Wastewater recycling ore washing device for barite powder raw material processing

Abstract

The invention relates to the technical field of ore washing equipment, and discloses a waste water recycling ore washing device for barite powder raw material processing, which comprises a bottom frame, at least two groups of vertical seats are mounted on the bottom frame, a horizontally distributed charging barrel is placed on the two groups of vertical seats, the charging barrel comprises a first screen drum and a second screen drum, and a gear ring is mounted between the first screen drum and the second screen drum. The gear ring is connected with a driving part installed on the bottom frame, the outer side of the second screen drum is sleeved with a second housing, a water outlet pipe is arranged in the second housing, and the water outlet pipe is communicated with an external filtering part. According to the invention, graded collection and cyclic utilization of flushing wastewater are realized, and the consumption of clear water is reduced. The concentration of fine powder in the wastewater is effectively reduced through staged screening treatment, and the treatment load of a subsequent filtering system is relieved. The establishment of a closed-loop water circulation system improves the utilization rate of water resources, and reduces the environmental pressure caused by wastewater discharge at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of ore washing equipment, in particular to an ore washing device for processing barite powder raw materials by recycling wastewater. Background Art

[0002] Barite powder (BaSO4) is a key industrial raw material widely used in oil drilling, chemicals, coatings, and pharmaceuticals. During processing, the ore undergoes crushing and washing to remove impurities (such as clay and oxides). Traditional washing processes rely on large amounts of clean water, resulting in high water consumption and the generation of wastewater containing suspended solids and heavy metals. Direct discharge of this wastewater can cause severe environmental pollution.

[0003] The existing ore washing device has only a single flushing step, which directly flushes the transported barite powder raw material to complete the ore washing work. Since a large amount of powder is attached to the outer surface of the barite powder raw material, floating dust enters the water during the direct flushing process, causing the wastewater after flushing to contain a large amount of fine powder, which increases the difficulty of subsequent wastewater filtration treatment. At the same time, a large amount of water is also required during the flushing process of the barite powder raw material to complete the removal of powder on the surface of the barite powder raw material. Summary of the Invention

[0004] The object of the present invention is to provide a ore washing device for processing barite powder raw materials with wastewater recycling, so as to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a ore washing device for processing barite powder raw materials with wastewater recycling, comprising a base frame, at least two groups of stands installed on the base frame, horizontally distributed barrels placed on the two groups of stands, the barrels comprising a first sieve drum and a second sieve drum, a gear ring installed between the first sieve drum and the second sieve drum, the gear ring being connected to a driving part installed on the base frame, a second cover shell being provided on the outer side of the second sieve drum, a water outlet pipe being provided in the second cover shell, and the water outlet pipe being connected to an external filter part.

[0006] Furthermore, the first screen drum includes a first conical screen tube, both ends of the first conical screen tube are connected to a disc body and a first flange respectively, and an annular body is provided on the outer surface of the first flange; A first spiral blade is provided on the inner wall of the channel formed by the first conical screen tube and the ring body.

[0007] Furthermore, a first cover shell is provided on the outer side of the first screen drum, a first fixing frame is installed on the bottom of the first cover shell, and the first fixing frame is fixedly installed on the base frame; The first cover shell is located outside the first conical screen tube. An air inlet pipe and a sewage outlet pipe are provided on the first cover shell. The sewage outlet pipe is located at the bottom of the first cover shell.

[0008] Furthermore, the second screen drum includes a second conical screen tube, and both ends of the second conical screen tube are provided with a second flange; A second spiral blade is provided on the inner wall of the second conical screen tube.

[0009] Furthermore, a gear ring is installed between the second spiral blade connected to the large end of the second conical screen tube and the disc body.

[0010] Furthermore, the first conical screen tube and the second conical screen tube form a channel, and the material moves upward along the conical surfaces of the first conical screen tube and the second conical screen tube.

