Slurry preparation device suitable for various slurries

Abstract

The invention relates to the technical field of papermaking, in particular to a pulp preparation device suitable for various types of pulp, which comprises a machine body, and a defibering mechanism, a pulp grinding mechanism and a backflow mechanism are arranged in the machine body; the defibering mechanism is located at the top of an inner cavity of the machine body. The pulping mechanism is located below the defibering mechanism, and a grinding gap is formed between the movable disc and the fixed disc; the backflow mechanism is located below the grinding mechanism and comprises a backflow part arranged in the height direction of the machine body, the backflow part is of a hollow structure with the top end open, and a piston is arranged in the backflow part in the height direction of the machine body in a sliding mode and used for pushing slurry into the grinding gap. The defibering mechanism and the pulping mechanism are sequentially arranged in the machine body from top to bottom, so that the device can disperse raw materials containing long fibers more powerfully, the long fibers can be cut into short fibers, the flatness of the surface of produced paper is improved, and the quality of the paper is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of papermaking, and particularly to a pulp blending device applicable to various types of pulp. Background Art

[0002] A papermaking refiner, also known as a beating machine or a vertical beating machine, can crush the pulp to the required particle size to meet the requirements of papermaking production.

[0003] When the existing refiner is in use, it is usually necessary to first put the pulp raw material into the machine body, and then cooperate with the grinding of the grinding disc to process the raw material, so that the fibers of the raw material become shorter. After the pulp reaches the appropriate beating degree, it can be put into the subsequent paper production. In order to ensure good appearance of the paper, it is necessary to ensure that the beating degree of all the ground pulp reaches 59 0 SR, so as to keep the surface layer of the paper in good service performance and surface performance.

[0004] However, since the pulp used for the paper surface layer is made by dispersing and grinding waste paper pulp, softwood pulp, and hardwood pulp separately and then mixing them. The fiber lengths of waste paper fibers, softwood fibers, and hardwood pulp fibers are quite different. If not properly processed, the paper appearance and uniformity will be poor due to the too large deviation in fiber length, thus affecting the smoothness of the paper surface layer and the quality of the paper. For this reason, we have proposed a pulp blending device applicable to various types of pulp to well solve the above drawbacks. Summary of the Invention

[0005] The purpose of the present invention is to provide a pulp blending device applicable to various types of pulp to solve the problems raised in the above background art.

[0006] The present invention is achieved through the following technical solutions: A pulp blending device applicable to various types of pulp includes a machine body, and the machine body internally has a defibering mechanism, a refining mechanism, and a reflux mechanism;

[0007] Among them, the defibering mechanism is located at the top of the inner cavity of the machine body. The defibering mechanism includes a dispersing blade, and the dispersing blade is driven to rotate by a motor on the top of the outer side of the machine body;

[0008] The refining mechanism is located below the defibering mechanism. The refining mechanism includes a moving disc and a stationary disc. The moving disc is located above the stationary disc, and there is a grinding gap between the moving disc and the stationary disc;

[0009] The reflux mechanism is located below the refining mechanism. The reflux mechanism includes a reflux part arranged along the height direction of the machine body. The reflux part has a hollow interior and an open top. A piston is slidably arranged in the reflux part along the height direction of the machine body, and the piston is used to push the pulp into the grinding gap.

[0010] Optionally, a deflector plate is provided between the defibering mechanism and the pulping mechanism. The deflector plate is funnel-shaped and fixedly connected to the inner side wall of the machine body. A feeding pipe communicating the defibering mechanism and the pulping mechanism is provided at the central position of the deflector plate, and a valve is provided on the feeding pipe.

[0011] Optionally, both the top surface and the bottom surface of the moving disk are concave surfaces. A feeding hole is provided at the central position of the moving disk, and the feeding hole communicates with the grinding gap. The top surface of the fixed disk is convex.

[0012] Optionally, the top surface of the reflux part is fixedly connected to the central position of the bottom surface of the fixed disk, and the side surface of the reflux part is fixedly connected to the inner side wall of the machine body through a connecting rod. A screening and guiding mechanism is provided outside the reflux part, and the screening and guiding mechanism is used to convey the pulp with an unqualified beating degree into the reflux part.

