Fireproof anti-static high-sealing self-control flange ball valve

Abstract

The utility model provides a fireproof anti-static high-sealing self-control flanged ball valve, belongs to the field of ball valves, and aims to solve the problems that static electricity is generated due to different friction of materials of a ball core and a valve seat and leakage is easy to occur due to non-metal sealing. A valve seat is fixedly connected to the right side wall of the valve body through a bolt; a valve rod is rotatably connected to the top of the valve body and in a limiting seat; a connecting rod is inserted into the top of the valve rod; a metal ball is slidably connected to the middle of the bottom of the connecting rod and in the left side wall; according to the fireproof anti-static high-sealing self-control flanged ball valve, the L-shaped conductive groove is formed in the valve rod, and under the cooperation of the linkage sliding rod and the supporting spring, the two metal balls make contact with the ball core and the limiting base correspondingly, it is guaranteed that the limiting base, the valve rod and the ball core make contact, and a conductive loop is formed; static electricity generated by friction between the ball core and the non-metal material and between the valve rod and the non-metal material is removed, and therefore potential safety hazards caused by the static electricity are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a fireproof and anti-static high-sealing automatic-control flange ball valve. Background Art

[0002] Ball valves have the advantages of small fluid resistance, compact structure, reliable sealing, easy operation and simple maintenance, and are therefore widely used in petroleum, chemical industry, power generation, aviation and water heating, etc., especially the manual ball valves currently directly connected to pipelines. Their structure is mainly composed of a valve body, a valve cover, a valve seat, a ball valve core, a valve stem and a handle. The ball core and the valve seat of the existing high-seal automatic flange ball valve will generate static electricity during friction due to the different materials, which may cause pipeline explosion accidents. In addition, the valve seat is directly installed between the valve body and the ball core, and cannot effectively form a metal hard seal. There will be a little internal leakage, especially in gas pipelines. If there is a problem with the sealing performance, the medium will leak out, causing environmental pollution, fire and other serious consequences. Utility Model Content

[0003] The purpose of the utility model is to provide a fireproof and anti-static high-sealing automatic flange ball valve to solve the problem raised in the above background technology that the ball core and the valve seat of the existing high-sealing automatic flange ball valve will generate static electricity during friction due to the different materials, which may cause pipeline explosion accidents, and the valve seat is directly installed between the valve body and the ball core, and cannot effectively form a metal hard seal, and there will be a small amount of internal leakage. If there is a problem with the sealing performance, the medium will leak out, causing environmental pollution, causing fire and other serious consequences.

[0004] The purpose and effect of the fireproof and anti-static high-sealing automatic flange ball valve of the utility model are achieved by the following specific technical means:

[0005] A fireproof and anti-static high-sealing self-controlled flange ball valve, wherein the fireproof and anti-static high-sealing self-controlled flange ball valve includes a valve body; a ball core is rotatably connected to the right side wall of the valve body, and a spherical sealing seat is slidably connected to the left and right sides of the ball core, a valve seat is fixedly connected to the right side wall of the valve body by bolts, a limit seat is fixedly installed on the top of the valve body, a protective cover is fixedly installed on the top of the valve body outside the limit seat, a valve stem is rotatably connected to the top of the valve body and the limit seat, a connecting rod is inserted on the top of the valve stem, and a metal ball is slidably connected to the bottom middle of the connecting rod and the left side wall.

[0006] Furthermore, an annular concave groove is opened in the right side wall of the valve body, a carbon fiber pad is installed in the concave groove, and an annular connecting base is provided on the left side wall of the valve seat. The positions of the connecting base and the concave groove correspond to each other, and the right side of the carbon fiber pad is in contact with the connecting base.

[0007] Furthermore, a connecting seat is provided on the top of the valve body, a limiting seat is fixedly connected to the middle of the top of the connecting seat, a protective cover is fixedly installed on the connecting seat outside the limiting seat, and the protective cover and the limiting seat together constitute a structure for protecting the valve stem.

[0008] Furthermore, the spherical sealing seat and the sealing gasket cooperate to form a sealing structure connecting the left and right sides of the ball core and the valve body and the valve seat. Two spherical sealing seats are symmetrically arranged, and sealing gaskets are sleeved on the opposite side walls of the two spherical sealing seats. The sealing gasket connected to the left side wall of the left spherical sealing seat is fitted with the inner wall of the valve body, and the sealing gasket on the right side wall of the right spherical sealing seat is fitted with the inner wall of the valve seat through a stainless steel spring sheet.

