Miniature pneumatic magnetic mixer for continuous reaction

Abstract

The utility model discloses a miniature pneumatic magnetic mixer for continuous reaction, which comprises a driving part and a mixing part positioned above the driving part, the driving part comprises a shell and a support positioned above the shell, and a pneumatic driving cavity and a variable speed cavity are respectively arranged in the shell from bottom to top. The pneumatic driving cavity is provided with a driving gas inlet and a driving gas outlet, a pneumatic driving wheel is arranged in the pneumatic driving cavity, a right rotating speed wheel, a left rotating speed wheel and a differential mechanism are arranged in the variable speed cavity, the left rotating speed wheel is fixedly connected with the pneumatic driving wheel, and the top end of the right rotating speed wheel is connected with a permanent magnet; the mixing part comprises a reactor, a sight glass and a vacuum cavity located between the reactor and the sight glass, the reactor is located on the support, and a stirring magneton is placed in the reactor. According to the miniature pneumatic magnetic mixer for the continuous reaction, a miniature reactor and pneumatic magnetic stirring are integrated, so that materials can be uniformly mixed, and continuous production of small-batch products can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to material mixing equipment technical field, concretely relates to a micro pneumatic magnetic mixer for continuous reaction. BACKGROUND

[0002] Chemical reaction is divided into continuous reaction and batch reaction, so-called continuous reaction is that material flows continuously in the reactor, reaction process is carried out continuously, and the parameter in the reactor does not change with time, which is suitable for large-scale production, while batch reaction is that material is batched into the reactor, and after reaction is completed, it is batched out, and in the reaction process, neither material is added, nor material is outputted, which is suitable for small-scale or multi-variety production.

[0003] Because continuous reaction has the advantages of high production efficiency, stable product quality and easy automatic control, in recent years, for small-scale production, continuous reaction mode is also researched. Because chemical reaction usually involves two or more materials participating in reaction, uneven mixing of materials will cause the equivalence of reactants, and increase the impurity content, in order to solve the problem, two types of small mixers are commonly used in industry.

[0004] The first type is a pipeline static mixer, as shown in the figure, relying on the power of two or more materials, through the cross spiral structure, the plug flow is changed into turbulent flow, and the mixing purpose is achieved. The pipeline static mixer has simple structure, but has the following shortcomings: 1) multiple cross spiral structure is needed for turbulent mixing, and if solid is generated, it is easy to cause blockage; 2) the internal structure is complex, which is not conducive to cleaning; 3) the mixing effect is poor at low flow rate, and there is the problem of instantaneous uneven mixing; 4) temperature control cannot be realized. Figure 1 The second type is a small kettle dynamic mixer, as shown in the figure, a heat exchange liquid jacket 7 is installed on the outside of the kettle body, a heat exchange liquid inlet 5 and a heat exchange liquid outlet 6 are arranged on the jacket, and temperature control is realized through the heat exchange liquid. A stirring motor 3 is arranged at the top end of the kettle body, the stirring motor 3 is connected with a stirring paddle 4, and the stirring paddle 4 is used for stirring and mixing the mixed liquid in the kettle body. The small kettle dynamic mixer can solve the problem of poor mixing effect, but the small kettle dynamic mixer has relatively large volume, it is difficult to achieve small amount of mixing, resulting in waste of raw materials, and the stirring motor is large, which is not easy to place. In addition, the kettle body is not visible, and the internal stirring condition is not clear.

[0005] Figure 2 Therefore, it is urgent to obtain a micro mixer which can realize uniform mixing effect with small volume. UTILITY MODEL CONTENTS

[0006] The utility model relates to material mixing equipment technical field, concretely relates to a micro pneumatic magnetic mixer for continuous reaction.

[0007] ​In view of the above-mentioned defects of the prior art, the utility model provides a micro pneumatic magnetic force mixer for continuous reaction, which is used in cooperation with a micro reactor and a magnetic force drive, overcomes the poor mixing effect of traditional mixers and the problem that traditional mixers cannot be used for small amount mixing, and realizes the continuous reaction of small batch products.

