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Pumping equipment and distribution hydraulic system and heating method thereof

A hydraulic system and pumping equipment technology, applied in the field of viscous material pumping equipment, can solve the problems of high price, hydraulic oil storage, troublesome handling, troublesome operation, etc.

Active Publication Date: 2012-04-18
ZOOMLION HEAVY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the technology to prevent the oil temperature from being too high is relatively mature, but there are still some defects in the measures for the low temperature environment
(1) It is cumbersome to replace different types of hydraulic oils. The compatibility of different types of hydraulic oils needs to be considered. At the same time, the cost of replacing hydraulic oils is also high. It is troublesome to store and handle the replaced hydraulic oils. General price is relatively high
(2) The heater needs a large power supply, which is sometimes difficult for the diesel engine to drive. In addition, the use of the heater to heat sometimes causes the hydraulic oil to deteriorate due to local overheating

Method used

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  • Pumping equipment and distribution hydraulic system and heating method thereof
  • Pumping equipment and distribution hydraulic system and heating method thereof
  • Pumping equipment and distribution hydraulic system and heating method thereof

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings.

[0032] In pumping equipment, the distribution hydraulic system controls and drives the action of the distribution valve. There are many types of distribution valves, such as S-shaped pendulum valves, C-shaped valves, and inclined gate valves. At present, in the pumping equipment, since the distribution valve operates for a very short time, but the operation speed is very fast, it needs to maintain pressure after the operation. The distribution hydraulic system of the pumping equipment generally adopts a pressure maintaining circuit with an accumulator. There are two commonly used pressure-holding circuits in the distribution system, that is, the pressure-holding circuit using constant-pressure pumps and the pressure-holding circuit using constant-pressure pumps.

[0033] figure 1 It is a schematic diagram of a distribution hydraulic syst...

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Abstract

The invention provides a distribution hydraulic system of pumping equipment, which comprises a hydraulic pump, a change valve, a check valve, an accumulator and a pressure control assembly. The distribution hydraulic system comprises a working mode and a heating mode, wherein under the heating mode, the hydraulic pump can drive hydraulic oil to overflow through the pressure control assembly, so that hydraulic energy is converted into heat energy, and then the temperature of the hydraulic oil can be rised by the heat energy. The invention also provides the pumping equipment and a heating method thereof.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to viscous material pumping equipment. Background technique [0002] In modern engineering construction, viscous material pumping equipment is widely used. For example, pumping equipment is often used to pour concrete in the construction field. The same pumping equipment is often used in different regions and seasons, and the ambient temperature varies greatly. Pumping equipment is generally driven by a hydraulic system. When the temperature of the hydraulic medium is too low, the viscosity increases, which makes it difficult to start and inhale the oil pump. When the temperature is too high, the oil is easy to deteriorate, and the efficiency of the hydraulic components decreases. [0003] At present, there are several methods to adapt the hydraulic system to different ambient temperatures: (1) Use the method of changing different types of hydraulic oil to adapt to different amb...

Claims

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Application Information

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IPC IPC(8): F15B21/04F15B21/0427
CPCF04B15/02F15B21/042F15B21/04F15B2211/6343F15B2211/50518F15B2211/5157F15B21/0427
Inventor 李沛林
Owner ZOOMLION HEAVY IND CO LTD
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