JP5196421B2 - Liquid jet pump - Google Patents

Description

  The present invention relates to a liquid jet pump.

  The liquid ejecting pump is used by being mounted on a container body that contains liquid, and by moving up and down a vertical movement member having a piston that slides in the cylinder, the liquid stored is ejected from the head at the upper end of the vertical movement member. Various proposals have been proposed. (For example, see Patent Document 1)

The liquid jet pump includes a cylindrical pump body, a piston that is reciprocally inserted into the pump body, a stem that extends upward from the piston, and an upper end portion of the pump body that is closed, and the stem is capable of reciprocating. It consists of an upper cap with a guide hole inserted into the top, an ejector head connected to the top end of the stem and communicating with the discharge nozzle, and a container cap that attaches and holds the pump body to the container, and consists of a piston, stem, and ejector head The liquid in the container is ejected by the vertical movement of the vertical movement member.
JP 2001-247146 A

  These pumps are configured to be locked in a state where the vertical movement member is pushed down in order to avoid inadvertent ejection of liquid when not in use such as distribution and storage. In the above conventional example, the outer surface of the upper cap A male screw is provided on the inner circumferential surface of the ejector head so that the ejector head can be held in a depressed state.

  In this way, the vertical movement member cannot be operated unless the screwing is released, and it is possible to surely prevent malfunction due to accidentally pushing down the head. However, if the containing liquid is in a state before use, the characteristics can be fully exhibited.However, if the head is screwed again after opening one end, that is, after ejecting the containing liquid, it is not possible. There is an inconvenience that the necessary liquid squirting will necessarily occur.

  The present invention has been made in view of the above points, and it is possible to lock the ejection head without unnecessarily ejecting liquid before unsealing and after unsealing after ejecting liquid at one end. The present invention proposes a liquid jet pump that is simple and can be formed without a large structural change compared to conventional products, and as a result, has the advantage of being inexpensively manufactured.

The first means is configured as follows. That is, the mounting cap A for mounting the guide tube 12 to the upstanding container body 100 to the upper surface, a cylinder B to be suspended in the container body 100, the guide tube 12 from the piston D ₃ that slides in a cylinder B inserted and fitted to the upper end to the injection head D ₂ of the stem D ₁ that extends upwardly, and a vertically movable member D provided to be vertically movable above biasing condition, vertically moving the vertically movable member D the liquid in the container body 100 to a liquid jet pumps as configured ejected from ejection port 54 of the injection head D ₂ by, with the guide cylinder 12, the peripheral wall of the injection head D ₂ for vertically moving the guide tube 12 outer circumference A locking mechanism is provided between the upper and lower ends of the vertical groove x ₁ , and the upper and lower locking grooves x ₂ and x ₃ are extended laterally from the upper and lower ends of the vertical groove x _1. And a projection y that can move in the groove x, the groove x on the outer periphery of the guide tube 12, and the projection y on the inner surface of the ejection head peripheral wall 52 Each set only on the inner surface of the cylindrical body 13 which is fitted, when the projection y projecting from the inner surface of the upper Symbol cylindrical body 13 is locked in the upper lateral groove x ₂ in uppermost position vertically movable member D is There, Ri vertically movable D is the lowest position Dare when projection y projecting from the inner surface of the cylindrical body 13 is locked into the lower lateral grooves x _3, upper and lower upper downward member D A shut-off mechanism that shuts off the cylinder B and the stem D ₁ in the locked state is provided , and the shut-off mechanism is formed in a rod-like shape in which a suction valve b ₁ is formed by a suction valve seat 21 provided at the lower end of the cylinder B. A poppet valve body C, a lower seal portion 42 projecting from the lower inner periphery of the stem D ₁ and liquid-tightly sliding on the outer periphery of the poppet valve body C, an upper seal portion 41 projecting above the lower seal portion 42, causes vertical movement of the stem D ₁ periphery predetermined width at the bottom can fitted, the ring constituting the discharge valve b ₂ between the discharge valve seat 45 projecting from the stem D ₁ outer peripheral lower end portion Of constituted by a piston D _3, in the lower latched state of the vertical movement member D, and disconnects the cylinder B and the stem D ₁ is an upper seal portion 41 is fitted liquid-tight in the poppet C periphery, In the upwardly locked state of the vertically moving member D, the inside of the cylinder B and the stem D ₁ are connected by the lower seal portion 42 that is liquid-tightly fitted to the outer periphery of the poppet valve body C and the piston D ₃ that is in close contact with the discharge valve seat 45. It was configured to shut off.

