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CN-224214780-U - Self-operated multistage rotary pressure reducing valve

CN224214780UCN 224214780 UCN224214780 UCN 224214780UCN-224214780-U

Abstract

The utility model relates to the technical field of self-operated regulating valves, in particular to a self-operated multistage rotary pressure reducing valve which comprises a valve body, wherein a piston block is tightly attached to the inner wall of the top of the valve body, a valve rod is fixedly connected to the inner wall of the piston block, a valve block is fixedly connected to the bottom of the valve rod, the outer wall of the valve block is attached to the inner wall of the valve body, a seat body is fixedly connected above the outer wall of the valve rod, a shell is in clearance fit above the outer wall of the valve rod, and a spring is fixedly connected to the bottom of the shell. Through valve body, valve piece, piston piece, block, gag lever post, pedestal, riser, casing, valve rod, spring and revolution mechanic's cooperation for the device can be through rotating the worm when using, and the worm drives the worm wheel and rotates, and the worm wheel drives the screw rod and rotates, and the screw rod drives the pedestal and upwards moves, and pedestal and casing cooperation compress the spring, and then the staff of being convenient for carries out direct multistage regulation to self-operated control valve, the staff of being convenient for uses.

Inventors

  • HUANG HUI
  • WU YUNFEI
  • Shao Huidan

Assignees

  • 浙江利水科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250703

Claims (6)

  1. 1. The utility model provides a self-operated multistage rotary pressure reducing valve, includes valve body (1), its characterized in that, the top inner wall of valve body (1) closely laminates there is piston piece (4), the inner wall fixedly connected with valve rod (8) of piston piece (4), the bottom fixedly connected with valve piece (3) of valve rod (8), the outer wall of valve piece (3) laminates with the inner wall of valve body (1) mutually, the outer wall top fixedly connected with pedestal (7) of valve rod (8), the outer wall top clearance fit of valve rod (8) has casing (9), the bottom fixedly connected with spring (13) of casing (9), the bottom of spring (13) and the top fixed connection of pedestal (7), the outer wall below clearance fit of valve rod (8) has block (5), the bottom of block (5) and the top fixed connection of valve body (1), the one end fixedly connected with gag lever (6) of block (5), one side of gag lever (6) is equipped with revolution mechanic (2).
  2. 2. The self-operated multistage rotary pressure reducing valve according to claim 1, wherein the rotary structure (2) comprises a transverse block (2 a 3), the inner wall of the transverse block (2 a 3) is in clearance fit with the lower part of the outer wall of the limit rod (6), one end of the transverse block (2 a 3) is fixedly connected with the lower part of one side of the seat body (7), one side of the transverse block (2 a 3) is provided with a shell (2 a 1), the bottom of the shell (2 a 1) is fixedly connected with the top of the block (5), the top inner wall of the shell (2 a 1) is rotationally connected with a screw rod (2 a 2) through a bearing, the bottom of the screw rod (2 a 4) is fixedly connected with a worm wheel (2 a 4), the inner wall of the worm wheel (2 a 4) and the inner wall of the screw rod (2) are in clearance fit with the lower part of the outer wall of the valve rod (8), the upper part of the outer wall of the screw rod (2 a 2) is in threaded connection with the bottom inner wall of the seat body (7), the rear part of the worm wheel (2 a 4) is in meshed connection with the top of the block (5), and one side of the shell (2 a) is connected with one side of the outer wall of the shell (2 a) through the bearing (1).
  3. 3. The self-operated multistage rotary pressure reducing valve according to claim 1, wherein the top of the limit rod (6) is fixedly connected with one side of the bottom of the shell (9).
  4. 4. The self-operated multistage rotary pressure reducing valve according to claim 1, wherein a rubber pad (12) is tightly attached above the outer wall of the valve rod (8), and the bottom of the rubber pad (12) is fixedly connected with the bottom of the inner wall of the shell (9).
  5. 5. The self-operated multistage rotary pressure reducing valve according to claim 1, wherein a pressing plate (10) is fixedly connected to the top of the valve rod (8).
  6. 6. The self-operated multistage rotary pressure reducing valve according to claim 5, wherein the outer wall of the pressure plate (10) is fixedly connected with a rubber sleeve (11), and the outer wall of the rubber sleeve (11) is attached to the inner wall of the shell (9).

