One-way valve

Abstract

The utility model relates to a one-way valve which is characterized in that an included angle alpha between the axis of a communicating hole and the axis of a flow channel is more than 15 degrees and less than or equal to 45 degrees, and one end of the axis of the communicating hole is inclined from a moving part and the other end of the axis of the communicating hole to the direction far away from the axis of the flow channel; the extension lines of the axes of the communicating holes intersect on the inner wall of the flow channel. When fluid flows back, impact force generated when the fluid passes through the valve element is dispersed and cannot completely act on the valve element, excessive abrasion of the valve element and the sealing ring is avoided, pressure borne by the sealing ring and deformation are reduced, the damage probability of the sealing ring is reduced, and the service life of the sealing ring is prolonged. The direct impact of backflow fluid on the valve element is reduced, the pressure on the sealing ring is reduced, and therefore the sealing effect is improved. The problems that in the prior art, the sealing effect is poor, a sealing ring is prone to being damaged, and stress on a valve element is too large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way valves, in particular to a one-way valve. Background Art

[0002] The function of a one-way valve is to allow the fluid to flow in one direction (from the inlet to the outlet) and prevent the fluid from flowing in the opposite direction (from the outlet to the inlet). The valve body controls the flow direction of the fluid to prevent the fluid from flowing back and protect the equipment from being affected by the fluid backflow.

[0003] The existing one-way valve is usually composed of a valve body, a valve core and a spring. The fluid entering the inlet pushes the valve core to move when it reaches a certain pressure, so that the valve core moves in the cavity of the valve body (away from the inlet) to connect the inlet and the outlet. When the pressure of the fluid is not enough to push the valve core, the spring will push the valve core to the side close to the inlet under the action of elastic force, so that the valve core abuts against the cavity of the valve body, so that a seal is formed between the valve core and the inlet, so as to prevent the outlet from connecting with the inlet, thereby preventing the fluid from entering the inlet from the outlet.

[0004] However, the existing valve body and valve core are in abutment with each other, and due to the rigid contact, there is a gap at the contact position, resulting in poor sealing effect. The current solution is to set a sealing ring here to increase the sealing effect.

[0005] Under the action of the spring, the valve core will exert a large force on the sealing ring. After a long time, the sealing ring will be deformed, and in severe cases, the sealing ring will rupture, resulting in poor sealing effect of the sealing ring. Secondly, the reflux fluid directly acts on the valve core, which will further increase the force of the valve core on the sealing ring, making the sealing ring more easily damaged.

[0006] Moreover, the channels between the existing valve cores are all arranged along the direction of the valve body axis, that is, the channel opened on the valve core is consistent with the channel opening direction of the valve body, resulting in that during the liquid reflux process, the reflux fluid will directly and completely act on the valve core, resulting in excessive pressure on the valve core, which increases the force of the valve core on the sealing ring, thereby making the deformation of the sealing ring too large, which in turn makes the sealing ring very easy to be damaged, resulting in a short service life of the sealing ring, affecting the use of the one-way valve. Utility Model Content

[0007] The purpose of the utility model is to provide a one-way valve to solve the above problems.

[0008] According to one aspect of the utility model, a one-way valve is provided, comprising:

[0009] A valve body having a flow channel formed therein;

[0010] A valve core having a moving part and an abutment part arranged at one end of the moving part, wherein a connecting hole is provided on the moving part, and the valve core is movably accommodated in the flow channel, and an angle α is formed between an axis of the connecting hole and an axis of the flow channel, and 15°<α≤45°, and one end of the axis of the connecting hole is inclined from the moving part, and the other end is inclined in a direction away from the axis of the flow channel, and an extension line of the axis of the connecting hole intersects with an inner wall of the flow channel;

[0011] The sealing ring is arranged in the flow channel, and the sealing ring is located at a side close to the abutting portion.

[0012] In at least one embodiment of the present application, in the axial direction of the connecting hole, the projected area of ​​the connecting hole does not cover the abutting portion.