[0011] Furthermore, a drain pipe is provided at the bottom of the second housing, and the drain pipe is connected to the filter portion; A second fixing bracket is installed at the bottom of the second cover shell, and the second fixing bracket is fixedly installed on the base frame.

[0012] Furthermore, the filter unit includes a water tank, a filter screen is installed inside the water tank, and the filter screen divides the inside of the water tank into an upper cavity and a lower cavity; The water tank is connected with a water outlet, a water inlet, an overflow port and a discharge port. The water inlet and the discharge port are connected with the lower cavity, and the water outlet and the overflow port are connected with the upper cavity.

[0013] Furthermore, the positions of the discharge port, water inlet, water outlet and overflow port are successively higher.

[0014] Furthermore, the water outlet is connected to the water outlet pipe through a water pipe; the water inlet is connected to the drain pipe through a water pipe.

[0015] The present invention has the following beneficial effects: (1) The present invention achieves the hierarchical collection and recycling of flushing wastewater, reducing the consumption of clean water. The staged screening treatment effectively reduces the concentration of fine powder in the wastewater, alleviating the processing load of the subsequent filtration system. The establishment of a closed-loop water circulation system improves the utilization rate of water resources and reduces the environmental pressure caused by wastewater discharge.

[0016] (2) The present invention achieves graded treatment, effectively reducing the amount of fine powder entering the flushing wastewater. The fine powder is pre-screened and collected in the second sieve drum stage, reducing the processing load of the subsequent filtration system. The solid impurity content in the flushing wastewater is reduced, which increases the wastewater recycling rate and reduces the consumption of clean water resources.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the barrel structure of the present invention Figure 1 ; Figure 3 Schematic diagram of the barrel structure of the present invention Figure 2 ; Figure 4 This is a schematic diagram of the side structure of the barrel of the present invention; Figure 5 For the present invention Figure 4 AA cross-sectional diagram; Figure 6 This is a schematic diagram of the barrel installation of the present invention; Figure 7 It is a schematic diagram of the barrel of the present invention; Figure 8 This is a schematic diagram of the barrel of the present invention; Figure 9 Schematic diagram of an embodiment of the present invention; In the accompanying drawings, the components represented by the reference numerals are as follows: In the figure: 1. base frame; 2. stand; 3. first screen drum; 301. first conical screen tube; 302. disc; 303. first flange; 304. ring body; 305. first spiral blade; 4. second screen drum; 401. second conical screen tube; 402. second flange; 403. second spiral blade; 5. gear ring; 6. drive unit; 7. first cover shell; 701. air inlet pipe; 702. sewage outlet pipe; 8. second cover shell; 801. drainage pipe; 9. water outlet pipe; 10. filter unit; 1001. water tank; 1002. filter screen; 1003. water outlet; 1004. water inlet; 1005. overflow port; 1006. discharge port; 11. water pipe. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Prior art processes require large quantities of clean water for rinsing barite powder raw materials. Traditional ore washing processes employ a single flushing method, resulting in wastewater containing a large amount of fine powder, making filtration and treatment more difficult. Existing systems directly flush the conveyed material, allowing dust to enter the wastewater system with the water flow, resulting in water waste and environmental pollution. For example, in the cleaning of powder adhering to the surface of barite raw materials, a single-stage flushing structure struggles to effectively separate particles of varying sizes, resulting in excessive wastewater treatment load.

[0022] To address these issues, researchers discovered the need for a phased treatment mechanism that reduces suspended solids in wastewater through physical screening. Experimental validation demonstrated that a multi-stage sieve drum structure allows for gradient processing of the material, initially separating large impurities before fine rinsing. Achieving synergistic effects between screening and rinsing became a key breakthrough. The introduction of a rotating sieve drum and a closed wastewater collection system not only improves cleaning efficiency but also centralizes wastewater treatment for recycling.

