CN214889091U - Pressure relief device for flat valve - Google Patents

Abstract

The utility model relates to a gas production equipment technical field, concretely relates to wafer valve pressure relief device, including the connecting seat, be provided with in the connecting seat be used for with annotate the gas passage of fat ware intercommunication, be provided with at least one release hole on the connecting seat, the release hole with gas passage side direction intercommunication, be equipped with the movable part among the gas passage, the movable part can pass gas passage stretches into in annotating the fat ware. The movable part extends into the inner cavity of the grease injector along the gas passage to push the valve clack in the inner cavity of the grease injector, so that gas in the valve cavity of the flat valve enters the gas passage of the connecting seat through the inner cavity of the grease injector and is discharged from the pressure relief hole in the side wall of the connecting seat, the purpose of relieving pressure in the valve cavity of the flat valve is achieved, and the safety of the subsequent grease injection operation process is improved.

Description

Pressure relief device for flat valve

Technical Field

The utility model relates to a gas production equipment technical field, especially a wafer valve pressure relief device.

Background

The flat valve is a special gate valve, and the interior of the flat valve needs to be periodically subjected to grease injection maintenance to ensure the normal operation of the flat valve.

As shown in fig. 1, the grease injection process is completed by arranging a grease injector 2 on the flat valve 1, the grease injector 2 has a check valve structure, a valve flap is pushed by a spring to close a valve inner passage, and when the grease injector is used, grease is pressed into a valve cavity 11 of the flat valve 1 by a grease injection gun, but because the valve seat and the valve plate are not tightly sealed, natural gas may exist in the valve cavity 11 of the flat valve 1 after long-term use, so that the gas pressure in the valve cavity 11 is high, the smooth grease injection process is affected, and safety risks are easily brought to operators.

Therefore, a technical scheme is needed at present to solve the technical problems that the smooth proceeding of the grease injection process is influenced by the air pressure existing in the valve cavity before the grease injection of the flat valve, and the safety risk is easily brought to operators.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: aiming at the technical problem that the residual pressure in a valve cavity needs to be discharged before the flat valve is filled with grease, the pressure relief device of the flat valve is provided.

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

a gas channel used for being communicated with a grease injector is arranged in the connecting seat, at least one pressure relief hole is formed in the connecting seat and is communicated with the gas channel in the lateral direction, a movable part is arranged in the gas channel and can penetrate through the gas channel to extend into the grease injector.

The utility model relates to a wafer valve pressure relief device, when need annotate the fat through annotating the fat ware in to the wafer valve chamber, be connected the connecting seat with annotating fat ware screw thread, make the gas passage on the connecting seat and the inner chamber intercommunication of annotating the fat ware, movable part among the removal gas passage, movable part stretches into along gas passage and annotates fat ware inner chamber, promote the valve clack of annotating in the fat ware inner chamber, make the valve clack break away from the valve port, thereby make during the gas passage that gas in the wafer valve chamber enters into the connecting seat through annotating fat ware inner chamber, discharge by the release hole on the connecting seat lateral wall, in order to reach the purpose of wafer valve chamber release, improve the security of follow-up notes fat operation process.

As the preferred scheme of the utility model, the connecting seat with annotate fat ware threaded connection. The connecting seat is connected with the inner thread arranged inside one end of the grease injector, the connecting seat is connected with the inner thread through the thread connection of the grease injector, the detachable connection of the connecting seat and the grease injector is realized, the connecting seat can be detached to inject grease into a valve cavity of the flat valve after pressure relief is completed, meanwhile, the thread connection enables the sealing performance between the connecting seat and the grease injector to be good, the messy channeling of natural gas output from the valve cavity is avoided, and the safety of a pressure relief process is improved.

As the utility model discloses a preferred scheme, be equipped with at least one clamping structure on the connecting seat outer wall, clamping structure includes two planes, two the plane is in connecting seat outer wall bilateral symmetry sets up. The connecting seat is conveniently clamped by a wrench or other clamping tools in the connecting process of the connecting seat and the grease injector, so that the connecting seat is rotated, and the connecting purpose of the connecting seat and the grease injector is realized.

As the preferred scheme of the utility model, the connecting seat sets up to hexagonal prism shape. The connecting seat is more convenient to clamp, and the installation efficiency of the connecting seat on the grease injector is improved.

