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Double-oil seal speed regulating valve

A speed control valve and double oil seal technology, applied in valve details, shaft seals, valve devices, etc., can solve problems such as reduced service life of oil seals, deformation of oil seals, oil leakage of oil seals, etc., to prolong service life and avoid shortening service life , to avoid the effect of leakage

Inactive Publication Date: 2020-06-12
佛山市奥达金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the speed control valve is working, it needs to rotate the valve stem to adjust the flow of the liquid. However, the current speed control valve generally uses an oil seal to adjust the seal between the valve stem and the valve body. The contact is relatively close. After turning the valve stem for a long time, the oil seal will leak due to wear and tear. At the same time, because the oil seal is in a deformed state when it is sealed, the oil seal in the current speed control valve is always in a deformed state. Reduced service life of the oil seal

Method used

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Embodiment Construction

[0021] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

[0022] In the description of the present...

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Abstract

The invention discloses a double-oil seal speed regulating valve. The double-oil seal speed regulating valve comprises a valve body; an oil outlet pipe fixing seat is mounted at one end of the valve body; an oil outlet pipe is fixed to the oil outlet pipe fixing seat; an oil inlet pipe fixing seat is mounted at the other end of the valve body; an oil inlet pipe is mounted in the oil inlet pipe fixing seat; two fixing holes are formed in the side wall of the valve body; the two fixing holes are symmetrical about the geometric center of the valve body; and a valve cover is mounted at the top ofthe valve body. According to the double-oil seal speed regulating valve, the rotating direction of first screw threads is the same as that of third screw threads and fourth screw threads, and the rotating direction of second screw threads is opposite to that of the first screw threads, the third screw threads and the fourth screw threads, namely, when a first oil seal fixing seat extrudes a firstoil seal downwards, the interval between the first oil seal fixing seat and the oil seal supporting seat is shortened, so that the first oil seal deforms under pressure, then the first oil seal is tightly bonded to the interior of a valve cavity, and then a liquid in the speed regulating valve is prevented from leaking from the interval between the valve rod and the valve body.

Description

technical field [0001] The invention relates to the technical field of speed regulating valves, in particular to a speed regulating valve with double oil seals. Background technique [0002] The speed regulating valve is a combined valve composed of a differential pressure reducing valve and a throttle valve connected in series. The throttle valve is used to adjust the passing flow, and the fixed difference pressure reducing valve automatically compensates the influence of load changes, so that the pressure difference before and after the throttle valve is a constant value, eliminating the influence of load changes on the flow. The pressure before and after the throttle valve is led to the right and left ends of the pressure reducing valve core respectively. When the load pressure increases, the hydraulic pressure acting on the left end of the pressure reducing valve core increases, the valve core moves to the right, and the pressure reducing port Increase, the pressure dro...

Claims

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Application Information

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IPC IPC(8): F15B13/02F16K27/00F16K41/06
CPCF15B13/02F16K27/00F16K41/06
Inventor 许文财
Owner 佛山市奥达金属制品有限公司
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