Powder crushing and grading device

Abstract

The utility model provides a powder crushing and grading device, belongs to the technical field of powder crushing, and solves the problem of poor powder collection effect in the prior art. The device comprises a box body, a discharging pipe is obliquely arranged on the side wall of the box body, a negative pressure suction pipe located above the discharging pipe is arranged on the box body, a rotating shaft is vertically and rotatably arranged in the box body, the rotating shaft is connected with a motor, the rotating shaft is fixedly sleeved with a rotating disc located between the discharging pipe and the negative pressure suction pipe, and a plurality of crushing teeth are connected to the rotating disc in the circumferential direction. The negative pressure suction pipe enables negative pressure to be generated in the box body, so that powder in the discharging pipe is sucked out, the powder moves upwards after entering the box body and makes contact with the crushing teeth rotating at a high speed in the moving process, the crushing teeth strike the powder to enable the powder to become particles smaller in size, and finally the powder is sucked away and collected by the negative pressure suction pipe. According to the crushing and grading device, crushed powder can be well collected.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder crushing, in particular to a powder crushing and grading device. Background Art

[0002] Crusher is a kind of pulverizing machine widely used in product processing. Crusher crushes materials to make them smaller in size to meet production needs.

[0003] The traditional crushing device is to put the material from top to bottom, and the material is processed by the crushing mechanism and then screened, and the material under the screen is the material that meets the size requirements. However, when crushing light powder, the traditional crushing device has disadvantages: in the process of putting from top to bottom, the powder will be lifted up due to its light weight, and the crushing mechanism will always drive the powder to move during the high-speed rotation process, and the crushed powder will also be lifted up and will not be screened, resulting in unsatisfactory powder collection effect. Therefore, a crushing and grading device suitable for powder is needed. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a powder crushing and grading device. The negative pressure suction pipe creates negative pressure in the box, thereby sucking out the powder in the discharge pipe. After the powder enters the box, it moves upward, and comes into contact with the high-speed rotating crushing teeth during the movement. The crushing teeth hit the powder to turn it into smaller particles. Finally, the powder is sucked away and collected by the negative pressure suction pipe. Compared with the traditional crushing device, the crushing and grading device of the present application can collect the crushed powder well.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A powder crushing and grading device comprises a box body, a feeding pipe is obliquely arranged on the side wall of the box body, a negative pressure suction pipe is arranged on the box body and is located above the feeding pipe, a rotating shaft is vertically rotated in the box body, the rotating shaft is connected to a motor, a turntable is fixedly sleeved on the rotating shaft and is located between the feeding pipe and the negative pressure suction pipe, and a plurality of crushing teeth are connected on the circumference of the turntable.

[0007] Preferably, the thickness of one end of the crushing tooth is greater than that of the other end, and the end with the larger thickness is mounted on the rotating disk.

[0008] Preferably, bolts are provided on the crushing teeth, and the crushing teeth are detachably connected to the rotating disk via the bolts.

[0009] Preferably, a clamping groove is provided on the crushing tooth, and a mounting groove for clamping the crushing tooth is provided on the turntable.

[0010] Preferably, an annular baffle plate is provided on the inner wall of the box body and is located above the crushing teeth, and the lower surface of the annular baffle plate is arc-shaped and curved toward the direction of the rotating disk.

[0011] Preferably, a conical cylinder located above the annular baffle is provided on the inner wall of the box body, and the lower end of the conical cylinder is connected to the annular baffle.

[0012] Preferably, a discharge pipe is connected to the bottom of the box, and the discharge pipe is provided with a valve.

[0013] Preferably, the bottom of the box is inclined toward the direction of the discharge pipe, and a vibration device is provided at the bottom of the box.

[0014] Preferably, the crushing teeth are made of ThyssenKrupp wear-resistant steel.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] The negative pressure suction pipe creates negative pressure in the box, thereby sucking out the powder in the discharge pipe. After the powder enters the box, it moves upward, and during the movement it comes into contact with the high-speed rotating crushing teeth. The crushing teeth hit the powder to turn it into smaller particles. Finally, the powder is sucked away and collected by the negative pressure suction pipe. Compared with the traditional crushing device, the crushing and grading device of the present application can collect the crushed powder well. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a cross-sectional structure provided for an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of a top view of a turntable provided in an embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of a crushing tooth provided in an embodiment of the utility model.

[0021] Description of the drawings: 1-box; 2-negative pressure suction pipe; 3-motor; 4-rotating shaft; 5-conical cylinder; 6-feeding pipe; 7-discharging pipe; 8-vibrating device; 9-annular baffle; 10-bolt; 11-crushing tooth; 12-turntable; 13-installation slot; 14-card slot. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] Combine the following Figure 1-Figure 3 The utility model is described in detail.

[0026] Example

[0027] A powder crushing and grading device comprises a box body 1, a feeding pipe 6 is obliquely arranged on the side wall of the box body 1, a negative pressure suction pipe 2 is arranged on the box body 1 and is located above the feeding pipe 6, a rotating shaft 4 is vertically rotatably arranged in the box body 1, the rotating shaft 4 is connected to a motor 3, a rotating disk 12 is fixedly sleeved on the rotating shaft 4 and is located between the feeding pipe 6 and the negative pressure suction pipe 2, and a plurality of crushing teeth 11 are connected to the circumference of the rotating disk 12.