As the utility model discloses a preferred scheme, gas passage sets up to the round hole form, gas passage follows the central line of connecting seat link up the connecting seat both ends. The gas passage is arranged in a regular round hole shape, so that the connecting seat is convenient to machine and form, and the movable part is convenient to move along the gas passage, so that the movable part is more convenient to push the valve clack inside the grease injector.

As the utility model discloses a preferred scheme, the movable part is including the thimble and the spliced pole that connect gradually, the spliced pole with connecting seat inner wall threaded connection. The connecting column and the ejector pin are both of cylindrical structures and are coaxially arranged with the ejector pin, the diameter of the ejector pin is smaller than that of the connecting column, the connecting column is turned into linear motion along the central line direction of the connecting seat through relative rotation between the connecting column and the inner wall of the connecting seat, the pushing effect of the movable part on the valve clack of the grease injector is realized, and meanwhile, the pushing operation of the connecting column is more convenient due to threaded connection.

As the preferred proposal of the utility model, the end part of the connecting column is provided with a handle. The handle is of a rod-shaped structure, the axis of the handle is perpendicular to the axis of the connecting column, the connecting column and the ejector pin can be rotated through the handle, the ejector pin moves towards one side of the grease injector, and therefore the valve clack inside the grease injector is pushed, and gas in the valve cavity of the flat valve is exhausted through the gas channel of the connecting seat.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the movable part extends into the inner cavity of the grease injector along the gas passage to push the valve clack in the inner cavity of the grease injector, so that gas in the valve cavity of the flat valve enters the gas passage of the connecting seat through the inner cavity of the grease injector and is discharged from the pressure relief hole in the side wall of the connecting seat, the purpose of relieving pressure in the valve cavity of the flat valve is achieved, and the safety of the subsequent grease injection operation process is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art grease injector and a flat valve;

fig. 2 is a schematic view of an internal structure of a pressure relief device of a flat valve according to the present invention;

fig. 3 is a schematic view of an external structure of a pressure relief device of a flat valve according to the present invention;

FIG. 4 is a diagram illustrating the usage status of the present invention;

FIG. 5 is an enlarged view at A in FIG. 4;

the labels in the figure are: 1-flat valve, 11-valve cavity, 2-grease injector, 21-valve flap, 22-spring, 3-connecting seat, 31-gas channel, 32-pressure relief hole, 4-movable part, 41-thimble, 42-connecting column and 43-handle.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

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. 2, 3, 4 and 5, the pressure relief device of the flat valve of the present embodiment includes a connecting seat 3, a gas passage 31 is provided in the connecting seat 3 for communicating with a grease injector 2, at least one pressure relief hole 32 is provided in the connecting seat 3, the pressure relief hole 32 is laterally communicated with the gas passage 31, a movable member 4 is provided in the gas passage 31, and the movable member 4 can extend into the grease injector 2 through the gas passage 31.

Specifically, the inside internal thread that is equipped with of one end of annotating fat ware 2 is connected to connecting seat 3, connecting seat 3 passes through internal thread and annotate fat ware 2 threaded connection have realized connecting seat 3 and the detachable connection of annotating fat ware 2, can dismantle connecting seat 3 and annotate fat in the valve pocket 11 of wafer valve 1 after the release is accomplished, and threaded connection makes the leakproofness good between connecting seat 3 and the notes fat ware 2 simultaneously, avoids the natural gas of output in the valve pocket 11 to scurry, improves the security of release process.

Specifically, gas passage 31 sets up to the circular hole form, gas passage follows the central line of connecting seat 3 link up 3 both ends of connecting seat, gas passage 31 set up to regular circular hole form, and the machine-shaping of connecting seat 3 not only is convenient for, and the movable part of being convenient for moreover is along gas passage 31's removal, and it is more convenient to make movable part 4 to annotate the operation of pushing away of 2 inside valve clacks 21 of fat ware.

