Ball valve sealing assembly and ball valve

Abstract

The invention relates to the field of ball valves, in particular to a ball valve sealing assembly and a ball valve.The ball valve sealing assembly comprises a rotating frame, two limiting grooves are formed in the rotating frame, sliding blocks are slidably connected into the two limiting grooves, a plurality of supporting rods are fixedly connected to the sliding blocks, a supporting ring is fixedly connected to one ends of the supporting rods, and a sealing cover is fixedly connected to the supporting ring; an elastic block is fixedly connected to the sealing cover, a plurality of flexible sealing pieces are arranged on the elastic block, a sliding rod is fixedly connected to the lower end of the lifting rod, the sliding rod is slidably connected to the rotating frame, the sliding rod is sleeved with a spring, the spring is located between the lifting rod and the rotating frame, and two supporting rods are rotatably connected to the lifting rod; one ends of the two supporting rods are rotationally connected with the two sliding blocks correspondingly, the sealing assembly can conduct multi-layer sealing on a circulation opening of the valve, and the sealing performance of the ball valve is further improved.

Description

Technical Field

[0001] This invention relates to the field of ball valves, and more particularly to a ball valve sealing assembly and a ball valve. Background Technology

[0002] A ball valve is a valve in which the opening and closing element is driven by a valve stem and rotates around the ball valve axis. It can be used for fluid regulation and control. Ball valves are classified into pneumatic ball valves, electric ball valves, and manual ball valves according to their driving method. Ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceutical industry, water conservancy, power, municipal engineering, and steel. Conventional ball valves achieve a sealing effect by rotating the valve core to make frictional contact between the valve core and the inner wall of the valve body. However, after a period of use, the wear caused by friction between the metals can lead to poor sealing performance, so leakage is likely to occur when the water pressure increases. Summary of the Invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a ball valve sealing assembly and a ball valve. The sealing assembly of the present invention can perform multi-layer sealing on the flow port of the valve, thereby further improving the sealing performance of the ball valve.

[0004] A ball valve sealing assembly includes a rotating frame with two limiting grooves. A slider is slidably connected in each limiting groove. Multiple support rods are fixedly connected to the sliders. A support ring is fixedly connected to one end of each support rod. A sealing cover is fixedly connected to the support ring. An elastic block is fixedly connected to the sealing cover. Multiple flexible sealing sheets are provided on the elastic block.

[0005] A ball valve sealing assembly further includes a lifting rod, with a slide rod fixedly connected to the lower end of the lifting rod. The slide rod is slidably connected to a rotating frame, and a spring is sleeved on the slide rod. The spring is located between the lifting rod and the rotating frame. Two support rods are rotatably connected to the lifting rod, and one end of each support rod is rotatably connected to two sliders.

[0006] Both elastic blocks and multiple sealing plates are made of rubber.

[0007] The ball valve includes a housing and two connecting pipes. The housing is internally connected to the two connecting pipes, which are located on the left and right sides of the housing, respectively. The rotating frame is rotatably connected inside the housing. The diameters of the sealing cover and the flexible sealing sheet are both larger than the diameters of the connecting pipes, while the diameter of the elastic block is smaller than the diameter of the connecting pipes.

[0008] A rotating block is rotatably connected to the housing, and a lifting rod is slidably connected to the rotating block.

[0009] A rack is fixedly connected to the upper end of the lifting rod, a fixed frame is fixedly connected to the rotating block, and a sector gear is rotatably connected to the fixed frame, the sector gear meshing with the lifting rod.

[0010] A handle is fixedly connected to the sector gear. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0012] Figure 1 and Figure 2 This is a schematic diagram of the overall structure of a ball valve;

[0013] Figure 3 This is a cross-sectional view of the ball valve.

[0014] Figure 4-5 This is a schematic diagram of the sealing assembly.

[0015] Figure 6 This is a schematic diagram of the arc-shaped inclined block;

[0016] Figure 7 This is a schematic diagram of the structure of a sector gear;

[0017] Figure 8 This is a schematic diagram of the support rod structure;

[0018] Figure 9 This is a schematic diagram of the rotating frame.