[0013] In at least one embodiment of the present application, a mounting groove is provided on the movable portion, the mounting groove is connected to the connecting hole, there are multiple connecting holes, the multiple connecting holes are arranged at equal angles on one end of the movable portion close to the abutting portion, and the axes of the multiple connecting holes intersect on the axis of the mounting groove, and the other end of the axis of the connecting hole extends obliquely away from the axis of the mounting groove.

[0014] In at least one embodiment of the present application, the one-way valve further comprises:

[0015] A spring has one end abutting against the inner wall of the flow channel, and the other end extending into the mounting groove and abutting against the moving part. The spring is located at an end of the valve core away from the sealing ring.

[0016] In at least one embodiment of the present application, a communication space is formed between the abutting portion, the moving portion, and the flow channel, and the communication hole is in communication with the communication space.

[0017] In at least one embodiment of the present application, the valve body has a water inlet and a water outlet, and the water inlet is connected to the water outlet through the flow channel;

[0018] Wherein, the valve core abuts against the sealing ring to cover the water inlet to separate the water inlet from the flow channel.

[0019] In at least one embodiment of the present application, a positioning portion is formed by protruding from one end of the abutment portion close to the sealing ring, the diameter of the positioning portion is denoted as a, the maximum diameter of the abutment portion is denoted as b, the diameter of the water inlet is denoted as c, and the minimum diameter of the sealing ring is denoted as d, satisfying the relationship: a≤d≤c<b.

[0020] In at least one embodiment of the present application, the maximum diameter of the moving portion is denoted as e, and the diameter of the flow channel is denoted as f, satisfying the relationship: b<e=f.

[0021] In at least one embodiment of the present application, a positioning groove is formed on the valve body, the positioning groove is located in the flow channel, and the sealing ring is partially accommodated in the positioning groove.

[0022] In at least one embodiment of the present application, an abutment surface is provided on one side of the abutment portion close to the sealing ring;

[0023] When the one-way valve refluxes, the spring generates elastic force to push the valve core to move, so that the abutting surface abuts against the sealing ring to seal the connection between the flow channel and the water inlet.

[0024] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0025] The one-way valve in this embodiment has an angle α between the axis of the connecting hole and the axis of the flow channel, 15°<α≤45°, one end of the axis of the connecting hole is inclined from the moving part, and the other end is inclined away from the axis of the flow channel, and the extension line of the axis of the connecting hole intersects with the inner wall of the flow channel.

[0026] When the fluid flows back, the impact force generated when the fluid passes through the valve core is dispersed and will not act completely on the valve core, thus avoiding excessive wear of the valve core and the sealing ring, reducing the pressure and deformation of the sealing ring, reducing the probability of damage to the sealing ring, and extending the service life of the sealing ring.

[0027] The direct impact of the return fluid on the valve core is reduced, and the pressure on the sealing ring is reduced, thereby improving the sealing effect.

[0028] The problem of poor sealing effect, easy damage of the sealing ring and excessive force on the valve core in the prior art is solved. It not only improves the sealing performance and service life of the one-way valve, but also improves the fluid flow path and improves the overall fluid control efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is an exploded schematic diagram of a one-way valve according to an embodiment of the utility model;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure of the one-way valve in FIG.

[0032] Figure 3 for Figure 1 A cross-sectional view of a one-way valve in FIG.

[0033] Figure 4 for Figure 1 A cross-sectional view of the valve body in FIG.

[0034] Figure 5 for Figure 1 A schematic diagram of the structure of the valve core;

[0035] Figure 6 for Figure 5 Cross-sectional view of the valve core in FIG.

