Environment-friendly barite powder grinding equipment

Abstract

The invention relates to the technical field of barite grinding, in particular to environment-friendly barite powder grinding equipment which comprises a grinding barrel and a feeding unit. A grinding cavity is formed in the grinding barrel, a separation cavity communicated with the grinding cavity is formed in each of the two sides of the grinding cavity along the axis of the grinding barrel, a grinding unit is arranged in the grinding cavity and comprises a grinding roller swinging in a reciprocating mode around the axis of the grinding barrel in the grinding barrel, and the axis of the grinding roller is parallel to the axis of the grinding barrel; the grinding roller is in rolling fit with the inner wall of the grinding barrel, an air blowing opening is formed in the upper portion of the grinding roller and faces the inner wall of the grinding barrel, an air supply unit communicated with the air blowing opening is arranged on one side of the air blowing opening, the air supply unit supplies air to the air blowing opening, and barite in the grinding barrel is ground into powder through the grinding roller; and the air blowing opening blows airflow into the grinding barrel. The grinding effect of the grinding roller on barite powder is improved, and meanwhile the grinding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of barite grinding, and in particular to an environmentally friendly barite powder grinding device. Background Art

[0002] After being crushed, barite needs to be ground into barite powder to make it reach the qualified standard of fineness. The Chinese invention patent with the authorization announcement number CN211755860U discloses a new type of high-efficiency grinding device for producing ultra-fine barite powder, which grinds the barite powder by lifting and rotating the grinding block, but the thickness of the barite powder is relatively thick when it is piled together, so the grinding effect of the grinding block is not very ideal.

[0003] Chinese patent announcement number CN115090356B discloses an environmentally friendly barite powder grinding device, including a bottom plate and a control box, and also includes: a top plate, the top plate is arranged above the bottom plate and the two ends are respectively fixedly connected to the bottom plate through guide rods; a grinding assembly, the grinding assembly includes a fixed hopper, a discharge pipe, a mounting seat, a universal ball and a movable hopper, the fixed hopper is arranged above the bottom plate and the opening direction is upward, the fixed hopper is fixedly connected to the guide rod, the discharge pipe is installed at the bottom of the fixed hopper and is connected to the inside of the fixed hopper, and the discharge pipe is installed at the bottom of the fixed hopper and is connected to the inside of the fixed hopper. An annular stopper is installed on the inner wall of the tube, the mounting seat is arranged in the discharge pipe and is in close contact with the top of the annular stopper, the universal ball is arranged on the top of the mounting seat and is universally connected to the mounting seat, the movable hopper is arranged on the inner side of the fixed hopper and the opening direction is upward, the axis line of the movable hopper and the fixed hopper are colinear, the bottom of the movable hopper is fixedly connected to the universal ball, a first space is formed between the movable hopper and the fixed hopper, a second space is formed on the inner side of the movable hopper, and the second space and the first space are both used to place barite powder.

[0004] The above scheme grinds the barite powder in layers by setting up two hoppers, but can only improve the grinding effect of the barite powder to a certain extent. This is because a certain amount of barite powder needs to be put into the grinding equipment each time grinding, and the grinding equipment cannot discharge the barite powder synchronously during the grinding process, resulting in the barite powder that has met the fineness and the barite powder that has not reached the fineness being mixed together, which in turn hinders the grinding work of the grinding device, resulting in low grinding efficiency. Summary of the invention

[0005] In view of the above problems, an environmentally friendly barite powder grinding equipment is provided. A grinding chamber and a separation chamber are arranged in the grinding barrel, so that the grinding roller is always located in the grinding chamber when grinding the barite powder, and an air blowing port is arranged on one side of the grinding roller. Air is supplied to the air blowing port through an air supply unit. When the grinding roller reciprocates around the axis of the grinding barrel, the air blowing port blows air into the grinding chamber of the grinding barrel, so that the barite powder that meets the standards after grinding can be blown up by the air flow, while the barite powder that does not meet the standards cannot be blown up due to its large mass. In this way, the barite powder that meets the standards can float from the grinding chamber into the separation chamber, so that the proportion of barite powder that does not meet the standards in the grinding chamber will not decrease, so that the grinding roller can efficiently grind the barite powder.