Description

Self-operated multistage rotary pressure reducing valve Technical Field The utility model relates to the technical field of self-operated regulating valves, in particular to a self-operated multistage rotary pressure reducing valve. Background The self-operated regulating valve is also called as self-operated control valve, and is a regulating valve which can drive valve to automatically work by means of self-pressure of medium flowing through valve as energy source, and does not need external power supply and secondary instrument. The existing self-operated regulating valve (application number: 202420186312.5) capable of preventing abrasion of a valve rod is used for extruding redundant grease into a connecting cover through a piston block, the piston block can prevent the grease from entering the valve body and being mixed with fluid in the valve body, the self-operated regulating valve still exists, when the self-operated regulating valve is used, an external inserted rod is often required to be regulated according to the use requirement to be inserted into a regulating groove of the self-operated regulating valve, the self-operated regulating valve is rotated, the multistage regulating work of the self-operated regulating valve is further realized, the self-operated regulating valve is inconvenient to directly regulate in multiple stages by workers, the use of the self-operated regulating valve is inconvenient, in addition, when the self-operated regulating valve is used, the top of the self-operated regulating valve can be regulated with a medium pipeline, the medium can enter the shell to exert pressure on a pressing plate, and the valve rod penetrates through the inner wall of the shell, so that the double-operated regulating valve is inconvenient for workers to conduct double-seal work, and leakage of the shell and the valve rod position is easy to occur. Disclosure of Invention The utility model aims to solve the defects that in the prior art, a worker cannot conveniently and directly adjust a self-operated adjusting valve in multiple stages, the worker cannot conveniently use the self-operated adjusting valve, double sealing work is inconvenient for the worker, and leakage between a shell and a valve rod is easy to occur. In order to achieve the above purpose, the present utility model provides the following technical solutions: The self-operated multistage rotary pressure reducing valve is characterized in that a piston block is tightly attached to the inner wall of the top of the valve body, a valve rod is fixedly connected to the inner wall of the piston block, a valve block is fixedly connected to the bottom of the valve rod, the outer wall of the valve block is attached to the inner wall of the valve body, a seat body is fixedly connected to the upper portion of the outer wall of the valve rod, a shell is in clearance fit with the upper portion of the outer wall of the valve rod, a spring is fixedly connected to the bottom of the shell, the bottom of the spring is fixedly connected to the top of the seat body, a block is in clearance fit with the lower portion of the outer wall of the valve rod, the bottom of the block is fixedly connected with the top of the valve body, a limiting rod is fixedly connected to one end of the block, and one side of the limiting rod is provided with a rotary structure. Preferably, the rotating-structure comprises a transverse block, the inner wall of the transverse block is in clearance fit with the lower part of the outer wall of the limiting rod, one end of the transverse block is fixedly connected with one side lower part of the base body, one side of the transverse block is provided with a shell, the bottom of the shell is fixedly connected with the top of the block body, the inner wall of the top of the shell is rotationally connected with a screw rod through a bearing, the bottom of the screw rod is fixedly connected with a worm wheel, the inner wall of the worm wheel and the screw rod are in clearance fit with the lower part of the outer wall of the valve rod, the upper part of the outer wall of the screw rod is in threaded connection with the inner wall of the bottom of the base body, a worm is meshed and connected with the rear part of the worm wheel, and one side of the outer wall of the worm is rotationally connected with one end inner wall of the shell through the bearing. Preferably, the top of the limiting rod is fixedly connected with one side of the bottom of the shell. Preferably, a rubber pad is tightly attached to the upper portion of the outer wall of the valve rod, and the bottom of the rubber pad is fixedly connected with the bottom of the inner wall of the shell. Preferably, the top of the valve rod is fixedly connected with a pressing plate. Preferably, the outer wall of the pressing plate is fixedly connected with a rubber sleeve, and the outer wall of the rubber sleeve is attached to the inner wall of the shell. The self-operated multis