Water-saving minitype backflow preventer

A kind of backflow preventer and miniature technology, applied in functional valve types, control valves, engine components, etc., can solve problems such as water waste, improve sealing, prevent periodic splashing, and ensure water-saving functions.

Inactive Publication Date: 2015-11-11
TIANJIN TANGGU WATER SEAL VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the inlet pressure of the existing backflow preventer fluctuates, the drain valve will frequently open to discharge water, resulting in waste of water resources. A water-saving miniature backflow preventer that can overcome the above problems needs further research and development

Method used

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  • Water-saving minitype backflow preventer

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, a water-saving miniature backflow preventer of the present invention includes a valve body 1, a conical valve plate 2, a first gasket 3, a first spring 4, a valve seat 5, a valve plate 6, and a second gasket 7 , second spring 8, valve cover 9, adjusting nut 10, first O-ring 11, guide rod 12, diaphragm 13, pressure ring 14, second O-ring 15, lower valve seat 16, hex nut 17, flat The gasket 18, the adjusting spring 19, the valve seat 5 and the lower valve seat 16 are all assembled on the valve body 1, the valve seat 5 and the lower valve seat 16 are vertically distributed, and a second O-shaped valve is arranged between the lower valve seat 16 and the valve body 1 ring 15, and under the pressure of the medium, the conical valve plate 2 and valve plate 6 leave the sealing surface, and the medium circulates normally. Under the action of...

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Abstract

The invention provides a water-saving minitype backflow preventer which comprises a dual-seal-pair device. The dual-seal-pair device is composed of a valve sealing seat bipyramid opening and a conical valve plate. A control channel is arranged on a valve sealing seat between two sealing pairs of the dual-seal-pair device, a water inlet cavity is divided into a main cavity body and a control cavity body by the valve sealing seat bipyramid opening and the conical valve plate, and the control channel is communicated with the control cavity body through a through hole in a valve. The water-saving minitype backflow preventer has the beneficial effects that periodic splashing of a water escape valve can be effectively avoided, and the water saving function is achieved.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to a water-saving miniature backflow preventer. Background technique [0002] The backflow preventer is a kind of hydraulic control that strictly limits the water in the pipeline to flow in one direction according to the current water supply network in our country, especially when the backflow pollution of the drinking water pipeline is serious, and there is no effective backflow pollution prevention device. Combined device, its function is to prevent the medium in the pipeline from flowing back under any working conditions, so as to avoid backflow pollution. [0003] When the inlet pressure of the existing backflow preventer fluctuates, the drain valve will frequently open to discharge water, resulting in waste of water resources. A water-saving miniature backflow preventer that can overcome the above problems needs further research and development. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/02
CPCF16K15/023
Inventor 蔡春喜
Owner TIANJIN TANGGU WATER SEAL VALVE
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