A wet grinding device for producing nano-activated calcium carbonate

Abstract

The present invention belongs to the technical field of grinding equipment, and specifically provides a wet grinding equipment for the production of nano-activated calcium carbonate, including a crushing bin provided with a rotatable crushing roller, the crushing bin is connected to a storage bin, a feeding pipe is provided at the bottom of the storage bin, a feeding valve electrically connected to a PLC control system is provided on the feeding pipe, a wet grinding bin is provided at the bottom of the storage bin, a wet grinding device capable of intermittent reciprocating motion is provided in the wet grinding bin, the wet grinding device is electrically connected to the PLC control system, a grinding disc is provided at the bottom of the wet grinding device, the grinding disc is movably connected to the grinding hole of the wet grinding bin, a liquid inlet hole and a feeding hole are provided in the grinding hole, the feeding hole is connected to the storage bin through a feeding pipe, a discharge hole is provided at the bottom of the grinding hole, a discharge valve electrically connected to the PLC control system is provided at the discharge hole, the grinding hole is connected to a drying bin, a heating device is provided in the drying bin, a bin door is hinged on one side of the drying bin, and the drying bin is connected to a liquid discharge bin provided with a drain pipe. The above can realize the stepwise addition of solution and grinding.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, in particular to a wet grinding equipment for producing nano-active calcium carbonate. Background Art

[0002] Nano active calcium carbonate refers to calcium carbonate materials that have been treated with surfactants and have a particle size within the nanometer range. It usually appears as white or light yellow hexagonal crystal powder, is odorless, insoluble in water and ethanol, soluble in acid and releases carbon dioxide.

[0003] In the production process of nano-activated calcium carbonate, wet grinding equipment plays a vital role. Wet grinding equipment is specially designed for ultra-fine grinding of materials in a wet environment. Its working principle is mainly based on the friction, impact and shearing between the grinding media and the material slurry.

[0004] The material slurry is generated by adding wet grinding solution to calcium carbide powder. The way of adding wet grinding solution to calcium carbide powder will affect the crushing effect. If the solution is added too quickly, the friction between the particles may be reduced, which will reduce the grinding effect. If too much solution is added, the concentration of the material slurry will be too high. Although it will increase the frequency of collisions between particles, it may also increase the agglomeration and adhesion between particles. Summary of the invention

[0005] In view of the above-mentioned defects, the present invention provides a wet grinding device for producing nano-activated calcium carbonate, which can add wet grinding solution in batches to ensure that the concentration of the material slurry is in an optimal state and improve the wet grinding effect.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a wet grinding device for the production of nano-activated calcium carbonate, comprising a crushing bin, wherein two rotatably connected crushing rollers are arranged in the crushing bin, wherein the crushing rollers are driven by a crushing driving device, wherein the bottom of the crushing bin is connected to a storage bin, wherein a plurality of feeding pipes are arranged at the bottom of the storage bin, wherein a feeding valve electrically connected to a PLC control system is arranged on the feeding pipe, wherein a wet grinding bin is arranged below the storage bin, wherein a wet grinding device capable of intermittent reciprocating motion is arranged in the wet grinding bin, wherein the wet grinding device is electrically connected to the PLC control system, wherein a grinding disc is arranged at the bottom of the wet grinding device, wherein the grinding disc can be A movably connected grinding hole is provided in the lower part of the wet grinding bin, a liquid inlet hole is provided in the upper part of the grinding hole, the liquid inlet hole is connected to the liquid inlet pump electrically connected to the PLC control system through a liquid inlet pipe, a feeding hole is provided below the liquid inlet hole in the grinding hole, the feeding hole is connected to the storage bin through the feeding pipe, a discharge hole is provided at the bottom of the grinding hole, a discharge valve electrically connected to the PLC control system is provided at the discharge hole, the grinding hole is connected to the drying bin below through the discharge hole, a heating device is provided in the drying bin, a bin door is hinged on one side of the drying bin, the drying bin is connected to the liquid drainage bin below, and a drain pipe is provided on one side of the liquid drainage bin.

