Powder supply quantity controller

Abstract

A powder feeding amount controller comprises a belt, a discharging pipe and a movable scraper, the top of the discharging pipe is a feeding end, the bottom of the discharging pipe is arranged on the belt, an opening in the bottom of the discharging pipe is sealed through the belt, and a discharging opening communicated with the opening in the bottom of the discharging pipe is formed in the side, facing the discharging end of the belt, of the discharging pipe. A movable scraping plate is arranged at the position of the discharging port, a guide mechanism is installed at the position of the discharging port of the discharging pipe, the movable scraping plate is installed on the guide mechanism in a sliding mode, and the movable scraping plate moves up and down under the action of the guide mechanism to achieve opening and closing of the discharging port. And a driving device for driving the movable scraping plate to move along the guide mechanism and a pointer mechanism for displaying the opening height of the discharge port are further mounted on the outer side of the discharge pipe. According to the utility model, more accurate supply of powder raw materials can be realized, the precision of the proportion of firecracker production medicines is improved, and the finished product quality of firework and firecracker products is improved.

Description

Technical Field

[0001] This utility model relates to the field of raw material supply quantity adjustment and control technology, and in particular to a powder supply quantity controller. Background Technology

[0002] In the existing firecracker production industry, the control of the supply of black powder raw materials in black powder filling equipment is a very important part of firecracker production. If the raw material supply control ratio is out of balance, it will lead to a significant decline in product quality. In severe cases, product scrapping will cause incalculable economic losses. At present, most powder raw material supply control is achieved by setting two layers of discharge ports, inner and outer, below the raw material hopper. By manually rotating the direction of the outer discharge port, the supply port formed between it and the inner discharge port is enlarged or reduced. The supply of powder raw materials is adjusted by the width of the supply port.

[0003] However, in the actual production of firecrackers, this existing method of adjusting the feed rate has revealed many serious problems, and its effectiveness is far from ideal. From an operational perspective, manually rotating the outer discharge port has significant limitations. When rotating the outer discharge port, operators find it difficult to precisely control the amount of force applied or the angle of rotation. In this situation, operators can only rely on their long-accumulated experience to roughly judge the feed rate by visually estimating the width of the feed port. However, this experience-based and visually-based method is extremely inaccurate. To obtain a feed rate close to the formula, multiple trials are often required. Each trial requires weighing the collected raw materials, and repeated adjustments are needed to barely approximate the required feed rate. This undoubtedly greatly increases production time and labor costs, and even then, it is difficult to achieve precise feed rate control.

[0004] Secondly, when the feed inlet narrows to a certain extent due to adjustments, the powder raw materials, during their passage through the inlet, experience a "gap" phenomenon due to the inherent characteristics of the powder raw materials, such as the interaction of friction and flowability between particles. This causes some raw materials to support each other at the feed inlet, forming a gap structure and preventing them from passing through smoothly. This gap phenomenon leads to an unstable amount of raw materials entering the charging stage.

[0005] Therefore, in order to improve the accuracy of powder feeding in the fireworks and firecrackers industry, it is urgent to design a powder raw material supply control mechanism that is easy to operate and has precise control. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies by providing a powder feeder that is easy to operate and can achieve precise powder raw material feeding.

[0007] To achieve the above objectives, this utility model first proposes a powder feeding quantity controller, including a belt, a discharge pipe, and a movable scraper. The top of the discharge pipe is the inlet end, and the bottom of the discharge pipe is placed on the belt, so that the opening at the bottom of the discharge pipe is sealed by the belt. A discharge port is opened on the side of the discharge pipe facing the belt, which communicates with the opening at the bottom of the discharge pipe. A movable scraper matching the size of the discharge port is set at the location of the discharge port. A guide mechanism is installed at the discharge port of the discharge pipe. The movable scraper is slidably installed on the guide mechanism. The movable scraper moves up and down under the action of the guide mechanism to open and close the discharge port. In the closed state, the movable scraper moves to the lowest position, and the bottom of the movable scraper is flush with the bottom surface of the discharge pipe. In the open state, the distance between the bottom edge of the movable scraper and the bottom surface of the discharge pipe is adjusted by controlling the movement position of the movable scraper, thereby controlling the thickness of the discharge. A drive device for driving the movable scraper to move along the guide mechanism and a pointer mechanism for displaying the opening height of the discharge port in real time are also installed on the outside of the discharge pipe.

