Efficient sealing leakage-proof valve casting

Abstract

An efficient sealing leakage-proof valve casting relates to the technical field of valves and comprises a valve body, a connecting pipe, a sealing pipe, a valve rod, a raft plate, a hand wheel and a flange, the connecting pipe in threaded connection is arranged above the valve body, the sealing pipe in threaded connection is arranged above the connecting pipe, the valve rod in threaded connection is arranged in the sealing pipe, the valve rod penetrates through the sealing pipe, and the hand wheel is arranged at the upper end of the valve rod. The lower end of the valve rod is rotatably connected with a raft plate, the raft plate is arranged in the valve body, a fixing groove is formed in the side face of the raft plate, and flanges are arranged at the two ends of the valve body; the flushing device is arranged on the valve body, so that deposits below a raft can be flushed away through fluid when the fluid passes through the valve, and leakage caused by the fact that the raft and the valve body cannot be tightly combined is avoided; the clamping plate is arranged on the flange, so that the joint of the valve and the pipeline is sealed, and fluid leakage is avoided; by arranging the fillable sealing ring on the valve body, the valve body can be quickly filled after the sealing ring is denatured, the shape of the sealing ring is changed, the sealing performance is improved, and leakage is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a highly efficient sealing and leakproof valve casting. Background Art

[0002] Valves are devices that control the flow of fluids by opening, closing, and adjusting. They are widely used in daily production and life. Valves should have good sealing properties to prevent fluid overflow. However, during the use of valves, fluid is prone to precipitation on the raft, causing the raft to fail to close effectively, resulting in continuous leakage of the valve. In addition, the sealing gasket of the valve is prone to aging and deformation during use, and cannot play a sealing role. It is also troublesome to replace and may even cause damage to the valve. The connection between the valve and the pipeline is also a key area for fluid leakage. Due to insufficient compression force of the sealing gasket and unsatisfactory roughness of the mating surface, fluid leakage may occur. Therefore, we propose a highly efficient sealing and leak-proof valve casting. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the present invention discloses a highly efficient sealed and leak-proof valve casting, which achieves the purpose of preventing fluid leakage in the valve during normal operation of the valve by connecting a pipe, a sealing pipe, a valve stem, a raft plate, a handwheel and a flange on the valve body.

[0004] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical scheme: a highly efficient sealed and leak-proof valve casting, including a valve body, a connecting pipe, a sealing pipe, a valve stem, a raft, a handwheel and a flange, a connecting pipe with a threaded connection is provided above the valve body, a sealing pipe with a threaded connection is provided above the connecting pipe, a valve stem with a threaded connection is provided in the sealing pipe, the valve stem passes through the sealing pipe, the connecting pipe, the sealing pipe and the valve stem have the same central axis, a handwheel is provided at the upper end of the valve stem, a raft with a rotatable connection is provided at the lower end of the valve stem, the raft is arranged in the valve body, the outer wall of the raft is close to the inner wall of the valve body, the side of the raft is provided with a fixing groove, and flanges are provided at both ends of the valve body.

[0005] A sealing ring is arranged on the side of the connecting pipe, the sealing ring is sleeved on the connecting pipe, a sealing ring is arranged below the sealing ring, the sealing ring is made of soft elastic material, and the sealing ring is arranged between the valve body and the sealing ring.

[0006] The sealing ring is a hollow structure, and two first filling holes are arranged on the sealing ring, and both of the two first filling holes are communicated with the cavity of the sealing ring.

[0007] A cleaning plate is provided on the inner wall of the valve body. The cleaning plate is arranged below the raft plate. The cleaning plate is arranged in cooperation with the fixing groove. The cleaning plate is a hollow structure. Spray holes communicating with the cleaning plate cavity are distributed on the side of the cleaning plate.

[0008] The valve body is provided with two annular grooves on the side surface near the fluid inlet end, and a flushing device is provided on the two grooves, a slide groove is provided between the two grooves, the slide groove passes through the side surface and the inner wall of the valve body, and two limit grooves are symmetrically provided on the inner wall of the slide groove. A connecting hole is provided on the valve body between the slide groove and the cleaning plate, and one end of the connecting hole passes through the inner wall of the valve body, and the other end of the connecting hole is connected to the cavity of the cleaning plate.

