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CN-224214738-U - Soft seal ball valve

CN224214738UCN 224214738 UCN224214738 UCN 224214738UCN-224214738-U

Abstract

The utility model provides a soft sealing ball valve, which relates to the technical field of ball valves and comprises a valve body and a ball body, wherein a drain valve is arranged in the middle of the bottom of the valve body, a valve cover is arranged at the lower end of the drain valve, a first stud is arranged at the bottom end of the valve cover and the lower end opening of the drain valve, a first hexagonal nut is arranged at the outer end of the first stud, the ball body is rotatably moved in the center of the valve cover, a valve rod is arranged in the middle of the upper part of the ball body, the middle part of the valve rod is sleeved in a front cover, the upper end of the front cover is fixed at the lower part of a connecting disc, and the connecting disc is arranged at the lower part of a turbine. The self-lubricating bearing and the stuffing box adopt two O-shaped sealing rings respectively, and the stuffing box is internally provided with the PTFE V-shaped stuffing, so that the reliability and feasibility of the sealing performance of the valve shaft are ensured, and meanwhile, the self-lubricating bearing adopts the PTFE valve seat and the valve rod with small friction coefficient and good self-lubricating property, thereby being convenient for flexibly operating the valve for a long time and being safer and more durable.

Inventors

  • CHEN LIYI

Assignees

  • 渤海阀门集团有限公司

Dates

Publication Date
20260508
Application Date
20250513

Claims (6)

  1. 1. A soft sealing ball valve is characterized by comprising a valve body (2) and a ball body (11), wherein a drain valve (21) is arranged in the middle of the bottom of the valve body (2), a valve cover (1) is arranged at the lower end of the drain valve (21), a first stud (3) is arranged at the lower end of the valve cover (1) and the lower port of the drain valve (21), a first hexagonal nut (4) is arranged at the outer end of the first stud (3), the ball body (11) is rotatably moved in the center of the valve cover (1), a valve rod (12) is arranged in the middle of the upper part of the ball body (11), the middle of the valve rod (12) is sleeved in a front cover (14), the upper end of the front cover (14) is fixed at the lower part of a connecting disc (19), and the connecting disc (19) is arranged at the lower part of a turbine (20).
  2. 2. A soft sealing ball valve according to claim 1, characterized in that a metal sheet (5) is arranged between the valve cover (1) and the valve body (2), the metal sheet (5) is of a detachable structure, and the valve body (2) is detachably connected with the valve cover (1).
  3. 3. A soft sealing ball valve according to claim 1, characterized in that the valve body (2) is provided with a valve seat support ring (9) in a sleeved manner, a valve seat (10) is arranged between the inner side surface of the valve seat support ring (9) and the outer side surface of the ball body (11), the outer side surface of the valve seat support ring (9) is provided with a spring (7), and the lower side surface of the valve seat support ring (9) is provided with an O-ring (8).
  4. 4. A soft sealing ball valve according to claim 1, characterized in that the centre of the ball (11) is provided with a through hole (22), the centre of the turbine (20), the front cover (14), the valve rod (12) and the ball (11) are all located on the same axis, and a sliding bearing (13) is arranged between the upper part of the ball (11) and the lower part of the front cover (14).
  5. 5. A soft sealing ball valve according to claim 1, characterized in that a packing (16) is mounted between the valve stem (12), the front cover (14) and the connecting disc (19), an inner hexagonal screw (15) is mounted between the upper part of the front cover (14) and the upper part of the valve body (2), a second double-headed screw (17) is mounted between the connecting disc (19) and the turbine (20), and a second hexagonal nut (18) is mounted at the lower part of the second stud (17).
  6. 6. A soft sealing ball valve according to claim 1, characterized in that the middle part of the valve cover (1) is provided with a lower supporting rod (6), the upper part of the lower supporting rod (6) extends into the center of the lower part in the valve body (2), and the lower part of the sphere (11) is rotatably connected with the upper part of the lower supporting rod (6).

