Multi-section high-precision micro-powder airflow crushing and grading machine

Abstract

The utility model discloses a multi-section high-precision micro-powder airflow pulverization grader, which relates to the technical field of airflow pulverization graders and particularly comprises a first grader, a second grader and a third grader. According to the multi-section high-precision micro-powder airflow crushing and grading machine, through the arrangement of a disc, a positioning sliding block, a T-shaped sliding block, an adjusting plate and an impact block, the multi-section high-precision micro-powder airflow crushing and grading machine has the effect of preventing a screen from being blocked, the screen is impacted through reciprocating motion of the impact block, the screen is prevented from being blocked, particles move along with airflow, and the crushing efficiency is improved. When the particles are jetted by the supersonic nozzles, the particles jetted by different supersonic nozzles collide and rub with one another, so that the particles are crushed into smaller particles, the particles collide with the screen along with the airflow, qualified particles enter the collecting box through the screen, and unqualified particles enter the conveying pipe along with the airflow; and crushing is carried out in the next grader, so that the purpose of improving the practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of airflow pulverizing and classifying machines, in particular to a multi-stage high-precision micro-powder airflow pulverizing and classifying machine. Background Art

[0002] Crushing is the main method to obtain ultrafine powders. The advantages of this method are simple process and adaptability to large-scale industrial production. However, there are still many technical and economic problems in producing ultrafine powders by relying solely on a single mechanical crushing equipment, such as: the particle size distribution of the crushed product is difficult to control, the crushing energy consumption is high, and the production capacity is low. In addition, due to the extremely strong surface force between ultrafine particles, the particles will experience strong mutual adsorption and agglomeration during the crushing process. The finer the particles, the more serious the agglomeration. Due to the heterogeneity of the material structure, that is, the difference in structural strength, the particle size of the product during the crushing process is non-uniform, that is, the broad spectrum of particle distribution; in order to make all the material particle size meet the particle size requirements, it is often necessary to continue to grind all the materials for a long time or perform multiple classification and screening, which not only consumes a lot of electricity, but also causes the particles that have already met the particle size requirements to be over-crushed.

[0003] The multi-stage high-precision micro-powder airflow pulverizing and classifying machine in the prior art is easily clogged during screen filtering, which affects the screening of materials and has poor practicality. In addition, the existing multi-stage high-precision micro-powder airflow pulverizing and classifying machine is not convenient for removing the materials collected after classification and pulverization. A multi-stage high-precision micro-powder airflow pulverizing and classifying machine is now invented to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a multi-stage high-precision micro-powder airflow pulverizing and classifying machine, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical scheme: a multi-stage high-precision micro-powder airflow pulverizing and classifying machine, including a first classifier, a second classifier and a third classifier, the first classifier, the second classifier and the third classifier are all equipped with a cylinder at the bottom, a screen is installed inside the cylinder, a rectangular frame is installed at the bottom of the cylinder, a strip plate is installed inside the rectangular frame, a servo motor is installed on one side of the rectangular frame, a disc is installed at the output end of the servo motor, a positioning slider is installed on one side of the disc, a T-shaped slide groove is opened inside the strip plate with the front and rear direction as the depth direction and the up and down direction as the length direction, a T-shaped slider is arranged inside the T-shaped slide groove, an adjusting plate is installed at the end of the T-shaped slider, a spring cylinder is installed on the top of the adjusting plate, a return spring is installed inside the spring cylinder, and a A spring rod, an impact block is installed at one end of the spring rod, cavity blocks are installed in the front and back of the rectangular frame, a limit spring is installed inside the cavity block, a cross plate is installed at one end of the limit spring, limit rods are installed on the top and bottom of the cross plate, a rectangular slider is installed on the top of the limit rod, a pull plate is installed on the end of the limit rod, a collecting box is plugged into the inside of the rectangular frame, an exhaust port is opened on one side of the collecting box, filter cotton is arranged inside the collecting box, a conveying pipe is arranged on the outer surface of the cylinder, the first return air duct is installed on the outer surfaces of the first classifier, the second classifier and the third classifier, a supersonic nozzle is arranged at the end of the first return air duct, an air inlet duct and a second return air duct are respectively arranged on the outer surface of the first classifier, a one-way valve is arranged inside the second return air duct, a high-pressure induced draft fan is arranged at the end of the air inlet duct, and a positioning block is installed on the top of the collecting box.