[0023] Therefore, if Figures 1-9 As shown, the present application proposes a wastewater recycling ore washing device for processing barite powder raw materials, which includes a wastewater recycling ore washing device with a base frame 1. Two sets of stands 2 are installed on the base frame 1 for placing horizontally distributed barrels. The barrels are composed of a first screen barrel 3 and a second screen barrel 4. A gear ring 5 is provided between the two to connect the drive part 6. A second cover shell 8 with a water outlet pipe 9 is provided on the outside of the second screen barrel 4, and the water outlet pipe 9 is connected to the external filter part 10.

[0024] The base frame 1 is the supporting structure for the main body of the supporting device, which can be constructed using a welded steel frame and is used to maintain the stability of the equipment. The stand 2 is a supporting component fixed to the base frame 1, which can be constructed using a cast iron part with grooves. It is used to position and support the sieve drum assembly. The first sieve drum 3 and the second sieve drum 4 are cylindrical structures with screening functions, which can be constructed using conical metal screens and are used to process materials of different particle sizes in stages. The gear ring 5 is the transmission component connecting the two sieve drums, which can be constructed using a ring gear structure and is used to transmit the driving force to rotate the sieve drums. The drive unit 6 is the power output device, which can be constructed using a motor and a reducer to drive the sieve drums to generate rotational motion. The second cover 8 is the enclosed shell that surrounds the sieve drum, which can be constructed using a welded steel plate structure and is used to collect flushing wastewater. The outlet pipe 9 is fixedly connected to the pipe of the filter unit 10, which can be connected using a flange at the end of the steel pipe, and is used to transport wastewater to the filtration system. The filter unit 10 is a water treatment unit, which can be constructed using a multi-stage filter structure to separate solid particles from the wastewater.

[0025] Specifically, after the material enters the first screen drum 3, it rubs against the screen due to the rotation, and the powder attached to the surface of the raw material is initially separated. The second screen drum 4 prolongs the material residence time through the conical structure design, allowing fine particles to be separated under the action of centrifugal force. After the flushing wastewater is collected by the second cover 8, it enters the filter section 10 through the outlet pipe 9 for solid-liquid separation. The purified water can be reused for flushing operations. The rotational motion of the screen drum is transmitted by the drive section 6 through the gear ring 5, forming a synergistic effect of continuous screening and flushing. The filter section 10 removes suspended matter in the wastewater through physical interception, forming a closed-loop water circulation system.

[0026] The driving unit 6 includes a motor and a gear box, and the motor is connected to the gear ring 5 through the gear box.

[0027] Compared to existing technologies, this solution achieves preliminary dust removal upon material entry into the first sieve drum 3, while the second sieve drum 4 rinses away most of the fines from the material surface, significantly reducing the fines content in the wastewater. The combined design of rotary screening and closed wastewater collection avoids the water waste associated with traditional open-type rinsing.

[0028] Through the above technical solution, this application achieves the hierarchical collection and recycling of flushing wastewater, reducing fresh water consumption. The staged screening process effectively reduces the concentration of fine powder in the wastewater, alleviating the processing load of the subsequent filtration system. The establishment of a closed-loop water circulation system improves water resource utilization while reducing the environmental pressure caused by wastewater discharge.

[0029] The present application further proposes that the first sieve drum 3 includes a first conical sieve tube 301, the two ends of the first conical sieve tube 301 are respectively connected to a disc body 302 and a first flange 303, a ring body 304 is provided on the outer surface of the first flange 303, and a first spiral blade 305 is provided on the inner wall of the channel formed by the first conical sieve tube 301 and the ring body 304.

