CN110736308B

CN110736308B - Tower type water separation concentrate drying machine

Info

Publication number: CN110736308B
Application number: CN201911041102.7A
Authority: CN
Inventors: 陆永柱; 张继美
Original assignee: Shandong Wuhua Tianbao Mining Group Co Ltd
Current assignee: Shandong Wuhua Tianbao Mining Group Co., Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-11-20
Anticipated expiration: 2039-10-30
Also published as: CN110736308A

Abstract

The invention provides a tower type water separation concentrate drying machine, which comprises a mounting rack, a drying device, an input device, an output device and a power driving device, wherein the drying device is fixedly arranged on the mounting rack, the drying device comprises a primary drying mechanism, an air drying mechanism and a secondary drying mechanism which are sequentially arranged from top to bottom, the primary drying mechanism, the air drying mechanism and the secondary drying mechanism form a tower type structure, the input device is used for conveying moist concentrate to the input end of the primary drying mechanism, the concentrate sequentially passes through the primary drying mechanism, the air drying mechanism and the secondary drying mechanism, the secondary drying mechanism discharges the dried concentrate to the output device and discharges the dried concentrate outwards through the output device, the primary drying mechanism is used for centrifugally dewatering the concentrate and primarily drying the concentrate, the air drying mechanism is used for air drying the concentrate, the secondary drying mechanism is used for secondarily drying the concentrate, and the power driving device is used for driving the primary, The air drying mechanism and the secondary drying mechanism provide driving power.

Description

Tower type water separation concentrate drying machine

Technical Field

The invention relates to a dryer, in particular to a tower type water separation concentrate dryer.

Background

Mineral separation is the most important link in the whole production process of mineral products, is a key department in a mineral enterprise, and generally large-scale mineral enterprises are resource enterprises for comprehensive mining, selection and metallurgy, useful minerals and useless minerals or harmful minerals in mineral raw materials are separated by a physical or chemical method, wherein the useful components are enriched to be called concentrate, and the useless components are enriched to be called tailings High-automation-degree tower type water separation concentrate drying machine.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the tower type water separation concentrate drying machine which is ingenious and compact in structure, simple in principle, convenient to operate and use and high in automation degree.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

The utility model provides a tower flotation concentrate desiccator, which comprises a mounting bracket, the fixed drying device who sets up on the mounting bracket, an input device, output device and power drive, drying device is including the one-level stoving mechanism that arranges in proper order from top to bottom, air-dry mechanism and second grade stoving mechanism and the three constitutes tower structure, input device is used for carrying moist concentrate to the input of one-level stoving mechanism and the concentrate passes through one-level stoving mechanism, air-dry mechanism and second grade stoving mechanism in proper order, second grade stoving mechanism discharges dry concentrate to output device and outwards discharges dry concentrate by output device, one-level stoving mechanism is used for carrying out centrifugal dehydration and preliminary drying process to the concentrate, air-dry mechanism is used for carrying out air-dry process to the concentrate, second grade stoving mechanism is used for carrying out secondary drying process to the concentrate, power drive is used for carrying out one-level stoving mechanism, output device and, The air drying mechanism and the secondary drying mechanism provide driving power.

As a further optimization or improvement of the present solution.

The primary drying mechanism comprises an outer barrel and an inner barrel which are coaxially arranged and are provided with openings at the upper end and the lower end, the outer barrel is sleeved outside the inner barrel, an annular blanking channel I is formed between the outer barrel and the inner barrel, a sealing cap for plugging the opening of the outer barrel is fixedly arranged at the top end of the outer barrel and is positioned above the blanking channel I, a hollowed inner frame is fixedly arranged at the middle position of the inner surface of the inner barrel along the axis direction, a circular dewatering disc with an upward opening is movably arranged on the inner frame and is coaxially arranged with the inner barrel, the opening size of the dewatering disc is gradually increased from bottom to top along the vertical direction, the bottom of the dewatering disc is rotatably connected and matched with the inner frame, the axial direction of a rotating shaft is coaxially arranged with the inner barrel, the opening of the dewatering disc is overlapped on the edge of the top end of the inner barrel, sieve pores which are penetrated inside and outside are arranged on the dewatering disc, and an upward conical tip, the output end of the input device is connected and communicated with the sealing cap, the communicated position is positioned right above the conical tip, a supporting plate matched with the bottom opening of the inner cylinder body is coaxially and fixedly arranged at the bottom opening of the inner cylinder body, an inner rotating shaft coaxially arranged with the inner cylinder body is rotatably arranged on the supporting plate, the driving end of the inner rotating shaft vertically extends downwards, the end of the inner rotating shaft is connected with the power driving device, the output end of the inner rotating shaft vertically extends upwards, and the end of the inner rotating shaft is coaxially and fixedly connected with the bottom of the;

the inner barrel is internally provided with a water pan with an upward opening, the size of the opening of the water pan is gradually increased from bottom to top along the vertical direction, the opening of the water pan is rotationally attached to the inner wall of the inner barrel, the water pan is positioned between the inner frame and the supporting plate, the water pan is hermetically sealed and connected onto an inner rotating shaft, the inner rotating shaft is arranged in a hollow manner, a drain hole communicated with the inner rotating shaft is formed in the inner rotating shaft, the drain hole is positioned at the bottom of the water pan, the bottom of the inner rotating shaft is communicated with a drain pipe through a rotatable joint, and the output end of the drain pipe points;

the outer barrel is of an inner-outer two-layer structure, an annular inner cavity is formed between the inner barrel and the outer barrel, a first annular heater matched with the inner cavity is arranged in the inner cavity, the first heater is attached to the inner layer of the outer barrel, a wave-shaped drying piece which is arranged along the axial direction of the outer barrel is arranged in the first feeding channel, the drying piece extends to the bottom end of the first feeding channel from the top end of the first feeding channel, one end of the drying piece in the width direction is fixedly connected with the inner wall of the inner layer of the outer barrel, the other end of the drying piece in the width direction is attached to the outer circumferential surface of the inner barrel, the drying piece is provided with a plurality of drying pieces and is arranged in an array mode along the circumferential direction where the outer barrel is located, the first feeding channel is divided into a plurality.

As a further optimization or improvement of the present solution.

