CN209781688U

CN209781688U - High-pressure relief valve

Info

Publication number: CN209781688U
Application number: CN201920387766.8U
Authority: CN
Inventors: 董敏青; 赵炀; 王新
Original assignee: Changzhou Nite Metal Technology Co Ltd
Current assignee: Changzhou Nite Metal Technology Co Ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2019-12-13
Anticipated expiration: 2029-03-26

Abstract

the utility model discloses a high-pressure relief valve, including the valve body, the valve body upper end is provided with the hydro-cylinder, and valve body one side is provided with high-pressure medium pipe, install the rose box on the high-pressure medium pipe, the valve body includes valve block and lower valve block, connect through connecting bolt between the clamping ring on valve block and the lower valve block, the inside piston that is provided with of hydro-cylinder, be provided with reset spring between piston and the hydro-cylinder bottom, piston and push rod one end are connected, the push rod other end is connected with the promotion head, the push rod penetrates the through-hole on the inside sealed piece of runner, be provided with the disk seat on the lower runner of lower valve block, lower runner and pressure release pipe one end are connected. The utility model discloses a filter equipment comprises metal filter screen and connection piece, and the connection piece welding is in metal filter screen both sides, and the connection piece passes through connecting bolt and rose box to be connected, can be fine filter high pressure medium to avoid the impurity in the high pressure medium to cause the inside jam of valve body.

Description

High-pressure relief valve

Technical Field

The utility model relates to a relief valve technical field specifically is a high-pressure relief valve.

Background

The high-pressure relief valve is opened and close according to the pressure in the pipeline, and high-pressure relief valve is in the use, and during the pressure release, impurity in the high-pressure medium causes high-pressure relief valve's jam easily, and the back is accomplished in the pressure release moreover, and the reset spring that the case resets is corroded by the high-pressure medium easily, unable fine protection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high pressure relief valve, the reset spring who aims at improving the case and reset easily corrodes and the high pressure medium in impurity causes high pressure relief valve's jam problem easily.

The utility model discloses a realize like this:

A high-pressure relief valve comprises a valve body, wherein an oil cylinder is arranged at the upper end of the valve body, a high-pressure medium pipe is arranged on one side of the valve body, a filter box is installed on the high-pressure medium pipe, a filter device is arranged in the filter box, a drain pipe is arranged on the lower side of the filter box, a drain valve is arranged on the drain pipe, the valve body comprises an upper valve block and a lower valve block, connecting rings on the upper valve block and the lower valve block are connected through a connecting bolt, an upper flow passage and a lower flow passage are respectively arranged in the upper valve block and the lower valve block, the upper flow passage and the lower flow passage are communicated, a piston is arranged in the oil cylinder, a reset spring is arranged between the piston and the bottom of the oil cylinder, the piston is connected with one end of a push rod, the other end of the push rod is connected with a push head, the push rod, the valve seat is communicated with the lower flow passage, the valve core is arranged on the valve seat and welded on the fixed seat, a valve core return device is arranged between the fixed seat and the bottom of the lower flow passage, and the lower flow passage is connected with one end of the pressure relief pipe.

Furthermore, the valve core return device comprises a valve core return spring and a telescopic rubber protective sleeve, the valve core return spring is located inside the telescopic rubber protective sleeve, and two ends of the telescopic rubber protective sleeve are bonded with the fixed base and the bottom of the lower flow channel.

Furthermore, the filtering device is composed of a metal filter screen and connecting pieces, the connecting pieces are welded on two sides of the metal filter screen, and the connecting pieces are connected with the filter box through connecting bolts.

Furthermore, the pushing head and the push rod are of an integrated structure, and the pushing head is arc-shaped.

Furthermore, the connecting ring, the upper valve block and the lower valve block are of an integrated structure, and a sealing ring is arranged between the two connecting rings.

Furthermore, the pressure relief pipes are communicated with the lower flow passage, and the number of the pressure relief pipes is 2-6.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model discloses a case return means includes case return spring and flexible rubber lag, and case return spring is located inside flexible rubber lag, and flexible rubber lag both ends bond with fixing base and lower runner bottom, and case return means can be fine resets the case, and flexible rubber lag can be fine protects case return spring.

(2) The filter device comprises a metal filter screen and connecting pieces, the connecting pieces are welded on two sides of the metal filter screen and connected with the filter box through connecting bolts, and high-pressure media can be well filtered, so that the internal blockage of the valve body caused by impurities in the high-pressure media is avoided.