[0030] Among them, the first conical screen tube 301 refers to a screening structure with a tapered cross-section, which can be specifically implemented by a metal screen cylinder with a cone angle of 5°-15°, and its tapered channel is used to guide the material to produce stratified movement. Among them, the disc body 302 refers to a disc structure connected to the small end of the first conical screen tube 301, which can be specifically implemented by processing a steel plate with a thickness of 10-20 mm, and is used to close the small end of the screen tube and form a material guide interface. Among them, the first flange 303 refers to an annular connector connected to the large end of the first conical screen tube 301, which can be specifically implemented by bolt connection, and is used to form a sealed connection with the adjacent structure. Among them, the ring body 304 refers to an annular protrusion arranged on the outside of the first flange 303, which can be specifically implemented by welding or integral molding, and forms an annular gap channel with the outer wall of the first conical screen tube 301. The first spiral blade 305 refers to a flow guide structure extending spirally along the inner wall of the first conical screen tube 301 , and can be specifically realized by welding metal strips with a pitch of 200-400 mm, and is used to drive the material to rotate and generate centrifugal force.

[0031] The present application further proposes to sleeve a first cover shell 7 on the outside of the first screen cylinder 3, install a first fixing frame at the bottom of the first cover shell 7 and fix it to the base frame 1, and the first cover shell 7 wraps the first conical screen tube 301, on which an air inlet pipe 701 and a sewage outlet pipe 702 at the bottom are arranged.

[0032] Among them, the first cover shell 7 refers to a closed shell surrounding the sieve drum, which can be specifically an annular cavity formed by welding steel plates, which wraps the sieve drum to form a closed flushing space to limit dust overflow. The first fixed frame refers to the supporting structure connecting the cover shell and the base frame 1, which can be specifically a triangular bracket welded with channel steel, and is rigidly connected to the base frame 1 by bolts to maintain the stability of the cover structure. The air inlet pipe 701 refers to the gas inlet channel arranged at the top of the cover shell, which can be specifically a steel pipe connected by a flange, used to introduce airflow into the enclosed space to form an air curtain barrier. The sewage outlet pipe 702 refers to the discharge channel located at the bottom of the cover shell, which can be specifically a conical pipe with a stop valve, and uses gravity to achieve directional collection of dust-laden air.

[0033] The present application further proposes that the second sieve drum 4 includes a second conical sieve tube 401, both ends of the second conical sieve tube 401 are provided with a second flange 402, the inner wall of the second conical sieve tube 401 is provided with a second spiral blade 403, the outlet pipe 9 is located above the second conical sieve tube 401, and the water sprayed through the outlet pipe 9 is sprayed on the outer surface of the second conical sieve tube 401. The water flow rushes into the second conical sieve tube 401, and the surface of the second conical sieve tube 401 is cleaned. While completing the cleaning of the second conical sieve tube 401, the incoming water flow cleans the raw material.

[0034] Among them, the second conical screen tube 401 refers to a screening component with a conical structure, which can be specifically implemented by a conical metal tube with a diameter at one end larger than the other end. The conical structure forms a gradient distribution by changing the cross-sectional area of ​​the material flow, thereby extending the material residence time. The second spiral blade 403 refers to a spiral guide structure arranged along the inner wall of the screen tube, which can be fixed to the inner wall of the screen tube by welding or integral molding. The axial propulsion speed of the material is controlled by the spiral angle, thereby enhancing the friction between the material and the screen surface. The second flange 402 refers to an annular connecting component arranged at both ends of the screen tube, which can be specifically implemented by using bolts and sealing gaskets to achieve a rigid connection with adjacent components to ensure the structural stability of the screen drum during operation.

[0035] Specifically, the taper design of the second conical screen tube 401 causes the material to form a spiral upward motion trajectory due to the change in cross-sectional area during the screening process. The second spiral blade 403 applies continuous thrust to the material during rotation, forcing the material to be squeezed and rubbed against the inner wall of the screen tube, and the impurities attached to the surface of the barite powder are peeled off under mechanical action. The second flange 402 maintains the water flow path inside the screen drum through a sealed connection to prevent direct mixing of wastewater and untreated materials. In this process, the fine powder is screened out at the front end of the screen tube and enters the external collection system through the sieve hole, while the cleaned barite powder continues to move along the spiral path toward the discharge end.

