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CN-224229392-U - Pneumatic single-seat quick response regulating valve

CN224229392UCN 224229392 UCN224229392 UCN 224229392UCN-224229392-U

Abstract

The utility model discloses a pneumatic single-seat quick response regulating valve, which comprises a pneumatic film executing mechanism and a bracket arranged at the bottom of the pneumatic film executing mechanism, wherein the bottom of a fixed outer frame is provided with a mounting frame, the mounting frame is arranged at the bottom end of a valve rod, two sides of the bottom end of the valve rod are respectively provided with a sliding rod, sliding blocks are respectively arranged on the sliding rods, one side, far away from the valve rod, of each sliding block is provided with an upward-moving buffer spring, a rotating piece is arranged on each sliding block, a pressing plate is arranged on each valve rod, two sides of the bottom of each pressing plate are also respectively provided with a rotating piece, a linkage rod is respectively arranged between the rotating pieces on the same side, the top of each pressing plate is provided with a vertical buffer spring, and the bottom of the mounting frame is provided with a valve core.

Inventors

  • ZHANG KAIQIAN
  • HAN JITAI
  • Hua Jiong
  • HUANG YAN
  • YANG FANG

Assignees

  • 无锡华益电力阀门有限公司
  • 无锡学院

Dates

Publication Date
20260512
Application Date
20250519

Claims (7)

  1. 1. A pneumatic single-seat quick response regulating valve comprises a pneumatic film executing mechanism (1) and a bracket (4) arranged at the bottom of the pneumatic film executing mechanism (1); The pneumatic valve is characterized in that an execution positioner (3) is arranged on the side face of the support (4), a pneumatic guide pipe (2) is arranged between the execution positioner (3) and the pneumatic film executing mechanism (1), a valve rod (5) is arranged in the middle of the support (4), a packing gland (6) is arranged at the bottom of the support (4), a top cover (7) is arranged below the support (4), and a valve body (9) is arranged below the top cover (7); The valve is characterized in that a fixed outer frame (18) is arranged at the top of the valve body (9) and inside the top cover (7), a mounting frame (15) is arranged at the bottom of the fixed outer frame (18), the mounting frame (15) is arranged at the bottom end of the valve rod (5), sliding rods (17) are respectively arranged at two sides of the bottom end of the valve rod (5), sliding blocks (16) are respectively arranged on the sliding rods (17), an upward-moving buffer spring (13) is arranged at one side, far away from the valve rod (5), of each sliding block (16), a downward-moving buffer spring (14) is arranged at one side, close to the valve rod (5), of each sliding block (16), a rotating piece (21) is arranged on each sliding block (16), a pressing plate (19) is also respectively arranged at two sides of the bottom of each pressing plate (19), a linkage rod (12) is respectively arranged between the rotating pieces (21), a vertical buffer spring (20) is arranged at the top of each pressing plate (19), and a valve core (8) is arranged at the bottom of each mounting frame (15).
  2. 2. The pneumatic single-seat quick response regulating valve according to claim 1, wherein the fixed outer frame (18) is fixedly arranged with the valve body (9), the mounting frame (15) is movably connected with the fixed outer frame (18), and the mounting frame (15) can move up and down in the fixed outer frame (18).
  3. 3. A pneumatic single-seat quick response regulating valve as claimed in claim 2, wherein the sliding rod (17) is welded with the mounting frame (15) and the valve rod (5) respectively, the upward movement buffer spring (13) and the downward movement buffer spring (14) are sleeved with the sliding rod (17) respectively, the sliding rod (17) is spliced with the sliding block (16), and the sliding block (16) can slide on the sliding rod (17).
  4. 4. A pneumatic single-seat quick response regulating valve as claimed in claim 3, wherein the rotating member (21) is welded with the sliding block (16), the rotating member (21) is welded with the pressing plate (19), the linkage rod (12) is rotationally connected with the rotating member (21), and the linkage rod (12) can push and pull the sliding block (16).
  5. 5. A pneumatic single-seat quick response regulating valve as claimed in claim 4, wherein the pressing plate (19) is welded with the valve rod (5), the vertical buffer spring (20) is sleeved with the valve rod (5), and the pressing plate (19) can compress the vertical buffer spring (20).
  6. 6. A pneumatic single-seat quick response regulating valve according to claim 5, wherein the valve rod (5) passes through the fixed outer frame (18) and the top cover (7), the valve core (8) is welded with the mounting frame (15), and the valve core (8) can move up and down along with the mounting frame (15).
  7. 7. The pneumatic single-seat quick response regulating valve according to claim 6, wherein a sealing gasket (11) is arranged at the bottom of the valve core (8), a sealing ring (10) is arranged at the communicating position of the valve body (9), and the sealing gasket (11) on the valve core (8) can form sealing with the sealing ring (10).