[0008] In order to solve the above technical problems, the utility model provides a micro pneumatic magnetic force mixer for continuous reaction, which comprises a driving part and a mixing part located above the driving part,

[0009] The driving part comprises a shell and a support located above the shell, the shell is provided with a pneumatic driving cavity and a speed change cavity from bottom to top, the pneumatic driving cavity is provided with a driving gas inlet and a driving gas outlet, a pneumatic driving wheel is arranged in the pneumatic driving cavity and rotates under the action of driving gas, the speed change cavity is provided with a right speed wheel, a left speed wheel and a differential gear located between the right speed wheel and the left speed wheel, the left speed wheel is fixedly connected with the pneumatic driving wheel and rotates under the action of the pneumatic driving wheel, and the top end of the right speed wheel is connected with a permanent magnet.

[0010] The mixing part comprises a reactor, a sight glass and a vacuum cavity located between the reactor and the sight glass, the reactor is located on the support, and a stirring magnet is placed in the reactor.

[0011] By introducing driving gas into the pneumatic driving cavity, the driving gas drives the pneumatic driving wheel to rotate, the left speed wheel rotates accordingly, the differential gear is arranged between the left speed wheel and the right speed wheel, the rotation speed of the right speed wheel and the permanent magnet connected with the right speed wheel is controlled through the differential gear, and the rotation speed of the stirring magnet in the reactor is controlled. Through pneumatic driving, the rotation of the permanent magnet and the stirring magnet is realized, so that the materials in the reactor are uniformly mixed. Since the stirring paddle is avoided, the reactor can be set to mL level, which not only satisfies the uniform mixing of materials, but also realizes small batch production. In addition, the pneumatic driving magnetic stirring overcomes the problem of non-explosion-proof of traditional electromagnetic force driving.

[0012] As a preferred embodiment, the differential gear comprises a shaft body and a differential gear sleeved on the shaft body, the differential gear is engaged with the right speed wheel and the left speed wheel, a rectangular hole is formed in the lower end of the shaft body, a gear is arranged in the rectangular hole, a sawtooth engaged with the gear is arranged on the side surface of the rectangular hole, and the gear is fixedly connected with the differential gear control knob arranged on the outer end of the shell.

[0013] Rotating the differential gear control knob drives the gear to rotate, the sawtooth is engaged with the gear, the shaft body moves upward or downward as a whole under the action of the gear, the differential gear moves upward or downward accordingly, and the rotation speed of the right speed wheel is adjusted, so as to control the rotation speed of the permanent magnet and the stirring magnet.

[0014] As a preferred embodiment, a knob is arranged above the sight glass, and the knob is connected with the scraping plate at two ends through a connecting shaft.

[0015] The reaction in the reactor can be carried out at normal temperature or low temperature, when it is a low-temperature reaction, frost problem can exist on the sight glass, the knob is arranged to rotate the scraping plate to quickly remove the frost on the surface of the sight glass, and the operation is convenient.

[0016] As a preferred embodiment, the reactor is provided with a material inlet and a material outlet, and the material inlet is arranged in the tangential direction of the reactor.

[0017] The reaction raw material enters from the material inlet, and the reaction product is discharged from the material outlet, so that continuous reaction of the reactor can be realized.

[0018] As a preferred embodiment, a heat exchange cavity is arranged outside the reactor, and a heat exchange liquid inlet and a heat exchange liquid outlet are arranged on the heat exchange cavity.

[0019] The heat exchange cavity can realize the reaction under different reaction conditions of the reactor.

[0020] As a preferred embodiment, a temperature measuring component is arranged on the reactor to detect the temperature in the reactor.

[0021] As a preferred embodiment, the cover body of the reactor is a high-pressure-resistant glass sheet, and the high-pressure-resistant glass sheet is provided with a sealing ring at two ends.

[0022] As a preferred embodiment, the vacuum cavity is connected with the reactor through a flange.

[0023] As a preferred embodiment, the vacuum cavity is connected with the sight glass through a clamp.

[0024] By arranging the vacuum cavity, the clear low-temperature heat-conducting oil is filled in the vacuum cavity, so that frost caused by low temperature in the vacuum cavity is avoided, and the observation of the stirring effect in the reactor by the sight glass is affected.

[0025] As a preferred embodiment, the internal volume of the reactor is 200ml.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] (1) The utility model discloses a micro pneumatic magnetic mixer for continuous reaction, which is cleverly designed to integrate a micro reactor and a pneumatic magnetic stirring, so that the mixture of materials is uniform, and the continuous production of small batches of products can be realized.

