JPH0534368U - Fluid discharge device using ball valve - Google Patents

Abstract

(57) [Abstract] [Purpose] In a fluid discharge device using a ball valve, a holding member for slidably holding a check valve provided at a discharge port body is provided inside the ball valve, thereby reducing the size of the device. Try to. [Structure] The conduit 1 is formed in a conduit 19 having a fluid inlet 20 formed at one end and a fluid outlet 21 formed at the other end.
A ball valve 22 that interrupts the flow of the fluid flowing in 9 is rotatably provided, and a seal ring 28 that is in sliding contact with the outer peripheral surface of the ball valve 22 is attached to the fluid inlet 20 side of the pipe line 19. The discharge port body 3 on the fluid outlet 21 side of 19
1, a check valve 34 that is opened and closed by the pressure of fluid is slidably provided in the discharge port body 31, and a valve seat 36 on which the check valve 34 is seated is attached to the fluid outlet 2
1, the check valve 34 is provided with a rod-shaped member 37 protruding toward the inside of the conduit 19, and a holding member 38 for slidably holding the rod-shaped member 37 is provided in the ball valve 22. Arranged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fluid discharge device using a ball valve used in a discharge port of a portable fire pump.

[0002]

[Prior Art]

 Conventionally, there are various types of fluid discharge devices using a ball valve, for example, the one shown in FIG. First, there is provided a valve body 3 having a fluid inlet 1 formed at one end and a fluid outlet 2 formed at the other end. Inside the valve body 3, the fluid inlet 1 is connected to the fluid outlet 2. A ball valve 4 that intermittently interrupts the flow of the fluid flowing toward and away from it is rotatably housed. The ball valve 4 is supported by a pair of support shafts 5 and 6 arranged with an axis perpendicular to the flow axis of the fluid. One end of one support shaft 6 is provided with the ball valve 4. An operation handle 7 for kinematic operation is attached. Further, the ball valve 4 is formed with an inlet hole 8 communicating with the fluid inlet 1 and an outlet hole 9 always communicating with the fluid outlet 2 when the ball valve 4 is rotated. There is. Further, a seal ring 10 which is in contact with the outer peripheral surface of the ball valve 4 is attached to the valve body 3 on the fluid outlet 2 side.

Next, the flange portion 12 of the valve seat 11 is fastened and fixed to the fluid outlet 2 side of the valve body 3 by a plurality of bolts 13, and the valve seat 11 has a discharge port 14 A discharge port body 15 having a is attached rotatably. A check valve 16 which is opened and closed by the pressure of the fluid and which sits on the valve seat 11 when closed is slidably accommodated in the discharge body 15, and the check valve 16 is directed upward. A protruding rod-shaped member 17 is provided, and a holding portion 18 for holding the rod-shaped member 17 in a sliding manner is formed so as to project above the discharge port body 15.

[0004]

Since the holding portion 18 is formed so as to project above the discharge port body 15, the operator's hand hits the holding portion 18 when the operation handle 7 is rotated. There is a risk of injury.

When the fluid discharge device including the valve body 3 and the discharge port body 15 is attached to the portable fire pump, a fire hose or the like is caught in the holding portion 18, and the overall size of the portable fire pump is large. It may cause problems in transportation and storage.

[0006]

[Means for Solving the Problems]

 According to the first aspect of the present invention, a ball valve, which has a fluid inlet formed at one end and a fluid outlet formed at the other end, is provided with a ball valve for interrupting the flow of the fluid flowing in the pipe. A seal ring, which is provided in sliding contact with the outer peripheral surface of the ball valve, is attached to the fluid inlet side of the pipe line, a discharge port body is attached to the fluid outlet side of the pipe line, and the discharge port body is opened and closed by fluid pressure. A non-return valve is provided slidably, and a valve seat on which the non-return valve is seated is mounted so as to face the fluid outlet, and the non-return valve is provided with a rod-shaped member protruding toward the inside of the above-mentioned pipeline. A holding member for slidably holding the rod-shaped member was arranged in the ball valve.

