Double-sub-seat high-precision weightlessness scale structure

Abstract

The utility model belongs to the technical field of weighing metering equipment, and relates to a double-sub-seat high-precision weightlessness scale structure, which comprises a base, the base is provided with two groups of weightlessness scales, and the tops of the two groups of weightlessness scales are respectively provided with a feed port; each group of weightlessness scale comprises a weighing sensor, a scale body bottom plate, a feeding machine and a hopper, the weighing sensor is mounted on the base, the scale body bottom plate is mounted on the weighing sensor, the feeding machine and the hopper are mounted on the scale body bottom plate, and the discharging end of the hopper is communicated with the feeding end of the feeding machine through a first flexible connector; the discharging ends of the two feeders are communicated with the feeding end of the material collecting device through second flexible connectors respectively, and the material collecting device is fixedly connected to the base. The weightlessness scale structure can avoid the influence of feeding on precision.

Description

Technical Field

[0001] The utility model belongs to the technical field of weighing and metering equipment, and relates to a Gemini high-precision loss-in-weight weigher structure. Background Art

[0002] During the feeding process of the loss-in-weight weigher hopper, the system will monitor in real time whether the material reaches the preset feeding position. Once it reaches, the system will automatically stop the feeding process. After the loss-in-weight weigher is started, it will switch to the weight feedback mode for operation. In this mode, the system will continuously collect the weight data of the weighing sensor and transmit it to the weighing controller for processing. After calculation by the algorithm, the controller accurately regulates the feeding amount of the feeder to ensure accurate metering. During the operation of the loss-in-weight weigher, the amount of material in the hopper will gradually decrease. When the amount of material drops to the set replenishment threshold, the replenishment device will automatically start feeding. At this time, the loss-in-weight weigher will switch to the volume mode for operation. In this mode, the material filling rate of the feeder has a greater impact on the metering accuracy and is difficult to control, which will lead to a decrease in the metering accuracy as the replenishment time prolongs. After the replenishment is completed, the loss-in-weight weigher will switch back to the weight feedback mode and continue to accurately control the feeding process of the material. The system will loop through the above steps until the entire metering process is completed. The main disadvantage of the traditional loss-in-weight weigher is that the feeding has a greater impact on the metering accuracy during the operation process. Summary of the Invention

[0003] Aiming at the above problems, the utility model provides a Gemini high-precision loss-in-weight weigher structure, which can avoid the influence of feeding on the accuracy.

[0004] According to the technical solution of the utility model: a Gemini high-precision loss-in-weight weigher structure is characterized in that: it includes a base, and two sets of loss-in-weight weighers are arranged on the base, and feeding ports are respectively arranged at the tops of the two sets of loss-in-weight weighers;

[0005] Each set of loss-in-weight weigher includes a weighing sensor, a weighing body bottom plate, a feeder, and a hopper. Among them, the weighing sensor is installed on the base, the weighing body bottom plate is installed on the weighing sensor, the feeder and the hopper are installed on the weighing body bottom plate, and the discharge end of the hopper is connected to the feed end of the feeder through a first flexible connection;

[0006] The discharge ends of the two feeders are respectively connected to the feed end of the material collecting device through a second flexible connection, and the material collecting device is fixedly connected to the base.

[0007] As a further improvement of the utility model, a three-way distributor is arranged in cooperation above the two sets of loss-in-weight weighers. The two outlets of the three-way distributor are respectively connected to the top feeding ports of the two sets of loss-in-weight weighers through flexible connections, and the other port of the three-way distributor is the inlet;

[0008] The three-way distributor is provided with an outlet adjusting component to adjust the on-off of the two inlets and outlets.

[0009] As a further improvement of the present utility model, the adjusting component includes a first air cylinder, a first swing arm, a first valve and a first valve shaft. The first air cylinder is installed on the housing of the three-way distributor. The piston rod end of the first air cylinder is hinged to one end of the swing arm. The other end of the first swing arm is fixedly connected to the first valve shaft. The first valve is fixedly connected to the first valve shaft and rotates driven by the first valve shaft to realize the on-off adjustment of the two inlets and outlets of the three-way distributor.

[0010] As a further improvement of the present utility model, the base is supported by leveling feet.

[0011] As a further improvement of the present utility model, the ear plate on the outer side wall of the hopper is connected to the connecting bolts fixed at the top of the hopper support.

[0012] As a further improvement of the present utility model, a weighing body bottom plate is arranged at the top of the weighing sensor, and the feeder is installed on the weighing body bottom plate.

