Flow regulating valve with overpressure protection function
A flow regulating valve and overpressure protection technology, which is applied in control valves, safety valves, balance valves, etc., can solve problems such as lack of overpressure protection, and achieve the effect of preventing fluid backflow
Active Publication Date: 2015-12-23
ZHONGSHAN YATAI MACHINERY
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Problems solved by technology
[0002] In the feeding system of the glue injection machine, it usually includes a raw pulp conveying system and a color paste conveying system. When the product colloid does not need to be dyed, the raw pulp is directly supplied. When dyeing is required, it is necessary to Raw pulp and color paste are output after proportioning and mixing, so there are various pump bodies, valve bodies, pipelines and other hydraulic devices involved in the feeding system of the glue injection machine, the hydraulic devices in the feeding system, the hydraulic system The configuration will determine the stability, reliability and safety of the entire feeding system. In the feeding system, various flow regulating valves are usually matched to achieve different ratios. However, the current flow regulating valve only realizes the flow regulating function. Does not have functions such as overvoltage protection
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[0018] refer to figure 1 , figure 2 , figure 1 , figure 2 It is a structural schematic diagram of a specific embodiment of the present invention. As shown in the figure, the flow regulating valve with overpressure protection includes a main valve body 1 and a flow regulating device 2 .
[0019] As shown in the figure, the main valve body 1 is provided with a first cavity 11 and a second cavity 12, and the first cavity 11 and the second cavity 12 communicate through a communication hole 13, the The first cavity 11 is provided with a fluid inlet 14, the second cavity 12 is provided with a fluid outlet 15, and a spring check valve is arranged in the main valve body 1, and the spring check valve includes a spring 16 and a seal 17, one end of the spring 16 presses against the inner wall of the second cavity 12, and the other end of the spring 17 presses against the seal 17, and the spring 17 can press the seal 17 to the communication hole 13 and seal the communication The hol...
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The invention discloses a flow regulating valve with an overpressure protection function. The flow regulating valve comprises a main valve body and a flow regulating device; a first cavity and a second cavity are formed in the main valve body and communicated through a first communication hole, a fluid inlet is formed in the first cavity, and a fluid outlet is formed in the second cavity; a spring type one-way valve for communicating the first cavity with the second cavity is arranged in the main valve body; the flow regulating device comprises an outer shell, an adjusting screw, a pressure adjusting shaft, a pushing pin and a spring device, the movement distance of an ejection sealing piece at the front end of the pushing pin can be adjusted by rotating the adjusting screw, so that an opening of the communication hole is adjusted, and the flow adjusting function is achieved; and when the pressure of the second cavity is too large, the pressure adjusting shaft and the pushing pin are jacked to overcome elasticity of the spring device to backwards move, the function of the spring type one-way valve is recovered, fluid backflow is prevented, and the overpressure protection function is achieved.
Description
technical field [0001] The invention relates to a flow regulating valve with overpressure protection applied to a material supply system of a glue injection machine. Background technique [0002] In the feeding system of the glue injection machine, it usually includes a raw pulp conveying system and a color paste conveying system. When the product colloid does not need to be dyed, the raw pulp is directly supplied. When dyeing is required, it is necessary to Raw pulp and color paste are output after proportioning and mixing, so there are various pump bodies, valve bodies, pipelines and other hydraulic devices involved in the feeding system of the glue injection machine, the hydraulic devices in the feeding system, the hydraulic system The configuration will determine the stability, reliability and safety of the entire feeding system. In the feeding system, various flow regulating valves are usually matched to achieve different ratios. However, the current flow regulating val...
Claims
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Login to View More IPC IPC(8): F16K15/04F16K17/20
CPCF16K15/044F16K17/20
Inventor 赵维李永涛李业
Owner ZHONGSHAN YATAI MACHINERY