According to a second aspect of the invention, in the first aspect of the invention, the holding member and the valve sheet are integrally formed.

[0008]

[Action]

 According to the first aspect of the present invention, a member extending from the fluid outlet side of the pipeline is disposed inside the ball valve by mounting a seal ring that is in sliding contact with the outer peripheral surface of the ball valve on the fluid inlet side of the pipeline. It becomes possible to do. Then, by providing the check valve with a rod-shaped member that protrudes toward the inside of the conduit and by disposing a holding member that slidably holds this rod-shaped member inside the ball valve, the holding member is outside the discharge port body. Since it does not protrude, the fluid discharge device including the pipe line and the discharge port is downsized.

According to the second aspect of the present invention, since the holding member and the valve seat are integrally formed, the holding member can be attached along with the attachment of the valve seat. Therefore, the holding member has the attaching portion. Since it is not necessary, the holding member can be downsized, and the valve seat can be easily attached by the holding member.

[0010]

【Example】

 An embodiment of the present invention will be described with reference to FIG. First, a valve body 19 which is a conduit is provided, a fluid inlet 20 is formed at one end of the valve body 19, and a fluid outlet 21 is formed at the other end of the valve body 19. A portable fire pump (not shown) is connected to the fluid inlet 20.

A ball valve 22 that intermittently interrupts the flow of the fluid flowing from the fluid inlet 20 toward the fluid outlet 21 is rotatably accommodated in the valve body 19. It is supported by a pair of support shafts 23 and 24 having an axis perpendicular to the flow axis of the above, and one support shaft 24 is provided with an operation handle 25 for rotating the ball valve 22. Further, the ball valve 22 is formed with an inlet hole 26 that communicates with the fluid inlet 20 and an outlet hole 27 that always communicates with the fluid outlet 21 when the ball valve 22 is rotated. .. Further, a seal ring 28, which comes into contact with the outer peripheral surface of the ball valve 22, is attached to the fluid inlet 20 side of the valve body 19 via an inlet member 29.

A discharge port body 31 having a discharge port 30 is rotatably attached to the valve body 19 on the side of the fluid outlet 21 through a retaining rotation mechanism using a plurality of balls 32 and an external seal 33. Has been. A plate-like check valve 34 that is opened and closed by the pressure of fluid is provided in the discharge port body 31, and a soft elastic material fixed to the check valve 34 when the check valve 34 is closed. A valve seat 36 on which a sealing material 35 made of is seated is attached to the discharge port body 31 so as to face the fluid outlet 21.

Next, a rod-shaped member 37 protruding toward the inside of the valve body 19 is fixed to the check valve 34. The rod-shaped member 37 is slidably held and integrated with the valve seat 36. The formed holding member 38 is arranged in the ball valve 22. The holding member 38 is inserted into the ball valve 22 through the outlet hole 27. The outlet hole 27 has a peripheral edge portion even when the ball valve 22 is rotated. The ball valve 22 is formed in a groove shape over the entire operating angle so as not to interfere with the holding member 38.

In such a configuration, FIG. 1 shows a state in which the flow of the fluid is blocked by the ball valve 22, and water is not discharged even if the portable fire pump is started from this state. Next, after driving the portable fire-fighting pump, the operation handle 25 is rotated from the state shown in FIG. 1 and the ball valve 22 is rotated to make the inlet hole 26 and the fluid inlet 20 communicate with each other. The fluid discharged from the portable fire-fighting pump flows into the ball valve 22 through the fluid inlet 20 and the inlet hole 26, and further, through the outlet hole 27 and the fluid outlet 21 which are always in communication with each other, to the check valve 34. It is pushed up, flows into the discharge port body 31, and is discharged from the discharge port 30.

