Processing device of barite powder

Abstract

The invention provides a barite powder processing device which comprises a shell, the top of the shell is provided with a feeding guide groove and a returning guide cylinder, and the side wall of the shell is provided with a coarse material guide cylinder; an inlet of the returned material conveyor is connected with the coarse material guide cylinder on the side wall of the shell, and an outlet of the returned material conveyor is connected with the returned material guide cylinder at the top of the shell; a grinding mechanism is also arranged in the shell; the material returning sieve plate is located below the grinding mechanism, and the lower end of the material returning sieve plate communicates with a coarse material guide cylinder on the side wall of the shell; and the discharging mechanism is positioned below the material returning sieve plate. By the adoption of the device, materials ground by the grinding mechanism are screened through the material returning screen plate, the screened coarse materials pass through the coarse material guide cylinder and then are conveyed to the material returning guide cylinder through the material returning conveyor, coarse material returning grinding is achieved, the grinding effect is improved, and the service life of a motor is prolonged; the material continuity of the grinding mechanism is improved, and the space utilization rate is high; dust escape is avoided, and the environmental protection property is improved.

Description

Technical Field

[0001] The invention relates to the technical field of barite processing devices, and in particular to a barite powder processing device. Background Art

[0002] The main component of barite is barium sulfate, and its crystal belongs to the sulfate mineral of orthorhombic system. Chemical grade barite powder is a mineral powder obtained by further processing crude barite ore through grinding, flotation and other methods. Its main component is barium sulfate with a purity of more than 97%.

[0003] Barite crushing requires a grinding mill. At present, Raymond mills are mainly used in the mining crushing industry. The Raymond mill is mainly composed of a grinding barrel and a grinding assembly located in the grinding barrel. The grinding assembly rotates around the vertical axis. The grinding roller on the grinding assembly is tightly pressed against the inner wall of the grinding barrel under the action of centrifugal force, thereby grinding the block of barite into powder. At the same time, the fan blows air into the main casing, blowing up the powder, which is sorted by the analyzer placed above the grinding chamber. The powder with the required fineness enters the cyclone collector, is collected and discharged through the powder outlet, and is the finished product.

[0004] Since there is always a certain gap between different grinding rollers, some barite blocks will fall to the bottom of the grinding barrel. A scraper is provided at the bottom of the grinding assembly to scoop up the barite blocks that fall to the bottom of the grinding barrel so that the grinding rollers can be re-grinded. However, due to the repeated friction between the scraper and the bottom of the grinding barrel and the barite, the scraper and its supporting parts are susceptible to severe impact and wear, which greatly consumes the kinetic energy of the grinding assembly, not only affecting the grinding effect, but also greatly increasing the load on the motor and reducing the life of the motor. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a barite powder processing device.

[0006] The present invention is achieved through the following technical solutions.

[0007] The barite powder processing device provided by the present invention comprises:

[0008] A housing, wherein a feed guide groove and a return guide cylinder are provided on the top of the housing, and a coarse material guide cylinder is provided on the side wall of the housing;

[0009] A return material conveyor, wherein the inlet of the return material conveyor is connected to the coarse material guide cylinder on the side wall of the shell, and the outlet of the return material conveyor is connected to the return material guide cylinder on the top of the shell;

[0010] The housing is also provided with:

[0011] A grinding mechanism, used for grinding the blocky barite material from the feed chute;

[0012] A return material screen plate, located below the grinding mechanism, is used to screen the material ground by the grinding mechanism into coarse material and fine material, and the lower end of the return material screen plate is connected to the coarse material guide cylinder on the side wall of the shell;

[0013] The discharging mechanism is located below the return material screen plate, and the fine material screened by the return material screen plate falls into the discharging mechanism. The discharging mechanism is used to guide the fine material out of the shell.

[0014] Furthermore, the return material screen plate is arc-shaped and the concave arc surface is arranged upward, and the concave surface of the return material screen plate is provided with a plurality of guide strips, which extend from the upper end of the return material screen plate to the lower end of the return material screen plate.

