Industrial acid liquor weighing and filling machine

Abstract

The utility model relates to the technical field of acid liquor filling, and provides an industrial acid liquor weighing and filling machine which comprises an acid liquor storage tank, an acid liquor conveying pipe, a filling nozzle, a filling hose, an electromagnetic valve, a weighing sensor, a supporting table, an operation panel, a controller, a display screen and an anti-corrosion tray. The electromagnetic valve is installed on the acid liquor conveying pipe, the upper end of the filling hose is connected with the filling nozzle, the anti-corrosion tray is located below the filling hose and further placed at the detection end of the weighing sensor, the weighing sensor is installed on the supporting table, and the controller is electrically connected with the electromagnetic valve, the weighing sensor, the operation panel and the display screen. The technical scheme has the beneficial effects that the weighing sensor serves as a weighing device, when the weighing sensor detects that the weight of industrial acid liquor in the subpackaging barrel reaches the specified weight, the controller automatically closes the electromagnetic valve so as to stop filling, the filling efficiency is improved, and the industrial acid liquor remaining in the filling hose drops on the anti-corrosion tray, so that the safety of filling is ensured. The industrial acid liquor is prevented from corroding the weighing device.

Description

Technical Field

[0001] This utility model relates to the field of acid filling technology, specifically to an industrial acid weighing and filling machine. Background Technology

[0002] In the production of printed circuit boards (PCBs), various acids are used, primarily for etching, surface treatment, and cleaning processes. Examples include industrial acids such as sulfuric acid, hydrochloric acid, and nitric acid, which are used to prepare etching solutions.

[0003] Circuit board manufacturers typically purchase industrial acid solutions from external suppliers and temporarily store them in large acid storage tanks in the company's warehouse. Then, based on the acid needs of each production workshop, workers fill the industrial acid solutions into small dispensing containers and finally transport the containers to the corresponding production workshops.

[0004] Currently, industrial acid filling machines include an acid storage tank, an acid delivery pipe, a filling nozzle, a filling hose, a valve, and an electronic scale. The bottom outlet of the acid storage tank is connected to one end of the acid delivery pipe, and the other end of the acid delivery pipe is connected to the filling nozzle. The valve is installed on the acid delivery pipe, and the upper end of the filling hose is connected to the filling nozzle. The operator first places an empty dispensing container on the electronic scale, then inserts the lower end of the filling hose into the top inlet of the dispensing container, and manually opens the valve. The industrial acid flows into the dispensing container. The operator must stay beside the dispensing container to observe the changes in the electronic scale reading. When the electronic scale reading reaches the specified weight value, the operator manually closes the valve, and finally removes the filling hose from the dispensing container and plugs the cap onto the top inlet of the dispensing container.

[0005] Due to the poor responsiveness of manual observation and operation, to prevent excessive industrial acid in the dispensing tank, workers often manually close the valve before the electronic scale reaches the specified weight. This necessitates reopening the valve to add more acid, then quickly closing it again, repeating this process until the scale reaches the required weight. When workers are fatigued and lack concentration, the scale may exceed the specified weight before the valve is manually closed, sometimes even causing excess acid to overflow from the top inlet of the dispensing tank onto the scale. This corrodes and damages the scale, reducing its weighing accuracy and lifespan. The current operation is cumbersome and inefficient. Furthermore, after filling, removing the dispensing hose from the top inlet and removing the tank from the scale results in residual acid dripping onto the scale.

[0006] Therefore, how to stop filling when the weighing device detects that the weight of the industrial acid in the dispensing container has reached the specified weight during the industrial acid filling process, thereby improving filling efficiency and preventing the industrial acid from corroding the weighing device, is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide an industrial acid weighing and filling machine. During the industrial acid filling process, when the weighing device detects that the weight of the industrial acid in the dispensing barrel has reached the specified weight, the filling is stopped, thereby improving the filling efficiency and preventing the industrial acid from corroding the weighing device.

[0008] This utility model is implemented as follows: an industrial acid weighing and filling machine, comprising:

[0009] Acid storage tank, acid delivery pipe, filling nozzle, filling hose, solenoid valve, weighing sensor, support platform, operation panel, controller, display screen and corrosion-resistant tray;

[0010] The bottom outlet of the acid storage tank is connected to one end of the acid delivery pipe, and the other end of the acid delivery pipe is connected to the filling nozzle. The solenoid valve is installed on the acid delivery pipe. The upper end of the filling hose is connected to the filling nozzle. The anti-corrosion tray is located below the filling hose. The anti-corrosion tray is also placed on the detection end of the weighing sensor. The weighing sensor is installed on the support platform. The controller is electrically connected to the solenoid valve, the weighing sensor, the operation panel, and the display screen. The operation panel has a weight zeroing button, a weight threshold setting button, and a start filling button.