[0008] In this embodiment, the guiding mechanism includes an upper guide plate, side support plates, and a guide rail. Side support plates are fixed on the outer wall of the discharge pipe on both sides of the discharge port, arranged axially. An upper guide plate is fixed between the two side support plates on the upper side of the discharge port. The upper guide plate is arranged parallel to the movable scraper. The two side support plates and the upper guide plate together form a door frame around the discharge port. The inner side of the two side support plates is provided with a guide groove arranged along the moving direction of the movable scraper. The outer side of the upper guide rail is provided with a guide edge on the extension line of the guide groove. The guide groove and the guide edge constitute the guide rail. The movable scraper is slidably installed in the guide rail.

[0009] In this embodiment, the driving device includes a rotating shaft, a rack, and gears. Multiple racks are fixed on the movable scraper and are arranged along the moving direction of the movable scraper. The rotating shaft is arranged perpendicular to the racks and is rotatably mounted on the outside of the discharge pipe. Multiple gears are coaxially fixed on the rotating shaft. The number of gears matches the racks and their positions correspond one-to-one. The gears mesh with the corresponding racks. The rotating shaft is driven to rotate by a power device.

[0010] In this embodiment, the power unit includes a reducer and a knob. One end of the rotating shaft is connected to the output end of the reducer, and a knob is installed on the input end of the reducer.

[0011] In this embodiment, the power unit includes a reducer and a servo motor. One end of the rotating shaft is connected to the output end of the reducer, and the servo motor is installed on the input end of the reducer.

[0012] In this embodiment, the pointer mechanism includes a dial and a pointer. The dial is fixed on a side support plate on one side and is arranged perpendicular to the rotating shaft. A support plate is fixed on the other side support plate, and the support plate is arranged parallel to the dial. One end of the rotating shaft is movably mounted at the center of the dial, and the other end is movably mounted on the support plate. The graduations on the dial are set on the outward side of the dial. The pointer is set on the side of the dial where the graduations are located, and the pointer is fixed on the rotating shaft.

[0013] In this embodiment, the inner diameter of the discharge pipe matches the outer diameter of the discharge port of the hopper. A set screw is also threaded onto the side wall of the discharge pipe on the side of the feed end. The set screw is arranged radially along the discharge pipe and is used to lock the discharge pipe to the hopper.

[0014] In this embodiment, multiple set screws are provided, and a handle for easy rotation of the set screw is fixed on the side of the set screw that extends out of the outer wall of the discharge tube.

[0015] With the above structure, this utility model has the following advantages:

[0016] 1. The discharge port of this device is located on the side of the discharge pipe, and the bottom of the discharge pipe is placed on the belt, so that the opening at the bottom of the discharge pipe is sealed by the belt. By setting a movable scraper on the discharge port, the size of the discharge port can be adjusted by adjusting the distance between the movable scraper and the belt. When the belt is running, it will drive the powder in the discharge pipe to move. When the powder passes through the discharge port, it is restricted by the movable scraper. The movable scraper scrapes off the excess powder on the belt, thereby controlling the powder supply. At the same time, while adjusting the movable scraper, the height of the movable scraper from the bottom of the discharge pipe is displayed in real time by the pointer mechanism, so as to achieve precise adjustment of the powder supply.

[0017] 2. This device utilizes a rack and pinion transmission structure, allowing for precise adjustment of the position of the movable scraper via the rotation of the shaft. It is also equipped with a pointer mechanism consisting of a dial and a pointer. The pointer moves synchronously with the shaft, enabling real-time monitoring of the movable scraper's movement distance. The display can be converted into an intuitive representation of the powder raw material supply amount. The dial scale can also directly display the converted supply value, facilitating operators' intuitive understanding of the adjustment amount and improving the accuracy of material supply and ease of operation.

