CN106422441A - Improved rake type concentrating and settling system - Google Patents

Abstract

An improved rake-type thickening and settling system, including a settling tank, a scraper device, a walking device, and a feeding device. The scraper device includes a connecting steel frame, a scraper assembly, a submersible pump, and a pressure pipe assembly. The scraper It is a rectangular plate with a sealed cavity inside. The pressure pipe assembly includes a main pipe, a branch pipe, and a short water outlet pipe. One end of the main pipe is connected to the water outlet of the submersible pump, the other end of the main pipe is connected to one end of the branch pipe, and the other end of the branch pipe is One end communicates with the sealed cavity inside the scraper. In the present invention, the scraper is set as a rectangular plate with a sealed cavity inside. The pressure pipe assembly includes a main pipe, a branch pipe, and a short water outlet pipe. The submersible pump pumps the water along the The main pipe and the branch pipe are driven into the sealed cavity of the scraper, and then the water is sprayed out from the short outlet pipe, so that the water sprayed from the short outlet pipe can blow the sediment that has settled to a floating state, and then the water is sprayed by the scraper. It is scraped into the material discharge channel and discharged.

Description

Improved Rake Thickening and Settling System

technical field

The invention relates to the technical field of coal mine washing and settling equipment, in particular to an improved rake-type thickening and settling system.

Background technique

At present, the large-scale solid-liquid separation and dehydration equipment used in ore washing plants and coal preparation plants is thickeners. This thickener adopts the principle of fixed sedimentation to discharge and collect the solids or particles that have settled to the bottom of the pool. The problem with this kind of settling tank is that when the volume of the tank is large, the solid particles settle faster, while the scraper scraper rotates at a slower speed, which causes the accident of "raking", that is, the sedimentation and accumulation of solid particles At the bottom of the pool, the scraper cannot scrape the accumulated solid particles. At this time, the scraper not only cannot scrape and collect the solid particles, but also makes the driving of the scraper and the resistance of the sediment form an impact, resulting in the driving of the scraper are damaged, and these settled solid particles need to be cleaned manually, making the operation more difficult.

Contents of the invention

It is necessary to propose an improved rake-type thickening and settling system that can blow the settled sediment to a floating state, and then be scraped and collected by the scraper.

An improved rake-type thickening and settling system, including a settling tank, a scraper device, a walking device, and a feeding device. The settling tank is a circular container with an open top. The settling tank includes a bottom, an inner wall, an outer wall, and The central support device at the center of the pool bottom, the bottom of the pool is a horizontal bottom surface, and a material discharge channel is opened along the radial direction at the bottom of the pool, and the height of the inner side wall is lower than the height of the outer side wall, so that the inner side wall and the outer side wall A drainage groove is formed between them, and a water outlet is opened on the outer wall. The central support device is fixed in the center of the bottom of the pool along the vertical direction, and the scraper device is connected between the central support device and the outer wall of the sedimentation tank. , the scraper device includes a connecting steel frame, a scraper assembly, a submersible pump, and a pressure pipe assembly. One end of the connecting steel frame is connected to the central support device and can rotate around the central support device. The other end of the connecting steel frame is connected to the central support device. The end face of the outer side wall of the settling tank is overlapped and can move relative to the end face of the outer side wall. The scraper assembly is arranged at the bottom of the connecting steel frame, and the scraper assembly includes several adjacently arranged scrapers. The scraper is A rectangular plate with a sealed cavity is arranged inside, and several scrapers are arranged in sequence along the radial direction of the pool bottom to form a scraper assembly. The bottom of the scraper does not contact the bottom of the pool, and the submersible pump is fixed on the connecting steel frame Above, the water outlet end of the submersible pump is connected to the pressure pipe assembly. The pressure pipe assembly includes a main pipe, a branch pipe, and a short water outlet pipe. One end of the main pipe is connected to the water outlet end of the submersible pump, and the other end of the main pipe is connected to one end of the branch pipe. The other end of the tube communicates with the sealed cavity inside the scraper, and a through hole is opened at the lower end of the front side wall of the scraper, and the short outlet pipe is fixedly connected with the through hole, so that the short outlet pipe and the scraper are sealed The cavity is connected, and the walking device includes a walking drive assembly and a rubber wheel, and the walking drive assembly is fixedly arranged at one end of the connecting steel frame close to the outer wall of the settlement tank, and the rubber wheel is in transmission connection with the walking drive assembly, The rubber wheel is supported between the connecting steel frame and the end face of the outer wall to drive the rubber wheel to roll through the walking drive assembly, and then the rolling rubber wheel drives the connecting steel frame to crawl along the end face of the outer wall. The feeding device includes an upper Material inclined pipe and flocculation mixed solution storage tank, one end of the feeding inclined pipe is used to input the water-coal slurry mixture, and the other end of the feeding inclined pipe is connected with the central support device to transfer the water-coal slime mixture in the feeding inclined pipe Unloaded from the central support device into the settling tank, the flocculation mixed solution storage tank is used to store the flocculant mixture, the flocculation mixed solution storage tank is arranged at one end of the feeding inclined tube, and communicated with the inside of the feeding inclined tube, so as to The flocculant mixture is added into the feeding inclined tube.