[0015] The coarse materials are concentrated by the arc-shaped return screen plate, which reduces the size of the outlet required for the coarse materials to be discharged, is easy to manufacture, and has low sealing difficulty; the coarse materials are blocked and guided to fall by the guide strips, which prevents the sharp corners of the coarse materials from getting stuck in the screen holes after falling into the screen holes, causing blockage, thereby improving the screening efficiency and return efficiency.

[0016] Furthermore, support folds are provided on both sides of the return material screen plate, and support bars are provided on the two opposite inner walls of the shell, and the support folds are mounted on the support bars; support blocks are also provided on the other two opposite inner walls of the shell, and the two ends of the return material screen plate are placed on the support blocks.

[0017] The return material screen plate is supported by support bars and support blocks, which is easy to install and avoids rigid connection, making it easy to transmit the vibration of the grinding mechanism to the return material screen plate, thereby promoting the vibration of the return material screen plate and improving the screening efficiency.

[0018] Furthermore, the support block is provided with an arc groove which matches with the convex arc surface of the return material screen plate, and both ends of the return material screen plate are located in the arc groove.

[0019] Improved the stability of the return screen.

[0020] Furthermore, the coarse material guide cylinder is a conical barrel, the large end of which is semicircular or semi-elliptical corresponding to the shape of the lower end of the return material screen plate, and the small end of which is circular and connected to a connecting pipe, which is connected to the inlet of the return material conveyor.

[0021] The coarse material guide cylinder makes it easy to fit with the lower end of the return material screen plate, and at the same time it is easy to connect the connecting pipe and the return material conveyor to achieve a closed connection; during the return process, the coarse material is transported in a closed manner through the coarse material guide cylinder, the return material conveyor and the return material guide cylinder, which avoids dust escape and improves environmental protection.

[0022] Furthermore, the discharging mechanism includes a discharging chute, a discharging guide cylinder and a discharging conveyor. The discharging chute is arc-shaped and the concave arc surface is arranged upward. The discharging chute is connected to the inner wall of the shell. The lower end of the discharging chute is connected to the discharging guide cylinder. The discharging guide cylinder is arranged on the outer wall of the shell. The discharging guide cylinder is connected to the entrance of the discharging conveyor.

[0023] The fine material is led out to the discharge guide cylinder through the discharge chute, and then transported through the discharge conveyor, which is easy to use and easy to operate.

[0024] Furthermore, the grinding mechanism includes a grinding cylinder, a support beam and a grinding motor. The grinding cylinder is coaxially arranged with the output shaft of the grinding motor, the grinding cylinder is fixed on the upper side of the support beam, the grinding motor is fixed on the lower side of the support beam, and the support beam is fixed on the inner wall of the shell; a grinding bracket is provided in the grinding cylinder, and a plurality of grinding rollers are provided on the grinding bracket, and the grinding rollers are distributed along the inner wall of the grinding cylinder; the grinding bracket is rotatably connected to the support beam, and the output shaft of the grinding motor passes through the support beam and is transmission-connected to the grinding bracket.

[0025] The grinding motor drives the grinding bracket to rotate, and the grinding roller on the grinding bracket is pressed on the inner wall of the grinding cylinder under the action of centrifugal force, so as to grind the block barite into powder; supported by the support beam, the ground material can quickly pass through the bottom of the grinding cylinder, avoiding the block material falling into the bottom of the grinding cylinder from getting stuck and hitting the components, thereby improving the grinding efficiency and extending the service life of the device.

[0026] Furthermore, it also includes a dust removal mechanism, and a dust hood is provided on the side wall of the shell. The dust removal mechanism is connected to the dust hood through a pipeline, and the dust hood is located on one side of the grinding cylinder.

[0027] The dust generated during the crushing of the barite is sucked away by the dust removal mechanism, so that the feed guide groove forms a downward airflow, which avoids the escape of dust, improves the working environment, and is beneficial to environmental protection.

[0028] Furthermore, a conical screen cylinder is provided on the top of the grinding cylinder, the large end of the conical screen cylinder is upward and in contact with the inner wall of the shell, and the small end of the conical screen cylinder is connected to the top of the grinding cylinder.

