A chromium-free passivation agent mixing and quantitative feeding device

Abstract

The utility model relates to the field of chrome-free passivator processing discloses a kind of chrome-free passivator mixed quantitative feeding device, including treatment box, the inner wall of the treatment box is fixedly connected with mixing bucket, the top of the mixing bucket is provided with bucket cover, the inner wall of the mixing bucket is fixedly connected with discharge pipe, the end of the discharge pipe is fixedly connected with control valve, the top of the treatment box is fixedly connected with support, the top of the support is fixedly connected with storage barrel, the storage barrel is fixedly connected with feeding pipe by proportional valve, the bottom end of the feeding pipe has feeding nozzle by expansion pipe, the top of the support is fixedly connected with electric push rod, the output end of the electric push rod is fixedly connected with lifting frame.In the utility model, the height and position of feeding nozzle are accurately adjusted by electric push rod, the inner wall is fully flushed by cooperating water pump water supply, the production precision, efficiency and cleanliness are improved, manual intervention and error are reduced, and operating cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chromium-free passivating agent processing, and in particular to a chromium-free passivating agent mixing and quantitative feeding device. Background Technology

[0002] Chromium-free passivating agents are environmentally friendly chemical agents used for metal surface treatment. Their core characteristic is that they are chromium-free. They are mainly used to replace traditional chromium-containing passivating agents, forming a dense passivation film on the metal surface, thereby inhibiting metal corrosion and extending service life. Chromium-free passivating agents are usually not a single component, but a compound system of multiple functional components. The core purpose of mixing is to allow the components to "work synergistically" to make up for the performance defects of a single component and ultimately form a high-quality passivation film. In order to maintain the precise proportion of each component in the passivating agent and ensure that the passivation effect is stable and controllable, quantitative feeding is required during mixing. The proportional valve linearly adjusts the valve core opening through an electrical signal to precisely control the flow rate, thereby achieving quantitative feeding.

[0003] A search revealed Chinese Patent Publication No. CN221413002U, which discloses a chromium-free passivating agent mixing and metering device. This device features an electric telescopic rod on one side of a moving box and a drive device on a support frame that rotates a brush rod. This, in turn, drives a replacement brush to clean the metering cup and the inner wall of the feeding pipe. Compared to existing chromium-free passivating agent mixing and metering devices, this device addresses the problem of clogging caused by residual impurities to a certain extent. Furthermore, by incorporating a snap-fit ​​structure on the brush rod, the replacement brush is made detachable and replaceable, further ensuring the effectiveness of the cleaning process.

[0004] The above technical solutions achieve the function of cleaning and preventing residue blockage by replacing the brush. However, relying solely on the detachable brush to ensure the cleaning effect is not comprehensive enough. This can lead to residues embedding in the brush and causing secondary pollution. The need to disassemble and replace the brush may increase manual operation, leading to increased errors and operating costs. Therefore, a chromium-free passivating agent mixing and quantitative feeding device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a chromium-free passivating agent mixing and quantitative feeding device, which aims to improve the problem of cross-contamination and reduced product quality caused by the reliance on brush cleaning in the existing chromium-free passivating agent mixing and quantitative feeding device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a chromium-free passivating agent mixing and quantitative feeding device, comprising a processing box, a mixing tank fixedly connected to the inner wall of the processing box, a lid provided on the top of the mixing tank, a discharge pipe fixedly connected to the inner wall of the mixing tank, a control valve fixedly connected to the end of the discharge pipe, a support fixedly connected to the top of the processing box, a storage tank fixedly connected to the top of the support, a feeding pipe fixedly connected to the storage tank via a proportional valve, a feeding nozzle provided at the bottom end of the feeding pipe via a telescopic tube, an electric push rod fixedly connected to the top of the support, a lifting frame fixedly connected to the output end of the electric push rod, a rotating disk rotatably connected to the inner wall of the lifting frame, a solenoid valve fixedly connected to the bottom of the rotating disk via an annular tube, a spray pipe fixedly connected to the end of the solenoid valve, a water pump fixedly connected to the inner wall of the annular tube via a flexible hose, a water tank fixedly connected to the water pump via a water pipe, and a driving component provided on the outer wall of the lifting frame for driving the rotating disk to rotate and causing the feeding nozzle to switch its orientation position.

