Feeding and discharging control system of DTB crystallization kettle

Abstract

The utility model relates to a DTB crystallization kettle feeding and discharging control system which comprises a liquid level meter, a particle size analyzer, a feeding pump, a pneumatic valve and a PLC. The liquid level meter is mounted on the DTB crystallization kettle and is used for monitoring the liquid level in the DTB crystallization kettle; the particle size analyzer is mounted on the DTB crystallization kettle and is used for analyzing the particle size of crystals in the DTB crystallization kettle; the feeding pump is mounted on a feeding pipeline of the DTB crystallization kettle; the pneumatic valve is mounted at a discharge hole of the DTB crystallization kettle; and the liquid level meter, the particle size analyzer, the feeding pump and the pneumatic valve are all electrically connected with the PLC. Through monitoring cooperation of the PLC, the pneumatic valve and the liquid level meter, intermittent discharging is achieved, and the problem that a discharging opening is blocked is solved; through cooperation of the PLC, the particle size analyzer and the feeding pump, continuous feeding is achieved, and therefore automatic control over feeding and discharging of the crystallization kettle is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to crystallization process equipment technical field, concretely relates to a DTB crystallization kettle feeding and discharging control system. BACKGROUND

[0002] Generally, the continuous crystallization process is blocked by the small size of the discharge port of the DTB crystallization kettle, and continuous feeding cannot be realized after the discharge port is blocked, which hinders normal production of enterprises and is low in efficiency. UTILITY MODEL CONTENTS

[0003] The utility model discloses a DTB crystallization kettle feeding and discharging control system, which solves the technical problems of blockage of the discharge port of the DTB crystallization kettle.

[0004] In order to solve the above problems, the technical scheme of the utility model is as follows: a DTB crystallization kettle feeding and discharging control system, comprising:

[0005] A liquid level meter is installed on the DTB crystallization kettle and is used to monitor the liquid level in the DTB crystallization kettle.

[0006] A particle size analyzer is installed on the DTB crystallization kettle and is used to analyze the particle size of the crystals in the DTB crystallization kettle.

[0007] A feeding pump is installed on the feeding pipeline of the DTB crystallization kettle.

[0008] A pneumatic valve is installed at the discharge port of the DTB crystallization kettle.

[0009] A PLC controller is electrically connected to the liquid level meter, the particle size analyzer, the feeding pump and the pneumatic valve. The PLC controller is used to receive and analyze the data of the liquid level meter, control the discharge rate of the pneumatic valve according to the data analysis result, and receive and analyze the data of the particle size analyzer, control the feeding rate of the feeding pump according to the data analysis result.

[0010] Optionally, a stirring motor is installed on the DTB crystallization kettle, the stirring motor is used to drive the stirring device in the DTB crystallization kettle to rotate, and the stirring motor is electrically connected to the PLC controller.

[0011] Optionally, a display screen is electrically connected to the PLC controller, and the display screen is used to display the feeding rate of the feeding pump, the stirring motor rate, the liquid level in the DTB crystallization kettle, the particle size analysis data and the discharge rate of the pneumatic valve.

[0012] Optionally, the upper layer material in the DTB crystallization kettle is small particles, the lower layer material is large particles, and the detection probe of the particle size analyzer is located in the lower layer and is used to analyze the size of the lower layer particles.

[0013] Optionally, the particle size analyzer used is a crystallization monitor, model PCM, from Pixact, Finland.

[0014] Optionally, the particle size analyzer used is a probe-type online particle shape and size analyzer from Matrix Instruments, model 2DVisionProbe.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention achieves intermittent discharge from the DTB crystallizer by using a PLC controller, a level gauge, and pneumatic valves, thus solving the problem of frequent blockage at the discharge port. Furthermore, by using a PLC controller, a particle size analyzer, and a feed pump, continuous feeding is achieved, improving production efficiency. Integrating the level gauge, particle size analyzer, feed pump, stirring motor, and pneumatic valves into a single PLC controller makes control more convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the connection of the DIB crystallizer feed and discharge control system in the embodiment.

[0018] Attached reference numerals: 1. PLC controller; 2. DTB crystallizer; 3. Level gauge; 4. Particle size analyzer; 5. Feed pump; 6. Pneumatic valve; 7. Stirring motor; 71. Stirrer; 8. Display screen. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0020] Example: Figure 1 As shown, this embodiment provides a DTB crystallizer feed and discharge control system, including a level gauge 3, a particle size analyzer 4, a feed pump 5, a pneumatic valve 6, and a PLC controller 1. The level gauge 3 is installed on the DTB crystallizer 2 and is used to monitor the liquid level inside the DTB crystallizer 2. The particle size analyzer 4 is installed on the DTB crystallizer 2 and is used to analyze the crystal particle size inside the DTB crystallizer 2. The feed pump 5 is installed on the feed pipe of the DTB crystallizer 2. The pneumatic valve 6 is installed at the discharge port of the DTB crystallizer 2. The level gauge 3, particle size analyzer 4, feed pump 5, and pneumatic valve 6 are all electrically connected to the PLC controller 1. The PLC controller 1 is used to receive and analyze the data from the level gauge 3, and control the discharge rate of the pneumatic valve 6 according to the data analysis results. The PLC controller 1 is also used to receive and analyze the data from the particle size analyzer 4, and control the feed rate of the feed pump 5 according to the data analysis results.

