Powder production system
By introducing sensors and control systems into the powder production system, the material conveying and mixing processes are automatically adjusted, solving the problem of uneven crushing and mixing, and improving the automation and efficiency of powder production.
Patent Information
- Application Number
- CN202520520074.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing powder production equipment is prone to overfilling of the material hopper under sealed vacuum conditions, resulting in poor pulverization effect. Overfilling of the mixing hopper affects the uniformity of mixing and requires manual intervention, which seriously affects production efficiency.
A powder production system was designed, including a feeding device, a material conveying device, a crushing device, a vacuum conveying device, a mixing device, and a control system. The system uses sensors to detect the amount of material accumulated in each hopper and the uniformity of mixing, and the control device automatically adjusts the material conveying speed and the mixing process to achieve automated control.
It enables automated control of the powder production process in a sealed environment, avoiding problems such as material accumulation in the silo and uneven mixing, and improving production efficiency and powder quality.
Smart Images
Figure CN223945524U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a powder production system. BACKGROUND
[0002] The existing powder production equipment usually carries out powder production under the condition of sealed vacuum to ensure that the powder is clean and dry. However, during the production of the powder, the powder crushing material bin is prone to overfilling, which leads to poor crushing effect. Alternatively, a plurality of types of powder in the mixing bin are prone to overfilling, which affects the mixing uniformity and even interrupts the mixing operation. Moreover, after the above-mentioned situations occur, manual checking of the causes of each component is required, which seriously affects the efficiency of the powder production. Therefore, there is an urgent need for a solution. SUMMARY
[0003] The utility model aims to provide a powder production system capable of automatically controlling the overstock of each bin during the powder production process and controlling the mixing uniformity of the material.
[0004] The specific technical solutions are as follows:
[0005] A powder production system comprises a feeding device, a material conveying device, a crushing device, a vacuum material conveying device, a mixing device, and a control system.
[0006] The material conveying device is used to convey the material in the feeding device to the crushing device.
[0007] The crushing device is used to crush the material conveyed by the material conveying device.
[0008] The vacuum material conveying device is used to supply the crushed material from the crushing device to the mixing device. The control system comprises a control device and a detection device.
[0009] The detection device comprises a first sensor and / or a second sensor. The first sensor is used to detect the overstock of the content in the crushing device, and the second sensor is used to detect the overstock of the content in the mixing device. The control device is electrically connected to the detection device and is used to control the material conveying speed of the material conveying device according to the feedback of the detection device.
[0010] In one embodiment, the material conveying device comprises a conveying pipeline and a conveying member. At least part of the conveying pipeline is provided with the conveying member.
[0011] The conveying member rotates to push the material from the feeding device to the crushing device.
[0012] The control device can control the material conveying speed of the material conveying device by controlling the rotation speed of the conveying member.
[0013] In one embodiment, the conveying pipeline comprises a first conveying pipeline and a second conveying pipeline connected in sequence;
[0014] The first conveying pipeline is horizontally arranged and one end thereof is connected with the feeding device, and the conveying member is arranged in the first conveying pipeline;
[0015] One end of the second conveying pipeline is connected with the first conveying pipeline, and the other end thereof is connected with the crushing device.
[0016] In one embodiment, the crushing device comprises a first buffer bin for buffering the material to be crushed, and the first sensor is arranged in the first buffer bin for detecting the accumulation amount of the contents in the first buffer bin, and the accumulation amount of the contents in the first buffer bin is taken as the accumulation amount of the contents in the crushing device.
[0017] In one embodiment, the detecting device further comprises a third sensor, and the control device is electrically connected with the third sensor; the third sensor is used for detecting the mixing uniformity of the material in the mixing device, and the control device is used for controlling whether the mixing device discharges according to the feedback of the third sensor.
[0018] In one embodiment, the mixing device comprises a powder discharge port and a discharge valve arranged at the powder discharge port; the control device controls whether the mixing device discharges by controlling the opening and closing of the discharge valve.
[0019] In one embodiment, the mixing device comprises a mixing bin and a mixing mechanism arranged in the mixing bin;
[0020] The mixing bin receives the material supplied by the vacuum feeding device; the mixing mechanism comprises a rotating shaft, a first mixing member and a second mixing member which rotate around the rotating shaft and rotate with the rotating shaft; the first mixing member and the second mixing member have opposite screw directions, and the first mixing member and the second mixing member respectively have different rotating radii from the rotating shaft, so as to push the material in the mixing bin in opposite directions when the rotating shaft rotates.
