portion 63b extending upward from the upper end of the fitting tubular portion 63a. A wall 63c is extended, and a second cylinder wall (intermediate cylinder) 63e is extended upward via a taper-like second inclined part 63d extending upward from the upper end of the first cylinder wall 63c. Furthermore, the third cylindrical wall 63g extends upward through a taper-shaped third inclined portion 63f extending upward from the upper end of the second cylindrical wall 63e, and from the upper end of the third cylindrical wall 63g. A fourth cylindrical wall portion 63i is extended upward through a taper-shaped fourth inclined portion 63h extending upward. A flange 64 projects inward from the inner surface of the first inclined portion 63b, a plurality of circumferential guide ribs 65 project from the inner surface of the second cylindrical wall portion 63e, and further, a fourth cylindrical wall portion 63i. An engaging protrusion 66 that engages with the upper surface of the locking protrusion 26 of the cylinder B2 is provided on the inner surface at a predetermined position.

  The locking protrusion 26 and the engaging protrusion 66 constitute an upper seal portion 61, and the lower surface of the cylinder B2 and the flange 64 constitute a lower seal portion 62. For the adapter B4, a material having a specific gravity greater than that of the liquid contained in the container body A may be appropriately selected because of its mechanism.

  The pipe B5 is configured such that the upper end is fitted to the fitting cylinder portion 63a and the lower end is suspended to the lower part in the container body A, and moves together with the adapter B4. The pipe B5 can also be used by making the lower end of the adapter longer.

  The case where the liquid ejector 1 configured as described above is used will be described. The state shown in FIG. 1 is an upright state. In this case, the adapter B4 is in a lower position with respect to the cylinder B2, and the locking ridge 26 and the engagement ridge 66 are engaged so that the upper seal portion 61 is moved. The upper and lower sides of the gap 60 are blocked, while the flange 64 is positioned below the cylinder bottom wall portion 23, and the lower seal portion 62 is opened.

  When the operating member B3 is pushed down from this state, the inside of the cylinder B2 is pressurized, and the inside of the large-diameter cylinder 50 communicating with the inside of the cylinder B2 via the flow path 46 is also pressurized. At this time, since the pressure in the large-diameter cylinder 50 becomes larger than the pressure in the cylinder B2 due to the difference in diameter between the cylinder B2 and the large-diameter cylinder 50, the communication pipe B3a moves downward with respect to the ejection head B3b, and the discharge valve 52 Opened and the pressurized liquid is ejected from the ejection port 53 through the ejection channel 54.

  When the pressing of the actuating member B3 is released, the actuating member B3 is lifted by the action of the coil spring s, and the pipe B5, the small diameter portion 20a of the cylinder B2 and the second cylindrical wall portion 63e of the adapter B4 are placed in the negative pressure cylinder B2. Then, the check valve 32 is opened through the gap 60 and the communication hole 21, and the liquid in the container A is introduced.

  When the liquid ejector 1 is inverted from the state of FIG. 1, the adapter B4 descends by its own weight as shown in FIG. The state shown in FIG. 2 is an inverted state. In this case, the adapter B4 is at an upper position in the upright state with respect to the cylinder B2, and the flange 64 is positioned on the cylinder bottom wall portion 23 and the lower seal portion. 62 blocks the upper and lower sides, while the engaging ridge 66 moves to a position below the locking ridge 26 and the upper seal portion 61 is opened.

  When the actuating member B3 is pushed in from this state, the inside of the cylinder B2 is pressurized and the ball-shaped valve body 31 is pressed against the check valve seat 24, and the large-diameter cylinder communicating with the inside of the cylinder B2 via the flow path 46 50 is also pressurized. Accordingly, as in the upright state, the communication pipe B3a moves away from the ejection head B3b, the discharge valve 52 is opened, and the pressurized liquid is ejected from the ejection port 53 via the ejection path.

  When the pressing of the actuating member B3 is released, the actuating member B3 descends by the action of the coil spring s, and the peripheral wall 20 of the cylinder B2 and the adapter are inserted into the negatively pressurized cylinder B2 from the opening of the cylindrical wall 63 of the adapter B4. The liquid in the container body A is introduced through the check valve 32 opened by the ball-shaped valve body 31 lowered by its own weight through the gap 60 between the B4 and the cylindrical wall 63 and the communication hole 21.

  Moreover, if the liquid ejector 1 is made to stand upright again from the state of FIG. 2, it will return to the state of FIG.

  FIGS. 3 and 4 show other examples. In this example, in the example of FIG. 1, the adapter B4 includes an upper adapter B4a provided with an engaging protrusion 66 and a projection of the upper adapter B4a. The upper end is fitted to the lower end, and the lower adapter B4b is provided with a flange 64 projectingly. The lower adapter B4b constitutes a lower part from the fourth inclined portion 63h of the adapter in the example of FIG. 1, and a fitting cylinder portion 67 is erected on the inner surface of the fourth inclined portion 63h. The upper adapter B4a forms a fourth cylindrical wall portion 63i. The fitting cylinder portion 67 is fitted and fixed to the lower inner surface of the upper adapter B4a and integrated. Other structures are the same as those in the example of FIG. 1 and the operation is also the same.

