Metering leak-proof powder structure of pesticide packaging machine

Abstract

The utility model belongs to the field of pesticide packing machine especially, it is a kind of metering leakproof powder structure of pesticide packing machine, aiming at the problem that the existing feeding device is relatively simple, sealing between discharge pipe and feed hopper is poor, leakage condition is easy to appear when conveying powdery material, the following scheme is presented, including support, its inner wall is slidably connected bin by sliding block sliding rail, the bottom of bin is fixed with the first connecting pipe with electromagnetic valve;Inclined feeding pipe is fixed in the inner wall of support, the outer wall of feeding pipe is connected with second connecting pipe, the inner wall of second connecting pipe is fixed with sealing ring, the bottom end of first connecting pipe extends to second connecting pipe and contacts with sealing ring, the top end of feeding pipe is connected with downward outlet discharge pipe, in the utility model, the sealing when powder conveying can be improved, avoid powder leakage, the weight of powder in bin and the conveying flow of powder can be monitored in real time, ensure the accurate conveying of powder.

Description

Technical Field

[0001] This utility model relates to the field of pesticide packaging machine technology, and in particular to a metering and leak-proof powder structure for a pesticide packaging machine. Background Technology

[0002] Pesticide packaging machines are core equipment in the pesticide production process, and their performance directly affects production efficiency, cost control, and product safety. As the pesticide industry develops towards higher efficiency, environmental protection, and intelligent manufacturing, packaging machine technology is constantly evolving, resulting in customized solutions for different formulations (powders, granules, and liquids).

[0003] When packaging pesticides, a feeding device is needed to transport materials to the hopper of the packaging machine. However, traditional feeding devices are relatively simple, and the sealing between the discharge pipe and the hopper is poor, which can easily lead to leakage when conveying powdery materials.

[0004] Therefore, we propose a metering and leak-proof powder structure for pesticide packaging machines. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as simple feeding devices, poor sealing between the discharge pipe and the feed hopper, and easy leakage when conveying powdery materials. Therefore, this invention proposes a metering and leak-proof powder structure for pesticide packaging machines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A metering and leak-proof powder structure for a pesticide packaging machine includes:

[0008] The support frame has its inner wall slidably connected to the hopper via a slider rail, and a first connecting pipe with a solenoid valve is fixed at the bottom of the hopper;

[0009] A feeding pipe is inclined and fixed to the inner wall of the support. The outer wall of the feeding pipe is connected to a second connecting pipe. A sealing ring is fixed to the inner wall of the second connecting pipe. The bottom end of the first connecting pipe extends into the second connecting pipe and contacts the sealing ring. The top end of the feeding pipe is connected to a discharge pipe with the outlet facing downward.

[0010] A cover is installed at the bottom of the discharge pipe via a connector. A connecting cover is fixed to the bottom of the cover, and a sealing strip is fixed to the inner wall of the connecting cover to fit the feed hopper.

[0011] The metering mechanism, located on the side of the silo, is used to monitor the weight and flow rate of the powder in real time.

[0012] The conveying mechanism, located on the side of the feeding pipe, is used to drive the conveying of powder materials.

[0013] In one possible design, the measuring mechanism includes:

[0014] Pressure plates fixed to the outer walls on both sides of the silo;

[0015] Two weighing devices are fixed to the top of the support, and the pressure plate is placed on the top of the weighing devices to support the weight of the hopper;

[0016] A flow meter fixed to the outer wall of the first connecting pipe is used to dynamically detect the flow rate of powder.

[0017] In one possible design, the conveying mechanism includes:

[0018] Rotate the shaft connecting the two ends of the feed tube;

[0019] The motor is fixed to the inner wall at the bottom of the bracket, and its output shaft is coaxially fixed to the rotating shaft;

[0020] The auger, welded to the outer wall of the shaft, is used to push powder into the feeding tube.

[0021] In one possible design, the connector includes:

[0022] Connecting ring sewn to the top of the covering cloth;

[0023] A threaded sleeve is rotatably connected to the top of the connecting ring, and this threaded sleeve is threadedly connected to the bottom end of the discharge pipe.

[0024] In one possible design, the top of the rotating shaft extends to the outside of the feed tube and is fixed with a lever;

[0025] The outer wall of the discharge pipe is rotatably connected to a rotating rod, and a torsion spring is provided between the two via a spring seat.

[0026] A connecting rod is fixed at one end of the rotating rod. The top of the connecting rod is spherical, and an arc-shaped striking rod is fixed at the bottom.

