Grinding equipment for sodium tungstate production

Abstract

The invention relates to the technical field of sodium tungstate grinding devices, in particular to sodium tungstate production grinding equipment which comprises a rack, a grinding structure, a circulating air supply structure, a screening backflow structure, a mounting structure, a shaking structure and a feeding structure. Toxic gas generated during grinding is purified through the circulating air supply structure, hot air is supplied into the grinding structure, the situation that the grinding effect becomes poor due to moisture regaining of sodium tungstate crystals is avoided, and the grinding effect is improved; sodium tungstate crystals are ground through the grinding structure, feeding is conducted through the feeding structure, it is guaranteed that materials make full contact with a grinding medium, and the grinding efficiency is improved; whether the particle size of the material meets the requirement or not is detected through the screening backflow structure, the material which does not meet the requirement can automatically flow back to the grinding cavity to be continuously ground, and it is ensured that the particle size of the finally produced sodium tungstate product completely meets the standard; screens with different mesh numbers are replaced through the mounting structure, the mounting and dismounting efficiency of the screens is improved, the screens are shaken through the shaking structure, and the screening effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sodium tungstate grinding devices, in particular to grinding equipment for sodium tungstate production. Background Art

[0002] As an important chemical raw material, sodium tungstate has extensive and important applications in many fields. Anhydrous sodium tungstate is generally a white crystalline powder; dihydrate sodium tungstate is a colorless orthorhombic plate-like crystal, which is easily weathered in the air and becomes a white powder after losing the crystal water. It is hygroscopic and easily absorbs moisture from the air. During the production and processing of sodium tungstate, the sodium tungstate crystals need to be ground to make their particle size meet the production requirements.

[0003] However, in the current sodium tungstate production and grinding process, many commonly used grinding equipments adopt relatively simple grinding structures. For example, ordinary ball mills rely on the impact and friction of grinding balls for grinding. However, for sodium tungstate, which needs to reach a specific particle size and has a narrow particle size distribution requirement, it is often difficult to accurately control the fineness of grinding, resulting in uneven particle sizes in the final product, which does not meet the strict requirements of high-quality sodium tungstate production for particle size uniformity. At the same time, in order to prevent sodium tungstate from absorbing moisture and crystallizing, hot air will be introduced during grinding. Too high a temperature during grinding will produce toxic gases, and the gas discharged into the air will easily affect the health of the staff. When the material enters, pouring too much at one time will affect the material from being fully in contact with the grinding structure, resulting in poor grinding effect. Poor pouring will easily reduce the efficiency of production grinding. At the same time, it is not easy to screen out sodium tungstate powder of different particle sizes from the ground product, and the particle uniformity is poor. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a grinding device for producing sodium tungstate.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a grinding device for sodium tungstate production, comprising a frame, a grinding structure arranged on the frame, a circulating air supply structure arranged on the grinding structure, a screening and reflux structure arranged on the grinding structure, a mounting structure arranged on the screening and reflux structure, a shaking structure arranged on the grinding structure, and a feeding structure arranged on an open space on one side of the grinding structure; The grinding structure comprises a grinding machine shell and a grinding sleeve fixedly connected to the inside of the grinding machine shell, the grinding machine shell is fixedly connected to the frame, a fixing seat is fixedly connected to the frame, a rotating seat is rotatably connected to the fixing seat, a grinding cylinder is fixedly connected to the rotating seat, a plurality of groups of grinding balls are rotatably connected to the grinding cylinder, the grinding balls are rollingly connected to the grinding sleeve, and a sound-absorbing and heat-insulating layer is provided inside the grinding sleeve; The air circulation structure comprises an inner gear ring and an outer gear ring, the bottom end of the rotating seat is fixedly connected to the inner gear ring, the inner part of the inner gear ring is meshed with the outer gear ring, the outer gear ring is fixedly connected to the cyclone separator, the fixed seat is fixedly connected to the base, the base is rotatably connected to the cyclone separator, the bottom end of the base is connected to an exhaust pipe, the bottom end of the exhaust pipe is fixedly connected to a purification box, the interior of the purification box is filled with activated carbon, one side of the purification box is fixedly connected to a first connecting pipe, a circulating air pump is fixedly connected to the frame, the air inlet of the circulating air pump is fixedly connected to the first connecting pipe, the air outlet of the circulating air pump is fixedly connected to a second connecting pipe, a plurality of air supply heads are fixedly connected to the top end of the grinding machine shell, a heating box is fixedly connected to the top end of the air supply head, an end of the second connecting pipe facing away from the circulating air pump is fixedly connected to the heating box, and a plurality of groups of heating wires are arranged inside the heating box.

