Powder material discharging control mechanism

Abstract

The utility model provides a powder material blanking control mechanism which comprises a stock bin arranged above a belt conveyor, the bottom of the stock bin is sequentially connected with a blanking barrel, a rotating shaft which is driven by a servo motor to rotate is arranged on the blanking barrel in a penetrating and rotating mode, the rotating shaft is arranged on a pair of bearings fixedly arranged on the blanking barrel in a rotating mode, and a material blocking plate is arranged on the rotating shaft. The belt conveyor comprises a rack, a driving roller and a driven roller are rotationally arranged on the rack, a conveying belt is wound on the driving roller and the driven roller, and the driving roller is driven by a driving motor to rotate; a pair of mounting racks is arranged on the rack, and a plurality of groups of photoelectric sensors which are positioned at different heights and are used for measuring the height of materials are arranged between the pair of mounting racks. According to the powder material discharging control mechanism, the height of materials on the belt conveyor can be monitored in real time, the falling speed of the materials from the discharging barrel is adjusted by controlling rotation of the servo motor, and it is guaranteed that the materials cannot be accumulated too high or even fall off in the conveying process.

Description

Technical Field

[0001] This utility model belongs to the field of construction machinery technology, specifically relating to a powder material feeding control mechanism. Background Technology

[0002] The production of concrete mixtures for construction or roads often requires feeding powdered materials into a mixer via a conveyor belt. Due to the time difference between feeding and unloading in the mixer, material falling from the discharge container onto the conveyor belt can easily accumulate or even overflow during transport, affecting subsequent production or construction progress and potentially damaging the conveyor belt itself, shortening its service life. Furthermore, material accumulating on the conveyor belt may fall directly to the ground, forming piles of waste, and some may drift into the air, creating dust. This not only wastes materials but also pollutes the surrounding environment. Cleaning up spilled or leaked material also requires manpower, resources, and time, further increasing costs.

[0003] Therefore, a material feeding control mechanism needs to be designed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a powder material feeding control mechanism, the specific solution of which is as follows:

[0005] A powder material feeding control mechanism includes a hopper positioned above a belt conveyor, with a feeding cylinder connected sequentially to the bottom of the hopper. A rotating shaft driven by a servo motor is rotatably mounted through the feeding cylinder. The rotating shaft is rotatably mounted on a pair of bearings fixed to the feeding cylinder. A baffle plate for blocking or opening the feeding cylinder is provided on the rotating shaft. The belt conveyor includes a frame, with a drive roller and a driven roller rotatably mounted on the frame. A conveyor belt is wound around the drive roller and the driven roller, and the drive roller is driven to rotate by a drive motor. A pair of mounting frames are provided on the frame, and multiple sets of photoelectric sensors at different heights for measuring material height are provided between the pair of mounting frames. The servo motor, drive motor, and photoelectric sensors are electrically connected to a controller.

[0006] Based on the above, the feed cylinder is provided with flange cover one and flange cover two for the two bearings respectively, and flange cover two is provided with a sealing ring for the rotating shaft.

[0007] Based on the above, the bearing model is 6208-2RS contact double-sealed deep groove ball bearing.

[0008] Based on the above, the bearing is filled with No. 4 white lithium-based grease, and the amount of grease is 1 / 2 to 2 / 3 of the effective space of the bearing.

[0009] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model has the following advantages:

[0010] The powder material feeding control mechanism provided by this utility model can monitor the height of the material on the belt conveyor in real time after setting the speed of the belt conveyor, and adjust the speed of the material falling from the feeding cylinder by controlling the rotation of the servo motor, so as to ensure that the material will not accumulate too high or even fall off during the conveying process. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the lower feed cylinder in the closed state in this utility model.

[0013] Figure 3 This is a schematic diagram of the lower feed cylinder in the open state of this utility model.

