Reaction kettle for producing 2, 3-dichloropyridine

Abstract

The utility model discloses a reaction kettle for 2, 3-dichloropyridine production, which belongs to the technical field of 2, 3-dichloropyridine production, and comprises a reaction kettle body and a support plate, the two side surfaces of the reaction kettle body are hermetically connected with cylindrical transmission rods through opened through grooves, the end surfaces of the transmission rods are welded with moving blocks, the two side surfaces of the moving blocks are rotatably connected with movable rods through pin shafts, and the movable rods are fixedly connected with the support plate. The end faces of the two movable rods are rotationally connected with moving plates through pin shafts, stirring plates are welded to the side faces of the moving plates, limiting bearings are in interference fit with the side faces of the transmission rods, connecting plates are fixedly connected to the outer rings of the limiting bearings in an embedded mode, the bottom faces of the two connecting plates are welded to a hollow supporting plate, and two fixing plates are welded to the top face of the supporting plate. According to the reaction kettle disclosed by the utility model, by increasing the stirring range, full contact of 2, 3-dichloropyridine preparation raw materials is realized, and the production and processing efficiency of the reaction kettle on 2, 3-dichloropyridine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of 2,3-dichloropyridine production, and in particular relates to a reaction kettle for 2,3-dichloropyridine production. Background Technique

[0002] 2,3-dichloropyridine is a white powdery solid, usually prepared by reacting 2,3,6-trichloropyridine. Using 2,3,6-trichloropyridine as a raw material, a photocatalytic reaction is carried out in a methanol solvent containing a photocatalyst, and then 2,3-dichloropyridine can be obtained after purification. A reaction kettle is required for the chemical processing reaction. When the raw materials for 2,3-dichloropyridine production are mixed and reacted inside the reaction kettle, the raw materials for 2,3-dichloropyridine cannot be fully contacted, reducing the production and processing efficiency of the reaction kettle for 2,3-dichloropyridine.

[0003] Example (the authorized announcement number is CN208810055U) A hydrogenation reaction kettle for the preparation of 2,3-dichloropyridine, including a kettle body, a stirrer, a stirring shaft and a motor, is characterized in that: a liquid inlet, a hydrogen inlet, a nitrogen inlet, a vent port, a pressure gauge interface and a safety valve interface are provided at the upper end of the kettle body, a discharge port is provided at the lower end of the kettle body, the stirring shaft is arranged inside the kettle body, the stirrer is fixedly installed on the stirring shaft, and the upper end of the stirring shaft is connected to the motor; an internal heating spiral tube is arranged inside the kettle body, a first steam inlet is provided at one end of the internal heating spiral tube, and a first steam outlet is provided at the other end of the internal heating spiral tube; a jacket is sleeved outside the kettle body, an external heating cavity is formed between the outer wall of the kettle body and the inner wall of the jacket, a second steam inlet and a second steam outlet are provided on the jacket, and the second steam inlet is connected to the first steam outlet through a pipeline. The utility model can be specifically used for the hydrogenation reaction of 2,3-dichloropyridine preparation and can meet the reaction process requirements, but this reaction kettle does not consider that the production raw materials of 2,3-dichloropyridine are not easy to be fully contacted, reducing the production and processing efficiency of the reaction kettle for 2,3-dichloropyridine. Content of the Utility Model

[0004] The purpose of the utility model is to provide a reaction kettle for 2,3-dichloropyridine production to solve the problems raised in the background technique.

[0005] To achieve the above object, the present utility model provides the following technical solution: A reaction kettle for the production of 2,3-dichloropyridine, comprising a reaction kettle body and a support plate. Both side surfaces of the reaction kettle body are hermetically connected with cylindrical transmission rods through through grooves opened thereon. A moving block is welded to the end surface of the transmission rod. Both side surfaces of the moving block are rotatably connected with movable rods through pin shafts. Both end surfaces of the two movable rods are rotatably connected with a moving plate through pin shafts. A stirring plate is welded to the side surface of the moving plate. The side surface of the transmission rod is in interference fit with a limit bearing. A connecting plate is fixedly connected to the inner ring of the outer ring of the limit bearing. The bottom surfaces of the two connecting plates are welded to the support plate with a hollow interior. Two fixing plates are welded to the top surface of the support plate. The top surfaces of the two fixing plates are welded to the reaction kettle body through grooves opened thereon. The inner side wall of the support plate is rotatably connected with a threaded rod with reverse threads. Two threaded blocks are threadedly connected to the threaded rod. The top surface of the threaded block is welded to the connecting plate.

