Adjustable vacuum gas atomization powder making equipment

Abstract

The utility model discloses an adjustable vacuum gas atomization pulverization equipment relates to atomization pulverization technical field, including vacuum gas atomization pulverization mechanism, including shell, feed pipe, atomizer, vacuum piece, airflow regulation piece, cleaning piece and pressure gauge, feed pipe passes through fixed connection shell top, atomizer is installed feed pipe lower end, vacuum piece, airflow regulation piece, cleaning piece and pressure gauge. The vacuum part is installed on the top of the shell, and the airflow adjusting part is arranged on the surface of the shell and the surface of the atomizer. According to the vacuum gas atomization powder making mechanism, the granularity of vacuum gas atomization powder making can be adjusted, gas used for providing airflow can be filtered, the powder making process is not prone to being interfered by external impurities, and therefore the purity of powder is improved, and the powder making efficiency is improved. And through the screening mechanism, the metal particles collide with one another, are exploded to be scattered again and are discharged from the screening holes, powder which does not pass through the diameters of the screening holes is intercepted in the screening net frame, and the screening function is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to atomization powder technology field especially a kind of adjustable vacuum air atomization powder equipment. BACKGROUND

[0002] Vacuum air atomization powder is an advanced powder preparation process that rapidly solidifies liquid metal or alloy into powder particles through gas atomization in a vacuum environment. This technology is widely used in various industrial fields. Vacuum air atomization powder makes full use of the characteristics of vacuum environment and high-speed airflow, achieving efficient and high-quality powder production. The process is carried out in a vacuum environment, avoiding external impurities interference and improving powder purity and quality.

[0003] After searching, the publication number is CN213379280U, and the name is a kind of atomizer for vacuum air atomization metal powder equipment, including atomizer shell, atomization structure and centrifugal structure. Through research and analysis, it is found that although it has the advantages of automatically and efficiently completing atomization powder work, it still has the following shortcomings to some extent.

[0004] For example, it cannot adjust the particle size of vacuum air atomization powder, and it cannot filter the gas used to provide airflow. During the powder production process, it may be disturbed by external impurities, thereby reducing the purity of the powder. To solve the above technical problems, we designed a kind of adjustable vacuum air atomization powder equipment. SUMMARY

[0005] The purpose of this section is to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above and / or existing problems in the adjustable vacuum air atomization powder equipment, the present utility model is proposed.

[0007] Therefore, the problem to be solved by the present utility model is how to solve the problem of being unable to adjust the particle size of vacuum air atomization powder and being unable to filter the gas used to provide airflow.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an adjustable vacuum atomization powder-making device, comprising: a vacuum atomization powder-making mechanism, including a housing, a feed pipe, an atomizer, a vacuum component, an airflow regulating component, a cleaning component, and a pressure gauge; the feed pipe is fixedly connected to the top of the housing; the atomizer is installed at the lower end of the feed pipe; the vacuum component is installed at the top of the housing; the airflow regulating component is disposed on the surfaces of the housing and the atomizer; the cleaning component is disposed on the surfaces of the housing and the airflow regulating component; and the pressure gauge is installed and connected to the top of the housing; and a sieving mechanism, disposed on the surface of the housing, including a sieving frame, a supporting guide component, and a driving component; the sieving frame is installed on the surface of the supporting guide component; the driving component is disposed on the surfaces of the airflow regulating component and the supporting guide component; and the supporting guide component is disposed on the surfaces of the housing and the driving component.

[0009] As a preferred embodiment of the adjustable vacuum atomizing powder-making device of this utility model, the atomizer includes a base, a top cover, a first channel and a second channel. The top cover is fixedly connected to the top of the base by screws and is connected to the lower end of the feed pipe. The first channel and the second channel are opened on the surface of the base and are connected to each other.

[0010] As a preferred embodiment of the adjustable vacuum atomizing powder-making device of this utility model, the vacuum component includes a vacuum pump, a bent pipe and a solenoid valve. The vacuum pump is fixedly connected to the top of the housing. The two ends of the bent pipe are respectively connected to the input end of the vacuum pump and the top of the housing. The solenoid valve is installed on the surface of the bent pipe.

