Crushing and grinding device

Abstract

The utility model relates to the technical field of grinding devices, in particular to a crushing and grinding device. The crushing and grinding device comprises a blanking hopper, two grinding rollers and a receiving hopper, the crushing and grinding device further comprises a coarse particle grinding distributor and a coarse hopper; the coarse particle grinding distributor is arranged between the two grinding rollers and the material receiving hopper and comprises two material distributing assemblies, the two material distributing assemblies are correspondingly arranged at the two ends of the two grinding rollers respectively, and each material distributing assembly comprises a partition plate; the coarse hopper is arranged on the outer side and below the coarse particle grinding distributor and used for collecting coarse materials separated by the two partition plates. Through the arrangement of the coarse particle grinding distributor and the coarse hopper, materials with large particle sizes and materials with small particle sizes can be separated, the separated coarse materials can be collected and ground again, the fineness of the materials is improved, the overall structure is simple, the cost is low, and resource waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding devices, and particularly relates to a crushing and grinding device. Background Art

[0002] In the production process of titanium dioxide, the calcined materials need to be crushed and ground before entering the next surface coating process. The coating quality depends on the particle size of the materials. The finer the particle size, the better the coating quality after coating.

[0003] When the existing roll pressing and grinding device grinds the calcined materials, the extrusion force and shear force generated by the relative movement of two grinding rolls are used to crush the massive titanium dioxide. The situation is that the materials near the middle position of the grinding rolls are crushed well with smaller particle sizes, while the materials near the two ends of the grinding rolls are coarser and do not meet the requirements.

[0004] The existing solution is to grind the materials twice or multiple times, or set two sets of grinding components to grind together, such as a fine grinding mill provided by the application number CN104437730A, so that the materials meet the required standards.

[0005] However, this grinding method for improving the fineness of materials inevitably grinds the materials that have already met the fineness requirements again, resulting in over-grinding and increasing costs. Summary of the Utility Model

[0006] In view of this, the utility model provides a crushing and grinding device, which can at least solve the technical problems of poor grinding effect of the existing grinding device, easy over-grinding and increased costs.

[0007] A crushing and grinding device of the utility model includes a feeding hopper, two grinding rolls and a receiving hopper. The feeding hopper is used for feeding materials. The two grinding rolls are arranged below the feeding hopper and are used for grinding the materials falling from the feeding hopper when rotating relatively. The receiving hopper is used for receiving the materials ground by the two grinding rolls; the crushing and grinding device further includes a coarse particle separator and a coarse material hopper; the coarse particle separator is arranged between the two grinding rolls and the receiving hopper and includes two separating components. The two separating components are respectively arranged at the two ends of the two grinding rolls. Each separating component includes a partition plate. Each partition plate extends along a first direction and is arranged at an angle relative to the horizontal plane. The first direction is a horizontal direction perpendicular to the axial direction of the grinding roll; the coarse material hopper is arranged outside and below the coarse particle separator and is used for collecting the coarse materials separated by the two partition plates.

[0008] In some embodiments, the two partition plates are symmetrically arranged on both axial sides of the grinding roll. The distance between the two partition plates is greater than half of the length of the grinding roll and less than the length of the grinding roll.

[0009] In some embodiments, the material distributing assembly further includes an angle adjusting member for adjusting the inclination angle of the partition plate. The angle adjusting member includes a plate shaft and a bushing; the plate shaft is installed at both ends of the partition plate, the bushing is installed on the material receiving hopper, and the plate shaft is rotatably inserted into the bushing.

[0010] In some embodiments, the angle adjusting member further includes a horizontal rod connected to the two plate shafts and coaxially arranged with the two plate shafts, and a control rod installed on the horizontal rod. By controlling the control rod, the horizontal rod can be controlled to rotate around the axis of the bushing.

[0011] In some embodiments, the control rod is installed at the end of the horizontal rod, perpendicular to the extending direction of the horizontal rod, and correspondingly arranged with the partition plate in the first direction.

