CN214743577U

CN214743577U - Pressure reducing valve with automatic opening and closing function

Info

Publication number: CN214743577U
Application number: CN202120190460.0U
Authority: CN
Inventors: 王超; 李云; 杨春来
Original assignee: Cuilian China Fire Fighting Equipment Manufacturing Co ltd
Current assignee: Cuilian China Fire Fighting Equipment Manufacturing Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-11-16
Anticipated expiration: 2031-01-22

Abstract

The utility model relates to the technical field of valves, especially a relief pressure valve with automatic start-stop function, including relief pressure valve body, inlet tube and outlet pipe, this internal entrance point, main valve control room and the exit end of being equipped with of relief pressure valve, wherein, the inlet connection of inlet tube and relief pressure valve body, the outlet pipe is connected with the exit end of relief pressure valve body, the inlet tube with the outlet pipe passes through the main valve control room intercommunication of relief pressure valve body, be equipped with the pilot valve on the outlet pipe, the pilot valve includes the casing and sets up the case subassembly in the casing, the case subassembly is used for keeping the exit end water pressure stability of relief pressure valve body through the latus rectum of automatically regulated pilot valve, has solved current relief pressure valve, needs the latus rectum of manual operation pressure regulating pipeline, and the amount of labour is big, uses uneconomic problem.

Description

Pressure reducing valve with automatic opening and closing function

Technical Field

The utility model relates to the technical field of valves, especially a relief pressure valve with automatic start-stop function.

Background

The pressure reducing valve is installed in a water system pipeline, the pressure ratio of a water supply cavity and a working cavity pipe is adjusted through the cooperation of a manual gate valve and a pressure gauge according to working requirements, the water pressure in the pipeline is kept stable, the pressure reducing valve has the advantages of stable and reliable operation, the pressure of the working cavity can be kept unchanged, the structure is simple, the weight is light, the operation and maintenance are convenient, the rated working pressure is 1.6Mpa, the horizontal and vertical installation can be realized, and the like, but in the using process, when the pressure gauge detects that the output pressure of the pressure reducing valve is higher or the drift diameter is larger, the drift diameter of the pipeline needs to be adjusted through the manual gate valve, the purpose of stabilizing the water pressure of a water outlet pipe is achieved, the labor amount of manual operation is large in the whole process, and the use is not economical.

In summary, there is a need for a pressure reducing valve with automatic opening and closing function

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: aiming at the problems that the prior pressure reducing valve needs manual operation of the drift diameter of a pressure regulating pipeline, has large labor capacity and is uneconomical to use, the pressure reducing valve with the automatic opening and closing function is provided.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a relief pressure valve with automatically, opens and close function, includes relief pressure valve body, inlet tube and outlet pipe, this internal entrance point, main valve control room and the exit end of being equipped with of relief pressure valve, wherein, the inlet connection of inlet tube and relief pressure valve body, the outlet pipe is connected with the exit end of relief pressure valve body, the inlet tube with the outlet pipe passes through the main valve control room intercommunication of relief pressure valve body, be equipped with the pilot valve on the outlet pipe, the pilot valve includes the casing and sets up the case subassembly in the casing, the case subassembly is used for keeping the exit end water pressure stability of relief pressure valve body through the latus rectum of automatically regulated pilot valve.

When water pressure rises, the valve core assembly automatically increases the drift diameter of the pilot valve under the action of water pressure, and the purpose of reducing the water pressure of the water outlet pipe by increasing the water flow of the water outlet pipe is achieved; when water pressure reduces, the case subassembly is under hydraulic effect, the latus rectum of automatic reduction pilot valve, realize the discharge through reducing the outlet pipe, it is hydraulic purpose to reach to increase the outlet pipe, this device simple structure, under the effect that water pressure changes, through the latus rectum of case subassembly automatically regulated pilot valve, and then change the discharge in the outlet pipe, and then the water pressure that keeps the exit end of relief pressure valve body automatically is stable, current relief pressure valve has been solved, the latus rectum that needs manual operation pressure regulating pipeline, the amount of labour is big, use uneconomical problem.

Preferably, the casing includes safety cover, valve gap and valve body, the both ends of valve gap can be dismantled with safety cover and valve body respectively and be connected. The valve core assembly in the shell is convenient to overhaul and replace.

