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safety throttle valve

A throttling valve and safety technology, applied in the direction of safety valve, balance valve, valve device, etc., can solve the problem of low accuracy of flow and pressure adjustment, and achieve the effect of compact structure, stable flow adjustment and small pressure adjustment deviation.

Active Publication Date: 2017-03-15
JIANGSU HENGLI HYDRAULIC TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In some occasions in the hydraulic field, both the flow and the pressure need to be controlled in the flow channel, but the current general-purpose safety valve and throttle valve are both separate valve body structures, which require two installation holes, and the setting accuracy of the flow and pressure is not good. high

Method used

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Embodiment Construction

[0016] The present invention will now be described in further detail with reference to the drawings. These drawings are all simplified schematic diagrams, which merely illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

[0017] Such as figure 1 As shown, a safety throttle valve of the present invention includes a valve body 1, a cone valve core 2 and a spool valve core 4. The valve body 1 has a first cavity 1-R1 and a second cavity 1-R2. The spool 2 is arranged in the first cavity 1-R1, the spool valve spool 4 is arranged in the second cavity 1-R2, and the poppet spool 2 is used to block and communicate the first cavity 1-R1 and the second cavity. Cavity 1-R2, a spring 3 is arranged between the cone valve core 2 and the inner wall of the valve body 1, and the spring 3 acts on the end of the cone valve core 2 with a large section. The valve body 1 is provided with a radial hole 1- K1, ...

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Abstract

The invention relates to a safety throttle valve comprising a valve body, a taper spool and a slide spool. The valve body is internally provided with a first cavity and a second cavity. The taper spool is arranged inside the first cavity. The slide spool is disposed inside the second cavity. A first spring is disposed between the taper spool and the valve body. The valve body is provided with a first radial hole. The slide spool is internally axially provided with a third cavity and a fourth cavity. The slide spool is provided with a second radial hole and a third radial hole. The second radial hole is communicated with the third cavity. The third radial hole is communicated with the fourth cavity. A damping hole is provided between the third cavity and the fourth cavity. A second spring is disposed inside the second cavity. The first radial hole is connected with an opening T connected with an oil tank. The valve body is provided with an oblique hole; one end of the oblique hole is communicated with the first cavity, and the other end of the oblique hole is communicated with the opening T. The safety throttle valve as functional as a universal safety valve and a universal throttle valve is compact in structure, requires only one mounting hole, is convenient to mount, has small pressure regulation error, is high in pressure regulation precision and allows stable flow regulation.

Description

Technical field [0001] The invention relates to a valve, in particular to a safety throttle valve. Background technique [0002] The ordinary safety valve is closed when the hydraulic system is working normally, and the overflow is opened only when the system pressure is greater than or equal to the setting pressure of the safety valve, which protects the system from overload. The ordinary throttle valve uses the control mechanism to make the spool Move relative to the valve body hole to change the flow area of ​​the valve port to adjust the output flow. [0003] In some occasions in the hydraulic field, it is necessary to control both the flow rate and the pressure in the flow channel. Now the general safety valve and throttle valve are all separate valve body structures, requiring two mounting holes, and the flow and pressure setting accuracy is not high. Summary of the invention [0004] The technical problem to be solved by the present invention is: in order to solve the above...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/04F16K17/30
CPCF16K17/044F16K17/0473F16K17/30
Inventor 汪立平卢强张国良刘红光陈展庄莉
Owner JIANGSU HENGLI HYDRAULIC TECH CO LTD
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