Pigment grinding device

Abstract

The invention relates to the field of pigment production devices, in particular to a pigment grinding device which comprises a grinding box, two rotating shafts are arranged in the grinding box, the rotating shafts are driven by a grinding motor to rotate, grinding rollers are fixed to the rotating shafts, a supporting shaft is further arranged above the position between the two grinding rollers, and the supporting shaft is connected with the grinding motor. The two ends of the supporting shaft penetrate through the through holes in the grinding box and are in sliding connection with the through holes, a supporting roller is further fixed to the supporting shaft, sliding blocks are arranged at the two ends of the supporting shaft, threaded pipes are fixed to the sliding blocks, lifting motors are arranged above the sliding blocks, and screw rods are fixed to the output ends of the lifting motors. The screw rods are in threaded connection with the threaded pipes in the corresponding positions, a filter plate is further fixed to the position, below the grinding rollers, in the grinding box, filter holes are evenly formed in the filter plate, a push plate is further arranged above the filter plate, and a lead screw and a plurality of sliding rods are further arranged on the grinding box. The device can be used for grinding the pigment for multiple times.

Description

Technical Field

[0001] The present invention relates to the field of pigment production devices, and particularly to a pigment grinding device. Background Art

[0002] Color masterbatch, also called colorant, is a new type of special colorant for polymer materials, also known as pigment preparation. When producing color masterbatch, the coarse mixture of pigments and additives needs to be finely ground to obtain uniform and stable fine pigment particles.

[0003] Patent Application No.: CN201720814695.6 discloses a pigment grinding machine, which includes a pigment tank. A solenoid valve is provided at the bottom of the pigment tank. A discharge pipe is provided on one side of the pigment tank, and the discharge pipe is connected to the solenoid valve through a pipeline. A grinding device is provided below the discharge pipe. Two U-shaped outer shells are provided at the top of the grinding device. Grinding balls are provided between the U-shaped outer shells. The bottom of the grinding balls is connected to a driving motor. Movable bolts are provided on one side of each U-shaped outer shell, and a controller is provided on one side of the movable bolts. Storage bins are provided below each U-shaped outer shell. The pigments are ground by the grinding balls. However, such a grinding device can only grind the pigments once after feeding, and cannot grind the pigments multiple times.

[0004] The present invention is studied and proposed in view of the deficiencies of the prior art. Summary of the Invention

[0005] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a pigment grinding device.

[0006] The present invention can be realized by the following technical solutions:

[0007] The present invention discloses a pigment grinding device, comprising a grinding box. Two rotating shafts are arranged in the grinding box, and the rotating shafts are all driven to rotate by grinding motors. Grinding rollers are fixed on the rotating shafts. Above the space between the two grinding rollers, a support shaft is further arranged. Both ends of the support shaft pass through through-holes on the grinding box and are slidably connected to the through-holes. A support roller is fixed on the support shaft. Sliders are arranged at both ends of the support shaft, and threaded tubes are fixed on the sliders. Lifting motors are arranged above the sliders, and screw rods are fixed at the output ends of the lifting motors. The screw rods are in threaded connection with the threaded tubes at corresponding positions. A filter plate is further fixed in the grinding box below the grinding rollers. Filter holes are evenly arranged on the filter plate. A push plate is further arranged above the filter plate. A lead screw and multiple slide rods are arranged on the grinding box. The slide rods pass through the push plate and are slidably connected to the push plate. The lead screw passes through the push plate and is in threaded connection with the push plate. A limiting hole adapted to the grinding roller is arranged at the upper end of the push plate. The lead screw is driven to rotate by a feeding motor. The pigment to be ground is put into the grinding box. The grinding rollers are driven to rotate by the grinding motors. When the pigment slides down between the grinding rollers and the support roller, the pigment is ground by the grinding rollers. After the pigment is ground, it falls below the grinding rollers. After the pigment is ground, the feeding motor starts. The feeding motor drives the lead screw to rotate. Since the lead screw is in threaded connection with the push plate, when the lead screw rotates, the push plate moves. The push plate pushes the pigment. When the push plate moves, it squeezes the pigment, and the pigment rises along the push plate. And the grinding motors drive the grinding rollers to rotate in the reverse direction, driving the pigment to reach above the grinding rollers. After the pigment reaches above the grinding rollers, the lifting motors drive the screw rods to rotate, the sliders descend, and the support rollers descend with the sliders. After the support rollers descend, the distance between the support rollers and the grinding rollers becomes smaller, that is, the grinding spacing decreases. Then, the rotation direction of the grinding rollers is adjusted again, and the pigment passes between the grinding rollers and the support roller again, and the pigment is ground again by the grinding rollers and the support roller. The cycle operation is carried out, and the ground pigment is discharged through the filter holes on the filter plate and discharged and collected through the discharge port. This device can realize multiple grinding of the pigment and gradually reduce the grinding spacing, and can grind the pigment to the specified size.

