The maintenance of the mixer driving device The function of the driving device is to drive the rotation of the concrete tank. It consists of a power take-off device, a cardan shaft, a hydraulic pump, a hydraulic motor, a control valve, a hydraulic oil tank and a cooling device. If this part stops working because of a fault, the concrete tank will not be able to turn, which will lead to the scrapping of the concrete in the vehicle, and even cause the concrete of the whole tank to condense in the tank, causing the concrete mixer truck to be scrapped. Therefore, whether the driving device is reliable is a problem that must be highly regarded in use. In order to ensure that the drive is sound and reliable, the following maintenance work should be done:
1. The universal rotating part is a part with frequent faults. Grease should be added on time, and the wear condition should be checked frequently and repaired and replaced in time. The team should have a spare universal shaft assembly to ensure that it can resume work within tens of minutes in the event of a failure.
two. Keep the hydraulic oil clean. The poor working environment of concrete mixer trucks must prevent dirt and cement from entering the hydraulic system. Hydraulic oil should be replaced regularly as required by the user manual. Once the hydraulic oil is found mixed with water or sand during inspection, the hydraulic system must be shut down immediately to replace the hydraulic oil.
three. Ensure that the hydraulic oil cooling device is effective. It is necessary to regularly clean up the hydraulic oil radiator to prevent the radiator from being blocked by the cement, check whether the radiator electric fan is running normally, and prevent the hydraulic oil temperature from exceeding the standard. Hydraulic pressure as long as the hydraulic oil to ensure that the general failure is not much; but different manufacturers, the service life is not the same.
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The series FFB Tow-Piece,Floating Ball Valve 1/2"-6" ANSI Class 150-600,1/2"-2" ANSI Class 900-1500,1/2"-1" ANSI Class 2500 in full and reduce port
Design Features
ZC standard floating ball valves are manufactured in tow pieces bolted body,ball valves could be supplied full or reduced bore,designed for maximum rigidity against pipeline thrust,made from forged components or barstock.
Bolted body constructions allow easy service and maintenance opration on site,Pressure rating is from class ANSI 150 up to ANSI 2500 Lbs.
Valves are usually supplied with lever operator,with gear box or bare stem on customer request. All standard floating ball valves have below features:
- Lock device:valve is equipped iwth an integral locking device to secure line flow.
- Blow-out proof stem:the stem is made separately from the ball with integral T-type round shoulder,which ensures total safety and integrity.
- Anti-Static Design:grounding device are supplied form positive anti-static between ball/stem and body.
- ISO 5211 mount plate:simplifies the installation of actuators with standard connections.
- Emission-free gasket:the primary gaskey is emission free graphite to eliminate leakage.
Fire Safe Design
ZC Ball Valve have acquired API 607 certification,Fire safe is standard desing on all ZC Ball valves,
When fire burned out the primary O-ring and seat insert,the secondary seat fire-safe packing graphite seal,and seat ring & ball metal to metal contact preloaded by spring will minimize the internal process medium leakage.
Standard
Design & Manufacturing Standard:API 6D,ASME B16.34,API 608,BS 5351
Face to face:ASME B16.10,API 6D,DIN 3202,BSEN 558
Flange Connection Size:ASME B16.5,BSEN 1092
Testing and inspection: API598,API6D
Floating Ball Valve
Trunnion Mounted Ball Valves, 2 Stainless Steel Ball Valve, 3 Piece Stainless Steel Ball Valve, High Pressure Stainless Steel Ball Valves
Zhejiang Zhongcheng Valve Co.,Ltd. , http://www.apivalvestar.com