CN219177011U

CN219177011U - Pressure relief structure for motor valve

Info

Publication number: CN219177011U
Application number: CN202320180644.8U
Authority: CN
Inventors: 祖渊
Original assignee: Chengdu Zhicheng Technology Co ltd
Current assignee: Chengdu Zhicheng Technology Co ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-06-13
Anticipated expiration: 2033-02-10

Abstract

The utility model discloses a pressure relief structure for a motor valve, which comprises a guide bracket, a threaded sleeve, at least one guide block, a nut, a pushing screw and a sealing component for sealing a channel in a shell. In the utility model, when the pressure difference between the air inlet end and the air outlet end is large, the pressure can be released through the pressure release structure, so that the resistance of the valve opening is reduced, and the adaptability of the valve to various pressure environments can be improved; the guide bracket and the threaded sleeve form a guide mechanism, the push screw is in threaded fit with the push screw through the nut, and the push screw is driven by power, so that the sealing component is partially opened, and the gas passes through a channel between the first connecting part and the sealing component and then passes through an air hole of the sealing component, so that pressure relief is realized; and finally, the screw rod is pushed to further rotate, so that the gas channel in the shell can be thoroughly opened.

Description

Pressure relief structure for motor valve

Technical Field

The utility model relates to the technical field of motor valves, in particular to a pressure relief structure for a motor valve.

Background

In order to adapt the motor valve to a high-pressure environment, the motor valve is mostly replaced by a stronger motor, and the valve is easy to open by increasing the moment of the motor or the transmission ratio of a transmission mechanism, but the difficulty in structural design of the motor valve is greatly increased.

The shortcoming of the pressure relief structure for the motor valve in the prior art is that: (1) the adaptability to high-pressure environments is poor; (2) the difficulty in selecting the motor is high; the cause is mainly as follows: the air pressure environment is changeable, and the valve structure is limited; this would be a significant time and material cost if the motor was to be re-selected and a new valve structure designed for each change of a high pressure environment.

A relief structure for a motor valve has been developed to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to solve the problems and designs a pressure relief structure for a motor valve.

The utility model realizes the above purpose through the following technical scheme:

a pressure relief structure for a motor valve, comprising:

a guide bracket arranged at a fixed position; a guide groove and at least one sliding hole are axially formed in the guide bracket; the guide groove is communicated with the sliding hole, and is arranged at the outer side of the sliding hole;

a thread sleeve; the thread sleeve comprises a first connecting part and a second connecting part, the first end of the second connecting part is connected with the first end of the first connecting part, and the size of the second connecting part is smaller than that of the first connecting part; the first connecting part is slidably arranged in the sliding hole; a moving hole is axially arranged in the first connecting part;

at least one guide block; one end of the guide block is connected with the thread bush, and the other end of the guide block is slidably arranged in the guide groove;

a nut; the nut is fixedly arranged in the moving hole at the second end of the first connecting part;

pushing the screw; the pushing screw rod is in threaded connection with the nut; one end of the pushing screw is used for being connected with the power output mechanism;

a seal assembly for sealing a passageway in the housing; a connecting hole is formed in the center of the sealing assembly, and an air hole is formed near the connecting hole; the second connecting part is slidably arranged in the connecting hole, the second end of the second connecting part protrudes outwards in the radial direction, and the diameter of the second end of the second connecting part is larger than that of the connecting hole; when the valve is not opened, the first end part of the first connecting part is tightly attached to one end surface of the sealing assembly and is used for sealing the air hole; in the pressure release state, the first end part of the first connecting part and one end surface of the sealing assembly are arranged at intervals, and gas flows through the air holes; when the valve is opened, the other end face of the sealing assembly is arranged at intervals with the shell, and a channel in the shell is opened.

Specifically, seal assembly includes sealing plug and sealed skeleton, and connecting hole and air vent set up on sealed skeleton, and the sealing plug suit is outside sealed skeleton to spill air vent and connecting hole on the sealed skeleton, the first end tip and the sealing plug cooperation of first connecting portion are connected.

Specifically, a sealing convex ring protruding axially is arranged on the first end part of the first connecting part, and the sealing convex ring is connected with the sealing plug in a matched mode.

Specifically, the radial outward bulge that the second end of second connecting portion set up is from taking pad screw, and the second end of second connecting portion is inside to be provided with the screw, screw and from taking pad screw threaded connection.

