JP6601875B2 - Constant discharge valve - Google Patents

Description

  The present invention relates to a metering discharge valve.

  A discharge port is provided on the lower end side of the vertical cylindrical cylinder body that is attached to the sideways drainage pipe provided on the side surface of the liquid tank, and a valve member is inserted in the cylinder body so as to be movable up and down. It is known that the valve member is moved up and down by operating a lever attached to the upper part of the cylinder body, and the discharge valve formed by the lower end of the valve member and the discharge port is opened and closed ( Patent Document 1).

JP 2002-327850 A

  Although the thing of patent document 1 can adjust flow volume by adjusting the opening degree of a discharge valve, there was no function which discharges a fixed amount of liquid. For this reason, when a certain amount of liquid is to be measured, for example, a separately prepared measuring cup must be placed below the discharge port, the liquid should be discharged while looking at the measuring cup, and the required amount must be checked visually before weighing. Don't be. At this time, depending on the angle at which the measuring cap is viewed, it may be difficult to measure, or in order to accurately measure, the user may have to bend to align the line of sight with the measuring cup.

  An object of the present invention is to provide a metering discharge valve capable of easily metering a liquid.

First means, the first valve hole H1 of the liquid flows into the cylindrical wall 6, also seen including a second valve hole H2 a bottomed cylindrical cylinder 4 which were formed for the liquid discharge to the bottom wall 14, A valve body 2 in which a cap 20 having an insertion hole 22a in the center is attached to the upper end of the cylinder 4 ;
The outer peripheral surface of the stem 52 that is upwardly projected through the through hole 22a from the lower in the cylinder 4, the cylindrical wall 6 inside surface piston portion 33 that slides are connected to a first valve disposed in the piston portion 33 The first check valve V1 is formed by the portion B1 and the first valve hole H1, and the second check valve V2 is formed by the second valve portion B2 provided on the lower side of the stem 52 and the second valve hole H2. An actuating member 30 formed and biased downward;
Pulling means P for pulling up the operating member 30;
Comprising
The first check valve V1 and the second check valve V2 are closed from the first state in which the first check valve V1 is open and the second check valve V2 is closed by raising the operating member 30. In the metering discharge valve configured to reach a third state through which the first check valve V1 is closed and the second check valve V2 is open ,
The bottom wall 14 is formed in a ring-shaped bottom wall, and the valve cylinder portion 16 is suspended from the ring hole 14a of the bottom wall. The second valve hole H2 is formed by the ring hole 14a and the cylinder hole 16a of the valve cylinder portion 16. The second valve part B2 is slid from the lower side to the upper side of the valve cylinder part 16 by lifting the operating member 30, and is disengaged above the second valve hole H2.

In this means, as shown in FIG. 1, the operating member 30 having the first valve portion B1 and the second valve portion B2 is inserted into the cylinder 4 having the first valve hole H1 and the second valve hole H2 so as to be movable up and down. The first check valve V1 is constituted by the first valve part B1 and the first valve hole H1, and the second check valve V2 is constituted by the second valve part B2 and the second valve hole H2. A discharge valve is proposed.
By pulling up the operating member 30 using the pulling means P, the first check valve is moved from the first state (see FIG. 1) in which the first check valve V1 is open and the second check valve V2 is closed. After the second state (see FIG. 2) in which V1 and the second check valve V2 are closed, the third state (see FIG. 3) in which the first check valve V1 is closed and the second check valve V2 is open. It is configured to lead to.
In the second state, a certain amount of liquid is measured in the measuring chamber M, and then the liquid is discharged to the outside through the second check valve V2. As the pulling means P, the lever 70 is used in the illustrated example, but the present invention is not limited to this. For example, a pulling operation handle may be provided at the upper end of the operating member 30.

Further, in this means , from the bottom of the cylinder 4 shown in FIG. 1, the cylinder hole hangs down the valve cylinder part 16 forming the second valve hole H2, and the second valve part B2 rises from below in the valve cylinder part 16. The second check valve V2 is configured to open when it slides (see FIG. 2) and disengages upward (see FIG. 3). Since there is a time difference until the second check valve V2 opens after the second valve portion B2 moves, it is possible to accurately realize the state in which the first check valve V1 and the second check valve V2 are closed, Weighing work can be ensured.

The second means includes a first means, and lifting means P of the operation member 30, the intermediate portion 72 is supported on a part of the cap 20, formed at one end portion e1 closer than the intermediate portion 72 The linked portion L is linked to the upper end portion of the operating member 30 and is formed by a lever 70 formed so that the operating member 30 can be pulled up by lowering the other end portion e2.