[0008] Optionally, a positioning groove is provided on one side of the adjustment plate with the left-right direction as the depth direction and the front-back direction as the length direction. The end of the positioning slider is located inside the positioning groove, and the positioning slider can slide along the length direction of the positioning groove.

[0009] Optionally, the position of the impact block corresponds to the position of the screen, there are several screens, and one end of the spring rod away from the impact block is located inside the spring tube.

[0010] Optionally, a rectangular slide groove is provided inside the cavity block with the up-and-down direction as the depth direction and the front-to-back direction as the length direction. The end of the rectangular slider is located inside the rectangular slide groove, and the rectangular slider can slide along the length direction of the rectangular slide groove.

[0011] Optionally, a positioning groove with the vertical direction as the depth direction is formed at the bottom of the cavity block, and the end of the positioning block is inserted into the interior of the positioning groove.

[0012] Optionally, a limiting groove with the front-to-rear direction as the depth direction is opened inside the positioning block, and the end of the limiting rod away from the pulling plate is inserted into the limiting groove.

[0013] Optionally, there are several first return air ducts and several delivery ducts, one end of the first return air duct away from the supersonic nozzle is connected to the bottom of the first classifier, the second classifier and the third classifier respectively, one end of the second return air duct away from the third classifier is connected to the air inlet duct flange, and one end of the delivery duct away from the cylinder is connected to the second classifier and the third classifier respectively.

[0014] Optionally, a feed pipe is provided on the top of the first classifier, a feed screw cap is provided at the end of the feed pipe, the position of the screen corresponds to the position of the conveying pipe, the position of the filter cotton corresponds to the position of the exhaust port, and a sealing block is provided on the outer surface of the collecting box, which abuts against the inner wall of the rectangular frame.

[0015] (III) Beneficial effects

[0016] The utility model provides a multi-stage high-precision micro-powder airflow pulverizing and classifying machine, which has the following beneficial effects:

[0017] 1. The multi-stage high-precision micro-powder airflow pulverizing and classifying machine has the effect of avoiding the blockage of the screen by arranging the disc, the positioning slider, the T-shaped slider, the adjustment plate and the impact block. The impact block moves back and forth to impact the screen to avoid the blockage of the screen and the influence on the classification of the material. The particles move with the airflow, and when the particles are ejected through the supersonic nozzle, the particles ejected from different supersonic nozzles collide and rub against each other, thereby being crushed into smaller particles. The particles collide with the screen with the airflow, and the qualified particles enter the inside of the collection box through the screen, and the unqualified particles enter the inside of the conveying pipe with the airflow and are crushed inside the next classifier, thereby achieving the purpose of improving practicality.

[0018] 2. The multi-stage high-precision micro-powder airflow pulverizing and classifying machine has the effect of facilitating the removal of collected materials through the arrangement of cavity blocks, limit springs, cross plates, limit rods, rectangular sliders, pull plates and collection boxes. The positioning block plays a role in positioning and installation, and the limit rod plays a role in limiting the position of the positioning block, which is convenient and quick to install. The sealing block improves the sealing of the connection. Conversely, it is convenient and quick to disassemble and remove the collection box to take out the collected materials in the collection box, thereby achieving the purpose of improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the utility model in front view section;

[0021] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4 It is a schematic diagram of the structure of the side cross-section of the utility model;

[0023] Figure 5 For this utility model Figure 4 The enlarged structural diagram at B in the middle;

