Dual hopper metering device

Abstract

The application relates to a double-hopper metering device and relates to the technical field of weighing equipment, which comprises a device main body, a mounting cavity is formed in the device main body, an accumulation hopper is fixedly installed in the mounting cavity of the device main body, a first feeding port is formed in the top of the accumulation hopper, a first discharging port is formed in the bottom of the accumulation hopper, the first feeding port is coaxially arranged with a connecting port, a weighing hopper is fixedly installed in the mounting cavity of the device main body, a second feeding port is formed in the top of the weighing hopper, a second discharging port is formed in the bottom of the weighing hopper, the second feeding port is coaxially arranged with the first discharging port, two groups of weighing assemblies are arranged, the two groups of weighing assemblies are arranged in the device main body from top to bottom, the two groups of weighing assemblies are connected with the accumulation hopper and the weighing hopper respectively, two groups of discharging assemblies are arranged, and the two groups of discharging assemblies are connected with the accumulation hopper and the weighing hopper respectively. The application has the effects of stabilizing the tobacco flow and improving the metering precision.

Description

Technical Field

[0001] This application relates to the technical field of weighing equipment, and in particular to a dual-hopper metering device. Background Technology

[0002] In the cigarette manufacturing production line, especially between the outlet of the tobacco storage cabinet and the cigarette making machine, the stable and precise control of tobacco flow rate is the core key to ensuring the uniformity of cigarette weight, reducing raw material consumption, and improving product quality.

[0003] Because tobacco shreds are lightweight, fluffy, and easily sticky, they are prone to getting stuck in mid-air during the tobacco shreds conveying process, leading to flow interruption. When too much tobacco shreds accumulate in mid-air, a large amount of tobacco shreds will rush out instantly, causing large fluctuations in the tobacco shreds flow rate. The tobacco shreds weighing system is unable to respond to such fluctuations quickly in an instant, which in turn leads to measurement deviations and affects subsequent processes. Summary of the Invention

[0004] In order to stabilize the tobacco flow rate and improve the metering accuracy of the dual-hopper metering device, this application provides a dual-hopper metering device.

[0005] This application provides a dual-hopper metering device, which adopts the following technical solution:

[0006] A dual-hopper metering device, comprising:

[0007] The device body has an installation cavity inside, a device end cap is provided on the top of the device body, a connection port is provided on the device end cap, and a material receiving port is provided at the bottom of the device body;

[0008] A material hopper is fixedly installed in the mounting cavity of the main body of the device. The top of the material hopper has a first inlet and the bottom of the material hopper has a first outlet. The first inlet is arranged opposite to the connection port.

[0009] A weighing hopper is fixedly installed in the mounting cavity of the main body of the device. The top of the weighing hopper has a second inlet and the bottom of the weighing hopper has a second outlet. The second inlet and the first outlet are arranged opposite to each other.

[0010] The weighing assembly is provided in two sets, and the two sets of weighing assemblies are respectively connected to the material accumulation hopper and the weighing hopper;

[0011] The feeding assembly includes two sets, each set connected to the accumulation hopper and the weighing hopper respectively. Each set of feeding assemblies includes:

[0012] A rotating component, which is mounted on the accumulating hopper or the weighing hopper;

[0013] The material stop includes:

[0014] Two fixed shafts are symmetrically mounted on the rotating component.

[0015] A reel, which is sleeved on and rotatably mounted on the fixed shaft;

[0016] A coil spring is sleeved on the fixed shaft, with one end of the coil spring fixedly connected to the fixed shaft and the other end of the coil spring fixedly connected to the drum.

[0017] A flexible plastic sheet, with its two ends respectively wound around the two rollers, is used to block the first discharge port or the second discharge port.

