Differential type two-way sealing eccentric half ball valve

Abstract

The utility model relates to the technical field of eccentric semi-ball valves, in particular to a differential type two-way sealing eccentric semi-ball valve which comprises a semi-ball valve body, connecting pieces and a differential type controller, the two connecting pieces are fixedly installed on the two sides of the semi-ball valve body, a sealing structure adjustable structure is arranged on one side of the interior of the semi-ball valve body, and the differential type controller is arranged on the other side of the interior of the semi-ball valve body. And the sealing structure adjustable structure comprises threaded rods, valve seats and sealing blocks, the two threaded rods are in threaded connection to the two sides of the connecting piece, and the inner sides of the two extrusion blocks are fixedly connected with the valve seats. According to the differential type two-way sealing eccentric half ball valve, threaded rods on the two sides are manually rotated to rotate, then the threaded rods push extrusion blocks at the ends to slide along the two sides of a connecting piece, and sealing rings can be attached to sealing blocks more tightly; the caliber of the sealing ring can be adjusted according to needs so that the sealing ring can be attached to the sealing block more tightly, and finally the sealing effect of the differential type two-way sealing eccentric half ball valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric semi-ball valves, in particular to a differential type bidirectional sealing eccentric semi-ball valve. Background Art

[0002] The eccentric semi-ball valve is a relatively new type of ball valve. Its unique structural advantages include frictionless opening and closing, low seal wear, and low opening and closing torque. This allows for smaller actuator sizes. Equipped with a multi-turn electric actuator, it enables both medium regulation and tight shutoff. It is widely used in applications requiring strict shutoff, such as the petroleum, chemical, and urban water supply and drainage industries.

[0003] For example, the authorization announcement number "CN210687065U" is named a two-way sealed eccentric semi-ball valve. Regardless of whether the medium flows in the forward or reverse direction, the movable valve seat can follow and move the deformed semi-ball in time under the pressure of the medium flow to compensate, so that the eccentric semi-ball valve is always in a better sealing state, avoiding the occurrence of poor sealing defects. However, the existing two-way sealed eccentric semi-ball valve adopts a structure fixed on the inner side of the ball valve to be close to the semi-ball to achieve sealed closure. However, when the structure is first put into use, a small amount of friction and wear will inevitably occur at the contact point between the sealing structure and the semi-ball valve, and the caliber of the sealing structure cannot be adjusted according to actual needs to better fit the shape and size of the semi-ball valve semi-ball. Therefore, as the use time increases, the sealing structure of the two-way sealed eccentric semi-ball valve will not fit tightly with the semi-ball, which in turn affects the closing and sealing effect of the two-way sealed eccentric semi-ball valve.

[0004] At the same time, the existing two-way sealed eccentric semi-ball valve uses a semi-spherical valve body to close the water flow position of the ball valve. However, the convex surface of the semi-ball valve is in close contact with the water pipe on one side, and the concave surface on the other side is directly opposite to the pipe on the other side. Once the medium is input into the pipe on the other side, the impact force and pressure generated will directly act on the groove on the rear side of the semi-ball valve. Because the semi-ball valve itself is designed as a curved structure, the center point of the concave arc surface is the weakest and has poor pressure bearing capacity. Therefore, multiple valve closing and opening will increase the pressure on the semi-ball valve, which ultimately affects the service life of the two-way sealed eccentric semi-ball valve. Utility Model Content

[0005] The utility model aims to solve the problems of poor sealing effect and reduced service life of a bidirectional sealing eccentric semi-ball valve, and proposes a differential bidirectional sealing eccentric semi-ball valve.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a differential bidirectional sealing eccentric hemispherical valve, comprising a hemispherical valve body, a connecting piece and a differential controller, wherein the two connecting pieces are fixedly mounted on both sides of the hemispherical valve body, and an inner side of the hemispherical valve body is provided with an adjustable sealing structure, wherein the adjustable sealing structure comprises a threaded rod, a valve seat and a closing block, the two threaded rods are threadedly connected to both sides of the connecting piece, the ends of the two threaded rods are rotatably connected to an extrusion block, the inner sides of the two extrusion blocks are fixedly connected to the valve seat, the inner sides of the two valve seats are movably connected to a sealing ring, the inner sides of the sealing ring are movably clamped with a closing block, the front end of the closing block is fixedly mounted with a sealing plate, and the two ends of the closing block are fixedly connected with a clamping block.

