Rapid and high-precision powder weighing equipment

Abstract

The invention belongs to the technical field of powder weighing, and particularly relates to powder rapid high-precision weighing equipment, which comprises a main frame body, a material storage device, a material distribution device, a material feeding device, a material supplementing device, an electronic balance and a material collecting funnel, and the material storage device, the material distribution device, the material feeding device, the material supplementing device, the electronic balance and the material collecting funnel are respectively arranged on the main frame body. Wherein the material distributing device is used for receiving powder from the material storing device and outputting the powder to the feeding device and the material supplementing device, the feeding device is used for feeding a large amount of materials, and the material supplementing device is used for supplementing a small amount of materials. The powder weighing device can solve the problems of low working efficiency and low automation degree in the powder weighing process, has the advantages of modular composition, simple structure, compact layout, high reliability, convenience in maintenance and the like, can automatically complete quick and accurate weighing of powder, can effectively prevent the powder from overflowing outwards in the use process, and is suitable for popularization and application. The dustproof effect and the working stability are effectively ensured, and flammable and explosive hidden dangers are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of powder weighing, in particular to a fast and high-precision powder weighing device. Background Art

[0002] Powder weighing is an important process in the production of flammable powders. In view of the low efficiency and low degree of automation in the current powder weighing process, it is necessary to analyze and study the process of powder weighing and develop a set of weighing equipment to automatically complete the fast and accurate weighing of powders to meet production needs, greatly improve product quality, reduce scrap rate, and improve economic benefits. Summary of the invention

[0003] In view of the above problems, the object of the present invention is to provide a fast and high-precision weighing device for powders.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A fast and high-precision weighing device for powdery materials, comprising a main frame, a material storage device, a material distribution device, a material feeding device, a material replenishing device, an electronic balance, and a material collecting funnel, wherein the material storage device, the material distribution device, the material feeding device, the material replenishing device, the electronic balance, and the material collecting funnel are respectively arranged on the main frame;

[0006] The detection end of the electronic balance is used to place a container for receiving powder and to weigh the powder in the container;

[0007] The aggregate funnel is located above the electronic balance, and has two upper and lower openings. The upper opening of the aggregate funnel is larger than the lower opening of the aggregate funnel, and the lower opening of the aggregate funnel is arranged at a position corresponding to the position of the detection end of the electronic balance;

[0008] The storage device is located at the upper part of the main frame, and is used to temporarily store powdery materials input from the outside;

[0009] The material dividing device is located below the material storage device, and has a material receiving end and two material output ends. The material dividing device is used to receive powder from the material storage device and output the received powder to the feeding device and the feeding device respectively;

[0010] The feeding device is located below the material dividing device, and is used to feed a large amount of material to the upper opening of the collecting hopper;

[0011] The feeding device is located below the material dividing device, and is used to feed a small amount of material to the upper opening of the collecting hopper.

[0012] The material storage device comprises a material storage barrel, a pinch valve, a fixed barrel cover, a movable barrel cover, a pressure sensor, a vibrator A, a cover opening cylinder, and a cover opening cylinder mounting frame;

[0013] The top of the material storage barrel is provided with an opening, and the top opening of the material storage barrel is used to input powder from the outside of the material storage barrel to the inside of the material storage barrel. The bottom of the material storage barrel is provided with a discharge port, and the pinch valve is installed on the discharge port of the material storage barrel, and the pinch valve is connected to the material receiving end of the material distribution device. The movable barrel cover is connected to the fixed barrel cover by a hinge, and the fixed barrel cover is fixed to the material storage barrel. The movable barrel cover and the fixed barrel cover are used together to close the top opening of the material storage barrel, one end of the cover-opening cylinder is hinged to the movable barrel cover, and the other end of the cover-opening cylinder is hinged to the cover-opening cylinder mounting frame, and the cover-opening cylinder mounting frame is fixed to the main frame;

[0014] A plurality of pressure sensors are connected to the outer surface of the material storage barrel in a circumferential direction, and each of the pressure sensors is fixedly connected to the main frame, respectively. The vibrator A is also installed on the outer surface of the material storage barrel.

