CN114452917A - Production line for preparing nano material - Google Patents

Abstract

The invention discloses a production line for preparing nanomaterials, which comprises a host computer, an electric control cabinet, a reaction device and an array conveying device. The lower part of the side wall of the tank is equipped with a reaction tank discharge port; the reaction tank is connected with the agitator; each group of conveying devices includes a material storage tank connected with the corresponding reaction tank feed port through a material conveying pipe, and the material conveying pipe is connected to the corresponding reaction tank feed port. A metering pump, pressure sensor, flow meter, flow transmitter and electronically controlled switch valve are installed. In the present invention, several material conveying pipelines are connected with the reaction tank, and through the detection data of the flow transmitter and the pressure sensor, the upper computer can monitor the material flow in real time, realize the precise control of chemical raw materials, and stir the raw materials through the agitator. , so that the raw materials are evenly mixed and fully reacted to generate high-quality nanomaterials.

Description

A production line for preparing nanomaterials

technical field

The invention relates to the technical field of nanomaterial production equipment, in particular to a production line for preparing nanomaterials.

Background technique

The preparation of nanomaterials usually requires that a variety of chemical raw materials are simultaneously put into the reaction tank according to a certain ratio, and the precipitation reaction occurs. The problems existing in the existing nanomaterial production equipment are: the unstable flow of chemical raw materials leads to the inability of the raw materials to enter the reaction tank in proportion, resulting in excess waste of raw materials; the chemical raw materials in the reaction tank are not mixed quickly and evenly, resulting in insufficient reaction; Unable to adapt to different precipitation reactions, the concentration of chemical raw materials involved in the reaction, the transport flow and the mixing speed between raw materials have different requirements.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a production line for preparing nanomaterials, with precise measurement, uniform stirring, adjustable parameters, and real-time monitoring of the preparation process.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present invention is:

A production line for preparing nanomaterials, which includes interconnected reaction devices and array conveying devices installed on a rack, the reaction device includes a reaction tank, and the top cover of the reaction tank is provided with several reaction tank feed ports, and the The lower part of the side wall is installed with the discharge port of the reaction tank; the stirring shaft of the agitator runs through the top cover of the reaction tank, the stirring impeller installed at the bottom of the stirring shaft is suspended in the inner cavity of the reaction tank, the top of the stirring shaft is connected with the motor, and the motor It is fixed on the motor bracket, and the motor bracket is installed on the side wall of the reaction tank;

Each group of the conveying devices includes a material storage tank, the discharge port of the material storage tank is connected with the corresponding feed port of the reaction tank through an independent material conveying pipeline, and the discharge port of the material storage tank is installed with a first electric control switch A metering pump, a pressure sensor, a flowmeter and a flow transmitter are installed on each material conveying pipeline in sequence according to the direction of material flow, and a three-way valve and a third electronic control switch are also installed on the connecting pipeline between the flowmeter and the reaction tank. , the third port of the three-way valve is connected with one end of the material return pipe, the other end of the material return pipe is connected with the feed port of the storage tank, and a second electronically controlled on-off valve is installed on the material return pipe;

The first electric control switch valve, the second electric control switch valve, the flow meter, the metering pump and the control switch of the motor are all installed in the electric control cabinet, the electric control cabinet is connected with the host computer, and the pressure sensor and flow transmitter are connected with the host computer. machine connection.

Preferably, the reaction tank is connected with a cleaning device, the cleaning device includes a self-priming pump and a washing liquid tank, the self-priming pump communicates with the upper cleaning port provided at the top of the reaction tank through an upper washing liquid pipeline, and the self-priming pump also passes through The lower washing liquid pipeline is communicated with the lower cleaning port arranged at the bottom of the reaction tank; the upper washing liquid pipeline is installed with a fourth electronically controlled switch valve, and the lower washing liquid pipeline is equipped with a fifth electronically controlled switching valve; the fourth electronically controlled switch The valve, the fifth electric control switch valve and the control switch of the self-priming pump are all installed in the electric control cabinet.

