CN218653308U

CN218653308U - Non-flocculation stepping type composite pressure-bearing ultrafine tailing slurry dry-discharge device

Info

Publication number: CN218653308U
Application number: CN202222516842.5U
Authority: CN
Inventors: 董忠; 董永豪; 乔宁
Original assignee: Sishui Huifeng Agricultural Development Engineering Co ltd
Current assignee: Sishui Huifeng Agricultural Development Engineering Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-03-21
Anticipated expiration: 2032-09-22

Abstract

The utility model discloses a non-flocculation stepping composite pressure-bearing superfine tailing slurry dry discharging device, which comprises a frame, and a combined filter belt running device, a same-speed sealed conveying belt device, a negative pressure vacuum power device, a compressed air power device, a high-frequency vibration platform device and a double-belt conveyor included angle mechanical rolling device which are arranged on the frame; the same-speed sealing conveyor belt device is arranged in the combined filter belt running device and is attached to the lower side of the combined filter belt running device; the utility model provides a novel filter device for horizontal compound filter belt stepping type negative pressure water filtration and rolling dry discharge; the process not only can rapidly filter the tailing slurry without adding a flocculating agent, but also can effectively control the recovery rate of fine particles; meanwhile, the filtered pug can be mechanically extruded, so that the water content in the filtered pug is reduced, and finally the low-water-content qualified raw material which meets the requirements of the building material industry is obtained.

Description

Non-flocculation stepping type composite pressure-bearing ultrafine tailing slurry dry-discharge device

Technical Field

The utility model relates to a mud is arranged the device futilely, specifically indicates a superfine tailing mud of compound pressure-bearing of non-flocculation marching type is arranged the device futilely.

Background

With the improvement and deepening of the comprehensive utilization technology of tailings, the wet processing technology of building aggregate becomes one of the mainstream production technologies of fine building aggregate; however, in the process of processing the building material aggregate by the tailing wet method, all process water is recycled, and the addition of the flocculating agent directly causes the increase of the flocculating agent residue in the circulating water, thereby seriously affecting the quality of concrete. Especially, the ultrafine tailings (saw mud and stone powder) generated by granite building material processing enterprises are used for processing ALC building materials, calcium silicate building materials or siliceous stone powder raw materials of ceramic building materials, so that the flocculating agent has stricter control requirements on harmful components; when the silicon-based raw material is processed in ALC building material, calcium silicate building material or ceramic building material industry, the silicon-based raw material is produced in a workshop and has no outdoor transportation requirement, so that the silicon-based raw material is not required to be filtered and drained, and only a certain concentration is required to be controlled; when the superfine tailing slurry is used for processing siliceous raw materials, the requirements on the water content are strict as well as the flocculant cannot be added. At the present stage, all siliceous stone powder processing enterprises mostly utilize a sedimentation tank to carry out sedimentation treatment on tailing slurry, and the water content of the high-water-content stone powder slurry after sedimentation is controlled by natural modes such as airing, so that the production efficiency is low, and secondary pollution is more easily caused; in addition, like the utility model patent of publication No. CN213555540U, the patent name is tailing dry row system, it only sets up a filter pressing device and can only carry out a filter-pressing process, causes easily that the filtration is incomplete, can not satisfy the user demand.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a technical scheme does: a non-flocculation stepping composite pressure-bearing superfine tailing slurry dry discharge device comprises a rack, and a combined filter belt running device, a same-speed sealed conveying belt device, a negative pressure vacuum power device, a compressed air power device, a high-frequency vibration platform device and a double-belt conveyor included angle mechanical rolling device which are arranged on the rack; the same-speed sealing conveyor belt device is arranged in the combined filter belt running device and is attached to the lower side of the combined filter belt running device; the negative pressure vacuum power device is arranged outside the combined filter belt running device and is positioned at the lower part of the same-speed sealed conveying belt device; the compressed air power device is arranged on the combined filter belt operating device; the high-frequency vibration platform device is arranged outside the combined filter belt running device and is attached to the lower part of the combined filter belt running device, and meanwhile, the high-frequency vibration platform device is arranged on one side of the negative pressure vacuum power device along the reverse direction of the operation of the combined filter belt running device; the double-belt conveyor included angle mechanical rolling device is arranged on the combined filter belt running device and is arranged on one side of the same-speed sealed conveyor belt device along the positive running direction of the combined filter belt running device.

