Integrated automatic dosing device

Abstract

The utility model discloses an integrated automatic dosing device which comprises a medicine storage tank, a stirring box and a metering pump which are sequentially connected through pipelines and valves, the output end of the metering pump is connected to a water treatment pond, a concentration sensor is assembled in the water treatment pond, a stirring assembly is arranged in the stirring box and comprises a stirring motor connected with a stirring paddle, and the stirring motor is connected with the stirring paddle. The medicine storage tank is provided with a screw medicine feeding device, and the screw medicine feeding device comprises a medicine feeding motor connected with a screw. The concentration sensor, the stirring motor and the medicine feeding motor are all electrically connected with the PLC control system, the concentration of the medicine in the water treatment pond is detected through the concentration sensor, the PLC control system feeds back and adjusts the medicine proportion, and the medicine is mixed with water to form a solution with a certain concentration and then is fed into the water treatment pond through the metering pump. The full-automatic dosing device is simple in structure, and full-automatic dosing work can be achieved completely without manual work.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment equipment technical field especially relates to a kind of automatic dosing device. BACKGROUND

[0002] In the process of wastewater treatment, the key step to achieve water purification is to put medicine into wastewater. The medicine usually includes reaction-type reagent that reacts with pollutants, flocculant that coagulates suspended matter and colloid in water to precipitate and filter, disinfectant for disinfection and sterilization, etc. The effect of wastewater treatment is usually related to the concentration and action time of the medicine. Therefore, it is necessary to detect the concentration of the medicine in the water treatment tank in real time and adjust the amount of medicine accordingly. The current solutions include manual dosing and semi-automatic dosing system. Both dosing methods rely on the experience and judgment of the operator, which can easily lead to inaccurate and unstable dosing, resulting in poor water treatment effect.

[0003] The utility model patent with publication number CN209093254U discloses a kind of full-automatic dosing device, which controls the on-off of electric hydraulic pump on water inlet and medicine inlet by control box, realizes that dosing device automatically feeds, but cannot monitor and dynamically adjust the concentration of medicine in water treatment tank in real time. UTILITY MODEL CONTENT

[0004] The utility model aims to overcome the technical problem that the existing technology cannot completely separate from manual operation during manual dosing and semi-automatic dosing of water treatment tank, and provides an automatic dosing device to realize dynamic automatic control from medicine quantification, delivery to detection, and optimize the use efficiency of reagent.

[0005] To achieve the above-mentioned purpose, the utility model provides the technical scheme as follows:

[0006] An integrated automatic dosing device includes a base, and the base is fixedly provided with:

[0007] A stirring tank is provided with a water inlet pipe and a stirring assembly. The stirring assembly includes a stirring motor, and the output end of the stirring motor is connected to a stirring paddle arranged inside the stirring tank. The stirring tank is connected to the input end of a metering pump through a pipeline and a first electronic valve. The water inlet pipe is provided with a second electronic valve. The output end of the metering pump is connected to a water treatment tank. The water treatment tank is provided with a concentration sensor. An electric contact type liquid level meter is also arranged inside the stirring tank.

[0008] A medicine storage tank is connected to the stirring tank through a screw rod medicine feeding device. The screw rod medicine feeding device includes a medicine feeding pipe and a medicine feeding motor. A screw rod is arranged along the axial direction of the medicine feeding pipe through the medicine feeding pipe. The output end of the medicine feeding motor is fixedly connected to the screw rod.

[0009] The PLC control cabinet comprises a touch screen, and the PLC control cabinet is electrically connected with a stirring motor, a medicine feeding motor, a concentration sensor, an electric contact liquid level meter and a metering pump.

[0010] Further, the lower part of the stirring tank is communicated with a blowdown pipe through a third electronic valve, and the third electronic valve is electrically connected with the PLC control cabinet.

[0011] Further, the upper part of the stirring tank is communicated with an overflow pipe, and the overflow pipe is communicated with the blowdown pipe.