[0006] Specifically, a first pulley is fixedly connected to the bottom of the swivel seat, a support plate is fixedly connected to the frame, a first motor is fixedly connected to the support plate, a connecting shaft is rotatably connected to the frame, a second pulley is fixedly connected to the outside of the connecting shaft, the first pulley and the second pulley are driven by a belt, and the output end of the first motor is fixedly connected to the connecting shaft.

[0007] Specifically, the feeding structure includes a feeder housing and a spiral feeding paddle rotatably connected to the inside of the feeder housing. The feeder housing is installed on the open space near the frame, and a feed hopper is fixedly connected to the open space on one side of the feeder housing. The feed hopper and the feeder housing are connected through an inclined feed pipe, and the top of the feeder housing is connected to the grinder housing through an inclined feeding pipe.

[0008] Specifically, a second motor is fixedly connected to the top of the feeder housing, and an output end of the second motor is fixedly connected to the spiral feed paddle.

[0009] Specifically, the screening reflux structure includes a fixed bucket and two discharge ports arranged on the fixed bucket, the fixed bucket is fixedly connected to the fixed seat, the bottom end of the fixed bucket at the discharge port is fixedly connected to two discharge barrels, the discharge barrels penetrate the grinding machine housing and the frame, the bottom end of the discharge barrel is fixedly connected to a collecting hopper, the bottom end of the collecting hopper is fixedly connected to a feeding spoon, the interior of the feeding spoon is installed with a screen through a mounting structure, one side of the feeding spoon is fixedly connected to a reflux pipe, the reflux bucket is fixedly connected to the feeder housing, the bottom end of the screen is overlapped with the reflux pipe, and the bottom end of the reflux pipe is overlapped on the reflux bucket.

[0010] Specifically, a guide plate is fixedly connected to the inside of the feeding spoon, and the guide plate and the screen are arranged in a staggered and inclined manner.

[0011] Specifically, the mounting structure includes a fixed sleeve and a rotating shaft rotatably connected to the inside of the fixed sleeve, a fixed sleeve is fixedly connected to each side of the feeding spoon, a rotating sleeve is fixedly connected to the end of the rotating shaft, the rotating sleeve is rotatably connected to the feeding spoon, two plug rods are slidably connected to the screen, a slot is provided on the rotating sleeve, the plug rod is plugged into the slot, and a first spring is fixedly connected between the two plug rods.

[0012] Specifically, the cross-sections of the insertion rod and the slot are both hexagonal structures, a shifting block is fixedly connected to the insertion rod, and the shifting block is slidably connected to the screen.

[0013] Specifically, the shaking structure includes a driving disk and three protrusions fixedly connected to the driving disk, the driving disk is fixedly connected to the upper part of the connecting shaft, two fixed blocks are fixedly connected to the frame, guide rods are fixedly connected to the fixed blocks, a driving bar is slidably connected to the two guide rods, the driving disk is in contact with the driving bar, a mounting sleeve is fixedly connected to the rotating shaft, the bottom end of the driving bar in an L-shaped structure is in contact with the mounting sleeve, the outer sleeve of the rotating shaft is provided with a torsion spring, one end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring is fixedly connected to the fixed sleeve.

[0014] Specifically, a second spring is sleeved on the outside of the guide rod, and two ends of the second spring are fixedly connected to the driving bar and the fixing block respectively.

[0015] The beneficial effects of the present invention are: (1) The grinding equipment for producing sodium tungstate described in the present invention has a grinding structure on the frame, and a circulating air supply structure on the grinding structure. The toxic gas generated during grinding is treated by the circulating air supply structure, the gas is purified, and hot air is sent into the grinding structure to avoid the sodium tungstate crystals regaining moisture and causing the grinding effect to deteriorate. At the same time, the hot air impacts the sodium tungstate powder, thereby increasing the contact frequency between the sodium tungstate and the grinding structure, thereby improving the grinding effect.

[0016] (2) The grinding equipment for sodium tungstate production described in the present invention has a feeding structure on one side of the frame. The sodium tungstate crystals are ground by the grinding structure, and the grinding noise is low. At the same time, the heat loss is small, which helps to maintain a relatively stable grinding environment in the cavity. Feeding through the feeding structure ensures that the material is fully in contact with the grinding medium, thereby improving the grinding efficiency.

[0017] (3) The grinding equipment for sodium tungstate production described in the present invention has a screening reflux structure on the grinding structure, which measures whether the particle size of the material meets the requirements. The material that does not meet the requirements will be automatically returned to the grinding chamber for further grinding, ensuring that the particle size of the final sodium tungstate product meets the standards.