[0007] As a further improvement of the present invention, the wet grinding device includes an electric cylinder vertically fixedly connected to the top of the wet grinding bin, the output end of the electric cylinder is fixedly connected to a push plate, the bottom of the push plate is fixedly connected to a plurality of groups of annular push rods, the bottom of the push rod is fixedly connected to an inner sleeve, the inner sleeve can be movably connected to the upper part of the sleeve, the sleeve is fixedly connected to the middle of the wet grinding bin, the lower part of the sleeve is provided with two parallel limit grooves, two vertical slideways are provided between the two limit grooves, the two slideways are arranged at 180°, the upper and lower sides of the inner sleeve are fixedly connected with blocks, the inner sleeve is slidably connected with a pressure rod, the pressure rod is provided with a slot obliquely arranged to match the block, the middle part of the pressure rod passes through the inner sleeve to provide a limiting platform, and limiting blocks are provided on both sides of the outer edge of the limiting platform, the limiting platform and the limiting block can be movably connected in the limiting groove and the slideway at the bottom of the sleeve, the lower part of the pressure rod passes through the sleeve, and the grinding disc is fixedly connected to the bottom of the pressure rod.

[0008] As a further improvement of the present invention, the two clamping blocks are arranged at 180 degrees, and the two clamping grooves arranged on the pressure rod are arranged at 180 degrees. As a further improvement of the present invention, the heating device is fixedly connected to the side wall of the drying chamber.

[0009] As a further improvement of the present invention, the heating device is fixedly connected to the side wall of the drying chamber.

[0010] As a further improvement of the present invention, an electric push rod is provided on the side of the drying bin away from the bin door, the electric push rod is electrically connected to the PLC control system, and a push plate is fixedly connected to the output end of the electric push rod.

[0011] As a further improvement of the present invention, the bottom plate of the drying bin is a filter screen.

[0012] As a further improvement of the present invention, the crushing drive device includes a crushing motor, the output end of the crushing motor is fixedly connected to the input end of the crushing reducer, the output end of the crushing reducer is fixedly connected to one end of one of the crushing rollers, and the two crushing rollers are driven by gear meshing.

[0013] As a further improvement of the present invention, a protective shell is arranged outside the gear.

[0014] As a further improvement of the present invention, the lower portion of the storage bin is tilted and arranged in a bucket shape.

[0015] Beneficial effects of the present invention:

[0016] 1. The feeding and liquid supply devices are controlled by the PLC control system, so that in the wet grinding process of nano-activated calcium carbonate, the wet grinding solution is added in batches and then repeatedly ground. The grinding solution is added in batches, so that the calcium carbide powder can be gradually moistened and dispersed during the grinding process, which helps to reduce the agglomeration phenomenon between particles and improve the grinding efficiency. At the same time, the concentration of the grinding medium can be adjusted to keep it within an appropriate range, thereby improving the grinding effect.

[0017] 2. By setting a grinding disc that can move up and down and rotate, the grinding disc can generate an extrusion force on the material during the downward pressing process, so that when rotating and grinding, in addition to rubbing the material, a shear force will also be generated on it, which makes up for the problem of insufficient grinding that may exist due to the inability to continuously rotate at high speed, and ensures the quality of wet grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric diagram of the wet grinding equipment for producing nano-activated calcium carbonate of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the wet grinding equipment used for the production of nano-activated calcium carbonate;

[0020] Figure 3 yes Figure 2 A is an enlarged schematic diagram;

[0021] Figure 4 yes Figure 3 The enlarged schematic diagram of point B in FIG.

[0022] Figure 5It is the axonometric drawing of the local structure of the compression rod;

[0023] Figure 6 It is a cross-sectional view of the internal structure of the inner sleeve;

[0024] Figure 7 It is a cross-sectional view of the internal structure of the sleeve;

[0025] Figure 8 It is a schematic diagram of the connection structure of the sleeve, the inner sleeve and the pressure rod;

[0026] Fig. 9 yes Figure 8 The enlarged schematic diagram of point C in FIG.

[0027] Fig.10 yes Figure 8 The enlarged schematic diagram at D in the middle;

[0028] Fig.11 It is a schematic diagram of the rotation direction of the pressure rod.

