Swash plate type butterfly check valve

Abstract

The invention belongs to the field of check valves, particularly relates to a swash plate type butterfly check valve, and aims to solve the problems that an existing check valve only depends on gravity to assist in completing sealing operation, the sealing effect is poor, and impact force needed for opening a device cannot be adjusted according to different fluids. A water inlet and a water outlet are formed in the two ends of the valve body correspondingly, a mounting plate is arranged at the top of the valve body, and a cover plate is arranged at the top of the mounting plate. Water flow impacts a first circular plate to further drive a limiting plate to move transversely, a sliding block moves transversely under the elastic force action of a second spring, the braking state of a valve clack is gradually relieved, and therefore the valve clack can be braked. And when the first circular plate moves, the two circular rods are driven to move transversely, the pushing block pushes the clamping rod to move transversely and helps the clamping rod to move out, and when the impact force needed for opening the adjusting device is needed, the circular disc can be pulled firstly and then rotated, so that the torsion of the device is adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of check valves, and in particular to a tilting disc type butterfly check valve. Background Art

[0002] A check valve is a valve that has a circular disc as the opening and closing part and blocks the backflow of the medium by its own weight and the pressure of the medium. It belongs to the category of automatic valves and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. The movement of the disc is divided into lift type and swing type. The lift check valve is similar to the stop valve in structure, except that it lacks the valve stem that drives the disc. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). When the inlet pressure is greater than the sum of the weight of the disc and its flow resistance, the valve is opened. On the contrary, when the medium flows back, the valve is closed.

[0003] The utility model with announcement number CN215721030U provides a tilting disc butterfly check valve, but this check valve simply relies on gravity to help complete the sealing operation, the sealing effect is poor, and the impact force required to open the device cannot be adjusted according to different fluids. It has a small scope of application and is inconvenient to use. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the check valve in the prior art that it simply relies on gravity to help complete the sealing operation, the sealing effect is poor, the impact force required for opening the device cannot be adjusted according to the different fluids, the scope of application is small, and it is inconvenient to use. A tilted disc butterfly check valve is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A tilting disc type butterfly check valve, comprising a valve body, a water inlet and a water outlet are respectively provided at two ends of the valve body, a mounting plate is provided on the top of the valve body, a cover plate is provided on the top of the mounting plate, a plurality of fixing screws are penetrated through the internal threads of the cover plate and the mounting plate, and a nut is provided on the outer thread sleeve of the fixing screw;

[0007] The same inner rod is fixedly connected between the inner walls of both sides of the valve body, a sleeve is rotatably sleeved on the outer wall of the inner rod, a first connecting rod is fixedly connected to the outer wall of the sleeve, a valve disc is fixedly connected to one side of the first connecting rod, a sealing ring is fixedly connected to the inside of the valve body, and a same set of sealing components for sealing is arranged between the sealing ring and the valve disc;

[0008] Both sides of the valve body are threaded with mounting screws, and the interior of the mounting screws is provided with an adjustment component for adjusting the torque of the valve disc.

[0009] In one possible design, the sealing assembly includes an inner cavity opened inside the valve disc, a second circular plate is slidably connected to the interior of the inner cavity, a push rod is fixedly connected to one side of the second circular plate, one end of the push rod slides through the valve disc, and a tension spring is fixedly connected between one side of the second circular plate and an inner wall of one side of the inner cavity, and the tension spring is sleeved on the push rod.

[0010] In a possible design, rectangular holes are provided on both sides of the valve disc, and sliding grooves are provided on the top inner wall and the bottom inner wall of the rectangular hole. A slider is slidably connected inside the sliding groove, and a second spring is fixedly connected between one side of the slider and the inner wall of one side of the sliding groove. A same clamping rod is fixedly connected between the two sliders, and both ends of the clamping rod are arc-shaped, and the clamping rod is used in conjunction with the second circular plate.

[0011] In a possible design, the interior of the sealing ring is fixedly connected with two symmetrically arranged limit blocks, the inner wall of the sealing ring is fixedly connected with two symmetrically arranged strip plates, the strip plates and the limit blocks are staggered, the same annular block is fixedly connected between the two strip plates, a second connecting rod is slidably penetrated inside the annular block, one end of the second connecting rod is fixedly connected with the first circular plate, the other end of the second connecting rod is fixedly connected with the limit plate, and the limit plate is used in conjunction with the push rod.

