A paper pigment particle grinder

Abstract

This utility model provides a paper pigment particle grinder, relating to the technical field of grinding equipment. Specifically, it includes a pigment barrel, with a grinding shell and a base arranged sequentially from top to bottom at the bottom. A conical cylinder is installed inside the pigment barrel, passing through and fixedly connected to the bottom of the barrel. A servo motor is installed inside the conical cylinder, and a fixing rod is fixedly installed at the output end of the servo motor. Two grinding plates are arranged inside the grinding shell. This grinder achieves graded grinding through the cooperation of the upper and lower grinding plates with corresponding grinding pulp. The upper layer initially breaks down large particles, while the lower layer further refines them, achieving fine grinding more efficiently than a single structure. Simultaneously, it incorporates an annular filter plate with decreasing pore size. The upper layer removes substandard large particles for further grinding, while the lower layer finely screens the particles for secondary grinding, ensuring uniform particle size in the final pigment particles and meeting the stringent particle fineness requirements of the papermaking process.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, specifically a paper pigment particle grinder. Background Technology

[0002] In the paper industry, the fineness and uniformity of pigment particles play a crucial role in paper quality. High-quality paper requires pigments to be evenly dispersed in the fibers to achieve good color, opacity, and printability, which highly depends on efficient and precise pigment particle grinding technology.

[0003] Chinese Patent Publication No. CN210230140U discloses a granular pigment grinding machine, including a frame with an inverted U-shaped structure. A connector is located at the lower end of the frame, and a pigment bucket is located at the lower end of the connector. A first motor is located at the lower end of the pigment bucket, and a rotating shaft is located at the lower end of the first motor. Blades are mounted on the outer wall of the rotating shaft, and an agitator is located at the lower end of the blades. A protrusion structure is located at the lower end of the agitator, and side members are located on both sides of the protrusion structure. A sliding groove is provided on the outer wall of the side members, and a base plate is located at the lower end of the sliding groove. This granular pigment grinding machine uses a feed pipe at the upper end of the pigment bucket, allowing for convenient feeding of the pigment bucket. The pigment in the pigment bucket then enters the agitator through a drain pipe. The first motor drives the rotating shaft, which in turn drives the blades to grind the granular pigment.

[0004] In the existing technology, during the use of a granular pigment grinding mill, grinding is only carried out by the blades and agitator on the rotating shaft driven by the first motor. It lacks a graded grinding structure, making it difficult to gradually refine the pigment particles from coarse to fine. For larger particles or pigments with high hardness, there may be problems such as insufficient grinding and large particle size deviation, making it difficult to achieve a fine grinding effect. Therefore, we have made improvements to this and proposed a papermaking pigment granular grinding mill. Utility Model Content

[0005] The purpose of this invention is to address the problem that current particle pigment grinding machines have a single grinding method and insufficient precision.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A paper pigment particle grinder is provided, which achieves graded grinding by cooperating with upper and lower grinding plates and corresponding grinding pulp to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] A paper pigment granule grinder includes a pigment bucket. A grinding shell and a base are arranged sequentially from top to bottom at the bottom of the pigment bucket. A conical cylinder is disposed inside the pigment bucket, passing through and fixedly connected to the bottom of the pigment bucket. A servo motor is installed inside the conical cylinder, and a fixing rod is fixedly installed at the output end of the servo motor. Two grinding plates are disposed inside the grinding shell. The fixing rod passes through the two grinding plates and is rotatably connected to them. Annular filter plates are slidably connected to the outer sides of both grinding plates. The apertures of the two annular filter plates decrease sequentially from top to bottom. Two first grinding pastes and a second grinding paste are fixedly installed on the outer side of the fixing rod, above the two grinding plates.

[0010] As a preferred technical solution of this application, a limiting ring is fixedly installed on the outer side of the fixing rod, and the limiting ring is inserted into the interior of the pigment bucket and rotatably connected thereto;

[0011] As a preferred technical solution of this application, rubber gaskets are fixedly installed on the outer sides of both annular filter plates, and a plurality of rubber gaskets are movably connected to the grinding housing. A plurality of first fixing bolts are provided on the outer side of the grinding housing and on the outer side of the two grinding plates. The plurality of first fixing bolts pass through the grinding housing, the two annular filter plates and the rubber gaskets and are threadedly connected to them. The plurality of first fixing bolts are inserted into the interior of the grinding plates and are threadedly connected to them.