[0029] In the figure: 1-feeding port, 2-protective shell, 3-bin door, 4-crushing drive device, 5-crushing bin, 50-crushing roller, 6-storage bin, 7-electric cylinder, 8-push plate, 9-push rod, 10-pressure rod, 100-card slot, 101-limiting table, 102-limiting block, 11-inner sleeve, 111-card block, 12-sleeve, 120-first limiting slot, 121-slide, 122-second limiting slot, 13-drying bin, 14-drain pipe, 15-electric push rod, 16-heating device, 17-grinding hole, 18-feeding hole, 19-liquid inlet hole, 20-feeding pipe, 21-grinding disc, 22-discharge valve. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific examples described herein are only used to explain the present invention and are not intended to limit the present invention. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referenced to the directions of the accompanying drawings. Therefore, the directional terms used are used to illustrate and are not used to limit the present invention. In addition, in all embodiments, the same figure numerals represent the same elements.

[0031] See also Figures 1 to 11The present invention provides a wet grinding device for the production of nano-activated calcium carbonate, including a crushing bin 5, a feed port 1 is provided at the top of the crushing bin 5, and the feed port 1 is a bucket-shaped structure. Two crushing rollers 50 are provided in the crushing bin 5, and both ends of the crushing rollers 50 are rotatably connected in the crushing bin 5 through bearings, and both ends of the crushing rollers 50 pass through the crushing bin 5. One end of the two crushing rollers 50 is fixedly connected with mutually meshing gears, and a protective shell 2 is provided outside the gears. The other end of one of the crushing rollers 50 is fixedly connected to the output end of the crushing reducer, and the input end of the crushing reducer is fixedly connected to the output end of the crushing motor. The crushing reducer and the crushing motor constitute a crushing drive device 4, and a mounting plate is provided on the outer wall of the crushing bin 5. The crushing drive device 4 is fixedly connected to the mounting plate, and the crushing drive device 4 is electrically connected to the PLC control system.

[0032] As a further explanation of this embodiment, the pulverizing drive device 4 is started through the PLC control system, and the pulverizing drive device 4 drives the crushing roller 50 directly connected thereto to rotate, and the other crushing roller 50 also rotates therewith through gear meshing transmission, and large pieces of activated calcium carbonate raw materials are put into the feed port 1 at the top of the pulverizing bin 5, and the activated calcium carbonate raw materials are squeezed and crushed by the crushing roller 50 and crushed into powder with a larger diameter, thereby completing the preliminary crushing.

[0033] The bottom of the crushing bin 5 is connected to the storage bin 6, the lower part of the storage bin 6 is tilted in a bucket shape, and three feeding holes are arranged at the bottom of the storage bin 6. The bottom of each feeding hole is provided with a feeding pipe 20, and a feeding valve is arranged on the feeding pipe 20, and the feeding valve is electrically connected to the PLC control system. The feeding pipe 20 is connected to the wet grinding bin below the crushing bin 5.

[0034] As a further explanation of this embodiment, the active calcium carbonate crushed by the crushing roller 50 in the crushing bin 5 enters the storage bin 6. The start and stop of the feeding valve is controlled by the PLC control system, so that the active calcium carbonate at the bottom of the storage bin 6 can be intermittently discharged from the feeding hole and enter the wet grinding bin.

[0035] A wet grinding device is provided inside the wet grinding bin. The wet grinding device includes two electric cylinders 7, which are fixedly connected to the two sides of the top of the wet grinding bin, and are electrically connected to the PLC control system. The electric cylinders 7 are arranged vertically, and the output ends of the two electric cylinders 7 are fixedly connected to the same push plate 8, and the middle and both sides of the push plate 8 are fixedly connected to a plurality of annular push rods 9. The bottom of the push rod 9 is fixedly connected to an inner sleeve 11, and two clamping blocks 111 are arranged inside the inner sleeve 11, and the two clamping blocks 111 are respectively arranged at the upper and lower parts of the inner sleeve 11, and are arranged at 180 degrees.

[0036] The inner sleeve 11 is provided with a sleeve 12 on the outside. The inner sleeve 11 can be slidably connected to the upper part of the sleeve 12. The sleeve 12 is fixedly connected to the middle part of the wet grinding bin. The lower part of the sleeve 12 is provided with two annular limiting grooves, and the two limiting grooves are arranged in parallel. The upper one is the first limiting groove 120, and the lower one is the second limiting groove 122. Two vertical slideways 121 are arranged between the first limiting groove 120 and the second limiting groove 122, and the two slideways 121 are arranged at 180 degrees.