[0012] In a possible design, the interior of the strip plate and the interior of the valve body are provided with the same strip groove, the inner wall of one side of the valve body is provided with a connecting groove, the connecting groove is engaged with the clamping rod, the interior of the valve body is provided with a connecting groove, the connecting groove connects the clamping groove and the strip groove, the interior of the connecting groove is slidably connected with a connecting plate, one end of the connecting plate is fixedly connected with a pushing block, and the pushing block is used in conjunction with the clamping rod.

[0013] In a possible design, one end of the connecting groove is fixedly connected to a sliding plate, one end of the sliding plate extends into the interior of the strip groove, two symmetrically arranged third springs are fixedly connected between one end of the sliding plate and an inner wall of one side of the strip groove, and an inclined groove is opened on one side of the sliding plate.

[0014] In a possible design, two symmetrically arranged round rods are fixedly connected to one side of the first circular plate, a circular groove is opened on one side of the strip plate, the circular groove is connected to the strip groove, and one end of the round rod extends into the inside of the circular groove.

[0015] In a possible design, the adjustment assembly includes a rotating rod that rotates and passes through the inside of the mounting screw, one end of the rotating rod is fixedly connected to a rotating block, the sliding sleeve of the rotating block is mounted on the outer wall of the inner rod, and the same torsion spring is fixedly connected between one side of the rotating block and one side of the sleeve, and the torsion spring is mounted on the inner rod.

[0016] In a possible design, a disc is slidably sleeved on the outer wall of the rotating rod, a cover is fixedly connected to one end of the rotating rod, a first spring is fixedly connected between the disc and the cover, and the first spring is sleeved on the rotating rod.

[0017] In a possible design, a plurality of positioning rods are fixedly connected to one side of the mounting screw, a plurality of positioning holes are opened inside the disc, the positioning rods are engaged with the positioning holes, and a handle is fixedly connected to one side of the disc.

[0018] In the present application, when in use, water flows in from one side of the valve disc. At this time, the clamping rod is clamped in the interior of the connecting groove, so that the valve disc is in a braking state, and the water flows impact the first circular plate, the first circular plate drives the second connecting rod to move horizontally, and the second connecting rod drives the limit plate to move horizontally;

[0019] At this time, the limit plate pushes the push rod to move horizontally, and the push rod drives the second circular plate to move horizontally. The second circular plate stretches the tension spring and no longer conflicts with the two clamping rods. At this time, the slider moves horizontally under the elastic force of the second spring, and the slider drives the clamping rod to move horizontally. At this time, the clamping rod enters the inside of the rectangular hole, gradually releasing the braking state of the valve disc.

[0020] When the first circular plate moves, it drives the two round rods to move horizontally. The round rods pass through the circular grooves and enter the interior of the strip grooves, and collide with the inclined surfaces of the inclined grooves. At this time, the round rods push the sliding plate to move horizontally, the sliding plate drives the connecting plate to move horizontally, the connecting plate drives the pushing block to move horizontally, and the pushing block pushes the card rod to move horizontally to help the card rod move out.

[0021] When the clamping rod is moved out, the braking state of the valve disc is released. The torsion spring begins to twist due to the impact of the water flow, which can make the valve disc rotate. The valve disc no longer blocks one side of the sealing ring, thereby opening the valve. When the water flow stops, the valve disc resets again under the action of gravity, thereby sealing the sealing ring again, and the clamping rod enters the interior of the connecting groove again, thereby improving the sealing performance of the device.

[0022] When the impact force required to adjust the opening of the device needs to be adjusted, the handle can be pulled horizontally, and the handle drives the disc to move horizontally. The disc slides on the outer wall of the rotating rod and squeezes the first spring. At this time, the positioning rod moves out of the positioning hole, and the handle can be turned. The handle drives the rotating rod to rotate, and the rotating rod drives the rotating block to rotate. The rotating block twists the torsion spring, and then the torsion force of the torsion spring is adjusted. The positioning hole and the positioning rod are engaged again to ensure the stability of the device and facilitate use.