[0027] In one possible design, the bottom end of the lever is rotatably connected to a roller, which makes rolling contact with the spherical end of the connecting rod.

[0028] In one possible design, the top of the hopper is hinged to a top cover;

[0029] The outer wall of the connecting cover is threaded through multiple set screws, the front end of which abuts against the outer wall of the feed hopper.

[0030] In this application, during use, the connecting cover is placed on the top of the feed hopper of the pesticide packaging machine. Then, the feed hopper is pressed against by the set screw, the motor is started, and the motor drives the rotating shaft and auger to rotate. Then, the solenoid valve is opened, and the powder enters the feeding pipe through the first connecting pipe and the second connecting pipe. Under the conveying of the auger, it enters the feed hopper from the discharge pipe. During the conveying process, the weighing device and flow meter monitor the weight of the hopper and the flow rate of the powder in real time. At the same time as the rotating shaft rotates, it can drive the lever to rotate. The lever drives the roller to push the connecting rod to tilt at a certain angle. When the roller disengages from the connecting rod, the torsion spring drives the connecting rod to reset, which in turn drives the striking rod to strike the cover cloth to prevent the powder from adhering to the inner wall of the cover cloth.

[0031] Beneficial effects: In this utility model, the metering and leak-proof powder structure of a pesticide packaging machine can improve the sealing performance during powder conveying and prevent powder leakage by setting up structures such as sealing rings, shielding cloths and sealing strips.

[0032] In this utility model, the metering and anti-leakage powder structure of the pesticide packaging machine, through the setting of a weighing device, a flow meter and a solenoid valve, can monitor the weight of the powder in the hopper and the powder conveying flow rate in real time, so as to ensure the accurate delivery of the powder.

[0033] In this utility model, the metering and anti-leakage powder structure of the pesticide packaging machine is designed with a lever, a rotating lever and a striking lever. The flexible material of the cover makes the structure easy to assemble, and the cover can be periodically struck to prevent powder from adhering. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the metering and anti-leakage powder structure of a pesticide packaging machine proposed in this utility model;

[0035] Figure 2 This is a partial three-dimensional structural diagram from a first perspective of a metering and leak-proof powder structure for a pesticide packaging machine proposed in this utility model.

[0036] Figure 3 This is a partial three-dimensional structural diagram from a second perspective of a metering and leak-proof powder structure for a pesticide packaging machine proposed in this utility model.

[0037] Figure 4 This is a partial cross-sectional view of the metering and anti-leakage structure of a pesticide packaging machine proposed in this utility model.

[0038] In the diagram: 1. Support; 2. Hopper; 3. Top cover; 4. Pressure plate; 5. Weighing device; 6. Feeding pipe; 7. Rotating shaft; 8. Screw; 9. Motor; 10. First connecting pipe; 11. Second connecting pipe; 12. Sealing ring; 13. Flow meter; 14. Solenoid valve; 15. Discharge pipe; 16. Sheath; 17. Connecting cover; 18. Connecting ring; 19. Threaded sleeve; 20. Lever; 21. Roller; 22. Rotating rod; 23. Torsion spring; 24. Connecting rod; 25. Striking rod; 26. Sealing strip; 27. Set screw. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0040] In one embodiment: Refer to Figures 1-4 A metering and leak-proof powder structure includes: a support 1, which serves as the main support frame, and its inner wall is provided with a horizontally extending slider rail. A hopper 2 is slidably connected to the support 1 via the slider rail, enabling vertical displacement. A first connecting pipe 10 is welded and fixed to the bottom of the hopper 2, and a solenoid valve 14 is installed on the outer wall of the first connecting pipe 10 to control the powder flow.

[0041] The feeding pipe 6 is fixed at an angle to the inner wall of the bracket 1. A second connecting pipe 11 is welded to the outer wall of the feeding pipe 6, and an annular sealing ring 12 is embedded in the inner wall of the second connecting pipe 11. The bottom end of the first connecting pipe 10 is vertically inserted into the second connecting pipe 11, and its outer wall at the opening forms a tight surface contact with the sealing ring 12, constituting the first-level powder leakage barrier. The top end of the feeding pipe 6 is connected to the discharge pipe 15, and the outlet of the discharge pipe 15 is set vertically downward.

