Pipe bag type deep-cone thickening device for treating ore washing sewage under pressure

Abstract

The utility model discloses a pipe bag type deep-cone thickening device for treating ore washing sewage under pressure, which comprises a cloth bag maintenance steel structure and a deep-cone thickening structure which are arranged up and down, a grating net is arranged at the joint of the cloth bag maintenance steel structure and the deep-cone thickening structure, and a lower support frame steel structure is arranged outside the deep-cone thickening structure; a double-layer reverse osmosis structure is arranged on the inner side of the cloth bag maintenance steel structure, a feeding structure is arranged outside the deep-cone dense structure, and a mud layer scraping rake stirring structure is arranged at the bottom in the deep-cone dense structure; by adopting a double-layer inverted filter structure, most of fine particulate matters in sewage can be recovered through a physical method, so that the addition of chemical agents such as flocculants and the like is greatly reduced, and treated high-concentration slurry and overflow water can be directly reused for mineral separation production or ecological restoration of a mining area; pollution of chemical agent residues to soil and water is reduced, and the risk of secondary environmental pollution caused by sewage treatment is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of solid-liquid separation of mine dressing sewage, especially a combined solid-liquid separation technology combining the advantages of deep-cone thickener and geotextile tube, mainly used for the thickening processing of high-sand (mud) washing sewage and high-concentration washing slurry containing large particles, suitable for various application scenarios such as dressing washing sewage, building aggregate stone washing sewage, municipal engineering slurry disposal, industrial wastewater treatment of low organic particles, sludge dewatering and the like. BACKGROUND

[0002] The solid-liquid separation technology for mine is one of the important technologies in modern industry and environmental protection field, and is widely used in mine dressing, aggregate cleaning, municipal engineering, environmental protection and other industries. The traditional solid-liquid separation equipment for mine mainly includes filtration, filter pressing, gravity sedimentation and flotation methods. However, with the continuous development of mine industrial production and the improvement of environmental protection requirements, the traditional solid-liquid separation equipment for mine needs to add chemical agents such as flocculants when treating fine particle suspensions and high-concentration sludge, and these agents have more or less pollution risk to the environment, which does not meet the current environmental protection requirements. In addition, the current various thickening technologies for dressing sewage have low efficiency or high disposal cost, which does not meet the needs of continuous scale operation of mine enterprises, and the treatment of mine sewage has become one of the main technical problems restricting the development of the industry.

[0003] 1、Deep-cone thickener

[0004] The deep cone thickener is a widely used device for solid-liquid separation of mine wastewater. Its structure is similar to a rake thickener, but there are significant differences in specific dimensions. The deep cone thickener has a smaller diameter, a smaller cone angle (typically ≥60°), and a larger height-to-diameter ratio. Its working principle involves causing solid particles in the wastewater to form a high-concentration underflow under the influence of gravity, a certain height of sludge pressure, and water flow agitation. As the sludge layer height increases, the sludge pressure continuously increases, and through the squeezing and drainage action, the porosity gradually decreases, continuously increasing the underflow concentration of the slurry. This design provides the deep cone thickener with a large sedimentation space, enabling the production of high-concentration sediment and clear overflow water. The main body of the deep cone thickener is made of high-strength steel and includes an internal agitation device to prevent sludge from clumping during settling, which would affect the separation effect. However, since deep cone thickeners operate without pressure, experimental measurement methods are required to investigate the relationship between the thickener's underflow concentration and sludge layer height. When wastewater flow or concentration changes, the thickener cannot adjust in time according to the production status, often leading to wastewater directly entering the overflow tank or difficulty in controlling the underflow concentration, resulting in thickening unit failure. Furthermore, deep cone thickeners frequently encounter sludge blockage at the underflow outlet in practical applications. Studies have shown that there are two main reasons for sludge blockage at the bottom outlet: First, the increased concentration of solid particles in the wastewater causes the sludge deposition rate to exceed the discharge rate at the bottom outlet, resulting in excessively thick sludge buildup in the cone hopper. Since most existing deep cone thickeners have a vertical, inverted fan-shaped conical rake frame, excessive resistance after sludge solidification often leads to overload of the rake frame drive equipment, preventing the mixing and discharge from starting. Second, existing deep cone thickeners cannot accurately adapt to changes in wastewater concentration. To reduce the direct discharge of low-concentration sludge through the bottom outlet, most deep cone thickeners currently use intermittent mixing and discharge for bottom outlet discharge. When the mixing interval is too long, the sludge layer at the bottom outlet becomes too thick and solidifies, also causing overload of the rake frame drive equipment and preventing the mixing and discharge from starting. These problems not only affect the normal operation of deep cone thickeners but may also lead to decreased production efficiency and increased maintenance costs.