[0015] The upper part of the main frame is also equipped with a shell of a stirring motor, the output end of the stirring motor is connected to the upper end of a stirring shaft, the lower end of the stirring shaft passes through the fixed barrel cover and extends to the inside of the storage barrel, and the lower end of the stirring shaft is equipped with a stirring paddle.

[0016] The material distributing device comprises a material distributing chamber, a material distributing chamber mounting frame, a rotating baffle, a baffle driving cylinder, and a driving connecting rod;

[0017] The material distribution chamber is installed on the main frame through the material distribution chamber mounting frame, and a feed port is opened on the top of the material distribution chamber, and the feed port of the material distribution chamber serves as a material receiving end of the material distribution device. The bottom of the material distribution chamber is divided into two material channel parts, and the bottom of each material channel part of the material distribution chamber is provided with a discharge port, and the discharge port of the material channel part of one of the material distribution chambers is used as one of the material output ends of the material distribution device in conjunction with the feeding device, and the discharge port of the material channel part of the other material distribution chamber is used as another material output end of the material distribution device in conjunction with the feeding device. A rotating baffle is provided inside the material channel part of the chamber, and each of the rotating baffles has a rotating shaft part. The rotating shaft part of each rotating baffle is rotatably connected to the material channel part of the corresponding material distribution chamber, and the rotating shaft part of each rotating baffle extends to the outside of the material distribution chamber. Two baffle driving cylinders are provided, and one end of each baffle driving cylinder is hinged to the rear side surface of the material distribution chamber, and the other end of each baffle driving cylinder is hinged to one end of a corresponding driving connecting rod, and the other end of each driving connecting rod is hinged to the rotating shaft part of the corresponding rotating baffle.

[0018] A vibrator B is provided on the outer side of the material distribution chamber.

[0019] An observation port is provided on the material distribution chamber at positions corresponding to the two material channel parts of the material distribution chamber, and a transparent cover plate for closing the observation port of the material distribution chamber is provided on the material distribution chamber. A flameproof cover mounting frame is installed on the main frame, and a flameproof cover is installed on the flameproof cover mounting frame. A visual camera and a light source are respectively installed inside the flameproof cover, and a light window is provided on the flameproof cover. The light window of the flameproof cover and the lens of the visual camera are both facing the observation port of the material distribution chamber.

[0020] The feeding device includes a feeding device frame, a conveyor belt, and a conveyor belt driving motor. The feeding device frame is fixedly connected to the main frame. The conveyor belt and the conveyor belt driving motor are respectively arranged on the feeding device frame. The conveyor belt driving motor is located at the lower side of the conveyor belt. The conveyor belt driving motor is used to provide power to the conveyor belt. The conveyor belt is located below one of the material output ends of the dividing device, and one end of the conveyor belt extends to above the upper opening of the collecting funnel.

[0021] A scraper plate and a material receiving box are also installed on the base frame of the feeding device. The scraper plate is located on the lower side of one end of the conveyor belt close to the collecting funnel, and the material receiving box is also located on the lower side of the conveyor belt. A dust cover A is installed on the outer frame of the conveyor belt itself.

[0022] The feeding device includes a feeding device base, a vibrator, and a receiving groove. The feeding device base is fixedly connected to the main frame, the shell of the vibrator is installed on the feeding device base, the receiving groove is arranged on the vibration output end of the vibrator, and the receiving groove is located below another material output end of the dividing device.

[0023] A dust cover B is installed on the outer side of the receiving groove.

