A pressure reducing valve controlled by compressed gas
A technology for compressing gas and pressure reducing valves, which is applied in the field of pressure reducing valves, can solve problems such as inefficiency, affecting the performance of pressure reducing valves, limiting the application range of pressure reducing valves, etc., to achieve the effect of expanding the application range and improving the use performance
Inactive Publication Date: 2017-12-12
南通汇恒液压设备有限公司
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Problems solved by technology
In the injection molding of liquid silicone material, due to the high viscosity of liquid silicone, the conventional formula for calculating hydraulic pressure is not effective for it. The flow rate of liquid silicone flowing from the inlet end to the outlet end of the pressure reducing valve and the pressure at the outlet end are often not accurate. The control of the pressure reducing valve affects the performance of the pressure reducing valve, thus limiting the application range of the pressure reducing valve
Method used
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Embodiment Construction
[0028] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings and examples, and the arrows in the accompanying drawings indicate the moving direction of the adjusting rod. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0029] see Figure 1 to Figure 5 , a pressure reducing valve controlled by compressed gas according to the present invention, comprising a cylinder housing 10 having an accommodating cavity 11 and a valve body 20 fixedly arranged on the bottom end surface of the cylinder housing 10 and having a cavity 21 A cylinder piston 30 and an adjusting rod 40 fixedly connected to the bottom end of the cylinder piston 30 are movably arranged in the accommodation chamber 11 of the cylinder housing 10 , and an air pipe communicating with the accommodation chamber 11 is provided on the cylinder housing 10 ...
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The invention discloses a pressure reduction valve controlled through compressed gas. The pressure reduction valve comprises a cylinder shell with a containing cavity, and a valve body with a cavity. A cylinder piston and an adjustment rod fixedly connected to the bottom end of the cylinder piston are movably arranged in the containing cavity. A gas pipe connector is arranged on the cylinder shell. A glue inlet and a glue outlet are formed in the side wall of the valve body. The bottom end of the adjustment rod is fixedly connected with a wedge-shaped adjustment block. The wedge-shaped adjustment block comprises a triangular part and a rectangular part fixedly connected to the bottom end of the triangular part. An inclined edge is arranged at one end of the triangular part. A glue passing through hole penetrating the triangular part is formed in the lower portion of the inclined edge. A glue inlet plate is fixedly arranged on the glue inlet. A glue inlet through hole is formed in the glue inlet plate. One side of the rectangular part is tightly attached to the glue passing plate and slides up and down on the glue passing plate. The portion, in the upper portion in the cavity of the valve body, of the adjustment rod is provided with a protruding part. By means of the pressure reduction valve, the flow of liquid glue flowing to the glue outlet from the glue inlet and the pressure of the glue outlet can be accurately controlled.
Description
Technical field: [0001] The invention relates to the technical field of injection molding machinery, in particular to a pressure reducing valve for precise control of compressed gas. Background technique: [0002] The pressure reducing valve is a valve that reduces the inlet pressure to a certain outlet pressure by adjusting, and relies on the energy of the medium itself to automatically maintain the outlet pressure. In the injection molding of liquid silicone material, due to the high viscosity of liquid silicone, the conventional formula for calculating hydraulic pressure is not effective for it. The flow rate of liquid silicone flowing from the inlet end to the outlet end of the pressure reducing valve and the pressure at the outlet end are often not accurate. The control of the pressure reducing valve affects the performance of the pressure reducing valve, thus limiting the application range of the pressure reducing valve. Invention content: [0003] The object of the...
Claims
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IPC IPC(8): F16K31/122
CPCF16K31/1226
Inventor 黄文成
Owner 南通汇恒液压设备有限公司