[0006] Preferably, two threaded blocks are slidably connected to the top of the support plate through through grooves opened thereon, and a driving motor is installed on the side surface of the support plate.

[0007] Preferably, the output shaft of the driving motor is detachably connected to the threaded rod through a bolt, and a rotating motor is installed on the side surface of one of the connecting plates.

[0008] Preferably, the output shaft of the rotating motor is detachably connected to the transmission rod through a bolt, and a feed pipe, a discharge pipe and a visual glass are respectively arranged on the outer side wall of the reaction kettle body.

[0009] Preferably, a cleaning component is arranged on the top surface of one of the fixing plates, and the cleaning component includes a rubber plate and an arc-shaped plate.

[0010] Preferably, the side surface of the visual glass abuts against the rubber plate, and a fixed bearing is fixedly connected to the inner side of the side surface of the rubber plate.

[0011] Preferably, a lead screw is in interference fit with the inner ring of the fixed bearing, the lead screw is threadedly connected to the arc-shaped plate, and a rotating block is welded to the end surface of the lead screw.

[0012] Preferably, a connecting block is fixedly connected to the bottom surface of the arc-shaped plate, and the moving part of a linear motor is detachably connected to the bottom surface of the connecting block through a bolt, and the fixed end of the linear motor is installed on the top surface of the fixing plate.

[0013] Compared with the prior art, the technical effects and advantages of the present utility model are:

[0014] The reactor for producing 2,3-dichloropyridine is facilitated to introduce the raw materials for preparing 2,3-dichloropyridine into the interior of the reactor body through the provided feed pipe. The rotation motor is provided to provide power, so that the output shaft of the rotation motor drives the transmission rod to rotate during the rotation process. During the transmission process, the two stirring plates perform circular movement, realizing the stirring of the raw materials for preparing 2,3-dichloropyridine inside the reactor body, achieving the full contact reaction of the raw materials for preparing 2,3-dichloropyridine, improving the production and processing efficiency of the reactor for 2,3-dichloropyridine. The provided driving motor provides power, facilitating the downward movement of the threaded block with reverse threads along the threaded path of the threaded rod. During the transmission process, the distance between the two moving blocks is adjusted, thereby controlling the stirring position of the two stirring plates, increasing the stirring effect, and further improving the production and processing efficiency of 2,3-dichloropyridine.

[0015] For the reactor for producing 2,3-dichloropyridine, the provided visual glass facilitates the irradiation of the sunlight from the outside on the raw materials for preparing 2,3-dichloropyridine inside the reactor body, thereby enabling the photocatalyst to take effect and realizing the production and processing of 2,3-dichloropyridine. The provided cleaning assembly facilitates the cleaning of dust and other sundries adhered to the surface of the visual glass, preventing the reduction of the visibility of the visual glass and the reduction of the production and processing effect of 2,3-dichloropyridine. During the movement of the moving part of the linear motor, the connecting block is driven to move. During the transmission process, the rubber plate performs lateral movement, realizing the cleaning of the dust adhered to the surface of the visual glass. Facilitating the downward movement of the lead screw along the threaded path of the arc-shaped plate strengthens the contact precision between the rubber plate and the visual glass and improves the cleaning effect on the surface of the visual glass. Brief Description of the Drawings

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is the structural schematic diagram of the present invention;

[0018] Figure 2 It is the structural schematic diagram of the support plate and the connecting plate of the present invention;

[0019] Figure 3 It is the structural schematic diagram of the moving plate and the stirring plate of the present invention;

[0020] Figure 4 It is the structural schematic diagram of the cleaning assembly of the present invention;

[0021] Figure 5This is a schematic structural diagram of the rotating block of the present utility model.