(3) Through promoting head and push rod structure as an organic whole, it is circular-arc to promote the head, promotes head and case and suits, and improvement that can be fine promotes the stability of head and case contact.

(4) The valve body is provided with a connecting ring, the connecting ring is connected with the upper valve block, the lower valve block is connected with the lower valve block, and the connecting ring is arranged between the upper valve block and the lower valve block.

(5) The pressure relief pipes are communicated with the lower flow passage, the number of the pressure relief pipes is 2-6, and the pressure relief efficiency can be well improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a front view of a high-pressure relief valve according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a valve core returning device of the high-pressure relief valve shown in FIG. 1;

FIG. 3 is a schematic diagram of a filter assembly of the high pressure relief valve of FIG. 1;

Fig. 4 is a front view of a high pressure relief valve of the type shown in fig. 1.

In the figure: 1. an oil cylinder; 2. an upper valve block; 3. a connecting ring; 4. a lower valve block; 5. a pressure relief pipe; 6. a high-pressure medium pipe; 7. a blow-off pipe; 8. a filter box; 9. a piston; 10. a return spring; 11. a sealing block; 12. an upper flow passage; 13. a push rod; 14. a pusher head; 15. a valve core; 16. a valve core return device; 17. a fixed seat; 18. a valve core return spring; 19. a telescopic rubber protective sleeve; 20. a metal screen; 21. connecting sheets; 22. and (4) a filtering device.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Embodiment 1, referring to fig. 1-4, a high pressure relief valve comprises a valve body, an oil cylinder 1 is arranged at the upper end of the valve body, a high pressure medium pipe 6 is arranged at one side of the valve body, a filter box 8 is arranged on the high pressure medium pipe 6, a filter device 22 is arranged inside the filter box 8, a drain pipe 7 is arranged at the lower side of the filter box 8, a drain valve is arranged on the drain pipe 7, the valve body comprises an upper valve block 2 and a lower valve block 4, the upper valve block 2 is connected with a connecting ring 3 on the lower valve block 4 through a connecting bolt, an upper flow passage 12 and a lower flow passage are respectively arranged inside the upper valve block 2 and the lower valve block 4, the upper flow passage 12 is communicated with the lower flow passage, a piston 9 is arranged inside the oil cylinder 1, a return spring 10 is arranged between the piston 9 and the bottom of the oil cylinder 1, the piston 9 is connected with one end of a push rod 13, the, the lower flow passage of the lower valve block 4 is provided with a valve seat which is communicated with the lower flow passage, the valve seat is provided with a valve core 15, the valve core 15 is welded on a fixed seat 17, a valve core return device 16 is arranged between the fixed seat 17 and the bottom of the lower flow passage, the lower flow passage is connected with one end of a pressure relief pipe 5, when in use, a control medium is filled into the valve body, a piston 9 drives a push rod 13 to act, the push rod 13 drives a push head 14, the push head 14 pushes the valve core 15, the valve core 15 is far away from the valve seat, so that the high-pressure medium enters the pressure relief pipe 5 through an upper flow passage 12 and the lower flow passage and is discharged, after pressure relief is completed, the control medium flows out of the valve body, a return spring 10 returns the piston 9, the piston 9 drives the push rod 13 and the push head 14 to return, then the valve core return device 16 returns the valve core 15, the filter device 22 in the filter box 8 filters high-pressure media, so that the high-pressure media are prevented from blocking the valve body, the upper valve block 2 and the lower valve block 4 are connected through the connecting bolts, the upper valve block 2 and the lower valve block 4 are convenient to disassemble, and the valve body is convenient to disassemble and clean when blocked.

referring to fig. 2, the valve core return device 16 includes a valve core return spring 18 and a telescopic rubber protecting sleeve 19, the valve core return spring 18 is located inside the telescopic rubber protecting sleeve 19, two ends of the telescopic rubber protecting sleeve 19 are bonded with the fixing base 17 and the bottom of the lower runner, the valve core return device 16 can well reset the valve core 15, and the telescopic rubber protecting sleeve 19 can well protect the valve core return spring 18.

referring to fig. 1, filter equipment 22 comprises metal filter screen 20 and connection piece 21, and connection piece 21 welds in metal filter screen 20 both sides, and connection piece 21 passes through connecting bolt and rose box 8 and connects, can be fine filter high-pressure medium to avoid the impurity in the high-pressure medium to cause the inside jam of valve body.

referring to fig. 3, the pushing head 14 and the push rod 13 are of an integral structure, the pushing head 14 is arc-shaped, the pushing head 14 is adapted to the valve core 15, and the contact stability of the pushing head 14 and the valve core 15 can be well improved.

