Air-stream mill auxiliary discharging device and air-stream mill equipment

Abstract

The utility model discloses an airflow mill auxiliary blanking device and airflow mill equipment, the airflow mill auxiliary blanking device comprises an auxiliary air pipe, and the auxiliary air pipe is connected with a feed bin and is arranged towards a feed port; the outlet end of the first pipeline is connected with the auxiliary air pipe; the at least one vibration component is connected with the feeding bin; the second pipelines are arranged in one-to-one correspondence with the vibration components, and the outlet ends of the second pipelines are connected with the inlet ends of the vibration components; and the air source component is connected with the inlet ends of the first pipeline and the second pipeline. The utility model can improve the problems of slow blanking and easy material blockage in the traditional feeding mode, can replace the traditional mode of manual knocking to assist blanking, greatly reduces the labor intensity of workers, reduces the labor cost, reduces the startup and shutdown frequency of jet mill equipment, ensures the qualified rate of material indexes, and improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to airflow mill technical field, especially airflow mill auxiliary unloading device and airflow mill equipment. BACKGROUND

[0002] In the process of using airflow mill equipment, the uniformity and stability of feeding have important influence on grinding effect. The traditional feeding mode may have problems such as slow unloading, easy to block, etc. affect the working efficiency and product quality of airflow mill equipment. For some special material airflow mill crushing, for example, ternary positive electrode material crushing, the material may be affected by the positive pressure in the grinding cavity and the flowability, the material unloading is slow or blocked in the rotary valve, small bin, cyclone separator, the existing solution is often to use artificial knocking to assist unloading, the labor intensity of staff is big, the labor cost is high, and, artificial knocking to assist unloading needs to frequently open and close airflow mill equipment, which is easy to cause material index unqualified and reduce production efficiency. UTILITY MODEL CONTENTS

[0003] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, the utility model provides airflow mill auxiliary unloading device and airflow mill equipment.

[0004] The utility model solves the technical problem of the solution scheme:

[0005] An airflow mill auxiliary unloading device is applied to an airflow mill equipment with a feeding bin, the feeding bin is provided with a feeding port, and the airflow mill auxiliary unloading device comprises:

[0006] An auxiliary air pipe is connected with the feeding bin and is arranged towards the feeding port;

[0007] A first pipeline is connected with the auxiliary air pipe at the outlet end;

[0008] At least one vibration component is connected with the feeding bin;

[0009] At least one second pipeline is respectively arranged in one-to-one correspondence with the vibration components, and the outlet end of the second pipeline is connected with the inlet end of the vibration component;

[0010] A gas source component is connected with the inlet end of the first pipeline and the second pipeline.

[0011] The utility model discloses at least has the following beneficial effects: through the gas supply component to first pipeline and second pipeline gas supply, first pipeline passes into the gas into auxiliary air pipe to the feed bin, and by auxiliary air pipe passes into the flow rate of material in feed bin, the second pipeline passes into the gas into vibration component, and vibration component provides vibration power to feed bin, under the vibration of vibration component and the blowing effect of auxiliary air pipe, can improve the slow discharge, easy to block material and other problems of traditional feeding mode, also can replace artificial knock auxiliary traditional mode of discharging, greatly reduce the labor intensity of worker, reduce manpower cost, and can reduce the switching frequency of airflow mill equipment, play certain protection effect to airflow mill equipment, guarantee material target qualification rate, improve production efficiency.

[0012] As a further improvement of the above technical solution, the airflow mill auxiliary discharging device further comprises:

[0013] At least two groups of control components are arranged at the inlet ends of the first pipeline and the second pipeline respectively, and the control components are used for controlling the gas supply amount of the gas source component to the first pipeline and the second pipeline.

[0014] As a further improvement of the above technical solution, the control component comprises a pressure reducing valve and a gas supply switch, the inlet end of the gas supply switch is connected with the gas source component, the outlet end of the gas supply switch is connected with the inlet end of the pressure reducing valve, and the outlet end of the pressure reducing valve is connected with the first pipeline or the second pipeline.

[0015] As a further improvement of the above technical solution, the airflow mill auxiliary discharging device further comprises:

[0016] A fixed plate is detachably connected with the vibration component and detachably connected with the feed bin.