[0018] 3. The drive unit of this device can be connected to a knob to control the movable scraper by manual rotation, meeting general operation needs; or it can be connected to a servo motor. On the one hand, it can achieve precise control of the rotation angle of the shaft, which is suitable for scenarios with higher requirements for the accuracy of the feeding amount, thus improving the applicability of the device. On the other hand, by using the servo motor in conjunction with the online weighing system, it can achieve the purpose of digital real-time control and management of the formula ratio.

[0019] 4. The inner diameter of the discharge pipe of this device matches the outer diameter of the discharge port of the hopper, and the discharge pipe and the hopper are locked together by the set screws set along the radial direction of the discharge pipe. Multiple set screws can be set to enhance the connection stability. The handles fixed at the protruding ends of the screws are convenient for rotation operation, making the installation process simple and convenient, and the connection firm and reliable.

[0020] In summary, compared with existing powder feeding control mechanisms, this device can achieve more precise powder raw material supply, improve the accuracy of the drug ratio in firecracker production, and improve the finished product quality of fireworks and firecrackers. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the present invention in use.

[0022] Figure 2 The three-dimensional representation of this utility model Figure 1 .

[0023] Figure 3 The three-dimensional representation of this utility model Figure 2 .

[0024] Figure 4 This is an exploded view of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure of this utility model in the state of being connected to a belt.

[0026] In the attached diagram: 1. Powder feed metering controller; 11. Discharge pipe; 111. Upper guide plate; 112. Side support plate; 113. Guide groove; 114. Guide edge; 12. Movable scraper; 121. Rack; 13. Rotating shaft; 131. Gear; 14. Reducer; 15. Knob; 16. Dial; 17. Pointer; 18. Support plate; 19. Set screw; 2. Hopper; 3. Conveyor belt. Detailed Implementation

[0027] 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.

[0028] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0029] like Figures 1 to 5 As shown, a powder feeding metering controller includes a belt 3, a discharge pipe 11, and a movable scraper 12. The top of the discharge pipe 11 is the inlet end, and the bottom surface of the discharge pipe 11 is parallel to the belt 3. The bottom of the discharge pipe 11 is placed on the belt 3, so that the opening at the bottom of the discharge pipe 11 is sealed by the belt 3. A discharge port is opened on the side of the discharge pipe 11 facing the belt 3, communicating with the opening at the bottom of the discharge pipe 11. The size of the discharge port matches that of the movable scraper 12. A guide mechanism is installed at the discharge port of the discharge pipe 11, and the movable scraper 12 is installed on the guide mechanism, so that the movable scraper 12 is positioned at the discharge port. Furthermore, the movable scraper 12 forms an angle α with the surface where the discharge port is located. Under the action of the guide mechanism, the movable scraper 12 moves up and down to open and close the discharge port. The bottom edge of the movable scraper 12 is parallel to the bottom surface of the discharge pipe 11. In the closed state, the movable scraper 12 moves to the lowest position, and the bottom of the movable scraper 12 is flush with the bottom surface of the discharge pipe 11. In the open state, the thickness of the discharge is adjusted by adjusting the distance between the bottom edge of the movable scraper 12 and the bottom surface of the discharge pipe 11. The discharge pipe 11 is also equipped with a drive device that drives the movable scraper 12 to move along the guide mechanism and a pointer mechanism that displays the opening height of the discharge port.

[0030] In use, the discharge pipe 11 is installed on the discharge port of the hopper 2, and the bottom of the discharge pipe 11 is placed on the belt 3, so that the belt 3 seals the bottom opening of the discharge pipe 11. Then, the movable scraper 12 is adjusted, and the distance between the bottom edge of the movable scraper 12 and the bottom surface of the discharge pipe 11 is observed through the pointer mechanism to reach the set height. Then, the belt 3 is turned on. The operation of the belt 3 will drive the powder in the discharge pipe 11 to move. When the powder passes through the discharge port, it is restricted by the movable scraper 12. The movable scraper 12 scrapes off the excess powder on the belt 3, thereby achieving the purpose of precise control of powder supply.