[0018] (4) The grinding equipment for sodium tungstate production described in the present invention has a mounting structure on the screening reflux structure and a shaking structure on the grinding structure. The mounting structure allows fast replacement of screens of different mesh sizes, thereby improving the efficiency of screen installation and disassembly. The shaking structure allows the screen to be shaken, thereby improving the screening effect. The power of the shaking structure comes from the grinding structure, thereby improving energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a grinding device for producing sodium tungstate provided by the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown; Figure 3 for Figure 1 An enlarged schematic diagram of the structure of part B is shown; Figure 4 It is a schematic diagram of the connection structure between the frame and the grinding structure of the present invention; Figure 5 for Figure 4 An enlarged schematic diagram of the C-section structure is shown; Figure 6 for Figure 4 An enlarged schematic diagram of the D-section structure is shown; Figure 7 It is a schematic diagram of the connection structure between the inner gear ring and the outer gear ring of the present invention; Figure 8 It is a schematic diagram of the connection structure between the screen and the plug rod of the present invention; Fig. 9 for Figure 8 An enlarged schematic diagram of the structure of part E is shown; Fig.10 for Figure 8 The enlarged schematic diagram of the F part structure is shown.

[0021] In the figure: 1. frame; 2. grinding structure; 201. grinding machine shell; 202. grinding sleeve; 203. sound-absorbing and heat-insulating layer; 204. fixed seat; 205. rotating seat; 206. grinding cylinder; 207. grinding ball; 208. first pulley; 209. first motor; 210. connecting shaft; 211. second pulley; 212. supporting plate; 3. circulating air supply structure; 301. inner gear ring; 302. outer gear ring; 303. base; 304. cyclone separator; 305. exhaust pipe; 306. purification box; 307. activated carbon; 308. first connecting pipe; 309. circulating air pump; 310. second connecting pipe; 311. heating box; 312. heating wire; 313. air supply head; 4. screening reflux structure; 401. fixed hopper; 402, discharge port; 403, discharge barrel; 404, collecting hopper; 405, feeding spoon; 406, guide plate; 407, screen; 408, reflux pipe; 409, reflux hopper; 5, mounting structure; 501, fixing sleeve; 502, rotating shaft; 503, rotating sleeve; 504, insert rod; 505, slot; 506, dial block; 507, first spring; 6, shaking structure; 601, driving disk; 602, bump; 603, fixing block; 604, guide rod; 605, driving bar; 606, second spring; 607, mounting sleeve; 608, torsion spring; 7, feeding structure; 701, feeder housing; 702, spiral feeding paddle; 703, feeding hopper; 704, feeding pipe; 705, second motor; 706, feeding pipe. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the grinding equipment for sodium tungstate production of the present invention comprises a frame 1, a grinding structure 2 arranged on the frame 1, a circulating air supply structure 3 arranged on the grinding structure 2, a screening reflux structure 4 arranged on the grinding structure 2, a mounting structure 5 arranged on the screening reflux structure 4, a shaking structure 6 arranged on the grinding structure 2, and a feeding structure 7 arranged on an open space on one side of the grinding structure 2; The grinding structure 2 includes a grinding machine housing 201 and a grinding sleeve 202 fixedly connected to the inside of the grinding machine housing 201. The grinding machine housing 201 is fixedly connected to the frame 1. A fixed seat 204 is fixedly connected to the frame 1. A rotating seat 205 is rotatably connected to the fixed seat 204. A grinding cylinder 206 is fixedly connected to the rotating seat 205. A plurality of groups of grinding balls 207 are rotatably connected to the grinding cylinder 206. The grinding balls 207 are rollingly connected to the grinding sleeve 202. A sound-absorbing and heat-insulating layer 203 is provided inside the grinding sleeve 202. The circulating air supply structure 3 includes an inner gear ring 301 and an outer gear ring 302. The bottom end of the rotating seat 205 is fixedly connected to the inner gear ring 301. The inner gear ring 301 is meshed with the outer gear ring 302. The outer gear ring 302 is fixedly connected to the cyclone separator 304. The fixed seat 204 is fixedly connected to a base 303. The cyclone separator 304 is rotatably connected to the base 303. The bottom end of the base 303 is connected to an exhaust pipe 305. The bottom end of the exhaust pipe 305 is fixedly connected to a purification box 306. The interior of the purification box 306 is filled with activated carbon 307. A first connecting pipe 308 is fixedly connected to one side of the box 306, a circulating air pump 309 is fixedly connected to the frame 1, an air inlet of the circulating air pump 309 is fixedly connected to the first connecting pipe 308, a second connecting pipe 310 is fixedly connected to the air outlet of the circulating air pump 309, a plurality of air supply heads 313 are fixedly connected to the top of the grinder housing 201, a heating box 311 is fixedly connected to the top of the air supply head 313, an end of the second connecting pipe 310 facing away from the circulating air pump 309 is fixedly connected to the heating box 311, and a plurality of groups of heating wires 312 are arranged inside the heating box 311;When the sodium tungstate is ground, the first motor 209 on the support plate 212 is started, the first motor 209 drives the connecting shaft 210 to rotate, the connecting shaft 210 drives the second pulley 211 to rotate, the second pulley 211 drives the first pulley 208 to rotate through the belt, the first pulley 208 drives the rotating seat 205 to rotate on the fixed seat 204, and the sodium tungstate enters the interior of the grinding machine housing 201 from the feeding structure 7, is blown away by the air supply head 313, and the material enters the grinding cylinder. The sodium tungstate is ground by the grinding balls 207 through the gap between the rotating seat 206 and the grinding sleeve 202. The sodium tungstate ground by the multiple grinding balls 207 has smaller particles and finally enters the screening reflux structure 4 from the gap between the rotating seat 205 and the grinding sleeve 202. At the same time, the rotation of the rotating seat 205 drives the inner gear ring 301 to rotate, the inner gear ring 301 drives the outer gear ring 302 to rotate, and the outer gear ring 302 drives the cyclone separator 304 to rotate on the base 303. The cyclone separator 304 is The gas and powder are separated, so that when the circulating air pump 309 is pumping air, the sodium tungstate powder enters the purification box 306 from the exhaust pipe 305, thereby avoiding the loss of sodium tungstate and improving the exhaust effect. The high-temperature toxic gas extracted is adsorbed by the activated carbon 307 inside the purification box 306, thereby avoiding the emission of toxic gas generated by high temperature during grinding and affecting the health of the staff. The purified gas is pumped into the circulating air pump 309 through the first connecting pipe 308, and then discharged through the second connecting pipe 310. The discharged gas is blown to the inside of the heating box 311, and the heating wire 312 inside the heating box 311 is heated. The gas carries the heat of the heating wire 312 and is discharged from the air supply head 313. The air supply head 313 is provided with a plurality of air supply heads in a circular array. The hot air is sent out by the air supply head 313 to blow the sodium tungstate crystals, thereby avoiding the resurgence of the sodium tungstate crystals and affecting the grinding. At the same time, the gas disturbance inside the grinding chamber is increased, and the contact frequency between the sodium tungstate crystal powder and the grinding assembly is increased, thereby achieving a better grinding effect. ;