The air drying mechanism comprises an outer cone and an inner cone which are coaxially arranged with openings at the upper end and the lower end, the sizes of the openings of the outer cone and the inner cone are gradually increased from bottom to top along the vertical direction, the taper of the outer cone and the taper of the inner cone are equal, the outer cone is sleeved outside the inner cone, an annular discharging channel II is formed between the outer cone and the inner cone, the discharging channel II is gradually narrowed from top to bottom along the vertical direction, the top end of the outer cone is coaxially and fixedly connected with the bottom end of the outer cylinder, the inner cone is coaxially and fixedly connected with the lower end surface of a supporting plate, the top end of the discharging channel II is communicated with the bottom end of a discharging channel I, a supporting cylinder for plugging the opening at the lower end of the inner cone is coaxially and fixedly arranged, the stacking height of the supporting cylinder and the inner cone is equal to the height of the outer cone, an annular sliding plate is coaxially and fixedly arranged on the, the air drying mechanism further comprises an outer rotating shaft which is coaxially rotatably sleeved outside the inner rotating shaft, a driving end of the outer rotating shaft vertically extends downwards and is connected with a power driving device, an output end of the outer rotating shaft vertically extends upwards into the inner conical cylinder, and the outer rotating shaft is rotatably connected and matched with the inner conical cylinder and the supporting cylinder, the fan is coaxially and fixedly sleeved on the output end of the outer rotating shaft, the supporting cylinder is provided with an air inlet which penetrates up and down and is parallel to the axial direction of the supporting cylinder, and the air inlet is communicated with the outside air.

As a further optimization or improvement of the present solution.

The secondary drying mechanism comprises a supporting plate fixedly connected with the mounting frame, a drying disc coaxially movably sleeved outside the outer rotating shaft is fixedly arranged on the upper end face of the supporting plate, an opening of the drying disc is upward, an annular sealing cover coaxially and fixedly connected with the opening is arranged at the opening, a speed reduction transmission component with an annular structure is coaxially arranged in the drying disc, a mounting ring with a thin-wall structure is coaxially sleeved on the outer circular surface of the speed reduction transmission component, a rectangular scraper blade which extends upward and is contacted with the inner wall of the drying disc is arranged on the outer circular surface of the mounting ring, the width direction of the scraper blade is vertically arranged, the scraper blade is attached to the disc bottom of the drying disc, the scraper blade is provided with a plurality of scraper blades and is arranged in an array along the circumferential direction of the mounting ring, a material storage groove is formed between the adjacent scraper blades, the diameter of the mounting ring is smaller than that of the opening of, wherein the bottom end of the outer cone cylinder is fixedly connected with the sealing cover, and the supporting cylinder is fixedly connected with the speed reduction transmission member;

the utility model discloses a drying plate, including drying plate, material storage tank, lower terminal surface, annular, the last row's of being provided with of upper and lower opening arrangement of backup pad material pipe, the top of arranging the material pipe extends to in the drying plate and holds the silo corresponding rather than one, the lower terminal surface of drying plate is coaxial to be provided with annular interior heavy groove and hold the silo and correspond from top to bottom, and interior heavy inslot internal fixation inlays and is equipped with annular heater two rather than the matching, the drying plate is made for the material that.

As a further optimization or improvement of the present solution.

The speed reduction transmission component comprises a fixed disk which is fixedly connected with the bottom of the drying disk and coaxially and movably sleeved outside the outer rotating shaft, a driving gear is rotatably embedded in the fixed disk, the driving gear is coaxially and fixedly sleeved on the outer rotating shaft, a driven gear ring is coaxially and movably arranged between the fixed disk and the mounting ring and is an inner gear ring, transmission gears which are axially parallel to the axial direction of the driving gear are further embedded in the upper end face of the fixed disk, the transmission gears are arranged in an array mode along the circumferential direction of the fixed disk, the transmission gears are located between the driving gear and the driven gear ring and are meshed with the driving gear and the driven gear ring, the outer circular face of the driven gear ring is in key connection with the mounting ring, the diameter of the driving gear is smaller;

the end cover and the supporting cylinder are equal in diameter, the supporting cylinder is fixedly connected with the upper end face of the end cover, through holes which are axially and vertically arranged are formed in the end cover and the fixing disc, the lower ends of the through holes are communicated with the outside, and the upper ends of the through holes are communicated with the air inlet hole.

As a further optimization or improvement of the present solution.

The input device is fixedly connected with the mounting frame and positioned above the sealing cap, the input device comprises a rectangular fixing frame fixedly connected with the mounting frame, a driving roller and a driven roller which are arranged at intervals are arranged on the fixing frame in a rotating mode, the driving roller and the driven roller are arranged at the same height, the axial directions of the driving roller and the driven roller are parallel to the tangential direction of the circumference of the outer barrel body, a conveying belt wound between the driving roller and the driven roller is arranged between the driving roller and the driven roller, a hopper fixedly connected with the fixing frame is arranged above the input end of the conveying belt, the output end of the conveying belt is positioned above the sealing cap, a hopper is arranged between the driving roller and the driven roller, the input end of the hopper is connected with the output end of the ore dressing equipment and used for receiving wet concentrate discharged by the ore dressing equipment, the output end of the hopper, the input port of the funnel is connected with the output end of the conveyer belt, the output port is communicated with the sealing cap, and the communicated position is positioned right above the conical tip;

the input device further comprises a conveying motor fixedly connected with the fixing frame, the axial direction of an output shaft of the conveying motor is parallel to the axis direction of the driving roller, a first belt transmission assembly for connecting the conveying motor and the driving roller is arranged between the conveying motor and the driving end of the roller shaft of the driving roller, and the first belt transmission assembly transmits power on the output shaft of the conveying motor to the driving roller and drives the driving roller to rotate around the axis of the driving roller.

As a further optimization or improvement of the present solution.

The output device is fixedly connected with the mounting frame and is positioned below the secondary drying mechanism, the output device comprises a rectangular discharge channel which is obliquely arranged and has two open ends, the discharge channel is gradually obliquely and downwards arranged from an input port to an output port, the inclination angle is 30-45 degrees, the input port of the discharge channel is vertically upwards and is positioned right below a discharge pipe, the output port of the discharge pipe is communicated with the input port of the discharge channel, and the output port of the discharge channel is obliquely arranged along the inclination direction and points to a concentrate stacking point;

the lower end face of the discharge channel is obliquely arranged to form a step-shaped rectangular springboard, a gap is arranged between every two adjacent springboards along a horizontal position, an overlapped cross part is arranged along a vertical position, the inclined angle of the springboard is 25-40 degrees and smaller than the inclined angle of the discharge channel, a plurality of pores are formed in the upper end face of the discharge channel, the output device further comprises an air blower fixedly connected with the mounting frame, an air guide pipe used for connecting the output end of the air blower and the bottom of the discharge channel is arranged between the output end of the air blower and the bottom of the discharge channel, the input end of the air guide pipe is connected and communicated with the output end of the air blower, the output end of the air guide pipe is horizontal and connected and communicated with the bottom of the discharge channel and points to the gap between the two.