[0012] As a preferred technical solution of this application, an auxiliary plate is provided at the bottom of the fixing rod, and a third fixing bolt is provided on the side of the auxiliary plate away from the fixing rod. The third fixing bolt is inserted into the interior of the fixing rod and threadedly connected thereto.

[0013] As a preferred technical solution of this application, two guide plates are fixedly installed at the bottom of the inner wall of the pigment bucket, and control valves are fixedly installed at the bottom of the pigment bucket and on one side of the two guide plates. Two discharge ports that cooperate with the control valves are opened on the pigment bucket.

[0014] As a preferred technical solution of this application, side plates are fixedly installed on both sides of the bottom of the pigment bucket. Both side plates penetrate the grinding shell and are slidably connected to it. Both side plates are inserted into the interior of the pigment bucket and are slidably connected to it. Two second fixing bolts are provided on the side of the two side plates that are far apart from each other. The second fixing bolts penetrate the side plates and are threadedly connected to them. If the second fixing bolts are both inserted into the interior of the pigment bucket and are threadedly connected to it.

[0015] As a preferred technical solution of this application, a feed pipe is fixedly installed on one side of the pigment bucket, a feed port that cooperates with the feed pipe is opened on the pigment bucket, and a discharge pipe is fixedly installed at the bottom of the pigment bucket.

[0016] As a preferred technical solution of this application, the pigment bucket is provided with a transparent window, a controller is embedded in one side of the pigment bucket, the controller is electrically connected to a servo motor and two control valves, and several support legs are fixedly installed at the bottom of the pigment bucket.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In the scheme of this application:

[0019] (1) The grinder achieves graded grinding by using two grinding plates and corresponding grinding pulp. The upper layer initially breaks down large particles, while the lower layer further refines them, achieving fine grinding more efficiently than a single structure. At the same time, it is used with an annular filter plate with decreasing pore size. The upper layer screens out large particles that do not meet the standard and allows them to continue grinding, while the lower layer finely screens the particles for secondary grinding, ensuring that the final pigment particles have a uniform particle size and meeting the strict requirements of papermaking process for particle fineness.

[0020] (2) By using the side plate as the connection medium between the pigment bucket, the grinding shell and the base, the three can be closely connected. With the tightening effect of the second fixing bolt, the relative displacement of each component due to vibration during the operation of the equipment can be effectively avoided, ensuring the overall structure is stable. It can also be easily disassembled when maintenance or replacement of components is required, reducing the difficulty and time cost of equipment maintenance. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a side view sectional structural diagram of the present invention;

[0023] Figure 3 This is a partial structural diagram of the present invention;

[0024] Figure 4 This is a frontal cross-sectional view of the present invention.

[0025] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 This is a top view cross-sectional structural diagram of the present invention.

[0027] Explanation of reference numerals in the accompanying drawings: 1. Pigment container; 2. Grinding housing; 3. Base; 4. Grinding plate; 5. Annular filter plate; 6. Servo motor; 7. Fixing rod; 8. First grinding slurry; 9. Rubber gasket; 10. First fixing bolt; 11. Limiting ring; 12. Guide plate; 13. Control valve; 14. Feed pipe; 15. Feed pipe; 16. Side plate; 17. Second fixing bolt; 18. Auxiliary plate; 19. Third fixing bolt; 20. Conical cylinder; 21. Controller; 22. Second grinding slurry. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] Example 1: Please refer to the appendix of the instruction manual. Figure 1-4 A paper pigment granule grinder includes a pigment bucket 1. A grinding shell 2 and a base 3 are arranged sequentially from top to bottom at the bottom of the pigment bucket 1. A conical cylinder 20 is disposed inside the pigment bucket 1, passing through and fixedly connected to the bottom of the pigment bucket 1. A servo motor 6 is installed inside the conical cylinder 20, and a fixing rod 7 is fixedly installed at the output end of the servo motor 6. Two grinding plates 4 are disposed inside the grinding shell 2. The fixing rod 7 passes through the two grinding plates 4 and is rotatably connected to them. Annular filter plates 5 are slidably connected to the outer sides of both grinding plates 4. The aperture of the two annular filter plates 5 decreases sequentially from top to bottom. Two first grinding slurries 8 and two second grinding slurries 22 are fixedly installed on the outer side of the fixing rod 7 and above the two grinding plates 4, respectively. The distance between the two first grinding slurries 8 and one of the grinding plates 4 is greater than the distance between the two second grinding slurries 22 and the other grinding plate 4.