[0006] To solve the problems of the prior art, the present invention provides an environmentally friendly barite powder grinding device, comprising a horizontally arranged grinding barrel and a feeding unit arranged on the upper part of the grinding barrel; the grinding barrel comprises a grinding chamber, and a separation chamber communicated with the grinding chamber is respectively arranged on both sides of the grinding chamber along the axis of the grinding barrel, a grinding unit is arranged in the grinding chamber, the grinding unit comprises a grinding roller which reciprocates around the axis of the grinding barrel in the grinding barrel, the axis of the grinding roller is parallel to the axis of the grinding barrel, the grinding roller and the inner wall of the grinding barrel are rollingly matched, an air blowing port is arranged above the grinding roller, the air blowing port faces the inner wall of the grinding barrel, an air supply unit connected with the air blowing port is arranged on one side of the air blowing port, the air supply unit supplies air to the air blowing port, after the grinding roller grinds the barite in the grinding barrel into powder, the air blowing port blows the air flow into the grinding barrel, the barite powder blown up by the air flow flows from the grinding chamber into the separation chamber, and the barite powder not blown up remains in the grinding chamber.

[0007] Preferably, a pressure frame is provided on the upper part of the grinding roller, a pressure rod is vertically fixed on the upper part of the pressure frame, a pressure sleeve is provided on the upper side of the pressure rod along the extension direction of the pressure rod, the pressure rod and the pressure sleeve are slidably matched, and a constant pressure unit for driving the pressure rod to slide in the pressure sleeve is provided on the upper part of the pressure sleeve.

[0008] Preferably, the constant pressure unit includes an inner tube that penetrates into the grinding barrel from the end of the grinding barrel along the axis of the grinding barrel, the inner tube is connected to the pressure sleeve, a constant pressure chamber is provided on one side of the grinding barrel, the constant pressure chamber is connected to the end of the inner tube located outside the grinding barrel, a weight block is provided in the constant pressure chamber for movement in the vertical direction, the constant pressure chamber below the weight block is filled with hydraulic oil, the inner tube and the pressure sleeve are also filled with hydraulic oil, and the constant pressure chamber filled with hydraulic oil is connected to the pressure sleeve through the inner tube.

[0009] Preferably, an outer tube is fixedly sleeved on the outside of the inner tube, the outer tube passes through the end of the grinding barrel, the axis of the outer tube is colinear with the axis of the inner tube, and a driving unit for driving the outer tube to reciprocate is provided on the outer tube located outside the grinding barrel.

[0010] Preferably, the driving unit includes a gear ring fixedly mounted on the outer tube, the lower side of the gear ring is meshed with arc-shaped teeth, a swing arm is fixedly arranged at the lower part of the arc-shaped teeth along the radial direction of the arc-shaped teeth, one end of the swing arm away from the arc-shaped teeth coincides with the circle of the arc-shaped teeth, a sliding groove is opened on the swing arm along the extension direction of the swing arm, a sliding block is slidably arranged in the sliding groove along the extension direction of the sliding groove, a rotating disk is rotatably arranged on the side of the swing arm away from the grinding barrel, the axis of the rotating disk is parallel to the axis of the grinding barrel, a hinge column is arranged on the rotating disk, the hinge column rotates around the axis of the rotating disk when the rotating disk rotates, the hinge column extends into the sliding block and is hinged with the sliding block, the straight line connected by the horizontal projection of the center of the rotating disk and the center of the arc-shaped teeth is perpendicular to the horizontal plane, and a first rotating driver for driving the rotating disk to rotate is also arranged on one side of the rotating disk.

[0011] Preferably, there is an annular gap between the inner tube and the outer tube, a fan is arranged at the end of the annular gap to rotate around the axis of the annular gap, the axis of the fan is colinear with the axis of the annular gap, an air cavity is arranged on the pressure frame, the air outlet is arranged on the pressure frame and connected with the air cavity, a bellows is arranged between the outer tube and the air cavity, and the bellows connects the air cavity and the annular gap.

[0012] Preferably, a discharge unit is provided below the grinding barrel, the discharge unit includes a discharge box connected to the separation chamber, the discharge box is located below the grinding barrel, a filter chamber is provided in the discharge box, a filter screen is provided at the upper part of the filter chamber, the mesh surface of the filter screen is inclined, and an air pump is provided on the side wall of the filter chamber, the air pump is used to extract the air in the filter chamber.

[0013] Preferably, a cleaning unit for cleaning the filter is provided below the filter, and the cleaning unit includes a rotating shaft horizontally arranged below the filter, and a plurality of knocking hammers are evenly fixed on the rotating shaft. When the rotating shaft rotates, the knocking hammers knock on the lower part of the filter, and a second rotating driver for driving the rotating shaft to rotate is provided at the end of the rotating shaft.

[0014] Preferably, scrapers are provided on both sides of the grinding roller to slide with the inner wall of the grinding barrel, and the contact end surfaces of the scrapers and the grinding barrel are arc-shaped structures.

