A rotor pump filling type multi-head liquid pesticide filling machine

Abstract

The utility model relates to the technical field of pesticide filling machine discloses a rotor pump filling formula multi -head liquid pesticide filling machine, it includes frame, be provided with the medicine box and a plurality of filling device on the frame, the filling device includes servo motor, rotor pump, return bend and filling head, the servo motor is used for driving rotor pump rotation, one end of return bend with the bottom intercommunication of medicine box, the other end of return bend with the liquid suction mouth intercommunication of rotor pump, the medicine box sets up above filling device, the pipe body bending of return bend department is located below rotor pump, the liquid outlet of rotor pump with filling head intercommunication, this rotor pump filling formula multi -head liquid pesticide filling machine, and each filling device is by servo motor drive rotor pump and realizes the accurate quantitative filling of filling head, and each filling device controls respectively, and the number of amplification filling device can improve filling efficiency, also be favorable to improve filling precision, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of pesticide filling machine technology, specifically a rotor pump filling type multi-head liquid pesticide filling machine. Background Technology

[0002] A liquid pesticide filling machine is a batch filling production equipment used to quantitatively fill liquid pesticides into packaging bottles. Existing liquid pesticide filling machines typically integrate a medicine tank, a drive unit, a filling unit, and a linear conveyor line on a frame. The filling unit has multiple filling heads arranged in a straight line. The drive unit has piston cylinders corresponding to each filling head. The drive unit's drive device drives the piston rods in each piston cylinder to move up and down, allowing each piston cylinder to quantitatively extract liquid pesticide from the medicine tank and discharge it from the corresponding filling head. The linear conveyor line is located below the linearly arranged filling heads. As rows of empty bottles move along the linear conveyor line to the bottom of each filling head, they can receive the liquid pesticide discharged from the filling head for filling. After filling, the bottles are moved outside the equipment by the linear conveyor line, while the next row of empty bottles moves along the linear conveyor line to the bottom of each filling head for the next filling.

[0003] Based on the process characteristics of pesticide filling machines using a row-filling method, increasing the number of filling heads allows for the filling of more bottles within a single filling cycle, thus improving overall filling efficiency. Therefore, we developed a 28-head inline liquid pesticide filling machine (application number: 202420187619.7) based on improvements to existing equipment. However, because existing pesticide filling machines use a drive unit that drives the piston rods to rise and fall as a whole, the number of filling heads that can be added is limited by the load on the drive mechanism, making it difficult to significantly improve filling efficiency. Furthermore, the overall drive structure of existing pesticide filling machines also has at least the following drawbacks: Firstly, existing pesticide filling machines achieve quantitative extraction and filling through a piston cylinder structure. The quantitative accuracy is limited by the assembly accuracy of each piston cylinder and piston rod, making it difficult to achieve high-precision quantitative filling. Secondly, existing pesticide filling machines use an integrated drive system, so when a filling device malfunctions, the machine needs to be stopped for repair, which affects production rhythm and efficiency, and the maintenance cost is high. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rotor pump filling multi-head liquid pesticide filling machine. Each filling device is driven by a servo motor to achieve precise quantitative filling of the filling head. Each filling device is controlled separately, which can increase the number of filling devices, improve filling efficiency, improve filling accuracy, and reduce maintenance costs.

[0005] The objective of this utility model is achieved through the following technical solution: A multi-head liquid pesticide filling machine with a rotor pump includes a frame on which a pesticide tank and several filling devices are mounted. Each filling device includes a servo motor, a rotor pump, a return bend, and a filling head. The servo motor drives the rotor pump to rotate. One end of the return bend is connected to the bottom of the pesticide tank, and the other end is connected to the suction port of the rotor pump. The pesticide tank is positioned above the filling device. The bend in the return bend is located below the rotor pump, and the discharge port of the rotor pump is connected to the filling head.

[0006] Specifically, the return bend is a U-shaped pipe, and a slag collection pipe is connected downward in the middle of the U-shaped pipe. A slag discharge valve is provided at the other end of the slag collection pipe.