Preferably, the valve core assembly comprises a diaphragm and a pressurizing spring, the diaphragm is arranged between the valve cover and the valve body, the diaphragm and the valve cover enclose to form a main valve control cavity, and the pressurizing spring is arranged in the main valve control cavity; the top of the pressurizing spring is provided with an adjusting bolt, and the adjusting bolt is in threaded engagement with the protective cover and is used for adjusting the elasticity of the pressurizing spring; a valve rod is mounted at the bottom of the pressurizing spring, penetrates through the diaphragm, a sealing block is mounted at the tail end of the valve rod, a plug is arranged on the valve body, and a positioning block is arranged in the plug; the sealing block is matched with the positioning block and used for adjusting the drift diameter of the pilot valve. Compress the pressure spring through bolt and safety cover thread engagement extrusion and take place deformation, make the pressure spring produce the elasticity that resumes deformation, the valve rod that the elasticity of punching press spring can drive the bottom removes, when water pressure is greater than punching press spring's elasticity, rivers compress the punching press spring through the extrusion diaphragm, the punching press spring shrink, make the valve rod drive the direction removal that the locating piece was kept away from to the sealed piece orientation, thereby increase the latus rectum of pilot valve, reduce the water pressure in the play water pipe, when water pressure is less than punching press spring's elasticity, the spring is under the effect of the deformation power of resuming, make the valve rod drive the sealed piece orientation and remove near the direction of locating piece, thereby reduce the latus rectum of pilot valve, increase the water pressure in the play water pipe, thereby reach the stable purpose of water pressure that keeps the exit end of relief pressure valve body.

Preferably, be equipped with first manual gate valve on the inlet tube, first manual gate valve is used for opening and close the inlet tube, still be equipped with first pressure detection table on the inlet tube, first pressure detection table is used for detecting the water pressure in the inlet tube. But through the water pressure of first pressure detection table monitoring intake pipe, through be equipped with first manual gate valve on the inlet tube, close first manual gate valve, the convenient maintenance to inlet tube back end pipeline or instrument.

Preferably, a second manual gate valve is arranged on the water outlet pipe and used for opening and closing the water outlet pipe, and a second pressure detection meter is further arranged on the water outlet pipe and used for detecting the water pressure in the water outlet pipe. The water pressure in the water outlet pipe can be monitored through the second pressure detection meter, and the second manual gate valve is closed through the second manual gate valve arranged on the water outlet pipe, so that the pipeline or the instrument at the rear section of the water outlet pipe can be conveniently overhauled.

Preferably, a first spring pressure pad is arranged between the pressurizing spring and the adjusting bolt. The bolt is beneficial to abutting against the pressurizing spring.

Preferably, a second spring pressure pad is further arranged between the bolt and the valve rod, a diaphragm pressure pad is further arranged between the second spring pressure pad and the valve rod, and the diaphragm is located between the diaphragm pressure pad and the valve rod.

Preferably, the protective cover is in threaded connection with the valve cover, and the valve cover is in bolted connection with the valve body. The installation and the disassembly of the protective cover, the valve cover and the valve body are convenient.

Compared with the prior art, the utility model has the advantages of: when water pressure rises, the valve core assembly automatically increases the drift diameter of the pilot valve under the action of water pressure, and the purpose of reducing the water pressure of the water outlet pipe by increasing the water flow of the water outlet pipe is achieved; when water pressure reduces, the case subassembly is under hydraulic effect, the latus rectum of automatic reduction pilot valve, realize the discharge through reducing the outlet pipe, it is hydraulic purpose to reach to increase the outlet pipe, this device simple structure, under the effect that water pressure changes, through the latus rectum of case subassembly automatically regulated pilot valve, and then change the discharge in the outlet pipe, and then the water pressure that keeps the exit end of relief pressure valve body is stable, current relief pressure valve has been solved, the latus rectum that needs manual operation pressure regulating pipeline, the amount of labour is big, use uneconomical problem.

Other beneficial effects of this application are:

1. through adjusting bolt and safety cover threaded engagement extrusion pressurizing spring take place deformation, make pressurizing spring produce the elasticity that resumes deformation, the valve rod that the elasticity of punching press spring can drive the bottom removes, when water pressure is greater than punching press spring's elasticity, rivers compress punching press spring through the extrusion diaphragm, punching press spring shrink, make the valve rod drive the direction removal that the locating piece was kept away from to the sealed piece orientation, thereby increase the latus rectum of pilot valve, reduce the water pressure in the play water pipe, when water pressure is less than punching press spring's elasticity, the spring is under the effect of the deformation power that resumes, make the valve rod drive the sealed piece orientation and remove near the direction of locating piece, thereby reduce the latus rectum of pilot valve, increase the water pressure in the play water pipe, thereby reach the purpose that the water pressure stability of the exit end that keeps relief pressure valve body.