[0012] Further, a flushing system is arranged on the top of the stirring tank, the flushing system is communicated with a water inlet pipe, and the flushing system comprises a fourth electronic valve, a pressure pump and a water gun, a spray head of the water gun is opposite to the inside of the stirring tank, and the fourth electronic valve is electrically connected with the PLC control cabinet.

[0013] Further, a temperature sensor and a first pressure sensor are arranged on the side of the stirring tank, and the temperature sensor and the first pressure sensor are electrically connected with the PLC control cabinet.

[0014] Further, a filter is arranged on the pipeline between the stirring tank and the metering pump, and the filter is preferably a Y-shaped filter.

[0015] Further, a second pressure sensor is arranged on the pipeline communicated with the metering pump and the water treatment tank, and the second pressure sensor is electrically connected with the PLC control cabinet.

[0016] Further, a buffer is arranged on the pipeline between the metering pump and the water treatment tank.

[0017] Further, a flow meter is arranged on the pipeline communicated with the metering pump and the water treatment tank, and the flow meter is electrically connected with the PLC control cabinet.

[0018] Further, a flame arrester is arranged on the top of the stirring tank.

[0019] Further, an electronic overflow valve is arranged on the pipeline communicated with the metering pump and the water treatment tank, an output end of the electronic overflow valve is connected back to the stirring tank, and the electronic overflow valve is electrically connected with the PLC control cabinet.

[0020] Further, a plurality of medicine storage tanks are arranged, and the plurality of medicine storage tanks are separately stored with different medicines, and the medicines comprise PAC (polyaluminum chloride) and PAM (polyacrylamide).

[0021] The advantages and beneficial effects of the utility model lie in:

[0022] 1. The cooperation of the metering pump and the concentration sensor can accurately control the addition amount of the medicament, ensure the medicament concentration stability in the water treatment process, monitor the key parameters in the water treatment process in real time, ensure the system operation state, and improve the water treatment effect.

[0023] 2、 Through the accurate control of the medicine feeding motor, the medicine usage is avoided to be wasted, the automation operation reduces the labor cost, and the long-term operation has higher economic benefits.

[0024] 3、 The PLC control system is electrically connected with the stirring motor, the medicine feeding motor, the metering pump and other key components, so that the automatic control of the medicine adding process is realized, the manual intervention is reduced, and the operation efficiency is improved.

[0025] 4、 The flushing system is convenient for regularly cleaning the stirring box, reduces the maintenance workload, and the buffer, the flame arrester and the electronic overflow valve are used, so that the whole device is safer and more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of an embodiment of the utility model;

[0027] In the drawing:

[0028] 1-base, 2-stirring box, 3-water inlet pipe, 4-stirring motor, 5-stirring paddle, 6-first electronic valve, 7-second electronic valve, 8-metering pump, 9-water treatment tank, 10-concentration sensor, 11-electric contact type liquid level meter, 12-medicine storage tank, 13-medicine feeding pipe, 14-medicine feeding motor, 15-screw rod, 16-PLC control cabinet, 17-touch screen, 18-third electronic valve, 19-drain pipe, 20-overflow pipe, 21-flame arrester, 22-fourth electronic valve, 23-pressurizing pump, 24-water gun, 25-temperature sensor, 26-first pressure sensor, 27-filter, 28-second pressure sensor, 29-flow meter, 30-buffer, 31-electronic overflow valve. DETAILED DESCRIPTION

[0029] The specific embodiment of the utility model is further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0030] Embodiment

[0031] Please refer to Figure 1 An integrated automatic dosing device, including base 1, base 1 is fixedly provided with:

[0032] The stirring box 2 is provided with a water inlet pipe 3 and a stirring assembly, the stirring assembly comprises a stirring motor 4, an output end of the stirring motor 4 is connected to a stirring paddle 5 arranged inside the stirring box 2, the stirring box 2 is connected to an input end of a metering pump 8 through a pipeline and a first electronic valve 6, the water inlet pipe 3 is provided with a second electronic valve 7, an output end of the metering pump 8 is connected to a water treatment tank 9, the water treatment tank 9 is provided with a concentration sensor 10, and the inside of the stirring box is further provided with an electric contact type liquid level meter 11.