Specifically, movable part 4 includes thimble 41, thimble 41 tip is equipped with spliced pole 42, spliced pole 42 with 3 inner wall threaded connection of connecting seat, spliced pole 42 and thimble 41 all are cylindric structure, and spliced pole 42 and the coaxial setting of thimble 41, and the diameter of thimble 41 is less than spliced pole 42's diameter, through the relative rotation between spliced pole 42 and the 3 inner walls of connecting seat, turns into the linear motion of spliced pole 42 along the central line direction of connecting seat 3, has realized movable part 4 and has supported the thrust effect to annotating 2 valve clacks 21 of fat ware, and threaded connection makes the top of spliced pole 42 operate more conveniently simultaneously.

In the pressure relief device for the flat valve of the embodiment, when grease needs to be injected into the valve cavity 11 of the flat valve 1 through the grease injector 2, the connecting seat 3 is in threaded connection with the grease injector 2, so that the gas passage 31 on the connecting seat 3 is communicated with the inner cavity of the grease injector 2, the connecting column 42 in the gas passage 31 is rotated, the thimble 41 at the front end of the connecting column 42 extends into the inner cavity of the grease injector 2 along the gas passage 31, the valve flap 22 in the inner cavity of the grease injector 2 is pushed, the valve flap 22 is separated from the valve port, and thus, gas in the valve cavity 11 of the flat valve 1 enters the gas passage 31 of the connecting seat 3 through the inner cavity of the grease injector 2 and is discharged from the pressure relief hole 32 on the side wall of the connecting seat 3, so that the purpose of relieving pressure in the valve cavity 11 of the flat valve 1 is achieved, and the safety of the subsequent grease injection operation process is improved.

Example 2

As shown in fig. 3, in this embodiment, the difference from embodiment 1 is that at least one clamping structure is disposed on the outer wall of the connecting seat 3, the clamping structure includes two planes, the two planes are symmetrically disposed on two sides of the outer wall of the connecting seat 3, so that in the process of connecting the connecting seat 3 and the grease injector 2, the connecting seat 3 can be clamped by a wrench or other clamping tools, so as to rotate the connecting seat 3, and achieve the purpose of connecting the connecting seat 3 and the grease injector 2.

Preferably, the connecting seat 3 is in a hexagonal prism shape, so that the connecting seat 3 is more convenient to clamp, and the installation efficiency of the connecting seat 3 on the grease injector 2 is improved.

Example 3

As shown in fig. 2 and fig. 3, the present embodiment is different from embodiment 1 in that a handle 43 is disposed at an end of the connecting column 42, the handle 43 is a rod-shaped structure, the axis of the handle 43 is perpendicular to the axis of the connecting column 42, and the connecting column 42 and the thimble 41 are rotated by the handle 43, so that the thimble 41 moves toward the grease injector 2, thereby pushing the valve flap 21 inside the grease injector 2, and discharging the gas in the valve cavity 11 of the flat valve 1 through the gas passage 31 of the connecting seat 3.

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 (7)

1. The pressure relief device for the flat valve is characterized by comprising a connecting seat (3), wherein a gas channel (31) communicated with a grease injector (2) is arranged in the connecting seat (3), at least one pressure relief hole (32) is formed in the connecting seat (3), the pressure relief hole (32) is laterally communicated with the gas channel (31), a movable part (4) is arranged in the gas channel (31), and the movable part (4) can penetrate through the gas channel (31) and extend into the grease injector (2).

2. The flat valve pressure relief device according to claim 1, wherein the connecting seat (3) is threadedly connected to the grease injector (2).

3. The pressure relief device of a flat valve according to claim 2, wherein the outer wall of the connecting seat (3) is provided with at least one clamping structure, the clamping structure comprises two planes, and the two planes are symmetrically arranged on two sides of the outer wall of the connecting seat (3).

4. A flat valve pressure relief device according to claim 3, characterized in that the connection seat (3) is provided in the shape of a hexagon.

5. The flat valve pressure relief device according to claim 1, wherein the gas passage (31) is provided in a circular hole shape, and the gas passage penetrates both ends of the connecting seat (3) along a center line of the connecting seat (3).

6. The pressure relief device of a flat valve according to claim 1, wherein the movable member (4) comprises a thimble (41) and a connecting column (42) connected in sequence, and the connecting column (42) is in threaded connection with the inner wall of the connecting seat (3).

7. The pressure relief device of claim 6, wherein a handle (43) is provided at the end of the connecting column (42).

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