Humic acid preparation raw material grinding device

Abstract

The utility model relates to humic acid processing equipment technical field, concretely relates to a kind of humic acid preparation raw material powder grinding device, including powder grinding machine body, roll press roller, multifunctional arc work plate and elastic material cleaning roller;Roll press roller is horizontally installed in powder grinding machine body, is rotated by motor drive, and several axial grooves are opened on the outer cylindrical surface of roll press roller;Multifunctional arc work plate is semicircular, and is arranged below roll press roller;The utility model is sequentially divided into roll press pressure-bearing area and broken cake screening area by setting multifunctional arc work plate along the direction of rotation, and conical broken cake nail is arranged in the inner arc surface of broken cake screening area, and conical screening hole of small upper and large lower is opened between broken cake nail, so that material cake is first pierced and torn by broken cake nail, fine powder immediately smoothly falls from conical hole, and coarse particle is blocked to continue to grind, realizes broken cake screening integration, effectively solves the technical problem of material cake plugging screen hole.

Description

Technical Field

[0001] This utility model relates to the technical field of humic acid processing equipment, specifically to a grinding device for producing raw materials for humic acid. Background Technology

[0002] Humic acid, as an important organic raw material, is widely used in agriculture, environmental protection, and medicine. However, its raw ore is often in lumps and contains high moisture and viscous components, requiring crushing and grinding to a certain fineness before it can be used for subsequent extraction or processing. However, traditional grinding equipment is prone to problems such as material adhesion, screen clogging, and inability to disperse the crushed cake when processing these high-moisture, high-viscosity raw materials, severely impacting production efficiency and product quality. Therefore, there is an urgent need for a specialized grinding device capable of continuous grinding, automatic material cleaning, and effective cake breaking and graded discharge.

[0003] Most existing humic acid raw material grinding equipment draws inspiration from ordinary Raymond mills, hammer crushers, or double-roll mills. For example, a published patent uses a pair of opposing rotating crushing rollers with a bottom arc-shaped screen plate. The material is crushed by the extrusion force between the roller surface and the screen plate. Fine powder falls through the screen holes, while coarse material is returned to the rollers for further crushing. This type of equipment has a simple structure and strong continuous operation capability.

[0004] However, the existing technical solutions have the following drawbacks in actual operation: 1. Humic acid raw materials are easily crushed into dense cakes. Ordinary arc screen plates only have screening function and cannot actively break up the cakes, resulting in fine powder being sealed inside the cakes and unable to be screened out in time. At the same time, cake-shaped materials are easy to clog the screen holes, causing a sharp drop in screening efficiency or even jamming of the whole machine. 2. After long-term processing of sticky and wet materials, the grooves or patterns on the surface of the rolling roller will gradually fill with compacted material, lose their gripping ability, and cause the roller surface to slip and grinding to be interrupted. However, the existing technology lacks an effective automatic cleaning structure, which often requires frequent machine shutdowns for manual cleaning, seriously affecting the continuity of production. Utility Model Content

[0005] This utility model provides a grinding device for raw materials in humic acid production, mainly to solve the technical problem in the prior art where the arc-shaped sieve plate relies solely on gravity or slight vibration to allow fine powder to pass through, failing to actively break up the compacted material cake, resulting in material cake clogging the sieve holes and preventing fine powder from falling. To solve the above technical problem, this utility model provides the following technical solution: A grinding device for producing raw materials for humic acid includes a grinding mill body, a pressing roller, a multi-functional arc-shaped working plate, and an elastic cleaning roller. The pressing roller is horizontally installed inside the grinding mill body and is driven to rotate by a motor. Several axial grooves are formed on the outer surface of the pressing roller. The multi-functional arc-shaped working plate is semi-circular and located below the pressing roller. A grinding gap is left between the inner wall of its arc surface and the outer surface of the pressing roller. The multi-functional arc-shaped working plate is divided into a pressing and bearing area and a cake-breaking screening area along the arc direction. Along the rotation direction of the pressing roller, the pressing and bearing area is set before the cake-breaking screening area. The elastic cleaning roller is connected to the grinding mill body through an elastic support mechanism.

[0006] As a preferred embodiment, the compaction bearing area is a solid arc plate without holes, and the inner arc surface of the compaction bearing area is provided with a number of grinding protrusions.