[0017] As a further improvement of the above technical solution, the fixed plate is provided with a first connecting portion and a second connecting portion, the first connecting portion is connected with the second connecting portion, the first connecting portion is detachably connected with the vibration component, the second connecting portion is in the shape of a circular arc, a connecting piece is arranged at the middle part and the end part of the second connecting portion respectively, and the second connecting portion is detachably connected with the feed bin through the connecting pieces.

[0018] As a further improvement of the above technical solution, the auxiliary air pipe comprises a joint and a pipe body, the joint is connected with the outside of the feed bin, the pipe body is arranged in the joint, the outlet end of the pipe body extends into the feed bin and is arranged towards the feed port, and the first pipeline is connected with the inlet end of the joint.

[0019] As a further improvement of the above technical solution, the pipe body is provided with an anti-abrasion layer arranged on the outer surface of the pipe body.

[0020] As a further improvement of the above technical solution, the thickness of the wear-resistant layer to which the pipe body extends into the internal part of the feed bin is greater than the thickness of the wear-resistant layer located at the external part of the feed bin.

[0021] In a second aspect, a jet mill device is provided, which comprises a grinding body, a feed bin, and the auxiliary discharging device according to any one of the above technical solutions, and the inlet end of the grinding body is connected with the feed inlet of the feed bin.

[0022] Since the jet mill device is provided with the auxiliary discharging device, the vibration part can provide vibration power to the position of the feed bin where the material is prone to be blocked, so as to avoid the blocking of the material, and through the linkage of the airflow of the auxiliary air pipe, the flow efficiency of the material in the feed bin is improved, the problem of slow discharging of the traditional jet mill device is solved, the actual feeding time is reduced, and the production efficiency is improved.

[0023] As a further improvement of the above technical solution, the feed bin is provided with a feed pipe, the feed inlet is arranged at the outlet end of the feed pipe, and the outlet part of the auxiliary air pipe is arranged in parallel with the feed pipe. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly described below. Obviously, the described drawings are only a part of the embodiments of the present application, not all embodiments, and those skilled in the art can obtain other design schemes and drawings according to these drawings without creative labor.

[0025] Figure 1 is the overall structure schematic diagram of the auxiliary discharging device of the jet mill of the embodiment of the present application;

[0026] Figure 2 is the installation schematic diagram of the auxiliary discharging device of the jet mill of the embodiment of the present application;

[0027] Figure 3 is the front view of the vibration part of the auxiliary discharging device of the jet mill of the embodiment of the present application;

[0028] Figure 4 is the top view of the vibration part of the auxiliary discharging device of the jet mill of the embodiment of the present application;

[0029] Figure 5 is the installation schematic diagram of the auxiliary air pipe of the auxiliary discharging device of the jet mill of the embodiment of the present application;

[0030] Figure 6 is the installation schematic diagram of the auxiliary air pipe of the auxiliary discharging device of the jet mill of another embodiment of the present application.

[0031] 100, auxiliary trachea; 110, joint; 120, pipe body; 200, first pipe; 300, vibration component; 310, fixing plate; 311, first connecting part; 312, second connecting part; 400, second pipe; 500, air source component; 600, control assembly; 610, pressure reducing valve; 620, air supply switch; 700, feeding bin; 710, bin body; 720, feeding pipe; 721, mounting surface; 730, feeding opening; 800, grinding body. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0033] In the description of the present application, if the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0034] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0035] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0036] Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments, based on the embodiments of the present application, other embodiments obtained by the person skilled in the art without creative labor are all within the scope of protection of the present application. The various technical features in the present application can be combined interactively without mutual contradiction and conflict.

[0037] In the first aspect, with reference to Figure 1 and Figure 2The utility model embodiment proposes a kind of airflow mill auxiliary discharging device, it is mainly applied in the airflow mill equipment with feed bin 700, can improve the slow, easy to block material and other problems of traditional feeding mode, also can replace artificial knock auxiliary discharging traditional mode, greatly reduce the labor intensity of worker, reduce manpower cost, and can reduce airflow mill equipment switch frequency, play certain protective effect to airflow mill equipment, guarantee material index qualified rate, improve production efficiency.

