High-pressure sealing check valve

Abstract

The invention relates to the technical field of high-pressure sealing check valves, in particular to a high-pressure sealing check valve which comprises a check valve body, a valve plate, a valve rod and a valve rod. A stress block is fixed to the surface of the sealing ring, a fixing rod is arranged in the check valve, a fixing rod is arranged at the bottom of the fixing rod, a connecting rod is fixed to the bottom of the fixing rod, a sliding groove is formed in the top of the pushing block, and the connecting rod is inserted into the sliding groove; the first inserting rod is arranged at the bottom of the pushing block; the check valve has the beneficial effects that when a first spring abuts against the valve plate to descend, a fixing rod in the valve plate moves relative to the valve plate, the fixing rod is fixed in the check valve, and the end, located in the valve plate, of the fixing rod ascends relative to the valve plate in the valve plate; and a second inserting rod at the bottom of the fixing rod is inserted into the pushing block, so that the fixing rod and the pushing block are relatively stable, and the pushing block ascends relative to the valve plate along with the fixing rod.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure sealing check valves, in particular to a high-pressure sealing check valve. Background Art

[0002] A check valve is a valve whose opening and closing parts are round discs and which rely on their own weight and medium pressure to produce movement to block the backflow of the medium. It belongs to the category of automatic valves and is also called non-return valve, one-way valve, reflux valve or isolation valve. The disc movement modes are divided into lifting type and swing type;

[0003] In the prior art, after long-term use, the sealing ring on the surface of the valve used to block the medium diversion inside the check valve will deform due to aging, resulting in poor sealing performance of the sealing ring after aging and deformation, affecting the sealing performance of the check valve. Summary of the invention

[0004] The object of the present invention is to provide a high-pressure pressure-sealed check valve to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a high-pressure pressure sealing check valve, comprising:

[0006] A check valve, wherein a valve plate is arranged inside the check valve;

[0007] A sealing ring, a force block is fixed on the surface of the sealing ring, a fixing rod is arranged inside the check valve, a fixing rod is arranged at the bottom of the fixing rod, a connecting rod is fixed at the bottom of the fixing rod, a sliding groove is opened on the top of the push block, and the connecting rod is inserted into the sliding groove; and

[0008] The first plug-in rod is arranged at the bottom of the push block.

[0009] Preferably, a water inlet and a water outlet are provided inside the check valve, and the valve plate can be raised and lowered inside the check valve. A first lifting rod is fixed on the top of the valve plate, and the first lifting rod is inserted into the inside of the check valve. The first lifting rod is raised and lowered along with the valve plate. A first spring is connected to the top of the first lifting rod, and the other end of the first spring is connected to the inside of the check valve. A sealing ring is provided on the surface of the valve plate.

[0010] Preferably, a force-bearing block is provided inside the valve plate, the force-bearing block is fixed on the surface of the sealing ring, and when the force-bearing block moves, the sealing ring moves with the force-bearing block, and the sealing ring is located between the valve plate and the inner wall of the check valve.

[0011] Preferably, a second lifting rod is inserted into the bottom of the valve plate, and the second lifting rod can move inside the valve plate. A second spring is arranged on the surface of the second lifting rod, one end of the second spring is connected to the bottom of the valve plate, and the other end is connected to the surface of the force-bearing plate. The force-bearing plate is fixed at the bottom of the second lifting rod, and the second lifting rod is lifted and lowered along with the force-bearing plate.

[0012] Preferably, a first plug-in rod is fixed to the surface of the force-bearing plate, and the first plug-in rod is raised and lowered along with the force-bearing plate. A pushing block is provided at the bottom of the first plug-in rod, and the first plug-in rod is inserted into the inside of the pushing block. When the first plug-in rod is raised and lowered along with the force-bearing plate, one end of the first plug-in rod located inside the pushing block can be raised and lowered inside the pushing block.

[0013] Preferably, the connecting rod at the bottom of the fixed rod can move in the slide groove at the top of the pushing block, and the cross-section of the connecting rod is T-shaped, the cross-section of the slide groove is T-shaped, and a second plug-in rod is fixed to the bottom of the fixed rod, the other end of the second plug-in rod is plugged into the inside of the pushing block, and one end of the second plug-in rod located inside the pushing block can move inside the pushing block, and the position where the second plug-in rod is plugged into the inside of the pushing block corresponds to the position where the first plug-in rod is plugged into the inside of the pushing block.