[0028] (2) The utility model is used for the micro pneumatic magnetic force mixer of continuous reaction, through the pneumatic drive instead of electromagnetic force drive, overcomes the problem of traditional continuous reaction electromagnetic force drive not explosion -proof.

[0029] (3) The utility model is used for the micro pneumatic magnetic force mixer of continuous reaction, and the reactor does not need complicated design, overcomes the problem of traditional static mixer internal structure complex, difficult to clean.

[0030] The concept, specific structure and generated technical effect of the utility model will be further explained in combination with the drawings, to fully understand the purpose, characteristics and effect of the utility model. DRAWINGS

[0031] Figure 1 It is the structural schematic diagram of traditional pipeline static mixer;

[0032] Figure 2 It is the structural schematic diagram of traditional small -size kettle dynamic mixer;

[0033] Figure 3 It is the structural schematic diagram of the micro pneumatic magnetic force mixer of continuous reaction of the utility model;

[0034] Figure 4 It is the structural schematic diagram of the driving part in the micro pneumatic magnetic force mixer of continuous reaction of the utility model;

[0035] Figure 5 It is the structural schematic diagram of the differential mechanism in the micro pneumatic magnetic force mixer of continuous reaction of the utility model;

[0036] Figure 6 It is the connection relation schematic diagram of right speed wheel, left speed wheel and differential mechanism in the micro pneumatic magnetic force mixer of continuous reaction of the utility model;

[0037] Figure 7 It is the connection relation diagram when right speed wheel is at maximum speed in the micro pneumatic magnetic force mixer of continuous reaction of the utility model;

[0038] Figure 8 It is the side view of the mixing part in the micro pneumatic magnetic force mixer of continuous reaction of the utility model;

[0039] Figure 9 It is the top view of the mixing part in the micro pneumatic magnetic force mixer of continuous reaction of the utility model;

[0040] Figure 10 It is the explosion view of the mixing part in the micro pneumatic magnetic force mixer of continuous reaction of the utility model.

[0041] Wherein: 1-drive part, 1-1- housing, 1-2- support, 1-3- pneumatic drive wheel, 1-4- right speed wheel, 1-5- left speed wheel, 1-6- differential, 1-7- differential control knob, 1-8- permanent magnet, 1-9- drive gas import, 1-10- drive gas export, 1-11- shaft, 1-12- gear, 1-13- sawtooth, 1-14- differential wheel, 2- mixing part, 2-1- reactor, 2-2- sight glass, 2-3- vacuum cavity, 2-4- stirring magnet, 2-6- temperature measuring point, 2-7- knob, 2-8- connecting shaft, 2-9- scraper, 2-10- cover, 2-11- material import, 2-12- material export, 2-13- sealing ring, 2-14- clamp, 2-15- gasket, 3- stirring motor, 4- stirring paddle, 5- heat exchange liquid import, 6- heat exchange liquid export, 7- heat exchange liquid jacket. DETAILED DESCRIPTION

[0042] In order to make the utility model realize the technical means, the creation characteristics, the purpose and the effect easy to understand, the following will be further described in combination with specific drawings. But the utility model is not limited to the following implementation cases.

[0043] It should be known that the structure, the proportion, the size and the like shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification for understanding and reading by the person skilled in the art, and are not used to limit the limiting conditions that the utility model can be implemented, so they do not have the substantial technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effect and the purpose that the utility model can produce, should still fall within the scope covered by the technical content disclosed by the utility model.

[0044] Chemical reactions are divided into continuous reaction and batch reaction. For large-scale production, continuous reaction is usually used as the main method; while batch reaction is usually used for small-batch or multi-variety production. Since continuous reaction has the advantages of high production efficiency, stable product quality and easy automatic control, products for small-batch production are also trying to use continuous reaction.

[0045] For continuous production of small-batch products, currently mainly involves two types of mixers. One is a pipeline static mixer, as shown in Figure 1 , which relies on the power of two or more materials to change the plug flow into turbulent flow through the cross-spiral structure to achieve the purpose of mixing. Since the cross-spiral structure is needed for turbulent mixing, if solid is generated, it is easy to cause blockage, affecting the normal progress of the reaction, and is also not conducive to cleaning. The other is a small-scale dynamic mixer, as shown in Figure 2 , which rotates the stirring paddle by a stirring motor to realize the mixing of materials. This type of reactor has a relatively large reaction kettle, which is difficult to achieve small amount mixing, resulting in waste of raw materials.