[0007] Preferably, one side of the two clamping blocks is movably connected to the outer wall of the sealing ring, and the inner side of the sealing ring is movably connected to both ends of the sealing plate.

[0008] Preferably, one end of the two connecting pieces is fixedly connected to a water inlet pipe, and the other end of the two connecting pieces is fixedly connected to a water outlet pipe, and the end of the water outlet pipe is arranged opposite to the sealing plate.

[0009] Preferably, a hemispherical valve reinforcement structure is provided on the inner side of the hemispherical valve body;

[0010] The hemispherical valve reinforcement structure includes a sealing bearing, a hemisphere and a connecting block;

[0011] The two sealing bearings are fixedly installed inside the upper and lower ends of the hemispherical valve body, the inner sides of the two sealing bearings are fixedly connected to the hemisphere, the outer wall of the hemisphere is fixedly connected to two connecting blocks, the inner sides of the two connecting blocks are fixedly connected to vertical rods, and one side of the two vertical rods is fixedly installed with multiple reinforcement supports, and the other ends of the multiple reinforcement supports are fixedly connected to the inner wall of the hemisphere.

[0012] Preferably, one side of the hemisphere is fixedly connected to the rear side of the closing block, and the rear side of the hemisphere is arranged opposite to the end of the water inlet pipe.

[0013] Preferably, a leak-proof pad is fixedly installed on the top of the hemispherical valve body, and an eccentric hemispherical valve driving structure is fixedly provided above the leak-proof pad;

[0014] The eccentric hemispherical valve driving structure includes a fixed seat, a support rod and a rotating rod;

[0015] The fixing seat is fixedly installed on the top of the leak-proof pad, and a tightening sleeve is fixedly installed on the top of the fixing seat. The top of the tightening sleeve is fixedly connected to the mounting seat, and two support rods are fixedly installed above the mounting seat. The rotating rod is rotatably connected to the inner side of the mounting seat, and the bottom end of the rotating rod is fixedly connected to the top of the hemisphere through a sealed bearing. A manual rotating wheel is fixedly installed above the rotating rod.

[0016] Preferably, a differential controller is fixedly mounted on the top ends of the two support rods, and the inner side of the differential controller is fixedly connected to the rotating rod.

[0017] The utility model proposes a differential two-way sealing eccentric hemispheric valve, which has the following beneficial effects: by manually rotating the threaded rods on both sides, the threaded rods will push the extrusion blocks at the end to slide along the two sides of the connecting piece, and when the extrusion blocks slide inward, they will push the valve seat to be squeezed and moved inward, so that the sealing ring can fit more tightly with the closing block, and the diameter of the sealing ring can be adjusted as needed to facilitate a closer fit with the closing block, thereby ultimately improving the sealing effect of the differential two-way sealing eccentric hemispheric valve.

[0018] The sealed bearing will drive the hemisphere to rotate left and right along the inside of the hemisphere valve body. When the hemisphere blocks the end of the outlet pipe with the end closing block, the vertical rod will improve the strength and impact resistance of the hemisphere groove surface through multiple oblique reinforcement supports. The vertical rod and multiple reinforcement supports are made of strong and durable metal stainless steel. After the hemisphere is closed, it is not easily damaged by the water pressure of the water inlet pipe, thereby improving the service life of the differential two-way sealing eccentric hemisphere valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0020] Figure 2 for Figure 1 A front cross-sectional schematic diagram of ;

[0021] Figure 3 for Figure 1 Schematic diagram of the top surface;

[0022] Figure 4 for Figure 2 Enlarged cross-sectional view of part A in the middle;

[0023] Figure 5 for Figure 2 Enlarged cross-sectional view of part B in the middle;

[0024] Figure 6 for Figure 2 Enlarged cross-sectional view of part C.