2. But through the water pressure of first pressure detection table monitoring intake pipe, through be equipped with first manual gate valve on the inlet tube, close first manual gate valve, the convenient maintenance to inlet tube back end pipeline or instrument.

3. The water pressure in the water outlet pipe can be monitored through the second pressure detection meter, and the second manual gate valve is closed through the second manual gate valve arranged on the water outlet pipe, so that the pipeline or the instrument at the rear section of the water outlet pipe can be conveniently overhauled.

Drawings

Fig. 1 is a schematic structural view of a pressure reducing valve with an automatic opening and closing function according to the present invention;

FIG. 2 is a schematic structural view of a pressure reducing valve body;

FIG. 3 is a schematic structural diagram of a pilot valve;

FIG. 4 is a schematic diagram of another view of a pilot valve.

In the drawings, reference numerals

The pressure reducing valve comprises a pressure reducing valve body 1, a pressure reducing valve body 1a inlet end 1b main valve control chamber 1c outlet end 2 water inlet pipe 3 water outlet pipe 4 pilot valve 4a shell 4a protective cover 4a1 valve 4a2 valve cover 4a3 valve body 4a4 plug 4a5 locating block 4b valve core component 4b1 diaphragm 4b2 pressure spring 4b3 adjusting bolt 4b4 valve stem 4b5 sealing block 4b6 first spring pressure pad 4b7 second spring pressure pad 4b8 diaphragm pressure pad 5 first manual gate valve 6 first pressure detecting meter 7 second manual gate valve 8 second pressure detecting meter.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1, fig. 2, fig. 3, and fig. 4, in the pressure reducing valve with an automatic opening and closing function of this embodiment, water flows in through an inlet end 1a of a pressure reducing valve body 1, flows along a water inlet pipe 2, a main valve control chamber 1b, and a water outlet pipe 3, and finally flows out through an outlet end 1c of the pressure reducing valve body 1, a pilot valve 4 is disposed on the water outlet pipe 3, the pilot valve 4 includes a housing 4a and a valve core assembly 4b disposed in the housing 4a, the water flows into the pilot valve 4, when the water pressure rises, the valve core assembly 4b automatically increases the drift diameter of the pilot valve 4 under the action of the water pressure, and the purpose of reducing the water pressure of the water outlet pipe 3 is achieved by increasing the water flow of the water outlet pipe 3; when water pressure reduces, case subassembly 4b is under hydraulic effect, the automatic latus rectum that reduces pilot valve 4, realize the discharge through reducing outlet pipe 3, reach the purpose that increases outlet pipe 3 water pressure, this device simple structure, under the effect that water pressure changes, through case subassembly 4b automatically regulated pilot valve 4's latus rectum, and then change the discharge in the outlet pipe 3, and then the water pressure of the exit end of automatic holding relief pressure valve body 1 is stable, the current relief pressure valve has been solved, the latus rectum that needs manual operation pressure regulating pipeline, the amount of labour is big, use uneconomical problem.

The adjusting bolt 4b3 is engaged with the protective cover 4a1 by a screw, the adjusting bolt 4b3 is engaged with the protective cover 4a1 by a screw to press the pressurizing spring 4b2 to deform, so that the pressurizing spring 4b2 generates a deformation-recovering elastic force, the elastic force of the punching spring 4b2 can drive the valve rod 4a3 at the bottom to move, the valve body 4a3 is provided with a plug 4a4, a positioning block 4a5 is arranged in the plug 4a4, the sealing block 4b5 is matched with the positioning block 4a5 to adjust the drift diameter of the pilot valve 4, when the water pressure is greater than the elastic force of the punching spring 4b2, the water flow compresses the punching spring 4b2 by pressing the diaphragm 4b1, the punching spring 4b2 contracts, so that the valve rod 4a3 drives the sealing block 4b5 to move away from the positioning block 4a5, thereby increasing the drift diameter of the pilot valve 4, reducing the water pressure in the water outlet pipe 2, when the water pressure is less than the elastic force of the punching spring 4b2, the punching spring 2 recovers under the action of the punching spring 2, the valve rod 4b4 drives the sealing block 4b5 to move towards the direction close to the positioning block 4a5, so that the drift diameter of the pilot valve 4 is reduced, the water pressure in the water outlet pipe 3 is increased, and the purpose of keeping the water pressure at the outlet end 1c of the pressure reducing valve body 1 stable is achieved.

