Adjustable powder coating airflow pulverizer

Abstract

The utility model relates to the technical field of airflow flour mills, in particular to an adjustable powder coating airflow flour mill which is characterized in that powder coating is placed in a feeding mechanism, hot air is discharged into the feeding mechanism by starting a drying mechanism, and the powder coating in the feeding mechanism is dried; the crushing speed of the powder coating is increased by starting the grinding mechanism, and crushed powder is discharged into the screening mechanism and is subjected to grading screening through the screening mechanism, so that the practicability of the equipment is improved; comprising a feeding mechanism; the device further comprises a drying mechanism, a grinding mechanism, an air supply mechanism, a condensation mechanism and a screening mechanism, the feeding mechanism is installed on the grinding mechanism, the drying mechanism is installed in the feeding mechanism, the air supply mechanism is installed on the grinding mechanism and located on the right side of the feeding mechanism, the condensation mechanism is installed on the air supply mechanism, and the screening mechanism is located below the feeding mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of airflow mill, in particular to a kind of adjustable powder coating airflow mill. BACKGROUND

[0002] Powder coating is a kind of 100% solid powder coating without solvent, which is mainly composed of resin, pigment, filler and additive etc.;This coating is attached to the workpiece surface by air as dispersion medium through electrostatic spraying and other ways, and then forms a solid coating film after heating and curing. Powder coating has many advantages, such as environmental protection, no pollution, high utilization rate, excellent film performance and convenient construction, etc.

[0003] For example, the airflow mill disclosed in the utility model patent with application number CN202322152976.8 is representative of one type of prior art, which mainly includes feed inlet, air inlet, discharge outlet, supporting leg, bearing, connecting rod and stirring blade, etc. The function of the airflow mill is realized by the cooperation of the structures such as feed inlet, air inlet, discharge outlet, supporting leg, bearing, connecting rod and stirring blade.

[0004] In the process of grinding powder coating by traditional airflow mill, the powder coating may be wet during long-term storage, and the traditional airflow mill only breaks the powder coating by mutual collision driven by airflow during grinding process, which is not efficient. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a kind of adjustable powder coating airflow mill, which places powder coating in the feeding mechanism, starts the drying mechanism to discharge hot air into the feeding mechanism, dries the powder coating in the feeding mechanism, starts the grinding mechanism to accelerate the breaking speed of powder coating, and discharges the broken powder into the screening mechanism, which is classified and screened by the screening mechanism, to improve the practicability of the equipment.

[0006] The utility model discloses a adjustable powder coating airflow mill, including feeding mechanism, still including drying mechanism, powder grinding mechanism, gas supply mechanism, condensing mechanism and screening mechanism, and the feeding mechanism is installed on the powder grinding mechanism, and the drying mechanism is installed in the inside of feeding mechanism, and the gas supply mechanism is installed on the powder grinding mechanism, and the gas supply mechanism is located at the right side of feeding mechanism, and the condensing mechanism is installed on the gas supply mechanism, and the screening mechanism is located below the feeding mechanism, place the powder coating in the feeding mechanism, and the hot air is arranged to the feeding mechanism through the starting drying mechanism, and the powder coating in the feeding mechanism is dried, and the dried powder coating is arranged to the powder grinding mechanism through the feeding mechanism, and the air is arranged to the powder grinding mechanism through the starting gas supply mechanism, and the broken speed of powder coating is accelerated through the starting powder grinding mechanism, and the broken powder is arranged to the screening mechanism, and is classified and screened through the screening mechanism, and the practicability of equipment is improved.

[0007] Preferably, the feeding mechanism includes a feed pipe, a feeding barrel and an exhaust pipe, the output end of the feed pipe is connected with the top end of the feeding barrel, a valve is arranged on the output end of the feeding barrel, and the input end of the exhaust pipe is connected with the outer wall of the feeding barrel; the powder coating raw material is arranged into the feeding barrel through the feed pipe, dried in the feeding barrel, and the excess gas in the feeding barrel is discharged through the exhaust pipe, thereby improving the practicability of the equipment.

