One-way filter valve

Abstract

The one-way filter valve comprises a shell, a sintered filter element is arranged in the shell, and a one-way inlet and a one-way outlet are formed in the shell; a fastening module used for fixing the sintered filter element is further arranged in the one-way outlet, a valve element is further arranged in the shell, and one end of the valve element is coaxially connected with the sintered filter element in a sleeved mode in the axis direction of the shell. An elastic plugging disc is further arranged in the shell, one end of the elastic plugging disc is connected with the valve element, the other end of the elastic plugging disc extends in the radial direction of the valve element, the face, right opposite to the one-way inlet, of the elastic plugging disc is attached to the shell, and the other face of the elastic plugging disc is in a free state so as to plug the one-way inlet in a one-way mode. Compared with the prior art, the functions can be achieved through the elastic plugging disc and the valve element, complex assemblies such as a spring are removed, and on the premise that basic functions are guaranteed, the structure of equipment is simplified as much as possible.

Description

Technical Field

[0001] This application relates to the field of fluid control equipment technology, specifically to a one-way filter valve. Background Technology

[0002] A one-way filter valve, also known as a non-return valve, is an accessory mainly used in pneumatic and hydraulic systems. Its function is to prevent the backflow of gas or liquid in pipelines.

[0003] In existing technologies, one-way filter valves generally achieve one-way conduction through components such as floats and springs. After prolonged use, the performance parameters of the springs are easily degraded. In addition, the above-mentioned structural design introduces more auxiliary components, thereby complicating the structure of the entire device. Utility Model Content

[0004] The main objective of this application is to provide a one-way filter valve that addresses the structural complexity of existing technologies.

[0005] This application achieves the above objectives through the following technical solutions:

[0006] A one-way filter valve, comprising a housing;

[0007] A sintered filter element is disposed within the housing; the housing is provided with a one-way inlet and a one-way outlet; a fastening module for fixing the sintered filter element is also provided within the one-way outlet;

[0008] A valve core is disposed inside the housing, and one end of the valve core is coaxially connected to the sintered filter element along the axial direction of the housing.

[0009] An elastic sealing disc is provided, with one end connected to the valve core and the other end extending radially along the valve core. The side of the elastic sealing disc facing the one-way inlet is fitted to the housing, while the other side is in a free state, so as to unidirectionally seal the one-way inlet.

[0010] Optionally, the housing is further provided with a receiving cavity. Along the axis of the housing, one end of the receiving cavity is coaxially connected to the one-way outlet, and the other end is coaxially connected to the one-way inlet. The receiving cavity is provided with a limiting step adapted to the sintered filter element.

[0011] Optionally, the elastic sealing disc is configured in a conical shape, with the small end of the elastic sealing disc being integrally connected to the valve core; the large end of the elastic sealing disc is used to block the one-way inlet, and the large end of the elastic sealing disc is also provided with an adjustment cavity.

[0012] Optionally, the wall thickness of the resilient sealing disc decreases from its small end to its large end along its axis.

[0013] Optionally, a shaping arc is provided at the edge of the large end of the elastic sealing disc around its axis.

[0014] Optionally, the valve core is further provided with a retaining ring, and one end of the sintered filter element abuts against the retaining ring along the axial direction of the valve core.

[0015] Optionally, around the axis of the valve core, the end of the retaining ring facing away from the elastic sealing disc is also provided with a guide surface with a conical structure.

[0016] Optionally, the fastening module includes a retaining ring disposed within the housing, and a limiting ring is also disposed within the one-way outlet of the housing. Along the axial direction of the housing, one end of the retaining ring abuts against the sintered filter element, and the other end abuts against the limiting ring.

[0017] Optionally, the fastening module includes a thrust ring disposed within the housing, with one end of the thrust ring abutting against the sintered filter element along the axial direction of the housing, and the other end abutting against the inner wall of the housing.