But through the water pressure in the first pressure detection table 6 monitoring inlet tube 2, be equipped with first manual gate valve 5 on inlet tube 2, close first manual gate valve 5, the convenient maintenance to 2 back end pipelines of inlet tube or instrument, can monitor the water pressure in the outlet pipe 3 through second pressure detection table 8, through be equipped with the manual gate valve 7 of second on outlet pipe 3, close the manual gate valve 7 of second, the convenient maintenance to 3 back end pipelines of outlet pipe or instrument.

A second spring pressure pad 4b7 is further arranged between the adjusting bolt 4b3 and the valve rod 4b4, a diaphragm pressure pad 4b8 is further arranged between the second spring pressure pad 4b7 and the valve rod 4b4, and the diaphragm 4b1 is located between the diaphragm pressure pad 4b8 and the valve rod 4b4, so that force transmission between the charging spring 4b2 and the adjusting bolt 4b3 and the valve rod 4b4 is facilitated.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a relief pressure valve with automatic start-stop function, includes relief pressure valve body (1), inlet tube (2) and outlet pipe (3), be equipped with entrance point (1a), main valve control room (1b) and exit end (1c) in relief pressure valve body (1), wherein, inlet tube (2) are connected with entrance point (1a) of relief pressure valve body (1), outlet pipe (3) are connected with exit end (1c) of relief pressure valve body (1), the inlet tube with the outlet pipe communicates its characterized in that through main valve control room (1b) of relief pressure valve body (1): the water outlet pipe (3) is provided with a pilot valve (4), the pilot valve (4) comprises a shell (4a) and a valve core assembly (4b) arranged in the shell (4a), and the valve core assembly (4b) is used for keeping the water pressure stability of the outlet end (1c) of the pressure reducing valve body (1) through the drift diameter of the automatic adjusting pilot valve (4).

2. The pressure reducing valve with an automatic opening and closing function according to claim 1, characterized in that: the shell (4a) comprises a protective cover (4a1), a valve cover (4a2) and a valve body (4a3), wherein two ends of the valve cover (4a2) are detachably connected with the protective cover (4a1) and the valve body (4a3) respectively.

3. The pressure reducing valve with an automatic opening and closing function according to claim 2, characterized in that: the valve core assembly (4b) comprises a diaphragm (4b1) and a charging spring (4b2), the diaphragm (4b1) is arranged between the valve cover (4a2) and the valve body (4a3), the diaphragm (4b1) and the valve cover (4a2) enclose to form a main valve control cavity, and the charging spring (4b2) is installed in the main valve control cavity; an adjusting bolt (4b3) is mounted at the top of the charging spring (4b2), and the adjusting bolt (4b3) is in threaded engagement with the protective cover (4a1) for adjusting the elastic force of the charging spring (4b 2); a valve rod (4b4) is installed at the bottom of the pressurizing spring (4b2), the valve rod (4b4) penetrates through the diaphragm (4b1), a sealing block (4b5) is installed at the tail end of the valve rod (4b4), a plug (4a4) is arranged on the valve body (4a3), and a positioning block (4a5) is arranged in the plug (4a 4); the sealing block (4b5) is matched with the positioning block (4a5) for adjusting the drift diameter of the pilot valve (4).

4. The pressure reducing valve with an automatic opening and closing function according to claim 1, characterized in that: be equipped with first manual gate valve (5) on inlet tube (2), first manual gate valve (5) are used for opening and close inlet tube (2), still be equipped with first pressure detection table (6) on inlet tube (2), first pressure detection table (6) are used for detecting the water pressure in inlet tube (2).

5. The pressure reducing valve with an automatic opening and closing function according to claim 1, characterized in that: be equipped with manual gate valve of second (7) on outlet pipe (3), manual gate valve of second (7) are used for opening and close outlet pipe (3), still be equipped with second pressure detection table (8) on outlet pipe (3), second pressure detection table (8) are used for detecting the water pressure in outlet pipe (3).

6. The pressure reducing valve with an automatic opening and closing function according to claim 3, characterized in that: a first spring pressure pad (4b6) is arranged between the charging spring (4b2) and the adjusting bolt (4b 3).

7. The pressure reducing valve with an automatic opening and closing function according to claim 3, characterized in that: a second spring pressure pad (4b7) is further arranged between the adjusting bolt (4b3) and the valve rod (4b4), a diaphragm pressure pad (4b8) is further arranged between the second spring pressure pad (4b7) and the valve rod (4b4), and the diaphragm (4b1) is located between the diaphragm pressure pad (4b8) and the valve rod (4b 4).

8. The pressure reducing valve with an automatic opening and closing function according to claim 3, characterized in that: the protective cover (4a1) is in threaded connection with the valve cover (4a2), and the valve cover (4a2) is in bolted connection with the valve body (4a 3).