[0008] Preferably, the drying mechanism includes a first air pump, a heating box, a gas supply pipe, a rotary joint, a rotary pipe, a plurality of exhaust blades, two sets of gears and a first motor, a filter element is arranged on the input end of the first air pump, the output end of the first air pump is connected with the input end of the heating box, the output end of the heating box is connected with the input end of the gas supply pipe, the output end of the gas supply pipe is connected with the input end of the rotary joint, the output end of the rotary joint is connected with the input end of the rotary pipe, a plurality of output ends are arranged on the rotary pipe, the input ends of the plurality of rotary pipes are installed on the plurality of output ends of the rotary pipe, and the plurality of exhaust blades are respectively provided with exhaust holes, the inner circle of one of the exhaust blades is installed on the upper part of the rotary pipe, the inner circle of the other gear is installed on the output end of the first motor, and the outer circles of the two sets of gears are meshed with each other; the air is arranged into the heating box through the starting first air pump, the air is heated through the heating box, the heated air is arranged into the rotary pipe through the gas supply pipe and the rotary joint, and the powder coating raw material in the feeding barrel is dried through the exhaust of the plurality of exhaust blades, the rotary pipe is rotated through the meshing of the two sets of gears through the starting first motor, the powder coating raw material is stirred through the plurality of exhaust blades, the powder coating raw material is dried uniformly, and the practicability of the equipment is improved.

[0009] Preferably, the powder grinding mechanism comprises a workbench, a powder grinding barrel, a first screening plate, a second motor, a gearbox, a rotating shaft, a plurality of crushing plates and a shovel, the workbench is internally provided with a cavity, the powder grinding barrel is installed at the top end of the workbench, the first screening plate is installed on the inner wall of the lower part of the powder grinding barrel, the second motor and the gearbox are both installed at the top end of the powder grinding barrel, the input end of the gearbox is connected with the output end of the gearbox, the top end of the rotating shaft is installed at the output end of the gearbox, a plurality of gearboxes are arranged on the gearbox, and the shovel is installed on the rotating shaft and located below the plurality of crushing plates; the workbench supports the powder grinding barrel, the powder coating is discharged into the powder grinding barrel, the powder coating is crushed by starting the air supply mechanism, the rotating shaft is rotated by starting the second motor through the gearbox, the powder coating is crushed by the cooperation of the plurality of crushing plates and the air supply mechanism, the powder coating is screened by the first screening plate, and the large-particle powder coating on the upper part of the first screening plate is lifted for crushing again by the shovel, thereby improving the practicability of the equipment.

[0010] Preferably, the air supply mechanism comprises an air inlet pipe, a cooling pipe, a second air pump, a shunt pipe, a plurality of annular pipes and a plurality of high-pressure nozzles, the air inlet pipe is internally provided with a filter element, the output end of the air inlet pipe is connected with the input end of the cooling pipe, the output end of the cooling pipe is connected with the input end of the second air pump, the output end of the second air pump is connected with the input end of the shunt pipe, the shunt pipe is provided with a plurality of output ends, the input ends of the plurality of annular pipes are respectively connected with the plurality of output ends of the shunt pipe, a plurality of output ends are respectively arranged on the plurality of annular pipes, and the input ends of the plurality of high-pressure nozzles are respectively installed on the plurality of output ends of the plurality of annular pipes; air is discharged into the cooling pipe by starting the second air pump, condensation is carried out in the cooling pipe, the air is dried, the dried gas is respectively discharged into the annular pipes through the shunt pipe, and the powder coating is crushed by being high-speed discharged through the plurality of high-pressure nozzles, thereby improving the practicability of the equipment.