[0024] The advantages and positive effects of the present invention are:

[0025] The present invention can solve the problems of low working efficiency and low degree of automation in the powder weighing process, and has the advantages of modular composition, simple structure, compact layout, high reliability, easy maintenance, etc. It can automatically complete the rapid and accurate weighing of powders, improve product quality, and effectively prevent powders from spilling out during use, effectively ensuring dustproof effect and working stability, and avoiding the hidden dangers of flammable and explosive substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the material storage device of the present invention;

[0028] Figure 3 This is a schematic structural diagram of the material dividing device of the present invention after the transparent cover plate is removed;

[0029] Figure 4 It is a structural schematic diagram of the rear side of the material distribution device of the present invention;

[0030] Figure 5 It is a schematic diagram of the arrangement structure of the flameproof cover mounting frame, the flameproof cover, the visual camera and the light source of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the feeding device of the present invention;

[0032] Figure 7 It is a schematic structural diagram of the feeding device of the present invention.

[0033] In the figure: 1 is the main frame, 100 is the receiving platform part, 2 is the material storage device, 3 is the material distribution device, 4 is the material feeding device, 5 is the material replenishing device, 6 is the electronic balance, and 7 is the collecting funnel;

[0034] 8 is a material storage barrel, 9 is a pinch valve, 10 is a fixed barrel cover, 11 is a movable barrel cover, 12 is a pressure sensor, 13 is a vibrator A, 14 is a cover-opening cylinder, 15 is a cover-opening cylinder mounting frame, 16 is a stirring motor, 17 is a stirring shaft, and 18 is a stirring paddle;

[0035] 19 is a material distribution chamber, 1900 is a material channel part, 20 is a material distribution chamber mounting frame, 21 is a rotating baffle, 22 is a baffle driving cylinder, 23 is a driving connecting rod, 24 is a vibrator B, and 25 is a transparent cover plate;

[0036] 26 is a flameproof cover mounting frame, 27 is a flameproof cover, 28 is a visual camera, and 29 is a light source;

[0037] 30 is a feeding device frame, 31 is a conveyor belt, 32 is a conveyor belt driving motor, 33 is a scraper plate, 34 is a receiving box, and 35 is a dust cover A;

[0038] 36 is a base of the feeding device, 37 is a vibrator, 38 is a receiving groove, and 39 is a dust cover B;

[0039] 40 is a light transmission plate;

[0040] 001 is the container. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-7 The present invention is further described in detail.

[0042] A fast and high-precision weighing device for powders, such as Figure 1-7 As shown, in this embodiment, the main frame 1, the storage device 2, the material distribution device 3, the feeding device 4, the feeding device 5, the electronic balance 6, and the collecting funnel 7 are respectively arranged on the main frame 1. In this embodiment, the main frame 1 serves as the installation and adjustment base of the entire equipment, and is made of steel after welding and fine processing.

[0043] The detection end of the electronic balance 6 is used to place a container 001 for receiving powder and to weigh the powder in the container 001. The container 001 may be a measuring cup or the like. The main frame 1 may be provided with a receiving platform 100 for conveniently placing the electronic balance 6. In this embodiment, the electronic balance 6 may be a commercially available electronic balance product with sufficient accuracy according to the use requirements. The electronic balance 6 is also connected to communicate with an external control system. The electronic balance 6 obtains weight information and can feed back to the external control system. The setting method of the external control system adopts the existing technology.

[0044] The aggregate funnel 7 is located above the electronic balance 6. The aggregate funnel 7 has two upper and lower openings. The upper opening of the aggregate funnel 7 is larger than the lower opening of the aggregate funnel 7. The lower opening of the aggregate funnel 7 is arranged at a position corresponding to the position of the detection end of the electronic balance 6. In this embodiment, part of the side wall of the upper opening of the aggregate funnel 7 can extend upward to play a certain role in preventing dust and preventing powder from scattering outward.

[0045] The material storage device 2 is located at the upper part of the main frame 1 and is used for temporarily storing powdery materials input from the outside.

[0046] The material dividing device 3 is located below the material storage device 2. The material dividing device 3 has a material receiving end and two material output ends. The material dividing device 3 is used to receive powder from the material storage device 2 and output the received powder to the feeding device 4 and the feeding device 5 respectively.

[0047] The feeding device 4 is located below the material dividing device 3 , and is used to feed a large amount of material to the upper opening of the collecting hopper 7 .