[0011] In a preferred embodiment of the adjustable vacuum atomizing powder-making device of this utility model, the airflow regulating component includes an air pump, a connecting pipe, a first square pipe, a second square pipe, a mesh plate, and a flow regulating valve. The air pump is fixedly connected to the surface of the housing. One end of the connecting pipe is connected to the output end of the air pump. The first square pipe is fixedly connected to the surface of the housing. The second square pipe is fixedly connected to the surface of the base and is connected to the second channel. The mesh plate is fixedly connected to the inner wall of one end of the second square pipe. The flow regulating valve is installed and connected to the ends of the connecting pipe and the first square pipe that are close to each other.

[0012] In a preferred embodiment of the adjustable vacuum atomizing powder-making device of this utility model, the cleaning component includes a vertical rod, a square frame, a sealing ring, a cleaning brush, a connecting plate, and a limiting block. The vertical rod is slidably connected to the surface of the housing. The square frame is fixedly connected to the lower end of the vertical rod. The sealing ring is fixedly connected to the surface of the square frame. The cleaning brush is fixedly connected to the bottom of the square frame. The connecting plate is fixedly connected to the upper end of the vertical rod. The limiting block is fixedly connected to the surface of the vertical rod. The surface of the sealing ring is movably connected to the first square tube and the second square tube.

[0013] As a preferred scheme of the adjustable vacuum air atomization powder preparation equipment, the support guide piece comprises a sliding rod, a sliding sleeve and a spring, the sliding rod is fixedly connected to the inner wall of the shell, the sliding sleeve is sleeved on the surface of the sliding rod, the spring is sleeved on the surface of the sliding rod, and the two ends of the spring are movably connected with the shell and the sliding sleeve respectively, and the sliding sleeve is fixedly connected to the surface of the screening net frame.

[0014] As a preferred scheme of the adjustable vacuum air atomization powder preparation equipment, the drive piece comprises a rotating rod, a rotating disc, a short rod, a moving frame and a connecting rod, the rotating rod is fixedly connected to the rotating shaft of the air pump, the rotating disc is fixedly connected to the lower end of the rotating rod, the short rod is fixedly connected to the lower end of the rotating disc, the moving frame is sleeved on the surface of the short rod, the connecting rod is slidably connected to the surface of the shell, and the two ends of the connecting rod are fixedly connected with the surface of the screening net frame and the moving frame respectively.

[0015] As a preferred scheme of the adjustable vacuum air atomization powder preparation equipment, the shell top is communicated with an exhaust valve, the inner wall of the shell is fixedly connected with a material guide hopper, the bottom of the inner wall of the shell is fixedly connected with a funnel, the bottom of the funnel is communicated with a material discharge valve, the surface of the shell is connected with a mounting plate through bolts, and the surface of the mounting plate is fixedly connected with a window.

[0016] As a preferred scheme of the adjustable vacuum air atomization powder preparation equipment, the surface of the shell is fixedly connected with a cover body, the rotating rod is rotatably connected with the cover body, the surface of the rotating rod is sleeved with a reinforcing plate and rotatably connected with the reinforcing plate, and the reinforcing plate is fixedly connected to the surface of the shell.

[0017] The adjustable vacuum air atomization powder preparation equipment has the advantages that the vacuum air atomization powder preparation mechanism can adjust the granularity of the vacuum air atomization powder, the gas used for providing the airflow can be filtered, the powder preparation process is not easily disturbed by external impurities, the purity of the powder is improved, the metal particles can collide with each other, be scattered again and be discharged from the screen holes through the screening mechanism, the powder not passing through the screen hole apertures is intercepted in the screening net frame, and the screening function is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor intensity. Among them:

[0019] Figure 1 It is a perspective view of the adjustable vacuum air atomization powder preparation equipment. It is a perspective view of the adjustable vacuum air atomization powder preparation equipment.

[0020] Figure 2 Partial sectional perspective structure of adjustable vacuum air atomization powder making equipment Figure 1 .