[0011] Furthermore, it also includes: a dispensing container, which is placed on the anti-corrosion tray, and the lower end of the filling hose extends into the top inlet of the dispensing container.

[0012] Furthermore, it also includes a warning light, which is electrically connected to the controller.

[0013] Furthermore, it also includes: an electronic level gauge, which is installed in the acid storage tank and electrically connected to the controller.

[0014] Furthermore, the controller is a programmable logic controller.

[0015] Furthermore, the anti-corrosion pallet has an inlet / outlet on its left side, a limit baffle on its right side, a front guide plate on its front side, and a rear guide plate on its rear side. A roller is arranged between the front guide plate and the rear guide plate, and multiple rollers are arranged at intervals.

[0016] Compared with the prior art, the beneficial effects or advantages of the present invention are as follows:

[0017] The load cell feeds back the detected weight signal to the controller. When the weight reaches the specified threshold, the controller automatically closes the solenoid valve to stop the filling of industrial acid. The anti-corrosion tray prevents industrial acid from flowing onto the load cell, thus avoiding corrosion damage. The dispensing container is placed on the anti-corrosion tray, and the zeroing button on the control panel resets the display to zero. During the filling process, the display shows the weight change of the industrial acid in the dispensing container, ensuring accurate filling of the required amount of industrial acid. The weight threshold setting button is used to input the specified weight threshold into the controller, and the start filling button opens the solenoid valve. In this invention, during the industrial acid filling process, the load cell acts as a weighing device. When the weight of the industrial acid in the dispensing container reaches the specified weight, the controller automatically closes the solenoid valve to stop filling, improving filling efficiency. Furthermore, any residual industrial acid dripping from the filling hose falls onto the anti-corrosion tray, preventing corrosion of the weighing device. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the industrial acid weighing and filling machine of this utility model.

[0020] Figure 2 This is a schematic diagram showing the connection of the controller, operation panel, display screen, and warning light in this utility model.

[0021] Figure 3 This is a schematic diagram of the trolley aligning with the inlet and outlet of the anti-corrosion tray in this utility model.

[0022] Figure 4 This is a schematic diagram showing the positions of the limiting baffle, front guide plate, rear guide plate, and entrance / exit in this utility model.

[0023] Reference numerals: 1. Acid storage tank; 11. Electronic level gauge; 2. Acid delivery pipe; 3. Filling nozzle; 4. Filling hose; 5. Solenoid valve; 6. Weighing sensor; 7. Support platform; 8. Control panel; 81. Weight zeroing button; 82. Weight threshold setting button; 83. Start filling button; 9. Controller; 10. Anti-corrosion tray; 20. Inlet / outlet; 201. Limit baffle; 202. Front guide plate; 203. Rear guide plate; 204. Roller; 205. Dispensing drum; 30. Warning light; 40. Trolley; 50. Detailed Implementation

[0024] This utility model provides an industrial acid weighing and filling machine. The overall technical concept is as follows:

[0025] First, the operator inputs the specified weight threshold of industrial acid to be filled into the dispensing container into the controller and saves it using the weight threshold setting button on the control panel. The display shows the weight threshold. Then, the empty dispensing container is placed on an anti-corrosion tray, which is placed at the detection end of the weighing sensor. The lower end of the filling hose is then inserted into the top inlet of the dispensing container. The weighing sensor feeds back the detected weight signal to the controller, which displays the detected weight value on the display. The detected weight value is the weight of the anti-corrosion tray plus the weight of the empty dispensing container. Then, the weight value on the display is cleared to zero using the weight zeroing button. By pressing the start filling button, a signal to start filling is sent to the controller, which opens the solenoid valve. The industrial acid in the acid storage tank flows into the dispensing container sequentially through the acid delivery pipe, filling nozzle, and filling hose. The change in the detected weight value displayed on the screen is the change in the weight of the industrial acid in the dispensing container. The controller compares the detected weight value with the preset weight threshold. When the weight of the industrial acid in the dispensing container reaches the preset weight threshold, the controller automatically closes the solenoid valve and stops filling. Workers removed the filling hose from the dispensing container and then moved the container from the anti-corrosion tray. The residual industrial acid from the filling hose dripped onto the anti-corrosion tray to prevent corrosion of the weighing sensor.

