Rotary wheel pulverized coal feed reversing valve
A technology of rotary and reversing valves, which is applied in the direction of multi-way valves, valve devices, valve details, etc., can solve problems such as large gaps in the middle cavity, inaccessible switches, poor safety and reliability, etc., to simplify the structure of the valve body and ensure Continuity, enhanced sealing effect
Active Publication Date: 2021-11-23
HEFEI GENERAL MACHINERY RES INST
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Problems solved by technology
[0003] The reversing valve in the prior art (application number: 201010253065.9) discloses a reversing valve including an eccentric combined sealing valve seat. The reversing valve has a heavy structure and a complicated sealing structure of the valve seat. Easy to jam, poor safety and reliability, etc.
And the reversing valve (Application No.: 201210317117.3) discloses a sliding type pulverized coal reversing valve structure with one inlet and two outlets. If it enters the middle cavity during operation, the switch may not be in place, which will affect its safety and reliability
Method used
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Embodiment Construction
[0041] Such as Figure 1-8 As shown, the rotary wheel pulverized coal feed reversing valve includes an inlet valve cover 1, a valve body 3, and an outlet valve cover 4 arranged in sequence. A rotor 2 is arranged coaxially inside the valve body 3 , and the rotor 2 rotates inside the valve body 3 . The inlet valve cover 1 is provided with an inlet flow channel 11, the outlet valve cover 4 is provided with a plurality of outlet flow channels, and the planes on both sides of the rotor 2 are provided with several through holes. The inlet channel 11 on the inlet valve cover 1, the through hole corresponding to the rotor 2 itself, and the outlet channel corresponding to the outlet valve cover 4 form passages one by one, and ensure that when the passage is formed, the outlet of the inlet channel 11 is connected to the entrance of the corresponding through hole. The sizes are the same, and they overlap relatively, and the faces of the inlet valve cover 1 and the outlet valve cover 4 r...
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The invention relates to the field of valves, in particular to a rotary wheel-type pulverized coal feed reversing valve, which includes an inlet valve cover, a rotor, and an outlet valve cover arranged in sequence, and the inlet valve cover is provided with an inlet flow channel. The outlet bonnet is provided with a plurality of outlet flow channels, and the rotor is provided with several through holes, and the inlet, through holes, and outlet flow channels on the inlet bonnet are formed into passages one by one by rotating the rotor; the inlet bonnet The faces of the valve cover and the outlet valve cover that are close to / in contact with the rotor are all planes. The sealing surface of the valve seat of the reversing valve in the present invention is all plane, and the rotation is smoother, and the jamming phenomenon is not easy to occur. Compared with the prior art, the reversing valve of the present invention has very small gaps in the middle chamber of the valve body, small overall size and light structure, and can adapt to maintaining high reliable sealing performance under long-term operating conditions.
Description
technical field [0001] The invention relates to the field of valves, in particular to a rotary wheel type pulverized coal feeding reversing valve. Background technique [0002] In the dry pulverized coal gasification process, the pulverized coal feed reversing valve is installed on the pulverized coal delivery pipeline of the gasification device, and is mainly used for switching the airborne pulverized coal medium flow between the coal feeding pipeline and the circulation pipeline. What it transports is pulverized coal medium, with high-pressure gas as the carrier. The gasification process requires that the reversing time of the pulverized coal feed reversing valve be less than 3s, and the reversing is stable and reliable. Since the pulverized coal feed reversing valve is equipped with cut-off ball valves on the pipelines behind the valve, the requirements for its own sealing are not high. However, if the sealing performance of the pulverized coal feed reversing valve can ...
Claims
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IPC IPC(8): F16K11/074F16K27/04F16K31/16B65G53/46
CPCB65G53/4616B65G53/4666F16K11/074F16K27/045F16K31/16
Inventor 王渭陈凤官明友耿圣陶余宏兵叶晓节王勤
Owner HEFEI GENERAL MACHINERY RES INST