One-way valve

Abstract

The one-way valve is characterized in that the one-way valve comprises a guide frame, a valve element and a valve port part, the valve port part comprises a valve port channel, the guide frame comprises a main body part and a stop part, the main body part comprises a bottom plate part, a first guide section and a second guide section, and the bottom plate part is connected with the first guide section and the second guide section; the end, away from the bottom plate part, of the first guide section is not connected with the end, away from the bottom plate part, of the second guide section, a fluid channel is formed between the first guide section and the second guide section, the valve element is in sliding fit with the first guide section and the second guide section, and the stop part protrudes from the bottom plate part to the valve port part. The one-way valve comprises a first working position and a second working position, when the one-way valve is located at the first working position, the valve element abuts against the valve port part, when the one-way valve is located at the second working position, the valve element abuts against the stop part, and the fluid channel communicates with the valve port channel. In addition, the fluid channel between the first guide section and the second guide section does not need to be machined additionally, meanwhile, the stop part can limit the stroke of the valve element, machining is easy, and the manufacturing cost is further reduced.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular, to a one-way valve. Background Art

[0002] Figure 1 The present invention is a schematic diagram of the structure of a one-way valve, which is a one-way pressure relief valve. The one-way valve includes a valve body 1', a valve seat 2', a retaining ring 3', a diaphragm 4' and other parts. The retaining ring 3' of the structure must not only realize the stopping function of the diaphragm 4' but also meet the flow demand. Generally, it is first stretched into a cup-shaped body, and the cup-shaped bottom is used as a stopper. A flow through hole is punched on the side wall of the cup-shaped body, which is difficult to process. Utility Model Content

[0003] The technical problem to be solved by the present application is how to simplify the structure of the retaining ring 3' and reduce the difficulty of processing, thereby further achieving cost reduction.

[0004] The present application provides a one-way valve, including a guide frame, a valve core, and a valve mouth portion, the valve mouth portion including a valve mouth channel, the guide frame including a main body portion and a stop portion, the main body portion including a bottom plate portion, a first guide section, and a second guide section, the bottom plate portion connects the first guide section and the second guide section, an end portion of the first guide section away from the bottom plate portion is not connected to an end portion of the second guide section away from the bottom plate portion, a fluid channel is included between the first guide section and the second guide section, the valve core is slidably matched with the first guide section and the second guide section, the stop portion protrudes from the bottom plate portion toward the valve mouth portion, the valve core includes a first working position and a second working position, when in the first working position, the valve core is in contact with the valve mouth portion, when in the second working position, the valve core is in contact with the stop portion, and the fluid channel is connected to the valve mouth channel.

[0005] By adopting the method in the present application, the guide frame includes a first guide segment and a second guide segment, and the fluid channel between the first guide segment and the second guide segment does not need to be processed separately, so that the guide frame is easy to process and the material cost can be reduced compared with the background technology.

[0006] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0008] Figure 1 It is a structural schematic diagram of a one-way valve in the background technology;

[0009] Figure 2 It is a structural schematic diagram of an embodiment of the present application;

[0010] Figure 3a yes Figure 2 A three-dimensional schematic diagram of the middle guide frame;

[0011] Figure 3b yes Figure 2 A schematic diagram of one direction of the middle guide frame;

[0012] Figure 4 yes Figure 2 Assembly diagram of the middle valve seat, guide frame and diaphragm;

[0013] Figure 5 yes Figure 2 A schematic cross-sectional view of the middle valve seat;

[0014] Figure 6 It is a cross-sectional view of a valve seat according to another embodiment.

[0015] Attached Figure 2-Figure 6 In the figure, the reference numerals are described as follows:

[0016] 110, first valve body, 120, second valve body, 100, valve port channel, 200, fluid channel;

[0017] 2. valve seat, 210, base portion, 220, mounting and positioning portion, 230, valve port portion, 2110, drainage portion;

[0018] 3. Guide frame, 330, main body, 340, stopper, 3330, bottom plate, 3331, first side wall, 3332, second side wall, 3310, first guide section, 3320, second guide section, 3340, first bending section, 3350, second bending section, 3410, first stopper, 3411, first transition section, 3412, first stopper, 3420, second stopper, 3421, second transition section, 3422, second stopper;