  In this means, as shown in FIG. 1, the pulling means of the actuating member 30 is a lever 70, and even a weak user can move it accurately. In particular, in the second means in which the second valve portion B2 slides in the valve cylinder portion 16 as described above, frictional resistance is generated between the second valve portion B2 and the valve cylinder portion 16, but the resistance is caused by lever lever action. Weighing and discharging can be done without worrying about

The third means includes the second means, and the linkage portion L is a linkage hole 76 formed in the shape of a long hole in the longitudinal direction of the lever 70, and the stem 52 has a constricted portion 56 at the top. The constricted portion 56 is inserted into the link hole 76, so that the link between the link hole 76 and the stem 52 can be displaced by operating the lever.

  In this means, as shown in FIG. 1, the linkage portion L is a long-hole-like linkage hole formed in the longitudinal direction of the lever 70, and the constricted portion 56 on the upper end side of the stem 52 is formed in the linkage hole 76. Inserted. Thereby, as shown in FIG. 1 to FIG. 2 and FIG. 3, it is possible to displace the linkage portion, and it is possible to avoid the inconvenience that the stem is inclined in the lateral direction due to the tilting of the lever 70. Interlocking can be performed smoothly.

According to the invention relating to the first means, the first check valve V1 and the second check valve V2 are closed from the first state in which the first check valve V1 is open and the second check valve V2 is closed. Through this state, the first check valve V1 is closed and the second check valve V2 is open, so that the third state is reached. Therefore, a certain amount of liquid taken into the cylinder 4 in the second state. This is convenient because the user does not need to visually check the amount of liquid.
According to the invention according to the first aspect, since the second valve portion B2 of the second inner valve hole H2, including the tubular hole 16a of the valve cylinder 16 is slidable in the vertical direction, first check The metering function can be ensured by accurately realizing the second state in which the valve V1 and the second check valve V2 are closed.
According to the invention relating to the second means, the weighing operation can be performed by operating the lever, and it is easy to use even for a weak user.
According to the third aspect of the invention, the link between the link hole 76 and the stem 52 is formed so that it can be displaced by the operation of the lever, so that the link operation between the lever 70 and the actuating member 30 becomes smooth. .

It is a longitudinal cross-sectional view of the fixed amount discharge valve which concerns on 1st Embodiment of this invention. It is a longitudinal cross-sectional view in the measurement process of the fixed discharge valve shown in FIG. It is a longitudinal cross-sectional view in the discharge stroke of the fixed discharge valve shown in FIG.

  1 to 3 show a fixed discharge valve according to a first embodiment of the present invention. This fixed amount discharge valve includes a valve main body 2, an operation member 30, a lever 70, and a measuring cup 90. Each of these members can be formed of, for example, a synthetic resin or a metal.

  As shown in FIG. 1, the valve body 2 includes a cylinder 4, a joint 18, and a cap 20.

  The cylinder 4 has a bottomed cylindrical shape in which a bottom wall 14 is continuously provided at the lower end of a cylindrical wall 6 having an open top surface. The cylinder 4 has a first valve hole H1 serving as a liquid inlet and a liquid discharge on the bottom wall 14. A second valve hole H2 that is an outlet is formed.

The first valve hole H1 is provided at a part of the cylindrical wall 6 (an intermediate position in the vertical direction in the illustrated example) at a distance from the upper end of the cylindrical wall 6 that corresponds to the stroke width of the actuating member 30 described later. Yes.
From the cylindrical wall portion around the first valve hole H1, a connecting cylindrical portion 8 surrounding the first valve hole H1 protrudes outward in the cylinder radial direction. A flange portion 8 a is provided near the distal end of the connecting tube portion 8, and reinforcing ribs 8 b are respectively provided between the base end portion of the connecting tube portion 8 and the tube wall 6. Here, the term “base end” refers to the inner end of the cylinder wall 6 in the cylinder radial direction, and the term “tip” refers to the outer end in the cylinder radial direction.

  The second valve hole H2 is formed at an appropriate position (in the illustrated example, the central portion) of the bottom wall 14. The vertical width of the hole surface of the second valve hole H2 can be set to a length exceeding the thickness of the bottom wall 14 in order to ensure a sufficient seal margin when the valve is closed. In a preferred illustrated example, the bottom wall 14 is a ring-shaped bottom wall, and the valve cylinder portion 16 is suspended from the ring hole 14a of the bottom wall. The ring hole 14a and the cylinder hole 16a of the valve cylinder portion 16 The second valve hole H2 is formed.

