Vertical-type sedimentation centrifuge for continuous unloading

Abstract

The invention relates to a vertical-type sedimentation centrifuge for continuous unloading. The vertical-type sedimentation centrifuge comprises a motor, a barrate, a spiral stoker, a feeding pipe, a slag outlet, a liquid outlet, an overflow opening, an engine base and a centrifuge shell. The feeding pipe is communicated with an allocating chamber in the spiral stoker. A discharging hole communicated with the barrate cavity of the barrate is formed in the spiral stoker. The centrifuge shell is installed on the engine body. An output shaft of the motor installed on the centrifuge shell is connected with an input shaft on the spiral stoker. An input shaft and an output shaft arranged at one end of the barrate are rotatably connected, and the outer end of the barrate is rotatbaly connected with the centrifuge shell and the spiral stoke respectively. A differential speed change mechanism is arranged between the input shaft on the spiral stoker and the output shaft on the barrate. The vertical-type sedimentation centrifuge for continuous unloading has the advantages that a speed-difference ratio between the barrate and the spiral stoker is smaller and very constant, the control part of the centrifuge is easy, the structure of the centrifuge can be compact, the size is decreased, and manufacturing is easy.

Description

Technical field: [0001] The invention relates to a solid-liquid separation device, in particular to a vertical continuous discharge sedimentation centrifuge. Background technique: [0002] Centrifuge is a solid-liquid separation equipment that uses centrifugal force to separate solid particles from liquid in suspension. It is mainly used in chemical, mineral processing, petroleum, pharmaceutical, food and other industries, as well as odorous sewage treatment. When the suspension is separated by sedimentation. At present, the conventional centrifuge is mainly a horizontal screw discharge sedimentation centrifuge, which mainly includes a frame, a drum, a screw pusher, a differential, a feeding pipe, a main motor, an auxiliary motor and two The frequency converter that controls the speed of the main motor and the auxiliary motor respectively, the rotating shafts at both ends of the drum are respectively supported on the frame, the input shaft of the drum is connected with the ...

AI Technical Summary

Problems solved by technology

[0004] After many years of use, it has been found that the horizontal screw discharge decanter centrifuge with the above structure has a defect, that is, the drum and the screw pusher in the prior art horizontal screw discharge decanter centrifuge are connected by a differential , and use the main and auxiliary motors to control the speed of the drum and the screw propeller respectively through the frequency converter to achieve the speed difference between them. Factors such as the amount of material and fluctuations will affect the load of the screw propeller, so that the adjusted speed difference will change, causing the control part of the centrifuge to continuously detect, adjust, and compensate to ensure the stability of the speed difference. The control part of the centrifuge becomes very complicated

For this reason, people also can simply use the speed changer to complete the speed difference between the drum and the screw pusher, but the speed difference is not satisfactory. According to some reports, a speed changer of 1 / 125 can be made at present, that is, It is said that a speed difference of 24 rpm can be obtained at a speed of 3000 rpm. We know that the smaller the speed difference, the less the moisture content of the solid material. Some centrifuges even require a speed difference lower than 7 rpm. Such a transmission is difficult to manufacture. The reason is that in order to achieve a small speed difference, the number of gear teeth in the transmission is required to be relatively large, and under a certain gear modulus, the outer diameter of the gear will increase. If it is made very large, it will not only increase the volume of the transmission and the centrifuge, but also bring some troubles to the production of the centrifuge.

[0005] In addition, the drum and the screw pusher in the prior art horizontal screw unloading decanter centrifuge are all checked and processed for dynamic balance without material. When the fluid material is added, due to the gravity The dynamic balance of the drum and the screw pusher is easily affected or even resonates

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