[0025] In the figure: 1. Hemispherical valve body, 2. Connecting piece, 3. Water inlet pipe, 4. Water outlet pipe, 5. Differential controller, 6. Adjustable sealing structure, 61. Threaded rod, 62. Extrusion block, 63. Valve seat, 64. Block, 65. Sealing ring, 66. Sealing plate, 67. Closing block, 7. Hemispherical valve reinforcement structure, 71. Sealing bearing, 72. Hemisphere, 73. Connecting block, 74. Vertical rod, 75. Reinforcement support, 8. Eccentric hemispherical valve drive structure, 81. Fixed seat, 82. Tightening sleeve, 83. Mounting seat, 84. Support rod, 85. Rotating rod, 86. Manual wheel, 9. Leak-proof pad. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] See also Figure 1-6 , a differential-type bidirectional sealing eccentric hemispherical valve, comprising a hemispherical valve body 1, a connecting piece 2 and a differential controller 5, the two connecting pieces 2 are fixedly mounted on both sides of the hemispherical valve body 1, and an adjustable sealing structure 6 is provided on one side of the interior of the hemispherical valve body 1, the adjustable sealing structure 6 comprises a threaded rod 61, a valve seat 63 and a closing block 67, the two threaded rods 61 are threadedly connected to both sides of the connecting piece 2, and the threaded rods 61 on both sides are rotated manually, and then the threaded rods 61 will push the extrusion blocks 62 at the ends to slide along both sides of the connecting piece 2, and when the extrusion blocks 62 slide inward, they will push the valve seat 63 to move inward, thereby pushing the diameter of the sealing ring 65 to shrink, and the sealing ring 65 can fit more tightly with the closing block 67, otherwise the threaded rod 61 drives the extrusion blocks 62 away from both sides of the valve seat 63, and the sealing ring 65 loses its tightness and the connection with the closing block 67 becomes looser;

[0028] The ends of the two threaded rods 61 are rotatably connected to the extrusion blocks 62, the inner sides of the two extrusion blocks 62 are fixedly connected to the valve seats 63, the inner sides of the two valve seats 63 are movably connected to the sealing rings 65, and the sealing rings 65 are made of a soft, easily deformable and elastic rubber material. The sealing rings 65 will press against the outer side of the closing block 67 to form a seal, and the inner side of the sealing ring 65 is movably connected to the closing block 67. The front end of the closing block 67 is fixedly installed with a sealing plate 66. The two ends of the closing block 67 are fixedly connected with the clamping blocks 64. When the hemisphere 72 is driven by the rotating rod 85 When it is rotated to the end of the water outlet pipe 4, the closing block 67 will enter the sealing ring 65 inside the valve seat 63, and then achieve a closed sealing effect, and the clamping blocks 64 on both sides will press against the outer wall of the sealing ring 65 to enhance the sealing performance. One side of the two clamping blocks 64 is movably connected to the outer wall of the sealing ring 65, and the inner side of the sealing ring 65 is movably connected to the two ends of the sealing plate 66. One end of the two connecting pieces 2 is fixedly connected to the water inlet pipe 3, and the other end of the two connecting pieces 2 is fixedly connected to the water outlet pipe 4. The end of the water outlet pipe 4 is arranged opposite to the sealing plate 66.