An upper end portion of the cylindrical wall 6 of the cylinder 4 is formed as a large outer diameter portion 6a.
An arm 10 protrudes outward in the horizontal direction from an appropriate position of the cylindrical wall 6 (on the side opposite to the connecting cylindrical portion 8 in the illustrated example). A rod-like stopper 12 is erected from the tip of the arm 10 via a hinge-like easily breakable portion 10a that can be easily broken.

  The joint 18 is a horizontal cylinder, and a claw part 18a protrudes inward from the base end part of the cylinder, and the claw part 18a is engaged with the collar part 8a. Further, on the inner surface of the joint 18, a threaded portion 18b is formed for connection with a discharge pipe of a liquid tank (not shown).

  The cap 20 hangs the mounting cylinder portion 24 from the outer peripheral portion of the top plate 22 having an insertion hole 22 a in the center, and the mounting cylinder portion 24 is fitted to the outer surface of the cylinder wall 6 of the cylinder 4. In the illustrated example, the locking rib 24 a at the lower end of the mounting cylinder portion 24 is locked to the lower end of the large outer diameter portion 6 a of the cylindrical wall 6. A guide tube portion 26 is suspended from the insertion hole 22a.

  In this embodiment, the operating member 30 is formed of a first valve member 32 and a second valve member 50 as shown in FIG. These two members are formed separately and assembled to each other, but may be integrally formed from the beginning.

  The first valve member 32 has a cylindrical piston portion 33 that can slide in a liquid-tight manner on the inner surface of the cylindrical wall 6 of the cylinder 4, and from the upper end of the piston portion 33 through an inward flange portion 44. The connecting peripheral wall 46 is suspended.

As long as the said piston part 33 has the function as a cylindrical piston which raises / lowers the cylinder wall 6 inner surface of the cylinder 4 liquid-tightly, and the function as a valve part which opens and closes the said 1st valve hole H1, what kind of thing It may be a structure.
In the preferred illustrated example, the piston portion 33 is arranged on the outer surface of the vertical cylinder 34 concentric with the cylindrical wall 6, the upper first sliding strip 36, the middle second sliding strip 38 and the lower third sliding strip. Each of the three sliding strips is in fluid-tight sliding contact with the cylindrical wall 6 of the cylinder 4.
Each sliding strip is formed by a double rib r formed on the outer surface of the vertical cylinder and a seal ring о fitted between the double ribs.
A liquid passage hole 42 is opened in the vertical cylinder portion between the first sliding strip 36 and the second sliding strip 38.
Further, the first valve portion B1 is formed by the second sliding strip 38, the third sliding strip 40, and the vertical cylindrical portion between both sliding strips. However, these structures can be changed as appropriate.
A first check valve V1 is formed by the first valve portion B1 and the first valve hole H1. In the state of FIG. 1, the first check valve V1 is in an open state because the first valve portion B1 is located away from the first valve hole H1.

The connecting peripheral wall 46 is formed by hanging a large-diameter lower half 46c from a small-diameter upper half 46a through a step 46b. A plurality of contact ribs 48 are attached to the lower part of the inner surface of the upper half 46a.
A spring C is interposed between the upper surface of the stepped portion 46 b and the back surface of the cap 20. The upper portion of the spring is in contact with the outer surface of the guide tube portion 26, and the lower portion of the spring C is in contact with the contact rib 48.

  The second valve member 50 includes a stem 52 extending from the upper side of the cap 20 through the insertion hole 22a to the inside of the valve tube portion 16, and a folded tube portion 54 standing from the lower end of the stem 52 via an outward flange 53. Including.

The stem 52 has a small-diameter upper cylindrical portion 52a, a stepped intermediate portion 52b, and a large-diameter lower cylindrical portion 52c.
A lower half portion 46c of the connecting peripheral wall 46 is fitted to the lower portion of the upper cylindrical portion 52a, and a lower end portion of the lower half portion is abutted against the stepped intermediate portion 52b. Thereby, the first valve member 32 is fixed to the second valve member 50.
As shown in the drawing, the upper cylindrical portion 52a protrudes to the outside through the insertion hole 22a, and a constricted portion 56 and a closed end portion 58 are continuously formed in the protruding cylindrical portion.
The lower cylinder part 52 c passes through the lower part of the cylinder 4 and extends into the lower end part of the valve cylinder part 16.
The folded tube portion 54 is slidably and liquid-tightly fitted in the lower portion of the valve tube portion 16. A second valve portion B <b> 2 is formed on the outer peripheral surface of the folded tube portion 54.
A second check valve V2 is formed by the second valve portion B2 and the second valve hole H2. In the state of FIG. 1, since the second valve portion B2 is in the second valve hole H2, the second check valve V2 is closed.

