Automatic mixing and rationing device for small-batch weighing and metering of multiple large-capacity powder bins

Abstract

The invention discloses an automatic mixing and rationing device for small-batch weighing and metering of multiple large-capacity powder bins. The automatic mixing and rationing device comprises a disc capable of rotating around a hollow center shaft of the disc and a driving box for driving the disc and a fixed object on the disc to rotate. The multiple subsystems are arranged on the disc, are in parallel operation relation and are the same in structure, form and parameter, each subsystem comprises a large-capacity first-stage stock bin and a small-capacity second-stage stock bin, the large-capacity first-stage stock bin is provided with a first-stage stock bin inlet and a first-stage discharging hopper, the lower end of the first-stage discharging hopper is provided with a first-stage stock bin outlet, and the lower end of the second-stage discharging hopper is provided with a second-stage stock bin outlet. A secondary stock bin inlet and a secondary discharge funnel are arranged on the small-capacity secondary stock bin; the system has the beneficial effects that a plurality of subsystems are connected in parallel and operate simultaneously, so that the production efficiency is improved, and powder of the subsystems is mixed after being accurately weighed and metered; and a plurality of subsystems are in redundant design and are standby for each other, so that the operation reliability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of powder mixing and dispensing, and in particular relates to an automatic mixing and dispensing device for small-batch weighing and metering of multiple large-capacity powder silos. Background Art

[0002] In many industrial production fields, such as chemicals, building materials, and food, it is often necessary to accurately weigh, measure, mix, and distribute a variety of powders. Traditional powder mixing and dispensing devices have many problems, such as low efficiency and difficulty in meeting the production needs of multiple varieties and small batches; low weighing and metering accuracy leads to unstable product quality; equipment reliability and maintainability are poor, and once a failure occurs, it needs to be shut down for maintenance, affecting production progress. With the continuous improvement of industrial automation, the performance requirements for powder mixing and dispensing devices are also becoming increasingly higher. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic mixing and dispensing device for small-batch weighing and metering of multiple large-capacity powder silos, so as to solve the problems of low efficiency, poor precision, and insufficient reliability existing in the prior art, and to achieve efficient operation of multiple systems in parallel, accurate weighing and metering of large-capacity silos, and precise and rapid mixing of different types of powders.

[0004] To achieve the above object, the present invention provides the following technical solution: an automatic mixing and dispensing device for weighing and metering a small batch of multiple large-capacity powder silos, comprising

[0005] It has a disc that can rotate around its own hollow central axis and a drive box that drives the disc and the fixed object on it to rotate;

[0006] Multiple subsystems are arranged on the disc and are in parallel operation relationship with each other and have the same structure, form and parameters. Each subsystem includes a large-capacity primary silo and a small-capacity secondary silo. The large-capacity primary silo is provided with a primary silo inlet and a primary unloading funnel, and the lower end of the primary unloading funnel is provided with a primary silo outlet. The small-capacity secondary silo is provided with a secondary silo inlet and a secondary unloading funnel, and the secondary unloading funnel is provided with a secondary unloading silo outlet. The primary unloading silo outlet and the secondary silo inlet are vertically connected to each other but have no mechanical contact.

[0007] Below the outlets of all secondary unloading bins, there is a collecting funnel for collecting all the powder materials at the outlets of the secondary unloading bins; the outlets of all secondary unloading bins are vertically connected to the collecting funnel but without mechanical contact;

[0008] Each subsystem small-capacity secondary silo is equipped with a weighing system. Each weighing system can and can only measure the total weight of the sum of the weight of the corresponding small-capacity secondary silo and the weight of the powder content, and the measuring range is not greater than the total weight.

[0009] As a preferred technical solution of the present invention, a first automatic unloading valve is installed on the outlet of the first-level unloading bin of all subsystems, and a second automatic unloading valve is installed on the outlet of the second-level unloading bin.

[0010] As a preferred technical solution of the present invention, the first automatic unloading valve and the second automatic unloading valve are one or more of an electric butterfly valve, an electric gate valve, an electric stop valve, and a solenoid valve.

[0011] As a preferred technical solution of the present invention, the weighing system includes a weighing sensor, a weighing data processing and logic controller, and the weighing sensor and the weighing data processing and logic controller are communicatively connected.

[0012] As a preferred technical solution of the present invention, the weighing data and logic controller can compare the measured value of the weighing sensor with the preset value, control the switching status of the first automatic unloading valve and the second automatic unloading valve of the corresponding subsystem, and can calculate the remaining amount of powder in the first-level silo of the corresponding subsystem according to the powder replenishment record in the first-level silo of the corresponding subsystem, and provide a replenishment demand reminder or alarm.