Preferably, a check valve is installed between the metering pump and the flow meter on the material conveying pipeline.

Preferably, a filter is installed at the discharge port of the storage tank.

The working process of the present invention is:

The operator pours the prepared alkali solution, salt solution, coating agent and other chemical raw materials into different storage tanks respectively, sets the flow rate of the material according to the amount of chemical raw materials, and controls the first electric control switch valve and the second electric control valve. The control switch valve is opened, the third electronic control switch valve is closed, the metering pump is started to work, the chemical raw material flows out from the discharge port at the bottom of the storage tank, flows along the material conveying pipeline to the material return pipeline, and returns to the storage tank ; After the flow transmitter detects that the material flow is stable, it indicates that the conveying device has the conditions for conveying chemical raw materials, open the third electronically controlled switch valve, close the second electronically controlled switch valve at the same time, and start the stirring motor. The stirring speed of the motor is 2000. -5000r/min, the chemical raw materials are transported to the reaction tank according to the set flow rate, and the adjustable delivery flow rate of 200-500ml/min under normal temperature and normal pressure environment, together with other chemical raw materials delivered at the same time in the reaction tank Instantaneous mixing and precipitation reaction occur. After stirring by a stirrer, the nano-reaction environment is simulated, and the pH value is allowed to change within 2-13 during the reaction to prepare nano-materials. The preparation of different nanomaterials varies according to the flow rate, rotation speed and pH value required for the actual proportioning. After the reaction is completed, the compound flows out of the reaction tank from the discharge port of the reaction tank.

After the reaction tank is emptied, the operator starts the self-priming pump, and the cleaning liquid in the washing liquid tank flows into the reaction tank from the upper cleaning port and the lower cleaning port of the reaction tank respectively, and the inner wall of the reaction tank is cleaned. It is discharged from the slag discharge port at the bottom of the reaction tank.

The beneficial effects of the present invention are:

(1) In the present invention, several material conveying pipelines are connected with the reaction tank. Through the detection data of the flow transmitter and the pressure sensor, the upper computer can monitor the material flow in real time, realize the precise control of chemical raw materials, and control the chemical raw materials through the agitator. The raw materials are stirred, so that the raw materials are evenly mixed and fully reacted to generate high-quality nanomaterials;

(2) The present invention can control the addition amount and mixing speed of different chemical raw materials through the host computer according to the type of the prepared nanomaterials, and is suitable for the preparation of various nanomaterials;

(3) In the present invention, after the production of a nanomaterial is completed, the reaction tank is cleaned by a flushing device, leaving no residue, which is convenient for re-production;

(4) The present invention is controlled by the upper computer and the electric control cabinet, which improves the automation of the production line, and can set production process parameters according to different production requirements, with precise measurement and controllable parameters.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the working block diagram of the present invention;

Fig. 3 is the structural representation of the conveying device;

Fig. 4 is the structural representation of reaction device;

Fig. 5 is the structural representation of cleaning device;

In the figure: 1. Rack, 2. Cleaning device, 3. Reaction device, 4. Conveying device, 5. First electronically controlled switch valve, 6. Storage tank, 7. Filter, 8. Second electronically controlled switch Valve, 9, Check valve, 10, Flow transmitter, 11, Third electronically controlled switch valve, 12, Feed inlet of reaction tank, 13, Material return pipeline, 14, Material conveying pipeline, 15, Reaction tank, 16 , flowmeter, 17, pressure sensor, 18, metering pump, 19, motor bracket, 20, agitator, 21, motor, 22, upper cleaning port, 23, fourth electronically controlled switch valve, 24, self-priming pump, 25 , lotion tank, 26, fifth electric control valve, 27, lower cleaning port, 28, upper computer, 29, electric control cabinet, 30, upper lotion pipeline, 31, lower lotion pipeline, 32, reaction tank outlet Feed mouth.