[0018] Optionally, the rotating member includes:

[0019] A rotary cylinder, which is fixedly mounted on the main body of the device;

[0020] Two connecting shafts are provided, and the two connecting shafts are symmetrically and fixedly installed on the material hopper or weighing hopper;

[0021] The rotating plate is provided in two, and the two rotating plates are rotatably mounted on the two connecting shafts in a one-to-one correspondence. One of the rotating plates is fixedly connected to the output end of the rotary cylinder, and the two fixed shafts are symmetrically and fixedly mounted between the two rotating plates.

[0022] Optionally, the feeding assembly further includes a blanking component, the blanking component comprising:

[0023] Two sets of fixing blocks, each set of fixing blocks includes two blocks, the two fixing blocks are symmetrical and fixedly installed on the rotating plate;

[0024] A spring is fixedly mounted on two fixed blocks at both ends. The spring can abut against the flexible plastic plate and push the flexible plastic plate to form a curved surface.

[0025] Optionally, the unloading assembly further includes a driving component, the driving component comprising:

[0026] A guide wheel is sleeved on and fixedly connected to the connecting shaft, and a guide groove is provided on the guide wheel;

[0027] A push rod is slidably mounted on the rotating plate, with one end of the push rod abutting against the guide wheel and the other end of the push rod abutting against the spring sheet.

[0028] Optionally, the drive unit further includes:

[0029] A sleeve is fixedly mounted on the rotating plate, and the push rod passes through and is slidably mounted inside the sleeve.

[0030] A return spring is sleeved on the top rod, with one end of the return spring fixedly connected to the sleeve and the other end of the return spring fixedly connected to the top rod.

[0031] Optionally, a pull rope is fixedly connected to the middle section of the spring, and the end of the pull rope away from the spring is fixedly connected to the top rod.

[0032] Optionally, a positioning groove is provided on the rotating plate, and a limit groove is provided on the guide wheel;

[0033] A positioning component is provided on the guide wheel, and the positioning component includes:

[0034] A positioning block, wherein the positioning block is inserted and slidably installed in the limiting groove, and one end of the positioning block can be embedded in the positioning groove;

[0035] A positioning spring is provided in the limiting groove. One end of the positioning spring is fixedly connected to the positioning block, and the other end of the positioning spring is fixedly connected to the wall of the limiting groove.

[0036] Optionally, both sets of the weighing components include:

[0037] A fixing plate, wherein there are no fewer than two fixing plates, and the fixing plates are fixedly installed on the material hopper or the weighing hopper;

[0038] A screw, which passes through and is rotatably mounted on the fixed plate;

[0039] A weighing sensor, one end of which is fixedly connected to the main body of the device, and the other end of which is sleeved and threaded onto the screw rod, with multiple weighing sensors located on the same horizontal plane.

[0040] Optionally, the connection port has the same shape as the first feed port, and the area of ​​the connection port is smaller than the area of ​​the first feed port.

[0041] Optionally, an electric control console is fixedly installed on the main body of the device, and a controller is provided on the electric control console. The weighing sensor and the rotary cylinder are both electrically connected to the controller.

[0042] In summary, this application includes at least one of the following beneficial technical effects:

[0043] 1. When using the dual-hopper metering device, the processed tobacco is poured into the accumulation hopper through the connection port and stored. The weighing component continuously weighs the tobacco in the accumulation hopper until the weight reaches the preset weight. At this point, the controller activates the discharging component, which opens the accumulation hopper, allowing the tobacco to enter the weighing hopper. The discharging component then closes the accumulation hopper. Simultaneously, the weighing component weighs the tobacco in the weighing hopper. After weighing, the discharging component opens the weighing hopper to empty the tobacco, completing the weighing process. By using both the accumulation hopper and the weighing hopper for quantitative weighing, the tobacco flow rate is stabilized, improving metering accuracy.

