Valve seat structure of double-seal ball valve

Abstract

The utility model belongs to the field of ball valves, particularly relates to a valve seat structure of a double-seal ball valve, and aims to solve the problems that an existing valve seat is poor in sealing performance, can only depend on attachment of the valve seat and a valve element, and is prone to leakage, and the valve seat structure of the double-seal ball valve comprises a main valve seat and an auxiliary valve seat. The auxiliary valve seat is arranged on one side of the main valve seat, the auxiliary valve seat and the main valve seat are integrally formed, a plurality of mounting holes are formed in the main valve seat, the mounting holes are annularly formed, and the first sealing assembly and the second sealing assembly are additionally arranged on the two sides of the main valve seat and the two sides of the auxiliary valve seat respectively. The sealing effect of the device can be greatly improved, when the device is impacted by water flow, the sealing plate can be pushed to the auxiliary valve seat, the sealing performance is improved, after the valve element of the ball valve rotates every time, the second sealing block can be closer to the valve element, the sealing performance can be improved, double sealing is achieved, and the sealing performance is better.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a double-sealed ball valve seat structure. Background Art

[0002] Ball valve, defined in the standard GB / T21465-2008 "Valve Terminology" as: a valve whose opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. Among them, the hard-sealed V-type ball valve has a strong shear force between its V-type ball core and the metal valve seat with hard alloy surfacing, which is particularly suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel to connect the other two channels. This type of valve should generally be installed horizontally in the pipeline.

[0003] The valve seat is a key component in the valve, and the sealing performance of the valve seat directly affects the working reliability and life of the valve. Therefore, it is necessary to select a valve seat material with good sealing performance and ensure that it is installed and debugged correctly. However, the existing valve seat has poor sealing performance and can only rely on the fit between the valve seat and the valve core, which is prone to leakage. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art that the valve seat has poor sealing performance and can only rely on the fit between the valve seat and the valve core, which is prone to leakage, and proposes a double-sealed ball valve seat structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A double-sealed ball valve seat structure, comprising a main valve seat and an auxiliary valve seat, wherein the auxiliary valve seat is arranged on one side of the main valve seat and is integrally formed with the main valve seat, and a plurality of mounting holes are opened inside the main valve seat, wherein the plurality of mounting holes are arranged in an annular shape;

[0007] A first sealing component, which is arranged on one side of the auxiliary valve seat and is used to improve the sealing performance of the device, and includes a sealing plate, which is in contact with a side of the auxiliary valve seat away from the main valve seat, and a first sealing block is fixedly connected to one side of the sealing plate, and the first sealing block is in contact with the auxiliary valve seat;

[0008] The second sealing component is arranged on one side of the main valve seat and is used to improve the sealing performance of the device. The second sealing component includes a second sealing block. An annular groove is opened on one side of the main valve seat, and the annular groove is used in conjunction with the second sealing block.

[0009] In a possible design, the first sealing assembly also includes a plurality of first mounting blocks fixedly connected to one side of the sealing plate, a plurality of first mounting grooves are opened on one side of the auxiliary valve seat, one end of the first mounting block slides and extends into the interior of the first mounting groove, and a first tension spring is fixedly connected between one end of the first mounting block and an inner wall of one side of the first mounting groove.

[0010] In a possible design, the second sealing assembly also includes a plurality of second mounting blocks fixedly connected to one side of the second sealing block, a plurality of second mounting grooves are provided on an inner wall of one side of the annular groove, one end of the second mounting block extends into the interior of the second mounting groove, and a second tension spring is fixedly connected between one end of the second mounting block and an inner wall of one side of the second mounting groove.

[0011] In a possible design, a second sealing ring is fixedly connected to one side of the second sealing block, and the second sealing ring is in contact with the valve core.

[0012] In a possible design, a third oblique groove is formed on one side of the main valve seat, and a fourth oblique groove is formed on one side of the second sealing block. Both the fourth oblique groove and the third oblique groove are used in conjunction with the valve core.

[0013] In a possible design, two second arc-shaped grooves are opened on one side of the third inclined groove, and two first arc-shaped grooves are opened on one side of the auxiliary valve seat. The two second arc-shaped grooves correspond to the two first arc-shaped grooves, and two first sealing rings are arranged between the two second arc-shaped grooves and the two first arc-shaped grooves.

[0014] In a possible design, a first oblique groove is formed on one side of the auxiliary valve seat, and a second oblique groove is formed on one side of the first sealing block. Both the first oblique groove and the second oblique groove are used in conjunction with the valve core.

