An S-shaped spherical butterfly plate soft-sealing butterfly valve

Abstract

The present invention discloses an S-shaped spherical butterfly plate soft-sealing butterfly valve, which includes a valve body. A support cylinder is fixedly connected to the top of the valve body. A speed reduction device is communicated with the top of the support cylinder. A rotating disc is arranged on the back of the speed reduction device. A shaft sleeve is fixedly connected to the bottom of the valve body. A valve rod is arranged inside both the shaft sleeve and the speed reduction device. In the present invention, the S-shaped butterfly plate quickly guides the water to flow through the arc, and then the arc groove seals the gap between the valve body and the S-shaped butterfly plate through the sealing strip and the rubber sleeve. Finally, the sealing mechanism seals the top and bottom of the S-shaped butterfly plate, thereby having the advantage of being convenient for diversion and sealing, and solving the problems that the raft plate of the existing soft-sealing butterfly valve is disc-shaped, which is easy to block the water flow during the opening process, the diversion speed is slow, and at the same time, it is easy to cause a large degree of extrusion deformation of the sealing ring, and to a certain extent, improving the practicability of the soft-sealing butterfly valve.

Description

Technical Field

[0001] The present invention relates to the technical field of soft-sealed butterfly valves, and particularly to an S-shaped spherical butterfly plate soft-sealed butterfly valve. Background Art

[0002] A butterfly valve, also called a flap valve, is a simple-structured regulating valve. A butterfly valve used for the on-off control of a medium in a low-pressure pipeline refers to a valve in which the closing member (valve flap or butterfly plate) is a disc and rotates around the valve shaft to achieve opening and closing.

[0003] Butterfly valves are further divided into soft-sealed butterfly valves and hard-sealed butterfly valves. However, the valve plate of the existing soft-sealed butterfly valve is disc-shaped. During the opening process, it is easy to block the water flow, the flow guiding speed is slow, and at the same time, it is easy to cause a large degree of extrusion deformation of the sealing ring, which reduces the practicability of the soft-sealed butterfly valve to a certain extent. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides an S-shaped spherical butterfly plate soft-sealed butterfly valve, which has the advantages of being convenient for flow guiding and sealing, and solves the problems that the valve plate of the existing soft-sealed butterfly valve is disc-shaped, easy to block the water flow during the opening process, slow in flow guiding speed, and easy to cause a large degree of extrusion deformation of the sealing ring.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the present invention provides the following technical solution: An S-shaped spherical butterfly plate soft-sealed butterfly valve, including a valve body. A support cylinder is fixedly connected to the top of the valve body. A speed reduction device is communicated with the top of the support cylinder. A rotating disc is arranged on the back of the speed reduction device. A shaft sleeve is fixedly connected to the bottom of the valve body. Valve rods are arranged inside both the shaft sleeve and the speed reduction device. An S-shaped butterfly plate is vertically arranged inside the valve body. One end of the valve rod close to the valve body penetrates into the valve body and is fixedly connected to the surface of the S-shaped butterfly plate. Arc-shaped grooves are respectively opened on the front side and the rear side of the inner wall of the valve body. Sealing strips are fixedly installed on the front end of the left side and the rear end of the right side of the S-shaped butterfly plate through pressing plates and bolts. A rubber sleeve is fixedly connected inside the arc-shaped groove. The sealing strip is slidably connected inside the rubber sleeve.

[0008] Preferably, a sealing mechanism is arranged on the surface of the valve rod. The sealing mechanism includes a support cylinder, a support groove, and a sealing sleeve. The support cylinder is fixedly connected to the surface of the valve rod. One side of the support cylinder close to the S-shaped butterfly plate is fixedly connected to the surface of the S-shaped butterfly plate. The support groove is opened on the top and the bottom of the inner wall of the valve body. The sealing sleeve is fixedly connected to the surface of the support cylinder. The support cylinder is slidably connected inside the support groove through the sealing sleeve.

[0009] Preferably, a positioning mechanism is provided on the back surface of the rotating disc. The positioning mechanism includes a fixing plate, a gear ring, and a gear sleeve. The fixing plate is arranged on the back surface of the rotating disc. The gear sleeve is fixedly connected to the back surface of the speed reduction device. The gear ring is arranged on the front side of the rotating disc. The gear ring meshes inside the gear sleeve. The front surface of the fixing plate passes through the rotating disc through a connecting rod and is fixedly connected to the surface of the gear ring.