[0038] In the embodiment, airflow mill auxiliary discharging device includes auxiliary air pipe 100, vibration component 300, first pipeline 200, second pipeline 400 and gas source component 500.It can be understood that the feed bin 700 of airflow mill equipment is provided with feed port 730, and the feed port 730 is used to access mill body 800, and material is added to the grinding cavity of mill body 800.Gas source component 500 is used to provide airflow for airflow mill auxiliary discharging device, and gas source component 500 is connected with the inlet end of first pipeline 200 and second pipeline 400 respectively.

[0039] Among them, the outlet end of first pipeline 200 is provided with auxiliary air pipe 100, auxiliary air pipe 100 is connected with feed bin 700, and is set towards feed port 730, and the outlet end of first pipeline 200 enters feed bin 700 along auxiliary air pipe 100 and is set towards feed port 730.When gas source component 500 supplies gas to first pipeline 200, airflow can flow to auxiliary air pipe 100 along first pipeline 200 and enter feed bin 700, flow out towards feed port 730, and the material in feed bin 700 is pushed to flow towards feed port 730 by airflow, improve feeding efficiency, reduce the problem of material blockage in feed bin 700. Figure 1 And Figure 2 The arrow direction in indicates airflow direction.

[0040] The outlet end of second pipeline 400 is connected with vibration component 300. Among them, vibration component 300 is provided with at least one, correspondingly, second pipeline 400 is provided with at least one, vibration component 300 is installed in the outside of easily blocked position in feed bin 700, gas source component 500 can supply gas to vibration component 300 through second pipeline 400, and vibration component 300 provides vibration power to the position that is easily blocked in feed bin 700 by gas vibration mode, to avoid the problem of material blockage in corresponding position.

[0041] In the embodiment, vibration component 300 selects ball type strong vibrator, to generate specific frequency and certain intensity airflow vibration, promote material flow.

[0042] It can be understood that the feeding bin 700 includes a rotary valve, a small bin, a cyclone separator, a raw material bin and the like, wherein the rotary valve, the small bin, the cyclone separator and the like are positions prone to be blocked, and the vibration component 300 can be installed at a raw material bin discharge flange, a small bin discharge flange and a cyclone separator discharge butterfly valve flange. The vibration component 300 can be provided in plurality, and the plurality of vibration components 300 are respectively installed at different positions, which can further avoid the material blocking problem.

[0043] In some embodiments, the airflow mill assisted discharging device further comprises a control assembly 600, which is arranged at the inlet end of the first pipeline 200 and the second pipeline 400, and can control the air inlet amount of the first pipeline 200 and the second pipeline 400 respectively, that is, control the air supply amount of the air source component 500 to the first pipeline 200 and the second pipeline 400.

[0044] It can be understood that the control assembly 600 can be a pressure reducing valve 610, a solenoid valve or a manual pipeline valve, which can control the opening or the inlet end opening size of the first pipeline 200 or the second pipeline 400.

[0045] In some embodiments, the control assembly 600 comprises a pressure reducing valve 610 and an air supply switch 620, wherein the inlet end of the air supply switch 620 is connected with the air source component 500, the outlet end of the air supply switch 620 is connected with the inlet end of the pressure reducing valve 610, and the outlet end of the pressure reducing valve 610 is connected with the first pipeline 200 or the second pipeline 400.

[0046] It can be understood that the air supply switch 620 can be a solenoid valve or a manual valve, which can switch the inlet end of the first pipeline 200 or the second pipeline 400, and the pressure reducing valve 610 can adjust the airflow pressure of the first pipeline 200 or the second pipeline 400, so as to adjust the air flow entering the feeding bin 700 and the air vibration intensity of the vibration component 300.

[0047] It can be understood that the air supply switch 620 can be a solenoid valve or a control hand valve.

[0048] In the present embodiment, the pipeline for connecting the air supply switch 620 and the air source component 500 is made of polypropylene (PP) material. The first pipeline 200 and the second pipeline 400 are both made of PP material.

[0049] In some embodiments, the airflow mill assisted discharging device further comprises a fixing plate 310, referring to Figure 3 The fixing plate 310 is detachably connected with the vibration component 300 and detachably connected with the feeding bin 700.