As a further optimization or improvement of the present solution.

The power driving device comprises a first power component for driving the outer rotating shaft to rotate at a constant speed and a second power component for driving the inner rotating shaft to rotate at a variable speed, and the first power component and the second power component are fixedly connected with the mounting frame.

As a further optimization or improvement of the present solution.

The power component I comprises a motor I fixedly connected with the mounting frame, the axial direction of an output shaft of the motor I is parallel to the axial direction of the outer rotating shaft, a belt transmission component II used for connecting the output shaft of the motor I and the driving end of the outer rotating shaft is arranged between the output shaft of the motor I and the driving end of the outer rotating shaft, and the belt transmission component II is used for transmitting the power on the output shaft of the motor I to the outer rotating shaft and driving the outer rotating shaft to rotate around the axis of.

As a further optimization or improvement of the present solution.

The second power component comprises a transmission main shaft which is positioned below the supporting plate and is rotatably arranged on the supporting plate and the mounting frame, and a second motor which is fixedly arranged on the mounting frame and is vertically arranged in the axial direction, the axial direction of the transmission main shaft is parallel to the axial direction of the inner rotating shaft, a third belt transmission component for connecting the second motor and the transmission main shaft is arranged between an output shaft of the second motor and a driving end of the transmission main shaft, the third belt transmission component is used for transmitting power on the output shaft of the second motor to the transmission main shaft and driving the transmission main shaft to rotate around the axial direction of the third belt transmission component, the driving end of the inner rotating shaft extends downwards from the driving end of the outer rotating shaft, and.

Compared with the prior art, the centrifugal drying device has the advantages that the centrifugal drying device is ingenious and compact in structure, simple in principle and convenient to operate and use, the tower type structure is formed by the primary drying mechanism, the air drying mechanism and the secondary drying mechanism from top to bottom, the primary drying mechanism conducts centrifugal dehydration primary drying treatment on concentrate, the air drying mechanism conducts air drying on the dehydrated concentrate, the secondary drying mechanism conducts secondary drying treatment on the air-dried concentrate, the drying efficiency of the concentrate is greatly improved, meanwhile, the input device can transport the concentrate added into the primary drying mechanism, the output device can conduct heat dissipation treatment on the concentrate after secondary drying and discharge the concentrate outwards, and the drying automation degree of the concentrate is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a matching view of the drying device and the mounting frame.

Fig. 3 is a schematic structural view of the drying apparatus.

Fig. 4 is a schematic diagram of the internal structure of the primary drying mechanism.

Fig. 5 is a matching diagram of the primary drying mechanism and the air drying mechanism.

Fig. 6 is a matching diagram of the primary drying mechanism and the air drying mechanism.

Fig. 7 is a partial structure schematic diagram of a primary drying mechanism.

Fig. 8 is a schematic view of the internal structure of the primary drying mechanism.

Fig. 9 is a schematic view of the internal structure of the primary drying mechanism.

Fig. 10 is a sectional view of the outer cylinder.

Fig. 11 is a connection diagram of the primary drying mechanism and the seasoning mechanism.

Fig. 12 is an exploded schematic view of the airing mechanism.

Fig. 13 is a partial structural view of the seasoning mechanism.

Fig. 14 is a partial schematic view of the seasoning mechanism.

Fig. 15 is a matching diagram of the air drying mechanism and the secondary drying mechanism.

Fig. 16 is a schematic structural diagram of the secondary drying mechanism.

Fig. 17 is an internal structure diagram of the secondary drying mechanism.

Fig. 18 is a partial structural schematic diagram of the secondary drying mechanism.

Fig. 19 is a partial structural schematic diagram of the secondary drying mechanism.

Fig. 20 is a schematic structural view of a speed reduction transmission member.

Fig. 21 is a schematic structural view of a speed reduction transmission member.

Fig. 22 is a diagram showing the combination of the input device and the drying device.

Fig. 23 is a schematic structural diagram of the input device.

Fig. 24 is a schematic structural view of the fixing frame.

Fig. 25 is a partial structural diagram of the input device.

Fig. 26 is a schematic structural diagram of an output device.

Fig. 27 is a sectional view of the output device.

FIG. 28 is a drawing showing the power driving device in cooperation with the inner and outer rotating shafts.

FIG. 29 shows a mating view of a power member and an outer shaft.

FIG. 30 is a drawing showing the engagement of the second power member with the inner shaft.

FIG. 31 is a drawing showing the engagement of the second power member with the inner shaft.

FIG. 32 is a partial schematic view of a second power member.

FIG. 33 is a partial schematic view of a second power member.

Detailed Description

Referring to fig. 1 to 33, a tower-type water separation concentrate dryer comprises an installation frame 100, a drying device 200 fixedly arranged on the installation frame 100, an input device 300, an output device 400 and a power driving device 500, wherein the drying device 200 comprises a primary drying mechanism 210, an air drying mechanism 220 and a secondary drying mechanism 230 which are sequentially arranged from top to bottom, the primary drying mechanism 210, the air drying mechanism 220 and the secondary drying mechanism 230 form a tower structure, the input device 300 is used for conveying wet concentrate to the input end of the primary drying mechanism 210, the concentrate sequentially passes through the primary drying mechanism 210, the air drying mechanism 220 and the secondary drying mechanism 230, the secondary drying mechanism 230 discharges the dried concentrate to the output device 400, the output device 400 discharges the dried concentrate outwards, the primary drying mechanism 210 is used for performing centrifugal dehydration and primary drying treatment on the concentrate, and the air drying mechanism 220 is used for performing air drying treatment on the concentrate, the secondary drying mechanism 230 is used for performing secondary drying treatment on the concentrate, and the power driving device 500 is used for providing driving power for the primary drying mechanism 210, the air drying mechanism 220 and the secondary drying mechanism 230.

