Crushing device with multi-stage screening and filtering functions for chemical product production

Abstract

The invention discloses a crushing device with multi-stage screening and filtering functions for chemical product production, and relates to the technical field of crushing devices.The device comprises a cracking cabin, a discharging pipe, a first machine box, a second machine box, a feeding assembly, a driving assembly, a discharging assembly, a plurality of inner crushing roller sets and a plurality of outer crushing roller sets; the first machine box and the second machine box are symmetrically installed on the two sides of the cracking cabin, the feeding assembly penetrates through the first machine box to be connected with the interior of the cracking cabin, the driving assembly is connected with the second machine box, and the discharging assembly is installed at the bottom of the cracking cabin. The multiple inner crushing roller sets and the multiple outer crushing roller sets are installed between the first machine box and the second machine box, the multiple inner crushing roller sets and the multiple outer crushing roller sets are located in the cracking cabin, the first machine box and the second machine box are controlled to rotate slowly, the chemical in the cracking cabin plays a whole turning role, and meanwhile screening of the chemical is accelerated.

Description

Technical Field

[0001] The invention relates to the technical field of crushing devices, in particular to a crushing device with multi-stage screening and filtering functions for the production of chemical products. Background Art

[0002] In the field of chemical production, it is often necessary to use crushing equipment to crush large lumps of chemicals. These crushing processing equipment often include two parts: crushing and screening. The crushing stage is to use rollers to violently crush the chemicals, and the screening stage is to screen the initially crushed chemicals, and the chemicals that meet the filter particle size will be screened out. The chemicals that cannot pass through the sieve aperture need to be returned for crushing. Although the efficiency of this traditional crushing processing equipment is relatively high, the entire equipment occupies a relatively large space, and the separation of screening and crushing is not conducive to the sealing of the entire equipment. Especially when dealing with dangerous and harmful chemicals, the sealing of the equipment is directly related to the life safety of on-site operators. Therefore, there is a lack of a small-volume crushing equipment that integrates crushing and screening. Summary of the invention

[0003] The object of the present invention is to provide a pulverizing device with multi-stage screening and filtering functions for the production of chemical products to solve the problems raised in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pulverizing device with multi-stage screening and filtering functions for the production of chemical products, comprising a cracking cabin, a feeding pipe, a No. 1 chassis, a No. 2 chassis, a feeding assembly, a driving assembly, a feeding assembly, several inner crushing roller groups and several outer crushing roller groups, the cracking cabin, the feeding assembly, the driving assembly and the feeding assembly are all installed on an equipment bracket, the No. 1 chassis and the No. 2 chassis are symmetrically installed on both sides of the cracking cabin, several reinforcing ribs are connected between the No. 1 chassis and the No. 2 chassis, the feeding assembly passes through the No. 1 chassis and is connected to the inside of the cracking cabin, the driving assembly is connected to the No. 2 chassis, the feeding assembly is installed at the bottom of the cracking cabin, several inner crushing roller groups and several outer crushing roller groups are installed between the No. 1 chassis and the No. 2 chassis, and several inner crushing roller groups and several outer crushing roller groups are located inside the cracking cabin.

[0005] Furthermore, the driving assembly includes a driving motor and an external spline shaft. A rotating shaft is sealed in the middle of the No. 2 chassis. An internal spline hole is opened in the middle of the end of the rotating shaft away from the cracking cabin. The external spline shaft is installed on the driving motor, and the external spline shaft cooperates with the internal spline hole. When the device is working, the driving motor drives the external spline shaft to rotate, and the external spline shaft drives the rotating shaft to rotate through the internal spline hole, thereby driving the No. 1 chassis and the No. 2 chassis to rotate.

[0006] Furthermore, the feeding assembly includes a feeding hopper, a feeding pipe, a servo motor and a variable diameter screw. The feeding pipe is L-shaped, and the feeding hopper is installed on the top of the feeding pipe. One end of the feeding pipe passes through the No. 1 chassis, and the feeding pipe is rotatably sealed and connected to the No. 1 chassis. The variable diameter screw is rotatably installed in the feeding pipe, and the rotating shaft of the variable diameter screw passes through the feeding pipe. The servo motor is connected to the rotating shaft of the variable diameter screw. The chemicals to be crushed are transported to the feeding hopper through a conveyor, and the chemicals enter the feeding pipe along the feeding hopper. The servo motor drives the variable diameter screw to rotate, and the variable diameter screw slowly pushes the chemicals in the feeding pipe into the cracking chamber. Since the spiral blades of the variable diameter screw change from small to large, the variable diameter screw first performs a preliminary extrusion and crushing effect on the block chemicals, and then the chemicals are gradually crushed by the inner crushing roller group and the outer crushing roller group, and are broken into small pieces, and finally fall downward from the discharge pipe.