[0008] Preferably, gears are fixed on the rotating shafts, and the two gears mesh with each other.

[0009] Preferably, both ends of the push plate are of arc surface structures. Through the arc surface structures, when pushing the pigment, the pigment can move upward gradually.

[0010] Preferably, chutes are fixed in the grinding box at the positions of the through-holes, and sealing plates are further arranged in the chutes. The support shaft passes through the sealing plates and is rotatably connected to the sealing plates. The through-holes are sealed by the sealing plates.

[0011] Preferably, limiting blocks are further fixed in the grinding box on both sides of the grinding rollers. Through the blocking of the limiting blocks, it is avoided that the pigment passes between the grinding rollers and the grinding box.

[0012] Preferably, the support shaft is also driven to rotate by a support motor.

[0013] The present invention has the following advantages compared with the existing technology:

[0014] This device can achieve multiple grindings of the pigment, and gradually reduce the grinding distance, and can grind the pigment to the specified size. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further details the specific embodiments of the present invention in conjunction with the drawings, where:

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is a top view of the present invention;

[0018] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in

[0019] Figure 4 is Figure 2 a cross-sectional view taken along line B-B in

[0020] In the figure: 1, grinding box; 2, rotating shaft; 3, gear; 4, grinding motor; 5, grinding roller; 6, support shaft; 7, support roller; 8, slider; 9, threaded pipe; 10, lifting motor; 11, screw rod; 12, support motor; 13, through hole; 14, sealing plate; 15, chute; 16, filter plate; 17, filter hole; 18, push plate; 19, lead screw; 20, pushing motor; 21, slide bar; 22, discharge port; 23, limit block; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following details the embodiments of the present invention in conjunction with the drawings:

[0022] Embodiment 1:

[0023] As Figures 1 to 4As shown in the figure, this embodiment discloses a pigment grinding device, which includes a grinding box 1. Inside the grinding box 1, there are two rotating shafts 2. The rotating shafts 2 are both driven to rotate by a grinding motor 4. Grinding rollers 5 are fixed on the rotating shafts 2. Above the space between the two grinding rollers 5, there is also a support shaft 6. Both ends of the support shaft 6 pass through through-holes 13 on the grinding box 1 and are slidably connected to the through-holes 13. A support roller 7 is also fixed on the support shaft 6. At both ends of the support shaft 6, there are sliders 8. Threaded tubes 9 are fixed on the sliders 8. Above the sliders 8, there are lifting motors 10. Screw rods 11 are fixed on the output ends of the lifting motors 10. The screw rods 11 are threadedly connected to the threaded tubes 9 at the corresponding positions. Inside the grinding box 1 below the grinding rollers 5, there is also a filter plate 16. Filter holes 17 are evenly arranged on the filter plate 16. Above the filter plate 16, there is also a push plate 18. On the grinding box 1, there is also a lead screw 19 and multiple slide rods 21. The slide rods 21 pass through the push plate 18 and are slidably connected to the push plate 18. The lead screw 19 passes through the push plate 18 and is threadedly connected to the push plate 18. At the upper end of the push plate 18, there are limit holes adapted to the grinding rollers 5. The lead screw 19 is driven to rotate by a feeding motor 20. The pigment to be ground is put into the grinding box 1. The grinding rollers 5 are driven to rotate by the grinding motor 4. When the pigment slides down between the grinding rollers 5 and the support roller 7, the pigment is ground by the grinding rollers 5. After the pigment is ground, it falls below the grinding rollers 5. After the pigment is ground, the feeding motor 20 is started. The feeding motor 20 drives the lead screw 19 to rotate. Since the lead screw 19 is threadedly connected to the push plate 18, when the lead screw 19 rotates, the push plate 18 moves. The push plate 18 pushes the pigment. When the push plate 18 moves, it squeezes the pigment, and the pigment rises along the push plate 18. And the grinding rollers 5 are driven to rotate in the reverse direction by the grinding motor 4, driving the pigment to reach above the grinding rollers 5. After the pigment reaches above the grinding rollers 5, the screw rods 11 are driven to rotate by the lifting motors 10, and the sliders 8 descend. The support roller 7 descends with the sliders 8. After the support roller 7 descends, the distance between the support roller 7 and the grinding rollers 5 becomes smaller, that is, the grinding spacing decreases. Then, the rotation direction of the grinding rollers 5 is adjusted again, and the pigment passes between the grinding rollers 5 and the support roller 7 again, and the pigment is ground again by the grinding rollers 5 and the support roller 7. It operates in a cycle. And the ground pigment is discharged through the filter holes 17 on the filter plate 16 and discharged and collected through the discharge port 22. This device can realize multiple grinding of the pigment and gradually reduce the grinding spacing, and can grind the pigment to the specified size.

