CN211474983U

CN211474983U - Pressure reducing valve with pressure regulation and control and pressure limiting setting functions

Info

Publication number: CN211474983U
Application number: CN201922275238.6U
Authority: CN
Inventors: 金焱
Original assignee: Shanghai Guanchuan Fluid Technology Co ltd
Current assignee: Shanghai Guanchuan Fluid Technology Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-09-11
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a pressure reducing valve with pressure regulation and pressure limiting setting, which comprises a valve body, wherein a flow inlet cavity and a flow outlet cavity are arranged inside the valve body, a valve seat is welded between the flow inlet cavity and the flow outlet cavity, a sealing ring is welded on the surface of the top end of the valve seat, a valve rod is installed in a buckle inside the valve body, a valve clack is welded at the bottom end of the valve rod, the valve clack is buckled on the surface of the top end of the sealing ring, a spring is installed on the surface of the valve rod in a buckle way, the top end of the spring is propped against the top end of the inner part of the flow outlet cavity, a regulating rod is installed in a rotating way on the top end of the inner part of the top end of the valve body, and the bottom end of the regulating rod is installed in the buckle way inside the valve rod, therefore, the pressure relief quantity is controlled by utilizing gaps generated at different intervals, and the effect of setting the pressure limiting is achieved.

Description

Pressure reducing valve with pressure regulation and control and pressure limiting setting functions

Technical Field

The utility model relates to a relief pressure valve field specifically is a relief pressure valve that possesses pressure regulation and control and pressure limiting setting.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, by means of the regulation of the control and regulation system, the fluctuation of the pressure behind the valve is balanced with the spring force, the pressure behind the valve is kept constant within a certain error range, and although the water flow has great head loss through the pressure reducing valve, the waste of water is reduced, the flow distribution of the system is reasonable, and the layout and the working condition of the system are improved, so that the energy is still saved on the whole. When the medium is steam, a pilot piston type pressure reducing valve or a pilot bellows type pressure reducing valve is preferably selected. The pressure relief valve should generally be installed on a horizontal pipe for ease of operation, adjustment, and maintenance.

However, the conventional pressure reducing valve has the following disadvantages:

1. the existing pressure reducing valve has the advantages that in the pressure reducing process, some impurities can enter the valve body and are attached to the valve clack and the valve seat in the valve body, the closing effect between the valve clack and the valve seat is influenced, and the pressure reducing function cannot be achieved according to requirements.

2. The existing pressure reducing valve does not have pressure regulation and control and pressure limiting setting, so that the pressure reducing requirements of different equipment cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a relief pressure valve that possesses pressure regulation and control and voltage limiting are set for to solve current relief pressure valve among the above-mentioned background art, at the in-process that reduces pressure, some impurity can get into in the valve body, on attaching to valve clack and the disk seat in the valve body, influence the closed effect between valve clack and the disk seat, thereby can't play the decompression function according to the demand, current relief pressure valve does not have pressure regulation and control and voltage limiting and sets for, thereby can't satisfy the problem of the decompression demand of different equipment.

In order to achieve the above object, the utility model provides a following technical scheme: the pressure reducing valve comprises a valve body, wherein a flow inlet cavity and a flow outlet cavity are formed in the valve body, a valve seat is welded between the flow inlet cavity and the flow outlet cavity, a sealing ring is welded on the surface of the top end of the valve seat, a valve rod is installed in the valve body through an internal buckle, a valve clack is welded at the bottom end of the valve rod, the valve clack is buckled on the surface of the top end of the sealing ring, a spring is installed on the surface of the valve rod in a sleeved mode, the top end of the spring abuts against the top end of the inner portion of the flow outlet cavity, the bottom end of the spring abuts against the surface of the top end of the valve clack, an adjusting rod.

Preferably, the valve cover is installed on the surface of the top end of the valve body through a bolt, the adjusting cavity is formed in the valve cover, one end of the adjusting rod is located in the adjusting cavity, the sealing pressing plate is installed on the surface of the adjusting rod in a sleeved mode, the adjusting cavity formed in the valve cover at the top end of the valve body can be matched with the valve body to generate a sealing cavity, accordingly, pressure intensity is generated, the situation that gas and liquid are sprayed out through gaps between the adjusting rod and the valve body is avoided, and meanwhile the sealing pressing plate installed on the surface of the adjusting rod in a sleeved mode can.

Preferably, the surface of the top end of the valve rod is welded with a limiting disc, and the up-down moving distance of the valve rod can be limited by the limiting disc welded on the surface of the top end of the valve rod, so that the situation that the whole valve body is damaged due to the fact that the up-down moving amplitude of the valve rod is too large due to too large pressure intensity is avoided.

Preferably, the sealing ring surface is provided with a pressure relief hole, and the pressure relief hole formed in the sealing ring surface is convenient for matching with the valve clack, so that the pressure relief hole of the whole pressure relief valve can be used for quantitative pressure relief, and the function of quantitative pressure relief is achieved.