  Since the liquid ejection pump of the present invention includes a locking mechanism that can be locked at the highest position and the lowest position of the vertical movement member D, the vertical movement member D is engaged at the lowest position before opening. If it is stopped, the entire size can be reduced, and inadvertent leakage of liquid can be prevented, and the vertical movement member D can be locked at the highest position even after opening one end. Therefore, there is an advantage that the locked state can be obtained without the ejection of waste liquid.

Further, a guide cylinder 12, while the vertical grooves x ₁ provided with the peripheral wall 52 of the injection head D _2, since the provided projection y on the other, irrespective of whether the type of pump mechanism in the cylinder B applied Because it can, it will be versatile.

  When the groove portion x is provided on the outer periphery of the guide tube 12 and the protrusion y is provided on the inner surface of the cylinder 13 fitted to the inner surface of the ejection head peripheral wall 52, the groove portion x is exposed and the vertical movement member D is engaged. Stopping and unlocking are easier to recognize and handling is convenient. In addition, since the projecting portion y projects from the cylindrical body 13, the degree of freedom in selecting the shape and projecting width of the projecting portion y is increased compared to the case of projecting directly from the ejection head peripheral wall 52. More stable engagement with the groove part x or movement within the groove part x is possible.

When the groove part x is provided on the inner peripheral surface of the cylindrical body 13 fitted to the ejection head peripheral wall 52 and the protrusion y is provided on the outer periphery of the guide cylinder 12, the groove part x and the protrusion y cannot be seen from the outside. The appearance will be excellent. In addition, since the groove portion x is provided in the cylindrical body 13, the degree of freedom in selecting the shape of the protrusion y and the recess width of the groove portion x is increased, and the protrusion y can be engaged or moved more stably. It becomes. Another advantage that can be formed by fitting the cylindrical body 13 which is recessed a groove x to an existing injection head D _2.

In the case where a blocking mechanism for blocking the inside of the cylinder B and the inside of the stem D ₁ is provided in the upper and lower locked states of the vertical movement member D, the vertical movement member D is engaged at any position where it rises up or down. Even when the container is stopped, it is possible to prevent inconvenience such as leakage of the liquid even if the container body falls down.

The above-mentioned shut-off mechanism is provided with a rod-shaped poppet valve body C in which a suction valve b ₁ is formed with a suction valve seat 21 provided at the lower end of the cylinder B, and a poppet valve body C protruding from the lower inner periphery of the stem D _1. a lower seal portion 42 for liquid-tight slide outer periphery, an upper seal portion 41 protruding from the lower seal portion 42 upwardly, causes fitted possible vertical movement of the predetermined width to the stem D ₁ outer peripheral lower stem D ₁ A discharge valve seat 45 projecting from the lower end of the outer periphery and an annular piston D ₃ constituting the discharge valve b _{2. When} the vertically moving member D is in the downwardly locked state, the upper seal portion 41 is the poppet valve body C. Liquid tight fitting on the outer periphery cuts off the cylinder B and the stem D ₁ , and when the vertically moving member D is in the upwardly locked state, the lower seal portion 42 is liquid tight fitted on the outer periphery of the poppet valve body C, when the piston D ₃ is closely to the discharge valve seat 45 and as configured to block the cylinder B and the stem D ₁ is the Thus, the liquid can be prevented from leaking and the structure can be formed relatively easily.

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

  1 to 3 show an example of a liquid ejection pump 1, and the liquid ejection pump 1 includes a mounting cap A, a cylinder B, a poppet valve body C, and a vertical movement member D.

  The mounting cap A has a flange-like top wall 11 extending inwardly from the upper end of the mounting cylinder 10 fitted to the outer periphery of the mouth and neck portion 101 of the container body 100, and is guided upward from the inner peripheral edge of the top wall 11. Standing 12 up.