[0021] In one embodiment, the mixing mechanism further comprises a third mixing member and a fourth mixing member which rotate around the rotating shaft and rotate with the rotating shaft;
[0022] The third mixing member and the fourth mixing member have opposite screw directions, and the third mixing member and the fourth mixing member respectively have different rotating radii from the rotating shaft, so as to push the material in the mixing bin in opposite directions when the rotating shaft rotates.
[0023] The first mixing component and the second mixing component form a first mixing assembly, and the third mixing component and the fourth mixing component form a second mixing assembly, and the first mixing assembly and the second mixing assembly are arranged along the axial direction of the rotating shaft.
[0024] In one embodiment, the vacuum material conveying device comprises a vacuum bin, a vacuum pipe and a vacuum pump.
[0025] The vacuum pipe connects the vacuum pump and the vacuum bin, and the vacuum bin receives the material crushed by the crushing device and buffers the material to be sent into the mixing device.
[0026] The second sensor is arranged on the vacuum bin to detect the accumulation amount of the material in the vacuum bin, and the accumulation amount of the material in the vacuum bin is the accumulation amount of the material in the mixing device.
[0027] In one embodiment, the vacuum material conveying device further comprises a control valve, a blowing valve and / or a vibrating component, the control valve is used to control whether the material in the vacuum bin is sent into the mixing device, the blowing valve is used to blow off the powder in the filter element at the connection between the vacuum pipe and the vacuum bin, and the vibrating component is used to shake off the powder adhered to the inner wall of the vacuum bin.
[0028] Beneficial effects: compared with the prior art, the powder production system realizes the production of powder in a sealed environment under the connection relationship from the material supply device to the mixing device, and is provided with a control system, the control system detects the accumulation amount of the crushing device or detects the accumulation amount of the mixing device, and controls the material conveying speed of the material conveying device according to the detection feedback information, so as to realize the automatic control of the accumulation amount of each bin in the powder production process; and the control system can also control the mixing uniformity of the material and the production efficiency of the powder. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 is a three-dimensional schematic view of the powder production system according to the embodiment of the present application;
[0030] Figure 2 is a block diagram of the control system of the powder production system according to the embodiment of the present application; Figure 1
[0031] is a block diagram of the control system of another embodiment of the powder production system according to the embodiment of the present application; Figure 3 Figure 1 is a connection schematic view of the material supply device, the material conveying device and the crushing device of the powder production system according to the embodiment of the present application;
[0032] Figure 4 Figure 1
[0033] Figure 5 is a schematic view of a mixing device in a powder production system of Figure 1 is a schematic view of a mixing device in a powder production system of
[0034] Figure 6 is a schematic view of a mixing device in a powder production system of Figure 5 is a schematic view of a mixing device in a powder production system of
[0035] Figure 7 is a schematic view of a mixing device in a powder production system of
[0036] Figure 8 is a schematic view of a mixing device in a powder production system of Figure 1 is a schematic view of a vacuum conveying device in a powder production system of
[0037] Reference signs:
[0038] A powder production system 100;
[0039] 10, a feeding device; 20, a material conveying device; 30, a crushing device; 40, a vacuum conveying device; 50, a mixing device; 70, a control system;
[0040] 22, a conveying pipe; 23, a first section of the conveying pipe; 24, a second section of the conveying pipe; 26, a conveying member;
[0041] 32, a first buffer bin;
[0042] 41, a vacuum bin; 42, a vacuumizing pipe; 43, a vacuum pump; 44, a transfer pipe; 45, a control valve; 47, a blowing valve; 48, a vibrating member;
[0043] 51, a mixing bin; 52, a powder discharge port; 60, a mixing mechanism; 61, a rotating shaft; 63, a first mixing member; 64, a second mixing member; 65, a third mixing member; 66, a fourth mixing member;
[0044] 72, a control device; 721, a first sub-controller; 722, a second sub-controller; 723, a third sub-controller; 76, a detection device; 761, a first sensor; 762, a second sensor; 763, a third sensor. DETAILED DESCRIPTION
[0045] The present application will be further described below in conjunction with the drawings and examples in the embodiments of the present application. In the present application, the content can be material or powder. When referring to the content, it can refer to material to be crushed or powder to be conveyed into the mixing device. The specific interpretation can be made according to the actual situation.