[0011] Preferably, the condensing mechanism comprises a heat exchange pipe, a refrigeration box, a baffle, a liquid discharge pipe and a collection barrel, the heat exchange pipe is installed on the outer wall of the cooling pipe, the input end of the heat exchange pipe is connected with the output end of the refrigeration box, the output end of the heat exchange pipe is connected with the input end of the refrigeration box, the baffle is installed on the inner wall of the cooling pipe, the input end of the liquid discharge pipe is connected with the outer wall of the refrigeration box and located below the baffle, and the output end of the liquid discharge pipe is connected with the input end of the collection barrel; the liquid in the heat exchange pipe is refrigerated by starting the refrigeration box, the cooling pipe is refrigerated through the heat exchange pipe, the water vapor in the air in the cooling pipe is condensed, the condensed water droplets are discharged into the collection barrel through the baffle and the liquid discharge pipe, and the practicability of the equipment is improved.

[0012] Preferably, the screening mechanism comprises a screening box, a second screening plate, a powder discharging plate and two groups of powder discharging ports, the second screening plate is obliquely arranged on the inner wall of the screening box, the powder discharging plate is arranged at the bottom end of the inner wall of the screening box, and the input ends of the plurality of powder discharging ports are arranged on the left side wall of the screening box; the broken powder coating is discharged into the screening box, and the powder coating is screened by the second screening plate, the large-particle powder coating is discharged through one of the powder discharging ports, and the small-particle powder is discharged through the powder discharging plate and the other powder discharging ports, thereby improving the practicability of the equipment.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the powder coating is placed in the feeding mechanism, hot air is discharged into the feeding mechanism by starting the drying mechanism, the powder coating in the feeding mechanism is dried, the dried powder coating is discharged into the grinding mechanism through the feeding mechanism, air is dried by starting the air supply mechanism and the condensing mechanism, air is discharged into the grinding mechanism by starting the air supply mechanism, the crushing speed of the powder coating is accelerated by starting the grinding mechanism, the crushed powder is discharged into the screening mechanism, the powder is classified and screened through the screening mechanism, and the practicability of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the axial section view of the utility model;

[0015] Figure 2 is the axial schematic view of the feeding mechanism of the utility model;

[0016] Figure 3 is the axial schematic view of the drying mechanism of the utility model;

[0017] Figure 4 is the front view of the grinding mechanism of the utility model;

[0018] Figure 5 is the axial section view of the air supply mechanism and the condensing mechanism of the utility model;

[0019] Figure 6 is the front view of the screening mechanism of the utility model.

[0020] In the attached diagram, the following are labeled: 01, feeding mechanism; 11, feed pipe; 12, feeding hopper; 13, exhaust pipe; 02, drying mechanism; 21, first air pump; 22, heating box; 23, air supply pipe; 24, rotary joint; 25, rotary pipe; 26, exhaust blade; 27, gear; 28, first motor; 03, grinding mechanism; 31, workbench; 32, grinding hopper; 33, first screening plate; 34, second motor; 35, gearbox; 36. 37. Rotating shaft; 38. Crushing plate; 49. Bucket; 40. Air supply mechanism; 41. Air inlet pipe; 42. Cooling pipe; 43. Second air pump; 44. Diverter pipe; 45. Annular pipe; 46. High-pressure nozzle; 57. Condensation mechanism; 58. Heat exchanger pipe; 59. Refrigeration box; 50. Baffle plate; 51. Drain pipe; 52. Collection bucket; 63. Screening mechanism; 64. Screening box; 65. Second screening plate; 66. Powder discharge plate; 67. Powder discharge port. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0022] like Figure 1 As shown, an adjustable powder coating airflow mill includes a feeding mechanism 01; it also includes a drying mechanism 02, a grinding mechanism 03, an air supply mechanism 04, a condensation mechanism 05, and a screening mechanism 06. The feeding mechanism 01 is installed on the grinding mechanism 03, the drying mechanism 02 is installed inside the feeding mechanism 01, the air supply mechanism 04 is installed on the grinding mechanism 03 and is located on the right side of the feeding mechanism 01, the condensation mechanism 05 is installed on the air supply mechanism 04, and the screening mechanism 06 is located below the feeding mechanism 01.

