CN203585396U - Plug valve for water-eliminating hammer - Google Patents

Abstract

The utility model discloses a plug valve for a water-eliminating hammer. The plug valve for the water-eliminating hammer is composed of a valve body, a valve cover, a plug, a valve rod and a bidirectional valve body, wherein the valve body is fixedly connected with the valve cover by a bolt; the plug is arranged in the valve body; a channel is formed in the plug, and a bidirectional valve is arranged in the channel; one end of the bidirectional valve is installed on a support disc on the inlet end of the channel, and the other end of the bidirectional valve is used for fixing the bidirectional valve body in the plug by a bolt. When the plug rotates 90 degrees, a medium flows in from a medium inlet, flows through a plug inlet, and pushes a valve core end cover, a return spring shrinks due to extrusion, thus the valve core end cover continues to be stressed to open a valve body through hole, the medium flows out from the valve body through hole and then flows in the channel, and the medium in the channel flows towards a medium outlet from a plug outlet; when the plug rotates 90 degrees again, the plug inlet is in a closed state, the medium flows back, and flows through a valve core through hole in the valve core end cover, a baffle is pushed by a backflow pressure, thus a valve core spring is returned to buffer the backflow pressure of the medium. The plug valve for the water-eliminating hammer disclosed by the utility model has the advantages of being good in waterproof hammer effect, capable of reducing noise, and long in service life.

Description

Water hammer plug valve

technical field

The utility model relates to a cock valve, in particular to a water hammer cock valve.

Background technique

In the valve industry, the water hammer phenomenon often occurs. The water hammer phenomenon will cause overpressure or negative pressure of the water flow in the pipeline, generate huge noise and damage components, and bring great losses and troubles in work and maintenance.

Utility model content

The purpose of the utility model is to provide a water hammer eliminating cock valve. The utility model has a good effect of preventing the water hammer, reduces noise and has a long service life.

The utility model adopts following technical scheme:

The water hammer cock valve consists of a valve body, a bonnet, a cock, a valve stem and a two-way valve body.

The valve body and the valve cover are fixedly connected by bolts. There is a cock in the valve body. There is a channel in the cock. There is a two-way valve in the channel. The valve body is fixed in the cock, and a return spring is installed in the two-way valve body, and the return spring is fixed to the two-way valve body through the end cover of the valve core; one end of the valve core spring is fixed on the valve core through a gasket, and the other end is Closely attached to the end cover of the spool; one end of the spool is connected to a stopper, the stopper is integrated with the spool, and there is a cylindrical groove in the middle of the stopper, the end cover of the spool can be embedded in the cylindrical groove, and the spool There is a sealing gasket between the end cover and the two-way valve body.

A valve core through hole is opened on the valve core end cover, a valve body through hole is opened on the two-way valve body, and a passage is provided between the cock and the two-way valve body.

When the cock rotates 90 degrees, the medium flows in from the medium inlet, flows through the cock inlet, pushes the end cover of the valve core, and the return spring is squeezed and shrinks, so that the end cover of the valve core continues to be pressurized to open the through hole of the valve body, and the medium flows from the valve body After the through hole flows out, it flows into the channel, and the medium in the channel flows from the cock outlet to the medium outlet.

When the cock rotates another 90 degrees, the cock inlet is closed, and the medium flows back through the spool through hole on the spool end cover. The reflux pressure pushes the stopper to reset the spool spring and buffer the medium reflux pressure.

The utility model has the advantages of good waterproof hammer effect, reduced noise and long service life.

Description of drawings

Fig. 1 is a schematic diagram of a full-section structure of the utility model.

Among them: 1. Valve body, 2. Bonnet, 3. Valve stem, 4. Cock, 5. Bolt, 6. Two-way valve body, 61. Valve body through hole, 7. Return spring, 8. Spool spring, 9. gasket, 10. spool, 11. spool end cover, 12. block, 13. sealing washer, 14. spool through hole, 15 channel, 131. medium inlet, 132. medium outlet.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figure 1 of the utility model, the water hammer cock valve is composed of a valve body 1, a valve cover 2, a valve stem 3, a cock 4 and a two-way valve body 6.

The valve body 1 and the valve cover 2 are fixedly connected by bolts. There is a cock 4 in the valve body 1. There is a channel in the cock 4. There is a two-way valve in the channel. One end of the two-way valve is placed on the support plate on the inlet end of the channel. The other end fixes the two-way valve body 6 in the cock 4 through the bolt 5, and a return spring 7 is arranged in the two-way valve body 6, and the back spring 7 is fixed to the two-way valve body 6 through the valve core end cover 11; One end of the spring 8 is fixed on the spool 10 by a gasket 9, and the other end is in close contact with the spool end cover 11; one end of the spool 10 is connected with a stopper 12, and the stopper 12 is integrated with the spool 10, so that There is a cylindrical groove in the middle of the block 12, the valve core end cover 11 can be embedded in the cylindrical groove, and a sealing gasket 13 is arranged between the valve core end cover 11 and the two-way valve body 6.

The spool end cover 11 is provided with a spool through hole 14 , the two-way valve body 6 is provided with a valve body through hole 61 , and a channel 15 is provided between the cock 4 and the two-way valve body 6 .

When the cock 4 rotates 90 degrees, the medium flows in from the medium inlet 131, flows through the inlet of the cock 4, pushes the valve core end cover 11, and the return spring 7 is squeezed and shrinks, so that the valve core end cover 11 continues to be pressurized and the valve body passes through the hole. 61 is opened, the medium flows out from the through hole 15 of the valve body and then flows into the channel 15, and the medium in the channel 15 flows from the cock outlet to the medium outlet 132.

When the cock 4 rotates another 90 degrees, the inlet of the cock 4 is closed, and the medium flows back through the spool through hole 14 on the spool end cover 11. The backflow pressure pushes the stopper 12 to reset the spool spring 8 and buffer the medium. return pressure.

Claims (1)

1. The water hammer cock valve consists of a valve body (1), a valve cover (2), a valve stem (3), a cock (4) and a two-way valve body (6), and is characterized in that: the valve body ( 1) It is fixedly connected with the valve cover (2) by bolts. There is a cock (4) in the valve body (1). There is a channel in the cock (4), and there is a two-way valve in the channel. One end of the two-way valve is placed on the inlet end of the channel. On the supporting plate, the other end fixes the two-way valve body (6) in the cock (4) through the bolt (5), and a return spring (7) is arranged in the two-way valve body (6), and the return spring (7) passes through The spool end cover (11) is fixed to the two-way valve body (6); one end of the spool spring (8) is fixed on the spool (10) through a gasket (9), and the other end is fixed to the spool end cover (11) close to; one end of the spool (10) is connected to the stopper (12), the stopper (12) is integrated with the spool (10), and there is a cylindrical groove in the middle of the stopper (12), the valve The core end cover (11) can be embedded in the cylindrical groove, and there is a sealing gasket (13) between the valve core end cover (11) and the two-way valve body (6); The valve core through hole (14), the two-way valve body (6) has a valve body through hole (61), and a passage (15) is provided between the cock (4) and the two-way valve body (6).

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