[0009] The flushing device includes a sleeve, a connecting rod, a top plate and a cover plate. The sleeve is arranged at one end of the valve body where fluid enters, the sleeve is sleeved on the valve body, the inner wall of the sleeve is provided with an internal thread, the connecting rod is arranged in the slide groove, the lower end of the connecting rod is provided with a thread, the lower end of the connecting rod is threadedly connected to the inner wall of the sleeve, the upper end of the connecting rod is provided with a top plate, the top plate is a slope structure, the top plate is lower than the other end from the fluid inlet end, a cover plate is provided at the lower end of the top plate, the cover plate is connected to the inner wall of the valve body away from the fluid inlet end, the other end of the cover plate abuts against the slope of the top plate, and the end of the connecting hole is arranged below the cover plate.

[0010] Both ends of the inner wall of the sleeve are provided with coaxially arranged clamping rings, and the two clamping rings are respectively arranged in corresponding clamping grooves.

[0011] Two limit blocks are symmetrically arranged on both sides of the connecting rod, the limit blocks are arranged corresponding to the limit grooves, and the two limit blocks are respectively arranged in the limit grooves on the same side.

[0012] A sealing groove is provided on the outer surface of the flange, and a sealing gasket between the valve body and the pipeline is arranged in the sealing groove. Two clamping plates are symmetrically arranged on the flange, and both clamping plates are arc-shaped structures. Arc-shaped sealing plates are provided on the sides of the two clamping plates. The flange is arranged between the two sealing plates. One end of the two clamping plates is hinged, and the other end of the two clamping plates is provided with a fixing plate, and the two fixing plates are fixed by bolts.

[0013] The splint is provided with a second filling hole, and an arc-shaped partition is provided in the middle of the inner concave surface of the splint. The partition is arranged on the outer surface of the flange. The partition is a hollow structure. The second filling hole is connected with the cavity of the partition, and through holes connected with its cavity are distributed on the side of the partition.

[0014] The high-efficiency sealed and leak-proof valve casting described in the present invention is highly practical and very convenient to use. By arranging a flushing device on the valve body, the deposits under the raft plate can be washed away by the fluid when the fluid passes through the valve, thereby avoiding leakage caused by the failure of the raft plate and the valve body to be tightly combined; by arranging a clamping plate on the flange, the connection between the valve and the pipeline is sealed to avoid fluid leakage; by arranging a fillable sealing ring on the valve body, the sealing ring can be quickly filled after it is denatured to change its shape, thereby increasing the sealing performance and reducing the occurrence of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2It is a schematic diagram of the position relationship between the sleeve, the sealing tube and the valve stem of the present invention; Figure 3 is a cross-sectional view of the valve body of the present invention; Figure 4 is a cross-sectional view of the valve body of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the splint of the present invention.

[0016] In the figure: 1 valve body, 2 sealing ring, 3 sealing tube, 4 valve stem, 5 handwheel, 6 flange, 7 splint, 8 fixing plate, 9 sealing groove, 10 sleeve, 11 connecting pipe, 12 sealing ring, 13 first filling hole, 14 raft plate, 15 fixing groove, 16 clamping ring, 17 slide groove, 18 connecting hole, 19 top plate, 20 cover plate, 21 connecting rod, 22 clamping groove, 23 cleaning plate, 24 injection hole, 25 limiting groove, 26 limiting block, 27 sealing plate, 28 partition plate, 29 second filling hole, 30 through hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0018] See also Figure 1-5 The present invention provides a technical solution: a highly efficient sealed and leak-proof valve casting, comprising a valve body 1, a connecting pipe 11, a sealing pipe 3, a valve stem 4, a raft 14, a handwheel 5 and a flange 6. A threaded connecting pipe 11 is provided above the valve body 1, a threaded sealing pipe 3 is provided above the connecting pipe 11, a threaded valve stem 4 is provided in the sealing pipe 3, the valve stem 4 passes through the sealing pipe 3, the connecting pipe 11, the sealing pipe 3 and the valve stem 4 are on the same central axis, a handwheel 5 is provided at the upper end of the valve stem 4, a rotatably connected raft 14 is provided at the lower end of the valve stem 4, the raft 14 is arranged in the valve body 1, the raft 14 moves up and down in the valve body 1, the outer wall of the raft 14 is close to the inner wall of the valve body 1, a fixing groove 15 is provided on the side of the raft 14, flanges 6 are provided at both ends of the valve body 1, and the valve body 1 is connected to a pipeline through the flange 6.