[0007] Furthermore, a discharge pipe is connected through the bottom of the cracking cabin, and the discharge assembly includes a discharge sleeve shell and a double-headed motor. The discharge sleeve shell is connected to the outside of the discharge pipe, and the double-headed motor is installed inside the discharge sleeve shell through a bracket. A material receiving bag is provided at the bottom of the discharge sleeve shell, and a plurality of through holes are evenly distributed in a ring shape on the top of the discharge sleeve shell. Small pieces of chemicals fall onto the rotating grinding disc, and the double-headed motor drives the rotating grinding disc to rotate. The chemicals are ground from block to powder through the grinding of the chemicals by the fixed grinding disc and the rotating grinding disc.

[0008] Furthermore, the unloading assembly also includes a fixed grinding disc, a rotating grinding disc and a fin fan. The fixed grinding disc is a hollow ring structure, which is installed at the bottom of the unloading pipe. The rotating grinding disc is installed on the motor shaft of the double-headed motor near one end of the cracking cabin. The fin fan is installed on the motor shaft of the double-headed motor near one end of the receiving bag. The rotating grinding disc is in contact with the fixed grinding disc, and the double-headed motor drives the fixed grinding disc to rotate while also driving the fin fan to rotate. Air is taken in by several through holes on the top of the unloading sleeve shell, and the airflow blows toward the receiving bag, so that the ground powdered chemicals are blown into the receiving bag for collection.

[0009] Furthermore, several of the inner crushing roller groups and several of the outer crushing roller groups are evenly distributed in a ring shape, several of the outer crushing roller groups are jacketed on the outsides of the several inner crushing roller groups, an inner filter is arranged between every two adjacent inner crushing roller groups, and an outer filter is arranged between every two adjacent outer crushing roller groups, all of the inner and outer filters are in the shape of arc plates, and all of the inner and outer filters are installed between the No. 1 chassis and the No. 2 chassis. Since the No. 1 chassis and the No. 2 chassis rotate slowly, they have an overall flipping effect on the chemicals inside the cracking cabin, and at the same time accelerate the screening of the chemicals. If the chemicals If the particle size of the chemical is smaller than the pore diameter of the inner filter, it will directly fall onto the outer filter. If the particle size of the chemical is larger than the pore diameter of the inner filter, it will be broken down into finer particles by the two coarse rollers of the inner crushing roller group. If the particle size of the chemical is smaller than the pore diameter of the outer filter, the chemical will directly pass through the outer filter and enter the discharge pipe. If the particle size of the chemical is larger than the pore diameter of the outer filter, it will be broken down into finer particles by the two fine rollers of the outer crushing roller group. The chemicals are crushed step by step by the two layers of rollers of the inner crushing roller group and the outer crushing roller group, so that the chemicals can be crushed from large pieces to small pieces.

[0010] Furthermore, each of the inner crushing roller groups includes two coarse rollers, each of which is provided with crushing teeth, small-diameter gears are installed at both ends of one of the coarse rollers, and recessed gears are installed at both ends of the other coarse roller; the outer crushing roller group includes two fine rollers, each of which is provided with crushing teeth, small-diameter gears are installed at both ends of one of the fine rollers, and recessed gears are installed at both ends of the other fine roller; all of the small-diameter gears and recessed gears are distributed and installed in the No. 1 chassis and the No. 2 chassis, the middle part of the recessed gear profile is concave, the thickness of the inner ring No. 1 gear ring at the meshing position with the small-diameter gear in the inner crushing roller group is less than the thickness of the recessed gear part, so the inner ring No. 1 gear ring will only drive the small-diameter gear to rotate, and will not interfere with the rotation of the recessed gear; the diameter of the recessed gear is larger than the small-diameter gear, the inner ring No. 2 gear ring drives all the recessed gears to rotate, and will not interfere with the rotation of the small-diameter gear; The transmission mode of the outer ring No. 1 gear ring and the outer ring No. 2 gear ring to the external crushing roller group is the same as that of the inner ring No. 1 gear ring and the inner ring No. 2 gear ring.