[0048] The feeding device 5 is located below the material distributing device 3 , and is used to feed a small amount of material to the upper opening of the collecting hopper 7 .

[0049] Specifically, if Figure 1 and Figure 2 As shown, in this embodiment, the material storage device 2 includes a material storage barrel 8, a clamping valve 9, a fixed barrel cover 10, a movable barrel cover 11, a pressure sensor 12, a vibrator A13, a cover opening cylinder 14, and a cover opening cylinder mounting frame 15.

[0050] The top of the storage barrel 8 has an opening, and the top opening of the storage barrel 8 is used to input powder from the outside of the storage barrel 8 to the inside of the storage barrel 8. The bottom of the storage barrel 8 is provided with a discharge port, and a clamping valve 9 is installed on the discharge port of the storage barrel 8. The clamping valve 9 is connected to the material receiving end of the material distribution device 3. In this embodiment, the clamping valve 9 adopts a commercially available pneumatic clamping valve product, and the action is controlled by an external control system to control the action of the clamping valve 9 to control whether the discharge port of the storage barrel 8 can discharge the material. The movable barrel cover 11 is connected to the fixed barrel cover 10 by a hinge, and the fixed barrel cover 10 is fixed to the storage barrel 8. The movable barrel cover 11 and the fixed barrel cover 10 are used together to close the top opening of the storage barrel 8. One end of the opening cylinder 14 is hinged to the movable barrel cover 11, and the other end of the opening cylinder 14 is hinged to the opening cylinder mounting frame 15, and the opening cylinder mounting frame 15 is fixed to the main frame 1. In this embodiment, the cover-opening cylinder 14 is a commercial product, and its action is controlled by an external control system. By controlling the telescopic action of the cover-opening cylinder 14, the opening and closing of the movable barrel cover 11 can be controlled. Three pressure sensors 12 are evenly connected to the circumferential direction of the upper edge of the outer surface of the storage barrel 8, and each pressure sensor 12 is respectively fixed to the main frame 1, and a vibrator A13 is also installed on the outer surface of the storage barrel 8. In this embodiment, each pressure sensor 12 is a commercial product, which is connected and communicated with the external control system. Through the setting of the pressure sensor 12, it is possible to monitor in real time whether the powder in the storage barrel 8 is sufficient. In this embodiment, the vibrator A13 is also a commercial product, and its action is controlled by an external control system. Vibrating the vibrator A13 can prevent the powder from adhering to the inner wall of the storage barrel 8.

[0051] In this embodiment, the upper part of the main frame 1 is also equipped with a housing of a stirring motor 16, the output end of the stirring motor 16 is connected to the upper end of a stirring shaft 17 through a coupling, the lower end of the stirring shaft 17 passes through the fixed barrel cover 10 and extends to the inside of the storage barrel 8, and the lower end of the stirring shaft 17 is equipped with a stirring paddle 18. In this embodiment, the fixed barrel cover 10 is also provided with a bearing seat and a rotating bearing for the stirring shaft 17 to pass through and rotate and connect, so as to ensure that the stirring shaft 17 rotates smoothly and stably. In this embodiment, the stirring motor 16 adopts a commercially available product, and the action is controlled by an external control system. The stirring motor 16 drives the stirring shaft 17 to rotate, and the stirring paddle 18 can stir the powder in the storage barrel 8, which is convenient for uniformly mixing the powder, and can also prevent the powder from agglomerating and fall more smoothly.

[0052] Specifically, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the material distributing device 3 in this embodiment includes a material distributing chamber 19 , a material distributing chamber mounting frame 20 , a rotating baffle 21 , a baffle driving cylinder 22 , and a driving connecting rod 23 .