[0019] A sealing ring 2 is provided on the side of the connecting pipe 11, and the sealing ring 2 is sleeved on the connecting pipe 11. A sealing ring 12 is provided below the sealing ring 2. The sealing ring 12 is made of a soft elastic material and is arranged between the valve body 1 and the sealing ring 2. The sealing ring 12 plays a sealing role for the valve body 1 and the sealing ring 2 to prevent fluid leakage.

[0020] The sealing ring 12 is a hollow structure, and two first filling holes 13 are provided on the sealing ring 2. The two first filling holes 13 are connected to the cavity of the sealing ring 12. Glue or other liquid is added into the sealing ring 12 through any first filling hole 13 to support the gap in the cavity of the sealing ring 12, so that the sealing ring 12 swells, thereby filling the gap between the valve body 1 and the sealing ring 2 to prevent fluid leakage.

[0021] The inner wall of the valve body 1 is provided with a cleaning plate 23, which is arranged below the raft plate 14 and cooperates with the fixing groove 15. The cleaning plate 23 is a hollow structure, and the side of the cleaning plate 23 is provided with injection holes 24 connected to the cavity of the cleaning plate 23.

[0022] The valve body 1 is provided with two annular grooves 22 on the side near the fluid inlet end, and the two grooves 22 are provided with flushing devices, a slide groove 17 is provided between the two grooves 22, and the slide groove 17 passes through the side and inner wall of the valve body 1, and two limit grooves 25 are symmetrically provided on the inner wall of the slide groove 17, and a connecting hole 18 is provided on the valve body 1 between the slide groove 17 and the cleaning plate 23, one end of the connecting hole 18 passes through the inner wall of the valve body 1, and the other end of the connecting hole 18 is connected with the cavity of the cleaning plate 23, the fluid enters through one end of the connecting pipe 11, and enters the cleaning plate 23 through the connecting hole 18, and is sprayed outward from each injection hole 24, so as to avoid the deposition of internal sediment in the fluid, keep the valve body 1 clean, and facilitate the fitting of the raft plate 14 and the valve body 1.

[0023] The flushing device includes a sleeve 10, a connecting rod 21, a top plate 19 and a cover plate 20. The sleeve 10 is arranged at the fluid inlet end of the valve body 1, the sleeve 10 is sleeved on the valve body 1, the inner wall of the sleeve 10 is provided with an internal thread, the connecting rod 21 is arranged in the slide groove 17, the lower end of the connecting rod 21 is provided with a thread, the lower end of the connecting rod 21 is threadedly connected to the inner wall of the sleeve 10, and the upper end of the connecting rod 21 is provided with a top plate 19. The top plate 19 is a slope structure, the top plate 19 is lower than the other end from the fluid inlet end, and the cover plate 20 is provided at the lower end of the top plate 19. The cover plate 20 is connected to the inner wall of the valve body 1 away from the fluid inlet end, and the other end of the cover plate 20 abuts on the slope of the top plate 19. The end of the connecting hole 18 is arranged below the cover plate 20. Rotating the sleeve 10 makes the connecting rod 21 move toward the cover plate 20, and the top plate 19 lifts one end of the cover plate 20, so that the fluid enters the connecting hole 18.

[0024] The inner wall of the sleeve 10 is provided with coaxially arranged snap rings 16 at both ends. The two snap rings 16 are respectively arranged in corresponding slots 22. The snap rings 16 prevent the sleeve 10 from rotating and displacement, and also play a sealing role to prevent the fluid from flowing out of the gap between the sleeve 10 and the valve body 1.

[0025] Two limit blocks 26 are symmetrically arranged on both sides of the connecting rod 21 . The limit blocks 26 are arranged corresponding to the limit grooves 25 . The two limit blocks 26 are respectively arranged in the limit grooves 25 on the same side. The limit blocks 26 keep the connecting rod 21 moving along the slide groove 17 .