[0023] Beneficial effects:

[0024] In the present invention, the inclined disc type butterfly check valve can achieve the effect of sealing the device through the sealing component, not only improving the sealing performance of the device through the engagement of the clamping rod and the connecting groove, but also releasing the brake of the valve disc through the impact of the water flow, and opening the valve normally, avoiding the problem of poor sealing performance of the device caused by multiple openings of the device when the water flow is small;

[0025] In the present invention, the inclined disc type butterfly check valve can adjust the impact force required when the device is opened by adjusting the assembly, and can be applied to different fluids, thereby improving the application range of the device;

[0026] In the present invention, water flow impacts the first circular plate, thereby driving the limit plate to move laterally, and the slider moves laterally under the elastic force of the second spring, gradually releasing the braking state of the valve disc, and when the first circular plate moves, it drives the two round rods to move laterally, and the pushing block pushes the clamping rod to move laterally to help the clamping rod move out. When the impact force required to adjust the opening of the device needs to be adjusted, the disc can be pulled first and then rotated to complete the adjustment of the torque size of the device, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional structural schematic diagram of a tilted disc type butterfly check valve proposed by the present invention;

[0028] Figure 2 This is a schematic diagram of the exploded structure of a tilted disc type butterfly check valve proposed by the present invention;

[0029] Figure 3 A schematic diagram of the three-dimensional structure of a valve disc and a sleeve in a tilting disc type butterfly check valve proposed by the present invention;

[0030] Figure 4 A three-dimensional structural schematic diagram of a torsion spring and mounting screws in a tilting disc type butterfly check valve proposed by the present invention;

[0031] Figure 5 A three-dimensional structural schematic diagram of a disc and a rotating rod in a tilting disc type butterfly check valve proposed by the present invention;

[0032] Figure 6 A schematic diagram of the three-dimensional structure of a valve disc in a tilted disc type butterfly check valve proposed by the present invention;

[0033] Figure 7 A schematic diagram of a three-dimensional cross-sectional structure of a valve disc in a tilting disc type butterfly check valve proposed by the present invention;

[0034] Figure 8 A schematic diagram of the three-dimensional structure of a clamping rod in a tilting disc type butterfly check valve proposed by the present invention;

[0035] Fig. 9A schematic diagram of the three-dimensional structure of a sealing ring and a first circular plate in a tilted disc type butterfly check valve proposed by the present invention;

[0036] Fig.10 A schematic diagram of the three-dimensional structure of a sealing ring and a strip plate in a tilting disc type butterfly check valve proposed by the present invention;

[0037] Fig.11 A schematic diagram of the three-dimensional structure of a strip plate and a sliding plate in a tilting disc type butterfly check valve proposed by the present invention.

[0038] In the figure: 1, valve body; 2, mounting screw; 3, nut; 4, fixing screw; 5, cover plate; 6, mounting plate; 7, sealing ring; 8, valve disc; 9, first connecting rod; 10, sleeve; 11, handle; 12, torsion spring; 13, inner rod; 14, rotating block; 15, rotating rod; 16, disc; 17, positioning rod; 18, positioning hole; 19, cover; 20, first spring; 21, push rod; 22, clamping rod; 23, tension spring; 24, slide groove; 25, rectangular hole; 26, inner cavity; 27, slider; 28, second spring; 29, strip plate; 30, first circular plate;

[0039] 31. Limit block; 32. Connecting groove; 33. Clamping groove; 34. Connecting plate; 35. Ring block; 36. Circular groove;

[0040] 37. Limiting plate; 38. Round rod; 39. Second connecting rod; 40. Oblique groove; 41. Sliding plate; 42. Pushing block; 43. Strip groove; 44. Third spring; 45. Second round plate. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Example 1

[0043] Reference Figure 1-11 A tilting disc type butterfly check valve, which is used in the field of check valves, comprises: a valve body 1, a water inlet and a water outlet are respectively provided at both ends of the valve body 1, a mounting plate 6 is provided on the top of the valve body 1, a cover plate 5 is provided on the top of the mounting plate 6, a plurality of fixing screws 4 are penetrated through the internal threads of the cover plate 5 and the mounting plate 6, and a nut 3 is provided on the outer wall thread sleeve of the fixing screw 4;