[0046] To this end, the inventor of the present application changes the traditional idea, replaces the mechanical stirring with magnetic stirring, but in view of the explosion problem of electromagnetic stirring in continuous production, the inventor of the present application designs a driving device, which drives the pneumatic driving wheel 1-3 through pneumatic driving, and further drives the permanent magnet 1-8 to rotate, and the stirring magnet 2-4 rotates accordingly, mixing the materials in the reactor, solving the problems of continuous production of small batch products and explosion-proof in continuous production process.

[0047] The utility model provides a micro pneumatic magnetic mixer for continuous reaction, including drive part 1 and the mixing part 2 in drive part 1 top, drive part 1 includes the shell 1-1 and the support 1-2 in shell 1-1 top, the shell 1-1 is in by lower to upper respectively provided with pneumatic drive chamber and variable speed chamber, pneumatic drive chamber is provided with drive gas import 1-9 and drive gas export 1-10, pneumatic drive chamber is provided with pneumatic drive wheel 1-3, and the rotation is carried out under the action of drive gas, and variable speed chamber (not drawn in the figure) is provided with right rotation speed wheel 1-4, left rotation speed wheel 1-5 and differential mechanism 1-6 between right rotation speed wheel 1-4, left rotation speed wheel 1-5, the shell 1-1 outer end is provided with differential mechanism control knob 1-7, is used for control differential mechanism 1-6 the gear that is in. Left rotation speed wheel 1-5 is fixedly connected with pneumatic drive wheel 1-3, and the rotation is carried out under the action of pneumatic drive wheel 1-3, and the top of right rotation speed wheel 1-4 is connected with permanent magnet 1-8.

[0048] Mixing part 2 includes reactor 2-1, sight glass 2-2 and vacuum cavity 2-3 between reactor 2-1 and sight glass 2-2, reactor 2-1 is located on support 1-2.

[0049] The internal volume of reactor 2-1 is 200 mL, which is suitable for continuous production of small batch products, and stirring magnet 2-4 is placed in reactor 2-1. Reactor 2-1 is provided with material inlet 2-11 at one end. Since reactor 2-1 involves the entry of multiple materials, material inlet 2-1 can be provided with multiple. Reactor 2-1 is also provided with material outlet 2-12, and material inlet 2-11 is arranged in the tangential direction of reactor 2-1. The reaction raw materials enter from material inlet 2-11, and the reaction products are discharged from material outlet 2-12, so that continuous reaction of reactor 2-1 can be realized. The cover 2-10 of reactor 2-1 is a high-pressure-resistant glass sheet, and the two ends of the high-pressure-resistant glass sheet are provided with sealing rings 2-13. The use of high-pressure-resistant glass sheet as cover 2-10 makes reactor 2-1 applicable to high-pressure reaction occasions.

[0050] A heat exchange cavity is provided on the outside of reactor 2-1, and a heat exchange liquid inlet 5 and a heat exchange liquid outlet 6 are provided on the heat exchange cavity. The heat exchange cavity can realize reactions under different reaction conditions of reactor 2-1. A temperature measuring point 2-6 is provided on reactor 2-1 for inserting a thermometer to detect the temperature in reactor 2-1.

[0051] The upper part of the reactor 2-1 is provided with a vacuum cavity 2-3, which is connected with the reactor 2-1 through a flange. By providing the vacuum cavity 2-3, the vacuum cavity 2-3 is filled with clear low-temperature heat-conducting oil, so as to avoid frost caused by low temperature in the vacuum cavity 2-3, which affects the observation of the stirring effect in the reactor 2-1 by the sight glass 2-2.

[0052] The upper part of the vacuum cavity 2-3 is provided with a sight glass 2-2, which is connected with the vacuum cavity 2-3 through a clamp. The upper part of the sight glass 2-2 is provided with a knob 2-7, and the two ends of the knob 2-7 are connected with scraper plates 2-9 through connecting shafts 2-8, respectively. The scraper plates 2-9 are in contact with the surface of the sight glass 2-2. The reaction in the reactor 2-1 can be carried out at room temperature or at low temperature. When it is a low-temperature reaction, frost may exist on the surface of the sight glass 2-2. By providing the knob 2-7, the scraper plates 2-9 are rotated to quickly remove the frost on the surface of the sight glass 2-2, which is convenient to operate.

