Grinding machine for calcium carbonate production

Abstract

The utility model discloses a grinding machine for calcium carbonate production, which relates to the technical field of calcium carbonate grinding machines and comprises a workbench, supporting legs fixedly connected to the bottom of the workbench, a grinding box fixedly connected to the top of the workbench, a first motor fixedly connected to the surface of the grinding box, and a first flow guide plate fixedly connected to one side, away from the workbench, of the grinding box. The side face of the first flow guide plate is rotationally connected with an opening and closing door. The grinding machine for calcium carbonate production comprises a disc cam reciprocating mechanism and a reciprocating vibration mechanism. Through the arrangement of a liquid spraying pipe, a filtering plate and a first grinding wheel, calcium carbonate of different sizes can be effectively screened, meanwhile, water can be sprayed to the surface of the calcium carbonate, the calcium carbonate can be divided into different sizes through screening treatment, and therefore the purity and quality of products are improved, and excessive mechanical energy consumption can be reduced; and water is sprayed on the surface of calcium carbonate, so that generation and suspension of dust can be effectively reduced, and environmental pollution and health risks are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of calcium carbonate grinders, in particular to a grinder for calcium carbonate production. Background Art

[0002] The grinding machine is an indispensable equipment in the production process of ultrafine heavy calcium carbonate. The performance of the grinding machine directly affects the product quality of ultrafine heavy calcium carbonate. The working principle of the common grinding machine is: the motor drives the reducer, the reducer realizes deceleration and drives the stirring device to rotate, the stirring device stirs the grinding medium, and the calcium carbonate particles and the grinding medium shear, collide and rub against each other in the grinding machine, and the particles will gradually become finer.

[0003] In the prior art, when grinding calcium carbonate, most of the grinding is done by a mechanical grinder. However, before grinding calcium carbonate, it is not proposed to screen the calcium carbonate and spray water stains on the surface of the calcium carbonate. If calcium carbonate of different sizes is directly ground, not only will the mechanical and motor consumption of the grinder be increased, but also the particle size distribution of the calcium carbonate powder obtained after grinding may be uneven, and some particles may still be large, affecting the product quality and performance. In addition, a large amount of dust will be generated during grinding. If the calcium carbonate dust is not handled in time, it may act as a carrier of bacteria and pathogens to the human body, increasing the risk of infection.

[0004] In addition, the prior art does not propose to vibrate and guide the ground calcium carbonate. If the guide plate is stationary for a long time, the surface of the guide plate will be sticky with the powdered calcium carbonate, thereby affecting the feeding speed of the ground calcium carbonate.

[0005] Therefore in view of this, the present invention proposes a grinding machine for calcium carbonate production to solve the above problems and improve the deficiencies in the prior art. Utility Model Content

[0006] In view of the shortcomings of the prior art, the present invention provides a grinding machine for calcium carbonate production to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grinding machine for calcium carbonate production, used for grinding calcium carbonate, comprising: a workbench, the bottom of the workbench is fixedly connected to a support leg, the top of the workbench is fixedly connected to a grinding box, the surface of the grinding box is fixedly connected to a first motor, the side of the grinding box away from the workbench is fixedly connected to a first guide plate, the side of the first guide plate is rotatably connected to a switch door, and the grinding machine for calcium carbonate production comprises: a disc cam reciprocating mechanism, a reciprocating vibration mechanism;

[0008] The disc cam reciprocating mechanism is arranged on the top of the grinding box, and the disc cam reciprocating mechanism is used for vibrating and screening the calcium carbonate and spraying water stains at the same time;

[0009] The reciprocating vibration mechanism is arranged at the bottom of the workbench, and the reciprocating vibration mechanism is used for vibrating and feeding the ground calcium carbonate.

[0010] Preferably, the disc cam reciprocating mechanism includes a second motor, the second motor is fixedly connected to the top of the grinding box, the output shaft end of the second motor is fixedly connected to a rotating shaft, the surface of the rotating shaft is fixedly connected to a first grinding wheel, the surface of the first grinding wheel is provided with a second grinding wheel, and the second grinding wheel is fixedly connected to the surface of the output end of the first motor.

