Butanone solution preparation device

Abstract

The butanone solution preparation device is characterized by comprising a first storage device, a second storage device, a mixing container, a first flow guide pipe, a second flow guide pipe, a first peristaltic pump, a second peristaltic pump, a first control valve, a second control valve, an electronic scale and a PLC (Programmable Logic Controller). The feeding end of the first flow guide pipe extends into the first storage, and the discharging end of the first flow guide pipe is connected with the feeding hole of the mixing container; the feeding end of the second flow guide pipe extends into the second storage, and the discharging end of the second flow guide pipe is connected with the feeding hole of the mixing container; and the electronic scale is arranged below the mixing container and is used for weighing. The metering device has the advantages of being accurate in metering, high in efficiency and good in safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to a solution preparation device, especially a preparation device of butanone solution. BACKGROUND

[0002] Butanone, namely methyl ethyl ketone, is an organic compound, is a colorless transparent liquid, has the smell similar to acetone, and is volatile. Preparing butanone solution is an indispensable step in the performance test of the odor reduction degree of a range hood, the change of the butanone concentration in a room before and after the range hood is opened is detected to determine the value of the odor reduction degree of the range hood, and preparing butanone solution before the test is also an indispensable preparation step. According to the requirements of GBT 17713-2022 range hood and other cooking fume suction and exhaust devices, butanone solution should be a mixture of 300g of distilled water and 12g of butanone.

[0003] At present, there is no special butanone solution preparation device, and basically manual operation is adopted, which has the following disadvantages: first, manual operation leads to inaccurate concentration and human error; second, butanone has strong corrosive and irritating odor, and it is inevitable to touch butanone during manual pouring, which causes certain harm to the human body; third, butanone solution needs to be prepared manually before each test, which is not efficient. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem in the prior art and provides a butanone solution preparation device which is accurate and safe.

[0005] The utility model adopts the technical scheme that a butanone solution preparation device comprises

[0006] A first storage device is used to store distilled water.

[0007] A second storage device is used to store butanone.

[0008] A mixing container is used to mix butanone solution.

[0009] A first flow guide pipe is provided with a feeding end and a discharging end, the feeding end of the first flow guide pipe is inserted into the first storage device, and the discharging end of the first flow guide pipe is connected to the feeding port of the mixing container.

[0010] A second flow guide pipe is provided with a feeding end and a discharging end, the feeding end of the second flow guide pipe is inserted into the second storage device, and the discharging end of the second flow guide pipe is connected to the feeding port of the mixing container.

[0011] A first peristaltic pump is arranged on the first flow guide pipe.

[0012] A second peristaltic pump is arranged on the second flow guide pipe.

[0013] A first control valve is used to control the opening and closing of the first flow guide pipe.

[0014] The second control valve is used to control the opening and closing of the second guide pipe;

[0015] An electronic scale, placed below the aforementioned mixing container, is used for weighing; and

[0016] The PLC controller is connected to the aforementioned first control valve, second control valve, and electronic scale.

[0017] The mixing container is equipped with a blade stirrer for agitating the solution. After the solution is prepared, the blade stirrer can be turned on to allow it to be stirred evenly, which reduces manual stirring operations and also reduces contact with methyl ethyl ketone (MEK).

[0018] The second storage device is equipped with a condenser tube that can cool methyl ethyl ketone (MEK). Because MEK is easily volatile when heated, the condenser tube allows for low-temperature storage, thus preventing MEK from evaporating and being released into the air for inhalation.

[0019] A suction tube connects the second storage device to the mixing container. The inlet end of the suction tube extends into the mixing container near the bottom, and the outlet end connects to the second storage device. A third peristaltic pump and a third control valve are mounted on the suction tube; the aforementioned third control valve is connected to a PLC controller. Butanone (MEK) is a controlled consumable; to avoid waste, after MEK drips, excess MEK can be drawn into the second storage device through the suction tube, preventing waste liquid from polluting the environment.

[0020] Compared with existing technologies, the advantages of this invention are: Precise measurement: Using an electronic scale and PLC controller, each raw material is accurately measured according to the preset formula requirements, ensuring the accuracy of the measurement results. Increased efficiency: The automatic liquid preparation device can significantly improve the efficiency of liquid preparation, reduce the time and cost of manual operation, and reduce the risk of human error. Enhanced safety: Butanone has certain hazards to the human body; the automatic liquid preparation device can reduce the operator's direct contact with hazardous sources, improving work safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0022] Figure 2 This is a control principle diagram for an example. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 and Figure 2As shown, the butanone solution preparation device in this embodiment includes a first memory 1, a second memory 2, a mixing container 3, an electronic scale 4, a first guide tube 11, a second guide tube 21, an extraction tube 31, a mixing container 3, a first peristaltic pump 12, a second peristaltic pump 22, a third peristaltic pump 32, a first control valve 13, a second control valve 23, a third control valve 33, and a PLC controller 100.