[0036] Among them: 100, one-way valve;

[0037] 110, valve body; 110a, flow channel; 110b, water inlet; 110c, water outlet; 110d, positioning groove;

[0038] 120, valve core; 121, moving part; 122, abutting part; 120a, communicating hole; 121a, mounting groove; 120b, communicating space; 123, positioning part; 122a, abutting surface;

[0039] 130, sealing ring;

[0040] 140. Spring. DETAILED DESCRIPTION

[0041] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0042] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0044] Please refer to Figure 1-Figure 6 According to one aspect of the present invention, a one-way valve 100 is provided, comprising:

[0045] The valve body 110 has a flow channel 110a formed therein;

[0046] The valve core 120 has a moving part 121 and an abutting part 122 arranged at one end of the moving part 121. The moving part 121 is provided with a connecting hole 120a. The valve core 120 is movably accommodated in the flow channel 110a. The angle between the axis of the connecting hole 120a and the axis of the flow channel 110a is α, 15°<α≤45°. One end of the axis of the connecting hole 120a is inclined from the moving part 121, and the other end is inclined away from the axis of the flow channel 110a, and the extended line of the axis of the connecting hole 120a intersects with the inner wall of the flow channel 110a.

[0047] The sealing ring 130 is disposed in the flow channel 110 a , and the sealing ring 130 is located at a side close to the abutting portion 122 .

[0048] In this embodiment, since the angle between the axis of the connecting hole 120a and the axis of the flow channel 110a is α, 15°<α≤45°, one end of the axis of the connecting hole 120a is inclined from the moving part 121, and the other end is inclined away from the axis of the flow channel 110a, and the extension line of the axis of the connecting hole 120a intersects with the inner wall of the flow channel 110a.

[0049] When the fluid refluxes, the impact force generated when the fluid passes through the valve core 120 is dispersed and will not act completely on the valve core 120, thereby avoiding excessive wear of the valve core 120 and the sealing ring 130, reducing the pressure and deformation of the sealing ring 130, reducing the probability of damage to the sealing ring 130, and extending the service life of the sealing ring 130.

[0050] The direct impact of the return fluid on the valve core 120 is reduced, and the pressure on the sealing ring 130 is reduced, thereby improving the sealing effect.

[0051] The problem of poor sealing effect, easy damage of the sealing ring 130, and excessive force on the valve core 120 in the prior art is solved. Not only the sealing performance and service life of the one-way valve 100 are improved, but also the fluid flow path is improved, and the overall fluid control efficiency is improved.

[0052] It should be noted that the valve body 110 is roughly in the shape of a hollow tube. The moving portion 121 of the valve core 120 is roughly in the shape of a circular shaft, with a mounting groove 121a provided on one side thereof, the mounting groove 121a being a circular groove, the communicating hole 120a being a through hole, and the communicating hole 120a being in the shape of a circle; the abutting portion 122 is roughly in the shape of a truncated cone, and the large end of the abutting portion 122 is located on the side close to the sealing ring 130, and the small end of the abutting portion 122 is located on the moving portion 121.

[0053] The communication hole 120 a is opened at a side of the moving portion 121 close to the abutting portion 122 .

[0054] In at least one embodiment of the present application, in the axial direction of the connecting hole 120 a , the projection area of ​​the connecting hole 120 a does not cover the abutting portion 122 .

[0055] Please refer to Figure 1-Figure 6 In the present embodiment, when the fluid pressure is insufficient or backflow occurs, the valve core 120 moves toward the water inlet 110b under the action of the spring 140.

[0056] The abutting portion 122 of the valve core 120 contacts the sealing ring 130 to form a seal, thereby preventing the fluid from entering the water inlet 110 b from the water outlet 110 c .

[0057] The projected area of ​​the communication hole 120 a does not overlap with the abutment portion 122 , ensuring that the communication hole 120 a does not affect the sealing performance of the abutment portion 122 during the movement of the valve core 120 , thereby extending the service life of the sealing ring 130 .

[0058] It is ensured that during the fluid reflux process, the force generated by the liquid refluxed through the connecting hole 120a will not directly act on the abutment portion 122, so as to reduce the direct force of the valve core 120 on the sealing ring 130, avoid damage to the sealing ring 130, and extend the service life of the sealing ring 130.