[0019] 4. Valve core / diaphragm. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the application more clear, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] See also Figure 2 , Figure 4As shown in the present application, a one-way valve is provided, including a first valve body 110, a second valve body 120, a guide frame 3, a valve core 4, and a valve seat 2. The valve seat 2 includes a valve mouth portion 230, and the valve mouth portion 230 includes a valve mouth channel 100. The guide frame 3 includes a main body portion 330 and a stop portion 340. The main body portion 330 includes a bottom plate portion 3330, a first guide section 3310, and a second guide section 3320. The bottom plate portion 3330 connects the first guide section 3310 and the second guide section 3320. An end portion of the first guide section 3310 away from the bottom plate portion 3330 is not connected to an end portion of the second guide section 3320 away from the bottom plate portion 3330, that is, in the circumferential direction of the guide frame 3, an end portion of the first guide section 3310 is not connected to an end portion of the second guide section 3320. The first guide section 3310 and the second guide section 3320 include a fluid channel 200, the valve core 4 is slidably matched with the first guide section 3310 and the second guide section 3320, after the valve core 4 leaves the valve mouth 230, the fluid channel 200 is connected with the valve mouth channel 100, the stopper 340 protrudes from the bottom plate 3330 toward the valve mouth 230, and the valve core 4 includes a first working position and a second working position. In the first working position, the valve core 4 abuts against the valve mouth 230, and in the second working position, the valve core 4 abuts against the stopper 340. In this way, the valve core 4 is limited to the second working position by the stopper 340. In the solution of the present application, the valve core 4 can be specifically a diaphragm 4. That is, the diaphragm 4 reciprocates between the valve mouth 230 and the stopper 340 along the axial direction of the one-way valve.

[0022] In a specific embodiment, Figure 3a , Figure 3b As shown, the first guide section 3310 and the second guide section 3320 are arranged opposite to each other, and a fluid channel 200 is included between the first guide section 3310 and the second guide section 3320. When the valve core 4 is in the second working position, the fluid channel 200 is connected to the valve port channel 100. In the circumference of the one-way valve, the stop portion 340 is located between the first guide section 3310 and the second guide section 3320. The stop portion 340 can limit the displacement of the diaphragm 4 in the direction away from the valve port portion 230.

[0023] Further, the bottom plate portion 3330 includes a first side wall portion 3331 and a second side wall portion 3332, the first guide section 3310 and the second guide section 3320 protrude from the bottom plate portion 3330 toward the valve mouth portion 230, the stopper portion 340 includes a first stopper portion 3410 and a second stopper portion 3420, the first stopper portion 3410 protrudes from the first side wall portion 3331 toward the valve mouth portion 230, and the second stopper portion 3420 protrudes from the second side wall portion 3332 toward the valve mouth portion 230. In the solution of the present application, the guide frame 3 is made of stainless steel, specifically a stainless steel plate, which is directly stamped and bent. The stainless steel plate is formed into the main body 330 by stamping. The main body 330 is roughly in the shape of a long strip. The bottom plate 3330 is preset by the mold. The bottom plate 3330 is in the shape of a runway, including two oppositely arranged long sides and two oppositely arranged short sides. The two short sides of the bottom plate 3330 are bent to form a first guide section 3310 and a second guide section 3320. The first guide section 3310 is arranged opposite to the second guide section 3320. The two oppositely arranged long sides are the first side wall 3331 and the second side wall 3332, so the first stopper 3410 is arranged opposite to the second stopper 3420. It can be seen that in the circumferential direction of the guide frame 3, the two stoppers and the two guide sections are arranged at intervals from each other.

[0024] Further, the first stopper 3410 includes a first transition section 3411 and a first stopper 3412. The width of the first stopper 3412 is defined as L1 and the width of the first transition section 3411 is defined as M1 along the radial direction of the valve mouth 230, and L1 is greater than M1. The second stopper 3420 includes a second transition section 3421 and a second stopper 3422. The width of the second stopper 3422 is defined as L2 and the width of the second transition section 3421 is defined as M2 along the radial direction of the valve mouth 230, and L2 is greater than M2. With such a configuration, when the diaphragm 4 is in the second working position, that is, when the diaphragm 4 abuts against the stopper 340, the abutting area between the diaphragm 4 and the stopper 340 is increased, the action reliability of the diaphragm 4 is improved, and the diaphragm 4 is prevented from turning over and getting stuck during movement. When the valve core 4 is in the first working position, that is, the one-way valve is fully closed, the diaphragm 4 abuts against the valve port 230. When the valve core 4 is in the second working position, that is, the one-way valve is fully open, the diaphragm 4 abuts against the first stop section 3412 and the second stop section 3422.

