CN211288875U

CN211288875U - Adjustable pressure reducing valve

Info

Publication number: CN211288875U
Application number: CN201921872137.0U
Authority: CN
Inventors: 杨建宁
Original assignee: Ningbo Tianhu Valve Technology Co ltd
Current assignee: Ningbo Tianhu Valve Technology Co ltd
Priority date: 2019-11-02
Filing date: 2019-11-02
Publication date: 2020-08-18
Anticipated expiration: 2029-11-02

Abstract

The utility model discloses an adjustable pressure reducing valve, which comprises a valve body, a valve seat, a valve rod, a valve clack component, a diaphragm seat, a valve cover, a diaphragm and the like, wherein a first connecting pipe which is communicated with each other is arranged between the outlet end of the valve body and an upper cavity which is separated by the diaphragm, and an overhaul ball valve and a pilot valve which are sequentially connected in series from the outlet end to the upper cavity and are arranged on the first connecting pipe; the valve body is provided with a second connecting pipe communicated with the outlet end, a three-way pipe, a ball valve and a pressure gauge which are sequentially connected in series and arranged on the second connecting pipe, and the three-way pipe is also communicated with a soft joint ball valve. Therefore, once the problem of the sealing surface of the valve needs to be overhauled and judged, the problem of the sealing surface of the valve can be accurately judged only by closing the overhauling ball valves on the outlet end and the first connecting pipe and then opening the soft joint ball valve to drain water; and adopt above-mentioned structure to make the flexible joint ball valve only need emit between sealed face and the exit end few retaining can, so both reduced the time of draining, avoided causing the excessive waste of water resource, can not influence again and overhaul the judgement.

Description

Adjustable pressure reducing valve

Technical Field

The utility model relates to a relief pressure valve specifically indicates a relief pressure valve with adjustable.

Background

As is well known, a pressure reducing valve generally comprises a valve body, a valve seat, a valve rod, a valve flap assembly, a diaphragm seat, a valve cover, a diaphragm, a spring, and the like, and the working principle of the pressure reducing valve is as follows: when the outlet end of the valve body is closed, high-pressure water at the inlet end of the valve body enters the upper cavity, the pressure in the upper cavity is gradually increased, and then the membrane and the valve rod are driven to move downwards to push the valve clack assembly to be in sealing contact with the valve seat, namely the valve is closed; when the outlet end of the valve body is opened, the pressure in the upper cavity is gradually reduced, the high-pressure water at the inlet end of the valve body drives the valve clack assembly, the valve rod and the diaphragm to move upwards, and then the valve clack assembly is separated from the valve seat, namely the valve is opened. When the pressure reducing valve is overhauled, water needs to be discharged from the outlet end, if garbage or parts on a sealing surface of the valve clack assembly contacted with the valve seat are damaged, the valve cannot be closed, and water at the outlet end cannot be discharged all the time, which indicates that the valve is sealed. However, the pressure reducing valve with the traditional structure is often connected with a long pipeline after the outlet end, water storage is more, and the water needs to be kept for a long time when the water is drained during maintenance, so that precious water resources are wasted, and maintenance judgment is influenced.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art's defect and provide one kind and can reduce the time of draining, avoid causing the waste of water resource when the maintenance of draining, can not influence the relief pressure valve with adjustable that overhauls the judgement again.

The technical problem of the utility model is realized through following technical scheme:

an adjustable pressure reducing valve comprises a valve body with an inlet end and an outlet end, a valve seat and a valve rod which are arranged in the valve body, a diaphragm seat which is arranged at the top of the valve body in a sealing way, and a valve cover which is arranged at the top of the diaphragm seat in a sealing way; a diaphragm is arranged between the diaphragm seat and the valve cover, and the diaphragm divides the space between the diaphragm seat and the valve cover into an upper cavity and a lower cavity; the upper end of the valve rod movably penetrates through the diaphragm seat to be fixed with the diaphragm, the lower end of the valve rod is provided with the valve clack assembly, the valve rod is sleeved with a spring, two ends of the spring are respectively and elastically pushed on the valve clack assembly and the diaphragm seat, a first connecting pipe communicated with each other is arranged between the outlet end and the upper cavity, and the first connecting pipe is provided with an inspection ball valve and a pilot valve which are sequentially connected in series from the outlet end to the upper cavity; the valve body is provided with a second connecting pipe communicated with the outlet end, the second connecting pipe is provided with a three-way pipe, a ball valve and a pressure gauge which are sequentially connected in series, and the three-way pipe is additionally communicated with and provided with a soft joint ball valve.

