Dust collection type jet mill

Abstract

The utility model discloses a dust collection type jet mill which comprises a base, a crushing kettle body is installed on the right portion of the upper end of the base, a jet milling device is installed on the lower portion of the outer surface of the crushing kettle body, a spiral conveyor is installed on the lower portion of the right end of the crushing kettle body, and a screening device is installed at the upper end of the crushing kettle body. A discharging connecting pipe is installed at the upper end of the screening device, a discharging device is installed at the end, away from the screening device, of the discharging connecting pipe, and a bag-type dust collector is installed at the lower end of the discharging device and installed on the left portion of the upper end of the base. According to the dust collection type jet mill disclosed by the utility model, the mounting seats can be pulled out of the mounting grooves in the mounting frame by loosening the mounting screws, and then the corresponding screening plates are mounted in the mounting frame, so that the screening plates are convenient to mount and dismount, and the device can adjust the screening specification according to the requirements of materials; and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of airflow pulverizers, in particular to a dust-collecting airflow pulverizer. Background Art

[0002] The air flow mill is a machine that accelerates compressed air into a supersonic airflow through a Laval nozzle and then injects it into the crushing area to fluidize the material (the airflow expands into a fluidized bed, suspends and boils and collides with each other). In the crushing area, the accelerated particles collide and crush each other at the intersection of each nozzle. The crushed material is transported to the classification area by the rising airflow, and the fine powder that meets the particle size requirement is screened out by the horizontally arranged classification wheel, and the coarse powder that does not meet the particle size requirement is returned to the crushing area for further crushing.

[0003] Most existing airflow pulverizers are equipped with screening devices to screen fine powders that meet the particle size requirements. Powders with larger particle sizes will be returned to the crushing area for further crushing. However, the screening specifications of the screening device are fixed, and it is difficult to adjust its screening specifications according to needs, especially for different materials, the degree of crushing required is also different, resulting in certain limitations in the use of the screening device: In addition, when the material is crushed and poured out, it will be accompanied by some fine dust. If it is discharged directly, it will not only endanger the health of the workers, but also pollute the environment. In summary, the existing airflow pulverizers still have the following problems:

[0004] 1. It is difficult to adjust the screening specifications of the screening device according to the needs of the material, resulting in certain limitations in its use; 2. When the material is crushed and poured out, it will be accompanied by some fine dust, which not only endangers the health of the workers, but also pollutes the environment. Utility Model Content

[0005] The main purpose of the utility model is to provide a dust collecting type air flow pulverizer, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A dust-collecting airflow pulverizer comprises a base, a pulverizing kettle body is installed at the right upper end of the base, an airflow pulverizing device is installed at the lower outer surface of the pulverizing kettle body, a screw conveyor is installed at the lower right end of the pulverizing kettle body, a screening device is installed at the upper end of the pulverizing kettle body, a discharge connecting pipe is installed at the upper end of the screening device, a discharge device is installed at the end of the discharge connecting pipe away from the screening device, a bag dust collector is installed at the lower end of the discharge device, and the bag dust collector is installed at the left upper end of the base.

[0008] Preferably, the screening device includes a mounting frame and a mounting seat, the mounting frame has a mounting slot at the right end, the mounting frame is installed with mounting screws at the front right and rear right parts, a screening plate is installed at the middle of the upper end of the mounting seat, a sealing ring is installed at the right part of the outer surface of the mounting seat, the mounting seat has screw holes at the front right and rear right parts, the mounting seat is installed in the mounting frame by means of mounting screws, and the mounting frame is installed at the upper end of the crushing kettle body. By loosening the mounting screws, the mounting seat can be pulled out of the mounting slot on the mounting frame, and then the corresponding screening plate can be installed in the mounting frame, which not only makes the installation and removal of the screening plate convenient, but also enables the device to adjust the screening specifications according to the needs of the material, thereby improving the practicality of the device.

[0009] Preferably, the discharge device includes a connection box, a connection slot is provided in the middle of the upper end of the connection box, a material receiving box is installed in the connection box, a plurality of filter holes are provided on the lower inner wall of the material receiving box, and the connection box is installed on the upper end of the bag dust collector. After being crushed, the material enters the connection box through the discharge connection pipe, and the material is then accumulated in the material receiving box, and the dust can be blown into the bag dust collector at the bottom through the filter holes on the material receiving box, and the dust is filtered by the bag dust collector to avoid direct discharge of dust that affects the environment.

[0010] Preferably, the air flow pulverizing device comprises a connecting ring, an air inlet is installed at the right end of the connecting ring, a plurality of air flow nozzles are installed on the inner wall of the connecting ring, and the connecting ring is installed at the lower part of the outer surface of the pulverizing kettle. The air inlet is connected to an external air pump, and the air pump introduces compressed air into the air flow nozzle on the connecting ring, and the air flow nozzle sprays compressed gas to pulverize the material.