[0023] The powder coating is placed in the feeding mechanism 01. Hot air is discharged into the feeding mechanism 01 by starting the drying mechanism 02 to dry the powder coating in the feeding mechanism 01. The dried powder coating is discharged into the grinding mechanism 03 through the feeding mechanism 01. At the same time, the air supply mechanism 04 and the condensation mechanism 05 are started respectively. The condensation mechanism 05 condenses the water vapor in the air to dry the air. The air supply mechanism 04 discharges high-pressure air into the grinding mechanism 03 to accelerate the crushing speed of the powder coating. The crushed powder is discharged into the screening mechanism 06 for classification and screening, thereby improving the practicality of the equipment.

[0024] like Figure 2As shown, the feeding mechanism 01 includes a feeding pipe 11, a feeding barrel 12 and an exhaust pipe 13. The output end of the feeding pipe 11 is connected to the top of the feeding barrel 12. A valve is provided on the output end of the feeding barrel 12. The input end of the exhaust pipe 13 is connected to the outer wall of the feeding barrel 12.

[0025] like Figure 3 As shown, the drying mechanism 02 includes a first air pump 21, a heating box 22, an air supply pipe 23, a rotary joint 24, a rotating pipe 25, multiple exhaust blades 26, two sets of gears 27, and a first motor 28. A filter element is provided on the input end of the first air pump 21. The output end of the first air pump 21 is connected to the input end of the heating box 22. The output end of the heating box 22 is connected to the input end of the air supply pipe 23. The output end of the air supply pipe 23 is connected to the input end of the rotary joint 24. The output end of the rotary joint 24 is connected to the input end of the rotating pipe 25. Multiple output ends are provided on the rotating pipe 25. The input ends of the multiple rotating pipes 25 are respectively installed on the multiple output ends of the rotating pipe 25. Exhaust holes are provided on the multiple exhaust blades 26. The rotating pipe 25 is located inside the exhaust pipe 13. The inner ring of one exhaust blade 26 is installed on the upper part of the rotating pipe 25. The inner ring of the other gear 27 is installed on the output end of the first motor 28. The outer rings of the two sets of gears 27 mesh with each other.

[0026] The powder coating raw material is discharged into the feeding hopper 12 through the feed pipe 11 and dried in the feeding hopper 12. Excess gas in the feeding hopper 12 is discharged through the exhaust pipe 13. The first air pump 21 is started to discharge air into the heating box 22. The heating box 22 heats the air. The heated air is discharged into the rotating pipe 25 through the air supply pipe 23 to the rotary joint 24. The air is discharged through multiple exhaust blades 26 to dry the powder coating raw material in the feeding hopper 12. The first motor 28 is started, and the rotating pipe 25 is rotated through the meshing of two sets of gears 27. The powder coating raw material is stirred by the multiple exhaust blades 26 to make it dry evenly and improve the practicality of the equipment. Example 2