[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0027] See Figures 1 to 4 The preferred embodiment of this utility model.

[0028] An industrial acid weighing and filling machine, comprising:

[0029] 1. Acid storage tank; 2. Acid delivery pipe; 3. Filling nozzle; 4. Filling hose; 5. Solenoid valve; 6. Weighing sensor; 7. Support platform; 8. Operation panel; 9. Controller; 10. Display screen; and 20. Corrosion-resistant tray.

[0030] The bottom outlet of the acid storage tank 1 is connected to one end of the acid delivery pipe 2, and the other end of the acid delivery pipe 2 is connected to the filling nozzle 3. The solenoid valve 5 is installed on the acid delivery pipe 2. The upper end of the filling hose 4 is connected to the filling nozzle 3. The anti-corrosion tray 20 is located below the filling hose 4. The anti-corrosion tray 20 is also placed on the detection end of the weighing sensor 6. The weighing sensor 6 is installed on the support platform 7. The controller 9 is electrically connected to the solenoid valve 5, the weighing sensor 6, the operation panel 8, and the display screen 10. The operation panel 8 has a weight zeroing button 81, a weight threshold setting button 82, and a start filling button 83.

[0031] The beneficial effects or advantages of this utility model's technical solution are as follows: The weighing sensor 6 feeds back the detected weight signal to the controller 9. When the specified weight threshold is reached, the controller 9 automatically closes the solenoid valve 5, stopping the filling of industrial acid. The anti-corrosion tray 20 prevents industrial acid from flowing onto the weighing sensor 6, thus avoiding corrosion damage to the weighing sensor 6. The dispensing container 30 is placed on the anti-corrosion tray 20, and then the weight zeroing button 81 on the operation panel 8 is pressed. At this time, the weighing value on the display screen 10 is zeroed. During the subsequent filling process, the display screen 10 displays the industrial acid content in the dispensing container 30. The weight change of the acid solution allows for precise filling of the required industrial acid solution. The weight threshold setting button 82 is used to input the specified weight threshold into the controller 9. The start filling button 83 is used to open the solenoid valve 5 in the controller 9. In the process of filling industrial acid solution, the weighing sensor 6 acts as a weighing device. When the weight of the industrial acid solution in the dispensing tank 30 is detected to reach the specified weight, the controller 9 automatically closes the solenoid valve 5 to stop filling, thereby improving filling efficiency. In addition, the residual industrial acid solution in the filling hose 4 drips onto the anti-corrosion tray 20 to prevent the industrial acid solution from corroding the weighing device.

[0032] The operation panel 8 and the display screen 10 can be separate, with the buttons on the operation panel 8 being physical buttons; alternatively, the operation panel 8 and the display screen 10 can be integrated, such as a touch screen display screen 10. The weight threshold setting button 82 includes numeric keys from zero to nine, a confirmation button, and a delete button. The operation panel 8 also has a pause filling button and a power-on button. The pause filling button is used by the operator to manually close the solenoid valve 5 to stop filling in case of an emergency; the power-on button is used by the operator to supply power to the controller 9, and when the power is off, the solenoid valve 5 is in the closed state.

[0033] Furthermore, it also includes: a dispensing container 30, which is placed on the anti-corrosion tray 20, and the lower end of the filling hose 4 extends into the top inlet of the dispensing container 30.

[0034] Different filling containers 30 have different specifications and therefore different weights. After placing a filling container 30 on the anti-corrosion tray 20, the weight of both the anti-corrosion tray 20 and the filling container 30 is zeroed using the zeroing button 81, which helps to accurately fill the required industrial acid solution. The filling hose 4 can be made of PTFE. The anti-corrosion tray 20 can also be made of PTFE. PTFE has excellent acid resistance and is well resistant to almost all acids.

[0035] Furthermore, it also includes a warning light 40, which is electrically connected to the controller 9.

[0036] The weighing sensor 6 feeds back the detected weight signal to the controller 9. The controller 9 compares the detected weight value with a preset weight threshold. When the weight of the industrial acid in the dispensing container 30 reaches the preset weight threshold, the controller 9 automatically closes the solenoid valve 5, stopping the filling process. Simultaneously, the controller 9 illuminates the warning light 40. Upon seeing the warning light 40, the operator knows that filling is complete and quickly removes the dispensing container 30 from the anti-corrosion tray 20, replacing it with an empty container. This eliminates the need for the operator to monitor the dispensing container 30. The warning light 40 also has an audible alert function.