[0011] Furthermore, the interior of the No. 1 machine case is provided with an inner ring gear No. 1, an inner ring gear No. 2, an outer ring gear No. 1 and an outer ring gear No. 2, the inner ring gear No. 1 is meshed with the small-diameter gear in the inner crushing roller group, the inner ring gear No. 2 is meshed with the recessed gear in the inner crushing roller group; the outer ring gear No. 1 is meshed with the small-diameter gear in the outer crushing roller group, the outer ring gear No. 2 is meshed with the recessed gear in the outer crushing roller group.

[0012] Furthermore, the inner ring gear ring No. 1, the inner ring gear ring No. 2, the outer ring gear ring No. 1 and the outer ring gear ring No. 2 are all provided with conical tooth grooves on the side away from the cracking cabin, and a pair of bevel gear sets are symmetrically installed inside the No. 1 chassis, and each of the bevel gear sets is provided with four bevel gears, and the diameters of the four bevel gears decrease from the outside to the inside, and the four bevel gears are meshed with the conical tooth grooves on the outer ring gear ring No. 2, the outer ring gear ring No. 1, the inner ring gear ring No. 2 and the inner ring gear ring No. 1 in sequence; one end of the pair of bevel gear sets passes through the No. 1 chassis, and one end of the bevel gear set is connected to a small motor, and the small motor is installed on the outside of the No. 1 chassis, and the small motor drives the bevel gear set to rotate, and the bevel gear set simultaneously drives the inner ring gear ring No. 1, the inner ring gear ring No. 2, the outer ring gear ring No. 1 and the outer ring gear ring No. 2 to rotate, Since the diameters of the four bevel gears decrease in sequence, the small motor drives the bevel gear group to rotate one circle, and the linear speeds of the four bevel gears are also different. The diameter of the inner ring No. 1 gear ring is the smallest, so the diameter of the bevel gear driving the inner ring No. 1 gear ring is the largest, and the diameter of the outer ring No. 2 gear ring is the largest, so the diameter of the bevel gear driving the outer ring No. 2 gear ring is the smallest, so as to ensure that the rotation speeds of the inner ring No. 1 gear ring, the inner ring No. 2 gear ring, the outer ring No. 1 gear ring and the outer ring No. 2 gear ring are the same, a pair of coarse rollers in each group of inner crushing roller groups turn in opposite directions but have the same rotation speed, and a pair of fine rollers in each group of outer crushing roller groups turn in opposite directions but have the same rotation speed. Through the settings of the bevel gear group and the gear ring group, more roller groups are driven by fewer driving sources to crush chemicals, thereby achieving energy saving, efficiency improvement, simple structure and high reliability of work.

[0013] Furthermore, the internal structure and configuration of the second chassis are the same as those of the first chassis.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By controlling the No. 1 and No. 2 chassis to rotate slowly, the chemicals inside the cracking chamber are turned over as a whole, and the screening of the chemicals is accelerated. A pair of coarse rollers in each inner crushing roller group turn in opposite directions but have the same rotation speed, and a pair of fine rollers in each outer crushing roller group turn in opposite directions but have the same rotation speed. Through the setting of the bevel gear group and the gear ring group, fewer drive sources are used to drive more roller groups to crush the chemicals, thereby achieving energy saving, efficiency improvement, simple structure and high reliability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The overall appearance structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall appearance structure of the present invention is shown in FIG. Figure 2 ; Figure 3 The internal structure of the present invention is shown in FIG. Figure 1 ; Figure 4 The internal structure of the present invention is shown in FIG. Figure 2 ; Figure 5 The internal structure of the present invention is shown in FIG. Figure 3 ; Figure 6 The internal structure of the present invention is shown in FIG. Figure 4 ; Figure 7 It is a structural schematic diagram of the crushing roller group in the present invention; Figure 8 This is a schematic diagram of the internal structure of chassis No. 1 of the present invention.