[0029] By manually rotating the threaded rods 61 on both sides, the threaded rods 61 will push the extrusion blocks 62 at the end to slide along both sides of the connecting piece 2. When the extrusion blocks 62 slide inward, they will push the valve seat 63 to move inward, thereby reducing the diameter of the sealing ring 65. The sealing ring 65 can fit more tightly with the closing block 67. On the contrary, the threaded rods 61 drive the extrusion blocks 62 away from both sides of the valve seat 63. The sealing ring 65 loses its tightness and the connection with the closing block 67 becomes loose. The sealing ring 65 is made of a soft and deformable material. Made of rubber material with good elasticity, the sealing ring 65 will press against the outer side of the closing block 67 to form a seal. When the hemisphere 72 is driven by the rotating rod 85 to rotate to the end of the water outlet pipe 4, the closing block 67 will enter the sealing ring 65 on the inner side of the valve seat 63, and then achieve a closed sealing effect. The clamping blocks 64 on both sides will press against the outer wall of the sealing ring 65 to enhance the sealing performance. The caliber size of the sealing ring can be adjusted as needed to facilitate a closer fit with the closing block 67, thereby ultimately improving the sealing effect of the differential two-way sealing eccentric hemispheric valve.

[0030] See also Figure 1-6 The inner side of the hemispherical valve body 1 is provided with a hemispherical valve reinforcement structure 7, which includes a sealed bearing 71, a hemispherical ball 72 and a connecting block 73. The two sealed bearings 71 are fixedly installed inside the upper and lower ends of the hemispherical valve body 1. The inner sides of the two sealed bearings 71 are fixedly connected with hemispherical balls 72. The sealed bearings 71 will drive the hemispherical ball 72 to rotate left and right along the inside of the hemispherical valve body 1. When the hemispherical ball 72 blocks the end of the water outlet pipe 3 with the end closing block 67, the vertical rod 74 will improve the strength and impact resistance of the groove surface of the hemispherical ball 72 through multiple oblique reinforcement supports 75. The vertical rod 74 and the multiple reinforcement supports 75 are made of strong and durable metal stainless steel material. After the hemisphere 72 is closed, it is not easily damaged by the pressure of the water pressure of the water inlet pipe 3. The outer wall of the hemisphere 72 is fixedly connected to two connecting blocks 73. The inner sides of the two connecting blocks 73 are fixedly connected to the vertical rod 74. One side of the two vertical rods 74 is fixedly installed with multiple reinforcement supports 75. The other ends of the multiple reinforcement supports 75 are fixedly connected to the inner wall of the hemisphere 72. One side of the hemisphere 72 is fixedly connected to the rear side of the closing block 67, and the rear side of the hemisphere 72 is arranged opposite to the end of the water inlet pipe 3.

[0031] The sealed bearing 71 will drive the hemisphere 72 to rotate left and right along the inside of the hemisphere valve body 1. When the hemisphere 72 blocks the end of the outlet pipe 3 with the end closing block 67, the vertical rod 74 will improve the strength and impact resistance of the groove surface of the hemisphere 72 through multiple oblique reinforcement supports 75. The vertical rod 74 and the multiple reinforcement supports 75 are all made of strong and durable metal stainless steel material. After the hemisphere 72 is closed, it is not easily damaged by the water pressure of the water inlet pipe 3, thereby improving the service life of the differential two-way sealed eccentric hemisphere valve.