[0050] In this embodiment, the connection between the fixed plate 310 and the vibration component 300 is achieved by screws and other connectors. The connection between the fixed plate 310 and the feed hopper 700 is also achieved by screws and other connectors. The screws are made of titanium alloy material. Titanium alloy screws have a long service life and do not generate much magnetic aberration after being worn.

[0051] Understandably, by setting the fixing plate 310, it is easier for workers to install the vibrating component 300 on the outside of the feed hopper 700 where material is prone to blockage, thus achieving a better anti-blocking effect.

[0052] In this embodiment, refer to Figure 3 and Figure 4 The fixing plate 310 is provided with a first connecting part 311 and a second connecting part 312. The first connecting part 311 is connected to the front side of the second connecting part 312. The first connecting part 311 and the second connecting part 312 are integrally molded and have sufficient strength. The first connecting part 311 is detachably connected to the vibrating component 300, and the second connecting part 312 is detachably connected to the feed hopper 700.

[0053] The second connecting part 312 is arc-shaped. The middle part and two ends of the second connecting part 312 are respectively provided with holes for installing the connecting parts. Three screws are fixed to the feed hopper 700 according to the position of the holes. The three screws are distributed at the three ends of a triangle. The triangular fixing structure can make the air vibration more stable during use, reduce screw wear, and increase the service life of the vibration component 300.

[0054] In this embodiment, the fixing plate 310 is made of carbon steel. Carbon steel has high strength and rigidity, can withstand large loads and impacts, and has low manufacturing costs.

[0055] In some embodiments, refer to Figure 5 and Figure 6 The auxiliary air pipe 100 includes a connector 110 and a pipe body 120. The connector 110 is connected to the outside of the feed chamber 700. The pipe body 120 passes through the connector 110. The outlet end of the pipe body 120 extends into the interior of the feed chamber 700 and is positioned towards the feed inlet 730. The outlet end of the first pipe 200 is connected to the inlet end of the connector 110.

[0056] Understandably, by setting the connector 110, the installation of the auxiliary gas pipe 100 can be made more convenient. For feed hoppers 700 of different shapes, the extension direction and installation direction of the connector 110 and the pipe body 120 can be adjusted according to the actual situation, making it more versatile. Understandably, the gas flows towards the feed inlet 730 under the restriction of the pipe body 120, which can reduce the corrosion of the feed hopper 700 by the gas introduced through the first pipe 200.

[0057] In this embodiment, the feeding bin 700 is provided with a feeding pipe 720 and a bin body 710. The feeding pipe 720 is inclinedly arranged at the lower end of the bin body 710, and the outlet end of the feeding pipe 720 is the feeding port 730. The outlet portion of the pipe body 120 is arranged parallel to the feeding pipe 720 to avoid airflow erosion of the feeding pipe 720 and improve the service life of the feeding bin 700.

[0058] For the feed hopper 700, which can be modified from the feed pipe 720, refer to... Figure 5 Before installing the auxiliary air pipe 100, the side of the feed pipe 720 used for installing the auxiliary air pipe 100 is modified into a 90° inward recessed groove. One side of this recessed groove is parallel to the feed inlet 730, so that the outer side of the feed pipe 720 has a mounting surface 721 perpendicular to the extension direction of the feed pipe 720, and the other side is perpendicular to the feed inlet 730. The connector 110 is welded to the inclined surface parallel to the feed inlet 730, that is, welded to the mounting surface 721. Then, the pipe body 120 is inserted into the connector 110. The pipe body 120 extends along the extension direction of the feed pipe 720 and is parallel to the feed pipe 720 to avoid cavitation perforation of the feed pipe 720. Then, the first pipeline 200 is connected to the connector 110, and air is supplied through the air source component 500. The first pipeline 200 blows air into the feed hopper 700 to achieve the effect of assisting material flow. Figure 5 In the middle, the arrow at the outlet end of the first pipe 200 indicates the direction of gas flow from the first pipe 200 into the feed pipe 720, and the gas flow direction is parallel to the extension direction of the feed pipe 720.

