CN2140009Y - Pressure type automatic adjusting valve for degree of vacuum - Google Patents

Abstract

The utility model relates to a pressure type automatic adjusting valve for vacuum degree, comprising a valve body, a valve core and a regulating handle. The utility model makes adjustments through utilizing the pressure difference between the interior and the exterior of a valve cavity and spring force, which drives the valve core to automatically open or close an air inlet so as to ensure pipelines definite vacuum degree. The utility model can be positioned through once adjustment and has the advantages of simple structure and convenient operation.

Description

Pressure type automatic adjusting valve for degree of vacuum

The utility model relates to a kind of pressure type degree of vacuum automatic regulating valve that can regulate degree of vacuum automatically.

The valve of regulating pipeline degree of vacuum at present mostly is manually operated type, needs repeated multiple times ground to regulate, and uses trouble.

The purpose of this utility model is to provide a kind of can once regulate the pressure type degree of vacuum automatic regulating valve that puts in place.

Pressure type degree of vacuum automatic regulating valve of the present utility model comprises valve body, spool and adjustment handle, adjust the inlet end that handle is spun on valve pocket, be processed with the inlet hole that valve pocket can be communicated with atmosphere on it, spool is contained in the valve pocket, pack into the bleeder hole of valve body of one end, the sealing gasket on its other end end face can be shut the inlet hole of adjusting on the handle under spring action, the hole that valve pocket can be communicated with the end of bleeding is arranged, the bleed end and the pipeline connection of valve body on the spool.After the vacuum pump work air in the valve pocket is extracted out, after its vacuum up, barometric pressure overcomes spring force promotes spool, and inlet hole is opened, and after degree of vacuum descended in the valve pocket, spring promoted spool again inlet hole is shut, and realizes regulating automatically.

The utility model has the advantages that and can once adjust to the right place, simple in structure, easy to use.

Fig. 1 is a structural representation of the present utility model.

Embodiment: referring to Fig. 1, pressure type degree of vacuum automatic regulating valve of the present utility model comprises valve body 5, adjust handle 1, spool 4 and spring 3, be processed with valve pocket on the valve body 5, the valve pocket two ends are respectively inlet hole and bleeder hole, bleeder hole is connected with pipeline, spool 4 is a step type, its big end end face is fixed with sealing gasket 2, its small end is wound with spring 3, and be processed with axial bore and the radial hole that interconnects, valve pocket can be communicated with pack into the bleeder hole and with it movingly of valve body 1 of spool 4 small ends with bleeder hole, adjust handle 1 and be processed with fine thread, be spun on the inlet end of valve body 5, being processed with the axial bore and the radial hole that interconnect on it can be communicated with valve pocket with atmosphere.

Claims (1)

1, a kind of pressure type degree of vacuum automatic regulating valve, it is characterized in that comprising valve body 5, spool 4 and adjust handle 1, adjust the inlet end that handle 1 is spun on valve body 5 valve pockets, be processed with the inlet hole that valve pocket can be communicated with atmosphere on it, spool 4 is contained in the valve pocket, pack into the bleeder hole of valve body 5 of one end, sealing gasket 2 on its other end end face can shut the inlet hole of adjusting on the handle 1 under the effect of spring 3, be processed with the hole that valve pocket can be communicated with the end of bleeding on the spool 4, the end of bleeding of valve body 5 is connected on the pipeline.

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