[0024] Specifically, Figure 1 , Figure 3 and Figure 4 The bottom of the rotating seat 205 is fixedly connected with a first pulley 208, the frame 1 is fixedly connected with a support plate 212, the support plate 212 is fixedly connected with a first motor 209, the frame 1 is rotatably connected with a connecting shaft 210, the outside of the connecting shaft 210 is fixedly connected with a second pulley 211, the first pulley 208 and the second pulley 211 are driven by a belt, and the output end of the first motor 209 is fixedly connected to the connecting shaft 210; The feeding structure 7 includes a feeder housing 701 and a spiral feed paddle 702 rotatably connected to the inside of the feeder housing 701. The feeder housing 701 is installed on the open space near the frame 1. A feed hopper 703 is fixedly connected to the open space on one side of the feeder housing 701. The feed hopper 703 is connected to the feeder housing 701 through an inclined feed pipe 704. The top of the feeder housing 701 is connected to the grinder housing 201 through an inclined feed pipe 706. The top of the feeder housing 701 is fixedly connected to a second motor 705, and the output end of the second motor 705 is fixedly connected to the spiral feed paddle 702. During grinding, due to the grinding sleeve 202 A sound-absorbing and heat-insulating layer 203 is provided inside, which effectively reduces the grinding noise and heat loss, and helps to maintain a relatively stable grinding environment in the cavity. At the same time, when feeding, the material is poured into the inside of the feed hopper 703, and the feed hopper 703 feeds the material into the inside of the feeder housing 701 through the inclined feed pipe 704. The second motor 705 is started to drive the spiral feed paddle 702 to rotate, and the spiral feed paddle 702 rotates to spirally lift the material. Finally, the material is fed into the inside of the grinder housing 201 from the inclined feed pipe 706 for grinding, so that the material transportation is uniform and constant, avoiding the problems of low grinding efficiency and insufficient grinding caused by excessive or insufficient material transportation, and improving the grinding effect.