[0021] Figure 3 Partial sectional perspective structure of adjustable vacuum air atomization powder making equipment Figure 2 Enlarged structural view of A in the middle.

[0022] Figure 4 Partial sectional perspective structure of adjustable vacuum air atomization powder making equipment Figure 2 .

[0023] Figure 5 Partial sectional perspective structure of adjustable vacuum air atomization powder making equipment Figure 4 Enlarged structural view of B in the middle.

[0024] Figure 6 Partial sectional perspective structure of adjustable vacuum air atomization powder making equipment Figure 4 Enlarged structural view of C in the middle.

[0025] Figure 7 Partial sectional perspective structure of adjustable vacuum air atomization powder making equipment Figure 3 .

[0026] In the figure: 100, vacuum air atomization powder making mechanism; 101, shell; 102, feeding pipe; 103, atomizer; 104, vacuum part; 105, air flow adjusting part; 106, cleaning part; 107, pressure gauge; 108, exhaust valve; 109, guide hopper; 110, hopper; 111, discharging valve; 112, mounting plate; 113, window; 200, screening mechanism; 201, screening net frame; 202, supporting and guiding part; 203, driving part; 204, cover body; 205, reinforcing plate; 103a, base; 103b, upper cover; 103c, first channel; 103d, second channel; 104a, vacuum pump; 104b, elbow; 104c, electromagnetic valve; 105a, air pump; 105b, connecting pipe; 105c, first square pipe; 105d, second square pipe; 105e, net plate; 105f, flow regulating valve; 106a, vertical rod; 106b, square frame; 106c, sealing ring; 106d, cleaning brush; 106e, connecting plate; 106f, limiting block; 202a, sliding rod; 202b, sliding sleeve; 202c, spring; 203a, rotating rod; 203b, rotating disc; 203c, short rod; 203d, moving frame; 203e, connecting rod. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the spirit of the present application, therefore, the present application is not limited to the specific embodiments disclosed below.

[0029] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive of other embodiments.

[0030] Embodiment 1

[0031] Reference Figure 1 and Figure 2 The first embodiment of the present application provides an adjustable vacuum air atomization powder preparation equipment, which comprises a vacuum air atomization powder preparation mechanism 100 and a screening mechanism 200. The vacuum air atomization powder preparation mechanism 100 can adjust the particle size of the vacuum air atomization powder, and can filter the gas used to provide the air flow. The screening mechanism 200 can collide with each other and be scattered again, and can be discharged from the screen hole, and has the function of screening.

[0032] Specifically, the vacuum air atomization powder preparation mechanism 100 comprises a shell 101, a feeding pipe 102, an atomizer 103, a vacuum part 104, an air flow adjusting part 105, a cleaning part 106 and a pressure gauge 107. The feeding pipe 102 is fixedly connected to the top of the shell 101. The atomizer 103 is installed at the lower end of the feeding pipe 102. The vacuum part 104 is installed at the top of the shell 101. The air flow adjusting part 105 is arranged on the surface of the shell 101 and the atomizer 103. The cleaning part 106 is arranged on the surface of the shell 101 and the air flow adjusting part 105. The pressure gauge 107 is installed and communicated with the top of the shell 101.

[0033] The feeding pipe 102 is connected with the molten metal liquid feeding device. The air flow adjusting part 105 provides air flow to spray the liquid metal into the atomizer 103. The free falling metal liquid droplets are broken into target powder by high pressure atomizing gas when they meet the air flow in the atomizer 103. The size of the metal powder particles can be adjusted by adjusting the size of the air flow, which meets different preparation requirements and improves the practicability.

[0034] The device provides vacuum condition in the device by the vacuum part 104, and the high vacuum degree environment ensures the purity of the powder making process and avoids the interference of external impurities.

[0035] Specifically, the screening mechanism 200 is arranged on the surface of the shell 101 and comprises a screening mesh frame 201, a supporting guide 202 and a driving part 203.

