CN113477204A

CN113477204A - Mixing device

Info

Publication number: CN113477204A
Application number: CN202110793864.3A
Authority: CN
Inventors: 张志炳; 孟为民; 周政; 王宝荣; 杨高东; 罗华勋; 张锋; 李磊; 杨国强; 田洪舟; 曹宇
Original assignee: Nanjing Institute of Microinterface Technology Co Ltd
Current assignee: Nanjing Institute of Microinterface Technology Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-10-08

Abstract

The invention provides a mixing device which comprises a reaction kettle and an automatic control system, wherein a detection port is arranged in the middle of the reaction kettle, a feed port is arranged at the top end of the reaction kettle, the detection port and the feed port are connected with the automatic control system, and a visible window liquid level meter is arranged in the front of the reaction kettle and close to the top of the reaction kettle. The mixing device is provided with the feed inlet and the detection port on the reaction kettle and is connected with the automatic control system, so that the temperature value, the pH value and the dissolved oxygen content in the reaction kettle can be automatically detected, the pH value and the dissolved oxygen content in the reaction kettle are controlled by controlling the feeding amount through the automatic control system, and the internal condition of the reaction kettle can be observed by arranging the visible window liquid level meter in front of the reaction kettle, so that the operation of workers is facilitated.

Description

Mixing device

Technical Field

The invention relates to the field of chemical production, in particular to a mixing device.

Background

At present, chemical production is an indispensable part in production and life, the chemical process refers to the production process of chemical industry, one of the characteristics of the chemical process is that the operation steps are multiple, raw materials sequentially pass through a plurality of or a plurality of groups of devices in each step, and the raw materials can be processed into products in various modes. The mixing device is a tool which is frequently used in the chemical production process, and the existing mixing device is generally manually fed, so that the workload is large and the mixing device is relatively dangerous.

The existing mixing device mostly needs manual operation, manual detection, manual feeding and manual defoaming, and cannot sample in chemical production, so that the internal condition of the mixing device is not easy to know.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to provide a mixing device, which can automatically detect the temperature value, the pH value and the dissolved oxygen content in a reaction kettle by arranging a feed inlet and a detection port on the reaction kettle and connecting the feed inlet and the detection port with an automatic control system, and control the pH value and the dissolved oxygen content in the reaction kettle by controlling the feeding amount by the automatic control system.

In order to achieve the above purpose of the present invention, the following technical solutions are adopted:

the invention provides a mixing device which comprises a reaction kettle and an automatic control system, wherein a detection port is formed in the bottom of the reaction kettle, a feeding port is formed in the top of the reaction kettle, and the detection port and the feeding port are connected with the automatic control system.

Among the prior art, mixing arrangement needs manual operation, manual detection, manual feeding, manual defoaming mostly, and can't take a sample in chemical production, is difficult to learn mixing arrangement's the internal conditions.

In order to solve the technical problems, the invention provides a mixing device, wherein a feed inlet and a detection port are arranged on a reaction kettle and are connected with an automatic control system, so that the temperature value, the pH value and the dissolved oxygen content in the reaction kettle can be automatically detected, and the pH value and the dissolved oxygen content in the reaction kettle are controlled by controlling the feeding amount through the automatic control system. The detection port detects three key values, one is pH value, the pH value is detected through an electrode and a shielding wire, and then acid or alkali is supplemented into the reaction kettle from the feed port after the pH value is analyzed through an automatic control system. The electrode for measuring the pH value can not be subjected to high-pressure high-temperature sterilization, the measurement range is 0-14, and the precision can be controlled within +/-0.01. The dissolved oxygen content is measured by the two detection ports, the dissolved oxygen content is measured by the electrodes and the shielding wires, and then the dissolved oxygen content is analyzed by the automatic control system and fed into the reaction kettle through the feeding port, wherein the measurement range of the dissolved oxygen content is 0-200%, and the precision is +/-1%. The temperature in the reaction kettle is measured through the three detection ports, the temperature in the reaction kettle is measured through the electrodes, and then the control system cools through tap water and cold water. The invention also arranges a visible window liquid level meter in front of the reaction kettle to observe the internal condition of the reaction kettle, which is convenient for the operation of the staff.

Preferably, the reaction kettle is provided with a defoaming electrode port connected with the automatic control system, and the defoaming electrode port and the feed inlet are arranged at the top end of the reaction kettle side by side. The defoaming electrode port is connected with an automatic control system, and defoaming agents are added in proportion after foams are detected. The control precision of the defoaming electrode is as follows: 10-100000 omega.

