A detachable one-way valve structure and a liquid path reversing integrated block

Abstract

The utility model discloses a detachable check valve structure and liquid path reversing integrated block, including upper valve cover and lower valve cover, the outside wall of upper valve cover is provided with L type gap, the outside wall fixed setting of lower valve cover has the limit post matched with L type gap, upper valve cover with lower valve cover coaxial butt -joint, and limit post inserts in L type gap, when upper valve cover with lower valve cover relative rotation around its axle direction, limit post can be with L type gap joint, make upper valve cover with lower valve cover keep relative fixed. The utility model discloses above -mentioned setting makes and can dismantle check valve to expose its internal structure to the inside elastic piece or other parts of check valve are maintained or replaced to the adaptability demand of different scene to meet.

Description

Technical Field

[0001] This utility model relates to the field of check valves, and in particular to a detachable check valve structure and a liquid circuit reversing integrated block. Background Technology

[0002] One-way valves are key components in fluid control systems. Their core function is to enable directional flow of fluid through the one-way conduction characteristic of the valve core, thereby preventing reverse flow.

[0003] In existing technologies, check valves mostly adopt an integrated structure, meaning that the upper and lower valve covers are permanently fixed by means of threads, welding, or interference fits. The internal valve core, elastic elements (such as springs), sealing rings, and other components are integrated into a single valve cavity and cannot be disassembled independently. If problems such as spring fatigue, ball wear, or sealing ring aging occur, the entire valve body needs to be disassembled or even replaced, which is cumbersome and time-consuming.

[0004] Furthermore, due to the integrated design of the check valve, the parameters of its internal components are fixed. If the valve core or elastic element needs to be replaced to adapt to different working conditions (such as adjusting the elastic coefficient of the elastic element to meet the output of different fluid media), only the entire valve can be replaced, resulting in high costs.

[0005] Therefore, a detachable check valve structure and a fluid circuit reversing integrated block are needed to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a detachable check valve structure and a liquid circuit switching integrated block, so that the check valve can be disassembled to expose its internal structure, thereby facilitating the maintenance or replacement of the elastic elements or other components inside the check valve to meet the adaptability requirements of different scenarios.

[0007] To solve the above-mentioned technical problems, this utility model provides a detachable one-way valve structure, including an upper valve cover and a lower valve cover;

[0008] The outer wall of the upper valve cover is provided with an L-shaped notch;

[0009] The outer side wall of the lower valve cover is fixedly provided with a limiting post that matches the L-shaped notch;

[0010] The upper valve cover and the lower valve cover are coaxially connected, and the limiting post is inserted into the L-shaped notch;

[0011] When the upper valve cover and the lower valve cover rotate relative to each other about their axis, the limiting post can engage with the L-shaped notch, so that the upper valve cover and the lower valve cover remain relatively fixed.

[0012] Furthermore, the L-shaped notch includes a vertical opening and a horizontal opening that are connected together;

[0013] When the limiting post passes through the vertical opening and moves into the horizontal opening, it can limit the upper valve cover and the lower valve cover in the vertical direction.

[0014] Furthermore, an annular chamber is formed between the upper valve cover and the lower valve cover;

[0015] The annular cavity is provided with a cavity sealing ring;

[0016] When the limiting post is located within the horizontal opening, the cavity sealing ring is in a compressed state to provide an elastic force to the upper valve cover and the lower valve cover in the opposite direction of their insertion, so that the limiting post is tightly attached to the bottom wall of the inner cavity of the horizontal opening.

[0017] Furthermore, the upper valve cover has an annular protrusion extending vertically on the side facing the lower valve cover;

[0018] The upper end face of the lower valve cover is provided with a support step surface that matches the annular protrusion;

[0019] When the upper valve cover is connected to the lower valve cover, the upper valve cover, the lower valve cover, and the outer wall of the annular protrusion surround each other to form the annular cavity.

[0020] Furthermore, both the upper valve cover and the lower valve cover have through holes penetrating their upper and lower end faces. The through holes of the upper valve cover and the lower valve cover are interconnected to form a valve cavity. The valve cavity includes an upper channel, a flow control cavity, and a lower channel that are connected in sequence. The diameter of the flow control cavity is larger than the diameters of the upper channel and the lower channel.