[0042] The cover 16 is made of flexible, wear-resistant fabric. Its top end is fixed to the bottom end of the discharge pipe 15 via a connector, allowing for a non-rigid connection between the feed hopper and the discharge pipe 15, facilitating structural assembly. The connector includes a connecting ring 18 sewn onto the top of the cover 16 and a threaded sleeve 19 rotatably connected above the connecting ring 18. The threaded sleeve 19 engages with the external thread at the bottom end of the discharge pipe 15, enabling quick assembly and disassembly of the cover 16. A connecting cover 17 is sewn onto the bottom end of the cover 16, with an annular sealing strip 26 embedded in its inner wall. After the connecting cover 17 is fitted onto the top of the feed hopper of the pesticide packaging machine, multiple set screws 27 penetrating its outer wall are screwed in. The front ends of the set screws 27 press against the outer wall of the feed hopper to complete the fixation. At this time, the sealing strip 26 is deformed under pressure to form a second-level anti-powder leakage barrier.

[0043] The metering mechanism is integrated on the side of the silo 2: two weighing devices 5 are respectively installed on both sides of the top of the bracket 1, and pressure plates 4 are welded to the outer walls of both sides of the silo 2. When the silo 2 moves to the working position along the slide rail, the pressure plates 4 fall onto the bearing platforms of the corresponding weighing devices 5, monitoring the weight of the powder in the silo 2 in real time. The weighing devices 22 can be LR-RTN series or other suitable models. A flow meter 13 is embedded in the outer wall of the first connecting pipe 10. The flow meter can be LFD-227 or other suitable models, dynamically detecting the powder flow rate. The weighing devices 5 and the flow meter 13 are linked to the solenoid valve 14 to realize closed-loop control of the powder conveying volume.

[0044] The conveying mechanism includes a rotating shaft 7 inside the feeding pipe 6, with both ends of the rotating shaft 7 rotatably connected to the end walls of the feeding pipe 6 via bearing seats. A spiral auger 8 is welded to the outer wall of the rotating shaft 7. A motor 9 is fixed to the inner wall of the bottom of the bracket 1, and its output shaft is coaxially connected to the rotating shaft 7 via a coupling, driving the auger 8 to rotate and convey the powder.

[0045] The top of the rotating shaft 7 extends to the outside of the feeding pipe 6, and a radial lever 20 is welded to its end. A roller 21 is mounted on the bottom of the lever 20 via a bearing. A rotating rod 22 is pivotally connected to the outer wall of the discharge pipe 15, and a spring seat and a torsion spring 23 are provided at the connection between the rotating rod 22 and the discharge pipe 15. A connecting rod 24 is vertically welded to the free end of the rotating rod 22. The top of the connecting rod 24 is machined into a spherical shape to reduce friction, and an arc-shaped striking rod 25 is welded to the bottom end. When the rotating shaft 7 rotates, the lever 20 drives the roller 21 to periodically push the spherical end of the connecting rod 24, forcing the rotating rod 22 to deflect against the torque of the torsion spring 23. When the roller 21 disengages from the connecting rod 24, the torsion spring 23 drives the rotating rod 22 to instantly reset, causing the striking rod 25 to strike the outer surface of the shielding cloth 16, shaking off the attached powder.

[0046] This application can be used in the field of pesticide packaging machines, or in other fields applicable to this application.

[0047] In another embodiment: a metering and leak-proof powder structure for a pesticide packaging machine, which is applied to the field of pesticide packaging machines;

[0048] In another aspect of this embodiment, the top of the hopper 2 is connected to an openable top cover 3 via a hinge, which facilitates the replenishment of powder.

[0049] The top of the rotating shaft 7 extends to the outside of the feeding pipe 6, and a radial lever 20 is welded to its end. A roller 21 is installed at the bottom of the lever 20. A rotating rod 22 is pivotally connected to the outer wall of the discharge pipe 15. A spring seat and a torsion spring 23 are provided at the connection between the rotating rod 22 and the discharge pipe 15. A connecting rod 24 is vertically welded to the free end of the rotating rod 22. The top of the connecting rod 24 is machined into a spherical shape to reduce friction, and an arc-shaped striking rod 25 is welded to the bottom end. When the rotating shaft 7 rotates, the lever 20 drives the roller 21 to periodically push the spherical end of the connecting rod 24, forcing the rotating rod 22 to deflect against the torque of the torsion spring 23. When the roller 21 disengages from the connecting rod 24, the torsion spring 23 drives the rotating rod 22 to instantly reset, causing the striking rod 25 to strike the outer surface of the cover 16 and shake off the attached powder.