[0059] For the feed hopper 700, which cannot be modified due to the infeed pipe 720, refer to... Figure 6 The mounting surface 721 of the feed pipe 720 for installing the auxiliary air pipe 100 is generally inclined and forms a certain angle with the extension direction of the feed pipe 720. The connector 110 is welded to the mounting surface 721 at a certain angle and is set perpendicular to the feed pipe 720. The interface position of the connector 110 needs to correspond to the feed port 730. The pipe body 120 is connected to the connector 110 and is in an "L" shape, consisting of pipes with two perpendicular ends. The pipe of the pipe body 120 is in the same extension direction as the connector 110, and the other pipe is parallel to the extension direction of the feed pipe 720 and is set towards the feed port 730. Connect the first pipe to the connector 110, and supply air through the air source component 500. The first pipe 200 blows air into the feed hopper 700 to assist the flow of materials. Moreover, due to the restriction of the gas by the pipe body 120, the flow direction of the gas is parallel to that of the feed pipe 720, which can prevent the feed pipe 720 from cavitation perforation. Figure 6In the middle, the arrow at the outlet end of the first pipe 200 indicates the direction of gas flow from the first pipe 200 into the feed pipe 720, and the gas flow direction is parallel to the extension direction of the feed pipe 720.

[0060] In some embodiments, the tube body 120 is provided with an anti-wear layer, which is coated on the outer surface of the tube body 120 to reduce material friction and wear.

[0061] In this embodiment, the wear-resistant layer is made of polytetrafluoroethylene (PTFE) coating, and the tube body 120 is made of titanium alloy.

[0062] In some embodiments, the thickness of the wear-resistant layer on the outer surface of the portion of the tube 120 extending into the feed hopper 700 is greater than the thickness of the wear-resistant layer on the outer surface of the portion of the tube 120 located outside the feed hopper 700. It is understood that the tube 120 inside the feed hopper 700 needs to come into contact with the material. By thickening the wear-resistant layer, the friction between the material and the tube 120 can be further reduced, thereby increasing the service life of the tube 120.

[0063] Secondly, referring to Figure 2 This utility model provides an air jet mill device, which includes a mill body 800, a feed hopper 700, and an air jet mill auxiliary feeding device according to one embodiment of the first aspect. The inlet end of the mill body 800 is connected to the feed port 730 of the feed hopper 700.

[0064] Because the air jet mill is equipped with an auxiliary feeding device, the vibration component 300 can provide vibration power to the easily blocked parts of the feed hopper 700 to avoid material blockage. Through the airflow linkage of the auxiliary air pipe 100, the flow efficiency of materials in the feed hopper 700 is improved, solving the problem of slow feeding in traditional air jet mills, reducing actual feeding time, and improving production efficiency.

[0065] Before material crushing, first turn on the air supply switch 620 connected to the vibrating component 300, adjust the air supply switch 620 and the pressure reducing valve 610 to a suitable air vibration intensity, and then open the feed hopper 700 to feed the material. The material can smoothly enter the feed hopper 700 without clogging. After feeding to the appropriate material level, stop feeding and turn on the automatic operation mode of the mill body 800. The air supply switch 620 corresponding to the first pipeline 200 opens synchronously with the start of the mill body 800. During operation, the material passes through the feed hopper 700 more smoothly into the mill body 800. After crushing is completed, turn off the mill body 800, and simultaneously turn off the air supply switch 620 of the first pipeline 200, and then turn off the air supply switch 620 of the vibrating component 300.

[0066] In this embodiment, the feed hopper 700 is provided with a feed pipe 720, and the feed inlet 730 is located at the outlet end of the feed pipe 720. The outlet portion of the auxiliary air pipe 100 is arranged parallel to the feed pipe 720, which can prevent the gas flowing into the feed hopper 700 through the first pipe 200 from causing cavitation perforation of the feed pipe 720 and improve the service life of the air jet mill.

[0067] In some embodiments, the vibrating component 300 is detachably connected to the feed hopper 700 via a fixing plate 310. Workers can easily install the vibrating component 300 at locations with severe material blockage, effectively preventing blockages at various locations within the feed hopper 700. By automatically vibrating the feed hopper 700 with the vibrating component 300, replacing manual tapping by workers, the frequency of starting and stopping the air jet mill is reduced, manpower input is decreased, and production costs are lowered.

