CN213332552U

CN213332552U - Simple axial flow type one-way valve

Info

Publication number: CN213332552U
Application number: CN202021427313.2U
Authority: CN
Inventors: 刘仁华
Original assignee: Guangxi Yulin Kunda Machinery Manufacturing Co ltd
Current assignee: Guangxi Yulin Kunda Machinery Manufacturing Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-06-01
Anticipated expiration: 2030-07-20

Abstract

The utility model discloses a simple and easy axial-flow check valve, include: the valve body is provided with a cavity with an opening at the bottom, and the top of the cavity is provided with a fluid inlet; the valve seat plate is arranged at the bottom of the cavity and is provided with a first flow guide gap; the valve plate is arranged in the cavity in a vertically sliding mode and is positioned above the valve seat plate, and an elastic mechanism is arranged between the valve plate and the valve seat plate; the top of the valve plate is convexly provided with a connecting part which is matched and connected with the fluid inlet, the periphery of the valve plate is convexly provided with a plurality of sliding blocks which are uniformly distributed along the circumferential direction, the sliding blocks can slide up and down along the side wall of the cavity, and a second flow guide gap is formed between every two adjacent sliding blocks in a surrounding manner; under normal conditions, the valve plate moves upwards under the action of the elastic mechanism and blocks the fluid inlet. Adopt the utility model discloses a valve plate can enough play the guide effect, can increase fluid flow area again, and the structure of check valve is simplified in the fluidic flow of being convenient for.

Description

Simple axial flow type one-way valve

Technical Field

The utility model relates to a check valve technical field, in particular to simple and easy axial-flow type check valve.

Background

The air compressor, the water pump, the oil pump, the pipeline and other equipment are all provided with one-way valves for controlling the one-way flow of fluid. The check valve is also called as a check valve or a check valve, fluid can only flow along the water inlet, but medium at the water outlet can not flow back, and the check valve is used for preventing reverse flow of oil flow in a hydraulic system or preventing reverse flow of compressed air in a pneumatic system. The check valve can be widely applied in the field of fluid control, and damage caused by backflow or backflow of fluid is avoided. A valve core of the existing one-way valve is matched with a cavity of a valve body so that the valve core can reciprocate in the cavity, for example, a patent document with an authorization publication number of CN205824293U discloses a one-way valve, a flow guide channel formed between the outer side surface of the valve core and the inner side surface of the cavity is small, and thus the fluid flow area of the one-way valve is small; and in order to ensure that the valve core does not deviate during reciprocating motion, the valve core is provided with a guide post, and the valve body is provided with a guide hole, so that the guide post can reciprocate along the guide hole, and the structure is complex.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple and easy axial-flow type check valve to overcome the shortcoming that current check valve flow area is little and the structure is complicated.

In order to achieve the above object, the utility model provides a simple and easy axial-flow type check valve, include: the valve body is provided with a cavity with an opening at the bottom, and the top of the cavity is provided with a fluid inlet; the valve seat plate is arranged at the bottom of the cavity and is provided with a first flow guide gap; the valve plate is arranged in the cavity in a vertically sliding mode and is positioned above the valve seat plate, and an elastic mechanism is arranged between the valve plate and the valve seat plate; the top of the valve plate is convexly provided with a connecting part which is matched and connected with the fluid inlet, the periphery of the valve plate is convexly provided with a plurality of sliding blocks which are uniformly distributed along the circumferential direction, the sliding blocks can slide up and down along the side wall of the cavity, and a second flow guide gap is defined by the adjacent sliding blocks; under the normal state, the valve plate moves upwards under the action force of the elastic mechanism and blocks the fluid inlet, and when the valve plate is subjected to external action force which is larger than the action force of the elastic mechanism, the valve plate can overcome the action force of the elastic mechanism to move downwards and open the fluid inlet.

Preferably, in the above technical solution, the fluid inlet is in a shape of a cone with a small top and a large bottom, and the connecting portion is also in a shape of a cone with a small top and a large bottom.

Preferably, in the above technical solution, a sealing member is disposed between the connecting portion and the fluid inlet.

Preferably, in the above technical solution, each of the sliders is shaped like a T with an opening facing downward.