[0025] Specifically, Figure 1 , Figure 2 , Figure 4 , Figure 5 Figure 6 , Figure 8 , Fig. 9 and Fig.10As shown, the screening reflux structure 4 includes a fixed bucket 401 and two discharge ports 402 arranged on the fixed bucket 401. The fixed seat 204 is fixedly connected with the fixed bucket 401. The bottom end of the fixed bucket 401 at the discharge port 402 is fixedly connected with two discharge barrels 403. The discharge barrels 403 penetrate the grinding machine housing 201 and the frame 1. The bottom end of the discharge barrel 403 is fixedly connected with a collecting bucket 404. The bottom end of the collecting bucket 404 is fixedly connected with a feeding spoon 405. The inside of the feeding spoon 405 is installed with a screen 407 through the mounting structure 5, one side of the feeding spoon 405 is fixedly connected to the return pipe 408, the feeder housing 701 is fixedly connected to the return hopper 409, the bottom end of the screen 407 overlaps the return pipe 408, and the bottom end of the return pipe 408 overlaps the return hopper 409; the inside of the feeding spoon 405 is fixedly connected with a guide plate 406, and the guide plate 406 and the screen 407 are staggered and tilted; the sodium tungstate is ground and turned The centrifugal force of the rotating seat 205 moves outward, and then the material is discharged from the gap between the edge of the rotating seat 205 and the grinding sleeve 202, and finally enters the inside of the discharge barrel 403 through the discharge port 402 on the fixed bucket 401, and then enters the inside of the collecting hopper 404 from the discharge barrel 403, and enters the feeding spoon 405 from the collecting hopper 404. The induced wind generated during the discharge is reduced by the feeding spoon 405, and the material is buffered by the guide plate 406 inside the feeding spoon 405, and finally slowly falls to the screen 407. The sodium tungstate particles that meet the target particle size pass through the screen 407 and directly fall into the collection tank at the bottom. The sodium tungstate particles that do not meet the target particle size roll from the screen 407 to the reflux pipe 408, flow to the reflux bucket 409 through the reflux pipe 408, and finally enter the feeder housing 701 from the reflux bucket 409. The spiral feed paddle 702 rotates and feeds the material, and then flows back to the grinding chamber for secondary or even multiple grindings, until the particle size of the sodium tungstate product meets the standard.

[0026] Specifically, Figure 2 , Figure 3 , Figure 6 , Figure 8 , Fig. 9 and Fig.10As shown, the mounting structure 5 includes a fixed sleeve 501 and a rotating shaft 502 rotatably connected to the inside of the fixed sleeve 501, a fixed sleeve 501 is fixedly connected to each of the two sides of the feeding spoon 405, a rotating sleeve 503 is fixedly connected to the end of the rotating shaft 502, the rotating sleeve 503 is rotatably connected to the feeding spoon 405, two plug rods 504 are slidably connected to the screen 407, a slot 505 is provided on the rotating sleeve 503, the plug rod 504 is plugged into the slot 505, and a first spring 507 is fixedly connected between the two plug rods 504; the cross-sections of the plug rod 504 and the slot 505 are both hexagonal structures, a shift block 506 is fixedly connected to the plug rod 504, and the shift block 506 is slidably connected to the screen 407; The shaking structure 6 includes a driving disk 601 and three protrusions 602 fixedly connected to the driving disk 601. The driving disk 601 is fixedly connected to the upper part of the connecting shaft 210. Two fixing blocks 603 are fixedly connected to the frame 1. The fixing blocks 603 are fixedly connected to guide rods 604. A driving bar 605 is slidably connected to the two guide rods 604. The driving disk 601 is in conflict with the driving bar 605. A mounting sleeve 607 is fixedly connected to the rotating shaft 502. The bottom end of the driving bar 605 in an L-shaped structure is in conflict with the mounting sleeve 607. The outer sleeve of the rotating shaft 502 is provided with a torsion spring 608. The torsion spring 60 One end of the torsion spring 608 is fixedly connected to the rotating shaft 502, and the other end of the torsion spring 608 is fixedly connected to the fixed sleeve 501; the outer sleeve of the guide rod 604 is provided with a second spring 606, and the two ends of the second spring 606 are respectively fixedly connected to the driving bar 605 and the fixing block 603; when it is necessary to replace the screen 407 with a different mesh number or to clean and replace the screen 407, the two shifting blocks 506 can be moved, and the shifting blocks 506 drive the two insertion rods 504 to slide toward each other, the first spring 507 is compressed, and the insertion rod 504 is no longer engaged with the slot 505 on the rotating sleeve 503. At this time, the screen 407 can be pulled out of the feeding spoon 405 for replacement, and then the new screen can be replaced. The mesh 407 is inserted into the feeding spoon 405 so that the insertion rod 504 is aligned with the rotating sleeve 503, and then the two shifting blocks 506 are released, and the first spring 507 is reset to drive the two insertion rods 504 to engage with the slots 505 on the rotating sleeve 503, thus completing the rapid installation and disassembly of the mesh 407. At the same time, when the first motor 209 drives the grinding cylinder 206 to grind sodium tungstate, the first motor 209 drives the connecting shaft 210 to rotate, and the connecting shaft 210 drives the driving disk 601 to rotate, and the driving disk 601 drives the protrusion 602 to rotate. When the protrusion 602 and the driving bar 605 are in the bottom pool, the driving bar 605 is pushed to slide on the guide rod 604, and the second spring 606 is compressed. At the same time, the driving bar 605 resists the rotation of the installation sleeve 607, and the rotation of the installation sleeve 607 drives the rotating shaft 502 to rotate, and the rotation of the rotating shaft 502 drives the rotating sleeve 503 to rotate. At the same time, the torsion spring 608 is compressed, and the rotating sleeve 503 rotates slightly to drive the insertion rod 504 and the screen 407 to rotate, thereby causing the screen 407 to swing upward around the rotating sleeve 503 with a small amplitude. When the protrusion 602 on the driving disk 601 no longer resists the driving bar 605, the second spring 606 resets and drives the driving bar 605 to reset. At the same time, the torsion spring 608 drives the rotating shaft 502 and the rotating sleeve 503 to reset, thereby driving the screen 407 to reset, thereby realizing the up and down swing of the screen 407 and improving the screening effect.