[0009] Furthermore, the bottom of the valve stem is inserted into the top groove of the ball core in an arc shape, and an "L"-shaped conductive groove is opened inside the valve stem. Metal balls are slidably connected to the bottom end and the top of the left end of the conductive groove, and a linkage slide rod is slidably connected to the corner of the conductive groove. An inner groove surface is opened at the top of the left side wall of the linkage slide rod, and support springs are provided between the inner groove surface and the metal ball and between the bottom of the linkage slide rod and the metal ball.

[0010] Furthermore, a shaft sleeve is sleeved on the outer side wall of the valve stem, the shaft sleeve is nested in the upper end surface of the connecting seat at the top of the valve body, the top of the shaft sleeve is fixed to the bottom of the limit seat, the top of the valve stem is plugged with a connecting rod, and the top of the connecting rod is nested with a protective pad.

[0011] The utility model provides a fireproof and anti-static high-sealing self-controlled flange ball valve, which has the following beneficial effects:

[0012] 1. By opening an "L"-shaped conductive groove in the valve stem, and with the cooperation of the linkage slide rod and the support spring, the two metal balls are respectively in contact with the ball core and the limit seat to ensure that the limit seat, valve stem and ball core are in contact, forming a conductive circuit, and removing the static electricity generated by the friction between the ball core and the valve stem and the non-metallic material, thereby avoiding safety hazards caused by static electricity.

[0013] 2. By installing the carbon fiber pad in the concave groove of the valve body and contacting the connecting card platform of the valve seat, the fire prevention effect is greatly improved while the connection sealing is improved, which plays a key role in extending the service life of the ball valve. By arranging a sealing structure consisting of a spherical sealing seat and a sealing gasket on the left and right sides of the ball core, and with the cooperation of the stainless steel spring sheet, the sealing effect between the valve body, the valve seat and the ball core is better while the installation convenience is improved. The spherical sealing seat, the sealing gasket and the stainless steel spring sheet are all made of stainless steel, and the hard sealing state is maintained by the sealing surface between the metals, which can better improve the high temperature resistance and leakage prevention effect of the ball valve, thereby achieving a fire prevention effect. Since the sealing surfaces between the ball core, the valve body and the valve seat are made of high-quality stainless steel materials, these materials usually have good low-temperature properties and can resist the influence of ultra-low temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the shaft side structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cutaway structure of the valve body and valve seat of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall split structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the cutaway structure of the valve body of the utility model;

[0018] Figure 5 This is a schematic diagram of the split structure of the valve body and valve seat of the utility model;

[0019] Figure 6 This is a schematic diagram of the cross-section structure of the valve stem of the utility model.

[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0021] 1. Valve body; 101. Inner concave slot; 102. Connecting seat; 2. Valve seat; 201. Connecting card platform; 3. Limiting seat; 4. Protective cover; 5. Ball core; 6. Carbon fiber pad; 7. Spherical sealing seat; 8. Sealing pad; 9. Stainless steel spring sheet; 10. Valve stem; 1001. Conductive slot; 11. Bushing; 12. Connecting rod; 13. Protective pad; 14. Support spring; 15. Linkage slide rod; 1501. Inner concave groove surface; 16. Metal ball. DETAILED DESCRIPTION

[0022] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0023] Embodiment 1:

[0024] As attached Figure 1 To Attachment Figure 6 As shown:

[0025] The utility model provides a fireproof and anti-static high-sealing self-controlled flange ball valve, comprising: a valve body 1; a ball core 5 is rotatably connected in the right side wall of the valve body 1, a spherical sealing seat 7 is slidably connected to the left and right sides of the ball core 5, a valve seat 2 is fixedly connected to the right side wall of the valve body 1 by bolts, a limit seat 3 is fixedly installed on the top of the valve body 1, a protective cover 4 is fixedly installed on the top of the valve body 1 outside the limit seat 3, a valve stem 10 is rotatably connected in the top of the valve body 1 and the limit seat 3, a connecting rod 12 is inserted in the top of the valve stem 10, and a valve is slidably connected in the middle of the bottom of the connecting rod 12 and in the left side wall. A metal ball 16 is provided with an annular concave groove 101 on the right side wall of the valve body 1, a carbon fiber pad 6 is installed in the concave groove 101, and an annular connecting base 201 is provided on the left side wall of the valve seat 2. The positions of the connecting base 201 and the concave groove 101 correspond to each other, and the right side of the carbon fiber pad 6 is fitted with the connecting base 201. The specific function is that the carbon fiber pad 6 is installed in the concave groove 101 of the valve body 1 and is in contact with the connecting base 201 of the valve seat 2, which greatly improves the fire prevention effect while improving the connection sealing, and plays a key role in extending the service life of the ball valve.