The valve body is provided with an outlet through hole communicated with the outlet end, the valve cover is provided with a first top hole communicated with the upper cavity, and two ends of the first connecting pipe are respectively connected with the outlet through hole and the first top hole; the second connecting pipe is also connected with the outlet through hole.

A third connecting pipe communicated with each other is arranged between the inlet end and the upper cavity, and a filter and a needle valve which are sequentially installed in series from the inlet end to the upper cavity are arranged on the third connecting pipe; the valve body is provided with a fourth connecting pipe communicated with the inlet end, and the fourth connecting pipe is provided with a ball valve and a pressure gauge which are sequentially installed in series.

The valve body is provided with an inlet through hole communicated with the inlet end, the valve cover is provided with a second top hole communicated with the upper cavity, and two ends of the third connecting pipe are respectively connected with the inlet through hole and the second top hole; the fourth connecting pipe is also connected with the inlet through hole.

The soft joint ball valve is externally connected with a water outlet hose.

The inlet end of the valve body is provided with an inlet opening and closing valve which is installed adjacently, the outlet end of the valve body is provided with an outlet opening and closing valve which is installed adjacently, and the inlet opening and closing valve and the outlet opening and closing valve are gate valves or butterfly valves.

Compared with the prior art, the utility model is mainly characterized in that a first connecting pipe which is mutually communicated is arranged between the outlet end of the valve body and the upper cavity, and an inspection ball valve and a pilot valve which are sequentially connected in series from the outlet end to the upper cavity and are arranged on the first connecting pipe; the valve body is provided with a second connecting pipe communicated with the outlet end, a three-way pipe, a ball valve and a pressure gauge which are sequentially connected in series and arranged on the second connecting pipe, and the three-way pipe is additionally communicated with and provided with a soft joint ball valve. Therefore, once the problem of the sealing surface of the valve needs to be overhauled and judged, the problem of the sealing surface of the valve can be accurately judged only by closing the overhauling ball valves on the outlet end and the first connecting pipe and then opening the soft joint ball valve to drain water; and adopt above-mentioned structure to make the flexible joint ball valve only need emit sealed face and exit end between little retaining can, that is to say the flexible joint ball valve only need the drainage of very short time just can judge, so both reduced the time of draining, avoided causing the excessive waste of water resource, can not influence again and overhaul the judgement.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

Fig. 2 is a schematic view of an application structure of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in the figures 1 and 2, the valve flap assembly comprises a valve flap assembly 1, a valve seat 2, a valve body 3, a valve body 31, an inlet through hole 32, an outlet through hole 33, an inlet end 34, an outlet end, a valve rod 4, a spring 5, a diaphragm seat 6, a diaphragm 7, a diaphragm 8, a diaphragm pressing plate 9, a valve cover 91, a first top hole 92, a second top hole 93, an upper cavity 94, a lower cavity 10, a first connecting pipe 11, a second connecting pipe 11, a third connecting pipe 12, a fourth connecting pipe 13, a maintenance ball valve 14, a pilot valve 15, a three-way pipe 16, a ball valve 17, a pressure gauge 18, a soft joint ball valve 19, a water outlet hose 20, a filter 21, a needle valve 22, an inlet opening and closing valve 23, and an outlet opening and closing valve 24.

The structure of the adjustable pressure reducing valve is shown in figure 1, and the adjustable pressure reducing valve mainly comprises a valve body 3, a valve seat 2 and a valve rod 4 which are arranged in the valve body, a diaphragm seat 6 which is hermetically arranged at the top of the valve body 3, a valve cover 9 which is hermetically arranged at the top of the diaphragm seat and the like.