[0044] The same inner rod 13 is fixedly connected between the inner walls of both sides of the valve body 1, and the outer wall of the inner rod 13 is rotatably sleeved with a sleeve 10, and the outer wall of the sleeve 10 is fixedly connected with a first connecting rod 9, and a valve disc 8 is fixedly connected to one side of the first connecting rod 9. A sealing ring 7 is fixedly connected to the inside of the valve body 1, and water flows in from one side of the valve disc 8. At this time, since the clamping rod 22 is clamped in the inside of the connecting groove 32, the valve disc 8 is in a braking state, and the water flows impact the first circular plate 30, and the first circular plate 30 drives the second connecting rod 39 to move laterally, and the second connecting rod 39 drives the limit plate 37 to move laterally. The same group of sealing components for sealing is arranged between the sealing ring 7 and the valve disc 8, and the sealing component includes an inner cavity 26 opened in the valve disc 8, and the inner cavity 26 is slidably connected to The second circular plate 45 has a push rod 21 fixedly connected to one side of the second circular plate 45. One end of the push rod 21 slides through the valve disc 8. When the clamping rod 22 is moved out, the braking state of the valve disc 8 is released. Through the impact of the water flow, the torsion spring 12 begins to twist, which can make the valve disc 8 rotate. The valve disc 8 no longer blocks one side of the sealing ring 7, thereby opening the valve. When the water flow stops, the valve disc 8 is reset again under the action of gravity, thereby blocking the sealing ring 7 again. The clamping rod 22 enters the interior of the connecting groove 32 again to improve the sealing performance of the device. A tension spring 23 is fixedly connected between one side of the second circular plate 45 and the inner wall of one side of the inner cavity 26. The tension spring 23 is sleeved on the push rod 21. Rectangular holes 25 are opened on both sides of the valve disc 8. The rectangular holes 25 The top inner wall and the bottom inner wall are both provided with a slide groove 24, and a slider 27 is slidably connected inside the slide groove 24. The same second spring 28 is fixedly connected between one side of the slider 27 and the inner wall of one side of the slide groove 24. The same clamping rod 22 is fixedly connected between the two sliders 27. Both ends of the clamping rod 22 are arc-shaped. The clamping rod 22 is used in conjunction with the second circular plate 45. At this time, the limit plate 37 pushes the push rod 21 to move laterally, and the push rod 21 drives the second circular plate 45 to move laterally. The second circular plate 45 stretches the tension spring 23 and no longer conflicts with the two clamping rods 22. At this time, the slider 27 moves laterally under the elastic force of the second spring 28, and the slider 27 drives the clamping rod 22 to move laterally. At this time, the clamping rod 22 enters the interior of the rectangular hole 25, gradually releasing the valve flap 8. In the braking state, the interior of the sealing ring 7 is fixedly connected with two symmetrically arranged limit blocks 31, and the inner wall of the sealing ring 7 is fixedly connected with two symmetrically arranged strip plates 29, the strip plates 29 and the limit blocks 31 are staggered, and the same annular block 35 is fixedly connected between the two strip plates 29, and a second connecting rod 39 is slidably penetrated inside the annular block 35, one end of the second connecting rod 39 is fixedly connected with the first circular plate 30, and the other end of the second connecting rod 39 is fixedly connected with a limit plate 37, and the limit plate 37 is used in conjunction with the push rod 21, and the interior of the strip plate 29 and the interior of the valve body 1 are provided with the same strip groove 43, and the inner wall of one side of the valve body 1 is provided with a connecting groove 32, and the connecting groove 32 is engaged with the clamping rod 22, and the interior of the valve body 1 is provided with a connecting groove 32,The connecting groove 32 is connected to the card groove 33 and the strip groove 43. The connecting groove 32 is slidably connected with a connecting plate 34 inside. One end of the connecting plate 34 is fixedly connected with a pushing block 42. The pushing block 42 is used in conjunction with the card rod 22. When the first circular plate 30 moves, it drives the two round rods 38 to move horizontally. The round rods 38 pass through the circular groove 36 and enter the interior of the strip groove 43, and conflict with the inclined surface of the inclined groove 40. At this time, the round rods 38 push the sliding plate 41 to move horizontally, the sliding plate 41 drives the connecting plate 34 to move horizontally, the connecting plate 34 drives the pushing block 42 to move horizontally, and the pushing block 42 drives the card rod 22 to move horizontally, so as to help the card rod 22 move out;