[0028] The negative pressure suction pipe 2 creates negative pressure in the box 1, thereby sucking out the powder in the discharge pipe 6. After the powder enters the box 1, it moves upward, and during the movement, it comes into contact with the high-speed rotating crushing teeth 11. The crushing teeth 11 hit the powder to turn it into smaller particles. Finally, the powder is sucked away and collected by the negative pressure suction pipe 2.

[0029] like Figure 3As shown, the thickness of one end of the crushing tooth 11 is greater than that of the other end, and the end with the larger thickness is mounted on the rotating disk 12. The end of the crushing tooth 11 connected to the rotating disk 12 has a large size, so that the connection between the crushing tooth 11 and the rotating disk 12 can withstand a higher load, and the other end has a small size, which reduces the load of the crushing tooth 11 during high-speed rotation.

[0030] The crushing teeth 11 are provided with bolts 10, and the crushing teeth 11 are detachably connected to the rotating disk 12 through the bolts 10, so as to facilitate the later replacement of the damaged crushing teeth 11. The bolts 10 are 10.9 grade high-strength bolts.

[0031] The crushing tooth 11 is provided with a clamping groove 14, and the rotating disk 12 is provided with a mounting groove 13 for clamping the crushing tooth 11. The clamping groove 14 can make the end of the crushing tooth 11 clamped on the rotating disk 12, and the mounting groove 13 limits the end of the crushing tooth 11, so that the crushing tooth 11 can withstand a large alternating load and improve the impact resistance.

[0032] An annular baffle 9 is provided on the inner wall of the box body 1 and is located above the crushing teeth 11. The lower surface of the annular baffle 9 is arc-shaped and curved toward the turntable 12. The annular baffle 9 conducts the crushed powder to the turntable 12 through the arc-shaped surface. During the conduction process, some uncrushed powder will enter the movement area of ​​the crushing teeth 11 again for crushing, while the lighter powder will adhere to the surface of the annular baffle 9 and move toward the negative pressure suction pipe 2.

[0033] The inner wall of the box body 1 is provided with a conical cylinder 5 located above the annular baffle 9, and the lower end of the conical cylinder 5 is connected to the annular baffle 9. The conical cylinder 5 shields the dead angle above the annular baffle 9, which is convenient for the subsequent cleaning of the inner wall of the box body 1.

[0034] The bottom of the box body 1 is connected with a discharge pipe 7, and a valve is provided on the discharge pipe 7. Some heavy powders are accumulated at the bottom of the box body 1, and are discharged from the discharge pipe 7 after a certain amount of powders are accumulated.

[0035] The bottom of the box body 1 is inclined toward the discharge pipe 7, and a vibrating device 8 is provided at the bottom of the box body 1. The vibrating device 8 generates vibration to move the powder and collect it at the discharge pipe 7, which facilitates the discharge of the powder.

[0036] The crushing teeth 11 are made of ThyssenKrupp wear-resistant steel, which has good wear resistance, high strength and good toughness, and can ensure the service life of the crushing teeth 11.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A powder crushing and grading device, comprising a housing (1), characterized in that: A feeding pipe (6) is obliquely arranged on the side wall of the box body (1), a negative pressure suction pipe (2) is arranged on the box body (1) and is located above the feeding pipe (6), a rotating shaft (4) is arranged in the box body (1) for vertical rotation, the rotating shaft (4) is connected to a motor (3), a rotating disk (12) is fixedly sleeved on the rotating shaft (4) and is located between the feeding pipe (6) and the negative pressure suction pipe (2), and a plurality of crushing teeth (11) are connected to the circumference of the rotating disk (12).

2. A powder crushing and grading device according to claim 1, characterized in that: The thickness of one end of the crushing tooth (11) is greater than that of the other end, and the end with the greater thickness is mounted on the rotating disk (12).

3. A powder crushing and grading device according to claim 1, characterized in that: The crushing teeth (11) are provided with bolts (10), and the crushing teeth (11) are detachably connected to the rotating disk (12) via the bolts (10).

4. A powder crushing and grading device according to claim 3, characterized in that: The crushing tooth (11) is provided with a clamping groove (14), and the rotating disk (12) is provided with a mounting groove (13) for clamping the crushing tooth (11).

5. The powder crushing and grading device according to claim 1, characterized in that: An annular baffle (9) is arranged on the inner wall of the box body (1) and is located above the crushing teeth (11). The lower surface of the annular baffle (9) is arc-shaped and is bent towards the rotating disk (12).

6. A powder crushing and grading device according to claim 5, characterized in that: A conical cylinder (5) is arranged on the inner wall of the box body (1) and is located above the annular baffle (9). The lower end of the conical cylinder (5) is connected to the annular baffle (9).

7. The powder crushing and grading device according to claim 1, characterized in that: The bottom of the box body (1) is connected to a discharge pipe (7), and the discharge pipe (7) is provided with a valve.

8. A powder crushing and grading device according to claim 7, characterized in that: The bottom of the box body (1) is arranged to be inclined in the direction of the discharge pipe (7), and a vibration device (8) is arranged at the bottom of the box body (1).

9. The powder crushing and grading device according to claim 1, characterized in that: The crushing teeth (11) are made of ThyssenKrupp wear-resistant steel.

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