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Anti-fatigue impact-resistant pressure relief valve and manufacturing method thereof

A pressure reducing valve, shock-resistant technology, applied in valve devices, engine components, mechanical equipment, etc., to achieve the effect of long life and high reliability

Active Publication Date: 2017-11-07
NINGBO HUACHENG VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, no matter what kind of structure the pressure reducing valve in the prior art adopts, it will be affected by the essential properties of the spring. Therefore, the anti-fatigue and impact resistance of the spring itself is particularly important. In the prior art, the essential modification of the material and the surface Shot peening and other methods increase the anti-fatigue and anti-impact performance, but do not improve its anti-fatigue and anti-impact ability under specific working conditions by changing the shape of the material

Method used

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  • Anti-fatigue impact-resistant pressure relief valve and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for manufacturing an anti-fatigue and impact-resistant pressure reducing valve, the pressure reducing valve includes a pressure reducing valve main body 1, a pressure seat 2 matching the pressure reducing valve main body 1 and a limit structure 6, an anti-fatigue and impact-resistant spring 3, a piston rod 4 and buffer device 5, wherein the manufacturing method of the used copper wire of spring 3 comprises the following steps:

[0023] 1) Pre-preparation

[0024] ① Use tin phosphor bronze QSn4-4-4 copper billet as the raw material of copper wire;

[0025] ② Select forging equipment equipped with hydraulic generating device, rotary push device and air cooling device; select vacuum resistance furnace as initial forging heating equipment;

[0026] ③Select four forging hammer heads with 90° forging axes in sequence and supporting hydraulic output device as final forging and clamping tooling; then choose ceramic tooling body with tapered inner hole, shock-absorbing...

Embodiment 2

[0036] The whole is consistent with Example 1, the difference is:

[0037] The manufacturing method of the used copper wire of spring 3 comprises the following steps:

[0038] ①The tin phosphor bronze QSn4-4-4 copper blank is heated through a vacuum resistance furnace to a value higher than its theoretical AC 3 At a temperature of 30°C, keep warm for (20d) min / mm according to the diameter of the copper billet, and then take it out of the furnace, and fix the bottom of the copper billet on the rotary push device;

[0039] ②The forging hammer head linked with the rotary push device is pushed by the hydraulic generating device, and the copper billet is extruded into a forging billet with a nearly square cross-section at a feed rate of about 5% for each deformation and a final deformation ratio of 55% to deform the copper billet. The length of one forging deformation of the blank is one forging cycle. After the last forging in one cycle is completed, the forging hammer head is fi...

Embodiment 3

[0044] The whole is consistent with Example 1, the difference is:

[0045] The manufacturing method of the used copper wire of spring 3 comprises the following steps:

[0046] ①The tin phosphor bronze QSn4-4-4 copper blank is heated through a vacuum resistance furnace to a value higher than its theoretical AC 3 At a temperature of 50°C, keep warm for (22d) min / mm according to the diameter of the copper billet, and then take it out of the furnace, and fix the bottom of the copper billet on the rotary push device;

[0047] ②The forging hammer head linked with the rotary push device is pushed by the hydraulic generating device, and the copper billet is extruded into a forging billet with a nearly square cross-section at a feed rate of about 5% for each deformation and a final deformation ratio of 65% to deform the copper billet. The length of one forging deformation of the blank is one forging cycle. After the last forging in one cycle is completed, the forging hammer head is fixe...

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Abstract

The invention relates to an anti-fatigue impact-resistant pressure relief valve and a manufacturing method thereof. The pressure relief valve comprises a pressure relief valve body, a pressure base, a limiting structure, an anti-fatigue impact-resistant spring, a piston rod and a buffer device, wherein the pressure base and the limiting structure are matched with the pressure relief valve body. The special spring combining the modified intrinsic quality with the enhanced surface and changed material shape and structure is adopted by the anti-fatigue impact-resistant pressure relief valve, so that the safety, the anti-fatigue capacity and impact resistance are greatly improved.

Description

technical field [0001] The invention relates to the field of water control equipment, in particular to an anti-fatigue and impact-resistant pressure reducing valve and a manufacturing method thereof. Background technique [0002] The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to keep the outlet pressure automatically stable. From the point of view of fluid mechanics, the pressure reducing valve is a throttling element whose local resistance can be changed, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of decompression. Then rely on the adjustment of the control and regulation system to balance the fluctuation of the post-valve pressure with the spring force, so that the post-valve pressure remains constant within a cert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/20F16K51/00
CPCB21K1/20F16K51/00
Inventor 王朝阳王晓晓彭兴满葛鹏军王玉堂金昌锡
Owner NINGBO HUACHENG VALVE
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