[0027] When the present invention is used, first, when grinding sodium tungstate, the first motor 209 on the support plate 212 is started, the first motor 209 drives the connecting shaft 210 to rotate, the connecting shaft 210 drives the second belt pulley 211 to rotate, the second belt pulley 211 drives the first belt pulley 208 to rotate through the belt, the first belt pulley 208 drives the rotating seat 205 to rotate on the fixed seat 204, and the sodium tungstate enters the interior of the grinding machine housing 201 from the feeding structure 7, and is blown away by the air supply head 313. The material enters the gap between the grinding cylinder 206 and the grinding sleeve 202, and is ground by the grinding balls 207. The sodium tungstate ground by multiple groups of grinding balls 207 has smaller particles, and finally enters the screening reflux structure 4 from the gap between the rotating seat 205 and the grinding sleeve 202. At the same time, the rotation of the rotating seat 205 drives the inner gear ring 301 to rotate, the inner gear ring 301 drives the outer gear ring 302 to rotate, and the outer gear ring 302 drives the cyclone separator 304 to rotate on the base 303, and the cyclone separator The machine 304 separates the gas from the powder, so that when the circulating air pump 309 is pumping air, the sodium tungstate powder enters the purification box 306 from the exhaust pipe 305, thereby avoiding the loss of sodium tungstate and improving the pumping effect. The high-temperature toxic gas extracted is adsorbed by the activated carbon 307 inside the purification box 306, thereby avoiding the emission of toxic gas generated by high temperature during grinding and affecting the health of the staff. The purified gas is pumped into the circulating air pump 309 through the first connecting pipe 308, and then discharged through the second connecting pipe 310. The discharged gas is blown to the inside of the heating box 311, and the heating wire 312 inside the heating box 311 is heated. The gas carries the heat of the heating wire 312 and is discharged from the air supply head 313. The air supply head 313 is provided with a plurality of air supply heads in a circular array. The hot air is sent out by the air supply head 313 to blow the sodium tungstate crystals, thereby avoiding the resurgence of the sodium tungstate crystals and affecting the grinding. At the same time, the gas disturbance inside the grinding chamber is increased, and the contact frequency between the sodium tungstate crystal powder and the grinding assembly is increased, thereby achieving a better grinding effect. Then, during grinding, since the grinding sleeve 202 is provided with a sound-absorbing and heat-insulating layer 203, the grinding noise is effectively reduced, and at the same time, the heat loss is reduced, which is helpful to maintain a relatively stable grinding environment in the cavity. At the same time, during feeding, the material is poured into the inside of the feed hopper 703, and the feed hopper 703 feeds the material into the inside of the feeder housing 701 through the inclined feed pipe 704. The second motor 705 is started to drive the spiral feed paddle 702 to rotate, and the spiral feed paddle 702 rotates to lift the material, and finally the material is fed into the inside of the grinder housing 201 from the inclined feed pipe 706 for grinding, so that the material transportation is uniform and constant, avoiding the problems of low grinding efficiency and insufficient grinding caused by excessive or insufficient material transportation, and improving the grinding effect; Secondly, after being ground, sodium tungstate is thrown outward by the centrifugal force of the rotating seat 205, and then discharged from the gap between the edge of the rotating seat 205 and the grinding sleeve 202, and finally enters the inside of the discharge barrel 403 through the discharge port 402 on the fixed bucket 401, and then enters the inside of the collecting hopper 404 from the discharge barrel 403, and enters the feeding spoon 405 from the collecting hopper 404. The induced wind generated during the discharge is reduced by the feeding spoon 405, and the material is buffered by the guide plate 406 inside the feeding spoon 405, and finally slowly falls to The sodium tungstate particles that meet the target particle size pass through the screen 407 and directly fall into the collection tank at the bottom. The sodium tungstate particles that do not meet the target particle size roll from the screen 407 to the reflux pipe 408, and flow to the reflux bucket 409 through the reflux pipe 408. Finally, they enter the feeder housing 701 from the reflux bucket 409, and are fed by the spiral feed paddle 702, and then flow back to the grinding chamber for secondary or even multiple grinding, until the particle size of the sodium tungstate product meets the standard. Finally, when it is necessary to replace the