Self-stabilizing micro-quantity metering device for powder stirring

Abstract

The utility model provides a kind of self-stable micro measuring device for powder stirring, including fixed platform, powder conveyor unit, sling scale support, weighing assembly, weighing hopper upper cover assembly and shock absorbing component;Powder conveyor unit and sling scale support are installed based on fixed platform;Weighing assembly includes weighing sensor and weighing hopper, the base of weighing sensor is installed on sling scale support by shock absorbing component, and weighing hopper is arranged on the upper end of weighing sensor for weighing;Weighing hopper upper cover assembly includes weighing hopper upper cover and flexible connecting body, weighing hopper upper cover is hard connected with the output end of powder conveyor unit, weighing hopper upper cover is soft connected with weighing hopper by flexible connecting body, and feeding port is formed on weighing hopper upper cover for the output end of powder conveyor unit and weighing hopper are connected;Discharge valve is arranged at the lower outlet of weighing hopper, and vibrator is arranged on the outer side of the periphery of weighing hopper.The device maximizes the elimination of the interference of vibration to measurement, so that measurement can maintain the required accuracy.

Description

Technical Field

[0001] This utility model relates to the field of powder mixing technology, specifically, to a self-stabilizing micro-metering device for powder mixing. Background Technology

[0002] With increasingly stringent environmental protection requirements, on-site mixing of dry-mix mortar is prohibited. Dry-mix mortar is widely used in various construction projects, including roads, bridges, ports, and docks, making automated factory production an inevitable choice.

[0003] In the process of automated production in factories, the metering of powder needs to meet the needs of production line automation and can no longer be mainly done by manual metering. Therefore, it is necessary to develop a special metering device for powder metering.

[0004] Compared to the total amount of dry mortar, the demand for powder as an admixture is relatively small, and the required metering accuracy is relatively high. However, during the powder mixing process, the powder needs to be transported by a screw conveyor, and the powder hopper output needs to be equipped with a vibrator. These devices generate a lot of vibration energy during operation, which can easily interfere with the metering equipment installed along the powder transportation route.

[0005] Therefore, developing a dedicated measuring device that can maximize the elimination of vibration interference and ensure that the weighing accuracy meets the requirements is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a self-stabilizing micro-metering device for powder mixing that minimizes vibration interference and ensures satisfactory weighing accuracy.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a self-stabilizing micro-metering device for powder mixing, comprising a fixed platform, a powder conveyor unit, a hanging scale bracket, a weighing component, a weighing hopper cover component, and a shock absorption component.

[0008] Both the powder conveyor unit and the crane scale support are installed on the fixed platform.

[0009] The weighing assembly includes a weighing sensor and a weighing hopper. The base of the weighing sensor is mounted on the hanging scale bracket via a shock-absorbing component, and the weighing hopper is positioned above the weighing sensor for weighing.

[0010] The weighing hopper cover assembly includes a weighing hopper cover and a flexible connector. The weighing hopper cover is rigidly connected to the output end of the powder conveyor unit, and the weighing hopper cover is flexibly connected to the weighing hopper through the flexible connector. A feed inlet is provided on the weighing hopper cover to facilitate the connection between the output end of the powder conveyor unit and the weighing hopper.

[0011] A discharge valve is installed at the lower outlet of the weighing hopper, and vibrators are installed around the outer perimeter of the weighing hopper.

[0012] Preferably, the lower outlet of the weighing hopper is connected to a discharge pipe via a flexible hose.

[0013] Preferably, the powder conveying unit includes a powder silo and a screw conveyor. The powder silo is suspended below the fixed platform, and the screw conveyor is installed at the bottom of the split silo. The output end of the screw conveyor is connected to the feed inlet of the weighing hopper cover through a rigid pipe and a valve body.

[0014] Preferably, the weighing hopper cover is provided with a vent.

[0015] Preferably, the flexible connector is a flexible pipe with a corrugated structure.

[0016] Preferably, a buffer cone plate is provided at the center of the material drop channel formed inside the flexible pipe, with the tip of the buffer cone plate facing upward.

