Condensation reaction device for producing difluorobenzonitrile

Abstract

The utility model discloses a condensation reaction device for difluorobenzonitrile production, which relates to the technical field of difluorobenzonitrile production and comprises a supporting seat, a condensation reaction kettle is fixedly arranged in the middle of the surface of the supporting seat in a penetrating manner, and a breathing mechanism is arranged on the inner wall of the left side of the condensation reaction kettle. The breathing mechanism is composed of a fixed cylinder, an upper air port, a lower air port, a telescopic spring and a sealing piston, the fixed cylinder is fixedly arranged on the inner wall of the left side of the condensation reaction kettle in a penetrating mode, and the upper air port is annularly formed in the position, located above the outer wall of the condensation reaction kettle, of the outer surface of the fixed cylinder; and a lower gas port is annularly formed in the outer surface of the fixed cylinder below the inner wall in the condensation reaction kettle. Compared with an existing common condensation reaction device for difluorobenzonitrile production, the condensation reaction device for difluorobenzonitrile production can automatically complete air pressure balancing work, does not need manual monitoring, does not need to use any electronic device for detection, is simple and practical in structure and extremely low in cost, and greatly improves practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of difluorobenzonitrile production, in particular to a condensation reaction device for producing difluorobenzonitrile. Background Art

[0002] Difluorobenzonitrile is an important intermediate that can be used in the synthesis of medicines, pesticides and fluorine-containing polymers. It can be used as an intermediate to synthesize Dolutegravir, a new anti-AIDS drug. The pesticides synthesized with it have strong selectivity, low usage, low toxicity to humans, and low residue. It is a type of green pesticide with very broad development prospects. Condensation reaction refers to the process of combining the same or different organic compound molecules with each other to precipitate one or several molecules of water or other compounds to form a new substance. In the production process of difluorobenzonitrile, different materials need to be poured into the condensation reactor for processing and mixing reaction to form difluorobenzonitrile.

[0003] For example, the public document with application number 202210633714.0 discloses a production device and processing method of 2,4-difluorobenzonitrile. The document uses the cylinder on the support rod to operate, so that the piston plate can push the gas inside the transfer tube, so that during its movement, the material is squeezed into the discharge pipe, and the phenomenon of material residue on the inner wall of the transfer tube can be reduced during the extrusion process, and then the material enters the corresponding reactor. In this solution, after the piston plate moves to the original position, the motor is used to drive the cross plate to move, so that the cross plate drives the cleaning cotton to contact the bottom of the piston plate, thereby achieving the effect of wiping and cleaning, and reducing the phenomenon of material residue at the bottom of the piston plate. In this solution, when the cleaning cotton that needs to be cleaned moves to the left side, the electric push rod can be used to drive the enclosure to move downward so that its bottom contacts the cross plate, and then the water pump is operated to introduce the water source in the water tank from the top conduit into the bottom conduit, and then the water source is sprayed out by the nozzle to rinse the cleaning cotton. The enclosure is used to block the water source during the rinsing process to reduce the flow of water into the transfer pipe. At the same time, during the subsequent rotation of the cross plate, the side of the enclosure can be used to contact the cleaning cotton to squeeze out the water source inside it, which is convenient for subsequent wiping and use. However, when difluorobenzonitrile is added to the condensation reactor for mixed reaction, some reactants will release gas and absorb gas in different processes, resulting in a difference in air pressure inside and outside the condensation reactor. The air pressure inside the reactor is difficult to be released or replenished in a timely and effective manner. Too large or too small air pressure values ​​will affect the reaction quality and reaction efficiency of difluorobenzonitrile.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a condensation reaction device for the production of difluorobenzonitrile is proposed. Utility Model Content

