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Constant-pressure opening device

A technology of opening device and positioning device, which is applied in the field of hydraulic control, can solve the problems of large hydraulic loss, increased cost, complex structure, etc., and achieve the effect of low cost, reduced pressure and reasonable structural design

Active Publication Date: 2015-03-18
首安工业消防设备(河北)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For a general hydraulic valve, when the water pressure reaches the set pressure, the water flow will open the valve core and compress the opening spring at the same time. This structure makes the water flow have to lose 20% to 30% of the pressure to keep the opening spring In the compressed state and the valve core is open, in order to ensure that other hydraulic components spray water under the rated working pressure, the water pressure must be increased by 20% to 30% compared with the rated working pressure, so the working pressure of the entire pipe network

Method used

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Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 , figure 2 As shown, the constant pressure opening device provided in this embodiment includes a valve body 1, a sealing valve core 2, an opening and closing spring 3 and a positioning device 4; wherein the upper end of the valve body 1 is provided with a valve inlet 5, and the lower end is provided with a valve outlet 6; The sealing valve core 2 is arranged at the inner port of the valve inlet 5 inside the valve body 1 in a manner that can move up and down, and at least one round hole 12 is formed in the middle part along the radial direction, and at the same time, a round hole 12 is formed in the center of the lower part. Through the central hole 13; the opening and closing spring 3 is located between the sealing valve core 2 and the valve outlet 6 of the valve body 1; the positioning device 4 includes at least two positioning pins 7, at least two positioning springs 8, positioning grooves 9 and pin sleeves 10; wherein a positioning pin 7 with a pin...

Embodiment 2

[0033] Such as image 3 As shown, the difference between the constant pressure opening device provided by this embodiment and the previous embodiment is that the positioning spring 8 is canceled, and the sealing valve core 2 is made of magnetic material, and the positioning pin 17 is made of magnetic material that can generate magnetism with the sealing valve core 2. The gravitational metal is made, and other structures remain unchanged.

[0034] Under normal circumstances, under the support of the valve body 1, the opening and closing spring 3 will press the sealing valve core 2 tightly against the inner port of the valve inlet 5, and at this time, the constant pressure opening device is in the closed state. Since there is no liquid pressure in the valve body 1 , the positioning pin 17 will shrink in the pin sleeve 10 depending on the attraction force between the valve body 1 and the sealing valve core 2 .

[0035] When the liquid pressure in the system connected with this c...

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Abstract

The invention provides a constant-pressure opening device. The device comprises a valve body, a sealing valve element, an opening-closing spring and a positioning device; the sealing valve element is arranged in the valve body; the opening-closing spring is positioned between the sealing valve element and an outlet of the valve body; the positioning device comprises two positioning pins, two positioning springs, two positioning grooves and pin sleeves. According to the constant-pressure opening device, the positioning device is additionally mounted inside and can be used for quickly fixing the sealing valve element after the constant-pressure opening device is opened, and therefore, the loss on hydraulic pressure in a system can be greatly decreased; compared with the constant-pressure opening device, the constant-pressure opening device has the advantages that the economic benefits are increased; in addition, the requirement of hydraulic elements in other hydraulic systems on pressure can be reduced; moreover, the device has the advantages of being reasonable and simple in structural design, and low in cost.

Description

technical field [0001] The invention belongs to the technical field of hydraulic control, in particular to a constant pressure opening device. Background technique [0002] For a general hydraulic valve, when the water pressure reaches the set pressure, the water flow will open the valve core and compress the opening spring at the same time. This structure makes the water flow have to lose 20% to 30% of the pressure to keep the opening spring In the compressed state and the valve core is open, in order to ensure that other hydraulic components spray water under the rated working pressure, the water pressure must be increased by 20% to 30% compared with the rated working pressure, so the working pressure of the entire pipe network and water pump must also be increased by 20% to 30%, thus increasing the cost. [0003] The check valve used in some medium and low pressure control fields is equipped with a valve core and an opening spring inside. There will be a pressure loss o...

Claims

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Application Information

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IPC IPC(8): F16K17/02F16K17/04F16K31/12
CPCF16K17/042F16K17/044F16K17/164
Inventor 易卫斌李伟刚
Owner 首安工业消防设备(河北)有限公司