[0026] Among them, a connecting seat 102 is provided on the top of the valve body 1, and a limited seat 3 is fixedly connected to the middle of the top of the connecting seat 102. A protective cover 4 is fixedly installed on the connecting seat 102 outside the limited seat 3. The protective cover 4 and the limited seat 3 together constitute a structure for protecting the valve stem 10. The bottom of the valve stem 10 is inserted into the top groove of the ball core 5 in an arc shape. An "L"-shaped conductive groove 1001 is opened inside the valve stem 10. A metal ball 16 is slidably connected to the bottom end and the top of the left end of the conductive groove 1001. A linkage slide rod 15 is slidably connected to the corner of the conductive groove 1001. The left side wall of the linkage slide rod 15 An inner groove surface 1501 is opened at the top, and a support spring 14 is provided between the inner groove surface 1501 and the metal ball 16, and between the bottom of the linkage slide rod 15 and the metal ball 16. The specific function is to open an "L"-shaped conductive groove 1001 in the valve stem 10, and with the cooperation of the linkage slide rod 15 and the support spring 14, the two metal balls 16 are respectively in contact with the ball core 5 and the limit seat 3, ensuring that the limit seat 3, the valve stem 10 and the ball core 5 are in contact, forming a conductive circuit, and removing the static electricity generated by the friction between the ball core 5 and the valve stem 10 and the non-metallic material, thereby avoiding the safety hazard caused by static electricity.

[0027] Among them, the spherical sealing seat 7 and the sealing gasket 8 cooperate to form a sealing structure connecting the left and right sides of the ball core 5 and the valve body 1 and the valve seat 2. There are two spherical sealing seats 7 symmetrically, and the sealing gaskets 8 are sleeved on the opposite side walls of the two spherical sealing seats 7. The sealing gasket 8 connected to the left side wall of the left spherical sealing seat 7 fits the inner wall of the valve body 1, and the sealing gasket 8 on the right side wall of the right spherical sealing seat 7 fits the inner wall of the valve seat 2 through the stainless steel spring sheet 9. The specific function is to provide a sealing structure composed of the spherical sealing seat 7 and the sealing gasket 8 on the left and right sides of the ball core 5, and with the cooperation of the stainless steel spring sheet 9, the sealing effect between the valve body 1 and the valve seat 2 and the ball core 5 is better while the installation convenience is improved. The spherical sealing seat 7, the sealing gasket 8 and the stainless steel spring sheet 9 are all made of stainless steel, and the hard sealing state is maintained by the sealing surface between the metals, which can better improve the high temperature resistance and leakage prevention effect of the ball valve, thereby achieving a fire prevention effect.

[0028] Among them, a shaft sleeve 11 is sleeved on the outer wall of the valve stem 10, and the shaft sleeve 11 is nested in the upper end surface of the connecting seat 102 at the top of the valve body 1, and the top of the shaft sleeve 11 is fixed to the bottom of the limit seat 3, and a connecting rod 12 is inserted at the top of the valve stem 10, and a protective pad 13 is nested at the top of the connecting rod 12. The specific function is to improve the sealing of the connection between the connecting seat 102 and the limit seat 3 through the shaft sleeve 11 sleeved by the valve stem 10, and with the cooperation of the connecting rod 12 and the protective pad 13, the valve stem 10 is extended so as to better rotate the valve stem 10, thereby controlling the opening and closing of the ball core 5.

[0029] The specific usage and function of this embodiment are as follows:

[0030] When using the fireproof and antistatic high-sealing self-controlled flange ball valve, firstly, the carbon fiber pad 6 is installed in the concave groove 101 of the valve body 1 to contact the connection card platform 201 of the valve seat 2, which greatly improves the fireproof effect while improving the connection sealing. By opening an "L"-shaped conductive groove 1001 in the valve stem 10, and with the cooperation of the linkage slide rod 15 and the support spring 14, the two metal balls 16 are respectively in contact with the ball core 5 and the limit seat 3, ensuring that the limit seat 3, the valve stem 10 and the ball core 5 are in contact, forming a conductive circuit, connecting the ball core 5 and the valve stem 10. The static electricity generated by the friction between the rod 10 and the non-metallic material is removed. By arranging a sealing structure consisting of a spherical sealing seat 7 and a sealing gasket 8 on the left and right sides of the ball core 5, and with the cooperation of the stainless steel spring sheet 9, the sealing effect between the valve body 1, the valve seat 2 and the ball core 5 is better while the installation convenience is improved. The spherical sealing seat 7, the sealing gasket 8 and the stainless steel spring sheet 9 are all made of stainless steel, and the hard sealing state is maintained by the sealing surface between the metals, which can better improve the high temperature resistance and leakage prevention effect of the ball valve, thereby achieving a fire prevention effect.

[0031] Embodiment 2:

[0032] By adopting a pneumatic switch, the valve stem 10 is rotated ninety degrees, and the ball valve can be fully opened or fully closed, which makes it easy to achieve rapid opening and closing and rapid response.

Claims

1. Fireproof and anti-static high-sealing automatic flange ball valve, characterized by: The invention comprises a valve body (1); a ball core (5) is rotatably connected in the right side wall of the valve body (1); a spherical sealing seat (7) is slidably connected to the left and right sides of the ball core (5); a valve seat (2) is fixedly connected to the right side wall of the valve body (1) by bolts; a limit seat (3) is fixedly installed on the top of the valve body (1); a protective cover (4) is fixedly installed on the top of the valve body (1) outside the limit seat (3); a valve stem (10) is rotatably connected to the top of the valve body (1) and the limit seat (3); a connecting rod (12) is inserted into the top of the valve stem (10); a metal ball (16) is slidably connected to the middle of the bottom of the connecting rod (12) and the left side wall.

2. The fireproof and antistatic high-sealing automatic flange ball valve according to claim 1 is characterized by: An annular concave groove (101) is provided in the right side wall of the valve body (1), a carbon fiber pad (6) is installed in the concave groove (101), and an annular connecting base (201) is provided on the left side wall of the valve seat (2), the connecting base (201) and the concave groove (101) are positioned correspondingly, and the right side of the carbon fiber pad (6) is in contact with the connecting base (201).

3. The fireproof and antistatic high-sealing automatic flange ball valve according to claim 1 is characterized by: A connecting seat (102) is provided on the top of the valve body (1), and a limit seat (3) is fixedly connected to the middle of the top of the connecting seat (102). A protective cover (4) is fixedly installed on the connecting seat (102) outside the limit seat (3), and the protective cover (4) and the limit seat (3) together constitute a structure for protecting the valve stem (10).

4. The fireproof and antistatic high-sealing automatic flange ball valve according to claim 1 is characterized by: The spherical sealing seat (7) and the sealing gasket (8) cooperate to form a sealing structure connecting the left and right sides of the ball core (5) and the valve body (1) and the valve seat (2). Two spherical sealing seats (7) are symmetrically provided, and sealing gaskets (8) are sleeved on opposite side walls of the two spherical sealing seats (7). The sealing gasket (8) connected to the left side wall of the left spherical sealing seat (7) is in contact with the inner wall of the valve body (1), and the sealing gasket (8) on the right side wall of the right spherical sealing seat (7) is in contact with the inner wall of the valve seat (2) through a stainless steel spring sheet (9).

5. The fireproof and antistatic high-sealing automatic flange ball valve according to claim 1 is characterized by: The bottom of the valve stem (10) is inserted into the top groove of the ball core (5) in an arc shape, and an "L"-shaped conductive groove (1001) is provided inside the valve stem (10). A metal ball (16) is slidably connected to the bottom end and the top of the left end of the conductive groove (1001), and a linkage slide bar (15) is slidably connected to the corner of the conductive groove (1001). An inner groove surface (1501) is provided at the top of the left side wall of the linkage slide bar (15), and a support spring (14) is provided between the inner groove surface (1501) and the metal ball (16) and between the bottom of the linkage slide bar (15) and the metal ball (16).

6. The fireproof and antistatic high-sealing automatic flange ball valve according to claim 1 is characterized by: A shaft sleeve (11) is sleeved on the outer wall of the valve stem (10), the shaft sleeve (11) is nested in the upper end surface of the connecting seat (102) at the top of the valve body (1), the top of the shaft sleeve (11) is fixed to the bottom of the limit seat (3), the top of the valve stem (10) is inserted with a connecting rod (12), and the top of the connecting rod (12) is nested with a protective pad (13).

Images