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Flow control valve and hydraulic system

A technology of flow regulating valve and spool, which is applied in the direction of fluid pressure actuating device, lift valve, valve details, etc., and can solve the problems such as stuck flow regulating valve spool

Active Publication Date: 2015-12-16
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the objectives of the present invention is to provide a flow regulating valve and a hydraulic system to solve the problem of stuck flow regulating valve spool

Method used

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  • Flow control valve and hydraulic system
  • Flow control valve and hydraulic system
  • Flow control valve and hydraulic system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] see figure 1 , the oil pump flow regulating valve has the performance of preventing the spool 4 from being stuck and running stably for a long time. The flow regulating valve of the oil pump includes: a first magnet 1, a set screw, a second magnet 3, a valve core 4, a valve body 5, a slider 6, a third magnet 14, a fourth magnet 7, a plug 8, and a pressing block 9 , Chute 11, bypass hole 12, oil inlet hole 13.

[0066] Plug 8 is that the outer surface is a taper thread, and its fixing is realized by threaded connection.

[0067] A fixing groove for fixing the first magnet 1 is opened at the bottom of the oil inlet hole 13 . The arrangement of the first magnet 1 can be circular, see Figure 4 ; or circular, square evenly distributed, see Figure 5 .

[0068] The slider 6 is circular, and the slider 6 has three structural forms: the first form is as figure 1 As shown, the latter two are as figure 2 and image 3 , which will be described in detail later. The slide...

Embodiment 2

[0073] see figure 2 , in this embodiment the slider and figure 1 The sliders shown are constructed differently. see figure 2 , In this embodiment, a cylindrical chute 11 with a certain depth and a certain diameter is opened upward from the lower end of the slider 6 . This chute 11 size is determined by the slide bar size on the spool 4. The lower end of the slide block 6 is provided with a ring hole at 7 mm to 10 mm upwards, and the fourth magnet 7 is installed in the ring hole at the lower end of the slide block 6 and is fixed by a pressing block 9 and a set screw 10.

[0074] see figure 2 , in this embodiment, the spool 4 is installed in the following manner: a slender rod protrudes from the top of the straight rod of the spool 4 as a slide rod, the diameter of the slide rod of the spool 4 is 4mm-10mm smaller than the diameter of the main body of the spool 4, and the slide rod The length is determined by the stroke of the spool 4. The top of the main body of the spo...

Embodiment 3

[0077] see image 3 , the slider in this embodiment is the same as that of the above embodiment figure 1 , figure 2 The sliders shown are constructed differently. In this embodiment, a section of slender rod protrudes from the lower end of the slider 6 as a slider. The slide bar is cylindrical, and the size of the slide bar is determined by the chute 11 on the spool 4 . The lower end of the slide block 6 has an annular hole at 8 mm to 13 mm upwards, and the fourth magnet 7 is installed in the annular hole at the lower end of the slide block 6 and is fixed by a pressing block 9 and a set screw 10.

[0078] In this embodiment, the valve core 4 is installed in the following way: the top of the straight rod of the valve core 4 has a cylindrical chute with a depth of 7 mm to 9 mm downward, and the top of the straight rod of the valve core 4 has a circular hole with a depth of 7 mm to 10 mm downward. , the second magnet 3 is built into the ring hole and fixed by the set screw 2...

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Abstract

The invention relates to the mechanical field and discloses a flow control valve and a hydraulic system to solve the problem that a valve element of an existing flow control valve gets stuck. The flow control valve comprises a valve body, a valve element and an anti-locking mechanism, wherein the valve body is provided with a cavity and an oil inlet, and the oil inlet is communicated with the cavity; the valve element can move in the cavity, the effective flow area of the oil inlet can be changed through the valve element, and the anti-locking mechanism can drive the valve element to move away from the oil inlet when the valve element and the valve body get stuck. According to the technical scheme, the anti-locking mechanism is used for pushing the valve element to move away from the oil inlet when foreign matter exists between the valve element and the valve body so that the foreign matter can fall off, the valve element can move normally along with the movement of a sliding block, and then the stuck state of the valve element can be cleared.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a flow regulating valve and a hydraulic system. Background technique [0002] China has entered the era of industrialization, and machinery is widely used. The relative movement between parts in machinery must involve the problems of lubrication and heat transfer. Lubricating oil is usually provided by an oil pump. For different working conditions, the amount of lubricating oil and oil pressure required by the machine are different. For oil pumps, how to provide variable and variable pressure lubricating oil according to different situations is very important. [0003] The commonly used oil pump pressure regulating device now dynamically adjusts the lubricating oil supply amount and oil supply pressure by adjusting the position of the spool by spring force. [0004] The inventor found that at least the following problems exist in the prior art: when there is a foreign object between the ...

Claims

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Application Information

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IPC IPC(8): F16K1/32F16K31/06F15B13/02
CPCF15B13/02F16K1/32F16K31/06
Inventor 黄保乾张治平钟瑞兴蒋楠将彩云谢蓉刘建飞陈玉辉周义张竞
Owner GREE ELECTRIC APPLIANCES INC
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