[0011] Preferably, a disc is fixedly connected to the side of the rotating shaft close to the second motor, a slide plate is provided on the side of the disc, a first moving rod is fixedly connected to the side of the slide plate, a first moving rod is slidably connected to the side of the slide plate on the side away from the slide plate, the bottom of the first rectangular plate is fixedly connected to the grinding box, a second moving rod is fixedly connected to the side of the slide plate away from the first moving rod, a second moving rod is slidably connected to the side of the slide plate on the side away from the slide plate, and the bottom of the second rectangular plate is fixedly connected to the grinding box.

[0012] Preferably, an L-shaped plate is fixedly connected to the top of the first movement rod, and a filter plate is fixedly connected to one end of the L-shaped plate away from the first movement rod, and a plurality of groups of holes are formed on the surface of the filter plate.

[0013] Preferably, a moving plate is fixedly connected to the top of the second moving rod, a wedge-shaped extrusion column is fixedly connected to the side of the moving plate away from the second moving rod, a wedge-shaped piston rod is provided on the side of the wedge-shaped extrusion column, a piston cylinder is slidably connected to the surface of the wedge-shaped piston rod, a one-way valve and a return spring are provided inside the piston cylinder, a liquid spray pipe is fixedly connected to the surface of the piston cylinder, a liquid storage tank is fixedly connected to the bottom of the piston cylinder, and the liquid storage tank is fixedly connected to the top of the grinding box.

[0014] Preferably, the liquid spray pipes are arranged in four groups along the surface of the piston cylinder, and the liquid spray pipes, the piston cylinder, the wedge-shaped piston rod, the liquid storage box, the wedge-shaped extrusion column and the moving plate are symmetrically arranged in two groups along the transverse center of the grinding box.

[0015] Preferably, the reciprocating vibration mechanism includes a U-shaped fixing plate, the U-shaped fixing plate is fixedly connected to the bottom of the first moving rod, the end of the U-shaped fixing plate away from the first moving rod is fixedly connected to the second guide plate, the top of the second guide plate is fixedly connected to a sliding block, the surface of the sliding block is slidably connected to a slide groove fixing plate, the top of the slide groove fixing plate is fixedly connected to the workbench, and a slide groove is opened inside the slide groove fixing plate.

[0016] Preferably, the slide groove fixing plates and the sliding blocks are distributed in four groups along the four corners of the second guide plate.

[0017] Compared with the prior art, the present invention provides a grinding machine for calcium carbonate production, which has the following beneficial effects:

[0018] 1. Through the arrangement of the liquid spray pipe, the filter plate and the first grinding wheel, it is possible to effectively screen calcium carbonate of different sizes and spray water on the surface of calcium carbonate. The calcium carbonate can be divided into different sizes through screening, thereby improving the purity and quality of the product and reducing excessive mechanical energy consumption. By spraying water on the surface of calcium carbonate, the generation and suspension of dust can be effectively reduced, thereby reducing environmental pollution and health risks.

[0019] 2. Through the arrangement of the U-shaped fixed plate, the second guide plate and the chute fixed plate, the second guide plate can be effectively vibrated for material unloading. The vibration guide plate can prevent the accumulation and blockage of materials on the guide plate, keep the surface of the guide plate unobstructed, ensure the smooth unloading of materials, and reduce the downtime and maintenance costs in production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the new model;

[0021] Figure 2 This is a schematic diagram of the structure of the new model without the switch door;

[0022] Figure 3 This is a top-down stereogram of the novel grinding structure;

[0023] Figure 4 This is a schematic diagram of the structure of the new disc cam reciprocating mechanism;

[0024] Figure 5 It is a partial schematic diagram of the new disc cam reciprocating mechanism;

[0025] Figure 6 This is a schematic diagram of the structure of the new reciprocating vibration mechanism;

[0026] Figure 7 This is a schematic diagram of the local structure of the new reciprocating vibration mechanism.

