Powder weighing device

Abstract

The utility model discloses a powder weighing device, which relates to the technical field of measuring hoppers and comprises a mounting frame and a hopper, a plurality of weighing sensors are fixedly mounted at the upper end of the mounting frame and are electrically connected with an external controller through cables, a plurality of supports are fixedly mounted on the outer side of the hopper, and the supports are electrically connected with the external controller through cables. A discharging valve is fixedly installed at the lower end of the hopper, a top cover is fixedly installed at the upper end of the hopper, and a feeding hopper is fixedly installed on one side of the upper end of the top cover. A gear motor is mounted on a top cover, a driven shaft is rotatably mounted at one end of the gear motor, and the output shaft and the driven shaft can rotate relatively by means of meshing connection of two transmission gears mounted on the outer sides of the output shaft and the driven shaft and are matched with two driving gears to drive a lifting rod to ascend and descend in a hopper. The conical cylinder at the lower end of the lifting rod can be controlled to impact the discharging opening of the hopper, the discharging speed of the discharging opening is increased, and then blocked powder is discharged.

Description

Technical Field

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

[0002] A powder metering hopper is a tool or unit used to measure the volume of powdery materials. It is commonly used in industrial production, such as concrete mixing plants and cement plants on construction sites. Powder metering hoppers are usually installed on mixers or conveyor belts to accurately measure the flow rate of powdery materials in order to ensure production efficiency and stability. Different powder metering hoppers have different measurement methods, such as gravity metering and volumetric metering.

[0003] Since this type of metering hopper measures powder, after the medium is conveyed into the hopper by a conveying device, a controller, in conjunction with a weighing sensor, monitors the initial weight and weight reduction of the medium in the hopper to control the amount of material discharged. When the powder is discharged from the metering hopper, it adheres to the hopper wall due to its adhesive properties. Additionally, if the powder contains a high moisture content, it may form a sticky substance during discharge. Furthermore, residual powder in the hopper may mix with newly added powder, causing blockages. Therefore, after the discharge port of the metering hopper becomes blocked, it is generally necessary to manually tap the metering hopper or use tools to break up the blockage. However, this method of clearing blockages is cumbersome and ineffective. Utility Model Content

[0004] The purpose of this invention is to provide a powder weighing device that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A powder weighing device includes a mounting frame and a hopper. Multiple weighing sensors are fixedly mounted on the upper end of the mounting frame. These weighing sensors are electrically connected to an external controller via cables. Multiple supports are fixedly mounted on the outer side of the hopper, with the lower ends of the supports fixedly mounted on corresponding weighing sensors. A discharge valve is fixedly mounted on the lower end of the hopper. A top cover is fixedly mounted on the upper end of the hopper. An inlet hopper is fixedly mounted on one side of the top cover. A geared motor is also fixedly mounted on the top cover located on the inlet hopper side. The geared motor is also electrically connected to an external controller via cables. An output shaft is movably mounted on one end of the geared motor. A driven shaft is movably mounted on the geared motor located on one side of the output shaft. A transmission gear and a drive gear are fixedly mounted on the outer side of the output shaft. A driven shaft and a transmission gear are also fixedly mounted on the outer side of the driven shaft. A lifting rod is movably mounted between the two drive gears.

[0007] As a further preferred embodiment of this utility model, a fixing seat is fixedly installed at the center of the upper end of the top cover, and an insertion hole is opened in the fixing seat. The top cover located at the lower end of the fixing seat also has an insertion hole, and the inner diameter of the insertion hole is the same as the width of the lifting rod.

[0008] As a further preferred embodiment of this utility model, one end of the geared motor is fixedly mounted with a bearing housing, and the other end of the driven shaft is rotatably mounted in the bearing housing.

[0009] As a further preferred embodiment of this utility model, the two transmission gears are respectively inserted through the outer side of the output shaft and the driven shaft, and the two drive gears are also respectively inserted through the outer side of the output shaft and the driven shaft. The outer side of the output shaft and the driven shaft located between the corresponding transmission gear and the drive gear are respectively fitted with sleeves. The output shaft located on one side of one drive gear is threaded with a nut, and the driven shaft located on the other side of the drive gear is also threaded with a nut.

[0010] As a further preferred embodiment of this utility model, the lifting rod has a toothed groove on one side relative to the drive gear, the lifting rod is inserted into the insertion hole, and the lower end of the lifting rod is located in the hopper, and the toothed groove is meshed with the corresponding drive gear.

