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Valve seat automatic compensation one-way valve structure

A one-way valve structure and automatic compensation technology, which is applied in the direction of control valves, valve devices, and functional valve types, can solve the problems of affecting the drive end, damage to the protection plate, and impact, so as to improve the working conditions, reduce the impact, and reduce the impact. effect of influence

Pending Publication Date: 2020-06-26
MILTON ROY IND SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] When the inlet pressure is normal pressure, the pressure on the medium side and the oil side of the diaphragm is balanced, and will not impact the retaining plate; when the inlet pressure rises, that is, the pressure p before the valve port 1 rises, the pressure difference before and after the valve port increases, that is (p 1 -p 2 ) increase, fixed lift check valve, maximum lift h s Constant, corresponding to L s Constant, corresponding to A v The flow rate at the valve port increases with the increase of the pressure difference between the front and rear of the valve port, and the diaphragm will quickly move to the oil side protection plate and impact the protection plate, resulting in damage to the protection plate and affecting the drive end.

Method used

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  • Valve seat automatic compensation one-way valve structure
  • Valve seat automatic compensation one-way valve structure
  • Valve seat automatic compensation one-way valve structure

Examples

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Embodiment

[0046] A valve seat automatic compensation check valve structure, such as Image 6 As shown, it includes a valve body 3 connected to the pump head 8, a valve seat installed inside the valve body 3 floating up and down, and a valve ball 4 placed on the valve seat. The bottom of the valve body 3 is fixed to the valve seat, and the valve seat includes a floating valve seat 1 in sealing contact with the valve ball 4, a bottom valve seat 5 fixed on the bottom of the valve body 3, and a floating valve seat 1 connected to the bottom valve seat 5 and capable of acting Bellows 6 to the automatic adjustment function. A limiting boss is provided inside the valve body 3 to limit the upper limit position of the floating valve seat 1 moving upward. The top end of the valve body 3 is provided with guiding and limiting ribs that limit the moving position of the valve ball 4 . A gasket 2 is provided at the contact between the valve body 3 and the pump head 8 . A gasket 2 is provided at the ...

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Abstract

The invention relates to a valve seat automatic compensation one-way valve structure. The valve seat automatic compensation one-way valve structure comprises a valve body (3), an automatic adjusting valve seat mounted in the valve body (3) to move up and down and a valve ball (4) placed on the automatic adjusting valve seat. Compared with the prior art, when inlet pressure is difference, the position height of a valve seat is automatically adjusted, then the maximum lift height of the valve ball is adjusted, quite stable flow is kept, and when a diaphragm moves towards the diaphragm oil side protection disc, impacting to the protection disc and the influence on the drive end are reduced.

Description

technical field [0001] The invention relates to a one-way valve structure, in particular to a valve seat automatic compensation one-way valve structure. Background technique [0002] Due to the requirements of the process and the characteristics of the conveying medium, many petroleum and chemical processes require the process pump to have a higher inlet pressure. In the suction stroke of the diaphragm pump, the pressure on the medium side of the diaphragm is the inlet pressure, and the oil side of the diaphragm is atmospheric pressure. When the inlet is at normal pressure, the pressure on both sides of the diaphragm is balanced during the suction process; when the inlet pressure increases, the pressure on the medium side of the diaphragm will be higher than that of the diaphragm oil. The pressure on the oil side of the diaphragm (usually the pressure on the oil side of the diaphragm is atmospheric pressure), and the pressure on both sides of the diaphragm is unbalanced. Th...

Claims

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Application Information

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IPC IPC(8): F16K15/04F16K15/14
CPCF16K15/04F16K15/141
Inventor 柳玉萍卫中山陈晓蓉李兴杰
Owner MILTON ROY IND SHANGHAI