Pressure-balancing valve for irrigation system

An irrigation system and balancing valve technology, applied in the field of irrigation system pressure balancing valve, can solve problems such as unbalanced irrigation distribution, and achieve the effect of convenient connection

CN101963254AInactive Publication Date: 2011-02-02INST OF GENETICS & DEVELOPMENTAL BIOLOGY CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2011-02-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a pressure-balancing valve for an irrigation system, which is characterized in that: a valve body for connecting a water inlet / outlet pipe is provided with an interceptor plate and an overflow hole; a valve core arranged in the valve body consists of a cylinder body, a piston and a limit spring; a cone of an end part of the piston fits with the overflow hole; and water inlet channels are arranged among the piston, the cylinder body and the valve body. The pressure-balancing valve has simple structure, can be conveniently connected to each branch pipe of the irrigation system, and automatically balance water inlet pressure to keep the flow in an irrigation pipe consistent.
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Description

technical field

[0001] The invention relates to a pressure balance valve of an irrigation system, in particular to a pressure adjustment applied on a small irrigation pipeline, and belongs to the technical field of irrigation equipment accessories. Background technique

[0002] At present, the production cost of water pressure regulating equipment used in the field of agricultural micro-irrigation technology is high, and the operation is complicated in installation and use, which largely limits the popularization and application of micro-irrigation technology. The applicant once disclosed two kinds of pressure regulating devices, 1. Float-type automatic pressure regulator for irrigation: Patent No. 03257227.1. The problem exposed in use is that it depends on the buoyancy of the float to return, and the action is unstable when the water flow changes. 2. Piston-type automatic pressure regulator for irrigation, patent number 03123545.X, this pressure regulating mechanism is con...

Examples

Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Such as Figure 1-3 The pressure balance valve of the irrigation system shown is provided with threads or bayonets connecting the inlet and outlet pipes on the left and right, and the valve body 2 is provided with a cut-off plate 8 and a flow hole 9. The valve core of the present invention is a cylinder, a piston 6 and a valve body arranged in the valve body. The limit spring 5, the tapered surface at the end of the piston coincides with the flow hole, and the water inlet channel 3 is arranged between the piston cylinder and the valve body.

[0020] The valve core is a stepped cylinder fixed in the valve body, and the corresponding piston 6 is also stepped. When water flows into the balance valve, pressure is formed on the piston 6. When the water pressure is small, the piston remains motionless under the support of the limit ...