[0007] As a further description of the above technical solution:

[0008] The rotating disk is arranged in an I-shape, and the feeding nozzle is fixedly connected to the inner wall of the rotating disk through a rigid tube.

[0009] As a further description of the above technical solution:

[0010] The water pump is fixedly connected to the outer wall of the support, and the bottom end of the nozzle is inclined downwards.

[0011] As a further description of the above technical solution:

[0012] The annular tube is fitted onto the outer wall of the feeding nozzle.

[0013] As a further description of the above technical solution:

[0014] The drive assembly includes a drive motor, the output end of which is fixedly connected to a drive wheel via a rotating shaft, and a gear ring is fixedly connected to the outer wall of the rotating disk.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the lifting frame is fixedly connected to the outer wall of the drive motor, and the drive wheel meshes with the gear ring.

[0017] As a further description of the above technical solution:

[0018] The toothed ring is located at the top of the lifting frame.

[0019] As a further description of the above technical solution:

[0020] The top of the mixing tank is provided with an installation groove, and a small motor is fixedly connected to the inner wall of the installation groove. A vacuum tube is fixedly connected to the inner wall of the tank lid, and a vacuum pump is fixedly connected to the end of the vacuum tube.

[0021] As a further description of the above technical solution:

[0022] The mounting slot is located on the top right side of the mixing tank, and the output end of the small motor is also fixedly connected to the bottom of the tank lid via a rotating shaft.

[0023] As a further description of the above technical solution:

[0024] The vacuum tube is retractable at one end near the lid, and it passes through the lid. The outer wall of the vacuum pump is fixedly connected to the right side of the processing box.

[0025] This utility model has the following beneficial effects:

[0026] 1. In this utility model, the height and position of the feeding nozzle are precisely adjusted by an electric push rod, the telescopic tube is aligned with the mixing tank, the proportioning valve adds chromium-free passivating agent raw materials in a quantitative manner, and the water pump supplies water to thoroughly rinse the inner wall, thereby improving production accuracy, efficiency and cleanliness, reducing manual intervention and errors, reducing operating costs, ensuring stable product quality and preventing cross-contamination.

[0027] 2. In this utility model, by adding a small motor to drive the barrel cover at the top of the mixing barrel, and cooperating with a retractable vacuum tube and a vacuum pump, the mixing process is fully sealed and in a negative pressure environment. This effectively isolates oxygen to prevent the oxidation of raw materials, eliminates stirring bubbles to improve mixing uniformity, avoids the leakage of harmful gases, enhances production safety, ensures product quality stability, reduces energy consumption, and improves the reliability and efficiency of chromium-free passivator synthesis. Attached Figure Description

[0028] Figure 1 This is a front view schematic diagram of the main structure of a chromium-free passivating agent mixing and quantitative feeding device proposed in this utility model;

[0029] Figure 2 This is a bottom view schematic diagram of the main structure of a chromium-free passivating agent mixing and quantitative feeding device proposed in this utility model;

[0030] Figure 3 This utility model proposes a chromium-free passivating agent mixing and quantitative feeding device. Figure 2 Enlarged view of region A in the middle;

[0031] Figure 4 This is a side view of the main structure of a chromium-free passivating agent mixing and quantitative feeding device proposed in this utility model;

[0032] Figure 5 This is a partial rear view of the main structure of the chromium-free passivating agent mixing and quantitative feeding device proposed in this utility model.

[0033] Legend:

[0034] 1. Processing tank; 2. Mixing tank; 3. Tank lid; 4. Discharge pipe; 5. Control valve; 6. Support; 7. Storage tank; 8. Feeding pipe; 9. Proportional valve; 10. Telescopic pipe; 11. Feeding nozzle; 12. Electric push rod; 13. Lifting frame; 14. Rotary disc; 15. Gear ring; 16. Drive motor; 17. Drive wheel; 18. Annular pipe; 19. Spray pipe; 20. Solenoid valve; 21. Water tank; 22. Water pump; 23. Mounting slot; 24. Small motor; 25. Vacuum pump; 26. Vacuum extraction pipe. Detailed Implementation

[0035] 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.