[0021] The flow control cavity contains an elastic element and a ball bearing. The elastic element is installed on the side of the ball bearing that faces away from the upper channel.

[0022] The elastic element is in a compressed state to press the ball against the connection between the upper channel and the flow control cavity, thereby sealing the connection between the upper channel and the flow control cavity.

[0023] Furthermore, a stop seal ring is provided at the connection between the upper channel and the flow control cavity, and the ball is squeezed and adhered to the stop seal ring under the action of the elastic element.

[0024] Furthermore, the bottom wall of the flow control cavity is provided with stepped ribs for mounting the elastic element.

[0025] Furthermore, the inner wall of the flow control cavity is provided with a plurality of ribs extending along its axial direction, the ribs being used to guide the balls.

[0026] Furthermore, the elastic element is configured as a compression spring.

[0027] Furthermore, both the upper valve cover and the lower valve cover have an external connecting sealing ring embedded at their opposite ends.

[0028] On the other hand, this utility model also proposes a hydraulic circuit reversing integrated block, including an upper end cover, a lower end cover, and a detachable one-way valve structure as described in the above embodiments.

[0029] The upper end cover and the lower end cover are detachably connected and both are provided with fluid channels;

[0030] The detachable one-way valve structure is located between the upper end cover and the lower end cover, and when the detachable one-way valve is in the open state, the two fluid channels are connected.

[0031] Compared with the prior art, the present invention has at least the following beneficial effects:

[0032] By setting an L-shaped notch on the upper valve cover and setting a limiting post on the outer wall of the lower valve cover that matches the L-shaped notch, the upper and lower valve covers can be quickly disassembled and fixed by coaxial docking and rotation. This allows for quick exposure of the internal structure without tools, facilitating the maintenance or replacement of the elastic components or other parts inside the check valve to meet the needs of different scenarios.

[0033] Furthermore, by forming an annular cavity between the upper and lower valve covers, and installing a cavity sealing ring within the annular cavity, and by connecting the upper and lower valve covers to the limiting post through the L-shaped notch and keeping them relatively fixed, the cavity sealing ring is in a compressed state to provide a pre-tightening force (i.e., elastic force) for the L-shaped notch to fit tightly against the limiting post, thereby improving the stability of the connection and fixation between the upper and lower valve covers, and further ensuring that the two will not separate when not subjected to axial force. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the detachable one-way valve structure in Embodiment 1 of this utility model;

[0035] Figure 2 This is a half-sectional view of the detachable one-way valve structure in Embodiment 1 of this utility model;

[0036] Figure 3 This is a cross-sectional view of the detachable one-way valve structure in Embodiment 1 of this utility model;

[0037] Figure 4 This is a half-sectional view of the lower valve cover in the detachable one-way valve structure of Embodiment 1 of this utility model.

[0038] Figure 5This is a cross-sectional view of the lower valve cover in the detachable one-way valve structure of Embodiment 1 of this utility model;

[0039] Figure 6 This is an exploded view of the structure of the hydraulic circuit reversing integrated block in Embodiment 2 of this utility model.

[0040] Icon labels:

[0041] 1. Upper valve cover; 11. Annular protrusion;

[0042] 2. Lower valve cover; 21. Step rib; 22. Rib wall;

[0043] 3. L-shaped notch; 31. Vertical opening; 32. Horizontal opening;

[0044] 4. Limiting post;

[0045] 5. Annular chamber; 51. Chamber sealing ring;

[0046] 6. Valve cavity; 61. Elastic element; 62. Ball bearing;

[0047] 7. Stop seal ring;

[0048] 8. External connection sealing ring;

[0049] 9. Top cover;

[0050] 10. Lower end cap. Detailed Implementation

[0051] The detachable one-way valve structure and hydraulic circuit reversing integrated block of this utility model will be described in more detail below with reference to the schematic diagrams, which illustrate preferred embodiments of this utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving the advantageous effects of this utility model. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit this utility model.