[0027] like Figure 4 and Figure 5As shown, on the basis of embodiment 1, it further includes drying mechanism 02, air supply mechanism 04 and condensing mechanism 05, and the grinding mechanism 03 includes a workbench 31, a grinding barrel 32, a first screening plate 33, a second motor 34, a gearbox 35, a rotating shaft 36, a plurality of crushing plates 37 and a shovel 38, the workbench 31 is internally provided with a cavity, the grinding barrel 32 is installed at the top end of the workbench 31, the first screening plate 33 is installed on the inner wall of the lower part of the grinding barrel 32, the second motor 34 and the gearbox 35 are both installed at the top end of the grinding barrel 32, the input end of the gearbox 35 is connected with the output end of the gearbox 35, the top end of the rotating shaft 36 is installed at the output end of the gearbox 35, a plurality of gearboxes 35 are arranged on the gearbox 35, and the shovel 38 is installed on the rotating shaft 36 and located below the plurality of crushing plates 37; the air supply mechanism 04 includes an air inlet pipe 41, a cooling pipe 42, a second air pump 43, a shunt pipe 44, a plurality of annular pipes 45 and a plurality of high-pressure nozzles 46, the air inlet pipe 41 is internally provided with a filter element, the output end of the air inlet pipe 41 is connected with the input end of the cooling pipe 42, the output end of the cooling pipe 42 is connected with the input end of the second air pump 43, the output end of the second air pump 43 is connected with the input end of the shunt pipe 44, the shunt pipe 44 is provided with a plurality of output ends, the input ends of the plurality of annular pipes 45 are respectively connected with the plurality of output ends of the shunt pipe 44, a plurality of output ends are respectively arranged on the plurality of annular pipes 45, and the input ends of the plurality of high-pressure nozzles 46 are respectively installed on the plurality of output ends of the plurality of annular pipes 45; the condensing mechanism 05 includes a heat exchange pipe 51, a refrigeration box 52, a baffle 53, a liquid discharge pipe 54 and a collection barrel 55, the heat exchange pipe 51 is installed on the outer wall of the cooling pipe 42, the input end of the heat exchange pipe 51 is connected with the output end of the refrigeration box 52, the output end of the heat exchange pipe 51 is connected with the input end of the refrigeration box 52, the baffle 53 is installed on the inner wall of the cooling pipe 42, the input end of the liquid discharge pipe 54 is connected with the outer wall of the refrigeration box 52, and the liquid discharge pipe 54 is located below the baffle 53, and the output end of the liquid discharge pipe 54 is connected with the input end of the collection barrel 55;

[0028] The workbench 31 supports the grinding drum 32. Powdered coating is discharged into the grinding drum 32. The powdered coating is crushed by activating the air supply mechanism 04. The second motor 34, via the gearbox 35, rotates the rotating shaft 36. Multiple crushing plates 37 and the air supply mechanism 04 work together to crush the powdered coating. The first screening plate 33 screens the powdered coating. The bucket 38 lifts up large unscreened powdered coating particles from the top of the first screening plate 33 for further crushing. The second air pump 43 introduces air through the intake. The air is condensed in the cooling pipe 42 through pipe 41, thus drying the air. The dried air is then discharged into the annular pipe 45 through the diverter pipe 44 and discharged at high speed through multiple high-pressure nozzles 46 to break up the powder coating. The liquid in the heat exchange pipe 51 is cooled by starting the refrigeration box 52, and the water vapor in the air in the cooling pipe 42 is condensed through the heat exchange pipe 51. The condensed water droplets are discharged into the collection tank 55 through the baffle plate 53 and the drain pipe 54, thus improving the practicality of the equipment. Example 3

[0029] like Figure 6 As shown, based on Embodiment 1, a screening mechanism 06 is also included. The screening mechanism 06 includes a screening box 61, a second screening plate 62, a powder discharge plate 63, and two sets of powder discharge ports 64. The second screening plate 62 is installed obliquely on the inner wall of the screening box 61, the powder discharge plate 63 is installed at the bottom of the inner wall of the screening box 61, and the input ends of the multiple powder discharge ports 64 are respectively installed on the left side wall of the screening box 61.

[0030] The crushed powder coating is discharged into the screening box 61 and screened by the second screening plate 62. The large powder coating particles are discharged through one of the discharge ports 64, while the small powder particles are discharged through the discharge plate 63 and the other discharge port 64, thus improving the practicality of the equipment.

