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Energy-saving-type backflow prevention system

An energy-saving, check valve technology, used in water supply pipeline systems, water supply installations, buildings, etc., can solve problems such as large workload, large spring pressure, long maintenance time, etc., to reduce water loss, reliable sealing, and opening. Close the relaxing effect

Pending Publication Date: 2017-09-08
HUALAN DESIGN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the valve is closed, the spring force is the smallest, and when the valve is fully open, the spring force is the largest, so when the flow rate of the system decreases, the valve is often in a half-open state under the action of the spring force; when the valve is checked, the valve is closed The spring force is the smallest when the valve is closed, so no effective check can be formed when the valve is closed; the spring pressure is the largest when the valve is fully open, which seriously affects the system efficiency
However, due to the limitation of the structure, all kinds of backflow preventers can not be repaired online. During maintenance, the backflow preventer needs to be removed from the pipeline, and then the check valve device should be replaced or repaired.
This is a lot of work and takes a long time to repair

Method used

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  • Energy-saving-type backflow prevention system

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Effect test

Embodiment 1

[0019] see figure 1 , the working principle of an energy-saving backflow prevention system described in a preferred embodiment of the present invention is as follows:

[0020] An energy-saving backflow prevention system of the present invention includes a gate valve, a water meter 2 connected to the gate valve, the water meter 2 is connected to a Y-shaped filter for filtering water, rubber joints are installed at the end of the pipeline, and the gate valve on the water inlet pipeline is changed to The rotary cutting valve 1 is connected to the water meter 2 through the pipeline, and the water meter 2 is connected to the rubber flap check valve 5 for preventing the water from flowing backward.

[0021] The system includes an upstream part, a midstream part, and a downstream part. The upstream part includes a rotary cut valve 1, a water meter 2, and a rubber flap check valve 5. A pressure gauge 3 and a pressure gauge 3 are installed on the pipeline between the water meter 2 and ...

Embodiment 2

[0024] An energy-saving backflow prevention system, including a gate valve, a water meter 2 connected to the gate valve, the water meter 2 connected to a Y-shaped filter for filtering water, a rubber joint is installed at the end of the pipeline, and the gate valve on the water inlet pipeline is changed to a rotary cut valve 1 , The rotary valve 1 is connected to the water meter 2 through the pipeline, and the water meter 2 is connected to the rubber disc check valve 5 for preventing the water from flowing backward.

[0025] The system includes an upstream part, a midstream part, and a downstream part. The upstream part includes a rotary cut valve 1, a water meter 2, and a rubber flap check valve 5. A pressure gauge 3 and a pressure gauge 3 are installed on the pipeline between the water meter 2 and the rubber flap check valve 5. Drain valve 4; the midstream part includes rotary cut valve 1, the downstream part includes rubber disc check valve 5 and rotary cut valve 1, and the ...

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Abstract

The invention relates to an energy-saving-type backflow prevention system, in particular to the field of mechanical engineering components. The system aims to effectively solve the problem of water loss, and has the advantages of being simple in structure and convenient to install. The system includes a gate valve and a water meter for connecting the gate valve, wherein the water meter is connected to a Y-shaped filter for filtering water, and is provided with a rubber joint at the end of a pipeline; the gate valve of a water inlet pipeline is changed into a rotary valve, the rotary valve is connected with the water meter through the pipeline, and the water meter is connected with a rubber clack check valve for preventing water from flowing backwards. By arranging the energy-saving-type backflow prevention system, the water loss is controlled conveniently and effectively.

Description

technical field [0001] The invention relates to the field of mechanical engineering components, in particular to an energy-saving backflow prevention system. Background technique [0002] In order to prevent the backflow of sewage from the pipe guide in the water pipe network, it is generally required to use two check valves in series to form a backflow preventer. The backflow preventer is mainly used in direct drinking water systems and occasions that have strict requirements on the water quality of the pipeline system. Most of the current backflow preventers are Y-shaped filters with large resistance and large size according to national standards, and pressure-reducing backflow preventers. The head loss is generally 0.7kg / cm2, and the head loss is relatively large. During normal water supply, it must be added. Large water supply pressure, high energy consumption. And this structure is more complicated. At the same time, the check of the current pipeline check valve is re...

Claims

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Application Information

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IPC IPC(8): E03B7/07
CPCE03B7/077
Inventor 陈成贵肖睿书
Owner HUALAN DESIGN GRP CO LTD
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