[0011] As a further preferred embodiment of this utility model, a cone is fixedly installed at the lower end of the lifting rod, and both the upper and lower surfaces of the cone are inclined surfaces, and the cone is located at the discharge port at the lower end of the hopper.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The powder weighing device of this utility model has a geared motor installed on the top cover, and a driven shaft is rotatably installed at one end of the geared motor. The output shaft is connected to two transmission gears installed on the outside of the driven shaft, which allows the output shaft and the driven shaft to rotate relative to each other. In conjunction with the two drive gears, the lifting rod is driven to rise and fall in the hopper. This controls the cone at the lower end of the lifting rod to impact the discharge port of the hopper and increase the discharge speed of the discharge port, thereby allowing the blocked powder to be discharged. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the hopper of this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is an exploded view of the geared motor structure of this utility model.

[0018] In the diagram: 1. Mounting frame; 2. Hopper; 3. Weighing sensor; 4. Support; 5. Top cover; 6. Feed hopper; 7. Gear motor; 8. Fixed base; 9. Output shaft; 10. Bearing housing; 11. Driven shaft; 12. Transmission gear; 13. Drive gear; 14. Lifting rod; 15. Sleeve; 16. Nut; 17. Gear groove; 18. Conical cylinder; 19. Insertion hole. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-4 As shown, the present invention provides a powder weighing device, including a mounting frame 1 and a hopper 2. Multiple weighing sensors 3 are fixedly mounted on the upper end of the mounting frame 1. The weighing sensors 3 are electrically connected to an external controller via cables. Multiple supports 4 are fixedly mounted on the outer side of the hopper 2. The lower ends of the supports 4 are fixedly mounted on corresponding weighing sensors 3. A discharge valve is fixedly mounted on the lower end of the hopper 2. A top cover 5 is fixedly mounted on the upper end of the hopper 2. A feed hopper 6 is fixedly mounted on one side of the top cover 5. A reduction motor 7 is also fixedly mounted on the top cover 5 located on the side of the feed hopper 6. The reduction motor 7 is also electrically connected to an external controller via cables. An output shaft 9 is movably mounted on one end of the reduction motor 7. A driven shaft 11 is also movably mounted on the side of the reduction motor 7 located on the output shaft 9. A transmission gear 12 and a drive gear 13 are fixedly mounted on the outer side of the output shaft 9. A driven shaft 11 and a transmission gear 12 are also fixedly mounted on the outer side of the driven shaft 11. A lifting rod 14 is movably mounted between the two drive gears 13.

[0021] A fixed base 8 is fixedly installed at the center of the upper end of the top cover 5. An insertion hole 19 is opened in the fixed base 8. The top cover 5 located at the lower end of the fixed base 8 also has an insertion hole 19. The inner diameter of the insertion hole 19 is the same as the width of the lifting rod 14. An insertion hole 19 with the same width as the lifting rod 14 is opened in the fixed base 8 and at the center of the top cover 5, which can ensure the stable vertical and radial movement of the lifting rod 14.

[0022] A bearing housing 10 is fixedly installed at one end of the geared motor 7, and the driven shaft 11 is rotatably installed in the bearing housing 10 at one end. Two transmission gears 12 are respectively inserted through the output shaft 9 and the driven shaft 11 on the outside. Two drive gears 13 are also respectively inserted through the output shaft 9 and the driven shaft 11 on the outside. Sleeves 15 are respectively fitted on the outside of the output shaft 9 and the driven shaft 11 located between the corresponding transmission gears 12 and drive gears 13. A nut 16 is threadedly connected to the output shaft 9 on one side of one drive gear 13, and a nut 16 is also threadedly connected to the driven shaft 11 on the other side of the drive gear 13. By setting a driven shaft 11 rotatably installed through the bearing housing 10 at one end of the geared motor 7, and installing transmission gears 12 and drive gears 13 on the outside of the output shaft 9 and the driven shaft 11 respectively, the output shaft 9 can drive the driven shaft 11 to rotate synchronously, and the lifting rod 14 can be stably clamped and meshed with the two drive gears 13, which is beneficial to improving the stability of the vertical and radial movement of the lifting rod 14.

[0023] The lifting rod 14 has a toothed groove 17 on one side relative to the drive gear 13. The lifting rod 14 is inserted into the insertion hole 19, and the lower end of the lifting rod 14 is located in the hopper 2. The toothed groove 17 is meshed with the corresponding drive gear 13. The two drive gears 13 are respectively meshed with the toothed groove 17 on one side of the lifting rod 14, which can drive the lifting rod 14 to rise and fall. A cone 18 is fixedly installed at the lower end of the lifting rod 14. The upper and lower surfaces of the cone 18 are both inclined. The cone 18 is located at the discharge port position at the lower end of the hopper 2. The lifting rod 14 drives the cone 18 to move up and down together at the discharge port position at the lower end of the hopper 2, which can increase the discharge port area at the lower end of the hopper 2 and disperse the blocked powder.