[0044] 2. At the moment the spring separates from the flexible plastic plate, the drum rotates under the action of the coiling spring, and the flexible plastic plate is quickly straightened, making the flexible plastic plate flat. The flexible plastic plate generates elasticity on the tobacco attached to the surface, causing the tobacco to separate from the flexible plastic plate, avoiding some tobacco sticking to the flexible plastic plate, which would cause the actual weight of the tobacco to be inconsistent with the weighed weight, thus improving the metering accuracy of the dual hopper metering device.

[0045] 3. When it is necessary to close the first or second discharge port again, the controller stops the rotary cylinder, releases air, and the rotating plate falls back under gravity. The push rod slides out from the bottom of the guide groove. At the same time, the push rod moves towards the spring plate under the action of the guide plate. When the push rod has completely slid out of the guide groove, it pushes the originally upward-protruding spring plate downward-protruding. The protruding spring plate then abuts against the flexible plastic plate and presses the flexible plastic plate into a curved state so that the flexible plastic plate can block the first or second discharge port. This avoids the flexible plastic plate, which is still in a taut state, from abutting and rubbing against the first or second discharge port during rotation, which would damage the flexible plastic plate and reduce its service life. Attached Figure Description

[0046] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0047] Figure 2 This is a structural diagram used to illustrate the material receiving port;

[0048] Figure 3 This is a structural diagram used to display the internal structure of the main body of the device;

[0049] Figure 4 This is a schematic diagram used to illustrate the structure of a rotary cylinder;

[0050] Figure 5 This is a schematic diagram used to illustrate the structure of a weighing hopper;

[0051] Figure 6 This is a schematic diagram used to illustrate the structure of the material hopper;

[0052] Figure 7 This is a structural diagram used to illustrate the guide wheel;

[0053] Figure 8 yes Figure 6 Enlarged view of point B;

[0054] Figure 9 yes Figure 5 Enlarged view of point A.

[0055] Explanation of reference numerals in the attached figures:

[0056] 1. Main body of the device; 11. End cap of the device; 12. Connection port; 13. Material receiving port;

[0057] 2. Material hopper; 21. First feed inlet; 22. First discharge outlet;

[0058] 3. Weighing hopper; 31. Second feed inlet; 32. Second discharge outlet;

[0059] 4. Weighing assembly; 41. Fixing plate; 42. Screw; 43. Weighing sensor;

[0060] 5. Feeding assembly; 51. Rotating component; 511. Rotary cylinder; 512. Connecting shaft; 513. Rotating plate; 5131. Positioning groove; 52. Stopping component; 521. Fixed shaft; 522. Drum; 523. Coil spring; 524. Flexible plastic sheet; 53. Unloading component; 531. Fixing block; 532. Spring; 54. Driving component; 541. Guide wheel; 5411. Guide groove; 5412. Limiting groove; 542. Push rod; 543. Sleeve; 544. Return spring; 545. Pull rope;

[0061] 6. Positioning component; 61. Positioning block; 62. Positioning spring;

[0062] 7. Electrical control console. Detailed Implementation

[0063] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0064] This application discloses a dual-hopper metering device.

[0065] A dual-hopper metering device includes a main body 1, a material hopper 2, a weighing hopper 3, a weighing component 4, and a feeding component 5.

[0066] The main body 1 of the device has an installation cavity, in which the material hopper 2, weighing hopper 3, weighing component 4, and discharging component 5 are all installed. The top of the main body 1 is covered with a device end cover 11, which has a connection port 12. The bottom of the main body 1 has a material receiving port 13. An electric control console 7 is fixedly installed on the main body 1. The electric control console 7 is equipped with a controller, and the weighing component 4 and the discharging component 5 are electrically connected to the controller.

[0067] The material hopper 2 is fixedly installed inside the main body 1 of the device. The top of the material hopper 2 has a first inlet 21, and the bottom has a first outlet 22. The first inlet 21 and the connecting port 12 are coaxially arranged. The connecting port 12 has the same shape as the first inlet 21, but its area is smaller than that of the first inlet 21, so that the tobacco can completely enter the material hopper 2 from the connecting port 12. The weighing hopper 3 is fixedly installed inside the main body 1 of the device, located below the material hopper 2. The top of the weighing hopper 3 has a second inlet 31, and the bottom has a second outlet 32. The second inlet 31 and the first outlet 22 are coaxially arranged. Both the first outlet 22 and the second outlet 32 ​​are funnel-shaped.