[0031] Furthermore, the guiding mechanism includes an upper guide plate 111, side support plates 112, and a guide rail. Side support plates 112 are fixed on the outer wall of the discharge pipe 11 on both sides of the discharge port, arranged axially. An upper guide plate 111 is fixed between the two side support plates 112 on the upper side of the discharge port. The upper guide plate 111 is arranged parallel to the movable scraper 12. The two side support plates 112 and the upper guide plate 111 are combined to form a door frame around the discharge port. The inner side of the two side support plates 112 is provided with a guide groove 113 arranged along the moving direction of the movable scraper 12. The outer side of the upper guide rail 113 is provided with a guide edge 114 on the extension line of the guide groove. The guide groove and the guide edge constitute the guide rail 113. The movable scraper 12 is slidably installed in the guide rail 113.

[0032] The driving device includes a rotating shaft 13, a rack 121, and gears 131. Multiple racks 121 are fixed on a movable scraper 12 and are arranged along the moving direction of the movable scraper 12. The rotating shaft 13 is arranged perpendicular to the racks 121 and is rotatably mounted on the outside of the discharge pipe 11. Multiple gears 131 are coaxially fixed on the rotating shaft 13. The number of gears 131 matches the number of racks 121 and their positions correspond one-to-one. The gears 131 mesh with the corresponding racks 121. One end of the rotating shaft 13 is connected to the output end of a reducer 14. A knob 15 or a servo motor is installed on the input end of the reducer 14. The rotation of the gears 131 is controlled by the knob 15. The reducer 14 can improve the control accuracy. Furthermore, the rotation of the gears 131 can be controlled by the servo motor, which can not only achieve precise control of the rotation angle of the rotating shaft 13, but also be used in conjunction with an online weighing system to achieve the purpose of digital real-time control and management of the formula ratio.

[0033] With the above structure, the movable scraper 12 is matched with the discharge pipe 11. The movable scraper 12 slides stably in the guide rail 113 by the cooperation of the rack 121 and the gear 131, so that the movable scraper 12 can move with the rotation of the rotating shaft 13, and the amount of powder raw material supplied can be controlled by adjusting the height of the discharge port.

[0034] The pointer mechanism includes a dial 16 and a pointer 17. The dial 16 is fixed on a side support plate 112 on one side and is arranged perpendicular to the rotating shaft 13. A support plate 18 is fixed on the other side support plate 112, and the support plate 18 is arranged parallel to the dial 16. One end of the rotating shaft 13 is movably mounted on the center of the dial 16, and the other end is movably mounted on the support plate 18. The scale on the dial 16 is set on the outward-facing side of the dial 16. The pointer 17 is located on the side where the scale on the dial 16 is located, and the pointer 17 is fixed on the rotating shaft 13. The pointer 17 moves synchronously with the rotating shaft 13, so that the distance traveled by the movable scraper 12 can be monitored in real time while the movable scraper 12 moves. By switching, the amount of powder raw material supplied can be directly known. Of course, the scale on the dial 16 can also directly display the powder supply value after the switch, so that the operator can more intuitively understand the amount adjusted.

[0035] like Figure 1 As shown, the inner diameter of the discharge pipe 11 matches the outer diameter of the discharge port of the hopper 2. A set screw 19 is threadedly connected to the side wall of the discharge pipe 11 on the side of the feed end. The set screw 19 is arranged radially along the discharge pipe 11. The discharge pipe 11 and the hopper 2 can be locked by the set screw 19. Furthermore, multiple set screws 19 can be provided, and a handle for easy rotation of the set screw 19 is fixed on the side of the set screw 19 that extends out of the outer wall of the discharge pipe 11.

[0036] In use, the discharge pipe 11 is fitted onto the discharge port at the lower end of the hopper 2 and locked with the set screw 19. Simultaneously, the bottom of the discharge pipe 11 is placed on the belt 3, sealing the bottom opening of the discharge pipe 11. This completes the installation of the device. Then, adjust the knob 15. The force of rotating the knob 15 drives the rotating shaft 13 to rotate slowly through the reducer 14, thereby moving the movable scraper 12. While adjusting the knob 15, observe the pointer 17 of the pointer mechanism. When the pointer 17 reaches the set scale, it indicates that the distance between the bottom edge of the movable scraper 12 and the bottom surface of the discharge pipe 11 has reached the set height. At this point, turn on the belt 3. The operation of the belt 3 will move the powder inside the discharge pipe 11. When the powder passes through the discharge port, it is restricted by the movable scraper 12, which scrapes off excess powder from the belt 3, thus achieving precise control of the powder supply.