[0022] Explanation of reference numerals in the drawings:

[0023] In the figure: 1, reaction kettle body; 2, support plate; 3, transmission rod; 4, moving block; 5, movable rod; 6, moving plate; 7, stirring plate; 8, limit bearing; 9, connecting plate; 10, threaded block; 11, threaded rod; 12, rotating motor; 13, driving motor; 14, feed pipe; 15, discharge pipe; 16, visual glass; 17, cleaning assembly; 18, rubber plate; 19, arc plate; 20, lead screw; 21, rotating block; 22, fixed bearing; 23, connecting block; 24, linear motor; 25, fixing plate. Specific embodiments

[0024] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0025] Unless otherwise defined, the up, down, left, right, front, back, inner and outer directions involved in this article are based on the up, down, left, right, front, back, inner and outer directions in the figures shown in the present utility model, and are hereby explained together.

[0026] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., depending on actual needs.

[0027] In order to solve the problem that the reaction kettle for the production of 2,3-dichloropyridine is not convenient to make the production raw materials of 2,3-dichloropyridine fully contact, reducing the production and processing efficiency of the reaction kettle for 2,3-dichloropyridine, please refer to Figures 1 to 5 , the structure of the device body is a reaction kettle body 1 and a support plate 2. The outer side walls of the reaction kettle body 1 are respectively provided with a feed pipe 14, a discharge pipe 15 and a visual glass 16, so that the feed pipe 14 and the discharge pipe 15 are communicated with the reaction kettle body 1, which is convenient to introduce raw materials for the preparation of 2,3-dichloropyridine such as 2,3,6-trichloropyridine and methanol solvent containing a photocatalyst into the reaction kettle body 1 through the feed pipe 14 to realize the production and processing of 2,3-dichloropyridine, and the processed 2,3-dichloropyridine is exported through the discharge pipe 15. At the same time, the side surface of the reaction kettle body 1 is fixedly connected with the visual glass 16 through a through groove opened, which is convenient to make sunlight irradiate into the reaction kettle body 1 for photocatalytic reaction. The two side surfaces of the reaction kettle body 1 are hermetically connected with cylindrical transmission rods 3 through through grooves opened, which is convenient to realize the flexible movement of the two transmission rods 3.

[0028] A moving block 4 is welded to the end face of the transmission rod 3. The two side faces of the moving block 4 are rotatably connected to the movable rods 5 through pin shafts. The end faces of the two movable rods 5 are rotatably connected to the moving plate 6 through pin shafts. When the two moving blocks 4 move centripetally, under the connection action provided by the movable rods 5, the two moving plates 6 move centripetally. A stirring plate 7 is welded to the side face of the moving plate 6, which is convenient for controlling the stirring position of the 2,3-dichloropyridine preparation raw materials inside the reaction kettle body 1 by the two stirring plates 7, improving the stirring effect on the 2,3-dichloropyridine preparation raw materials, realizing the full mixing of the 2,3-dichloropyridine preparation raw materials, and improving the production and processing efficiency of the reaction kettle for 2,3-dichloropyridine. An interference fit limit bearing 8 is arranged on the side face of the transmission rod 3, and a connecting plate 9 is fixedly connected to the inner ring of the outer ring of the limit bearing 8. The arranged limit bearing 8 fixes the rotation position of the transmission rod 3.

[0029] The bottom surfaces of the two connecting plates 9 are welded to the internally hollow support plate 2. The arranged connecting plate 9 provides a supporting function. Two fixing plates 25 are welded to the top surface of the support plate 2. One end of the discharge pipe 15 away from the reaction kettle body 1 penetrates through the fixing plate 25. The top surfaces of the two fixing plates 25 are welded to the reaction kettle body 1 through the grooves opened. The arranged two fixing plates 25 provide a supporting function for the reaction kettle body 1. A threaded rod 11 with reverse threads is rotatably connected to the inner side wall of the support plate 2. The threaded rod 11 is threadedly connected to two threaded blocks 10. The arranged two threaded blocks 10 have reverse threads. The top surface of the threaded block 10 is welded to the connecting plate 9. When the threaded rod 11 rotates, the two threaded blocks 10 move downward along the threaded path of the threaded rod 11, which is convenient for realizing the reverse movement of the two connecting plates 9 during the transmission process.