[0018] Optionally, the fastening module includes a limiting block, which is threadedly installed inside the one-way outlet; one end of the limiting block abuts against the sintered filter element along the axial direction of the housing.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] This application includes a housing, within which a sintered filter element is disposed. The housing has a one-way inlet and a one-way outlet. A fastening module for securing the sintered filter element is also disposed within the one-way outlet. A valve core is also disposed within the housing, with one end coaxially connected to the sintered filter element along the axial direction of the housing. An elastic sealing disc is also disposed within the housing, with one end connected to the valve core and the other end extending radially along the valve core. The side of the elastic sealing disc facing the one-way inlet is fitted against the housing, while the other side is in a free state, thus one-way sealing the one-way inlet.

[0021] In use, the fluid to be filtered enters from the one-way inlet. Since the elastic sealing disc only fits against the housing at one end facing the one-way inlet, the elastic sealing disc is in an unrestrained state without support along the direction of fluid entry. The impact force of the fluid will cause the elastic sealing disc to undergo elastic deformation, thereby opening the channel, allowing the fluid to enter the housing, and after being filtered by the sintered filter element, it will be discharged from the one-way outlet.

[0022] When the flow direction of the fluid is reversed, one side of the elastic sealing disc is subjected to the impact force of the fluid, while the other side is supported by the shell. The two forces are opposite in direction and equal in magnitude. Therefore, the elastic sealing disc will close the one-way inlet, thereby realizing the one-way flow function of the fluid.

[0023] Secondly, compared with the prior art, this application can achieve the above functions with an elastic sealing disc and valve core, eliminating complex components such as springs, and simplifying the structure of the equipment as much as possible while ensuring basic functions;

[0024] Meanwhile, since the present application also provides a sintered filter element inside the housing, it can filter the fluid while realizing unidirectional flow. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of a one-way filter valve provided in Embodiment 1 of this application;

[0026] Figure 2 An exploded view of a one-way filter valve provided in Embodiment 1 of this application;

[0027] Figure 3 A cross-sectional view of a one-way filter valve provided in Embodiment 1 of this application;

[0028] Figure 4 A cross-sectional view of another alternative technical solution for a one-way filter valve;

[0029] Figure 5 A cross-sectional view of another alternative technical solution for a one-way filter valve;

[0030] Reference numerals: 1-Shell, 2-Sintered filter element, 3-One-way inlet, 4-One-way outlet, 5-Valve core, 6-Elastic sealing disc, 7-Receiving cavity, 8-Limiting step, 9-Adjusting cavity, 10-Shaping arc, 11-Snap ring, 12-Guide surface, 13-Snap spring, 14-Limiting ring, 15-Thrust stop ring, 16-Limiting block.

[0031] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] Implementation Method 1

[0037] Reference Figures 1 to 3 This embodiment is an optional embodiment of this application, which discloses a one-way filter valve, including a housing 1. The housing 1 is generally cylindrical. A receiving cavity 7 is also provided inside the housing 1. Along the axis of the housing 1, one end of the receiving cavity 7 is coaxially connected to the one-way outlet 4, and the other end is coaxially connected to the one-way inlet 3.

[0038] The one-way filter valve also includes a sintered filter element 2 and a valve core 5. The sintered filter element 2 is cylindrical in shape and has a connecting cavity in its middle. The valve core 5 is also cylindrical in shape and is inserted into the connecting cavity; thereby realizing the connection between the sintered filter element 2 and the valve core 5.

[0039] A retaining ring 11 is integrally connected to the valve core 5. Along the axial direction of the housing 1, one end of the one-way inlet 3 is on the right side and one end of the one-way outlet 4 is on the left side. The right end face of the retaining ring 11 abuts against the sintered filter element 2.

[0040] The sintered filter element 2 is inserted into the receiving cavity 7. At the same time, a limiting step 8 is provided in the receiving cavity 7 along the axial direction of the receiving cavity 7. The limiting step 8 abuts against the right end face of the sintered filter element 2. That is, the retaining ring 11 and the limiting step 8 abut against the end faces of the left and right sides of the sintered filter element 2 respectively, thereby limiting the sintered filter element 2.

[0041] Meanwhile, the left end face of the retaining ring 11 is also provided with a guide surface 12, which is a conical structure.