[0036] The present application further proposes that a gear ring 5 is installed between the second spiral blade 403 connected to the large end of the second conical screen tube 401 and the disc body 302 .

[0037] Wherein, the gear ring 5 refers to an annular transmission component with meshing teeth, which can be specifically realized by a steel gear ring meshing with the gear of the driving part 6, and is used to transmit rotational power and realize the synchronous operation of the two screen drums. Wherein, the large end of the second conical screen tube 401 refers to the end of the conical screen tube with a larger diameter, which can be specifically realized by a stainless steel screen structure with a taper angle of 15°-30°, and is used to form a gradually expanding material propulsion channel. Wherein, the second spiral blade 403 refers to a spiral guide plate arranged along the inner wall of the screen tube, which can be specifically realized by a metal plate structure fixed by welding or bolts, and is used to push the material to move axially and promote the screening process. Wherein, the disc body 302 refers to an annular support component connected to the end of the first conical screen tube 301, which can be specifically realized by a cast iron flange structure with a central through hole, and is used to carry the gear ring 5 and form a sealed connection interface.

[0038] Through the above technical solution, this application achieves graded treatment, effectively reducing the amount of fine powder entering the flushing wastewater. The fine powder is pre-screened and collected in the second sieve drum stage 4, reducing the processing load of the subsequent filtration system. The reduced content of solid impurities in the flushing wastewater increases the wastewater recycling rate and reduces the consumption of clean water resources.

[0039] The present application further proposes that the first conical screen tube 301 and the second conical screen tube 401 form a channel, and the material moves upward along the conical surfaces of the first conical screen tube 301 and the second conical screen tube 401 .

[0040] The first conical screen tube 301 refers to a screening component with a conical geometric structure, which can be implemented by a metal mesh tube structure with a taper of 15°-30°. The conical design can guide the material to form a spiral motion trajectory. The second conical screen tube 401 refers to a reverse conical component arranged coaxially with the first conical screen tube 301, which can be implemented by a sieve plate structure with a taper of 10°-25°. Its taper direction is opposite to that of the first conical screen tube 301 to form a tapered channel. The upward movement of the conical surface refers to the movement mode of the material in the composite channel formed by the double conical screen tubes due to the synergistic action of centrifugal force and gravity. It can be achieved by adjusting the screen tube rotation speed and the taper angle. This movement mode produces a stratification effect on the material during the screening process.

[0041] Specifically, after the material enters the first conical screen tube 301, the rotating first conical screen tube 301 pushes the material toward the second conical screen tube 401 through the spiral blades provided inside. The material entering the rotating second conical screen tube 401 moves toward the outlet side under the push of the spiral blades inside. The materials move upward along the inner walls of both the first conical screen tube 301 and the second conical screen tube 401 .

[0042] The present application further proposes that a drain pipe 801 is provided at the bottom of the second cover shell 8 , and the drain pipe 801 is connected to the filter unit 10 . A second fixing frame is installed at the bottom of the second cover shell 8 , and the second fixing frame is fixedly installed on the base frame 1 .

[0043] The present application further proposes that the filter part 10 includes a water tank 1001, and a filter screen 1002 is installed inside the water tank 1001. The filter screen 1002 divides the interior of the water tank 1001 into an upper cavity and a lower cavity. The water tank 1001 is connected with a water outlet 1003, a water inlet 1004, an overflow port 1005 and a discharge port 1006. The water inlet 1004 and the discharge port 1006 are connected to the lower cavity, and the water outlet 1003 and the overflow port 1005 are connected to the upper cavity.