[0013] As a further improvement of the present utility model, each hopper is supported by two hopper supports respectively. The lower ends of the hopper supports are fixed on the weighing body bottom plate. At least two vertically extending screw rods are fixed at the upper ends of the hopper supports. The ear plate on the side of the hopper is connected with the screw rods in a matching manner to realize the support and fixation of the hopper.

[0014] As a further improvement of the present utility model, an exhaust filter element is arranged in cooperation with the hopper, and the exhaust filter element is communicated with the inner cavity of the hopper.

[0015] As a further improvement of the present utility model, a flow-aid device is also installed on the side of the hopper.

[0016] The technical effect of the present utility model is as follows: The Gemini high-precision loss-in-weight scale technology is mainly reflected in the following aspects, making the measurement more accurate and efficient:

[0017] Continuous weighing sensor feedback mode: Compared with the volume mode commonly used during feeding in the continuous measurement process of traditional loss-in-weight scales, the Gemini high-precision loss-in-weight scale uses the weighing sensor feedback mode throughout the process, avoiding the accuracy problems caused by the extended feeding time in the volume mode. This method ensures the data continuity and accuracy during the entire measurement process.

[0018] No influence of the volume mode: The new technology completely abandons the traditional volume mode, so it is not affected by the feeding duration and the impact during the feeding process, which will significantly affect the accuracy in the volume mode. By continuously monitoring the material weight, the system can adjust in real time to ensure highly accurate output.

[0019] Flexible dual-scale operation: In the batch weighing mode, two loss-in-weight scales can process the same or different materials simultaneously, which not only enhances the flexibility of the system but also significantly improves production efficiency. This technology allows the two scales to operate independently or alternately replenish materials to maintain continuous feeding without interfering with each other.

[0020] Improve weighing efficiency and accuracy: The technology of the new loss-in-weight scale greatly improves the weighing speed and accuracy through optimized algorithms and hardware designs. The fast response ability and high-precision output of the system ensure stability and reliability during the production process.

[0021] These technical improvements not only enhance the weighing accuracy but also strengthen the continuity and efficiency of production. Brief Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the present utility model.

[0023] Figure 2 is Figure 1 the left view of

[0024] Figure 3 is Figure 1 the rear view of

[0025] Figure 4 is Figure 1 the top view of Detailed Embodiment

[0026] The following further describes the detailed embodiment of the present utility model in conjunction with the drawings.

[0027] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Figures 1-4 It includes a base 1, a weighing sensor 2, a scale body bottom plate 3, a feeder 4, a feeding pipe 4-1, a second cylinder 4-2, a hopper support 5, a first flexible connection 6, a hopper 7, a feed inlet 8, a three-way distributor 9, a first cylinder 9-1, a first swing arm 9-2, a first valve shaft 9-3, an exhaust filter element 10, a second flexible connection 11, a material collecting device 12, a flow-aiding device 13, etc.

[0029] Such as Figures 1-4As shown in the figure, the utility model is a Gemini high-precision loss-in-weight weigher structure, including a base 1. Two loss-in-weight weighers are arranged on the base 1, and feeding ports are respectively arranged at the tops of the two loss-in-weight weighers.

[0030] Each loss-in-weight weigher includes a weighing sensor 2, a weigher body bottom plate 3, a feeder 4, and a hopper 7. The weighing sensor 2 is installed on the base 1, the weigher body bottom plate 3 is installed on the weighing sensor 2, the feeder 4 and the hopper 7 are installed on the weigher body bottom plate 3, and the discharge end of the hopper 7 is connected to the feed end of the feeder 4 through a first flexible connection 6. The reliable sealing of the connection part is achieved through the first flexible connection 6.

[0031] The discharge ends of the two feeders 4 are respectively connected to the feed ends of a material collecting device 12 through a second flexible connection 11, and the material collecting device 12 is fixedly connected to the base 1.

[0032] A three-way diverter 9 is arranged in cooperation above the two loss-in-weight weighers. The two outlets of the three-way diverter 9 are respectively connected to the top feeding ports of the two loss-in-weight weighers through flexible connections, and the other port of the three-way diverter 9 is the inlet.

[0033] The three-way diverter 9 is provided with an outlet adjusting component to adjust the on-off of the two inlets and outlets.

[0034] The adjusting component includes a first cylinder 9-1, a first swing arm 9-2, a first valve and a first valve shaft 9-3. The first cylinder 9-1 is installed on the shell of the three-way diverter 9. The piston rod end of the first cylinder 9-1 is hinged to one end of the first swing arm 9-2. The other end of the first swing arm 9-2 is fixedly connected to the first valve shaft 9-3. The first valve is fixedly connected to the first valve shaft 9-3 and rotates driven by the first valve shaft 9-3 to realize the on-off adjustment of the two inlets and outlets of the three-way diverter 9.