[0029] This prevents the block materials knocked away by the grinding bracket from flying to the outside of the grinding cylinder, which is convenient for protecting components such as the dust cover and improves the grinding efficiency. At the same time, the conical screen cylinder has a small airflow resistance, ensuring that the feed guide groove forms a downward airflow.

[0030] Furthermore, the dust removal mechanism includes a box body, a filter plate is provided in the middle of the box body, a filter cage is provided on the filter plate, and a mesh cover is provided on the outer wall of the filter cage; a water distribution hood is provided directly above the filter cage, a ring-shaped water distribution pipe is provided on the lower side of the water distribution hood, and a plurality of nozzles are distributed on the inner side of the water distribution pipe, and the nozzles are arranged obliquely downward toward the mesh cover; an exhaust fan is also provided on the top of the box body, and the exhaust fan is used to extract air from the box body to the outside; an air intake pipe is also provided on the box body, one end of the air intake pipe extends into the filter cage from the bottom of the filter cage, and the other end of the air intake pipe is connected to the dust hood.

[0031] Water is sprayed circumferentially on the top of the mesh cover through the water pipe and nozzle. Under the adsorption and diversion of the flexible mesh cover, the water flows continuously downward along the mesh cover to form a continuous breathable water curtain barrier; the exhaust fan forms a negative pressure in the box, and the negative pressure is transmitted to the dust hood through the air intake pipe, so that the air flow with dust flows through the dust hood and the air intake pipe to the filter cage, and passes through the filter cage and the mesh cover. The moisture in the mesh cover can fully absorb the dust, thereby achieving a full dust removal effect. At the same time, under the action of the water flow, the dust attached to the outer wall of the filter cage and the mesh cover is washed down, and concentrated to the bottom of the box through the filter plate, avoiding blockage and having strong continuous working ability.

[0032] The beneficial effects of the present invention are:

[0033] By adopting the present invention, the material ground by the grinding mechanism is screened by the return material screen plate, and the screened coarse material is conveyed to the return material guide cylinder by the return material conveyor after passing through the coarse material guide cylinder, so as to fall into the grinding mechanism again for grinding, thereby realizing the coarse material return grinding, avoiding the process of using a scraper to knock the coarse material away, causing component wear and consuming the kinetic energy of the grinding mechanism, improving the grinding effect, and extending the life of the motor.

[0034] In addition, since the coarse material from the return guide cylinder and the initial material from the feed guide groove fall into the grinding mechanism at the same time, the material continuity of the grinding mechanism is improved, the space utilization rate is high, the friction between the materials is promoted, and the roundness and uniformity of the ground particles are improved.

[0035] During the return process, the coarse material is transported in a closed manner through the coarse material guide cylinder, return material conveyor and return material guide cylinder, which avoids dust escape and improves environmental protection.

[0036] The dust generated during the crushing of the barite is sucked away by the dust removal mechanism, so that the feed guide groove forms a downward airflow, which avoids the escape of dust, improves the working environment, and is beneficial to environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the present invention.

[0038] Figure 2 It is a schematic diagram of the structure of the return screen plate.

[0039] Figure 3 It is a schematic diagram of the structure of the coarse material guide tube.

[0040] Figure 4 It is a structural diagram of the dust removal mechanism.

[0041] In the figure: 1-shell; 2-grinding mechanism; 3-return material screen plate; 4-coarse material guide cylinder; 5-return material conveyor; 6-return material guide cylinder; 7-feed guide groove; 8-guide bar; 9-support folding edge; 10-support block; 11-pipe; 12-discharge chute; 13-discharge guide cylinder; 14-discharge conveyor; 15-grinding cylinder; 16-grinding bracket; 17-grinding roller; 18-support beam; 19-grinding motor; 20-dust removal mechanism; 21-dust hood; 22-box; 23-filter plate; 24-filter cage; 25-mesh cover; 26-water distribution hood; 27-water distribution pipe; 28-exhaust fan; 29-intake pipe. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0043] The present invention refers to Figure 1-4 .