[0016] In the figure: 1. Cracking cabin; 2. Feeding pipe; 3. Fixed grinding disc; 4. Rotating grinding disc; 5. Double-headed motor; 6. Fin fan; 7. Chassis No. 1; 8. Chassis No. 2; 9. Driving motor; 10. External spline shaft; 11. Feed hopper; 12. Feeding pipe; 13. Servo motor; 14. Variable diameter screw; 15. Small motor; 16. Bevel gear set; 17. Inner crushing roller set; 18. Outer crushing roller set; 19. Inner filter; 20. Outer filter; 21. Coarse roller; 22. Fine roller; 23. Small diameter gear; 24. Inner recessed gear; 25. Inner ring No. 1 gear ring; 26. Inner ring No. 2 gear ring; 27. Outer ring No. 1 gear ring; 28. Outer ring No. 2 gear ring; 29. ​​Reinforcement rib; 30. Feeding sleeve shell. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example: Figure 1-Figure 8As shown, the present invention provides a technical solution, a pulverizing device with multi-stage screening and filtering functions for the production of chemical products, including a cracking cabin 1, a feeding pipe 2, a No. 1 chassis 7, a No. 2 chassis 8, a feeding assembly, a driving assembly, a feeding assembly, a plurality of inner crushing roller groups 17 and a plurality of outer crushing roller groups 18, the cracking cabin 1, the feeding assembly, the driving assembly and the feeding assembly are all installed on the equipment bracket, the No. 1 chassis 7 and the No. 2 chassis 8 are symmetrically installed on both sides of the cracking cabin 1, a plurality of reinforcing ribs 29 are connected between the No. 1 chassis 7 and the No. 2 chassis 8, the feeding assembly passes through the No. 1 chassis 7 and is connected to the inside of the cracking cabin 1, the driving assembly is connected to the No. 2 chassis 8, and the feeding assembly is installed on the cracking At the bottom of the cabin 1, several inner crushing roller groups 17 and several outer crushing roller groups 18 are installed between the No. 1 chassis 7 and the No. 2 chassis 8, and several inner crushing roller groups 17 and several outer crushing roller groups 18 are located inside the cracking cabin 1. The driving assembly includes a driving motor 9 and an external spline shaft 10. A rotating shaft is sealed in the middle of the No. 2 chassis 8, and an internal spline hole is opened in the middle of the end of the rotating shaft away from the cracking cabin 1. The external spline shaft 10 is installed on the driving motor 9, and the external spline shaft 10 cooperates with the internal spline hole. When the device is working, the driving motor 9 drives the external spline shaft 10 to rotate, and the external spline shaft 10 drives the rotating shaft to rotate through the internal spline hole, thereby driving the No. 1 chassis 7 and the No. 2 chassis 8 to rotate.

[0019] The feeding assembly includes a feeding hopper 11, a feeding pipe 12, a servo motor 13 and a reducing screw 14. The feeding pipe 12 is L-shaped. The feeding hopper 11 is installed on the top of the feeding pipe 12. One end of the feeding pipe 12 passes through the first chassis 7. The feeding pipe 12 is rotatably sealed and connected to the first chassis 7. The reducing screw 14 is rotatably installed in the feeding pipe 12. The rotating shaft of the reducing screw 14 passes through the feeding pipe 12. The servo motor 13 is connected to the rotating shaft of the reducing screw 14. The chemicals to be crushed are transported to the feeding hopper through a conveyor. At the hopper 11, the chemicals enter the feed pipe 12 along the feed hopper 11, and the servo motor 13 drives the variable diameter screw 14 to rotate. The variable diameter screw 14 slowly pushes the chemicals in the feed pipe 12 into the cracking chamber 1. Since the spiral blades of the variable diameter screw 14 change from small to large, the variable diameter screw 14 first performs a preliminary extrusion and crushing effect on the block-shaped chemicals. Subsequently, the chemicals are gradually crushed by the inner crushing roller group 17 and the outer crushing roller group 18, and are broken into small pieces, and finally fall downward from the discharge pipe 2.

[0020] The bottom of the cracking cabin 1 is connected with a feeding pipe 2, and the feeding assembly includes a feeding sleeve shell 30 and a double-headed motor 5. The feeding sleeve shell 30 is connected to the outside of the feeding pipe 2, and the double-headed motor 5 is installed in the inside of the feeding sleeve shell 30 through a bracket. A material receiving bag (not shown in the figure) is arranged at the bottom of the feeding sleeve shell 30, and a plurality of through holes are evenly distributed in an annular shape on the top of the feeding sleeve shell 30. The feeding assembly also includes a fixed grinding disc 3, a rotating grinding disc 4 and a fin fan 6. The fixed grinding disc 3 is a hollow annular structure, and the fixed grinding disc 3 is installed at the bottom of the feeding pipe 2, and the rotating grinding disc 4 is installed at the double-headed motor 5 near the breaking The fin fan 6 is installed on the motor shaft at one end of the debonding chamber 1, and the fin fan 6 is installed on the motor shaft of the double-headed motor 5 near the end of the material receiving bag. The rotating grinding disc 4 is in contact with the fixed grinding disc 3, and small pieces of chemicals fall onto the rotating grinding disc 4. The double-headed motor 5 drives the rotating grinding disc 4 to rotate. Through the grinding of the chemicals by the fixed grinding disc 3 and the rotating grinding disc 4, the chemicals are ground from blocks to powder. While the double-headed motor 5 drives the fixed grinding disc 3 to rotate, it also drives the fin fan 6 to rotate. Several through holes on the top of the material discharge sleeve shell 30 let in air, and the airflow blows toward the material receiving bag, so that the ground powdered chemicals are blown into the inside of the material receiving bag for collection.

