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CN-224229305-U - Double-seal ball valve

CN224229305UCN 224229305 UCN224229305 UCN 224229305UCN-224229305-U

Abstract

The utility model discloses a double-seal ball valve, and particularly relates to the technical field of ball valves, which comprises a first valve body and a second valve body, wherein a first connecting pipe communicated with the inside of the first valve body is fixedly arranged at the top end of the first valve body, a second connecting pipe is arranged at the top end of the first connecting pipe, valve cores are arranged in the first valve body and the second valve body, the top ends of the valve cores are fixedly connected with a first valve rod, and a second valve rod is arranged at the top end of the first valve rod. According to the utility model, the valve core, the first valve rod and the outer end of the second valve rod are sealed and protected through the first sealing ring and the second sealing ring, and the elastic force is improved through the plurality of first springs and the second springs, so that the double sealing effect inside the ball valve is better, and the first sealing ring and the second sealing ring are arranged at the detachable connection part, so that the mounting and replacing processes of the first sealing ring and the second sealing ring are simpler and more convenient, and the practicability is stronger.

Inventors

  • SHENG JUNFENG
  • Dai Jiuliang

Assignees

  • 瓦泰阀门(丽水)有限公司

Dates

Publication Date
20260512
Application Date
20250605

Claims (7)

  1. 1. A dual seal ball valve, comprising: The valve comprises a first valve body (1) and a second valve body (2), wherein a first connecting pipe (3) communicated with the inside of the first valve body is fixedly arranged at the top end of the first valve body (1), a second connecting pipe (4) is arranged at the top end of the first connecting pipe (3), a valve core (5) is arranged in the first valve body (1) and the second valve body (2), a first valve rod (6) is fixedly connected to the top end of the valve core (5), a second valve rod (7) is arranged at the top end of the first valve rod (6), the first valve rod (6) is arranged inside the first connecting pipe (3), and the top end of the second valve rod (7) extends to the top of the second connecting pipe (4) and is connected with the second connecting pipe (4) in a rotating mode; The first seal assembly comprises a first mounting groove (8) formed in the inner wall of the joint of the first valve body (1) and the second valve body (2), a first limit groove (9) is formed in the inner wall of the first mounting groove (8), a first seal ring (10) is arranged in the first limit groove (9), the inner end of the first seal ring (10) is tightly contacted with the outer end of the valve core (5), a first limit ring (11) is fixedly arranged at the outer end of the first seal ring (10), the first limit ring (11) is arranged in the first limit groove (9), a first mounting cavity (12) is formed in the first seal ring (10), a plurality of first springs (13) are fixedly arranged in the first mounting cavity (12), and a second seal assembly similar to the first seal assembly in structure is arranged at the joint of the first connection pipe (3) and the second connection pipe (4).
  2. 2. The double-seal ball valve of claim 1, wherein the second seal assembly comprises a second mounting groove (14) formed in the inner wall of the joint of the first connecting pipe (3) and the second connecting pipe (4), a second limiting groove (15) is formed in the inner wall of the second mounting groove (14), a second seal ring (16) is arranged in the second mounting groove (14), the inner end of the second seal ring (16) is tightly contacted with the outer end of the joint of the first valve rod (6) and the second valve rod (7), a second limiting ring (17) is fixedly arranged at the outer end of the second seal ring (16), the second limiting ring (17) is arranged in the second limiting groove (15), a second mounting cavity (18) is formed in the second seal ring (16), and a plurality of second springs (19) are fixedly arranged in the second mounting cavity (18).
  3. 3. The double-seal ball valve according to claim 1, wherein the outer ends of the joints of the first valve body (1) and the second valve body (2) are fixedly provided with first flanges (20), and the two first flanges (20) are fixedly connected through a plurality of first bolts (21).
  4. 4. The double-sealing ball valve of claim 1, wherein the outer ends of the joints of the first connecting pipe (3) and the second connecting pipe (4) are fixedly provided with second flanges (22), and the two second flanges (22) are fixedly connected through a plurality of second bolts (23).
  5. 5. The double-seal ball valve of claim 1, wherein a connecting square rod (24) is fixedly arranged at the bottom end of the second valve rod (7), a connecting square groove (25) corresponding to the connecting square rod (24) in size is formed in the top end of the first valve rod (6), and the connecting square rod (24) is arranged in the connecting square groove (25).
  6. 6. A double-seal ball valve according to claim 1, wherein a handle (26) is fixedly arranged at the top end of the second valve rod (7).
  7. 7. A double-seal ball valve according to claim 1, wherein a third flange (27) is fixedly arranged at the outer part of one end of the first valve body (1) and the second valve body (2) which are far away from each other.

