Static powder metering device

Abstract

The utility model relates to the field of powder metering, and discloses a static powder metering device which comprises a storage tank, a sealing cover is arranged at the top of the storage tank, a supporting seat is fixedly connected to the outer wall of the storage tank, a metering valve is fixedly connected to the bottom of the storage tank through a pipeline, a mounting frame is fixedly connected to the outer wall of the storage tank, and the mounting frame is fixedly connected to the bottom of the storage tank through a pipeline. A motor is fixedly connected to the outer wall of the mounting frame, a worm is fixedly connected to the output end of the motor, a rotating shaft is rotationally connected to the inner wall of the storage tank through a support, stirring blades are fixedly connected to the outer wall of the rotating shaft, and a worm gear is fixedly connected to the outer wall of the rotating shaft. According to the powder metering device, the metering valve, the metering scale, the receiving box and other structures are arranged, before powder is metered, metal impurities are adsorbed and sieved through the electromagnetic sieve plate, scrap iron, impurities or large-particle materials in the powder are automatically removed through the magnetic separation and sieving functions, and the metering accuracy is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of powder metering, and in particular to a static powder metering device. Background Technology

[0002] The main reasons for the need to measure powders include ensuring product quality, improving production efficiency, meeting regulatory requirements, and optimizing cost control. Ensuring product quality is one of the important reasons for powder measurement. Through accurate measurement, the accurate proportion of each component can be ensured, thereby ensuring that the quality and performance of the final product meet expectations. For example, in the chemical and food industries, the accurate measurement of raw materials is crucial for the stability and safety of products.

[0003] A search revealed that Chinese Patent Publication No. CN220893541U discloses a powder metering device. Through the design of a quantitative discharge component, when discharging and weighing powder, the quantitative discharge component can be started to rotate inside the discharge pipe. The quantitative groove on the surface of the roller is used to discharge the powder in a quantitative manner, and the cylindrical surface of the roller seals the discharge pipe. The discharged quantitative powder will fall into the weighing mechanism for weighing, and the discharge amount is the same each time, thereby improving the accuracy of powder metering.

[0004] In the above technical solution, precise metering is achieved by quantitatively discharging powder through a quantitative discharging component. However, some powders may be mixed with impurities, such as metal impurities, during production or transportation. These impurities are difficult to remove before metering, which may lead to the inability to guarantee the accuracy of subsequent powder metering. Therefore, a static powder metering device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a static powder metering device, which aims to improve the problem that the existing static powder metering devices lack magnetic impurity separation and sieving functions before metering, resulting in reduced powder metering accuracy.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a static powder metering device, including a storage tank, a sealing cover on the top of the storage tank, a support base fixedly connected to the outer wall of the storage tank, a metering valve fixedly connected to the bottom of the storage tank via a pipe, a mounting frame fixedly connected to the outer wall of the storage tank, a motor fixedly connected to the outer wall of the mounting frame, a worm gear fixedly connected to the output end of the motor, a rotating shaft rotatably connected to the inner wall of the storage tank via a bracket, a stirring blade fixedly connected to the outer wall of the rotating shaft, a worm wheel fixedly connected to the outer wall of the rotating shaft, an eccentric wheel fixedly connected to the outer wall of the worm gear, an annular frame inside the storage tank, an electromagnetic screen plate fixedly connected to the inner wall of the annular frame, a contact block fixedly connected to the bottom of the electromagnetic screen plate, a metering scale at the bottom of the support base, a receiving box at the top of the metering scale, and an installation positioning assembly inside the storage tank.

[0007] As a further description of the above technical solution:

[0008] The outer wall of the worm is rotatably connected to the inner wall of the storage tank, and the worm meshes with the worm wheel.

[0009] As a further description of the above technical solution:

[0010] The installation positioning assembly includes a fixed base, a sliding rod inserted into the inner wall of the fixed base, a spring provided on the surface of the sliding rod, a positioning block rotatably connected to the top of the sliding rod, the outer wall of the positioning block being magnetically connected to the inner surface of the positioning base, and a limit rod fixedly connected to the bottom of the sealing cover.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the fixed base is fixedly connected to the inner wall of the storage tank, and the outer wall of the sliding rod is slidably connected to the inner wall of the annular frame.

