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CN-121993687-A - Exhaust device applied to water suction port of fire engine

CN121993687ACN 121993687 ACN121993687 ACN 121993687ACN-121993687-A

Abstract

The invention relates to an exhaust device applied to a water suction port of a fire engine, and belongs to the technical field of exhaust equipment. The exhaust device comprises an automatic exhaust valve and a cover cap arranged at the water outlet of the fire engine, and the automatic exhaust valve is detachably connected with the cover cap. Through setting up automatic discharge valve, be used for releasing the extra impact of gas lock to the fire engine in the stifle, protected the water suction pipeline of fire engine promptly, also can not dismantle the stifle under the condition of the stifle and release the gas wherein, avoid personal injury, convenient operation, safe and reliable.

Inventors

  • YAO JIANFEI
  • SUN JUN
  • SONG XIAO
  • LIU GUANGZE
  • Bi Conglin
  • CAI ZHENHUA
  • LI ZHENG
  • XU TAO
  • WANG YUGANG
  • MENG QINGDONG

Assignees

  • 中国石油天然气股份有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (10)

  1. 1. The exhaust device applied to the water suction port of the fire engine is characterized by comprising an automatic exhaust valve (4) and a blank cap (2) arranged at the water outlet port (1) of the fire engine, wherein the automatic exhaust valve (4) is detachably connected with the blank cap (2).
  2. 2. An exhaust device applied to a water suction port of a fire engine according to claim 1, wherein the cover (2) is provided with a first through hole (5), the inner wall of the first through hole (5) is provided with internal threads, and the automatic exhaust valve (4) is in threaded connection with the first through hole (5).
  3. 3. An exhaust device for use at a fire truck suction nozzle according to claim 1, further comprising a manual exhaust valve (3) removably connected to the closure cap (2).
  4. 4. An exhaust device applied to a water suction port of a fire engine according to claim 3, wherein the cover (2) is provided with a second through hole (6), the inner wall of the second through hole (6) is provided with internal threads, and the manual exhaust valve (3) is in threaded connection with the second through hole (6).
  5. 5. An exhaust device applied to a water suction port of a fire engine according to claim 3, wherein the manual exhaust valve (3) comprises a valve body (10), a valve rod (11), a ball body (12), a valve seat (13), a first bearing (14), a second bearing (15) and the valve rod (11), a cavity channel (16) for accommodating the valve seat (13) and the ball body (12) is arranged in the valve body (10), the ball body (12) is positioned at the inner side of the valve seat (13), the first bearing (14) and the second bearing (15) are symmetrically arranged at two sides of the ball body (12), the other end of the first bearing (14) is connected with the valve rod (11), and the other end of the valve rod (11) is leaked outside the valve body (10).
  6. 6. An exhaust device for use in a fire engine's water intake according to claim 5, wherein the ball (12) is provided with a through hole (17).
  7. 7. An exhaust device for use in a fire engine's water intake according to claim 5, characterized in that a spring (18) is also provided between the valve body (10) and the ball (12).
  8. 8. The exhaust device applied to the water suction port of the fire truck as claimed in claim 5, wherein the other end of the valve rod (11) is provided with a swivel (19), and the valve rod (11) is driven to rotate by rotating the swivel (19), so that the relative positions of the through hole (17) of the ball body (12) and the cavity channel (16) are adjusted.
  9. 9. An exhaust device applied to a water suction port of a fire engine according to claim 5, wherein the surface of the cover (2) contacted with the manual exhaust valve (3) is provided with an angle scale mark for identifying the rotation angle of the valve rod (11).
  10. 10. The exhaust device applied to a water suction port of a fire engine according to claim 1, wherein the automatic exhaust valve (4) sets an opening critical pressure value, when the pressure of a water supply pipeline of the fire engine in the cover (2) is larger than the opening critical pressure value, the automatic exhaust valve (4) starts to automatically compress, the valve of the automatic exhaust valve (4) is opened, residual gas in the water supply pipeline is discharged, the pressure of the water supply pipeline is automatically reduced, and when the pressure is smaller than the opening critical pressure value, the automatic exhaust valve (4) is in a closed state, and the water supply pipeline supplies water.