[0037] A pressure rod 10 is arranged inside the inner sleeve 11, and the pressure rod 10 can be slidably connected inside the inner sleeve 11. Two card slots 100 are opened on the outer side of the pressure rod 10, and the two card slots 100 are arranged in an inclined arc along the outer edge of the pressure rod 10, and the two card slots 100 are arranged at 180 degrees. The card slot 100 cooperates with the card block 111 arranged inside the inner sleeve 11 and can be slidably connected.

[0038] The middle of the pressure rod 10 passes through the inner sleeve 11, and a limiting platform 101 is arranged in the middle of the pressure rod 10. The limiting platform 101 is in the shape of a truncated cone, and two protruding limiting blocks 102 are arranged on the outer edge of the limiting platform 101, and the two limiting blocks 102 are arranged at 180 degrees. The limiting blocks 102 are rotatably connected with the limiting grooves arranged inside the inner sleeve 11, and the limiting blocks 102 are movably connected with the slideway 121.

[0039] As a further explanation of this embodiment, the PLC control system controls the two electric cylinders 7 to push the push plate 8 downward at the same time, and the push plate 8 drives the push rod 9 to move, and the push rod 9 pushes the inner sleeve 11 inside the sleeve 12 to move downward. During the downward movement of the inner sleeve 11, the block 111 is always located in the middle of the slot 100 on the pressure rod 10, and the inner sleeve 11 is against the lower wall of the slot 100 through the block 111, pushing the pressure rod 10 to move downward. At the same time, the limit block 102 moves downward along the slide 121, and the limit platform 101 enters the second limit groove 122 below from the first limit groove 120 above. When the limit platform 101 enters the second limit groove 122 below, the inner sleeve 11 continues to move downward. Since the limit block 102 is located in the second limit groove 122 and there is no slide 121 below, the pressure rod 10 cannot continue to move downward. At this time, the block 111 abuts against the lower wall of the slot 100, squeezing the pressure rod 10 so that the pressure rod 10 is subjected to an oblique force, thereby causing the pressure rod 10 to rotate. The pressure rod 10 rotates continuously so that the block 111 continuously approaches one end of the slot 100. When the block 111 is located at one end of the slot 100, it stops rotating. At this time, the limit block 102 rotates 180° to face the slideway 121 again.

[0040] Then the PLC control system controls the electric cylinder 7 to drive the push plate 8 to move upward, and pulls the inner sleeve 11 upward through the push rod 9. The inner cylinder presses against the upper wall of the slot 100 through the block 111, pulling the pressure rod 10 to move upward. When the limit block 102 of the pressure rod 10 returns to the first limit slot 120 above along the slide 121, the vertical movement is stopped again. At this time, the inner sleeve 11 continues to move upward, presses against the upper wall of the slot 100 through the block 111, thereby squeezing the pressure rod 10 so that the pressure rod 10 is subjected to a force opposite to that in the second limit slot 122, causing the pressure rod 10 to rotate in the opposite direction, thereby causing the block 111 to return to the initial position in the middle of the slot 100. At this time, the limit block 102 rotates 180° in the opposite direction to face the slide 121 again, and the above process is repeated continuously through the PLC control system.

[0041] The lower part of the pressure rod 10 passes through the sleeve 12, and the bottom of the pressure rod 10 is fixedly connected with a grinding disc 21. The grinding disc 21 fits in the wet grinding hole set at the lower part of the wet grinding bin, and the inner diameter of the wet grinding hole is consistent with the outer diameter of the grinding disc 21. An inclined liquid inlet hole 19 is provided on the upper part of the inner hole wall of the wet grinding hole. The liquid inlet hole 19 is connected to the input end of the liquid inlet pump set outside the wet grinding equipment through a liquid inlet pipe. The input end of the liquid inlet pump is connected to a liquid storage barrel, and the liquid storage barrel contains a solution for wet grinding. The liquid inlet pump is electrically connected to the PLC control system. A feed hole 18 is provided below the liquid inlet hole 19 in the wet grinding hole, and the feed hole 18 is connected to the end of the feed pipe 20.