[0037] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A powder feeding metering controller, characterized in that, The device includes a belt, a discharge pipe, and a movable scraper. The top of the discharge pipe is the inlet, and the bottom of the discharge pipe rests on the belt, sealing the opening at the bottom of the discharge pipe. A discharge port, communicating with the opening at the bottom of the discharge pipe, is located on the side of the discharge pipe facing the belt. A movable scraper, matching the size of the discharge port, is positioned at the discharge port. A guide mechanism is installed at the discharge port, and the movable scraper is slidably mounted on the guide mechanism. Under the action of the guide mechanism, the movable scraper moves up and down, opening and closing the discharge port. In the closed state, the movable scraper is at its lowest position, with its bottom flush with the bottom surface of the discharge pipe. In the open state, the distance between the bottom edge of the movable scraper and the bottom surface of the discharge pipe is adjusted by controlling the movement of the movable scraper, thereby controlling the thickness of the discharged material. A drive device for moving the movable scraper along the guide mechanism and a pointer mechanism for displaying the opening height of the discharge port in real time are also installed on the outside of the discharge pipe.

2. The powder feeding metering controller according to claim 1, characterized in that: The guiding mechanism includes an upper guide plate, side support plates, and a guide rail. Side support plates are fixed on the outer wall of the discharge pipe on both sides of the discharge port, arranged axially. An upper guide plate is fixed between the two side support plates on the upper side of the discharge port. The upper guide plate is arranged parallel to the movable scraper. The two side support plates and the upper guide plate together form a door frame around the discharge port. The inner side of the two side support plates is provided with a guide groove arranged along the moving direction of the movable scraper. The outer side of the upper guide rail is provided with a guide edge on the extension line of the guide groove. The guide groove and the guide edge constitute the guide rail. The movable scraper is slidably installed in the guide rail.

3. The powder feeding metering controller according to claim 2, characterized in that: The driving device includes a rotating shaft, a rack, and gears. Multiple racks are fixed on the movable scraper and are arranged along the moving direction of the movable scraper. The rotating shaft is arranged perpendicular to the racks and is rotatably mounted on the outside of the discharge pipe. Multiple gears are coaxially fixed on the rotating shaft. The number of gears matches the racks and their positions correspond one-to-one. The gears mesh with the corresponding racks. The rotating shaft is driven to rotate by a power device.

4. The powder feeding metering controller according to claim 3, characterized in that: The power unit includes a reducer and a knob. One end of the rotating shaft is connected to the output end of the reducer, and a knob is installed on the input end of the reducer.

5. The powder feeding metering controller according to claim 3, characterized in that: The power unit includes a reducer and a servo motor. One end of the rotating shaft is connected to the output end of the reducer, and the servo motor is installed on the input end of the reducer.

6. The powder feeding metering controller according to claim 3, characterized in that: The pointer mechanism includes a dial and a pointer. The dial is fixed on a side support plate on one side and is arranged perpendicular to the rotating shaft. A support plate is fixed on the other side support plate, and the support plate is arranged parallel to the dial. One end of the rotating shaft is movably mounted at the center of the dial, and the other end is movably mounted on the support plate. The scale on the dial is set on the outward side of the dial. The pointer is set on the side of the dial where the scale is located, and the pointer is fixed on the rotating shaft.

7. The powder feeding metering controller according to any one of claims 1 to 6, characterized in that: The inner diameter of the discharge pipe matches the outer diameter of the discharge port of the hopper. A set screw is also threaded onto the side wall of the discharge pipe on the side of the feed end. The set screw is arranged radially along the discharge pipe and is used to lock the discharge pipe to the hopper.

8. The powder feeding metering controller according to claim 7, characterized in that: Multiple set screws are provided, and a handle for easy rotation of the set screw is fixed on the side of the set screw that extends out of the outer wall of the discharge tube.

Images