[0046] Please refer to Figure 1 and Figure 2The utility model embodiment provides a kind of powder production system 100, including feeding device 10, material conveying device 20, pulverizing device 30, vacuum material conveying device 40, mixing device 50 and control system 70.Specifically, material conveying device 20 is used to convey the material in feeding device 10 to pulverizing device 30.Pulverizing device 30 is used to pulverize the material conveyed by material conveying device 20.Vacuum material conveying device 40 is used to supply the material pulverized by pulverizing device 30 to mixing device 50.Mixing device 50 is used to mix the material pulverized by vacuum material conveying device 40 uniformly.
[0047] Wherein, please refer to Figure 2 , control system 70 includes control device 72 and detection device 76, control device 72 is electrically connected with detection device 76, for according to the feedback of detection device 76 control material conveying device 20's material conveying speed.Specifically, detection device 76 includes first sensor 761 and second sensor 762.First sensor 761 is used to detect the backlog of content in pulverizing device 30.Second sensor 762 is used to detect the backlog of content in mixing device 50.
[0048] Control device 72 controls the conveying speed of material conveying device 20 according to the backlog of content in pulverizing device 30 fed back by first sensor 761.For example, control device 72 is provided with the upper limit position and the lower limit position of the corresponding backlog of pulverizing device 30, when control device 72 receives the backlog of content in pulverizing device 30 fed back by first sensor 761 close to the upper limit position, then slow down the conveying speed of material conveying device 20;Or control device 72 receives the backlog of content in pulverizing device 30 fed back by first sensor 761 exceeds the upper limit position, then stop the conveying of material conveying device 20.When control device 72 receives the backlog of content in pulverizing device 30 fed back by first sensor 761 close to the lower limit position or below the lower limit position, then speed up the conveying speed of material conveying device 20.Similarly, control device 72 can also control the conveying speed of material conveying device 20 according to the backlog of content in mixing device 50 fed back by second sensor 762.So, realize the automatic control of the backlog of content in each bin in powder production process.It can be understood that according to the feedback of any one of first sensor 761, second sensor 762, or according to the feedback of both sensors of first sensor 761, second sensor 762, the backlog of content in each bin in powder production process can be automatically controlled.
[0049] Please refer to Figure 1 And Figure 4 In the embodiment, material conveying device 20 includes conveying pipe 22 and conveying member 26;At least part of conveying pipe 22 is provided with conveying member 26.
[0050] Preferably, referring to Figure 4 , the rotation of the conveying member 26 is capable of pushing the material from the feeding device 10 to the crushing device 30. The control device 72 controls the material conveying speed of the material conveying device 20 by controlling the rotation speed of the conveying member 26. In some embodiments, the outer surface of the conveying member 26 is provided with a spiral structure, thereby facilitating the conveying of the material. In some embodiments, the material conveying device 20 further comprises a driving mechanism (not shown in the figure) for driving the rotation of the conveying member 26. Specifically, the conveying pipe 22 comprises a first conveying pipe 23 and a second conveying pipe 24 which are sequentially connected; one end of the first conveying pipe 23 is connected with the feeding device 10; the other end of the first conveying pipe 23 is connected with one end of the second conveying pipe 24; the other end of the second conveying pipe 24 is connected with the crushing device 30. Preferably, the first conveying pipe 23 is horizontally arranged. The conveying member 26 is arranged through the horizontally arranged first conveying pipe 23. In this way, the horizontally arranged first conveying pipe 23 is capable of reducing the influence of natural gravity and is capable of completely controlling the material conveying speed by controlling the rotation speed of the conveying member 26. The slower the rotation speed of the conveying member 26, the slower the material conveying speed; the faster the rotation speed of the conveying member 26, the faster the material conveying speed. In some embodiments, the first conveying pipe 23 is horizontally arranged, while the second conveying pipe 24 is arranged along the direction of gravity, so that the material is conveyed in the first conveying pipe 23 by the pushing of the conveying member 26, and is then conveyed to the starting end of the second conveying pipe 24 by the first conveying pipe 23, and then falls into the crushing device 30 under the action of the pushing force of the conveying member 26 and gravity. In some embodiments, the outer walls of the first conveying pipe 23 and the second conveying pipe 24 are both coated with a heat preservation layer, thereby effectively improving the dryness of the material.