[0010] Preferably, a magic fastener one is fixedly connected to the front surface of the fixing plate, and a magic fastener two is fixedly connected to the back surface of the rotating disc. The magic fastener one and the magic fastener two are meshed.

[0011] Preferably, a pull ring is fixedly connected to the back surface of the fixing plate, and the inner wall of the rubber sleeve is arc-shaped.

[0012] Preferably, a protection mechanism is provided at the bottom of the inner wall of the valve body. The protection mechanism includes a sedimentation tank, a wear-resistant sleeve, and an inclined plate. The sedimentation tanks are opened on both sides of the bottom of the inner wall of the valve body. The wear-resistant sleeve is fixedly connected to the top of the sealing sleeve. The inclined plates are fixedly connected to both sides of the inner cavity of the valve body.

[0013] Preferably, the inner wall of the sedimentation tank is trapezoidal in shape, and the surface of the inclined plate is diamond-shaped.

[0014] Preferably, both ends of the sealing strip are fixedly connected to the surface of the sealing sleeve, and the support cylinder is made of stainless steel material.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides an S-shaped spherical butterfly plate soft-sealing butterfly valve, which has the following beneficial effects:

[0017] 1. For this S-shaped spherical butterfly plate soft-sealing butterfly valve, the S-shaped butterfly plate quickly guides the water to flow through the arc, and then the arc groove seals the gap between the valve body and the S-shaped butterfly plate through the sealing strip and the rubber sleeve. Finally, the sealing mechanism seals the top and bottom of the S-shaped butterfly plate. Thus, it has the advantage of being convenient for diversion and sealing, solving the problems that the raft of the existing soft-sealing butterfly valve is disc-shaped, which is easy to block the water flow during the opening process, has a slow diversion speed, and is easy to cause a large degree of extrusion deformation of the sealing ring, and improving the practicability of the soft-sealing butterfly valve to a certain extent.

[0018] 2. For this S-shaped spherical butterfly plate soft-sealing butterfly valve, the support cylinder is fixedly connected to the surface of the valve stem, and the side of the support cylinder close to the S-shaped butterfly plate is fixedly connected to the surface of the S-shaped butterfly plate. By setting the support cylinder, the contact area between the valve stem and the S-shaped butterfly plate can be increased, avoiding the phenomenon of damage at the connection between the valve stem and the S-shaped butterfly plate.

[0019] 3. The S-shaped spherical plate butterfly soft-sealed butterfly valve can fix the position of the rotating disk by setting a gear ring and a gear sleeve. Compared with the existing butterfly valves without a certain positioning structure, this positioning mechanism can limit the rotating disk when it is not in use, avoiding the phenomenon that the rotating disk is prone to rotate back due to collision or vibration.

[0020] 4. For the S-shaped spherical plate butterfly soft-sealed butterfly valve, a magic fastener one is fixedly connected to the front surface of the fixing plate, and a magic fastener two is fixedly connected to the back surface of the rotating disk. The magic fastener one and the magic fastener two are engaged. By setting the magic fastener one and the magic fastener two, the fixing plate can be limited, improving the fixing effect of the gear ring and the gear sleeve.

[0021] 5. For the S-shaped spherical plate butterfly soft-sealed butterfly valve, a pull ring is fixedly connected to the back surface of the fixing plate. By setting the pull ring, it is convenient for the user to pull the fixing plate, avoiding the phenomenon that the user cannot effectively pull the fixing plate.

[0022] 6. For the S-shaped spherical plate butterfly soft-sealed butterfly valve, inclined plates are fixedly connected to both sides of the inner cavity of the valve body. By setting the inclined plates, the water flow can be guided, avoiding the phenomenon that the water flow cannot effectively wash the sedimentation tank. Compared with the existing butterfly valves without a certain protection structure, the protection mechanism can prevent impurities in the water from accumulating on the top of the sealing sleeve, which is prone to wear during rotation, improving the service life of the sealing sleeve.