[0044] The present invention provides a barite powder processing device, comprising:

[0045] A housing 1, wherein a feed guide groove 7 and a return guide cylinder 6 are provided on the top of the housing 1, and a coarse material guide cylinder 4 is provided on the side wall of the housing 1;

[0046] A return material conveyor 5, the inlet of which is connected to the coarse material guide cylinder 4 on the side wall of the housing 1, and the outlet of which is connected to the return material guide cylinder 6 on the top of the housing 1;

[0047] The housing 1 is also provided with:

[0048] A grinding mechanism 2, used for grinding the blocky barite material from the feed guide chute 7;

[0049] A return material sieve plate 3 is located below the grinding mechanism 2 and is used to sieve the material ground by the grinding mechanism 2 into coarse material and fine material. The lower end of the return material sieve plate 3 is connected to the coarse material guide cylinder 4 on the side wall of the housing 1.

[0050] The discharging mechanism is located below the return material sieve plate 3 , and the fine material sieved by the return material sieve plate 3 falls into the discharging mechanism. The discharging mechanism is used to guide the fine material out of the shell 1 .

[0051] During operation, the blocky barite material is put into the feed guide groove 7, and the material falls into the grinding mechanism 2. After being ground by the grinding mechanism 2, it falls onto the return material screen plate 3. The fine material with the required particle size falls into the discharging mechanism after passing through the return material screen plate 3, and is guided out of the housing 1 through the discharging mechanism. The coarse material with too large particle size and the blocky coarse material that has not been fully ground are screened by the return material screen plate 3, and then roll down along the return material screen plate 3 to the coarse material guide cylinder 4, and then enter the entrance of the return material conveyor 5. The return material conveyor 5 can convey the coarse material from the coarse material guide cylinder 4 to the return material guide cylinder 6. The coarse material of the return material guide cylinder 6 falls into the grinding mechanism 2 and is ground again.

[0052] According to the present invention, the material ground by the grinding mechanism 2 is screened by the return material screen plate 3, and the screened coarse material is conveyed to the return material guide cylinder 6 by the return material conveyor 5 after passing through the coarse material guide cylinder 4, so as to fall into the grinding mechanism 2 again for grinding, realizing the coarse material regrinding, avoiding the process of using a scraper to knock the coarse material away, resulting in component wear and consumption of the kinetic energy of the grinding mechanism 2, improving the grinding effect, and extending the life of the motor; in addition, since the return-grinded coarse material of the return material guide cylinder 6 and the initial material of the feed guide groove 7 fall into the grinding mechanism 2 at the same time, the material continuity of the grinding mechanism 2 is improved, the space utilization rate is high, the friction between the materials is promoted, and the roundness and uniformity of the ground particles are improved. In the process of returning the material, the coarse material is conveyed in a closed manner through the coarse material guide cylinder 4, the return material conveyor 5 and the return material guide cylinder 6, avoiding the escape of dust and improving environmental protection.

[0053] Furthermore, the return material screen plate 3 is arc-shaped and the concave arc surface is arranged upward, and the concave surface of the return material screen plate 3 is provided with a plurality of guide bars 8, which extend from the upper end of the return material screen plate 3 to the lower end of the return material screen plate 3.

[0054] Preferably, the distance between each two adjacent guide strips 8 is not greater than the diameter of the sieve holes of the return material sieve plate 3 .

[0055] The coarse materials are concentrated by the arc-shaped return material screen plate 3, which reduces the outlet size required for the coarse materials to be led out, is easy to manufacture, and has low sealing difficulty; the coarse materials are blocked and guided to fall by the guide strips 8, which prevents the sharp corners of the coarse materials from getting stuck on the screen holes after they fall into the screen holes, causing blockage, thereby improving the screening efficiency and the return material efficiency.

[0056] Furthermore, support folds 9 are provided on both sides of the return material screen plate 3, and support bars are provided on the two opposite inner walls of the shell 1, and the support folds 9 are mounted on the support bars; support blocks 10 are also provided on the other two opposite inner walls of the shell 1, and the two ends of the return material screen plate 3 are placed on the support blocks 10.

[0057] The return material screen plate 3 is supported by the support bars and the support blocks 10, which is convenient for installation and avoids rigid connection, so that the vibration of the grinding mechanism 2 is transmitted to the return material screen plate 3, thereby promoting the vibration of the return material screen plate 3 and improving the screening efficiency.