Preferably, the bottom end of the valve clack is welded with a resistance plate, the resistance plate is installed in the sealing ring in an inserting and buckling mode, and the size of the pressure relief hole formed in the surface of the sealing ring can be adjusted according to the distance between the valve clack and the sealing ring through the resistance plate welded to the bottom end of the valve clack, so that the requirement for pressure limiting setting is met.

Preferably, the welding of valve body one end has the linking flange, link up mutual intercommunication between flange and the influent stream chamber, linking flange inner wall welding has the mounting bracket, mounting bracket surface bolt installs the filter screen, links up the filter screen in the flange through valve body one end, can filter the debris in the gaseous liquid of living, avoids in debris entering valve body, to sealed the influence that causes between valve clack and disk seat and the sealing ring.

The utility model provides a relief pressure valve that possesses pressure regulation and control and pressure limiting settlement possesses following beneficial effect:

(1) the utility model discloses a rotatory regulation pole, adjust the interval between regulation pole and the valve rod, just, do benefit to and to prescribe a limit to valve rod ascending distance, thereby can carry on spacingly to the interval between valve clack and the sealing ring, thereby utilize the gap that different intervals produced to come to control the pressure release volume, the efficiency of the pressure limiting settlement has been played, simultaneously through the spacing dish of valve rod top surface welding, can prescribe a limit to the valve rod reciprocating distance, thereby avoid the too big valve rod that leads to of pressure to reciprocate the condition appearance that the range is too big to cause whole valve body to damage.

(2) The utility model discloses a pressure release hole that the seal ring surface was seted up, conveniently do benefit to the cooperation valve clack, make the usable pressure release hole of whole relief pressure valve carry out quantitative pressure release, played the function of quantitative pressure release, through valve clack bottom welded resistance plate, can open the pressure release hole size according to the interval of valve clack and sealing ring to the sealing ring surface and adjust to the demand of limiting pressure settlement has been played.

(3) The utility model discloses a filter screen in the valve body one end linking flange can filter the debris in the gaseous liquid of living, avoids in debris entering valve body, to sealed the influence that causes between valve clack and disk seat and the sealing ring.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the valve flap structure of the present invention;

FIG. 3 is a schematic view of the sealing ring structure of the present invention;

fig. 4 is the utility model discloses an interior structure schematic diagram of linking flange.

In the figure: 1. a valve body; 2. a flow inlet cavity; 3. a drainage cavity; 4. a valve seat; 5. a limiting disc; 6. a valve stem; 7. a spring; 8. a valve cover; 9. an adjustment chamber; 10. sealing the pressure plate; 11. adjusting a rod; 12. a valve flap; 13. a seal ring; 14. a pressure relief vent; 15. blocking the plate; 16. connecting flanges; 17. a mounting frame; 18. and (4) a filter screen.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, the utility model provides a technical solution: the utility model provides a relief pressure valve that possesses pressure regulation and control and voltage limiting settlement, includes valve body 1, inflow chamber 2 and drainage chamber 3 have been seted up to valve body 1 is inside, the welding has disk seat 4 between inflow chamber 2 and the drainage chamber 3, disk seat 4 top skin weld has sealing ring 13, valve rod 6 is installed to 1 inside eye-splice of valve body, valve rod 6 bottom welding has valve clack 12, valve clack 12 buckle in sealing ring 13 top surface, valve rod 6 surface eye-splice installs spring 7, and the spring 7 top supports and leans on in the inside top of drainage chamber 3, spring 7 bottom supports and leans on in valve clack 12 top surface, the inside top rotary mounting in valve body 1 top has regulation pole 11, adjust pole 11 bottom eye-splice and install inside valve rod 6.

The valve cover 8 is installed on the top end surface of the valve body 1 through a bolt, the adjusting cavity 9 is formed in the valve cover 8, one end of the adjusting rod 11 is located in the adjusting cavity 9, the sealing pressing plate 10 is installed on the surface of the adjusting rod 11 in a sleeved mode, the adjusting cavity 9 formed in the top end of the valve body 1 in the sleeved mode can be matched with the valve body 1 to generate a sealing cavity, accordingly, pressure intensity is generated, the situation that gas and liquid are sprayed out through the gap between the adjusting rod 11 and the valve body 1 is avoided, and meanwhile the sealing pressing plate 10 installed on the surface of the adjusting rod 11 in a sleeved mode can be effectively prevented.

The limiting disc 5 is welded on the surface of the top end of the valve rod 6, the up-down moving distance of the valve rod 6 can be limited through the limiting disc 5 welded on the surface of the top end of the valve rod 6, and therefore the situation that the whole valve body 1 is damaged due to the fact that the up-down moving amplitude of the valve rod 6 is too large due to too large pressure intensity is avoided.

