Hinge type check valve with high stability
By introducing a buffer mechanism into the check valve, and utilizing the cooperation of components such as the annular seat, the push rod, and the slide bar, the problem of frequent compression of the buffer element caused by unstable flow rate is solved, achieving highly stable valve core operation and extending the service life of the check valve.
Patent Information
- Application Number
- CN202520685783.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-12
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-12
AI Technical Summary
In existing check valves, the spring portion of the buffer element is frequently compressed when the fluid flow rate is unstable, resulting in unstable performance and a short lifespan.
A buffer mechanism is adopted, including components such as annular seat, push rod, slide bar and tension spring. Through the cooperation of slide groove and locking block, the valve core is stably buffered and fixed, reducing the impact of fluid flow velocity fluctuations on the valve core.
It effectively reduces the impact and wear on the internal structure of the valve body, extends the service life of the buffer element, and ensures that the valve core remains stable when the flow rate fluctuates.
Smart Images
Figure CN223868608U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to valve technical field especially relates to a hinge check valve with high stability. BACKGROUND
[0002] In the field of fluid delivery, check valve is the key equipment to protect fluid unidirectional flow, is widely used in various industrial and civil systems, the traditional check valve when the valve core opens, because of fluid pressure mutation and valve core and valve seat impact, will produce larger impact force and noise, this impact not only can accelerate the wear and tear of valve body internal structure, reduce the service life of valve, still can cause pipeline vibration, influence surrounding equipment operation;
[0003] At present, some through adding buffer element in the inside in the prior art, such as the resistance rod with spring, so that the valve core can touch the resistance rod first when opening, then the elasticity of spring is used to help the valve core buffer, but it is found in practice that, due to the unstable factors of fluid flow rate, the spring part of buffer element is frequently extruded, so that the performance of buffer element is difficult to be persistent and stable, and the service life is short. UTILITY MODEL CONTENT
[0004] The utility model aims at solving the shortcomings that the performance of buffer element is difficult to be persistent and stable, and the service life is short due to the unstable factors of fluid flow rate in the prior art, and provides a hinge check valve with high stability.
[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A hinge check valve with high stability, comprising a valve body and a valve cover fixedly arranged at the top of the valve body;
[0007] A valve core is used to realize the opening and closing of the fluid passage in the valve, the inside of the valve body is fixedly provided with a hinge frame, and one end of the valve core is fixedly arranged with the hinge frame;
[0008] A buffer mechanism is used to buffer and limit the movement of the valve core, the buffer mechanism is arranged in the inside of the valve body, the buffer mechanism comprises an annular seat and a resistance rod, the annular seat is fixedly arranged on the inner wall of the valve body, an inner cavity is formed in the inside of the annular seat, the resistance rod is slidably arranged in the inside of the inner cavity, one end of the resistance rod is slidably penetrated to the outside of the annular seat and matched with the valve core, a No.
[0009] In a possible design, the buffering mechanism further comprises a sliding strip and a clamping block fixed at one end of the sliding strip, the surface of the annular seat is provided with a sliding groove, the sliding strip is slidingly arranged in the sliding groove, the end of the sliding strip close to the clamping block and the clamping block are both located outside the sliding groove, the valve core is provided with a groove at one side, the inner wall of the groove is provided with a clamping groove, and the clamping block is matched with the clamping groove.
[0010] In a possible design, the end of the sliding strip and the bottom of the clamping block are both provided with inclined surfaces.
[0011] In a possible design, the inner wall of the sliding groove is fixedly provided with a limiting rod, the sliding strip is slidingly arranged on the outer wall of the limiting rod, the outer wall of the limiting rod is sleeved with a second tension spring, and the two ends of the second tension spring are fixedly arranged at one end of the sliding strip and the inner wall of the sliding groove.
[0012] In a possible design, the buffering mechanism further comprises a sliding cylinder, the sliding cylinder is slidingly arranged on the inner wall of the annular seat, the inner wall of the annular seat is provided with a through hole, the through hole is communicated with the sliding groove, the outer wall of the sliding cylinder is fixedly provided with a connecting block, the connecting block is located in the through hole, and the connecting block is fixedly arranged at one side of the sliding strip.