[0068] Two sets of weighing components 4 are provided, which are respectively installed on the material collection hopper 2 and the weighing hopper 3. The weighing components 4 are used to weigh the tobacco shreds in the material collection hopper 2 and the weighing hopper 3. Two sets of discharging components 5 are provided, which are respectively connected to the material collection hopper 2 and the weighing hopper 3. The discharging components 5 can open or close the material collection hopper 2 and the weighing hopper 3.

[0069] When using the dual-hopper metering device, the processed tobacco is poured into the accumulation hopper 2 through the connection port 12 and stored. The weighing component 4 continuously weighs the tobacco in the accumulation hopper 2 until the weight of the tobacco in the accumulation hopper 2 reaches the preset weight. At this point, the controller controls the discharging component 5 to operate, and the discharging component 5 opens the accumulation hopper 2, allowing the tobacco in the accumulation hopper 2 to enter the weighing hopper 3. Then, the discharging component 5 closes the accumulation hopper 2. Simultaneously, the weighing component 4 weighs the tobacco in the weighing hopper 3. After weighing, the discharging component 5 opens the weighing hopper 3 and pours out the tobacco, completing the weighing of the tobacco. By quantitatively weighing the tobacco through the accumulation hopper 2 and the weighing hopper 3, the tobacco flow rate is stabilized, improving metering accuracy.

[0070] Both sets of weighing components 4 include a fixed plate 41, a screw 42, and a weighing sensor 43.

[0071] There are three fixing plates 41, which are fixedly installed on the material hopper 2 or the weighing hopper 3. A screw 42 passes through and is rotatably mounted on the fixing plates 41. One end of a weighing sensor 43 is fixedly connected to the main body 1 of the device, and the other end of the weighing sensor 43 is sleeved and threaded onto the screw 42. The weighing sensor 43 is electrically connected to the controller. All three weighing sensors 43 are located on the same horizontal plane, and the weight of the material hopper 2 or the weighing hopper 3 is evenly distributed across the three weighing sensors 43.

[0072] After the tobacco shreds enter the collection hopper 2 or weighing hopper 3, the weighing sensor 43 weighs the tobacco shreds in the collection hopper 2 or weighing hopper 3. Multiple weighing sensors 43 work together to weigh the collection hopper 2 or weighing hopper 3, avoiding uneven distribution of tobacco shreds in the collection hopper 2 or weighing hopper 3, which could lead to inaccurate weighing and improve the weighing accuracy of the weighing component 4.

[0073] Each feeding assembly 5 includes a rotating component 51 and a retaining component 52 connected to the rotating component 51. The rotating component 51 is installed on the material hopper 2 or the weighing hopper 3.

[0074] The rotating component 51 includes a rotary cylinder 511, a connecting shaft 512, and a rotating plate 513. The fixed end of the rotary cylinder 511 is fixedly installed on the main body 1 of the device. There are two connecting shafts 512, which are symmetrically and fixedly installed on the material hopper 2 or the weighing hopper 3. There are two rotating plates 513, which are rotatably installed on the two connecting shafts 512 in a one-to-one correspondence. One of the rotating plates 513 is fixedly connected to the output end of the rotary cylinder 511. The baffle 52 is provided on the two rotating plates 513, and the end faces of the two rotating plates 513 that are close to each other are provided with positioning grooves 5131.

[0075] The material stop 52 includes a fixed shaft 521, a drum 522, a coil spring 523, and a flexible plastic plate 524.