Referring to fig. 1, the connecting ring 3, the upper valve block 2 and the lower valve block 4 are of an integral structure, a sealing ring is arranged between the two connecting rings 3, the upper valve block 2 and the lower valve block 4 are convenient to detach and replace, and therefore the inside of the valve body is convenient to clean.

Referring to fig. 1, the pressure relief pipes 5 are communicated with the lower flow passage, and the number of the pressure relief pipes 5 is 2-6, so that the pressure relief efficiency can be well improved.

The utility model discloses a theory of operation is: when the valve is used, a control medium is filled into the valve body, the piston 9 drives the push rod 13 to act, the push rod 13 drives the push head 14, the push head 14 pushes the valve core 15, the valve core 15 is far away from a valve seat, so that a high-pressure medium enters the pressure relief pipe 5 through the upper flow passage 12 and the lower flow passage to be discharged, after pressure relief is completed, the control medium flows out of the valve body, the reset spring 10 resets the piston 9, the piston 9 drives the push rod 13 and the push head 14 to reset, then the valve core reset device 16 resets the valve core 15, so that the valve core 15 seals the valve seat, the telescopic rubber protective sleeve 19 can well protect the valve core reset spring 18, the filter device 22 in the filter box 8 filters the high-pressure medium, so that the valve body is prevented from being blocked by the high-pressure medium, the upper valve block 2 is connected with the connecting ring 3 on the lower valve block 4 through the connecting bolt, and the, thereby conveniently dismantle the clearance when the valve body blocks up.

the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high pressure relief valve, includes the valve body, its characterized in that: the valve body is characterized in that an oil cylinder (1) is arranged at the upper end of the valve body, a high-pressure medium pipe (6) is arranged on one side of the valve body, a filter box (8) is arranged on the high-pressure medium pipe (6), a filter device (22) is arranged in the filter box (8), a blow-off pipe (7) is arranged on the lower side of the filter box (8), a blow-off valve is arranged on the blow-off pipe (7), the valve body comprises an upper valve block (2) and a lower valve block (4), connecting rings (3) on the upper valve block (2) and the lower valve block (4) are connected through connecting bolts, an upper flow passage (12) and a lower flow passage are respectively arranged in the upper valve block (2) and the lower valve block (4), the upper flow passage (12) and the lower flow passage are communicated, a piston (9) is arranged in the oil cylinder (1), a reset spring (10) is arranged between the piston (9) and the bottom of the oil cylinder, the other end of the push rod (13) is connected with the pushing head (14), the push rod (13) penetrates through a through hole in a sealing block (11) in an upper flow channel (12), a valve seat is arranged on a lower flow channel of the lower valve block (4), the valve seat is communicated with the lower flow channel, a valve core (15) is arranged on the valve seat, the valve core (15) is welded on a fixed seat (17), a valve core returning device (16) is arranged between the fixed seat (17) and the bottom of the lower flow channel, and the lower flow channel is connected with one end of the pressure relief pipe (5).

2. The high-pressure relief valve according to claim 1, characterized in that the valve core returning device (16) comprises a valve core returning spring (18) and a telescopic rubber protecting sleeve (19), the valve core returning spring (18) is located inside the telescopic rubber protecting sleeve (19), and two ends of the telescopic rubber protecting sleeve (19) are bonded with the fixed seat (17) and the bottom of the lower flow passage.

3. A high-pressure relief valve according to claim 1, characterized in that the filtering means (22) consists of a metal screen (20) and a connecting piece (21), the connecting piece (21) is welded on both sides of the metal screen (20), and the connecting piece (21) is connected with the filtering box (8) by a connecting bolt.

4. The high-pressure relief valve according to claim 1, characterized in that the pushing head (14) and the push rod (13) are of an integral structure, and the pushing head (14) is arc-shaped.

5. A high-pressure relief valve according to claim 1, characterized in that the connecting rings (3) are integrated with the upper valve block (2) and the lower valve block (4), and a sealing ring is arranged between the two connecting rings (3).

6. A high pressure relief valve according to claim 1 characterized in that said pressure relief pipes (5) are in communication with the lower flow passage, said number of pressure relief pipes (5) being between 2 and 6.