CN218818539U

CN218818539U - Backpressure relief valve

Info

Publication number: CN218818539U
Application number: CN202223410254.XU
Authority: CN
Inventors: 王琛; 洪凌海; 叶程远; 王少昭; 郑大知
Original assignee: Fnore High Tech Hydraulic Co ltd
Current assignee: Fnore High Tech Hydraulic Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-04-07
Anticipated expiration: 2032-12-19

Abstract

The utility model relates to a backpressure relief valve, which comprises a valve body, pressure relief assembly, the joint, first pressure relief mouth has been seted up on the valve body, the second pressure relief mouth, first main liquid mouth that returns, first pressure relief mouth sets up the one side at the valve body, the second pressure relief mouth sets up the opposite side at the valve body, first main liquid mouth that returns sets up the lower extreme at first pressure relief mouth, the inside shaping of valve body has the valve pocket, the valve pocket interpolation be equipped with first pressure relief mouth, the second pressure relief mouth, first main liquid mouth that returns corresponds the pressure relief assembly that sets up, the joint sets up the lower extreme at second pressure relief mouth, the one end that connects stretches into the valve pocket and is connected with pressure relief assembly, the other end is fixed outside the valve pocket and is formed with the main liquid mouth that returns of second. The utility model discloses back pressure relief valve has compact structure, easy maintenance, advantage that dynamic response is fast.

Description

Backpressure relief valve

Technical Field

The utility model relates to a relief valve technical field especially relates to a backpressure relief valve.

Background

The pressure relief valve can be automatically opened and closed according to the working pressure of the system, and is generally arranged on a pipeline to protect the safety of the system. The backpressure relief valve is a protection device installed for ensuring that the liquid return pressure does not exceed a certain pressure value, and is used for automatically opening the pressure relief when the pressure in the main liquid return pipeline of the hydraulic support exceeds the set pressure value of the relief valve, so that the normal operation of a hydraulic system is ensured. However, the existing backpressure relief valve has the defects that the installation structure is inconvenient for coal mine maintenance personnel to go down to the well for maintenance, the maintenance is inconvenient, and the structure is not compact and the dynamic response is slow.

Disclosure of Invention

In view of this, the utility model aims at providing a compact structure, easy maintenance, fast backpressure relief valve of dynamic response.

In order to realize above purpose, the utility model discloses a this kind of backpressure relief valve, including valve body, pressure release subassembly, joint, first pressure release mouth, second pressure release mouth, first main liquid mouth that returns have been seted up on the valve body, first pressure release mouth sets up the one side at the valve body, the second pressure release mouth sets up the opposite side at the valve body, first main liquid mouth that returns sets up the lower extreme at first pressure release mouth, the inside shaping of valve body has the valve pocket, the valve pocket interpolation is equipped with the pressure release subassembly that corresponds the setting with first pressure release mouth, second pressure release mouth, first main liquid mouth that returns, the joint sets up the lower extreme at second pressure release mouth, the one end that connects stretches into in the valve pocket and is connected with the pressure release subassembly, and the other end is fixed outside the valve pocket and is formed with the main liquid mouth that returns of second.

The utility model discloses further set up to, the pressure release subassembly includes disk seat, valve casing, case, spring holder, spring, pressure regulating screw, dust cover, the disk seat is installed to the one end of case, the disk seat forms sealedly with case contact fit, the other end of case is installed and is served at the spring holder, the other end of spring holder is provided with the pressure regulating screw, spring mounting is between pressure regulating screw, spring holder, the one end of spring is supported on the spring holder, and the other end supports on the pressure regulating screw, the valve casing cover is established outside disk seat, case, spring holder, spring, pressure regulating screw, the both sides of valve casing are formed with the annular groove, the dust cover passes through the annular groove and is connected with the valve casing.

The utility model discloses further set up to, seted up the outage on the valve casing, first main fluid dram, the second is main returns the outage on the fluid port passes through the valve casing and communicates with first pressure release mouth, second pressure release mouth respectively.

The utility model discloses further set up to, still seted up the detection mouth on the valve body, the detection mouth sets up the lower extreme at pressure release subassembly, detection mouth mountable manometer or pressure sensor.

The working principle of the back pressure relief valve is as follows: the first main liquid return port and the second main liquid return port are connected into hydraulic pressure to the valve cavity, when the pressure in the valve cavity exceeds the set pressure of the backpressure relief valve, the hydraulic pressure pushes the valve core to overcome the spring force to move upwards, so that the valve core and the valve seat form a liquid drainage channel, the liquid drainage hole on the valve shell flows into the first pressure relief port and the second pressure relief port, the first pressure relief port and the second pressure relief port flow into the emulsion tank through the rubber tube, when the pressure in the valve cavity is lower than the set pressure of the backpressure relief valve, the valve core is closed and is in close contact with the valve seat, a reliable sealing strip is formed, and a pressure relief cycle is completed. The utility model discloses a backpressure relief valve is through regarding the pressure release subassembly as a whole plug connector, with the specialized tool cartridge in the valve intracavity, can wholly dismantle when needs maintenance, in order to make things convenient for colliery maintainer maintenance of going into the well, compact structure has, easy maintenance's advantage, its valve body passes through the pressure release subassembly, the structure cooperation that connects is compared current backpressure relief valve and is had its higher dynamic response power, can realize that hydraulic pressure force exceeds when the backpressure relief valve sets for the pressure value, the pressure release is opened in the automation that can be quick, guarantee hydraulic system's normal operating, prevent the free accident, have the fast advantage of dynamic response, detection mouth mountable manometer or pressure sensor, a liquid pressure returns for real-time monitoring system.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a valve housing according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1-fig. 2, the embodiment of the utility model provides a backpressure relief valve has adopted, including valve body 1, pressure relief subassembly 2, connect 3, first pressure relief mouth 11 has been seted up on valve body 1, second pressure relief mouth 12, first main liquid mouth 13 that returns, first pressure relief mouth 11 sets up the one side at valve body 1, second pressure relief mouth 12 sets up the opposite side at valve body 1, first main liquid mouth 13 that returns sets up the lower extreme at first