[0044] Filter 1002 is a physical barrier used to separate solid particles from wastewater. It can be woven from stainless steel or polyester, achieving solid-liquid separation by intercepting suspended matter. The upper chamber is the clean water storage space formed above filter 1002. Clean water filtered by filter 1002 accumulates here, allowing it to be reused in the ore washing process through outlet 1003. The lower chamber is the settling area formed below filter 1002. It is used to collect impurity particles trapped by filter 1002 and periodically discharge them through outlet 1006. The water inlet 1004 is the entrance for wastewater entering tank 1001. It can be located on the sidewall of the lower chamber, allowing the wastewater to first contact filter 1002 for preliminary filtration. The overflow port 1005 is a drainage channel for when the water level exceeds a preset height. It can be located at the top of the upper chamber to prevent overloading of tank 1001 and causing clean water to overflow.

[0045] Specifically, after the wastewater is injected into the lower cavity through the water inlet 1004, it passes through the filter 1002 and enters the upper cavity. The filter 1002 intercepts the suspended matter at the bottom of the lower cavity. The filtered clean water flows back from the upper cavity to the ore washing device through the water outlet 1003, realizing the circulation of water resources. When the water level in the upper cavity exceeds the height of the overflow port 1005, the excess clean water is discharged through the overflow port 1005 to avoid damage to the filter 1002 due to excessive pressure. Impurities deposited in the lower cavity are regularly cleaned through the discharge port 1006 to prevent the filter 1002 from being blocked. The water inlet 1004, the discharge port 1006, the water outlet 1003 and the overflow port 1005 are arranged according to a height gradient to form a water level difference control to ensure stable solid-liquid stratification.

[0046] Through the above technical solution, this application solves the problems of incomplete filtration of traditional mineral washing wastewater and easy clogging of filter 1002, achieving efficient interception of suspended solids and rapid separation of clean water. The wastewater recycling rate is improved, reducing fresh water consumption. The independent sedimentation zone design in the lower chamber reduces the frequency of cleaning filter 1002 and facilitates the discharge of impurities. The overflow port 1005 and water level gradient control effectively prevent equipment overload and ensure stable system operation.

[0047] The present application further proposes that the positions of the discharge port 1006 , the water inlet 1004 , the water outlet 1003 and the overflow port 1005 are sequentially increased.

[0048] Among them, the discharge port 1006 refers to the opening provided at the bottom of the water tank 1001, which can be specifically implemented by a pipe structure with a valve, and is used to discharge sludge and impurities deposited in the lower cavity. The water inlet 1004 refers to the opening located above the discharge port 1006, which can be specifically implemented by a horizontally extending tubular structure, so that the wastewater avoids directly impacting the filter 1002 when entering the lower cavity. The water outlet 1003 refers to the opening provided in the upper cavity, which can be specifically implemented by a pipe structure with a water pump, and is used to extract clean water after being filtered by the filter 1002. The overflow port 1005 refers to the opening provided at the top of the water tank 1001, which can be specifically implemented by a vertically extending short pipe structure, and is used to discharge excess water when the water level exceeds the set height.

[0049] The present application further proposes that the water outlet 1003 is connected to the water outlet pipe 9 through the water pipe 11, and the water inlet 1004 is connected to the drain pipe 801 through the water pipe 11.

[0050] Among them, the water outlet 1003 refers to the opening in the filter section 10 for discharging filtered clean water. Specifically, it can be implemented by a pipe interface with a flange connection. It is used to re-transfer the filtered clean water to the water outlet pipe 9 of the ore washing device. The water inlet 1004 refers to the opening in the filter section 10 for receiving wastewater containing suspended matter. Specifically, it can be implemented by a quick connector with a sealing ring. It is used to receive wastewater from the ore washing device drain pipe 801. The water pipe 11 is the pipeline connecting the filter section 10 and the ore washing device. Specifically, it can be implemented by a corrosion-resistant PVC or metal pipe to form a closed water circulation loop.

[0051] Through the above technical solution, this application effectively reduces the difficulty of treating suspended solids in wastewater, reduces the amount of clean water used in the ore washing process, and at the same time avoids wastewater discharge through a closed circulation system, thereby improving water resource utilization and the sustainability of ore washing operations.