[0007] Specifically, a shut-off valve is installed between the medicine box and the return bend.

[0008] Furthermore, the top of the medicine box is provided with a medicine inlet, the inside of the medicine box is provided with a flow plate, the top of the flow plate is provided with several corrugated strips arranged side by side, the top of the flow plate is positioned directly opposite the medicine inlet, the two ends of the flow plate are fixedly provided with end plates, the two ends of the corrugated strips are respectively connected to the two end plates, and the top of the end plate is higher than the top of the corrugated strips.

[0009] Specifically, starting from the position directly opposite the drug inlet and moving towards both sides, the peak height of each waveform gradually increases.

[0010] Furthermore, a shelf is fixedly installed inside the medicine box, and the diffusion plate is placed on the shelf.

[0011] Specifically, the top of the medicine box has an inspection port, and the end plate has a handle on the side away from the corrugated strip, and the handle is adapted to the position of the inspection port.

[0012] The beneficial effects of this utility model are: This rotary pump-type multi-head liquid pesticide filling machine has a medicine tank and several filling devices mounted on its frame. Each filling device includes a servo motor, a rotary pump, a return bend, and filling heads. The servo motor drives the rotary pump to rotate. One end of the return bend is connected to the bottom of the medicine tank, and the other end is connected to the suction port of the rotary pump. The medicine tank is positioned above the filling devices, and the bend in the return bend is located below the rotary pump. The discharge port of the rotary pump is connected to the filling heads. The servo motor controls the rotation of the rotary pump, drawing pesticide liquid from the medicine tank and discharging it through the filling heads to complete the filling process. In this pesticide filling machine, each filling device operates independently without interference. The number of filling heads is unlimited, and the number of filling devices can be increased as needed to improve the filling efficiency of the pesticide filling machine. Because the servo motor can precisely control the number of rotations and angle of the rotor inside the rotary pump, accurate quantitative filling can be achieved. When one filling unit malfunctions and becomes unusable, it does not affect the normal operation of other filling units. Therefore, production does not need to be interrupted, and the malfunctioning unit can be repaired at a later time, which helps maintain production rhythm and improve efficiency. The filling unit is equipped with a return bend and a flow diffuser in the medicine tank to purify the raw material solution entering the rotor pump. This prevents existing solid particles in the raw material solution from entering the rotor pump and causing damage. Compared to conventional filters, the return bend and flow diffuser have a simpler and more durable structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a rotor pump filling multi-head liquid pesticide filling machine according to the present invention; Figure 2 This is a schematic diagram of the filling device in a rotor pump filling multi-head liquid pesticide filling machine according to the present invention; Figure 3 This is a schematic diagram of the internal structure of the medicine box in a rotor pump filling multi-head liquid pesticide filling machine according to this utility model; Figure 4 This is a schematic diagram of the flow plate structure in a rotor pump filling multi-head liquid pesticide filling machine of this utility model; In the diagram, 1-frame, 2-medicine tank, 3-servo motor, 4-rotor pump, 5-return bend, 6-filling head, 7-slag collection pipe, 8-slag discharge valve, 9-shut-off valve, 10-flow plate, 11-wave strip, 12-end plate, 13-placement rack, 14-inspection port, 15-handle. Detailed Implementation

[0014] The technical solution of this utility model is described in further detail below with reference to the accompanying drawings, but the scope of protection of this utility model is not limited to the following description.