Description

Double-seal ball valve Technical Field The utility model relates to the technical field of ball valves, in particular to a double-seal ball valve. Background The ball valve is a valve with an opening and closing part (ball body) driven by a valve rod and rotating around the axis of the ball valve, and can be used for regulating and controlling fluid. The opening and closing member (ball) has a through hole aligned with the conduit to allow fluid to pass therethrough when the ball valve is in the open position and is biased away from the conduit to prevent fluid flow when the ball valve is in the closed position. The ball valve has the characteristics of quick switch, low flow resistance, high pressure resistance, corrosion resistance, high reliability, multiple purposes, easy operation and the like. At present, when the ball valve is in actual use, most of the ball valve is sealed by arranging a rubber sealing ring in the ball valve, but after the rubber ring is extruded and rubbed for a long time, the contact between the rubber ring and a valve core and between the rubber ring and a valve rod is not tight enough, and at the moment, the liquid leakage phenomenon can occur, and the process of disassembling and replacing the rubber ring is inconvenient because the sealing ring is positioned in the ball valve. Disclosure of utility model The utility model aims to provide a double-sealing ball valve, which solves the defects in the technology. In order to achieve the above purpose, the utility model provides a double-seal ball valve, comprising: The valve comprises a first valve body and a second valve body, wherein a first connecting pipe communicated with the inside of the first valve body is fixedly arranged at the top end of the first valve body, a second connecting pipe is arranged at the top end of the first connecting pipe, valve cores are arranged in the first valve body and the second valve body, a first valve rod is fixedly connected to the top end of the valve core, a second valve rod is arranged at the top end of the first valve rod, the first valve rod is arranged in the first connecting pipe, and the top end of the second valve rod extends to the top of the second connecting pipe and is rotationally connected with the second connecting pipe; The first seal assembly comprises a first mounting groove formed in the inner wall of the joint of the first valve body and the second valve body, a first limit groove is formed in the inner wall of the first mounting groove, a first seal ring is arranged in the first limit groove, the inner end of the first seal ring is tightly contacted with the outer end of the valve core, a first limit ring is fixedly arranged at the outer end of the first seal ring, the first limit ring is arranged in the first limit groove, a first mounting cavity is formed in the first seal ring, a plurality of first springs are fixedly arranged in the first mounting cavity, and a second seal assembly similar to the first seal assembly in structure is arranged at the joint of the first connecting pipe and the second connecting pipe. Preferably, the second seal assembly comprises a second mounting groove formed in the inner wall of the joint of the first connecting pipe and the second connecting pipe, a second limiting groove is formed in the inner wall of the second mounting groove, a second sealing ring is arranged inside the second mounting groove, the inner end of the second sealing ring is in tight contact with the outer end of the joint of the first valve rod and the second valve rod, a second limiting ring is fixedly arranged at the outer end of the second sealing ring, the second limiting ring is arranged inside the second limiting groove, a second mounting cavity is formed in the second sealing ring, and a plurality of second springs are fixedly arranged inside the second mounting cavity. Preferably, the outer ends of the joints of the first valve body and the second valve body are fixedly provided with first flanges, and the two first flanges are fixedly connected through a plurality of first bolts. Preferably, the outer ends of the joints of the first connecting pipe and the second connecting pipe are fixedly provided with second flanges, and the two second flanges are fixedly connected through a plurality of second bolts. Preferably, the bottom end of the second valve rod is fixedly provided with a connecting square rod, the top end of the first valve rod is provided with a connecting square groove corresponding to the connecting square rod in size, and the connecting square rod is arranged inside the connecting square groove. Preferably, the top end of the second valve rod is fixedly provided with a handle. Preferably, a third flange is fixedly arranged outside one end, far away from each other, of the first valve body and the second valve body. In the technical scheme, the utility model has the technical effects and advantages that: Seal protection is carried out case, firs