[0026] The outer surface of the flange 6 is provided with a sealing groove 9, and the sealing gasket between the valve body 1 and the pipeline is arranged in the sealing groove 9. Two clamping plates 7 are symmetrically arranged on the flange 6. The two clamping plates 7 are both arc-shaped structures. The sides of the two clamping plates 7 are provided with arc-shaped sealing plates 27. The flange 6 is arranged between the two sealing plates 27. The two sealing plates 27 fix the edge of the flange 6 to the edge of the pipeline connector. One end of the two clamping plates 7 is hinged, and the other end of the two clamping plates 7 is provided with a fixing plate 8, and the two fixing plates 8 are fixed by bolts.

[0027] The clamping plate 7 is provided with a second filling hole 29, and an arc-shaped partition 28 is provided in the middle of the inner concave surface of the clamping plate 7. The partition 28 is arranged on the outer surface of the flange 6. The partition 28 is a hollow structure. The second filling hole 29 is connected with the cavity of the partition 28. The side of the partition 28 is provided with through holes 30 connected with its cavity. Glue or other adhesives are filled into the partition 28 through the second filling hole 29. The adhesive overflows through the through hole 30 to fill the gap between the flange 6 and the edge of the pipe connector to avoid fluid overflow and leakage.

[0028] The embodiment of the invention discloses a highly efficient sealing and leak-proof valve casting. When in use, the flange 6 of the valve body 1 is fixed to the pipe connector by bolts, a sealing gasket is installed between the flange 6 and the pipe connector, a clamp is installed on the flange 6, and two fixing plates 8 are fixed by bolts, so that the partition 28 is placed between the flange 6 and the pipe connector, and adhesive such as glue is added to the partition 28 through the second filling hole 29. The adhesive overflows through the through hole 30 to fill the gap between the flange 6 and the edge of the pipe connector to prevent fluid from overflowing and leaking. The valve can be opened by turning the hand wheel 5. During the overshoot of the valve in use, the sleeve 10 can be rotated regularly to make the connecting rod 21 move toward the cover plate 2. 0 direction, the top plate 19 lifts up one end of the cover plate 20, so that the fluid enters the connecting hole 18, the fluid enters through one end of the connecting pipe 11, and enters the cleaning plate 23 through the connecting hole 18, and is sprayed outward from each spray hole 24 to avoid the fluid from generating internal sediment deposition, keep the valve body 1 clean, and facilitate the fitting of the raft plate 14 and the valve body 1. The valve body 1 and the sealing ring 2 are regularly checked. If there is a slight leakage, glue or other liquid is added into the sealing ring 12 through any first filling hole 13 to support the gap in the cavity of the sealing ring 12, so that the sealing ring 12 swells, thereby filling the gap between the valve body 1 and the sealing ring 2 to prevent fluid leakage.

[0029] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and approaches to specifically implement the technical solution. The above is only a preferred implementation scheme of the present invention, but technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, and all of them are within the scope of protection of the present invention.

Claims

1. A highly efficient sealed and leakproof valve casting, comprising a valve body (1), a connecting pipe (11), a sealing pipe (3), a valve stem (4), a raft plate (14), a hand wheel (5) and a flange (6), wherein a threaded connecting pipe (11) is provided above the valve body (1), a threaded sealing pipe (3) is provided above the connecting pipe (11), a threaded valve stem (4) is provided inside the sealing pipe (3), the valve stem (4) passes through the sealing pipe (3), the connecting pipe (11), the sealing pipe (3) and the valve stem (4) are on the same central axis, and the characteristics are as follows: A hand wheel (5) is provided at the upper end of the valve stem (4), a rotatably connected raft plate (14) is provided at the lower end of the valve stem (4), the raft plate (14) is arranged in the valve body (1), the outer wall of the raft plate (14) is closely attached to the inner wall of the valve body (1), a fixing groove (15) is provided on the side of the raft plate (14), and flanges (6) are provided at both ends of the valve body (1).

2. The high-efficiency sealing and leak-proof valve casting according to claim 1 is characterized in that: A sealing ring (2) is provided on the side of the connecting pipe (11), the sealing ring (2) is sleeved on the connecting pipe (11), a sealing ring (12) is provided below the sealing ring (2), the sealing ring (12) is made of a soft elastic material, and the sealing ring (12) is arranged between the valve body (1) and the sealing ring (2).