[0015] like Figures 1 to 4As shown, a multi-head liquid pesticide filling machine using a rotor pump includes a frame 1. A pesticide tank 2 and several filling devices are mounted on the frame 1. Each filling device includes a servo motor 3, a rotor pump 4, a return pipe 5, and a filling head 6. The pesticide tank 2 is fixedly mounted on the top of the frame 1. The servo motor 3 is fixedly mounted below the pesticide tank 2 at the rear of the frame 1. The rotor pump 4 is fixedly connected to the housing of the servo motor 3. The output shaft of the servo motor 3 is connected to the input shaft of the rotor in the rotor pump 4. When the servo motor 3 rotates, it drives the rotor in the rotor pump 4 to rotate. One end of the return pipe 5 is connected to the bottom of the pesticide tank 2, and the other end is connected to the suction port of the rotor pump 4. The bend in the return pipe 5 is located below the rotor pump 4. The discharge port of the rotor pump 4 is connected to the filling head 6. When the rotor in the rotor pump 4 rotates under the drive of the servo motor 3, it draws pesticide liquid from the pesticide tank 2 through the return pipe 5 and pumps it to the filling head 6 for discharge, thus completing the filling process.

[0016] In this pesticide filling machine, each filling device operates independently without interference. Compared to the original integrated drive system, the number of filling heads 6 is unlimited, and the number of filling devices can be designed according to needs, enabling the filling of more bottles in one filling cycle and improving the overall filling efficiency of the pesticide filling machine. Because the servo motor 3 can precisely control the rotation number and angle of the rotor in the rotor pump 4, accurate quantitative filling can be achieved. When a filling device malfunctions and cannot be used, its servo motor 3 can be temporarily stopped (during each filling cycle, the bottle currently being filled by the filling head 6 in that device will stop filling, and the bottle can be removed from the conveyor line by the bottle rejection device located at the rear of the pesticide filling machine). This does not affect the normal operation of other filling devices, thus avoiding production interruption. Repair of the filling device can be scheduled at another time, which helps to maintain production rhythm and improve production efficiency.

[0017] Due to the production process, the pesticide solution in tank 2 contains tiny solid particles such as zirconium beads. Since the rotor pump 4 is a high-precision component, direct entry of these tiny particles can cause wear, reduce metering accuracy, and even lead to pumping failure. Therefore, a filter element is needed to remove these particles. Using a conventional filter with large mesh sizes would be ineffective, and the frequent start-stop cycles of the rotor pump during filling would cause small-mesh filters to be constantly impacted by the pesticide solution, resulting in significant wear. Therefore, a bend pipe 5 is designed in the filling device. This bend pipe 5 forms a bend below the rotor pump 4. When the rotor pump 4 draws pesticide solution from tank 2, the solution flows through this bend and collides with the pipe wall, effectively trapping and settling residual solid particles at the bottom of the bend, thus purifying the solution and preventing these particles from entering the rotor pump 4 and causing damage.

[0018] In practice, the return bend 5 is a U-shaped pipe, with a slag collection pipe 7 connected downwards in the middle of the U-shaped pipe. A slag discharge valve 8 is installed at the other end of the slag collection pipe 7. During filling production, the slag discharge valve 8 is closed, allowing solid particles trapped and settled by the return bend 5 to accumulate in the slag collection pipe 7 under gravity. During production breaks, the slag discharge valve 8 can be opened to discharge these solid particles. A shut-off valve 9 is installed between the medicine tank 2 and the return bend 5. During filling production, the shut-off valve 9 is open, allowing the rotor pump 4 to draw liquid medicine from the medicine tank 2. When maintenance of the filling device is required, the shut-off valve 9 can be closed to prevent liquid medicine from flowing out.

[0019] Furthermore, such as Figure 3 , Figure 4 As shown, the medicine tank 2 has a medicine inlet at the top and a flow plate 10 inside. Several corrugated strips 11 are arranged side-by-side on the top of the flow plate 10, creating a wavy top surface. The top of the flow plate 10 faces the medicine inlet. End plates 12 are fixed to both ends of the flow plate 10, and each end of a corrugated strip 11 is connected to one of the end plates 12. The top of the end plates 12 is higher than the top of the corrugated strips 11. When raw material medicine is added to the medicine tank 2, the medicine first enters the space between the corrugated strips 11 directly below the medicine inlet, and then gradually flows out to both sides of the flow plate 10 into the medicine tank 2. Due to the presence of several corrugated strips 11, as the medicine flows out of the flow plate 12, solid particles in the medicine are trapped and settled at the root of the corrugated top surface of the flow plate 12, further purifying the medicine.