Specifically, the primary drying mechanism 210 includes an outer cylinder 211 and an inner cylinder 212 which are coaxially arranged and have openings at upper and lower ends, the outer cylinder 211 is sleeved outside the inner cylinder 212 and an annular feeding channel I is formed between the outer cylinder 211 and the inner cylinder 212, a sealing cap 213 for sealing the opening of the outer cylinder 211 is fixedly arranged at the top end of the outer cylinder 211 and is positioned above the feeding channel I, a hollowed inner frame 212b is fixedly arranged at the middle position of the inner surface of the inner cylinder 212 along the axial direction of the inner cylinder, a circular dewatering disc 214 with an upward opening is movably arranged on the inner frame 212b and is coaxially arranged with the inner cylinder 212, the opening size of the dewatering disc 214 is gradually increased from bottom to top along the vertical direction, the bottom of the dewatering disc 214 is rotatably connected and matched with the inner frame 212b and the axial direction of the rotating shaft is coaxially arranged with the inner cylinder 212, the opening of the dewatering disc 214 is lined on the top edge of the inner cylinder 212, in order to facilitate the dry-wet separation of the moist concentrate, the dewatering tray 214 is provided with inside and outside through sieve holes 214a, the bottom of the dewatering tray 214 is coaxially provided with an upward conical tip 214b, the output end of the input device 300 is connected and communicated with the sealing cap 213, the connection position is positioned right above the conical tip 214b, in order to drive the dewatering tray 214 to rotate, the opening at the bottom of the inner cylinder 212 is coaxially and fixedly provided with a supporting plate 212a matched with the inner cylinder 212, the supporting plate 212a is rotatably provided with an inner rotating shaft 215 coaxially arranged with the inner cylinder 212, the driving end of the inner rotating shaft 215 extends vertically downwards and is connected with the power driving device 500, the output end extends vertically upwards and is coaxially and fixedly connected with the bottom of the dewatering tray 214, the dewatering tray 214 is driven to rotate by the inner rotating shaft 215, so that the moisture in the moist concentrate in the dewatering tray 214 generates centrifugal motion and is discharged outwards through the sieve holes 214a, after that, the dewatered concentrate will centrifugally move and fly out from the opening of the dewatering disc 214 upwards and fall into the first blanking channel under the shielding effect of the sealing cap 213, and the primary drying process is completed during the falling of the first blanking channel.

More specifically, in order to collect and guide the water droplets discharged by the sieve holes 214a into the sewer, a water pan 215a with an upward opening is coaxially disposed in the inner cylinder 212, the size of the opening of the water pan 215a gradually increases from bottom to top along the vertical direction, the opening of the water pan 215a is rotatably attached to the inner wall of the inner cylinder 212, the water pan 215a is disposed between the inner frame 212b and the support plate 212a, the water pan 215a is hermetically sealed and connected to the inner rotating shaft 215, in order to facilitate the water droplets collected by the water pan 215a to be discharged, the inner rotating shaft 215 is disposed in a hollow manner, a drain hole 215b communicated with the inner rotating shaft 215 is formed in the inner rotating shaft 215, the drain hole 215b is disposed at the bottom of the water pan 215a, the bottom of the inner rotating shaft 215 is connected to a drain pipe through a rotatable joint, and the output end of the drain pipe points to the sewer (not shown in, the water collected by the drip tray 215a is discharged to the sewer through the water discharge hole 215b, the inner rotary shaft 215, and the water discharge pipe.

The centrifugally flying concentrate falls from top to bottom in the first blanking channel, in order to perform primary drying treatment on the concentrate in the first blanking channel, the outer cylinder 211 is of an inner-outer two-layer structure, an annular inner cavity is formed between the inner cylinder and the outer cylinder, an annular heater 218 matched with the inner cavity is arranged in the inner cavity, the heater 218 is attached to the inner layer of the outer cylinder 211, a wavy drying sheet 216 arranged in the axial direction parallel to the outer cylinder 211 is arranged in the first blanking channel, the drying sheet 216 extends from the top end of the first blanking channel to the bottom end of the first blanking channel, one end of the drying sheet 216 in the width direction is fixedly connected with the inner wall of the inner layer of the outer cylinder 211, the other end of the drying sheet 216 in the width direction is attached to the outer circular surface of the inner cylinder 212, the drying sheet 216 is provided with a plurality of drying sheets and is arranged in an array along the circumferential direction of the outer cylinder 211, and the first blanking channel, in order to facilitate the first heater 218 to transfer heat to the drying plate 216, the outer cylinder 211 and the drying plate 216 are made of materials with good heat conductivity, and concentrate slowly moves downwards in the drying channel 217 in a curve, so that on one hand, the heat exchange time of the concentrate and the drying plate 216 is prolonged; on the other hand, the drying sheet 216 can make the concentrate bounce and turn over in the drying channel 217, so that the concentrate can be fully contacted with the drying sheet 216.

During the operation of the primary drying mechanism 210, the input device 300 conveys the moist concentrate into the dewatering tray 214 from top to bottom and evenly spreads the moist concentrate into the dewatering tray 214 under the guiding action of the conical tip 214b, at the same time, the power driving device 500 drives the inner rotating shaft 215 to rotate, the inner rotating shaft 215 drives the dewatering tray 214 to synchronously rotate at high speed and make the moisture in the moist concentrate centrifugally move and be thrown out by the sieve holes 214a, the thrown moisture becomes water drops and drops into the water receiving tray 215a, then the water drops are converged and sequentially flow into a sewer through the water discharge hole 215b, the inner rotating shaft 215 and the water discharge pipe, thereafter, the rotating speed of the inner rotating shaft 215 is increased, so that the concentrate centrifugally moves, the opening of the dewatering tray 214 flies upwards and drops into the drying channel 217 under the shielding action of the sealing cap 213, the concentrate slowly moves downwards in a curve in the drying channel 217 and exchanges heat with the drying sheet 216, and finishing the dehydration primary drying treatment of the concentrate.

The air drying mechanism 220 comprises an outer cone 221 and an inner cone 222 which are coaxially arranged with openings at the upper end and the lower end, the sizes of the openings of the outer cone 221 and the inner cone 222 are gradually increased from bottom to top along the vertical direction, the taper of the outer cone 221 and the taper of the inner cone 222 are equal, the outer cone 221 is sleeved outside the inner cone 222, an annular discharging channel II is formed between the outer cone 221 and the inner cone 222, the discharging channel II is gradually narrowed from top to bottom along the vertical direction, the top end of the outer cone 221 is coaxially and fixedly connected with the bottom end of the outer cylinder 211, the inner cone 222 is coaxially and fixedly connected with the lower end face of a supporting plate 212a, the top end of the discharging channel II is communicated with the bottom end of the discharging channel I, a supporting cylinder 223 for plugging the inner cone 222 is coaxially and fixedly arranged at the opening at the lower end, the stacking height of the supporting cylinder 223 and the inner cone 222 is equal to the height of the outer cone 221, an annular sliding plate 224 is coaxially and fixedly arranged on the inner circular, the sliding plates 224 are arranged in a gradually downward inclined manner from the outer cone cylinder 221 to the inner cone cylinder 222, the inclined angle is 10-20 degrees, the sliding plates 224 are provided with a plurality of air outlet holes 225 which are arranged through the outer cone cylinder 221 along the bus direction of the outer cone cylinder 221, a plurality of air outlet holes 225 which are arranged through the outer cone cylinder 221 are arranged between every two adjacent sliding plates 224, the air outlet holes 225 are provided with a plurality of air outlet holes 226 which are arranged in an array manner along the circumferential direction of the sliding plates 224, a plurality of air outlet holes 226 which are arranged in a penetrating manner are formed in the conical surface of the inner cone cylinder 222, a vertical fan 228 is movably arranged in the inner cone cylinder 222, blades of the fan 228 have the top of the inner cone cylinder 222 extending to the bottom thereof, in order to drive the fan 228 to rotate, the air drying mechanism 220 further comprises an outer rotating shaft 227 which is coaxially rotatably sleeved outside the inner rotating shaft 215, the driving end of the outer rotating shaft 227 extends vertically downward and is connected with, The supporting cylinders 223 are rotatably connected and matched, the fan 228 is coaxially and fixedly sleeved on the output end of the outer rotating shaft 227, in order to facilitate air intake of the inner cone 222, air inlets 229 which penetrate through the supporting cylinders 223 from top to bottom and are parallel to the axial direction of the supporting cylinders are formed, the air inlets 229 are communicated with the outside air, and concentrate flowing through the blanking channel II is dried through rotation of the fan 228.