3. The high-efficiency sealing and leak-proof valve casting according to claim 2 is characterized in that: The sealing ring (12) is a hollow structure, and two first filling holes (13) are provided on the sealing ring (2), and the two first filling holes (13) are both connected to the cavity of the sealing ring (12).

4. The high-efficiency sealing and leak-proof valve casting according to claim 1 is characterized in that: The inner wall of the valve body (1) is provided with a cleaning plate (23), which is arranged below the raft plate (14). The cleaning plate (23) is arranged in cooperation with the fixing groove (15). The cleaning plate (23) is a hollow structure, and injection holes (24) communicating with the cavity of the cleaning plate (23) are distributed on the side of the cleaning plate (23).

5. The high-efficiency sealing and leak-proof valve casting according to claim 4 is characterized in that: The valve body (1) is provided with two annular grooves (22) on the side surface close to the fluid inlet end, and the two grooves (22) are provided with flushing devices. A slide groove (17) is provided between the two grooves (22), and the slide groove (17) passes through the side surface and the inner wall of the valve body (1). Two limit grooves (25) are symmetrically provided on the inner wall of the slide groove (17). A connecting hole (18) is provided on the valve body (1) between the slide groove (17) and the cleaning plate (23), and one end of the connecting hole (18) passes through the inner wall of the valve body (1), and the other end of the connecting hole (18) is communicated with the cavity of the cleaning plate (23).

6. The high-efficiency sealing and leak-proof valve casting according to claim 5 is characterized in that: The flushing device comprises a sleeve (10), a connecting rod (21), a top plate (19) and a cover plate (20). The sleeve (10) is arranged at a fluid inlet end of the valve body (1). The sleeve (10) is sleeved on the valve body (1). The inner wall of the sleeve (10) is provided with an internal thread. The connecting rod (21) is arranged in a slide groove (17). The lower end of the connecting rod (21) is provided with a thread. The lower end of the connecting rod (21) is threadedly connected to the inner wall of the sleeve (10). The upper end of the connecting rod (21) is provided with a top plate (19). The top plate (19) is a slope structure. The top plate (19) is lower than the other end from the fluid inlet end. The lower end of the top plate (19) is provided with a cover plate (20). The cover plate (20) is connected to the inner wall of the valve body (1) away from the fluid inlet end. The other end of the cover plate (20) abuts against the slope of the top plate (19). The end of the connecting hole (18) is arranged below the cover plate (20).

7. The high-efficiency sealing and leak-proof valve casting according to claim 6 is characterized in that: Both ends of the inner wall of the sleeve (10) are provided with coaxially arranged clamping rings (16), and the two clamping rings (16) are respectively arranged in corresponding clamping grooves (22).

8. The high-efficiency sealing and leak-proof valve casting according to claim 6 is characterized in that: Two limit blocks (26) are symmetrically arranged on both sides of the connecting rod (21), the limit blocks (26) are arranged corresponding to the limit grooves (25), and the two limit blocks (26) are respectively arranged in the limit grooves (25) on the same side.

9. The high-efficiency sealing and leak-proof valve casting according to claim 1 is characterized in that: The outer surface of the flange (6) is provided with a sealing groove (9), and a sealing gasket between the valve body (1) and the pipeline is arranged in the sealing groove (9). Two clamping plates (7) are symmetrically arranged on the flange (6), and both clamping plates (7) are arc-shaped structures. The sides of the two clamping plates (7) are provided with arc-shaped sealing plates (27). The flange (6) is arranged between the two sealing plates (27). One end of the two clamping plates (7) is hinged, and the other end of the two clamping plates (7) is provided with a fixing plate (8), and the two fixing plates (8) are fixed by bolts.

10. The high-efficiency sealing and leak-proof valve casting according to claim 9, characterized in that: The clamping plate (7) is provided with a second filling hole (29), and an arc-shaped partition (28) is provided in the middle of the inner concave surface of the clamping plate (7). The partition (28) is arranged on the outer surface of the flange (6), and the partition (28) is a hollow structure. The second filling hole (29) is connected to the cavity of the partition (28), and through holes (30) connected to the cavity of the partition (28) are distributed on the side surface of the partition (28).

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