A one-way valve

Abstract

This utility model discloses a one-way valve, relating to the field of one-way valve technology, comprising: a valve body and a valve assembly; the valve body has an inner cavity, and the valve assembly is disposed within the inner cavity; the valve body has an inlet channel at one end of the inner cavity and an outlet channel, both of which communicate with the inner cavity; the valve assembly includes a valve, a limiting plate, a sleeve, and a torsion spring; in use, the limiting plate is rotated towards the outlet of the inlet channel by the torsion force of the torsion spring, causing the valve to fit against the outlet of the inlet channel; when the pressure of the liquid in the inlet channel is sufficiently high, the valve is pushed open, overcoming the torsion force of the torsion spring, and the liquid flows out of the valve body through the outlet channel; because the torsion spring applies force to the limiting plate from the side, causing the valve to close the outlet of the inlet channel, there will be no interference when the outlet channel needs to be placed directly below the valve, facilitating the placement of the outlet channel.

Description

Technical Field

[0001] This utility model relates to the field of one-way valve technology, specifically a one-way valve. Background Technology

[0002] A check valve is a valve that allows fluid to flow only through the inlet, preventing backflow of the medium through the outlet; it is also called a non-return valve or check valve. It is used in hydraulic systems to prevent reverse oil flow, or in pneumatic systems to prevent reverse compressed air flow. Check valves come in two types: straight-through and right-angle. Straight-through check valves are installed on pipelines using a threaded connection. Right-angle check valves are available in three connection types: threaded, plate-mounted, and flanged.

[0003] For example, Chinese patent application number "202020209249.4" discloses a flow-limiting one-way valve, including a housing assembly. The housing assembly includes a fluid inlet, a valve chamber, and a fluid outlet. The valve chamber has a through-cavity structure that connects the fluid inlet and the fluid outlet. The valve chamber has a flow-limiting structure near the fluid inlet. The valve chamber has a one-way valve core that moves along the fluid movement direction. The valve chamber also has a force-applying structure that applies force to the one-way valve core in the direction of the flow-limiting structure and the fluid inlet. The spring is set at the bottom of the valve core head and is limited and guided by the core rod at the bottom of the valve core head (the spring is sleeved on the core rod). During installation, a positioning guide structure needs to be set at the bottom of the valve core to install the core rod of the valve core. If the outlet of the one-way valve is set at the bottom of the one-way valve, the installation of the valve core will interfere with the setting of the outlet, thus limiting the setting position of the outlet.

[0004] In view of this, there is an urgent need for a one-way valve to solve the above problems. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model solves the problem using the following technical structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A one-way valve includes: a valve housing and a valve assembly, wherein the valve housing has an inner cavity and the valve assembly is disposed within the inner cavity;

[0008] The valve housing has an inlet channel at one end of the inner cavity and an outlet channel on the valve housing, both of which communicate with the inner cavity.

[0009] The valve assembly includes a valve, a limiting plate, a sleeve, and a torsion spring. The sleeve is arranged circumferentially at the outlet of the liquid inlet channel. One side of the limiting plate is rotatably mounted on the sleeve. The valve is arranged on the side of the limiting plate near the outlet of the liquid inlet channel. The torsion spring is sleeved on the sleeve, with one end of the torsion spring disposed on the limiting plate and the other end disposed on the sleeve or valve body.

[0010] A mounting screw is provided on the side of the valve away from the outlet of the liquid inlet channel. The mounting screw passes through the limiting plate and a nut is threaded onto the mounting screw.

[0011] The valve has a groove on the side near the outlet of the liquid inlet channel, and the groove completely covers the outlet of the liquid inlet channel.

[0012] The valve has a first sealing groove arranged circumferentially in the groove. The first sealing groove is annular and a first sealing ring is provided inside the first sealing groove.

[0013] The valve is made of elastic rubber.

[0014] Two mounting blocks are provided inside the cavity, and the two ends of the sleeve rod are respectively mounted on the two mounting blocks.

[0015] The axis of the liquid outlet channel inlet coincides with the axis of the liquid inlet channel outlet.

[0016] The valve housing includes a lower housing and a cover. The cover is disposed at the opening of the lower housing. The valve assembly and the liquid inlet channel are both disposed on the cover, and the liquid outlet channel is disposed on the lower housing.

[0017] The cover is provided with a second sealing groove in the circumference, and a second sealing ring is provided in the second sealing groove.

[0018] Both the cover and the lower shell are provided with ring plates in the circumferential direction, and the ring plate is composed of six identical planes connected end to end in sequence.