[0007] As a preferred embodiment, the cake-breaking sieve section is provided with sieving holes; the inner arc surface of the cake-breaking sieve section is also provided with cake-breaking nails, the cake-breaking nails are conical protrusions, the sieving holes are distributed in the area between the cake-breaking nails, the sieve holes are conical holes with smaller tops and larger bottoms, and a safety gap is left between the top of the cake-breaking nails and the outer circular surface of the rolling roller.

[0008] As a preferred embodiment, the axial groove has a trapezoidal cross-section, and several axial grooves are evenly distributed along the circumference of the rolling roller.

[0009] As a preferred embodiment, the elastic cleaning roller is installed on the side of the rolling roller, and the roller surface of the elastic cleaning roller is provided with a plurality of trapezoidal protrusions. Under the action of elastic force, the trapezoidal protrusions are pressed into the axial groove of the rolling roller and roll in contact with it.

[0010] As a preferred embodiment, the elastic support mechanism includes a connecting rod, a hinge seat, and a compression spring. One end of the connecting rod is rotatably connected to the roller shaft of the elastic cleaning roller, and the other end is hinged to the mill body through the hinge seat. The compression spring is disposed between the connecting rod and the mill body, with one end of the compression spring abutting against the connecting rod and the other end abutting against the inner wall of the mill body.

[0011] As a preferred embodiment, a supporting rib is fixedly connected between the outer arc surface of the compaction bearing zone and the grinding mill body.

[0012] As a preferred embodiment, the multifunctional arc-shaped working plate is fixedly connected to both sides with connecting wings, and the grinding mill body is welded to both sides with two sets of connecting ears, and the connecting wings are fixedly connected to the connecting ears by bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In this humic acid production raw material grinding device, a multi-functional arc-shaped working plate is set up, which is divided into a grinding and bearing zone and a cake breaking and screening zone along the rotation direction. Conical cake breaking nails are set on the arc surface of the cake breaking and screening zone, and conical screening holes with smaller tops and larger bottoms are opened between the cake breaking nails. This allows the cake to be pierced and torn by the cake breaking nails first, and the fine powder immediately falls smoothly from the conical holes, while the coarse particles are blocked and continue to be ground. This realizes the integration of cake breaking and screening, and effectively solves the technical problem of cake clogging the screen holes.

[0014] 2. In this humic acid raw material grinding device, an elastic cleaning roller is set next to the grinding roller, and a trapezoidal protrusion is set on the surface of the cleaning roller to cooperate with the trapezoidal axial groove of the grinding roller. The trapezoidal protrusion is pressed into the groove and rolled in contact by a compression spring. The material adhering to the groove is automatically scraped out with each rotation. At the same time, the elastic support mechanism can retreat and avoid when encountering hard foreign objects, which not only ensures the continuity of cleaning, but also protects the roller surface, and completely solves the technical problems of groove blockage and slippage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the multifunctional arc-shaped working plate structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the cake-breaking screen of this utility model; Figure 5 This is a schematic diagram of the elastic cleaning roller area structure of this utility model.

[0016] The meanings of the labels in the diagram are as follows: 100. Grinding mill body; 110. Compressing roller; 111. Axial groove; 120. Multifunctional arc-shaped working plate; 121. Compressing pressure zone; 122. Cake breaking and screening zone; 123. Grinding protrusion; 124. Screening hole; 125. Cake breaking nail; 126. Support rib; 127. Connecting wing; 130. Connecting ear; 140. Elastic cleaning roller; 141. Trapezoidal protrusion; 142. Connecting rod; 143. Hinge seat; 144. Compression spring. Detailed Implementation

[0017] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] Therefore, addressing the aforementioned technical problem that the arc-shaped sieve plate relies solely on gravity or slight vibration to allow fine powder to pass through, failing to actively break up the compacted material cake, leading to material cake clogging the sieve holes and preventing fine powder from falling, this utility model discloses a grinding device for humic acid production raw materials, referencing... Figure 1 - Figure 5 As shown, the mill includes a grinding mill body 100, a grinding roller 110, a multi-functional arc-shaped working plate 120, and an elastic cleaning roller 140. The grinding roller 110 is horizontally installed inside the grinding mill body 100 and is driven to rotate by a motor. Several axial grooves 111 are formed on the outer circular surface of the grinding roller 110. The multi-functional arc-shaped working plate 120 is semi-circular and is located below the grinding roller 110. A grinding gap is left between the inner wall of its arc surface and the outer circular surface of the grinding roller 110. The multi-functional arc-shaped working plate 120 is divided into a grinding and bearing area 121 and a cake-breaking screen area 122 along the arc direction. Along the rotation direction of the grinding roller 110, the grinding and bearing area 121 is set before the cake-breaking screen area 122. The raw material is first brought into the grinding and bearing area 121, and the outer circular surface of the grinding roller 110... The axial groove 111 effectively grips the material, and together with the crushing and pressing zone 121, it squeezes and tears the raw material to complete the initial crushing. Then, the material continues to move with the roller surface to the cake-breaking screening zone 122, where the cake-shaped material is torn and broken apart. Fine material is separated and falls off in time, while coarse particles remain on the arc surface and are carried back by the crushing roller 110 for further grinding. The elastic cleaning roller 140 is connected to the mill body 100 through an elastic support mechanism. The trapezoidal convex strips 141 on the roller surface are pressed into the axial groove 111 and rolled to clean the material adhering to the groove. This solution integrates crushing, cake breaking, screening and self-cleaning into one unit, with good grinding continuity. It can effectively prevent blockage caused by the stickiness of humic acid raw materials, and significantly improve the grinding efficiency and output quality.

