Liquid dosing device

Abstract

The utility model discloses a kind of liquid quantitative dropwise adding device, including configuration tank, weighing module for detecting configuration tank and internal material weight and feedback signal, stirrer being arranged in the inside of configuration tank, pyrometer for detecting the temperature of material in configuration tank and feedback signal, dropwise adding pump for accurate quantitative dropwise adding solution, mold temperature machine for configuration tank interlayer heat-conducting oil temperature control heat transfer, first automatic on-off valve being controlled and being arranged on base liquid import pipeline, and second automatic on-off valve being controlled and being arranged on configuration raw liquid import pipeline, realize accurate, quantitative, automatic, uniform dropwise adding liquid, set configuration and dropwise adding function in one, promote the consistency of liquid addition, degree of automation and data traceability.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid quantitative addition equipment, specifically a liquid quantitative addition device that integrates configuration and addition and can achieve precise control, suitable for liquid quantitative addition scenarios in chemical and biological laboratories, chemical, pharmaceutical, food and other industries. Background Technology

[0002] In chemical and biological laboratories, liquids were traditionally added manually using droppers and pipettes, relying on operator experience and prone to poor repeatability due to human error. In the chemical and pharmaceutical industries, adding catalysts, raw materials, and excipients to reaction vessels requires strict control of the dropping speed and quantity; traditional manual methods are insufficient to meet the consistency needs of large-scale production. In the food industry, adding flavorings and colorings requires ensuring the uniformity of each batch, but existing equipment falls short in terms of precise metering in the mixing tanks and overall automated control integration. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model aims to provide a liquid quantitative dripping device that solves the problems of setting up a precise quantitative solution preparation tank and a precise quantitative liquid dripping pump, thereby achieving precise, quantitative, automatic, and uniform liquid dripping and integrating preparation and dripping functions.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A liquid quantitative dispensing device includes a preparation tank, a weighing module for detecting the weight of the preparation tank and the materials inside and feeding back the signal, a stirrer installed inside the preparation tank, a thermometer for detecting the temperature of the materials inside the preparation tank and feeding back the signal, a dispensing pump for accurately dispensing a solution, a mold temperature controller for controlling the temperature and heat transfer of the heat transfer oil in the jacket of the preparation tank, a first automatic switching valve installed on the base liquid inlet pipe and controlled by it, and a second automatic switching valve installed on the preparation raw liquid inlet pipe and controlled by it.

[0006] Further optimization involves providing a base liquid inlet, a raw material inlet, and a solid powder feeding port at the top of the preparation tank.

[0007] Furthermore, the weighing module is located outside the preparation tank and is interlocked with the first automatic switching valve and the second automatic switching valve. Based on the feedback weight signal, it controls the feed rate of the base liquid and the preparation concentrate.

[0008] Furthermore, the agitator is used to stir and mix the materials in the mixing tank, promoting uniform integration of the materials and preventing sedimentation.

[0009] Furthermore, the thermometer and the mold temperature controller work together to collect the temperature of the material inside the tank in real time and provide feedback signals, thereby accurately controlling the heating process and ensuring that the material gradually heats up according to the preset heating gradient, meeting the strict requirements of different processes for temperature changes.

[0010] Furthermore, the drip pump is connected to the outlet of the preparation tank, and quantitative automatic dripping is achieved through the drip liquid outlet to ensure that the liquid is output accurately according to the set parameters.

[0011] Furthermore, the mold temperature controller is connected to the jacket of the preparation tank. By precisely regulating the temperature of the heat transfer oil within the jacket, it indirectly achieves stable temperature control of the materials inside the preparation tank, ensuring that the materials are in a suitable process temperature environment. The device also includes a PLC control cabinet, which is electrically connected to the weighing module, thermometer, stirrer, drip pump, mold temperature controller, first automatic switching valve, and second automatic switching valve. The first and second automatic switching valves are precisely controlled by the PLC control cabinet. Based on the weight signal fed back in real time from the weighing module, they automatically execute opening or closing actions, thereby accurately controlling the feed rate of the base liquid and the preparation concentrate, ensuring accurate material proportions.