[0024] Among them, gears 3 are fixed on the rotating shafts 2, and the two gears 3 mesh with each other.

[0025] Among them, both ends of the push plate 18 are arc-shaped structures. Through the arc-shaped structures, when pushing the pigment, the pigment can gradually move upward.

[0026] Among them, limit blocks 23 are also fixed inside the grinding box 1 on both sides of the grinding rollers 5. Through the blocking of the limit blocks 23, it is avoided that the pigment passes between the grinding rollers 5 and the grinding box 1.

[0027] Among them, the support shaft 6 is also driven to rotate by the support motor 12.

[0028] Embodiment 2:

[0029] This embodiment discloses a pigment grinding device. On the basis of the structure and principle of Embodiment 1, grinding boxes 1 at the positions of through holes 13 in this embodiment are all fixedly provided with sliding grooves 15. A sealing plate 14 is further arranged in the sliding grooves 15. The support shaft 6 passes through the sealing plate 14 and is rotatably connected to the sealing plate 14. The through hole 13 is sealed by the sealing plate 14.

[0030] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present invention, various changes, modifications, substitutions, and variations can be made to these embodiments, and these changes, modifications, substitutions, and variations should also be regarded as the protection scope of the present invention.

Claims

1. A pigment grinding device, comprising a grinding box, characterized in that, Two rotating shafts are arranged in the grinding box. The rotating shafts are driven to rotate by grinding motors. Grinding rollers are fixed on the rotating shafts. A support shaft is further arranged above the two grinding rollers. Both ends of the support shaft pass through through holes on the grinding box and are slidably connected to the through holes. A support roller is also fixed on the support shaft. Sliders are arranged at both ends of the support shaft. Threaded tubes are fixed on the sliders. Lifting motors are arranged above the sliders. Screws are fixed at the output ends of the lifting motors. The screws are threadedly connected to the threaded tubes at corresponding positions. A filter plate is further fixed in the grinding box below the grinding rollers. Filter holes are evenly arranged on the filter plate. A push plate is further arranged above the filter plate. A lead screw and multiple slide bars are arranged on the grinding box. The slide bars pass through the push plate and are slidably connected to the push plate. The lead screw passes through the push plate and is threadedly connected to the push plate. A limiting hole adapted to the grinding roller is arranged at the upper end of the push plate. The lead screw is driven to rotate by a feeding motor.

2. The pigment grinding device according to claim 1, characterized in that, Gears are fixed on the rotating shafts, and the two gears are meshed with each other.

3. The pigment grinding device according to claim 1, wherein, Both ends of the push plate are of arc surface structures.

4. The pigment grinding device according to claim 1, characterized in that, Limiting blocks are further fixed in the grinding box on both sides of the grinding rollers.

5. The pigment grinding device according to claim 1, characterized in that, The support shaft is also driven to rotate by a support motor.

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