[0005] 2. Geotextile tubes

[0006] The geotextile tube dewatering process is a new type of slurry dewatering and solidification technology. The geotextile tube is formed by weaving high-tough polypropylene yarns and special sewing, and is a kind of woven flexible filter container with high pressure bearing, high corrosion resistance, high wear resistance, high strength and high permeability. The geotextile tube cloth has different levels of strength and permeability. The working principle is to use the filter structure and drainage performance of the equivalent pore size of the bag wall geotextile. Through the liquid pressure action in the bag and the tension of the bag wall, the water in the injected slurry is quickly discharged, and the solid particles in the slurry are retained in the bag, so as to achieve the effect of solid-liquid separation and sludge volume reduction. Although the geotextile tube dewatering process has many advantages such as low cost, convenient construction, stable operation, environmental protection and low consumption, strong adaptability and the like, due to the traditional geotextile tube device, the traditional geotextile tube device cannot realize continuous operation, and the dewatering time is long, the production efficiency is low, and it is not suitable for the working condition characteristics of the mine enterprise unit production sewage production, sewage concentration, continuous operation time and the like. Only suitable for cleaning and dredging, municipal roads, bridges, highways, airports, wharfs and other construction site infrastructure projects. At present, it is rarely used for mineral processing at home and abroad. Practical new type content

[0007] To solve the above technical problems, the technical scheme provided by the utility model is: a geotextile tube type deep cone thickening device for pressure treatment of washing mine sewage, comprising an upper and lower cloth bag maintenance steel structure and a deep cone thickening structure, a grid is arranged at the connection between the cloth bag maintenance steel structure and the deep cone thickening structure, and a lower support frame steel structure is arranged outside the deep cone thickening structure; a double-layer anti-infiltration structure is arranged on the inner side of the cloth bag maintenance steel structure, a feeding structure is arranged outside the deep cone thickening structure, and a sludge layer scraper stirring structure is arranged at the bottom of the deep cone thickening structure;

[0008] The cloth bag maintenance steel structure comprises a plurality of steel columns arranged perpendicularly in a circumferential direction at a certain angle, horizontal ring beams are uniformly and sealingly arranged on the steel columns from top to bottom, and a thickening bin structure is formed between the steel columns and the horizontal ring beams; a steel mesh is arranged on the inner wall of the thickening bin structure, and a double-layer anti-infiltration structure is additionally arranged on the inner side of the steel mesh;

[0009] The double-layer anti-infiltration structure comprises a coarse filter screen arranged on the upper part of the grid and a geotextile tube arranged in the thickening bin structure; the geotextile tube is arranged on the top surface of the wall of the thickening bin structure and forms a sealed whole with the deep cone thickening structure below;

[0010] The deep cone thickening structure comprises a lower cone, a sludge and sand collecting port is arranged on one side of the bottom of the lower cone, a straight cylinder bin connected with the thickening bin structure is arranged on the top of the lower cone, the grid is arranged on the top of the straight cylinder bin, an external annular overflow tank is arranged outside the top of the straight cylinder bin, and an overflow drainage port is arranged on one side of the external annular overflow tank; the sludge layer scraper stirring structure is arranged on the inner bottom of the lower cone;

[0011] The feeding structure comprises a horizontally arranged annular sewage inlet main pipe, which is arranged outside the straight silo of the deep-cone thickening structure and is located at the lower part of the annular overflow launder, a plurality of water inlet branch pipes are arranged in the lower cone at a certain angle from the annular sewage inlet main pipe, so that the liquid entering the lower cone from each water inlet branch pipe forms a cyclone, each water inlet branch pipe is additionally provided with an adjusting valve, and the annular sewage inlet main pipe is further connected with a water injection port structure.