[0036] The supporting guide 202 supports the screening mesh frame 201 and guides the movement of the screening mesh frame 201.

[0037] Embodiment 2

[0038] With reference to Figures 2 to 7 For the second embodiment of the utility model, the embodiment is based on the previous embodiment.

[0039] Specifically, the atomizer 103 comprises a base 103a, an upper cover 103b, a first channel 103c and a second channel 103d.

[0040] The metal liquid drops enter the upper cover 103b through the feeding pipe 102 and freely fall from the lower end.

[0041] The vacuum part 104 comprises a vacuum pump 104a, a bend pipe 104b and a solenoid valve 104c.

[0042] The vacuum pump 104a is fixedly connected to the top of the shell 101 by bolts, and the gas in the shell 101 is extracted by the vacuum pump 104a, so that the powder making is carried out in a vacuum environment, avoiding the interference of external impurities, improving the purity and quality of the powder, and the electromagnetic valve 104c is closed after the vacuum extraction of the shell 101 by the vacuum pump 104a is completed, avoiding the entry of external gas into the shell 101 through the vacuum pump 104a, preventing the vacuum degree from decreasing, and ensuring the vacuum condition in the equipment.

[0043] The airflow adjusting member 105 includes a gas pump 105a, a connecting pipe 105b, a first square pipe 105c, a second square pipe 105d, a mesh plate 105e, and a flow regulating valve 105f. The gas pump 105a is fixedly connected to the surface of the shell 101, one end of the connecting pipe 105b is in communication with the output end of the gas pump 105a, the first square pipe 105c is fixedly connected to the surface of the shell 101, the second square pipe 105d is fixedly connected to the surface of the base 103a, the second square pipe 105d is in communication with the second channel 103d, the mesh plate 105e is fixedly connected to the inner wall of one end of the second square pipe 105d, and the flow regulating valve 105f is installed in communication with one end of the connecting pipe 105b and the first square pipe 105c.

[0044] The gas pump 105a and the first square pipe 105c are communicated through the connecting pipe 105b, the mesh plate 105e filters the passing gas and traps the particulate impurities in the gas, and the flow rate of the gas entering the atomizer 103 from the second square pipe 105d is controlled by the flow regulating valve 105f. The gas flow velocity can have a significant effect on the powder particle size. Increasing the gas flow velocity will make the powder particle size coarser, and decreasing the gas flow velocity will make the powder particle size finer.

[0045] The cleaning member 106 includes a vertical rod 106a, a square frame 106b, a sealing ring 106c, a cleaning brush 106d, a connecting plate 106e, and a limiting block 106f. The vertical rod 106a is slidingly connected to the surface of the shell 101, the square frame 106b is fixedly connected to the lower end of the vertical rod 106a, the sealing ring 106c is fixedly connected to the surface of the square frame 106b, the cleaning brush 106d is fixedly connected to the bottom of the square frame 106b, the connecting plate 106e is fixedly connected to the upper end of the vertical rod 106a, the limiting block 106f is fixedly connected to the surface of the vertical rod 106a, and the surface of the sealing ring 106c is movably connected to the first square pipe 105c and the second square pipe 105d.

[0046] The vertical rod 106a penetrates the shell 101 and is in sliding connection with the shell 101, and is sealed, the first square tube 105c and the second square tube 105d are kept in communication through the sealing ring 106c and the square box 106b, so that the gas flow can enter the second square tube 105d through the first square tube 105c, and the vertical rod 106a and the square box 106b are limited by the limiting block 106f when the cleaning brush 106d is not used, so that the square box 106b and the sealing ring 106c are opposite to one end of the first square tube 105c and the second square tube 105d, and when the screen plate 105e needs to be cleaned, the vertical rod 106a drives the square box 106b, the sealing ring 106c and the cleaning brush 106d to move up and down by pulling the connecting plate 106e up and down, so as to clean the surface of the screen plate 105e.