[0013] Optionally, the screening and guiding mechanism includes a filter screen fixedly connected to the inner side wall of the machine body. The filter screen is funnel-shaped, and the inner side surface of the filter screen is fixedly connected to the outer side wall of the reflux part through a connecting part. A funnel-shaped guiding part is fixedly provided at the bottom of the connecting part. The inner side surface of the guiding part is fixedly connected to the outer side wall of the reflux part. There is a guiding gap between the guiding part and the reflux part. A communication port communicating with the guiding gap is provided on the connecting part, and a feeding hole communicating with the guiding gap is provided on the outer side wall of the reflux part. The reflux part is located at the height position where the guiding gap is located.

[0014] Optionally, a discharge hole is further provided on the outer side wall of the reflux part. The discharge hole is located below the guiding part, and the discharge hole is used to communicate the inner cavity of the machine body and the inner cavity of the reflux part.

[0015] Optionally, the height of the piston is greater than the distance between the feeding hole and the discharge hole; when the piston slides to the bottom end of the inner cavity of the reflux part, the height of the top surface of the piston is lower than the height of the discharge hole; when the piston slides to the top end of the inner cavity of the piston, the height of the bottom surface of the piston is lower than the height of the discharge hole, and the height of the top surface of the piston is higher than the height of the feeding hole.

[0016] Optionally, a through hole communicating with the inner cavity of the reflux part is provided at the central position of the fixed disk, and a closing mechanism is fixedly provided on the inner side wall of the through hole. The closing mechanism is used to control the opening and closing state of the through hole.

[0017] Optionally, the closing mechanism includes a fixing plate fixedly connected to the inner wall of the through hole on the fixed disk. A feeding hole is vertically provided on the fixing plate, and the feeding hole communicates the inner cavity of the reflux part and the grinding gap. A sealing plug is elastically connected in the feeding hole along the height direction of the machine body.

[0018] Optionally, a gear ring is fixedly sleeved on the outer side wall of the moving disc. The teeth of the gear ring are located outside the machine body. A motor is fixedly arranged outside the machine body. A driving gear is coaxially sleeved on the output shaft of the motor. The gear ring meshes with the driving gear.

[0019] Compared with the prior art, the present invention provides a pulp mixing device applicable to various types of slurries, having the following beneficial effects:

[0020] 1. By sequentially arranging a defibration mechanism and a pulp grinding mechanism from top to bottom in the machine body, the device can more effectively disperse raw materials containing long fibers, cut the long fibers into short fibers, thereby improving the flatness of the surface of the produced paper and the quality of the paper.

[0021] 2. Through the design of the hole positions on the reflux part, the user can determine the grinding and filtering times of the slurry according to needs. And a reflux mechanism and a screening and diversion mechanism are arranged below the pulp grinding mechanism, so that when the beating degree of the ground pulp reaches the standard, it can pass through the filter screen and be discharged to the outside of the machine body; while the pulp with the beating degree not reaching the standard will flow into the reflux mechanism and be conveyed to the pulp grinding mechanism again for grinding, enabling the device to be applicable to the grinding operations of various types of slurries, improving the adaptability of the device and the quality of the produced pulp. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a front sectional view of the present invention;

[0024] Figure 3 is Figure 2 an enlarged structural diagram of part A in

[0025] Figure 4 is Figure 2 an enlarged structural diagram of part B in

[0026] In the figure: 1, machine body; 2, defibration mechanism; 201, dispersing blade; 3, pulp grinding mechanism; 301, moving disc; 302, fixed disc; 4, reflux mechanism; 401, reflux part; 402, piston; 403, feed hole; 404, discharge hole; 5, guide plate; 6, screening and diversion mechanism; 601, filter screen; 602, connecting part; 603, guiding part; 604, communication port; 7, closing mechanism; 701, fixing plate; 702, material conveying hole; 703, sealing plug; 704, pushing part; 705, material squeezing hole; 8, gear ring; 9, driving gear. Detailed Embodiment

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figure 1 - Figure 4 , a pulp mixing device applicable to various types of slurries, including a machine body 1. The interior of the machine body 1 is provided with a defibering mechanism 2, a grinding mechanism 3 and a reflux mechanism 4;

[0029] Among them, the defibering mechanism 2 is located at the top of the inner cavity of the machine body 1. The defibering mechanism 2 includes a dispersing blade 201, and the dispersing blade 201 is driven to rotate by a motor at the top of the outer side of the machine body 1; so that the defibering mechanism 2 can perform the first-step defibering and dispersing operation on the pulp raw material. The defibering mechanism 2 mainly focuses on separating fibers and cutting less, and is more suitable for processing waste paper bleaching pulp boards with shorter fibers.