[0013] As a preferred technical solution of the present invention, the drive box can drive the disc rotating around its own hollow central axis and the subsystems arranged thereon to rotate, so as to achieve the purpose of rotating the subsystems and positioning them on the circumference.

[0014] As a preferred technical solution of the present invention, multiple subsystems arranged on the disc are in parallel operation relationship with each other and have the same structure, form and parameters. The subsystems have a redundant design and each subsystem can be switched and operated at will and serve as backup for each other.

[0015] As a preferred technical solution of the present invention, each subsystem is provided with an electrical control cable. The electrical control cable adopts multiple strands of soft wires and is gathered into the center hole of the hollow center shaft and then led out to facilitate the rotation of the entire system without affecting electrical control.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] Multiple subsystems run in parallel to improve production efficiency and achieve accurate weighing and mixing of subsystem powders;

[0018] Multiple subsystems are designed as redundant and serve as backup for each other, thus improving operational reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of embodiment 1 of the present invention;

[0020] Figure 2 This is a structural diagram of embodiment 2 of the present invention;

[0021] In the figure: 1. Drive box; 2. Disc; 3. Large-capacity first-level silo; 31. First-level unloading funnel; 310. First-level unloading silo outlet; 3101. First automatic unloading valve; 4. First-level load-bearing frame; 41. First-level load-bearing part; 5. Small-capacity second-level silo; 51. Second-level unloading funnel; 510. Second-level unloading silo outlet; 5101. Second automatic unloading valve; 6. Second-level load-bearing frame; 61. Second-level load-bearing part; 7. Weighing sensor; 9. Collection funnel. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] See also Figure 1 , which is the first embodiment of the present invention, provides an automatic mixing and dispensing device for weighing and measuring small batches of multiple large-capacity powder silos, including

[0025] The device comprises a disc 2 that can rotate around its own hollow central axis and a drive box 1 that drives the disc 2 and the objects mounted thereon to rotate. The drive box 1 can drive the disc 2 that rotates around its own hollow central axis and the various subsystems mounted thereon to rotate, thereby achieving the purpose of rotating the subsystems and positioning them on the circumference. The drive box 1 is mounted on the side. The power source of the drive box 1 is usually an electric motor, and the driving method is as follows:

[0026] Gear transmission: A driving gear is mounted on the output shaft of the motor inside the drive box 1, and a matching driven gear is mounted on the disc 2 or on a transmission component connected to the disc 2. When the motor is started, the driving gear rotates, and the meshing between the gears drives the driven gear to rotate, thereby causing the disc 2 and the subsystem to rotate around the hollow central axis.

[0027] Belt drive: Pulleys are installed on the motor output shaft of the drive box 1 and the transmission component of the disc 2, and the two pulleys are connected by a belt. When the motor is running, it drives the active pulley to rotate, and the belt moves accordingly, thereby driving the driven pulley and the disc 2 to rotate.

[0028] Multiple subsystems with the same structure, form and parameters and in parallel operation relationship are arranged on the disc 2. The subsystems have redundant design. Each subsystem can be switched and operated at will and serve as a backup for each other. Each subsystem includes a large-capacity first-level silo 3 and a small-capacity second-level silo 5, which realizes the addition of large-capacity first-level silo 3 and small-capacity second-level silo 5. The large-capacity first-level silo 3 is provided with a first-level silo inlet and a first-level unloading funnel 31, which realizes the addition of the first-level silo inlet and the first-level unloading funnel 31. The silo inlet is used for adding powder materials, and a first-stage unloading hopper 31 is provided with a first-stage unloading hopper outlet 310 at the lower end. The small-capacity second-stage silo 5 is provided with a second-stage silo inlet and a second-stage unloading hopper 51, thereby realizing the addition of a second-stage silo inlet and a second-stage unloading hopper 51. The second-stage unloading hopper 51 is provided with a second-stage unloading hopper outlet 510. The first-stage unloading hopper outlet 310 and the second-stage silo inlet are vertically connected up and down but have no mechanical contact. The large-capacity first-stage silo 3 and the small-capacity second-stage silo 5 are unloaded by gravity.

[0029] Below all secondary unloading bin outlets 510, there is a collecting funnel 9 for collecting all powders at the secondary unloading bin outlets 510; all secondary unloading bin outlets 510 are vertically connected to the collecting funnel 9 but have no mechanical contact;