[0032] See also Figure 1-6, a leak-proof pad 9 is fixedly installed on the top of the hemispherical valve body 1. The leak-proof pad 9 is made of natural rubber material and is fixed on the top of the hemispherical valve body 1 to reduce the occurrence of water leakage in the part that fits with the fixed seat 81. An eccentric hemispherical valve drive structure 8 is fixed above the leak-proof pad 9. The eccentric hemispherical valve drive structure 8 includes a fixed seat 81, a support rod 84 and a rotating rod 85. The fixed seat 81 is fixedly installed on the top of the leak-proof pad 9. A tightening sleeve 82 is fixedly installed on the top of the fixed seat 81. The tightening sleeve 82 is made of soft steel material and tightly wrapped around the outside of the fixed seat 81 to improve the firmness of the fixed seat 81. The top of the tightening sleeve 82 is fixedly connected to the mounting seat 83. Two support rods 84 are fixedly installed above the mounting seat 83. The support rod 84 is used to support the differential controller 5 fixed at the top. The movable rod 85 is rotatably connected to the inner side of the mounting seat 83. The bottom end of the rotating rod 85 is fixedly connected to the top of the hemisphere 72 through the sealed bearing 71. A manual rotary wheel 86 is fixedly installed above the rotating rod 85. The manual rotary wheel 86 can drive the hemisphere 72 inside the hemisphere valve body 1 to rotate through the lower rotating rod 85 to achieve the opening and closing of the bidirectional sealed eccentric hemisphere valve. The top of the two support rods 84 is fixedly installed with a differential controller 5. The differential controller 5 adopts a relatively mature existing technical field in the differential safety valve named "CN202209456U". The differential controller 5 monitors and protects the circuit status of the eccentric hemisphere valve through differential current. The inner side of the differential controller 5 is fixedly connected to the rotating rod 85.

[0033] Working principle:

[0034] When the differential bidirectional sealing eccentric hemispherical valve is working to control the pipeline medium transportation;

[0035] Differential bidirectional sealing eccentric hemispherical valve sealing structure with adjustable diameter:

[0036] By manually rotating the threaded rods 61 on both sides, the threaded rods 61 will push the extrusion blocks 62 at the ends to slide along both sides of the connecting piece 2. When the extrusion blocks 62 slide inward, they will push the valve seat 63 inward to squeeze and move, thereby reducing the diameter of the sealing ring 65. The sealing ring 65 can fit more tightly with the closing block 67. On the contrary, the threaded rods 61 drive the extrusion blocks 62 away from both sides of the valve seat 63, and the sealing ring 65 loses its tightness and the connection with the closing block 67 becomes loose.

[0037] At the same time, the sealing ring 65 is made of a soft, easily deformable and elastic rubber material. The sealing ring 65 will tightly abut against the outer side of the closing block 67 to form a seal. When the hemisphere 72 is driven by the rotating rod 85 to rotate to the end of the water outlet pipe 4, the closing block 67 will enter the sealing ring 65 inside the valve seat 63, thereby achieving a hermetic sealing effect, and the clamping blocks 64 on both sides will abut against the outer wall of the sealing ring 65 to enhance the sealing performance.

[0038] Differential bidirectional sealing eccentric hemispherical valve hemispherical rear side reinforcement structure;

[0039] The sealed bearing 71 drives the hemisphere 72 to rotate left and right along the interior of the hemisphere valve body 1. When the hemisphere 72 blocks the end of the outlet pipe 3 with the end closure block 67, the vertical rod 74, through multiple oblique reinforcement supports 75, will improve the strength and impact resistance of the groove surface of the hemisphere 72. The vertical rod 74 and the multiple reinforcement supports 75 are made of strong and durable metal stainless steel. After the hemisphere 72 is closed, it is not easily damaged by the pressure of the water inlet pipe 3.

[0040] Differential bidirectional sealing eccentric hemispherical valve differential control closing and opening structure:

[0041] First, the leak-proof pad 9 is made of natural rubber material and fixed on the top of the hemispherical valve body 1 to reduce the occurrence of water leakage in the part that fits with the fixed seat 81. The tightening sleeve 82 is made of soft steel material and tightly wrapped around the outside of the fixed seat 81 to improve the firmness of the fixed seat 81. The support rod 84 is used to support the differential controller 5 at the fixed top. The manual wheel 86 can drive the hemisphere 72 inside the hemispherical valve body 1 to rotate through the rotating rod 85 below to achieve the opening and closing of the two-way sealed eccentric hemispherical valve. The differential controller 5 is fixedly installed on the top of the two support rods 84. The differential controller 5 adopts the more mature existing technical field of a differential safety valve named "CN202209456U". The differential controller 5 monitors and protects the circuit status of the eccentric hemispherical valve through differential current.