[0013] As a further description of the above technical solution:

[0014] The top end of the spring is fixedly connected to the bottom of the electromagnetic screen plate, and the sliding rod passes through the positioning seat.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the receiving box is provided with a dust cover, the bottom of the dust cover is provided with an elastic rubber ring two, and the top of the dust cover is provided with an elastic rubber ring one.

[0017] As a further description of the above technical solution:

[0018] The two elastic rubber rings are fitted onto the outer wall of the receiving box.

[0019] As a further description of the above technical solution:

[0020] The dust cover is designed to be narrower at the top and wider at the bottom.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting up a metering valve, a metering scale, a receiving box, a motor, a worm gear, a worm wheel, a ring frame, an electromagnetic sieve plate, and a positioning and installation assembly, before metering the powder, the electromagnetic sieve plate adsorbs metal impurities and sieves them. By utilizing the magnetic separation and sieving functions, the iron filings, impurities, or large particles in the powder are automatically removed, ensuring the accuracy of the metering.

[0023] 2. In this utility model, by setting up a dustproof sleeve, an elastic rubber ring one, and an elastic rubber ring two, the phenomenon of powder flying can be avoided when metering the material is discharged, thereby reducing material loss and ensuring the cleanliness of the metering environment. Attached Figure Description

[0024] Figure 1 This is a front view schematic diagram of the main structure of the static powder metering device proposed in this utility model;

[0025] Figure 2 This is a rear view schematic diagram of the main structure of the static powder metering device proposed in this utility model;

[0026] Figure 3 This is a partial cross-sectional view of the storage tank of the static powder metering device proposed in this utility model;

[0027] Figure 4 The static metering device for powder proposed in this utility model Figure 3 Enlarged view of region A in the middle;

[0028] Figure 5 This is a top view schematic diagram of the electromagnetic sieve plate of the static powder metering device proposed in this utility model;

[0029] Figure 6 The static metering device for powder proposed in this utility model Figure 5 Enlarged schematic diagram of region B in the middle.

[0030] Legend:

[0031] 1. Storage tank; 2. Sealing cover; 3. Support base; 4. Metering valve; 5. Mounting frame; 6. Motor; 7. Worm gear; 8. Rotating shaft; 9. Agitator blade; 10. Worm wheel; 11. Eccentric wheel; 12. Contact block; 13. Ring frame; 14. Electromagnetic screen plate; 15. Fixed base; 16. Sliding rod; 17. Spring; 18. Positioning block; 19. Positioning seat; 20. Limiting rod; 21. Metering scale; 22. Receiving box; 23. Dust cover; 24. Elastic rubber ring one; 25. Elastic rubber ring two. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-3 The present invention provides an embodiment of a static powder metering device, comprising a storage tank 1, a sealing cover 2 on the top of the storage tank 1, and a feeding hopper on the top of the sealing cover 2, allowing powder raw materials to be fed into the storage tank 1 without separating the sealing cover 2 from the storage tank 1. A support base 3 is fixedly connected to the outer wall of the storage tank 1, and a metering valve 4 is fixedly connected to the bottom of the storage tank 1 via a pipe. The discharge port of the metering valve 4 is connected to a discharge pipe for discharging. A mounting frame 5 is fixedly connected to the outer wall of the storage tank 1, and a motor 6 is fixedly connected to the outer wall of the mounting frame 5. A worm gear 7 is fixedly connected to the output end of the motor 6, and the outer wall of the worm gear 7 is rotatably connected to the inner wall of the storage tank 1. A rotating shaft 8 is rotatably connected to the inner wall of the storage tank 1 via a bracket, and a stirring blade 9 is fixedly connected to the outer wall of the rotating shaft 8. A worm wheel 10 is fixedly connected to the outer wall of the rotating shaft 8, and the worm gear 7 meshes with the worm wheel 10. The worm gear 7 only meshes with the worm wheel 10. The area where the worm gear 10 contacts is provided with threaded teeth. An eccentric wheel 11 is fixedly connected to the outer wall of the worm 7. After the eccentric wheel 11 rotates one revolution, it can contact the contact block 12 and apply pressure to it. An annular frame 13 is provided inside the storage tank 1. An electromagnetic screen plate 14 is fixedly connected to the inner wall of the annular frame 13. The electromagnetic screen plate 14 is a passable electromagnet, and its surface has several sets of equidistantly distributed screen holes. The contact block 12 is fixedly connected to the bottom of the electromagnetic screen plate 14. A metering scale 21 is provided at the bottom of the support base 3. The metering scale 21 measures the discharged powder. A receiving box 22 is provided at the top of the metering scale 21. The receiving box 22 is used to receive the quantitatively discharged powder raw materials. The metering scale 21 and the metering valve 4 are preset in advance through the PLC controller, for example, by setting a metering specification value. After the metering scale 21 reaches the metering specification value, the metering valve 4 immediately closes and stops discharging.