  The cylinder B has a cylindrical shape with upper and lower ends opened, and a flange 20 is extended outward from the upper end edge. Further, the lower end portion is formed in a tapered shape, and the suction valve seat 21 is formed on the upper surface of the tapered wall portion. Further, a plurality of circumferentially extending support ribs 22 are formed from the upper surface of the tapered wall portion above the suction valve seat 21 to the inner surface of the cylindrical wall above the suction valve seat 21, and a coil spring s is engaged with each support rib 22. A locking step 23 is provided for this purpose. A small-diameter fitting tube portion 24 is integrally suspended from the lower end portion of the tapered wall portion, and the upper end of the suction pipe 25 is fitted. The lower end of the suction pipe 25 is suspended below the container body 100.

  Then, the flange 20 is fitted to the lower surface of the mounting cap top wall 11 and is fitted and fixed by the support member 26. The support member 26 protrudes outwardly from between the two cylindrical portions, a lower cylindrical portion 26a fitted to the inner peripheral upper end portion of the cylinder, an upper cylindrical portion 26b fitted to the inner peripheral lower end portion of the guide cylinder 12. And an annular pinching cylinder portion 26c sandwiched between the flange 20 of the cylinder B and the top wall 11 of the mounting cap. The cylinder B is mounted with a packing 27 interposed between the lower surface of the flange 20 and the upper surface of the container neck portion 101 in a state of hanging down in the container body 100.

A poppet valve body C is mounted on the lower part of the cylinder B so as to be movable up and down. The poppet valve body C has a cylindrical portion with a large diameter at the bottom, a solid rod-shaped portion at the top, and a plurality of circumferential engagement ribs 30 projecting from the lower end of the outer periphery. forming a suction valve b _1. Further, the upper and lower sides from the state in which the lower surface of the cylindrical portion is in close contact with the suction valve seat 21 and the suction valve b ₁ is closed to the time when the engagement rib 30 contacts the lower surface of the coil spring s on the support rib 22. It is mounted so that it can move.

The vertically moving member D includes a stem D ₁ , an ejection head D _2, and a piston D ₃ .

The stem D ₁ has a cylindrical shape with upper and lower ends opened, and a coil spring s interposed between the lower surface of the annular protrusion 40 protruding from the lower end of the outer periphery and each locking step 23 of the cylinder B. Thus, the lower part is inserted into the cylinder B so as to be pushed in an upward biased state. The upper position of the inner circumference of the stem D ₁ the upper seal portion 41 of the annular, the inner peripheral lower end portion of the lower seal portion 42 of the annular and protruding respectively. The lower seal portion 42 has an inner peripheral edge fitted to the outer periphery of the poppet valve body C in a fluid-tight and slidable manner. Further, as shown in FIG. 2, the upper seal portion 41 has the vertically moving member D at the lowest lowered position. In some cases, the poppet valve body C is configured to be fluid-tightly fitted to the outer peripheral upper end of the poppet valve body C so that the fitting is released when the vertical movement member D is raised. Further, the lower portion of the stem D ₁ of the between the upper seal portion 41 and the lower seal portion 42 is bored a window hole 43 for communicating the inside and outside, the double cylindrical sliding the upper outer side of the window holes 43 A tube 44 is suspended. In this example, the stem is composed of two members.

In the ejection head D ₂ , a vertical cylinder 50 fitted to the outer periphery of the upper end of the stem D ₁ is suspended from the back surface of the top plate 51, and a peripheral wall 52 is suspended from the peripheral portion of the top plate 51. The peripheral wall 52 is suspended from the outer periphery of the guide tube 12 so as to be movable up and down. A nozzle 53 having a base end opened at the top of the vertical cylinder 50 passes through the peripheral wall 52 and protrudes forward, and a jet outlet 54 is opened at the tip thereof.

The piston D ₃ is fitted with the upper and lower ends of the outer cylindrical portion 60 having upper and lower ends tapered so as to be fluid-tightly slidable on the inner periphery of the cylinder B. The inner cylinder part 62 is extended. The upper end portion of the inner cylindrical portion 62 is fitted to the inner periphery of the stem sliding tube 44 so as to be liquid-tightly slidable, and is discharged by a lower end of the inner cylindrical portion 62 and a discharge valve seat 45 formed on the upper surface of the annular protrusion 40. constitute a valve b _2. It is mounted so that it can move up and down by a predetermined width from the state in which the lower end of the inner cylinder part 62 is in close contact with the discharge valve seat 45 formed on the upper surface of the annular protrusion 40 until the upper part is locked to the lower end of the sliding cylinder 44. .