[0035] In this embodiment of the utility model, after the servo motor 6 is started, it drives the fixed rod 7 to rotate at high speed, thereby driving the first grinding slurry 8 and the second grinding slurry 22 to rotate synchronously. After the pigment enters the grinding housing 2 from the pigment bucket 1, it first contacts the upper grinding area: the distance between the first grinding slurry 8 and the upper grinding plate 4 is relatively large, so the larger pigment particles are initially coarsely ground; the coarsely ground pigment is screened through the upper annular filter plate 5 (with a large aperture), and the particles that do not meet the standard continue to be ground in this area, while the particles that meet the standard fall into the lower grinding area; in the lower area, the distance between the second grinding slurry 22 and the lower grinding plate 4 is relatively small, so the particles are finely ground, and then screened a second time through the lower annular filter plate 5 (with a small aperture), finally obtaining fine particles that meet the requirements.

[0036] In this embodiment of the utility model, a two-stage grinding design of "coarse grinding + fine grinding" is adopted. By the difference in the distance between the grinding slurry and the grinding plate 4, the pigment particles are graded, which is more efficient than single grinding and can accurately control the particle size. The pore size of the annular filter plate 5 decreases from top to bottom, which can selectively screen particles at different grinding stages, avoid substandard particles from being mixed into the finished product, and improve the grinding accuracy.

[0037] Example 2: Please refer to the appendix of the instruction manual. Figure 1-6 In a preferred embodiment of this utility model, a limiting ring 11 is fixedly installed on the outer side of the fixing rod 7. The limiting ring 11 is inserted into the interior of the pigment bucket 1 and rotatably connected to it.

[0038] Rubber washers 9 are fixedly installed on the outer sides of the two annular filter plates 5. Several rubber washers 9 are movably connected to the grinding housing 2. Several first fixing bolts 10 are provided on the outer side of the grinding housing 2 and on the outer side of the two grinding plates 4. Several first fixing bolts 10 pass through the grinding housing 2, the two annular filter plates 5 and the rubber washers 9 and are threaded to them. Several first fixing bolts 10 are inserted into the interior of the grinding plate 4 and are threaded to it.

[0039] An auxiliary plate 18 is provided at the bottom of the fixed rod 7. A third fixing bolt 19 is provided on the side of the auxiliary plate 18 away from the fixed rod 7. The third fixing bolt 19 is inserted into the interior of the fixed rod 7 and threadedly connected to it. The auxiliary plate 18 is slidably connected to another grinding plate 4.

[0040] Two guide plates 12 are fixedly installed on the bottom of the inner wall of pigment bucket 1. Control valves 13 are fixedly installed on the bottom of pigment bucket 1 and on one side of the two guide plates 12. Two discharge ports that cooperate with the control valves 13 are opened on pigment bucket 1.

[0041] Side plates 16 are fixedly installed on both sides of the bottom of the pigment bucket 1. Both side plates 16 penetrate the grinding shell 2 and are slidably connected to it. Both side plates 16 are inserted into the interior of the pigment bucket 1 and are slidably connected to it. Two second fixing bolts 17 are provided on the side of the two side plates 16 that are far apart from each other. The second fixing bolts 17 penetrate the side plates 16 and are threadedly connected to them. If the second fixing bolts 17 are both inserted into the interior of the pigment bucket 1 and are threadedly connected to it.

[0042] A feed pipe 15 is fixedly installed on one side of the pigment bucket 1. The pigment bucket 1 has a feed port that cooperates with the feed pipe 15. A discharge pipe 14 is fixedly installed at the bottom of the pigment bucket 1. The top of the pigment bucket 1 has an inverted conical structure and is connected to the discharge pipe 14.

[0043] A transparent window is provided on the pigment bucket 1. A controller 21 is embedded on one side of the pigment bucket 1. The controller 21 is electrically connected to the servo motor 6 and two control valves 13. Several support legs are fixedly installed at the bottom of the pigment bucket 1.

