1. What is the working principle of the horizontal centrifuge? A: This kind of centrifuge uses the principle of centrifugal sedimentation to separate the suspension, and the liquid phase overflows through the overflow hole at the big end of the drum, and is continuously circulated, so as to achieve the purpose of continuous separation. 2. What are the reasons for the loud noise when the horizontal centrifuge is running? A: The horizontal centrifuge is noisy during operation, which may be caused by the destruction of the balance of the machine, or the damage of the bearing, or the looseness of the parts in the centrifuge. 3. After the improvement of the horizontal centrifuge, what benefits will it generally bring? Answer: The improvement and effect of the horizontal centrifuge are as follows: the differential in the machine is removed, and the slip between the drum and the screw conveyor is controlled by the frequency converter, which can simplify the structure of the machine and realize stepless speed regulation. Reduce the occurrence of failures and make maintenance more convenient. http://www.tongjiangmac.com/

(1) Inspection and test before operation After the centrifuge is installed, the pre-operation inspection, the idling test and the load test should be carried out in sequence, and the production operation can be carried out only after the corresponding requirements are met. Before operation should check: 1. Whether the parts are installed correctly, and the fasteners must not be loose; 2. Sufficient grease should be added to each lubricating part; 3. There is no abnormality in the casing and the drum, and the drum should be turned by hand, and the rotation should be flexible and free of friction; 4. The braking device is flexible and reliable; 5. Instantly start the motor, and the drum rotates without any abnormality. Special attention should be paid to the rotation direction of the drum should be consistent with the direction indicated by the arrow on the sign, and it is strictly forbidden to run in the opposite direction. The dry running test can further check whether there is abnormal vibration and noise, and whether the electrical installation is correct; the load running test can determine the operating parameters of production operation. http://www.tongjiangmac.com/

1. Pay attention to the following matters when installing the centrifuge: 1.1 The centrifuge must be hoisted through the four hoisting frames on the base, and hooked with a strong enough wire rope, and the centrifuge can be lifted only when the centrifuge is in a horizontal state. 1.2 Centrifuge, motor and other components are installed on the base, and 11 shock absorbers are installed under the base, so the centrifuge can be freely placed on the cement foundation or floor, but a certain height should be ensured to facilitate drainage and unloading . 1.3 When the centrifuge is installed on the floor, the reinforced concrete of the floor should have sufficient strength to prevent it from being transmitted or cracked by the centrifuge. 1.4 After the centrifuge is placed on the foundation, flexible connections should be adopted between each interface and the outside world, so as to prevent the vibration of the centrifuge from being transmitted to the pipeline, and 3~5mm amplitude compensation must be considered at the inlet and outlet of the liquid phase. 1.5 The tee joint on the feeding port of the centrifuge can be connected to water or other washing solvents to flush the centrifuge. 2. Debugging of the centrifuge: After the centrifuge is installed, it can be powered on and debugged when it is empty. 2.1 Inspection before operation 2.1.1 Check the solid and secret sealing of the exposed bolts of the centrifuge; 2.1.2 Check the tightness of the V-belt, it is advisable to press down 1.5-3.5mm; 2.1.3 Before starting, the oil level of the oil mark should be checked, and it should not be lower than the bottom line of the oil mark; 2.1.4 Several precautions for inverter setting and wiring: before trial operation, please fully check whether the wiring position is correct, especially the input wire and output wire should not be connected incorrectly, otherwise the inverter will be burned; frequency upper limit setting 50 Hz; the setting of the acceleration time is greater than 180 seconds; the setting of the deceleration time is greater than 300 seconds. 2.2 No-load debugging 2.2.1 Start the bowl at low speed, check the rotation of the centrifuge, rotate clockwise in front of the door of the centrifuge, and it is strictly forbidden to reverse. 2.2.2 After the rotation is correct, the centrifuge is adjusted by frequency conversion, and the drum is slowly and evenly increased to the rated speed, and the speed-up time is not less than 3 minutes to ensure that the centrifuge starts smoothly. 2.2.3 Check the operation of the centrifuge. If there is large vibration or rubbing, noise, etc., it should be stopped immediately, check the cause, and restart it after troubleshooting. 2.2.4 The no-load current of the centrifuge is not more than 12A, and the voltage is not less than 365V. 2.2.5 Check that the temperature rise of the two main bearings is not greater than 35°C during operation, and the temperature rise of the differential housing after shutdown is not greater than 35°C. 2.2.6 After using the new belt for 1 to 2 days, the tightness of the belt should be readjusted. 2.2.7 Check the oil return oil mark of the main bearing, and observe whether there is oil spraying out. 2.3 Load test 2.3.1 After the empty vehicle test, carry out the load test, run it with clean water for 10 to 15 minutes, and check the sealing parts for no leakage. 2.3.2 The feeding should be uniform, and the feeding pump or valve should be gradually opened from small to large to the rated process flow. It is forbidden to open the valve suddenly, which will cause material blocking in the drum to damage the centrifuge. 2.3.3 Monitor the current of the inverter when feeding, pay attention to the maximum working current of the load is not more than 42A, the voltage is not less than 365V, and the maximum current is not more than 18A in general use. 2.3.4 When the feed temperature is at room temperature, the temperature rise of the two main bearing shells is not more than 40℃, and the load test can be operated normally if the load test meets the requirements. 2.4 The normal operation of the centrifuge 2.4.1 When the machine is turned on, the speed is evenly increased to the rated speed, and the speed-up time is not less than 3 minutes. 2.4.2 After running empty for 2-5 minutes, clean with clean water or cleaning solution for 2-5 minutes, and close the cleaning valve. 2.4.3 Feed smoothly and evenly, control the working current not more than 15A, and the voltage not less than 365V (do not open the feeding valve suddenly). 2.4.4 After the work is over, first close the feed valve, then open the cleaning water or cleaning solution, and stop after 30 minutes of cleaning. 2.4.5 Do not pass cleaning fluid after shutdown to prevent cleaning fluid from entering the upper bearing. 2.4.6 Conveying method of solid phase and separation liquid: The solid phase can be transported by any one of screw conveyor, belt conveyor, trolley carrying, and manual shovel transportation. The separation filtrate can be discharged through the side flange and through the pipeline or open ditch. , It must be pointed out that the pipeline must be unblocked to prevent the separation liquid from flooding the drum, and the diameter of the pipeline must be greater than 225mm. http://www.tongjiangmac.com/

Question 1: What is the reason for the intermittent vibration of the centrifuge? The reasons for the intermittent vibration of the centrifuge are as follows: (1) Check the transmission part of the centrifuge, mainly the tolerance of the bearing, the bearing end of the main shaft, and the tolerance of the bearing section of the bearing seat, which may be the problem. (2) There is a problem with the balance weight of the drum, or the filter cloth filter bag is damaged. (3) When the centrifuge is installed, its levelness is not good. Question 2: What is the speed of the centrifuge calculated based on? The centrifugal force of the centrifuge mainly depends on the two methods of the radius of rotation and the speed of rotation. It also has a calculation formula, which is: Centrifugal force = 1.118 × 10 to the negative 5th power × rotational speed to the second power × centrifugal force Therefore, we can infer the rotational speed according to this formula, and its unit is rpm, and the unit of rotation radius is centimeters.