screen 407 with a different mesh size or to clean and replace the screen 407, the two shifting blocks 506 can be moved, and the shifting blocks 506 drive the two insertion rods 504 to slide toward each other, the first spring 507 is compressed, and the insertion rod 504 is no longer engaged with the slot 505 on the rotating sleeve 503. At this time, the screen 407 can be pulled out from the feeding spoon 405 for replacement, and then the new screen 407 is inserted into the feeding spoon 405 so that the position of the insertion rod 504 is aligned with the rotating sleeve 503, and then the two shifting blocks 506 are released, and the first spring 507 is reset to drive the two insertion rods 504 to engage with the slot 505 on the rotating sleeve 503, that is, the rapid installation and disassembly of the screen 407 is completed. At the same time, when the first motor 209 drives the grinding cylinder 206 to grind sodium tungstate, the first motor 209 drives the connecting shaft 210 to rotate, and the connecting shaft 210 drives the driving disk 60 1 rotates, the driving disk 601 drives the protrusion 602 to rotate, and when the protrusion 602 and the driving strip 605 are in the bottom pool, the driving strip 605 will be pushed to slide on the guide rod 604, the second spring 606 is compressed, and the driving strip 605 resists the installation sleeve 607 to rotate, the installation sleeve 607 rotates to drive the rotating shaft 502 to rotate, the rotating shaft 502 rotates to drive the rotating sleeve 503 to rotate, and the torsion spring 608 is compressed, and the rotating sleeve 503 rotates slightly to drive the insertion rod 504 and the screen 407 to rotate, so that the screen 407 swings upward around the rotating sleeve 503 with a small amplitude, when the protrusion 602 on the driving disk 601 no longer resists the driving strip 605, the second spring 606 resets to drive the driving strip 605 to reset, and the torsion spring 608 resets the rotating shaft 502 and the rotating sleeve 503, and then drives the screen 407 to reset, so that the screen 407 swings up and down, thereby improving the screening effect.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A grinding device for producing sodium tungstate, characterized in that: The invention comprises a frame (1), a grinding structure (2) arranged on the frame (1), a circulating air supply structure (3) arranged on the grinding structure (2), a screening and reflux structure (4) arranged on the grinding structure (2), a mounting structure (5) arranged on the screening and reflux structure (4), a shaking structure (6) arranged on the grinding structure (2), and a feeding structure (7) arranged on an open space on one side of the grinding structure (2); The grinding structure (2) comprises a grinding machine shell (201) and a grinding sleeve (202) fixedly connected to the inside of the grinding machine shell (201); the grinding machine shell (201) is fixedly connected to the frame (1); a fixed seat (204) is fixedly connected to the frame (1); a rotating seat (205) is rotatably connected to the fixed seat (204); a grinding cylinder (206) is fixedly connected to the rotating seat (205); a plurality of groups of grinding balls (207) are rotatably connected to the grinding cylinder (206); the grinding balls (207) are rollingly connected to the grinding sleeve (202); and a sound-absorbing and heat-insulating layer (203) is provided inside the grinding sleeve (202); The circulating air supply structure (3) comprises an inner gear ring (301) and an outer gear ring (302); the inner gear ring (301) is fixedly connected to the bottom end of the rotating seat (205); the inner gear ring (301) is meshed with the outer gear ring (302); the outer gear ring (302) is fixedly connected to the cyclone separator (304); the fixed seat (204) is fixedly connected to a base (303); the base (303) is rotatably connected to the cyclone separator (304); the bottom end of the base (303) is connected to an exhaust pipe (305); the bottom end of the exhaust pipe (305) is fixedly connected to a purification box (306); the interior of the purification box (306) is filled with activated carbon (307); A first connecting pipe (308) is fixedly connected to one side of the purification box (306), a circulating air pump (309) is fixedly connected to the frame (1), an air inlet of the circulating air pump (309) is fixedly connected to the first connecting pipe (308), an air outlet of the circulating air pump (309) is fixedly connected to a second connecting pipe (310), a top end of the grinding machine housing (201) is fixedly connected to a plurality of air supply heads (313), a top end of the air supply head (313) is fixedly connected to a heating box (311), an end of the second connecting pipe (310) facing away from the circulating air pump (309) is fixedly connected to the heating box (311), and a plurality of groups of heating wires (312) are provided inside the heating box (311).