When the liquid is ejected, when the vertically moving member D at the highest position is pushed down against the urging force of the coil spring s in the unlocked state, the inside of the cylinder B is pressurized, and the piston D ₃ is pushed by the pressurized liquid to the stem D. _The discharge valve b ₂ is opened relative to ₁ and opened from the window hole 43 through the stem D ₁ through the vertical cylinder 50 and the nozzle 53 through the nozzle D 53. If released to press the injection head D _2, vertically movable D is raised by upward biasing force of the coil spring s, piston D ₃ is then lowered relative stem D ₁ discharge valve b ₂ after rising close up. Further, the poppet valve body C is pulled upward by a frictional force with the lower seal portion 42, and is lifted until each engaging rib 30 comes into contact with the lower surface of the coil spring s. Thereafter, the lower seal portion 42 is popped. Slide on the outer periphery of the valve body C. As the poppet valve body C rises, the suction valve b ₁ opens, and as the vertical movement member D rises, the inside of the cylinder B becomes negative pressure so that the liquid in the container body 100 passes through the suction pipe 25 into the cylinder B. To be introduced.

The liquid ejection pump is provided with a locking mechanism for locking the vertical movement member D. The locking mechanism includes a groove x provided on the outer surface of the guide cylinder 12, it is constituted by a projection y provided in the peripheral wall 52 the inner surface of the injection head D _2. Groove x, as shown in FIG. 3, constituted by a longitudinal groove x ₁ having a predetermined length, an upper transverse grooves x ₂ and the lower lateral grooves x ₃ that each side f extended from upper and lower ends of the longitudinal groove x ₁ A pair of guide cylinders 12 are provided on both sides. The projecting portion y is provided so as to project from the lower end portion of the cylindrical body 13 fitted and fixed to the inner surface of the ejection head peripheral wall 52, and is configured to be movable in the groove portion x. In addition, you may project directly from the inner surface of the ejection head surrounding wall 52.

If the upper lateral groove x ₂ is the vertical movement member D is in the uppermost position, it is in the same level and the projection y, also when the lower lateral grooves x ₃ for vertical movement member D is in the lowest position, projection y It is arranged so that it is at the same level. By fitting the projection y rotates the vertically movable member D to the upper transverse grooves x ₂ in the uppermost position, depression of the vertical movement member D is disabled. At this time, as shown in FIG. 1, the sealing of the poppet valve body C by the lower seal portion 42, and is blocked within the cylinder B and the stem D ₁ by closure of the discharge valve b ₂ by the piston D _3. Therefore, leakage of the liquid can be prevented even if the container body 100 falls down. Further, by fitting the projection y rotates the vertically movable member D in the lower lateral grooves x ₃ in the top lowered position, rise of the vertical movement member D is disabled. At this time, as shown in FIG. 2, and seal the upper seal portion 41 fitted to the poppet valve body D periphery, and in the the stem D ₁ cylinder B is blocked, similarly there is that the container body 100 from falling However, leakage of the liquid can be prevented.

The upper lateral groove x ₂ and the lower lateral groove x ₃ extend in different directions from each other, but can naturally extend in the same direction, and may be in either the front or rear direction. .

FIGS. 4 to 7 show other examples. In the example of FIG. 1, the groove portion x is provided on the ejection head D2, and the projection portion y is provided on the guide tube 12. As shown in FIG. 7, the groove portion x is formed on the inner surface of the cylindrical body 13, and is fitted and fixed to the inner surface of the ejection head D2. As shown in FIG. 6, a pair of protrusions y are provided at opposite positions integrally with the upper end of the outer periphery of the guide tube 12. In the case of this example, as shown in FIG. 4, the lower horizontal groove x3 is at the same level as the protrusion y when the vertical movement member D is at the highest position, and the upper horizontal groove x2 is the vertical movement member D. 1 is located at the same level as the protrusion y when it is in the lowest lowered position, and is configured upside down from the example of FIG. The other configuration is the same as that of the example of FIG. The operation is also the same as in the example of FIG.