Preferably, the material discharge channel is an inclined channel, so that the coal slime mixture with a heavier specific gravity flows out along the inclined channel, and a slurry pump is connected to the end of the material discharge channel to suck the coal slime mixture through the slurry pump The material inlet of the slurry pump is connected to one end of the circular tube channel, the other end of the circular tube channel is connected to the small end of the umbrella joint, and the large end of the umbrella joint is connected to the end of the material discharge channel to pass through the umbrella. The shaped joint increases the pressure of the material from the material discharge channel into the slurry pump.

Preferably, the bottom surface of the drainage groove is inclined from an end far away from the water outlet to an end close to the water outlet.

Preferably, the central support device includes a support pier, an outer barrel, a swirl motor, and a propeller, the support pier is a cylinder fixed at the center of the pool bottom, the outer barrel is a hollow cylindrical shell, and the lower end of the outer barrel The fixed sleeve is fixed on the support pier, and the top of the upper end of the outer barrel is provided with a feeding port to connect with the inclined feeding pipe. The swirl motor is fixed inside the outer barrel, and the propeller is arranged under the swirl motor, and is connected with the swirl flow motor. The output end of the motor is connected, and several discharge windows are provided on the side wall of the outer barrel facing the propeller, so that the water-coal slime mixture entering from the feed port is thrown out from the discharge window.

Preferably, the connecting steel frame includes a crossbeam, a sleeve fixedly connected to the crossbeam is arranged at one end of the crossbeam, and a groove for embedding the sleeve is provided on the side wall of the upper end of the outer barrel of the central support device, the The sleeve is sleeved in the groove, so that the beam drives the sleeve to rotate around the groove.

Preferably, a walking ground wheel is provided at the bottom end of the connecting steel frame, the walking ground wheel is arranged behind the scraper, and the walking ground wheel is arranged at a position of 1/2 length of the connecting steel frame.

Preferably, the short water outlet pipe is obliquely installed on the front side wall of the scraper, so that the water flow blown out of the short water outlet pipe obliquely blows on the bottom of the pool, thereby fully agitating the coal slime that has settled on the bottom of the pool.

Preferably, a connector is provided at the end of the short water outlet pipe, the connector is detachably connected to the short water outlet pipe, and the end of the connector is a duckbill-shaped flat mouth to increase the pressure of the water outlet.

Preferably, a flow valve is provided on the branch pipe connected to each scraper, and the pressure of the water entering the sealed cavity of the scraper is controlled by adjusting the flow valve.