In the working process of the air drying mechanism 220, the power driving device 500 drives the outer rotating shaft 227 to rotate, the outer rotating shaft 227 drives the fan 228 to synchronously rotate, outside air enters the inner cone 222 through the air inlet 229 and is discharged through the discharge hole II 226 through the discharge channel II and the discharge hole I225, the outside air circularly flows in the way, meanwhile, concentrate jumps downwards from top to bottom through the sliding plate 224 and slides down, in the process, the flowing air is used for air drying the concentrate, and the concentrate subjected to the air drying treatment is discharged into the secondary drying mechanism 230 from the bottom end of the discharge channel II.

The secondary drying mechanism 230 comprises a supporting plate 231 fixedly connected with the mounting frame 100, the upper end surface of the supporting plate 231 is fixedly provided with a drying disk 232 coaxially and movably sleeved outside the outer rotating shaft 227, an opening of the drying disk 232 is upward, an annular sealing cover 233 coaxially and fixedly connected with the opening is arranged at the opening, a speed reduction transmission member 240 with an annular structure is coaxially arranged in the drying disk 232, an installation ring 237 with a thin-wall structure is coaxially sleeved on the outer circular surface of the speed reduction transmission member 240, a rectangular scraper 238 which extends upward and is contacted with the inner wall of the drying disk 232 is arranged on the outer circular surface of the installation ring 237, the width direction of the scraper 238 is vertically arranged, the scraper 238 is attached to the disk bottom of the drying disk 232, the scrapers 238 are arranged in an array along the circumferential direction where the installation ring 237 is located, a material storage groove is formed between adjacent scrapers 238, the diameter of the installation ring 237 is smaller than, the opening is aligned with the bottom end of the second discharging channel up and down and is connected and communicated, wherein the bottom end of the outer conical cylinder 221 is fixedly connected with the sealing cover 233, and the supporting cylinder 223 is fixedly connected with the speed reduction transmission member 240.

Specifically, in order to perform secondary drying on the concentrate falling into the drying disk 232 and discharge the concentrate, the support plate 231 is provided with a discharge pipe 236 with an upper opening and a lower opening, the top end of the discharge pipe 236 extends into the drying disk 232 and corresponds to one of the material storage tanks, the lower end surface of the drying disk 232 is coaxially provided with an annular inner sinking groove 234, the inner sinking groove 234 corresponds to the material storage tank, a second annular heater 235 matched with the inner sinking groove 234 is fixedly embedded in the inner sinking groove 234, for heat conduction, the drying disk 232 is made of a material with good heat conductivity, the drying disk 232 receives the heat energy of the second heater 235 and performs heat exchange treatment on the concentrate in the drying disk 232, secondary drying treatment on the concentrate is completed, the power of the outer rotating shaft 227 is transmitted to the mounting ring 237 through the speed reduction transmission member 240 and drives the scraper 238 to slowly rotate around the axis of the mounting ring 237, the concentrate after the secondary drying treatment is pushed to the inlet of the discharging pipe 236, and the concentrate falls into the output device 400 from the discharging pipe 236 under the action of the self gravity.

More specifically, in order to drive the mounting ring 237 to rotate, the speed reduction transmission member 240 includes a fixed disk 241 fixedly connected to the bottom of the drying disk 232 and coaxially and movably sleeved outside the outer rotating shaft 227, a driving gear 242 is rotatably and embedded in the fixed disk 241, the driving gear 242 is coaxially and fixedly sleeved on the outer rotating shaft 227, a driven gear ring 243 is coaxially and movably arranged between the fixed disk 241 and the mounting ring 237, the driven gear ring 243 is an inner gear ring, a transmission gear 244 axially parallel to the axial direction of the driving gear 242 is further embedded in the upper end surface of the fixed disk 241, three transmission gears 244 are arranged and arranged in an array along the circumferential direction of the fixed disk 241, the transmission gear 244 is located between the driving gear 242 and the driven gear ring 243 and is engaged with the driving gear 242 and the driven gear ring 243, the outer circumferential surface of the driven gear ring 243 is in key connection with the, in order to shield the transmission gear 244, the driving gear 242 and the driven ring gear 243, an end cover 245 matched with the upper end surface of the fixed disc 241 is coaxially arranged on the upper end surface of the fixed disc 241.

More specifically, the diameters of the end cover 245 and the support cylinder 223 are equal, the support cylinder 223 is fixedly connected with the upper end face of the end cover 245, through holes which are axially and vertically arranged are formed in the end cover 245 and the fixed plate 241, the lower end of each through hole is communicated with the outside, and the upper end of each through hole is communicated with the air inlet 229.

In the working process of the secondary drying mechanism 230, the outer rotating shaft 227 drives the driving gear 242 to rotate, the transmission gear 244 transmits the power of the driving gear 242 to the driven gear ring 243 and drives the driven gear ring 243 to rotate, the driven gear ring 243 drives the scraper 238 to slowly rotate around the axis direction of the mounting ring 237, the concentrate falling into the feeding groove is pushed to the inlet of the discharging pipe 236 and falls into the output device 400 through the discharging pipe 236, in the process, the second heater 235 transmits the heat to the drying disc 232, the drying disc 232 exchanges heat with the concentrate in the storage groove, and secondary drying processing is performed on the concentrate.

