Anti-overpressure strong-sealing ball valve ball body

Abstract

The utility model discloses an anti-overpressure strong-sealing ball body of a ball valve. The anti-overpressure strong-sealing ball body comprises a ball body, a cavity, a through hole, a bolt, an I-shaped filling block, a first inner screw hole, a second inner screw hole, a concave area, a movable cavity, a sealing pressing block, a middle block, a sealing spring, an extrusion assembly and a locking assembly. The ball has the advantages that the sealing spring and the ball body are of a detachable structure, the sealing spring is easy to mount and dismount, follow-up replacement of the sealing spring is facilitated, and the resource utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a ball body of an anti-overpressure sealing ball valve. Background Art

[0002] The ball valve body is the main structural component of the ball valve. Its function is to accommodate the ball and provide an interface for connecting pipes. The ball valve is equipped with a ball, a valve seat, and a flow channel. The ball rotates to control the flow channel. The valve seat can contact the ball to achieve a seal on the flow channel.

[0003] The sealing surface between the valve seat and the ball body will wear out due to friction and erosion of the medium during long-term use, resulting in a gradual decrease in sealing performance. Therefore, in order to improve the sealing between the valve seat and the ball body, a sealing spring is required to compensate for the wear between the valve seat and the ball body based on the elastic force of the sealing spring. However, the sealing spring is prone to fatigue, aging or relaxation during actual use, causing its elastic modulus and elastic recovery ability to weaken, making it unable to compensate for the wear between the valve seat and the ball body. At this time, a new sealing spring needs to be replaced. For the sealing spring set in the ball body, the sealing spring is generally integrated into the ball during production, and the sealing spring cannot be replaced later. During maintenance, a new ball body is directly replaced, resulting in a serious waste of resources. Utility Model Content

[0004] The purpose of the utility model is to provide a ball body for an anti-overpressure sealing ball valve to solve the problems raised in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A ball valve body for sealing an overpressure-proof valve includes a ball body made of a pressure-resistant material; a cavity is defined in the center of the ball body; two through holes are defined in the ball body, located in the upper and lower halves thereof, respectively, and both through holes are transversely continuous; two I-shaped filler blocks are fixedly disposed in the ball body by bolts, and a first internal threaded hole and a second internal threaded hole are defined in the two I-shaped filler blocks and the ball body, respectively, for insertion of corresponding bolts;

[0007] Both sides of the two I-shaped filling blocks are provided with recessed areas, and the two I-shaped filling blocks respectively pass through corresponding through holes. The two recessed areas can cooperate with the corresponding through holes to form two movable chambers separated on both sides of the I-shaped filling blocks; a sealing pressure block, an intermediate block and a sealing spring are provided in each of the two movable chambers, and the sealing spring provides a force for the sealing pressure block to press against the valve seat on the corresponding side through the intermediate block;

[0008] The spherical body is provided with an extrusion assembly for driving the middle block to move inwards so as to squeeze the sealing spring and the middle block together into the recessed area;

[0009] The I-shaped filling block is provided with a locking component for locking the middle block squeezed into the recessed area.

[0010] A further configuration is that a rubber sealing pad is provided on the outside of the sealing pressure block, a spacer is formed between the rubber sealing pad and the inner wall of the through hole, an anti-slip filling block fixed to the spherical body is provided in the spacer, and the anti-slip filling block can be offset against the sealing pressure block to limit the position.

[0011] A further feature is that the sealing pressure block and the intermediate block are each provided with a notch on their sides facing each other, and cooperate to form an expansion cavity. The spherical body is provided with an internal passage connecting the expansion cavity with the second internal threaded hole. Gas can be injected into the expansion cavity through the first internal threaded hole, and the injected gas can drive the intermediate block inward. A further feature is that the intermediate block and the recessed area are respectively fixedly provided with a first lower extension and a second lower extension that support the sealing spring on their sides facing the cavity.

[0012] Further configuration is as follows: vertical locking holes are formed on both sides of the lower end of the I-shaped filler block, and the two locking holes are respectively connected to the corresponding recessed areas; the locking assembly includes a locking top block slidably arranged in the locking holes, and a locking inner groove is formed on the side of the middle block facing the cavity, and when the first lower extension section and the second lower extension section collide, the locking inner groove just corresponds to the position of the locking top block;

[0013] A connecting block is fixedly provided on the locking top block, and an annular cavity is provided between the connecting block and the inner wall of the locking hole. A locking spring connected to the locking top block is provided in the annular cavity, and a filling ring seat fixed to the I-shaped filling block is provided in the locking hole. The filling ring seat provides support force for the locking spring, and the interior of the filling ring seat is hollow for the connecting block to extend out.