[0051] Preferably, referring to Figure 1 , Figure 2 and Figure 4 , in the present embodiment, the crushing device 30 comprises a first buffer bin 32 for buffering the material to be crushed; the first sensor 761 is arranged to the first buffer bin 32 for detecting the backlog of the contents in the first buffer bin 32, and the backlog of the contents in the first buffer bin 32 serves as the backlog of the crushing device 30. In some embodiments, the crushing device 30 is connected with the vacuum material conveying device 40 through the transfer pipe 44.
[0052] Preferably, referring to Figure 5 , in the present embodiment, the mixing device 50 comprises a mixing bin 51, a powder discharge port 52 and a discharge valve arranged at the powder discharge port 52. The mixing bin 51 receives and stores the material supplied by the vacuum material conveying device 40.
[0053] Preferably, referring to Figure 2 andFigure 5 Further, the detecting device 76 further comprises a third sensor 763, and the control device 72 is electrically connected with the third sensor 763. The third sensor 763 is used to detect the mixing uniformity of the material in the mixing device 50. The control device 72 is used to control whether the mixing device 50 discharges according to the feedback of the third sensor 763. When the control device 72 controls the mixing device 50 to discharge according to the feedback of the third sensor 763, the mixing uniformity of the material in the mixing device 50 is up to the standard. Otherwise, when the feedback of the third sensor 763 indicates that the mixing uniformity of the material in the mixing device 50 is not up to the standard, the control device 72 controls the mixing device 50 not to discharge. By setting the third sensor 763, the mixing device 50 can automatically discharge.
[0054] The second sensor 762 and the third sensor 763 are respectively arranged in the mixing bin 51. The second sensor 762 detects the accumulated amount of the material in the mixing bin 51. The accumulated amount of the material in the mixing bin 51 is the accumulated amount of the material in the mixing device 50. The third sensor 763 detects whether the mixing uniformity of the material in the mixing bin 51 is up to the standard and feeds back to the control device 72. The control device 72 controls the opening of the discharge valve so that the material in the mixing bin 51 is discharged from the powder discharge outlet 52. Otherwise, when the third sensor 763 detects that the mixing uniformity of the material in the mixing bin 51 is not up to the standard, the third sensor 763 feeds back to the control device 72, and the control device 72 controls the discharge valve to be in the closed state, thereby controlling the powder discharge outlet 52 not to discharge.
[0055] In other embodiments, please refer to Figure 3 The control device 72 is a general control body composed of multiple sub-controllers, which comprises a first sub-controller 721, a second sub-controller 722 and a third sub-controller 723 electrically connected with the first sensor 761, the second sensor 762 and the third sensor 763 respectively. Specifically, the first sub-controller 721 receives the feedback of the first sensor 761 to control the material conveying speed of the material conveying device 20; the second sub-controller 722 receives the feedback of the second sensor 762 to control the material conveying speed of the material conveying device 20; and the third sub-controller 723 receives the feedback of the third sensor 763 to control whether the discharge valve at the powder discharge outlet 52 discharges.
[0056] Please refer to Figure 5 , Figure 6 and Figure 7Further, the mixing device 50 further comprises a mixing mechanism 60 arranged in the mixing bin 51. The mixing mechanism 60 comprises a rotating shaft 61, a first mixing member 63 and a second mixing member 64. The first mixing member 63 and the second mixing member 64 are arranged around the rotating shaft 61 and rotate with the rotating shaft 61. The first mixing member 63 and the second mixing member 64 have opposite screw directions, so that the first mixing member 63 and the second mixing member 64 respectively push the material in the mixing bin 51 in opposite directions when the rotating shaft 61 rotates. Specifically, the first mixing member 63 and the second mixing member 64 are different in distance from the rotating shaft 61, i.e. the rotating radius of the first mixing member 63 rotating with the rotating shaft 61 is different from the rotating radius of the second mixing member 64 rotating with the rotating shaft 61, so as to push the material in the mixing bin 51. In some embodiments, the radius of the first mixing member 63 is smaller than the radius of the second mixing member 64 as viewed from the axial direction of the rotating shaft 61.