[0033] The medicine storage tank 12 is connected to the stirring box 2 through a screw rod medicine feeding device, the screw rod medicine feeding device comprises a medicine feeding pipe 13 and a medicine feeding motor 14, a screw rod 15 is arranged axially through the medicine feeding pipe 13, and an output end of the medicine feeding motor 14 is fixedly connected with the screw rod 15.

[0034] The PLC control cabinet 16 comprises a touch screen 17, and the PLC control cabinet 16 is electrically connected with the stirring motor 4, the medicine feeding motor 14, the concentration sensor 10, the electric contact type liquid level meter 11 and the metering pump 8.

[0035] The lower part of the stirring box 2 is communicated with a blowdown pipe 19 through a third electronic valve 18, and the upper part of the stirring box 2 is provided with an overflow pipe 20 communicated with the blowdown pipe 19. The top of the stirring box 2 is provided with a flame arrester 21 and a flushing system, the flushing system is communicated with the water inlet pipe 3, and the flushing system comprises a fourth electronic valve 22, a pressure pump 23 and a water gun 24, a spray head of the water gun 24 is opposite to the inside of the stirring box 2. The side of the stirring box 2 is provided with a temperature sensor 25 and a first pressure sensor 26. The third electronic valve 17, the fourth electronic valve 22, the temperature sensor 25 and the first pressure sensor 26 are electrically connected with the PLC control cabinet 16.

[0036] The pipeline between the stirring box 2 and the metering pump 8 is further provided with a filter 27. The filter 27 is preferably a Y-shaped filter. The pipeline communicated with the metering pump 8 and the water treatment tank 9 is provided with a second pressure sensor 28, a flow meter 29, a buffer 30 and an electronic overflow valve 31, an output end of the electronic overflow valve 31 is connected back to the stirring box 2, and the second pressure sensor 28, the flow meter 29 and the electronic overflow valve 31 are electrically connected with the PLC control cabinet 16.

[0037] The medicine storage tank 12 can be alternatively provided with a plurality of medicine storage tanks 12, the plurality of medicine storage tanks 12 are respectively connected with different screw rod medicine feeding devices and are separately filled with different medicines, and the medicines can be alternatively selected from PAC and PAM.

[0038] Working principle:

[0039] The required medicament is preloaded in the storage tank. When the medicament needs to be added, the PLC control system starts the feeding motor according to the liquid level meter signal to drive the screw to rotate, and the medicament is sent from the storage tank to the mixing box through the feeding pipe. The second electronic valve of the water inlet pipe is opened, and water is introduced into the mixing box. The stirring motor is started to drive the stirring paddle to rotate, so that the medicament and water are fully mixed to form a liquid medicine. When the liquid medicine in the mixing box reaches a predetermined liquid level, the electric contact liquid level meter sends a signal to the PLC control cabinet. The PLC control cabinet controls the first electronic valve to open, and the metering pump is started to pump the liquid medicine from the mixing box into the water treatment tank.

[0040] The concentration sensor in the water treatment tank monitors the concentration of the liquid medicine in real time. If the concentration is lower than the set value, the PLC control cabinet will control the metering pump to increase the delivery amount of the liquid medicine; if the concentration is higher than the set value, the delivery amount of the liquid medicine will be reduced to maintain the concentration of the liquid medicine within the ideal range. The whole process is monitored and controlled by the PLC control cabinet through the touch screen. The user can set the liquid medicine concentration, liquid level and other parameters through the touch screen, and the PLC control cabinet automatically adjusts the working state of the stirring motor, the feeding motor, the metering pump and the like according to the set parameters, to ensure the automation and accurate control of the water treatment process.

[0041] The temperature sensor on the side of the mixing box monitors the temperature of the liquid medicine to ensure that the liquid medicine is mixed at an appropriate temperature. The first pressure sensor monitors the internal pressure of the mixing box to prevent abnormal pressure.