[0025] The first memory 1 is used to store distilled water, and the first memory 1 has a distilled water adding port.

[0026] The second storage device 2 is used to store methyl ethyl ketone (MEK) and is a sealed container to prevent MEK from evaporating. The second storage device 2 is equipped with a condenser 24 to cool the MEK. Because MEK is easily volatile when heated, the condenser allows for low-temperature storage, thus preventing MEK from evaporating and being released into the air for inhalation.

[0027] The mixing container 3 is used to mix the butanone solution; the mixing container 3 is equipped with a blade stirrer 34 that can stir the solution to make it evenly mixed.

[0028] The inlet end of the first guide pipe 11 extends into the first storage container 1, and the outlet end is connected to the inlet of the mixing container 3; the inlet end of the second guide pipe 21 extends into the second storage container 2, and the outlet end is connected to the inlet of the mixing container 3; a first peristaltic pump 12 is mounted on the first guide pipe 11; a second peristaltic pump 22 is mounted on the second guide pipe 21; a first control valve 13 is used to control the on / off state of the first guide pipe 11; a second control valve 23 is used to control the on / off state of the second guide pipe 21. In this embodiment, the first guide pipe 11, the second guide pipe 21, and the third guide pipe 31 are all flexible hoses.

[0029] The extraction tube 31 is connected between the second storage 2 and the mixing container 3. The feed end of the extraction tube 31 extends into the mixing container 3 near the bottom, and the discharge end is connected to the second storage 2. The extraction tube 31 is equipped with a third peristaltic pump 32 and a third control valve 33.

[0030] The electronic scale 4 is placed below the mixing container 3 for weighing; the PLC controller 100 is connected to the first control valve 13, the second control valve 23, the third control valve 33 and the electronic scale 4.

[0031] When the operator needs to prepare the solution, simply pour distilled water into the first storage container 1 and methyl ethyl ketone into the second storage container 2. Alternatively, some extra water can be poured in for storage so that it can be used for the next solution preparation.

[0032] First, we need to prepare 12g of methyl ethyl ketone (MEK). The PLC controller 100 opens the second control valve, while the first control valve is closed. When MEK enters the mixing container through the second guide tube and the electronic scale reads 12g, the PLC controller closes the second control valve and simultaneously opens the first control valve. At this time, distilled water flows into the mixing container through the first guide tube. When the electronic scale displays 312g, the PLC controller closes the first control valve, and the solution preparation is complete.

[0033] After preparing the solution according to the formula, turn on the blade stirrer 34 to stir it evenly, which can reduce manual stirring operations and reduce contact with methyl ethyl ketone.

[0034] Butanone is a controlled consumable. To avoid waste, if there is any excess butanone after the liquid is dispensed during the preparation process, it can be extracted into the second storage tank through the extraction tube to avoid waste liquid pollution to the environment.

Claims

1. A device for preparing butanone solution, characterized in that... The utility model relates to a kind of preparation device of butanone solution, including First memory (1), for storing distilled water; Second memory (2), for storing butanone; Mixing container (3), for matching butanone solution; First flow guide pipe (11), inlet end extends into the aforementioned first memory (1), outlet end connects the feed inlet of the aforementioned mixing container (3); Second flow guide pipe (21), inlet end extends into the aforementioned second memory (2), outlet end connects the feed inlet of the aforementioned mixing container (3); First peristaltic pump (12), is equipped on the aforementioned first flow guide pipe (11); Second peristaltic pump (22), is equipped on the aforementioned second flow guide pipe (21); First control valve (13), for controlling the on-off of first flow guide pipe (11); Second control valve (23), for controlling the on-off of second flow guide pipe (21); Electronic scale (4), is placed below the aforementioned mixing container (3), for weighing;And PLC controller (100), and the first control valve (13) of the aforementioned, second control valve (23) and electronic scale (4) are all control connection.

2. The butanone solution dispensing apparatus according to claim 1, wherein The mixing container (3) is equipped with the blade stirrer (34) that can be stirred to solution.

3. The butanone solution dispensing apparatus according to claim 1, wherein The second memory (2) is equipped with the condenser pipe (24) that can be cooled to butanone.

4. The butanone solution dispensing apparatus according to claim 1, wherein The second memory (2) and mixing container (3) are connected with extraction pipe (31), the inlet end of the extraction pipe (31) extends into the position close to the bottom of mixing container (3), outlet end accesses second memory (2), the third peristaltic pump (32) and third control valve (33) are equipped on the extraction pipe (31);The aforementioned third control valve (33) is connected with PLC controller (100).

Images