The valve body 3 has an inlet end 33 and an outlet end 34, and as shown in fig. 2, an inlet opening and closing valve 23 is adjacently installed at the inlet end 33, and an outlet opening and closing valve 24 is adjacently installed at the outlet end 34, and the inlet opening and closing valve 23 and the outlet opening and closing valve 24 can be gate valves or butterfly valves.

The valve seat 2 is hermetically arranged at a water through hole in the valve body 3, and the valve rod 4 is arranged above the valve seat 2 and can move up and down; a diaphragm 7 is arranged between the diaphragm seat 6 and the valve cover 9, and the diaphragm divides the space between the diaphragm seat 6 and the valve cover 9 into an upper cavity 93 and a lower cavity 94; the upper end of the valve rod 4 movably penetrates through the diaphragm seat 6 in a sealing mode and then is fixed with the diaphragm 7 through the diaphragm pressing plate 8, the lower end of the valve rod 4 is provided with the valve clack component 1, the valve rod 4 is sleeved with the spring 5, and two ends of the spring elastically push the valve clack component 1 and the diaphragm seat 6 respectively.

The valve body 3 is provided with an inlet through hole 31 communicated with the inlet end 33 and an outlet through hole 32 communicated with the outlet end 34, and the valve cover 9 is provided with a first top hole 91 and a second top hole 92 communicated with the upper cavity 93.

A third connecting pipe 12 communicated with each other is arranged between the inlet end 33 and the upper chamber 93, specifically, two ends of the third connecting pipe 12 are respectively connected with the inlet through hole 31 and the second top hole 92, and the third connecting pipe 12 is provided with a filter 21 and a needle valve 22 which are sequentially installed in series from the inlet end 33 to the upper chamber 93; the valve body 3 is also provided with a fourth connecting pipe 13 communicated with the inlet end 33, specifically, the fourth connecting pipe is also connected with the inlet through hole 31, and the fourth connecting pipe 13 is provided with a ball valve 17 and a pressure gauge 18 which are sequentially installed in series.

Meanwhile, a first connecting pipe 10 communicated with each other is arranged between the outlet end 34 and the upper cavity 93, specifically, two ends of the first connecting pipe 10 are respectively connected with the outlet through hole 32 and the first top hole 91, the first connecting pipe 10 is provided with a maintenance ball valve 14 and a pilot valve 15 which are sequentially and serially arranged from the outlet end 34 to the upper cavity 93, and the pilot valve has the function of adjusting the pressure of the outlet end 34 to be 0.15 MPa-1.0 MPa; the valve body 3 is also provided with a second connecting pipe 11 communicated with the outlet end 34, specifically, the second connecting pipe 11 is also connected with an outlet through hole 32, the second connecting pipe 11 is provided with a three-way pipe 16, a ball valve 17 and a pressure gauge 18 which are sequentially connected in series, the three-way pipe is additionally communicated with and provided with a soft joint ball valve 19, and the soft joint ball valve is externally connected with a water outlet hose 20.

The working principle of the adjustable pressure reducing valve is as follows: when the outlet opening and closing valve 24 is closed, the pilot valve 15 is closed first, the high-pressure water at the inlet end 33 enters the upper chamber 93 of the pressure reducing valve, the pressure in the upper chamber is gradually increased, the diaphragm pressing plate 8 pushes the valve clack assembly 1 to move downwards to be close to the valve seat 2 through the valve rod 4, and finally the valve clack assembly 1 and the valve seat 2 are in sealing contact, namely the valve is closed.

When the outlet open-close valve 24 is opened, the pilot valve 15 is also automatically opened, the pressure in the upper chamber 93 of the pressure reducing valve is gradually reduced, the valve clack assembly 1 is pushed by the high-pressure water at the inlet end 33 through the valve rod 4 to move the diaphragm pressing plate 8 upwards, and the valve clack assembly 1 is separated from the valve seat 2, namely the opening of the valve is realized.