[0014] Preferably, the first plug rod can be supported on the end of the second plug rod when moving inside the push block, and after the second plug rod is supported by the first plug rod, it moves inside the push block along with the support of the first plug rod.

[0015] Preferably, a third spring is provided in the slide groove, one end of the third spring is connected to the inner wall of the slide groove, and the other end of the third spring is connected to the surface of the connecting rod.

[0016] Preferably, a plurality of groups of force blocks are arranged on the surface of the sealing ring, and a plurality of groups of fixing rods and pushing blocks are arranged, and the plurality of groups of fixing rods and pushing blocks correspond to the force blocks.

[0017] Preferably, the force-bearing plate is in close contact with the inner wall of the check valve, and the pressure of the medium in the water inlet is held against the surface of the force-bearing plate when the medium moves.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention proposes that when the first spring pushes the valve plate to descend, the fixed rod inside the valve plate and the valve plate move relative to each other, and the fixed rod is fixed inside the check valve, so that one end of the fixed rod located inside the valve plate rises relative to the valve plate inside the valve plate, and the second plug-in rod at the bottom of the fixed rod is plugged into the inside of the pushing block, so that the fixed rod and the pushing block are relatively stable. As the fixed rod rises relative to the valve plate, the pushing block is supported on the surface of the force-bearing block, so that the force-bearing block drives the sealing ring to extend from the surface of the valve plate, and when the sealing ring is deformed, it can still play a sealing role under the support of the force-bearing block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the sealing ring structure of the present invention.

[0022] Figure 3 This is a schematic structural diagram of the sealing ring of the present invention from another perspective.

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the sealing ring of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the load-bearing plate of the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the push block of the present invention.

[0026] In the figure: check valve 1, first spring 2, first lifting rod 3, water inlet 4, valve plate 5, water outlet 6, fixing rod 7, pushing block 8, force plate 9, sealing ring 10, force block 11, second spring 12, second lifting rod 13, first plug rod 15, connecting rod 16, second plug rod 17, slide groove 19, third spring 20. DETAILED DESCRIPTION

[0027] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 6 The present invention provides a technical solution: a high-pressure pressure sealing check valve, comprising:

[0029] The check valve 1 is provided with a valve plate 5 inside, and a water inlet 4 and a water outlet 6 are provided inside the check valve 1. The valve plate 5 can be lifted and lowered inside the check valve 1. A first lifting rod 3 is fixed on the top of the valve plate 5. The first lifting rod 3 is plugged into the inside of the check valve 1. The first lifting rod 3 is lifted and lowered along with the valve plate 5. A first spring 2 is connected to the top of the first lifting rod 3. The other end of the first spring 2 is connected to the inside of the check valve 1. A sealing ring 10 is provided on the surface of the valve plate 5. The surface of the sealing ring 10 is provided with There are multiple groups of force blocks 11, and multiple groups of fixed rods 7 and push blocks 8 are provided, and the multiple groups of fixed rods 7 and push blocks 8 correspond to the force blocks 11. The valve plate 5 is provided with a force block 11 inside, and the force block 11 is fixed on the surface of the sealing ring 10. When the force block 11 moves, the sealing ring 10 moves with the force block 11. The sealing ring 10 is located between the valve plate 5 and the inner wall of the check valve 1. The bottom of the valve plate 5 is plugged with a second lifting rod 13, and the second lifting rod 13 can move inside the valve plate 5. A second spring 12 is arranged on the surface of the second lifting rod 13, one end of the second spring 12 is connected to the bottom of the valve plate 5, and the other end is connected to the surface of the force-bearing plate 9. The force-bearing plate 9 is closely attached to the inner wall of the check valve 1. When the medium in the water inlet 4 moves, the pressure is held on the surface of the force-bearing plate 9. The force-bearing plate 9 is fixed to the bottom of the second lifting rod 13. The second lifting rod 13 is lifted and lowered along with the force-bearing plate 9. A first plug-in rod 15 is fixed to the surface of the force-bearing plate 9. The first plug-in rod 15 is lifted and lowered along with the force-bearing plate 9. A push block 8 is provided at the bottom of the first plug rod 15, and the first plug rod 15 is plugged into the inside of the push block 8. When the first plug rod 15 is lifted and lowered along with the force plate 9, one end of the first plug rod 15 located inside the push block 8 can be lifted and lowered inside the push block 8, and the force plate 9 drives the first plug rod 15 to rise. After the first plug rod 15 rises, it is supported at the bottom of the second plug rod 17, so that the second plug rod 17 is moved out of the push block 8, and the second plug rod 17 is no longer plugged into the inside of the push block 8.