[0030] The grinding mechanism 3 is located below the defibering mechanism 2. The grinding mechanism 3 includes a moving disk 301 and a fixed disk 302. The moving disk 301 is located above the fixed disk 302, and there is a grinding gap between the moving disk 301 and the fixed disk 302; so that the grinding mechanism 3 can perform the second-step grinding operation on the pulp raw material, and the cutting effect of the grinding mechanism 3 on the fibers in the pulp is stronger than that of the defibering mechanism 2 on the fibers, so that the grinding mechanism 3 can perform a more effective grinding operation on raw materials with longer fibers.

[0031] The reflux mechanism 4 is located below the grinding mechanism 3. The reflux mechanism 4 includes a reflux part 401 arranged along the height direction of the machine body 1. The reflux part 401 has a hollow interior and an open top structure. A piston 402 is slidably arranged in the reflux part 401 along the height direction of the machine body 1. The piston 402 is used to push the slurry into the grinding gap, so that the device can perform one or more grinding operations on the slurry according to requirements, so that the device can be applicable to the grinding operations of various types of slurries.

[0032] Furthermore, a flow guiding plate 5 is arranged between the defibering mechanism 2 and the grinding mechanism 3. The flow guiding plate 5 is in a funnel shape, and the flow guiding plate 5 is fixedly connected to the inner side wall of the machine body 1. A feeding pipe communicating the defibering mechanism 2 and the grinding mechanism 3 is arranged at the central position of the flow guiding plate 5, and a valve is arranged on the feeding pipe, so that the dispersed slurry in the defibering mechanism 2 can flow into the grinding mechanism 3 through the feeding pipe, and the slurry in the defibering mechanism 2 can enter the grinding mechanism 3 after being fully dispersed by controlling the opening and closing of the valve.

[0033] In this embodiment, both the top surface and the bottom surface of the moving disk 301 are concave surfaces. A feeding hole is provided at the central position of the moving disk 301, and the feeding hole communicates with the grinding gap, so that the slurry can flow to the central position of the moving disk 301, and then flow into the grinding gap between the moving disk 301 and the fixed disk 302 for grinding. The top surface of the fixed disk 302 is convex, so that the top surface of the fixed disk 302 and the bottom surface of the moving disk 301 can be adapted to each other, thereby performing a grinding operation on the slurry, and enabling the ground pulp to flow down from the periphery of the fixed disk 302.

[0034] In order to enable the slurry with longer fiber length to be ground by the refining mechanism 3 multiple times, in this application, the top surface of the reflux part 401 is fixedly connected to the central position of the bottom surface of the fixed disk 302, and the side surface of the reflux part 401 is fixedly connected to the inner side wall of the machine body 1 through a connecting rod. A screening and guiding mechanism 6 is provided outside the reflux part 401. The screening and guiding mechanism 6 is used to convey the pulp with unqualified beating degree into the reflux part 401, so that the device can perform multiple grinding operations on the slurry with longer fiber length, and finally shorten the fibers in the slurry to improve the flatness and quality of the surface of the produced paper.

[0035] The screening and guiding mechanism 6 is described in detail below:

[0036] The screening and guiding mechanism 6 includes a filter screen 601 fixedly connected to the inner side wall of the machine body 1. The filter screen 601 is in a funnel shape, and the inner side surface of the filter screen 601 is fixedly connected to the outer side wall of the reflux part 401 through a connecting part 602, so that the pulp with qualified beating degree after surface pulp grinding can pass through the filter screen 601, while the pulp with unqualified beating degree will be guided to the connecting part 602 by the filter screen 601. A funnel-shaped guiding part 603 is fixedly provided at the bottom of the connecting part 602. The inner side surface of the guiding part 603 is fixedly connected to the outer side wall of the reflux part 401. There is a guiding gap between the guiding part 603 and the reflux part 401. A communication port 604 communicating with the guiding gap is provided on the connecting part 602, so that the slurry flowing to the connecting part 602 will flow into the guiding gap through the communication port 604. A feeding hole 403 communicating with the guiding gap is provided on the outer side wall of the reflux part 401. The reflux part 401 is located at the height position where the guiding gap is located, so that the slurry flowing into the guiding gap will flow into the interior of the reflux part 401 through the feeding hole 403, and then be conveyed by the piston 402 into the grinding gap in the refining mechanism 3 for multiple grinding.

[0037] In order to enable the device to switch between single grinding and multiple grinding, a discharge hole 404 is also provided on the outer side wall of the reflux part 401 in this application. The discharge hole 404 is located below the guiding part 603. The discharge hole 404 is used to communicate the inner cavity of the machine body 1 and the inner cavity of the reflux part 401, so that the slurry in the reflux part 401 can flow out of the outside of the reflux part 401 through the discharge hole 404.

[0038] Specifically, the height of the piston 402 is greater than the distance between the feed hole 403 and the discharge hole 404, so that the piston 402 can completely block and seal both the feed hole 403 and the discharge hole 404; when the piston 402 slides to the bottom end of the inner cavity of the reflux part 401, the height of the top surface of the piston 402 is lower than the height of the discharge hole 404, that is, when the bottom surface of the piston 402 contacts the inner bottom surface of the reflux part 401, the piston 402 will not block the feed hole 403 and the discharge hole 404, so that the feed hole 403 and the discharge hole 404 are opened simultaneously. At this time, the slurry flowing into the reflux part 401 will flow out of the reflux part 401 through the discharge hole 404 and finally converge with the slurry passing through the filter screen 601, so that the device performs a grinding operation. When the piston 402 slides to the top end of the inner cavity of the piston 402, the height of the bottom surface of the piston 402 is lower than the height of the discharge hole 404, and the height of the top surface of the piston 402 is higher than the height of the feed hole 403, that is, when the top surface of the piston 402 slides above the feed hole 403, the piston 402 can block both the feed hole 403 and the discharge hole 404. At this time, the piston 402 will push the slurry in the reflux part 401 upward, and the feed hole 403 is closed, so that the slurry outside the reflux part 401 will not enter the reflux part 401 again, preventing the slurry from flowing below the piston 402 and affecting the transportation of the slurry by the piston 402.

[0039] Further, a through hole communicating with the inner cavity of the reflux part 401 is provided at the central position of the fixed disk 302, and a closing mechanism 7 is fixedly provided on the inner side wall of the through hole. The closing mechanism 7 is used to control the opening and closing state of the through hole, so that the slurry in the reflux part 401 can enter the grinding gap in the grinding mechanism 3.

[0040] The following is a detailed description of the closing mechanism 7:

[0041] The closing mechanism 7 includes a fixing plate 701 fixedly connected to the inner wall of the through hole on the fixed disk 302. A material conveying hole 702 is vertically provided on the fixing plate 701. The material conveying hole 702 communicates the inner cavity of the reflux part 401 and the grinding gap. A sealing plug 703 is elastically connected in the material conveying hole 702 along the height direction of the machine body 1, so that when the sealing plug 703 is located inside the material conveying hole 702, the material conveying hole 702 is closed, and at this time, the reflux part 401 and the grinding gap in the grinding mechanism 3 are not communicated; when the sealing plug 703 moves out to the outside of the material conveying hole 702, the reflux part 401 and the grinding gap can be communicated, so that the slurry in the reflux part 401 enters the grinding gap.