[0042] The housing 1 is also provided with an elastic sealing disc 6. The elastic sealing disc 6 is generally in the shape of a ring. Along the axial direction of the elastic sealing disc 6, one end of the elastic sealing disc 6 is integrally connected to the valve core 5 and this end is in a free state; the other end of the elastic sealing disc 6 is directly opposite to the one-way inlet 3 and fits against the end face of the one-way inlet 3 to block the one-way inlet 3 in one direction.

[0043] The above configuration ensures that the elastic sealing disc 6 receives resistance at only one end. That is, when the fluid enters from the one-way inlet 3, it can push the elastic sealing disc 6 to open the one-way inlet 3. When the fluid flows in the opposite direction, the end face of the housing 1 provides support for the elastic sealing disc 6, thereby ensuring that it fits tightly with the housing 1.

[0044] Furthermore, the elastic sealing disc 6 has an overall conical structure, with its small end integrally connected to the valve core 5, and its large end facing the one-way inlet 3 and closely abutting against the end face of the one-way inlet 3, thereby sealing the one-way inlet 3 through the elastic sealing disc 6.

[0045] The side of the elastic sealing disc 6 that faces the one-way inlet 3 is also provided with an adjustment cavity 9, that is, the elastic sealing disc 6 is a hollow structure.

[0046] The hollow structure design can effectively reduce the wall thickness of the large end of the elastic sealing disc 6, thereby reducing the opening pressure of the elastic sealing disc 6 and ensuring that the one-way inlet 3 can be opened in time.

[0047] Furthermore, along the axis of the elastic sealing disc 6, extending from its small end to its large end, the wall thickness of the elastic sealing disc 6 decreases progressively, as detailed in the following reference. Figure 3 That is, the adjustment cavity 9 is also a conical structure, and the apex angle of the adjustment cavity 9 is larger than the apex angle of the elastic sealing disk 6;

[0048] Around the axis of the elastic sealing disc 6, the edge of the large end of the elastic sealing disc 6 is also provided with a shaping arc 10, that is, the radial cross section of the edge of the elastic sealing disc 6 is set with an arc-shaped structure.

[0049] By adjusting the shape of the regulating cavity 9, the wall thickness of the elastic sealing disc 6 can be further controlled, especially the edge area of ​​the large end of the elastic sealing disc 6 can be thickened, thereby increasing the opening pressure of the elastic sealing disc 6 and ensuring that the one-way inlet 3 can be opened in time.

[0050] The shaping arc 10 can effectively improve the structural strength of the edge area of ​​the elastic sealing disc 6, preventing damage and deformation due to insufficient thickness. It can also improve the service life of the elastic sealing disc 6 and enhance its sealing performance.

[0051] Furthermore, a fastening module is provided on one side of the one-way outlet 4. The fastening module includes a retaining ring 13 and a limiting ring 14. The limiting ring 14 is disposed in the one-way outlet 4 and is integrally connected to the housing 1. The retaining ring 13 is disposed in the receiving cavity 7. Along the axial direction of the housing 1, one end of the retaining ring 13 abuts against the sintered filter element 2, and the other end abuts against the limiting ring 14. Thus, the sintered filter element 2 is fixed in the housing 1 by the cooperation of the retaining ring 13 and the limiting ring 14.

[0052] Reference Figure 4 As another optional embodiment of this application, this application discloses another possible embodiment of a one-way filter valve, wherein a fastening module is provided on one side of the one-way outlet 4, the fastening module including a thrust retainer 15, one end of the thrust retainer 15 abutting against the sintered filter element 2 along the axial direction of the housing 1, and the other end abutting against the inner wall of the housing 1.

[0053] Reference Figure 5 As another optional embodiment of this application, this application discloses another possible embodiment of a one-way filter valve, wherein a fastening module is provided on one side of the one-way outlet 4, the fastening module including a limiting block 16, the limiting block 16 being threadedly installed in the one-way outlet 4; along the axial direction of the housing 1, one end of the limiting block 16 abuts against the sintered filter element 2.

