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CN-224201313-U - Bidirectional pneumatic valve with annular groove valve core

CN224201313UCN 224201313 UCN224201313 UCN 224201313UCN-224201313-U

Abstract

The utility model discloses a bidirectional pneumatic valve with a ring groove valve core, which relates to the technical field of bidirectional pneumatic valves and comprises a valve seat, wherein both ends of the valve seat are provided with fixed pipes, the left side of the valve seat is provided with a servo motor, the output end of the servo motor extends into the valve seat and is provided with a valve rod, the connecting plate is installed on the right side of valve rod, and the case is installed on the right side of connecting plate, first flange is installed on the right side of fixed pipe, and the right side of first flange is provided with the sealing mechanism who reduces the fluid seepage. This two-way pneumatic valve of annular case through placing the sealing strip in one side between first flange and second flange, then through the extrusion that first flange and second flange produced it when connecting the bolt to make the gap between first flange and the second flange filled, and then make the gap between first flange and the second flange reduce, avoid appearing the condition of fluid seepage.

Inventors

  • YANG XUEMEI
  • LANG XIAOLI
  • Qi Yanxue

Assignees

  • 青岛爵海机械科技有限公司

Dates

Publication Date
20260505
Application Date
20250701

Claims (7)

  1. 1. The bidirectional pneumatic valve comprises a valve seat (1), wherein fixed pipes (2) are respectively arranged at two ends of the valve seat (1), a servo motor (4) is arranged on the left side of the valve seat (1), the output end of the servo motor (4) extends to the inside of the valve seat (1) and is provided with a valve rod (5), a connecting plate (6) is arranged on the right side of the valve rod (5), and a valve core (7) is arranged on the right side of the connecting plate (6); The sealing mechanism is characterized in that a first flange (12) is arranged on the right side of the fixed pipe (2), a sealing mechanism for reducing fluid leakage is arranged on the right side of the first flange (12), the sealing mechanism comprises a second flange (13), the second flange (13) is connected with the first flange (12) through bolts (14), a sealing strip (15) is arranged between the first flange (12) and the second flange (13), a connecting pipe (3) is arranged on the left side of the second flange (13), and the connecting pipe (3) is attached to the fixed pipe (2); The lower extreme in the outside of valve rod (5) is provided with mounting panel (11), and the bottom of mounting panel (11) is provided with the travel limiting mechanism of control rotation angle.
  2. 2. The bidirectional pneumatic valve with the annular groove valve core according to claim 1, wherein a locking mechanism for limiting the bolt (14) is arranged in the sealing strip (15), the locking mechanism comprises an air bag (16), the air bag (16) is arranged in the sealing strip (15), a fixed block (17) is arranged on one side, far away from the first flange (12), of the second flange (13), and a limiting block (19) is connected in the fixed block (17) in a sliding manner through a piston.
  3. 3. The bidirectional pneumatic valve with the annular groove valve core according to claim 2, wherein the cross section of the limiting block (19) is semicircular, and the limiting block (19) is sleeved on the outer side of the bolt (14).
  4. 4. The bidirectional pneumatic valve with the annular groove valve core according to claim 3, wherein a connecting spring (18) is fixedly connected inside the fixed block (17), and an elastic structure is formed between the fixed block (17) and the limiting block (19) through the connecting spring (18).
  5. 5. The bidirectional pneumatic valve with the annular groove valve core according to claim 4, wherein the end part of the sealing strip (15) is of an arc-shaped structural design, and the inner side of the sealing strip (15) is attached to the outer side of the second flange (13).
  6. 6. The bidirectional pneumatic valve with the annular groove valve core according to claim 1, wherein the travel limiting mechanism comprises a torsion spring (8), the torsion spring (8) is wound on the lower end of the outer side of the valve rod (5), sliding blocks (9) are arranged on two sides of the mounting plate (11), and the mounting plate (11) matched with the sliding blocks (9) is arranged in the valve seat (1).
  7. 7. The bidirectional pneumatic valve with the annular groove valve core according to claim 6, wherein the bottom end of the torsion spring (8) is connected with the top end of the connecting plate (6), and an elastic mechanism is formed between the mounting plate (11) and the connecting plate (6) through the torsion spring (8).