Compared with the prior art, the utility model the advantage lie in:

in order to overcome the defects that the superfine tailings are seriously lost and have higher water content after passing through a draining device under the working condition that no flocculating agent is added in the existing filtering dry-type draining technology, the utility model provides a novel filtering device for horizontal compound type filter belt stepping negative pressure water filtration and rolling dry draining; the process not only can rapidly filter the tailing slurry without adding a flocculating agent, but also can effectively control the recovery rate of fine particles; meanwhile, the filtered pug can be mechanically extruded, so that the water content in the filtered pug is reduced, and finally the low-water-content qualified raw material which meets the requirements of the building material industry is obtained.

(1) The filter belt is of a top-return structure: the process that produces and the unrestrained process that leads to of solid particle is complicated in order to reduce the filter belt and wash and jetting to and can have enough spaces installation pressure-bearing belt feeder etc. device, the utility model discloses pioneering nature set up the filter belt operating interval in the bottom of complete equipment, accomplish the filter belt after the filter-pressing dry run and pass through the bend wheel and change direction, return the feed district from the top, realized that the filter belt washes, the direct effect that falls into the high-frequency vibration district filter belt of jetting residue.

(2) Three-wheel rolling filter belt dehydration device: three straight carrier rollers are arranged in an inverted 'product' shape, the distance between a single straight carrier roller and a double straight carrier roller is adjustable, and a filter belt passes through the device, so that the rapid dehydration can be realized.

(3) Same-speed double-conveyor belt sealing device: in order to strengthen the negative pressure dehydration effect, reduce the problem that the negative pressure filtration efficiency reduces under the condition that the filtering layer top surface does not have the bright water, two strip conveyer belt edge laminating about this device pioneering nature's adoption forms encapsulated situation, realizes the airtight in negative pressure space, has promoted the filter effect, effectively reduces material moisture content.

(4) Double belt conveyor contained angle pressure device: the mud layer formed after negative pressure filtration on the filter belt passes through an upper belt conveyor and a lower belt conveyor which are arranged at the same speed and have a certain included angle, and the included angle formed by the belt conveyors is relied on to physically extrude the water-containing materials, so that the dehydration and dry discharge of the high-content cement materials are quickly realized, the water content of mud cakes is effectively reduced, and the mud cakes meet the product requirements.

(5) High-frequency vibration platform dewatering device: because the multifilament filter belt adds the filter bed texture that geotechnological cloth formed fine and close, under the effect of no external force, the ordinary pressure dehydration effect is not good, and this device adopts the high-frequency vibration platform laminating filter belt earlier at the feed process, realizes the high-frequency vibration of filter belt, destroys water surface tension through high-frequency vibration, realizes quick dehydration.

Drawings

Fig. 1 is a schematic structural diagram of the non-flocculation stepping composite pressure-bearing ultrafine tailing slurry dry discharge device.

Fig. 2 is a schematic structural diagram of a combined filter belt operating device in the non-flocculation stepping type composite pressure-bearing superfine tailing slurry dry-discharge device.

Fig. 3 is a schematic structural view of a deluge distributor in the non-flocculation stepping composite pressure-bearing superfine tailing slurry dry-discharge device.

Fig. 4 is a schematic structural diagram of a three-wheel rolling dewatering device in the non-flocculation stepping composite pressure-bearing superfine tailing slurry dry-discharge device.

Fig. 5 is a schematic structural view of a same-speed sealing conveyer belt device in the non-flocculation stepping composite pressure-bearing superfine tailing slurry dry-discharge device of the utility model.

Fig. 6 is a schematic structural view of a negative pressure vacuum power device in the non-flocculation stepping composite pressure-bearing superfine tailing slurry dry discharging device.