[0052] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0053] Example 1

[0054] like Figures 1 to 5 As shown in the figure, this utility model embodiment proposes a detachable one-way valve structure, including an upper valve cover 1 and a lower valve cover 2.

[0055] The upper valve cover 1 has an L-shaped notch 3 on its outer side wall, and the lower valve cover 2 has a limiting post 4 that matches the L-shaped notch 3 fixedly installed on its outer side wall.

[0056] The upper valve cover 1 and the lower valve cover 2 are coaxially connected, and the limiting post 4 is inserted into the L-shaped notch 3.

[0057] In this embodiment, when the upper valve cover 1 and the lower valve cover 2 rotate relative to each other about their axis, the limiting post 4 can engage with the L-shaped notch 3, so that the upper valve cover 1 and the lower valve cover 2 remain relatively fixed.

[0058] This device, by setting an L-shaped notch 3 on the upper valve cover 1 and setting a limiting post 4 on the outer side wall of the lower valve cover 2 that matches the L-shaped notch 3, allows the upper valve cover 1 and the lower valve cover 2 to be quickly disassembled and fixed by coaxial docking and rotation. This allows the internal structure to be quickly exposed without tools, making it easier to maintain or replace the elastic element 61 or other components inside the one-way valve, in order to meet the needs of different scenarios.

[0059] In this embodiment, the L-shaped notch 3 is further defined to facilitate the explanation of the relative positional relationship between the limiting post 4 and the L-shaped notch 3 during the disassembly and assembly of the upper valve cover 1 and the lower valve cover 2, and to improve the stability of the connection between the upper valve cover 1 and the lower valve cover 2.

[0060] Specifically, the L-shaped notch 3 includes a vertical opening 31 and a horizontal opening 32 that are connected together.

[0061] When the limiting post 4 passes through the vertical opening 31 and moves into the horizontal opening 32, it can limit the upper valve cover 1 and the lower valve cover 2 in the vertical direction.

[0062] Specifically, when the upper valve cover 1 and the lower valve cover 2 are coaxially connected, the limiting post 4 is located in the vertical opening 31. When the limiting post 4 is located at the top of the vertical opening 31, the upper valve cover 1 and the lower valve cover 2 are controlled to rotate relative to each other, so that the limiting post 4 is placed in the horizontal opening 32, thereby realizing the limiting connection of the upper valve cover 1 and the lower valve cover 2 in the vertical direction.

[0063] In a further embodiment, an annular chamber 5 is formed between the upper valve cover 1 and the lower valve cover 2.

[0064] The annular chamber 5 is provided with a cavity sealing ring 51.

[0065] It should be noted that when the limiting post 4 is located within the horizontal opening 32, the cavity sealing ring 51 is in a compressed state, providing an elastic force opposite to the insertion direction to the upper valve cover 1 and the lower valve cover 2, so that the limiting post 4 is tightly attached to the bottom wall of the inner cavity of the horizontal opening 32. That is, the restoring elastic force formed by the deformation of the cavity sealing ring 51 gives the upper valve cover 1 and the lower valve cover 2 a pre-tightening force that moves away from each other, thereby making the limiting post 4 tightly attached to the bottom wall of the inner cavity of the horizontal opening 32, so as to play a pre-tightening role. That is, when the upper valve cover 1 and the lower valve cover 2 are subjected to a slight external force, under the action of frictional resistance between the limiting post 4 and the top wall of the inner cavity of the horizontal opening 32, the upper valve cover 1 and the lower valve cover 2 will not rotate relative to each other, so as to further improve the stability when the two are connected.

[0066] In this embodiment, the upper valve cover 1 has an annular protrusion 11 extending vertically on the side facing the lower valve cover 2, which is used to form an annular cavity 5 to realize the installation and positioning of the cavity sealing ring 51. When the upper valve cover 1 and the lower valve cover 2 are connected, the cavity sealing ring 51 can be reliably compressed to form a sealing structure, while also providing pre-tightening force for the abutment of the limiting post 4 and the horizontal opening 32.