[0021] Through the above setting, the liquid level meter 3, the particle size analyzer 4, the feed pump 5 and the pneumatic valve 6 are controlled by the same PLC controller 1, the PLC controller 1 controls the discharge rate of the pneumatic valve 6 through the feedback of the liquid level meter 3, and the pneumatic valve 6 is opened when the set liquid level is reached; the PLC controller 1 controls the feed rate through the feedback of the particle size analyzer 4, and then controls the residence time, when the particle size is small, the feed rate is slowed down, the residence time is increased, the particles are fully grown, and vice versa, the feed rate is accelerated, and the lower large particles are discharged. The embodiment realizes intermittent discharge through the cooperation of the PLC controller 1, the pneumatic valve 6 and the liquid level meter 3, solves the problem of discharge port blockage, realizes continuous feeding through the cooperation of the PLC controller 1, the particle size analyzer 4 and the feed pump 5, and realizes the automatic control of the crystallization kettle feeding and discharging.

[0022] The DTB crystallization kettle feeding and discharging control system of the embodiment further comprises a stirring motor 7, the stirring motor 7 is installed on the DTB crystallization kettle 2, the stirring motor 7 is used to drive the stirrer 71 in the DTB crystallization kettle 2 to rotate, and the stirring motor 7 is electrically connected with the PLC controller 1. In this way, the same PLC controller 1 is used to realize the automatic control of the stirring motor 7, the structure is simple, and the operation is convenient.

[0023] The DTB crystallization kettle feeding and discharging control system of the embodiment further comprises a display screen 8, the display screen 8 is electrically connected with the PLC controller 1, and the display screen 8 is used to display the feed rate of the feed pump 5, the stirring motor 7 speed, the liquid level in the DTB crystallization kettle 2, the particle size analysis data and the discharge rate of the pneumatic valve 6. In this way, the running condition in the crystallization kettle can be quickly known.

[0024] In the DTB crystallization kettle feeding and discharging control system of the embodiment, the upper layer material in the DTB crystallization kettle 2 is small particles, the lower layer material is large particles, and the detection probe of the particle size analyzer 4 is located in the lower layer and is used to analyze the size of the lower layer particles, so that the analysis accuracy is high.

[0025] In the DTB crystallization kettle feeding and discharging control system of the embodiment, the particle size analyzer 4 adopts the crystallization monitor of the Finland Pixact Company, and the model is PCM. The particle size analyzer 4 can also adopt the probe type online particle size analyzer of the Lattice Code Company, and the model is 2D Vision Probe.

Claims

1. A DTB crystallizer feed and discharge control system, characterized by, The application relates to a DTB crystallization kettle control system, which comprises the following components: a liquid level meter (3) installed on a DTB crystallization kettle (2) and used for monitoring the liquid level in the DTB crystallization kettle (2); a particle size analyzer (4) installed on the DTB crystallization kettle (2) and used for analyzing the crystal particle size in the DTB crystallization kettle (2); a feeding pump (5) installed on a feeding pipeline of the DTB crystallization kettle (2); a pneumatic valve (6) installed at a discharging port of the DTB crystallization kettle (2); a PLC controller (1) electrically connected with the liquid level meter (3), the particle size analyzer (4), the feeding pump (5) and the pneumatic valve (6); the PLC controller (1) is used for receiving and analyzing the data of the liquid level meter (3), controlling the discharging rate of the pneumatic valve (6) according to the data analysis result, receiving and analyzing the data of the particle size analyzer (4) and controlling the feeding rate of the feeding pump (5) according to the data analysis result.

2. The DTB crystallizer feed and discharge control system of claim 1, wherein, The application further comprises a stirring motor (7) installed on the DTB crystallization kettle (2), the stirring motor (7) is used for driving a stirrer (71) in the DTB crystallization kettle (2) to rotate, and the stirring motor (7) is electrically connected with the PLC controller (1).

3. The DTB crystallizer feed and discharge control system of claim 2, wherein, The application further comprises a display screen (8) electrically connected with the PLC controller (1), the display screen (8) is used for displaying the feeding rate of the feeding pump (5), the stirring motor (7) rate, the liquid level in the DTB crystallization kettle (2), the particle size analysis data and the discharging rate of the pneumatic valve (6).

4. The DTB crystallizer feed and discharge control system of claim 1, wherein, The upper layer material in the DTB crystallization kettle (2) is small particles, the lower layer material is large particles, the detection probe of the particle size analyzer (4) is located in the lower layer and is used for analyzing the particle size of the lower layer.

5. The DTB crystallizer feed and discharge control system of claim 1, wherein, The particle size analyzer (4) is a crystallization monitor of a Pixact company in Finland and the model is PCM.

6. The DTB crystallizer feed and discharge control system of claim 1, wherein, The particle size analyzer (4) is a probe type online particle size analyzer of a Lattice Code company and the model is 2D Vision Probe.

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