Fig. 7 is a schematic structural diagram of a compressed air power device in the non-flocculation stepping type composite pressure-bearing superfine tailing slurry dry-discharge device.

Fig. 8 is a schematic structural diagram of a high-frequency vibration platform device in the non-flocculation stepping composite pressure-bearing superfine tailing slurry dry-discharge device.

Fig. 9 is a schematic structural diagram of a double-belt type conveyor included angle mechanical rolling device in the non-flocculation stepping composite pressure-bearing superfine tailing slurry dry-discharge device.

Fig. 10 is a schematic structural diagram of a high-pressure water washing device in the non-flocculation stepping composite pressure-bearing superfine tailing slurry dry-discharge device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "set", "mounted", "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The embodiment is as follows:

with reference to the attached drawing 1, the non-flocculation stepping composite pressure-bearing ultrafine tailing slurry dry discharging device comprises a rack, and a combined filter belt running device A, a same-speed sealed conveying belt device B, a negative pressure vacuum power device C, a compressed air power device D, a high-frequency vibration platform device E and a double-belt conveyor included angle mechanical rolling device F which are arranged on the rack; the same-speed sealing conveyer belt device B is arranged in the combined filter belt running device A and is attached to the lower side of the combined filter belt running device A; the negative pressure vacuum power device C is arranged outside the combined filter belt running device A and is positioned at the lower part of the same-speed sealed conveying belt device B; the compressed air power device D is arranged on the combined filter belt operating device A; the high-frequency vibration platform device E is arranged outside the combined filter belt running device A and is attached to the lower part of the combined filter belt running device A, and meanwhile, the high-frequency vibration platform device E is arranged on one side of the negative pressure vacuum power device C in the reverse direction of the operation of the combined filter belt running device A; the double-belt conveyor included angle mechanical rolling device F is arranged on the combined filter belt operating device A and is arranged on one side of the same-speed sealed conveyor belt device B along the positive operating direction of the combined filter belt operating device A.

With reference to fig. 2, the combined filter belt running device a comprises a main composite filter belt 1, wherein one end of the main composite filter belt 1 is provided with a filter belt driving head wheel 2, the other end of the main composite filter belt 1 is provided with a filter belt tail wheel 3, the main composite filter belt 1 is driven to rotate by the filter belt driving head wheel 1 and the filter belt tail wheel 2, one end of the main composite filter belt 1, which is provided with the filter belt driving head wheel 2, is internally provided with a plurality of head-end direction-changing wheels 4, so that the head end of the main composite filter belt 1 forms a discharging area G, one end of the main composite filter belt 1, which is provided with the filter belt tail wheel 3, is internally provided with a plurality of tail-end direction-changing wheels 5, and the bottom of the main composite filter belt 1 is further provided with double-expanding-head carrier rollers 6 corresponding to the tail-end direction-changing wheels 5;

with reference to fig. 2 and 3, the device further comprises a rain distributor 7 and a direct filtration water accumulation tank 8, wherein the rain distributor 7 is arranged in the main composite filter belt A and arranged on the front side of the high-frequency vibration platform device E along the running direction of the combined filter belt running device A, a slurry feeding pipe 8 is arranged at the upper part of the rain distributor 7, the bottom of the slurry feeding pipe 8 is connected with the rain distributor 7 through a slurry regulating valve 9, the rain distributor 7 comprises a rain feeding box 701 connected with the slurry regulating valve 9, and a punching rain distribution plate 702 is arranged at the bottom of the rain feeding box 701; the direct filtration water accumulation tank 33 is arranged at the bottom of the main composite filter belt 1 and covers the deluge distributor 7 and the high-frequency vibration platform device E.

Referring to fig. 4, a plurality of sets of three-wheel rolling dewatering devices 10 are arranged on the main composite filter belt 1, each three-wheel rolling dewatering device 10 comprises a first dewatering roller 1001, a second dewatering roller 1002 and a third dewatering roller 1003, the first dewatering roller 1001 is arranged on the upper portion of the main composite filter belt 1, the second dewatering roller 1002 and the third dewatering roller 1003 are arranged on the lower portion of the main composite filter belt 1 and located on the lower portion of the first dewatering roller 1001, the main composite filter belt 1 is made to form a triangular shape, and a rolling water collecting tank 11 is arranged at the bottom of each three-wheel rolling dewatering device 10.