[0031] like Figures 1 to 6As shown, the adjustable powder coating airflow mill of the utility model, when working, first powder coating raw materials are discharged to the feeding barrel 12 through the feeding pipe 11, dry in the feeding barrel 12, the excess gas in the feeding barrel 12 is discharged through the exhaust pipe 13, then the air is discharged to the heating box 22 by starting the first air pump 21, the air is heated through the heating box 22, the heated air is discharged to the rotating pipeline 25 through the air supply pipe 23 and the rotating joint 24, and the powder coating raw materials in the feeding barrel 12 are dried through the multiple exhaust blades 26, the rotating pipeline 25 is rotated through the meshing of the two sets of gears 27 by starting the first motor 28, the powder coating raw materials are stirred through the multiple exhaust blades 26, so that they are uniformly dried, then the workbench 31 supports the grinding barrel 32, the powder coating is discharged into the grinding barrel 32, the powder coating is crushed by starting the air supply mechanism 04, the rotating shaft 36 is rotated through the gearbox 35 by starting the second motor 34, the powder coating is crushed through the cooperation of the multiple crushing plates 37 and the air supply mechanism 04, the powder coating is screened through the first screening plate 33, the large particle powder coating on the upper part of the first screening plate 33 is lifted and crushed again through the shovel 38, then the liquid in the heat exchange pipe 51 is refrigerated by starting the refrigeration box 52, the air in the cooling pipe 42 is refrigerated through the heat exchange pipe 51, so that the water vapor in the air in the cooling pipe 42 is condensed, the condensed water drops are discharged into the collecting barrel 55 through the baffle 53 and the liquid discharge pipe 54, then the air is discharged into the cooling pipe 42 through the air inlet pipe 41 by starting the second air pump 43, so that the air is condensed in the cooling pipe 42, so that the air is dried, the dried gas is discharged into the annular pipe 45 through the shunt pipe 44, and the powder coating is crushed through the multiple high-pressure nozzles 46, and finally the crushed powder coating is discharged into the screening box 61, and the powder coating is screened through the second screening plate 62, and the large particle powder coating is discharged through one of the powder discharge ports 64, and the small particle powder is discharged through the powder discharge plate 63 and the other powder discharge port 64, so that the practicability of the equipment is improved.

[0032] The first air pump 21, the heating box 22, the first motor 28, the second motor 34, the gearbox 35, the second air pump 43, the high-pressure nozzle 46 and the refrigeration box 52 are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the technical personnel in the field having to create labor.

[0033] The main function realized by the utility model is that the powder coating is placed in the feeding mechanism 01, hot air is discharged into the feeding mechanism 01 by starting the drying mechanism 02, the powder coating in the feeding mechanism 01 is dried, the crushing speed of the powder coating is accelerated by starting the grinding mechanism 03, the crushed powder is discharged into the screening mechanism 06, and the powder is classified and screened through the screening mechanism 06, so that the practicability of the equipment is improved.

[0034] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. An adjustable powder coating airflow mill, comprising a feeding mechanism (01); characterized in that, It also includes drying mechanism (02), grinding mechanism (03), air supply mechanism (04), condensing mechanism (05) and screening mechanism (06), the feeding mechanism (01) is installed on the grinding mechanism (03), the drying mechanism (02) is installed inside the feeding mechanism (01), the air supply mechanism (04) is installed on the grinding mechanism (03), the air supply mechanism (04) is located on the right side of the feeding mechanism (01), the condensing mechanism (05) is installed on the air supply mechanism (04), the screening mechanism (06) is located below the feeding mechanism (01).

2. An adjustable powder paint airflow mill as claimed in claim 1, characterised in that, The feeding mechanism (01) includes a feeding pipe (11), a feeding bucket (12) and an exhaust pipe (13), the output end of the feeding pipe (11) is connected with the top end of the feeding bucket (12), the valve is arranged on the output end of the feeding bucket (12), and the input end of the exhaust pipe (13) is connected with the outer wall of the feeding bucket (12).