Preferably, the travel drive assembly includes a travel motor, a drive gear set, and a transmission bearing that are sequentially connected by transmission, the transmission bearing is connected to the rubber wheel, the travel motor is a variable speed motor, and the travel device also includes a Connect the controller, display, timer and wheeled rangefinder on the steel frame, the controller is connected with the wheeled rangefinder, display, timer and walking motor, and the wheeled rangefinder will measure the obtained The distance information is sent to the controller, and the timer sends the recorded time information to the controller, and the controller processes the distance information and time information to obtain real-time speed information, and sends it to the display, and is displayed by the display, and the controller also Compare the real-time speed information with the preset speed information in the controller, and adjust the speed of the walking motor according to the comparison result. When the real-time speed is greater than the preset speed, the controller adjusts the speed of the walking motor to slow down. If the real-time speed is less than the preset speed, the controller will adjust the speed of the walking motor to become faster, thereby adjusting the walking speed of the rubber wheel. The rollers of the rangefinder are placed on the end face of the outer wall, and an elastic connecting piece is set between the connecting arm of the wheeled rangefinder and the connecting steel frame, so that the wheeled rangefinder can be moved by the shrinkage force of the elastic connecting piece The rollers of the wheel are closely attached to the end surface of the outer wall to avoid inaccurate measurement caused by the rollers of the wheeled rangefinder idling or not in contact with the end surface of the outer wall.

In the present invention, the scraper is set as a rectangular plate with a sealed cavity inside, and the pressure pipe assembly includes a main pipe, a branch pipe, and a short water outlet pipe, and the submersible pump drives water into the sealed cavity of the scraper along the main pipe and the branch pipe. In the cavity, the water is sprayed out from the short water outlet pipe, so that the water sprayed out from the short water outlet pipe can blow the sediment that has settled to a floating state, and then be scraped by the scraper to the material discharge channel, and be discharged out.

Description of drawings

Figure 1 is a schematic structural view of the improved rake-type thickening and settling system.

Fig. 2 is a front view of the improved rake type thickening and settling system.

Fig. 3 is a top view of the improved rake type thickening and settling system.

Fig. 4 is a sectional view along A-A of Fig. 3 .

Fig. 5 is a partially enlarged view showing the central support device in Fig. 4 .

Fig. 6 is a partially enlarged view showing the scraper device in Fig. 1 .

Fig. 7 is a partially enlarged view of the short water outlet pipe shown in Fig. 6 .

Fig. 8 is a partially enlarged view of the walking device in Fig. 4 .

In the figure: settling tank 10, pool bottom 11, material discharge channel 111, water outlet 112, inner side wall 12, outer side wall 13, central support device 14, support pier 141, outer barrel 142, discharge window 1421, groove 1422 , swirl motor 143, propeller 144, slurry pump 15, circular pipe channel 151, umbrella joint 152, scraper device 20, connecting steel frame 21, sleeve 211, walking ground wheel 212, scraper 22, submersible pump 23 , pressure pipe assembly 24, main pipe 241, branch pipe 242, short water outlet pipe 243, connector 2431, traveling device 30, traveling motor 31, driving gear set 32, transmission bearing 33, rubber wheels 34, wheel distance meter 35, Extension spring 36, feeding device 40, inclined feeding pipe 41, flocculation mixed liquid storage tank 42.

detailed description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

Referring to Fig. 1 to Fig. 8, the embodiment of the present invention provides an improved rake-type thickening and settling system, which includes a settling tank 10, a scraper device 20, a walking device 30, and a feeding device 40, and the settling tank 10 is a circle with an open top. describe the container.

The settling tank 10 includes a bottom 11, an inner side wall 12, an outer side wall 13, and a central support device 14 arranged at the center of the bottom 11 of the pool. The bottom 11 of the pool is a horizontal bottom surface, and a material discharge channel 111 is opened along the radial direction at the bottom of the pool 11. The height of the inner side wall 12 is lower than the height of the outer side wall 13, so that a drainage groove is formed between the inner side wall 12 and the outer side wall 13, and a water outlet 112 is opened on the outer side wall 13, and the central support device 14 is fixed on the bottom of the pool along the vertical direction 11, the scraper device 20 is connected between the central support device 14 and the outer wall 13 of the settling tank 10.