With reference to fig. 5, the same-speed sealing conveyer belt device B includes a rubber conveyer belt 12, one end of the rubber conveyer belt 12 is provided with a conveyer belt driving head wheel 13, the other end is provided with a conveyer belt anti-slip tail wheel 14, the conveyer belt driving head wheel 13 and the conveyer belt anti-slip tail wheel 14 drive the rubber conveyer belt 12 to rotate, a sealing space is formed between the two sides of the lower layer of the main composite filter belt 1 contacting the rubber conveyer belt 12 and the rubber conveyer belt 12, the rotating direction of the rubber conveyer belt 12 is the same as that of the main composite filter belt 1, and a plurality of straight supporting rollers 15 are arranged on the lower side of the part of the main composite filter belt 1 close to the conveyer belt driving head wheel 12.

With reference to fig. 6, the negative pressure vacuum power device C includes a plurality of vacuum sub-chamber water collecting tanks 16 arranged along the positive rotation direction of the main composite filter belt 1, the vacuum sub-chamber water collecting tanks 16 are provided with a first electromagnetic pulse valve 17 and a vacuum drain valve 18, the bottom of the vacuum drain valve 18 is connected with a filtrate guide pipe 19, and the first electromagnetic pulse valve 17 is connected with a vacuum pump power system through a negative pressure vacuum pipeline 20.

With reference to fig. 7, the compressed air power device D includes a compressed air purging box 21, a flexible splash-proof cloth cover 22, a second electromagnetic pulse valve 23, and an air compressor power system, the compressed air purging box 21 and the flexible splash-proof cloth cover 22 are correspondingly disposed on the upper surface and the lower surface of the main composite filter belt 1, and the top of the compressed air purging box 21 is connected with the air compressor power system through the second electromagnetic pulse valve 23.

With reference to fig. 8, the high-frequency vibration platform device E comprises a high-frequency vibration platform 24 disposed at the bottom of the main composite filter belt 1, four corners of the bottom of the high-frequency vibration platform 24 are respectively connected with supporting legs 32 through damping springs 25, the high-frequency vibration platform 24 is a mesh platform with punched holes, and a high-frequency vibration motor is disposed at the lower part of the mesh platform.

With reference to fig. 9, the double-belt conveyor included angle mechanical rolling device F includes a fixed conveyor 26 disposed at the bottom of the main composite filter belt and an adjustable conveyor 27 disposed at the upper portion of the main composite filter belt 1, both the fixed conveyor 26 and the adjustable conveyor 27 include a pressure-bearing conveyor belt 2601, conveyor belt driving head wheels 2602 disposed at both ends of the pressure-bearing conveyor belt 2601, and conveyor belt direction-changing tail wheels 2603, the rotation directions of the fixed conveyor 26 and the adjustable conveyor 27 are the same as the rotation direction of the main composite filter belt 1, one end of the adjustable conveyor 27 is rotatably connected to the frame, and the other end is provided with a hydraulic lifting device to adjust the distance between the adjustable conveyor 27 and the main composite filter belt 1; a filter cake discharge hopper 28 is arranged in a discharge area G at the head end of the main composite filter belt 1, a dry discharge filter cake discharge device 29 is arranged at the bottom of the filter cake discharge hopper 28, and a water collecting tank 30 is arranged at the bottom of the double-belt conveyor included angle mechanical rolling device F.

Referring to fig. 10, the compressed air power device D is provided with a high pressure water flushing device 31 along the reverse direction of the operation of the combined filter belt operation device a, and comprises a high pressure water flushing cover 3101 arranged on the upper part of the main composite filter belt 1 and a splash-proof water collecting cover 3102 arranged on the lower part of the main composite filter belt 1, and a plurality of high pressure water nozzles 3103 arranged in the high pressure water flushing cover 3101 and connected with a high pressure water pump.