[0015] Preferably, a feed pipe communicating with the grinding chamber is horizontally arranged at the upper part of the grinding barrel, a spiral blade is rotatably arranged in the feed pipe, and a third rotary driver for driving the spiral blade to rotate is arranged at the end of the feed pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges a grinding chamber and a separation chamber in the grinding barrel, so that the grinding roller is always located in the grinding chamber when grinding the barite powder, and an air blowing port is arranged on one side of the grinding roller, and air is supplied to the air blowing port through an air supply unit. When the grinding roller reciprocates around the axis of the grinding barrel, the air blowing port blows the air flow into the grinding chamber of the grinding barrel, so that the barite powder that meets the standard after grinding can be blown up by the air flow, while the barite powder that does not meet the standard cannot be blown up due to its large mass. In this way, the barite powder that meets the standard can float from the grinding chamber into the separation chamber, so that the proportion of the barite powder that does not meet the standard in the grinding chamber will not decrease. At the same time, a constant pressure bin is arranged on one side of the grinding barrel, and a weight block is arranged in the constant pressure bin, and a grinding pressure is provided to the grinding roller by the weight block, thereby ensuring that the pressure of the grinding roller is always constant, thereby improving the refinement uniformity of the barite powder after the grinding process, and improving the grinding efficiency of the grinding roller.

[0017] 2. The present invention arranges arc-shaped teeth and a swing arm, and arranges a rotating disk on one side of the swing arm. The rotating disk is driven to rotate by a first rotary driver, so that the rotating disk drives the swing arm to swing back and forth, and then the arc-shaped teeth drive the gear ring to rotate back and forth. In this way, the pressure sleeve and pressure rod arranged on the outer tube can drive the pressure frame to swing back and forth in the grinding barrel, so that the grinding roller arranged on the pressure frame can repeatedly grind the barite powder in the grinding barrel.

[0018] 3. By setting a hammer at the bottom of the filter and driving the hammer to continuously knock on the filter through the rotating shaft, the filter is prevented from being blocked by barite powder, ensuring that the airflow can always flow from the grinding chamber to the separation chamber when the grinding equipment is running continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of an environmentally friendly barite powder grinding device of the present invention.

[0020] Figure 2 It is a side view of an environmentally friendly barite powder grinding device of the present invention.

[0021] Figure 3 The invention is an environmentally friendly barite powder grinding equipment Figure 2 Schematic cross-sectional view at AA in the middle.

[0022] Figure 4 This is a cutaway perspective diagram of an environmentally friendly barite powder grinding device of the present invention. Figure 1 .

[0023] Figure 5 The invention is an environmentally friendly barite powder grinding equipment Figure 4 A local enlarged schematic diagram of point B in the middle.

[0024] Figure 6The invention is an environmentally friendly barite powder grinding equipment Figure 4 A partial enlarged schematic diagram of point C in the middle.

[0025] Figure 7 This is a cutaway perspective diagram of an environmentally friendly barite powder grinding device of the present invention. Figure 2 .

[0026] Figure 8 The invention is an environmentally friendly barite powder grinding equipment Figure 7 A partial enlarged schematic diagram of point D in the middle.

[0027] Fig. 9 The invention is an environmentally friendly barite powder grinding equipment Figure 7 A partial enlarged schematic diagram of point E in the middle.

[0028] Fig.10 It is a three-dimensional schematic diagram of an environmentally friendly barite powder grinding equipment of the present invention after removing part of the constant pressure unit and part of the grinding barrel.

[0029] Fig.11 The invention is an environmentally friendly barite powder grinding equipment Fig.10 The partially enlarged schematic diagram of the F figure.