[0053] Embodiment 1

[0054] As Figure 3 , 4 , 5, 6, a micro pneumatic magnetic mixer for continuous reaction, comprising a driving part 1 and a mixing part 2 located above the driving part 1, the driving part comprising a shell 1-1 and a support 1-2 located above the shell 1-1, the shell 1-1 is provided with a pneumatic driving cavity and a speed changing cavity from bottom to top, respectively, the pneumatic driving cavity is provided with a driving gas inlet 1-9 and a driving gas outlet 1-10, the pneumatic driving cavity is provided with a pneumatic driving wheel 1-3, which is driven by the driving gas to rotate, the speed changing cavity is provided with a right speed wheel 1-4, a left speed wheel 1-5 and a differential 1-6 located between the right speed wheel 1-4 and the left speed wheel 1-5, the differential 1-6 comprises a shaft body 1-11 and a differential wheel 1-14 sleeved on the shaft body 1-11, the differential wheel 1-14 is meshed with the right speed wheel 1-4 and the left speed wheel 1-5 to realize transmission. The lower end of the shaft body 1-11 is provided with a rectangular hole, and a gear 1-12 is arranged in the rectangular hole. The gear 1-12 is controlled to rotate by a differential control knob 1-7 arranged outside the shell 1-1, so as to control the gear position of the differential 1-6. One end of the rectangular hole is provided with a sawtooth 1-13 meshed with the gear 1-12. Rotating the differential control knob 1-7, the gear 1-12 rotates, the shaft body 1-11 moves upward or downward under the action of the sawtooth 1-13, and the differential wheel 1-14 sleeved on the shaft body 1-11 moves upward or downward, so as to adjust the rotating speed of the right speed wheel 1-4.

[0055] The left speed wheel 1-5 is fixedly connected with the pneumatic driving wheel 1-3 and rotates under the action of the pneumatic driving wheel 1-3. The top end of the right speed wheel 1-4 is connected with a permanent magnet 1-8.

[0056] As Figure 7 , the left speed wheel 1-5 is driven to rotate by the pneumatic drive wheel 1-3, and the left speed wheel 1-5 drives the right speed wheel 1-4 through the differential 1-6. Rotating the differential control knob 1-7 makes the differential 1-14 move downward, and when the differential 1-14 rotates to the bottom end, the right speed wheel 1-4 rotates at the maximum speed; when the differential control knob 1-7 is rotated in the opposite direction, the differential 1-14 moves upward, and when the differential 1-14 moves to the top end, the right speed wheel 1-4 rotates at the minimum speed.

[0057] As Figure 8 , 9 , 10, the mixing part 2 includes a reactor 2-1, a sight glass 2-2, and a vacuum cavity 2-3 located between the reactor 2-1 and the sight glass 2-2. The reactor 2-1 is a micro-reactor with an internal volume of 200 mL. The reactor 2-1 is located on the support 1-2, and a stirring magnet 2-4 is placed inside the reactor 2-1. One end of the reactor 2-1 is provided with a material inlet 2-11, and the other end is provided with a material outlet. The material inlet 2-11 is arranged in the tangential direction of the reactor 2-1. A heat exchange cavity is arranged outside the reactor 2-1, and a heat exchange liquid inlet 5 and a heat exchange liquid outlet 6 are arranged on the heat exchange cavity for heat exchange of the reactor 2-1, realizing relatively constant temperature reaction of the reactor 2-1 at low or high temperature. A temperature measuring point 2-6 is arranged on the reactor 2-1 for placing a thermometer to detect the temperature in the reactor 2-1. The cover 2-10 of the reactor 2-1 is a high-pressure resistant glass sheet, and the two ends of the high-pressure resistant glass sheet are respectively provided with sealing rings 2-13. The vacuum cavity 2-3 is connected with the reactor 2-1 through flanges, and the vacuum cavity 2-3 is filled with clear low-temperature heat-conducting oil to avoid frost caused by low temperature in the vacuum cavity 2-3, which affects the observation of the stirring effect in the reactor by the sight glass 2-2. The vacuum cavity 2-3 is connected with the sight glass 2-2 through a clamp. A knob 2-7 is arranged above the sight glass 2-2, and the two ends of the knob 2-7 are connected with scraper plates 2-9 through connecting shafts 2-8, respectively. The scraper plates 2-9 are in contact with the surface of the sight glass 2-2.

