Buffer type exhaust valve
By introducing a buffer chamber and piston structure into the exhaust valve, combined with the design of the throttle, the impact water hammer problem caused by high-speed closure of the exhaust valve disc is solved, and the buffer closing and sealing effect is achieved, reducing noise and protecting the water supply pipeline.
Patent Information
- Application Number
- CN202422517120.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-17
AI Technical Summary
When the exhaust valve flap is closed, the high-speed collision occurs due to pressure, causing impact to the water hammer to cause harm to the water supply pipeline.
A buffer type exhaust valve is designed. By setting a buffer chamber and a piston structure in the valve body, the piston is used to push the pressure in the buffer chamber to increase to buffer the closing action, and a throttle is provided on the valve cover to adjust the slow exhaust, so that the valve disc is completely sealed.
It effectively avoids impact water hammers caused by high-speed closure, reduces damage to the water supply pipe, and adjusts the exhaust process through the throttle to reduce noise and improve sealing.
Smart Images
Figure CN223090120U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of exhaust valves, in particular to a buffer type exhaust valve. Background Art
[0002] During the use of the exhaust valve, due to the pressure effect on the valve flap of the exhaust valve when it closes, the closing action is extremely rapid, causing the liquid columns at the front and rear ends of the lower water supply pipe to collide at high speed, triggering a large impact water hammer, which poses a hazard to the water supply pipe. Content of the Utility Model
[0003] The purpose of the utility model is to provide a buffer type exhaust valve in view of the defects and deficiencies of the prior art.
[0004] To achieve the above purpose, the technical scheme adopted by the utility model is: a buffer type exhaust valve, including a valve body. The innovation lies in that: a support frame is arranged at the top of the valve body, a through hole is opened at the bottom of the support frame, and the through hole is communicated with the inside of the valve body. A valve cover is arranged at the top of the support frame. A cylinder sleeve and a piston are arranged inside the valve cover. A buffer cavity is formed between the upper side of the piston, the cylinder sleeve and the valve cover. A valve shaft is arranged on the piston. The lower end of the valve shaft extends into the valve body and is provided with a valve flap and a floating ball connecting piece, and the floating ball connecting piece is connected with a floating ball.
[0005] Further, a throttle is arranged at the top of the valve cover and is communicated with the buffer cavity and the atmosphere.
[0006] Further, a ring of valve seat rubber is arranged at the through hole of the support frame, and the valve flap is sealed with the valve seat rubber after rising.
[0007] After adopting the above structure, the beneficial effects of the utility model are as follows:
[0008] Through the buffer cavity and the piston, when the valve flap closes, the piston is pushed upward, increasing the pressure in the buffer cavity, thus playing a role in buffering the closing and avoiding high-speed impact, reducing the impact water hammer of the water supply pipe caused by the high-speed closing of the exhaust valve; a throttle is arranged on the valve cover above the buffer cavity, which can adjust the slow closing time and play a role in slow exhaust. When the pressure in the buffer cavity increases during the closing process of the exhaust valve, the throttle exhausts slowly, and finally the pressure in the buffer cavity is completely released, enabling the valve flap of the exhaust valve to be completely sealed and closed. Description of the Drawings
[0009] Figure 1 It is a schematic structural diagram of the utility model.
[0010] Explanation of the Reference Numerals in the Drawings:
[0011] 1 valve body, 2 support frame, 3 valve cover, 4 cylinder sleeve, 5 buffer chamber, 6 piston, 7 valve shaft, 8 valve disc, 9 float connector, 10 float, 11 throttle, 12 valve seat rubber. DETAILED DESCRIPTION
[0012] The utility model is further described below in conjunction with the accompanying drawings.
[0013] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.
[0014] See also Figure 1 A buffer type exhaust valve includes a valve body 1, a support frame 2 is arranged on the top of the valve body 1, a through hole is opened at the bottom of the support frame 2, and the through hole is connected to the inside of the valve body 1, a valve cover 3 is arranged on the top of the support frame 2, a cylinder sleeve 4 and a piston 6 are arranged inside the valve cover 3, a buffer chamber 5 is formed between the upper side of the piston 6, the cylinder sleeve 4 and the valve cover 3, a valve shaft 7 is arranged on the piston 6, the lower end of the valve shaft 7 extends into the valve body 1, and a valve disc 8 and a floating ball connector 9 are arranged, and the floating ball connector 9 is connected to a floating ball 10. Specifically, the floating ball 10 rises, and drives the valve disc 8 and the piston 6 to rise through the valve shaft 7. When the valve disc 8 is closed, it pushes the piston 6 upward, so that the pressure in the buffer chamber 5 increases, thereby playing a role of buffer closing.
[0015] In this embodiment, a throttle 11 is provided on the top of the valve cover 3, which is in communication with the buffer chamber 5 and the atmosphere. The throttle 11 is in communication with the buffer chamber 5 and the atmosphere, and plays a role of slow exhaust. During the closing process, after the pressure in the buffer chamber 5 increases, the throttle 11 slowly exhausts the air, and finally completely releases the pressure in the buffer chamber, so that the exhaust valve disc can be completely sealed and closed.
[0016] In this embodiment, a circle of valve seat rubber 12 is provided at the opening of the support frame 2. After the valve flap 8 rises, it is sealed with the valve seat rubber 12, which improves the sealing performance on the one hand and avoids the production of loud noise when the valve flap 11 rises on the other hand.
[0017] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.
Claims
1. A buffer type exhaust valve, comprising a valve body, characterized in that: A support frame is provided at the top of the valve body. A through port is opened at the bottom of the support frame, and the through port is communicated with the inside of the valve body. A valve cover is provided at the top of the support frame. A cylinder liner and a piston are provided inside the valve cover. A buffer chamber is formed between the upper side of the piston, the cylinder liner and the valve cover. A valve shaft is provided on the piston. The lower end of the valve shaft extends into the valve body and is provided with a valve flap and a floating ball connecting member. The floating ball connecting member is connected to a floating ball.
2. The buffer type exhaust valve according to claim 1, wherein: A throttle is provided at the top of the valve cover and is communicated with the buffer chamber and the atmosphere.
3. The buffer type exhaust valve according to claim 1, wherein: A ring of valve seat rubber is provided at the through port of the support frame. After the valve flap rises, it seals with the valve seat rubber.