[0015] In the present application, when in use, the auxiliary valve seat and the main valve seat are integrally arranged, the sealing plate and the first sealing block are installed on one side of the auxiliary valve seat, and the installation is completed by inserting a plurality of first installation blocks into the interior of the first installation groove. The arrangement of a plurality of first tension springs can ensure the stability of the installation of the sealing plate and the first sealing block, and a first sealing ring is arranged between the second arc groove and the first arc groove, thereby improving the sealing performance of the device. At this time, the sealing plate faces the direction of the incoming water, and when impacted by the water flow, the sealing plate will be pushed toward the auxiliary valve seat, thereby improving the sealing performance;

[0016] The second sealing block is installed on one side of the main valve seat, and multiple second mounting blocks are inserted into the interior of the second mounting groove. The sealing effect can be improved by the tension of the second tension spring. The annular groove cooperates with the second sealing block. The setting of the second sealing ring can improve the sealing performance of the device, and the fourth bevel groove, the third bevel groove, the first bevel groove and the second bevel groove can fit with the ball valve core, and after each rotation of the ball valve core, the second sealing block can be closer to the valve core, thereby improving the sealing performance.

[0017] Beneficial effects:

[0018] In the utility model, the double-sealed ball valve seat structure can achieve the effect of sealing the valve core through the first sealing component, and then when impacted by water flow, the sealing plate will be pushed toward the auxiliary valve seat to improve the sealing performance;

[0019] In the utility model, the double-sealed ball valve seat structure can further improve the sealing performance of the ball valve through the second sealing component. After each rotation of the ball valve core, the second sealing block can be closer to the valve core, thereby improving the sealing performance.

[0020] In the utility model, the first sealing component and the second sealing component are respectively installed on both sides of the main valve seat and the auxiliary valve seat, so that the sealing effect of the device can be greatly improved. When impacted by water flow, the sealing plate will be pushed toward the auxiliary valve seat to improve the sealing performance. After each rotation of the ball valve core, the second sealing block can be brought closer to the valve core, which can improve the sealing performance, double sealing, and better sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional structural schematic diagram of a double-sealed ball valve seat structure proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of a double-sealed ball valve seat structure proposed by the utility model;

[0023] Figure 3 It is a schematic diagram of the exploded structure of the auxiliary valve seat and the first sealing block in the double-sealed ball valve seat structure proposed by the utility model from a first perspective;

[0024] Figure 4 It is a schematic diagram of the exploded structure of the auxiliary valve seat and the first sealing block in the double-sealed ball valve seat structure proposed by the utility model from a second perspective;

[0025] Figure 5 This is a schematic diagram of the main structure of a main valve seat and a second sealing block in a double-sealed ball valve seat structure proposed by the utility model.

[0026] In the figure: 1. main valve seat; 2. mounting hole; 3. auxiliary valve seat; 4. sealing plate; 5. first inclined groove; 6. first tension spring; 7. first mounting block; 8. first sealing ring; 9. second inclined groove; 10. first sealing block; 11. first mounting groove; 12. first arcuate groove; 13. second arcuate groove; 14. third inclined groove; 15. annular groove; 16. second sealing block; 17. second tension spring; 18. second mounting block; 19. second mounting groove; 20. second sealing ring; 21. fourth inclined groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Example 1

[0029] Reference Figure 1-5 A double-sealed ball valve seat structure, which is used in the field of ball valves, comprises: a main valve seat 1 and an auxiliary valve seat 3, wherein the auxiliary valve seat 3 is arranged on one side of the main valve seat 1 and is integrally formed with the main valve seat 1, and a plurality of mounting holes 2 are opened inside the main valve seat 1, and the plurality of mounting holes 2 are arranged in an annular shape;

[0030] The first sealing component is arranged on one side of the auxiliary valve seat 3 and is used to improve the sealing performance of the device. The first sealing component includes a sealing plate 4, and the sealing plate 4 is fitted with the side of the auxiliary valve seat 3 away from the main valve seat 1. One side of the sealing plate 4 is fixedly connected with a first sealing block 10, and the first sealing block 10 is fitted with the auxiliary valve seat 3. The first sealing component also includes a plurality of first mounting blocks 7 fixedly connected to one side of the sealing plate 4. One side of the auxiliary valve seat 3 is provided with a plurality of first mounting grooves 11. One end of the first mounting block 7 slides and extends to the inside of the first mounting groove 11. The same first tension spring 6 is fixedly connected between one end of the first mounting block 7 and the inner wall of one side of the first mounting groove 11. One side of the auxiliary valve seat 3 is provided with A first inclined groove 5 and a second inclined groove 9 are provided on one side of the first sealing block 10. The first inclined groove 5 and the second inclined groove 9 are used in conjunction with the valve core. The auxiliary valve seat 3 and the main valve seat 1 are integrally arranged. The sealing plate 4 and the first sealing block 10 are installed on one side of the auxiliary valve seat 3. The installation is completed by inserting a plurality of first mounting blocks 7 into the interior of the first mounting groove 11. The arrangement of a plurality of first tension springs 6 can ensure the stability of the installation of the sealing plate 4 and the first sealing block 10, and a first sealing ring 8 is provided between the second arc groove 13 and the first arc groove 12, thereby improving the sealing performance of the device. At this time, the sealing plate 4 faces the direction of the incoming water. When impacted by the water flow, the sealing plate 4 will be pushed toward the auxiliary valve seat 3 to improve the sealing performance;