[0076] Two fixed shafts 521 are provided, symmetrically and fixedly installed between two rotating plates 513. A drum 522 is coaxially sleeved and rotatably mounted on the fixed shafts 521. A coil spring 523 is sleeved on the fixed shafts 521, with one end fixedly connected to the fixed shaft 521 and the other end fixedly connected to the drum 522. A flexible plastic plate 524 is wound around the two drums 522 at both ends, with its end fixedly connected to the drum 522. The flexible plastic plate 524 is used to block the first discharge port 22 or the second discharge port 32, and its two sides are tightly fitted to the two rotating plates 513. The two coil springs 523 constantly drive the two drums 522 to rotate in opposite directions, keeping the flexible plastic plate 524 taut.

[0077] The feeding assembly 5 also includes a blanking component 53, which includes a fixing block 531 and a spring 532.

[0078] Two sets of fixing blocks 531 are provided, each set of fixing blocks 531 includes two blocks. The two fixing blocks 531 are symmetrical and fixedly installed on the rotating plate 513. The spring 532 is arc-shaped, and its two ends are fixedly installed on the two fixing blocks 531. The spring 532 can abut against the flexible plastic plate 524. The spring 532 can push the flexible plastic plate 524 into a curved surface. When the flexible plastic plate 524 is curved, there is a narrow gap between it and the bottom of the material hopper 2 or the heavy hopper 3, so as to avoid friction between the rotating part 51 and the bottom of the material hopper 2 or the heavy hopper 3 during the rotation of the flexible plastic plate 524.

[0079] When the weighing component 4 detects that the weight of the tobacco in the hopper 2 or the weighing hopper 3 has reached the required level and needs to be discharged, the weighing component 4 transmits a signal to the controller. The controller controls the rotary cylinder 511 to work. The output end of the rotary cylinder 511 drives the flexible plastic plate 524 to rotate around the connecting shaft 512 through the rotating plate 513, so that the first discharge port 22 or the second discharge port 32 is opened so that the tobacco in the hopper 2 or the weighing hopper 3 can be discharged.

[0080] When the flexible plastic plate 524 is rotated to an inclined state, the tobacco shreds attached to the flexible plastic plate 524 fall off under the action of gravity, avoiding some tobacco shreds from being attached to the flexible plastic plate 524, which would cause the actual weight of the tobacco shreds to not match the weighed weight, thus improving the metering accuracy of the dual hopper metering device.

[0081] By using a rotary cylinder 511 to drive the flexible plastic plate 524 to rotate, the mechanical sensitivity and response speed of the dual-hopper metering device are improved. At the same time, it avoids repetitive forward and reverse rotation of the rotating plate 513 due to excessively high feeding frequency, reducing the risk of damage to the internal structure of the dual-hopper metering device and extending its service life.

[0082] After the material feeding is completed, the controller stops the rotary cylinder 511 and releases air. Under the action of gravity, the rotating plate 513 falls back, causing the flexible plastic plate 524 to block and close the first discharge port 22 or the second discharge port 32 again, so as to weigh the tobacco in the accumulating hopper 2 or the weighing hopper 3.

[0083] The feeding assembly 5 also includes a drive component 54, which includes a guide wheel 541, a push rod 542, a sleeve 543, and a return spring 544.

[0084] The guide wheel 541 is a cylindrical plate, which is sleeved and fixedly connected to the connecting shaft 512. The guide wheel 541 has a guide groove 5411, which is concave towards the center of the guide wheel 541 and is arc-shaped. The guide wheel 541 has a limit groove 5412 on the side of the guide wheel 541 near the rotating plate 513. The push rod 542 is slidably mounted on the rotating plate 513. One end of the push rod 542 abuts against the guide wheel 541, and the other end of the push rod 542 abuts against the spring 532. A pull rope 545 is fixedly connected to the middle section of the spring 532. The end of the pull rope 545 away from the spring 532 is fixedly connected to the push rod 542.