Description

Exhaust device applied to water suction port of fire engine Technical Field The invention relates to an exhaust device applied to a water suction port of a fire engine, and belongs to the technical field of exhaust equipment. Background The fire engine uses the vehicle-mounted fire pump to pressurize water, and sprays the water out through the vehicle-mounted boom gun to achieve the aim of cooling and extinguishing flame, a small amount of gas is doped in the operation process of the fire pump, the gas is gathered at blind sausage dead angles such as the blank cap of a water suction port, and because the height of the vehicle-mounted boom gun of the part of the high-spraying fire engine is higher, the residual water is discharged in the process of discharging the residual water after the vehicle-mounted boom gun is used, the water in a water supply pipeline is extruded and accumulated under the atmospheric pressure and the inertia effect due to improper operation, so that the blind sausage dead angles are suddenly subjected to extremely high pressure, equipment damage is extremely easy to be caused, the normal use of the vehicle and the operation safety of operators are influenced, and in order to avoid the phenomenon, a pressure relief facility is required to be added in the water supply pipeline. In the process of exhausting and pressure releasing, an exhaust valve is needed, and Chinese patent grant publication number is CN212226170U, which discloses a button type manual exhaust valve, comprising a valve body, wherein the valve body is provided with an input end and an output end, the input end is communicated with the output end through a channel, a sealing element capable of sealing the input end is arranged in the input end, a button element is arranged in the output end, the button element is connected with the sealing element through a bolt penetrating through the channel, and a spring is arranged between the button element and the valve body. The button type manual exhaust valve adopts the combination of the button piece and the spring to control the position of the sealing piece, and in use, the exhaust valve can be controlled to exhaust by pressing the button piece, so that the use is more convenient, the complicated operation mode of the traditional exhaust valve is avoided, and the user experience is improved. The Chinese patent grant publication number CN208487255U discloses a 360-degree rotary manual exhaust valve capable of being rapidly discharged, which comprises a valve body, an air inlet hole arranged at the lower part of the valve body and a sealing hole arranged at the upper part of the valve body, wherein the air inlet hole is communicated with the sealing hole, a sealing screw matched with the air inlet hole is screwed in the sealing hole, the upper end of the sealing screw penetrates out of the sealing hole and is connected with a hand wheel, an annular rotary groove is formed in the outer wall of the valve body, a rotary pipe matched with the rotary groove is arranged in the rotary groove, the rotary pipe is connected with an exhaust pipe communicated with the rotary pipe, a plurality of vent holes uniformly distributed in circumference are formed in the outer wall of the upper part of the valve body, the vent holes are flush with the front end pipe orifice of the exhaust pipe, and a fixing plate is arranged in the middle part of the exhaust pipe. The exhaust pipe of the 360-degree rotary manual exhaust valve capable of being rapidly discharged can realize 360-degree rotation, is suitable for any installation environment, and can maximally improve the exhaust efficiency during exhaust. The Chinese patent grant publication No. CN206660383U discloses an automatic exhaust connecting buckle for a fire hose, which comprises a water hose connecting buckle and an exhaust valve, wherein an exhaust valve seat is arranged on the water hose connecting buckle, an internal thread is arranged on the exhaust valve seat, the exhaust valve consists of a valve cap, a valve core, a spring and a thrust ring, an external thread is arranged on the valve cap, the exhaust valve is arranged in the exhaust valve seat of the water hose connecting buckle, and the external thread of the valve cap on the exhaust valve is meshed with the internal thread of the exhaust chamber seat on the water hose connecting buckle. According to the fire hose, the exhaust valve is arranged on the connecting buckle of the fire hose, when the water pump begins to pressurize and discharge water, air in the water hose can be emptied section by section through the exhaust valve, and the exhaust chamber is automatically closed under the action of water pressure, so that the resistance of the air in the water hose is reduced, the flow of water is accelerated, the water outlet time is shortened, and precious time is saved for timely discharging water and extinguishing fire. The design is to realize the exhaust on the fire-fighting wate