The input device 300 is fixedly connected with the mounting frame 100 and is positioned above the sealing cap 213, the input device 300 comprises a rectangular fixing frame 301 fixedly connected with the mounting frame 100, a driving roller 302 and a driven roller 303 which are arranged at intervals are rotatably arranged on the fixing frame 301, the driving roller 302 and the driven roller 303 are arranged at the same height, the axial directions of the driving roller 302 and the driven roller 303 are parallel to the tangential direction of the circumference of the outer cylinder body 211, a conveying belt 304 wound between the driving roller 302 and the driven roller 303 is arranged between the driving roller 302 and the driven roller 303, a hopper 307 fixedly connected with the fixing frame 301 is arranged above the input end of the conveying belt 304, the output end of the conveying belt 304 is positioned above the sealing cap 213, and a hopper 308 is arranged between the driving roller 302 and the driven roller 303, wherein the input end of the hopper 307 is connected with the output end of the ore, the size of the opening of the funnel 308 is gradually increased from bottom to top along the vertical direction, the input port of the funnel 308 is connected with the output end of the conveyer belt 304, the output port is connected with the sealing cap 213, and the connection position is positioned right above the conical tip 214b, the concentrate in the hopper 307 is conveyed into the funnel 308 through the conveyer belt 304, and then falls into the dewatering disc 214 from the funnel 308 for dewatering treatment.

Specifically, in order to drive the conveying belt 304 to operate, the input device 300 further includes a conveying motor 305 fixedly connected to the fixing frame 301, an axial direction of an output shaft of the conveying motor 305 is parallel to an axial direction of the driving roller 302, a belt transmission assembly 306 for connecting the conveying motor 305 and the driving roller 302 is disposed between the conveying motor 305 and a driving end of a roller shaft of the driving roller 302, and the belt transmission assembly 306 transmits power on the output shaft of the conveying motor 305 to the driving roller 302 and drives the driving roller 302 to rotate around an axis thereof.

In the operation process of the input device 300, the beneficiation equipment outputs separated concentrate into a hopper 307 and falls onto a conveyer belt 304 from an output port of the hopper 307, a belt transmission assembly 306 transmits power on an output shaft of a conveying motor 305 to a driving roller 302 and drives the driving roller 302 to rotate around the self axial direction, the driving roller 302 and a driven roller 303 cooperate with each other to enable the conveyer belt 304 to rotate circularly and convey the concentrate on an input end of the conveyer belt 304 to an output end, and then the concentrate falls into a funnel 308 from the output end of the conveyer belt 304 and is discharged into a dewatering disc 214 from an output port of the funnel 308.

Output device 400 and mounting bracket 100 fixed connection and be located the below of second grade stoving mechanism 230, output device 400 is including slope arrangement and both ends open-ended rectangle discharge channel 401, discharge channel 401 is by its input port directional delivery outlet slope gradually downward sloping arrangement and the angle of slope is 30 to 45, discharge channel 401's input port is vertical upwards and be located and arrange the material pipe 236 under, the delivery outlet of arranging material pipe 236 and discharge channel 401's input port connection switch-on, discharge channel 401's output port is along its incline direction slant and directional concentrate stacking point, under the effect through discharge channel 401, arrange the concentrate after the drying outward.

Specifically, because the temperature of the concentrate subjected to the secondary drying treatment is high, in order to avoid scalding workers by mistake, the lower end surface of the discharge channel 401 is obliquely arranged into a step-shaped rectangular springboard 405, a gap is arranged between two adjacent springboards 405 along the horizontal position, an overlapped cross part is arranged along the vertical position, the inclination angle of the springboard 405 is 25-40 degrees and is smaller than the inclination angle of the discharge channel 401, the upper end surface of the discharge channel 401 is provided with a plurality of fine holes 404, the output device 400 further comprises a blower 403 fixedly connected with the mounting frame 100, an air guide pipe 402 for connecting the output end of the blower 403 and the bottom of the discharge channel 401 is arranged between the output end of the blower 403 and the bottom of the discharge channel 401, the input end of the air guide pipe 402 is connected and communicated with the output end of the blower 403, the output end is horizontal and connected and communicated with, the outlet end of the air duct 402 forms an obtuse angle with the direction of the discharge channel 401 from the inlet to the outlet.

In the working process of the output device 400, the discharge pipe 236 discharges the dried concentrate to the input port of the discharge channel 401, the concentrate slides downwards along the springboards 405 step by step until the concentrate is discharged from the output end of the discharge channel 401, in the process, the air blower 403 blows air and guides the concentrate into the discharge channel 401 through the air guide pipe 402, the high-speed air flow passes through the gap between the two springboards 405 and the concentrate is subjected to heat dissipation treatment, the high-speed air flow and the concentrate are subjected to complete heat exchange treatment and are converted into high-temperature air flow, and the high-temperature air flow is discharged outwards through the fine holes 404.

In order to drive the inner rotating shaft 215 and the outer rotating shaft 227 to rotate, the power driving apparatus 500 includes a first power member 510 for driving the outer rotating shaft 227 to rotate at a constant speed, and a second power member 520 for driving the inner rotating shaft 215 to rotate at a variable speed, wherein the first power member 510 and the second power member 520 are both fixedly connected to the mounting bracket 100.

Specifically, the first power member 510 includes a first motor 511 fixedly connected to the mounting frame 100, an axial direction of an output shaft of the first motor 511 is parallel to an axial direction of the outer rotating shaft 227, a second belt transmission component 512 for connecting the output shaft of the first motor 511 and a driving end of the outer rotating shaft 227 is disposed between the output shaft of the first motor 511 and the driving end of the outer rotating shaft 227, and the second belt transmission component 512 is used for transmitting power of the output shaft of the first motor 511 to the outer rotating shaft 227 and driving the outer rotating shaft 227 to rotate around an axis of the second belt transmission component, so that the first motor 511.

Specifically, the second power member 520 includes a transmission main shaft 521 located below the support plate 231 and rotatably disposed on the support plate 231 and the mounting frame 100, and a second motor 522 fixedly disposed on the mounting frame 100 and vertically disposed in the axial direction, the axial direction of the transmission main shaft 521 is parallel to the axial direction of the inner rotating shaft 215, a third belt transmission component 523 for connecting the output shaft of the second motor 522 and the driving end of the transmission main shaft 521 is disposed between the output shaft of the second motor 522 and the driving end of the transmission main shaft 521, the third belt transmission component 523 is used for transmitting the power on the output shaft of the second motor 522 to the transmission main shaft 521 and driving the transmission main shaft 521 to rotate around the self axial direction, the driving end of the inner rotating shaft 215 extends downward from the driving end of the outer rotating shaft 227, and a continuously.