[0085] In this embodiment, the sleeve 543 is further fixedly mounted on the rotating plate 513, the push rod 542 passes through and slides inside the sleeve 543, the return spring 544 is sleeved on the push rod 542, one end of the return spring 544 is fixedly connected to the sleeve 543, and the other end of the return spring 544 is fixedly connected to the push rod 542. The return spring 544 always applies a force to the push rod 542 in the direction close to the guide wheel 541.

[0086] When the first discharge port 22 or the second discharge port 32 is closed, the push rod 542 abuts against the guide wheel 541, the push rod 542 extends towards the spring 532 and pushes the spring 532, causing the spring 532 to bulge downward, the spring 532 abuts against the flexible plastic plate 524 and presses the flexible plastic plate 524 into a curved state.

[0087] When the first discharge port 22 or the second discharge port 32 needs to be opened, the rotary cylinder 511 works and drives the rotating plate 513 to rotate. While the rotating plate 513 is rotating, it drives the push rod 542 to rotate. The push rod 542 rotates towards the guide groove 5411. When the top of the push rod 542 is about to slide into the guide groove 5411, the first discharge port 22 or the second discharge port 32 is fully opened.

[0088] After the top of the push rod 542 slides into the guide groove 5411, the push rod 542 moves away from the spring 532 under the action of the return spring 544. When the push rod 542 just enters the guide groove 5411, the pull rope 545 is in a slack state. As the push rod 542 gradually approaches the bottom of the guide groove 5411, the pull rope 545 tauts. Then the push rod 542 continues to move towards the bottom of the guide groove 5411. The push rod 542 pulls the spring 532 through the pull rope 545, causing the spring 532 to deform rapidly and bulge upward, and the spring 532 disengages from the flexible plastic plate 524.

[0089] The moment the reed 532 separates from the flexible plastic plate 524, the coil spring 523 drives the drum 522 to rotate and quickly straightens the flexible plastic plate 524, making it flat. The flexible plastic plate 524 applies elastic force to the tobacco attached to its surface, causing the tobacco to separate from the flexible plastic plate 524. This prevents some tobacco from sticking to the flexible plastic plate 524, which would cause the actual weight of the tobacco to be inconsistent with the weighed weight, thus improving the metering accuracy of the dual hopper metering device.

[0090] Driven by the rotary cylinder 511, the flexible plastic plate 524 is rotated to an inclined state and stretched to ensure that the end of the flexible plastic plate 524 is in an inclined state so that the tobacco shreds fall off the flexible plastic plate 524 under the action of gravity.

[0091] When it is necessary to close the first discharge port 22 or the second discharge port 32 again, the controller controls the rotary cylinder 511 to stop working, the rotary cylinder 511 releases air, and the rotating plate 513 falls back under the action of gravity. The weight of the rotating plate 513 is large enough to ensure that the push rod 542 can overcome the elastic force of the spring 532 and the return spring 544. The push rod 542 slides out from the bottom of the guide groove 5411. At the same time, the push rod 542 moves towards the spring 532 under the action of the guide wheel 541. When the push rod 542 slides out completely from the guide groove 5411, the push rod 542 pushes the originally upward protruding spring 532 to protrude downward. The protruding spring 532 then abuts against the flexible plastic plate 524 and presses the flexible plastic plate 524 into a curved state so that the flexible plastic plate 524 can block the first discharge port 22 or the second discharge port 32.

[0092] The flexible plastic sheet 524 is pressed into a curved state so that the rotating plate 513 can close the first discharge port 22 or the second discharge port 32 during the fall process. At the same time, it prevents the flexible plastic sheet 524, which is still in a straight state, from abutting and rubbing against the first discharge port 22 or the second discharge port 32 during the fall process, thereby protecting the surface of the flexible plastic sheet 524 and extending the service life of the flexible plastic sheet 524.