[0047] The support guide 202 includes a sliding rod 202a, a sliding sleeve 202b and a spring 202c, the sliding rod 202a is fixedly connected to the inner wall of the shell 101, the sliding sleeve 202b is sleeved on the surface of the sliding rod 202a, and the spring 202c is sleeved on the surface of the sliding rod 202a, the two ends of the spring 202c are movably connected with the shell 101 and the sliding sleeve 202b respectively, and the sliding sleeve 202b is fixedly connected to the surface of the screen frame 201.

[0048] The sliding sleeve 202b is in sliding connection with the sliding rod 202a, the sliding sleeve 202b and the screen frame 201 in the moving process are buffered by the spring 202c, so that they are more stable during movement, the number of the sliding rods 202a is two, the sliding sleeve 202b is guided and supported, and the screen frame 201 can only move along the axial direction.

[0049] The driving member 203 includes a rotating rod 203a, a rotating disc 203b, a short rod 203c, a moving frame 203d and a connecting rod 203e, the rotating rod 203a is fixedly connected to the rotating shaft of the air pump 105a, the rotating disc 203b is fixedly connected to the lower end of the rotating rod 203a, the short rod 203c is fixedly connected to the lower end of the rotating disc 203b, the moving frame 203d is sleeved on the surface of the short rod 203c, the connecting rod 203e is in sliding connection with the surface of the shell 101, and the two ends of the connecting rod 203e are fixedly connected with the surface of the screen frame 201 and the surface of the moving frame 203d.

[0050] The connecting rod 203e penetrates the shell 101 and is in sliding connection with the shell 101, the rotating disc 203b and the short rod 203c are driven to rotate by the rotation of the rotating rod 203a, the moving frame 203d and the connecting rod 203e move reciprocatingly, so that the screen frame 201 moves reciprocatingly, metal particles can collide with each other to be scattered again and discharged from the screen hole, and the powder that does not pass through the screen hole diameter is intercepted in the screen frame 201, and the function of screening is achieved.

[0051] The top of the shell 101 is communicated with an exhaust valve 108, the inner wall of the shell 101 is fixedly connected with a guide hopper 109, the bottom of the inner wall of the shell 101 is fixedly connected with a funnel 110, the bottom of the funnel 110 is communicated with a discharge valve 111, the surface of the shell 101 is bolted with a mounting plate 112, and the surface of the mounting plate 112 is fixedly connected with a window 113.

[0052] The opening of the exhaust valve 108 can discharge the gas in the device, the powder formed by the vacuum gas atomization is guided to the screening mesh frame 201 to collide and scatter again, and is screened at the same time, the powder discharged from the screening mesh frame 201 is collected through the funnel 110, which is convenient for subsequent opening of the discharge valve 111 for discharge, the mounting plate 112 is fixedly connected with the shell 101 by bolts, which is convenient for disassembly and maintenance of the device, and the window 113 is convenient for observing the internal condition of the device.

[0053] The surface of the shell 101 is fixedly connected with a cover 204, the rotating rod 203a is rotatably connected with the cover 204, the surface of the rotating rod 203a is sleeved with a reinforcing plate 205 and rotatably connected with the reinforcing plate 205, and the reinforcing plate 205 is fixedly connected to the surface of the shell 101.

[0054] The rotating rod 203a is rotatably connected with the cover 204 and the reinforcing plate 205 through bearings, the driving member 203 is shielded and protected by the cover 204, and the rotating rod 203a is reinforced by the reinforcing plate 205 without affecting its normal rotation.

[0055] In use, the feeding pipe 102 is connected with the molten metal liquid feeding device, the operation of the vacuum pump 104a and the opening of the electromagnetic valve 104c are controlled, the device is vacuumized, the operation of the air pump 105a is controlled, the external gas is pressurized and enters the second channel 103d in the atomizer 103 from the first channel 103c through the connecting pipe 105b, the first square pipe 105c and the second square pipe 105d, and when the sprayed gas meets the metal liquid droplets falling freely from the lower end of the upper cover 103b, the metal liquid droplets are broken into powder by the high-pressure gas, and the preliminary atomization and powdering of the molten metal liquid are completed.

