A raw meal grinding device with controllable wind speed

Abstract

The utility model discloses a raw material grinding device of controllable wind velocity relates to raw material grinding technical field, including the grinding box, the servo motor is installed at the top of grinding box, the servo motor output shaft fixedly connected with the pivot, be equipped with the wind speed adjusting assembly on the grinding box, and the wind speed adjusting assembly includes the outer tube, the inner tube is equipped with the outer tube inner chamber, the outer tube and the inner tube side are respectively connected with first strip board and second strip board symmetry, the utility model drives the pivot through the setting servo motor, drives the inner tube relative outer tube rotation, can adjust the relative position between the ventilation opening and first strip board, second strip board, thereby realizes the accurate control to the wind velocity, satisfies the different requirement of different raw material grinding stage to the wind velocity, and sets up the first strip board and second strip board of mutual staggered annular array distribution, divides and mixes the wind that blows out from the ventilation opening, makes the airflow even distribution in the grinding box, improves the uniformity of grinding finished product.

Description

Technical Field

[0001] This utility model relates to the field of raw material grinding technology, specifically to a raw material grinding device with controllable wind speed. Background Technology

[0002] Raw material grinding equipment is a device used to process lumpy or granular raw materials into powdered materials with a certain fineness and particle size distribution. By adjusting the air speed, particles of different sizes can be selectively conveyed to meet the requirements of different industries for the fineness and uniformity of raw material powder. However, existing raw material grinding equipment controls the air speed by adjusting valves. Since one side of the valve opens more and the other side opens less, the airflow is unevenly distributed when passing through the valve, resulting in uneven airflow entering the grinding chamber. Unstable airflow will affect the material classification effect, resulting in uneven particle size distribution of the finished raw material and affecting product quality.

[0003] To address these issues, we designed a raw material grinding device with controllable wind speed. Utility Model Content

[0004] The purpose of this invention is to provide a raw material grinding device with controllable wind speed to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a raw material grinding device with controllable wind speed, including a grinding box. A servo motor is installed on the top of the grinding box, and a rotating shaft is fixedly connected to the output shaft of the servo motor. The grinding box is provided with a wind speed adjustment component, which includes an outer cylinder and an inner cylinder fitted inside the outer cylinder. A first strip plate and a second strip plate are symmetrically connected to the sides of the outer cylinder and the inner cylinder, respectively. Ventilation openings are provided through the outer cylinder and the inner cylinder. An air inlet pipe is connected to the outer cylinder. The ventilation openings correspond to the first strip plate and the second strip plate, respectively. The bottom of the rotating shaft is fixedly connected to the inner cylinder.

[0006] Furthermore, the first strip plate and the second strip plate are arranged in a ring array and are staggered with each other.

[0007] Furthermore, the inner cylinder can rotate relative to the outer cylinder.

[0008] Furthermore, a feed pipe is fixedly connected to the feed inlet at the top of the grinding box.

[0009] Furthermore, the axis of the outer cylinder is perpendicular to the axis of the air inlet pipe, the end of the air inlet pipe away from the grinding box is connected to a fan, and a flange is installed between the air inlet pipe and the air outlet of the fan.

[0010] Furthermore, the output shaft of the servo motor is fixedly connected to the rotating shaft coaxially via a coupling.

[0011] Furthermore, a grinding disc is installed inside the grinding box, and an abrasive roller is installed on the inner side of the grinding box via a bracket. The top of the grinding disc is rotatably connected to the abrasive roller.

[0012] Furthermore, a discharge pipe is connected to one side of the grinding disc, and the discharge pipe penetrates the side wall of the grinding box.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting a servo motor to drive the rotating shaft, the inner cylinder rotates relative to the outer cylinder, which can adjust the relative position between the ventilation port and the first and second strip plates, thereby achieving precise control of the wind speed and meeting the different wind speed requirements of different raw material grinding stages. Furthermore, the first and second strip plates are set up in a staggered ring array to divide and mix the air blown out of the ventilation port, so that the airflow in the grinding box is evenly distributed, improving the uniformity of the ground product.