[0025] The guide frame 3 forms a bent portion by bending the plate, such as the guide frame 3 of the present application, wherein the first guide section 3310 and the second guide section 3320 are formed by bending 90° from the bottom plate section 3330 toward the valve mouth section 230, the bottom plate section 3330 and the first guide section 3310 and the second guide section 3320 are perpendicular to each other, the first guide section 3310 and the second guide section 3320 are arranged opposite to each other, the main body 330 also includes a first bending section 3340 and a second bending section 3350, the first bending section 3340 connects the bottom plate section 3330 and the first guide section 3310, the second bending section 3350 connects the bottom plate section 3330 and the second guide section 3320. In the same way, the first stopper 3410 and the second stopper 3420 are formed by bending 90 degrees from the bottom plate 3330 toward the valve opening 230, and the end surfaces of the first stopper section 3412 and the second stopper section 3422 facing the valve opening 230 are closer to the valve opening 230 than the first bending section 3340 and the second bending section 3350. In this way, when the diaphragm 4 abuts against the stopper 340, the diaphragm 4 will not move to the area where the first bending section 3340 and the second bending section 3350 are located, and the diaphragm 4 can still maintain balance, and the abutment is reliable and not easy to tilt. The guide frame 3 of the present scheme is formed by bending a plate to form a first guide section 3310, a second guide section 3320, a first stop portion 3410, and a second stop portion 3420. At the same time, the two stop portions and the two guide sections are arranged at intervals from each other. In this way, a fluid channel 100 is naturally formed between the first guide section 3310 and the second guide section 3320, and there is no need to add additional processing methods such as punching or grooving to provide a fluid channel. The processing is simple, the production process is simplified, and the manufacturing cost is further reduced.

[0026] Furthermore, if Figure 4 As shown, the diaphragm 4 is in the shape of a disc, and in the circumferential direction of the guide frame 3, the cross section of the inner wall of the first guide segment 3310 is an arc concentric with the diaphragm 4, and the cross section of the inner wall of the second guide segment 3320 is an arc concentric with the diaphragm 4. The inner wall of the first guide segment 3310 and the inner wall of the second guide segment 3320 form a sliding wall of the diaphragm 4. In the sheet stamping or bending process, it is easy to bend the sheet into an inner arc-shaped guide segment, and ensure that the inner wall of the first guide segment 3310 is concentric with the diaphragm 4, and the inner wall of the second guide segment 3320 is concentric with the diaphragm 4. Such an arrangement improves the sliding fit between the slide 4 and the guide frame 3, thereby also improving the sliding reliability of the slide 4.

[0027] Furthermore, the diameter of the diaphragm 4 is defined as W1, and the travel distance between the first working position and the second working position of the diaphragm 4 is defined as W2, then W1 is greater than W2. In this way, when the diaphragm 4 is in the second working position, that is, when the diaphragm 4 is at the farthest distance from the valve mouth 230, or during the entire working stroke movement, the diaphragm 4 will not be stuck in the valve mouth 230 even if it turns over, thereby further ensuring the product's operational reliability.

[0028] like Figure 6 As shown, this is a valve seat 2 of a specific embodiment. The valve seat 2 of this embodiment is processed from a metal sheet, specifically stamped from a stainless steel sheet. The valve seat 2 is cylindrical and includes a base portion 210 and an installation and positioning portion 220. The valve seat 2 is fixedly connected to the first valve body 110. The base portion 210 is fixedly connected to the first valve body 110, specifically by welding; or the valve seat 2 and the first valve body 110 are an integral part, such as a pipe directly stretched and formed. The first guide section 3310 and the second guide section 3320 are fixedly matched with the installation and positioning portion 220, specifically by welding. Of course, other solutions such as threaded fixing and snap-on fixing are also feasible. The end of the installation and positioning portion 220 includes a valve port portion 230, and the inner wall of the valve seat 2 is connected to the valve port channel 100. The wall of the mounting and positioning portion 220 is adapted to the inner wall of the first guide segment 3310 and the inner wall of the second guide segment 3320 , that is, the first guide segment 3310 and the second guide segment 3320 are externally mounted on the mounting and positioning portion 220 and are welded and fixed to the guide frame 3 through the mounting and positioning portion 220 .

[0029] like Figure 5 As shown, this is another embodiment of the valve seat 2. The valve seat 2 of this embodiment is made of metal profiles, specifically, made of stainless steel rods. The first valve body 110, the second valve body 120, and the valve seat 2 are fixedly connected. The guide frame 3 is fixedly connected to the valve seat 2, or the guide frame 3 is fixedly connected to the second valve body 120. The base portion 210 also includes a drainage portion 2110, and the channel wall of the valve port channel 100 is connected to the inner wall of the drainage portion 2110.

[0030] Furthermore, the inner wall of the drainage portion 2110 gradually increases from the inner wall of the valve mouth portion 230 toward the direction away from the valve mouth portion 230, and the length of the drainage portion 2110 is greater than the length of the installation positioning portion 220. This arrangement makes the flow channel setting smoother, reduces flow resistance, and improves product performance.

[0031] The first valve body 110, the second valve body 120, the valve seat 2, and the diaphragm 4 are all made of stainless steel. The first valve body 110, the second valve body 120, and the valve seat 2 are welded and fixed, and the guide frame 3 is welded and fixed to the valve seat 2, or the guide frame 3 is welded and fixed to the second valve body 120. The welding and fixing described in this application can specifically be laser welding.