[0024] Figure 6 For this utility model Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0025] In the figure: 1. first classifier; 2. second classifier; 3. third classifier; 4. cylinder; 5. screen; 6. rectangular frame; 7. strip plate; 8. servo motor; 9. disc; 10. positioning slider; 11. T-shaped slider; 12. adjustment plate; 13. spring cylinder; 14. return spring; 15. spring rod; 16. impact block; 17. cavity block; 18. limit spring; 19. cross plate; 20. limit rod; 21. rectangular slider; 22. pull plate; 23. collection box; 24. filter cotton; 25. conveying pipe; 26. first return air pipe; 27. supersonic nozzle; 28. air inlet pipe; 29. ​​second return air pipe; 30. one-way valve; 31. high-pressure induced draft fan; 32. positioning block; 33. feed pipe; 34. feed screw cap; 35. sealing block. DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1

[0028] See also Figures 1 to 5The utility model provides a technical solution: a multi-stage high-precision micro-powder airflow pulverizing and classifying machine, comprising a first classifier 1, a second classifier 2 and a third classifier 3. A feed pipe 33 is arranged on the top of the first classifier 1, a feed screw cover 34 is arranged on the end of the feed pipe 33, the position of the screen 5 corresponds to the position of the conveying pipe 25, the position of the filter cotton 24 corresponds to the position of the exhaust port, a sealing block 35 is arranged on the outer surface of the collecting box 23, and the sealing block 35 abuts against the inner wall of the rectangular frame 6. A cylinder 4 is installed at the bottom of the first classifier 1, the second classifier 2 and the third classifier 3, a screen 5 is installed inside the cylinder 4, a rectangular frame 6 is installed at the bottom of the cylinder 4, a strip plate 7 is installed inside the rectangular frame 6, a servo motor 8 is installed on one side of the rectangular frame 6, a disc 9 is installed on the output end of the servo motor 8, and a positioning Slider 10, a T-shaped slide groove with the front-to-back direction as the depth direction and the up-to-down direction as the length direction is provided inside the strip plate 7, a T-shaped slide groove is provided inside the T-shaped slide groove, an adjusting plate 12 is installed at the end of the T-shaped slide groove, a side surface of the adjusting plate 12 is provided with a positioning slide groove with the left-right direction as the depth direction and the front-to-back direction as the length direction, the end of the positioning slide groove 10 is located inside the positioning slide groove, the positioning slide groove 10 can slide along the length direction of the positioning slide groove, a spring cylinder 13 is installed on the top of the adjusting plate 12, a return spring 14 is installed inside the spring cylinder 13, a spring rod 15 is installed at one end of the return spring 14, a collision block 16 is installed at one end of the spring rod 15, the position of the collision block 16 corresponds to the position of the screen 5, there are several screens 5, and the end of the spring rod 15 away from the collision block 16 is located inside the spring cylinder 13.

[0029] When in use, open the feed screw cover 34, put the material through the feed pipe 33, the high-pressure induced draft fan 31 starts to work, and air is introduced into the first classifier 1 through the air inlet pipe 28. The dust moves with the movement of the airflow, and part of the dust enters the first return air duct 26 and is sprayed out through the supersonic nozzle 27. The particles sprayed from different supersonic nozzles 27 collide and rub with each other, so as to be crushed into smaller particles. Part of the dust collides with the screen 5 with the airflow, and qualified particles pass through the screen 5 and enter the collection box 23. Part of the wind is discharged through the exhaust port, and the filter cotton 24 blocks the dust. Unqualified particles enter the conveying pipe 25 with the airflow, which facilitates the dust to enter the second classifier 2 with the airflow. The mesh sizes of multiple screens 5 are different. The above steps are repeated inside the second classifier 2. Thereafter, the dust enters the third classifier 3 with the airflow. The above steps are repeated inside the classifier 3. Part of the dust in the third classifier 3 enters the second return air duct 29 with the air flow, enters the air inlet duct 28 through the one-way valve 30 and returns to the first classifier 1 again, thereby improving the effect of particle crushing. The servo motor 8 drives the disc 9 to rotate, and the positioning slider 10 moves in a circle with the center of the disc 9 as the center, and the end of the positioning slider 10 is located inside the positioning chute. The movement of the positioning slider 10 provides a component force in the up and down directions for the adjustment plate 12, and the end of the T-shaped slider 11 is located inside the T-shaped chute, so that the adjustment plate 12 drives the T-shaped slider 11 and the impact block 16 to move, so that the impact block 16 moves back and forth to impact the screen 5 to avoid the screen 5 being blocked. By setting the spring rod 15 and the return spring 14, the rigid collision between the impact block 16 and the screen 5 is avoided, and the damage to the screen 5 is avoided, thereby improving the practicality.