[0059] In at least one embodiment of the present application, an installation groove 121a is provided on the movable portion 121, and the installation groove 121a is connected to the connecting hole 120a. There are multiple connecting holes 120a, and the multiple connecting holes 120a are arranged at equal angles on one end of the movable portion 121 close to the abutting portion 122, and the axes of the multiple connecting holes 120a intersect with the axis of the installation groove 121a, and the other end of the axis of the connecting hole 120a extends obliquely away from the axis of the installation groove 121a.

[0060] Please refer to Figure 1-Figure 6 , in this embodiment, the normal flow is:

[0061] The fluid enters the valve body 110 from the water inlet 110 b and pushes the moving portion 121 of the valve core 120 to move away from the water inlet 110 b along the flow channel 110 a .

[0062] The fluid enters the plurality of communication holes 120a through the installation grooves 121a, and the communication holes 120a are evenly distributed and guide the fluid to flow toward the water outlet 110c.

[0063] When stopping or reversing:

[0064] When the fluid stops flowing or backflow occurs, the valve core 120 moves toward the water inlet 110 b under the action of the spring 140 .

[0065] The abutting portion 122 of the valve core 120 contacts the sealing ring 130 to form a seal, thereby preventing the fluid from flowing back from the water outlet 110c to the water inlet 110b.

[0066] The plurality of communication holes 120 a are arranged at equal angles to ensure uniform distribution of the fluid, reduce local pressure, reduce impact on the valve core 120 and the sealing ring 130 , and extend the life of the sealing ring 130 .

[0067] The other end of the axis of the connecting hole 120a extends obliquely away from the axis of the mounting groove 121a, and the other end of the axis of the connecting hole 120a extends away from the axis of the mounting groove 121a at a certain angle, which helps to disperse the fluid impact force, reduce local pressure, reduce the impact on the valve core 120 and the sealing ring 130, and extend the life of the sealing ring 130.

[0068] In at least one embodiment of the present application, the one-way valve 100 further includes:

[0069] The spring 140 has one end abutting against the inner wall of the flow channel 110 a and the other end extending into the mounting groove 121 a and abutting against the moving portion 121 . The spring 140 is located at one end of the valve core 120 away from the sealing ring 130 .

[0070] Please refer to Figure 1-Figure 6In this embodiment, when the fluid enters the valve body 110 from the water inlet 110b, the fluid pressure pushes the valve core 120 to move away from the water inlet 110b, connecting the water inlet 110b with the water outlet 110c, so that the fluid flows through the valve core 120 to the water outlet 110c.

[0071] During this process, the spring 140 is compressed and stores elastic force.

[0072] When the fluid stops flowing or backflow occurs, the fluid pressure decreases or the reverse force causes the valve core 120 to move toward the water inlet 110b.

[0073] At this time, the spring 140 releases its stored elastic force to push the valve core 120 to move toward the water inlet 110b, so that the abutting portion 122 of the valve core 120 contacts the sealing ring 130 to form a seal to prevent the fluid from flowing back.

[0074] The spring 140 provides a continuous reaction force to ensure that the valve core 120 can quickly move to the sealing position when the fluid pressure is insufficient or backflows, forming a reliable seal with the sealing ring 130 to prevent the fluid from flowing back.

[0075] In at least one embodiment of the present application, a communication space 120 b is formed between the abutting portion 122 , the moving portion 121 , and the flow channel 110 a , and the communication hole 120 a is in communication with the communication space 120 b .

[0076] In at least one embodiment of the present application, the valve body 110 has a water inlet 110b and a water outlet 110c, and the water inlet 110b is connected to the water outlet 110c through the flow channel 110a;

[0077] The valve core 120 abuts against the sealing ring 130 to cover the water inlet 110 b so as to separate the water inlet 110 b from the flow channel 110 a.