[0030] The first-level load-bearing mechanism bears the weight of the large-capacity first-level silo 3. The first-level load-bearing mechanism includes a first-level load-bearing frame 4 that supports the large-capacity first-level silo 3, and the first-level load-bearing frame 4 increases the support for the large-capacity first-level silo 3. A plurality of first-level load-bearing members 41 are installed on the first-level load-bearing frame 4, and the support for the first-level load-bearing frame 4 is increased by the plurality of first-level load-bearing members 41. The second-level load-bearing mechanism bears the weight of the small-capacity second-level silo 5. The second-level load-bearing mechanism includes a second-level load-bearing frame 6 that supports the small-capacity second-level silo 5, and the support for the small-capacity second-level silo 5 is increased by the second-level load-bearing frame 6. A plurality of second-level load-bearing members 61 are installed on the second-level load-bearing frame 6, and the support for the second-level load-bearing frame 6 is increased by the plurality of second-level load-bearing members 61. Each subsystem has a small-capacity second-level silo The silo 5 is provided with a weighing system. Each weighing system can and can only measure the total weight of the sum of the weight of the corresponding small-capacity secondary silo 5 and the weight of the powder material inside, and the measuring range is not greater than the total weight. The weighing system includes a weighing sensor 7, a weighing data processing and logic controller, and the weighing sensor 7 is communicatively connected to the weighing data processing and logic controller. The weighing data and logic controller can compare the measured value of the weighing sensor 7 with the preset value, control the switching state of the first automatic unloading valve 3101 and the second automatic unloading valve 5101 of the corresponding subsystem, and can calculate the remaining amount of powder material in the corresponding subsystem primary silo according to the powder material replenishment record in the corresponding subsystem primary silo, and provide a replenishment demand reminder or alarm.

[0031] In this embodiment, preferably, a first automatic unloading valve 3101 is installed on the first-level unloading bin outlet 310, and a second automatic unloading valve 5101 is installed on the second-level unloading bin outlet 510. The first automatic unloading valve 3101 and the second automatic unloading valve 5101 can both be electric butterfly valves. The electric butterfly valve has the characteristics of simple structure, small size and light weight, and is suitable for installation in the powder conveying pipeline; it can be opened and closed quickly to control the unloading speed and flow of the powder; during the powder unloading process, according to the signal sent by the control system, the electric butterfly valve can accurately control the valve opening to achieve unloading according to demand; moreover, its sealing performance is good, which can effectively prevent powder leakage. Ensure the stability and safety of system operation; in addition, the electric gate valve can also be used as an option for the first automatic unloading valve 3101 and the second automatic unloading valve 5101. The electric gate valve drives the valve stem through a motor to raise and lower the gate plate to control the opening and closing of the valve. It has the advantages of good sealing and low resistance, and can meet the precise control requirements of powder unloading. When the large-capacity first-level silo 3 replenishes the small-capacity second-level silo 5, the electric gate valve can accurately control the replenishment amount based on the information feedback from the weighing system to ensure the accuracy of the powder weight in the small-capacity second-level silo 5. Electric stop valves and solenoid valves can also be used as options for the first automatic unloading valve 3101 and the second automatic unloading valve 5101.

[0032] In this embodiment, preferably, the subsystem is provided with an electrical control cable, which is made of multiple strands of soft wire and is brought together to the center hole of the hollow center shaft and then led out to facilitate the rotation of the entire system without affecting electrical control.

[0033] Example 2

[0034] See also Figure 2 , which is the second embodiment of the present invention, is based on the previous embodiment, except that:

[0035] It has a disc 2 that can rotate around its own hollow central axis and a drive box 1 that drives the disc 2 and the fixed objects on it to rotate; the drive box 1 can drive the disc 2 that rotates around its own hollow central axis and the various subsystems arranged on it to rotate, so as to achieve the purpose of rotating the subsystems and positioning them on the circumference; the drive box 1 is hoisted by a hoisting method.

[0036] The advantages of driving the disc 2 and the subsystem to rotate around the hollow central axis are as follows:

[0037] During the production process, the large-capacity primary silos of different subsystems need to be replenished with different types or batches of powders. The rotation of Disc 2 allows each subsystem to accurately move to the designated replenishing position, allowing the replenishing equipment to precisely connect with the inlet of the large-capacity primary silo. This avoids the errors and time consumption caused by manual position adjustment and ensures that the powder is accurately added to the corresponding large-capacity primary silo.

[0038] Through rotation, multiple subsystems can reach the refilling point in a preset order, achieving continuous and efficient refilling operations. This helps build an automated refilling production line, improves the consistency and efficiency of the entire production process, and reduces production interruptions caused by untimely or inaccurate refilling.

[0039] When a subsystem fails or requires maintenance, the disc 2 can be quickly moved to a convenient location, such as near a maintenance platform, so that operators can more conveniently inspect, repair, and replace components of the faulty subsystem, reducing maintenance time and difficulty and minimizing the impact on the entire production process.