[0005] The utility model aims to provide a condensation reaction device for producing difluorobenzonitrile to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a condensation reaction device for producing difluorobenzonitrile, comprising a support seat, a condensation reactor is fixedly arranged through the middle part of the surface of the support seat, a breathing mechanism is arranged on the left inner wall of the condensation reactor, and the breathing mechanism is composed of a fixed cylinder, an upper air port, a lower air port, a telescopic spring and a sealing piston, a fixed cylinder is fixedly arranged through the left inner wall of the condensation reactor, the outer surface of the fixed cylinder is located above the outer wall of the condensation reactor and an upper air port is opened in an annular direction, the outer surface of the fixed cylinder is located below the inner wall of the condensation reactor and an lower air port is opened in an annular direction, telescopic springs are fixedly installed on the upper and lower ends of the inner surface of the fixed cylinder, a sealing piston is fixedly installed in the middle part of the opposite end of the telescopic spring, and the sealing piston and the inner wall of the condensation reactor are located on the same horizontal line.

[0007] Preferably, a feed port is installed on the right side above the outer surface of the condensation reaction kettle, and a driving motor is fixedly arranged in the middle above the outer surface of the condensation reaction kettle.

[0008] Preferably, the output end of the driving motor is provided with an adjustment mechanism through the condensation reactor, and the adjustment mechanism is composed of a reciprocating screw cylinder, a connecting spring, a transmission rod, a movable sleeve, a slider, an outer sleeve, a guide groove and a bearing ring.

[0009] Preferably, the output end of the driving motor passes through the condensation reactor and is fixedly installed with a reciprocating screw rod cylinder, and a connecting spring is fixedly installed on the upper end of the inner surface of the reciprocating screw rod cylinder, and a transmission rod is fixedly installed on the lower end of the connecting spring inside the reciprocating screw rod cylinder.

[0010] Preferably, a movable sleeve is threadedly connected to the outer surface of the reciprocating screw rod, and sliding blocks are fixedly installed on both left and right sides of the upper end of the outer surface of the movable sleeve.

[0011] Preferably, an outer sleeve is slidably sleeved on the outer surface of the movable sleeve, and the upper end of the outer sleeve is fixedly connected to the top end of the inner surface of the condensation reactor.

[0012] Preferably, guide grooves are provided on both left and right sides of the inner surface of the outer sleeve, and the slider is slidably arranged inside the guide grooves, and a bearing ring is fixedly arranged at the lower end of the movable sleeve.

[0013] Preferably, a stirring rod is fixedly mounted on the inner surface of the rotating ring body inside the bearing ring, and the upper end of the stirring rod is fixedly connected to the bottom end of the transmission rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model adopts the setting of the breathing mechanism. When the reaction is carried out inside the condensation reactor, the internal air pressure is too high, and the gas will enter the fixed cylinder through the lower air port, and then push the sealing piston upward, so that the lower telescopic spring is stretched and the upper telescopic spring is compressed, so that the sealing piston is displaced to the top of the inner surface of the fixed cylinder. At this time, the lower air port and the upper air port are connected through the fixed cylinder, and the excess gas inside the condensation reactor can be discharged. After the air pressure is balanced, the sealing piston loses the excessive air pressure on one side, and it will reset to the middle of the fixed cylinder under the elastic potential energy of the upper and lower telescopic springs, and block the upper and lower air ports again. On the contrary, if the internal air pressure of the condensation reactor is too low, the external air pressure will press the sealing piston to move downward to replenish gas, and the air pressure balancing work can be completed automatically without manual monitoring or any electronic device detection. The structure is simple and practical, the cost is extremely low, and the practicality is greatly improved.

[0016] 2. The utility model arranges a driving motor, an adjusting mechanism and a stirring rod. The driving motor can drive the stirring rod to rotate through the adjusting mechanism, so that the materials inside the condensation reactor are fully mixed and reacted. The driving motor preferentially drives the reciprocating screw barrel to rotate, which will drive the internal connecting spring to rotate, thereby rotating the transmission rod, driving the stirring rod to rotate and stir. At the same time, the movable sleeve will move up and down in a cycle due to the rotation of the reciprocating screw barrel under the limitation of the slider and the guide slide groove, and then drive the stirring rod to move up and down through the bearing ring. The connecting spring and the transmission rod can both be extended and maintain a continuous supply of rotational force. Due to the structure of the bearing ring itself, the stirring rod can move up and down with the movable sleeve, and can also rotate and stir with the transmission rod, so that the stirring rod can perform up and down movement type rotation stirring, which greatly improves the uniformity of the material mixing reaction, and improves the quality and efficiency of the material reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the breathing mechanism of the utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the condensation reaction kettle of the utility model;

[0020] Figure 4 It is a schematic cross-sectional structure diagram of the regulating mechanism of the utility model.