[0031] The second sealing component is arranged on one side of the main valve seat 1 and is used to improve the sealing performance of the device. The second sealing component includes a second sealing block 16. An annular groove 15 is provided on one side of the main valve seat 1. The annular groove 15 is used in conjunction with the second sealing block 16. The second sealing component also includes a plurality of second mounting blocks 18 fixedly connected to one side of the second sealing block 16. A plurality of second mounting grooves 19 are provided on the inner wall of one side of the annular groove 15. One end of the second mounting block 18 extends to the inside of the second mounting groove 19. A second tension spring 17 is fixedly connected between one end of the second mounting block 18 and the inner wall of one side of the second mounting groove 19. A second sealing ring 20 is fixedly connected to one side of the second sealing block 16. The second sealing ring 20 is connected to the valve core Fitting, a third bevel groove 14 is opened on one side of the main valve seat 1, and a fourth bevel groove 21 is opened on one side of the second sealing block 16. The fourth bevel groove 21 and the third bevel groove 14 are used in conjunction with the valve core. The second sealing block 16 is installed on one side of the main valve seat 1, and is inserted into the interior of the second mounting groove 19 through multiple second mounting blocks 18. The sealing effect can be improved by the tension of the second tension spring 17. The annular groove 15 cooperates with the second sealing block 16. The setting of the second sealing ring 20 can improve the sealing performance of the device, and the fourth bevel groove 21, the third bevel groove 14, the first bevel groove 5 and the second bevel groove 9 can fit with the ball valve core, and after each rotation of the ball valve core, the second sealing block 16 can be closer to the valve core, which can improve the sealing performance.

[0032] Example 2

[0033] refer to Figure 1-5 , improved on the basis of Example 1: two second arc grooves 13 are opened on one side of the third inclined groove 14, two first arc grooves 12 are opened on one side of the auxiliary valve seat 3, the two second arc grooves 13 correspond to the two first arc grooves 12, and two first sealing rings 8 are arranged between the two second arc grooves 13 and the two first arc grooves 12.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-seal ball valve seat structure, characterized in that: include: A main valve seat (1) and an auxiliary valve seat (3), wherein the auxiliary valve seat (3) is arranged on one side of the main valve seat (1) and is integrally formed with the main valve seat (1), and a plurality of mounting holes (2) are provided inside the main valve seat (1), and the plurality of mounting holes (2) are arranged in a ring shape; A first sealing component, the first sealing component is arranged on one side of the auxiliary valve seat (3) and is used to improve the sealing performance of the device, the first sealing component comprises a sealing plate (4), the sealing plate (4) is in contact with a side of the auxiliary valve seat (3) away from the main valve seat (1), a first sealing block (10) is fixedly connected to one side of the sealing plate (4), and the first sealing block (10) is in contact with the auxiliary valve seat (3); A second sealing component, the second sealing component is arranged on one side of the main valve seat (1) and is used to improve the sealing performance of the device, the second sealing component includes a second sealing block (16), an annular groove (15) is opened on one side of the main valve seat (1), and the annular groove (15) is used in conjunction with the second sealing block (16).

2. A double-seal ball valve seat structure according to claim 1, characterized in that: The first sealing assembly also includes a plurality of first mounting blocks (7) fixedly connected to one side of the sealing plate (4); a plurality of first mounting grooves (11) are provided on one side of the auxiliary valve seat (3); one end of the first mounting block (7) slides and extends into the interior of the first mounting groove (11); and a first tension spring (6) is fixedly connected between one end of the first mounting block (7) and an inner wall of one side of the first mounting groove (11).

3. A double-seal ball valve seat structure according to claim 1, characterized in that: The second sealing assembly also includes a plurality of second mounting blocks (18) fixedly connected to one side of the second sealing block (16); a plurality of second mounting grooves (19) are provided on an inner wall of one side of the annular groove (15); one end of the second mounting block (18) extends into the interior of the second mounting groove (19); and a second tension spring (17) is fixedly connected between one end of the second mounting block (18) and an inner wall of one side of the second mounting groove (19).

4. A double-seal ball valve seat structure according to claim 1, characterized in that: A second sealing ring (20) is fixedly connected to one side of the second sealing block (16), and the second sealing ring (20) is in contact with the valve core.

5. A double-seal ball valve seat structure according to claim 1, characterized in that: A third inclined groove (14) is provided on one side of the main valve seat (1), and a fourth inclined groove (21) is provided on one side of the second sealing block (16); the fourth inclined groove (21) and the third inclined groove (14) are both used in conjunction with the valve core.

6. A double-seal ball valve seat structure according to claim 5, characterized in that: Two second arc-shaped grooves (13) are provided on one side of the third inclined groove (14), and two first arc-shaped grooves (12) are provided on one side of the auxiliary valve seat (3). The two second arc-shaped grooves (13) correspond to the two first arc-shaped grooves (12), and two first sealing rings (8) are provided between the two second arc-shaped grooves (13) and the two first arc-shaped grooves (12).

7. A double-seal ball valve seat structure according to claim 1, characterized in that: A first inclined groove (5) is provided on one side of the auxiliary valve seat (3), and a second inclined groove (9) is provided on one side of the first sealing block (10). Both the first inclined groove (5) and the second inclined groove (9) are used in conjunction with the valve core.

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