[0053] The material distribution chamber 19 is installed on the main frame 1 through the material distribution chamber mounting frame 20. A feed port is provided at the top of the material distribution chamber 19, and the feed port of the material distribution chamber 19 serves as the material receiving end of the material distribution device 3. In this embodiment, the clamp valve 9 can be inserted into the feed port of the material distribution chamber 19 to prevent the powder from being scattered outside the equipment. The bottom of the material distribution chamber 19 is divided into two material channel parts 1900, and the bottom of the material channel part 1900 of each material distribution chamber 19 is provided with a discharge port, and the discharge port of the material channel part 1900 of one of the material distribution chambers 19 is used as one of the material output ends of the material distribution device 3 in conjunction with the feeding device 4, and the discharge port of the material channel part 1900 of the other material distribution chamber 19 is used as another material output end of the material distribution device 3 in conjunction with the feeding device 5.

[0054] A rotating baffle 21 is provided inside the material channel portion 1900 of each material distribution chamber 19, and each rotating baffle 21 has a rotating shaft portion, and the rotating shaft portion of each rotating baffle 21 is rotatably connected to the material channel portion 1900 of the corresponding material distribution chamber 19, and the rotating shaft portion of each rotating baffle 21 extends to the outside of the material distribution chamber 19. Two baffle driving cylinders 22 are provided, and one end of each baffle driving cylinder 22 is hinged on the rear side of the material distribution chamber 19, and the other end of each baffle driving cylinder 22 is hinged to one end of a corresponding driving connecting rod 23, and the other end of each driving connecting rod 23 is hinged to the rotating shaft portion of a corresponding rotating baffle 21. In this embodiment, the baffle driving cylinder 22 adopts a commercially available product, and the action is controlled by an external control system. The control baffle driving cylinder 22 can extend and retract, and can drive the corresponding rotating baffles 21 to rotate around the axis of the rotating shaft of the rotating baffle 21 by driving the connecting rod 23, so that the rotating baffle 21 can block the powder from falling or release the powder in the material channel part 1900 of the corresponding material distribution chamber 19.

[0055] In this embodiment, two vibrators B 24 are provided on the outer surface of the material distributing chamber 19. In this embodiment, the vibrators B 24 are also commercially available products, and their actions are controlled by an external control system. Vibrating the vibrators B 24 can prevent the powder from adhering to the inner wall of the material distributing chamber 19.

[0056] In this embodiment, the material distribution chamber 19 is provided with an observation port corresponding to the two material channels 1900 of the material distribution chamber 19. The material distribution chamber 19 is provided with a transparent cover plate 25 for closing the observation port of the material distribution chamber 19 through hinges and locks, which can facilitate viewing of the internal conditions of the two material channels 1900 of the material distribution chamber 19 and is also convenient for opening for maintenance and cleaning. Figure 1 and Figure 5As shown, two explosion-proof cover mounting frames 26 are installed on the main frame 1, and an explosion-proof cover 27 is installed on each explosion-proof cover mounting frame 26. A visual camera 28 and a light source 29 are installed inside each explosion-proof cover 27. A light passing window is provided on the explosion-proof cover 27. The light passing window of the explosion-proof cover 27 and the lens of the visual camera 28 are both directed toward the observation port of the material distribution chamber 19. In this embodiment, two visual cameras 28 are arranged, and the visual cameras 28 are all commercially available products. The two visual cameras 28 are respectively connected and communicated with an external control system. Each visual camera 28 is used to monitor the amount of powder in a corresponding material channel part 1900 of the material distribution chamber 19, and when the remaining material in the material channel part 1900 is insufficient, it can promptly feedback to the system. In this embodiment, the light source 29 is a commercially available annular light source product, and the light source 29 is controlled by an external control system to supplement the brightness required for the visual camera 28 to detect. In this embodiment, the light transmission window of the explosion-proof cover 27 may be embedded with a transparent light transmission plate 40 made of common explosion-proof plastic material, which together with the explosion-proof cover 27 can fully protect the visual camera 28 and the light source 29.