Next, when the portable fire-fighting pump is stopped during the water discharge work, the pressure inside the valve body 19 decreases and the force for pushing up the check valve 34 disappears, so that the check valve 34 descends and the valve seat Seated at 36, air is prevented from entering the valve body 19 and the portable fire pump. Therefore, when the portable fire pump is driven again, the water discharge will be restarted immediately.

Here, since the seal ring 28 that is in sliding contact with the outer peripheral surface of the ball valve 22 is provided on the fluid inlet 20 side, it is possible to insert the holding member 38 into the ball valve 22 from the fluid outlet 21 side through the outlet hole 27. Becomes Therefore, unlike the conventional example shown in FIG. 2, it is not necessary to form the holding member 38 by projecting it on the outer peripheral surface of the discharge port body 31, and the fluid discharge device including the valve body 19 and the discharge port body 31 is small. Be converted. For this reason, when this fluid discharge device is attached to a portable fire pump, the overall size of the portable fire pump is reduced and it can be easily transported and stored. Further, when the operation handle 25 is rotated, there are no protrusions that may be touched by the operator's hand or caught by the fire hose, etc., and safety is improved and the protrusions are eliminated to improve the appearance. Further, since the valve seat 36 and the holding member 38 are integrally formed, the mounting work of the valve seat 36 can be performed through the holding member 38, and the mounting work of the valve seat 36 which is annular and has no catch can be easily performed. I can do it. Further, since the holding member 38 does not require a dedicated mounting member, the holding member 38 is downsized, and the resistance of the holding member 38 to the fluid is reduced.

[0017]

[Effect of the device]

 According to a first aspect of the present invention, a seal ring that is slidably in contact with an outer peripheral surface of a ball valve provided in a conduit having a fluid inlet formed at one end and a fluid outlet formed at the other end is provided in the conduit fluid. By mounting on the inlet side, the member extended from the fluid outlet side can be installed inside the ball valve, and the check valve installed inside the discharge port mounted on the other end side of the pipeline. A holding member for slidably holding the rod-shaped member is disposed inside the ball valve, so that a holding member for slidably holding the check valve needs to be formed outside the discharge port body. Therefore, it is possible to reduce the size of the fluid discharge device consisting of pipes and discharge ports. When this fluid discharge device is attached to a portable fire pump, etc., the overall dimensions of the portable fire pump etc. The smaller size makes it easier to carry and store. Furthermore, since there are no protrusions on the outside of the discharge port body, it is possible to prevent injuries such as hitting the protrusions with hands, and it is possible to clean the appearance without catching fire equipment such as fire hoses. Also, as in the case of the second aspect, the valve seat on which the check valve is seated and the holding member are integrally formed, so that the holding member can be attached together with the valve seat. Moreover, since the valve seat mounting work can be performed via the holding member, the mounting work between the valve seat and the holding member can be easily performed, and a dedicated mounting portion for mounting the holding member is unnecessary. Therefore, since the holding member can be downsized, the resistance of the holding member to the fluid can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of a ball valve.

FIG. 3 is a vertical sectional front view showing a conventional example.

[Explanation of symbols]

 19 Pipeline 20 Fluid inlet 21 Fluid outlet 22 Ball valve 28 Seal ring 31 Discharge port body 34 Check valve 36 Valve seat 37 Rod member 38 Holding member

Claims (2)

[Scope of utility model registration request] 1. A ball valve having a fluid inlet formed at one end and a fluid outlet formed at the other end, rotatably provided with a ball valve for interrupting a flow of a fluid flowing in the pipe, A check valve that is attached to the fluid inlet side of the pipe, a discharge port body is attached to the fluid outlet side of the pipe line, and is opened and closed by fluid pressure in the discharge port body. Is provided slidably and a valve seat on which the check valve is seated is mounted so as to face the fluid outlet, and the check valve is provided with a rod-shaped member that projects toward the inside of the conduit and slides the rod-shaped member. A fluid discharge device using a ball valve, wherein a holding member for movably holding is arranged in the ball valve. 2. A fluid discharge device using a ball valve according to claim 1, wherein the holding member and the valve seat are integrally formed.