[0078] Please refer to Figure 1-Figure 6 In this embodiment, the fluid enters the valve body 110 from the water inlet 110b, and flows to the communicating hole 120a through the flow channel 110a and the communicating space 120b.

[0079] The fluid pressure pushes the valve core 120 to move, connecting the water inlet 110 b and the water outlet 110 c , so that the fluid flows through the valve core 120 to the outlet.

[0080] When the fluid stops flowing or backflow occurs, the elastic force of the spring 140 pushes the valve core 120 to move toward the water inlet 110b.

[0081] The abutting portion 122 of the valve core 120 contacts the sealing ring 130 to form a seal, thereby isolating the water inlet 110 b from the flow channel 110 a and preventing the fluid from flowing back.

[0082] It ensures that the fluid can only flow in one direction, prevents the fluid from flowing back, and improves the reliability of the system.

[0083] The valve core 120 and the sealing ring 130 are tightly matched, and when the valve core 120 is in the sealing position, the water inlet 110b can be effectively closed to prevent the fluid from flowing back, thereby improving the sealing effect.

[0084] The design of the connecting space 120 b enables the fluid to be evenly distributed around the valve core 120 , thereby reducing the impact force of the fluid on the valve core 120 , reducing the force of the valve core 120 on the sealing ring 130 , and extending the service life of the sealing ring 130 .

[0085] In at least one embodiment of the present application, a positioning portion 123 is protruded from one end of the abutment portion 122 close to the sealing ring 130, the diameter of the positioning portion 123 is denoted as a, the maximum diameter of the abutment portion 122 is denoted as b, the diameter of the water inlet 110b is denoted as c, and the minimum diameter of the sealing ring 130 is denoted as d, satisfying the relationship: a≤d≤c<b.

[0086] In at least one embodiment of the present application, the maximum diameter of the moving portion 121 is denoted as e, and the diameter of the flow channel 110a is denoted as f, satisfying the relationship: b<e=f.

[0087] Please refer to Figure 1-Figure 6 In this embodiment, the positioning portion 123 is a portion protruding from the end of the abutting portion 122, and its function is to help position and fix the contact position between the valve core 120 and the sealing ring 130, ensuring that the valve core 120 can accurately contact the sealing ring 130 during movement.

[0088] a≤d≤c<b ensures the matching and sealing effect of the valve core 120, the sealing ring 130 and the water inlet 110b.

[0089] b<e=f ensures that the valve core 120 can move smoothly in the flow channel 110a and will not be hindered during the movement.

[0090] The design of the positioning portion 123 ensures that the valve core 120 can accurately contact the sealing ring 130 during the movement, thereby forming a reliable seal and preventing the fluid from flowing back.

[0091] In at least one embodiment of the present application, a positioning groove 110d is formed on the valve body 110 , the positioning groove 110d is located in the flow channel 110a , and the sealing ring 130 is partially received in the positioning groove 110d .

[0092] Please refer to Figure 1-Figure 6 In this embodiment, a portion of the sealing ring 130 is embedded in the positioning groove 110d, which helps to ensure that the sealing ring 130 is fixed in the flow channel 110a and prevent the sealing ring 130 from moving or deforming under the action of fluid pressure.

[0093] When the fluid stops flowing or backflow occurs, the force of the spring 140 pushes the valve core 120 to move toward the water inlet 110 b.

[0094] The abutting portion 122 of the valve core 120 contacts the sealing ring 130 to form a seal.

[0095] The sealing ring 130 is partially embedded in the positioning groove 110d to ensure the stability and reliability of the sealing position.

[0096] The sealing ring 130 is partially embedded in the positioning groove 110d, which ensures the close contact between the valve core 120 and the sealing ring 130, helps to improve the sealing performance and prevent fluid leakage or backflow.

[0097] The positioning groove 110 d fixes the position of the sealing ring 130 , reduces the wear caused by the movement or deformation of the sealing ring 130 , and thus prolongs the service life of the sealing ring 130 .