[0040] The working principle and use process of the present invention are as follows: the driving box 1 is turned on, and the driving disc 2 and the subsystems rotate around the hollow central axis so that each subsystem reaches a suitable working position;

[0041] The weighing system of the small-capacity secondary silo 5 begins operation. The weighing sensor 7 monitors the weight of the small-capacity secondary silo 5 and the powder material therein in real time, converts the weight signal into an electrical signal, and transmits it to the weighing data and logic controller. The weighing data and logic controller compares the value measured by the weighing sensor 7 with the preset value, controls the opening and closing states of the first automatic unloading valve 3101 and the second automatic unloading valve 5101 of the corresponding subsystem, and calculates the remaining amount of powder material in the corresponding subsystem primary silo according to the powder material refill record in the corresponding subsystem primary silo, and provides a refill request reminder or alarm.

[0042] After completing the production task, turn off the drive box 1 and stop the rotation of the disc 2 and the subsystem; close the first automatic unloading valve 3101 and the second automatic unloading valve 5101 to ensure that the powder in the equipment no longer flows; clean and maintain the equipment and prepare it for the next use.

[0043] Although the embodiments of the present invention have been shown and described, as detailed above, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic mixing and dispensing device for weighing and metering small batches of multiple large-capacity powder silos, characterized by: include It has a disc (2) that can rotate around its own hollow central axis and a drive box (1) that drives the disc (2) and the fixed object thereon to rotate; A plurality of subsystems are provided on the disc (2) and are in a parallel operation relationship with each other and have the same structure, form and parameters. Each subsystem includes a large-capacity primary silo (3) and a small-capacity secondary silo (5). The large-capacity primary silo (3) is provided with a primary silo inlet and a primary discharge funnel (31), and the lower end of the primary discharge funnel (31) is provided with a primary silo outlet (310). The small-capacity secondary silo (5) is provided with a secondary silo inlet and a secondary discharge funnel (51), and the secondary discharge funnel (51) is provided with a secondary discharge silo outlet (510). The primary discharge silo outlet (310) and the secondary silo inlet are vertically connected to each other but have no mechanical contact. Below all secondary unloading bin outlets (510), there is a collecting funnel (9) for collecting powder from all secondary unloading bin outlets (510); all secondary unloading bin outlets (510) are vertically connected to the collecting funnel (9) but without mechanical contact; Each subsystem small-capacity secondary silo (5) is provided with a weighing system. Each weighing system can and can only measure and weigh the total weight of the sum of the weight of the corresponding small-capacity secondary silo (5) and the weight of the powder material inside, and the measuring range is not greater than the total weight.

2. The automatic mixing and dispensing device for small batch weighing and metering of multiple large-capacity powder silos according to claim 1 is characterized by: A first automatic unloading valve (3101) is installed on the first-level unloading bin outlet (310) of all subsystems, and a second automatic unloading valve (5101) is installed on the second-level unloading bin outlet (510).

3. The automatic mixing and dispensing device for small batch weighing and metering of multiple large-capacity powder silos according to claim 2 is characterized by: The first automatic unloading valve (3101) and the second automatic unloading valve (5101) are one or more of an electric butterfly valve, an electric gate valve, an electric stop valve, and a solenoid valve.

4. The automatic mixing and dispensing device for small batch weighing and metering of multiple large-capacity powder silos according to claim 1 is characterized in that: The weighing system comprises a weighing sensor (7) and a weighing data processing and logic controller, and the weighing sensor (7) and the weighing data processing and logic controller are communicatively connected.

5. The automatic mixing and dispensing device for small batch weighing and metering of multiple large-capacity powder silos according to claim 4 is characterized in that: The weighing data and logic controller can compare the measured value of the weighing sensor (7) with the preset value, control the switch state of the first automatic unloading valve (3101) and the second automatic unloading valve (5101) of the corresponding subsystem, and can calculate the remaining amount of powder in the first-level silo of the corresponding subsystem according to the powder refill record in the first-level silo of the corresponding subsystem, and provide a refill demand reminder or alarm.

6. The automatic mixing and dispensing device for small batch weighing and metering of multiple large-capacity powder silos according to claim 1 is characterized by: The driving box (1) can drive the disc (2) rotating around its own hollow central axis and the subsystems arranged thereon to rotate, so as to achieve the purpose of rotating the subsystems and positioning them on the circumference.

7. The automatic mixing and dispensing device for small batch weighing and metering of multiple large-capacity powder silos according to claim 1 is characterized by: The multiple subsystems arranged on the disc (2) are in a parallel operation relationship with each other and have the same structure, form and parameters. The subsystems have a redundant design and each subsystem can be switched and operated at will and serve as a backup for each other.

8. The automatic mixing and dispensing device for small batch weighing and metering of multiple large-capacity powder silos according to claim 1 is characterized by: Each subsystem is equipped with an electrical control cable, which uses multiple strands of soft wire and is gathered into the center hole of the hollow center shaft and then led out to facilitate the rotation of the entire system without affecting electrical control.

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