The scraper device 20 includes a connecting steel frame 21, a scraper assembly, a submersible pump 23, and a pressure pipe assembly 24. One end of the connecting steel frame 21 is connected to the central support device 14 and can rotate around the central support device 14. The other end is overlapped with the end face of the outer wall 13 of the settling tank 10, and can move relative to the end face of the outer wall 13. The scraper assembly is arranged at the bottom of the connecting steel frame 21, and the scraper assembly includes several adjacent scraper plates 22 , the scraper 22 is a rectangular plate with a sealed cavity inside, and several scrapers 22 are arranged in sequence along the radial direction of the pool bottom 11 to form a scraper assembly. The bottom of the scraper 22 does not contact the pool bottom 11, and the submersible pump 23 Fixedly arranged on the connecting steel frame 21 , the outlet end of the submersible pump 23 is connected to the pressure pipe assembly 24 .

The pressure pipe assembly 24 includes a main pipe 241, a branch pipe 242, and a short water outlet pipe 243. One end of the main pipe 241 is connected to the water outlet of the submersible pump 23, the other end of the main pipe 241 is connected to one end of the branch pipe 242, and the other end of the branch pipe 242 is connected to the scraper. The sealed cavity inside 22 is connected, and a through hole is offered at the lower end of the front side wall of the scraper 22, and the short outlet pipe 243 is fixedly connected with the through hole, so that the short outlet pipe 243 communicates with the sealed cavity of the scraper 22.

The walking device 30 includes a walking drive assembly and a rubber wheel 34. The walking drive assembly is fixedly arranged at one end of the connecting steel frame 21 close to the outer wall 13 of the sedimentation tank 10. The rubber wheel 34 is in transmission connection with the walking drive assembly. The rubber wheel 34 is supported on the connection Between the steel frame 21 and the end face of the outer wall 13, the rubber wheel 34 is driven to roll by the walking drive assembly, and then the rolling rubber wheel 34 drives the connecting steel frame 21 to crawl along the end face of the outer wall 13.

Feeding device 40 comprises feeding inclined pipe 41 and flocculation mixed solution storage tank 42, and one end of feeding inclined pipe 41 is used for inputting water-coal slime mixture, and the other end of feeding inclined pipe 41 is communicated with central support device 14, to The water and coal slime mixture in the feeding inclined pipe 41 is discharged from the central support device 14 into the settling tank 10, and the flocculation mixed liquid storage tank 42 is used to store the flocculant mixture, and the flocculation mixed liquid storage tank 42 is arranged on the feeding inclined pipe 41 and communicate with the inside of the feeding inclined pipe 41 to add the flocculant mixture into the feeding inclined pipe 41.

In the present invention, the scraper 22 is set as a rectangular plate with an independent internal sealed cavity, and then connected to the submersible pump 23 through the main pipe 241 and the branch pipe 242, and the water in the upper layer of the settling tank 10 is driven into the sealed cavity by the submersible pump 23. In the cavity, water with pressure is sprayed out from the short water outlet pipe 243, and each scraper 22 is a single body, so that when it is connected with the main pipe 241 and the branch pipe 242, due to the small cavity volume, it can ensure the Seal the pressure in the cavity, so that the water sprayed from the short water outlet pipe 243 has sufficient pressure, and the sediment at the bottom of the pool 11 can be blown to a floating state.

Further, the material unloading channel 111 is an inclined channel, so that the heavier coal slime mixture flows out along the inclined channel, and the end of the material unloading channel 111 is connected with a slurry pump 15, so that the coal slime is discharged by the slurry pump 15. The mixture is pumped and discharged, the feed inlet of the slurry pump 15 is connected to one end of the circular tube channel 151, the other end of the circular tube channel 151 is connected to the small end of the umbrella joint 152, and the large end of the umbrella joint 152 is connected to the material discharge channel 111 to increase the pressure of the material entering the slurry pump 15 from the material discharge passage 111 through the umbrella joint 152 .

Further, the bottom surface of the drainage groove is inclined from an end away from the water outlet 112 to an end close to the water outlet 112 . Under the action of the flocculant and its own gravity, the coal slime mixture quickly settles to the bottom of the pool, while the water overflows from between the inner wall 12 and the outer wall 13, and flows down the water outlet 112 along the gutter.