[0023] 7. For the S-shaped spherical plate butterfly soft-sealed butterfly valve, by setting the shape of the surface of the inclined plate to be diamond-shaped, the phenomenon that the inclined plate is prone to cause a large blockage to the water flow can be avoided, improving the practicability and flow guiding effect of the inclined plate.

[0024] 8. For the S-shaped spherical plate butterfly soft-sealed butterfly valve, by making the support cylinder made of stainless steel material, the service life of the support cylinder can be improved, avoiding the phenomenon that the support cylinder rusts after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Figure 2 is a partial top view of the structure of the present invention;

[0027] Figure 3 is a left view schematic diagram of the S-shaped butterfly plate of the structure of the present invention;

[0028] Figure 4 is a right view sectional view of the valve body of the structure of the present invention;

[0029] Figure 5 is a right view sectional view of the rotating disk of the structure of the present invention;

[0030] Figure 6 of the present inventionFigure 1 The enlarged structural diagram at position A;

[0031] Figure 7 This is the three-dimensional sectional view of the structural seal sleeve of the present invention;

[0032] Figure 8 This is the three-dimensional schematic diagram of the structural fixing plate of the present invention.

[0033] In the figure: 1 valve body, 2 support cylinder, 3 reduction device, 4 rotating disk, 5 bushing, 6 valve stem, 7 S-shaped butterfly plate, 8 arc groove, 9 sealing strip, 10 rubber sleeve, 11 sealing mechanism, 111 support cylinder, 112 support groove, 113 seal sleeve, 12 positioning mechanism, 121 fixing plate, 122 gear ring, 123 gear sleeve, 13 magic buckle one, 14 magic buckle two, 15 pull ring, 16 protection mechanism, 161 sedimentation tank, 162 wear-resistant sleeve, 163 inclined plate. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figure 1-7 , a soft-sealed butterfly valve with an S-shaped spherical butterfly plate, including a valve body 1, a support cylinder 2 is fixedly connected to the top of the valve body 1, a reduction device 3 is communicated with the top of the support cylinder 2, a rotating disk 4 is arranged on the back of the reduction device 3, a bushing 5 is fixedly connected to the bottom of the valve body 1, valve stems 6 are arranged inside both the bushing 5 and the reduction device 3, an S-shaped butterfly plate 7 is vertically arranged inside the valve body 1, one end of the valve stem 6 close to the valve body 1 penetrates into the valve body 1 and is fixedly connected to the surface of the S-shaped butterfly plate 7, arc grooves 8 are opened on the front and rear sides of the inner wall of the valve body 1, sealing strips 9 are fixedly installed at the front end on the left side and the rear end on the right side of the S-shaped butterfly plate 7 through pressing plates and bolts, a rubber sleeve 10 is fixedly connected inside the arc groove 8, a sealing mechanism 11 is arranged on the surface of the valve stem 6, the sealing mechanism 11 includes a support cylinder 111, a support groove 112 and a seal sleeve 113, the support cylinder 111 is fixedly connected to the surface of the valve stem 6, one side of the support cylinder 111 close to the S-shaped butterfly plate 7 is fixedly connected to the surface of the S-shaped butterfly plate 7, the support groove 112 is opened on the top and bottom of the inner wall of the valve body 1, the seal sleeve 113 is fixedly connected to the surface of the support cylinder 111, and the support cylinder 111 is slidably connected inside the support groove 112 through the seal sleeve 113, as Figure 5, by setting the support cylinder 111, the contact area between