[0011] Preferably, the mounting screw is consistent with the screw hole in size and has corresponding front and back positions.

[0012] Preferably, a plurality of the air flow nozzles are distributed on the inner wall of the connecting ring in a circular array.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. When it is necessary to perform air flow crushing on the material, firstly, the material is introduced into the crushing kettle through the screw conveyor. At this time, it is connected to the external air pump through the air inlet on the air flow crushing device. The air pump introduces the compressed air into the air flow nozzle on the connecting ring. The air flow nozzle sprays the compressed gas to crush the material. At this time, the crushed material rises to the screening plate on the screening device with the air flow. The material that meets the requirements of the crushing specifications will pass through the screening plate, and the material that does not meet the requirements will be filtered by the screening plate and crushed again. When the crushed materials are different and the required specifications of the screening plate need to be adjusted, the mounting seat can be pulled out of the mounting slot on the mounting frame by loosening the mounting screws, and then the corresponding screening plate can be installed in the mounting frame. Not only is the installation and disassembly of the screening plate convenient, but the device can also adjust the screening specifications according to the needs of the material, thereby improving the practicality of the device.

[0015] 2. After the crushing, the material enters the connection box on the discharging device through the discharging connecting pipe. At this time, the material is accumulated in the receiving box, and the dust can be blown into the bag dust collector at the bottom through the filter holes on the receiving box. The dust is filtered by the bag dust collector to avoid direct discharge of dust that affects the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a dust-collecting airflow pulverizer of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of a screening device of a dust-collecting airflow pulverizer of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall structure of a discharge device of a dust-collecting airflow pulverizer of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall structure of an airflow pulverizing device of a dust-collecting airflow pulverizer of the utility model.

[0020] In the figure: 1. base; 2. screening device; 3. discharging device; 4. air flow crushing device; 5. crushing kettle; 6. screw conveyor; 7. discharging connecting pipe; 8. bag filter; 20. mounting frame; 21. mounting seat; 22. mounting screws; 23. mounting groove; 24. screening plate; 25. screw hole; 26. sealing ring; 30. connecting box; 31. receiving box; 32. connecting groove; 33. filter hole; 40. connecting ring; 41. air inlet; 42. air flow nozzle. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-4 As shown, a dust-collecting airflow pulverizer includes a base 1, a pulverizing kettle body 5 is installed on the right upper end of the base 1, an airflow pulverizing device 4 is installed on the lower outer surface of the pulverizing kettle body 5, a screw conveyor 6 is installed on the lower right end of the pulverizing kettle body 5, a screening device 2 is installed on the upper end of the pulverizing kettle body 5, a discharge connecting pipe 7 is installed on the upper end of the screening device 2, a discharge device 3 is installed on the end of the discharge connecting pipe 7 away from the screening device 2, a bag dust collector 8 is installed on the lower end of the discharge device 3, and the bag dust collector 8 is installed on the left upper end of the base 1.

[0025] The screening device 2 includes a mounting frame 20 and a mounting seat 21. The mounting frame 20 has a mounting groove 23 at the right end. The mounting frame 20 has mounting screws 22 installed at the right front end and the right rear end. A screening plate 24 is installed at the middle of the upper end of the mounting seat 21. A sealing ring 26 is installed at the right outer surface of the mounting seat 21. The mounting seat 21 has screw holes 25 at the right front end and the right rear end. The mounting seat 21 is installed in the mounting frame 20 through the mounting screws 22. The mounting frame 20 is installed at the upper end of the crushing kettle body 5. The mounting screws 22 and the screw holes 25 are of the same size and have corresponding positions. By loosening the mounting screws 22, the mounting seat 21 can be pulled out of the mounting groove 23 on the mounting frame 20, and then the corresponding screening plate 24 can be installed in the mounting frame 20. This not only makes it convenient to install and disassemble the screening plate 24, but also allows the device to adjust the screening specifications according to the needs of the material, thereby improving the practicality of the device.

[0026] The discharge device 3 includes a connection box 30, a connection slot 32 is provided in the middle of the upper end of the connection box 30, a material receiving box 31 is installed in the connection box 30, a plurality of filter holes 33 are provided on the lower inner wall of the material receiving box 31, and the connection box 30 is installed on the upper end of the bag dust collector 8. The crushed material enters the connection box 30 through the discharge connection pipe 7, and the material is then accumulated in the material receiving box 31, and the dust can be blown into the lower bag dust collector 8 through the filter holes 33 on the material receiving box 31, and the dust is filtered by the bag dust collector 8 to prevent the direct discharge of dust from affecting the environment.