[0012] In some embodiments, the material distributing assembly further includes a positioning member for restricting the placement angle of the partition plate; the positioning member includes an adjusting rod, a limiting plate and an adjusting nut. The adjusting rod is arranged in the second direction, and the second direction is perpendicular to the first direction on the horizontal plane; the two ends of the adjusting rod are respectively a first end and a second end, and the first end is rotatably installed on the control rod around a reference axis, and the reference axis is in the first direction; the limiting plate is fixedly arranged, and the second end of the adjusting rod is detachably connected to the limiting plate through a connecting member.

[0013] In some embodiments, there are two limiting plates for each positioning member. The two limiting plates are arranged vertically at intervals in the first direction, and the second end of the adjusting rod can be inserted between the two limiting plates; the second end of the adjusting rod is provided with an external thread, and the connecting member includes two adjusting nuts that cooperate with the external thread on the adjusting rod. The outer diameters of the two adjusting nuts are larger than the distance between the two limiting plates, and the two adjusting nuts are on both sides of the two limiting plates in the second direction.

[0014] In some embodiments, there is one limiting plate for each positioning member. The limiting plate is arranged vertically, and a limiting groove is arranged along the vertical direction of the limiting plate; a strip-shaped groove penetrating in the first direction is arranged along the extending direction of the adjusting rod. The adjusting member includes a pin that can be inserted into the strip-shaped groove and the limiting groove, and a locking nut that cooperates with the pin to fix the adjusting rod and the limiting plate.

[0015] In some embodiments, a hinge seat is arranged on the control rod, a pin shaft hole is arranged at the first end of the adjusting rod, and a pin shaft rotatably connected to the hinge seat is inserted into the pin shaft hole.

[0016] In some embodiments, the upper part of the coarse material hopper cooperates with the two partition plates to form two feeding ports, and the two feeding ports are communicated with the discharging port below the coarse material hopper.

[0017] The beneficial effects of the present utility model are as follows: By providing a coarse particle distributor and a coarse material hopper, the application can separate materials with larger particle sizes from those with smaller particle sizes, collect the separated coarse materials and re-grind them, improving the fineness of the materials. The overall structure is simple, the cost is low, and over-grinding will not occur. Among them, compared with the prior art, the coarse particle distributor has a small device volume and no noise; it is convenient for inspection and maintenance, and the maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other embodiments can also be obtained based on these drawings.

[0019] Figure 1 The front view of an embodiment of the crushing and grinding device provided by the present utility model;

[0020] Figure 2 The side view of an embodiment of the crushing and grinding device provided by the present utility model;

[0021] Figure 3 The front view of a material distribution component provided by the present utility model;

[0022] Figure 4 The top view of a material distribution component provided by the present utility model.

[0023] Description of the reference numerals in the drawings:

[0024] 1, feeding hopper; 2, grinding roller; 3, partition plate; 4, control rod; 5, receiving hopper; 6, coarse material hopper; 7, bushing; 8, plate shaft; 9, adjusting rod; 10, limiting plate; 11, adjusting nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to specific embodiments and the accompanying drawings.

[0026] It should be noted that all the expressions using "first" and "second" in the embodiments of the present utility model are used to distinguish two entities or parameters with the same name but different identities. It can be seen that "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present utility model. This will not be further explained in the subsequent embodiments.