When the device is operated, the device comprises the following steps:

the method comprises the following steps: material distribution and first-stage high-frequency dehydration: conveying the superfine tailing slurry to a deluge-type cloth hopper through a slurry discharge pipe, and uniformly discharging the tailing slurry to a composite horizontal filter belt (a main composite filter belt) formed by combining a fiber multifilament filter belt and geotextile through a punching deluge-type cloth plate; a high-frequency vibration table is arranged below the main composite filter belt, the vibration table surface is in a punching net shape, and under high-frequency vibration, first-stage high-frequency vibration water filtration of tailing slurry is completed within a certain time period; and (3) temporarily closing the material distribution system, starting the filter belt driving device, conveying the filter belt to the next procedure, restarting the material distribution system, repeating the above work, completing the material distribution of the next section of the filter belt and the first stage of dehydration procedure, and repeating the operation in sequence.

Step two: and (3) secondary negative pressure filtration: when the tailing solid particles on the filter belt reach a certain thickness, the filter belt driving device is started, and the filter belt which completes the first-stage water filtration is conveyed to a negative-pressure vacuum operation area; after the filter belt is conveyed, the negative pressure vacuum power device is started by the automatic control system to vacuumize the vacuum chamber water collecting tank below the filter belt under negative pressure, and the negative pressure forming process is the process of secondary filtration of the concentrated slurry on the filter belt after the primary filtration is finished. The filtrate formed by the second-stage filtration falls into the corresponding vacuum chamber water collecting tank for temporary storage, when the filtrate reaches a certain liquid level, the system starts a vacuum drain valve of the system, the vacuum drain valve is closed after the filtrate accumulated in the chamber is emptied, and the next section of filter belt is used for conveying the filtered slurry for negative pressure filtration; during the second stage of filtration, because there is ponding on the mud, need not to implement and seal, can realize high-efficient filtration under the negative pressure state, this process is only negative pressure drainage, need not to seal.

Step three: third-stage sealing and negative pressure filtration: after the second-stage filtration is finished, the surface layer of the slurry is basically free of open water, so that after the second-stage filtration is finished, the main composite filter belt device is started, and when materials are conveyed to a pressure-bearing filtration process, another flat belt arranged at the top of the filter belt runs at the same speed and is mutually extruded with the folded two sides of the lower-layer composite filter belt to form a sealed space; after the main composite filter belt stops running, the control system starts the negative pressure vacuum power device of the process to realize secondary negative pressure filtration of the materials on the filter belt in a sealed state; in order to ensure the sealed negative pressure filtering effect, the process is longer than that of a second-stage filtering device by 1 time or more, and the slurry is subjected to repeated closed filtering to realize the maximum dehydration operation.

Step four: fourth-stage mechanical rolling and re-dewatering: the filter belt which completes the third-stage negative pressure filtration is output through a starting device to form a position of a belt conveyor on the upper layer of the sealing layer, and enters a mechanical rolling device with steel plate conveyor belts at the upper part and the lower part for mechanical forced dry discharge. The device bottom steel sheet band conveyer fixed mounting, top steel sheet band conveyer one end is fixed, and one end has hydraulic pressure elevating gear (not shown on the figure), can adjust two belt feeder belt clearances according to bed of material thickness, and the filter belt gets into the mechanical roll-in dehydration device who takes certain contained angle together with the material of accomplishing tertiary filtration, accomplishes the filtration of exerting pressure to the last one-level of material through pressure between the belt, and tailing pulp dehydration is done all the way.

Step five: discharging and discharging a filter cake: and the slurry filter cake rolled by the fourth-stage machine is conveyed to a driving head wheel along with a filter belt, and the discharging is realized by natural gravity and the stripping of a sweeper. Discharging the discharged mud cakes from the two sides of the filter belt fixing structure through a discharging hopper or other discharging devices to finish the discharging process.