More specifically, the stepless speed change assembly includes a small pulley 524 coaxially sleeved on the transmission main shaft 521, and a large pulley 525 coaxially sleeved on the driving end of the inner rotating shaft 215, the small pulley 524 and the large pulley 525 are both two conical disc bodies to form a V-shaped structure, the small pulley 524 and the transmission main shaft 521 form a spline connection fit, the small pulley 524 can slide up and down along the transmission main shaft 521, the large pulley 525 and the inner rotating shaft 215 form a spline connection fit, the large pulley 525 can slide up and down along the inner rotating shaft 215, a steel belt 526 for connecting the small pulley 524 and the large pulley 525 in a winding manner is arranged between the small pulley 524 and the large pulley 525, in order to support the large pulley 525, a detachable limiting boss 525a is arranged on the outer circular surface of the driving end of the inner rotating shaft 215, the limiting boss 525a is positioned below the large pulley 525, a is movably sleeved outside the inner rotating shaft 215, and one end of the supporting spring 525b abuts against the, The other end is inconsistent with big pulley 525 and the elasticity of supporting spring 525b is pointed to big pulley 525 by spacing boss 525a all the time, in order to can change the drive ratio between little pulley 524 and the big pulley 525, the movable sleeve is equipped with can carry out gliding L type link 527 along its axial on the transmission main shaft 521, link 527 includes horizontal segment and vertical section and horizontal segment and transmission main shaft 521 cooperate, the horizontal segment of link 527 with the first half fixed connection of little pulley 524, slide from top to bottom through drive link 527, change the drive ratio between pulley 524 and the big pulley 525, thereby realize the variable speed.

More specifically, the continuously variable transmission assembly further comprises an adjustable speed motor 528 fixedly connected with the mounting frame 100, the adjustable speed motor 528 is a stepping motor, an axial direction of an output shaft of the adjustable speed motor 528 is perpendicular to an axial direction of the transmission main shaft 521, an eccentric cam 529b is coaxially and fixedly sleeved on the output shaft of the adjustable speed motor 528, a horizontal flat groove 529a is formed in a vertical section of the linkage frame 527, a driving end of the eccentric cam 529b is connected with the output shaft of the adjustable speed motor 528, an output end of the eccentric cam 529b is inserted into the flat groove 529a, the output end of the eccentric cam 529b and the horizontal groove 529a form sliding guide fit, and the linkage frame 527 is driven by the adjustable speed.

In the working process of the second power member 520, the third belt transmission component 523 transmits the power of the second motor 522 to the transmission main shaft 521, the stepless speed change component transmits the power on the transmission main shaft 521 to the inner rotating shaft 215 and drives the inner rotating shaft 215 to rotate around the axis of the second motor, if the inner rotating shaft 215 needs to be accelerated, the speed regulation motor 528 drives the linkage frame 527 to move downwards, the linkage frame 527 drives the upper half part of the small pulley 524 to slide downwards and the small pulley 524 extrudes the steel belt 526, the support spring 525b enables the large pulley 525 to follow up, the transmission ratio between the small pulley 524 and the large pulley 525 is increased, and the rotating speed of the inner rotating shaft 215 is increased; if the inner rotating shaft 215 needs to be decelerated, the link 527 is driven by the speed regulating motor 528 to move upwards, the link 527 drives the upper half part of the small pulley 524 to slide upwards, the support spring 525b enables the large pulley 525 to follow and extrude the steel belt 526, the transmission ratio between the small pulley 524 and the large pulley 525 is reduced, and the rotating speed of the inner rotating shaft 215 is decelerated.

The purpose of the speed change of the inner rotating shaft 215 is that on one hand, the dewatering tray 214 needs to be driven to rotate at a low speed firstly, so that the water separation core in the moist concentrate is discharged from the sieve hole 214a, and then the dewatering tray 214 needs to be driven to rotate at a high speed, so that the dewatered concentrate centrifugally moves and flies out from the opening of the dewatering tray 214; on the other hand, because the different types of concentrates have different densities and different adhesion degrees in a wet state, the rotating speed of the inner rotating shaft 215 needs to be adjusted, so that the different types of concentrates can be centrifugally flown out.

Claims

1. The utility model provides a tower water concentration concentrate desiccator which characterized in that: which comprises a mounting frame, a drying device fixedly arranged on the mounting frame, an input device, an output device and a power driving device, wherein the drying device comprises a primary drying mechanism which is arranged from top to bottom in sequence, the input device is used for conveying moist concentrate to the input end of the primary drying mechanism, the concentrate sequentially passes through the primary drying mechanism, the air-drying mechanism and the secondary drying mechanism, the secondary drying mechanism discharges the dried concentrate to the output device and discharges the dried concentrate outwards through the output device, the primary drying mechanism is used for performing centrifugal dehydration and primary drying treatment on the concentrate, the air-drying mechanism is used for performing air-drying treatment on the concentrate, the secondary drying mechanism is used for performing secondary drying treatment on the concentrate, and the power driving device is used for providing driving power for the primary drying mechanism, the air-drying mechanism and the secondary drying mechanism;

2. The tower type water-concentration concentrate dryer as claimed in claim 1, characterized in that: the air drying mechanism comprises an outer cone and an inner cone which are coaxially arranged with openings at the upper end and the lower end, the sizes of the openings of the outer cone and the inner cone are gradually increased from bottom to top along the vertical direction, the taper of the outer cone and the taper of the inner cone are equal, the outer cone is sleeved outside the inner cone, an annular discharging channel II is formed between the outer cone and the inner cone, the discharging channel II is gradually narrowed from top to bottom along the vertical direction, the top end of the outer cone is coaxially and fixedly connected with the bottom end of the outer cylinder, the inner cone is coaxially and fixedly connected with the lower end surface of a supporting plate, the top end of the discharging channel II is communicated with the bottom end of a discharging channel I, a supporting cylinder for plugging the opening at the lower end of the inner cone is coaxially and fixedly arranged, the stacking height of the supporting cylinder and the inner cone is equal to the height of the outer cone, an annular sliding plate is coaxially and fixedly arranged on the, the air drying mechanism further comprises an outer rotating shaft which is coaxially rotatably sleeved outside the inner rotating shaft, a driving end of the outer rotating shaft vertically extends downwards and is connected with a power driving device, an output end of the outer rotating shaft vertically extends upwards into the inner conical cylinder, and the outer rotating shaft is rotatably connected and matched with the inner conical cylinder and the supporting cylinder, the fan is coaxially and fixedly sleeved on the output end of the outer rotating shaft, the supporting cylinder is provided with an air inlet which penetrates up and down and is parallel to the axial direction of the supporting cylinder, and the air inlet is communicated with the outside air.