[0024] It should be noted that this utility model is a powder weighing device. When the unloading speed and unloading amount of hopper 2 are detected to be lower than normal values, the control program of the controller starts the reduction motor 7. Then, the output shaft 9 at one end of the reduction motor 7 rotates, and the output shaft 9 drives the external transmission gear 12 of the transmission gear 12 to rotate. This transmission gear 12 simultaneously meshes with the transmission gear 12 on the outside of the driven shaft 11, so that the two transmission gears 12 rotate relative to each other. In turn, the transmission gear 12 on the outside of the driven shaft 11 synchronously drives one end of the driven shaft 11 to rotate in the bearing seat 10, so that the output shaft 9 and the driven shaft 11 synchronously drive... The drive gear 13 on the outer side meshes and rotates in the tooth groove 17 on one side of the lifting rod 14, which moves the lifting rod 14 up and down in the insertion hole 19. Then, the tooth groove 17 drives the lower cone 18 to lift from the discharge port position at the lower end of the hopper 2, thereby expanding the discharge space at the lower end of the hopper 2. At the same time, it disperses the powder accumulated at the discharge port position at the lower end of the hopper 2, thus preventing the discharge of powder in the hopper 2 from being blocked in conjunction with the discharge valve at the lower end of the hopper 2. Then, the output shaft 9 at one end of the reduction motor 7 rotates in the opposite direction, and together with the transmission gear 12, driven shaft 11, drive gear 13, and lifting rod 14, drives the cone 18 to reset.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A powder weighing device, comprising a mounting frame (1) and a hopper (2), wherein a plurality of weighing sensors (3) are fixedly mounted on the upper end of the mounting frame (1), the weighing sensors (3) are electrically connected to an external controller via cables, a plurality of supports (4) are fixedly mounted on the outer side of the hopper (2), the lower ends of the supports (4) are fixedly mounted on the corresponding weighing sensors (3), and a discharge valve is fixedly mounted on the lower end of the hopper (2), characterized in that: The hopper (2) upper end is fixedly installed with a top cover (5), one side of the top cover (5) upper end is fixedly installed with an inlet hopper (6), the top cover (5) on one side of the inlet hopper (6) is also fixedly installed with a speed reducer motor (7), the speed reducer motor (7) is also electrically connected with an external controller through a cable, one end of the speed reducer motor (7) is movably installed with an output shaft (9), the speed reducer motor (7) on one side of the output shaft (9) is also movably installed with a driven shaft (11), the output shaft (9) outer side is fixedly installed with a transmission gear (12) and a drive gear (13), the driven shaft (11) outer side is also fixedly installed with a driven shaft (11) and a transmission gear (12), two drive gears (13) are also movably installed with a lifting rod (14).

2. A powder weighing device according to claim 1, characterized in that: The top cover (5) upper end center position is fixedly installed with a fixed seat (8), the fixed seat (8) is provided with a bushing (19) in the inside, the top cover (5) lower end of the fixed seat (8) is also provided with a bushing (19), the bushing (19) inner diameter is equal to the width of the lifting rod (14).

3. A powder weighing apparatus according to claim 2, wherein: The speed reducer motor (7) one end is fixedly installed with a bearing seat (10), the driven shaft (11) one end is rotatably installed in the bearing seat (10).

4. A powder weighing apparatus according to claim 3, wherein: Two transmission gears (12) are respectively inserted on the outer side of the output shaft (9) and the driven shaft (11), two drive gears (13) are also respectively inserted on the outer side of the output shaft (9) and the driven shaft (11), the outer side of the output shaft (9) and the driven shaft (11) between the corresponding transmission gear (12) and the drive gear (13) is respectively sleeved with a sleeve (15), the output shaft (9) on one side of one of the drive gears (13) is threadedly connected with a nut (16), the driven shaft (11) on one side of the other drive gear (13) is also threadedly connected with a nut (16).

5. A powder weighing apparatus according to claim 4, wherein: The lifting rod (14) is provided with a tooth slot (17) on one side relative to the drive gear (13), the lifting rod (14) is inserted in the bushing (19), and the lower end of the lifting rod (14) is located in the hopper (2), and the tooth slot (17) is engaged with the corresponding drive gear (13).

6. A powder weighing apparatus according to claim 5, wherein: The lower end of the lifting rod (14) is fixedly installed with a tapered cylinder (18), and the upper surface and the lower surface of the tapered cylinder (18) are both inclined surfaces, and the tapered cylinder (18) is located at the discharge port position of the hopper (2) lower end.

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