[0030] A force block 11 is fixed on the surface of the sealing ring 10, a fixing rod 7 is arranged inside the check valve 1, a fixing rod 7 is arranged at the bottom of the fixing rod 7, a connecting rod 16 is fixed at the bottom of the fixing rod 7, a slide groove 19 is provided on the top of the pushing block 8, a third spring 20 is arranged in the slide groove 19, one end of the third spring 20 is connected to the inner wall of the slide groove 19, and the other end of the third spring 20 is connected to the surface of the connecting rod 16, the force block 11 is supported on the surface of the pushing block 8, and the connecting rod 16 moves relatively in the slide groove 19 to compress the third spring 20. Since the fixing rod 7 remains stable, the pushing block 8 moves. After the force block 11 lacks the pushing of the pushing block 8, the sealing ring 10 is retracted into the inside of the valve plate 5, the connecting rod 16 is inserted in the slide groove 19, and the connecting rod 16 at the bottom of the fixing rod 7 is inserted into the slide groove 19. 6 can move in the slide groove 19 at the top of the pushing block 8, and the cross-section of the connecting rod 16 is T-shaped, the cross-section of the slide groove 19 is T-shaped, and a second plug-in rod 17 is fixed to the bottom of the fixing rod 7, and the other end of the second plug-in rod 17 is plugged into the inside of the pushing block 8. One end of the second plug-in rod 17 located inside the pushing block 8 can move inside the pushing block 8, and the position where the second plug-in rod 17 is plugged into the inside of the pushing block 8 corresponds to the position where the first plug-in rod 15 is plugged into the inside of the pushing block 8. When the first plug-in rod 15 moves inside the pushing block 8, it can be supported at the end of the second plug-in rod 17. After the second plug-in rod 17 is supported by the first plug-in rod 15, it moves inside the pushing block 8 as the first plug-in rod 15 supports it; the first plug-in rod 15 is arranged at the bottom of the pushing block 8.

[0031] When the medium flows into the water inlet 4, the valve plate 5 is pushed by pressure, so that the first lifting rod 3 rises and squeezes the first spring 2, and the medium can enter the water outlet 6. When the medium in the water outlet 6 wants to flow back, the bottom of the valve plate 5 is held on the bottom of the water inlet 4 due to the pushing of the first spring 2, and the medium in the water outlet 6 cannot flow back into the water inlet 4. When the first spring 2 pushes the valve plate 5 down, due to the descent of the valve plate 5, the fixed rod 7 inside the valve plate 5 and the valve plate 5 move relative to each other. The fixed rod 7 is fixed to the inside of the check valve 1, so that the end of the fixed rod 7 located inside the valve plate 5 rises relative to the valve plate 5 inside the valve plate 5, and the second plug-in rod 17 at the bottom of the fixed rod 7 is plugged into the inside of the push block 8, so that the fixed rod 7 and the push block 8 are relatively stable. As the fixed rod 7 rises relative to the valve plate 5, the push block 8 is held on the surface of the force-bearing block 11, so that the force-bearing block 11 After the force block 11 is pressed against the surface of the push block 8, the connecting rod 16 moves relatively in the slide groove 19 to compress the third spring 20. Since the fixed rod 7 remains stable, the push block 8 moves. After the force block 11 lacks the push of the push block 8, the sealing ring 10 is retracted into the interior of the valve plate 5, which is convenient for the medium in the water inlet 4 to push the valve plate 5, and the check valve 1 works normally.