Preferably, the reaction kettle is provided with a cleaning valve connected with the automatic control system, the cleaning valve is located at the top end of the reaction kettle side by side with the feed inlet, the cleaning valve is connected with a flushing device in the reaction kettle, and the flushing device is arranged at the top in the reaction kettle. The flushing device is a spray ball without dead angles, when the cleaning valve is opened, water flows to the spray ball through the cleaning valve, and the spray ball is arranged inside the cleaning reaction kettle without dead angles.

Preferably, one side of the inner wall of the reaction kettle is provided with a jacket, the jacket comprises an upper jacket opening and a lower jacket opening, and water flows out from the lower jacket opening after entering from the upper jacket opening to control the temperature. Tap water or cold water can be introduced into the jacket to cool the reaction kettle.

Preferably, the reaction kettle is provided with a sampling port for aseptic sampling, and the sampling port is arranged at the bottom of the reaction kettle. The sampling port is arranged at the bottom of the reaction kettle, and an integrated two-way combination valve and an independent pure steam sterilization system are adopted. The side wall of reation kettle is hugged closely to the sample connection, can realize aseptic sample in reation kettle work, and the long-pending material of not gathering up, the sample is convenient.

Preferably, the bottom of the reaction kettle is connected with a stirring device, and the stirring device comprises a double-end mechanical seal for preventing material leakage.

Preferably, the stirring device further comprises a fan blade, and the fan blade is arranged at the top end of the stirring device and is axially upwards used for circulating the bottom material to the upper part of the reaction kettle.

Preferably, the bottom of the stirring device is provided with an air inlet, and the air inlet is positioned above the stirring device.

The stirring device comprises a motor, a double-end mechanical seal, a stirring shaft, fan blades and the like, wherein the rotating speed of the motor is 0-400rpm, the power is 1.5kw, the fan blades are axial-flow type efficient fan blades, the surface is polished, and the polishing degree is controlled to be Ra less than or equal to 0.4 mu m.

Preferably, one side of the inner wall of the reaction kettle is provided with a baffle which is parallel to the inner wall of the reaction kettle. A plurality of baffles are arranged on the inner wall of the reaction kettle, so that vortexes generated by the centrifugal force generated by the rotation of the motor in the reaction kettle are prevented.

Preferably, a micro-interface generator is arranged in the reaction kettle and connected with the gas inlet to break and disperse gas before reaction, so that the temperature and pressure in the reaction kettle are reduced. The micro-interface generator is arranged in the reaction kettle and arranged above the fan blades, bubbles are broken and dispersed by the micro-interface and then pushed to the upper part of the reaction kettle by the fan blades, mixing time of the bubbles and solution and phase boundary mass transfer area are increased, and therefore temperature and pressure in the reaction kettle are reduced.

The automatic control system comprises a pH detection control module, a dissolved oxygen content detection control module, a temperature detection control module, an automatic defoaming module, an automatic material supplementing module and an automatic sterilization module.

Compared with the prior art, the mixing device has the advantages that the feeding port and the detection port are arranged on the reaction kettle and are connected with the automatic control system, so that the temperature value, the pH value and the dissolved oxygen content in the reaction kettle can be automatically detected, the pH value and the dissolved oxygen content in the reaction kettle are controlled by controlling the feeding amount through the automatic control system, and the internal condition of the reaction kettle can be observed by arranging the visible window liquid level meter in front of the reaction kettle, so that the operation of workers is facilitated.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a mixing device provided in this embodiment.

Wherein:

10-a motor; 11-a drive shaft;

12-lower bottle cap; 13-a lower flange;

14-a cone; 15-lower inner baffle;

16-a middle flange; 17-upper inner baffle;

18-ear mount; 19-connecting a bottom plate;

20-a jacket; 21-an upper flange;

22-putting a bottle cap; 23-a flushing device;

24-a light mirror; 25-visual window level gauge;

300-a feed inlet; 301-alkali supplement port;

302-acid supplement port 303-material supplement port;

310-cleaning the valve; 321-an exhaust port;

322-defoaming electrode port; 201-jacket upper port;

202-jacket lower port; 340-a detection port;

341-temperature detection port; 342-pH detection port;

343-dissolved oxygen content detection port; 350-air inlet;

360-outlet valve port; 370-a sampling port;

40-a micro-interface generator; 50-a stirring device;

501-a stirring shaft; 502-fan blades;

503-double-ended mechanical seal; 60-an automatic control system;

70-reaction kettle.

Detailed Description

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to more clearly illustrate the technical solution of the present invention, the following description is made in the form of specific embodiments.

