Protective device for three-roller grinding machine

Abstract

The utility model belongs to the technical field of three-roller grinding mills, and discloses a protective device for a three-roller grinding miller, which comprises a device main body, three grinding rollers are uniformly arranged on the device main body along the horizontal direction, two sides of the device main body are both provided with butt joint grooves, butt joint strips are clamped in the butt joint grooves, and the butt joint strips are clamped in the butt joint grooves. The same protective top plate is arranged on the two butt joint strips, and through mutual cooperation of the protective top plate, the dust suction opening, the dust collection box and other structures, after the three-roller grinding machine is used, the butt joint strips on the two sides of the protective top plate are clamped into the butt joint grooves in the two sides of the device body, so that the purposes of installing the protective top plate and blocking dust are achieved, and the service life of the three-roller grinding machine is prolonged. And negative pressure can be generated in a dust suction cavity through a negative pressure fan, so that dust on the surfaces of the three grinding rollers can be sucked through a dust suction opening, the dust collection box can be taken down along a limiting frame and cleaned, and continuous use is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinders, and in particular relates to a protective device for a three-roll grinder. Background Art

[0002] Three-roll mill is called three-roll mill for short. Three-roll mill can be divided into two types: experimental three-roll mill and production three-roll mill. Three-roll mill is suitable for the manufacture of slurries such as paint, ink, pigment, plastic, etc. Working principle of three-roll mill: Three-roll mill achieves grinding effect through mutual extrusion of the surfaces of three horizontal rollers and friction at different speeds. Three-roll mill is the most effective grinding and dispersing equipment for high-viscosity materials.

[0003] However, the existing three-roller grinding machine has no covering device after use. After being placed for a long time, dust will adhere to the surfaces of the rollers and the discharge plate, affecting the quality of the raw materials ground next time. Utility Model Content

[0004] The purpose of the utility model is to provide a protective device for a three-roller grinding machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective device for a three-roller grinder, comprising a device main body, three grinding rollers are evenly arranged on the device main body in the horizontal direction, docking grooves are arranged on both sides of the device main body, docking strips are clamped in the docking grooves, the same protective top plate is arranged on the two docking strips, a limit frame is arranged on the top of the protective top plate, a dust box is clamped in the limit frame, a handle is welded on the dust box, an inspection cover is provided on one side of the dust box, a dust suction port is arranged at the bottom center of the protective top plate, a dust suction cavity is provided in the dust suction port, a conveying pipe connected to the outside is provided on the top inner wall of the dust suction cavity, a through hole compatible with the conveying pipe is provided at the bottom of the dust box, and a negative pressure fan is arranged on the top of the dust box.

[0006] Preferably, four electric telescopic rods are distributed along the matrix on the top of the protective top plate, the action output shafts of the four electric telescopic rods pass through the protective top plate and are installed with the same lifting frame, and three cleaning plates compatible with the grinding roller are evenly arranged in the horizontal direction on the lifting frame.

[0007] Preferably, limit strips are arranged on both sides of the dust box, and the limit strips are matched with the limit frames.

[0008] Preferably, a fixed block is welded on one side of the dust box, a sliding hole is provided on the fixed block, a limiting rod is slidably arranged in the sliding hole, and a limiting hole adapted to the limiting rod is provided on the top of the limiting frame close to the fixed block.

[0009] Preferably, two mutually symmetrical limiting sliding grooves are provided on the inner wall of the sliding hole, and limiting blocks are slidably arranged in the limiting sliding grooves, and the limiting blocks are installed on the limiting plug rod.

[0010] Preferably, a return spring is arranged in the limiting slide groove, one end of the return spring is mounted on the inner wall of the limiting slide groove, and the other end of the return spring is mounted on the limiting block.

[0011] Preferably, one end of the limiting rod away from the limiting hole is connected to a handle.