Detailed ways

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

As shown in Figures 1 to 5, a production line for preparing nanomaterials includes interconnected reaction devices 3 and array conveying devices 4 installed on a rack 1. The reaction device 3 includes a reaction tank 15. The top cover is provided with several reaction tank feed ports 12, and the lower part of the side wall of the reaction tank 15 is provided with a reaction tank discharge port 32; The impeller is suspended in the inner cavity of the reaction tank 15, the top of the stirring shaft is connected with the motor 21, the motor 21 is fixed on the motor support 19, and the motor support 19 is installed on the side wall of the reaction tank 15;

Each group of the conveying devices 4 includes a material storage tank 6 , the discharge port of the material storage tank 6 is connected with the corresponding reaction tank feed port 12 through an independent material conveying pipeline 14 , and the discharge port of the material storage tank 6 is installed There is a first electronically controlled switch valve 5, and each material conveying pipeline 14 is sequentially installed with a metering pump 18, a pressure sensor 17, a flowmeter 16 and a flow transmitter 10 according to the direction of material flow. A three-way valve and a third electronic control switch 12 are also installed on the connecting pipeline. The third port of the three-way valve is connected to one end of the material return pipeline 13, and the other end of the material return pipeline 13 is connected to the feed port of the storage tank 6. A second electronically controlled on-off valve 8 is installed on the material return pipeline 13;

The control switches of the first electric control switch valve 5, the second electric control switch valve 8, the flow meter 16, the metering pump 18 and the motor 21 are all installed in the electric control cabinet 29, and the electric control cabinet 29 is connected with the upper computer 28, and the pressure The sensor 17 and the flow transmitter 10 are connected to the upper computer 28 .

The reaction tank 15 is connected with the cleaning device 2, and the cleaning device 2 includes a self-priming pump 24 and a washing liquid tank 25. The self-priming pump 24 communicates with the upper cleaning port 22 arranged at the top of the reaction tank 15 through the upper washing liquid pipeline 30, and is self-priming. The suction pump 24 is also communicated with the lower cleaning port 37 arranged at the bottom of the reaction tank 15 through the lower washing liquid pipeline 31; Five electronically controlled on-off valves 26 ; the fourth electronically-controlled on-off valve 23 , the fifth electronically-controlled on-off valve 26 and the control switches of the self-priming pump 24 are all installed in the electronic control cabinet 29 .

A check valve 9 is installed on the material conveying pipeline 14 between the metering pump 18 and the flow meter 16 .

A filter 7 is installed at the discharge port of the storage tank 6 .

The working process of the present invention is:

The operator pours the prepared alkali solution, salt solution, coating agent and other chemical raw materials into different storage tanks 6 respectively, sets the flow rate of the material according to the amount of chemical raw materials, and controls the first electronically controlled on-off valve 5 and the second one. The second electronically controlled on-off valve 8 is opened, the third electronically controlled on-off valve 11 is closed, the metering pump 18 is started to work, the chemical raw material flows out from the bottom discharge port of the storage tank 6, and flows along the material conveying pipeline 14 to the material return pipeline 13 , and return to the storage tank 6; after the flow transmitter 10 detects that the material flow is stable, it indicates that the conveying device 4 has the conditions for conveying chemical raw materials, open the third electronically controlled switch valve 11, and close the second electronically controlled switch at the same time. Valve 8, start the stirring motor 21, the stirring speed of the motor is 2000-5000r/min, the chemical raw materials are transported to the reaction tank 15 according to the set flow rate, and can be adjusted at a rate of 200-500ml/min under normal temperature and normal pressure. The conveying flow is instantly mixed with other chemical raw materials conveyed at the same time in the reaction tank 15, and a precipitation reaction occurs. After stirring by the agitator 20, the nano-reaction environment is simulated, and the pH value is allowed to change within 2-13 during the reaction. Material. The preparation of different nanomaterials varies according to the flow rate, rotation speed and pH value required for the actual proportioning. After the reaction is completed, the compound flows out of the reaction tank 15 from the discharge port 32 of the reaction tank.