[0044] In this embodiment of the utility model, when the fixing rod 7 rotates at high speed, the limiting ring 11 rotates synchronously with it and is always embedded in the corresponding slot of the pigment bucket 1, thereby limiting the radial displacement of the fixing rod 7 through contact with the pigment bucket 1.

[0045] The rubber gasket 9 fills the gap between the annular filter plate 5 and the grinding housing 2, blocking the path of pigment leakage from the gap; the first fixing bolt 10 fastens the annular filter plate 5, the rubber gasket 9, the grinding plate 4 and the grinding housing 2 into one unit through threaded connection, ensuring that the position of each component is stable during the grinding process, and at the same time facilitating disassembly and replacement.

[0046] The auxiliary plate 18 is fixed by the third fixing bolt 19, which further improves the stability of the grinding plate 4.

[0047] The qualified pigment particles, after being screened by the lower annular filter plate 5, fall into the bottom of the pigment bucket 1 and converge towards the lower feed port under the guidance of the guide plate 12. The timing and speed of discharge are controlled by the opening and closing of the control valve 13.

[0048] The side plate 16 serves as a connection medium between the pigment bucket 1 and the grinding housing 2, connecting the pigment bucket 1 and the grinding housing 2 to the base 3, and fastening the assembly with the second fixing bolt 17.

[0049] Pigment enters pigment tank 1 through feed pipe 15. Due to its inclined surface design, the inverted conical structure at the top guides the pigment to flow naturally downward into the grinding housing 2. Finally, the pigment that has passed the grinding process is discharged through feed pipe 14.

[0050] The grinding status and remaining amount of pigment in the barrel can be directly observed through the transparent window; the controller 21 receives the operation command and automatically adjusts the speed of the servo motor 6 (to control the grinding intensity) and controls the opening and closing of the control valve 13 (to control the discharge), and the support legs keep the equipment horizontal and stable.

[0051] In this embodiment of the utility model, the limiting ring 11 effectively restrains the shaking of the fixing rod 7, ensures the stability of its rotation axis, avoids fluctuations in the distance between the grinding slurry and the grinding plate 4 due to the offset of the fixing rod 7, and ensures grinding uniformity; it also reduces the friction between the fixing rod 7 and other components, and extends the service life of the equipment.

[0052] Rubber gasket 9 enhances the sealing of the equipment, preventing pigment leakage that could lead to material waste and equipment contamination; the detachable design of the first fixing bolt 10 facilitates the replacement of annular filter plates 5 with different apertures according to grinding requirements, improving the versatility of the equipment; the multiple fixing structures ensure that there is no relative displacement of the components during grinding, guaranteeing grinding accuracy.

[0053] The guide plate 12 ensures the directional flow of pigment particles, avoids residue at the bottom of the container, and improves the material recovery rate; the control valve 13 can flexibly control the discharge, which is convenient for cooperating with subsequent processes and improving production continuity.

[0054] The alignment accuracy between the pigment bucket 1 and the grinding housing 2 can be changed by adjusting the position of the side plate 16 to adapt to different installation or maintenance needs; the tightening effect of the second fixing bolt 17 ensures the structural stability of the equipment during operation and avoids loosening of the connection due to vibration.

[0055] The inverted conical top reduces pigment residue in the bucket and improves material utilization; the independent design of the feed pipe 15 and the discharge pipe 14 enables orderly material entry and exit and avoids process chaos.

[0056] The transparent window facilitates real-time monitoring of production status and timely detection of abnormalities; the controller 21 enables automated control, reducing the intensity of manual operation and improving production accuracy and efficiency; the support legs ensure stable placement of the equipment, reduce vibration transmission during grinding, and improve operational safety.

[0057] Example 3: Please refer to the appendix of the instruction manual. Figure 2 and Figure 4 In a preferred embodiment of the present invention, a cavity is provided on the grinding housing 2, and a threaded pipe is fixedly installed on the inner wall of the grinding housing 2 and inside the cavity. Both ends of the threaded pipe pass through the grinding housing 2 and are fixedly connected thereto. A circulating cooling device is connected to both ends of the threaded pipe, and the circulating cooling device is electrically connected to the controller 21.