[0042] To make the movement mode of the sealing plug 703 more specific, there are two upper and lower flanges on the inner side wall of the material feeding hole 702 in this application. The sealing plug 703 is located above the two flanges. A push portion 704 in an inverted T shape is fixedly provided at the bottom of the sealing plug 703. The bottom plate of the push portion 704 is slidably arranged up and down between the two flanges. And a spring is arranged vertically in the material feeding hole 702. The upper and lower ends of the spring respectively abut against the bottom surface of the upper flange in the material feeding hole 702 and the top surface of the bottom plate of the push portion 704. In the natural state, the spring is in a compressed state so that the sealing plug 703 can always be subjected to a downward pulling force, thereby enabling the sealing plug 703 to be in the material feeding hole 702 to close the material feeding hole 702. When the piston 402 moves upward to convey the slurry, the space above the piston 402 will become smaller, so that the pressure in the space above the piston 402 becomes larger. As the reflux portion 401 continues to rise, the sealing plug 703 will be subjected to a pressure effect and thus move upward until the sealing plug 703 completely moves out of the outside of the material feeding hole 702. And a plurality of material squeezing holes 705 are formed in the bottom plate of the push portion 704 so that the push portion 704 will not hinder the conveying of the slurry. At this time, the slurry in the reflux portion 401 will be gradually conveyed into the grinding gap in the grinding mechanism 3 for grinding operation again to make the beating degree of the slurry meet the standard.

[0043] Further, a gear ring 8 is fixedly sleeved on the outer side wall of the moving disk 301. The teeth of the gear ring 8 are located on the outside of the machine body 1. A motor is fixedly provided on the outside of the machine body 1. A driving gear 9 is coaxially sleeved on the output shaft of the motor. The gear ring 8 and the driving gear 9 are meshed with each other so that the moving disk 301 can be driven by the motor to rotate, thereby cooperating with the fixed disk 302 for grinding operation. And a protective cover is arranged outside the gear ring 8. The protective cover is fixedly connected to the outer side wall of the machine body 1, which can not only protect the gear ring 8 but also connect the upper and lower parts of the machine body 1 together to make the machine body 1 form a whole.

[0044] The working principle and usage process of the present invention: First, when adding waste paper bleached pulp board with shorter fibers into the machine body 1, since the fibers of the waste paper bleached pulp board are shorter and are relatively easy to beat and not suitable to be cut again, at this time, the grinding mechanism 3 is not started, and the dispersing blades 201 in the defibering mechanism 2 keep rotating so that the dispersing blades 201 can perform the operation of fiber separation on the slurry, with less fiber cutting.

[0045] When adding bleached softwood pulp boards with longer fibers into the machine body 1, at this time, both the dispersing blade 201 and the moving disk 301 keep rotating. The pulp is first separated and broken up by the dispersing blade 201, and then enters the grinding gap between the moving disk 301 and the stationary disk 302 for primary grinding. When the pulp flows onto the filter screen 601, the beating degree of the pulp still fails to meet the standard, and the pulp will flow into the reflux part 401 through the feed hole 403 along the filter screen 601. At this time, the piston 402 makes a reciprocating lifting motion above the discharge hole 404 in the reflux part 401, so as to convey the pulp upward. During the upward conveying process, the pressure in the space above the piston 402 becomes larger, so as to push the sealing plug 703 out to the outside of the material conveying hole 702, enabling the pulp to enter the grinding gap in the refining mechanism 3 through the material conveying hole 702 for secondary grinding, and finally making the beating degree of the pulp meet the standard.

[0046] When adding bleached hardwood pulp boards into the machine body 1, since the fiber length of the bleached hardwood pulp boards is shorter than that of the bleached softwood pulp boards but longer than that of the waste paper bleached pulp boards, therefore, only one-time grinding of the pulp is required. At this time, the dispersing blade 201 and the moving disk 301 keep rotating. After the pulp is separated by the dispersing blade 201, it is added into the grinding gap in the refining mechanism 3 for primary grinding. Then the pulp flows onto the filter screen 601 and falls through the filter screen 601; and at this time, the piston 402 is located below the discharge hole 404, that is, both the feed hole 403 and the discharge hole 404 are in an open state, so that part of the pulp flowing into the reflux part 401 will flow out of the discharge hole 404 again to the outside of the reflux part 401, and finally converge with the pulp falling from the filter screen 601, and then flow out of the bottom of the machine body 1 into the pulp pool outside the machine body 1.