[0056] The rotation of the upper rotating shaft of the air pump 105a drives the rotation of the rotating rod 203a, drives the rotation of the rotating disc 203b and the short rod 203c, reciprocatingly moves the moving frame 203d and the connecting rod 203e, so that the screening mesh frame 201 reciprocatingly moves, the metal particles collide with each other to be scattered again and discharged from the screen holes, and the powder not passing through the screen hole diameter is intercepted in the screening mesh frame 201.

[0057] When it is necessary to adjust the particle size of the prepared powder, the flow rate of the gas entering the atomizer 103 through the second square tube 105d is controlled by controlling the opening size of the flow regulating valve 105f. The airflow velocity can significantly affect the powder particle size. Increasing the airflow velocity will make the powder particle size coarser, while decreasing the airflow velocity will make the powder particle size finer. When it is necessary to clean the screen plate 105e, the equipment is stopped, and the connecting plate 106e is pulled up and down to make the vertical rod 106a drive the square frame 106b, the sealing ring 106c and the cleaning brush 106d to move up and down, thereby cleaning the surface of the screen plate 105e.

[0058] In summary, the vacuum atomization powder making mechanism 100 can adjust the particle size of vacuum atomization powder making and filter the gas used to provide the airflow. The screening mechanism 200 can cause metal particles to collide and break apart again and be discharged from the screen holes. Powder that does not pass through the screen hole diameter is retained in the screening frame 201, thus having a screening function.

[0059] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0060] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0061] It is to be understood that the development of the particular implementations described herein was not determined merely by the availability of certain items or materials. Rather and more generally, specific implementations can be determined, for example, based on the particular requirements of the instrument or system to which that implementation relates. For example, a specific implementation of a reagent or kit can be determined based on the number of assays or assays types that are to be performed by the instrument or system that implementation relates to.

[0062] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. An adjustable vacuum air-atomized powder production apparatus, characterized by: The utility model relates to a vacuum air atomization powder making mechanism (100) and a screening mechanism (200), and the vacuum air atomization powder making mechanism (100) comprises a shell (101), a feeding pipe (102), an atomizer (103), a vacuum part (104), an airflow adjusting part (105), a cleaning part (106) and a pressure gauge (107), the feeding pipe (102) is fixedly connected to the top of the shell (101) in a penetrating mode, the atomizer (103) is installed at the lower end of the feeding pipe (102), the vacuum part (104) is installed at the top of the shell (101), the airflow adjusting part (105) is arranged on the surface of the shell (101) and the atomizer (103), the cleaning part (106) is arranged on the surface of the shell (101) and the airflow adjusting part (105), and the pressure gauge (107) is installed in communication with the top of the shell (101). The screening mechanism (200) is arranged on the surface of the shell (101) and comprises a screening mesh frame (201), a supporting and guiding part (202) and a driving part (203), the screening mesh frame (201) is installed on the surface of the supporting and guiding part (202), the driving part (203) is arranged on the surface of the airflow adjusting part (105) and the supporting and guiding part (202), and the supporting and guiding part (202) is arranged on the surface of the shell (101) and the driving part (203). The atomizer (103) comprises a base (103a) and an upper cover (103b), the upper cover (103b) is fixedly connected to the top of the base (103a) by means of screws, the upper cover (103b) is in communication with the lower end of the feeding pipe (102), and the first channel (103c) and the second channel (103d) are formed in the surface of the base (103a), and the first channel (103c) is in communication with the second channel (103d).

2. The adjustable vacuum air-atomizing pulverizing apparatus as claimed in claim 1, wherein: The vacuum part (104) comprises a vacuum pump (104a), a bend pipe (104b) and a solenoid valve (104c), the vacuum pump (104a) is fixedly connected to the top of the shell (101), the two ends of the bend pipe (104b) are in communication with the input end of the vacuum pump (104a) and the top of the shell (101) respectively, and the solenoid valve (104c) is installed on the surface of the bend pipe (104b).