[0093] The guide wheel 541 is provided with a positioning component 6, which includes a positioning block 61 and a positioning spring 62.

[0094] The positioning block 61 is inserted and slidably installed in the limiting groove 5412. One end of the positioning block 61 can be embedded in the positioning groove 5131. The positioning spring 62 is set in the limiting groove 5412. One end of the positioning spring 62 is fixedly connected to the positioning block 61, and the other end of the positioning spring 62 is fixedly connected to the groove wall of the limiting groove 5412. The positioning spring 62 always applies a force to the positioning block 61 in a direction away from the guide wheel 541.

[0095] After the material unloading is completed, the controller stops the rotary cylinder 511 and releases air. Under the action of gravity, the rotating plate 513 falls back. During the fall of the rotating plate 513, the positioning groove 5131 moves towards the positioning block 61. When the positioning groove 5131 and the positioning block 61 are coaxial, the positioning block 61 is embedded in the positioning groove 5131 under the action of the positioning spring 62, thereby fixing the rotating plate 513 and preventing the rotating plate 513 from swinging back and forth when it falls back under the action of inertia, which would prevent the flexible plastic plate 524 from quickly closing the first discharge port 22 or the second discharge port 32.

[0096] The implementation principle of the dual-hopper metering device in this application embodiment is as follows: When using the dual-hopper metering device, the processed tobacco is poured into the accumulation hopper 2 through the connection port 12 and accumulated. The weighing component 4 continuously weighs the tobacco in the accumulation hopper 2 until the weight of the tobacco in the accumulation hopper 2 reaches the preset weight. At this time, the controller controls the feeding component 5 to work. The feeding component 5 opens the accumulation hopper 2, and the tobacco in the accumulation hopper 2 enters the weighing hopper 3. Then, the feeding component 5 closes the accumulation hopper 2. At the same time, the weighing component 4 weighs the tobacco in the weighing hopper 3. After the weighing is completed, the feeding component 5 opens the weighing hopper 3 and pours out the tobacco in the weighing hopper 3, completing the weighing of the tobacco.

[0097] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dual-hopper metering device, characterized in that, include: The device body (1) has an installation cavity inside, and the device body (1) is covered with a device end cap (11) on the top. The device end cap (11) has a connection port (12) on it, and the device body (1) has a material receiving port (13) at the bottom. The material hopper (2) is fixedly installed in the mounting cavity of the main body (1) of the device. The top of the material hopper (2) is provided with a first inlet (21) and the bottom of the material hopper (2) is provided with a first outlet (22). The first inlet (21) is arranged opposite to the connection port (12). Weighing hopper (3) is fixedly installed in the mounting cavity of the main body (1) of the device. The top of the weighing hopper (3) is provided with a second inlet (31) and the bottom of the weighing hopper (3) is provided with a second outlet (32). The second inlet (31) is arranged opposite to the first outlet (22). Weighing assembly (4), the weighing assembly (4) is provided in two sets, the two sets of weighing assemblies (4) are respectively connected to the material hopper (2) and the weighing hopper (3); The feeding assembly (5) is provided in two sets, and the two sets of feeding assemblies (5) are respectively connected to the material hopper (2) and the weighing hopper (3). Each set of feeding assemblies (5) includes: Rotating component (51), the rotating component (51) is mounted on the material hopper (2) or the weighing hopper (3); The material stop (52) includes: Fixed shafts (521), two of the fixed shafts (521) are symmetrically mounted on the rotating member (51); A reel (522) is sleeved on and rotatably mounted on the fixed shaft (521); A coil spring (523) is sleeved on the fixed shaft (521). One end of the coil spring (523) is fixedly connected to the fixed shaft (521), and the other end of the coil spring (523) is fixedly connected to the drum (522). A flexible plastic sheet (524) is wound around the two rollers (522) at both ends. The flexible plastic sheet (524) is used to block the first discharge port (22) or the second discharge port (32).