[0021] Several inner crushing roller groups 17 and several outer crushing roller groups 18 are evenly distributed in a ring shape, and several outer crushing roller groups 18 are jacketed on the outside of several inner crushing roller groups 17. An inner filter 19 is arranged between every two adjacent inner crushing roller groups 17, and an outer filter 20 is arranged between every two adjacent outer crushing roller groups 18. All inner filters 19 and outer filters 20 are in the shape of arc plates. All inner filters 19 and outer filters 20 are installed between the first chassis 7 and the second chassis 8. Since the first chassis 7 and the second chassis 8 are rotating slowly, the chemicals inside the cracking cabin 1 are turned over as a whole, and the screening of the chemicals is accelerated. If the chemicals If the particle size is smaller than the pore diameter of the inner filter 19, it will directly fall onto the outer filter 20. If the particle size of the chemical is larger than the pore diameter of the inner filter 19, it will be broken down into finer particles by the two coarse rollers 21 of the inner crushing roller group 17. If the particle size of the chemical is smaller than the pore diameter of the outer filter 20, the chemical will directly pass through the outer filter 20 and enter the discharge pipe 2. If the particle size of the chemical is larger than the pore diameter of the outer filter 20, it will be broken down into finer particles by the two fine rollers 22 of the outer crushing roller group 18. The chemicals are crushed step by step by the two layers of roller groups, namely the inner crushing roller group 17 and the outer crushing roller group 18, so as to realize the crushing of chemicals from large pieces to small pieces.

[0022] Each inner crushing roller group 17 includes two coarse rollers 21, each of which is provided with crushing teeth, a small-diameter gear 23 is installed at both ends of one coarse roller 21, and an indented gear 24 is installed at both ends of the other coarse roller 21; the outer crushing roller group 18 includes two fine rollers 22, each of which is provided with crushing teeth, a small-diameter gear 23 is installed at both ends of one fine roller 22, and an indented gear 24 is installed at both ends of the other fine roller 22; all the small-diameter gears 23 and the indented gears 24 are distributed and installed in the first chassis 7 and the second chassis 8, and the middle part of the contour of the indented gear 24 is concave. The thickness of the meshing position of the inner ring gear 25 and the small diameter gear 23 in the inner crushing roller group 17 is less than the thickness of the inner recessed gear 24, so the inner ring gear 25 will only drive the small diameter gear 23 to rotate, and will not interfere with the rotation of the inner recessed gear 24; the diameter of the inner recessed gear 24 is larger than the small diameter gear 23, the inner ring gear 26 drives all the inner recessed gears 24 to rotate, and will not interfere with the rotation of the small diameter gear 23; the transmission method of the outer ring gear 17 and the outer ring gear 28 to the external crushing roller group 18 is the same as that of the inner ring gear 15 and the inner ring gear 26.

[0023] The interior of the No. 1 housing 7 is provided with an inner ring No. 1 gear ring 25, an inner ring No. 2 gear ring 26, an outer ring No. 1 gear ring 27 and an outer ring No. 2 gear ring 28. The inner ring No. 1 gear ring 25 is meshed with the small-diameter gear 23 in the inner crushing roller group 17, and the inner ring No. 2 gear ring 26 is meshed with the recessed gear 24 in the inner crushing roller group 17; the outer ring No. 1 gear ring 27 is meshed with the small-diameter gear 23 in the outer crushing roller group 18, and the outer ring No. 2 gear ring 28 is meshed with the recessed gear 24 in the outer crushing roller group 18. The inner ring No. 1 gear ring 25, the inner ring No. 2 gear ring 26, the outer ring No. 1 gear ring 27 and the outer ring No. 2 gear ring 28 are all provided on the side away from the cracking chamber 1. Conical tooth grooves, a pair of bevel gear sets 16 are symmetrically installed inside the No. 1 chassis 7, and four bevel gears are arranged on each bevel gear set 16. The diameters of the four bevel gears decrease from the outside to the inside, and the four bevel gears are meshed with the conical tooth grooves on the outer ring No. 2 gear ring 28, the outer ring No. 1 gear ring 27, the inner ring No. 2 gear ring 26 and the inner ring No. 1 gear ring 25 in sequence; one end of a pair of bevel gear sets 16 passes through the No. 1 chassis 7, and one end of the bevel gear set 16 is connected to a small motor 15, which is installed on the outside of the No. 1 chassis 7. The internal structure and setting method of the No. 2 chassis 8 are the same as the internal structure and setting method of the No. 1 chassis 7.