[0057] The mixing mechanism 60 further comprises a third mixing member 65 and a fourth mixing member 66. The third mixing member 65 and the fourth mixing member 66 are arranged around the rotating shaft 61 and rotate with the rotating shaft 61. The third mixing member 65 and the fourth mixing member 66 have opposite screw directions, and the third mixing member 65 and the fourth mixing member 66 are different in distance from the rotating shaft 61, so as to push the material in the mixing bin 51 in opposite directions when the rotating shaft 61 rotates. Specifically, the third mixing member 65 and the fourth mixing member 66 are different in distance from the rotating shaft 61, i.e. the rotating radius of the third mixing member 65 rotating with the rotating shaft 61 is different from the rotating radius of the fourth mixing member 66 rotating with the rotating shaft 61, so as to push the material in the mixing bin 51. In some embodiments, the radius of the third mixing member 65 is greater than the radius of the fourth mixing member 66 as viewed from the axial direction of the rotating shaft 61.
[0058] The first mixing member 63 and the second mixing member 64 form a first mixing assembly, and the third mixing member 65 and the fourth mixing member 66 form a second mixing assembly. The first mixing assembly and the second mixing assembly are arranged along the axial direction of the rotating shaft 61. That is, the mixing mechanism 60 of the present application is a segmented spiral mixing assembly, which increases the convection and shearing of the material and effectively improves the mixing speed and uniformity of the material, thereby improving the production efficiency of the powder.
[0059] Please refer to Figure 1 and Figure 8 In the embodiment, the vacuum material conveying device 40 comprises a vacuum bin 41, a vacuum pipe 42 and a vacuum pump 43. The vacuum pipe 42 connects the vacuum pump 43 and the vacuum bin 41. The vacuum bin 41 is used to receive the material crushed by the crushing device 30 and buffer the material to be sent to the mixing device 50. In some embodiments, the transfer pipe 44 is a component of the vacuum material conveying device 40. One end of the transfer pipe 44 is connected to the crushing device 30, and the other end is connected to the vacuum bin 41.
[0060] In the powder production process, the vacuum pump 43 is not started when the material is supplied to the feeding device 10, and the vacuum pump 43 is started when the feeding device 10 supplies the material to the crushing device 30 and the material enters the vacuum bin 41 from the crushing device 30. Preferably, a filter element is arranged at the connection between the vacuum pipe 42 and the vacuum bin 41 to prevent the vacuum pump 43 in the starting state from sucking the material.
[0061] Please refer to Figure 1 , Figure 2 and Figure 8 In another embodiment, the second sensor 762 is arranged to the vacuum bin 41, which is used to detect the accumulation amount of the content in the vacuum bin 41. The accumulation amount of the content in the vacuum bin 41 is the accumulation amount of the content in the mixing device 50. That is, the accumulation amount of the content in the mixing device 50 is directly fed back through the accumulation amount of the content in the vacuum bin 41. The vacuum feeding device 40 comprises a control valve 45, which is used to control whether the material in the vacuum bin 41 is sent to the mixing device 50. Specifically, the control valve 45 can deliver the material in the vacuum bin 41 to the mixing device 50 at a time or intermittently. Preferably, the control valve 45 is an electromagnetic valve.
[0062] In the embodiment, the vacuum feeding device 40 further comprises a blowing valve 47 and a vibrating member 48. The blowing valve 47 is used to blow off the powder in the filter element at the connection between the vacuum pipe 42 and the vacuum bin 41, and the vibrating member 48 is used to shake off the powder adhered to the inner wall of the vacuum bin 41. In some embodiments, the vibrating member 48 is selected as an air hammer.
[0063] The above embodiments only express the preferred embodiments of the present application, which are described in detail and specifically, but cannot be understood as the limitation of the patent scope of the present application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, such as the combination of different features in each embodiment, which all belong to the protection scope of the present application.
Claims
1. A powder production system, characterized by, The device comprises a feeding device (10), a material conveying device (20), a crushing device (30), a vacuum material conveying device (40), a mixing device (50) and a control system (70); The material conveying device (20) is used for conveying the material in the feeding device (10) to the crushing device (30); The crushing device (30) is used for crushing the material conveyed by the material conveying device (20); The vacuum material conveying device (40) is used for supplying the crushed material in the crushing device (30) to the mixing device (50); The control system (70) comprises a control device (72) and a detection device (76); the detection device (76) comprises a first sensor (761) and / or a second sensor (762); The first sensor (761) is used for detecting the backlog of the content in the crushing device (30), the second sensor (762) is used for detecting the backlog of the content in the mixing device (50), and the control device (72) is electrically connected with the detection device (76) and is used for controlling the material conveying speed of the material conveying device (20) according to the feedback of the detection device (76).