[0036] Reference Figures 1-3This utility model provides an embodiment of a chromium-free passivating agent mixing and quantitative feeding device, comprising a processing tank 1, a mixing barrel 2 fixedly connected to the inner wall of the processing tank 1, a stirring blade inside the mixing barrel 2, and a servo motor inside the processing tank 1 driving the rotation to mix the passivating agent. The stirring blade inside the mixing barrel 2 is connected to a vertical transmission shaft via a coupling. The transmission shaft passes through the bottom of the mixing barrel 2 and extends into the processing tank 1. The output end of the servo motor fixed inside the processing tank 1 drives the stirring blade to rotate through gear meshing with the bottom end of the transmission shaft. A mechanical sealing ring is provided between the bottom of the mixing barrel 2 and the transmission shaft to prevent liquid leakage. A barrel cover 3 is provided on the top of the mixing barrel 2, and a discharge pipe 4 is fixedly connected to the inner wall of the mixing barrel 2. A control valve 5 is fixedly connected to the end of the discharge pipe 4. A bracket 6 is fixedly connected to the top of the processing box 1. A storage tank 7 is fixedly connected to the top of the bracket 6. Several groups of storage tanks 7 are arranged at equal intervals. Each group of storage tanks 7 has a scale line on its body to display the remaining amount. The scale line of the storage tank 7 is used for manual calibration of the flow meter accuracy. The storage tank 7 is fixedly connected to the feeding pipe 8 through a proportional valve 9. The proportional valve 9 can accurately control the feeding amount. The proportional valve 9 has a built-in flow meter, and its signal output terminal is connected to a PLC controller. The controller controls the opening degree and opening time of the proportional valve 9 according to the preset formula parameters to achieve quantitative feeding. The bottom end of the feeding pipe 8 is provided with a feeding nozzle 11 through a telescopic tube 10. The telescopic tube 10 is a spiral metal flexible tube. Its top end is fixedly connected to the feeding pipe 8. A rigid pipe is provided between the feeding nozzle 11 and the telescopic pipe 10. The bottom end is connected to the rigid pipe through a rotary joint. When the rotating disk 14 rotates, the telescopic pipe 10 extends, retracts, and twists axially. The rigid pipe revolves with the rotating disk 14 but does not rotate on its own axis to avoid pipe entanglement. The hose between the annular pipe 18 and the water pump 22 adopts the same design. The bottom end of the telescopic pipe 10 is fixedly connected to the feeding nozzle 11 through the rigid pipe. The number of feeding nozzles 11 is the same as that of the storage tank 7, and they are connected to the rotating disk 14 through the rigid pipe. They are distributed in a circular array around the center point of the rotating disk 14. An electric push rod 12 is fixedly connected to the top of the bracket 6. The output end of the electric push rod 12 is fixedly connected to the lifting frame 13. The inner wall of the lifting frame 13 is rotatably connected to... A rotating disc 14 is arranged in an I-shape. The bottom of the rotating disc 14 is fixedly connected to an annular pipe 18 via a mounting block. The annular pipe 18 is sleeved on the outer wall of the feeding nozzle 11. The inner wall of the annular pipe 18 is also fixedly connected to a solenoid valve 20 via a pipe. The end of the solenoid valve 20 is fixedly connected to a spray pipe 19. Several sets of spray pipes 19 are arranged at equal intervals on the annular pipe 18. The water pump 22 transmits water source and sprays it out through the spray pipes 19 to rinse the mixing tank 2. The water pump 22 is fixedly connected to the outer wall of the support 6. The inner wall of the annular pipe 18 is fixedly connected to the water pump 22 via a hose. The water pump 22 is fixedly connected to the outer wall of the support 6 via a water pipe. The water pump 22 is fixedly connected to the water tank 21 via a water pipe.