[0054] When the one-way valve described in this application is used, the fluid to be filtered enters from the one-way inlet. Since the elastic sealing disc is only in contact with the housing at one end facing the one-way inlet, the elastic sealing disc is in an unrestrained state without support along the direction of fluid entry. The impact force of the fluid will cause the elastic sealing disc to undergo elastic deformation, thereby opening the channel, allowing the fluid to enter the housing, and after being filtered by the sintered filter element, it will be discharged from the one-way outlet.

[0055] When the flow direction of the fluid is reversed, one side of the elastic sealing disc is subjected to the impact force of the fluid, while the other side is supported by the shell. The two forces are opposite in direction and equal in magnitude. Therefore, the elastic sealing disc will close the one-way inlet, thereby realizing the one-way flow function of the fluid.

[0056] Secondly, compared with the prior art, this application can achieve the above functions with an elastic sealing disc and valve core, eliminating complex components such as springs, and simplifying the structure of the equipment as much as possible while ensuring basic functions;

[0057] Meanwhile, since the present application also provides a sintered filter element inside the housing, it can filter the fluid while realizing unidirectional flow.

[0058] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A one-way filter valve, characterized in that, Includes the housing (1); A sintered filter element (2) is disposed inside the housing (1); the housing (1) is provided with a one-way inlet (3) and a one-way outlet (4); a fastening module for fixing the sintered filter element (2) is also provided inside the one-way outlet (4); Valve core (5), the valve core (5) is disposed inside the housing (1), and one end of the valve core (5) is coaxially connected to the sintered filter element (2) along the axial direction of the housing (1); The elastic sealing disc (6) is connected at one end to the valve core (5) and extends at the other end along the radial direction of the valve core (5). The side of the elastic sealing disc (6) facing the one-way inlet (3) is in contact with the housing (1), and the other side is in a free state to block the one-way inlet (3) in one direction.

2. The one-way filter valve according to claim 1, characterized in that, The housing (1) is also provided with a receiving cavity (7). Along the axis of the housing (1), one end of the receiving cavity (7) is coaxially connected to the one-way outlet (4), and the other end is coaxially connected to the one-way inlet (3). The receiving cavity (7) is provided with a limiting step (8) adapted to the sintered filter element (2).

3. A one-way filter valve according to claim 1, characterized in that, The elastic sealing disc (6) is generally arranged in a conical structure. The small end of the elastic sealing disc (6) is integrally connected to the valve core (5). The large end of the elastic sealing disc (6) is used to block the one-way inlet (3), and the large end of the elastic sealing disc (6) is also provided with an adjustment cavity (9).

4. A one-way filter valve according to claim 3, characterized in that, Along the axis of the elastic sealing disc (6), extending from its small end to its large end, the wall thickness of the elastic sealing disc (6) decreases.

5. A one-way filter valve according to claim 4, characterized in that, Around the axis of the elastic sealing disc (6), the edge of the large end of the elastic sealing disc (6) is also provided with a shaping arc (10).

6. A one-way filter valve according to claim 1, characterized in that, The valve core (5) is also provided with a retaining ring (11), and one end of the sintered filter element (2) abuts against the retaining ring (11) along the axial direction of the valve core (5).

7. A one-way filter valve according to claim 6, characterized in that, Around the axis of the valve core (5), the end of the retaining ring (11) facing away from the elastic sealing disc (6) is also provided with a guide surface (12) with a conical structure.

8. A one-way filter valve according to any one of claims 1-7, characterized in that, The fastening module includes a retaining ring (13) disposed in the housing (1). A limiting ring (14) is also disposed in the one-way outlet (4) of the housing (1). Along the axial direction of the housing (1), one end of the retaining ring (13) abuts against the sintered filter element (2), and the other end abuts against the limiting ring (14).

9. A one-way filter valve according to any one of claims 1-7, characterized in that, The fastening module includes a thrust retainer ring (15) disposed in the housing (1). Along the axial direction of the housing (1), one end of the thrust retainer ring (15) abuts against the sintered filter element (2), and the other end abuts against the inner wall of the housing (1).

10. A one-way filter valve according to any one of claims 1-7, characterized in that, The fastening module includes a limiting block (16), which is threadedly installed inside the one-way outlet (4); along the axial direction of the housing (1), one end of the limiting block (16) abuts against the sintered filter element (2).

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