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CN-224214821-U - Gas-liquid two-phase medium exhaust valve

CN224214821UCN 224214821 UCN224214821 UCN 224214821UCN-224214821-U

Abstract

The utility model belongs to the technical field of low-temperature medium conveying, and discloses a gas-liquid two-phase medium exhaust valve, which comprises a valve body with an opening at the top end, wherein the top end of the valve body is provided with a valve cover corresponding to the opening, one side of the upper surface of the valve cover is fixedly connected with an air outlet pipe, the inside of the air outlet pipe is rotatably connected with a second movable rod, the surface of the second movable rod is provided with a sealing piece, the upper side of the sealing piece is provided with a disc spring, the inside of the valve body is slidably connected with a first movable rod, the bottom end of the first movable rod is fixedly connected with a pontoon, the sealing piece can be driven to be automatically opened or closed through the pontoon and a lug, the exhaust operation of the valve body is realized, the sealing performance of the device can be further increased through an auxiliary sealing pad and a disc spring, the disc spring can provide continuous pretightening force, and when the low-temperature material is shrunk, the gap generated due to the size change can be automatically compensated, and the close fit of a sealing surface is ensured.

Inventors

  • HE WEI
  • XIA YONG

Assignees

  • 成都欣诺低温设备有限公司

Dates

Publication Date
20260508
Application Date
20250516

Claims (8)

  1. 1. The utility model provides a gas-liquid two-phase medium discharge valve, includes open-top's valve body, the top of valve body be provided with the valve gap that the opening corresponds, its characterized in that: the valve cover is characterized in that an air outlet pipe is fixedly connected to one side of the upper surface of the valve cover, a second movable rod is connected to the inner portion of the air outlet pipe in a rotating mode, a sealing piece is arranged on the surface of the second movable rod, a disc spring is arranged on the upper side of the sealing piece, a first movable rod is connected to the inner portion of the valve body in a sliding mode, a pontoon is fixedly connected to the bottom end of the first movable rod, a connecting rod is hinged to the bottom surface of the inner portion of the valve cover through a hinging rod, and the second movable rod and the first movable rod are movably connected with the connecting rod.
  2. 2. The gas-liquid two-phase medium exhaust valve according to claim 1, wherein the side surfaces of the second moving rod and the first moving rod are fixedly connected with protruding blocks, one sides, close to the two groups of protruding blocks, of the connecting rod are provided with connecting grooves, and the protruding blocks correspondingly slide in the connecting grooves.
  3. 3. The gas-liquid two-phase medium exhaust valve according to claim 1, wherein a spring is fixedly connected to the top end of the first moving rod, an installation pipe is fixedly connected to one side, close to the spring, of the surface of the valve cover, the first moving rod is slidably arranged in the installation pipe, and a pipe cover is screwed to the top end of the installation pipe.
  4. 4. The gas-liquid two-phase medium exhaust valve according to claim 3, wherein a plurality of groups of fastening bolts in annular arrays are arranged on the surface of the valve cover, and the valve cover is arranged at the top end opening of the valve body through the fastening bolts.
  5. 5. The gas-liquid two-phase medium exhaust valve according to claim 1, wherein an auxiliary sealing gasket is arranged on the lower side of the sealing element, a groove matched with the auxiliary sealing gasket is formed in the outer wall surface of the second moving rod, and the auxiliary sealing gasket is arranged on the outer surface of the second moving rod through the groove.
  6. 6. The gas-liquid two-phase medium exhaust valve according to claim 5, wherein the sealing member comprises an inner sealing block fixedly connected with the peripheral surface of the second moving rod and in a cylindrical structure, the cross section of the inner sealing block is in a T-shaped structure, an outer sealing block and the disc spring are sleeved on the outer wall surface of the inner sealing block from top to bottom in sequence, and a limiting block is arranged on the upper side of the outer sealing block.
  7. 7. The gas-liquid two-phase medium exhaust valve according to claim 6, wherein the inner wall of the limiting block is provided with an internal thread, the outer wall surface of the second moving rod is provided with an external thread, and the limiting block is arranged on the outer surface of the second moving rod through the thread.
  8. 8. The gas-liquid two-phase medium exhaust valve according to claim 6, wherein the upper sides of the outer sealing block and the auxiliary sealing pad are both in conical structures, and a sealing groove matched with the outer sealing block is formed in the air outlet pipe.