[0021] In the figure: 1. support seat; 2. condensation reactor; 3. breathing mechanism; 301. fixed cylinder; 302. upper air port; 303. lower air port; 304. telescopic spring; 305. sealing piston; 4. feed port; 5. driving motor; 6. adjusting mechanism; 601. reciprocating screw cylinder; 602. connecting spring; 603. transmission rod; 604. movable sleeve; 605. slider; 606. outer sleeve; 607. guide slide groove; 608. bearing ring; 7. stirring rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-Figure 2 As shown, a condensation reaction device for producing difluorobenzonitrile comprises a support seat 1, a condensation reactor 2 is fixedly arranged through the middle of the surface of the support seat 1, a breathing mechanism 3 is arranged on the left inner wall of the condensation reactor 2, and the breathing mechanism 3 is composed of a fixed cylinder 301, an upper air port 302, a lower air port 303, a telescopic spring 304 and a sealing piston 305. A fixed cylinder 301 is fixedly arranged through the left inner wall of the condensation reactor 2, the outer surface of the fixed cylinder 301 is located above the outer wall of the condensation reactor 2 and an upper air port 302 is annularly opened, the outer surface of the fixed cylinder 301 is located below the inner wall of the condensation reactor 2 and an lower air port 303 is annularly opened, the inner surface of the fixed cylinder 301 is fixedly installed on the upper and lower ends of the inner surface of the fixed cylinder 301, a sealing piston 305 is fixedly installed in the middle of the opposite end of the telescopic spring 304, and the sealing piston 305 and the inner wall of the condensation reactor 2 are located on the same horizontal line.

[0024] Furthermore, the fixed cylinder 301 is installed through the inner wall of the condensation reactor 2, and the upper air port 302 is located above the outside of the condensation reactor 2 on the surface of the fixed cylinder 301, and the lower air port 303 is located below the inner wall of the condensation reactor 2 on the surface of the fixed cylinder 301, so that the fixed cylinder 301 can connect the inside and outside of the condensation reactor 2 using the upper air port 302 and the lower air port 303.

[0025] Furthermore, the sealing piston 305 is located in the middle of the inner surface of the sliding fitting and the fixed cylinder 301 , blocking the upper air port 302 and the lower air port 303 , and can control the communication state of the upper air port 302 and the lower air port 303 .

[0026] Furthermore, the pressure difference between the inside and outside of the condensation reactor 2 can push the sealing piston 305 to move, thereby extending or contracting the telescopic springs 304 at the upper and lower ends. After the pressure is balanced, the telescopic spring 304 can use its own elastic force to reset the sealing piston 305 and block the upper air port 302 and the lower air port 303.