[0027] The present utility model provides a crushing and grinding device, as shown in Figure 1 and Figure 2As shown in the figure, it includes a blanking hopper 1, two grinding rollers 2 and a material receiving hopper 5. The blanking hopper 1 is used for feeding materials. The two grinding rollers 2 are arranged below the blanking hopper 1 and are used for grinding the materials falling from the blanking hopper 1 when rotating relatively. The material receiving hopper 5 is used for receiving the materials ground by the two grinding rollers 2. Specifically, the center of the material receiving hopper 5 is opposite to the center position of the gap between the two grinding rollers 2, and the upper width of the material receiving hopper 5 is smaller than the length of the grinding roller 2 to receive the finely ground materials. The materials received by the fine material receiving hopper 5 can be directly used for the next process without re-grinding. The crushing and grinding device also includes a coarse particle distributor and a coarse material hopper 6. The coarse particle distributor is arranged between the two grinding rollers 2 and the material receiving hopper 5 and includes two distribution components. The two distribution components are respectively arranged at both ends of the two grinding rollers 2. Each distribution component includes a partition plate 3. Each partition plate 3 extends in the first direction and is arranged at an angle relative to the horizontal plane. The first direction is the horizontal direction perpendicular to the axial direction of the grinding roller 2 and is used for separating the materials falling from near the end of the grinding roller 2 from the materials falling from near the middle of the grinding roller 2. The separated materials are coarse materials with larger particle sizes. The coarse material hopper 6 is arranged outside and below the coarse particle distributor and is used for collecting the coarse materials separated by the two partition plates 3. The collected coarse materials are returned to the blanking hopper 1 for re-grinding to improve the fineness of the materials.

[0028] Compared with the prior art, the utility model can separate materials with larger particle sizes from materials with smaller particle sizes by setting the coarse particle distributor and the coarse material hopper 6, and can collect and re-grind the separated coarse materials to improve the fineness of the materials. The overall structure is simple, the cost is low, and no resource waste will be caused. Among them, compared with the prior art, the coarse particle distributor has a small device volume and no noise; it is convenient for overhaul and maintenance, and the maintenance cost is low.

[0029] In some embodiments, as Figure 1 and Figure 2 shown, the partition plate 3 is a rectangular steel plate made of 304 stainless steel. The two partition plates 3 are symmetrically arranged on both axial sides of the grinding roller 2. The distance between the two partition plates 3 is greater than half of the length of the grinding roller 2 and less than the length of the grinding roller 2.

[0030] In some embodiments, as Figure 3 and Figure 4 shown, the distribution component further includes an angle adjusting member for adjusting the inclination angle of the partition plate 3. The angle adjusting member includes a plate shaft 8 and a shaft sleeve 7. The plate shaft 8 is installed at both ends of the partition plate 3, and the shaft sleeve 7 is installed on the material receiving hopper 5. The plate shaft 8 is rotatably inserted into the shaft sleeve 7. By adjusting the inclination angle of the partition plate 3, the gap width between the two grinding rollers 2 can be adapted, and the coarse materials with appropriate particle sizes can be separated from the materials, with a wide range of applications. Specifically, the shaft sleeve 7 is a round tube made of 304 stainless steel and is welded to the material receiving hopper 5. The material of the plate shaft 8 is also 304 stainless steel.

[0031] In some embodiments, the angle adjusting member further includes a horizontal rod connected to the two plate shafts 8 and coaxially arranged with the two plate shafts 8, and a control rod 4 mounted on the horizontal rod. By controlling the control rod 4, the horizontal rod can be controlled to rotate around the axis of the bushing 7, thereby adjusting the angle of the partition plate 3, and the operation is simple and convenient. Specifically, the horizontal rod and the two plate shafts 8 are integrally formed.

[0032] In some embodiments, the control rod 4 is mounted at the end of the horizontal rod, perpendicular to the extending direction of the horizontal rod, and correspondingly arranged with the partition plate 3 in the first direction, so as to facilitate confirming and observing the inclination angle of the partition plate 3.