[0030] The numbers in the figure are: 1. Grinding barrel; 11. Feeding unit; 111. Feeding pipe; 112. Spiral blade; 113. Third rotary driver; 12. Grinding chamber; 13. Separation chamber; 2. Grinding unit; 21. Grinding roller; 22. Air outlet; 23. Air supply unit; 231. Fan; 232. Bellows; 233. Air chamber; 234. Transmission unit; 2341. Transmission wheel; 2342. Transmission belt; 24. Constant pressure unit; 241. Inner tube; 242. Constant pressure bin; 243. Weight block; 244. Hoist; 25. Pressure rack; 26. Pressure rod; 27. Pressure sleeve; 28. Drive unit; 281. Arc teeth; 282. Swing arm; 2821. Sliding groove; 2822. Sliding block; 283. Rotating disk; 284. Gear ring; 285. First rotary driver; 286. First gear; 287. Second gear; 29. ​​Outer tube; 3. Discharge unit; 31. Discharge box; 32. Filter chamber; 33. Filter screen; 34. Air pump; 35. Cleaning unit; 351. Second rotary driver; 352. Rotating shaft; 353. Beating hammer; 4. Scraper. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figure 1-Figure 5An environmentally friendly barite powder grinding device comprises a horizontally arranged grinding barrel 1 and a feeding unit 11 arranged on the upper part of the grinding barrel 1; the grinding barrel 1 comprises a grinding chamber 12, and a separation chamber 13 communicating with the grinding chamber 12 is respectively arranged on both sides of the grinding chamber 12 along the axis of the grinding barrel 1, and a grinding unit 2 is arranged in the grinding chamber 12, and the grinding unit 2 comprises a grinding roller 21 which reciprocates around the axis of the grinding barrel 1 in the grinding barrel 1, and the axis of the grinding roller 21 is parallel to the axis of the grinding barrel 1, and the grinding roller 21 is parallel to the axis of the grinding barrel 1. The inner wall of the grinding barrel 1 rolls together, and a blowing port 22 is provided above the grinding roller 21. The blowing port 22 faces the inner wall of the grinding barrel 1, and an air supply unit 23 connected with the blowing port 22 is provided on one side of the blowing port 22. The air supply unit 23 supplies air to the blowing port 22. After the grinding roller 21 grinds the barite in the grinding barrel 1 into powder, the blowing port 22 blows the air flow into the grinding barrel 1, and the barite powder blown up by the air flow flows from the grinding chamber 12 into the separation chamber 13, and the barite powder not blown up remains in the grinding chamber 12.

[0033] When grinding barite powder, in order to ensure that the fineness of the barite powder can meet the specified standard, it is usually necessary to increase the grinding times and grinding pressure of the barite powder, and the increase in the grinding times will lead to an increase in processing efficiency. The existing grinding equipment cannot discharge the barite powder that meets the standard in time during the grinding process, resulting in the mixing of barite powder that meets the standard and barite powder that does not meet the standard, which in turn leads to the inability to grind the barite powder that does not meet the standard efficiently, and even some barite powder that does not meet the standard cannot be ground. As a result, the fineness of the final barite powder is uneven.

[0034] In order to avoid the above situation, the barite powder grinding equipment is further optimized and designed so that the refined barite powder can be discharged in time during the grinding process. In this way, the barite powder remaining in the barite powder grinding equipment is up to standard barite powder, which improves the grinding efficiency of the barite powder. The specific structure and working steps of the grinding equipment are as follows: During grinding, first, the feeding unit 11 puts a certain amount of barite powder into the grinding barrel 1. It is worth noting that the grinding barrel 1 does not rotate, and the barite powder put into the grinding barrel 1 is crushed and ground by the grinding roller 21 swinging around the axis of the grinding barrel 1. The swinging grinding roller 21 is always located in the grinding chamber 12. After the barite powder is ground by the grinding roller 21, the air outlet 22 blows air to the barite powder, and the barite powder with a standard fineness can be blown up. Since the grinding chamber 12 and the separation chamber 13 are interconnected, the barite powder blown up in this way can float into the separation chamber 13 through the grinding chamber 12, while the barite powder that is not blown up temporarily stays in the grinding chamber 12 because of its own large weight and does not reach the standard fineness. After the grinding roller 21 performs a secondary grinding on the barite powder temporarily staying in the grinding chamber 12 and reaches the standard fineness, it can be blown up and discharged by the flowing airflow. This ensures that the barite powder that meets the standards can be discharged from the grinding chamber 12 in a timely manner, ensures that the proportion of barite powder that does not meet the standards in the grinding chamber 12 will not gradually decrease during grinding, and improves the grinding effect of the grinding roller 21 on the barite powder.

[0035] Reference Figure 1 and Figure 5 A pressure frame 25 is sleeved on the upper part of the grinding roller 21, a pressure rod 26 is vertically fixed on the upper part of the pressure frame 25, a pressure sleeve 27 is sleeved on the upper side of the pressure rod 26 along the extension direction of the pressure rod 26, the pressure rod 26 and the pressure sleeve 27 are slidably matched, and a constant pressure unit 24 for driving the pressure rod 26 to slide in the pressure sleeve 27 is arranged on the upper part of the pressure sleeve 27.

[0036] Reference Figure 1-Figure 3 and Figure 7 The constant pressure unit 24 includes an inner tube 241 which penetrates into the grinding barrel 1 from the end of the grinding barrel 1 along the axis of the grinding barrel 1, the inner tube 241 is connected to the pressure sleeve 27, a constant pressure bin 242 is arranged on one side of the grinding barrel 1, the constant pressure bin 242 is connected to the end of the inner tube 241 located on the outside of the grinding barrel 1, a weight block 243 is arranged in the constant pressure bin 242 for movement in the vertical direction, the constant pressure bin 242 below the weight block 243 is filled with hydraulic oil, the inner tube 241 and the pressure sleeve 27 are also filled with hydraulic oil, and the constant pressure bin 242 filled with hydraulic oil is connected to the pressure sleeve 27 through the inner tube 241.

