CN219242726U

CN219242726U - Piston type pressure reducing valve

Info

Publication number: CN219242726U
Application number: CN202222557636.9U
Authority: CN
Inventors: 张上国; 吴望晨; 房江; 王庆辉
Original assignee: Zhejiang Beihuang Environmental Protection Technology Co ltd
Current assignee: Zhejiang Beihuang Environmental Protection Technology Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-06-23
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses a piston type pressure reducing valve which comprises a valve body, wherein a sleeve is arranged in the valve body, a water inlet and a water outlet communicated with the water inlet are arranged on the sleeve, the water inlet is communicated with the valve body, and a piston mechanism capable of opening or closing the water inlet in a lifting mode is arranged in the sleeve. The utility model has simple structure, can effectively reduce the cost and is easy to maintain later.

Description

Piston type pressure reducing valve

Technical Field

The utility model relates to the technical field of pipeline valves, in particular to a piston type pressure reducing valve.

Background

Because of different water pressures and water hammer effect of civil water, the pressure-bearing member of the water equipment cannot maintain safe and stable pressure-bearing working conditions, and the working conditions of pressure transformation and overload can cause negative influence on the service life and performance of the water equipment. The pressure reducing valves in the prior art compress the plug spring by the action of the pressure behind the valve so as to adjust the opening degree of the opening and closing part, and the pressure behind the valve is kept in a certain range. However, the prior art has the problems of complex structure, more component parts and easy damage due to the pressure regulating function.

Disclosure of Invention

The utility model aims to solve the technical problems and provide the piston type pressure reducing valve which is simple in structure, capable of effectively reducing cost and easy to maintain later.

The technical scheme adopted for solving the technical problems is as follows: a piston type pressure reducing valve comprises a valve body, wherein a sleeve is arranged in the valve body, a water inlet and a water outlet communicated with the water inlet are arranged on the sleeve, the water inlet is communicated with the valve body, and a liftable piston mechanism for opening or closing the water inlet is arranged in the sleeve. When the water pressure or the pressure of the pressure bearing piece arranged below the valve body reaches a proper degree, the water pressure pushes the piston mechanism to move upwards, the top of the piston mechanism is attached to the valve body and blocks the water inlet, and the effect of cutting off the waterway is realized; when the pressure of the water outlet end is reduced, the piston mechanism moves downwards, the water inlet is opened, and the waterway is communicated again. The piston mechanism can be lifted to open or close the water inlet and/or the water outlet.

Preferably, the piston mechanism comprises a piston arranged in the sleeve and a piston sealing ring arranged on the piston, the piston and the sleeve form a sealed cavity through the sealing ring, and the water pressure compresses air in the cavity to lift the piston to close the water inlet or air expansion to push the piston downwards to open the water inlet.

Preferably, the piston comprises a first piston step and a second piston step, the sleeve comprises a first sleeve step and a second sleeve step, the water inlet and the water outlet are formed in the first sleeve step, the first piston step is arranged in the first sleeve step and the second sleeve step in a lifting mode, and the second piston step is arranged in the second sleeve step.

Preferably, the second sleeve step, the first piston step and the second piston step form two closed cavities, and the second piston step can move in the cavities in a lifting manner.

Preferably, the piston seal comprises a first piston seal and a second piston seal, the first piston seal is arranged on the first piston step, and the second piston seal is arranged on the second piston step. The first piston sealing ring, the second piston sealing ring and the sleeve form a closed cavity and have the function of an air spring.

Preferably, a sealing gasket is arranged at the top of the first piston step, and the sealing gasket can open or close the water inlet along with the lifting of the piston. The top of the first piston step is provided with a third groove, the sealing gasket is provided with an inserting part, and the inserting part is inserted into the third groove.

Preferably, a water outlet channel is arranged among the first sleeve step, the second sleeve step and the valve body, a water inlet channel communicated with the water inlet is arranged on the valve body, and water flows out of the valve body after sequentially flowing through the water inlet channel, the water inlet, the water outlet and the water outlet channel.

Preferably, a screw thread is arranged below the valve body. The screw thread is used for being connected with the external connection piece or the pressure-bearing piece conveniently.

Preferably, the first sleeve step, the second sleeve step, the first piston step, and the second piston step are all cylindrical.

Preferably, the first piston step is provided with a first groove, the second piston step is provided with a second groove, the first groove is provided with a first piston sealing ring in a clamping mode, and the second groove is provided with a second piston sealing ring in a clamping mode.

The utility model has the beneficial effects that:

1. the utility model has simple structure, can effectively reduce the cost and is easy to maintain in the follow-up process;

2. according to the utility model, the air spring is formed through the cavity, so that the piston can automatically complete the lifting process according to the outflow water pressure, and the water inlet and the water outlet are controlled according to the water pressure.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

Fig. 2 is a cross-sectional view taken along A-A of fig. 1.

Fig. 3 is a schematic view of the structure of the valve body removed according to the present utility model.

Fig. 4 is a schematic view of the piston mechanism of the present utility model.

Fig. 5 is a schematic view of the structure of the gasket of the present utility model.

In the figure: 1. the valve body, 2, the sealing gasket, 21, the insertion part, 3, the piston, 31, the first piston step, 32, the second piston step, 33, the first groove, 34, the second groove, 35, the third groove, 4, the first piston sealing ring, 5, the sleeve, 51, the first sleeve step, 52, the second sleeve step, 53, the water inlet, 54, the water outlet, 6, the second piston sealing ring, 7, the water inlet channel, 8, the screw thread, 9, the water outlet channel, 10, the cavity,

Detailed Description

The utility model is further described below with reference to the drawings and embodiments.