[0058] Furthermore, the support block 10 is provided with an arc groove that matches the convex arc surface of the return material screen plate 3, and both ends of the return material screen plate 3 are located in the arc groove.

[0059] The stability of the return material screen plate 3 is improved.

[0060] Furthermore, the coarse material guide cylinder 4 is a conical barrel, and the large end of the coarse material guide cylinder 4 is semicircular or semi-elliptical corresponding to the shape of the lower end of the return material screen plate 3, and the small end of the coarse material guide cylinder 4 is circular and connected to a connecting pipe 11, which is connected to the entrance of the return material conveyor 5.

[0061] The coarse material guide cylinder 4 is convenient for fitting with the lower end of the return material screen plate 3, and is convenient for connecting the connecting pipe 11 and the return material conveyor 5, thereby realizing a closed connection. During the return material process, the coarse material is conveyed in a closed manner through the coarse material guide cylinder 4, the return material conveyor 5 and the return material guide cylinder 6, thereby avoiding dust from escaping and improving environmental protection.

[0062] Furthermore, the discharging mechanism includes a discharging chute 12, a discharging guide cylinder 13 and a discharging conveyor 14. The discharging chute 12 is arc-shaped and the concave arc surface is arranged upward. The discharging chute 12 is connected to the inner wall of the shell 1. The lower end of the discharging chute 12 is connected to the discharging guide cylinder 13. The discharging guide cylinder 13 is arranged on the outer wall of the shell 1, and the discharging guide cylinder 13 is connected to the entrance of the discharging conveyor 14.

[0063] Preferably, support folds 9 are provided on both sides of the discharge chute 12, and support bars corresponding to the discharge chute 12 are provided on the two opposite inner walls of the shell 1, and the support folds 9 are mounted on the support bars; support blocks 10 corresponding to the discharge chute 12 are also provided on the other two opposite inner walls of the shell 1, and both ends of the discharge chute 12 are placed on the support blocks 10.

[0064] The fine material is led out to the discharging guide cylinder 13 through the discharging chute 12, and then transported through the discharging conveyor 14, which is convenient to use and easy to operate.

[0065] Furthermore, the grinding mechanism 2 includes a grinding cylinder 15, a support beam 18 and a grinding motor 19. The grinding cylinder 15 is coaxially arranged with the output shaft of the grinding motor 19. The grinding cylinder 15 is fixed to the upper side of the support beam 18, the grinding motor 19 is fixed to the lower side of the support beam 18, and the support beam 18 is fixed to the inner wall of the shell 1; a grinding bracket 16 is provided in the grinding cylinder 15, and a plurality of grinding rollers 17 are provided on the grinding bracket 16, and the grinding rollers 17 are distributed along the inner wall of the grinding cylinder 15; the grinding bracket 16 is rotatably connected to the support beam 18, and the output shaft of the grinding motor 19 passes through the support beam 18 and is transmission-connected to the grinding bracket 16.

[0066] Preferably, the grinding bracket 16 is connected to the support beam 18 via a bearing disc.

[0067] The grinding motor 19 drives the grinding bracket 16 to rotate, and the grinding roller 17 on the grinding bracket 16 is pressed on the inner wall of the grinding cylinder 15 under the action of centrifugal force, so as to grind the block of barite into powder; supported by the support beam 18, the ground material can quickly pass through the bottom of the grinding cylinder 15, avoiding the block material falling into the bottom of the grinding cylinder 15 from getting stuck and hitting the components, thereby improving the grinding efficiency and extending the service life of the device.

[0068] Furthermore, a dust removal mechanism 20 is included. A dust hood 21 is provided on the side wall of the housing 1 . The dust removal mechanism 20 is connected to the dust hood 21 through a pipeline. The dust hood 21 is located on one side of the grinding cylinder 15 .

[0069] It is convenient to absorb the dust generated when the barite is crushed, so that the feed guide groove 7 forms a downward airflow, avoids the escape of dust, improves the working environment, and is beneficial to environmental protection.