Step six: a filter belt reverse high-pressure water washing process: because this device has innovated the filter belt and has turned to the device, the filter belt returns from the operation area top after accomplishing the unloading, and becomes fibre multifilament filter belt layer up, state that geotechnological cloth filter layer is down. When the composite filter belt in the reverse state runs to a high-frequency vibration dehydration region of the slurry, a high-pressure water backwashing procedure is carried out, and high-pressure water reversely cleans the filter belt through a spray head to clean fine particles penetrating into the filter cloth.

Step seven: three-roller dehydration and high-pressure air injection: the filter belt washed by the reverse high-pressure water is rolled by a three-roller with an adjustable gap, the reverse washing water is squeezed and cleaned, then the high-pressure air injection process is carried out, and the geotextile on the bottom surface of the filter belt is blown to be fluffy by the high-pressure air, so that the dehydration efficiency is improved.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. A non-flocculation stepping composite pressure-bearing superfine tailing slurry dry discharge device is characterized by comprising a rack, a combined filter belt running device, a same-speed sealed conveying belt device, a negative pressure vacuum power device, a compressed air power device, a high-frequency vibration platform device and a double-belt conveyor included angle mechanical rolling device, wherein the combined filter belt running device, the same-speed sealed conveying belt device, the negative pressure vacuum power device, the compressed air power device, the high-frequency vibration platform device and the double-belt conveyor included angle mechanical rolling device are arranged on the rack; the same-speed sealing conveyor belt device is arranged in the combined filter belt running device and is attached to the lower side of the combined filter belt running device; the negative pressure vacuum power device is arranged outside the combined filter belt running device and is positioned at the lower part of the same-speed sealed conveying belt device; the compressed air power device is arranged on the combined filter belt operating device; the high-frequency vibration platform device is arranged outside the combined filter belt running device and is attached to the lower part of the combined filter belt running device, and meanwhile, the high-frequency vibration platform device is arranged on one side of the negative pressure vacuum power device along the reverse direction of the operation of the combined filter belt running device; the double-belt conveyor included angle mechanical rolling device is arranged on the combined filter belt running device and is arranged on one side of the same-speed sealed conveyor belt device along the positive running direction of the combined filter belt running device.

2. The non-flocculation stepping composite pressure-bearing ultrafine tailing slurry dry discharge device according to claim 1, wherein the combined filter belt running device comprises a main composite filter belt, one end of the main composite filter belt is provided with a filter belt driving head wheel, the other end of the main composite filter belt is provided with a filter belt tail wheel, the main composite filter belt is driven to rotate by the filter belt driving head wheel and the filter belt tail wheel, a plurality of head-end bend wheels are arranged at one end of the main composite filter belt provided with the filter belt driving head wheel, so that the head end of the main composite filter belt forms a discharge area, a plurality of tail-end bend wheels are arranged at one end of the main composite filter belt provided with the filter belt tail wheel, and double-expansion supporting rollers corresponding to the tail-end bend wheels are further arranged at the bottom of the main composite filter belt.

3. The non-flocculation stepping composite pressure-bearing ultrafine tailing slurry dry discharge device according to claim 1, further comprising a deluge distributor and a straight filtration water accumulation tank, wherein the deluge distributor is arranged in the main composite filter belt and arranged in front of the high-frequency vibration platform device along the running direction of the combined filter belt running device, a slurry feeding pipe is arranged at the upper part of the deluge distributor, the bottom of the slurry feeding pipe is connected with the deluge distributor through a slurry regulating valve, and the straight filtration water accumulation tank is arranged at the bottom of the main composite filter belt and covers the deluge distributor and the high-frequency vibration platform device; the deluge distributing device comprises a deluge feeding box connected with the slurry regulating valve, and a punching deluge distributing plate is arranged at the bottom of the deluge feeding box.

4. The non-flocculation stepping composite pressure-bearing ultrafine tailing slurry dry-discharge device according to claim 3, wherein a plurality of sets of three-wheel rolling dewatering devices are arranged on the main composite filter belt, each three-wheel rolling dewatering device comprises a first dewatering roller, a second dewatering roller and a third dewatering roller, the first dewatering roller is arranged on the upper portion of the main composite filter belt, the second dewatering roller and the third dewatering roller are arranged on the lower portion of the main composite filter belt and located on the lower portion of the first dewatering roller, so that a triangular shape is formed, and a rolling water collecting tank is arranged at the bottom of each three-wheel rolling dewatering device.