Description

Gas-liquid two-phase medium exhaust valve Technical Field The utility model belongs to the technical field of low-temperature medium conveying, and particularly relates to a gas-liquid two-phase medium exhaust valve. Background In a low-temperature pipeline system, the balance and adjustment of a gas-liquid two-phase medium are key links for guaranteeing the stable operation of the system. Because the flow characteristics of the gas and the liquid in the medium pipeline are obviously different, when the gas and the liquid exist in the medium pipeline at the same time, the pressure in the pipeline is often unstable due to the aggregation of the gas, and the normal operation of the system is further affected. The traditional gas-liquid separation and exhaust devices mostly adopt simple gravity separation or mechanical valve structures, and when the devices deal with complex gas-liquid two-phase medium environments, the problems of poor sealing effect, low reaction speed, high maintenance cost and the like often exist. In particular, under low temperature conditions, conventional exhaust valves tend to be difficult to achieve effective sealing due to material cold shrink effects and hardening of the seal, resulting in gas leakage and media waste. Therefore, a gas-liquid two-phase medium exhaust valve is provided for solving the problems. Disclosure of utility model In order to solve the problems in the prior art, the utility model provides a sealing structure with an elastic compensation function for a gas-liquid two-phase medium exhaust valve, which can automatically compensate a gap generated by dimensional change when a low-temperature material contracts cold, and ensure the close fitting of a sealing surface. In order to achieve the purpose, the gas-liquid two-phase medium exhaust valve comprises a valve body with an opening at the top end, a valve cover corresponding to the opening is arranged at the top end of the valve body, an air outlet pipe is fixedly connected to one side of the upper surface of the valve cover, a second movable rod is rotatably connected to the inside of the air outlet pipe, a sealing piece is arranged on the surface of the second movable rod, a disc spring is arranged on the upper side of the sealing piece, a first movable rod is connected to the inside of the valve body in a sliding mode, a pontoon is fixedly connected to the bottom end of the first movable rod, a connecting rod is hinged to the bottom surface of the inside of the valve cover through a hinging rod, and the second movable rod and the first movable rod are movably connected with the connecting rod. Preferably, the side surfaces of the second moving rod and the first moving rod are fixedly connected with protruding blocks, one side, close to the two groups of protruding blocks, of the connecting rod is provided with connecting grooves, and the protruding blocks correspondingly slide in the connecting grooves. Preferably, the top fixedly connected with spring of first movable rod, the valve gap surface is close to one side fixedly connected with installation pipe of spring, just first movable rod slidable sets up inside the installation pipe, the top spiro union of installation pipe has the tube cap. Preferably, the surface of the valve cover is provided with a plurality of groups of fastening bolts which are in annular arrays, and the valve cover is arranged at the top end opening of the valve body through the fastening bolts. Preferably, an auxiliary sealing gasket is arranged on the lower side of the sealing piece, a groove matched with the auxiliary sealing gasket is formed in the outer wall surface of the second moving rod, and the auxiliary sealing gasket is installed on the outer surface of the second moving rod through the groove. Preferably, the sealing element comprises an inner sealing block fixedly connected with the peripheral surface of the second movable rod and in a cylindrical structure, the cross section of the inner sealing block is in a T-shaped structure, the outer wall surface of the inner sealing block is sequentially sleeved with an outer sealing block and the disc spring from top to bottom, and a limiting block is arranged on the upper side of the outer sealing block. Preferably, the inner wall of the limiting block is provided with an internal thread, the outer wall surface of the second moving rod is provided with an external thread, and the limiting block is installed on the outer surface of the second moving rod through the thread. Preferably, the upper sides of the outer sealing block and the auxiliary sealing pad are both in conical structures, and a sealing groove matched with the outer sealing block is formed in the air outlet pipe. Compared with the prior art, the utility model has the following beneficial effects: 1. According to the utility model, the sealing element can be driven to be automatically opened or closed through the pontoon and the convex block, so that the exhaust ope