[0033] In some embodiments, the material distribution assembly further includes a positioning member for restricting the placement angle of the partition plate 3. The positioning member includes an adjusting rod 9, a limiting plate 10 and an adjusting nut 11. The adjusting rod 9 is arranged along the second direction, and the second direction is perpendicular to the first direction on the horizontal plane. The two ends of the adjusting rod 9 are respectively a first end and a second end. The first end is rotatably mounted on the control rod 4 around a reference axis, and the reference axis is in the first direction; the limiting plate 10 is fixedly arranged, and the second end of the adjusting rod 9 is detachably connected to the limiting plate 10 through a connecting member. When the angle of the partition plate 3 changes, the angle between the adjusting rod 9 and the partition plate 3 also changes. The adjusting rod 9 rotates around the reference axis relative to the partition plate 3, and the position of its second end relative to the limiting plate 10 changes adaptively in both the horizontal and vertical directions. After the angle of the partition plate 3 is determined, the adjusting rod 9 is fixedly connected to the limiting plate 10 by using the connecting member, so as to keep the partition plate 3 at a preset angle. Among them, the material of the adjusting rod 9 is 304 stainless steel, and the material of the limiting plate 10 is carbon steel.

[0034] In some embodiments, as Figure 4 shown, there are two limiting plates 10 for each positioning member. The two limiting plates 10 are arranged vertically at intervals in the first direction, and the second end of the adjusting rod 9 can be inserted between the two limiting plates 10; the second end of the adjusting rod 9 is provided with an external thread, and the connecting member includes two adjusting nuts 11 that cooperate with the external thread on the adjusting rod 9. The outer diameters of the two adjusting nuts 11 are larger than the distance between the two limiting plates 10, and the two adjusting nuts 11 are located on both sides of the two limiting plates 10 in the second direction. After the angle of the partition plate 3 is adjusted, the second end of the adjusting rod 9 is inserted into the corresponding position between the two limiting plates 10, and then the two adjusting nuts 11 are tightened respectively to make the two adjusting nuts 11 abut against the two limiting plates 10, so as to relatively fix the adjusting rod 9 and the limiting plate 10, and further keep the partition plate 3 fixed.

[0035] In some embodiments, there is one limiting plate 10 for each positioning member. The limiting plate 10 is vertically arranged, and a limiting groove is arranged on the limiting plate 10 along its vertical direction. Along the extending direction of the adjusting rod 9, a strip-shaped groove (not shown in the figure) penetrating along the first direction is arranged. The adjusting member includes a pin that can be inserted into the strip-shaped groove and the limiting groove, and a locking nut that cooperates with the pin to fix the adjusting rod 9 and the limiting plate 10. After the angle of the partition plate 3 is adjusted, the adjusting rod 9 is adjusted to a horizontal state, and the pin is inserted into the strip-shaped groove and the limiting groove, and then the adjusting rod 9 and the limiting plate 10 are locked with the locking nut, so as to keep the partition plate 3 fixed.

[0036] In some embodiments, a hinge seat is arranged on the control rod 4, and a pin shaft hole is arranged at the first end of the adjusting rod 9. A pin shaft rotatably connected to the hinge seat is inserted into the pin shaft hole. So that the adjusting rod 9 can rotate relative to the control rod 4 around the axis of the pin shaft to adapt to the angle of the control rod 4.

[0037] In some embodiments, the upper part of the coarse material hopper 6 cooperates with the two partition plates 3 to form two feeding ports, and the two feeding ports are communicated with the discharging port below the coarse material hopper 6. Specifically, the coarse material hopper 6 can be a cloth bag or made of stainless steel. The materials collected by the coarse material hopper 6 can be returned to the blanking hopper 1 again for grinding to improve the fineness of the materials.

[0038] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0039] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A crushing and grinding device, comprising a lower hopper (1), two grinding rollers (2) and a receiving hopper (5), wherein the lower hopper (1) is used to put materials, the two grinding rollers (2) are arranged below the lower hopper (1) and are used to grind the materials falling from the lower hopper (1) when they rotate relative to each other, and the receiving hopper (5) is used to receive the materials after being ground by the two grinding rollers (2); characterized in that: It also includes a coarsely ground particle distributor and a coarse material hopper (6); the coarsely ground particle distributor is arranged between the two grinding rollers (2) and the receiving hopper (5), and includes two distributor components, the two distributor components are respectively arranged at the two ends of the two grinding rollers (2), each distributor component includes a partition plate (3), each partition plate (3) extends along a first direction and is arranged at an angle relative to a horizontal plane, the first direction being a horizontal direction perpendicular to the axial direction of the grinding roller (2); the coarse material hopper (6) is arranged outside and below the coarsely ground particle distributor, and is used to collect the coarse material separated by the two partition plates (3).