[0019] Figure 10 This is a schematic diagram of the flexible sealing sheet. Detailed Implementation

[0020] The present invention will be described in detail with reference to the accompanying drawings in the embodiments of the present invention.

[0021] Referring to 8-10, a schematic diagram is shown of an embodiment of the present invention capable of providing multi-layer sealing of the valve's flow port. Further,

[0022] A ball valve sealing assembly includes a rotating frame 501 with two limiting grooves 502. A slider 305 is slidably connected in each limiting groove 502. Multiple support rods 405 are fixedly connected to the sliders 305 by bolts. A support ring 402 is fixedly connected to one end of the multiple support rods 405 by bolts. A sealing cover 401 is fixedly connected to the support ring 402 by bolts. An elastic block 403 is bonded and fixedly connected to the sealing cover 401. Multiple flexible sealing sheets 404 are provided on the elastic block 403, and the multiple flexible sealing sheets 404 are integrally formed with the elastic block 403.

[0023] When using the sealing assembly, align the two elastic blocks 403 with the flow port on the valve, and then control the two sliders 305 to slide away from each other in the two limiting grooves 502. The sliders 305 drive the elastic blocks 403 to insert into the flow port on the valve. The elastic blocks 403 drive multiple flexible sealing sheets 404 to insert into the flow port on the valve. The multiple flexible sealing sheets 404 play a multi-layer sealing role, while the sealing cover 401 is located outside the flow port and blocks the flow port to achieve a further leak-proof function. Under the pushing force of multiple support rods 405, the support ring 402 makes the edge of the sealing cover 401 stick tightly to the inner wall of the valve, which increases the resistance to water pressure and prevents leakage when the water pressure is too high. This state is the closed state of the valve.

[0024] When the valve needs to be opened, the operator controls the two sliders 305 to slide closer to each other, thereby causing the two elastic blocks 403 to disengage from the flow port. At the same time, the sealing cover 401 disengages from the inner wall of the valve. Then, the operator controls the rotating frame 501 to rotate a quarter circle, so that the elastic blocks 403 completely disengage from the flow port, thus avoiding resistance to the water flow.

[0025] Compared to conventional ball valve cores, this sealing assembly has an anti-friction effect, preventing poor sealing caused by prolonged metal rotation and friction, thus extending the valve's service life. It can also provide multi-layer sealing for the valve's flow port, preventing leakage when the water pressure is too high.

[0026] See Figure 9 The diagram shows an embodiment of synchronously controlling the sliding of two sliders 305 according to the present invention. Further,

[0027] The sealing assembly also includes a lifting rod 301. The lower end of the lifting rod 301 is fixedly connected to a slide rod 303 by bolts. The slide rod 303 is slidably connected to the rotating frame 501. A spring 304 is sleeved on the slide rod 303. The spring 304 is located between the lifting rod 301 and the rotating frame 501. Two support rods 302 are rotatably connected to the lifting rod 301 by bearings. One end of the two support rods 302 is rotatably connected to two sliders 305 respectively.

[0028] When the valve needs to be closed, the operator controls the lifting rod 301 to move downwards. The lifting rod 301 drives the sliding rod 303 to slide downwards on the rotating frame 501. The spring 304 is compressed by the force. At the same time, the lifting rod 301 drives the two support rods 302 to push the two sliders 305 to slide apart, thereby realizing the function of closing the valve. Through the cooperation of the lifting rod 301 and the two support rods 302, the function of synchronously controlling the sliding of the two sliders 305 is realized, ensuring that the two elastic blocks 403 are inserted into the two flow ports at the same time, achieving the effect of instantaneously cutting off the water flow.

[0029] See Figure 10The diagram shows an embodiment in which the elastic block 403 and the sealing sheet 404 according to the present invention have the characteristics of elastic deformation. Further,

[0030] The two elastic blocks 403 and the multiple sealing plates 404 are all made of rubber.

[0031] The rubber elastic block 403 and sealing plate 404 have elastic deformation properties, which can achieve better sealing effect. In addition, the rubber material has rust-proof and corrosion-proof properties, which can extend the service life of the valve.