[0024] The small motor 15 drives the bevel gear set 16 to rotate, and the bevel gear set 16 drives the inner ring No. 1 gear ring 25, the inner ring No. 2 gear ring 26, the outer ring No. 1 gear ring 27 and the outer ring No. 2 gear ring 28 to rotate. Since the diameters of the four bevel gears decrease in sequence, the small motor 15 drives the bevel gear set 16 to rotate one circle, and the linear speeds of the four bevel gears are also different. The diameter of the inner ring No. 1 gear ring 25 is the smallest, so the diameter of the bevel gear driving the inner ring No. 1 gear ring 25 is the largest, and the diameter of the outer ring No. 2 gear ring 28 is the largest, so the bevel gear driving the outer ring No. 2 gear ring 28 is The gear diameter is minimal, thereby ensuring that the inner ring No. 1 gear ring 25, the inner ring No. 2 gear ring 26, the outer ring No. 1 gear ring 27 and the outer ring No. 2 gear ring 28 rotate at the same speed, the pair of coarse rollers 21 in each group of inner crushing roller groups 17 rotate in opposite directions but have the same rotation speed, and the pair of fine rollers 22 in each group of outer crushing roller groups 18 rotate in opposite directions but have the same rotation speed. Through the arrangement of the bevel gear group 16 and the gear ring group, more roller groups are driven by fewer driving sources to crush chemicals, thereby achieving energy saving, efficiency improvement, simple structure and high reliability of operation.

[0025] The working principle of the present invention is as follows: when the device is working, the driving motor 9 drives the outer spline shaft 10 to rotate, and the outer spline shaft 10 drives the rotating shaft to rotate through the inner spline hole, and then drives the first chassis 7 and the second chassis 8 to rotate.

[0026] The chemicals to be crushed are transported to the feed hopper 11 through a conveyor, and the chemicals enter the feed pipe 12 along the feed hopper 11. The servo motor 13 drives the variable diameter screw 14 to rotate, and the variable diameter screw 14 slowly pushes the chemicals in the feed pipe 12 into the cracking chamber 1. Since the spiral blades of the variable diameter screw 14 change from small to large, the variable diameter screw 14 first performs a preliminary extrusion and crushing effect on the block-shaped chemicals. Subsequently, the chemicals are gradually crushed by the inner crushing roller group 17 and the outer crushing roller group 18, and are broken into small pieces, and finally fall downward from the discharge pipe 2.

[0027] Small pieces of chemicals fall onto the rotating grinding disc 4, and the double-headed motor 5 drives the rotating grinding disc 4 to rotate. Through the grinding of the chemicals by the fixed grinding disc 3 and the rotating grinding disc 4, the chemicals are ground from blocks into powder. The double-headed motor 5 drives the fixed grinding disc 3 to rotate and also drives the fin fan 6 to rotate. Air is taken in by several through holes on the top of the discharge sleeve shell 30, and the air flow blows toward the receiving bag, so that the ground powdered chemicals are blown into the receiving bag for collection.

[0028] Since the No. 1 chassis 7 and the No. 2 chassis 8 are rotating slowly, the chemicals inside the cracking chamber 1 are turned over as a whole, and the screening of the chemicals is accelerated. If the particle size of the chemicals is smaller than the filter hole diameter of the inner filter 19, they will directly fall onto the outer filter 20. If the particle size of the chemicals is larger than the filter hole diameter of the inner filter 19, they will be broken down into finer particles by the two coarse rollers 21 of the inner crushing roller group 17. If the particle size of the chemicals is smaller than the filter hole diameter of the outer filter 20, the chemicals will directly pass through the outer filter 20 and enter the discharge pipe 2. If the particle size of the chemicals is larger than the filter hole diameter of the outer filter 20, they will be broken down into finer particles by the two fine rollers 22 of the outer crushing roller group 18. The chemicals are crushed step by step by the two layers of roller groups, namely the inner crushing roller group 17 and the outer crushing roller group 18, so as to realize the crushing of chemicals from large pieces to small pieces.