[0019] The above-described structure of this utility model can achieve the following beneficial effects:

[0020] During use, the limiting plate, under the torsion of the torsion spring, rotates towards the outlet of the inlet channel, causing the valve to fit against the outlet of the inlet channel, thus separating the inlet channel from the inner cavity. When liquid enters from the inlet channel, and the pressure of the liquid in the inlet channel is high enough, it pushes open the valve, allowing it to overcome the torsion of the torsion spring and connect the inlet channel with the inner cavity. The liquid then flows out of the valve body through the outlet channel. Because the torsion spring applies force to the limiting plate from the side, causing the valve to close the outlet of the inlet channel, there will be no interference when the outlet channel needs to be placed directly below the valve, facilitating the placement of the outlet channel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0022] Figure 2 This is a schematic cross-sectional view of the structure in this embodiment;

[0023] Figure 3 This is a schematic diagram of the structure of the cover and valve assembly in this embodiment;

[0024] Figure 4 This is a schematic diagram of the valve assembly in this embodiment.

[0025] In the diagram: 1. Inner cavity; 2. Liquid inlet channel; 3. Liquid outlet channel; 4. Valve; 5. Limiting plate; 6. Sleeve rod; 7. Torsion spring; 8. Mounting screw; 9. Nut; 10. Groove; 11. First sealing groove; 12. First sealing ring; 13. Mounting block; 14. Lower housing; 15. Cover; 16. Second sealing groove; 17. Second sealing ring; 18. Ring plate. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0028] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0029] like Figures 1-3 As shown, a one-way valve includes: a valve body and a valve assembly, wherein an inner cavity 1 is provided inside the valve body, and the valve assembly is disposed inside the inner cavity 1;

[0030] The valve housing has an inlet channel 2 at one end of the inner cavity 1 and an outlet channel 3 on the valve housing. Both the inlet channel 2 and the outlet channel 3 are connected to the inner cavity 1.

[0031] The valve assembly includes a valve 4, a limiting plate 5, a sleeve 6, and a torsion spring 7. The sleeve 6 is arranged circumferentially at the outlet of the liquid inlet channel 2. One side of the limiting plate 5 is rotatably mounted on the sleeve 6. The valve 4 is arranged on the side of the limiting plate 5 near the outlet of the liquid inlet channel 2. The torsion spring 7 is sleeved on the sleeve 6. One end of the torsion spring 7 is arranged on the limiting plate 5, and the other end is arranged on the sleeve 6 or the valve body.

[0032] Based on the above structure, during use, the limiting plate 5 is rotated towards the outlet side of the liquid inlet channel 2 by the torsion force of the torsion spring 7, so that the valve 4 is attached to the outlet of the liquid inlet channel 2, thus separating the liquid inlet channel 2 from the inner cavity 1. When liquid enters from the liquid inlet channel 2, when the pressure of the liquid in the liquid inlet channel 2 is large enough, the valve 4 is pushed open, so that the valve 4 overcomes the torsion force of the torsion spring 7, and the liquid inlet channel 2 is connected to the inner cavity 1, and the liquid flows out of the valve body through the liquid outlet channel 3. Since the torsion spring 7 applies force to the limiting plate 5 from the side, the valve 4 closes the outlet of the liquid inlet channel 2. When the liquid outlet channel 3 needs to be set directly below the valve 4, there will be no interference, which facilitates the setting of the liquid outlet channel 3.

[0033] like Figure 2 and Figure 3 As shown, a mounting screw 8 is provided on the side of valve 4 away from the outlet of the liquid inlet channel 2. The mounting screw 8 passes through the limiting plate 5, and a nut 9 is threaded onto the mounting screw 8. The mounting screw 8 is fixed to the limiting plate 5 by the nut 8, thereby fixing valve 4 to the limiting plate 5.

[0034] like Figure 3 and Figure 4 As shown, a groove 10 is provided on the side of valve 4 near the outlet of liquid inlet channel 2. The groove 10 completely covers the outlet of liquid inlet channel 2, thus sealing the liquid inlet channel 2. A first sealing groove 11 is provided circumferentially around the groove 10 of valve 4. The first sealing groove 11 is annular and a first sealing ring 12 is provided inside the first sealing groove 11. Thus, the sealing performance of valve 4 is improved by the provision of the first sealing ring 12. Valve 4 is preferably made of an elastic material, such as elastic rubber, so that valve 4 can fully contact the circumferential outlet of liquid inlet channel 2 to ensure sealing.

[0035] Further optimizations include, for example Figure 3 As shown, two mounting blocks 13 are provided inside the inner cavity 1. The two ends of the sleeve rod 6 are respectively set on the two mounting blocks 13. The position of the sleeve rod 6 is fixed by the two mounting blocks 13.

[0036] Further optimizations include, for example Figure 2 As shown, in this embodiment, the axis of the inlet of the liquid outlet channel 3 coincides with the axis of the outlet of the liquid inlet channel 2. That is to say, the inlet of the liquid outlet channel 3, the outlet of the liquid inlet channel 2, and the valve 4 are on a straight line.