[0012] The beneficial effects of the utility model are:

[0013] In the utility model, by the mutual cooperation of the structures such as the protective top plate, the dust suction port and the dust collecting box, after the use of the three-roller grinder, the docking strips on both sides of the protective top plate can be inserted into the docking grooves on both sides of the device body, so that the protective top plate can be installed to achieve the purpose of blocking dust, and negative pressure can be generated in the dust suction chamber by the negative pressure fan, so that the dust on the surfaces of the three grinding rollers can be adsorbed through the dust suction port, and the dust collecting box can be removed along the limit frame and the dust collecting box can be cleaned, so that it is convenient to continue using it. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a protective device for a three-roller grinding machine proposed by the utility model;

[0015] Figure 2 A schematic diagram of the side cross-sectional structure of a protective device for a three-roller grinding machine proposed by the utility model;

[0016] Figure 3 It is a side cross-sectional schematic diagram of a structure of a fixed block and a limiting plug rod for a three-roller grinding machine proposed by the utility model;

[0017] Figure 4 A three-roller grinding machine proposed by the utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0018] In the figure: 1. Device body; 2. Protective top plate; 3. Docking groove; 4. Docking strip; 5. Limit frame; 6. Dust box; 7. Negative pressure fan; 8. Handle; 9. Electric telescopic rod; 10. Lifting frame; 11. Dust suction port; 12. Dust suction chamber; 13. Delivery pipe; 14. Limit strip; 15. Grinding roller; 16. Cleaning plate; 17. Limiting rod; 18. Handle; 19. Slide hole; 20. Limit block; 21. Limit slide groove; 22. Fixed block; 23. Reset spring; 24. Limit hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-4 A protective device for a three-roller grinder comprises a device body 1, on which three grinding rollers 15 are evenly arranged in a horizontal direction, docking grooves 3 are arranged on both sides of the device body 1, docking strips 4 are clamped in the docking grooves 3, and the same protective top plate 2 is arranged on the two docking strips 4, a limit frame 5 is arranged on the top of the protective top plate 2, a dust box 6 is clamped in the limit frame 5, a handle 8 is welded on the dust box 6, an inspection cover is provided on one side of the dust box 6, a dust suction port 11 is arranged at the bottom center of the protective top plate 2, a dust suction cavity 12 is provided in the dust suction port 11, a conveying pipe 13 connected to the outside is provided on the top inner wall of the dust suction cavity 12, a through hole adapted to the conveying pipe 13 is provided at the bottom of the dust box 6, and a negative pressure fan 7 is arranged on the top of the dust box 6.

[0021] By cooperating with each other, the protective top plate 2, the dust suction port 11 and the dust box 6, after the use of the three-roller grinder, the docking strips 4 on both sides of the protective top plate 2 can be inserted into the docking grooves 3 on both sides of the device body 1, so as to realize the installation of the protective top plate 2 and achieve the purpose of blocking dust. In addition, the negative pressure fan 7 can be used to generate negative pressure in the dust suction chamber 12, so that the dust on the surface of the three grinding rollers 15 can be adsorbed through the dust suction port 11, and the dust box 6 can be removed along the limit frame 5 and the dust box 6 can be cleaned, so that it is convenient to continue using it.

[0022] Specifically, in this embodiment, four electric telescopic rods 9 are distributed along the matrix on the top of the protective top plate 2. The action output shafts of the four electric telescopic rods 9 pass through the protective top plate 2 and are installed with the same lifting frame 10. Three cleaning plates 16 compatible with the grinding roller 15 are evenly arranged in the horizontal direction on the lifting frame 10.

[0023] By arranging the electric telescopic rod 9, the lifting frame 10 and the cleaning plate 16, the lifting frame 10 can be driven to descend vertically by the electric telescopic rod 9, so that the cleaning plate 16 at the bottom of the lifting frame 10 is in contact with the grinding roller 15. At this time, the machine is started to rotate the three grinding rollers 15, thereby achieving the purpose of cleaning the grinding rollers 15.

[0024] Specifically, in this embodiment, limit bars 14 are arranged on both sides of the dust box 6 , and the limit bars 14 are matched with the limit frames 5 .

[0025] By arranging the limiting strips 14 , the dust box 6 can be conveniently connected to the limiting frame 5 , and the dust box 6 can be limited and fixed by the limiting frame 5 .

[0026] Specifically, in this embodiment, a fixed block 22 is welded to one side of the dust box 6, a sliding hole 19 is opened on the fixed block 22, a limiting rod 17 is slidably arranged in the sliding hole 19, and a limiting hole 24 adapted to the limiting rod 17 is opened on the top of the limiting frame 5 near the fixed block 22.