[0013] In a possible design, one end of the outer wall of the sliding cylinder is fixedly sleeved with a contact ring.
[0014] In a possible design, one end of the limiting rod located outside the inner cavity is fixedly provided with a rubber pad.
[0015] In the application, when the fluid passes from the side close to the valve core, the valve core will be pushed to rotate through the hinge frame, at this time, the check valve is in an open state, before the valve core moves to open and touches the inner wall of the valve body, the limiting rod will be touched, at this time, the first tension spring will be stretched to achieve the buffering effect, and when the valve core moves, the lower frame part of the groove will touch the inclined surfaces of the end of the sliding strip and the bottom of the clamping block to push the sliding strip to move leftward, then the clamping block will extend into the groove, at this time, the second tension spring will be stretched, when the clamping block moves to one side of the clamping groove, the sliding strip will be reset through the second tension spring to move the clamping block into the clamping groove, so as to fix the valve core, when the fluid passes from the side away from the valve core, the fluid will touch the contact ring to push the sliding cylinder to move, the sliding cylinder will drive the sliding strip to move through the connecting block, so that the clamping block is separated from the inside of the clamping groove, at this time, the valve core will be unfixed, then the valve core will be reset under the influence of the fluid and its own gravity, and the check valve will be in a closed state.
[0016] In this utility model, the hinged check valve with high stability can achieve the following through the abutment of the buffer mechanism: when the fluid starts to flow in the forward direction and pushes the valve core to rotate around the hinge frame to open, due to the elastic effect of the first tension spring, the abutment will generate a certain resistance on the valve core, slow down the opening speed of the valve core, avoid it from being opened quickly due to sudden force, and reduce the impact and wear on the internal structure of the valve body.
[0017] In this utility model, the highly stable hinged check valve, through the locking block of the buffer mechanism, can fix the valve core inside when the check valve is in the open state, thereby avoiding the problem that the valve core will frequently squeeze the rod due to unstable fluid flow rate, thus ensuring the service life of the No. 1 tension spring.
[0018] In this invention, during use, it can achieve a buffering effect, reducing the impact and wear on the internal structure of the valve body. It can also automatically fix the valve core when it is opened, thereby preventing unstable fluid from frequently pushing the valve core to squeeze the buffer spring, thus ensuring its service life. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the main structure of a hinged check valve with high stability proposed in this utility model.
[0020] Figure 2 This is a cross-sectional structural diagram of a hinged check valve with high stability proposed in this utility model.
[0021] Figure 3 This utility model Figure 2 Enlarged view of the structure of section A;
[0022] Figure 4 This utility model Figure 2 Enlarged view of the structure of section B.
[0023] In the diagram: 1. Valve body; 2. Valve cover; 3. Hinge frame; 4. Valve core; 5. Slot; 6. Groove; 7. Annular seat; 8. Tension spring No. 1; 9. Abutment rod; 10. Slide bar; 11. Locking block; 12. Through hole; 13. Connecting block; 14. Slide cylinder; 15. Contact ring; 16. Tension spring No. 2; 17. Limiting rod; 18. Slide groove; 19. Inner cavity. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] Example 1
[0026] ReferenceFigures 1-2 The application relates to a check valve, which comprises a valve body 1 integrally cast, a valve cover 2 fixed on the top of the valve body 1 by bolts, a valve core 4 arranged in the valve body 1 and used for controlling the opening and closing of a fluid passage, and a hinge frame 3 fixedly arranged in the valve body 1, one end of the valve core 4 being fixedly connected with the hinge frame 3 so that the valve core 4 can rotate around the hinge frame 3 to realize the opening and closing actions.