  In the present invention, a space surrounded by the cylinder 4, the first valve member 32, and the second valve member 50 is defined as a measuring chamber M.

The lever 70 has a shape extending long in the left-right direction in FIG. 1, and a linkage portion L formed near one end e <b> 1 in the longitudinal direction is linked to the upper portion of the stem 52, and the longitudinal direction of the lever 70 is The intermediate portion 72 is placed on the support stand 78, and the other end portion e2 side of the lever 70 protrudes to the opposite side of the stem. When the other end e2 side is pulled down, the stem 52 can be pulled up by lever action.
In this embodiment, the support stand 78 supports (slides) in a manner in which the vicinity of the intermediate portion of the lever 70 can slide. However, this configuration can be changed as appropriate.
In the illustrated example, as the configuration of the linkage portion L, a long hole-like linkage hole 76 is opened in the longitudinal direction of the lever 70, and the constricted portion 56 of the stem 52 is inserted into the linkage hole 76. Between the hole edge of the linkage hole 76 and the constricted portion 56, a narrow allowance is provided so that the constricted portion can move in the longitudinal direction of the linkage hole and small so that the constricted portion cannot be removed from the linkage hole. The portion 56 is loosely fitted in the linkage hole 76. However, this structure can be modified as appropriate.
As a preferred example of a method for fitting the constricted portion 56 into the linkage hole 76, for example, the planar shape of the closed end portion 58 has a shorter side (one side visible in FIG. 1) than the width of the linkage hole 76. It is good to make it a substantially rectangular shape which is short and has a long side longer than the width of the linkage hole 76. Then, in a state where the longitudinal direction of the linkage hole 76 and the long side direction of the closed end portion 58 coincide with each other, the direction of the lever 70 is rotated by 90 ° after the closed end portion 58 passes through the linkage hole 76. Accordingly, the long side direction of the closed end portion 58 and the longitudinal direction of the linkage hole 76 are orthogonal to each other, so that the constricted portion 56 can be locked to the linkage hole 76 so as not to be pulled out.
In the present embodiment, the lever 70 is provided as the pulling means P for the operating member 30. However, if the operating member 30 can be pulled up, the structure thereof can be changed as appropriate.
In this embodiment, when not in use, the rod-shaped stopper 12 is brought into contact with the back surface on the other end e2 side of the lever 70 to prevent the lever 70 from moving unexpectedly due to contact with other objects.

In the measuring cup 90, a cup peripheral wall 94 is erected from the outer peripheral portion of the bottom plate 92, and an attachment tube portion 96 is erected from the central portion of the bottom plate 92. The mounting cylinder 96 is detachably fitted in the lower part of the lower cylinder 52c.
The cup peripheral wall 94 extends along the bottom of the cylinder wall 6 of the cylinder 4.

The metering discharge valve of the present invention is used in a state where the joint 18 is connected to a discharge pipe (not shown) of a liquid tank in advance. Prior to use, if the rod-shaped stopper 12 is removed and the lever 70 is operated, the actuating member 30 rises and the fitting between the stem 52 and the mounting cylinder 96 is disengaged. It comes to leave from 2.
In the first state shown in FIG. 1, since the first check valve V1 is open and the second check valve V2 is closed, the liquid is in the metering chamber M from the liquid tank through the first valve hole H1. In.
Next, when the other end e <b> 2 of the lever 70 is pulled down, the operating member 30 rises against the downward biasing force of the spring C.
At the stage where the lever 70 is pulled halfway, as shown in FIG. 2, the second sliding strip 38 rises to the upper side of the first valve hole H1. Accordingly, the first valve portion B1 closes the first valve hole H1. On the other hand, the second valve part B2 moves from the lower part to the upper part of the valve cylinder part 16, but has not yet detached from the valve cylinder part 16. That is, the second valve hole H2 which is the inner surface of the valve cylinder portion 16 remains closed by the second valve portion B2.
For this reason, the first check valve V1 and the second check valve V2 are in the second state closed. In this state, a certain amount of liquid is measured in the measuring chamber M.
When the lever 70 is further pulled to the end, as shown in FIG. 3, the second valve part B <b> 2 is detached from the valve cylinder part 16. As a result, the first check valve V1 is closed and the second check valve V2 is opened, and the liquid in the measuring chamber M is discharged through the second check valve V2.
When the lowering of the lever 70 is released, the operating member 30 and the lever 70 are returned to their original positions by the elastic restoring force of the spring C, and the first check valve V1 is opened and the second check valve V2 is closed. . As a result, the liquid in the liquid tank enters the measuring chamber M.

