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High-airtightness fire gate valve

A high airtight and fire-fighting technology, applied in shaft seals, valve devices, valve details, etc., can solve problems such as transmission medium pollution, and achieve the effects of overcoming failure, safety and excellent service life

Pending Publication Date: 2021-01-29
祥安消防科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, in view of the above problems, the present invention proposes a high airtight fire gate valve, which mainly solves the problem that the sealing packing of the gate valve in the prior art is easy to cause pollution to the conveying medium

Method used

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Embodiment Construction

[0025] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0026] refer to Figure 1 to Figure 6 , this embodiment provides a highly airtight fire gate valve, including a valve body 1, a valve cover 2, a gate assembly 3, a valve stem 4 and a hand wheel 5, and the valve cover 2 is installed on the top of the valve body 1 by bolts , the valve body 1 is provided with a feed port 11 and a discharge port 12 arranged coaxially, and between the feed port 11 and the discharge port 12 is a flow channel 13 for medium circulation, and the gate assembly 3 Set in the flow channel to block the flow channel 13, the bottom of the flow channel 13 is provided with a gate groove 14, the lower end of the valve stem 4 penetrates into the valve body 1 from the valve cover 2 and is screwed with the gate assembly 3 Connected, the upper end of the valve rod 4 is fixedly connected with the handwheel 5.

[0027] Define the direction...

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PUM

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Abstract

The invention relates to the field of gate valves, in particular to a high-airtightness fire gate valve which comprises a valve body, a valve deck, a flashboard assembly, a valve rod and a hand wheel.The valve body is provided with a feeding port and a discharging port, a flow channel is formed between the feeding port and the discharging port, the flashboard assembly is arranged in the flow channel, a flashboard groove is formed in the bottom of the flow channel, the lower end of the valve rod is connected with the flashboard assembly, the upper end of the valve rod is connected with the hand wheel, the flashboard assembly comprises a guide block, a left flashboard assembly body and a right flashboard assembly body, the left flashboard assembly body and the right flashboard assembly bodyare arranged on the two sides of the guide block, a guide column is arranged at the upper end of the guide block, a guide groove is formed in the guide column, internal threads are formed in the guide groove, the lower end of the valve rod is spirally arranged in the guide groove, an extending sleeve is arranged at the upper end of the valve deck, the guide column penetrates through the valve deck to stretch into the extending sleeve, the hand wheel is arranged at the upper end of the extending sleeve, a sealing scraping block and sealing filler are arranged on the side face, in contact withthe guide column, of the valve deck, and an annular protruding strip is arranged on the face, in contact with the guide column, of the sealing scraping block. The high-airtightness fire gate valve mainly solves the problem that in the prior art, sealing filler of the gate valve is prone to polluting a conveying medium.

Description

technical field [0001] The invention relates to the field of gate valves, in particular to a highly airtight fire gate valve. Background technique [0002] In the existing gate valve structure, the gate valve usually includes a valve body, a valve cover, a valve stem and a gate plate. The seal between the valve stem and the valve body is usually sealed by sealing packing. When the valve stem and the sealing packing have relative movement, Due to the plasticity of the packing, it generates a radial force and is in close contact with the valve stem. The lubricant impregnated in the sealing packing is squeezed out and an oil film is formed between the contact surfaces. Since the contact state is not particularly uniform, the contact part is easy. The state of "boundary lubrication" appears, which is called "bearing effect"; while the uncontacted concave part forms a small oil groove with a thick oil film, and the contact part and non-contact part form an irregular labyrinth, wh...

Claims

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Application Information

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IPC IPC(8): F16K3/12F16K3/314F16K3/316F16K27/04F16K27/08F16K41/04C22C38/42C22C38/44C22C38/54
CPCF16K3/12F16K3/0227F16K3/314F16K3/316F16K27/047F16K27/08F16K41/04C22C38/42C22C38/44C22C38/54
Inventor 杨金火
Owner 祥安消防科技有限公司
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