[0035] The base 1 is supported by leveling feet, and the leveling feet respectively arranged at the four corners of the base 1 can be adjusted according to the flatness of the site during use to ensure that the base 1 is in a horizontal state.

[0036] The ear plate on the outer side wall of the hopper 7 is connected to the connecting bolts fixed at the top of the hopper support 5.

[0037] The weighing sensor 2 is provided with a weighing body bottom plate 3 at the top, and the feeder 4 and the hopper 7 are installed on the weighing body bottom plate 3. In this application, the feeder 4 adopts the solution disclosed in the Chinese patent with the patent number 202323139026.8. A feeding pipe 4-1 is connected to the vibration output end of the small electromagnetic feeder. One end of the feeding pipe 4-1 is connected to the discharging end of the hopper 7 through a first flexible connection 6, and the other end of the feeding pipe 4-1 is connected to the feeding end of the material collecting device 12 through a second flexible connection 11. It can be understood that the top of the material collecting device 12 is provided with two feeding ports, which are respectively connected to the discharging ends of the corresponding feeding pipes 4-1 through a second flexible connection 11. During operation, the small electromagnetic feeder vibrates to convey the materials in the feeding pipe to the material collecting device 12. A second cylinder 4-2 is arranged on the surface of the discharging end of the feeding pipe 4-1. The piston rod end of the second cylinder 4-2 is hinged to one end of the second swing arm, and the other end of the second swing arm is fixedly connected to the second valve shaft. The second valve shaft can drive the second valve to rotate, so as to realize the on-off adjustment of the discharging end of the feeding pipe 4-1. The feeder 4 can also adopt a spiral auger feeder, a vibrating feeder, a belt conveyor, etc.

[0038] Each of the hoppers 7 is supported by two hopper brackets 5. The lower ends of the hopper brackets 5 are fixed on the weighing body bottom plate 3, and at least two vertically extending screw rods are fixed at the upper ends of the hopper brackets 5. The ear plates on the side of the hopper 7 are connected with the screw rods in a matching manner to realize the support and fixation of the hopper 7.

[0039] An exhaust filter element 10 is arranged in cooperation with the hopper 7. The exhaust filter element 10 communicates with the inner cavity of the hopper 7, so that when the three-way diverter 9 discharges materials towards the hopper 7, the air in the hopper 7 is discharged from the exhaust filter element 10.

[0040] A flow-aiding device 13 is also installed on the side of the hopper 7. During operation, it plays a role in breaking the arch, preventing the materials from arching, and can effectively increase the fluidity of the materials. In production, the flow-aiding device 13 can adopt an electric vibrator, a pneumatic vibrator, or a motor for mechanical arch breaking.

[0041] As Figures 1-4 shown, during the working process, when it is necessary to collect the material quantity in the hoppers of two loss-in-weight scales, the system automatically switches to the corresponding working position of the three-way diverter 9 for feeding. During the feeding process, the system continuously monitors the material position and automatically stops feeding once the preset position is reached.

[0042] After starting the first loss-in-weight scale, the scale enters the weight feedback mode. The system continuously collects the sensor data thereof, and through the algorithm processing of the controller, accurately adjusts the feeding amount of the feeder 4 to realize the dynamic switching and accurate metering between the loss-in-weight scales.

[0043] During the operation of the first loss-in-weight scale, if the material quantity in the hopper 7 drops below the replenishment threshold, the first loss-in-weight scale gradually reduces the feeding quantity. At the same time, the second loss-in-weight scale is started, and the feeding quantity is gradually increased to ensure that the total feeding quantity of the two scales is constant, achieving precise metering. After the first loss-in-weight scale completes its task, it stops, and the system automatically switches the diverter to the working station of the first loss-in-weight scale for replenishment, ensuring that its independent operation does not affect the metering accuracy of the second loss-in-weight scale.

[0044] The operation of the second loss-in-weight scale is similar. When the material drops below the threshold, the second loss-in-weight scale gradually reduces the feeding quantity, and at the same time, activates the first loss-in-weight scale to increase the feeding quantity until the complete switch. After the switch is completed, the second loss-in-weight scale stops, and the system switches the diverter to the working station of the second loss-in-weight scale for replenishment, ensuring continuous and precise metering.

[0045] Circular execution and efficiency guarantee: The system will circularly execute the above steps to ensure the continuity and precision of the entire material metering process until the task is completed.