[0070] Furthermore, a conical screen cylinder is provided on the top of the grinding cylinder 15 , the large end of the conical screen cylinder is upward and in contact with the inner wall of the housing 1 , and the small end of the conical screen cylinder is connected to the top of the grinding cylinder 15 .

[0071] This prevents the block materials knocked away by the grinding bracket 16 from flying outside the grinding cylinder 15, which is convenient for protecting components such as the dust cover 21 and improving the grinding efficiency; at the same time, the conical screen cylinder has a small airflow resistance, ensuring that the feed guide groove 7 forms a downward airflow.

[0072] Furthermore, the dust removal mechanism 20 includes a box body 22, a filter plate 23 is provided in the middle of the box body 22, a filter cage 24 is provided on the filter plate 23, and a mesh cover 25 is provided on the outer wall of the filter cage 24; a water distribution cover 26 is provided directly above the filter cage 24, and a ring-shaped water distribution pipe 27 is provided on the lower side of the water distribution cover 26, and a plurality of nozzles are distributed on the inner side of the water distribution pipe 27, and the nozzles are arranged obliquely downward toward the mesh cover 25; an exhaust fan 28 is also provided on the top of the box body 22, and the exhaust fan 28 is used to extract air from the inside of the box body 22 to the outside; an air intake pipe 29 is also provided on the box body 22, one end of the air intake pipe 29 extends into the filter cage 24 from the bottom of the filter cage 24, and the other end of the air intake pipe 29 is connected to the dust hood 21.

[0073] Preferably, a water inlet pipe is provided on the water distribution cover 26, one end of the water inlet pipe is connected to the water distribution pipe 27, and the other end of the water inlet pipe extends out of the box and can be used to connect to a pressure water source such as an external tap water pipe.

[0074] Water is sprayed circumferentially on the top of the mesh cover 25 through the water pipe 27 and the nozzle. Under the adsorption and guidance of the flexible mesh cover 25, the water flows continuously downward along the mesh cover 25 to form a continuous breathable water curtain barrier; the exhaust fan 28 forms a negative pressure in the box 22, and the negative pressure is transmitted to the dust cover 21 through the air inlet pipe 29, so that the air flow with dust flows through the dust cover 21 and the air inlet pipe 29 to the filter cage 24, and passes through the filter cage 24 and the mesh cover 25. The moisture in the mesh cover 25 can fully absorb the dust, thereby achieving a sufficient dust removal effect. At the same time, under the action of the water flow, the dust attached to the outer wall of the filter cage 24 and the mesh cover 25 is washed down, and is concentrated to the bottom of the box 22 through the filter plate 23, avoiding blockage and having strong continuous working ability.

[0075] Although the embodiments of the present invention have been shown and described above, the above embodiments are merely exemplary and should not be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by those skilled in the art within the scope of information available from public channels and in combination with the technical inspiration provided by the present application documents are still within the scope of protection of the present application.

Claims

1. A barite powder processing device, characterized in that: include: A housing (1), wherein a feed guide groove (7) and a return guide cylinder (6) are provided on the top of the housing (1), and a coarse material guide cylinder (4) is provided on the side wall of the housing (1); a return material conveyor (5), wherein the inlet of the return material conveyor (5) is connected to the coarse material guide cylinder (4) on the side wall of the housing (1), and the outlet of the return material conveyor (5) is connected to the return material guide cylinder (6) at the top of the housing (1); The housing (1) is further provided with: A grinding mechanism (2) for grinding the blocky barite material from the feed channel (7); A return material screen plate (3) is located below the grinding mechanism (2) and is used to screen the material ground by the grinding mechanism (2) into coarse material and fine material. The lower end of the return material screen plate (3) is connected to the coarse material guide tube (4) on the side wall of the housing (1); The discharge mechanism is located below the return material sieve plate (3), and the fine material sieved by the return material sieve plate (3) falls into the discharge mechanism. The discharge mechanism is used to discharge the fine material out of the housing (1).

