Mechanical rotary transmission high-temperature back flushing valve
A blowback valve, high temperature technology, applied in the direction of mechanical equipment, lift valve, valve details, etc., can solve the problems of difficult sealing performance, economic loss, deformation of sealing surface, etc., to improve the sealing effect and service life, and solve the problem of indirect sealing Failure, the effect of improving continuous reliability
Pending Publication Date: 2020-06-16
张丰阁
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Problems solved by technology
[0002] The sealing performance of the blowback valve with a temperature higher than 400°C has become a problem. In an environment with a temperature higher than 400°C, all kinds of flexible sealing materials will fail completely, and the sealing performance cannot be guaranteed, especially for dynamic seals at high temperatures. It is difficult to solve. If a hard seal is used, due to thermal expansion, the sealing surface will be deformed and become invalid. The lifting and pulling device used in the blowback valve is basically a pneumatic solenoid valve. Due to the harsh environment, such as high temperature, large dust, etc. , resulting in frequent damage and failure of pneumatic devices, which not only caused economic losses, but also affected normal operation
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[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0018] Such as figure 1 , figure 2 As shown, the high temperature blowback valve with mechanical rotation transmission includes a valve body 1. The valve body includes an upper valve body 2, a middle valve body 3 and a lower valve body 4. A lifting shaft 5 is installed in the upper valve body 2, and the top of the lifting shaft 5 A rotary lifting drive mechanism 6 is installed, the bottom of the lifting shaft 5 extends into the middle valve body 3, and an upper sealing block 7 is installed on the end of the lifting shaft 5, and a lower sealing seat 8 is installed...
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The invention relates to a mechanical rotary transmission high-temperature back flushing valve, and belongs to the technical field of back flushing valve sealing. The mechanical rotary transmission high-temperature back flushing valve specifically comprises a lifting shaft installed in an upper valve body, wherein a rotary lifting driving mechanism is installed at the top of the lifting shaft; thebottom of the lifting shaft extends into a middle valve body; an upper sealing block is installed at the end of the lifting shaft; a lower sealing seat is installed on a lower valve body; a positioning pin is further arranged in the center of the upper sealing block; a positioning sleeve is fixed to the center of the lower sealing seat through a connecting rod; the positioning pin and the positioning sleeve are concentrically arranged; the positioning pin is inserted into the positioning sleeve; a conical lower contact surface is arranged on the lower sealing seat; correspondingly, a conicalupper contact surface is arranged on the circumference of the bottom of the upper sealing block; and the conical upper contact surface and the conical lower contact surface are in contact sealing. Themechanical rotary transmission high-temperature back flushing valve is good in sealing effect, adopts a mechanical driving structure and is high in operation reliability.
Description
technical field [0001] The invention relates to a high-temperature blowback valve with mechanical rotation transmission, which belongs to the technical field of blowback valve sealing. Background technique [0002] The sealing performance of the blowback valve with a temperature higher than 400°C has become a problem. In an environment with a temperature higher than 400°C, all kinds of flexible sealing materials will fail completely, and the sealing performance cannot be guaranteed, especially for dynamic seals at high temperatures. It is difficult to solve. If a hard seal is used, due to thermal expansion, the sealing surface will be deformed and become invalid. The lifting and pulling device used in the blowback valve is basically a pneumatic solenoid valve. Due to the harsh environment, such as high temperature, large dust, etc. , resulting in frequent damage and failure of pneumatic devices, which not only caused economic losses, but also affected normal operation. Con...
Claims
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IPC IPC(8): F16K1/00F16K1/38F16K25/00F16K31/04F16K31/52F16K35/16
CPCF16K1/00F16K1/38F16K25/005F16K31/047F16K31/52F16K35/16
Inventor 张丰阁
Owner 张丰阁