Preferably, among the above-mentioned technical scheme, the middle part of valve plate is the protruding first lug that is equipped with downwards, the middle part of valve seat board is the protruding second lug that is equipped with upwards, first lug with relative and interval distribution about the second lug, elastic mechanism is the spring, the spring housing is located first lug with between the second lug.

Preferably, in the above technical solution, the first bump and the second bump are both cylindrical.

Preferably, in the above technical scheme, the valve body with the cavity all is cylindric, just the valve plate is the disc.

Preferably, in the above technical solution, the outer circumferential surface of the valve body is a smooth surface or a threaded surface.

Preferably, in the above technical scheme, the valve seat plate is in a strip shape, an annular groove is concavely formed at the bottom of the side wall of the cavity, and the valve seat plate is transversely arranged in the annular groove and is in interference fit connection with the annular groove; the first flow guide gap is defined between the side face of the valve seat plate and the side wall of the cavity.

Preferably, in the above technical scheme, the valve body, the valve seat board with the valve plate all adopts metal stamping forming technology to make and forms.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the valve seat plate of the utility model is provided with a first flow guiding gap, the periphery of the valve plate is provided with a plurality of sliders which are uniformly distributed along the circumferential direction of the valve plate, and the sliders play a role in guiding the up-and-down sliding of the valve plate so as to ensure that the valve plate can normally open and close the fluid inlet, avoid the valve plate from shifting in the up-and-down sliding process and avoid the phenomenon that the fluid inlet cannot be normally opened and closed, and save the structures of a guide post and a guide hole so as to simplify the structure of the check valve; and a second flow guide gap is formed between two adjacent sliding blocks in a surrounding manner, so that the fluid flow area of the one-way valve can be increased, and the fluid can flow conveniently.

2. The utility model discloses a valve plate is equipped with first lug, and the valve seat board is equipped with the second lug, and relative and interval distribution from top to bottom of first lug and second lug to make the spring can overlap and establish between first lug and second lug, the installation of the spring of being convenient for, and can play certain guide effect to the valve plate.

3. The utility model discloses a valve body is cylindricly, and the outer periphery of valve body is smooth surface or screw thread face, and the valve body of being convenient for is installed in the rubber tube or with pipeline threaded connection.

4. The utility model discloses a valve seat board is the bar form, and encloses into first water conservancy diversion clearance between the side of valve seat board and the lateral wall of cavity to increase the area in first water conservancy diversion clearance, the fluidic flow of being convenient for, and the bottom of the lateral wall of cavity has seted up the ring channel, the installation of valve seat board of can being convenient for.

5. The utility model discloses a valve body, disk seat board and valve plate all adopt metal stamping forming technology to make and form, can one-time stamping forming, and the manufacturing process is simple and convenient, reduce cost.

Drawings

FIG. 1 is a schematic view of the main structure of the simple axial flow check valve according to the present invention

FIG. 2 is a schematic view of the explosion structure at a viewing angle of the simple axial flow check valve according to the present invention

Fig. 3 is an exploded view of another perspective of a simple axial flow check valve according to the present invention.

Fig. 4 is a schematic structural view of a valve plate according to the present invention.

Description of the main reference numerals:

1-valve body, 11-fluid inlet, 12-cavity, 13-annular groove, 2-valve plate, 21-connecting part, 22-sliding block, 23-first projection, 24-second flow guide gap, 3-spring, 4-valve seat plate, 41-second projection and 42-first flow guide gap.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Fig. 1 to 4 are schematic structural views showing a simple axial flow check valve according to a preferred embodiment of the present invention, which includes a valve body 1, a valve seat plate 4, and a valve plate 2. Referring to fig. 1 to 4, the valve body 1 is provided with a cavity 12 with an open bottom, and a fluid inlet 11 is opened at the top of the cavity 12 to facilitate fluid flowing from the fluid inlet 11 into the cavity 12. The valve seat plate 4 is disposed at the bottom of the cavity 12, and a first flow guiding gap 42 is disposed on the valve seat plate 4, so that the fluid in the cavity 12 flows out from the first flow guiding gap 42. The valve plate 2 is installed in the cavity 12 in a vertically slidable manner and is positioned above the valve seat plate 4, and an elastic mechanism is provided between the valve plate 2 and the valve seat plate 4. The protruding connecting portion 21 that is connected with the cooperation of fluid inlet 11 that is equipped with in top of valve plate 2, so that open and close fluid inlet 11, and the periphery of valve plate 2 is equipped with a plurality of evenly distributed's slider 22 along its circumference direction evagination, slider 22 can slide from top to bottom along the lateral wall of cavity 12, slide from top to bottom to valve plate 2 and play the guide effect, so that valve plate 2 can normally open and close fluid inlet 11, avoid valve plate 2 to take place the skew at the in-process that slides from top to bottom, the phenomenon of unable normal open and close fluid inlet 11 appears, the structure of the guide post and the guiding hole of current check valve is saved, in order to simplify the check valve structure. And a second guide gap 24 is defined between the adjacent sliding blocks 22, so that the fluid flow area of the one-way valve can be increased, and the fluid can flow conveniently. In a normal state, the elastic mechanism is in a compressed state, and the valve plate 2 moves upwards under the action of the elastic mechanism and blocks the fluid inlet 11; when the acting force of the external fluid on the valve plate 2 is greater than the acting force of the elastic mechanism, the valve plate 2 can overcome the acting force of the elastic mechanism to move downwards and open the fluid inlet 11, so that the fluid can flow into the cavity 12 from the fluid inlet 11, sequentially flow through the second flow guide gap 24 and the first flow guide gap 42, and finally flow out from the bottom outlet of the cavity 12; when fluid flows into the chamber 12 from the bottom opening of the chamber 12, the fluid gives an upward force to the valve plate 2, which force, together with the resilient means, drives the valve plate 2 further to close the fluid inlet 11, so that fluid flowing in from the bottom opening of the chamber 12 cannot flow out from the fluid outlet.

Referring to fig. 1 and 2, the fluid inlet 11 may have a cylindrical shape or a conical shape with a small top and a large bottom, and the connecting portion 21 may also have a cylindrical shape or a conical shape with a small top and a large bottom, and preferably, the fluid inlet 11 has a conical shape with a small top and a large bottom, and the connecting portion 21 also has a conical shape with a small top and a large bottom, so as to further improve the stability of the matching connection between the connecting portion 21 and the fluid inlet 11.

Referring to fig. 1 and 2, a sealing member is preferably disposed between the connection portion 21 and the fluid inlet 11 to improve the sealing performance of the connection between the connection portion 21 and the fluid inlet 11, prevent fluid from flowing out from a gap therebetween when the fluid flows in a reverse direction, and improve the check performance of the check valve.

Referring to fig. 1 to 4, each of the sliders 22 is preferably shaped like a T with an opening facing downward, that is, the end of each slider 22 is bent downward to increase the contact surface with the side wall of the cavity 12, so as to improve the guiding performance of the slider 22, further prevent the valve plate 2 from being shifted during the up-and-down sliding process, and normally open and close the fluid inlet 11. The number of the sliders 22 is preferably 4, which further improves the stability of the sliding of the valve plate 2.

Referring to fig. 1 to 3, preferably, the valve plate 2 has a first protrusion 23 protruding downward at a middle portion thereof, the valve seat plate 4 has a second protrusion 41 protruding upward at a middle portion thereof, the first protrusion 23 and the second protrusion 41 are opposite to each other and spaced from each other, and a distance between the first protrusion 23 and the second protrusion 41 is preferably greater than a height of the connecting portion 21, so as to facilitate opening and closing of the fluid inlet 11. Wherein, the elastic mechanism is the spring 3, and the spring 3 is located between first lug 23 and the second lug 41 in the cover, and on the first lug 23 was located in the upper end cover of spring 3 promptly, the second lug 41 was located in the lower pot head of spring 3, the installation of the spring 3 of being convenient for, and can play certain guide effect to valve plate 2. It is further preferred that the first projection 23 and the second projection 41 each have a cylindrical shape corresponding to the inner cavity of the spring 3.

Referring to fig. 1 to 3, preferably, the valve body 1 and the cavity 12 are each cylindrical, and the valve plate 2 is disc-shaped to facilitate the installation of the check valve. And further preferably, the outer circumferential surface of the valve body 1 is a smooth surface or a threaded surface, when the outer circumferential surface of the valve body 1 is a smooth surface, the one-way valve can be conveniently installed in a rubber hose; when the outer circumferential surface of the valve body 1 is a threaded surface, the one-way valve can be conveniently in threaded connection with a pipeline.