[0014] A further configuration is that the locking top block has an oblique push-open top surface on one side facing the active chamber.

[0015] A further configuration is that a pulling block located in the cavity is fixedly provided on the connecting block.

[0016] The utility model has the following beneficial effects:

[0017] 1. In the utility model, the movable chamber is provided with a sealing pressure block, an intermediate block and a sealing spring. The sealing spring can push the sealing pressure block against the valve seat on the corresponding side, thereby realizing the sealing of the ball valve; the setting of the intermediate block can internally press the sealing spring, so that the intermediate block and the sealing spring can be squeezed together in the recessed area, which is convenient for the subsequent removal of the sealing spring; the extrusion component provides the intermediate block with the force of internal pressure on the sealing spring; the setting of the locking component can lock the intermediate block squeezed in the recessed area, so as to facilitate the removal of the I-type filling block and the sealing spring at the same time, providing convenience for the removal of the sealing spring.

[0018] 2. In the present invention, the rubber sealing gasket can improve the sealing performance with the valve seat; the anti-drop-out filling block can be arranged to counteract the sealing pressure block to prevent the entire sealing top block from falling out of the active chamber.

[0019] 3. In the present invention, gas can be injected into the expansion cavity through the first internal screw hole for fixation, without the need to open a new gas injection port, and the structure is simpler; and it is in line with usage habits, first remove the bolts to release the fixation of the I-shaped filling block and the spherical body, and then inject gas into the expansion cavity through the empty first internal screw hole; after the gas is injected into the expansion cavity, it can push the middle block inward, allowing the sealing spring to be pressed inside the middle block, so that the middle block and the sealing spring can be squeezed together in the recessed area.

[0020] 4. In the present invention, the arrangement of the first downward extension section and the second downward extension section can limit the sealing spring and prevent the sealing spring from being blocked by the locking top block during the inward movement.

[0021] 5. In the present invention, the locking top block can be extended into the locking inner groove under the push of the locking spring to achieve locking of the middle block; the first lower extension section and the second lower extension section can also play a positioning role. When the first lower extension section and the second lower extension section collide, the position of the locking top block corresponds to the position of the locking inner groove; the annular cavity is provided for the locking spring to be set, and the ring seat is filled in to provide support force for the locking spring.

[0022] 6. The setting of pushing away the top surface in the utility model can automatically push away the locking top block when the sealing pressing block is squeezed into the recessed area, thereby improving the moving smoothness of the sealing pressing block.

[0023] 7. The setting of the pulling block in the utility model facilitates pulling the connecting block so that the locking top block can be separated from the locking inner groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of an embodiment;

[0025] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0026] In the figure: 11, spherical body; 12, cavity; 13, through hole; 21, bolt; 22, I-shaped filling block; 23, recessed area; 31, first inner screw hole; 32, second inner screw hole; 41, movable chamber; 51, sealing pressure block; 52, intermediate block; 521, locking inner groove; 53, sealing spring; 54, rubber sealing gasket; 55, anti-slip filling block; 61, expansion inner cavity; 62, inner channel; 71, first lower extension section; 72, second lower extension section; 81, locking hole; 82, locking top block; 821, pushing open the top surface; 83, connecting block; 84, locking spring; 85, filling ring seat; 86, pulling block. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings.

[0028] As attached Figure 1 and 2 As shown;

[0029] This embodiment discloses a ball valve with an anti-overpressure sealing structure, comprising a ball body 11. The ball body 11 is made of a pressure-resistant material. In this embodiment, the ball body 11 is made of A105 carbon steel, which has excellent mechanical strength and pressure resistance, effectively preventing overpressure. A cavity 12 is defined in the center of the ball body 11. Two through holes 13 are defined within the ball body 11, located in the upper and lower halves thereof, respectively. Both through holes 13 are transversely extending through the ball body 11. Two I-shaped filler blocks 22 are fixedly mounted within the ball body 11 by bolts 21. A first internal threaded hole 31 and a second internal threaded hole 32 are defined within the two I-shaped filler blocks 22 and the ball body 11, respectively, for the corresponding bolts 21 to penetrate.