the valve stem 6 and the S-shaped butterfly plate 7 can be increased, avoiding damage at the connection between the valve stem 6 and the S-shaped butterfly plate 7. A positioning mechanism 12 is provided on the back surface of the rotating disc 4. The positioning mechanism 12 includes a fixing plate 121, a gear ring 122 and a gear sleeve 123. The fixing plate 121 is arranged on the back surface of the rotating disc 4. The gear sleeve 123 is fixedly connected to the back surface of the reduction device 3. The gear ring 122 is arranged on the front side of the rotating disc 4. The gear ring 122 meshes inside the gear sleeve 123. The front surface of the fixing plate 121 passes through the rotating disc 4 through a connecting rod and is fixedly connected to the surface of the gear ring 122, as Figure 4 , by setting the gear ring 122 and the gear sleeve 123, the position of the rotating disc 4 can be fixed. Compared with the existing butterfly valve without a certain positioning structure, the positioning mechanism 12 can limit the rotating disc 4 when it is not in use, avoiding the phenomenon that the rotating disc 4 is prone to rotate back due to collision or vibration. A magic fastener one 13 is fixedly connected to the front surface of the fixing plate 121. A magic fastener two 14 is fixedly connected to the back surface of the rotating disc 4. The magic fastener one 13 and the magic fastener two 14 are meshed, as Figure 4 , by setting the magic fastener one 13 and the magic fastener two 14, the fixing plate 121 can be limited, improving the fixing effect of the gear ring 122 and the gear sleeve 123. A pull ring 15 is fixedly connected to the back surface of the fixing plate 121. The inner wall shape of the rubber sleeve 10 is arc-shaped, as Figure 4 , by setting the pull ring 15, it is convenient for the user to pull the fixing plate 121, avoiding the phenomenon that the user cannot effectively pull the fixing plate 121. A protection mechanism 16 is arranged at the bottom of the inner wall of the valve body 1. The protection mechanism 16 includes a sedimentation tank 161, a wear-resistant sleeve 162 and an inclined plate 163. The sedimentation tanks 161 are opened on both sides of the bottom of the inner wall of the valve body 1. The wear-resistant sleeve 162 is fixedly connected to the top of the sealing sleeve 113. The inclined plates 163 are fixedly connected to both sides of the inner cavity of the valve body 1, as Figure 1 , by setting the inclined plates 163, the water flow can be guided, avoiding the phenomenon that the water flow cannot effectively wash the sedimentation tank 161. Compared with the existing butterfly valve without a certain protection structure, the protection mechanism 16 can prevent impurities in the water from accumulating on the top of the sealing sleeve 113, which is prone to wear during rotation, and improves the service life of the sealing sleeve 113. The inner wall shape of the sedimentation tank 161 is trapezoidal, and the surface shape of the inclined plate 163 is rhombic, as Figure 1 , by setting the surface shape of the inclined plate 163 as rhombic, the phenomenon that the inclined plate 163 is prone to cause a large blockage to the water flow can be avoided, improving the practicability and diversion effect of the inclined plate 163. Both ends of the sealing strip 9 are fixedly connected to the surface of the sealing sleeve 113. The support cylinder 111 is made of stainless steel material, as Figure 5, by making the support cylinder 111 made of stainless steel material, the service life of the support cylinder 111 can be improved, and the phenomenon of rusting of the support cylinder 111 after long-term use is avoided. The sealing strip 9 is slidably connected inside the rubber sleeve 10.