[0027] like Figure 3-Figure 4 As shown, a feed port 4 is installed on the right side above the outer surface of the condensation reactor 2, and a drive motor 5 is fixedly installed in the middle above the outer surface of the condensation reactor 2, and the output end of the drive motor 5 passes through the condensation reactor 2 and is provided with an adjustment mechanism 6, and the adjustment mechanism 6 is composed of a reciprocating screw rod cylinder 601, a connecting spring 602, a transmission rod 603, a movable sleeve 604, a slider 605, an outer sleeve 606, a guide slide groove 607 and a bearing ring 608. The output end of the drive motor 5 passes through the condensation reactor 2 and is fixedly installed with a reciprocating screw rod cylinder 601, and a connecting spring 602 is fixedly installed on the upper end of the inner surface of the reciprocating screw rod cylinder 601, and the lower end of the connecting spring 602 is located inside the reciprocating screw rod cylinder 601. A transmission rod 603 is installed, and the outer surface of the reciprocating screw rod tube 601 is threadedly connected with a movable sleeve 604, and sliders 605 are fixedly installed on the left and right sides of the upper end of the outer surface of the movable sleeve 604, and the outer surface of the movable sleeve 604 is slidably sleeved with an outer sleeve 606, and the upper end of the outer sleeve 606 is fixedly connected to the top of the inner surface of the condensation reactor 2, and the left and right sides of the inner surface of the outer sleeve 606 are provided with guide grooves 607, and the slider 605 is slidably set inside the guide groove 607, and the lower end of the movable sleeve 604 is fixedly provided with a bearing ring 608, and the inner surface of the rotating ring body inside the bearing ring 608 is fixedly installed with a stirring rod 7, and the upper end of the stirring rod 7 is fixedly connected to the bottom end of the transmission rod 603.

[0028] Furthermore, the reciprocating screw rod barrel 601 is connected to the output end of the driving motor 5, and can be directly driven to rotate by the driving motor 5, and the connecting spring 602 is fixed to the inner surface of the reciprocating screw rod barrel 601, and can thus rotate along with the reciprocating screw rod barrel 601. The transmission rod 603 rotates with the connecting spring 602 and the lower end rotates with the stirring rod 7. That is, when the reciprocating screw rod barrel 601 rotates, the connection between the connecting spring 602 and the transmission rod 603 can be utilized to drive the stirring rod 7 to rotate, thereby stirring and fully mixing the materials inside the condensation reactor 2.

[0029] Furthermore, the movable sleeve 604 is threadedly connected to the reciprocating screw rod 601, and the outer side of the movable sleeve 604 is limited by the slider 605 and the guide groove 607. When the reciprocating screw rod 601 rotates, the movable sleeve 604 can move up and down.

[0030] Furthermore, the outer ring body of the bearing ring 608 is fixedly connected to the movable sleeve 604, and the inner ring body is fixedly connected to the upper surface of the stirring rod 7. When the movable sleeve 604 moves, the bearing ring 608 can be used to drive the stirring rod 7 to move.

[0031] Furthermore, when the stirring rod 7 moves, the connecting spring 602 itself can extend to cooperate with the movement of the stirring rod 7 and always maintain effective transmission. The inner and outer rings of the bearing ring 608 are set so that the stirring rod 7 can not only follow the movable sleeve 604 to adjust its position up and down, but also follow the transmission rod 603 to rotate without interfering with each other, thereby enabling the stirring rod 7 to rotate up and down in a cycle to stir, thereby greatly improving the uniformity of the material mixing reaction and improving the quality and efficiency of the material reaction.

[0032] Working principle: When using the condensation reaction device for producing difluorobenzonitrile, first, add the materials required for the reaction through the feed port 4, seal the feed port 4 after adding, and then start the drive motor 5. The drive motor 5 will first drive the reciprocating screw barrel 601 to rotate, which will drive the internal connecting spring 602 to rotate, thereby rotating the transmission rod 603 and driving the stirring rod 7 to rotate and stir. At the same time, the movable sleeve 604 will move up and down in a circular motion due to the rotation of the reciprocating screw barrel 601 under the limitation of the slider 605 and the guide slot 607, and then drive the stirring rod 7 to move up and down through the bearing ring 608, while the connecting spring 602 and the transmission rod 603 can both extend and maintain a continuous supply of rotational force. Due to the structure of the bearing ring 608 itself, the stirring rod 7 can not only move up and down with the movable sleeve 604, but also rotate and stir with the transmission rod 603, so that the stirring rod 7 can rotate and move the material up and down. The upper and lower telescopic springs 304 are compressed, thereby causing the sealing piston 305 to move to the top of the inner surface of the fixed cylinder 301. At this time, the lower air port 303 and the upper air port 302 are connected through the fixed cylinder 301, and the excess gas in the condensation reactor 2 can be discharged. After the air pressure is balanced, the sealing piston 305 loses the excessive air pressure on one side and will reset to the middle of the fixed cylinder 301 under the elastic potential energy of the upper and lower telescopic springs 304, and block the upper and lower air ports 302 and 303 again. On the contrary, if the internal air pressure of the condensation reactor 2 is too low, the external air pressure will press the sealing piston 305 to move downward for gas replenishment, which can automatically complete the air pressure balance work. This is the working principle of the condensation reaction device for producing difluorobenzonitrile.