[0032] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A high pressure sealing check valve, characterized in that: include: A check valve (1), wherein a valve plate (5) is arranged inside the check valve (1); A sealing ring (10), a force bearing block (11) is fixed on the surface of the sealing ring (10), a fixing rod (7) is arranged inside the check valve (1), a fixing rod (7) is arranged at the bottom of the fixing rod (7), a connecting rod (16) is fixed at the bottom of the fixing rod (7), a sliding groove (19) is provided at the top of the push block (8), and the connecting rod (16) is inserted into the sliding groove (19); and The first plug-in rod (15) is arranged at the bottom of the push block (8).

2. A high pressure sealing check valve according to claim 1, characterized in that: The check valve (1) is provided with a water inlet (4) and a water outlet (6) inside. The valve plate (5) can be raised and lowered inside the check valve (1). A first lifting rod (3) is fixed on the top of the valve plate (5). The first lifting rod (3) is inserted into the inside of the check valve (1). The first lifting rod (3) is raised and lowered along with the valve plate (5). A first spring (2) is connected to the top of the first lifting rod (3). The other end of the first spring (2) is connected to the inside of the check valve (1). A sealing ring (10) is provided on the surface of the valve plate (5).

3. A high pressure sealing check valve according to claim 2, characterized in that: A force-bearing block (11) is arranged inside the valve plate (5). The force-bearing block (11) is fixed on the surface of the sealing ring (10). When the force-bearing block (11) moves, the sealing ring (10) moves along with the force-bearing block (11). The sealing ring (10) is located between the valve plate (5) and the inner wall of the check valve (1).

4. A high pressure sealing check valve according to claim 3, characterized in that: A second lifting rod (13) is inserted into the bottom of the valve plate (5), and the second lifting rod (13) can move inside the valve plate (5). A second spring (12) is arranged on the surface of the second lifting rod (13), and one end of the second spring (12) is connected to the bottom of the valve plate (5), and the other end is connected to the surface of the force-bearing plate (9). The force-bearing plate (9) is fixed to the bottom of the second lifting rod (13), and the second lifting rod (13) is lifted and lowered along with the force-bearing plate (9).

5. A high pressure sealing check valve according to claim 4, characterized in that: A first plug-in rod (15) is fixed on the surface of the force-bearing plate (9), and the first plug-in rod (15) is lifted and lowered along with the force-bearing plate (9). A push block (8) is arranged at the bottom of the first plug-in rod (15), and the first plug-in rod (15) is inserted into the inside of the push block (8). When the first plug-in rod (15) is lifted and lowered along with the force-bearing plate (9), one end of the first plug-in rod (15) located inside the push block (8) can be lifted and lowered inside the push block (8).

6. A high pressure sealing check valve according to claim 5, characterized in that: The connecting rod (16) at the bottom of the fixed rod (7) can move in the slide groove (19) at the top of the push block (8), and the cross section of the connecting rod (16) is T-shaped, and the cross section of the slide groove (19) is T-shaped. A second plug-in rod (17) is fixed at the bottom of the fixed rod (7), and the other end of the second plug-in rod (17) is plugged into the inside of the push block (8). One end of the second plug-in rod (17) located inside the push block (8) can move inside the push block (8), and the position where the second plug-in rod (17) is plugged into the inside of the push block (8) corresponds to the position where the first plug-in rod (15) is plugged into the inside of the push block (8).

7. A high pressure sealing check valve according to claim 6, characterized in that: The first plug rod (15) can be supported on the end of the second plug rod (17) when moving inside the push block (8); after the second plug rod (17) is supported by the first plug rod (15), it moves inside the push block (8) along with the support of the first plug rod (15).

8. A high pressure sealing check valve according to claim 7, characterized in that: A third spring (20) is arranged in the slide groove (19), one end of the third spring (20) is connected to the inner wall of the slide groove (19), and the other end of the third spring (20) is connected to the surface of the connecting rod (16).

9. A high pressure sealing check valve according to claim 8, characterized in that: The surface of the sealing ring (10) is provided with a plurality of force blocks (11), and a plurality of fixing rods (7) and pushing blocks (8) are provided, and the plurality of fixing rods (7) and pushing blocks (8) correspond to the force blocks (11).

10. A high pressure sealing check valve according to claim 9, characterized in that: The force-bearing plate (9) is closely attached to the inner wall of the check valve (1), and the pressure of the medium in the water inlet (4) is held against the surface of the force-bearing plate (9) when the medium moves.

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