[0027] The numbers in the figure are:

[0028] 1. Workbench; 2. Support legs; 3. Grinding box; 4. First motor; 5. Open / close door; 6. First guide plate; 7. Disc cam reciprocating mechanism; 701. Second motor; 702. Slide plate; 703. Rotating shaft; 704. Disc; 705. First grinding wheel; 706. Second grinding wheel; 707. First moving rod; 708. L-shaped plate; 709. First rectangular plate; 710. Second moving rod; 711. Second rectangular plate; 718. Filter plate; 712. Moving plate; 713. Wedge-shaped piston rod; 714. Piston cylinder; 715. Spray pipe; 716. Wedge-shaped extrusion column; 717. Liquid storage tank; 8. Reciprocating vibration mechanism; 801. U-shaped fixing plate; 802. Second guide plate; 803. Slide fixing plate; 804. Sliding block. DETAILED DESCRIPTION

[0029] 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 them. 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.

[0030] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0031] Embodiments of the present invention

[0032] Please refer to Figures 1 to 5 As shown:

[0033] A grinding machine for producing calcium carbonate, used for grinding calcium carbonate, comprises: a workbench 1, a support leg 2 is fixedly connected to the bottom of the workbench 1, a grinding box 3 is fixedly connected to the top of the workbench 1, a first motor 4 is fixedly connected to the surface of the grinding box 3, a first guide plate 6 is fixedly connected to the side of the grinding box 3 away from the workbench 1, and a switch door 5 is rotatably connected to the side of the first guide plate 6. A grinding machine for producing calcium carbonate comprises: a disc cam reciprocating mechanism 7, a reciprocating vibration mechanism 8;

[0034] The disc cam reciprocating mechanism 7 is arranged on the top of the grinding box 3, and the disc cam reciprocating mechanism 7 is used for vibrating and screening the calcium carbonate while spraying water stains;

[0035] The reciprocating vibration mechanism 8 is arranged at the bottom of the workbench 1, and the reciprocating vibration mechanism 8 is used for vibrating and feeding the ground calcium carbonate.

[0036] The disc cam reciprocating mechanism 7 includes a second motor 701, which is fixedly connected to the top of the grinding box 3. The output shaft end of the second motor 701 is fixedly connected to a rotating shaft 703, and the surface of the rotating shaft 703 is fixedly connected to a first grinding wheel 705. The surface of the first grinding wheel 705 is provided with a second grinding wheel 706, and the second grinding wheel 706 is fixedly connected to the surface of the output end of the first motor 4.

[0037] A disc 704 is fixedly connected to the side of the rotating shaft 703 close to the second motor 701, a slide plate 702 is arranged on the side of the disc 704, a first moving rod 707 is fixedly connected to the side of the slide plate 702, a first moving rod 707 is slidably connected to the side of the first moving rod 707 away from the slide plate 702, the bottom of the first rectangular plate 709 is fixedly connected to the grinding box 3, a second moving rod 710 is fixedly connected to the side of the slide plate 702 away from the first moving rod 707, a second moving rod 710 is slidably connected to the side of the second moving rod 710 away from the slide plate 702, and the bottom of the second rectangular plate 711 is fixedly connected to the grinding box 3.

[0038] An L-shaped plate 708 is fixedly connected to the top of the first movement rod 707 , and a filter plate 718 is fixedly connected to one end of the L-shaped plate 708 away from the first movement rod 707 . A plurality of groups of holes are formed on the surface of the filter plate 718 .

[0039] A moving plate 712 is fixedly connected to the top of the second moving rod 710, and a wedge-shaped extrusion column 716 is fixedly connected to the side of the moving plate 712 away from the second moving rod 710. A wedge-shaped piston rod 713 is arranged on the side of the wedge-shaped extrusion column 716. A piston cylinder 714 is slidably connected to the surface of the wedge-shaped piston rod 713. A one-way valve and a return spring are arranged inside the piston cylinder 714. A liquid spray pipe 715 is fixedly connected to the surface of the piston cylinder 714, and a liquid storage tank 717 is fixedly connected to the bottom of the piston cylinder 714. The liquid storage tank 717 is fixedly connected to the top of the grinding box 3.