[0036] During use, the user first pulls the pull ring 15 backward. The pull ring 15 drives the fixed plate 121 to move backward. The fixed plate 121 drives the gear ring 122 to disengage from the gear sleeve 123. Then, the rotating disk 4 is rotated. The rotating disk 4 drives the valve stem 6 to rotate through the speed reduction device 3. The valve stem 6 drives the S-shaped butterfly plate 7 to rotate, so that the S-shaped butterfly plate 7 drives the sealing strip 9 to disengage from the rubber sleeve 10. At this time, the water flow will flow rapidly through the guidance of the S-shaped butterfly plate 7. When it is necessary to close, first rotate the rotating disk 4 in the reverse direction. The rotating disk 4 drives the S-shaped butterfly plate 7 to rotate through the speed reduction device 3 and the valve stem 6, so that the S-shaped butterfly plate 7 drives the sealing strip 9 to be pressed tightly inside the rubber sleeve 10 to seal the valve body 1. Then, push the pull ring 15 forward. The pull ring 15 drives the gear ring 122 to engage inside the gear sleeve 123 through the fixed plate 121 to fix the position of the rotating disk 4, so as to achieve the advantages of convenient flow guiding and sealing.

[0037] In summary, for this S-shaped spherical butterfly plate type soft-sealing butterfly valve, the S-shaped butterfly plate 7 quickly guides the water flow through the arc, and then the arc groove 8 seals the gap between the valve body 1 and the S-shaped butterfly plate 7 through the sealing strip 9 and the rubber sleeve 10. Finally, the sealing mechanism 11 seals the top and bottom of the S-shaped butterfly plate 7, thus having the advantages of convenient flow guiding and sealing, and solving the problems that the raft of the existing soft-sealing butterfly valve is disk-shaped, which is easy to block the water flow during the opening process, the flow guiding speed is slow, and at the same time, it is easy to cause a large degree of extrusion deformation of the sealing ring, and to a certain extent, improving the practicability of the soft-sealing butterfly valve.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An S-shaped spherical butterfly plate soft-sealed butterfly valve, comprising a valve body (1), Characterized in that: A support cylinder (2) is fixedly connected to the top of the valve body (1), a speed reduction device (3) is communicated with the top of the support cylinder (2), a rotating disc (4) is arranged on the back of the speed reduction device (3), a shaft sleeve (5) is fixedly connected to the bottom of the valve body (1), a valve stem (6) is arranged inside both the shaft sleeve (5) and the speed reduction device (3), an S-shaped butterfly plate (7) is vertically arranged inside the valve body (1), one end of the valve stem (6) close to the valve body (1) penetrates into the inside of the valve body (1) and is fixedly connected to the surface of the S-shaped butterfly plate (7), arc-shaped grooves (8) are respectively opened on the front side and the back side of the inner wall of the valve body (1), sealing strips (9) are fixedly installed on the front end of the left side and the back end of the right side of the S-shaped butterfly plate (7) through pressing plates and bolts, a rubber sleeve (10) is fixedly connected inside the arc-shaped groove (8), the sealing strip (9) is slidably connected inside the rubber sleeve (10), a sealing mechanism (11) is arranged on the surface of the valve stem (6), the sealing mechanism (11) includes a support cylinder (111), a support groove (112) and a sealing sleeve (113), the support cylinder (111) is fixedly connected to the surface of the valve stem (6), one side of the support cylinder (111) close to the S-shaped butterfly plate (7) is fixedly connected to the surface of the S-shaped butterfly plate (7), the support groove (112) is opened on the top and the bottom of the inner wall of the valve body (1), the sealing sleeve (113) is fixedly connected to the surface of the support cylinder (111), and the support cylinder (111) is slidably connected inside the support groove (112) through the sealing sleeve (113), a positioning mechanism (12) is arranged on the back of the rotating disc (4), the positioning mechanism (12) includes a fixing plate (121), a gear ring (122) and a gear sleeve (123), the fixing plate (121) is arranged on the back of the rotating disc (4), the gear sleeve (123) is fixedly connected to the back of the speed reduction device (3), the gear ring (122) is arranged on the front side of the rotating disc (4), the gear ring (122) is engaged inside the gear sleeve (123), the front surface of the fixing plate (121) penetrates through the rotating disc (4) through a connecting rod and is fixedly connected to the surface of the gear ring (122), a magic buckle one (13) is fixedly connected to the front surface of the fixing plate (121), a magic buckle two (14) is fixedly connected to the back of the rotating disc (4), the magic buckle one (13) and the magic buckle two (14) are engaged, a pull ring (15) is fixedly connected to the back of the fixing plate (121), the inner wall shape of the rubber sleeve (10) is arc-shaped, a protection mechanism (16) is arranged on the bottom of the inner wall of the valve body (1), the protection mechanism (16) includes a sedimentation tank (161), a wear-resistant sleeve (162) and an inclined plate (163), the sedimentation tank (161) is opened on both sides of the bottom of the inner wall of the valve body (1), the wear-resistant sleeve (162) is fixedly connected to the top of the sealing sleeve (113), and the inclined plate (163) is fixedly connected to both sides of the inner cavity of the valve body (1).

2. A type S spherical butterfly plate soft-sealing butterfly valve according to claim 1, characterized in that: the inner wall of the sedimentation tank (161) is trapezoidal in shape, and the surface of the inclined plate (163) is diamond-shaped.

3. A type S spherical butterfly plate soft-sealing butterfly valve according to claim 1, characterized in that: both ends of the sealing strip (9) are fixedly connected to the surface of the sealing sleeve (113), and the support cylinder (111) is made of stainless steel material.

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