3. The adjustable vacuum air-atomizing pulverizing apparatus as claimed in claim 1, wherein: The airflow adjusting part (105) comprises an air pump (105a), a connecting pipe (105b), a first square pipe (105c), a second square pipe (105d), a mesh plate (105e) and a flow regulating valve (105f), the air pump (105a) is fixedly connected to the surface of the shell (101), one end of the connecting pipe (105b) is in communication with the output end of the air pump (105a), the first square pipe (105c) is fixedly connected to the surface of the shell (101) in a penetrating mode, the second square pipe (105d) is fixedly connected to the surface of the base (103a), the second square pipe (105d) is in communication with the second channel (103d), the mesh plate (105e) is fixedly connected to the inner wall of one end of the second square pipe (105d), and the flow regulating valve (105f) is installed in communication with the ends of the connecting pipe (105b) and the first square pipe (105c) that are close to each other.

4. The adjustable vacuum air-atomizing pulverizing apparatus as claimed in claim 2, wherein: ​ 5. The adjustable vacuum air-atomizing pulverizing apparatus as claimed in claim 4, wherein: The cleaning piece (106) comprises a vertical rod (106a), a square box (106b), a sealing ring (106c), a cleaning brush (106d), a connecting plate (106e) and a limiting block (106f), the vertical rod (106a) is slidably connected to the surface of the shell (101), the square box (106b) is fixedly connected to the lower end of the vertical rod (106a), the sealing ring (106c) is fixedly connected to the surface of the square box (106b), the cleaning brush (106d) is fixedly connected to the bottom of the square box (106b), the connecting plate (106e) is fixedly connected to the upper end of the vertical rod (106a), the limiting block (106f) is fixedly connected to the surface of the vertical rod (106a), and the surface of the sealing ring (106c) is movably connected with the first square tube (105c) and the second square tube (105d).

6. The adjustable vacuum air-atomizing pulverizing apparatus as claimed in claim 1, wherein: The supporting and guiding piece (202) comprises a sliding rod (202a), a sliding sleeve (202b) and a spring (202c), the sliding rod (202a) is fixedly connected to the inner wall of the shell (101), the sliding sleeve (202b) is sleeved on the surface of the sliding rod (202a), and the spring (202c) is sleeved on the surface of the sliding rod (202a), the two ends of the spring (202c) are movably connected with the shell (101) and the sliding sleeve (202b) respectively, and the sliding sleeve (202b) is fixedly connected to the surface of the screening mesh frame (201).

7. The adjustable vacuum air-atomizing pulverizing apparatus as claimed in claim 1, wherein: The driving piece (203) comprises a rotating rod (203a), a rotating disc (203b), a short rod (203c), a moving frame (203d) and a connecting rod (203e), the rotating rod (203a) is fixedly connected to the rotating shaft of the air pump (105a), the rotating disc (203b) is fixedly connected to the lower end of the rotating rod (203a), the short rod (203c) is fixedly connected to the lower end of the rotating disc (203b), the moving frame (203d) is sleeved on the surface of the short rod (203c), the connecting rod (203e) is slidably connected to the surface of the shell (101), and the two ends of the connecting rod (203e) are fixedly connected to the surface of the screening mesh frame (201) and the moving frame (203d) respectively.

8. The adjustable vacuum air-atomizing pulverizing apparatus as claimed in claim 1, wherein: The top of the shell (101) is communicated with an exhaust valve (108), the inner wall of the shell (101) is fixedly connected with a material guide hopper (109), the bottom of the inner wall of the shell (101) is fixedly connected with a funnel (110), the bottom of the funnel (110) is communicated with a material discharge valve (111), the surface of the shell (101) is connected with a mounting plate (112) through bolts, and the surface of the mounting plate (112) is fixedly connected with a window (113).

9. The adjustable vacuum air-atomizing pulverizing apparatus as claimed in claim 7, wherein: The surface of the shell (101) is fixedly connected with a cover (204), the rotating rod (203a) is rotatably connected with the cover (204), a reinforcing plate (205) is sleeved on the surface of the rotating rod (203a) and is rotatably connected with the rotating rod (203a), and the reinforcing plate (205) is fixedly connected to the surface of the shell (101).

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