Examples

Referring to fig. 1, the mixing apparatus provided by the present invention includes a reaction kettle 70, a stirring apparatus 50, and an automatic control system 60, wherein the reaction kettle 70, the stirring apparatus 50, and the automatic control system 60 cooperate with each other to form the mixing apparatus of the present invention.

Firstly, explaining the reaction kettle 70, the ear type supports 18 and the bottom connecting plates 19 are arranged on the outer sides of the two sides of the reaction kettle 70, and can be placed on the ground when the reaction kettle 70 is replaced, so that the reaction kettle is not easy to slide, and the body of the reaction kettle 70 is prevented from being collided. The top end of the reaction kettle 70 is provided with an upper bottle cap 22 and an upper flange 21, the upper bottle cap 22 is arranged above the upper flange 21, and the upper bottle cap 22 and the upper flange are combined. Go up the protruding export of bottle lid 22, be feed inlet 300, wash valve 310 and gas vent 321 respectively, wherein feed inlet 300 also is mend alkali mouth 301, mend acid mouth 302 and feed supplement mouth 303, wherein gas vent 321 is defoaming electrode mouth 322 also, wherein wash valve 310 is connected with washing unit 23, washing unit 23 sets up the top in reation kettle 70, washing unit 23 is the ball that sprays at no dead angle, when wash valve 310 is opened, rivers spray the ball through wash valve 310 flow direction, it is inside to spray the clearance reation kettle 70 at ball no dead angle. . The side wall of the reaction kettle 70 is also provided with a jacket 20, and the side wall is also provided with a jacket upper opening 201 and a jacket lower opening 202, so that cold water or tap water can flow in from the jacket upper opening 201 and flow out from the jacket lower opening 202 when the temperature needs to be reduced, and the temperature in the reaction kettle 70 can be reduced. A middle flange 16 is also arranged below the reaction kettle 70, and the middle flange 16 is connected with the upper end of a double-end mechanical seal 503 of the stirring device 50. The bottom outside the reaction kettle 70 is also provided with a detection port 340, the detection ports 340 are a temperature detection port 341, a pH detection port 342 and a dissolved oxygen content detection port 343, respectively, the temperature detection port 341 detects the temperature inside the reaction kettle 70 through a temperature probe, and the detection precision of the temperature probe is 0.1 ℃; the pH detection port 342 detects through a pH electrode, the range is 0-14, the precision is +/-0.01, and a signal from the pH electrode is amplified through a transmitter and then is transmitted to the automatic control system 60; the dissolved oxygen content detecting port 343 measures through the DO electrode, the dissolved oxygen content measuring range can be 0-200%, the precision is ± 1%, and when the signal from the DO electrode is amplified by the transducer and then transmitted to the automatic control system 60.

The inside of reation kettle 70 is provided with lamp mirror 24 and visual window level gauge 25, makes things convenient for the staff to observe the inside behavior of reation kettle 70. One side of reation kettle 70 inside wall is provided with cone 14, goes up interior baffle 17 and interior baffle 15 down, and these three parts combine to prevent the rotatory swirl that produces of agitating unit 50 together, and the inside swirl that produces of reation kettle 70 can cause the material to leak, the condition of seeing the inside liquid level of reation kettle 70 appears, sets up cone 14, goes up interior baffle 17 and interior baffle 15 down and can effectively solve the swirl problem.

The automatic control system 60 is connected with the detection port 340, the feed port 300, the cleaning valve 310 and the exhaust port 321 on the reaction kettle 70, namely, the automatic control system 60 is connected with the alkali supplement port 301, the acid supplement port 302, the material supplement port 303, the temperature detection port 341, the pH detection port 342, the dissolved oxygen content detection port 343 and the defoaming electrode port 322. A pH detection control module, a dissolved oxygen content detection control module, a temperature detection control module, an automatic defoaming module and an automatic material supplementing module are arranged in the automatic control system 60. The pH detection port 342 is connected with a pH detection control module, so that pH value curve analysis, acid or alkali addition curve analysis can be realized, after analysis, the automatic material supplementing module is connected with an alkali supplementing port 301, an acid supplementing port 302 and a material supplementing port 303 to adjust the pH value of the reaction kettle 70, the adjusting stage can be at least more than 10 sections, and the adjustment can be carried out for more than 10 times in the whole reaction process; the dissolved oxygen content detecting port 343 is connected to the automatic control system 60, and measures the dissolved oxygen content, and can feed material after analysis, and the adjusting stage can be at least more than 10 stages. The automatic control system 60 is connected with the defoaming electrode port 322, the foam quantity can be measured by the defoaming electrode, the precision is 10-100000 omega, and when the foam in the reaction kettle 70 is too much, the automatic control system 60 can automatically add the defoaming agent to reduce the foam. The automatic control system 60 is connected to the cleaning valve 310, and when the interior of the reaction kettle 70 needs to be cleaned, the automatic control system 60 automatically opens the cleaning valve 310, so that water flows from the cleaning valve 310 to the flushing device 23 to clean the interior of the reaction kettle 70.