[0030] Example 2

[0031] See also Figures 1 to 6The utility model provides a technical solution: a multi-stage high-precision micro-powder airflow pulverizing and classifying machine, a cavity block 17 is installed in the front and rear of the rectangular frame 6, a rectangular slide groove with the up-down direction as the depth direction and the front-back direction as the length direction is opened inside the cavity block 17, the end of the rectangular slide block 21 is located inside the rectangular slide groove, and the rectangular slide block 21 can slide along the length direction of the rectangular slide groove, a positioning groove with the up-down direction as the depth direction is opened at the bottom of the cavity block 17, and the end of the positioning block 32 is inserted into the inside of the positioning groove, a limiting spring 18 is installed inside the cavity block 17, a cross plate 19 is installed at one end of the limiting spring 18, a limiting rod 20 is installed at the top and bottom of the cross plate 19, a rectangular slide block 21 is installed on the top of the limiting rod 20, and a pull plate 22 is installed at the end of the limiting rod 20, a collecting box 23 is inserted into the inside of the rectangular frame 6, an exhaust port is opened on one side of the collecting box 23, a filter cotton 24 is arranged inside the collecting box 23, and a conveying pipe 25 is arranged on the outer surface of the cylinder 4 The first classifier 1, the second classifier 2 and the third classifier 3 are all equipped with a first return air duct 26 on their outer surfaces. There are several first return air ducts 26 and conveying pipes 25. One end of the first return air duct 26 away from the supersonic nozzle 27 is connected to the bottom of the first classifier 1, the second classifier 2 and the third classifier 3 respectively. One end of the second return air duct 29 away from the third classifier 3 is flange-connected to the air inlet duct 28. One end of the conveying pipe 25 away from the cylinder 4 is connected to the second classifier 2 and the third classifier 3 respectively. A supersonic nozzle 27 is arranged at the end of the first return air duct 26. An air inlet duct 28 and a second return air duct 29 are respectively arranged on the outer surface of the first classifier 1. A one-way valve 30 is arranged inside the second return air duct 29. A high-pressure induced draft fan 31 is arranged at the end of the air inlet duct 28. A positioning block 32 is installed on the top of the collecting box 23. A limiting groove with a depth direction in the front-rear direction is opened inside the positioning block 32. One end of the limiting rod 20 away from the pull plate 22 is inserted into the limiting groove.

[0032] When in use, to remove the collection box 23, pull the pull plate 22, so that the limit rod 20 drives the rectangular slider 21 and the cross plate 19 to move, so that the limit spring 18 is forced to shrink, and the rectangular slider 21 slides along the length direction of the rectangular slide groove, so that the end of the limit rod 20 leaves the limit groove, and then the collection box 23 is moved downward, so that the positioning block 32 leaves the positioning groove, so that the port of the collection box 23 is away from the rectangular frame 6, which is convenient for removing the collection box 23 and taking out the crushed dust collected inside. Box 23, so that the port of the collection box 23 enters the interior of the rectangular frame 6, the sealing block 35 abuts against the inner wall of the rectangular frame 6, and the end of the positioning block 32 enters the interior of the positioning groove. When the end of the positioning block 32 reaches the end of the positioning groove, the limit groove is aligned with the limit rod 20, and the pull plate 22 is released. Through the elastic tension of the limit spring 18, the end of the limit rod 20 is inserted into the interior of the limit groove, which is convenient for limiting the position of the positioning block 32, facilitating the installation of the collection box 23, and improving practicality.