[0034] Reference Figures 4-6The storage tank 1 is internally equipped with a positioning assembly, which includes a fixed base 15, a sliding rod 16, a spring 17, a positioning block 18, a positioning seat 19, and a limiting rod 20. Three sets of the positioning assembly are provided, equidistantly distributed around the center point of the storage tank 1. The outer wall of the fixed base 15 is fixedly connected to the inner wall of the storage tank 1. The sliding rod 16 is inserted into the inner wall of the fixed base 15. The sliding rod 16 consists of a set of round rods and a set of horizontal plates. The horizontal plate area is in contact with the inner wall of the fixed base 15, and the horizontal plate can pass through the cavity of the positioning seat 19 and contact the fixed base 15. The bottom end of the spring 17 is fixed to the horizontal plate, and the spring 17 is entirely sleeved on the sliding rod 16. Outside the round rod, the outer wall of the sliding rod 16 is slidably connected to the inner wall of the annular frame 13. A spring 17 is provided on the surface of the sliding rod 16. The top of the spring 17 is fixedly connected to the bottom of the electromagnetic screen plate 14. A positioning block 18 is rotatably connected to the top of the sliding rod 16. The outer wall of the positioning block 18 is magnetically connected to the inner surface of the positioning seat 19. The sliding rod 16 passes through the positioning seat 19. The top of the positioning seat 19 has a groove that forms a cross shape with the cavity. The groove area fits with the outer wall of the positioning block 18 and is magnetically connected. The bottom of the sealing cover 2 is fixedly connected to a limiting rod 20. When the sealing cover 2 closes the storage tank 1, the bottom ends of the three sets of limiting rods 20 are all attached to the top of the positioning block 18 to limit its movement.

[0035] Reference Figures 1-2 The outer wall of the receiving box 22 is provided with a dust cover 23. The dust cover 23 is narrow at the top and wide at the bottom. The bottom of the dust cover 23 is provided with an elastic rubber ring 25, which is fitted onto the outer wall of the receiving box 22. The top of the dust cover 23 is provided with an elastic rubber ring 24. The top of the dust cover 23 can be fitted over the discharge pipe and is constrained and fixed by the elastic rubber ring 24.