[0067] The upper end face of the lower valve cover 2 is provided with a supporting step surface that matches the annular protrusion 11, so that when the upper valve cover 1 and the lower valve cover 2 are connected, the annular protrusion 11 can overlap on the supporting step surface, so that the upper valve cover 1, the lower valve cover 2 and the outer wall of the annular protrusion 11 surround to form the annular cavity 5, and the cavity sealing ring 51 is sandwiched in the annular cavity 5 to form a sealing structure.

[0068] In a further embodiment, the specific structure of the upper valve cover 1 and the lower valve cover 2 is further described to facilitate the installation of the internal elastic element 61 and the ball bearing 62 to achieve the unidirectional conduction function.

[0069] Specifically, both the upper valve cover 1 and the lower valve cover 2 have through holes penetrating their upper and lower end faces. The through holes of the upper valve cover 1 and the lower valve cover 2 are interconnected to form a valve cavity 6. The valve cavity 6 includes an upper channel, a flow control cavity, and a lower channel that are connected in sequence.

[0070] The diameter of the flow control cavity is larger than the diameters of the upper and lower channels, which facilitates the installation and positioning of the elastic element 61 and the ball bearing 62.

[0071] Specifically, the flow control cavity contains an elastic element 61 and a ball bearing 62. The elastic element 61 is installed on the side of the ball bearing 62 facing away from the upper channel. When the elastic element 61 is compressed, it presses the ball bearing 62 against the connection between the upper channel and the flow control cavity, thus closing the connection and achieving unidirectional flow.

[0072] In this embodiment, a stop seal ring 7 is provided at the connection between the upper channel and the flow control cavity. The ball 62 is squeezed and fitted with the stop seal ring 7 under the action of the elastic member 61, so that the fluid will not leak during flow and the sealing performance is improved.

[0073] The bottom wall of the flow control cavity is provided with a stepped rib 21 for installing the elastic element 61. That is, the elastic element 61 is sleeved and fixed on the stepped rib 21 and can be separated from the stepped rib 21 for easy replacement later.

[0074] In addition, the inner wall of the flow control cavity is provided with a plurality of ribs 22 extending along its axial direction. The ribs 22 are used to guide the ball 62, so that when the ball 62 is moved by the elastic force of the elastic member 61, it can only move along the axial direction of the upper valve cover 1 and the lower valve cover 2, and will not deviate, thus ensuring that the connection between the upper channel and the flow control cavity can be blocked or opened.

[0075] It should be noted that, as Figure 4 and Figure 5 As shown, the step rib 21 and the rib wall 22 are integrally formed and multiple of them are arranged in a ring shape at equal intervals inside the flow control cavity.

[0076] In one example, the elastic element 61 is configured as a compression spring.

[0077] In other embodiments, to improve the sealing performance of the detachable one-way valve structure when it is installed on other components, an external connecting sealing ring 8 is also embedded at the opposite ends of the upper valve cover 1 and the lower valve cover 2.

[0078] Example 2

[0079] like Figure 6 As shown, this embodiment proposes a hydraulic circuit reversing integrated block based on embodiment one, including an upper end cover 9, a lower end cover 10, and a detachable one-way valve structure as described in embodiment one.

[0080] The upper end cover 9 and the lower end cover 10 are detachably connected and both are provided with fluid channels for liquid transfer.

[0081] The detachable one-way valve structure is located between the upper end cover 9 and the lower end cover 10, and when the detachable one-way valve is in the open state, the two fluid channels are connected.

[0082] In summary, by setting up a hydraulic circuit reversing integrated block including a detachable one-way valve structure, an upper end cover 9, and a lower end cover 10, the various components are integrated together in a modular manner. This allows operators to quickly disassemble and assemble the hydraulic circuit reversing integrated block, facilitating the replacement of the detachable one-way valve structure located between the upper end cover 9 and the lower end cover 10. Furthermore, due to the quick-release characteristic of the detachable one-way valve structure, it is also possible to maintain or replace its internal elastic element 61 or other components (such as ball bearings 62), thereby achieving the goal of meeting the adaptability requirements of different scenarios.