2. The grinding equipment for sodium tungstate production according to claim 1, characterized in that: The bottom of the rotating seat (205) is fixedly connected to a first pulley (208), the frame (1) is fixedly connected to a support plate (212), the support plate (212) is fixedly connected to a first motor (209), the frame (1) is rotatably connected to a connecting shaft (210), the outside of the connecting shaft (210) is fixedly connected to a second pulley (211), the first pulley (208) and the second pulley (211) are driven by a belt, and the output end of the first motor (209) is fixedly connected to the connecting shaft (210).

3. The grinding equipment for sodium tungstate production according to claim 2, characterized in that: The feeding structure (7) comprises a feeder housing (701) and a spiral feeding paddle (702) rotatably connected to the inside of the feeder housing (701); the feeder housing (701) is installed on an open space near the frame (1); a feed hopper (703) is fixedly connected to an open space on one side of the feeder housing (701); the feed hopper (703) and the feeder housing (701) are connected via an inclined feed pipe (704); and the top end of the feeder housing (701) is connected to the grinding machine housing (201) via an inclined feeding pipe (706).

4. The grinding equipment for sodium tungstate production according to claim 3, characterized in that: A second motor (705) is fixedly connected to the top end of the feeder housing (701), and an output end of the second motor (705) is fixedly connected to the screw feed paddle (702).

5. The grinding equipment for sodium tungstate production according to claim 3, characterized in that: The screening reflux structure (4) comprises a fixed bucket (401) and two material discharge ports (402) provided on the fixed bucket (401); the fixed seat (204) is fixedly connected to the fixed bucket (401); the bottom end of the fixed bucket (401) at the material discharge port (402) is fixedly connected to two material discharge barrels (403); the material discharge barrels (403) penetrate the grinding machine housing (201) and the frame (1); the bottom end of the material discharge barrel (403) is fixedly connected to a collecting bucket (404). The bottom end of the collecting hopper (404) is fixedly connected to a feeding spoon (405), a screen (407) is installed inside the feeding spoon (405) via a mounting structure (5), one side of the feeding spoon (405) is fixedly connected to a return pipe (408), a return hopper (409) is fixedly connected to the feeder housing (701), the bottom end of the screen (407) is overlapped with the return pipe (408), and the bottom end of the return pipe (408) is overlapped with the return hopper (409).

6. The grinding equipment for sodium tungstate production according to claim 5, characterized in that: A guide plate (406) is fixedly connected to the interior of the feeding spoon (405), and the guide plate (406) and the screen (407) are arranged in a staggered and inclined manner.

7. The grinding equipment for producing sodium tungstate according to claim 5, characterized in that: The mounting structure (5) comprises a fixed sleeve (501) and a rotating shaft (502) rotatably connected to the inside of the fixed sleeve (501); a fixed sleeve (501) is fixedly connected to each side of the feeding spoon (405); a rotating sleeve (503) is fixedly connected to the end of the rotating shaft (502); the rotating sleeve (503) is rotatably connected to the feeding spoon (405); two insertion rods (504) are slidably connected to the screen (407); a slot (505) is provided on the rotating sleeve (503); the insertion rod (504) is plugged into the slot (505); and a first spring (507) is fixedly connected between the two insertion rods (504).

8. The grinding equipment for sodium tungstate production according to claim 7, characterized in that: The cross-sections of the insertion rod (504) and the slot (505) are both hexagonal structures, and a shifting block (506) is fixedly connected to the insertion rod (504), and the shifting block (506) is slidably connected to the screen (407).

9. The grinding equipment for producing sodium tungstate according to claim 7, characterized in that: The shaking structure (6) comprises a driving disk (601) and three protrusions (602) fixedly connected to the driving disk (601); the driving disk (601) is fixedly connected to the upper portion of the connecting shaft (210); two fixing blocks (603) are fixedly connected to the frame (1); guide rods (604) are fixedly connected to the fixing blocks (603); a driving bar (605) is slidably connected to the two guide rods (604); the driving disk (601) abuts against the driving bar (605); a mounting sleeve (607) is fixedly connected to the rotating shaft (502); the bottom end of the driving bar (605) in an L-shaped structure abuts against the mounting sleeve (607); a torsion spring (608) is provided on the outer sleeve of the rotating shaft (502); one end of the torsion spring (608) is fixedly connected to the rotating shaft (502); and the other end of the torsion spring (608) is fixedly connected to the fixing sleeve (501).

10. The grinding equipment for producing sodium tungstate according to claim 9, characterized in that: A second spring (606) is sleeved on the outside of the guide rod (604), and two ends of the second spring (606) are respectively fixedly connected to the driving bar (605) and the fixing block (603).

Images