[0012] This invention has the following advantages: it integrates preparation and dripping into one unit, eliminating the need for separate solution preparation and dripping equipment, simplifying the production process, reducing equipment footprint, lowering equipment procurement and management costs, and improving production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a liquid quantitative dripping device according to the present invention. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and relevant knowledge. Obviously, the described applications are only some embodiments of the present invention, and not all embodiments.

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] Reference Figure 1 As shown, a liquid quantitative dripping device includes a configuration tank 1, a weighing module 2, a stirrer 3, a thermometer 4, a dripping pump 5, a mold temperature controller 6, a first automatic switching valve 7, a second automatic switching valve 8, and a PLC control cabinet 9.

[0017] The preparation tank 1 is used to contain the base liquid, the preparation stock solution, and the solid powder auxiliary materials for mixing and reaction. It is equipped with a base liquid inlet 10, a preparation stock solution inlet 11, and a solid powder feeding port 12 at the top, and a discharge port at the bottom.

[0018] Weighing module 2 is installed on the outside of the preparation tank 1 to detect the weight of the preparation tank 1 and the materials inside, and feeds the weight signal back to the PLC control cabinet 9. It is interlocked with the first automatic switching valve 7 and the second automatic switching valve 8 to control the feed rate of the base liquid and the preparation concentrate.

[0019] The agitator 3 is installed inside the preparation tank 1 and is used to stir and mix the base liquid, the preparation stock solution, and the solid powder and auxiliary materials to ensure that the materials are mixed evenly and to prevent sedimentation.

[0020] The thermometer 4 is installed on the configuration tank 1 to detect the temperature of the material inside the configuration tank 1 and feeds the temperature signal back to the PLC control cabinet 9, which is interlocked with the mold temperature controller 6 to control the heating process.

[0021] The drip pump 5 is connected to the outlet of the preparation tank 1 and is used to precisely and quantitatively add the prepared solution through the drip liquid outlet 13. Preferably, the drip volume and frequency can be set on the operation panel.

[0022] The mold temperature controller 6 is connected to the jacket of the configuration tank 1 and is used to control the temperature and heat transfer of the heat transfer oil in the jacket of the configuration tank 1, so as to heat the material in the tank according to the temperature gradient.

[0023] The first automatic switching valve 7 is installed on the base liquid inlet pipeline and is preferably controlled by the PLC control cabinet 9. It opens or closes according to the feedback signal from the weighing module 2 to control the feeding of base liquid.

[0024] The second automatic switching valve 8 is installed on the inlet pipeline of the raw material preparation, and is preferably controlled by the PLC control cabinet 9. It opens or closes according to the feedback signal from the weighing module 2 to control the feeding of the raw material preparation.

[0025] PLC control cabinet 9 is electrically connected to weighing module 2, thermometer 4, stirrer 3, drip pump 5, mold temperature controller 6, first automatic switching valve 7, and second automatic switching valve 8 to realize the automated control of the entire device.

[0026] Specifically, the preparation tank 1 serves as a container for holding the base liquid, the preparation stock solution, and solid powder additives, providing a reaction space for solution preparation. Its structural design (multiple inlets at the top and outlet at the bottom) facilitates the addition of materials and the discharge of the prepared solution. It is the basic carrier for the entire solution preparation process, ensuring a stable environment for material mixing and reaction.

[0027] Weighing module 2: Real-time detection of the weight of the preparation tank 1 and its internal materials, converting the weight data into an electrical signal and feeding it back to the PLC control cabinet 9. When the base liquid enters the preparation tank 1 through the first automatic switching valve 7, the weighing module 2 monitors the weight change. Once the set weight value of the base liquid is reached, the feedback signal causes the PLC control cabinet 9 to control the first automatic switching valve 7 to close. Similarly, it controls the feeding of the preparation liquid, achieving precise feeding of the base liquid and the preparation liquid in a precise ratio, avoiding errors from manual weighing, and ensuring that the preparation ratio of each batch of solution is consistent.