[0045] Both sides of the valve body 1 are threaded with mounting screws 2, and an adjustment component for adjusting the torque of the valve disc 8 is arranged inside the mounting screws 2. The adjustment component includes a rotating rod 15 that rotates and passes through the mounting screws 2. One end of the rotating rod 15 is fixedly connected with a rotating block 14. The sliding sleeve of the rotating block 14 is arranged on the outer wall of the inner rod 13. The same torsion spring 12 is fixedly connected between one side of the rotating block 14 and one side of the sleeve 10. The torsion spring 12 is sleeved on the inner rod 13. The outer wall of the rotating rod 15 is slidably sleeved with a disc 16. One end of the rotating rod 15 is fixedly connected with a cover 19. The same first spring 20 is fixedly connected between the disc 16 and the cover 19. The first spring 20 is sleeved on the rotating rod 15. One side of the mounting screw 2 is fixedly connected with multiple A positioning rod 17 is provided inside the disk 16, and a plurality of positioning holes 18 are provided inside the positioning rod 17. The positioning rod 17 is engaged with the positioning hole 18. A handle 11 is fixedly connected to one side of the disk 16. When the impact force required to open the device needs to be adjusted, the handle 11 can be pulled laterally, and the handle 11 drives the disk 16 to move laterally. The disk 16 slides on the outer wall of the rotating rod 15 and squeezes the first spring 20. At this time, the positioning rod 17 is moved out from the inside of the positioning hole 18, and the handle 11 can be rotated. The handle 11 drives the rotating rod 15 to rotate, and the rotating rod 15 drives the rotating block 14 to rotate. The rotating block 14 twists the torsion spring 12, thereby adjusting the torque of the torsion spring 12. The stability of the device is ensured by the re-engagement of the positioning hole 18 and the positioning rod 17, and it is easy to use.

[0046] Example 2

[0047] refer to Figure 1-11 , improved on the basis of Example 1: one end of the connecting groove 32 is fixedly connected to a sliding plate 41, one end of the sliding plate 41 extends to the inside of the strip groove 43, two symmetrically arranged third springs 44 are fixedly connected between one end of the sliding plate 41 and the inner wall of one side of the strip groove 43, an inclined groove 40 is provided on one side of the sliding plate 41, two symmetrically arranged round rods 38 are fixedly connected to one side of the first circular plate 30, a circular groove 36 is provided on one side of the strip plate 29, the circular groove 36 is connected to the strip groove 43, and one end of the round rod 38 extends to the inside of the circular groove 36.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tilting disc type butterfly check valve, characterized in that: include: A valve body (1), wherein a water inlet and a water outlet are respectively provided at two ends of the valve body (1), a mounting plate (6) is provided on the top of the valve body (1), a cover plate (5) is provided on the top of the mounting plate (6), a plurality of fixing screws (4) are penetrated through the internal threads of the cover plate (5) and the mounting plate (6), and a nut (3) is provided on the outer wall thread of the fixing screw (4); An inner rod (13) is fixedly connected between the inner walls of both sides of the valve body (1), a sleeve (10) is rotatably sleeved on the outer wall of the inner rod (13), a first connecting rod (9) is fixedly connected to the outer wall of the sleeve (10), a valve flap (8) is fixedly connected to one side of the first connecting rod (9), a sealing ring (7) is fixedly connected to the inside of the valve body (1), and a same set of sealing components for sealing are arranged between the sealing ring (7) and the valve flap (8); Both sides of the valve body (1) are threaded with mounting screws (2), and an adjustment component for adjusting the torque of the valve flap (8) is arranged inside the mounting screws (2).