[0037] Reference Figures 3-4The outer wall of the lifting frame 13 is equipped with a drive assembly for rotating the rotating disk 14 to change the orientation of the feeding nozzle 11. The drive assembly includes a drive motor 16, a drive wheel 17, and a gear ring 15. The drive wheel 17 is a gear. The outer wall of the lifting frame 13 is fixedly connected to the outer wall of the drive motor 16. The output end of the drive motor 16 is fixedly connected to the drive wheel 17 via a rotating shaft. The drive wheel 17 meshes with the gear ring 15. The gear ring 15 is located at the top of the lifting frame 13. The outer wall of the rotating disk 14 is fixedly connected to the gear ring 15. The drive motor 16 drives the feed nozzle 11 to rotate. The rotating shaft rotates regularly in both directions, causing the rotating disk 14 to move. The drive motor 16 is a stepper motor, and its output shaft meshes with the gear ring 15 through the drive wheel 17, causing the rotating disk 14 to rotate in 60° increments. The rotating disk 14 has an angle sensor inside its I-shaped structure to detect the circumferential position of the feeding nozzle 11 and transmit the signal to the PLC controller. The controller matches the feeding nozzle 11 corresponding to the target storage tank 7 according to the preset program and controls the electric push rod 12 to descend until the feeding nozzle 11 is aligned with the center of the mixing tank 2.

[0038] Reference Figure 5 The top of the mixing tank 2 has a mounting groove 23, and a small motor 24 is fixedly connected to the inner wall of the mounting groove 23. A vacuum tube 26 is fixedly connected to the inner wall of the lid 3, and a vacuum pump 25 is fixedly connected to the end of the vacuum tube 26. The vacuum pump 25 extracts air from inside the lid 3 through the vacuum tube 26. The output end of the small motor 24 is also fixedly connected to the bottom of the lid 3 via a rotating shaft, allowing the lid 3 to move with the small motor 24. The rotating shaft can automatically control the opening or closing of the lid. A vacuum tube 26 is fixedly connected to the inner wall of the lid 3. The end of the vacuum tube 26 near the lid 3 is telescopic. The vacuum tube 26 passes through the lid 3. A vacuum pump 25 is fixedly connected to the end of the vacuum tube 26. The vacuum tube 26 passes through the lid 3. The vacuum tube 26 adopts a corrugated telescopic tube 10 structure. Its section near the lid 3 can extend and retract synchronously with the lid 3. A silicone sealing ring is embedded at the bottom edge of the lid 3, which is pressed against the top plane of the mixing tank 2 to form an air seal.