When the adjustable pressure reducing valve needs to be overhauled and the sealing problem is judged, only the overhauling ball valve 14 and the outlet opening and closing valve 24 on the first connecting pipe 10 need to be closed, the soft joint ball valve 19 is opened to discharge water, the distance from the sealing surface to the outlet opening and closing valve 24 is short, the water storage capacity is low, the soft joint ball valve 19 can be quickly discharged, the problem of the sealing of the valve can be judged, and the water discharging time and the water saving resource are greatly reduced.

That is, if water can be discharged in a short time, the sealing performance is reliable; if water drainage is not finished for a long time, sealing has a problem; the soft joint ball valve 19 can guide water into a drainage groove through an external water outlet hose 20 when water is discharged, so that water flow is prevented everywhere.

In addition, when the pressure reducing valve regulates pressure, the outlet opening and closing valve 24 needs to be closed, the soft joint ball valve 19 needs to be opened, and then the pressure regulating screw on the pilot valve 15 needs to be adjusted.

The above description is only an embodiment of the present invention, and it should be understood by those skilled in the art that any structural design equivalent to this embodiment is included in the scope of the present invention.

Claims

1. An adjustable pressure reducing valve comprises a valve body (3) with an inlet end (33) and an outlet end (34), a valve seat (2) and a valve rod (4) which are arranged in the valve body, a diaphragm seat (6) which is arranged at the top of the valve body (3) in a sealing way, and a valve cover (9) which is arranged at the top of the diaphragm seat in a sealing way; a diaphragm (7) is arranged between the diaphragm seat (6) and the valve cover (9), and the diaphragm divides the space between the diaphragm seat (6) and the valve cover (9) into an upper cavity (93) and a lower cavity (94); the valve is characterized in that a first connecting pipe (10) communicated with each other is arranged between the outlet end (34) and the upper cavity (93), and the first connecting pipe is provided with an inspection ball valve (14) and a pilot valve (15) which are sequentially installed in series from the outlet end (34) to the upper cavity (93) in the direction; the valve body (3) is provided with a second connecting pipe (11) communicated with the outlet end (34), the second connecting pipe is provided with a three-way pipe (16), a ball valve (17) and a pressure gauge (18) which are sequentially connected in series, and the three-way pipe (16) is additionally communicated with and provided with a soft joint ball valve (19).

2. The adjustable pressure reducing valve according to claim 1, wherein the valve body (3) is provided with an outlet through hole (32) communicated with the outlet end (34), the valve cover (9) is provided with a first top hole (91) communicated with the upper cavity (93), and two ends of the first connecting pipe (10) are respectively connected with the outlet through hole (32) and the first top hole (91); the second connecting pipe (11) is also connected with the outlet through hole (32).

3. The adjustable pressure reducing valve according to claim 1, wherein a third connecting pipe (12) communicated with each other is arranged between the inlet end (33) and the upper chamber (93), and the third connecting pipe is provided with a filter (21) and a needle valve (22) which are sequentially arranged in series from the inlet end (33) to the upper chamber (93); the valve body (3) is provided with a fourth connecting pipe (13) communicated with the inlet end (33), and the fourth connecting pipe is provided with a ball valve (17) and a pressure gauge (18) which are sequentially installed in series.

4. The adjustable pressure reducing valve according to claim 3, wherein the valve body (3) is provided with an inlet through hole (31) communicated with the inlet end (33), the valve cover (9) is provided with a second top hole (92) communicated with the upper cavity (93), and two ends of the third connecting pipe (12) are respectively connected with the inlet through hole (31) and the second top hole (92); the fourth connecting pipe (13) is also connected with the inlet through hole (31).

5. The adjustable pressure reducing valve as claimed in claim 1, wherein the flexible joint ball valve (19) is externally connected with a water outlet hose (20).

6. An adjustable pressure reducing valve according to claim 1, characterized in that the inlet end (33) of the valve body is provided with an adjacently mounted inlet opening and closing valve (23), and the outlet end (34) is provided with an adjacently mounted outlet opening and closing valve (24), the inlet opening and closing valve (23) and the outlet opening and closing valve (24) being gate valves or butterfly valves.