[0058] By introducing driving gas into the pneumatic drive cavity, the driving gas drives the pneumatic drive wheel 1-3 to rotate, and the left speed wheel 1-5 rotates accordingly. A differential 1-6 is arranged between the left speed wheel 1-5 and the right speed wheel 1-4. Through the control of the differential 1-6, the rotating speed of the right speed wheel 1-4 and the permanent magnet 1-8 connected with the right speed wheel 1-4 is within a suitable range, thereby controlling the rotating speed of the stirring magnet 2-4 in the reactor 2-1. Through pneumatic driving, the permanent magnet 1-8 and the stirring magnet 2-4 are rotated, so that the materials in the reactor 2-1 are uniformly mixed. Since the setting of the stirring paddle is avoided, the reactor 2-1 can be set to mL level, which not only satisfies the uniform mixing of materials, but also realizes small-batch production. In addition, the pneumatic driving magnetic stirring overcomes the problem of non-explosion-proof of traditional electromagnetic force driving.

[0059] The preferred embodiments of the present application are described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and changes without creative work based on the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the existing technology according to the concept of the present application shall be within the protection scope determined by the claims.

Claims

1. A micro pneumatic magnetic mixer for continuous reactions, characterized in that, The device comprises a driving part and a mixing part above the driving part, The driving part comprises a shell and a support above the shell, the shell is provided with a pneumatic driving cavity and a gear chamber from bottom to top, the pneumatic driving cavity is provided with a driving gas inlet and a driving gas outlet, the pneumatic driving cavity is provided with a pneumatic driving wheel, which rotates under the action of driving gas, the gear chamber is provided with a right speed wheel, a left speed wheel and a differential between the right speed wheel and the left speed wheel, the left speed wheel is fixedly connected with the pneumatic driving wheel and rotates under the action of the pneumatic driving wheel, the top end of the right speed wheel is connected with a permanent magnet; The mixing part comprises a reactor, a sight glass and a vacuum cavity between the reactor and the sight glass, the reactor is located on the support, and the reactor is provided with a stirring magnet.

2. The micro pneumatic magnetic mixer for continuous reactions according to claim 1, characterized in that, The differential comprises a shaft body and a differential wheel sleeved on the shaft body, the differential wheel is engaged with the right speed wheel and the left speed wheel, the shaft body is provided with a rectangular hole at the lower end, the rectangular hole is provided with a gear, the side surface of the rectangular hole is provided with a sawtooth engaged with the gear, and the gear is fixedly connected with a differential control knob provided on the outer end of the shell.

3. The micro pneumatic magnetic mixer for continuous reactions according to claim 1, characterized in that, The sight glass is provided with a knob above, the knob is connected with scrapers at both ends through connecting shafts, and the scrapers are in contact with the surface of the sight glass.

4. The micro-pneumatic magnetic mixer for continuous reactions according to claim 1, characterized in that, The reactor is provided with a material inlet and a material outlet, and the material inlet is arranged in the tangential direction of the reactor.

5. The micro-pneumatic magnetic mixers for continuous reactions as claimed in claim 1, wherein, The reactor is provided with a heat exchange cavity outside, and the heat exchange cavity is provided with a heat exchange liquid inlet and a heat exchange liquid outlet.

6. The micro pneumatic magnetic mixers for continuous reactions as claimed in claim 1 wherein, The reactor is provided with a temperature measuring part for detecting the temperature in the reactor.

7. The micro-pneumatic magnetic mixers for continuous reactions as claimed in claim 1 wherein, The cover of the reactor is a high-pressure resistant glass sheet, and the high-pressure resistant glass sheet is provided with a sealing ring at both ends.

8. The micro-pneumatic magnetic mixers for continuous reactions according to claim 1, characterized in that, The vacuum cavity is connected with the reactor through a flange.

9. The micro-pneumatic magnetic mixers for continuous reactions as claimed in claim 1 wherein, The vacuum cavity is connected with the sight glass through a clamp.

10. The micro-pneumatic magnetic mixers for continuous reactions as claimed in claim 1 wherein, The internal volume of the reactor is 200 mL.

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