[0040] Four groups of liquid spray pipes 715 are arranged along the surface of the piston cylinder 714, and two groups of liquid spray pipes 715, piston cylinder 714, wedge-shaped piston rod 713, liquid storage box 717, wedge-shaped extrusion column 716 and moving plate 712 are symmetrically arranged along the horizontal center of the grinding box 3.

[0041] Further Embodiments

[0042] Please refer to Figure 4 and Figure 7 As shown:

[0043] The reciprocating vibration mechanism 8 includes a U-shaped fixed plate 801, which is fixedly connected to the bottom of the first moving rod 707. The end of the U-shaped fixed plate 801 away from the first moving rod 707 is fixedly connected to the second guide plate 802. The top of the second guide plate 802 is fixedly connected to a sliding block 804. The surface of the sliding block 804 is slidably connected to a slide groove fixed plate 803. The top of the slide groove fixed plate 803 is fixedly connected to the workbench 1, and a slide groove is opened inside the slide groove fixed plate 803.

[0044] Four groups of slide groove fixing plates 803 and sliding blocks 804 are distributed along the four corners of the second guide plate 802 .

[0045] Everything in the above example works like this:

[0046] In the initial state: the disc 704 in the disc cam reciprocating mechanism 7 is placed at an eccentric position on the top of the rotating shaft 703, the slide plate 702 is placed on the top of the grinding box 3, the second movement rod 710 is placed inside the second rectangular plate 711 and slides to the extreme, the wedge-shaped extrusion column 716 and the wedge-shaped piston rod 713 are placed in contact, the spray pipe 715 is placed with water inside, the U-shaped fixed plate 801 in the reciprocating vibration mechanism 8 is fixedly connected to the second guide plate 802, and the sliding block 804 is placed to slide inside the slide fixed plate 803;

[0047] The following is the working process of grinding calcium carbonate, screening it and spraying water stains on the surface of calcium carbonate:

[0048] When in use, the staff first fills the liquid storage tank 717 with water, then manually opens the switch door 5, then places calcium carbonate on the surface of the filter plate 718, and then starts the second motor 701 to rotate the rotating shaft 703 fixedly connected to its output shaft end clockwise. Please refer to Figure 5 At that time, because the center of the disk 704 is offset from the center of the rotating shaft 703, it is fixedly connected. Therefore, when the rotating shaft 703 rotates clockwise, it will drive the disk 704 to rotate clockwise. Figure 4 and Figure 5When the disc 704 rotates clockwise, it squeezes the rotating shaft 703 to move away from the second rectangular plate 711. When the rotating shaft 703 moves away from the second rectangular plate 711, it drives the first movement rod 707 fixedly connected to its side to move away from the second rectangular plate 711. The first movement rod 707 moves away from the second rectangular plate 711, which drives the L-shaped plate 708 fixedly connected to its surface to move away from the second rectangular plate 711. The L-shaped plate 708 moves away from the second rectangular plate 711, which drives the filter plate 718 fixedly connected to its top to move away from the second rectangular plate 711. At this time, when the rotating shaft 703 moves away from the second rectangular plate 711, it also drives the second movement rod 710 fixedly connected to the side away from the first movement rod 707 to move closer to the first rectangular plate 709. When the wedge-shaped extrusion column 716 and the wedge-shaped piston rod 713 are initially in contact with each other, and a return spring is provided inside the piston cylinder 714, the wedge-shaped extrusion column 716 will not contact the wedge-shaped piston rod 713 when it moves toward the first rectangular plate 709. At this time, the return spring provided inside the piston cylinder 714 will reset the wedge-shaped piston rod 713. When the wedge-shaped piston rod 713 is reset, the water inside the liquid storage tank 717 can flow into the piston cylinder 714, so as to facilitate the subsequent extrusion of the wedge-shaped piston rod 713.