[0037] A hoist 244 connected to a weight block 243 is also provided at the upper part of the constant pressure bin 242. The weight block 243 is in a lifting state when the grinding equipment is in a non-grinding state, that is, the grinding roller 21 is in a non-contact state with the inner wall of the grinding barrel 1. When the feeding unit 11 starts to feed the grinding barrel 1, the hoist 244 puts down the weight block 243. The weight block 243 presses the hydraulic oil in the constant pressure bin 242 under its own weight, so that the hydraulic oil in the constant pressure bin 242 flows into the inner tube 241 and finally flows into the pressure sleeve 27. The pressure rod 26 in the pressure sleeve 27 pushes the pressure frame 25, so that the grinding roller 21 rotating on the pressure frame 25 presses the inner wall of the grinding barrel 1. Since the mass of the weight block 243 is constant, the pressure of the grinding roller 21 is provided by the weight block 243, so that the pressure of the grinding roller 21 is always constant, thereby improving the refinement uniformity of the barite powder after the grinding process.

[0038] Reference Figure 1 and Figure 5 An outer tube 29 is fixedly sleeved on the outside of the inner tube 241. The outer tube 29 passes through the end of the grinding barrel 1. The axis of the outer tube 29 is colinear with the axis of the inner tube 241. A driving unit 28 for driving the outer tube 29 to rotate reciprocally is arranged on the outer tube 29 located outside the grinding barrel 1.

[0039] Reference Figure 8 , Fig.10 and Fig.11 The driving unit 28 includes a toothed ring 284 fixedly sleeved on the outer tube 29, the lower side of the toothed ring 284 is meshed with an arc-shaped tooth 281, a swing arm 282 is fixedly arranged at the lower part of the arc-shaped tooth 281 along the radial direction of the arc-shaped tooth 281, and the end of the swing arm 282 away from the arc-shaped tooth 281 coincides with the circle of the arc-shaped tooth 281, a sliding groove 2821 is opened on the swing arm 282 along the extension direction of the swing arm 282, and a sliding block 2822 is slidably arranged in the sliding groove 2821 along the extension direction of the sliding groove 2821, and the end of the swing arm 282 away from the arc-shaped tooth 281 coincides with the circle of the arc-shaped tooth 281. A rotating disk 283 is rotatably provided on one side of the grinding barrel 1, and the axis of the rotating disk 283 is parallel to the axis of the grinding barrel 1. A hinge column is provided on the rotating disk 283, and the hinge column rotates around the axis of the rotating disk 283 when the rotating disk 283 rotates. The hinge column extends into the sliding block 2822 and is hinged to the sliding block 2822. The straight line connecting the projections of the center of the rotating disk 283 and the center of the arc tooth 281 in the horizontal direction is perpendicular to the horizontal plane. A first rotating driver 285 for driving the rotating disk 283 to rotate is also provided on one side of the rotating disk 283.

[0040] The driving unit 28 further includes a first gear 286 and a second gear 287 . The first gear 286 is fixedly disposed on the rotating disk 283 . The second gear 287 is disposed on one side of the first gear 286 and meshes with the first gear 286 . The diameter of the first gear 286 is greater than that of the second gear 287 . The first rotary driver 285 is preferably a servo motor. When the feeding unit 11 puts the barite powder into the grinding barrel 1, the first rotary driver 285 starts to start. The first rotary driver 285 drives the second gear 287 to rotate. Since the diameter of the second gear 287 is smaller than the diameter of the first gear 286, the rotation speed of the first gear 286 is lower than the rotation speed of the second gear 287. The rotating disk 283 drives the sliding block 2822 to slide in the sliding groove 2821 through the hinge column. The hinge column arranged on the rotating disk 283 can drive the swing arm 282 to swing back and forth when the rotating disk 283 rotates, so that the arc-shaped teeth 281 fixedly connected to the swing arm 282 swing synchronously with the swing arm 282, so that the gear ring 284 meshing with the arc-shaped teeth 281 can drive the outer tube 29 to rotate back and forth, and through the transmission of the pressure sleeve 27 and the pressure rod 26, the grinding roller 21 arranged on the pressure frame 25 rolls back and forth in the grinding barrel 1. In this way, the grinding effect of the barite powder is achieved.