[0046] An example of the switching process is illustrated. Switching from the first loss-in-weight scale to the second loss-in-weight scale: The first loss-in-weight scale is initially 10 grams per second and decreases by 1 gram per second; the second loss-in-weight scale is initially 0 grams and increases by 1 gram per second. The total output of the two scales remains 10 grams per second until the first loss-in-weight scale stops and the second loss-in-weight scale operates independently.

[0047] Switching from the second loss-in-weight scale to the first loss-in-weight scale: The second loss-in-weight scale is initially 10 grams per second and decreases by 1 gram per second; the first loss-in-weight scale is initially 0 grams and increases by 1 gram per second. The total output is maintained at 10 grams per second until the second loss-in-weight scale stops and the first loss-in-weight scale operates independently.

[0048] This process adopts a gradual load transfer and total quantity control strategy. During the switching process between the first loss-in-weight scale and the second loss-in-weight scale, dynamic load adjustment technology is used to ensure that the total output of the two scales always remains constant by gradually reducing the output of one scale while increasing the output of the other scale. This method achieves seamless switching and precise metering, ensuring the continuous operation and metering accuracy of the system.

[0049] Finally, it should be noted that the above specific implementation manners are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A Gemini high-precision weightlessness scale structure, characterized in that: It comprises a base (1), wherein the base (1) is provided with two sets of loss-in-weight scales, and feed ports are respectively provided at the tops of the two sets of loss-in-weight scales; Each set of loss-in-weight scales comprises a weighing sensor (2), a weighing base plate (3), a feeder (4), and a hopper (7), wherein the weighing sensor (2) is mounted on the base (1), the weighing base plate (3) is mounted on the weighing sensor (2), the feeder (4) and the hopper (7) are mounted on the weighing base plate (3), and the discharge end of the hopper (7) is connected to the feed end of the feeder (4) via a first flexible connection (6); The discharge ends of the two feeders (4) are respectively connected to the feed end of a material collector (12) via a second flexible connection (11), and the material collector (12) is fixedly connected to the base (1).

2. The Gemini high-precision weightlessness scale structure as claimed in claim 1, characterized in that: A three-way distributor (9) is arranged above the two groups of loss-in-weight scales, the two outlets of the three-way distributor (9) are softly connected to the top feed ports of the two groups of loss-in-weight scales, respectively, and the other port of the three-way distributor (9) is an inlet; The three-way distributor (9) is provided with an outlet adjustment component to adjust the opening and closing of the two inlets and outlets.

3. The Gemini high-precision weightlessness scale structure as claimed in claim 2, characterized in that: The regulating component comprises a first cylinder (9-1), a first swing arm (9-2), a first valve and a first valve shaft (9-3); the first cylinder (9-1) is mounted on a housing of the three-way distributor (9); the piston rod end of the first cylinder (9-1) is hinged to one end of the swing arm (9-2); the other end of the first swing arm (9-2) is fixedly connected to the first valve shaft (9-3); the first valve is fixedly connected to the first valve shaft (9-3) and is driven to rotate by the first valve shaft (9-3) to achieve on-off regulation of the two inlets and outlets of the three-way distributor (9).

4. The Gemini high-precision weightlessness scale structure as claimed in claim 1, characterized in that: The base (1) is supported by leveling legs.

5. The Gemini high-precision weightlessness scale structure as claimed in claim 1, characterized in that: The ear plate on the outer side wall of the hopper (7) is connected to the connecting bolts fixed on the top of the hopper bracket (5).

6. The Gemini high-precision weightlessness scale structure as claimed in claim 1, characterized in that: A weighing body bottom plate (3) is arranged on the top of the weighing sensor (2), and a feeder (4) is installed on the weighing body bottom plate (3).

7. The Gemini high-precision weightlessness scale structure as claimed in claim 1, characterized in that: Each of the hoppers (7) is supported by two hopper brackets (5), the lower ends of the hopper brackets (5) are fixed to the bottom plate (3) of the scale body, at least two vertically extending screw rods are fixed to the upper ends of the hopper brackets (5), and the ear plates on the sides of the hoppers (7) are cooperatively connected with the screw rods to achieve support and fixation of the hoppers (7).

8. The Gemini high-precision weightlessness scale structure as claimed in claim 1, characterized in that: The hopper (7) is provided with an exhaust filter element (10) in cooperation with the exhaust filter element (10), and the exhaust filter element (10) is connected to the inner cavity of the hopper (7).

9. The Gemini high-precision loss-in-weight scale structure as claimed in claim 1, characterized in that: A flow-aiding device (13) is also installed on the side of the hopper (7).

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