Preferably, the guide block is a locking screw, correspondingly, a radial through hole is arranged on the first connecting part, a clamping hole is arranged on the nut, the head of the locking screw is slidably arranged in the guide groove, and the rod part of the locking screw passes through the radial through hole and the clamping hole.

The utility model has the beneficial effects that:

in the utility model, when the pressure difference between the air inlet end and the air outlet end is large, the pressure can be released through the pressure release structure, so that the resistance of the valve opening is reduced, and the adaptability of the valve to various pressure environments can be improved; the guide bracket and the threaded sleeve form a guide mechanism, the push screw is in threaded fit with the push screw through the nut, and the push screw is driven by power, so that the sealing component is partially opened, and the gas passes through a channel between the first connecting part and the sealing component and then passes through an air hole of the sealing component, so that pressure relief is realized; and finally, the screw rod is pushed to further rotate, so that the gas channel in the shell can be thoroughly opened.

Drawings

FIG. 1 is a schematic cross-sectional view of the present application (non-valve open state);

FIG. 2 is a schematic cross-sectional view of the present application (pressure relief state);

FIG. 3 is a schematic cross-sectional view of the present application (valve open state);

FIG. 4 is a schematic view of the structure of the connecting transmission case of the present application;

FIG. 5 is a schematic view of a partial cross-sectional structure of the present application;

FIG. 6 is a schematic structural view of a sealing collar of the present application;

FIG. 7 is a schematic view of the mounting structure of the locking screw of the present application;

fig. 8 is a schematic structural view of the sealing plug in the present application;

fig. 9 is a schematic structural view of the sealing skeleton in the present application.

In the figure: 1-guide bracket, 11-guide groove, 2-pushing screw, 3-nut, 31-clamping hole, 4-shell, 5-thread sleeve, 51-first connecting part, 511-nut mounting hole, 512-moving hole, 513-sealing convex ring, 514-radial through hole, 52-second connecting part, 521-screw hole, 6-sealing plug, 61-first vent hole, 62-mounting groove, 63-opening, 7-self-pad screw, 8-sealing framework, 81-second vent hole, 9-transmission case and 10-locking screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The following describes specific embodiments of the present utility model in detail with reference to the drawings.

As shown in fig. 1 to 7, a pressure relief structure for a motor valve includes:

a guide bracket 1 arranged at a fixed position; a guide groove 11 and two slide holes are axially arranged in the guide bracket 1; the guide grooves 11 are communicated with the sliding holes, the guide grooves 11 are arranged on the outer sides of the sliding holes, and the two guide grooves 11 are oppositely arranged;

a thread bush 5; the thread bush 5 includes a first connecting portion 51 and a second connecting portion 52, both of the first connecting portion 51 and the second connecting portion 52 being formed in a cylindrical structure; the first end of the second connection part 52 is connected with the first end of the first connection part 51, and the diameter of the second connection part 52 is smaller than that of the first connection part 51; the first connecting part 51 is slidably arranged in the sliding hole, and the outer diameter of the first connecting part 51 is slightly smaller than the diameter of the sliding hole; the first connection portion 51 is axially provided with a moving hole 512;

two locking screws 10; two radial through holes 514 are oppositely formed in the first connecting portion 51, two clamping holes 31 are formed in the nut 3, the head of the locking screw 10 is slidably arranged in the guide groove 11, the rod portion of the locking screw 10 penetrates through the radial through holes 514 and the clamping holes 31, the position of the nut 3 can be further fixed, and a circumferential rotation stopping effect is achieved.

A nut 3; the nut 3 is fixedly installed in the moving hole 512 of the second end of the first coupling part 51; here, a nut mounting hole 511 is designed, and the nut mounting hole 511 may be in the shape of the nut 3 or may be formed as a circular hole having a larger diameter than the moving hole 512;

pushing the screw 2; the pushing screw rod 2 is in threaded connection with the nut 3; the first end of the pushing screw rod 2 is connected with the power output mechanism through a transmission case 9; when the power output mechanism works, the pushing screw rod 2 is driven to rotate; the second end of the pushing screw 2 is placed in the moving hole 512, and enough length is reserved in the moving hole 512 until the sealing component can completely open the channel in the shell 4;

a sealing assembly for sealing a passage in the housing 4; the sealing assembly comprises a sealing plug 6 and a sealing framework 8, and the sealing framework 8 is formed into a cylinder;

a connecting hole is formed in the center of the sealing framework 8, four air holes are formed in the vicinity of the connecting hole, the connecting hole and the four air holes are distributed in a quincuncial shape, and the connecting hole and the four air holes form a second ventilation hole 81; the sealing plug 6 is sleeved outside the sealing framework 8, air holes and connecting holes in the sealing framework 8 are leaked out, an axially protruding sealing convex ring 513 is arranged at the first end part of the first connecting part 51, and the sealing convex ring 513 is connected with the sealing plug 6 in a matched mode.