Description

Pneumatic single-seat quick response regulating valve Technical Field The utility model belongs to the technical field of single-seat regulating valves, and particularly relates to a pneumatic single-seat quick response regulating valve. Background The pneumatic single-seat quick-response regulating valve is a valve which uses compressed air as power source, and utilizes actuating mechanism to drive valve core to quickly act so as to implement accurate control of technological parameters of fluid flow rate, pressure or temperature, etc. and is characterized by that in the single-seat structural design, i.e. in the valve body only one valve seat and valve core are set, so that its sealing property is good, and it is applicable to the occasion requiring tight closing, the quick response capability benefits from the optimized pneumatic actuating mechanism and the lightweight valve core design, can quickly follow the change of a control signal, dynamically adjusts fluid parameters, meets the control requirement of an industrial automation system on high real-time requirements, and is widely applied to quick process control loops in industries such as petroleum, chemical industry, electric power and the like. However, when the existing pneumatic single-seat regulating valve is operated, the valve rod is overlong, so that the valve rod is easy to shake in the moving process, the valve core is not tightly closed, and meanwhile, the valve rod and the valve core are possibly impacted greatly by the switch of the valve core, so that the stability of the valve core is influenced. Disclosure of utility model The utility model aims to provide a pneumatic single-seat quick response regulating valve, which solves the problems that when the existing pneumatic single-seat regulating valve is operated, the valve rod is too long, so that the valve rod is easy to shake in the moving process, the valve core is not tightly closed, and meanwhile, the valve core is likely to be opened or closed to cause larger impact on the valve rod and the valve core, so that the stability of the valve core is affected. In order to achieve the aim, the utility model provides the technical scheme that the pneumatic single-seat quick response regulating valve comprises a pneumatic film executing mechanism and a bracket arranged at the bottom of the pneumatic film executing mechanism; The device comprises a bracket, a pneumatic film executing mechanism, a valve rod, a packing gland, a top cover and a valve body, wherein the side surface of the bracket is provided with the executing positioner, the pneumatic guide pipe is arranged between the executing positioner and the pneumatic film executing mechanism, the valve rod is arranged in the middle of the bracket, the packing gland is arranged at the bottom of the bracket, the top cover is arranged below the bracket, and the valve body is arranged below the top cover; The valve is characterized in that a fixed outer frame is arranged at the top of the valve body and inside the top cover, a mounting frame is arranged at the bottom of the valve rod, sliding rods are respectively arranged at two sides of the bottom of the valve rod, sliding blocks are respectively arranged on the sliding rods, an upward-moving buffer spring is arranged on one side, away from the valve rod, of the sliding blocks, a downward-moving buffer spring is arranged on one side, close to the valve rod, of the sliding blocks, a rotating piece is arranged on the sliding blocks, a pressing plate is arranged on the valve rod, rotating pieces are also respectively arranged on two sides of the bottom of the pressing plate, linkage rods are respectively arranged between the rotating pieces, a vertical buffer spring is arranged at the top of the pressing plate, and a valve core is arranged at the bottom of the mounting frame. Preferably, the fixed outer frame is fixedly installed with the valve body, the installation frame is movably connected with the fixed outer frame, and the installation frame can move up and down in the fixed outer frame. Preferably, the sliding rod is welded with the mounting frame and the valve rod respectively, the upward moving buffer spring and the downward moving buffer spring are sleeved with the sliding rod respectively, the sliding rod is spliced with the sliding block, and the sliding block can slide on the sliding rod. Preferably, the rotating member is welded with the sliding block, the rotating member is welded with the pressing plate, the linkage rod is rotationally connected with the rotating member, and the linkage rod can push and pull the sliding block. Preferably, the pressing plate is welded with the valve rod, the vertical buffer spring is sleeved with the valve rod, and the pressing plate can compress the vertical buffer spring. Preferably, the valve rod passes through the fixed outer frame and the top cover, the valve core is welded with the mounting frame, and the valve core can move up and down