2. The powder production system according to claim 1, characterized by The material conveying device (20) comprises a conveying pipeline (22) and a conveying member (26); At least part of the conveying pipeline (22) is provided with the conveying member (26); The conveying member (26) rotates to push the material from the feeding device (10) to the crushing device (30); The control device (72) can control the material conveying speed of the material conveying device (20) by controlling the rotating speed of the conveying member (26).
3. The powder production system according to claim 2, wherein The conveying pipeline (22) comprises a first conveying pipeline (23) and a second conveying pipeline (24) which are sequentially communicated; The first conveying pipeline (23) is horizontally arranged and one end thereof is communicated with the feeding device (10), and the conveying member (26) is arranged in the first conveying pipeline (23); One end of the second conveying pipeline (24) is communicated with the first conveying pipeline (23), and the other end thereof is communicated with the crushing device (30).
4. The powder production system according to claim 1, wherein The crushing device (30) comprises a first buffer bin (32) which is used for buffering the material to be crushed; The first sensor (761) is arranged in the first buffer bin (32) and is used for detecting the backlog of the content in the first buffer bin (32), and the backlog of the content in the first buffer bin (32) is regarded as the backlog of the content in the crushing device (30).
5. The powder production system according to any one of claims 1 to 4, characterized by, The detection device (76) further comprises a third sensor (763); The control device (72) is electrically connected with the third sensor (763); The third sensor (763) is used for detecting the mixing uniformity of the material in the mixing device (50), and the control device (72) is used for controlling whether the mixing device (50) discharges according to the feedback of the third sensor (763).
6. The powder production system according to claim 5, wherein The mixing device (50) comprises a powder discharge port (52) and a discharge valve arranged at the powder discharge port (52); the control device (72) controls whether the mixing device (50) discharges by controlling the opening and closing of the discharge valve.
7. The powder production system according to claim 1, wherein The mixing device (50) comprises a mixing bin (51) and a mixing mechanism (60) arranged in the mixing bin (51); The mixing bin (51) receives the material supplied by the vacuum material conveying device (40); the mixing mechanism (60) comprises a rotating shaft (61), a first mixing member (63) and a second mixing member (64) which surround the rotating shaft (61) and rotate with the rotating shaft (61); The first mixing member (63) and the second mixing member (64) have opposite helical directions, and the first mixing member (63) and the second mixing member (64) have different rotating radii from the rotating shaft (61), respectively.
8. The powder production system according to claim 7, wherein The mixing mechanism (60) further comprises a third mixing member (65) and a fourth mixing member (66) which surround the rotating shaft (61) and rotate with the rotating shaft (61); The third mixing member (65) and the fourth mixing member (66) have opposite helical directions, and the third mixing member (65) and the fourth mixing member (66) have different rotating radii from the rotating shaft (61), respectively. The first mixing member (63) and the second mixing member (64) form a first mixing assembly, and the third mixing member (65) and the fourth mixing member (66) form a second mixing assembly; the first mixing assembly and the second mixing assembly are arranged along the axial direction of the rotating shaft (61).
9. The powder production system according to claim 1, wherein The vacuum material conveying device (40) comprises a vacuum bin (41), a vacuum pipe (42) and a vacuum pump (43); The vacuum pipe (42) connects the vacuum pump (43) and the vacuum bin (41); the vacuum bin (41) receives the material crushed by the crushing device (30) and buffers the material to be sent to the mixing device (50); The second sensor (762) is arranged on the vacuum bin (41) to detect the accumulation amount of the contents in the vacuum bin (41), and the accumulation amount of the contents in the vacuum bin (41) is used as the accumulation amount of the contents in the mixing device (50).
10. The powder production system according to claim 9, wherein The vacuum material conveying device (40) further comprises a control valve (45), a blowing valve (47) and / or a vibrating member (48); The control valve (45) is used to control whether the material in the vacuum bin (41) is sent to the mixing device (50); the blowing valve (47) is used to blow off the powder in the filter element at the connection between the vacuum pipe (42) and the vacuum bin (41); and the vibrating member (48) is used to shake off the powder adhered to the inner wall of the vacuum bin (41).