[0027] The air flow pulverizing device 4 includes a connecting ring 40, an air inlet 41 is installed at the right end of the connecting ring 40, and a plurality of air flow nozzles 42 are installed on the inner wall of the connecting ring 40. The connecting ring 40 is installed at the lower part of the outer surface of the pulverizing kettle body 5; the plurality of air flow nozzles 42 are distributed in a circular array on the inner wall of the connecting ring 40. The air inlet 41 is connected to an external air pump, and the air pump introduces compressed air into the air flow nozzles 42 on the connecting ring 40, and the air flow nozzles 42 spray compressed gas to pulverize the material.

[0028] It should be noted that the utility model is a dust-collecting airflow pulverizer. When it is necessary to pulverize the material by airflow, the material is first introduced into the pulverizing kettle 5 through the screw conveyor 6. At this time, the air inlet 41 on the airflow pulverizing device 4 is connected to the external air pump. The air pump introduces the compressed air into the airflow nozzle 42 on the connecting ring 40. The airflow nozzle 42 sprays the compressed gas to pulverize the material. At this time, the pulverized material rises with the airflow to the screening plate 24 on the screening device 2. The material that meets the required pulverization specifications will pass through the screening plate 24, and the material that does not meet the requirements will be pulverized again after passing through the screening plate 24. When the pulverized materials are different, the required screening When the specifications of the dividing plate 24 need to be adjusted, the mounting seat 21 can be pulled out of the mounting slot 23 on the mounting frame 20 by loosening the mounting screws 22, and then the corresponding screening plate 24 can be installed in the mounting frame 20, which not only makes the installation and disassembly of the screening plate 24 convenient, but also the device can adjust the screening specifications according to the needs of the material, thereby improving the practicality of the device. After the crushing, the material enters the connecting box 30 on the discharging device 3 through the discharging connecting pipe 7. At this time, the material is accumulated in the receiving box 31, and the dust can be blown into the lower bag dust collector 8 through the filter hole 33 on the receiving box 31, and the dust is filtered by the bag dust collector 8 to avoid direct dust discharge that affects the environment.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A dust collecting type air flow pulverizer, comprising a base (1), characterized in that: A crushing kettle (5) is installed at the right upper end of the base (1); an air flow crushing device (4) is installed at the lower outer surface of the crushing kettle (5); a screw conveyor (6) is installed at the lower right end of the crushing kettle (5); a screening device (2) is installed at the upper end of the crushing kettle (5); a discharge connecting pipe (7) is installed at the upper end of the screening device (2); a discharge device (3) is installed at the end of the discharge connecting pipe (7) away from the screening device (2); a bag dust collector (8) is installed at the lower end of the discharge device (3); and the bag dust collector (8) is installed at the left upper end of the base (1).

2. A dust collecting type air flow pulverizer according to claim 1, characterized in that: The screening device (2) comprises a mounting frame (20) and a mounting seat (21); a mounting groove (23) is provided at the right end of the mounting frame (20); mounting screws (22) are installed at the right front end and the right rear end of the mounting frame (20); a screening plate (24) is installed at the middle of the upper end of the mounting seat (21); a sealing ring (26) is installed at the right outer surface of the mounting seat (21); screw holes (25) are provided at the right front end and the right rear end of the mounting seat (21); the mounting seat (21) is installed in the mounting frame (20) by means of the mounting screws (22); and the mounting frame (20) is installed at the upper end of the crushing kettle body (5).

3. The dust collecting type air flow pulverizer according to claim 1, characterized in that: The discharge device (3) comprises a connection box (30), a connection groove (32) is formed in the middle of the upper end of the connection box (30), a material receiving box (31) is installed in the connection box (30), a plurality of filter holes (33) are formed on the lower inner wall of the material receiving box (31), and the connection box (30) is installed on the upper end of the bag dust collector (8).

4. The dust collecting type air flow pulverizer according to claim 1, characterized in that: The air flow pulverizing device (4) comprises a connecting ring (40), an air inlet (41) is installed at the right end of the connecting ring (40), a plurality of air flow nozzles (42) are installed on the inner wall of the connecting ring (40), and the connecting ring (40) is installed at the lower part of the outer surface of the pulverizing kettle body (5).

5. The dust collecting type air flow pulverizer according to claim 2, characterized in that: The mounting screw (22) and the screw hole (25) have the same size and are positioned correspondingly in the front and back directions.

6. A dust collecting type air flow pulverizer according to claim 4, characterized in that: A plurality of air flow nozzles (42) are distributed in a ring array on the inner wall of the connecting ring (40).

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