[0036] Working principle: With the sealing cover 2 open, insert each set of sliding rods 16 into the positioning seat 19 until the horizontal plate of the sliding rod 16 is inserted into the fixed seat 15. During descent, adjust the orientation of the positioning block 18 so that it is embedded in the groove of the positioning seat 19 and magnetically attracted to it. After the sliding rod 16 fixes the annular frame 13, the sealing cover 2 is closed, and each set of limiting rods 20 and positioning blocks 18 are in contact with each other. Then, close the sealing cover 2 again, put the narrower end of the dust cover 23 onto the discharge pipe, and use the elastic rubber ring 24 for fixation and constraint. Put the wider end of the dust cover 23 onto the receiving box 22, and use the elastic rubber ring 25 for fixation and constraint. Finally, the powder is put into the storage tank 1. At this time, the electromagnetic screen plate 14 is energized, and the motor 6 drives the worm gear 7. The worm gear 7 rotates, driving the eccentric wheel 11 to intermittently apply pressure to the contact block 12, causing the electromagnetic screen plate 14 to move upward under pressure. Combined with the force of gravity and the eccentric wheel 11, the electromagnetic screen plate 14 moves up and down, screening the powder. Metal impurities in the powder are adsorbed by the electromagnetic screen plate 14. At the same time, the worm gear 7 drives the meshing worm wheel 10 to rotate, allowing the stirring blade 9 to mix the powder. When multiple powders need to be mixed and metered, this helps to improve the mixing effect. The metering valve 4 discharges the powder quantitatively. As the powder enters the receiving box 22 from the discharge pipe, the dust cover 23 effectively prevents dust from flying. Finally, the powder is metered through the linkage of the metering scale 21 and the metering valve 4.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A static metering device for powder materials, comprising a storage tank (1), wherein a sealing cover (2) is provided on the top of the storage tank (1), a support base (3) is fixedly connected to the outer wall of the storage tank (1), and a metering valve (4) is fixedly connected to the bottom of the storage tank (1) through a pipe, characterized in that: The storage tank (1) is fixedly connected to the outer wall of the mounting frame (5), and the outer wall of the mounting frame (5) is fixedly connected to the motor (6). The output end of the motor (6) is fixedly connected to the worm gear (7). The inner wall of the storage tank (1) is rotatably connected to the rotating shaft (8) through the bracket. The outer wall of the rotating shaft (8) is fixedly connected to the stirring blade (9). The outer wall of the rotating shaft (8) is fixedly connected to the worm wheel (10). The outer wall of the worm gear (7) is fixedly connected to the eccentric wheel (11). The storage tank (1) is provided with an annular frame (13). The inner wall of the annular frame (13) is fixedly connected to the electromagnetic screen plate (14). The bottom of the electromagnetic screen plate (14) is fixedly connected to the contact block (12). The bottom of the support base (3) is provided with a weighing scale (21). The top of the weighing scale (21) is provided with a receiving box (22). The storage tank (1) is provided with an installation positioning component.

2. The static powder metering device according to claim 1, characterized in that: The outer wall of the worm (7) is rotatably connected to the inner wall of the storage tank (1), and the worm (7) meshes with the worm wheel (10).

3. The static powder metering device according to claim 1, characterized in that: The mounting and positioning assembly includes a fixed base (15), a sliding rod (16) is inserted into the inner wall of the fixed base (15), a spring (17) is provided on the surface of the sliding rod (16), a positioning block (18) is rotatably connected to the top of the sliding rod (16), the outer wall of the positioning block (18) is magnetically connected to the inner surface of the positioning base (19), and a limit rod (20) is fixedly connected to the bottom of the sealing cover (2).

4. The static powder metering device according to claim 3, characterized in that: The outer wall of the fixed seat (15) is fixedly connected to the inner wall of the storage tank (1), and the outer wall of the sliding rod (16) is slidably connected to the inner wall of the ring frame (13).

5. The static powder metering device according to claim 3, characterized in that: The top end of the spring (17) is fixedly connected to the bottom of the electromagnetic screen plate (14), and the sliding rod (16) passes through the positioning seat (19).

6. The static powder metering device according to claim 1, characterized in that: The outer wall of the receiving box (22) is provided with a dust cover (23), the bottom of the dust cover (23) is provided with an elastic rubber ring two (25), and the top of the dust cover (23) is provided with an elastic rubber ring one (24).

7. The static powder metering device according to claim 6, characterized in that: The elastic rubber ring 2 (25) is fitted onto the outer wall of the receiving box (22).

8. The static powder metering device according to claim 6, characterized in that: The dust cover (23) is designed to be narrower at the top and wider at the bottom.

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