Referring to Fig. 1, Fig. 4 and Fig. 5, further, the central support device 14 includes a support pier 141, an outer barrel 142, a swirl motor 143, and a propeller 144. The support pier 141 is a cylinder fixed at the center of the pool bottom 11, and the outer barrel 142 It is a hollow cylindrical shell, the lower end of the outer barrel 142 is fixedly sleeved on the supporting pier 141, and the top of the upper end of the outer barrel 142 is provided with a feeding port to connect with the feeding inclined pipe 41, and the swirl motor 143 is fixedly arranged on the outer barrel 142 Inside, the propeller 144 is arranged under the swirl motor 143, and is connected with the output end of the swirl motor 143, and a number of discharge windows 1421 are opened on the side wall of the outer barrel 142 facing the propeller 144, so that the material from the feeding The water-coal slime mixture that enters from the outlet is thrown out from the discharge window 1421. At the same time, the rotating propeller 144 further stirs the water-coal slime mixture and the flocculant mixture evenly.

Further, the connecting steel frame 21 includes a crossbeam, a sleeve 211 fixedly connected with the crossbeam is arranged at one end of the crossbeam, and a groove 1422 for inserting the sleeve 211 is opened on the side wall of the outer barrel 142 upper end of the central support device 14, and the sleeve The cylinder 211 is sleeved in the groove 1422 so that the beam drives the sleeve 211 to rotate around the groove 1422 .

Referring to Fig. 6 and Fig. 7, further, a walking ground wheel 212 is set at the bottom end of the connecting steel frame 21, the walking ground wheel 212 is set behind the scraper 22, and the walking ground wheel 212 is set at 1/2 the length of the connecting steel frame 21 s position. Because the connecting steel frame 21 is supported above the settling tank 10 overhead by the outer barrel 142 of the central support device 14 and the outer side wall 13 of the settling tank 10, when the diameter of the settling tank 10 is added, for example, when more than 15 meters, the connection The steel frame 21 and other parts on it are heavy in weight, and the resistance in the settling tank 10 makes the central support device 14 bear a relatively large weight. The end surfaces of the triangular shape are formed so as to share the weight borne on the central support device 14 .

Further, the short water outlet pipe 243 is obliquely installed on the front side wall of the scraper 22, so that the water flow blown out of the short water outlet pipe 243 is obliquely blown on the bottom 11 of the pool, thereby fully agitating the coal slime that has settled on the bottom 11 of the pool.

Further, a connector 2431 is provided at the end of the short water outlet pipe 243. The connector 2431 is detachably connected to the short outlet pipe 243. When the connector 2431 is blocked, the connector 2431 can be directly disassembled and replaced. The operation is more convenient and quick. The connector 2431 The end of the duckbill flat mouth, in order to increase the pressure of the water.

Further, a flow valve is provided on the branch pipe 242 connected to each scraper 22 , and the pressure of the water entering the sealed cavity of the scraper 22 is controlled by adjusting the flow valve. When the sedimentation speed in the settling tank 10 is fast, the flow valve can be adjusted to increase the pressure of the water in the outlet short pipe 243 .

Referring to 8, further, the travel drive assembly includes a travel motor 31, a drive gear set 32, and a transmission bearing 33 that are sequentially connected by transmission. The transmission bearing 33 is connected to the rubber wheel 34. The travel motor 31 is a variable speed motor. Controller, display, timer and wheeled distance meter 35 on the steel frame 21, controller is connected with wheeled distance meter 35, display, timer and travel motor 31.

The wheel range finder 35 sends the measured distance information to the controller, the timer sends the recorded time information to the controller, and the controller processes the distance information and time information to obtain real-time speed information, and sends it to the display, and the The display shows.

The controller also compares the real-time speed information with the preset speed information in the controller, and adjusts the speed of the walking motor 31 according to the comparison result. When the real-time speed is greater than the preset speed, the controller adjusts the speed of the walking motor 31 to change Slow, when the real-time speed is less than the preset speed, then the controller adjusts the speed of the walking motor 31 to become faster. For example, the controller controls the walking motor 31 to work according to different speed gears, so that the purpose of adjusting the speed of the walking motor 31 can be realized, thereby Regulate the walking speed of rubber wheel 34.