[0042] As a further explanation of this embodiment, the pressure rod 10 is controlled to descend through the PLC control system. When the pressure rod 10 descends to the bottom, the grinding disc 21 fixed at the bottom of the pressure rod 10 will contact the bottom of the wet grinding hole, and then the grinding disc 21 rotates with the rotation of the pressure rod 10, thereby achieving the grinding of the material at the bottom of the grinding hole 17.

[0043] A discharge hole is provided at the center of the bottom of the wet grinding hole, and a discharge valve 22 is provided at the discharge hole. The discharge valve 22 is electrically connected to the PLC control system.

[0044] The bottom of the discharge hole is connected to the drying bin 13. A heating device 16 is provided on the inner wall of the drying bin 13. The bottom plate of the drying bin 13 is a filter screen. A bin door 3 is hinged on one side of the drying bin 13. An electric push rod 15 is provided on the side of the drying bin 13 away from the bin door 3. The electric push rod 15 is electrically connected to the PLC control system. The electric push rod 15 is fixedly connected to the push rod groove provided inside the drying bin 13. The output end of the electric push rod 15 is fixedly connected to a push plate, which acts on the filter screen. Below the filter screen is a drainage bin, the bottom plate of which is inclined to one side, and a drain pipe 14 is provided in the middle position of the lower side.

[0045] As a further explanation of this embodiment, the discharge valve 22 is controlled to open by the PLC control system, and the material ground by the grinding disc 21 falls into the drying bin 13 from the discharge hole. A part of the moisture in the material passes through the filter, enters the bottom of the filter and is then discharged from the drain pipe 14, and the other part needs to be dried by the heating device 16 arranged inside the drying bin 13. After drying, the material is pushed out from the end where the bin door 3 is located by the electric push rod 15.

[0046] The working principle and use process of this embodiment:

[0047] First, the crushing drive device 4 is started through the PLC control system, and the active calcium carbonate raw material is put into the feed port 1, and is preliminarily crushed by the crushing roller 50. The crushed material enters the storage bin 6, and then the feeding valve is controlled by the PLC control system to open for a certain period of time and then closed, so that part of the material enters the wet grinding bin from the storage bin 6 along the feeding pipe 20, and the material enters the bottom of the wet grinding hole from the feeding hole 18 set in the wet grinding hole.

[0048] At this time, the motor is started through the PLC control system, so that the pressure rod 10 drives the grinding disc 21 to descend, and rotates at the bottom of the wet grinding hole to grind the material at the bottom of the wet grinding hole, and then rises again. This process of pressing down and rotating and grinding is repeated continuously. When the grinding disc 21 rises to the top, the PLC control system controls the liquid inlet pump to start and then shut down, and injects a quantitative amount of solution for wet grinding of activated calcium carbonate into the grinding hole 17 through the liquid inlet hole 19.

[0049] Through the above process, the activated calcium carbonate entering the wet grinding hole is continuously extruded and ground while adding the wet grinding solution. After grinding, the discharge valve 22 is opened by the PLC control system, so that the slurry-like nano-activated calcium carbonate after wet grinding flows out from the discharge hole and enters the drying bin 13. The slurry-like nano-activated calcium carbonate in the drying bin 13 is filtered by the filter screen and dried by the heating device 16 to obtain the final nano-activated calcium carbonate powder, and then the dried nano-activated calcium carbonate powder is pushed out from the bin door 3 side by the electric push rod 15, thereby realizing the wet grinding production of nano-activated calcium carbonate.

