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CN-224214837-U - Valve core structure of pneumatic valve

CN224214837UCN 224214837 UCN224214837 UCN 224214837UCN-224214837-U

Abstract

The utility model discloses a valve core structure of a pneumatic valve, which comprises a valve body and a valve cover, wherein a first threaded rod is connected inside the valve cover in a threaded manner, connecting rods are fixedly connected to the upper end and the lower end of the first threaded rod, a handle is fixedly connected to the upper part of the connecting rod, a damping rod is fixedly connected to the lower part of the connecting rod, a connecting cylinder is fixedly connected to the lower part of the damping rod, the connecting cylinder is sleeved outside the damping rod and the connecting rod, a spring is fixedly connected between the connecting rod and the inner wall of the connecting cylinder, the spring is sleeved outside the damping rod, a valve is fixedly connected to the lower part of the connecting cylinder, and a supporting table matched with the valve is fixedly connected inside the valve body, so that the hydraulic power at the moment of closing the valve can be buffered, and the valve body is prevented from being damaged.

Inventors

  • He Shungao
  • LIN YI

Assignees

  • 自贡工业阀门制造有限公司

Dates

Publication Date
20260508
Application Date
20250625

Claims (6)

  1. 1. A pneumatic valve core structure comprises a valve body (1) and a valve cover (2) and is characterized in that a first threaded rod (3) is connected to the inner thread of the valve cover (2), a connecting rod (7) is fixedly connected to the upper end and the lower end of the first threaded rod (3), a handle (11) is fixedly connected to the upper portion of the connecting rod (7), a damping rod (6) is fixedly connected to the lower portion of the connecting rod (7), a connecting cylinder (5) is fixedly connected to the lower portion of the damping rod (6), a spring (8) is sleeved outside the damping rod (6) and the connecting rod (7), a valve (4) is fixedly connected to the lower portion of the connecting cylinder (5), and a supporting table (18) matched with the valve (4) is fixedly connected to the inner portion of the valve body (1).
  2. 2. The valve core structure of a pneumatic valve according to claim 1, wherein lifting grooves (9) are formed in two sides of the connecting cylinder (5), follow-up blocks (10) are fixedly connected to two sides of the lower portion of the connecting rod (7), and the follow-up blocks (10) are slidably connected to the inside of the lifting grooves (9).
  3. 3. The valve core structure of a pneumatic valve according to claim 1, wherein a positioning sheet (12) is fixedly connected between the connecting rod (7) at the upper side and the first threaded rod (3).
  4. 4. The valve core structure of a pneumatic valve according to claim 1, wherein a first inclined table (19) is arranged on the outer side of the lower portion of the valve (4), and a second inclined table (20) matched with the first inclined table (19) is arranged on the upper portion of the supporting table (18).
  5. 5. The valve core structure of a pneumatic valve according to claim 4, wherein a second threaded rod (13) is connected to one side of the valve cover (2) through internal threads, a supporting ring (14) opposite to the first inclined table (19) is connected to the lower portion of the second threaded rod (13) in a rotating mode, a third threaded rod (15) is connected to one side of the valve cover (2) through internal threads, and a positioning hole (16) opposite to the third threaded rod (15) is formed in the upper portion of the supporting ring (14).
  6. 6. The pneumatic valve core structure according to claim 1 is characterized in that a flange plate (17) is fixedly connected between the valve body (1) and the valve cover (2).

Description

Valve core structure of pneumatic valve Technical Field The utility model relates to the technical field of pneumatic valves, in particular to a valve core structure of a pneumatic valve. Background The pneumatic valve is widely applied to various industrial fields such as chemical industry, petroleum, electric power, metallurgy, pharmacy, food and the like, is used for controlling the flow of media such as liquid, gas, steam and the like, and plays roles of adjusting, intercepting, guiding and the like. The pneumatic valve has the advantages of high response speed, high control precision, high bearing pressure and the like, and is widely applied to industrial automation control systems. When the pneumatic valve is closed, the speed of water flow in the pipeline can be rapidly reduced to zero from an initial value, and the rapid change of the fluid momentum can generate huge impact force, so that the pressure at the valve is increased instantaneously, and the valve connection part can be damaged due to excessive pressure. Disclosure of utility model The utility model aims to provide a valve core structure of a pneumatic valve, which solves the problems in the prior art. In order to achieve the purpose, the pneumatic valve core structure comprises a valve body and a valve cover, wherein a first threaded rod is connected inside the valve cover in a threaded manner, connecting rods are fixedly connected to the upper end and the lower end of the first threaded rod, handles are fixedly connected to the upper portion of the connecting rods, damping rods are fixedly connected to the lower portion of the connecting rods, connecting cylinders are fixedly connected to the lower portion of the damping rods, the connecting cylinders are sleeved outside the damping rods and the connecting rods, springs are fixedly connected between the connecting rods and the inner walls of the connecting cylinders, the springs are sleeved outside the damping rods, valves are fixedly connected to the lower portion of the connecting cylinders, and supporting tables matched with the valves are fixedly connected to the inner portions of the valve bodies. Preferably, lifting grooves are formed in two sides of the connecting cylinder, follow-up blocks are fixedly connected to two sides of the lower portion of the connecting rod at the lower side of the connecting cylinder, and the follow-up blocks are slidably connected to the inside of the lifting grooves. Preferably, a locating plate is fixedly connected between the connecting rod and the first threaded rod at the upper side. Preferably, a first inclined table is arranged on the outer side of the lower portion of the valve, and a second inclined table matched with the first inclined table is arranged on the upper portion of the supporting table. Preferably, the inner thread on one side of the valve cover is connected with a second threaded rod, the lower part of the second threaded rod is rotationally connected with a supporting ring which is opposite to the first inclined table, the inner thread on one side of the valve cover is connected with a third threaded rod, and the upper part of the supporting ring is provided with a positioning hole which is opposite to the third threaded rod. Preferably, a flange plate is fixedly connected between the valve body and the valve cover. Compared with the prior art, the utility model has the beneficial effects that: 1. According to the utility model, the handle rotates the first threaded rod, so that the valve moves downwards to block water flow, the water hammer force of the water impacts the valve, and the valve moves upwards to buffer the water hammer force at the moment of closing the valve through the compression damping rod and the spring, so that the valve body is prevented from being damaged; 2. The utility model also makes the support ring move downwards by rotating the second threaded rod, the support ring presses the outer side of the upper part of the valve, and the third threaded rod moves downwards to be inserted into the positioning hole by rotating the third threaded rod, so that the balance of the two sides of the support ring is ensured, the valve is prevented from moving upwards at will, and the tightness of the valve is ensured. Drawings FIG. 1 is a perspective view of a first view of the present utility model; FIG. 2 is a cross-sectional view of a second perspective view of the present utility model; Fig. 3 is an enlarged view of a third view of a partial structure according to the present utility model. In the figure, 1, a valve body; 2, a valve cover, 3, a first threaded rod, 4, a valve, 5, a connecting cylinder, 6, a damping rod, 7, a connecting rod, 8, a spring, 9, a lifting groove, 10, a follow-up block, 11, a handle, 12, a locating piece, 13, a second threaded rod, 14, a supporting ring, 15, a third threaded rod, 16, a locating hole, 17, a flange plate, 18, a supporting table, 19, a first inclined table, 20 and a second inc