The connecting arm of the wheeled rangefinder 35 is fixedly arranged on the connecting steel frame 21 at the front end of the rubber wheel 34, and the roller of the wheeled rangefinder 35 is placed on the end face of the outer wall 13, and the connection arm of the wheeled rangefinder 35 An elastic connecting piece 36 is arranged between the arm and the connecting steel frame 21, so that the roller of the wheeled rangefinder 35 is closely attached to the end surface of the outer wall 13 by the contraction tension of the elastic connecting piece 36, so as to avoid the wheeled rangefinder 35 roller idling or inaccurate measurement caused by not being in contact with the end face of the outer wall 13.

The modules or units in the device of the embodiment of the present invention can be combined, divided and deleted according to actual needs.

What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot limit the scope of rights of the present invention with this. Those of ordinary skill in the art can understand the whole or part of the process of realizing the above-mentioned embodiment, and make according to the claims of the present invention The equivalent changes still belong to the scope covered by the invention.

Claims (10)

1. An improved rake type thickening and settling system is characterized in that: it comprises a settling tank, a scraper device, a walking device, and a feeding device, and the settling tank is a circular container with an open top, and the settling tank includes the bottom of the pool, the inner side wall, the outer side wall, and the central support device arranged at the center of the bottom of the pool. The bottom of the pool is a horizontal bottom surface, and a material discharge channel is opened along the radial direction at the bottom of the pool. The height of the inner side wall is lower than the height of the outer side wall, so that A drainage groove is formed between the inner side wall and the outer side wall, and a water outlet is opened on the outer side wall. The central support device is fixed at the center of the bottom of the pool along the vertical direction, and the scraper device is connected between the central support device and the settlement Between the outer walls of the pool, the scraper device includes a connecting steel frame, a scraper assembly, a submersible pump, and a pressure pipe assembly. One end of the connecting steel frame is connected to the central support device and can rotate around the central support device. The other end of the steel frame is overlapped with the end face of the outer wall of the settling tank, and can move relative to the end face of the outer wall. The scraper assembly is arranged at the bottom of the connecting steel frame, and the scraper assembly includes several adjacent scrapers. , the scraper is a rectangular plate with a sealed cavity inside, and several scrapers are arranged in sequence along the radial direction of the pool bottom to form a scraper assembly. The bottom of the scraper does not contact the bottom of the pool, and the submersible pump Fixedly installed on the connecting steel frame, the water outlet end of the submersible pump is connected to the pressure pipe assembly. The pressure pipe assembly includes a main pipe, a branch pipe, and a short water outlet pipe. One end of the branch pipe, the other end of the branch pipe communicates with the sealed cavity inside the scraper, and a through hole is opened at the lower end of the front side wall of the scraper, and the short water outlet pipe is fixedly connected with the through hole so that the water outlet is short The pipe communicates with the sealed cavity of the scraper, and the traveling device includes a traveling driving assembly and rubber wheels, and the traveling driving assembly is fixedly arranged at one end of the connecting steel frame close to the outer wall of the settling tank, and the rubber wheels and The driving drive assembly is connected by transmission, and the rubber wheel is supported between the connecting steel frame and the end face of the outer wall to drive the rubber wheel to roll through the walking driving assembly, and then the rolling rubber wheel drives the connecting steel frame to crawl along the end face of the outer wall. The feeding device includes a feeding inclined pipe and a flocculation mixed solution storage tank, one end of the feeding inclined pipe is used to input the water-coal slime mixture, and the other end of the feeding inclined pipe is connected with the central support device, so that the feeding inclined pipe The water-coal slurry mixture in the pipe is discharged from the central support device into the settling tank. The flocculation mixture storage tank is used to store the flocculant mixture. The internal communication of the flocculant mixture is added to the feeding inclined tube. 2. The improved rake type thickening and settling system as claimed in claim 1, characterized in that: the material discharge channel is an inclined channel, so that the heavier coal slime mixture flows out along the inclined channel, and the material discharge channel The end is connected to a slurry pump to suck and discharge the coal slime mixture through the slurry pump. The inlet of the slurry pump is connected to one end of the circular tube channel, and the other end of the circular tube channel is connected to the small mouth end of the umbrella joint. The large mouth end of the umbrella joint is connected to the end of the material discharge channel to increase the pressure of the material entering the slurry pump from the material discharge channel through the umbrella joint. 