[0027] By arranging the limiting rod 17 , the connection and fixation between the dust box 6 and the limiting frame 5 can be achieved by inserting the limiting rod 17 into the limiting hole 24 .

[0028] Specifically, in this embodiment, two mutually symmetrical limiting sliding grooves 21 are provided on the inner wall of the sliding hole 19 , and a limiting block 20 is slidably arranged in the limiting sliding groove 21 , and the limiting block 20 is installed on the limiting plug rod 17 .

[0029] By arranging the limiting groove 21 and the limiting block 20, the limiting block 20 can be driven to slide along the limiting groove 21 when the limiting rod 17 moves, thereby guiding the moving direction of the limiting rod 17 and limiting the moving range of the limiting rod 17, thereby preventing the limiting rod 17 from detaching from the fixing block 22.

[0030] Specifically, in this embodiment, a return spring 23 is arranged in the limiting slide groove 21 , one end of the return spring 23 is mounted on the inner wall of the limiting slide groove 21 , and the other end of the return spring 23 is mounted on the limiting block 20 .

[0031] By arranging a reset spring 23, the limit block 20 can always be pressed against the inner wall of one side of the limit slide groove 21, and when the limit plug 17 is pulled to drive the limit block 20 to move, the reset spring 23 can be squeezed. When the limit plug 17 is released, the elastic potential energy of the reset spring 23 can drive the limit plug 17 to automatically reset, and the limit plug 17 can always be pressed against the limit hole 24, thereby ensuring the connection stability between the dust box 6 and the limit frame 5.

[0032] Specifically, in this embodiment, one end of the limiting rod 17 away from the limiting hole 24 is connected to a handle 18 .

[0033] The handle 18 can be used to facilitate adjustment of the limit rod 17 .

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A protective device for a three-roll grinding machine, comprising a device body, characterized in that: Three grinding rollers are evenly arranged on the device body in the horizontal direction, docking grooves are arranged on both sides of the device body, docking strips are clamped in the docking grooves, the same protective top plate is arranged on the two docking strips, a limit frame is arranged on the top of the protective top plate, a dust box is clamped in the limit frame, a handle is welded on the dust box, an inspection cover is provided on one side of the dust box, a dust suction port is arranged at the bottom center of the protective top plate, a dust suction cavity is provided in the dust suction port, a conveying pipe connected to the outside is provided on the top inner wall of the dust suction cavity, a through hole compatible with the conveying pipe is provided at the bottom of the dust box, and a negative pressure fan is arranged on the top of the dust box.

2. A protective device for a three-roll mill according to claim 1, characterized in that: Four electric telescopic rods are distributed along the matrix on the top of the protective top plate. The action output shafts of the four electric telescopic rods pass through the protective top plate and are installed with the same lifting frame. Three cleaning plates compatible with the grinding rollers are evenly arranged in the horizontal direction on the lifting frame.

3. A protective device for a three-roll mill according to claim 1, characterized in that: Limiting strips are arranged on both sides of the dust collecting box, and the limiting strips are matched with the limiting frames.

4. A protective device for a three-roll mill according to claim 1, characterized in that: A fixing block is welded on one side of the dust collecting box, a sliding hole is provided on the fixing block, a limiting plug rod is slidably arranged in the sliding hole, and a limiting hole matched with the limiting plug rod is provided on the top of the limiting frame close to the fixing block.

5. A protective device for a three-roll mill according to claim 4, characterized in that: Two mutually symmetrical limiting sliding grooves are arranged on the inner wall of the sliding hole, and limiting blocks are slidably arranged in the limiting sliding grooves, and the limiting blocks are installed on the limiting plug rod.

6. A protective device for a three-roll mill according to claim 5, characterized in that: A return spring is arranged in the limiting sliding groove, one end of the return spring is installed on the inner wall of the limiting sliding groove, and the other end of the return spring is installed on the limiting block.

7. A protective device for a three-roll mill according to claim 4, characterized in that: One end of the limiting rod away from the limiting hole is connected with a handle.

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