[0032] See Figure 1-3 A schematic diagram of an embodiment of the present invention that enables water circulation is shown. Further,

[0033] The ball valve includes a housing 101 and two connecting pipes 102. The housing 101 is internally connected to the two connecting pipes 102. The two connecting pipes 102 are located on the left and right sides of the housing 101, respectively. The rotating frame 501 is rotatably connected to the housing 101 through a bearing. The diameters of the sealing cover 401 and the flexible sealing sheet 404 are both larger than the diameter of the connecting pipes 102, and the diameter of the elastic block 403 is smaller than the diameter of the connecting pipes 102.

[0034] By connecting the two connecting pipes 102 on the housing 101 to water pipes respectively, water flows into the housing 101 through one of the connecting pipes 102 and then flows out through the other connecting pipe 102, thus realizing the water circulation function. Since the diameters of the sealing cover 401 and the flexible sealing sheet 404 are both larger than the diameter of the connecting pipe 102, and the diameter of the elastic block 403 is smaller than the diameter of the connecting pipe 102, the sealing cover 401 can block the connecting pipe 102, preventing water from entering the housing 101 or flowing out of the housing 101. The flexible sealing sheet 404 can undergo elastic deformation after the elastic block 403 is inserted into the connecting pipe 102, thereby further improving the sealing effect.

[0035] See Figure 3 A schematic diagram of an embodiment of the invention that facilitates the rotation and sliding of the lifting rod 301 is shown. Further,

[0036] A rotating block 201 is rotatably connected to the housing 101 via a bearing, and a lifting rod 301 is slidably connected to the rotating block 201.

[0037] Rotating the rotating block 201 can drive the lifting rod 301 to rotate, which in turn drives the rotating frame 501 to rotate, thus realizing the function of the elastic block 403 disengaging from the connecting pipe 102. By controlling the lifting rod 301 to slide on the rotating block 201, the function of inserting the elastic block 403 into the connecting pipe 102 can be realized.

[0038] See Figure 6-7A schematic diagram of an embodiment of the present invention, which enables control of the lifting rod 301, is shown. Further,

[0039] A rack 203 is fixedly connected to the upper end of the lifting rod 301 by bolts. A fixed frame 202 is fixedly connected to the rotating block 201 by bolts. A sector gear 204 is rotatably connected to the fixed frame 202 by bearings. The sector gear 204 meshes with the lifting rod 301.

[0040] When the valve needs to be closed, the operator controls the sector gear 204 to rotate downwards, which in turn drives the rack 203 to move downwards. The rack 203 then drives the lifting rod 301 to move downwards, causing the two elastic blocks 403 to be inserted into the two connecting pipes 102 respectively, thus achieving a sealing effect.

[0041] See Figure 7 A schematic diagram of an embodiment of the sector gear 204 according to the present invention, which facilitates manual operation, is shown. Further,

[0042] A handle 205 is welded and fixedly connected to the sector gear 204.

[0043] The operator can control the sector gear 204 by operating the handle 205 by hand. When the valve needs to be closed, the handle 205 is lifted upwards, the lifting rod 301 moves downwards, and the handle 205 is rotated at the same time, so that the fixed frame 202 drives the rotating block 201 to rotate a quarter circle, thereby making it easier to bring the elastic block 403 close to the connecting pipe 102.

[0044] See Figure 4-7 The diagram shows an embodiment of the present invention in which the sealing cover 401 tightly covers the connecting pipe 102. Further,

[0045] The lower end of the handle 205 has a sliding groove 206, and an arc-shaped inclined block 103 is fixedly connected to the housing 101 by bolts. The arc-shaped inclined block 103 is located in the sliding groove 206.

[0046] The operator lifts handle 205 upwards and then rotates it, causing the groove 206 at the lower end of handle 205 to engage with the arc-shaped inclined block 103. This allows handle 205 to move upwards along the inclined surface of the arc-shaped inclined block 103. As handle 205 rotates, the upward rotation angle of the end of handle 205 gradually increases, and the downward movement distance of lifting rod 301 increases. This facilitates the sealing cover 401 to tightly cover the connecting pipe 102. Throughout the entire process, the operator only needs to rotate handle 205 horizontally, achieving a labor-saving function.