[0050] Work process: Insert the connecting cover 17 into the top of the feed hopper of the pesticide packaging machine, and tighten the set screw 27 to compress and seal the sealing strip 26;

[0051] Start motor 9 drives shaft 7 and auger 8 to rotate;

[0052] When the solenoid valve 14 is opened, the powder in the hopper 2 flows into the second connecting pipe 11 through the first connecting pipe 10, and enters the feeding pipe 6 under the sealing of the sealing ring 12.

[0053] The screw conveyor 8 pushes the powder upward along the feeding pipe 6, and through the discharge pipe 15 and the cover 16 into the feed hopper;

[0054] Weighing device 5 monitors the weight of the remaining material in silo 2, flow meter 13 detects the instantaneous flow rate, and the data is fed back to the control system to adjust the opening of solenoid valve 14;

[0055] The rotation of the shaft 7 synchronously drives the lever 20. Each rotation pushes the connecting rod 24 once through the roller 21, triggering the striking rod 25 to strike the cloth 16.

[0056] However, as is well known to those skilled in the art, the working principles and wiring methods of the motor 9 and the solenoid valve 14 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0057] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0058] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A metering and leak-proof powder structure for a pesticide packaging machine, characterized in that, include: The bracket (1) has its inner wall slidably connected to the hopper (2) via a slider rail. The bottom of the hopper (2) is fixed with a first connecting pipe (10) equipped with a solenoid valve (14). A feeding pipe (6) is inclined and fixed to the inner wall of the support (1). The outer wall of the feeding pipe (6) is connected to the second connecting pipe (11). A sealing ring (12) is fixed to the inner wall of the second connecting pipe (11). The bottom end of the first connecting pipe (10) extends into the second connecting pipe (11) and contacts the sealing ring (12). The top end of the feeding pipe (6) is connected to the discharge pipe (15) with the outlet facing downward. A cover (16) is installed at the bottom of the discharge pipe (15) via a connector. A connecting cover (17) is fixed at the bottom of the cover (16). A sealing strip (26) is fixed on the inner wall of the connecting cover (17) to fit the feed hopper. The metering mechanism is located on the side of the silo (2) and is used to monitor the weight and flow rate of the powder in real time. The conveying mechanism is located on the side of the feeding pipe (6) and is used to drive the conveying of powder.

2. The metering and leak-proof powder structure of a pesticide packaging machine according to claim 1, characterized in that, The measuring device includes: Pressure plates (4) are fixed on the outer walls of both sides of the silo (2); Two weighing devices (5) are fixed at the top of the support (1), and the pressure plate (4) is placed at the top of the weighing devices (5) to bear the weight of the hopper (2); A flow meter (13) fixed to the outer wall of the first connecting pipe (10) is used to dynamically detect the flow rate of powder.

3. The metering and leak-proof powder structure of a pesticide packaging machine according to claim 2, characterized in that, The conveying mechanism includes: Rotate the shaft (7) connected between the two ends of the feeding pipe (6); The motor (9) is fixed to the inner wall of the bottom of the bracket (1), and its output shaft is coaxially fixed to the rotating shaft (7). The auger (8) welded to the outer wall of the rotating shaft (7) is used to push powder in the feeding pipe (6).

4. The metering and leak-proof powder structure of a pesticide packaging machine according to claim 3, characterized in that, The connector includes: A connecting ring (18) sewn onto the top of the cover (16); Rotate the threaded sleeve (19) at the top of the connecting ring (18), which is threadedly connected to the bottom end of the discharge pipe (15).

5. The metering and leak-proof powder structure of a pesticide packaging machine according to claim 4, characterized in that, The top of the rotating shaft (7) extends to the outside of the feeding tube (6) and is fixed with a lever (20). The outer wall of the discharge pipe (15) is rotatably connected to the rotating rod (22), and a torsion spring (23) is provided between the two through a spring seat. One end of the rotating rod (22) is fixed with a connecting rod (24), the top of which is spherical and the bottom end is fixed with an arc-shaped striking rod (25).

6. The metering and leak-proof powder structure of a pesticide packaging machine according to claim 5, characterized in that, The bottom end of the lever (20) is rotatably connected to a roller (21), which makes rolling contact with the spherical end of the connecting rod (24).

7. The metering and leak-proof powder structure of a pesticide packaging machine according to claim 6, characterized in that, The top of the hopper (2) is hinged to a top cover (3); The outer wall of the connecting cover (17) is threaded through multiple set screws (27), the front end of which abuts against the outer wall of the feed hopper.

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