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Fireproof check valve

A check valve, valve body technology, applied in the direction of control valve, valve device, functional valve type, etc., can solve problems such as automatic failure of fire check valve, and achieve the effect of reliable operation

Pending Publication Date: 2020-09-01
梅慧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the fire check valve automatically fail in low temperature environment

Method used

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  • Fireproof check valve
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see figure 1 , figure 2 and image 3 , the fire check valve includes a body 1, a valve plate 7, a connecting rod 2, an elastic element and a paddle 3, the body 1 is provided with an exhaust port 131, and the connecting rod 2 connects the valve plate 7 and the body 1 and is used to drive the valve plate 7 Close the exhaust port 131, the plectrum 3 is rotatably set on the body 1, one end of the elastic element is set on the body 1, and the other end of the elastic element is set on the plectrum 3 and is used to drive the plectrum 3 to rotate relative to the body 1.

[0034] It should be noted that: the existing elastic element is a torsion spring, and the torsion spring is sleeved on the rotating shaft of the plectrum 3. When the torsion spring is sleeved on the rotating shaft of the plectrum 3, one end of the torsion spring is fixed on the On the base 1 , the other end of the torsion spring abuts against the upper surface of the plectrum 3 . Since the elastic element...

Embodiment 2

[0045] The difference from the first embodiment is that the structure of the fuse assembly is improved in this embodiment.

[0046] see Figure 7 , in this embodiment, the fuse assembly includes at least one fuse piece 42 and at least one stop ring 43, the stop ring 43 is made of fusible solder or metal, and the stop ring 43 is clamped on the first fuse piece 42 Between a fuse part 422 and a second fuse part 423 of the fuse piece 42 . When the stop ring 43 is made of metal, the stop ring 43 will not be melted, and when the stop ring is made of eutectic solder, the stop ring 43 and the fuse piece 42 are melted simultaneously. With such a design, the anti-deformation capability of the fuse link 42 will be significantly enhanced, and the fire check valve will prevent automatic failure in a low temperature environment.

[0047] In this embodiment, in addition to clamping the stop ring 43 in this embodiment between the first fuse part 422 of the fuse link 42 and the second fuse p...

Embodiment 3

[0049] The difference from the first embodiment is that the structure of the fuse assembly is improved in this embodiment.

[0050] see Figure 8 , in this embodiment, the fuse assembly includes at least one fuse ring 43, the fuse ring 43 is provided with a mounting hole, the fuse ring 43 is sleeved on the fastener 41 and is used to control the axial direction of the stop plate 5 range of motion.

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Abstract

The invention relates to a fireproof check valve in order to solve the problem that a fireproof check valve is out of operation automatically under a low-temperature environment. The fireproof check valve comprises a body, a valve plate, a connecting rod, an elastic element and a shifting plate. The body is provided with an exhaust port. The connecting rod is connected with the valve plate and thebody and used for driving the valve plate to close the exhaust port. One end of the elastic element is arranged on the body, the other end of the elastic element is arranged on the shifting plate, and the elastic element is used for driving the shifting plate to rotate relative to the body. The fireproof check valve further comprises a fusing mechanism and a stop plate. The stop plate is clampedbetween the fusing mechanism and the body. The stop plate is provided with a rotation stop part. When the rotation stop part is clamped between the fusing mechanism and the body, the rotation stop part is arranged on the shifting plate to stop the shifting plate from rotating relative to the body. After the fusing mechanism does motion, the stop plate moves relative to the body, and the rotation stop part is separated from the shifting plate.

Description

technical field [0001] The invention relates to a fireproof check valve. Background technique [0002] The locking structure (refer to the utility model patent with the notification number CN206830892 for the specific structure) includes a valve seat, a paddle, a temperature-sensing element and an elastic element. The paddle is rotatably connected to the valve seat. The other end is connected with the paddle and drives the paddle against the temperature sensing element. [0003] Since the temperature sensing element includes the first copper sheet and the second copper sheet, the first copper sheet and the second copper sheet are connected as a whole by fusible solder, the first copper sheet is fixedly connected with the valve seat, the second copper sheet is connected with the plectrum Therefore, when the other end of the elastic element is connected to the plectrum and drives the plectrum to abut against the temperature sensing element, the second copper piece is always s...

Claims

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Application Information

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IPC IPC(8): F16K15/03
CPCF16K15/033
Inventor 梅慧
Owner 梅慧
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