DESCRIPTION OF SYMBOLS 1 ... Liquid ejector A ... Container body 2 ... Torso part, 3 ... Shoulder part, 4 ... Mouth and neck part B ... Pump
B1… Installation cap
10 ... peripheral wall, 11 ... top wall, 12 ... locking cylinder, 13 ... guide cylinder
B2 ... Cylinder
20 ... peripheral wall part, 20a ... small diameter part, 20b ... lower slope part, 20c ... medium diameter part, 20d ... vertical slope part,
20e: Large diameter part, 21 ... Communication hole, 22 ... Flange, 23 ... Bottom wall part, 24 ... Check valve seat,
25 ... Upward stepped portion, 26 ... Locking protrusion, 27 ... First through hole, 28 ... Second through hole, 29 ... Rectifying rod,
30 ... support plate, 31 ... ball-shaped disc, 32 ... check valve
B3 ... Actuating member
B3a… Communication pipe
40 ... cylindrical part, 41 ... rod-like part, 42 ... small diameter piston, 43 ... large diameter piston, 44 ... discharge valve body,
45 ... Sliding piece, 46 ... Flow path
B3b… ejecting head
50 ... large diameter cylinder, 51 ... discharge valve seat, 52 ... discharge valve, 53 ... jet port, 54 ... jet channel, 55 ... outer wall
B4 ... Adapter
B4a… Upper adapter
B4b ... Lower adapter
60 ... Gap, 61 ... Upper seal part, 62 ... Lower seal part, 63 ... Cylinder wall, 63a ... Fitting cylinder part,
63b ... 1st inclined part, 63c ... 1st cylinder wall part, 63d ... 2nd inclined part,
63e ... 2nd cylinder wall part (intermediate cylinder part) ,
63f ... 3rd inclination part, 63g ... 3rd cylinder wall part, 63h ... 4th inclination part, 63i ... 4th cylinder wall part,
64 ... Flange, 65 ... Guide rib, 66 ... Engagement ridge, 67 ... Fitting cylinder
B5 ... pipe p ... packing s ... coil spring

Claims (4)

The lower end portion of the peripheral wall portion (20) is a small diameter portion (20a) compared to the remaining peripheral wall portion, and the small diameter portion (20a) is provided with a communication hole (21), and one side from upstream to downstream is provided above the communication hole (21). A cylinder (B2) closed at the lower end with a check valve (32) capable of continuous flow,
The cylinder (B2) is mounted so as to be able to be pushed in an upward biased state, and has an accumulating discharge valve (52) and an operating member (B3),
Cylinder (B2) has a flow clearance (60) between the cylinder (B2) and moves up and down relative to the cylinder (B2) by its own weight when shifting from upright to inverted and from inverted to upright. Adapter (B4)
Between the cylinder (B2) and the adapter, the upper seal part (61) that blocks the flow gap (60) when standing upright and the lower seal part (62) that blocks the flow gap (60) when inverted The upper seal part (61) is shut off when standing upright, and the lower seal part (62) is opened and the lower end of the adapter (B4) communicates with the communication hole (21). with (62) is blocked, in the upper seal portion (61) adapter in the inverted state is opened (B4) upper and the communication hole (21) is positive inverted jettable liquid ejector provided so as to communicate,
The middle cylinder part (63e), which is the middle part of the adapter (B4) in the vertical direction and faces the small diameter part (20a) of the cylinder (B2) when the liquid ejector is inverted, (63e) is formed with a smaller diameter than the adapter part existing above ,
A plurality of guide ribs (65) projecting in the circumferential direction are provided on the inner periphery of the intermediate tube portion (63e) of the adapter (B4), with the inner surface being close to the outer periphery of the small diameter portion (20a) of the cylinder (B2).
The upper seal part (61) abuts the locking ridge (26) projecting on the outer periphery of the cylinder (B2) part above the small diameter part (20a) and the upper surface of the locking ridge (26) when standing upright. The gap (60) for distribution is cut off from the top and bottom, and it is composed of an engaging ridge (66) provided on the inner periphery of the adapter (B4),
The lower seal part (62) is in contact with the lower surface of the cylinder (B2) and the lower surface of the cylinder (B2) when inverted, blocking the top and bottom, and the flange (64 ) And a liquid ejector that can be turned upside down. Insert the adapter (B4) into the upper adapter (B4a) with the protruding protrusion (66) and the upper end of the upper adapter (B4a). The liquid ejector according to claim 1, wherein the liquid ejector is composed of a lower adapter (B4b). The check valve (32) is composed of a check valve seat (24) formed at the bottom of the cylinder (B2) and a ball-shaped valve body (31) mounted on the check valve seat (24). A straightening rod (29) lower surface supported in the center of the cylinder (B2) by a support plate (30) fitted in a plurality of circumferential directions in the cylinder peripheral wall (20) above the check valve seat (24) The liquid ejector according to claim 1 or 2 , wherein the ball valve element (31) can be moved between the upper surface of the check valve seat (24). The actuating member (B3) has a small-diameter piston (42) sliding inside the cylinder (B2) protruding from the lower outer periphery and a large-diameter piston projecting from the upper outer periphery, and the tip is formed in the discharge valve body (44). And a communication pipe (B3a) having a flow path (46) extending from the inside of the cylinder (B2) to above the large diameter piston (43), and a large diameter cylinder (50) on which the large diameter piston (43) slides. And a discharge valve seat (51) with which the discharge valve body (44) at the tip of the communication pipe (B3a) comes into pressure contact constitutes an accumulator type discharge valve (52) and discharges from within the large diameter cylinder (50). An ejection head (B3b) having an ejection path (54) communicating with an ejection port (53) via a valve (52), and a pressure-accumulating discharge valve (52) includes a cylinder (B2) and a large-diameter cylinder 4. A liquid ejector capable of jetting upside down according to any one of claims 1 to 3 , wherein the liquid jet is configured to open with a hydraulic pressure generated by a difference in diameter from (50).