[0030] A recessed area 23 is defined on both sides of the two I-shaped filler blocks 22. The two I-shaped filler blocks 22 pass through corresponding through-holes 13, respectively. The two recessed areas 23 cooperate with the corresponding through-holes 13 to form two separate active chambers 41 on either side of the I-shaped filler blocks 22. A sealing pressure block 51, an intermediate block 52, and a sealing spring 53 are disposed in each of the two active chambers 41. The sealing spring 53 provides a force for the sealing pressure block 51 to press against the valve seat on the corresponding side through the intermediate block 52. An extrusion assembly is disposed within the spherical body 11 to drive the intermediate block 52 inwardly, thereby pressing the sealing spring 53 and the intermediate block 52 together into the recessed area 23.

[0031] The I-shaped filler block 22 houses a locking assembly that locks the intermediate block 52 squeezed into the recessed area 23. A rubber seal 54 is located on the outside of the sealing block 51. A spacer is formed between the rubber seal 54 and the inner wall of the through-hole 13. Within this spacer is a retaining block 55 secured to the spherical body 11. This retaining block 55 abuts against the sealing block 51 to limit its position.

[0032] Among them, the sealing pressure block 51 and the middle block 52 are provided with notches on the side facing each other, and cooperate to form an expansion inner cavity 61. An inner channel 62 is opened in the spherical body 11 to connect the expansion inner cavity 61 with the second inner screw hole 32. Gas can be injected into the expansion inner cavity 61 through the first inner screw hole 31, and the injected gas can drive the middle block 52 to move inward.

[0033] The middle block 52 and the recessed area 23 are respectively fixedly provided with a first downward extension section 71 and a second downward extension section 72 that can support the sealing spring 53 on one side facing the cavity 12 .

[0034] The two sides of the lower end of the I-shaped filler block 22 are provided with vertical locking holes 81, and the two locking holes 81 are respectively connected to the corresponding recessed areas 23; the locking assembly includes a locking top block 82 slidably arranged in the locking holes 81, and the side of the intermediate block 52 facing the cavity 12 is provided with a locking inner groove 521. When the first lower extension section 71 and the second lower extension section 72 collide, the locking inner groove 521 corresponds to the position of the locking top block 82;

[0035] A connecting block 83 is fixedly provided on the locking top block 82. There is an annular cavity between the connecting block 83 and the inner wall of the locking hole 81. A locking spring 84 connected to the locking top block 82 is provided in the annular cavity. A filling ring seat 85 fixed to the I-shaped filling block 22 is provided in the locking hole 81. The filling ring seat 85 provides support for the locking spring 84. The inside of the filling ring seat 85 is hollow for the connecting block 83 to extend out.

[0036] The locking top block 82 has an oblique push-opening top surface 821 on a side facing the active chamber 41 .

[0037] Among them, a pulling block 86 located in the cavity 12 is fixedly provided on the connecting block 83 .

[0038] The working principle of this embodiment is:

[0039] The installation process of the sealing spring 53 is as follows: when installing the sealing spring 53, the sealing spring 53 is pressed into the recessed area 23, and then the middle block 52 is pressed into the recessed area 23; in the process of the middle block 52 being pressed into the recessed area 23, it will contact the push-open top surface 821, and then the push-open locking top block 82 will continue to be pressed into the recessed area 23 until the first lower extension section 71 and the second lower extension section 72 collide, and the locking inner groove 521 just corresponds to the position of the locking top block 82; at this time, the locking top block 82 will extend into the locking inner groove 521 under the push of the locking spring 84 to achieve locking of the middle block 52. Next, install the I-shaped filling block 22 on the spherical body 11 and fix it with the bolt 21; then, apply force to pull the pulling block 86 to separate the locking top block 82 from the locking inner groove 521; at this time, the intermediate block 52 will move outward under the push of the sealing spring 53 and press on the sealing pressure block 51, and the sealing pressure block 51 will then press against the valve seat on the corresponding side to achieve sealing.

[0040] The process of removing the sealing spring 53 is as follows: unscrew the bolt 21, connect the external gas injection pipe to the first inner screw hole 31 to inject gas, and the gas will enter the expansion inner cavity 61 after passing through the first inner screw hole 31, the second inner screw hole 32 and the inner channel 62 in sequence. After the gas enters the expansion inner cavity 61, it can push the middle block 52 inward, so that the middle block 52 presses the sealing spring 53, so that the middle block 52 and the sealing spring 53 can be squeezed together into the recessed area 23; when the first lower extension section 71 and the second lower extension section 72 collide, the locking top block 82 will extend into the locking inner groove 521 under the push of the locking spring 84 to lock the middle block 52. Finally, directly apply force to pull out the I-shaped filling block 22, that is, the I-shaped filling block 22 and the sealing spring 53 can be removed together, which is very convenient.