[0012] Preferably, a plurality of pool top cover steel skeleton ring beams are arranged from outside to inside at the opening of the top of the thickening silo, the pool top cover steel skeleton ring beams are connected through a pool top cover steel skeleton, and a pool top steel wire mesh is arranged between the pool top cover steel skeleton and the pool top cover steel skeleton ring beams.

[0013] Preferably, a plurality of pool top guardrails are further arranged on the pool top cover steel skeleton ring beam of the outermost circle.

[0014] Preferably, a pipe bag top extension pipe opening is arranged at the top center of the cloth bag maintenance steel structure, and the pipe bag top extension pipe opening is provided with a geotube installation opening at the bottom.

[0015] Preferably, the lower support frame steel structure comprises a plurality of conical hopper support frames arranged outside the lower cone, and the conical hopper support frames are arranged in a polygonal shape to support the whole system.

[0016] Preferably, the mud layer scraper stirring structure comprises a driving motor arranged at the bottom of the lower cone, a speed change device in transmission connection with the driving motor, and a transmission shaft in transmission connection with the speed change device and extending into the inside of the lower cone, and a reverse conical shaftless impeller is connected to the transmission shaft.

[0017] Preferably, the water injection port structure is provided with a port-closed residue sedimentator at the lower part and a semispherical filter screen at the upper part, and a sewage inlet pipe is horizontally arranged at one side of the semispherical filter screen.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] (1) The geotube is vertically arranged

[0020] The utility model discloses a steel structure frame body in the cylinder type above the thickening device, and the geotube is fixed on the periphery of the thickening silo wall, forming a full-closed thickening device structure with the bottom being the steel structure conical hopper, the middle being the partial steel structure cylinder and the top being the geotube. The geotube is vertically arranged, which can reduce the filtration function loss of the bottom of the geotube caused by the mud and sand accumulation due to the horizontal laying, greatly increase the filtration area, and continuously produce the geotube.

[0021] (2) Deep cone thickening middle part annular feeding arrangement

[0022] The utility model discloses an annular uniform distribution feeding design is innovated, and through adjusting the valve on horizontal water inlet branch pipe, the water flow rate of each water inlet is kept consistent, and the included angle formed between the water inlet installation and the cylinder wall is utilized to make each water inlet water flow push each other, vortex is formed, and the settlement of the medium coarse particle in sewage is accelerated.

[0023] (3) Deep cone thickening bottom part reverse cone shaftless spiral blade arrangement

[0024] In order to thoroughly solve the traditional deep cone thickening device prone to pressure rake accident, the utility model discloses a reverse cone shaftless spiral blade design is innovated, namely, the reverse cone shaftless spiral blade is installed on the driving device at the bottom of the cone bucket, the forward or reverse rotation of the shaftless spiral blade is driven through the forward and reverse operation of the driving device, so that the pressing and compacting and stirring of the mud layer of the cone bucket wall are realized, and the risk of pressure rake accident caused by the consolidation of the mud layer is broken.

[0025] (4) Double-layer reverse filtration coarse separation layer design

[0026] The utility model discloses a metal short cylinder structure top is laid reverse filtration screen in the upper part of the cone bucket, the medium coarse particle in the mud slurry injected into the short cylinder and turned over under the action of cyclone is directly blocked in the bottom deep cone thickening device, and the first step medium coarse particle solid-liquid separation is realized.

[0027] (5) Pressure-bearing operation design

[0028] The traditional deep cone thickening device cannot operate under pressure, and all need normal pressure work, and can only realize solid-liquid separation by using water power and the gravity of particle matter itself. The utility model realizes the pressure-bearing operation of the deep cone thickening device, speeds up the mud layer compaction speed, can effectively improve the solid-liquid separation efficiency, reduces the concentration of thickened mud slurry, and effectively improves the equipment production efficiency.

[0029] (6) Harmless disposal and utilization

[0030] The utility model discloses a double-layer reverse filtration structure, and the vast majority of fine particle matters in sewage can be recovered by physical method, the addition of flocculating agent and other chemical agents is greatly reduced, the high concentration mud slurry and overflow water after treatment can be directly used for mineral separation production or mine ecological restoration, the pollution of chemical agent residues to soil and water is reduced, and the secondary environmental pollution risk caused by sewage disposal is avoided. This not only reduces the operation cost of enterprises, but also helps environmental protection. DRAWINGS

[0031] Figure 1 It is the internal structure schematic diagram of the pipe bag type deep cone thickening device of the utility model.