[0029] The middle part of the contour of the recessed gear 24 is concave, and the thickness of the meshing position of the inner ring gear 25 and the small-diameter gear 23 in the inner crushing roller group 17 is smaller than the thickness of the recessed part of the recessed gear 24. Therefore, the inner ring gear 25 will only drive the small-diameter gear 23 to rotate, and will not interfere with the rotation of the recessed gear 24; the diameter of the recessed gear 24 is larger than the small-diameter gear 23, and the inner ring gear 26 drives all the recessed gears 24 to rotate, and will not interfere with the rotation of the small-diameter gear 23; the transmission method of the outer ring gear 1 27 and the outer ring gear 28 to the external crushing roller group 18 is the same as that of the inner ring gear 1 25 and the inner ring gear 26.

[0030] The small motor 15 drives the bevel gear set 16 to rotate, and the bevel gear set 16 drives the inner ring No. 1 gear ring 25, the inner ring No. 2 gear ring 26, the outer ring No. 1 gear ring 27 and the outer ring No. 2 gear ring 28 to rotate. Since the diameters of the four bevel gears decrease in sequence, the small motor 15 drives the bevel gear set 16 to rotate one circle, and the linear speeds of the four bevel gears are also different. The diameter of the inner ring No. 1 gear ring 25 is the smallest, so the diameter of the bevel gear driving the inner ring No. 1 gear ring 25 is the largest, and the diameter of the outer ring No. 2 gear ring 28 is the largest, so the bevel gear driving the outer ring No. 2 gear ring 28 is The gear diameter is minimal, thereby ensuring that the inner ring No. 1 gear ring 25, the inner ring No. 2 gear ring 26, the outer ring No. 1 gear ring 27 and the outer ring No. 2 gear ring 28 rotate at the same speed, the pair of coarse rollers 21 in each group of inner crushing roller groups 17 rotate in opposite directions but have the same rotation speed, and the pair of fine rollers 22 in each group of outer crushing roller groups 18 rotate in opposite directions but have the same rotation speed. Through the arrangement of the bevel gear group 16 and the gear ring group, more roller groups are driven by fewer driving sources to crush chemicals, thereby achieving energy saving, efficiency improvement, simple structure and high reliability of operation.

[0031] 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.

Claims

1. A pulverizing device with multi-stage screening and filtering functions for the production of chemical products, characterized in that: The invention comprises a cracking chamber (1), a feeding pipe (2), a first chassis (7), a second chassis (8), a feeding assembly, a driving assembly, a feeding assembly, a plurality of inner crushing roller groups (17) and a plurality of outer crushing roller groups (18), wherein the cracking chamber (1), the feeding assembly, the driving assembly and the feeding assembly are all mounted on an equipment bracket, the first chassis (7) and the second chassis (8) are symmetrically mounted on both sides of the cracking chamber (1), and the first chassis (7) and the second chassis (8) are connected to each other. There are several reinforcing ribs (29), the feeding assembly passes through the first chassis (7) and is connected to the inside of the cracking chamber (1), the driving assembly is connected to the second chassis (8), the unloading assembly is installed at the bottom of the cracking chamber (1), several inner crushing roller groups (17) and several outer crushing roller groups (18) are installed between the first chassis (7) and the second chassis (8), and several inner crushing roller groups (17) and several outer crushing roller groups (18) are located inside the cracking chamber (1).

2. A pulverizing device with multi-stage screening and filtering function for chemical product production according to claim 1, characterized in that: The driving assembly comprises a driving motor (9) and an external spline shaft (10); a rotating shaft is sealed in the middle of the second housing (8); an internal spline hole is provided in the middle of one end of the rotating shaft away from the cracking chamber (1); the external spline shaft (10) is mounted on the driving motor (9), and the external spline shaft (10) matches the internal spline hole.

3. The pulverizing device with multi-stage screening and filtering function for chemical product production according to claim 1, characterized in that: The feeding assembly comprises a feeding hopper (11), a feeding pipe (12), a servo motor (13) and a variable diameter screw (14); the feeding pipe (12) is L-shaped; the feeding hopper (11) is mounted on the top of the feeding pipe (12); one end of the feeding pipe (12) passes through a first chassis (7); the feeding pipe (12) is rotatably sealed to the first chassis (7); the variable diameter screw (14) is rotatably mounted in the feeding pipe (12); a rotating shaft of the variable diameter screw (14) passes through the feeding pipe (12); and the servo motor (13) is connected to the rotating shaft of the variable diameter screw (14).