[0049] Furthermore, when the slide plate 702 rotates clockwise, it will drive the first grinding wheel 705 fixedly connected to its surface to rotate clockwise, and when the output shaft of the first motor 4 rotates counterclockwise, it will drive the second grinding wheel 706 to rotate counterclockwise, so that the calcium carbonate screened by the filter plate 718 can be ground. When the rotating shaft 703 continues to rotate, it will squeeze the rotating shaft 703 to move closer to the second rectangular plate 711. When the rotating shaft 703 moves toward the second rectangular plate 711, it will drive the second movement rod 710 and the first movement rod 707 fixedly connected on both sides to move closer to the second rectangular plate 711. When the first movement rod 707 and the second rectangular plate 711 move closer to the second rectangular plate 711, they will drive the L-shaped plate 708 fixedly connected to the top thereof to move closer to the second rectangular plate 711. When the L-shaped plate 708 moves closer to the second rectangular plate 711, it will drive the filter plate 718 fixedly connected to the side away from the first movement rod 707 to move closer to the second rectangular plate 711. The calcium carbonate on the surface of the filter plate 718 can be screened by reciprocating vibration. The calcium carbonate of different sizes screened by reciprocating vibration can be conveniently ground by the first grinding wheel 705 and the second grinding wheel 706, so that the problem of excessive mechanical energy consumption during grinding can be reduced. When the second moving rod 710 moves toward the second rectangular plate 711, it will drive the moving plate 712 fixedly connected to its top to move toward the second rectangular plate 711. When the moving plate 712 moves toward the second rectangular plate 711, it will drive the wedge-shaped extrusion column 716 fixedly connected to the side away from the second moving rod 710 to move toward the second rectangular plate 711. When the wedge-shaped extrusion column 716 moves toward the second rectangular plate 711, it will squeeze the wedge-shaped piston rod 713 to slide inside the piston cylinder 714, so that the water placed inside the piston cylinder 714 is sprayed from the spray pipe 715 to the surface of the calcium carbonate placed on the surface of the filter plate 718. By spraying water on the surface of the calcium carbonate, the generation and suspension of dust can be effectively reduced, thereby reducing environmental pollution and health risks.

[0050] The following is the working process of the reciprocating vibration mechanism 8 to realize the vibration collection of the ground calcium carbonate:

[0051] Please combine Figure 4 , Figure 6 and Figure 7When the L-shaped plate 708 reciprocates, it will drive the U-shaped fixed plate 801 fixedly connected to its bottom to reciprocate, and the reciprocating movement of the U-shaped fixed plate 801 will drive the second guide plate 802 fixedly connected to the side away from the L-shaped plate 708 to reciprocate. At this time, the first grinding wheel 705 and the second grinding wheel 706 have cooperated to grind the calcium carbonate into powder, and the bottom of the second guide plate 802 has been placed by the staff. The collection box, when the calcium carbonate is ground into powder, will be guided from the second guide plate 802 to the inside of the collection box placed at the bottom of the second guide plate 802. Furthermore, the second guide plate 80 When the second guide plate 802 reciprocates, the sliding block 804 fixedly connected to the top thereof will be driven to reciprocate. Since the slide groove fixing plate 803 is fixedly connected to the bottom of the workbench 1, and the sliding block 804 is slidably connected to the slide groove fixing plate 803, when the second guide plate 802 reciprocates, the sliding block 804 fixedly connected to the top of the second guide plate 802 will slide within the slide groove fixing plate 803 to limit the movement direction of the second guide plate 802. When the second guide plate 802 reciprocates, it can also prevent the inner cavity of the second guide plate 802 from sticking to the powdered calcium carbonate, thereby effectively improving the unloading speed of the second guide plate 802.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding machine for producing calcium carbonate, used for grinding calcium carbonate, comprising: A workbench (1), wherein a support leg (2) is fixedly connected to the bottom of the workbench (1), a grinding box (3) is fixedly connected to the top of the workbench (1), a first motor (4) is fixedly connected to the surface of the grinding box (3), a first guide plate (6) is fixedly connected to the side of the grinding box (3) away from the workbench (1), and a switch door (5) is rotatably connected to the side of the first guide plate (6), characterized in that the grinding machine for calcium carbonate production comprises: a disc cam reciprocating mechanism (7), and a reciprocating vibration mechanism (8); The disc-shaped cam reciprocating mechanism (7) is arranged on the top of the grinding box (3), and the disc-shaped cam reciprocating mechanism (7) is used to perform vibration screening on the calcium carbonate and spray water stains at the same time; The reciprocating vibration mechanism (8) is arranged at the bottom of the workbench (1), and the reciprocating vibration mechanism (8) is used to vibrate and discharge the ground calcium carbonate.