pressure relief mouth

11, 1 inside shaping of valve body has the valve pocket, the valve pocket interpolation be equipped with first pressure relief mouth 11, second pressure relief mouth 12, first main liquid mouth 13 that returns corresponds pressure relief subassembly 2 that sets up, connect 3 to set up the lower extreme at second pressure relief mouth 12, the one end that connects 3 stretches into the valve pocket in and is connected with pressure relief subassembly 2, the other end is fixed outside the valve pocket and is formed with the main liquid mouth 31 that returns of second.

Pressure release subassembly 2 includes disk seat 21, valve casing 22, case 23, spring holder 24, spring 25, pressure regulating screw 26, dust cover 27, disk seat 21 is installed to case 23's one end, disk seat 21 forms sealedly with case 23 contact cooperation, the other end of case 23 is installed in one of spring holder 24 and is served, the other end of spring holder 24 is provided with pressure regulating screw 26, spring 25 installs at pressure regulating screw 26, between the spring holder 24, spring 25's one end is supported on spring holder 24, the other end supports on pressure regulating screw 26, valve casing 22 cover is established at disk seat 21, case 23, spring holder 24, spring 25, outside pressure regulating screw 26, valve casing 22's both sides are formed with annular groove 221, dust cover 27 passes through annular groove 221 and is connected with valve casing 22.

A liquid discharge hole 222 is formed in the valve housing 22, and the first main liquid return port 13 and the second main liquid return port 31 are respectively communicated with the first pressure relief port 11 and the second pressure relief port 12 through the liquid discharge hole 222 in the valve housing 22.

The valve body 1 is further provided with a detection port 14, the detection port 14 is arranged at the lower end of the pressure relief assembly 2, and a pressure gauge or a pressure sensor can be installed at the detection port 14.

In addition to the above embodiments, there are also other various embodiments of the present invention, and those skilled in the art can make various changes and modifications according to the present invention without departing from the content of the essential technical solutions of the present invention, and these changes and modifications and the technical solutions in the present patent are equivalent, so that these corresponding changes and modifications should belong to the protection scope of the appended claims of the present invention, and the present invention is created to meet the actual research and development abilities and resource conditions of the applicant and the inventor.

Claims

1. The utility model provides a backpressure relief valve which characterized in that: including valve body, pressure release subassembly, joint, first pressure release mouth, second pressure release mouth, the first main liquid mouth that returns have been seted up on the valve body, first pressure release mouth sets up the one side at the valve body, the second pressure release mouth sets up the opposite side at the valve body, first main liquid mouth that returns sets up the lower extreme at first pressure release mouth, the inside shaping of valve body has the valve pocket, the valve pocket interpolation is equipped with the pressure release subassembly that corresponds the setting with first pressure release mouth, second pressure release mouth, the first main liquid mouth that returns, connect the lower extreme that sets up at second pressure release mouth, the one end that connects stretches into the valve intracavity and is connected with the pressure release subassembly, and the other end is fixed outside the valve pocket and is formed with the main liquid mouth that returns of second.

2. The back pressure relief valve of claim 1 wherein: the pressure release subassembly includes disk seat, valve casing, case, spring holder, spring, pressure regulating screw, dust cover, the disk seat is installed to the one end of case, the disk seat forms sealedly with the case contact cooperation, the other end of case is installed in one of spring holder, the other end of spring holder is provided with the pressure regulating screw, the spring mounting is between pressure regulating screw, spring holder, the one end of spring is supported on the spring holder, and the other end supports on the pressure regulating screw, the valve casing cover is established outside disk seat, case, spring holder, spring, pressure regulating screw, the both sides of valve casing are formed with the annular groove, the dust cover passes through the annular groove and is connected with the valve casing.

3. The back pressure relief valve of claim 2 wherein: the valve casing is provided with a liquid discharge hole, and the first main liquid return port and the second main liquid return port are respectively communicated with the first pressure relief port and the second pressure relief port through the liquid discharge hole in the valve casing.

4. The back pressure relief valve of claim 1 wherein: the valve body is further provided with a detection port, the detection port is arranged at the lower end of the pressure relief assembly, and a pressure gauge or a pressure sensor can be installed at the detection port.