Description

Soft seal ball valve Technical Field The utility model relates to the technical field of ball valves, in particular to a soft sealing ball valve. Background The ball valve is a stop valve in the field of hydropower stations, and is a valve which uses a ball body with a circular through hole as an opening and closing piece, and the ball body rotates along with a valve rod so as to realize opening and closing actions. The ball valve is a valve which uses a ball body with a circular through hole as an opening and closing piece, and the ball body rotates along with a valve rod so as to realize the opening or closing of the valve. In the specification of an antistatic soft sealing ball valve in the prior art (bulletin No. CN 220850828U), mention is made of the fact that a fixed ring is welded on one side of a valve body, a mounting mechanism is arranged on one side of the fixed ring, valve seats are welded on two ends of the inner wall of the valve body, a ball valve is installed on one end of the valve seat far away from the valve body, the top end of the ball valve is fixedly connected with an adjusting mechanism, a through groove is formed in the bottom end of the ball valve, an antistatic mechanism is connected in the through groove in a rolling manner, but a valve rod in the ball valve in the prior art is not flexible or can not be opened, and a sealing surface is likely to leak, so that the antistatic soft sealing ball valve is unsafe, stable and practical. Disclosure of utility model In order to overcome the defects existing in the prior art, the soft sealing ball valve is provided at present, so that the problems that a valve rod in the ball valve in the prior art cannot be turned or opened, a sealing surface is likely to leak, and the ball valve is unsafe, stable and practical are solved. In order to achieve the above purpose, a soft sealing ball valve is provided, which comprises a valve body and a ball body, be provided with the blowoff valve in the middle of the bottom of valve body, and the lower extreme of blowoff valve is provided with the valve gap, first stud is installed to the family of valve gap and the lower port of blowoff valve, and first hexagonal nut is installed to the outer end of first stud, center rotation activity has the spheroid in the valve gap, and installs the valve rod in the middle of the spheroidal upper portion, the middle part cover of valve rod is put in the protecgulum, and the upper end of protecgulum is fixed in the connection pad lower part to the connection pad is installed in the lower part of turbine. Further, a metal sheet is arranged between the valve cover and the valve body, the metal sheet is of a detachable structure, and the valve body is connected with the valve cover in a detachable mode. Further, the valve seat support ring is sleeved on the inner bottom of the valve body, a valve seat is arranged between the inner side surface of the valve seat support ring and the outer side surface of the ball body, a spring is arranged on the outer side surface of the valve seat support ring, and an O-shaped ring is arranged on the lower side surface of the valve seat support ring. Further, a through hole is formed in the center of the sphere, the centers of the turbine, the front cover, the valve rod and the sphere are all located on the same axis, and a sliding bearing is arranged between the upper portion of the sphere and the lower portion of the front cover. Further, packing is installed among valve rod, protecgulum and the connection pad, and installs the hexagon socket head cap screw between the upper portion of protecgulum and the upper portion of valve body to install the second stud between connection pad and the turbine, the second hexagon nut is installed to the lower part of second stud. Further, the middle part of the valve cover is provided with a lower supporting rod, the upper part of the lower supporting rod stretches into the center of the lower part in the valve body, and the lower part of the ball body is rotationally connected with the upper part of the lower supporting rod. The utility model has the beneficial effects that: 1. According to the utility model, two O-shaped sealing rings are adopted inside and outside the self-lubricating bearing and the stuffing box, and the V-shaped stuffing of PTFE is preset in the stuffing box, so that the reliability and feasibility of the sealing performance of the valve shaft are ensured; the drainage device of the valve can regularly drain the accumulation in the middle cavity, reduce the pollution of medium in the valve, and conveniently check the tightness of the valve seat from any direction without detaching the valve from the pipeline. 2. According to the utility model, the pre-tightening valve seat is loaded by the spring, when the medium in the middle cavity of the valve is abnormally boosted, the pressure in the middle cavity can be automatically released by compressing the spring, and the valve sea