2. The crushing and grinding device according to claim 1, characterized in that: The two partition plates (3) are symmetrically arranged on both sides of the axial direction of the grinding roller (2), and the distance between the two partition plates (3) is greater than half the length of the grinding roller (2) and less than the length of the grinding roller (2).

3. The crushing and grinding device according to claim 2, characterized in that: The material distribution assembly further comprises an angle adjustment member for adjusting the inclination angle of the partition plate (3), the angle adjustment member comprising a plate shaft (8) and a shaft sleeve (7); the plate shaft (8) is mounted on both ends of the partition plate (3), the shaft sleeve (7) is mounted on the material receiving hopper (5), and the plate shaft (8) can be rotatably inserted into the shaft sleeve (7).

4. The crushing and grinding device according to claim 3, characterized in that: The angle adjustment member further comprises a horizontal rod connected to the two plate shafts (8) and arranged coaxially with the two plate shafts (8), and a control rod (4) mounted on the horizontal rod, and the horizontal rod can be controlled to rotate around the axis of the shaft sleeve (7) by controlling the control rod (4).

5. The crushing and grinding device according to claim 4, characterized in that: The control rod (4) is mounted on the end of the horizontal rod, is perpendicular to the extension direction of the horizontal rod, and is arranged corresponding to the partition plate (3) in the first direction.

6. The crushing and grinding device according to claim 5, characterized in that: The material dividing assembly further comprises a positioning member for limiting the placement angle of the partition plate (3); the positioning member comprises an adjusting rod (9), a limiting plate (10) and an adjusting nut (11); the adjusting rod (9) is arranged along a second direction, and the second direction is perpendicular to the first direction on a horizontal plane; the two ends of the adjusting rod (9) are respectively a first end and a second end, and the first end is rotatably mounted on the control rod (4) around a reference axis, and the reference axis is in the first direction; the limiting plate (10) is fixedly arranged, and the second end of the adjusting rod (9) is detachably connected to the limiting plate (10) via a connecting member.

7. The pulverizing and grinding device according to claim 6, characterized in that: Each positioning member has two limit plates (10), the two limit plates (10) are spaced apart and vertically arranged along a first direction, and the second end of the adjusting rod (9) can be inserted between the two limit plates (10); the second end of the adjusting rod (9) is provided with an external thread, and the connecting member comprises two adjusting nuts (11) that cooperate with the external thread on the adjusting rod (9), the outer diameters of the two adjusting nuts (11) are greater than the spacing between the two limit plates (10), and the two adjusting nuts (11) are located on both sides of the two limit plates (10) in the second direction.

8. The pulverizing and grinding device according to claim 6, characterized in that: Each positioning member has a limiting plate (10), which is arranged vertically and has a limiting groove arranged on the limiting plate (10) along its vertical direction; the adjusting rod (9) has a strip groove extending along a first direction along its extension direction; the adjusting member comprises a pin capable of being inserted into the strip groove and the limiting groove, and a locking nut cooperating with the pin to fix the adjusting rod (9) and the limiting plate (10).

9. The pulverizing and grinding device according to claim 6, characterized in that: The control rod (4) is provided with an articulated seat, and the first end of the adjustment rod (9) is provided with a pin shaft hole, in which a pin shaft rotatably connected to the articulated seat is inserted.

10. The crushing and grinding device according to claim 1, characterized in that: The upper portion of the coarse material hopper (6) cooperates with the two partition plates (3) to form two feed inlets, and the two feed inlets are connected to the discharge port below the coarse material hopper (6).

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