Referring to fig. 1 to 4, preferably, the valve seat plate 4 is in a strip shape, and the bottom of the side wall of the cavity 12 is concavely provided with an annular groove 13, the axis of the annular groove 13 is collinear with the axis of the cavity 12, and the valve seat plate 4 is transversely arranged in the annular groove 13 and is in interference fit connection with the annular groove 13 so as to facilitate the installation of the valve plate 2 seat. And a first flow guide gap 42 is defined between the side surface of the valve seat plate 4 and the side wall of the cavity 12 to increase the area of the first flow guide gap 42, so as to facilitate the flow of the fluid. The area of all the first flow guiding gaps 42 may be larger than the area of all the second flow guiding gaps 24, may be smaller than the area of all the second flow guiding gaps 24, and may be equal to the area of all the second flow guiding gaps 24. To facilitate the flow of fluid, it is preferred that the area of all of the first guide gaps 42 be smaller than the area of all of the second guide gaps 24.

Referring to fig. 1 to 4, preferably, the valve body 1, the valve seat plate 4 and the valve plate 2 are all manufactured by a metal stamping forming process, and can be stamped at one time, the manufacturing process is simple and convenient, and the cost is reduced.

The one-way valve of the utility model has simple and convenient manufacturing process, can reduce the production cost, and the slide block 22 structure is arranged around the valve plate 2, can facilitate the valve plate 2 to slide up and down in the cavity 12, plays a role in guiding, avoids the valve plate 2 from shifting in the process of sliding up and down, thereby the phenomenon that the fluid inlet 11 can not be normally opened and closed is generated, and simplifies the structure of the one-way valve; and a second guide gap 24 is enclosed between two adjacent sliding blocks 22, so that the fluid flow area of the one-way valve can be increased, and the fluid can flow conveniently.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A simple axial flow check valve, comprising:

the valve body is provided with a cavity with an opening at the bottom, and the top of the cavity is provided with a fluid inlet;

the valve seat plate is arranged at the bottom of the cavity and is provided with a first flow guide gap; and

a valve plate which is installed in the cavity in a manner of sliding up and down and is positioned above the valve seat plate, wherein an elastic mechanism is arranged between the valve plate and the valve seat plate; the top of the valve plate is convexly provided with a connecting part which is matched and connected with the fluid inlet, the periphery of the valve plate is convexly provided with a plurality of sliding blocks which are uniformly distributed along the circumferential direction, the sliding blocks can slide up and down along the side wall of the cavity, and a second flow guide gap is defined by the adjacent sliding blocks; under the normal state, the valve plate moves upwards under the action force of the elastic mechanism and blocks the fluid inlet, and when the valve plate is subjected to external action force which is larger than the action force of the elastic mechanism, the valve plate can overcome the action force of the elastic mechanism to move downwards and open the fluid inlet.

2. The simple axial flow check valve as recited in claim 1, wherein the fluid inlet is tapered with a small top and a large bottom, and the connection portion is also tapered with a small top and a large bottom.

3. The simple axial flow check valve of claim 1 wherein a seal is disposed between the connection portion and the fluid inlet.

4. The simple axial flow check valve as recited in claim 1, wherein each of said slides has a T-shape with an opening facing downward.

5. The simple axial flow one-way valve according to claim 1, wherein a first protrusion is protruded downward from the middle of the valve plate, a second protrusion is protruded upward from the middle of the valve seat, the first protrusion and the second protrusion are opposite to each other and spaced apart from each other, the elastic mechanism is a spring, and the spring is sleeved between the first protrusion and the second protrusion.

6. The simple axial flow check valve of claim 5, wherein the first and second protrusions are cylindrical.

7. The simple axial flow check valve of claim 1, wherein the valve body and the cavity are both cylindrical and the valve plate is disc-shaped.

8. The simple axial flow check valve of claim 7, wherein the outer circumferential surface of the valve body is a smooth surface or a threaded surface.

9. The simple axial flow one-way valve according to claim 1, wherein the valve seat plate is a strip shape, an annular groove is concavely arranged at the bottom of the side wall of the cavity, and the valve seat plate is transversely arranged in the annular groove and is in interference fit connection with the annular groove; the first flow guide gap is defined between the side face of the valve seat plate and the side wall of the cavity.

10. The simple axial flow check valve of claim 1, wherein the valve body, the valve seat plate and the valve plate are all manufactured by a metal stamping forming process.