[0057] Specifically, if Figure 6 As shown, in this embodiment, the feeding device 4 includes a feeding device frame 30, a conveyor belt 31, and a conveyor belt drive motor 32. The feeding device frame 30 is fixedly connected to the main frame 1, and the conveyor belt 31 and the conveyor belt drive motor 32 are respectively arranged on the feeding device frame 30. The conveyor belt drive motor 32 is located at the lower side of the conveyor belt 31. The conveyor belt drive motor 32 is used to provide power to the conveyor belt 31. The conveyor belt 31 is located below one of the material output ends of the material distribution device 3, and one end of the conveyor belt 31 extends to the upper side of the upper opening of the collection funnel 7. In this embodiment, the conveyor belt 31 and the conveyor belt drive motor 32 are both commercially available products. The conveyor belt drive motor 32 is controlled by an external controller. The output end of the conveyor belt drive motor 32 can be connected to the conveyor belt 31 through a pulley and a synchronous belt structure to provide power. The conveyor belt 31 can quickly pour a relatively large amount of powdery material falling on the conveyor belt 31 from the discharge port of the material channel part 1900 of one of the material distribution chambers 19 into the collection funnel 7.

[0058] In this embodiment, a scraper plate 33 and a material receiving box 34 are also installed on the base frame 30 of the feeding device. The scraper plate 33 is located at the lower side of one end of the conveyor belt 31 close to the collecting funnel 7, and the material receiving box 34 is also located at the lower side of the conveyor belt 31. The scraper plate 33 can drop the powdery materials sticking on the conveyor belt 31 into the material receiving box 34 for recycling. A dust cover A 35 is installed on the outer frame of the conveyor belt 31 itself. In this embodiment, the discharge port of the material channel part 1900 of one of the material distribution chambers 19 can further pass through the dust cover A 35, which can effectively prevent the powdery materials from spilling when falling onto the conveyor belt 31.

[0059] Specifically, if Figure 7 As shown, in this embodiment, the feeding device 5 includes a feeding device base 36, a vibrator 37, and a receiving groove 38. The feeding device base 36 is fixed to the main frame 1, the shell of the vibrator 37 is installed on the feeding device base 36, and the receiving groove 38 is arranged on the vibration output end of the vibrator 37, and the receiving groove 38 is located below another material output end of the material distribution device 3. In this embodiment, the vibrator 37 adopts a commercially available product, and the action of the vibrator 37 is controlled by an external control system. The vibrator 37 drives the receiving groove 38 to vibrate, and a relatively small amount of powder falling into the receiving groove 38 from the discharge port of the material channel part 1900 of another material distribution chamber 19 is subjected to the vibration and quickly falls into the collecting funnel 7. A dust cover B 39 is installed on the outside of the receiving groove 38. In this embodiment, the discharge port of the material channel portion 1900 of another material distribution chamber 19 can further pass through the dust cover B 39, which can effectively prevent the powder from spilling when it falls into the receiving groove 38.

[0060] Working principle:

[0061] During operation, the cover-opening cylinder 14 contracts, opens the movable barrel cover 11, and pours the powder into the storage barrel 8. The cover-opening cylinder 14 extends and closes the movable barrel cover 11. The stirring motor 16 drives the stirring shaft 17 with the stirring paddle 18 to rotate and stir the powder in the storage barrel 8. The clamp valve 9 is controlled to open and pour the powder into the material distribution chamber 19. After the powder is poured into the material distribution chamber 19, it is divided into two material channels 1900. The two baffle driving cylinders 22 control the opening and closing of the rotating baffles 21 in the two material channels 1900 according to the instructions of the external control system, and pour the powder into the feeding device 4 and the feeding device 5 respectively. After the powder is poured into the feeding device 4, the conveyor belt driving motor 32 drives the conveyor belt 31 to feed the material quickly and in large quantities, and pours the powder into the container 001 on the detection end of the electronic balance 6 below through the collecting funnel 7. The electronic balance 6 monitors the weight of the powder in real time and feeds the result back to the system. If a small amount of material needs to be added to the container 001, the material adding device 5 can be controlled to operate. After the powder is poured into the receiving tank 38, the vibrator 61 vibrates, driving the powder in the receiving tank 38 to feed forward, and pours into the container 001 on the detection end of the electronic balance 6 below through the collecting funnel 7. By first using the conveyor belt 31 to feed a large amount of material, and then using vibration to add a small amount of material, the high-precision weighing requirements can be effectively and quickly met. After the powder in the container 001 reaches the specified weight, the feeding device 4 and the material adding device 5 are shut down respectively.

