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Poppet valve device for improving RTO sealing performance

A lift valve, sealing technology, applied in the direction of valve device, valve heating/cooling device, lift valve, etc., can solve the problems of complex exhaust gas composition, reduce the service life of the device, increase the leakage rate, etc., to improve the sealing performance of RTO , Improve the cooling effect and promote the effect of cold and heat exchange

Pending Publication Date: 2021-04-27
SHANGHAI PROFOUND ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Defects in the prior art include but are not limited to: 1. Due to the frequent use of the poppet valve and the complex composition of the exhaust gas, it is easy to cause wear, aging or even deformation of the components after repeated use, resulting in an increase in the leakage rate and affecting the RTO treatment efficiency; 2. In actual use, the RTO poppet valve uses a cylinder to perform movement. Due to the high temperature, when the cylinder reciprocates, friction generates a lot of heat, which not only greatly reduces the service life of the device, but also poses safety hazards.

Method used

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  • Poppet valve device for improving RTO sealing performance
  • Poppet valve device for improving RTO sealing performance
  • Poppet valve device for improving RTO sealing performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: In use, the cylinder 3 can control the movement of the push rod 4, and the push rod 4 drives the valve plate 16 to move through the guide cylinder 13 and the valve rod 15. When the valve plate 16 is covered on the valve seat 17, the poppet valve is in the position of Closed state; when the valve plate 16 is far away from the valve seat 17, the poppet valve is in the open state, at this time, exhaust gas can be provided to the combustion chamber, and the operation is flexible.

Embodiment 2

[0037] Embodiment 2: This device has a triple sealing function. First, the valve plate 16 can be attached to the valve seat 17, which is a "hard seal"; secondly, when the valve plate 16 is attached to the valve seat 17, the valve plate 16 There is a valve plate groove 161 on the top, so a sealed chamber is formed between the valve plate groove 161 and the valve seat 17. At this time, compressed air is introduced through the compressed air inlet 18 of the air chamber, so that a suppressed environment is formed in the above-mentioned sealed chamber. , the compressed air will be emitted to the outside of the chamber, so the exhaust gas cannot go out from this chamber, thereby achieving "air tightness"; finally, compressed air can also be introduced into the bent tube 14, where the compressed air is located in the graphite packing 12 is in contact with the guide cylinder 13 to prevent the exhaust gas from dissipating to the outside through the gap, thereby realizing the "shaft seal...

Embodiment 3

[0038] Embodiment 3: During the movement of the valve plate 16, whenever the valve plate 16 drives the infrared receiver 23 to pass the infrared transmitter 24 in the guide plate 21, the infrared receiver 23 will count and feed back this information to the PLC The controller 48 and the PLC controller 48 will control the drive motor 38 to run at high power according to the receiving frequency, and the drive motor 38 will drive the transmission shaft 39 to rotate when the valve plate 16 moves more times and the frequency is higher, so that the cam 40 and the driving wheel 41 rotate synchronously. On the one hand, the cam 40 is arranged under the push plate 36. During the continuous rotation, the cam 40 will intermittently lift up the push plate 36. When the push plate 36 is lifted up, , the movable plate 34 will be moved up through the extension rod 35, and then the cold air in the connecting pipe 29 will be squeezed into the cold air chamber 28, and the cold air chamber 28 will ...

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Abstract

The invention discloses a poppet valve device for improving RTO sealing performance. The poppet valve device for improving RTO sealing performance comprises an outer shell; an air cylinder is fixedly arranged on an air cylinder frame; a push rod is fixedly arranged at the power end of the air cylinder; a connecting piece is fixedly arranged on a knuckle bearing; a bent pipe is arranged on a guide cylinder in a communicating mode; a valve rod is fixedly arranged at the bottom of the guide cylinder; a valve plate is fixed to the bottom of the valve rod; a valve plate groove is formed in the valve plate; a valve seat is arranged below the valve plate; an air bin compressed air inlet, an air bin waste liquid discharging port and a poppet valve waste liquid discharging port are formed in the side wall of the outer shell in a communicating mode; and a guide plate is fixedly arranged in an inner cavity of the outer shell. The poppet valve device for improving RTO sealing performance has three sealing functions of hard sealing, air sealing and shaft sealing, cooling can be conducted to a corresponding degree according to the moving frequency of the valve plate, the situation that equipment is damaged after the valve plate generates heat due to friction is avoided, and the service life of the poppet valve device is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of poppet valves, in particular to a poppet valve device for improving the sealing performance of an RTO. Background technique [0002] As my country's environmental supervision continues to strengthen, VOCs treatment technology is becoming more mature, among which regenerative incinerator (RTO) is one of the mainstream technologies for VOCs treatment in the world. In the RTO treatment system, the poppet valve is one of the most important equipment components. The exhaust gas enters the combustion chamber through the rapid and frequent switching of the poppet valve and is fully burned, and finally reaches the standard discharge. Due to the action of the valve plate under the action of the cylinder, the opening and closing action is fast and the switching is frequent. During the long-term collision with the valve seat, the valve plate of the poppet valve will be deformed, worn, and uneven in strength, which w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K41/00F16K49/00F16K27/02F15B15/20
CPCF15B15/1485F16K1/00F16K27/02F16K41/00F16K49/00
Inventor 刘逊张竞宜刘迎董栋杨春贤张其超
Owner SHANGHAI PROFOUND ENVIRONMENTAL TECH CO LTD
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