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Double open board plug coal valve

A plug-in, valve-body technology, applied in sliding valves, valve details, valve devices, etc., can solve the problems of valve plate stuck, coal valve can not be opened, easy to enter between the valve plate and valve body, etc. The effect of maintenance

Inactive Publication Date: 2009-01-07
肖勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Coal-fired boilers in thermal power plants use ultra-fine pulverized coal. The ultra-fine pulverized coal is stored in the coal hopper. The coal hopper is under high negative pressure. The ultra-fine pulverized coal in the coal hopper needs to be discharged to the coal supply through the coal valve However, during the use of the currently used coal valve, ultra-fine pulverized coal easily enters between the valve plate and the valve body, and the valve plate is stuck, causing the coal valve to fail to open and close.

Method used

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  • Double open board plug coal valve
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Embodiment Construction

[0011] As shown in Figure 1 and Figure 2, a double-opening plate coal valve has a double-opening plate 3 in the valve body 1, and the outer end of the plate 3 is connected to the air pump 7 through a connecting rod 8; A valve seat 2 is installed at the inner cavity of the valve on the contact surface of the plate 3; an air bag cavity 4 is opened in the valve body 1 and on the contact surface with the insert plate 3, and an air bag 5 is arranged in the air bag cavity 4, and one end of the trachea 11 is connected to the air bag 5, One end is connected to the closed door air inlet 9 of the air pump 7; there is a sealing member 6 on the contact surface with the inserting plate 3 in the valve body 1.

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Abstract

The invention discloses a coal valve with a double-open inserting plate. A split inserting plate is positioned in a valve body. The outer end of the inserting plate is connected with an air pump. A valve seat is positioned at the edge of the contact surface between the valve port of the valve body and the inserting plate. An air bag chamber in the valve body is positioned on the contact surface of the inserting plate and the valve body. An air bag is positioned in the air bag cavity. One end of an air pipe is connected with the air bag, and the other end is connected with an air inlet for closing the air pump. A sealing component in the valve body is positioned on the contact surface of the inserting plate and the valve body. The invention has the following beneficial effects: ensuring coal can not to enter into the space between the valve body and the inserting plate during using the coal valve due to the valve seat, the air bag and the sealing component between the valve body and the inserting plate, thereby enabling the inserting plate to be smoothly opened and closed, and avoiding the occurrence of the unable discharge of coal due to jamming of the inserting plate and being convenient for maintenance on the coal feeder.

Description

technical field [0001] The invention relates to a coal valve. Background technique [0002] Coal-fired boilers in thermal power plants use ultra-fine pulverized coal. The ultra-fine pulverized coal is stored in the coal hopper. The coal hopper is under high negative pressure. The ultra-fine pulverized coal in the coal hopper needs to be discharged to the coal supply through the coal valve On the machine, while the current coal valve is in use, ultra-fine pulverized coal easily enters between the valve plate and the valve body, and the valve plate is stuck, causing the coal valve to fail to open and close. Contents of the invention [0003] The purpose of the present invention is to provide a high sealing coal valve. [0004] The object of the present invention is achieved by the following method: a double-opening plate coal valve, in which there is a double-opening plate in the valve body, and the outer end of the plate is connected with the air pump through a connecting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K41/00F16K3/314F16K31/122
Inventor 肖勇
Owner 肖勇