[0019] For the compaction zone 121, the compaction zone 121 is a solid arc plate without holes. The inner arc surface of the compaction zone 121 is provided with several grinding protrusions 123. During operation, the raw material is squeezed between the compaction roller 110 and the compaction zone 121, and is also subjected to the grinding action of the grinding protrusions 123, which makes the blocky raw material quickly break into small particles and form a cake. The compaction zone 121 and the supporting rib plate 126 fixed to the outer arc surface work together to bear the force. It has sufficient rigidity and can withstand strong crushing pressure without deformation, providing a cake of uniform thickness for subsequent cake breaking and screening.

[0020] The cake-breaking sieve section 122 integrates cake-breaking and sieving functions. The cake-breaking sieve section 122 has sieving holes 124. Cake-breaking nails 125 are also provided on the inner arc surface of the cake-breaking sieve section 122. The cake-breaking nails 125 are conical protrusions. The sieving holes 124 are distributed in the area between the cake-breaking nails 125. The shape of the sieving holes 124 is a conical hole with a smaller top and a larger bottom. When the crushing roller 110 pushes the cake to this point, the conical protrusions of the cake-breaking nails 125 will pierce and tear the cake, releasing the compacted fine powder and letting it fall into the sieving holes 124. The conical hole structure with a smaller top and a larger bottom can effectively prevent material from getting stuck in the holes. Coarse particles are blocked on the arc surface and continue to be crushed. A safety gap is left between the top of the cake-breaking nails 125 and the outer circular surface of the crushing roller 110, which not only ensures the cake-breaking effect but also prevents hard metal contact and protects the roller surface of the crushing roller 110.

[0021] Regarding the rolling roller 110, the axial grooves 111 evenly opened on its outer circular surface have a trapezoidal cross section. This trapezoidal axial groove 111 increases the roller surface's ability to grip and carry raw materials, preventing materials from slipping on the arc surface and improving grinding and conveying efficiency. On the other hand, the trapezoidal groove opening, which is wider at the top and narrower at the bottom, matches the trapezoidal protrusions 141 on the elastic cleaning roller 140, providing an ideal matching profile for subsequent rolling cleaning, making cleaning more thorough and less prone to material jamming.

[0022] The elastic cleaning roller 140 is installed on the side of the grinding roller 110. The roller surface of the elastic cleaning roller 140 is provided with several trapezoidal protrusions 141. Under the action of elastic force, the trapezoidal protrusions 141 are pressed into the axial grooves 111 of the grinding roller 110 and roll in contact with them. Every time the grinding roller 110 rotates once, the trapezoidal protrusions 141 are sequentially embedded into each axial groove 111 and then moved out, scraping out the material adhering to the grooves, so that the grooves are always kept clean. This automatic cleaning action avoids frequent manual shutdowns for cleaning, ensuring the continuous and stable grinding process, and is especially suitable for processing easily adhering raw materials such as humic acid.

[0023] In the specific structure of the elastic support mechanism, the elastic support mechanism includes a connecting rod 142, a hinge seat 143, and a compression spring 144. One end of the connecting rod 142 is rotatably connected to the roller shaft of the elastic cleaning roller 140, and the other end is hinged to the mill body 100 through the hinge seat 143. The compression spring 144 is located between the connecting rod 142 and the mill body 100. One end of the compression spring 144 abuts against the connecting rod 142, and the other end abuts against the inner wall of the mill body 100. During normal operation, the elastic force of the compression spring 144 makes the elastic cleaning roller 140 reliably press against the grinding roller 110. Once a hard foreign object is encountered or the material is excessively accumulated, the trapezoidal protrusion 141 will compress the spring 144, causing the entire cleaning roller to slightly retract around the hinge seat 143, achieving elastic avoidance, effectively preventing jamming or damage to the groove and roller surface, and extending the service life of the device.