[0028] Agitator 3: Stirs the base liquid and the prepared solution in the preparation tank 1 to ensure thorough mixing. After the solid powder additives are manually added, stirring continues to ensure uniform mixing of the powder and liquid, preventing sedimentation and stratification. Continuous stirring improves the uniformity of material mixing and ensures consistent composition of the prepared solution. This ensures stable composition of the added liquid when pumped by drop pump 5, improving the consistency of the dropping effect.

[0029] Thermometer 4 detects the temperature of the material inside the preparation tank 1 and transmits the temperature signal to the PLC control cabinet 9. The mold temperature controller 6 controls the temperature of the heat transfer oil in the jacket of the preparation tank 1. When the thermometer 4 detects that the material temperature has reached the set value, the feedback signal causes the PLC control cabinet 9 to control the mold temperature controller 6 to stop heating; if the temperature is lower than the set value, heating is started, achieving precise temperature control of the material according to the temperature gradient. A suitable and stable temperature environment helps the chemical reaction between materials to proceed fully (if any), or ensures good physical mixing of the materials, thus ensuring the quality of the prepared solution.

[0030] Dropping pump 5: Connects to the outlet of preparation tank 1. Its control panel allows setting the dropping rate and frequency, with precise control within the range of 0.01-1800 ml / min. After startup, it automatically and uniformly adds the prepared solution according to the set parameters, meeting the stringent requirements for dropping speed and quantity in industries such as chemical and pharmaceutical manufacturing. For example, when adding catalysts in chemical reactors, precise dropping can prevent side reactions; in the food industry, it ensures uniform flavoring in each batch of products, improving product quality stability.

[0031] Mold temperature controller 6: Connected to the jacket of preparation tank 1, using internal heat transfer oil as the heat transfer medium. It receives commands from PLC control cabinet 9 to control the temperature of the heat transfer oil, thereby indirectly controlling the temperature of the materials inside preparation tank 1. Through precise temperature control, it provides suitable temperature conditions for material mixing and reaction, adapting to different material characteristics and broadening the device's application range. For example, it can stably control the temperature when preparing temperature-sensitive biological reagents.

[0032] Automatic on / off valve: Installed on the inlet pipelines of the base liquid and the raw material preparation liquid, and controlled by PLC control cabinet 9. Based on the weight signal fed back by weighing module 2, it automatically opens or closes, accurately controlling the timing and amount of feed of base liquid and raw material preparation liquid, replacing manual valve operation, reducing human error, and improving the automation and accuracy of the feeding process.

[0033] PLC control cabinet 9: Receives weight signals from weighing module 2 and temperature signals from thermometer 4, sends start / stop and parameter commands to stirrer 3 and drip pump 5, controls the heating / stopping of mold temperature controller 6, and controls the opening and closing of automatic switching valve.

[0034] Detailed operating procedures:

[0035] Basic liquid feeding: Open the first automatic valve 7 for basic liquid, and the basic liquid begins to flow into the preparation tank 1. The weighing module 2 monitors the weight of the preparation tank 1 and the materials inside in real time. When the weight reaches the set value, the basic liquid feeding stops, achieving precise quantitative feeding of the basic liquid.

[0036] Temperature control preparation: Turn on the heating equipment mold temperature controller 6, which will begin controlling the temperature of the heat transfer oil in the jacket of the preparation tank 1. Thermometer 4 monitors the material temperature in the preparation tank 1 in real time. When the temperature reaches the set value, the mold temperature controller 6 stops heating; when the temperature falls below the set value, the mold temperature controller 6 restarts heating, stabilizing the material temperature in the preparation tank 1 within the set temperature gradient range, thus providing a suitable temperature environment for subsequent material mixing.