After the reaction tank 15 is emptied, the operator starts the self-priming pump 24, and the cleaning liquid in the washing liquid tank 25 flows into the reaction tank 15 from the upper cleaning port 22 and the lower cleaning port 27 of the reaction tank, respectively. Cleaning is performed, and the cleaned liquid is discharged from the slag discharge port at the bottom of the reaction tank 15 .

In the present invention, several material conveying pipelines are connected with the reaction tank, and through the detection data of the flow transmitter and the pressure sensor, the upper computer can monitor the material flow in real time, realize the precise control of chemical raw materials, and stir the raw materials through the agitator. , so that the raw materials are evenly mixed, fully reacted, and high-quality nanomaterials are generated; the present invention can control the addition amount and mixing speed of different chemical raw materials through the host computer according to the type of the prepared nanomaterials, and is suitable for a variety of nanomaterials. preparation.

Claims (4)

1. A production line for preparing nano materials is characterized in that: the device comprises a reaction device (3) and a plurality of groups of conveying devices (4) which are arranged on a rack (1) and are connected with each other, wherein the reaction device (3) comprises a reaction tank (15), a plurality of reaction tank feed inlets (12) are formed in a top cover of the reaction tank (15), and a reaction tank discharge outlet (32) is arranged at the lower part of the side wall of the reaction tank (15); a stirring shaft of the stirrer (20) penetrates through a top cover of the reaction tank (15), a stirring impeller arranged at the bottom of the stirring shaft is suspended in an inner cavity of the reaction tank (15), the top end of the stirring shaft is connected with a motor (21), the motor (21) is fixed on a motor support (19), and the motor support (19) is arranged on the side wall of the reaction tank (15);

each group of conveying devices (4) comprises a storage tank (6), a discharge port of the storage tank (6) is connected with a corresponding reaction tank feed port (12) through an independent material conveying pipeline (14), a first electric control switch valve (5) is installed at the discharge port of the storage tank (6), a metering pump (18) and a pressure sensor (17) are sequentially installed on each material conveying pipeline (14) according to the flowing direction of materials, the device comprises a flow meter (16) and a flow transmitter (10), wherein a three-way valve and a third electric control switch (12) are further installed on a connecting pipeline of the flow meter (16) and a reaction tank (15), a third port of the three-way valve is communicated with one end of a material backflow pipeline (13), the other end of the material backflow pipeline (13) is communicated with a feeding hole of a material storage tank (6), and a second electric control switch valve (8) is installed on the material backflow pipeline (13);

the control switches of the first electric control switch valve (5), the second electric control switch valve (8), the flowmeter (16), the metering pump (18) and the motor (21) are all installed in an electric control cabinet (29), the electric control cabinet (29) is connected with an upper computer (28), and the pressure sensor (17) and the flow transmitter (10) are connected with the upper computer (28).

2. The production line for producing nanomaterials of claim 1, wherein: the reaction tank (15) is connected with the cleaning device (2), the cleaning device (2) comprises a self-sucking pump (24) and a washing liquid tank (25), the self-sucking pump (24) is communicated with an upper cleaning opening (22) formed in the top end of the reaction tank (15) through an upper washing liquid pipeline (30), and the self-sucking pump (24) is also communicated with a lower cleaning opening (37) formed in the bottom of the reaction tank (15) through a lower washing liquid pipeline (31); a fourth electric control switch valve (23) is arranged on the upper washing liquid pipeline (30), and a fifth electric control switch valve (26) is arranged on the lower washing liquid pipeline (31); the fourth electric control switch valve (23), the fifth electric control switch valve (26) and the control switch of the self-priming pump (24) are all arranged in an electric control cabinet (29).

3. The production line for producing nanomaterials of claim 1, wherein: and a check valve (9) is arranged on the material conveying pipeline (14) between the metering pump (18) and the flowmeter (16).

4. The production line for producing nanomaterials of claim 1, wherein: and a filter (7) is arranged at the discharge outlet of the storage tank (6).

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