As shown in fig. 1-5, the piston type pressure reducing valve comprises a valve body 1, wherein a sleeve 5 is arranged in the valve body 1, a water inlet 53 and a water outlet 54 communicated with the water inlet 53 are arranged on the sleeve 5, the water inlet 53 is communicated with the valve body 1, and a piston mechanism capable of opening or closing the water inlet 53 in a lifting mode is arranged in the sleeve 5.

The piston mechanism comprises a piston 3 arranged in a sleeve 5 and a piston sealing ring arranged on the piston 3, wherein the piston 3 and the sleeve 5 form a sealed cavity 10 through the sealing ring, and the water pressure compresses air in the cavity 10 to lift the piston 3 to close the water inlet 53 or expands air to push the piston 3 downwards to open the water inlet 53.

The piston 3 comprises a first piston step 31 and a second piston step 32, the sleeve 5 comprises a first sleeve step 51 and a second sleeve step 52, the water inlet 53 and the water outlet 54 are respectively arranged on the first sleeve step 51, the first piston step 31 is arranged in the first sleeve step 51 and the second sleeve step 52 in a lifting manner, and the second piston step 32 is arranged in the second sleeve step 52.

The second sleeve step 52, the first piston step 31 and the second piston step 32 form two closed cavities 10, and the second piston step 32 can move in the cavities 10 in a lifting manner.

The plug seal ring comprises a first piston seal ring 4 and a second piston seal ring 6, wherein the first piston seal ring 4 is arranged on a first piston step 31, and the second piston seal ring 6 is arranged on a second piston step 32.

The top of the first piston step 31 is provided with a sealing gasket 2, and the sealing gasket 2 can open or close the water inlet 53 along with the lifting of the piston 3. The top of the first piston step 31 is provided with a third groove 35, and the gasket 2 is provided with an insertion portion 21, and the insertion portion 21 is inserted into the third groove 35.

A water outlet channel 9 is arranged between the first sleeve step 51, the second sleeve step 52 and the valve body 1, a water inlet channel 7 communicated with the water inlet 53 is arranged on the valve body 1, and water flows out of the valve body 1 after sequentially flowing through the water inlet channel 7, the water inlet 53, the water outlet 54 and the water outlet channel 9

The first sleeve step 51, the second sleeve step 52, the first piston step 31, and the second piston step 32 are all cylindrical.

The first piston step 31 is provided with a first groove 33, the second piston step 32 is provided with a second groove 34, the first groove 33 is provided with a first piston sealing ring 4 in a clamping manner, and the second groove 34 is provided with a second piston sealing ring 6 in a clamping manner.

A thread 8 is arranged below the valve body 1.

In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A piston type pressure reducing valve, characterized in that: the valve comprises a valve body (1), wherein a sleeve (5) is arranged in the valve body (1), a water inlet (53) and a water outlet (54) communicated with the water inlet (53) are arranged on the sleeve (5), the water inlet (53) is communicated with the valve body (1), and a piston mechanism capable of opening or closing the water inlet (53) in a lifting mode is arranged in the sleeve (5).

2. The piston pressure relief valve as claimed in claim 1, wherein: the piston mechanism comprises a piston (3) arranged in the sleeve (5) and a piston sealing ring arranged on the piston (3), the piston (3) and the sleeve (5) form a sealed cavity (10) through the sealing ring, the water pressure compresses air in the cavity (10) to lift the piston (3) to close the water inlet (53) or the air expansion pushes the piston (3) downwards to open the water inlet (53).

3. The piston pressure relief valve as claimed in claim 2, wherein: the piston (3) comprises a first piston step (31) and a second piston step (32), the sleeve (5) comprises a first sleeve step (51) and a second sleeve step (52), the water inlet (53) and the water outlet (54) are formed in the first sleeve step (51), the first piston step (31) is arranged in the first sleeve step (51) and the second sleeve step (52) in a lifting mode, and the second piston step (32) is arranged in the second sleeve step (52).

4. A piston pressure relief valve as claimed in claim 3, wherein: the second sleeve step (52), the first piston step (31) and the second piston step (32) form two closed cavities (10), and the second piston step (32) can move in the cavities (10) in a lifting manner.

5. The piston pressure relief valve as claimed in claim 4, wherein: the plug sealing ring comprises a first piston sealing ring (4) and a second piston sealing ring (6), the first piston sealing ring (4) is arranged on the first piston step (31), and the second piston sealing ring (6) is arranged on the second piston step (32).

6. The piston pressure relief valve as claimed in claim 5, wherein: the top of the first piston step (31) is provided with a sealing gasket (2), and the sealing gasket (2) can lift along with the piston (3) to open or close the water inlet (53).

7. The piston pressure reducing valve according to claim 3 or 4 or 5 or 6, wherein: a water outlet channel (9) is arranged between the first sleeve step (51), the second sleeve step (52) and the valve body (1), a water inlet channel (7) communicated with the water inlet (53) is arranged on the valve body (1), and water flows through the water inlet channel (7), the water inlet (53), the water outlet (54) and the water outlet channel (9) in sequence and then flows out of the valve body (1).

8. The piston pressure relief valve as claimed in claim 7, wherein: the first sleeve step (51), the second sleeve step (52), the first piston step (31) and the second piston step (32) are all cylindrical.

9. The piston pressure relief valve as claimed in claim 8, wherein: the first piston step (31) is provided with a first groove (33), the second piston step (32) is provided with a second groove (34), the first groove (33) is provided with a first piston sealing ring (4), and the second groove (34) is provided with a second piston sealing ring (6).

10. The piston pressure relief valve as claimed in claim 1, wherein: threads (8) are arranged below the valve body (1).