3. An adjustable powder paint air flow mill as claimed in claim 2, wherein, The drying mechanism (02) includes a first air pump (21), a heating box (22), an air supply pipe (23), a rotary joint (24), a rotary pipe (25), a plurality of exhaust vanes (26), two groups of gears (27) and a first motor (28), the input end of the first air pump (21) is provided with a filter element, the output end of the first air pump (21) is connected with the input end of the heating box (22), the output end of the heating box (22) is connected with the input end of the air supply pipe (23), the output end of the air supply pipe (23) is connected with the input end of the rotary joint (24), the output end of the rotary joint (24) is connected with the input end of the rotary pipe (25), a plurality of output ends are arranged on the rotary pipe (25), the inputs of the plurality of rotary pipes (25) are installed on the plurality of outputs of the rotary pipe (25), a plurality of exhaust vanes (26) are arranged on the plurality of exhaust vanes (26), and the plurality of exhaust vanes (26) are arranged on the plurality of exhaust vanes (26), wherein the inner circle of one of the exhaust vanes (26) is installed on the upper part of the rotary pipe (25), the inner circle of the other gear (27) is installed on the output end of the first motor (28), and the outer circles of the two groups of gears (27) are engaged with each other.

4. An adjustable powder coating jet mill as defined in claim 1, wherein, The grinding mechanism (03) includes a workbench (31), a grinding barrel (32), a first screening plate (33), a second motor (34), a gearbox (35), a rotating shaft (36), a plurality of crushing plates (37) and a shovel (38), the inner part of the workbench (31) is provided with a cavity, the grinding barrel (32) is installed on the top end of the workbench (31), the first screening plate (33) is installed on the inner wall of the lower part of the grinding barrel (32), the second motor (34) and the gearbox (35) are installed on the top end of the grinding barrel (32), the input end of the gearbox (35) is connected with the output end of the gearbox (35), the top end of the rotating shaft (36) is installed on the output end of the gearbox (35), a plurality of gearboxes (35) are arranged on the gearbox (35), the shovel (38) is installed on the rotating shaft (36), and the shovel (38) is located below the plurality of crushing plates (37).

5. An adjustable powder coating jet mill as defined in claim 1, wherein, The air supply mechanism (04) comprises an air inlet pipe (41), a cooling pipe (42), a second air pump (43), a shunt pipe (44), a plurality of annular pipes (45) and a plurality of high-pressure nozzles (46), the air inlet pipe (41) is internally provided with a filter element, the output end of the air inlet pipe (41) is connected with the input end of the cooling pipe (42), the output end of the cooling pipe (42) is connected with the input end of the second air pump (43), the output end of the second air pump (43) is connected with the input end of the shunt pipe (44), the shunt pipe (44) is provided with a plurality of output ends, the input ends of the plurality of annular pipes (45) are respectively connected with the plurality of output ends of the shunt pipe (44), the plurality of annular pipes (45) are respectively provided with a plurality of output ends, and the input ends of the plurality of high-pressure nozzles (46) are respectively installed on the plurality of output ends of the plurality of annular pipes (45).

6. An adjustable powder paint air flow mill as claimed in claim 5 wherein, The condensing mechanism (05) comprises a heat exchange pipe (51), a refrigeration box (52), a baffle (53), a liquid discharge pipe (54) and a collection barrel (55), the heat exchange pipe (51) is installed on the outer wall of the cooling pipe (42), the input end of the heat exchange pipe (51) is connected with the output end of the refrigeration box (52), the output end of the heat exchange pipe (51) is connected with the input end of the refrigeration box (52), the baffle (53) is installed on the inner wall of the cooling pipe (42), the input end of the liquid discharge pipe (54) is connected with the outer wall of the refrigeration box (52), the liquid discharge pipe (54) is located at the lower part of the baffle (53), and the output end of the liquid discharge pipe (54) is connected with the input end of the collection barrel (55).

7. An adjustable powder coating jet mill as defined in claim 1, wherein, The screening mechanism (06) comprises a screening box (61), a second screening plate (62), a powder discharge plate (63) and two groups of powder discharge ports (64), the second screening plate (62) is obliquely installed on the inner wall of the screening box (61), the powder discharge plate (63) is installed on the bottom end of the inner wall of the screening box (61), and the input ends of the plurality of powder discharge ports (64) are respectively installed on the left side wall of the screening box (61).

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