[0047] See Figure 6 This illustrates an embodiment of the invention in which the handle 205 is locked, providing an anti-accidental touch function. Further,

[0048] The upper end of the arc-shaped inclined block 103 is provided with a slot 104. When the handle 205 is rotated to the uppermost end of the arc-shaped inclined block 103, the handle 205 is locked into the slot 104 under the elastic action of the spring 304. The slide groove 206 cooperates with the slot 104 to achieve the function of locking the handle 205. Even if the handle 205 is touched by external force, it will not be dislodged from the slot 104, thereby avoiding the phenomenon of accidentally touching the handle 205 during use and avoiding dangerous accidents.

[0049] When the valve needs to be reopened, simply lift the handle 205 slightly to disengage it from the slot 104, and then rotate it in the opposite direction until it disengages from the arc-shaped inclined block 103. The handle 205 will automatically reset under the elastic action of the spring 304, causing the two connecting pipes 102 to open instantly.

[0050] See Figure 1-2 This illustrates an embodiment of connecting pipe 102 to other pipes according to the present invention, further...

[0051] Both connecting pipes 102 are provided with mounting holes, and the connecting pipes 102 can be connected to other pipes by inserting bolts into the mounting holes.

Claims

1. A ball valve sealing assembly, characterized in that: The device includes a rotating frame (501), which has two limiting grooves (502). A slider (305) is slidably connected in each of the two limiting grooves (502). Multiple support rods (405) are fixedly connected to the sliders (305). A support ring (402) is fixedly connected to one end of each support rod (405). A sealing cover (401) is fixedly connected to the support ring (402). An elastic block (403) is fixedly connected to the sealing cover (401). Multiple flexible sealing sheets (404) are provided on the elastic block (403).

2. The ball valve sealing assembly according to claim 1, characterized in that: It also includes a lifting rod (301), the lower end of which is fixedly connected to a slide rod (303), which is slidably connected to the rotating frame (501). A spring (304) is sleeved on the slide rod (303), which is located between the lifting rod (301) and the rotating frame (501). Two support rods (302) are rotatably connected to the lifting rod (301), and one end of each support rod (302) is rotatably connected to two sliders (305).

3. A ball valve sealing assembly according to claim 1, characterized in that: Both elastic blocks (403) and multiple sealing plates (404) are made of rubber.

4. A ball valve using a ball valve sealing assembly as described in claim 2, characterized in that: The ball valve includes a housing (101) and two connecting pipes (102). The housing (101) is internally connected to the two connecting pipes (102). The two connecting pipes (102) are located on the left and right sides of the housing (101) respectively. The rotating frame (501) is rotatably connected inside the housing (101). The diameters of the sealing cover (401) and the flexible sealing sheet (404) are both larger than the diameter of the connecting pipes (102), and the diameter of the elastic block (403) is smaller than the diameter of the connecting pipes (102).

5. A ball valve sealing assembly according to claim 4, characterized in that: A rotating block (201) is rotatably connected to the housing (101), and a lifting rod (301) is slidably connected to the rotating block (201).

6. A ball valve sealing assembly according to claim 5, characterized in that: A rack (203) is fixedly connected to the upper end of the lifting rod (301), a fixed frame (202) is fixedly connected to the rotating block (201), and a sector gear (204) is rotatably connected to the fixed frame (202), which meshes with the lifting rod (301).

7. A ball valve sealing assembly according to claim 6, characterized in that: A handle (205) is fixedly connected to the sector gear (204).

8. A ball valve sealing assembly according to claim 7, characterized in that: The handle (205) has a groove (206) at its lower end, and an arc-shaped inclined block (103) is fixedly connected to the housing (101), with the arc-shaped inclined block (103) located in the groove (206).

9. A ball valve sealing assembly according to claim 8, characterized in that: The upper end of the arc-shaped inclined block (103) is provided with a slot (104).

10. A ball valve sealing assembly according to claim 4, characterized in that: Both of the connecting pipes (102) are provided with mounting holes.

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