DESCRIPTION OF SYMBOLS 2 ... Valve | bulb main body 4 ... Cylinder 6 ... Cylindrical wall 6a ... Large outer-diameter part 8 ... Connection cylinder part 8a ... Collar 8b ... Reinforcement rib 10 ... Arm 10a ... Easily breakable part 12 ... Bar-shaped stopper 14 ... Bottom wall 14a ... Ring hole DESCRIPTION OF SYMBOLS 16 ... Valve cylinder part 16a ... Tube hole 18 ... Joint 18a ... Claw part 18b ... Screw part 20 ... Cap 22 ... Top plate 22a ... Insertion hole 24 ... Mounting cylinder part 24a ... Locking rib 26 ... Guide cylinder part 28 ... Support stand DESCRIPTION OF SYMBOLS 30 ... Actuating member 32 ... 1st valve member 33 ... Piston part 34 ... Vertical cylinder 36 ... 1st sliding strip 38 ... 2nd sliding strip 40 ... 3rd sliding strip 42 ... Liquid passage hole 44 ... Inward flange part 46 ... Connection peripheral wall 46a ... Upper half portion 46b ... Step portion 46c ... Lower half portion 48 ... Abutment rib 50 ... Second valve member 52 ... Stem 52a ... Upper cylindrical portion 52b ... Step-like intermediate portion 52c ... Lower cylindrical portion 53 ... outward flange 54 ... folded Cylinder portion 56 ... Constricted portion 58 ... Closed end portion 70 ... Lever 72 ... Intermediate portion 76 ... Link hole 78 ... Supporting base 90 ... Measuring cup 92 ... Bottom plate 94 ... Cup peripheral wall 96 ... Mounting cylinder portion B1 ... First valve portion B2 ... 2nd valve part C ... Spring e1 ... One end e2 ... The other end
H1 ... 1st valve hole H2 ... 2nd valve hole L ... Linking part M ... Metering chamber P ... Lifting means o ... Seal ring r ... Double rib V1 ... 1st check valve V2 ... 2nd check valve

Claims (3)

A bottomed cylindrical cylinder (4) in which a first valve hole (H1) for inflow of liquid is formed in the cylinder wall (6) and a second valve hole (H2) for liquid discharge is formed in the bottom wall (14). only including, an upper end of the cylinder (4), a valve body formed by attaching the cap (20) having an insertion hole (22a) in the center (2),
The outer peripheral surface of the upper protruded stem through an insertion hole (22a) from the bottom the inner cylinder (4) (52), the piston portion for sliding said tubular wall (6) internal surface (33) is connected, this A first check valve (V1) is provided by the first valve part (B1) provided in the piston part (33) and the first valve hole (H1), and a first check valve (V1) provided on the lower side of the stem (52). The second valve part (B2) and the second valve hole (H2) form a second check valve (V2), respectively, and an actuating member (30) biased downward;
Pulling means (P) for pulling up the actuating member (30);
Comprising
The first check valve (V1) and the second check valve are moved from the first state in which the first check valve (V1) is opened and the second check valve (V2) is closed by raising the operating member (30). A metering discharge valve configured to reach a third state in which the first check valve (V1) is closed and the second check valve (V2) is opened through the second state in which the valve (V2) is closed. In
The bottom wall (14) is formed in a ring-shaped bottom wall, and the valve cylinder portion (16) is suspended from the ring hole (14a) in the bottom wall, so that the ring hole (14a) and the cylinder of the valve cylinder portion (16) are formed. The second valve hole (H2) is formed by the hole (16a), and the second valve part (B2) is slid from the lower side to the upper side of the valve cylinder part (16) by lifting the operating member (30). The metering discharge valve is configured to move and disengage upward from the second valve hole (H2). The pulling means (P) of the actuating member (30) has an intermediate part (72) supported by a part of the cap (20), and is a linkage formed closer to one end part (e1) than the intermediate part (72). The lever (70) is formed such that the portion (L) is linked to the upper end of the operating member (30) and the operating member (30) can be pulled up by lowering the other end (e2). The fixed discharge valve according to claim 1 , characterized in that it is characterized in that: The linkage portion (L) is a linkage hole (76) formed in the shape of a long hole in the longitudinal direction of the lever (70), and the stem (52) has a constricted portion (56) at the upper portion. The portion (56) is inserted into the link hole (76), so that the link between the link hole (76) and the stem (52) can be displaced by operating the lever. The quantitative discharge valve according to claim 2 .