[0020] Furthermore, starting from the position directly opposite the inlet and moving towards both sides, the peak height of each wave strip 11 gradually increases, which plays a role in segmented interception and sedimentation during the flow of the liquid medicine, further improving the purification effect of the flow plate 10 on the liquid medicine.

[0021] In practice, a placement rack 13 is fixedly installed inside the medicine box 2, and the flow plate 10 is placed on the placement rack 13. The installation process of the flow plate 10 is extremely convenient, and the flow plate 10 can also be easily removed for cleaning during production breaks or maintenance. The top of the medicine box 2 is also provided with an inspection port 14, and a handle 15 is provided on the side of the end plate 12 away from the corrugated strip 11. The handle 15 is adapted to the position of the inspection port 14, further facilitating the installation and removal of the flow plate 10.

[0022] It should be noted that this utility model, a rotor pump-type multi-head liquid pesticide filling machine, improves upon the existing structure of pesticide filling machines by modifying the internal structure of the filling section and the pesticide tank 2. Other structures of the pesticide filling machine not mentioned in the above embodiments, including lifting mechanisms for arranging the filling heads 6 in a row and driving their lifting and lowering, and linear conveyor lines for transporting empty bottles, can all be found in existing pesticide filling machines (e.g., a 28-head inline liquid pesticide filling machine, application number: 202420187619.7). It should also be noted that with the increasing maturity of servo motor and rotor pump technologies, the cost of servo motors and rotor pumps is now relatively economical. Compared to the original structure of an integrally driven filling cylinder, the manufacturing cost of this rotor pump-type multi-head liquid pesticide filling machine has not increased significantly. Furthermore, due to its advantages in improving filling efficiency, achieving precise quantitative filling, and ensuring smooth production, this rotor pump-type multi-head liquid pesticide filling machine still has enormous potential for widespread application.

[0023] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A rotary pump-type multi-head liquid pesticide filling machine, comprising a frame, wherein a pesticide tank and a plurality of filling devices are mounted on the frame, characterized in that, The filling device includes a servo motor, a rotor pump, a return bend tube, and a filling head. The servo motor drives the rotor pump to rotate. One end of the return bend tube is connected to the bottom of the medicine tank, and the other end of the return bend tube is connected to the suction port of the rotor pump. The medicine tank is located above the filling device. The bend of the return bend tube is located below the rotor pump, and the discharge port of the rotor pump is connected to the filling head.

2. The multi-head liquid pesticide filling machine with rotor pump as described in claim 1, characterized in that, The return bend is a U-shaped pipe, and a slag collection pipe is connected downward in the middle of the U-shaped pipe. A slag discharge valve is provided at the other end of the slag collection pipe.

3. The multi-head liquid pesticide filling machine with rotor pump as described in claim 1, characterized in that, A shut-off valve is installed between the medicine box and the return pipe.

4. A rotor pump filling type multi-head liquid pesticide filling machine according to claim 1, characterized in that, The medicine box has a medicine inlet on the top and a flow plate inside. Several corrugated strips are arranged side by side on the top of the flow plate. The top of the flow plate is directly opposite the medicine inlet. End plates are fixedly installed at both ends of the flow plate. The two ends of the corrugated strips are respectively connected to two end plates. The top of the end plate is higher than the top of the corrugated strips.

5. A rotor pump filling type multi-head liquid pesticide filling machine according to claim 4, characterized in that, Among the waveforms, starting from the position directly opposite the drug inlet and moving towards both sides, the peak height of each waveform gradually increases.

6. A rotor pump filling type multi-head liquid pesticide filling machine according to claim 4, characterized in that, The medicine box is equipped with a fixed rack, and the diffusion plate is placed on the rack.

7. A rotor pump filling type multi-head liquid pesticide filling machine according to claim 6, characterized in that, The top of the medicine box has an inspection port, and the end plate has a handle on the side away from the corrugated strip. The handle is adapted to the position of the inspection port.

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