[0033] 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 multi-stage high-precision micro-powder airflow crushing and classifying machine, comprising a first classifier, a second classifier and a third classifier, characterized in that: The first classifier, the second classifier and the third classifier are all provided with a cylinder at the bottom, a screen is provided inside the cylinder, a rectangular frame is provided at the bottom of the cylinder, a strip plate is provided inside the rectangular frame, a servo motor is provided on one side of the rectangular frame, a disc is provided on the output end of the servo motor, a positioning slider is provided on one side of the disc, a T-shaped slide groove is provided inside the strip plate with the front-to-back direction as the depth direction and the up-and-down direction as the length direction, a T-shaped slider is provided inside the T-shaped slide groove, an adjustment plate is provided on the end of the T-shaped slider, a spring cylinder is provided on the top of the adjustment plate, a return spring is provided inside the spring cylinder, a spring rod is provided on one end of the return spring, an impact block is provided on one end of the spring rod, and cavities are provided on the front and back of the rectangular frame A block, a limit spring is installed inside the cavity block, a cross plate is installed at one end of the limit spring, limit rods are installed on the top and bottom of the cross plate, a rectangular slider is installed on the top of the limit rod, a pull plate is installed on the end of the limit rod, a collecting box is plugged into the inside of the rectangular frame, an exhaust port is opened on one side of the collecting box, filter cotton is arranged inside the collecting box, a conveying pipe is arranged on the outer surface of the cylinder, the first return air duct is installed on the outer surfaces of the first classifier, the first return air duct is arranged at the end of the supersonic nozzle, the outer surface of the first classifier is respectively provided with an air inlet duct and a second return air duct, a one-way valve is arranged inside the second return air duct, a high-pressure induced draft fan is arranged at the end of the air inlet duct, and a positioning block is installed on the top of the collecting box.

2. A multi-stage high-precision micro powder airflow pulverizing and classifying machine according to claim 1, characterized in that: A positioning slide groove is provided on one side of the adjustment plate with the left-right direction as the depth direction and the front-back direction as the length direction. The end of the positioning slide block is located inside the positioning slide groove, and the positioning slide block can slide along the length direction of the positioning slide groove.

3. A multi-stage high-precision micro powder airflow pulverizing and classifying machine according to claim 1, characterized in that: The position of the impact block corresponds to the position of the screen, and there are several screens. One end of the spring rod away from the impact block is located inside the spring tube.

4. A multi-stage high-precision micro powder airflow pulverizing and classifying machine according to claim 1, characterized in that: A rectangular slide groove is provided inside the cavity block with the up-and-down direction as the depth direction and the front-and-back direction as the length direction. The end of the rectangular slider is located inside the rectangular slide groove, and the rectangular slider can slide along the length direction of the rectangular slide groove.

5. The multi-stage high-precision micro powder airflow pulverizing and classifying machine according to claim 1, characterized in that: A positioning groove with the up-down direction as the depth direction is opened at the bottom of the cavity block, and the end of the positioning block is inserted into the interior of the positioning groove.

6. A multi-stage high-precision micro powder airflow pulverizing and classifying machine according to claim 1, characterized in that: A limiting groove with the front-to-back direction as the depth direction is provided inside the positioning block, and one end of the limiting rod away from the pulling plate is inserted into the limiting groove.

7. The multi-stage high-precision micro powder airflow pulverizing and classifying machine according to claim 1, characterized in that: There are several first return air ducts and delivery ducts. One end of the first return air duct away from the supersonic nozzle is connected to the bottom of the first classifier, the second classifier and the third classifier respectively. One end of the second return air duct away from the third classifier is connected to the air inlet duct flange. One end of the delivery duct away from the cylinder is connected to the second classifier and the third classifier respectively.

8. The multi-stage high-precision micro powder airflow pulverizing and classifying machine according to claim 1, characterized in that: A feed pipe is arranged on the top of the first classifier, a feed screw cap is arranged at the end of the feed pipe, the position of the screen corresponds to the position of the conveying pipe, the position of the filter cotton corresponds to the position of the exhaust port, and a sealing block is arranged on the outer surface of the collecting box, which abuts against the inner wall of the rectangular frame.

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