[0027] With reference to Figures 3-4 A buffering mechanism is arranged in the valve body 1 and used for buffering and limiting the movement of the valve core 4. Specifically, the buffering mechanism comprises an annular seat 7 and a resisting rod 9. The annular seat 7 is fixedly arranged on the inner wall of the valve body 1 and is internally provided with an inner cavity 19. The resisting rod 9 is slidingly arranged in the inner cavity 19 and slidingly penetrates through one end of the annular seat 7 to the outside of the annular seat 7 and is matched with the valve core 4. A first tension spring 8 is arranged on the outer wall of the resisting rod 9, and two ends of the first tension spring 8 are fixedly arranged on the outer wall of the resisting rod 9 and the inner wall of the inner cavity 19 respectively to provide elastic support for the resisting rod 9.
[0028] Specifically, when the fluid starts to flow in the positive direction and pushes the valve core 4 to rotate around the hinge frame 3 to open, the valve core 4 has a high speed in the initial stage of movement. Due to the elastic action of the first tension spring 8, the resisting rod 9 can generate a certain resistance to the valve core 4 to slow down the opening speed of the valve core 4, so that the valve core 4 is prevented from being suddenly impacted and opened at a high speed and the impact and abrasion of the internal structure of the valve body 1 are reduced.
[0029] The buffering mechanism further comprises a sliding strip 10 and a clamping block 11 fixedly arranged on one end of the sliding strip 10. The annular seat 7 is provided with a sliding groove 18 on the surface, and the sliding strip 10 is slidingly arranged in the sliding groove 18. The end of the sliding strip 10 close to the clamping block 11 and the clamping block 11 are both located outside the sliding groove 18 and are both provided with inclined surfaces. The valve core 4 is provided with a recess 6 on one side, and the inner wall of one side of the recess 6 is provided with a clamping groove 5. The clamping block 11 is matched with the clamping groove 5. When the valve core 4 is opened, the clamping block 11 will be clamped into the clamping groove 5, so that the valve core 4 is fixed, thereby avoiding that the fluid flow rate is unstable and the resisting rod 9 and the first tension spring 8 on the outer wall are continuously pressed.
[0030] For the sliding and resetting of the sliding strip 10, a limiting rod 17 is fixedly arranged in the sliding groove 18, and the sliding strip 10 is slidingly arranged on the outer wall of the limiting rod 17. The limiting rod 17 is provided with a second tension spring 16, and two ends of the second tension spring 16 are fixedly arranged on one end of the sliding strip 10 and one side of the inner wall of the sliding groove 18 respectively.
[0031] Specifically, when the fluid passes from the side close to the valve core 4, the valve core 4 will be pushed to rotate through the hinge frame 3, at this time the check valve is in the open state, before the valve core 4 moves to open and touches the inner wall of the valve body 1, it will touch the buffer effect of the resistance rod 9, and when the valve core 4 moves, the lower frame part of the groove 6 will touch the one end of the slide bar 10 and the inclined surface at the bottom of the clamping block 11, thereby pushing the slide bar 10 to displace leftward, and then the clamping block 11 will extend into the inside of the groove 6, and at this time the second tension spring 16 will be stretched, when the clamping block 11 moves to one side of the clamping groove 5, the slide bar 10 will reset through the second tension spring 16, thereby moving the clamping block 11 into the inside of the clamping groove 5, so as to fix the valve core 4 to ensure stability, thereby avoiding the phenomenon of frequent extrusion of the elastic member.
[0032] The present application can be used in the field of valves, and can also be used in other fields applicable to the present application.
[0033] Embodiment 2
[0034] Reference Figure 4 On the basis of embodiment one, a hinge type check valve with high stability is improved, which is applied to the field of valves, and the buffer mechanism further comprises a sliding cylinder 14. The sliding cylinder 14 is slidingly arranged on the inner wall of the annular seat 7, the inner wall of the annular seat 7 is provided with a through hole 12, and the through hole 12 is in communication with a sliding groove 18. The outer wall of the sliding cylinder 14 is fixedly provided with a connecting block 13, the connecting block 13 is located in the inside of the through hole 12 and is fixedly arranged on one side of the slide bar 10, when the sliding cylinder 14 moves leftward, the fixing of the valve core 4 can be re-released, and one end of the outer wall of the sliding cylinder 14 is fixedly sleeved with a contact surface ring 15.