[0068] In some embodiments, the air source component 500 of the air jet mill auxiliary feeding device and the air source component 500 of the air jet mill equipment are the same air source component 500. The air supply of the first pipeline 200 of the air jet mill auxiliary feeding device can be synchronized with the switching on and off of the air jet mill equipment, thereby reducing costs.

[0069] In continuous production, the feed hopper 700 is blew into the feed hopper 700 in a timely manner through the first pipeline 200, so that the material is fed into the mill body 800 in a timely manner, maintaining the weight at the bottom of the mill body 800 and reducing the impact on product indicators. The number of large fluctuations in the crushing process indicators of the air jet mill equipment in this embodiment is ≤3%.

[0070] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An auxiliary feeding device for an air jet mill, characterized in that, An air jet mill auxiliary feeding device is applied to an air jet mill having a feed hopper (700) and a feed inlet (730). An auxiliary air pipe (100) is connected to the feed hopper (700) and is positioned toward the feed inlet (730); The first pipeline (200) is connected to the auxiliary air pipe (100) at its outlet end. At least one vibrating component (300) is connected to the feed hopper (700); At least one second pipe (400) is provided, and the second pipe (400) is respectively provided in correspondence with the vibration component (300). The outlet end of the second pipe (400) is connected to the inlet end of the vibration component (300). A gas source component (500) is connected to the inlet end of the first pipeline (200) and the second pipeline (400), respectively.

2. The air jet mill auxiliary feeding device according to claim 1, characterized in that, The air jet mill auxiliary feeding device also includes: At least two sets of control components (600) are provided at the inlet ends of the first pipeline (200) and the second pipeline (400), respectively. The control components (600) are used to control the amount of gas supplied by the gas source component (500) to the first pipeline (200) and the second pipeline (400).

3. The air jet mill auxiliary feeding device according to claim 2, characterized in that, The control component (600) includes a pressure reducing valve (610) and a gas supply switch (620). The inlet end of the gas supply switch (620) is connected to the gas source component (500), the outlet end of the gas supply switch (620) is connected to the inlet end of the pressure reducing valve (610), and the outlet end of the pressure reducing valve (610) is connected to the first pipeline (200) or the second pipeline (400).

4. The air jet mill auxiliary feeding device according to claim 3, characterized in that, The air jet mill auxiliary feeding device also includes: A fixing plate (310) is detachably connected to the vibrating component (300) and detachably connected to the feed hopper (700).

5. The air jet mill auxiliary feeding device according to claim 4, characterized in that, The fixing plate (310) is provided with a first connecting part (311) and a second connecting part (312). The first connecting part (311) is connected to the second connecting part (312). The first connecting part (311) is detachably connected to the vibration component (300). The second connecting part (312) is arc-shaped. The middle and end of the second connecting part (312) are respectively provided with connecting members. The second connecting part (312) is detachably connected to the feed hopper (700) through the connecting members.

6. The air jet mill auxiliary feeding device according to claim 1, characterized in that, The auxiliary air pipe (100) includes a connector (110) and a pipe body (120). The connector (110) is connected to the outside of the feed chamber (700). The pipe body (120) passes through the connector (110). The outlet end of the pipe body (120) extends into the feed chamber (700) and is positioned towards the feed inlet (730). The first pipeline (200) is connected to the inlet end of the connector (110).

7. The air jet mill auxiliary feeding device according to claim 6, characterized in that, The tube body (120) is provided with a wear-resistant layer, which is located on the outer surface of the tube body (120).

8. The air jet mill auxiliary feeding device according to claim 7, characterized in that, The thickness of the wear-resistant layer in the portion of the tube (120) extending into the interior of the feed hopper (700) is greater than the thickness of the wear-resistant layer in the portion located on the outside of the feed hopper (700).

9. An air jet mill, characterized in that, It includes a mill body (800), a feed bin (700), and an air jet mill auxiliary feeding device as described in any one of claims 1 to 8, wherein the inlet end of the mill body (800) is connected to the feed port (730) of the feed bin (700).

10. The air jet mill according to claim 9, characterized in that, The feed hopper (700) is provided with a feed pipe (720), the feed inlet (730) is located at the outlet end of the feed pipe (720), and the outlet portion of the auxiliary air pipe (100) is arranged parallel to the feed pipe (720).

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