[0032] Figure 2 is the outer top structure schematic diagram of the pipe bag type deep cone thickening device for pressure treatment of washing mineral sewage.

[0033] Figure 3 is the outer structure schematic diagram of the pipe bag type deep cone thickening device for pressure treatment of washing mineral sewage.

[0034] Figure 4 is the inner top structure schematic diagram of the pipe bag type deep cone thickening device for pressure treatment of washing mineral sewage.

[0035] Figure 5 is the sewage flow schematic diagram of the pipe bag type deep cone thickening device for pressure treatment of washing mineral sewage.

[0036] Figure 6 is the water inlet branch pipe distribution schematic diagram of the pipe bag type deep cone thickening device for pressure treatment of washing mineral sewage. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0038] In the description of the embodiments of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In addition, if the terms "horizontal", "vertical", "overhanging" and the like appear, they do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0040] In the description of the embodiments of the present application, "a plurality of" represents at least 2.

[0041] In the description of the embodiments of the utility model, still need explaining, unless another explicit provision and limitation, if appearing term '' set '', '' install '', '' link '', '' connect '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two elements inside the intercommunication. For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning of the utility model.

[0042] Embodiment:

[0043] A kind of pipe bag type deep-cone thickening device of pressure treatment washes mineral sewage, including upper and lower arrangement cloth bag maintenance steel structure 1, deep-cone thickening structure 2, cloth bag maintenance steel structure 1 and the connecting place of deep-cone thickening structure 2 is provided with grid 3, deep-cone thickening structure 2 outside is provided with lower support frame steel structure 4;Cloth bag maintenance steel structure 1 inside is provided with double anti-infiltration structure 5, deep-cone thickening structure 2 outside is provided with feeding structure 6, deep-cone thickening structure 2 inner bottom is provided with mud layer rake stirring structure 7;

[0044] Cloth bag maintenance steel structure 1 includes several according to certain angle circumferentially vertically arranged profile steel column 101, profile steel column 101 is uniformly distributed and sealed from top to bottom with horizontal ring beam 102, so that profile steel column 101 and horizontal ring beam 102 form thickening bin structure, the inner wall of thickening bin structure is provided with wire mesh cage 103, to protect geotextile tube 502 uniform stress in the process of pressure infiltration;Double anti-infiltration structure 5 is additionally installed in the inner side of wire mesh cage 103;Double anti-infiltration structure 5 includes coarse filter screen 501 arranged on the upper portion of grid 3 and geotextile tube 502 arranged in the thickening bin structure;Geotextile tube 502 is arranged at the top surface periphery of the bin wall of thickening bin structure, and forms a sealed whole with the lower deep-cone thickening structure 2;Several circles of pool top cover steel skeleton ring beam 104 are arranged from outside to inside at the opening at the top of thickening bin structure, the pool top cover steel skeleton 105 is connected between the multiple circles of pool top cover steel skeleton ring beam 104, and the pool top steel wire mesh 106 is laid between the pool top cover steel skeleton 105 and the pool top cover steel skeleton ring beam 104;Several pool top guardrails 107 are further arranged on the outermost circle of pool top cover steel skeleton ring beam 104;Pipe bag top lengthening pipe opening 108 is arranged at the top center of cloth bag maintenance steel structure 1, and the bottom of pipe bag top lengthening pipe opening 108 is the installation port of geotextile tube 502.

[0045] The sewage injected into the deep-cone thickening tank is under pressure, coarse particles are blocked by the coarse filter screen 501, and then under the action of gravity, the coarse particles go to the mud layer of the deep-cone thickening structure 2, fine particles enter the geotextile tube bag 502 through the coarse filter screen 501, and then the fine particles seep clean water out of the geotextile tube bag 502, the particles are blocked by the tube bag, and then slide down to the coarse filter screen 501, and then under the action of water flow, the particles go through the coarse filter screen 501 and deposit at the bottom of the deep-cone thickening structure 2, thereby completing two-stage reverse osmosis treatment.