[0032] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent. It should be pointed out that, for a person of ordinary skill in the art, several modifications and controls can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A one-way valve, characterized in that: The invention comprises a guide frame, a valve core and a valve mouth part, wherein the valve mouth part comprises a valve mouth channel, the guide frame comprises a main body part and a stopper part, the main body part comprises a bottom plate part, a first guide section and a second guide section, the bottom plate part connects the first guide section and the second guide section, an end part of the first guide section away from the bottom plate part is not connected with an end part of the second guide section away from the bottom plate part, a fluid channel is comprised between the first guide section and the second guide section, the valve core is slidably matched with the first guide section and the second guide section, the stopper part protrudes from the bottom plate part toward the valve mouth part, the valve core comprises a first working position and a second working position, when in the first working position, the valve core is in contact with the valve mouth part, when in the second working position, the valve core is in contact with the stopper part, and the fluid channel is communicated with the valve mouth channel.

2. The one-way valve according to claim 1, characterized in that: The bottom plate portion includes a first side wall portion and a second side wall portion, the first guide section and the second guide section protrude from the bottom plate portion toward the valve mouth portion, the stop portion includes a first stop portion and a second stop portion, the first stop portion protrudes from the first side wall portion toward the valve mouth portion, and the second stop portion protrudes from the second side wall portion toward the valve mouth portion.

3. The one-way valve according to claim 2, characterized in that: The first stop portion includes a first transition section and a first stop section. Along the radial direction of the valve mouth, the width of the first stop section is defined as L1, and the width of the first transition section is defined as M1, then L1 is greater than M1. The second stop portion includes a second transition section and a second stop section. Along the radial direction of the valve mouth, the width of the second stop section is defined as L2, and the width of the second transition section is defined as M2, then L2 is greater than M2. The valve core is a diaphragm, and the diaphragm is slidably matched with the first guide section and the second guide section. When in the second working position, the diaphragm abuts against the first stop section and the second stop section.

4. The one-way valve according to claim 3, characterized in that: The guide frame is made of stainless steel and is a sheet metal stamping part. The first guide section and the second guide section are formed by bending from the outer edge of the bottom plate portion. The bottom plate portion and the first guide section are vertically arranged, and the bottom plate portion and the second guide section are vertically arranged. The first guide section and the second guide section are relatively arranged. The main body portion also includes a first bending portion and a second bending portion. The first bending portion connects the bottom plate portion and the first guide section, and the second bending portion connects the bottom plate portion and the second guide section. The end surfaces of the first stop section and the second stop section facing the valve mouth portion are closer to the valve mouth portion than the first bending portion and the second bending portion.

5. The one-way valve according to claim 4, characterized in that: The diaphragm is in a disc shape, the inner wall of the first guide section is an arc concentric with the diaphragm, the inner wall of the second guide section is an arc concentric with the diaphragm, and the inner wall of the first guide section and the inner wall of the second guide section form a sliding wall of the diaphragm.

6. The one-way valve according to claim 5, characterized in that: The diameter of the diaphragm is defined as W1, and the travel distance of the diaphragm between the first working position and the second working position is defined as W2, then W1 is greater than W2.

7. The one-way valve according to any one of claims 1 to 6, characterized in that: The one-way valve includes a first valve body and a valve seat. The valve seat is a sheet metal stamping part. The valve seat includes a base portion and an installation and positioning portion. The base portion is fixedly connected to the first valve body, or the base portion and the first valve body are an integral part. The guide frame is fixedly connected to the valve seat. The inner wall of the first guide section and the inner wall of the second guide section are adapted to the outer wall of the installation and positioning portion. The end of the installation and positioning portion includes a valve port portion. The inner wall of the valve seat is connected to the channel wall of the valve port channel.

8. The one-way valve according to any one of claims 1 to 6, characterized in that: The one-way valve includes a first valve body, a second valve body and a valve seat, the valve seat is a metal profile processed part, the first valve body, the second valve body and the valve seat are fixedly connected, the guide frame is fixedly connected to the valve seat, or the guide frame is fixedly connected to the second valve body, the valve seat includes a base portion and an installation and positioning portion, the base portion includes a drainage portion, and the inner wall of the valve port channel is connected to the inner wall of the drainage portion.

9. The one-way valve according to claim 8, characterized in that: The inner wall of the drainage portion gradually increases from the valve opening portion toward a direction away from the valve opening portion, and the length of the drainage portion is greater than the length of the installation positioning portion.

10. The one-way valve according to claim 8, characterized in that: The first valve body, the second valve body, the valve seat, and the valve core are all made of stainless steel. The first valve body, the second valve body, and the valve seat are welded and fixed. The guide frame is welded and fixed to the valve seat, or the guide frame is welded and fixed to the second valve body.

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