[0083] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A detachable check valve structure characterized by, Includes an upper valve cover (1) and a lower valve cover (2); The outer wall of the upper valve cover (1) is provided with an L-shaped notch (3); The outer side wall of the lower valve cover (2) is fixedly provided with a limiting post (4) that matches the L-shaped notch (3); The upper valve cover (1) and the lower valve cover (2) are coaxially connected, and the limiting post (4) is inserted into the L-shaped notch (3); When the upper valve cover (1) and the lower valve cover (2) rotate relative to each other around their axis, the limiting post (4) can engage with the L-shaped notch (3) to keep the upper valve cover (1) and the lower valve cover (2) relatively fixed.

2. The releasable check valve structure of claim 1, wherein The L-shaped notch (3) includes a vertical opening (31) and a horizontal opening (32) that are connected together; When the limiting post (4) passes through the vertical opening (31) and moves into the horizontal opening (32), it can limit the upper valve cover (1) and the lower valve cover (2) in the vertical direction.

3. The releasable check valve structure of claim 2, wherein, An annular chamber (5) is formed between the upper valve cover (1) and the lower valve cover (2); A cavity sealing ring (51) is provided inside the annular cavity (5); When the limiting post (4) is located inside the horizontal opening (32), the cavity sealing ring (51) is in a compressed state to provide an elastic force to the upper valve cover (1) and the lower valve cover (2) opposite to their insertion direction, so that the limiting post (4) is tightly attached to the inner cavity bottom wall of the horizontal opening (32).

4. The releasable check valve structure of claim 3, wherein The upper valve cover (1) has an annular protrusion (11) extending vertically on the side facing the lower valve cover (2); The upper end face of the lower valve cover (2) is provided with a support step surface that matches the annular protrusion (11); When the upper valve cover (1) is connected to the lower valve cover (2), the upper valve cover (1), the lower valve cover (2), and the outer wall of the annular protrusion (11) form the annular chamber (5).

5. The detachable one-way valve structure as described in claim 1, characterized in that, Both the upper valve cover (1) and the lower valve cover (2) have through holes penetrating their upper and lower end faces. The through holes of the upper valve cover (1) and the lower valve cover (2) are interconnected to form a valve cavity (6). The valve cavity (6) includes an upper channel, a flow control cavity and a lower channel connected in sequence. The diameter of the flow control cavity is larger than the diameter of the upper channel and the lower channel. The flow control cavity contains an elastic element (61) and a ball (62), with the elastic element (61) installed on the side of the ball (62) facing away from the upper channel; The elastic element (61) is in a compressed state to press the ball (62) against the connection between the upper channel and the flow control cavity, thereby closing the connection between the upper channel and the flow control cavity.

6. The detachable one-way valve structure as described in claim 5, characterized in that, A stop seal ring (7) is provided at the connection between the upper channel and the flow control cavity, and the ball (62) is squeezed and adhered to the stop seal ring (7) under the action of the elastic member (61).

7. The detachable one-way valve structure as described in claim 5, characterized in that, The bottom wall of the flow control cavity is provided with stepped ribs (21) for mounting the elastic element (61).

8. The detachable one-way valve structure as described in claim 5, characterized in that, The inner wall of the flow control cavity is provided with a plurality of ribs (22) extending along its axial direction, and the ribs (22) are used to guide the ball (62).

9. The detachable one-way valve structure as described in claim 5, characterized in that, The elastic element (61) is configured as a compression spring.

10. The detachable one-way valve structure as described in claim 1, characterized in that, Both the upper valve cover (1) and the lower valve cover (2) are fitted with external connecting sealing rings (8) at their opposite ends.

11. A fluid circuit reversing integrated block, characterized in that, Includes an upper end cover (9), a lower end cover (10), and a detachable one-way valve structure as described in any one of claims 1-10; The upper end cover (9) and the lower end cover (10) are detachably connected and both are provided with fluid channels; The detachable one-way valve structure is placed between the upper end cover (9) and the lower end cover (10), and when the detachable one-way valve is in the open state, the two fluid channels are connected.

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