Claims

1. A fast and high-precision powder weighing device, characterized in that: The invention comprises a main frame (1), a material storage device (2), a material distribution device (3), a material feeding device (4), a material supplement device (5), an electronic balance (6), and a material collection hopper (7), wherein the material storage device (2), the material distribution device (3), the material feeding device (4), the material supplement device (5), the electronic balance (6), and the material collection hopper (7) are respectively arranged on the main frame (1); The detection end of the electronic balance (6) is used to place a container (001) for receiving powdery substances and to weigh the powdery substances in the container (001); The material collection funnel (7) is located above the electronic balance (6), and the material collection funnel (7) has two upper and lower openings, the upper opening of the material collection funnel (7) is larger than the lower opening of the material collection funnel (7), and the lower opening of the material collection funnel (7) is arranged at a position corresponding to the position of the detection end of the electronic balance (6); The material storage device (2) is located on the upper part of the main frame (1), and the material storage device (2) is used to temporarily store powdery materials input from the outside; The material distribution device (3) is located below the material storage device (2), and has a material receiving end and two material output ends. The material distribution device (3) is used to receive powder from the material storage device (2) and output the received powder to the feeding device (4) and the feeding device (5) respectively; The feeding device (4) is located below the material distribution device (3), and the feeding device (4) is used to feed a large amount of material to the upper opening of the collecting funnel (7); The feeding device (5) is located below the material distribution device (3), and the feeding device (5) is used to feed a small amount of material to the upper opening of the collecting funnel (7).

2. A powder fast and high-precision weighing device according to claim 1, characterized in that: The material storage device (2) comprises a material storage barrel (8), a pinch valve (9), a fixed barrel cover (10), a movable barrel cover (11), a pressure sensor (12), a vibrator A (13), a cover-opening cylinder (14), and a cover-opening cylinder mounting frame (15); The top of the material storage barrel (8) has an opening, and the top opening of the material storage barrel (8) is used to input powder from the outside of the material storage barrel (8) to the inside of the material storage barrel (8). The bottom of the material storage barrel (8) is provided with a discharge port. The pinch valve (9) is installed on the discharge port of the material storage barrel (8). The pinch valve (9) is connected to the material receiving end of the material distribution device (3). The movable barrel cover (11) and the fixed barrel cover (10) are connected by a joint. The fixed barrel cover (10) is fixedly connected to the material storage barrel (8), the movable barrel cover (11) and the fixed barrel cover (10) are used together to close the top opening of the material storage barrel (8), one end of the cover opening cylinder (14) is hinged to the movable barrel cover (11), and the other end of the cover opening cylinder (14) is hinged to the cover opening cylinder mounting frame (15), and the cover opening cylinder mounting frame (15) is fixedly connected to the main frame (1); A plurality of pressure sensors (12) are connected along the circumferential direction on the outer surface of the material storage barrel (8), and each of the pressure sensors (12) is fixedly connected to the main frame (1), respectively. The vibrator A (13) is also installed on the outer surface of the material storage barrel (8).

3. A powder fast and high-precision weighing device according to claim 2, characterized in that: The upper part of the main frame (1) is also equipped with a housing of a stirring motor (16); the output end of the stirring motor (16) is connected to the upper end of a stirring shaft (17); the lower end of the stirring shaft (17) passes through the fixed barrel cover (10) and extends to the interior of the storage barrel (8); and a stirring paddle (18) is installed at the lower end of the stirring shaft (17).