The second connecting part 52 is slidably arranged in the connecting hole, and the diameter of the connecting hole is slightly larger than the outer diameter of the second connecting part 52;

a screw hole 521 is formed in the second end of the second connecting part 52, the screw hole 521 is in threaded connection with the self-pad screw 7, and the diameter of a gasket of the self-pad screw 7 is larger than the diameter of the connecting hole;

note that when the sealing collar 513 is tightly attached to the sealing plug 6, a gap is provided between the gasket with the gasket screw 7 and the sealing skeleton 8.

The guide bracket 1, the thread bush 5 and the sealing component are all formed into a cylindrical structure.

As shown in fig. 6, in some embodiments, the sealing collar 513 is formed to gradually decrease in thickness from a position near the first connection portion 51 to a position distant from the first connection portion 51.

As shown in fig. 9, in some embodiments, the connection holes may be respectively in communication with four air holes.

As shown in fig. 8, in some embodiments, a first vent hole 61 is provided in the middle of one end of the sealing plug 6 near the first connection portion 51, a mounting groove 62 is provided in the interior of the sealing plug 6, and an opening 63 is provided in the middle of one end of the sealing plug 6 far from the first connection portion 51; the diameter of the opening 63 is larger than that of the first vent hole 61, and the first vent hole 61 still leaves a space for gas to flow through the second connecting portion 52, and is in contact with the end face of the sealing skeleton 8 when the self-supporting screw 7 is in contact with the sealing assembly.

In some embodiments, the sealing plug 6 is made of a flexible material, preferably rubber, and the other parts are rigid materials.

In some embodiments, the push screw 2 and the nut 3 must be able to move smoothly, and the push screw 2 and the nut 3 must be coated with grease so as to have small relative sliding resistance.

The working state of the application is divided into a plurality of states, and when the valve is not opened as shown in fig. 1, the sealing convex ring 513 is tightly attached to the sealing plug 6 for sealing the air hole; as shown in fig. 2, when the pressure is released, the power output mechanism works to drive the pushing screw 2 to rotate, because the nut 3 is in threaded connection with the pushing screw 2, and the threaded sleeve 5 of the mounting nut 3 is in circumferential limiting axial sliding connection with the guide bracket 1, the threaded sleeve 5 can be pushed to move axially (the valve opening state is that the valve opening state moves leftwards), after the threaded sleeve 5 moves leftwards for a certain distance, the sealing convex ring 513 is separated from the sealing plug 6, gas enters from a gap between the sealing convex ring 513 and the sealing plug 6 and then enters the rear after passing through the air hole on the sealing framework 8, so that the pressure release of the air inlet end is realized, and the valve opening is easier; in the open state shown in fig. 3, the threaded sleeve 5 continues to move leftwards until the sealing skeleton 8 is pushed leftwards by the self-provided screw 7 until a passage sufficient for gas communication is formed between the other end surface of the sealing plug 6 and the housing 4.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims

1. A pressure relief structure for a motor valve, comprising:

2. The pressure relief structure for a motor valve according to claim 1, wherein the sealing assembly includes a sealing plug and a sealing skeleton, the connecting hole and the air hole are provided on the sealing skeleton, the sealing plug is sleeved outside the sealing skeleton, and leaks out of the air hole and the connecting hole on the sealing skeleton, and the first end of the first connecting portion is connected with the sealing plug in a mating manner.

3. The pressure relief structure for a motor valve according to claim 2, wherein the first end portion of the first connecting portion is provided with an axially protruding sealing collar, and the sealing collar is cooperatively connected with the sealing plug.

4. The pressure relief structure for a motor valve according to claim 1, wherein the radial outward protrusion provided at the second end of the second connecting portion is a self-holding screw, and a screw hole is provided inside the second end of the second connecting portion, and the screw hole is in threaded connection with the self-holding screw.

5. The pressure release structure for a motor valve according to claim 1, wherein the guide block is a locking screw, a radial through hole is correspondingly formed in the first connecting portion, a clamping hole is formed in the nut, the head of the locking screw is slidably mounted in the guide groove, and the rod portion of the locking screw is arranged through the radial through hole and the clamping hole.