Hazard small concrete pump hydraulic system heat phenomenon

shelly's Avatar


11 Aug, 2015 03:17 AM

Small aggregate concrete pump delivery pressure is to rely on concrete construction equipment through pipes , concrete pump high-pressure hydraulic systems are generally large flow systems. From concrete pumps use the survey found that many types of concrete pumps , the use of about 40min later, the temperature of the hydraulic system up to 60e, using approximately 2h after thermal equilibrium temperature of the hydraulic system can be up to 70e above and concrete pump hydraulic system normal thermal equilibrium temperature should be around 50e. Therefore , there has been Overheat concrete pump hydraulic system that heating problem .

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Hazard concrete pump hydraulic system heat phenomena

Hazard concrete pump hydraulic system heat phenomenon , fever concrete pump hydraulic system , directly affect the normal operation of concrete pumps , heating phenomenon caused harm to , the following main points: the temperature ( 1 ) the working fluid increases, the working fluid the viscosity reduction , leakage of the pump increases, the actual flow of small aggregate concrete pump declined ;

( 2 ) hydraulic systems and components seal deterioration at high temperatures , reducing the elastic deformation capacity, so that the sealing performance degradation or even seal failure diesel mixer for sale, so that leakage increases ;

( 3 ) When the hydraulic spool valve member , the valve body of different materials , the thermal expansion coefficient is not the same , the valve body , which occurs due to thermal expansion between the valve spool stuck phenomenon , resulting concrete pump is not working ;

( 4 ) When the working fluid viscosity decreases, so that the lubricating properties of the working fluid to reduce the wear of hydraulic components accelerated, accelerated wear failure components , shortening the life of the components. To minimize the occurrence of these phenomena , some small aggregate concrete pump after a certain time , to stop , to cool the system , thereby reducing the concrete pump operation rate concrete mixer, the impact of the construction schedule.

Therefore , the system should address the causes of fever , take appropriate measures to control the temperature of the hydraulic system, ensure the normal use of concrete pumps.

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