3. The tower type water-concentration concentrate dryer as claimed in claim 1, characterized in that: the secondary drying mechanism comprises a supporting plate fixedly connected with the mounting frame, a drying disc coaxially movably sleeved outside the outer rotating shaft is fixedly arranged on the upper end face of the supporting plate, an opening of the drying disc is upward, an annular sealing cover coaxially and fixedly connected with the opening is arranged at the opening, a speed reduction transmission component with an annular structure is coaxially arranged in the drying disc, a mounting ring with a thin-wall structure is coaxially sleeved on the outer circular surface of the speed reduction transmission component, a rectangular scraper blade which extends upward and is contacted with the inner wall of the drying disc is arranged on the outer circular surface of the mounting ring, the width direction of the scraper blade is vertically arranged, the scraper blade is attached to the disc bottom of the drying disc, the scraper blade is provided with a plurality of scraper blades and is arranged in an array along the circumferential direction of the mounting ring, a material storage groove is formed between the adjacent scraper blades, the diameter of the mounting ring is smaller than that of the opening of, wherein the bottom end of the outer cone cylinder is fixedly connected with the sealing cover, and the supporting cylinder is fixedly connected with the speed reduction transmission member;

4. The tower type water-concentration concentrate dryer as claimed in claim 3, characterized in that: the speed reduction transmission component comprises a fixed disk which is fixedly connected with the bottom of the drying disk and coaxially and movably sleeved outside the outer rotating shaft, a driving gear is rotatably embedded in the fixed disk, the driving gear is coaxially and fixedly sleeved on the outer rotating shaft, a driven gear ring is coaxially and movably arranged between the fixed disk and the mounting ring and is an inner gear ring, transmission gears which are axially parallel to the axial direction of the driving gear are further embedded in the upper end face of the fixed disk, the transmission gears are arranged in an array mode along the circumferential direction of the fixed disk, the transmission gears are located between the driving gear and the driven gear ring and are meshed with the driving gear and the driven gear ring, the outer circular face of the driven gear ring is in key connection with the mounting ring, the diameter of the driving gear is smaller;

5. The tower type water-concentration concentrate dryer as claimed in claim 1, characterized in that: the input device is fixedly connected with the mounting frame and positioned above the sealing cap, the input device comprises a rectangular fixing frame fixedly connected with the mounting frame, a driving roller and a driven roller which are arranged at intervals are arranged on the fixing frame in a rotating mode, the driving roller and the driven roller are arranged at the same height, the axial directions of the driving roller and the driven roller are parallel to the tangential direction of the circumference of the outer barrel body, a conveying belt wound between the driving roller and the driven roller is arranged between the driving roller and the driven roller, a hopper fixedly connected with the fixing frame is arranged above the input end of the conveying belt, the output end of the conveying belt is positioned above the sealing cap, a hopper is arranged between the driving roller and the driven roller, the input end of the hopper is connected with the output end of the ore dressing equipment and used for receiving wet concentrate discharged by the ore dressing equipment, the output end of the hopper, the input port of the funnel is connected with the output end of the conveyer belt, the output port is communicated with the sealing cap, and the communicated position is positioned right above the conical tip;

6. The tower type water-concentration concentrate dryer as claimed in claim 1, characterized in that: the output device is fixedly connected with the mounting frame and is positioned below the secondary drying mechanism, the output device comprises a rectangular discharge channel which is obliquely arranged and has two open ends, the discharge channel is gradually obliquely and downwards arranged from an input port to an output port, the inclination angle is 30-45 degrees, the input port of the discharge channel is vertically upwards and is positioned right below a discharge pipe, the output port of the discharge pipe is communicated with the input port of the discharge channel, and the output port of the discharge channel is obliquely arranged along the inclination direction and points to a concentrate stacking point;

7. The tower type water-concentration concentrate dryer as claimed in claim 1, characterized in that: the power driving device comprises a first power component for driving the outer rotating shaft to rotate at a constant speed and a second power component for driving the inner rotating shaft to rotate at a variable speed, and the first power component and the second power component are fixedly connected with the mounting frame;

8. The tower type water-concentration concentrate dryer as claimed in claim 7, characterized in that: the second power component comprises a transmission main shaft which is positioned below the supporting plate and is rotatably arranged on the supporting plate and the mounting frame, and a second motor which is fixedly arranged on the mounting frame and is vertically arranged in the axial direction, the axial direction of the transmission main shaft is parallel to the axial direction of the inner rotating shaft, a third belt transmission component for connecting the second motor and the transmission main shaft is arranged between an output shaft of the second motor and a driving end of the transmission main shaft, the third belt transmission component is used for transmitting power on the output shaft of the second motor to the transmission main shaft and driving the transmission main shaft to rotate around the axial direction of the third belt transmission component, the driving end of the inner rotating shaft extends downwards from the driving end of the outer rotating shaft, and.

9. The tower type water-concentration concentrate dryer of claim 8, characterized in that: the stepless speed change assembly comprises a small pulley coaxially sleeved on a transmission main shaft and a large pulley coaxially sleeved on a driving end of an inner rotating shaft, wherein the small pulley and the large pulley are both of a V-shaped structure formed by two conical disc bodies, the small pulley and the transmission main shaft form spline connection fit, the small pulley can slide up and down along the transmission main shaft, the large pulley and an inner rotating shaft form spline connection fit, the large pulley can slide up and down along the inner rotating shaft, a steel belt for connecting the small pulley and the large pulley in a winding manner is arranged between the small pulley and the large pulley, a detachable limiting boss is arranged on the outer circular surface of the driving end of the inner rotating shaft and is positioned below the large pulley, a supporting spring is movably sleeved outside the inner rotating shaft, one end of the supporting spring is abutted against the limiting boss, the other end of the supporting spring is abutted against the large pulley, the elastic force of the supporting spring is always directed to the large pulley by the limiting boss, and an L, the linkage frame comprises a horizontal section and a vertical section, the horizontal section is matched with the transmission main shaft, and the horizontal section of the linkage frame is fixedly connected with the upper half part of the small pulley;

the stepless speed change assembly further comprises a speed regulating motor fixedly connected with the mounting frame, the speed regulating motor is a stepping motor, the axial direction of an output shaft of the speed regulating motor is perpendicular to the axial direction of the transmission main shaft, an eccentric cam is coaxially and fixedly sleeved on the output shaft of the speed regulating motor, a flat groove which is horizontally arranged is formed in the vertical section of the linkage frame, the driving end of the eccentric cam is connected with the output shaft of the speed regulating motor, the output end of the eccentric cam is inserted into the flat groove, and the eccentric cam and the flat groove form sliding guide fit along the horizontal direction.