[0017] Preferably, the weighing sensor is mounted on the bottom end of the hanging scale bracket via a base and a shock-absorbing assembly.

[0018] Preferably, the shock absorption assembly is a plurality of evenly distributed springs or hydraulic shock absorbers.

[0019] Preferably, the weighing bucket has a bucket-shaped structure that is wider at the top and narrower at the bottom.

[0020] Preferably, the powder conveyor unit is positioned higher than the weighing hopper.

[0021] This utility model has substantial features and advancements compared to existing technologies. Specifically, it adopts a suspended weighing hopper, which quickly self-balances and stabilizes under gravity after disturbance, preventing interference from tilting. Furthermore, the weighing hopper cover and the hopper itself are separated by a breathable flexible connection to isolate the vibration interference from the screw conveyor during material feeding. Ventilation ports are provided to ensure balanced air pressure during feeding, preventing air pressure from interfering with metering accuracy. A buffer cone plate is installed below the feed inlet to slow down the material flow and reduce impact interference. A shock absorber is installed to isolate vibration interference transmitted from the fixed platform via the suspended weighing bracket. A flexible connection is provided at the discharge port to isolate vibration interference transmitted from downstream equipment. A vibrator is installed to ensure clean, non-stick discharge, ensuring accurate metering. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a self-stabilizing micro-metering device for powder stirring according to this utility model.

[0023] In the diagram: 1. Fixed platform; 2. Powder silo; 3. Bolt conveyor; 4. Vent; 5. Hanging scale bracket; 6. Leveling bolt; 7. Weighing hopper cover; 8. Flexible connector; 9. Weighing hopper; 10. Buffer cone plate; 11. Weighing sensor; 12. Vibration damping assembly; 13. Vibrator; 14. Discharge valve; 15. Hoses; 16. Discharge pipe. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0025] like Figure 1 As shown, a self-stabilizing micro-metering device for powder mixing includes a fixed platform 1, a powder conveyor unit, a hanging scale support 5, a weighing component, a weighing hopper cover component, and a shock absorption component 12.

[0026] Both the powder conveyor unit and the hanging scale support are installed on the fixed platform 1. Specifically, the powder conveyor unit is set higher than the weighing hopper. The powder conveyor unit includes a powder hopper 2 and a screw conveyor 3. The powder hopper 2 is suspended below the fixed platform 1, and the screw conveyor 3 is installed at the bottom of the split hopper 2. The output end of the screw conveyor 3 is connected to the feed inlet of the weighing hopper cover 7 through a rigid pipe and a valve body to form a stable feeding mechanism. Since the conveying of the screw conveyor 3 will cause vibration, it is necessary to isolate its vibration interference.

[0027] The weighing assembly includes a weighing sensor 11 and a weighing hopper 9. The base of the weighing sensor 11 is mounted on the bottom of the hanging scale bracket 5 via a shock-absorbing assembly 12. The weighing hopper 9 is located on the upper end of the weighing sensor 11 for weighing.

[0028] Specifically, the weighing sensor 11 is a high-precision sensor, and its base is installed on the bottom crossbeam of the hanging scale bracket 5 through several evenly distributed spring shock absorbers or hydraulic shock absorbers. The bottom end of the hanging scale bracket 5 is provided with leveling bolts 6 that connect to the bottom crossbeam to adjust the levelness of the bottom crossbeam.

[0029] The weighing hopper cover assembly includes a weighing hopper cover 7 and a flexible connector 8. The weighing hopper cover 7 is rigidly connected to the output end of the powder conveyor unit, and the weighing hopper cover 7 is flexibly connected to the weighing hopper 9 through the flexible connector 8. The weighing hopper has an overall bucket-shaped structure that is wider at the top and narrower at the bottom. The weighing hopper cover 7 has a feed inlet for connecting the output end of the powder conveyor unit and the weighing hopper 9. In this embodiment, the weighing hopper cover 7 is provided with a vent 4, and the flexible connector 8 is a flexible pipe with a corrugated structure.

[0030] A buffer cone plate 10 is provided at the center of the material drop channel formed inside the flexible pipe, with the tip of the buffer cone plate 10 facing upward.