[0042] The liquid medicine is filtered through the filter to remove possible impurities and ensure the quality of the liquid medicine. The metering pump accurately controls the delivery amount of the liquid medicine according to the feedback of the concentration sensor. The second pressure sensor monitors the pressure during the delivery of the liquid medicine, and the pressure difference between the two pressure sensors can also be used to judge the blockage of the filter. The flow meter measures the flow of the liquid medicine to ensure stable delivery. The electronic overflow valve adjusts the flow of the liquid medicine as needed, and the excess liquid medicine flows back to the mixing box to realize closed-loop control. The third electronic valve at the lower part of the mixing box controls the blowdown pipe for periodic discharge of the sediment or cleaning in the mixing box. The overflow pipe at the upper part of the mixing box is connected with the blowdown pipe to prevent the liquid level in the mixing box from being too high. An optional flame arrester is installed at the top to prevent external fire sources from entering and improve safety. The flushing system periodically cleans the inside of the mixing box through the fourth electronic valve, the pressure pump and the water gun to keep the equipment clean. Multiple storage tanks are respectively filled with different medicaments such as PAC and PAM, and the PLC control cabinet sends them into the mixing box through the respective screw feeding devices to realize accurate proportioning and mixing of multiple medicaments.

[0043] The above is only a preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the technical principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. An integrated automatic dosing device comprising a base, characterized in that: The base is fixedly provided with: The stirring box is provided with a water inlet pipe and a stirring assembly. The stirring assembly comprises a stirring motor. The output end of the stirring motor is connected to a stirring paddle arranged inside the stirring box. The stirring box is connected to the input end of the metering pump through a pipeline and a first electronic valve. The water inlet pipe is provided with a second electronic valve. The output end of the metering pump is connected to the water treatment tank. The water treatment tank is provided with a concentration sensor. The stirring box is further provided with an electric contact type liquid level meter inside; The medicine storage tank is connected to the stirring box through a screw rod medicine feeding device. The screw rod medicine feeding device comprises a medicine feeding pipe and a medicine feeding motor. A screw rod is arranged in the medicine feeding pipe in an axial direction of the medicine feeding pipe. The output end of the medicine feeding motor is fixedly connected to the screw rod. The PLC control cabinet comprises a touch screen. The PLC control cabinet is electrically connected to the stirring motor, the medicine feeding motor, the concentration sensor, the electric contact type liquid level meter and the metering pump.

2. The integrated automatic dosing device according to claim 1, characterized in that: The lower part of the stirring box is communicated with a blowdown pipe through a third electronic valve. The third electronic valve is electrically connected to the PLC control cabinet.

3. The integrated automatic dosing device according to claim 2, characterized in that: The upper part of the stirring box is communicated with an overflow pipe. The overflow pipe is communicated with the blowdown pipe.

4. The integrated automatic dosing device according to claim 3, characterized in that: The top of the stirring box is provided with a flushing system. The flushing system is communicated with the water inlet pipe. The flushing system comprises a fourth electronic valve, a pressure pump and a water gun. The water gun is opposite to the inside of the stirring box. The fourth electronic valve is electrically connected to the PLC control cabinet.

5. The integrated automatic dosing device of claim 1, wherein: The side of the stirring box is provided with a temperature sensor and a first pressure sensor. The temperature sensor and the first pressure sensor are electrically connected to the PLC control cabinet.

6. The integrated automatic dosing device according to claim 5, characterized in that: A filter is further arranged between the stirring box and the metering pump. A second pressure sensor is further arranged between the metering pump and the water treatment tank. The second pressure sensor is electrically connected to the PLC control cabinet.

7. The integrated automatic dosing device of claim 1, wherein: A buffer is further arranged between the metering pump and the water treatment tank.

8. The integrated automatic dosing device of claim 1, wherein: A flow meter is further arranged between the metering pump and the water treatment tank. The flow meter is electrically connected to the PLC control cabinet.

9. The integrated automatic dosing device of claim 1, wherein: The top of the stirring box is provided with a flame arrestor.

10. The integrated automatic dosing device of claim 1, wherein: An electronic overflow valve is further arranged between the metering pump and the water treatment tank. The output end of the electronic overflow valve is connected back to the stirring box. The electronic overflow valve is electrically connected to the PLC control cabinet.

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