Claims

1. A condensation reaction device for producing difluorobenzonitrile, comprising a support base (1), characterized in that: A condensation reactor (2) is fixedly disposed through the middle of the surface of the support seat (1), a breathing mechanism (3) is disposed on the left inner wall of the condensation reactor (2), and the breathing mechanism (3) is composed of a fixed cylinder (301), an upper air port (302), a lower air port (303), a telescopic spring (304) and a sealing piston (305), a fixed cylinder (301) is fixedly disposed through the left inner wall of the condensation reactor (2), and the outer surface of the fixed cylinder (301) is located at the condensation reactor. An upper air inlet (302) is circumferentially provided on the upper outer wall of the reaction kettle (2); a lower air inlet (303) is circumferentially provided on the outer surface of the fixed cylinder (301) and located below the inner wall of the condensation reaction kettle (2); telescopic springs (304) are fixedly installed at the upper and lower ends of the inner surface of the fixed cylinder (301); a sealing piston (305) is fixedly installed in the middle of the opposite end of the telescopic spring (304); and the sealing piston (305) and the inner wall of the condensation reaction kettle (2) are located on the same horizontal line.

2. A condensation reaction device for producing difluorobenzonitrile according to claim 1, characterized in that: A feed port (4) is installed on the right side above the outer surface of the condensation reaction kettle (2), and a drive motor (5) is fixedly arranged in the middle above the outer surface of the condensation reaction kettle (2).

3. A condensation reaction device for producing difluorobenzonitrile according to claim 2, characterized in that: The output end of the driving motor (5) passes through the condensation reactor (2) and is provided with an adjusting mechanism (6), and the adjusting mechanism (6) is composed of a reciprocating screw rod (601), a connecting spring (602), a transmission rod (603), a movable sleeve (604), a slider (605), an outer sleeve (606), a guide groove (607) and a bearing ring (608).

4. A condensation reaction device for producing difluorobenzonitrile according to claim 2, characterized in that: The output end of the driving motor (5) passes through the condensation reactor (2) and is fixedly mounted with a reciprocating screw rod cylinder (601), and a connecting spring (602) is fixedly mounted on the upper end of the inner surface of the reciprocating screw rod cylinder (601), and a transmission rod (603) is fixedly mounted on the lower end of the connecting spring (602) located inside the reciprocating screw rod cylinder (601).

5. A condensation reaction device for producing difluorobenzonitrile according to claim 4, characterized in that: The outer surface of the reciprocating screw rod cylinder (601) is threadedly connected to a movable sleeve (604), and sliding blocks (605) are fixedly installed on both left and right sides of the upper end of the outer surface of the movable sleeve (604).

6. A condensation reaction device for producing difluorobenzonitrile according to claim 5, characterized in that: The outer surface of the movable sleeve (604) is slidably sleeved with an outer sleeve (606), and the upper end of the outer sleeve (606) is fixedly connected to the top end of the inner surface of the condensation reaction kettle (2).

7. A condensation reaction device for producing difluorobenzonitrile according to claim 6, characterized in that: The inner surface of the outer sleeve (606) is provided with guide grooves (607) on both sides thereof, and the slider (605) is slidably arranged inside the guide grooves (607), and a bearing ring (608) is fixedly arranged at the lower end of the movable sleeve (604).

8. A condensation reaction device for producing difluorobenzonitrile according to claim 7, characterized in that: A stirring rod (7) is fixedly mounted on the inner surface of the rotating ring body inside the bearing ring (608), and the upper end of the stirring rod (7) is fixedly connected to the bottom end of the transmission rod (603).

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