[0050] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above implementation measures. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A wet grinding device for producing nano-activated calcium carbonate, characterized in that: The invention comprises a crushing bin (5), wherein two rotatably connected crushing rollers (50) are arranged in the crushing bin (5), wherein the crushing rollers (50) are driven by a crushing driving device (4), wherein the bottom of the crushing bin (5) is connected to a material storage bin (6), wherein a plurality of feeding pipes (20) are arranged at the bottom of the material storage bin (6), wherein a feeding valve electrically connected to a PLC control system is arranged on the feeding pipe (20), wherein a wet grinding bin is arranged below the material storage bin (6), wherein a wet grinding device capable of intermittent reciprocating motion is arranged in the wet grinding bin, wherein the wet grinding device is electrically connected to the PLC control system, wherein a grinding disc (21) is arranged at the bottom of the wet grinding device, wherein the grinding disc (21) is movably connected to a grinding hole (17) arranged at the bottom of the wet grinding bin, wherein the upper part of the grinding hole (17) is provided with a A liquid inlet hole (19), the liquid inlet hole (19) being connected to a liquid inlet pump electrically connected to a PLC control system through a liquid inlet pipe, a feeding hole (18) being provided below the liquid inlet hole (19) in the grinding hole (17), the feeding hole (18) being connected to a storage bin (6) through the feeding pipe (20), a discharge hole being provided at the bottom of the grinding hole (17), a discharge valve (22) being provided at the discharge hole electrically connected to the PLC control system, the grinding hole (17) being connected to a drying bin (13) below through the discharge hole, a heating device (16) being provided in the drying bin (13), a bin door (3) being hinged on one side of the drying bin (13), the drying bin (13) being connected to a liquid drainage bin below, and a drainage pipe (14) being provided on one side of the liquid drainage bin; The wet grinding device comprises an electric cylinder (7) vertically fixedly connected to the top of the wet grinding bin, the output end of the electric cylinder (7) is fixedly connected to a push plate (8), the bottom of the push plate (8) is fixedly connected to a plurality of groups of annular push rods (9), the bottom of the push rods (9) is fixedly connected to an inner sleeve (11), the inner sleeve (11) is movably connected to the upper part of a sleeve (12), the sleeve (12) is fixedly connected to the middle part of the wet grinding bin, and the lower part of the sleeve (12) is provided with two parallel limit grooves, one of the two limit grooves being rotatable. Two vertical slideways (121) are arranged between the inner sleeve (11), the two slideways (121) are arranged at 180 degrees, the upper and lower sides of the inner sleeve (11) are fixedly connected with clamping blocks (111), the inner sleeve (11) is slidably connected with a pressure rod (10), the pressure rod (10) is provided with a clamping groove (100) arranged obliquely to match the clamping block (111), the two clamping blocks (111) are arranged at 180 degrees, and the two clamping grooves (100) arranged on the pressure rod (10) are arranged at 180 degrees; A limiting platform (101) is arranged at the middle of the pressure rod (10) passing through the inner sleeve (11), and limiting blocks (102) are arranged on both sides of the outer edge of the limiting platform (101). The limiting platform (101) and the limiting blocks (102) are movably connected to the limiting groove and the slideway (121) at the bottom of the sleeve (12). The lower part of the pressure rod (10) passes through the sleeve (12), and the grinding disc (21) is fixedly connected to the bottom of the pressure rod (10).

2. The wet grinding equipment for producing nano-active calcium carbonate according to claim 1, characterized in that: The heating device (16) is fixedly connected to the side wall of the drying chamber (13).

3. The wet grinding equipment for producing nano-activated calcium carbonate according to claim 1, characterized in that: An electric push rod (15) is provided on a side of the drying bin (13) away from the bin door (3); the electric push rod (15) is electrically connected to a PLC control system; and a push plate is fixedly connected to an output end of the electric push rod (15).

4. The wet grinding equipment for producing nano-activated calcium carbonate according to claim 1, characterized in that: The bottom plate of the drying bin (13) is a filter screen.

5. The wet grinding equipment for producing nano-activated calcium carbonate according to claim 1, characterized in that: The bottom plate of the drainage bin is arranged in an inclined manner, and the drainage pipe (14) is arranged on a lower side of the drainage bin.

6. The wet grinding equipment for producing nano-activated calcium carbonate according to claim 1, characterized in that: The pulverizing drive device (4) comprises a pulverizing motor, the output end of the pulverizing motor is fixedly connected to the input end of a pulverizing reducer, the output end of the pulverizing reducer is fixedly connected to one end of one of the crushing rollers (50), and the two crushing rollers (50) are driven by gear meshing.

7. The wet grinding equipment for producing nano-active calcium carbonate according to claim 6, characterized in that: A protective shell (2) is arranged outside the gear.

8. The wet grinding equipment for producing nano-active calcium carbonate according to claim 1, characterized in that: The lower part of the storage bin (6) is arranged in a bucket shape and is inclined.

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