The mixing device further comprises a stirring device 50, wherein the upper end of a double-end mechanical seal 503 of the stirring device 50 is connected with a middle flange 16 of the reaction kettle 70, and the lower end of the double-end mechanical seal is connected with a lower bottle cap 12 of a lower flange 13. The lower bottle cap 12 is provided with an opening, the transmission shaft 11 is connected with the stirring shaft 501 through the opening of the lower bottle cap 12 and the lower flange 13, the top end of the stirring shaft 501 is provided with fan blades 502, the fan blades 502 are axial flow type efficient fan blades 502, the surface is polished, and the polishing degree is controlled to be Ra less than or equal to 0.4 μm. The transmission shaft 11 is connected with the motor 10, the motor 10 provides power for the rotation of the transmission shaft 11, the rotating speed of the motor 10 is 0-400rpm, and the power is 1.5 kw. The side wall of the stirring system is further provided with an air inlet 350, the air inlet 350 penetrates through the side wall of the stirring device 50 to be connected with the micro-interface generator 40, the micro-interface generator 40 is arranged above the fan blades 502, bubbles are broken and dispersed by the micro-interface and then pushed to the upper part of the reaction kettle 70 by the fan blades 502, the mixing time of the bubbles and the solution and the mass transfer area of the phase boundary are increased, and therefore the temperature and the pressure inside the reaction kettle 70 are reduced. The bottom of the stirring device 50, namely the lower bottle cap 12, is provided with a discharge valve port 360 and a sampling port 370, and the sampling port 370 adopts an integrated two-way combination valve and a separate pure steam sterilization system. Sampling port 370 is hugged closely reation kettle 70's lateral wall, can realize aseptic sample in reation kettle 70 work, and the long-pending material that does not take a sample, the sample is convenient, and discharge valve port 360 is connected with the result collecting tank, directly collects.

Finally, it is to be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not intended to be limiting. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as within the scope of the invention.

Claims

1. The mixing device is characterized by comprising a reaction kettle and an automatic control system, wherein a detection port is formed in the bottom of the reaction kettle, a feed port is formed in the top of the reaction kettle, and the detection port is connected with the feed port and the automatic control system.

2. The mixing device of claim 1, wherein the reaction kettle is provided with a defoaming electrode port connected with the automatic control system, and the defoaming electrode port and the feeding port are arranged at the top end of the reaction kettle side by side.

3. The mixing device according to claim 1, wherein the reaction kettle is provided with a cleaning valve connected with the automatic control system, the cleaning valve and the feeding port are arranged at the top end of the reaction kettle side by side, the cleaning valve is connected with a flushing device in the reaction kettle, and the flushing device is arranged at the top in the reaction kettle.

4. The mixing device according to claim 1, wherein a jacket is arranged on one side of the inner wall of the reaction kettle, the jacket comprises an upper jacket port and a lower jacket port, and water enters from the upper jacket port and then flows out from the lower jacket port to control the temperature.

5. The mixing device of claim 1, wherein the reaction vessel is provided with a sampling port for sterile sampling, the sampling port being provided at a bottom of the reaction vessel.

6. The mixing device of claim 1, wherein a stirring device is connected to the bottom of the reaction vessel, the stirring device comprising a double-ended mechanical seal to prevent leakage of the material.

7. The mixing device of claim 6, wherein the stirring device further comprises a fan blade disposed at the top end of the stirring device and axially upward for circulating the bottom material to the upper portion of the reaction vessel.

8. A mixing device according to claim 7, wherein the bottom of the stirring device is provided with an air inlet, said air inlet being located above the fan blades.

9. The mixing device of claim 1, wherein a baffle is disposed on one side of the inner wall of the reaction vessel, said baffle being parallel to the inner wall of the reaction vessel.

10. The mixing device according to any one of claims 1 to 9, wherein a micro interface generator is arranged inside the reaction kettle, and the micro interface generator is connected with the gas inlet to break and disperse gas before reaction and reduce the temperature and pressure inside the reaction kettle.