Pressure relief hole 14 has been seted up on sealing ring 13 surface, and through the pressure relief hole 14 that sealing ring 13 surface was seted up, the cooperation valve clack 12 is facilitated, makes the usable pressure relief hole 14 of whole relief pressure valve carry out quantitative pressure relief, has played the function of quantitative pressure relief.

The bottom welding of valve clack 12 has hinders board 15, hinder board 15 eye-splice is installed in sealing ring 13, through valve clack 12 bottom welded hinder board 15, can adjust sealing ring 13 surface opening pressure release hole 14 size according to the interval of valve clack 12 and sealing ring 13 to the demand that the voltage limiting was set for has been played.

The welding of 1 one end of valve body has linking flange 16, link up mutual intercommunication between flange 16 and the influent stream chamber 2, linking flange 16 inner wall welding has mounting bracket 17, mounting bracket 17 surface bolt installs filter screen 18, and filter screen 18 in linking flange 16 through 1 one end of valve body can filter the debris in the gaseous liquid of living, avoids in debris get into valve body 1, to sealed the influence that causes between valve clack 12 and disk seat 4 and the sealing ring 13.

It should be noted that, a pressure reducing valve with pressure regulation and pressure limiting setting, when working, the whole valve body 1 is communicated with the equipment needing pressure relief through the connecting flange 16 at one end, the gas or liquid discharged by the equipment enters the inlet cavity 2 in the valve body 1 through the connecting flange 16 and then is discharged from the discharge cavity 3, the impurities in the gas or liquid can be filtered through the filter screen 18 in the connecting flange 16 at one end of the valve body 1, the impurities can be prevented from entering the valve body 1 and affecting the sealing between the valve flap 12 and the valve seat 4 and the sealing ring 13, the valve flap 12 is tightly attached to the top surface of the sealing ring 13 by pressing the valve rod 6 downwards through rotating the adjusting rod 11, the valve body 1 can be completely closed, the valve rod 6 is lifted through rotating the adjusting rod 11, so that the valve flap 12 is separated from the sealing ring 13, the size of the pressure relief hole 14 opened on the surface of the sealing ring 13 is adjusted by the baffle 15 welded at the bottom end, thereby the demand that the pressure limiting was set for has been played, through rotatory regulation pole 11, make regulation pole 11 and valve rod 6 separate, when pressure reached a certain degree, gaseous valve clack 12 that supports, make valve clack 12 rise and the complete separation of sealing ring 13, thereby pressure gas can be discharged to discharge chamber 3 through disk seat 4 by inflow chamber 2 and discharge, thereby played according to the function of pressure automatic adjustment, through rotatory regulation pole 11, adjust the interval between regulation pole 11 and the valve rod 6, thereby can prescribe a limit to the lift distance of valve rod 6, thereby played the efficiency that the pressure limiting was set for.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pressure-reducing valve that possesses pressure regulation and control and pressure limiting setting, includes valve body (1), its characterized in that: the improved valve is characterized in that a flow inlet cavity (2) and a flow drainage cavity (3) are formed in the valve body (1), a valve seat (4) is welded between the flow inlet cavity (2) and the flow drainage cavity (3), a sealing ring (13) is welded on the surface of the top end of the valve seat (4), a valve rod (6) is installed on the inner portion of the valve body (1) in a buckling mode, a valve clack (12) is welded at the bottom end of the valve rod (6), the valve clack (12) is buckled on the surface of the top end of the sealing ring (13), a spring (7) is installed on the surface of the valve rod (6) in a buckling mode, the top end of the spring (7) is abutted to the inner portion of the flow drainage cavity (3), the bottom end of the spring (7) is abutted to the surface of the top end of the valve clack (12).

2. The pressure reducing valve with pressure regulation and pressure limit setting of claim 1, wherein: valve gap (8) are installed to valve body (1) top surface bolt, regulation chamber (9) have been seted up to valve gap (8) inside, adjust pole (11) one end and be located regulation chamber (9), adjust pole (11) surface cover and detain and install sealing pressure plate (10).

3. The pressure reducing valve with pressure regulation and pressure limit setting of claim 1, wherein: and a limiting disc (5) is welded on the surface of the top end of the valve rod (6).

4. The pressure reducing valve with pressure regulation and pressure limit setting of claim 1, wherein: and the surface of the sealing ring (13) is provided with a pressure relief hole (14).

5. The pressure reducing valve with pressure regulation and pressure limit setting of claim 1, wherein: the bottom end of the valve clack (12) is welded with a resistance plate (15), and the resistance plate (15) is installed in the sealing ring (13) in an inserting and buckling mode.

6. The pressure reducing valve with pressure regulation and pressure limit setting of claim 1, wherein: valve body (1) one end welding has linking flange (16), link up mutual intercommunication between flange (16) and inflow chamber (2), it has mounting bracket (17) to link up flange (16) inner wall welding, filter screen (18) are installed to mounting bracket (17) surface bolt.