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Pressure release valve

A pressure relief valve and valve casing technology, applied in the field of pressure relief valves, can solve the problems of increasing the manufacturing cost of coffee machines, high manufacturing cost of electromagnetic valves, complicated control, etc., and achieve the effect of less parts involved, low cost and simple overall structure

Active Publication Date: 2013-06-12
NINGBO AAA GROUP ELECTRIC APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the manufacturing cost of the solenoid valve is high, the control is relatively complicated, and it is easy to be damaged, so the manufacturing cost of the coffee machine is virtually increased.

Method used

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Such as Figure 1~5 Shown is a preferred embodiment of the present invention.

[0024] A pressure relief valve comprising

[0025] A valve casing 1 with an axially penetrating passage 11, the valve casing 1 is composed of a lower casing 13 and a lower casing 14, and the upper casing 13 is detachably connected to the upper part of the lower casing 14 by a buckle connection, that is, the upper part of the lower casing 14. The end face has three elastic hooks 15 arranged at intervals along the circumference and extending upwards. There are three slots 16 matched with the hooks 15 on the peripheral wall of the upper shell 13. The lower ends of the slots 16 are open, and the upper part of the slots 16 has a The hook portion 151 of the elastic hook matches the hole 161, the elastic hook 15 is inserted in the slot 16, and the hook portion 15...

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PUM

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Abstract

The invention relates to a pressure release valve. The pressure release valve is characterized by comprising a valve casing with a channel, a valve seat with a channel, a valve core with a water outlet channel, a valve bush, a first spring, a valve rod for pushing the valve bush to move upward and downward, and a driving locking structure, wherein the side wall of the valve casing is provided with a water inlet; the valve seat is fixed on the lower part of the channel of the valve casing, and the side wall of the valve seat is provided with a connecting channel; the valve bush is positioned in the channel of the valve seat; the first spring is supported between the valve core and the valve bush, the peripheral wall of the upper end of the valve core is in sealing fit with the inner wall of the valve bush in a state of the downward movement of the valve bush, and a gap through which water flow passes is formed between the peripheral wall of the upper end of the valve core and the innerwall of the valve bush in a state of the upward movement of the valve bush; and the driving locking structure is used for driving the valve rod to move upward and downward and keeping the valve rod in a state of pushing the valve bush to move downward. The pressure release valve has a mechanical pressure release structure, the connection and disconnection of the water inlet and the water outlet channel can be controlled only by pushing the valve rod during operation, and the pressure release valve is easy and convenient to operate, has few related components and a simple integral structure, and is low in cost and convenient to assemble.

Description

technical field [0001] The present invention relates to a pressure relief valve. Background technique [0002] After the coffee machine has finished brewing coffee, there is a certain pressure of water remaining in the brewing cavity and the high-pressure water pipeline. In order to ensure the safety of the coffee machine, it is necessary to remove the residual pressure of the water in the brewing cavity. It is realized by a solenoid valve. When the coffee machine is finished brewing, the solenoid valve is opened through program control to discharge the water with a certain pressure. Because the manufacturing cost of the electromagnetic valve is high, the control is relatively complicated, and it is easy to be damaged, thus virtually increasing the manufacturing cost of the coffee machine. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a pressure relief valve to replace the electromagnetic valve used for pressu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47J31/58
Inventor 景昱东
Owner NINGBO AAA GROUP ELECTRIC APPLIANCE
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