[0037] Furthermore, it also includes: an electronic level gauge 11, which is installed in the acid storage tank 1 and is electrically connected to the controller 9.

[0038] The electronic level gauge 11 can detect the level of industrial acid in the acid storage tank 1 in real time, and display the level information on the display screen 10 through the controller 9, so that the staff can understand the remaining amount of industrial acid in the acid storage tank 1 and help to submit the filling work arrangement.

[0039] Furthermore, the controller 9 is a programmable logic controller, i.e., a PLC controller.

[0040] Furthermore, the anti-corrosion pallet 20 has an inlet / outlet 201 on the left side, a limit baffle 202 on the right side, a front guide plate 203 on the front side, and a rear guide plate 204 on the rear side. A roller 205 is arranged between the front guide plate 203 and the rear guide plate 204, and multiple rollers 205 are arranged at intervals.

[0041] Workers place the empty dispensing container 30 onto the roller 205 through the inlet / outlet 201, and then push the container 30. The roller 205 facilitates the movement of the container 30. The container 30 stops moving after hitting the limit baffle 202. At this time, the filling hose 4 approaches the top inlet of the container 30. Workers wearing protective gloves insert the filling hose 4 into the top inlet of the container 30. After the industrial acid is filled, the filling hose 4 is removed from the top inlet of the container 30. The container 30 filled with industrial acid is then pushed to the inlet / outlet 201. The trolley 50 is aligned with the inlet / outlet 201 of the anti-corrosion tray 20, and the worker transfers the container 30 from the anti-corrosion tray 20 to the trolley 50. Since the dispensing container 30 containing industrial acid is quite heavy, it is difficult for workers to move it manually. With the help of roller 205, the dispensing container 30 can be easily transferred to trolley 50, and then the trolley 50 can be used to move the dispensing container 30 containing industrial acid away.

[0042] This invention monitors the weight change of the industrial acid in the dispensing tank 30 in real time during the filling process. The controller 9 compares the detected weight value with a preset weight threshold. When the weight of the industrial acid in the dispensing tank 30 reaches the preset weight threshold, the controller 9 automatically closes the solenoid valve 5 to stop filling and improve filling efficiency. After filling is completed, the warning light 40 illuminates to promptly notify the staff. The staff removes the filling hose 4 from the dispensing tank 30. After the dispensing tank 30 is removed, the residual industrial acid in the filling hose 4 drips onto the anti-corrosion tray 20 to prevent corrosion of the weighing sensor 6.

[0043] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An industrial acid weighing and filling machine, characterized in that, include: Acid storage tank, acid delivery pipe, filling nozzle, filling hose, solenoid valve, weighing sensor, support platform, operation panel, controller, display screen and corrosion-resistant tray; The bottom outlet of the acid storage tank is connected to one end of the acid delivery pipe, and the other end of the acid delivery pipe is connected to the filling nozzle. The solenoid valve is installed on the acid delivery pipe. The upper end of the filling hose is connected to the filling nozzle. The anti-corrosion tray is located below the filling hose. The anti-corrosion tray is also placed on the detection end of the weighing sensor. The weighing sensor is installed on the support platform. The controller is electrically connected to the solenoid valve, the weighing sensor, the operation panel, and the display screen. The operation panel has a weight zeroing button, a weight threshold setting button, and a start filling button.

2. The industrial acid weighing and filling machine according to claim 1, characterized in that, Also includes: The dispensing container is placed on the corrosion-resistant tray, and the lower end of the filling hose extends into the top inlet of the dispensing container.

3. The industrial acid weighing and filling machine according to claim 1, characterized in that, Also includes: Warning light, which is electrically connected to the controller.

4. The industrial acid weighing and filling machine according to claim 1, characterized in that, Also includes: An electronic level gauge is installed in the acid storage tank and is electrically connected to the controller.

5. An industrial acid weighing and filling machine according to claim 1, characterized in that, The controller is a programmable logic controller.

6. The industrial acid weighing and filling machine according to claim 1, characterized in that, The corrosion-resistant pallet has an entrance / exit on its left side, a limit baffle on its right side, a front guide plate on its front side, and a rear guide plate on its rear side. A roller is arranged between the front guide plate and the rear guide plate, and multiple rollers are arranged at intervals.

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