4. The fast and high-precision powder weighing device according to claim 1, characterized in that: The material distribution device (3) comprises a material distribution chamber (19), a material distribution chamber mounting frame (20), a rotating baffle (21), a baffle driving cylinder (22), and a driving connecting rod (23); The material distribution chamber (19) is installed on the main frame (1) through the material distribution chamber mounting frame (20), and a feed port is opened on the top of the material distribution chamber (19). The feed port of the material distribution chamber (19) serves as a material receiving end of the material distribution device (3). The bottom of the material distribution chamber (19) is divided into two material channel parts (1900), and the bottom of the material channel part (1900) of each of the material distribution chambers (19) is provided with a discharge port, and the discharge port of the material channel part (1900) of one of the material distribution chambers (19) is used as one of the material output ends of the material distribution device (3) in conjunction with the feeding device (4), and the discharge port of the material channel part (1900) of the other material distribution chamber (19) is used as another material output end of the material distribution device (3) in conjunction with the feeding device (5). A rotating baffle (21) is provided inside the material channel portion (1900) of the material distribution chamber (19), and each of the rotating baffles (21) has a rotating shaft portion. The rotating shaft portion of each rotating baffle (21) is rotatably connected to the corresponding material channel portion (1900) of the material distribution chamber (19), and the rotating shaft portion of each rotating baffle (21) extends to the outside of the material distribution chamber (19). Two baffle driving cylinders (22) are provided, and one end of each baffle driving cylinder (22) is hinged to the rear side surface of the material distribution chamber (19), and the other end of each baffle driving cylinder (22) is hinged to one end of a corresponding driving connecting rod (23), and the other end of each driving connecting rod (23) is hinged to the rotating shaft portion of a corresponding rotating baffle (21).

5. A powder fast and high-precision weighing device according to claim 4, characterized in that: A vibrator B (24) is provided on the outer side surface of the material distribution chamber (19).

6. A powder fast and high-precision weighing device according to claim 4, characterized in that: An observation port is provided on the material distribution chamber (19) at positions corresponding to the two material channel parts (1900) of the material distribution chamber (19); a transparent cover plate (25) for closing the observation port of the material distribution chamber (19) is provided on the material distribution chamber (19); a flameproof cover mounting frame (26) is installed on the main frame (1); a flameproof cover (27) is installed on the flameproof cover mounting frame (26); a visual camera (28) and a light source (29) are respectively installed inside the flameproof cover (27); a light passing window is provided on the flameproof cover (27); the light passing window of the flameproof cover (27) and the lens of the visual camera (28) are both directed toward the observation port of the material distribution chamber (19).

7. The fast and high-precision powder weighing device according to claim 1, characterized in that: The feeding device (4) comprises a feeding device frame (30), a conveyor belt (31), and a conveyor belt driving motor (32); the feeding device frame (30) is fixedly connected to the main frame (1); the conveyor belt (31) and the conveyor belt driving motor (32) are respectively arranged on the feeding device frame (30); the conveyor belt driving motor (32) is located at the lower side of the conveyor belt (31); the conveyor belt driving motor (32) is used to provide power to the conveyor belt (31); the conveyor belt (31) is located below one of the material output ends of the material distribution device (3); and one end of the conveyor belt (31) extends to above the upper opening of the collecting funnel (7).

8. The device for rapid and high-precision weighing of powder according to claim 7, characterized in that: A scraper plate (33) and a material receiving box (34) are also mounted on the feeding device base frame (30), the scraper plate (33) is located on the lower side of one end of the conveyor belt (31) close to the collecting hopper (7), the material receiving box (34) is also located on the lower side of the conveyor belt (31), and a dust cover A (35) is mounted on the outer frame of the conveyor belt (31).

9. The powder fast and high-precision weighing device according to claim 1, characterized in that: The feeding device (5) comprises a feeding device base (36), a vibrator (37), and a receiving groove (38); the feeding device base (36) is fixedly connected to the main frame (1); the outer shell of the vibrator (37) is installed on the feeding device base (36); the receiving groove (38) is arranged on the vibration output end of the vibrator (37); and the receiving groove (38) is located below another material output end of the dividing device (3).

10. A powder fast and high-precision weighing device according to claim 9, characterized in that: A dust cover B (39) is installed on the outer side of the receiving groove (38).

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