[0046] The deep-cone thickening structure 2 comprises a lower cone 201, a mud and sand collecting port 202 is arranged at one side of the bottom of the lower cone 201, a straight cylinder 203 connected with the thickening tank structure is arranged at the top of the lower cone 201, a grid 3 is arranged at the top of the straight cylinder 203, an external annular overflow tank 204 is arranged outside the top of the straight cylinder 203, and an overflow drainage port 205 is arranged at one side of the external annular overflow tank 204; a mud layer scraper and stirring structure 7 is arranged at the inner bottom of the lower cone 201; and a lower support frame steel structure 4 comprises a plurality of cone bucket support frames 401 arranged outside the lower cone 201, and the cone bucket support frames 401 are arranged in a polygonal shape to support the whole system.

[0047] The lower cone 201 and the straight cylinder 203 are assembled and welded by using high-strength wear-resistant steel, the bottom of the lower cone 201 is horizontally sealed by a steel plate, the sealing plate is provided with a center hole and a periphery bolt hole for installing a reverse cone vane driving device of the mud layer scraper and stirring structure 7, the bottom side of the lower cone 201 is provided with an opening for installing the mud and sand collecting port 202, the overflow tank is welded by using a metal plate and is arranged outside the wall of the straight cylinder 203 and serves as a sewage main pipe suspension load-bearing structure, the overflow tank is provided with the overflow drainage port 205, so that the clean water seeped out of the upper geotextile tube bag 502 can be conveniently collected and discharged for use, and the grid 3 at the top of the tank is also made of metal and is firmly welded with the metal structure of the tank wall, and an inspection hole can be arranged, and the inspection hole cover plate grid needs to be reliably bolted to prevent falling off during operation.

[0048] The feeding structure 6 comprises a feeding system, the feeding system comprises a horizontal annular sewage inlet main pipe 601 arranged outside the straight cylinder 203 of the deep-cone thickening structure 2 and located at the lower part of the annular overflow tank, a plurality of water inlet branch pipes 602 are arranged in the lower cone 201 at a certain angle from the annular sewage inlet main pipe 601, so that the liquid entering the lower cone from the water inlet branch pipes 602 forms a cyclone, the water inlet branch pipes 602 are all provided with regulating valves 603, and the annular sewage inlet main pipe 601 is further connected with a water inlet structure 8. The water inlet structure 8 comprises a slag and stone sedimentator 801 with a closed port at the lower part and a hemispherical filter screen 802 at the upper part, and a sewage inlet pipe 803 is horizontally arranged at one side of the hemispherical filter screen 802; the water inlet structure 8 is used to block large particle block materials in the pumped sewage and collect the slag and stones in the slag and stone sedimentator 801, when the slag and stones collected in the slag and stone sedimentator 801 reach a certain amount, the end cover is opened, and the slag and stones are unloaded.

[0049] The mud layer scraper stirring structure 7 comprises a driving motor 701 arranged at the bottom of the lower cone 201, a speed change device 702 in transmission connection with the driving motor 701, a transmission shaft in transmission connection with the speed change device 702 and extending into the inside of the lower cone 201, an inverted-cone type shaftless spiral blade 703 connected on the transmission shaft, and a transmission shaft waterproof sealing device arranged at the connecting position of the transmission shaft and the lower cone 201. When the shaftless spiral blade works, it is forward for mud stirring and reverse for downward scraping.

[0050] In operation, the working principle of the utility model is that a filter layer, i.e. a grid net and a coarse filter net, is horizontally arranged in the middle of the deep-cone thickener, the feeding structure of the thickener is arranged as a middle horizontal ring-shaped uniform feeding, the slurry flow in the silo is pushed to rotate by the pressure of the feeding pipeline, the fine particles in the sewage rise and pass through the coarse filter net into the geotextile tube bag, the clear water seeps through the geotextile tube bag and is collected by the overflow groove for reuse, the coarse particles are downwardly settled to the side wall of the lower cone under the action of the rotation in the silo and are continuously pushed to the bottom of the lower cone by the inverted-cone type shaftless spiral blade arranged at the bottom of the lower cone, the mud layer at the bottom of the lower cone bears the water pressure in the silo and is continuously compacted, and when the concentration reaches a certain value, the sand is discharged from the sand collecting outlet. The device utilizes the principle that the geotextile tube bag can be pressure-seeped and effectively block the fine solid particles, and significantly improves the underflow concentration and the operation efficiency of the equipment.