2. The barite powder processing device according to claim 1, characterized in that: The return material sieve plate (3) is arc-shaped and the concave arc surface is arranged upward. The concave surface of the return material sieve plate (3) is provided with a plurality of guide bars (8), and the guide bars (8) extend from the upper end of the return material sieve plate (3) to the lower end of the return material sieve plate (3).

3. The barite powder processing device according to claim 2, characterized in that: Support folds (9) are provided on both sides of the return material screen plate (3), and support bars are provided on two opposite inner side walls of the shell (1), on which the support folds (9) are mounted; support blocks (10) are also provided on the other two opposite inner side walls of the shell (1), and both ends of the return material screen plate (3) are placed on the support blocks (10).

4. The barite powder processing device according to claim 3, characterized in that: The support block (10) is provided with an arc-shaped groove which matches the convex arc surface of the return material screen plate (3), and both ends of the return material screen plate (3) are located in the arc-shaped groove.

5. The barite powder processing device according to claim 1, characterized in that: The coarse material guide tube (4) is a conical barrel, the large end of the coarse material guide tube (4) is semicircular or semi-elliptical corresponding to the shape of the lower end of the return material screen plate (3), the small end of the coarse material guide tube (4) is circular and connected to a connecting pipe (11), and the connecting pipe (11) is connected to the inlet of the return material conveyor (5).

6. The barite powder processing device according to claim 1, characterized in that: The discharging mechanism comprises a discharging chute (12), a discharging guide cylinder (13) and a discharging conveyor (14); the discharging chute (12) is arc-shaped and the concave arc surface is arranged upward; the discharging chute (12) is connected to the inner wall of the shell (1); the lower end of the discharging chute (12) is connected to the discharging guide cylinder (13); the discharging guide cylinder (13) is arranged on the outer wall of the shell (1); and the discharging guide cylinder (13) is connected to the inlet of the discharging conveyor (14).

7. The barite powder processing device according to claim 1, characterized in that: The grinding mechanism (2) comprises a grinding cylinder (15), a support beam (18) and a grinding motor (19); the grinding cylinder (15) and the output shaft of the grinding motor (19) are coaxially arranged; the grinding cylinder (15) is fixed to the upper side of the support beam (18); the grinding motor (19) is fixed to the lower side of the support beam (18); the support beam (18) is fixed to the inner wall of the housing (1); a grinding bracket (16) is arranged in the grinding cylinder (15); a plurality of grinding rollers (17) are arranged on the grinding bracket (16); the grinding rollers (17) are distributed along the inner wall of the grinding cylinder (15); the grinding bracket (16) is rotatably connected to the support beam (18); the output shaft of the grinding motor (19) passes through the support beam (18) and is transmission-connected to the grinding bracket (16).

8. The barite powder processing device according to claim 7, characterized in that: It also comprises a dust removal mechanism (20), a dust hood (21) is also provided on the side wall of the housing (1), the dust removal mechanism (20) and the dust hood (21) are connected via a pipeline, and the dust hood (21) is located on one side of the grinding cylinder (15).

9. The barite powder processing device according to claim 8, characterized in that: A conical screen cylinder is also provided on the top of the grinding cylinder (15), the large end of the conical screen cylinder is upward and in contact with the inner wall of the housing (1), and the small end of the conical screen cylinder is connected to the top of the grinding cylinder (15).

10. The barite powder processing device according to claim 8, characterized in that: The dust removal mechanism (20) comprises a box body (22), a filter plate (23) is provided in the middle of the box body (22), a filter cage (24) is provided on the filter plate (23), and a mesh cover (25) is sleeved on the outer wall of the filter cage (24); a water distribution cover (26) is provided directly above the filter cage (24), a ring-shaped water distribution pipe (27) is provided on the lower side of the water distribution cover (26), and a plurality of nozzles are distributed inside the water distribution pipe (27), and the nozzles are arranged obliquely downward toward the mesh cover (25); an exhaust fan (28) is also provided on the top of the box body (22), and the exhaust fan (28) is used to extract air from the box body (22) to the outside; an air intake pipe (29) is also provided on the box body (22), one end of the air intake pipe (29) extends from the bottom of the filter cage (24) into the filter cage (24), and the other end of the air intake pipe (29) is connected to the dust hood (21).

Images