[0015] 2. By setting the top of the grinding disc to be rotatably connected to the abrasive roller, the grinding disc rotates stably under the drive of an AC motor, and drives the abrasive roller to rotate around the axis of the grinding disc. Under the action of centrifugal force generated by the rotation of the grinding disc, the material is thrown to the edge of the grinding disc and fully contacts the abrasive roller. The abrasive roller achieves the grinding effect on the material under the action of material friction and its own gravity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a partial sectional view of the grinding box of this utility model;

[0018] Figure 3 This is a schematic diagram of the wind speed regulating component of this utility model;

[0019] Figure 4 This is an exploded view of the adjustment component of this utility model.

[0020] In the diagram: 1. Grinding box; 2. Feed pipe; 3. Servo motor; 4. Fan; 5. Discharge pipe; 6. Grinding roller; 7. Grinding disc; 8. Air inlet pipe; 9. Flange; 10. Outer cylinder; 11. Ventilation port; 12. First strip plate; 13. Rotating shaft; 14. Inner cylinder; 15. Second strip plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a raw material grinding device with controllable wind speed, including a grinding box 1, a servo motor 3 installed on the top of the grinding box 1, the output shaft of the servo motor 3 being coaxially and fixedly connected to the rotating shaft 13 through a coupling, a wind speed adjustment component on the grinding box 1, the wind speed adjustment component including an outer cylinder 10, an inner cylinder 14 sleeved in the inner cavity of the outer cylinder 10, a first strip plate 12 and a second strip plate 15 symmetrically connected to the sides of the outer cylinder 10 and the inner cylinder 14 respectively, the first strip plate 12 and the second strip plate 15 being arranged in a ring array and interleaved with each other, ventilation openings 11 penetrating through the outer cylinder 10 and the inner cylinder 14, the outer cylinder 10 being connected to an air inlet pipe 8, the ventilation openings 11 corresponding to the first strip plate 12 and the second strip plate 15 respectively, the bottom of the rotating shaft 13 being fixedly connected to the inner cylinder 14, the inner cylinder 14 being able to rotate relative to the outer cylinder 10.

[0023] In practice, the servo motor 3 installed on the top of the grinding chamber 1 is started. The output shaft of the servo motor 3 drives the rotating shaft 13 to rotate through the coupling, causing the inner cylinder 14 to rotate relative to the outer cylinder 10. At this time, the relative position between the ventilation port 11 and the first strip plate 12 and the second strip plate 15 changes. When the inner cylinder 14 rotates, increasing the gap between the ventilation port 11 and the first strip plate 12 and the second strip plate 15, the air entering the outer cylinder 10 through the air inlet pipe 8 can be blown out more smoothly through the ventilation port 11, and the wind speed will increase. Conversely, when the inner cylinder 14 rotates, causing the gap between the ventilation port 11 and the first strip plate 12 and the second strip plate 15 to decrease, the airflow encounters greater resistance when passing through the ventilation port 11, the amount of air blown out decreases, and the wind speed decreases, thereby achieving control of the wind speed in the raw material grinding device. Because the first strip plate 12 and the second strip plate 15 are intersected, when the wind blows out from the vent 11, it will be divided into multiple airflow channels by the first strip plate 12 and the second strip plate 15. The uneven airflow will be continuously adjusted and mixed as it passes through, so that the airflow can be uniformly processed at different positions, and finally the uniform distribution of wind is achieved.

[0024] See Figures 1-2 As shown, the axis of the outer cylinder 10 is perpendicular to the axis of the air inlet pipe 8. The end of the air inlet pipe 8 away from the grinding box 1 is connected to the air outlet of the blower 4. When the blower 4 is started, air can be blown into the grinding box 1 through the air inlet pipe 8. A flange 9 is installed between the air inlet pipe 8 and the air outlet of the blower 4.

[0025] See Figures 1-2 A feed pipe 2 is fixedly connected to the feed inlet at the top of the grinding box 1. A grinding disc 7 is installed inside the grinding box 1. The bottom of the grinding disc 7 is fixedly connected to the output shaft of the AC motor through a bearing. An abrasive roller 6 is installed on the inner side of the grinding box 1 through a bracket. The top of the grinding disc 7 is rotatably connected to the abrasive roller 6. A discharge pipe 5 is connected to one side of the grinding disc 7. The discharge pipe 5 passes through the side wall of the grinding box 1. The raw material is transported to the grinding disc 7 inside the grinding box 1 through the feed pipe 2. The AC motor is started to drive the grinding disc 7 to rotate, and drives the abrasive roller 6 to rotate around the axis of the grinding disc 7. At this time, under the action of centrifugal force generated by the rotation of the grinding disc 7, the material is thrown to the edge of the grinding disc 7 and comes into contact with the abrasive roller 6. The abrasive roller 6 crushes and grinds the material under the action of material friction and its own gravity. The ground material is discharged through the discharge pipe 5 connected to one side of the grinding disc 7. The discharge pipe 5 passes through the side wall of the grinding box 1 and outputs the finished product.