[0037] Feeding of raw material: Open the second automatic switch valve 8 to allow the raw material to enter the preparation tank 1. The weighing module 2 also provides real-time weight feedback. Once the set value is reached, the second automatic switch valve 8 closes, and the precise quantitative feeding of the raw material is completed.

[0038] Material mixing: Turn on stirrer 3, and the stirring paddle of stirrer 3 will start to rotate, thoroughly mixing the base liquid and the prepared stock solution to ensure uniform mixing. During the stirring process, stirrer 3 will continue to work to ensure uniform mixing of materials, preparing for the subsequent addition and mixing of solid powder additives.

[0039] Solid powder addition and mixing: Add the solid auxiliary powder into the preparation tank 1 through the manual feeding port at the top of the preparation tank 1 using a measuring instrument. The stirrer 3 continues to stir for the set time to ensure that the solid powder and liquid materials are evenly mixed, prevent powder sedimentation, and ensure that the composition of the prepared solution is uniform.

[0040] Quantitative addition of solution: On the control panel of the dropper pump 5, the operator sets the addition volume and frequency (within the range of 0.01-1800 ml / min) according to production needs. The dropper pump 5 is then started, drawing the prepared solution from the bottom outlet of the preparation tank 1 and automatically and uniformly adding it according to the set parameters, achieving precise quantitative addition of the liquid.

[0041] Although some embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, and all such changes and alterations should fall within the scope of the present invention.

Claims

1. A liquid metering and dispensing device, characterized in that, Includes a preparation tank (1), a weighing module (2) for detecting the weight of the preparation tank (1) and the internal materials and feeding back the signal, a stirrer (3) installed inside the preparation tank (1); a thermometer (4) for detecting the temperature of the materials inside the preparation tank (1) and feeding back the signal, a drip pump (5) for accurately and quantitatively adding the solution; a mold temperature controller (6) for controlling the temperature and heat transfer of the heat transfer oil in the jacket of the preparation tank (1), a first automatic switching valve (7) installed on the basic liquid inlet pipe and a second automatic switching valve (8) installed on the preparation raw liquid inlet pipe.

2. The liquid metering and dispensing device according to claim 1, characterized in that, The top of the preparation tank (1) is provided with a basic liquid inlet (10), a preparation raw liquid inlet (11), and a solid powder feeding port (12).

3. The liquid metering and dispensing device according to claim 1, characterized in that, The weighing module (2) is located outside the configuration tank (1) and is interlocked with the first automatic switching valve (7) and the second automatic switching valve (8). It controls the feed amount of the base liquid and the configuration raw liquid according to the feedback weight signal.

4. The liquid metering and dispensing device according to claim 1, characterized in that, The stirrer (3) is used to stir and mix the materials in the mixing tank (1) to make the materials evenly mixed and prevent sedimentation.

5. The liquid metering and dispensing device according to claim 1, characterized in that, The thermometer (4) is interlocked with the mold temperature controller (6) to control the heating process according to the feedback temperature signal, so as to heat the material in the tank according to the temperature gradient.

6. The liquid metering and dispensing device according to claim 1, characterized in that, The drip pump (5) is connected to the outlet of the configuration tank (1) and performs quantitative automatic dripping through the drip liquid outlet (13).

7. The liquid metering and dispensing device according to claim 1, characterized in that, The mold temperature controller (6) is connected to the jacket of the configuration tank (1) and indirectly controls the temperature of the material in the configuration tank (1) by controlling the temperature of the heat transfer oil in the jacket.

8. The liquid metering and dispensing device according to claim 1, characterized in that, It also includes a PLC control cabinet (9), which is electrically connected to the weighing module (2), thermometer (4), stirrer (3), drip pump (5), mold temperature controller (6), first automatic switching valve (7), and second automatic switching valve (8). The first automatic switching valve (7) and the second automatic switching valve (8) are controlled by the PLC control cabinet (9) and are opened or closed according to the feedback signal from the weighing module (2) to accurately control the feeding of the base liquid and the raw material.

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