5. The non-flocculation stepping composite pressure-bearing ultrafine tailing slurry dry discharging device according to claim 1, wherein the same-speed sealing conveyer belt device comprises a rubber conveyer belt, one end of the rubber conveyer belt is provided with a conveyer belt driving head wheel, the other end of the rubber conveyer belt is provided with a conveyer belt anti-skid tail wheel, the conveyer belt driving head wheel and the conveyer belt anti-skid tail wheel drive the rubber conveyer belt to rotate, the lower layer of the main composite filter belt in contact with the rubber conveyer belt is folded at two sides of the lower layer to form a sealing space with the rubber conveyer belt, the rotation direction of the rubber conveyer belt is the same as that of the main composite filter belt, and a plurality of straight supporting rollers are arranged on the lower side of the part of the main composite filter belt close to the conveyer belt driving head wheel.

6. The non-flocculation stepping composite pressure-bearing ultrafine tailing slurry dry discharge device according to claim 1, wherein the negative pressure vacuum power device comprises a plurality of vacuum chambered water collection troughs arranged along the positive rotation direction of the main composite filter belt, the vacuum chambered water collection troughs are provided with a first electromagnetic pulse valve and a vacuum drain valve, the bottom of the vacuum drain valve is connected with a filtrate guide pipe, and the first electromagnetic pulse valve is connected with a vacuum pump power system through a negative pressure vacuum pipeline.

7. The non-flocculation stepping composite pressure-bearing superfine tailing slurry dry discharge device according to claim 1, wherein the compressed air power device comprises a compressed air blowing box, a flexible splash guard, a second electromagnetic pulse valve and an air compressor power system, the compressed air blowing box and the flexible splash guard are correspondingly arranged on the upper surface and the lower surface of the main composite filter belt, and the top of the compressed air blowing box is connected with the air compressor power system through the second electromagnetic pulse valve.

8. The non-flocculation stepping composite pressure-bearing ultrafine tailing slurry dry discharge device according to claim 1, wherein the high-frequency vibration platform device comprises a high-frequency vibration platform arranged at the bottom of the main composite filter belt, four corners of the bottom of the high-frequency vibration platform are respectively connected with supporting legs through damping springs, the high-frequency vibration platform is a perforated mesh platform, and a high-frequency vibration motor is arranged at the lower part of the high-frequency vibration platform.

9. The non-flocculation stepping composite pressure-bearing ultrafine tailing slurry dry discharging device according to claim 1, wherein the double-belt conveyor included angle mechanical rolling device comprises a fixed conveyor arranged at the bottom of the main composite filtering belt and an adjustable conveyor arranged at the upper part of the main composite filtering belt, the fixed conveyor and the adjustable conveyor respectively comprise a pressure-bearing conveying belt, a conveying belt driving head wheel and a conveying belt direction-changing tail wheel which are arranged at two ends of the pressure-bearing conveying belt, the rotating directions of the fixed conveyor and the adjustable conveyor are the same as the rotating direction of the main composite filtering belt, one end of the adjustable conveyor is rotatably connected with the frame, and the other end of the adjustable conveyor is provided with a hydraulic lifting device for adjusting the distance between the adjustable conveyor and the main composite filtering belt; and a filter cake discharge hopper is arranged in the discharge area at the head end of the main composite filter belt, a dry discharge filter cake discharge device is arranged at the bottom of the filter cake discharge hopper, and a water collecting tank is arranged at the bottom of the double-belt conveyor included angle mechanical rolling device.

10. The device of claim 1, wherein the compressed air power device sets up the high-pressure water washing device along the reverse direction of the operation of the combined filter belt operation device, and comprises a high-pressure water washing cover arranged on the upper portion of the main composite filter belt and a splash-proof water collecting cover arranged on the lower portion of the main composite filter belt, wherein a plurality of high-pressure hydraulic nozzles are arranged in the high-pressure water washing cover and connected with a high-pressure water pump.