[0052] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A washing device for processing barite powder raw materials with wastewater recycling, comprising a base frame (1), characterized in that: At least two groups of stands (2) are mounted on the base frame (1), and horizontally distributed barrels are placed on the two groups of stands (2); The material cylinder comprises a first sieve cylinder (3) and a second sieve cylinder (4), a gear ring (5) is installed between the first sieve cylinder (3) and the second sieve cylinder (4), and the gear ring (5) is connected to a driving part (6) installed on the base frame (1); A second cover shell (8) is provided on the outer side of the second sieve drum (4), and a water outlet pipe (9) is provided in the second cover shell (8). The water outlet pipe (9) is connected to the external filter part (10).

2. A barite powder raw material processing ore washing device for wastewater recycling according to claim 1, characterized in that: The first sieve drum (3) comprises a first conical sieve tube (301), the two ends of the first conical sieve tube (301) are respectively connected to a disc body (302) and a first flange (303), and a ring body (304) is provided on the outer surface of the first flange (303); A first spiral blade (305) is provided on the inner wall of the channel formed by the first conical screen tube (301) and the ring body (304).

3. A barite powder raw material processing ore washing device for wastewater recycling according to claim 2, characterized in that: A first cover shell (7) is sleeved on the outer side of the first sieve drum (3), a first fixing frame is installed on the bottom of the first cover shell (7), and the first fixing frame is fixedly mounted on the base frame (1); The first cover shell (7) is located outside the first conical screen tube (301), and an air inlet pipe (701) and a sewage outlet pipe (702) are provided on the first cover shell (7), and the sewage outlet pipe (702) is located at the bottom of the first cover shell (7).

4. A barite powder raw material processing ore washing device for wastewater recycling according to claim 2, characterized in that: The second sieve drum (4) comprises a second conical sieve tube (401), and both ends of the second conical sieve tube (401) are provided with second flanges (402); A second spiral blade (403) is provided on the inner wall of the second conical screen tube (401).

5. A barite powder raw material processing ore washing device for wastewater recycling according to claim 4, characterized in that: A gear ring (5) is installed between the second spiral blade (403) connected to the large end of the second conical screen tube (401) and the disc body (302).

6. A barite powder raw material processing ore washing device for wastewater recycling according to claim 5, characterized in that: The first conical screen tube (301) and the second conical screen tube (401) form a channel, and the material moves upward along the conical surface of the first conical screen tube (301) and the conical surface of the second conical screen tube (401).

7. A barite powder raw material processing ore washing device for wastewater recycling according to claim 4, characterized in that: A drainage pipe (801) is provided at the bottom of the second housing (8), and the drainage pipe (801) is in communication with the filter portion (10); A second fixing frame is installed at the bottom of the second cover shell (8), and the second fixing frame is fixedly installed on the base frame (1).

8. A barite powder raw material processing ore washing device for wastewater recycling according to claim 1, characterized in that: The filter unit (10) comprises a water tank (1001), a filter screen (1002) is installed inside the water tank (1001), and the filter screen (1002) divides the interior of the water tank (1001) into an upper cavity and a lower cavity; The water tank (1001) is connected with a water outlet (1003), a water inlet (1004), an overflow port (1005) and a discharge port (1006); the water inlet (1004) and the discharge port (1006) are connected with the lower cavity, and the water outlet (1003) and the overflow port (1005) are connected with the upper cavity.

9. A barite powder raw material processing ore washing device for wastewater recycling according to claim 8, characterized in that: The positions of the discharge port (1006), the water inlet (1004), the water outlet (1003) and the overflow port (1005) are successively higher.

10. The ore washing device for processing barite powder raw materials by recycling wastewater according to claim 8, characterized in that: The water outlet (1003) is connected to the water outlet pipe (9) through the water pipe (11); the water inlet (1004) is connected to the drain pipe (801) through the water pipe (11).

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