[0041] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A ball body for an anti-overpressure sealing ball valve, characterized by: The invention comprises a spherical body (11), wherein the spherical body (11) is made of a pressure-resistant material; a cavity (12) is provided in the center of the spherical body (11); two through holes (13) are provided in the spherical body (11), which are respectively located in the upper half and the lower half thereof, and the two through holes (13) are both transversely through-shaped; two I-shaped filling blocks (22) are fixedly provided in the spherical body (11) by bolts (21), and a first internal screw hole (31) and a second internal screw hole (32) for corresponding bolts (21) to penetrate are respectively provided in the two I-shaped filling blocks (22) and the spherical body (11); Both sides of the two I-shaped filling blocks (22) are provided with recessed areas (23), and the two I-shaped filling blocks (22) respectively pass through the corresponding through holes (13). The two recessed areas (23) can cooperate with the corresponding through holes (13) to form two movable chambers (41) separated on both sides of the I-shaped filling blocks (22); a sealing pressure block (51), an intermediate block (52) and a sealing spring (53) are provided in the two movable chambers (41), and the sealing spring (53) provides a force for the sealing pressure block (51) to press against the valve seat on the corresponding side through the intermediate block (52); The spherical body (11) is provided with an extrusion assembly for driving the middle block (52) to move inwards so as to squeeze the sealing spring (53) and the middle block (52) together into the recessed area (23); The I-shaped filling block (22) is provided with a locking assembly for locking the middle block (52) squeezed into the recessed area (23).

2. The anti-overpressure sealing ball valve ball according to claim 1, characterized in that: The outer side of the sealing pressure block (51) is provided with a rubber sealing gasket (54), and a spacer is formed between the rubber sealing gasket (54) and the inner wall of the through hole (13). An anti-slip filling block (55) fixed to the spherical body (11) is provided in the spacer, and the anti-slip filling block (55) can be pressed against the sealing pressure block (51) to limit the position.

3. The anti-overpressure sealing ball valve ball according to claim 1, characterized in that: The sealing pressure block (51) and the intermediate block (52) are both provided with notches on one side facing each other, and cooperate to form an expansion inner cavity (61). The spherical body (11) is provided with an inner channel (62) that connects the expansion inner cavity (61) with the second inner screw hole (32). Gas can be injected into the expansion inner cavity (61) through the first inner screw hole (31), and the injected gas can drive the intermediate block (52) to move inward.

4. The anti-overpressure sealing ball valve ball according to claim 1, characterized in that: The middle block (52) and the recessed area (23) are respectively fixedly provided with a first downward extension section (71) and a second downward extension section (72) capable of supporting the sealing spring (53) on one side facing the cavity (12).

5. The ball body of the anti-overpressure sealing ball valve according to claim 4, characterized in that: Both sides of the lower end of the I-shaped filling block (22) are provided with vertical locking holes (81), and the two locking holes (81) are respectively connected to the corresponding recessed areas (23); the locking assembly includes a locking top block (82) slidably arranged in the locking hole (81), and the middle block (52) is provided with a locking inner groove (521) on the side facing the cavity (12); when the first lower extension section (71) and the second lower extension section (72) collide, the locking inner groove (521) corresponds to the position of the locking top block (82); A connecting block (83) is fixedly provided on the locking top block (82), and an annular cavity is provided between the connecting block (83) and the inner wall of the locking hole (81). A locking spring (84) connected to the locking top block (82) is provided in the annular cavity. A filling ring seat (85) fixed to the I-shaped filling block (22) is provided in the locking hole (81). The filling ring seat (85) provides support force for the locking spring (84). The interior of the filling ring seat (85) is hollow for the connecting block (83) to extend out.

6. The anti-overpressure sealing ball valve ball according to claim 5, characterized in that: The locking top block (82) has an oblique push-opening top surface (821) on the side facing the active chamber (41).

7. The ball body of the anti-overpressure sealing ball valve according to claim 5, characterized in that: A pulling block (86) located in the cavity (12) is fixedly arranged on the connecting block (83).

Images