[0041] Reference Figure 5 , Fig. 9 and Fig.10 : There is an annular gap between the inner tube 241 and the outer tube 29, and a fan 231 is arranged at the end of the annular gap to rotate around the axis of the annular gap, and the axis of the fan 231 is colinear with the axis of the annular gap. An air cavity 233 is arranged on the pressure frame 25, and the air outlet 22 is arranged on the pressure frame 25 and connected with the air cavity 233. A bellows 232 is arranged between the outer tube 29 and the air cavity 233, and the bellows 232 connects the air cavity 233 and the annular gap.

[0042] The air supply unit 23 also includes a transmission unit 234, which includes two transmission wheels 2341 and a transmission belt 2342. The two transmission wheels 2341 are respectively arranged on the output end of the first rotary driver 285 and the end of the fan 231. The transmission belt 2342 is respectively set on the two transmission wheels 2341 and cooperates with the two transmission wheels 2341. The transmission wheel 2341 fixedly connected to the first rotary driver 285 is located at the lower side, and the transmission wheel 2341 connected to the fan 231 is located at the upper side. The first gear 286 and the second gear 287 are set to ensure that the first rotary driver 285 drives the fan 231 to rotate at a high speed, and the grinding roller 21 does not swing too fast. After the fan 231 rotates, the fan 231 introduces the outside air into the annular gap, and discharges the air into the air cavity 233 through the bellows 232, and finally blows it out through the air outlet 22, thereby achieving the effect of timely discharge of barite powder during grinding.

[0043] Reference Figure 4 , Figure 6 and Figure 7 A discharge unit 3 is provided below the grinding barrel 1, and the discharge unit 3 includes a discharge box 31 connected to the separation chamber 13. The discharge box 31 is located below the grinding barrel 1. A filter chamber 32 is provided in the discharge box 31. A filter screen 33 is provided on the upper part of the filter chamber 32. The mesh surface of the filter screen 33 is inclined. An air pump 34 is provided on the side wall of the filter chamber 32. The air pump 34 is used to extract the air in the filter chamber 32.

[0044] Reference Figure 1 , Figure 2 and Figure 6 A cleaning unit 35 for cleaning the filter 33 is provided below the filter 33. The cleaning unit 35 includes a rotating shaft 352 which is horizontally arranged below the filter 33. A plurality of knocking hammers 353 are evenly fixed on the rotating shaft 352. When the rotating shaft 352 rotates, the knocking hammers 353 knock on the lower part of the filter 33. A second rotating driver 351 for driving the rotating shaft 352 to rotate is provided at the end of the rotating shaft 352.

[0045] After the air supply unit 23 supplies air to the air port, the outside air first enters the grinding chamber 12. In order to ensure that the air can flow smoothly from the grinding chamber 12 into the separation chamber 13, the air pump 34 arranged on the side wall of the filter chamber 32 is started, and the air pump 34 extracts the air in the filter chamber 32. At the same time, the second rotary driver 351 is started synchronously. The second rotary driver 351 is preferably a servo motor. The second rotary driver 351 drives the rotating shaft 352 to rotate. The rotating shaft 352 continuously strikes the filter screen 33 through the knocking hammer 353, so that the barite powder accumulated on the upper part of the filter screen 33 is shaken off. Since the filter screen 33 is inclined, the shaken barite powder falls into the bottom of the discharge box 31. The barite powder after grinding is received by the discharge box 31, and under the continuous knocking of the knocking hammer 353, the barite powder accumulated on the upper part of the filter screen 33 is not easy to block the filter screen 33. This ensures that when the grinding equipment is in continuous operation, the airflow can always flow from the grinding chamber 12 to the separation chamber 13.

[0046] Reference Figure 7 and Fig.10 Scrapers 4 are arranged on both sides of the grinding roller 21 to slide with the inner wall of the grinding barrel 1, and the contact end surfaces of the scrapers 4 and the grinding barrel 1 are arc-shaped structures.

[0047] The scraper 4 is fixedly arranged on the outer tube 29. Some of the barite powder after grinding will stick to the inner wall of the grinding barrel 1 and cannot be blown off by the airflow. In this way, the scraper 4 is used to scrape off the barite powder stuck to the inner wall of the grinding barrel 1, thereby avoiding the situation that some barite powder remains in the grinding chamber 12 and cannot be discharged.

[0048] Reference Figure 2 and Figure 3 A feed pipe 111 communicating with the grinding chamber 12 is horizontally arranged at the upper part of the grinding barrel 1, a spiral blade 112 is rotatably arranged in the feed pipe 111, and a third rotary driver 113 for driving the spiral blade 112 to rotate is arranged at the end of the feed pipe 111.