2. The dual-hopper metering device according to claim 1, characterized in that, The rotating component (51) includes: A rotary cylinder (511) is fixedly mounted on the main body (1) of the device; Connecting shaft (512), two connecting shafts (512) are provided, and the two connecting shafts (512) are symmetrically and fixedly installed on the material hopper (2) or weighing hopper (3); Rotating plate (513), two rotating plates (513) are provided, and the two rotating plates (513) are rotatably mounted on the two connecting shafts (512) in a one-to-one correspondence. One of the rotating plates (513) is fixedly connected to the output end of the rotary cylinder (511), and the two fixed shafts (521) are symmetrically and fixedly mounted between the two rotating plates (513).

3. The dual-hopper metering device according to claim 2, characterized in that, The feeding assembly (5) further includes a blanking component (53), which includes: Two sets of fixing blocks (531), each set of fixing blocks (531) includes two, the two fixing blocks (531) are symmetrical and fixedly installed on the rotating plate (513); A spring (532) is fixedly mounted on two fixed blocks (531) at both ends. The spring (532) can abut against the flexible plastic plate (524) and push the flexible plastic plate (524) to be curved.

4. The dual-hopper metering device according to claim 3, characterized in that, The feeding assembly (5) further includes a driving component (54), the driving component (54) comprising: Guide wheel (541), the guide wheel (541) is sleeved and fixedly connected to the connecting shaft (512), and the guide wheel (541) is provided with a guide groove (5411). The push rod (542) is slidably mounted on the rotating plate (513). One end of the push rod (542) abuts against the guide wheel (541), and the other end of the push rod (542) abuts against the spring (532).

5. A dual-hopper metering device according to claim 4, characterized in that, The drive unit (54) also includes: A sleeve (543) is fixedly installed on the rotating plate (513), and a push rod (542) is inserted through and slidably installed inside the sleeve (543); A reset spring (544) is sleeved on the top rod (542). One end of the reset spring (544) is fixedly connected to the sleeve (543), and the other end of the reset spring (544) is fixedly connected to the top rod (542).

6. The dual-hopper metering device according to claim 5, characterized in that, A pull rope (545) is fixedly connected to the middle section of the spring (532), and the end of the pull rope (545) away from the spring (532) is fixedly connected to the top rod (542).

7. The dual-hopper metering device according to claim 4, characterized in that, The rotating plate (513) is provided with a positioning groove (5131), and the guide wheel (541) is provided with a limiting groove (5412). A positioning component (6) is provided on the guide wheel (541), the positioning component (6) comprising: A positioning block (61) is inserted through and slidably installed in the limiting groove (5412), and one end of the positioning block (61) can be embedded in the positioning groove (5131). A positioning spring (62) is provided in the limiting groove (5412). One end of the positioning spring (62) is fixedly connected to the positioning block (61), and the other end of the positioning spring (62) is fixedly connected to the groove wall of the limiting groove (5412).

8. A dual-hopper metering device according to claim 2, characterized in that, Both sets of weighing components (4) include: Fixed plate (41), the number of fixed plates (41) is not less than two, and the fixed plate (41) is fixedly installed on the material hopper (2) or the weighing hopper (3); A screw (42) is inserted through and rotatably mounted on the fixed plate (41); Weighing sensor (43), one end of which is fixedly connected to the main body (1) of the device, and the other end of which is sleeved and threaded onto the screw (42). Multiple weighing sensors (43) are located on the same horizontal plane.

9. A dual-hopper metering device according to claim 1, characterized in that, The connection port (12) has the same shape as the first feed port (21), and the area of ​​the connection port (12) is smaller than the area of ​​the first feed port (21).

10. A dual-hopper metering device according to claim 8, characterized in that, An electric control console (7) is fixedly installed on the main body (1) of the device. A controller is provided on the electric control console (7). The weighing sensor (43) and the rotary cylinder (511) are both electrically connected to the controller.

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