[0039] Working principle: The electric push rod 12 drives the lifting frame 13 to descend, causing the rotating disk 14 and its feeding nozzle 11 to descend to a predetermined height inside the mixing tank 2. Simultaneously, the telescopic pipe 10 extends and retracts accordingly, precisely aligning the selected feeding nozzle 11 with the center of the mixing tank 2. The proportional valve 9 below the corresponding storage tank 7 is opened, and the specific chromium-free passivating agent raw material is precisely controlled and added to the mixing tank 2 through the feeding pipe 8, telescopic pipe 10, and feeding nozzle 11 according to the remaining amount displayed on the scale. After feeding is completed, the small motor 24 drives the tank lid 3 to descend and close the mixing tank 2. The vacuum pump 25 evacuates the inside of the mixing tank 2 through the vacuum pipe 26. The servo motor inside the processing box 1 drives the stirring blades to rotate for mixing. The vacuum environment lowers the boiling point of the raw materials. The air bubbles generated during the stirring process burst rapidly under negative pressure. Combined with the shearing force of the stirring blades, this increases the diffusion rate of raw material molecules. After mixing, the control valve 5 is opened, and the mixture is discharged through the discharge pipe 4. Finally, the electric push rod 12 is restarted to drive the rotating disk 14 to descend to the predetermined position. The drive motor 16 drives the drive wheel 17 to rotate. The drive wheel 17 meshes with the toothed ring 15 fixed on the outer wall of the rotating disk 14, causing the rotating disk 14 to drive all the nozzles 19 to rotate back and forth around the center. The water pump 22 draws water from the water tank 21 and sends it into the annular pipe 18 through the hose. The solenoid valve 20 is opened, and the water flows out through the nozzles 19 on the annular pipe 18 to rinse the inner wall of the mixing tank 2, completing the cleaning cycle and realizing continuous preparation.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A chromium-free passivating agent mixing and quantitative feeding device, comprising a processing tank (1), wherein a mixing tank (2) is fixedly connected to the inner wall of the processing tank (1), a tank cover (3) is provided on the top of the mixing tank (2), a discharge pipe (4) is fixedly connected to the inner wall of the mixing tank (2), and a control valve (5) is fixedly connected to the end of the discharge pipe (4), characterized in that: A support (6) is fixedly connected to the top of the processing box (1), and a storage tank (7) is fixedly connected to the top of the support (6). The storage tank (7) is fixedly connected to a feeding pipe (8) via a proportional valve (9). A feeding nozzle (11) is provided at the bottom end of the feeding pipe (8) via a telescopic pipe (10). An electric push rod (12) is fixedly connected to the top of the support (6), and a lifting frame (13) is fixedly connected to the output end of the electric push rod (12). The inner wall of the lifting frame (13) is rotatably connected. A rotating disk (14) is connected to the bottom of the rotating disk (14) via an annular pipe (18) and a solenoid valve (20) is fixedly connected to the end of the solenoid valve (20). A spray pipe (19) is fixedly connected to the end of the solenoid valve (20). A water pump (22) is fixedly connected to the inner wall of the annular pipe (18) via a hose. A water tank (21) is fixedly connected to the water pump (22) via a water pipe. A drive assembly is provided on the outer wall of the lifting frame (13) to drive the rotating disk (14) to rotate so that the feeding nozzle (11) switches its orientation.

2. The chromium-free passivating agent mixing and metering device according to claim 1, characterized in that: The rotating disk (14) is arranged in an I-shape, and the feeding nozzle (11) is fixedly connected to the inner wall of the rotating disk (14) through a rigid tube.

3. The chromium-free passivating agent mixing and metering device according to claim 1, characterized in that: The water pump (22) is fixedly connected to the outer wall of the bracket (6), and the bottom end of the nozzle (19) is inclined downward.

4. The chromium-free passivating agent mixing and metering device according to claim 1, characterized in that: The annular tube (18) is fitted onto the outer wall of the feeding nozzle (11).

5. The chromium-free passivating agent mixing and metering device according to claim 1, characterized in that: The drive assembly includes a drive motor (16), the output end of which is fixedly connected to a drive wheel (17) via a rotating shaft, and a gear ring (15) is fixedly connected to the outer wall of the rotating disk (14).

6. The chromium-free passivating agent mixing and metering device according to claim 5, characterized in that: The outer wall of the lifting frame (13) is fixedly connected to the outer wall of the drive motor (16), and the drive wheel (17) meshes with the gear ring (15).

7. The chromium-free passivating agent mixing and metering device according to claim 5, characterized in that: The toothed ring (15) is located on top of the lifting frame (13).

8. The chromium-free passivating agent mixing and metering device according to claim 1, characterized in that: The top of the mixing tank (2) is provided with an installation groove (23), and a small motor (24) is fixedly connected to the inner wall of the installation groove (23). A vacuum tube (26) is fixedly connected to the inner wall of the tank cover (3), and a vacuum pump (25) is fixedly connected to the end of the vacuum tube (26).

9. The chromium-free passivating agent mixing and metering device according to claim 8, characterized in that: The mounting slot (23) is located on the top right side of the mixing tank (2), and the output end of the small motor (24) is also fixedly connected to the bottom of the tank cover (3) via a rotating shaft.

10. The chromium-free passivating agent mixing and metering device according to claim 8, characterized in that: The vacuum tube (26) is retractable at one end near the lid (3), and the vacuum tube (26) passes through the lid (3). The outer wall of the vacuum pump (25) is fixedly connected to the right side of the processing box (1).

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