[0049] Since the feeding method of the grinding equipment adopts spiral feeding, the feeding pipe 111 is filled with the barite powder to be fed, and the barite powder flying in the grinding chamber 12 cannot overflow through the feeding pipe 111.

[0050] Working principle: When grinding, first, the feeding unit 11 puts a certain amount of barite powder into the grinding barrel 1. It is worth noting that the grinding barrel 1 does not rotate, and the barite powder put into the grinding barrel 1 is crushed and ground by the grinding roller 21 swinging around the axis of the grinding barrel 1. The swinging grinding roller 21 is always located in the grinding chamber 12. After the barite powder is ground by the grinding roller 21, the air outlet 22 blows air to the barite powder, and the barite powder with a fineness reaching the standard can be blown up. Since the grinding chamber 12 and the separation chamber 13 are interconnected, the barite powder blown up in this way can float into the separation chamber 13 through the grinding chamber 12 without being blown up. The barite powder does not reach the standard fineness due to its own large weight and is temporarily retained in the grinding chamber 12. After the grinding roller 21 performs secondary grinding on the barite powder temporarily retained in the grinding chamber 12 and reaches the standard fineness, it can be blown up and discharged by the flowing airflow. At the same time, the discharge unit 3 draws out the air in the separation chamber 13, so that the air in the grinding chamber 12 can flow into the separation chambers 13 on both sides respectively, thereby guiding the flow direction of the airflow, and then achieving the timely discharge of the barite powder that meets the standard from the grinding chamber 12.

[0051] During the grinding process, the lifting machine 244 lowers the weight block 243, and the weight block 243 squeezes the hydraulic oil in the constant pressure chamber 242. Since the mass of the weight block 243 is constant, the squeezing force of the weight block 243 on the hydraulic oil in the constant pressure chamber 242 remains unchanged. The weight block 243 presses the hydraulic oil in the constant pressure chamber 242 under its own weight, so that the hydraulic oil in the constant pressure chamber 242 flows into the inner tube 241 and finally flows into the pressure sleeve 27. The pressure rod 26 in the pressure sleeve 27 pushes the pressure frame 25, so that the grinding roller 21 rotating on the pressure frame 25 presses the inner wall of the grinding barrel 1.

[0052] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An environmentally friendly barite powder grinding device, comprising a horizontally arranged grinding barrel (1) and a feeding unit (11) arranged on the upper part of the grinding barrel (1); It is characterized in that The grinding barrel (1) includes a grinding chamber (12). A separation chamber (13) communicating with the grinding chamber (12) is provided on both sides of the grinding chamber (12) along the axis of the grinding barrel (1). A grinding unit (2) is provided in the grinding chamber (12). The grinding unit (2) includes a grinding roller (21) that reciprocates around the axis of the grinding barrel (1) in the grinding barrel (1). The axis of the grinding roller (21) is parallel to the axis of the grinding barrel (1). The grinding roller (21) and the inner wall of the grinding barrel (1) are in rolling engagement. A blowing port (22) is provided on the side thereof, the blowing port (22) faces the inner wall of the grinding barrel (1), and an air supply unit (23) connected to the blowing port (22) is provided on one side of the blowing port (22). The air supply unit (23) supplies air to the blowing port (22). After the grinding roller (21) grinds the barite in the grinding barrel (1) into powder, the blowing port (22) blows air into the grinding barrel (1), and the barite powder blown up by the air flow flows from the grinding chamber (12) into the separation chamber (13), and the barite powder not blown up remains in the grinding chamber (12).

2. An environmentally friendly barite powder grinding equipment according to claim 1, characterized in that, A pressure frame (25) is sleeved on the upper part of the grinding roller (21), a pressure rod (26) is vertically fixedly arranged on the upper part of the pressure frame (25), a pressure sleeve (27) is sleeved on the upper side of the pressure rod (26) along the extension direction of the pressure rod (26), the pressure rod (26) and the pressure sleeve (27) are slidably matched, and a constant pressure unit (24) is arranged on the upper part of the pressure sleeve (27) for driving the pressure rod (26) to slide in the pressure sleeve (27).

3. An environmentally friendly barite powder grinding equipment according to claim 2, characterized in that, The constant pressure unit (24) comprises an inner tube (241) which penetrates into the grinding barrel (1) from the end of the grinding barrel (1) along the axis of the grinding barrel (1); the inner tube (241) is connected to the pressure sleeve (27); a constant pressure chamber (242) is arranged on one side of the grinding barrel (1); the constant pressure chamber (242) is connected to the end of the inner tube (241) located outside the grinding barrel (1); a weight block (243) is arranged in the constant pressure chamber (242) to move in a vertical direction; the constant pressure chamber (242) below the weight block (243) is filled with hydraulic oil; the inner tube (241) and the pressure sleeve (27) are also filled with hydraulic oil; the constant pressure chamber (242) filled with hydraulic oil is connected to the pressure sleeve (27) via the inner tube (241).