[0024] In terms of structural support, a support rib plate 126 is fixed between the outer arc surface of the rolling pressure zone 121 and the mill body 100, so that the rolling pressure zone 121 can maintain the stability of the arc surface shape when subjected to high rolling pressure, ensuring the uniformity of the grinding gap between the rolling roller 110 and the arc surface, which is very beneficial to improving the consistency of the output fineness.

[0025] The overall installation of the multi-functional arc-shaped working plate 120 relies on the connecting wings 127 fixedly connected to both sides of the multi-functional arc-shaped working plate 120. Two sets of connecting ears 130 are welded to both sides of the grinding mill body 100. The connecting wings 127 are fixedly connected to the connecting ears 130 by bolts. This connection method is structurally reliable and can achieve quick disassembly and assembly. When the crushing pressure zone 121 or the shredder section 122 is worn, the entire multi-functional arc-shaped working plate 120 can be replaced simply by removing the bolts, making maintenance very convenient.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grinding device for producing raw materials for humic acid, characterized in that: The mill includes a grinding mill body (100), a grinding roller (110), a multi-functional arc-shaped working plate (120), and an elastic cleaning roller (140). The grinding roller (110) is horizontally installed inside the grinding mill body (100) and is driven to rotate by a motor. Several axial grooves (111) are provided on the outer circular surface of the grinding roller (110). The multi-functional arc-shaped working plate (120) is semi-circular and is located below the grinding roller (110). A grinding gap is left between the inner wall of its arc surface and the outer circular surface of the grinding roller (110). The multi-functional arc-shaped working plate (120) is divided into a grinding and bearing area (121) and a cake breaking and screening area (122) along the arc direction. Along the rotation direction of the grinding roller (110), the grinding and bearing area (121) is set before the cake breaking and screening area (122). The elastic cleaning roller (140) is connected to the grinding mill body (100) through an elastic support mechanism.

2. The humic acid raw material grinding device according to claim 1, characterized in that: The rolling bearing area (121) is a solid arc plate without holes, and the inner arc surface of the rolling bearing area (121) is provided with a number of grinding protrusions (123).

3. The humic acid raw material grinding device according to claim 1, characterized in that: The sieve section (122) is provided with sieve holes (124); the inner arc surface of the sieve section (122) is also provided with sieve nails (125), the sieve nails (125) are conical protrusions, the sieve holes (124) are distributed in the area between the sieve nails (125), the sieve holes (124) are conical holes with smaller tops and larger bottoms, and a safety gap is left between the top of the sieve nails (125) and the outer circular surface of the rolling roller (110).

4. The humic acid raw material grinding device according to claim 1, characterized in that: The axial groove (111) has a trapezoidal cross section, and several axial grooves (111) are evenly distributed along the circumference of the rolling roller (110).

5. The humic acid raw material grinding device according to claim 1, characterized in that: The elastic cleaning roller (140) is installed on the side of the rolling roller (110). The roller surface of the elastic cleaning roller (140) is provided with a number of trapezoidal protrusions (141). Under the action of elastic force, the trapezoidal protrusions (141) are pressed into the axial groove (111) of the rolling roller (110) and roll in contact with it.

6. The humic acid raw material grinding device according to claim 1, characterized in that: The elastic support mechanism includes a connecting rod (142), a hinge seat (143), and a compression spring (144). One end of the connecting rod (142) is rotatably connected to the roller shaft of the elastic cleaning roller (140), and the other end is hinged to the mill body (100) through the hinge seat (143). The compression spring (144) is disposed between the connecting rod (142) and the mill body (100). One end of the compression spring (144) abuts against the connecting rod (142), and the other end abuts against the inner wall of the mill body (100).

7. The humic acid raw material grinding device according to claim 1, characterized in that: A supporting rib plate (126) is fixed between the outer arc surface of the rolling and bearing area (121) and the grinding mill body (100).

8. The humic acid raw material grinding device according to claim 1, characterized in that: The multifunctional arc-shaped working plate (120) has connecting wings (127) fixedly connected to both sides, and two sets of connecting ears (130) are welded to both sides of the grinding mill body (100). The connecting wings (127) are fixedly connected to the connecting ears (130) by bolts.

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