4. The pulverizing device with multi-stage screening and filtering function for chemical product production according to claim 1, characterized in that: The bottom of the cracking chamber (1) is connected to a feeding pipe (2), and the feeding assembly comprises a feeding sleeve shell (30) and a double-headed motor (5). The feeding sleeve shell (30) is connected to the outside of the feeding pipe (2), and the double-headed motor (5) is installed inside the feeding sleeve shell (30) through a bracket. A material receiving bag is provided at the bottom of the feeding sleeve shell (30), and a plurality of through holes are evenly distributed in a ring shape on the top of the feeding sleeve shell (30).

5. A pulverizing device with multi-stage screening and filtering function for chemical product production according to claim 4, characterized in that: The material discharge assembly also includes a fixed grinding disc (3), a rotating grinding disc (4) and a fin fan (6). The fixed grinding disc (3) is a hollow annular structure. The fixed grinding disc (3) is installed at the bottom of the material discharge pipe (2). The rotating grinding disc (4) is installed on the motor shaft of the double-headed motor (5) near the end of the cracking chamber (1). The fin fan (6) is installed on the motor shaft of the double-headed motor (5) near the end of the material receiving bag. The rotating grinding disc (4) is in contact with the fixed grinding disc (3).

6. The pulverizing device with multi-stage screening and filtering function for chemical product production according to claim 1, characterized in that: The plurality of inner crushing roller groups (17) and the plurality of outer crushing roller groups (18) are evenly distributed in a ring shape, the plurality of outer crushing roller groups (18) are jacketed on the outside of the plurality of inner crushing roller groups (17), an inner filter screen (19) is arranged between every two adjacent inner crushing roller groups (17), and an outer filter screen (20) is arranged between every two adjacent outer crushing roller groups (18), all the inner filter screens (19) and the outer filter screens (20) are in the shape of arc plates, and all the inner filter screens (19) and the outer filter screens (20) are installed between the first chassis (7) and the second chassis (8).

7. The pulverizing device with multi-stage screening and filtering function for chemical product production according to claim 1, characterized in that: Each of the inner crushing roller groups (17) comprises two coarse rollers (21), each of the coarse rollers (21) being provided with crushing teeth, two ends of one of the coarse rollers (21) being provided with small-diameter gears (23), and two ends of the other coarse roller (21) being provided with recessed gears (24); The outer crushing roller group (18) comprises two fine rollers (22), each of the coarse rollers (21) is provided with crushing teeth, two ends of one of the fine rollers (22) are provided with small-diameter gears (23), and two ends of the other fine roller (22) are provided with recessed gears (24); All of the small-diameter gears (23) and recessed gears (24) are distributed and installed in the first chassis (7) and the second chassis (8).

8. The pulverizing device with multi-stage screening and filtering function for chemical product production according to claim 7, characterized in that: The first housing (7) is provided with an inner ring first gear ring (25), an inner ring second gear ring (26), an outer ring first gear ring (27) and an outer ring second gear ring (28), wherein the inner ring first gear ring (25) is meshed with a small-diameter gear (23) in the inner crushing roller group (17), and the inner ring second gear ring (26) is meshed with an indented gear (24) in the inner crushing roller group (17); The outer ring number one gear ring (27) meshes with the small diameter gear (23) in the outer crushing roller group (18), and the outer ring number two gear ring (28) meshes with the recessed gear (24) in the outer crushing roller group (18).

9. A pulverizing device with multi-stage screening and filtering function for chemical product production according to claim 8, characterized in that: The inner ring number one gear ring (25), the inner ring number two gear ring (26), the outer ring number one gear ring (27) and the outer ring number two gear ring (28) are all provided with conical tooth grooves on the side away from the cracking chamber (1); a pair of bevel gear sets (16) are symmetrically installed inside the first housing (7); each of the bevel gear sets (16) is provided with four bevel gears, the diameters of the four bevel gears decrease from the outside to the inside, and the four bevel gears are meshed with the conical tooth grooves on the outer ring number two gear ring (28), the outer ring number one gear ring (27), the inner ring number two gear ring (26) and the inner ring number one gear ring (25) in sequence; One end of the pair of bevel gear sets (16) passes through the first chassis (7), and one end of the bevel gear set (16) is connected to a small motor (15), which is installed on the outside of the first chassis (7).

10. A pulverizing device with multi-stage screening and filtering function for chemical product production according to claim 9, characterized in that: The internal structure and configuration of the second chassis (8) are the same as the internal structure and configuration of the first chassis (7).

Images