4. An environmentally friendly barite powder grinding equipment according to claim 3, characterized in that, An outer tube (29) is fixedly sleeved on the outside of the inner tube (241). The outer tube (29) passes through the end of the grinding barrel (1). The axis of the outer tube (29) is colinear with the axis of the inner tube (241). A driving unit (28) for driving the outer tube (29) to reciprocate is provided on the outer tube (29) located outside the grinding barrel (1).

5. An environmentally friendly barite powder grinding equipment according to claim 4, characterized in that, The driving unit (28) comprises a gear ring (284) fixedly sleeved on the outer tube (29), the lower side of the gear ring (284) meshing with an arc-shaped tooth (281), a swing arm (282) fixedly arranged at the lower part of the arc-shaped tooth (281) along the radial direction of the arc-shaped tooth (281), one end of the swing arm (282) away from the arc-shaped tooth (281) coincides with the circle of the arc-shaped tooth (281), a sliding groove (2821) is provided on the swing arm (282) along the extension direction of the swing arm (282), a sliding block (2822) is slidably arranged in the sliding groove (2821) along the extension direction of the sliding groove (2821), and a swing arm (2821) is provided on the swing arm (2821) to slide along the extension direction of the sliding groove (2821). 2) A rotating disk (283) is rotatably disposed on a side away from the grinding barrel (1), the axis of the rotating disk (283) being parallel to the axis of the grinding barrel (1), a hinge column being disposed on the rotating disk (283), the hinge column rotating around the axis of the rotating disk (283) when the rotating disk (283) rotates, the hinge column extending into the sliding block (2822) and being hinged to the sliding block (2822), a straight line connected by projections of the center of the rotating disk (283) and the center of the arc-shaped teeth (281) in the horizontal direction being perpendicular to the horizontal plane, and a first rotation driver (285) for driving the rotating disk (283) to rotate is also disposed on one side of the rotating disk (283).

6. An environmentally friendly barite powder grinding equipment according to claim 4, characterized in that, An annular gap is provided between the inner tube (241) and the outer tube (29); a fan (231) is provided at the end of the annular gap and rotates around the axis of the annular gap; the axis of the fan (231) is colinear with the axis of the annular gap; an air cavity (233) is provided on the pressure frame (25); an air outlet (22) is provided on the pressure frame (25) and is connected to the air cavity (233); a bellows (232) is provided between the outer tube (29) and the air cavity (233); the bellows (232) connects the air cavity (233) and the annular gap.

7. An environmentally friendly barite powder grinding equipment according to claim 1, characterized in that, A discharge unit (3) is arranged below the grinding barrel (1), the discharge unit (3) comprising a discharge box (31) connected to the separation chamber (13), the discharge box (31) being located below the grinding barrel (1), a filter chamber (32) being arranged in the discharge box (31), a filter screen (33) being arranged at the top of the filter chamber (32), the screen surface of the filter screen (33) being inclined, an air pump (34) being arranged on the side wall of the filter chamber (32), the air pump (34) being used to extract air from the filter chamber (32).

8. An environmentally friendly barite powder grinding equipment according to claim 7, characterized in that, A cleaning unit (35) for cleaning the filter (33) is arranged below the filter (33); the cleaning unit (35) comprises a rotating shaft (352) arranged below the filter (33) in a horizontally rotatable manner; a plurality of knocking hammers (353) are evenly and fixedly arranged on the rotating shaft (352); when the rotating shaft (352) rotates, the knocking hammers (353) knock on the lower part of the filter (33); and a second rotation driver (351) for driving the rotating shaft (352) to rotate is arranged at the end of the rotating shaft (352).

9. An environmentally friendly barite powder grinding equipment according to claim 1, characterized in that, Scrapers (4) are respectively arranged on both sides of the grinding roller (21) and are slidably matched with the inner wall of the grinding barrel (1); the contact end surfaces of the scrapers (4) and the grinding barrel (1) are arc-shaped structures.

10. The environmentally friendly barite powder grinding equipment according to claim 1, characterized in that: A feed pipe (111) communicating with the grinding chamber (12) is horizontally arranged at the upper part of the grinding barrel (1), a spiral blade (112) is rotatably arranged in the feed pipe (111), and a third rotary driver (113) for driving the spiral blade (112) to rotate is arranged at the end of the feed pipe (111).

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