[0058] In this embodiment of the utility model, the heat generated during the grinding process is transferred to the cavity through the grinding shell 2. The circulating cooling device pumps the coolant into the threaded pipe, absorbs the heat, and then flows out to achieve continuous cooling. The controller 21 adjusts the cooling intensity according to the shell temperature control data.

[0059] In this embodiment of the invention, the heat generated during grinding is dissipated in a timely manner to prevent the pigment from changing its properties due to high temperature, thus ensuring product quality; wear of equipment components caused by high temperature is reduced, extending service life; and the intelligent adjustment of the controller 21 ensures that the cooling efficiency matches the grinding requirements, saving energy.

[0060] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A paper pigment particle grinder, comprising a pigment container (1), characterized in that, The bottom of the pigment bucket (1) is provided with a grinding shell (2) and a base (3) from top to bottom. The pigment bucket (1) is provided with a conical cylinder (20) inside, and the conical cylinder (20) passes through the bottom of the pigment bucket (1) and is fixedly connected to it. A servo motor (6) is installed inside the conical cylinder (20). A fixing rod (7) is fixedly installed at the output end of the servo motor (6). Two grinding plates (4) are provided inside the grinding shell (2). The fixing rod (7) passes through the two grinding plates (4) and is rotatably connected to them. An annular filter plate (5) is slidably connected to the outside of the two grinding plates (4). The aperture of the two annular filter plates (5) decreases from top to bottom. Two first grinding slurries (8) and two second grinding slurries (22) are fixedly installed on the outside of the fixing rod (7) and above the two grinding plates (4).

2. The paper pigment particle grinder according to claim 1, characterized in that, A limiting ring (11) is fixedly installed on the outside of the fixing rod (7), and the limiting ring (11) is inserted into the inside of the pigment bucket (1) and rotatably connected to it.

3. The paper pigment particle grinder according to claim 1, characterized in that, Rubber gaskets (9) are fixedly installed on the outer sides of both annular filter plates (5). Several rubber gaskets (9) are movably connected to the grinding housing (2). Several first fixing bolts (10) are provided on the outer side of the grinding housing (2) and on the outer side of the two grinding plates (4). Several first fixing bolts (10) penetrate the grinding housing (2), the two annular filter plates (5) and the rubber gaskets (9) and are threaded to them. Several first fixing bolts (10) are inserted into the interior of the grinding plate (4) and are threaded to it.

4. The paper pigment particle grinder according to claim 1, characterized in that, An auxiliary plate (18) is provided at the bottom of the fixed rod (7). A third fixing bolt (19) is provided on the side of the auxiliary plate (18) away from the fixed rod (7). The third fixing bolt (19) is inserted into the interior of the fixed rod (7) and threadedly connected to it.

5. A paper pigment particle grinder according to claim 1, characterized in that, Two guide plates (12) are fixedly installed on the bottom of the inner wall of the pigment bucket (1). A control valve (13) is fixedly installed on the bottom of the pigment bucket (1) and on one side of the two guide plates (12). Two discharge ports that cooperate with the control valves (13) are opened on the pigment bucket (1).

6. A paper pigment particle grinder according to claim 1, characterized in that, Side plates (16) are fixedly installed on both sides of the bottom of the pigment bucket (1). Both side plates (16) penetrate the grinding shell (2) and are slidably connected to it. Both side plates (16) are inserted into the interior of the pigment bucket (1) and are slidably connected to it. Two second fixing bolts (17) are provided on the side of the two side plates (16) that are far apart from each other. The second fixing bolts (17) penetrate the side plates (16) and are threadedly connected to them. If the second fixing bolts (17) are inserted into the interior of the pigment bucket (1) and are threadedly connected to it.

7. A paper pigment particle grinder according to claim 1, characterized in that, A feed pipe (15) is fixedly installed on one side of the pigment bucket (1), and a feed port that cooperates with the feed pipe (15) is opened on the pigment bucket (1). A discharge pipe (14) is fixedly installed at the bottom of the pigment bucket (1).

8. A paper pigment particle grinder according to claim 1, characterized in that, The pigment bucket (1) is provided with a transparent window. A controller (21) is embedded on one side of the pigment bucket (1). The controller (21) is electrically connected to the servo motor (6) and two control valves (13). Several support legs are fixedly installed at the bottom of the pigment bucket (1).

Images