[0014] In the diagram: 1. Hopper; 2. Feeding cylinder; 3. Rotating shaft; 4. Baffle plate; 5. Servo motor; 6. Bearing; 7. Flange cover one; 8. Flange cover two; 9. Sealing ring; 10. Belt conveyor; 10-1. Frame; 10-2. Mounting bracket; 10-3. Photoelectric sensor; 11. Controller. Detailed Implementation

[0015] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0016] Example 1

[0017] like Figure 1-3 As shown, this utility model provides a powder material feeding control mechanism, including a hopper 1 disposed above a belt conveyor 10, a feeding cylinder 2 connected sequentially to the bottom of the hopper 1, a rotating shaft 3 driven by a servo motor 5 passing through and rotatably mounted on the feeding cylinder 2, the rotating shaft 3 being rotatably mounted on a pair of bearings 6 fixed on the feeding cylinder 2, and a baffle plate 4 for blocking or opening the feeding cylinder 2 on the rotating shaft 3; the belt conveyor 10 includes a frame 10-1, on which a drive roller and a driven roller are rotatably mounted, and a conveyor belt is wound around the drive roller and the driven roller, the drive roller being driven to rotate by a drive motor; a pair of mounting frames 10-2 are provided on the frame 10-1, and multiple sets of photoelectric sensors 10-3 at different heights for measuring the height of the material are provided between the pair of mounting frames 10-2; the servo motor 5, the drive motor, and the photoelectric sensors 10-3 are electrically connected to a controller 11.

[0018] The feed cylinder 2 is provided with flange cover 7 and flange cover 8 respectively for the two bearings 6, and the flange cover 8 is provided with a sealing ring 9 for the rotating shaft 3.

[0019] The bearing 6 mentioned above is model 6208-2RS contact type double seal deep groove ball bearing 6.

[0020] The bearing 6 is filled with No. 4 white lithium-based grease, and the amount of grease is 1 / 2 to 2 / 3 of the effective space of the bearing 6.

[0021] The specific working principle of this utility model is as follows: First, the speed of the drive motor and the material height warning value are set by the controller 11. Then, the drive motor is started and the servo motor 5 is controlled to rotate to adjust the position of the baffle and thus regulate the material feeding speed. The photoelectric sensor 10-3 monitors the material height in real time. When the material height reaches the height warning value and continues for 10-15 seconds, the controller 11 controls the rotation of the servo motor 5 to reduce the falling speed of the material.

[0022] In addition, when the mixer is in the mixing interval and does not need to feed, the controller 11 can manually control the drive motor to turn off and control the servo motor 5 to rotate so that the baffle plate 4 closes the feed cylinder 2.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A powder material feeding control mechanism, characterized in that: The system includes a hopper (1) positioned above a belt conveyor (10), with a discharge cylinder (2) connected sequentially to the bottom of the hopper (1). A rotating shaft (3), driven by a servo motor (5), runs through and rotatably on the discharge cylinder (2). The rotating shaft (3) is rotatably mounted on a pair of bearings (6) fixed to the discharge cylinder (2). A baffle plate (4) for blocking or opening the discharge cylinder (2) is provided on the rotating shaft (3). The belt conveyor (10) includes a frame (10-1). The frame (10-1) is provided with a drive roller and a driven roller, and a conveyor belt is wound around the drive roller and the driven roller. The drive roller is driven to rotate by a drive motor. The frame (10-1) is provided with a pair of mounting frames (10-2). The pair of mounting frames (10-2) are provided with multiple sets of photoelectric sensors (10-3) at different heights for measuring the height of the material on the conveyor belt. The servo motor (5), the drive motor and the photoelectric sensors (10-3) are electrically connected to the controller (11).

2. The powder material feeding control mechanism according to claim 1, characterized in that: The feed cylinder (2) is provided with flange cover one (7) and flange cover two (8) respectively for the two bearings (6), and flange cover two (8) is provided with a sealing ring (9) for the rotating shaft (3).

3. The powder material feeding control mechanism according to claim 1, characterized in that: The bearing (6) is a 6208-2RS contact double-sealed deep groove ball bearing (6).

4. The powder material feeding control mechanism according to claim 1, characterized in that: The bearing (6) is filled with No. 4 white lithium-based grease, and the amount of grease is 1 / 2 to 2 / 3 of the effective space of the bearing (6).

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