It is a half sectional view of a liquid jet pump. Example 1 It is a half sectional view of a liquid jet pump. Example 1 It is a partially notched principal part enlarged side view of a liquid ejection pump. Example 1 It is a half sectional view of a liquid jet pump. (Example 2) It is a partially notched principal part enlarged side view of a liquid ejection pump. (Example 2) It is a principal part expansion perspective view of a mounting cap. (Example 2) It is a perspective view of the cylinder which formed the groove part. (Example 2)

Explanation of symbols

1 ... Liquid ejection pump A ... Installation cap
10 ... mounting tube, 11 ... top wall, 12 ... guide tube, 13 ... cylindrical body, x ... groove, x ₁ ... longitudinal groove,
x ₂ ... Upper horizontal groove, x ₃ ... Lower horizontal groove B ... Cylinder
20 ... flange, 21 ... suction valve seat, 22 ... support rib, 23 ... locking step, 24 ... fitting cylinder,
25 ... suction pipe, 26 ... support member, 26a ... lower cylinder part, 26b ... upper cylinder part,
26c: Clamping cylinder, 27 ... Packing, s ... Coil spring C ... Poppet valve body
30 ... engaging rib, b ₁ ... suction valve D ... vertical movement member
D ₁ … stem
40 ... annular protrusion, 41 ... upper seal, 42 ... lower seal, 43 ... window hole, 44 ... sliding cylinder, 45 ... discharge valve seat
D ₂ ... ejecting head
50 ... Vertical cylinder, 51 ... Top plate, 52 ... Peripheral wall, 53 ... Nozzle, 54 ... Spout, y ... Projection
D ₃ … Piston
60 ... outer cylinder part, 61 ... annular connecting part, 62 ... inner cylinder part, b ₂ ... discharge valve

Claims (1)

A mounting cap (A) for mounting the guide cylinder (12) upright on the upper surface of the container body (100), a cylinder (B) depending on the container body (100), and sliding in the cylinder (B) The ejection head (D ₂ ) is fitted to the upper end of the stem (D ₁ ) that extends upward from the piston (D ₃ ) that passes through the guide cylinder (12), and can be moved up and down in the upward biased state. And a vertically moving member (D) provided, and by vertically moving the vertically moving member (D), the liquid in the container body (100) is ejected from the ejection port (54) of the ejection head (D ₂ ). And a locking mechanism is provided between the guide cylinder (12) and the peripheral wall (52) of the ejection head (D ₂ ) that moves up and down the outer periphery of the guide cylinder (12). the locking mechanism includes a longitudinal groove (x ₁₎ of the upper transverse groove for locking from the upper and lower ends to the respective side (x _2), the groove and extending the lower lateral grooves (x ₃₎ (x), The projection (y) is movable in the portion (x), and the groove (x) is fitted on the outer periphery of the guide tube (12), and the projection (y) is fitted on the inner surface of the ejection head peripheral wall (52). only respectively set on the inner surface of the cylindrical body (13), moves up and down when the projection projecting from the inner surface of the upper Symbol cylindrical body (13) (y) is engaged to the upper transverse grooves (x ₂₎ in the member ( D) is the highest position, and when the protrusion (y) protruding from the inner surface of the cylinder (13) is locked in the lower lateral groove (x ₃ ), the vertical movement member (D) is at its maximum. lowered position der is, a blocking mechanism for blocking the inside respectively the upper and lower locking state of the upper downward member (D) a cylinder (B) and the stem (D ₁₎ within the provided the blocking mechanism, the cylinder ( B) A rod-shaped poppet valve body (C) in which a suction valve (b ₁ ) is formed with a suction valve seat (21) provided at the inner lower end , and a poppet protruding from the lower inner periphery of the stem (D ₁ ) Liquid-tight slide around valve body (C) A lower seal portion (42) of the lower seal portion (42) an upper seal portion projecting from the upper and (41), causes vertical movement of the stem (D ₁₎ the outer peripheral lower portion predetermined width can fitted, stem (D ₁ ) Consists of an annular piston (D ₃ ) that constitutes a discharge valve (b ₂ ) with a discharge valve seat (45) protruding from the lower end of the outer periphery, and holds the vertical movement member (D) downward In the state, the upper seal part (41) is fluid-tightly fitted to the outer periphery of the poppet valve body (C) to shut off the cylinder (B) and the stem (D ₁ ), and the upper part of the vertical movement member (D). In the stopped state, the inside of the cylinder (B) and the stem (D ₁ ) are composed of the lower seal portion (42) that is liquid-tightly fitted to the outer periphery of the poppet valve body (C) and the piston (D ₃ ) that is in close contact with the discharge valve seat 45. A liquid ejection pump characterized by being configured to shut off the inside.

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