[0035] Specifically, when the fluid passes from the side away from the valve core 4, the fluid will impact the contact surface ring 15, thereby pushing the sliding cylinder 14 to move, the sliding cylinder 14 will drive the slide bar 10 to move through the connecting block 13, so that the clamping block 11 is separated from the inside of the clamping groove 5, at this time the valve core 4 will be released, and then the valve core 4 will be reset under the influence of the fluid and its own gravity, and the check valve will be in a closed state.
[0036] In order to reduce the direct impact between the resistance rod 9 and the valve core 4, the one end of the resistance rod 9 located outside the inner cavity 19 is fixedly provided with a rubber pad. The rubber pad can further play a buffering role, reduce the impact force of the resistance rod 9 on the valve core 4, and improve the service life of the check valve.
[0037] The drawings in the specification of the present application are only of a schematic nature, and the size and shape of each component shown are not actual limitations, but only a kind of schematic representation. In the actual implementation process, each component can be reasonably configured and adjusted according to specific needs and actual conditions.
[0038] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A hinged check valve with high stability, characterized in that, include: Valve body (1) and valve cover (2) fixedly installed on the top of valve body (1); The valve core (4) is used to open and close the fluid passage inside the valve. The valve body (1) is fixedly provided with a hinge frame (3). The valve core (4) is fixedly provided with one end of the hinge frame (3). A buffer mechanism is used to buffer and limit the movement of the valve core (4). The buffer mechanism is located inside the valve body (1). The buffer mechanism includes an annular seat (7) and a stop rod (9). The annular seat (7) is fixedly installed on the inner wall of the valve body (1). An inner cavity (19) is opened inside the annular seat (7). The stop rod (9) is slidably installed inside the inner cavity (19). One end of the stop rod (9) slides through to the outside of the annular seat (7) and cooperates with the valve core (4). A first tension spring (8) is sleeved on the outer wall of the stop rod (9). The two ends of the first tension spring (8) are respectively fixedly installed on the outer wall of the stop rod (9) and the inner wall of the inner cavity (19).
2. The hinged check valve with high stability according to claim 1, characterized in that, The buffer mechanism also includes a slide bar (10) and a locking block (11) fixedly disposed at one end of the slide bar (10). The surface of the annular seat (7) is provided with a sliding groove (18). The slide bar (10) is slidably disposed inside the sliding groove (18). The end of the slide bar (10) near the locking block (11) and the locking block (11) are both located outside the sliding groove (18). A groove (6) is provided on one side of the valve core (4). A locking groove (5) is provided on the inner wall of one side of the groove (6), and the locking block (11) cooperates with the locking groove (5).
3. A hinged check valve with high stability according to claim 2, characterized in that, Therefore, one end of the slider (10) and the bottom of the block (11) are both set as slopes.
4. A hinged check valve with high stability according to claim 3, characterized in that, A limiting rod (17) is fixedly installed inside the slide groove (18), and the slide bar (10) is slidably sleeved on the outer wall of the limiting rod (17). A second tension spring (16) is sleeved on the outer wall of the limiting rod (17), and the two ends of the second tension spring (16) are respectively fixedly installed on one end of the slide bar (10) and one side of the inner wall of the slide groove (18).
5. A hinged check valve with high stability according to claim 4, characterized in that, The buffer mechanism also includes a slide cylinder (14), which is slidably disposed on the inner wall of the annular seat (7). The inner wall of the annular seat (7) has a through hole (12) and the through hole (12) is connected to the slide groove (18). A connecting block (13) is fixedly disposed on the outer wall of the slide cylinder (14). The connecting block (13) is located inside the through hole (12) and is fixedly disposed on one side of the slide bar (10).
6. A hinged check valve with high stability according to claim 5, characterized in that, A contact ring (15) is fixedly sleeved on one end of the outer wall of the slide cylinder (14).
7. A hinged check valve with high stability according to claim 1, characterized in that, A rubber pad is fixedly installed at one end of the abutment (9) located outside the inner cavity (19).