[0098] In at least one embodiment of the present application, a side of the abutment portion 122 close to the sealing ring 130 is provided with an abutment surface 122a;

[0099] When the one-way valve 100 flows backward, the spring 140 generates elastic force to push the valve core 120 to move, so that the abutting surface 122a abuts against the sealing ring 130 to seal the connection between the flow channel 110a and the water inlet 110b.

[0100] Please refer to Figure 1-Figure 6 In this embodiment, when the valve core 120 moves under the action of the spring 140, the abutting surface 122a contacts the sealing ring 130, thereby closing the connection between the flow channel 110a and the water inlet 110b to prevent the fluid from flowing back.

[0101] The close contact between the abutting surface 122 a and the sealing ring 130 ensures effective sealing, prevents fluid backflow, and improves the sealing performance of the one-way valve 100 .

[0102] Secondly, the abutting surface 122 a abuts against the sealing ring 130 to increase the contact area with the sealing ring 130 , thereby improving the sealing performance.

[0103] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A one-way valve, characterized in that: include: A valve body having a flow channel formed therein; A valve core having a moving part and an abutment part arranged at one end of the moving part, wherein a connecting hole is provided on the moving part, and the valve core is movably accommodated in the flow channel, and an angle α is formed between an axis of the connecting hole and an axis of the flow channel, and 15°<α≤45°, and one end of the axis of the connecting hole is inclined from the moving part, and the other end is inclined in a direction away from the axis of the flow channel, and an extension line of the axis of the connecting hole intersects with an inner wall of the flow channel; The sealing ring is arranged in the flow channel, and the sealing ring is located at a side close to the abutting portion.

2. The one-way valve according to claim 1, characterized in that: In the axial direction of the communicating hole, the projection area of ​​the communicating hole does not cover the abutting portion.

3. The one-way valve according to claim 2, characterized in that: The movable part is provided with a mounting groove, the mounting groove is connected with the connecting hole, there are multiple connecting holes, the multiple connecting holes are arranged at equal angles on one end of the movable part close to the abutting part, and the axes of the multiple connecting holes intersect with the axis of the mounting groove, and the other end of the axis of the connecting hole extends obliquely away from the axis of the mounting groove.

4. The one-way valve according to claim 3, characterized in that: The one-way valve also includes: A spring has one end abutting against the inner wall of the flow channel, and the other end extending into the mounting groove and abutting against the moving part. The spring is located at an end of the valve core away from the sealing ring.

5. The one-way valve according to claim 1, characterized in that: A communication space is formed among the abutting portion, the moving portion, and the flow channel, and the communication hole is in communication with the communication space.

6. The one-way valve according to claim 5, characterized in that: The valve body has a water inlet and a water outlet, and the water inlet is connected with the water outlet through the flow channel; Wherein, the valve core abuts against the sealing ring to cover the water inlet to separate the water inlet from the flow channel.

7. The one-way valve according to claim 6, characterized in that: A positioning portion is formed on one end of the abutment portion protruding from the sealing ring. The diameter of the positioning portion is denoted as a, the maximum diameter of the abutment portion is denoted as b, the diameter of the water inlet is denoted as c, and the minimum diameter of the sealing ring is denoted as d, satisfying the relationship: a≤d≤c<b.

8. The one-way valve according to claim 7, characterized in that: The maximum diameter of the moving part is denoted as e, and the diameter of the flow channel is denoted as f, satisfying the relationship: b<e=f.

9. The one-way valve according to claim 1, characterized in that: The valve body is provided with a positioning groove, the positioning groove is located in the flow channel, and the sealing ring is partially accommodated in the positioning groove.

10. The one-way valve according to claim 4, characterized in that: A side of the abutment portion close to the sealing ring is provided with an abutment surface; When the one-way valve refluxes, the spring generates elastic force to push the valve core to move, so that the abutting surface abuts against the sealing ring to seal the connection between the flow channel and the water inlet.

Images