2. A grinding machine for calcium carbonate production according to claim 1, characterized in that: The disc cam reciprocating mechanism (7) comprises a second motor (701), the second motor (701) is fixedly connected to the top of the grinding box (3), the output shaft end of the second motor (701) is fixedly connected to a rotating shaft (703), the surface of the rotating shaft (703) is fixedly connected to a first grinding wheel (705), the surface of the first grinding wheel (705) is provided with a second grinding wheel (706), and the second grinding wheel (706) is fixedly connected to the output end surface of the first motor (4).

3. A grinding machine for producing calcium carbonate according to claim 2, characterized in that: A disc (704) is fixedly connected to the side of the rotating shaft (703) close to the second motor (701), a slide plate (702) is arranged on the side of the disc (704), a first movement rod (707) is fixedly connected to the side of the slide plate (702), a first rectangular plate (709) is slidably connected to the side of the first movement rod (707) away from the slide plate (702), the bottom of the first rectangular plate (709) is fixedly connected to the grinding box (3), a second movement rod (710) is fixedly connected to the side of the slide plate (702) away from the first movement rod (707), a second rectangular plate (711) is slidably connected to the side of the second movement rod (710) away from the slide plate (702), and the bottom of the second rectangular plate (711) is fixedly connected to the grinding box (3).

4. A grinding machine for calcium carbonate production according to claim 3, characterized in that: An L-shaped plate (708) is fixedly connected to the top of the first movement rod (707), and a filter plate (718) is fixedly connected to one end of the L-shaped plate (708) away from the first movement rod (707), and a plurality of groups of holes are formed on the surface of the filter plate (718).

5. A grinding machine for calcium carbonate production according to claim 3, characterized in that: A moving plate (712) is fixedly connected to the top of the second moving rod (710), and a wedge-shaped extrusion column (716) is fixedly connected to the side of the moving plate (712) away from the second moving rod (710). A wedge-shaped piston rod (713) is arranged on the side of the wedge-shaped extrusion column (716), and a piston cylinder (714) is slidably connected to the surface of the wedge-shaped piston rod (713). A one-way valve and a return spring are arranged inside the piston cylinder (714), and a liquid spray pipe (715) is fixedly connected to the surface of the piston cylinder (714), and a liquid storage tank (717) is fixedly connected to the bottom of the piston cylinder (714), and the liquid storage tank (717) is fixedly connected to the top of the grinding box (3).

6. A grinding machine for calcium carbonate production according to claim 5, characterized in that: The liquid spraying pipes (715) are arranged in four groups along the surface of the piston cylinder (714), and the liquid spraying pipes (715), the piston cylinder (714), the wedge-shaped piston rod (713), the liquid storage box (717), the wedge-shaped extrusion column (716) and the moving plate (712) are symmetrically arranged in two groups along the transverse center of the grinding box (3).

7. A grinding machine for calcium carbonate production according to claim 1, characterized in that: The reciprocating vibration mechanism (8) comprises a U-shaped fixed plate (801), wherein the U-shaped fixed plate (801) is fixedly connected to the bottom of the first moving rod (707), and one end of the U-shaped fixed plate (801) away from the first moving rod (707) is fixedly connected to a second guide plate (802), and a sliding block (804) is fixedly connected to the top of the second guide plate (802), and a sliding groove fixed plate (803) is slidably connected to the surface of the sliding block (804), and the top of the sliding groove fixed plate (803) is fixedly connected to the workbench (1), and a sliding groove is provided inside the sliding groove fixed plate (803).

8. A grinding machine for calcium carbonate production according to claim 7, characterized in that: The slide groove fixing plates (803) and sliding blocks (804) are arranged in four groups distributed along the four corners of the second guide plate (802).

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