[0031] A discharge valve 14 is provided at the lower outlet of the weighing hopper 9, and a vibrator 13 is provided on the outer periphery of the weighing hopper 9. The lower outlet of the weighing hopper 9 is connected to the discharge pipe 16 through a flexible hose 15.

[0032] Work process description:

[0033] The powder material fed into the powder silo 2 is conveyed from the screw conveyor 3 to the weighing hopper 9. It enters the hopper through the feed port of the weighing hopper cover 7 and the flexible connector 8. During this process, since the weighing hopper cover 7 is connected to the weighing hopper 9 through the flexible connector 8, the vibration from the bolt conveyor 3 is moderately isolated, reducing the interference of the vibrating symmetrical hopper 9.

[0034] The lower end of the weighing hopper 9 is connected to the discharge pipe 16 via a flexible hose 15. The entire weighing assembly is placed on the upper end of the shock absorption assembly 12, which isolates the vibration transmitted from the back-end equipment to the maximum extent.

[0035] A buffer cone plate 10 is installed below the feed inlet to slow down the material flow speed and reduce the impact interference of the material flow. After the weighing sensor 11 weighs the material in the symmetrical bucket 9, the vibrator 13 is started to vibrate and output the powder material from the bottom outlet to avoid residue affecting subsequent weighing.

[0036] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A self-stabilizing micro-metering device for powder stirring, characterized in that: Includes a fixed platform, powder conveyor unit, crane scale support, weighing components, weighing hopper cover components, and shock absorption components; Both the powder conveyor unit and the crane scale support are installed on the fixed platform. The weighing assembly includes a weighing sensor and a weighing hopper. The base of the weighing sensor is mounted on the hanging scale bracket via a shock-absorbing component, and the weighing hopper is positioned above the weighing sensor for weighing. The weighing hopper cover assembly includes a weighing hopper cover and a flexible connector. The weighing hopper cover is rigidly connected to the output end of the powder conveyor unit, and the weighing hopper cover is flexibly connected to the weighing hopper through the flexible connector. A feed inlet is provided on the weighing hopper cover to facilitate the connection between the output end of the powder conveyor unit and the weighing hopper. A discharge valve is installed at the lower outlet of the weighing hopper, and vibrators are installed around the outer perimeter of the weighing hopper.

2. The self-stabilizing micro-metering device for powder stirring according to claim 1, characterized in that: The lower outlet of the weighing hopper is connected to the discharge pipe via a flexible hose.

3. The self-stabilizing micro-metering device for powder stirring according to claim 1, characterized in that: The powder conveying unit includes a powder silo and a screw conveyor. The powder silo is suspended below the fixed platform, and the screw conveyor is installed at the bottom of the split silo. The output end of the screw conveyor is connected to the feed port of the weighing hopper cover through a rigid pipe and a valve body.

4. The self-stabilizing micro-metering device for powder stirring according to claim 3, characterized in that: The weighing hopper is equipped with a vent.

5. The self-stabilizing micro-metering device for powder stirring according to claim 4, characterized in that: The flexible connector is a flexible pipe with a corrugated structure.

6. The self-stabilizing micro-metering device for powder stirring according to claim 5, characterized in that: A buffer cone plate is installed at the center of the material drop channel formed inside the flexible pipe, with the tip of the buffer cone plate facing upwards.

7. The self-stabilizing micro-metering device for powder stirring according to claim 6, characterized in that: The weighing sensor is mounted on the bottom of the crane scale bracket via a base and a shock-absorbing assembly.

8. The self-stabilizing micro-metering device for powder stirring according to claim 1, characterized in that: The shock absorption assembly consists of several evenly distributed springs or hydraulic shock absorbers.

9. The self-stabilizing micro-metering device for powder stirring according to claim 1, characterized in that: The weighing bucket has a bucket-shaped structure that is wider at the top and narrower at the bottom.

10. The self-stabilizing micro-metering device for powder stirring according to claim 1, characterized in that: The powder conveyor unit is positioned higher than the weighing hopper.

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