[0042] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A differential bidirectional sealing eccentric hemispherical valve, comprising a hemispherical valve body (1), a connecting piece (2) and a differential controller (5), characterized in that: The two connecting pieces (2) are fixedly mounted on both sides of the hemispherical valve body (1); an adjustable sealing structure (6) is provided on one side of the interior of the hemispherical valve body (1); the adjustable sealing structure (6) comprises a threaded rod (61), a valve seat (63) and a closing block (67); the two threaded rods (61) are threadedly connected to both sides of the connecting piece (2); the ends of the two threaded rods (61) are rotatably connected to an extrusion block (62); the inner sides of the two extrusion blocks (62) are fixedly connected to the valve seat (63); the inner sides of the two valve seats (63) are movably connected to a sealing ring (65); the inner sides of the sealing ring (65) are movably connected to a closing block (67); a sealing plate (66) is fixedly mounted on the front end of the closing block (67); and clamping blocks (64) are fixedly connected to both ends of the closing block (67).

2. A differential bidirectional sealing eccentric hemispherical valve according to claim 1, characterized in that: One side of the two clamping blocks (64) is movably connected to the outer wall of the sealing ring (65), and the inner side of the sealing ring (65) is movably connected to both ends of the sealing plate (66).

3. A differential bidirectional sealing eccentric hemispherical valve according to claim 1, characterized in that: One end of the two connecting pieces (2) is fixedly connected to a water inlet pipe (3), and the other end of the two connecting pieces (2) is fixedly connected to a water outlet pipe (4), and the end of the water outlet pipe (4) is arranged opposite to the sealing plate (66).

4. A differential bidirectional sealing eccentric hemispherical valve according to claim 1, characterized in that: A semi-spherical valve reinforcement structure (7) is provided on the inner side of the semi-spherical valve body (1); The hemispherical valve reinforcement structure (7) comprises a sealing bearing (71), a hemispherical valve (72) and a connecting block (73); The two sealing bearings (71) are fixedly mounted inside the upper and lower ends of the hemispherical valve body (1); the inner sides of the two sealing bearings (71) are fixedly connected to a hemispherical (72); the outer wall of the hemispherical (72) is fixedly connected to two connecting blocks (73); the inner sides of the two connecting blocks (73) are fixedly connected to a vertical rod (74); a plurality of reinforcing struts (75) are fixedly mounted on one side of the two vertical rods (74); the other ends of the plurality of reinforcing struts (75) are fixedly connected to the inner wall of the hemispherical (72).

5. A differential bidirectional sealing eccentric hemispherical valve according to claim 4, characterized in that: One side of the hemisphere (72) is fixedly connected to the rear side of the closing block (67), and the rear side of the hemisphere (72) is arranged opposite to the end of the water inlet pipe (3).

6. A differential bidirectional sealing eccentric hemispherical valve according to claim 1, characterized in that: A leak-proof pad (9) is fixedly mounted on the top of the hemispherical valve body (1), and an eccentric hemispherical valve driving structure (8) is fixedly mounted above the leak-proof pad (9); The eccentric hemispherical valve driving structure (8) comprises a fixed seat (81), a support rod (84) and a rotating rod (85); The fixing seat (81) is fixedly mounted on the top of the leak-proof pad (9); a tightening sleeve (82) is fixedly mounted on the top of the fixing seat (81); a mounting seat (83) is fixedly connected to the top of the tightening sleeve (82); two support rods (84) are fixedly mounted above the mounting seat (83); the rotating rod (85) is rotatably connected to the inner side of the mounting seat (83); the bottom end of the rotating rod (85) is fixedly connected to the top of the hemisphere (72) through a sealing bearing (71); and a manual rotating wheel (86) is fixedly mounted above the rotating rod (85).

7. A differential bidirectional sealing eccentric hemispherical valve according to claim 6, characterized in that: A differential controller (5) is fixedly mounted on the top ends of the two support rods (84), and the inner side of the differential controller (5) is fixedly connected to the rotating rod (85).

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