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Gun-closing unloading shutdown device of high-pressure cleaning machine

A technology of high-pressure cleaning and shutdown devices, which is applied to spraying devices, liquid spraying devices, cleaning methods and appliances, etc., which can solve problems such as damage to internal parts and affect service life, so as to improve pressure-holding performance, save energy, and ensure service life. Effect

Pending Publication Date: 2020-12-08
JIANGSU JINFEIDA POWER TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The purpose of the invention is to provide a solution to the problem of internal parts damage caused by high pressure in the pump after cleaning the existing machine gun and affect the service life, and improve the usability and reliability of the pump

Method used

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  • Gun-closing unloading shutdown device of high-pressure cleaning machine
  • Gun-closing unloading shutdown device of high-pressure cleaning machine
  • Gun-closing unloading shutdown device of high-pressure cleaning machine

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Embodiment Construction

[0020] The invention will be further described below in conjunction with the accompanying drawings.

[0021] like Figure 1-3 As shown, the present invention discloses a high-pressure cleaning machine gun unloading shutdown device, including a high-pressure water outlet valve 16 provided at the water inlet and water outlet of the plunger pump. The water outlet side of the horizontal channel is provided with a pressure maintaining valve, and the longitudinal channel is provided with a pressure regulating valve and a pressure relief valve in sequence from top to bottom. The pressure relief valve includes a pressure relief ejector rod 36, an overflow seat 32 and a steel ball 31. The bottom of the pressure relief jack 36 communicates with the channel where the water inlet joint 17 is installed. The pressure relief jack 36 is provided with a through hole that communicates with the water inlet. The pressure relief jack 36 is sealed with the channel where the pressure relief valve is...

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Abstract

The invention discloses a gun-closing unloading shutdown device of a high-pressure cleaning machine. The gun-closing unloading shutdown device comprises a high-pressure water outlet valve arranged between a water inlet and a water outlet of a plunger pump, a pressure regulating valve and a pressure retaining valve are sequentially arranged on a channel communicating the water outlet end of the high-pressure water outlet valve with a water outlet connector, and a pressure release valve is arranged in a channel at the lower end of the pressure regulating valve. The pressure release valve comprises a pressure release ejector rod, an overflow seat and a steel ball, the bottom of the pressure release ejector rod is communicates with a channel where the water outlet connector is installed, a through hole communicating with the water inlet is formed in the pressure release ejector rod, and a microswitch device is arranged between the water outlet end of the pressure regulating valve and the water outlet connector and comprises a switch ejector rod for driving a microswitch to be connected and disconnected. The lower side of the switch ejector rod communicates with a water outlet channel of the pressure regulating valve, and the upper side of the switch ejector rod communicates with the channel where the water outlet connector is installed. According to the gun-closing unloading shutdown device, unloading and shutdown can be conducted immediately after gun closing, low pressure maintaining is achieved, restarting can be conducted immediately after gun opening, the non-passing working pressure is adjusted through the pressure regulating valve, the service life of the plunger pump is guaranteed, and the performance is more reliable.

Description

technical field [0001] The invention relates to a plunger pump part of a high-pressure cleaning machine, in particular to an unloading stop device for a high-pressure cleaning machine gun. Background technique [0002] At present, high-pressure cleaners have been widely used in people's lives. The high-pressure water generated by the high-pressure pump is used to strongly wash the surface of objects. It can be used for cleaning cars, gardens, walls and other fields. Therefore, high-pressure cleaning is also considered to be one of the most scientific and environmentally friendly cleaning methods. At present, the high-pressure cleaners used in the market, when the gun is turned off, press the high-pressure water inside the pressure regulating valve of the pump to open the return switch, allowing the high-pressure water to return to the water inlet channel to achieve internal circulation. During the use of this structure, the temperature of the circulating high-pressure water...

Claims

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Application Information

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IPC IPC(8): B05B9/04B05B12/08B08B3/02B08B3/08
CPCB05B9/0413B05B12/085B08B3/02B08B3/08
Inventor 张庆奇谭冬云丁浩王哲张春元姚宏平
Owner JIANGSU JINFEIDA POWER TOOLS
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