[0037] like Figure 1 and Figure 2 As shown, the valve housing includes a lower housing 14 and a cover 15. The cover 15 is located at the opening of the lower housing 14. The valve assembly and the liquid inlet channel 2 are both located on the cover 15, and the liquid outlet channel 3 is located on the lower housing 14. The lower housing 14 and the cover 15 together form the valve housing, which facilitates the assembly and disassembly of the valve housing. Furthermore, the cover 15 is provided with a second sealing groove 16 in the circumferential direction, and a second sealing ring 17 is provided in the second sealing groove 16. The second sealing ring 17 improves the sealing performance between the lower housing 14 and the cover 15.

[0038] like Figure 1 As shown, in order to facilitate the screwing of the cover 15 and the lower shell 14, both the cover 15 and the lower shell 14 are provided with ring plates 18 in the circumferential direction. The ring surface of the ring plate 18 is composed of six identical planes connected end to end in sequence. In this way, the cover 15 and the lower shell 14 are in the shape of a regular hexahedron in the circumferential direction, which facilitates the screwing of the appliance.

[0039] In summary, during use, the limiting plate 5 is rotated towards the outlet of the liquid inlet channel 2 by the torsion force of the torsion spring 7, causing the valve 4 to fit against the outlet of the liquid inlet channel 2, thus separating the liquid inlet channel 2 from the inner cavity 1. When liquid enters from the liquid inlet channel 2, and the pressure of the liquid in the liquid inlet channel 2 is high enough, the valve 4 is pushed open, allowing the valve 4 to overcome the torsion force of the torsion spring 7, thus connecting the liquid inlet channel 2 with the inner cavity 1, and the liquid flows out of the valve body through the liquid outlet channel 3. Because the torsion spring 7 applies force to the limiting plate 5 from the side, causing the valve 4 to close the outlet of the liquid inlet channel 2, there will be no interference when the liquid outlet channel 3 needs to be set directly below the valve 4, which facilitates the setting of the liquid outlet channel 3.

[0040] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A one-way valve characterized by, include: A valve housing and a valve assembly, wherein the valve housing has an inner cavity (1) and the valve assembly is disposed within the inner cavity (1); The valve housing has an inlet channel (2) at one end of the inner cavity (1) and an outlet channel (3) on the valve housing. Both the inlet channel (2) and the outlet channel (3) are connected to the inner cavity (1). The valve assembly includes a valve (4), a limiting plate (5), a sleeve (6), and a torsion spring (7). The sleeve (6) is arranged circumferentially at the outlet of the liquid inlet channel (2). One side of the limiting plate (5) is rotatably arranged on the sleeve (6). The valve (4) is arranged on the side of the limiting plate (5) near the outlet of the liquid inlet channel (2). The torsion spring (7) is sleeved on the sleeve (6). One end of the torsion spring (7) is arranged on the limiting plate (5), and the other end is arranged on the sleeve (6) or the valve body.

2. The one-way valve of claim 1, wherein: The valve (4) is provided with an installation screw (8) on the side away from the outlet of the liquid inlet channel (2). The installation screw (8) passes through the limiting plate (5) and a nut (9) is threaded onto the installation screw (8).

3. The one-way valve of claim 1, wherein: The valve (4) has a groove (10) on the side near the outlet of the liquid inlet channel (2), and the groove (10) completely covers the outlet of the liquid inlet channel (2).

4. The one-way valve of claim 3, wherein: The valve (4) has a first sealing groove (11) circumferentially arranged in the groove (10). The first sealing groove (11) is annular and a first sealing ring (12) is arranged inside the first sealing groove (11).

5. The one-way valve of claim 4, wherein: The valve (4) is made of elastic rubber.

6. The one-way valve of claim 1, wherein: Two mounting blocks (13) are provided inside the inner cavity (1), and the two ends of the sleeve rod (6) are respectively mounted on the two mounting blocks (13).

7. The one-way valve of claim 1, wherein: The axis of the inlet of the liquid outlet channel (3) coincides with the axis of the outlet of the liquid inlet channel (2).

8. The one-way valve of claim 1, wherein: The valve housing includes a lower housing (14) and a cover (15). The cover (15) is disposed at the opening of the lower housing (14). The valve assembly and the liquid inlet channel (2) are both disposed on the cover (15). The liquid outlet channel (3) is disposed on the lower housing (14).

9. The one-way valve of claim 8, wherein: The cover (15) is provided with a second sealing groove (16) in the circumferential direction, and a second sealing ring (17) is provided in the second sealing groove (16).

10. The one-way valve of claim 8, wherein: Both the cover (15) and the lower shell (14) are provided with ring plates (18) in the circumferential direction. The ring surface of the ring plate (18) is composed of six identical planes connected end to end in sequence.

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