[0051] The above describes the utility model and its implementation mode, which is not limited, and the shown in the drawings is only one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if the ordinary skilled in the art is inspired, without departing from the creative purpose of the utility model, without creative design, the similar structure mode and the embodiment of the technical scheme, which belongs to the protection scope of the utility model.

Claims

1. A tube-bag type deep cone thickener for pressurized treatment of ore washing wastewater, characterized in that, It includes a bag-supported steel structure and a deep cone thickening structure arranged at the top and bottom. A grid mesh is provided at the connection between the bag-supported steel structure and the deep cone thickening structure. A lower support frame steel structure is provided outside the deep cone thickening structure. A double-layer reverse osmosis filter structure is provided inside the bag-supported steel structure. A feeding structure is provided outside the deep cone thickening structure. A mud layer scraper and mixing structure is provided at the bottom inside the deep cone thickening structure. The bag filter steel structure includes several steel columns arranged vertically in the circumferential direction at a certain angle. Horizontal ring beams are evenly distributed and sealed on the steel columns from top to bottom, so that the steel columns and horizontal ring beams form a thickening chamber structure. The inner wall of the thickening chamber structure is provided with a wire cage, and a double-layer reverse osmosis filter structure is added to the inner side of the wire cage. The double-layer reverse osmosis filter structure includes a coarse filter screen set on the upper part of the grid and geotextile tubes set in the thickening chamber structure; the geotextile tubes are set around the top surface of the thickening chamber structure and form a sealed whole with the lower deep cone thickening structure; The deep cone thickening structure includes a lower cone, a mud and sand collection port on one side of the bottom of the lower cone, a straight silo connected to the thickening chamber structure on the top of the lower cone, a grid mesh on the top of the straight silo, an external annular overflow trough on the outside of the top of the straight silo, and an overflow drain outlet on one side of the external annular overflow trough; the mud layer scraper and agitator structure is located at the bottom of the lower cone. The feeding structure includes a feeding system comprising a horizontally arranged annular inlet wastewater main pipe. The annular inlet wastewater main pipe is located outside the straight silo in the deep cone thickening structure and below the annular overflow trough. Several inlet branch pipes are arranged at a certain angle in the lower cone of the annular inlet wastewater main pipe, so that the liquid entering the lower cone from each inlet branch pipe forms a swirling flow. Each inlet branch pipe is equipped with a regulating valve. The annular inlet wastewater main pipe is also connected to a water injection port structure.

2. The tube-bag type deep cone thickener for pressurized treatment of ore washing wastewater according to claim 1, characterized in that, The top opening of the dense storage structure is provided with several rings of steel frame beams for the pool top cover from the outside to the inside. The multiple rings of steel frame beams for the pool top cover are connected by the pool top cover steel frame. A pool top wire mesh is laid between the pool top cover steel frame and the pool top cover steel frame ring beams.

3. The tube-bag type deep cone thickener for pressurized treatment of ore washing wastewater according to claim 1, characterized in that, Several pool top railings are also installed on the outermost steel frame ring beam of the pool top cover.

4. The tube-bag type deep cone thickener for pressurized treatment of ore washing wastewater according to claim 1, characterized in that, The top center of the steel structure for the geotextile bag maintenance is provided with a top extension pipe opening, and the bottom of the top extension pipe opening is the installation port for the geotextile bag.

5. A tube-bag type deep cone thickener for pressurized treatment of ore washing wastewater according to claim 1, characterized in that, The lower support frame steel structure includes several cone-shaped support frames disposed outside the lower cone. The cone-shaped support frames are polygonal in shape and are used to support the entire system.

6. The tube-bag type deep cone thickener for pressurized treatment of ore washing wastewater according to claim 1, characterized in that, The mud layer scraper mixing structure includes a drive motor located at the bottom of the lower cone, a speed change device connected to the drive motor, and a drive shaft connected to the speed change device and extending into the lower cone. The drive shaft is connected to an inverted conical shaftless spiral blade.

7. A tubular deep cone thickener for pressurized treatment of ore washing wastewater according to claim 1, characterized in that, The lower part of the water inlet structure is a slag and stone sedimentation device with a closed port, and the upper part is a hemispherical filter screen. A sewage inlet pipe is horizontally installed on one side of the hemispherical filter screen.

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