[0026] Working principle:

[0027] In operation, the servo motor 3 is first started, and its output shaft drives the rotating shaft 13 to rotate, which in turn drives the inner cylinder 14 to rotate relative to the outer cylinder 10. Based on the grinding requirements, the rotational position of the inner cylinder 14 is adjusted to change the gap between the vent 11 and the first strip plate 12 and the second strip plate 15, thereby regulating the airflow speed. When the airflow speed needs to be increased, the gap is increased; when the airflow speed needs to be decreased, the gap is decreased. Because the first strip plate 12 and the second strip plate 15 are staggered, when air is blown out from the vent 11, it is divided into multiple airflow channels by the first strip plate 12 and the second strip plate 15. The originally uneven airflow is continuously adjusted and mixed after passing through, ensuring that the airflow is uniformly processed at different positions, ultimately achieving a uniform airflow distribution.

[0028] Then, by turning on the AC motor to drive the grinding disc 7 to rotate, the abrasive roller 6 will work and the raw material will be conveyed from the feed pipe 2 to the grinding disc 7 in the grinding box 1. After the material is crushed and ground by the abrasive roller 6 and the grinding disc 7, it will be discharged from the discharge pipe 5.

Claims

1. A raw material grinding device with controllable wind speed, comprising a grinding chamber (1), wherein a servo motor (3) is mounted on the top of the grinding chamber (1), and a rotating shaft (13) is fixedly connected to the output shaft of the servo motor (3), characterized in that, The grinding box (1) is equipped with a wind speed adjustment component, which includes an outer cylinder (10). An inner cylinder (14) is fitted inside the outer cylinder (10). A first strip plate (12) and a second strip plate (15) are symmetrically connected to the sides of the outer cylinder (10) and the inner cylinder (14). Ventilation openings (11) are provided through the outer cylinder (10) and the inner cylinder (14). An air inlet pipe (8) is connected to the outer cylinder (10). The ventilation openings (11) correspond to the first strip plate (12) and the second strip plate (15) respectively. The bottom of the rotating shaft (13) is fixedly connected to the inner cylinder (14).

2. The raw material grinding device with controllable wind speed as described in claim 1, characterized in that: The first strip plate (12) and the second strip plate (15) are arranged in a ring array and are interleaved with each other.

3. The raw material grinding device with controllable wind speed as described in claim 1, characterized in that: The inner cylinder (14) can rotate relative to the outer cylinder (10).

4. The raw material grinding device with controllable wind speed as described in claim 1, characterized in that: The feed inlet at the top of the grinding box (1) is fixedly connected to the feed pipe (2).

5. The raw material grinding device with controllable wind speed as described in claim 1, characterized in that: The axis of the outer cylinder (10) is perpendicular to the axis of the air inlet pipe (8). The end of the air inlet pipe (8) away from the grinding box (1) is connected to a fan (4). A flange (9) is installed between the air inlet pipe (8) and the air outlet of the fan (4).

6. The raw material grinding device with controllable wind speed as described in claim 1, characterized in that: The output shaft of the servo motor (3) is fixedly connected to the rotating shaft (13) coaxially via a coupling.

7. The raw material grinding device with controllable wind speed as described in claim 4, characterized in that: The grinding box (1) is equipped with a grinding disc (7) inside, and an abrasive roller (6) is installed on the inner side of the grinding box (1) via a bracket. The top of the grinding disc (7) is rotatably connected to the abrasive roller (6).

8. The raw material grinding device with controllable wind speed as described in claim 7, characterized in that: The grinding disc (7) is connected to a discharge pipe (5) on one side, and the discharge pipe (5) penetrates the side wall of the grinding box (1).

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