[0047] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slurry preparation device suitable for various types of slurries, comprising a body, characterized in that: The machine body is provided with a de-slurrying mechanism, a pulping mechanism and a reflux mechanism; Wherein, the decongestion mechanism is located at the top of the inner cavity of the machine body, and the decongestion mechanism includes dispersion leaves, and the dispersion leaves are driven to rotate by a motor at the top of the outer side of the machine body; The refining mechanism is located below the deflaking mechanism, and comprises a moving plate and a fixed plate, wherein the moving plate is located above the fixed plate, and a grinding gap is provided between the moving plate and the fixed plate; The reflux mechanism is located below the refining mechanism and includes a reflux portion arranged along the height direction of the machine body. The reflux portion is hollow inside and has an open top. A piston is slidably arranged in the reflux portion along the height direction of the machine body. The piston is used to push the slurry into the grinding gap.

2. A slurry preparation device suitable for multiple types of slurries according to claim 1, characterized in that: A guide plate is provided between the deflaking mechanism and the refining mechanism. The guide plate is funnel-shaped and fixedly connected to the inner wall of the machine body. A feed pipe connecting the deflaking mechanism and the refining mechanism is provided at the center of the guide plate, and a valve is provided on the feed pipe.

3. A slurry preparation device suitable for multiple types of slurries according to claim 1, characterized in that: The top surface and the bottom surface of the movable disk are both concave, a feeding hole is opened at the center of the movable disk, the feeding hole is connected with the grinding gap, and the top surface of the fixed disk is convex.

4. A slurry preparation device suitable for various types of slurries according to claim 1, characterized in that: The top surface of the reflux part is fixedly connected to the center position of the bottom surface of the fixed plate, and the side surface of the reflux part is fixedly connected to the inner wall of the machine body through a connecting rod. A screening and guide mechanism is provided on the outer side of the reflux part, and the screening and guide mechanism is used to transport pulp with unsatisfactory beating degree into the reflux part.

5. A slurry preparation device applicable to various types of slurries according to claim 4, characterized in that: The screening and diversion mechanism includes a filter screen fixedly connected to the inner wall of the body, the filter screen is funnel-shaped, and the inner side surface of the filter screen is fixedly connected to the outer wall of the reflux part through a connecting part, a funnel-shaped guide part is fixedly provided at the bottom of the connecting part, the inner side surface of the guide part and the outer wall of the reflux part are fixedly connected, a diversion gap is provided between the guide part and the reflux part, a connecting port connected to the diversion gap is provided on the connecting part, a feed hole connected to the diversion gap is provided on the outer wall of the reflux part, and the reflux part is located at the height position where the diversion gap is located.

6. A slurry preparation device applicable to various types of slurries according to claim 5, characterized in that: A discharge hole is also provided on the outer wall of the reflux portion, and the discharge hole is located below the guide portion. The discharge hole is used to connect the inner cavity of the machine body and the inner cavity of the reflux portion.

7. A slurry preparation device applicable to various types of slurries according to claim 6, characterized in that: The height of the piston is greater than the distance between the feed hole and the discharge hole; when the piston slides to the bottom end of the reflux portion inner cavity, the height of the piston top surface is lower than the height of the discharge hole; when the piston slides to the top end of the piston inner cavity, the height of the piston bottom surface is lower than the height of the discharge hole, and the height of the piston top surface is higher than the height of the feed hole.

8. The slurry preparation device applicable to various types of slurries according to claim 1, characterized in that: A through hole connected to the inner cavity of the reflux part is opened at the center of the fixed disk, and a closing mechanism is fixedly provided on the inner side wall of the through hole, and the closing mechanism is used to control the switch state of the through hole.

9. A slurry preparation device applicable to various types of slurries according to claim 8, characterized in that: The sealing mechanism comprises a fixing plate fixedly connected to the inner wall of the through hole on the fixed plate, a feeding hole is vertically opened on the fixing plate, the feeding hole connects the inner cavity of the reflux part and the grinding gap, and a sealing plug is elastically connected in the feeding hole along the height direction of the machine body.

10. The slurry preparation device applicable to various types of slurries according to claim 1, characterized in that: The outer wall of the moving plate is fixedly sleeved with a gear ring, the teeth of the gear ring are located on the outside of the body, a motor is fixedly arranged on the outside of the body, a driving gear is coaxially sleeved on the output shaft of the motor, and the gear ring is meshed with the driving gear.

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