2. A tilting disc type butterfly check valve according to claim 1, characterized in that: The sealing assembly includes an inner cavity (26) opened inside the valve flap (8), a second circular plate (45) is slidably connected to the interior of the inner cavity (26), a push rod (21) is fixedly connected to one side of the second circular plate (45), one end of the push rod (21) slides through the valve flap (8), and a tension spring (23) is fixedly connected between one side of the second circular plate (45) and an inner wall of one side of the inner cavity (26), and the tension spring (23) is sleeved on the push rod (21).

3. The inclined disc type butterfly check valve according to claim 1, characterized in that: Rectangular holes (25) are provided on both sides of the valve flap (8), and sliding grooves (24) are provided on the top inner wall and the bottom inner wall of the rectangular hole (25). A slider (27) is slidably connected inside the sliding groove (24), and a second spring (28) is fixedly connected between one side of the slider (27) and the inner wall of one side of the sliding groove (24). A clamping rod (22) is fixedly connected between the two sliders (27), and both ends of the clamping rod (22) are arc-shaped. The clamping rod (22) is used in conjunction with the second circular plate (45).

4. The inclined disc type butterfly check valve according to claim 1, characterized in that: The interior of the sealing ring (7) is fixedly connected with two symmetrically arranged limit blocks (31), and the inner wall of the sealing ring (7) is fixedly connected with two symmetrically arranged strip plates (29), the strip plates (29) and the limit blocks (31) are staggered, and the same annular block (35) is fixedly connected between the two strip plates (29), and a second connecting rod (39) is slidably penetrated inside the annular block (35), one end of the second connecting rod (39) is fixedly connected with the first circular plate (30), and the other end of the second connecting rod (39) is fixedly connected with the limit plate (37), and the limit plate (37) is used in conjunction with the push rod (21).

5. The inclined disc type butterfly check valve according to claim 4, characterized in that: The interior of the strip plate (29) and the interior of the valve body (1) are provided with a same strip groove (43); the inner wall of one side of the valve body (1) is provided with a connecting groove (32); the connecting groove (32) is engaged with the clamping rod (22); the interior of the valve body (1) is provided with a connecting groove (32); the connecting groove (32) connects the clamping groove (33) and the strip groove (43); the interior of the connecting groove (32) is slidably connected with a connecting plate (34); one end of the connecting plate (34) is fixedly connected with a pushing block (42); the pushing block (42) is used in conjunction with the clamping rod (22).

6. The inclined disc type butterfly check valve according to claim 5, characterized in that: One end of the connecting groove (32) is fixedly connected to a sliding plate (41), one end of the sliding plate (41) extends into the interior of the strip groove (43), two symmetrically arranged third springs (44) are fixedly connected between one end of the sliding plate (41) and an inner wall of one side of the strip groove (43), and one side of the sliding plate (41) is provided with an inclined groove (40).

7. The inclined disc type butterfly check valve according to claim 4, characterized in that: One side of the first circular plate (30) is fixedly connected to two symmetrically arranged round rods (38); one side of the strip plate (29) is provided with a round groove (36); the round groove (36) is connected to the strip groove (43); one end of the round rod (38) extends into the interior of the round groove (36).

8. The inclined disc type butterfly check valve according to claim 1, characterized in that: The adjustment assembly comprises a rotating rod (15) which rotates and passes through the interior of the mounting screw (2); one end of the rotating rod (15) is fixedly connected to a rotating block (14); the rotating block (14) is slidably sleeved on the outer wall of the inner rod (13); a same torsion spring (12) is fixedly connected between one side of the rotating block (14) and one side of the sleeve (10); and the torsion spring (12) is sleeved on the inner rod (13).

9. The inclined disc type butterfly check valve according to claim 8, characterized in that: A disc (16) is slidably sleeved on the outer wall of the rotating rod (15); a cover (19) is fixedly connected to one end of the rotating rod (15); a first spring (20) is fixedly connected between the disc (16) and the cover (19); and the first spring (20) is sleeved on the rotating rod (15).

10. The inclined disc type butterfly check valve according to claim 9, characterized in that: A plurality of positioning rods (17) are fixedly connected to one side of the mounting screw (2); a plurality of positioning holes (18) are provided inside the disc (16); the positioning rods (17) are engaged with the positioning holes (18); and a handle (11) is fixedly connected to one side of the disc (16).

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