Description

Bidirectional pneumatic valve with annular groove valve core Technical Field The utility model relates to the technical field of bidirectional pneumatic valves, in particular to a bidirectional pneumatic valve with a ring groove valve core. Background The bidirectional pneumatic valve is an important industrial valve, is a pneumatic valve with bidirectional circulation function, allows fluid to flow bidirectionally in a pipeline, and is generally composed of a valve body, a valve core, a sealing ring, a driving mechanism and the like; When the bidirectional pneumatic valve is used, the joint is easy to weaken sealing performance due to long-time use, so that fluid leaks when the fluid flows through the valve. To overcome the above-mentioned drawbacks, the prior art (chinese patent publication No. CN107023695B, application No. 2023-11-07) is a two-way double-structure pneumatic valve. The valve comprises a valve shell, wherein a valve cavity is formed in the middle of the valve shell, a left valve cavity and a right valve cavity are symmetrically formed in the middle of the valve shell and are communicated with each other, a sealing plate is arranged at the upper end and the lower end of the valve shell, a circle of sealing convex plates protruding upwards are arranged at the edges of the sealing plates, valve ports are further formed in the sealing plates, and a driving cylinder is further arranged at the lower end of the valve shell. The sealing of the upper part and the lower part of the valve is finished through the valve plug, the sealing convex plates are arranged on the sealing plates, two sealing flat plates are further arranged on the valve plug, when the valve plug is plugged, the valve plug is pressed into the valve opening, the corresponding sealing flat plates are pressed into the sealing convex plates, the valve opening is completely sealed, the sealing performance is improved, and the sealing performance and the compression resistance are improved. The mechanism can seal the valve through the mutual matching of the sealing flat plate and the sealing convex plate, so that the sealing performance is improved, but in the process of actual use, the sealing position is worn due to long-time use, and leakage is caused. Disclosure of utility model The utility model aims to provide a bidirectional pneumatic valve with a ring groove valve core, which solves the problem that in the prior art, the joint of the bidirectional pneumatic valve is easy to weaken sealing performance due to long-time use, so that fluid leaks when the fluid circulates through the valve. The bidirectional pneumatic valve comprises a valve seat, wherein both ends of the valve seat are provided with fixed pipes, the left side of the valve seat is provided with a servo motor, the output end of the servo motor extends into the valve seat and is provided with a valve rod, the right side of the valve rod is provided with a connecting plate, and the right side of the connecting plate is provided with a valve core; The right side of the fixed pipe is provided with a first flange, the right side of the first flange is provided with a sealing mechanism for reducing fluid leakage, the sealing mechanism comprises a second flange, the second flange is connected with the first flange through bolts, a sealing strip is arranged between the first flange and the second flange, the left side of the second flange is provided with a connecting pipe, and the connecting pipe is attached to the fixed pipe; The lower extreme in the valve rod outside is provided with the mounting panel, and the bottom of mounting panel is provided with the travel limit mechanism of control rotation angle. Further, the inside of sealing strip is provided with the locking mechanism that is used for carrying out spacing to the bolt, locking mechanism includes the gasbag, just the gasbag sets up in the inside of sealing strip, one side that the first flange was kept away from to the second flange is provided with the fixed block, and the inside of fixed block has the stopper through piston sliding connection. Further, the cross section of stopper is semi-circular, and overlaps the outside of locating the bolt. Further, the inside fixedly connected with connecting spring of fixed block, and constitute elastic structure through connecting spring between fixed block and the stopper. Further, the end part of the sealing strip is of an arc-shaped structural design, and the inner side of the sealing strip is attached to the outer side of the second flange. Further, the travel limiting mechanism comprises a torsion spring, the torsion spring is wound at the lower end of the outer side of the valve rod, the two sides of the mounting plate are provided with sliding blocks, and the mounting plate matched with the sliding blocks is arranged in the valve seat. Further, the bottom of the torsion spring is connected with the top of the connecting plate, and an elastic mechanism is formed b