3. The improved rake-type thickening and settling system according to claim 2, characterized in that: the bottom surface of the drainage tank is inclined from the end far away from the water outlet to the end close to the water outlet. 4. The improved rake-type thickening and settling system as claimed in claim 2, characterized in that: the central support device includes a support pier, an outer bucket, a swirl motor, and a propeller, and the support pier is fixed at the center of the bottom of the pool. Cylinder, the outer barrel is a hollow cylindrical shell, the lower end of the outer barrel is fixedly sleeved on the support pier, the upper end of the outer barrel is provided with a feeding port to connect with the feeding inclined pipe, and the swirl motor is fixedly set Inside the outer tub, the propeller is arranged below the swirl motor and connected to the output end of the swirl motor. A number of discharge windows are opened on the side wall of the outer tub facing the propeller, so that the material that enters from the feeding port The water-coal slime mixture is thrown out from the discharge window. 5. The improved rake-type thickening and settling system as claimed in claim 4, characterized in that: the connecting steel frame comprises a crossbeam, a sleeve fixedly connected with the crossbeam is arranged at one end of the crossbeam, and the upper end of the outer barrel of the central support device A groove is provided on the side wall for inserting the sleeve, and the sleeve is sleeved in the groove so that the beam drives the sleeve to rotate around the groove. 6. The improved rake type thickening and settling system as claimed in claim 5, characterized in that: a walking ground wheel is set at the bottom end of the connecting steel frame, and the walking ground wheel is arranged behind the scraper, and the walking ground wheel The ground wheel is arranged at the position of 1/2 length of the connecting steel frame. 7. The improved rake-type thickening and settling system according to claim 6, characterized in that: the short water outlet pipe is installed obliquely on the front side wall of the scraper, so that the water flow blown out of the short water outlet pipe is obliquely blown on the bottom of the pool to fully agitate the slime that has settled on the bottom of the pool. 8. The improved rake type thickening and settling system as claimed in claim 7, characterized in that: a connector is provided at the end of the short outlet pipe, the connector is detachably connected with the short outlet pipe, and the end of the connector is Duckbill-shaped flat mouth to increase the pressure of water outlet. 9. The improved rake-type thickening and settling system as claimed in claim 8, characterized in that: a flow valve is set on the branch pipe connected to each scraper, and the sealed cavity entering the scraper is controlled by adjusting the flow valve the pressure of the water inside. 10. The improved rake-type thickening and settling system as claimed in claim 1, characterized in that: the travel drive assembly includes a travel motor, a drive gear set, and a transmission bearing that are connected in sequence, and the transmission bearing and the rubber wheel connected, the traveling motor is a variable-speed motor, and the traveling device also includes a controller, a display, a timer and a wheeled rangefinder arranged on the connecting steel frame, and the controller is connected with the wheeled rangefinder, the display, The timer is connected to the walking motor, the wheel distance meter sends the measured distance information to the controller, the timer sends the recorded time information to the controller, and the controller processes the distance information and time information The real-time speed information is obtained, and sent to the display, and displayed by the display, the controller also compares the real-time speed information with the preset speed information in the controller, and adjusts the speed of the walking motor according to the comparison result, when the real-time speed If the speed is greater than the preset speed, the controller adjusts the speed of the walking motor to become slower; when the real-time speed is lower than the preset speed, the controller adjusts the speed of the walking motor to become faster, thereby adjusting the walking speed of the rubber wheel. The connecting arm of the rangefinder is fixed on the connecting steel frame at the front end of the rubber wheel, the roller of the wheeled rangefinder is placed on the end surface of the outer wall, and is set between the connecting arm of the wheeled rangefinder and the connecting steel frame The elastic connecting piece is used to closely fit the roller of the wheeled rangefinder on the end surface of the outer wall through the shrinkage force of the elastic connecting piece, so as to avoid the roller of the wheeled rangefinder from idling or not in contact with the end surface of the outer wall. The measurement is not accurate.