[0030] Two threaded blocks 10 are slidably connected to the top of the support plate 2 through the through grooves opened, so that the top surfaces of the two threaded blocks 10 penetrate through the inner top wall of the support plate 2. A driving motor 13 is installed on the side face of the support plate 2. The fixed end of the driving motor 13 is detachably connected to the side face of the support plate 2 through bolts. The output shaft of the driving motor 13 is detachably connected to the threaded rod 11 through bolts, which is convenient for driving the threaded rod 11 to rotate during the rotation of the output shaft of the driving motor 13. A rotating motor 12 is installed on the side face of one of the connecting plates 9. The fixed end of the rotating motor 12 is detachably connected to the side face of one of the connecting plates 9 through bolts. The output shaft of the rotating motor 12 is detachably connected to the transmission rod 3 through bolts. When the output shaft of the rotating motor 12 rotates, it drives the transmission rod 3 to rotate. During the transmission process, the two stirring plates 7 move in a circular motion, realizing the stirring of the 2,3-dichloropyridine preparation raw materials inside the reaction kettle body 1, realizing the full contact of the 2,3-dichloropyridine preparation raw materials, and improving the production and processing efficiency of the reaction kettle for 2,3-dichloropyridine.

[0031] A cleaning component 17 is provided on the top surface of one of the fixing plates 25. By providing the cleaning component 17, it is convenient to clean dust and other sundries adhered to the surface of the visual glass 16, prevent the visibility of the visual glass 16 from being reduced, and facilitate sunlight to shine into the reaction kettle body 1, providing conditions for the production and processing of 2,3-dichloropyridine. The cleaning component 17 includes a rubber plate 18 and an arc-shaped plate 19. The provided rubber plate 18 fits the surface of the visual glass 16, and the side of the visual glass 16 abuts against the rubber plate 18, facilitating the cleaning of dust and other sundries adhered to the surface of the visual glass 16 during the movement of the rubber plate 18. A fixed bearing 22 is fixedly connected to the inner side of the rubber plate 18 in an embedded manner. The inner ring of the fixed bearing 22 is in interference fit with a lead screw 20. The provided fixed bearing 22 fixes the rotation position of the lead screw 20 and at the same time facilitates the relative rotation of the lead screw 20 and the rubber plate 18. The lead screw 20 is threadedly connected to the arc-shaped plate 19.

[0032] The lead screw 20 is moved along the threaded path of the arc-shaped plate 19. During the transmission process, it is convenient to control the position of the rubber plate 18, strengthen the contact tightness between the rubber plate 18 and the visual glass 16, and improve the cleaning effect on the surface of the visual glass 16. A rotating block 21 is welded to the end face of the lead screw 20. A connecting block 23 is fixedly connected to the bottom surface of the arc-shaped plate 19. The bottom surface of the connecting block 23 is detachably connected to the moving part of a linear motor 24 by bolts. The fixed end of the linear motor 24 is installed on the top surface of the fixing plate 25. The fixed end of the linear motor 24 is detachably connected to the top surface of the fixing plate 25 by bolts to fix the position of the linear motor 24. During the movement of the moving part of the linear motor 24, the connecting block 23 is driven to move. During the transmission process, the lateral movement of the rubber plate 18 is realized, so that the rubber plate 18 provides a scraping and cleaning effect on dust and other sundries adhered to the surface of the visual glass 16.

[0033] The rotating motor 12, the driving motor 13, and the linear motor 24 are all prior arts. Their working principles, sizes, and models are irrelevant to the functions of this application, so no more descriptions are made. The control method of the present utility model is controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the present utility model is mainly used to protect mechanical devices, so the control method and circuit connection of the present utility model are not explained in detail.

[0034] Working principle

[0035] For the reactor used in the production of 2,3-dichloropyridine, when in use, the user introduces the raw materials for the preparation of 2,3-dichloropyridine into the reactor body 1 through the feed pipe 14, starts the rotary motor 12, and during the transmission process, makes the two stirring plates 7 move circumferentially, realizing the stirring of the raw materials for the preparation of 2,3-dichloropyridine, improving the production and processing efficiency of 2,3-dichloropyridine. Start the drive motor 13, so that the two threaded blocks 10 move centripetally along the threaded path of the threaded rod 11. During the transmission process, make the two moving blocks 4 move centripetally. Under the connection provided by the two pairs of movable rods 5, it is convenient to realize the centripetal movement of the two moving plates 6, and then control the stirring position of the two stirring plates 7, improve the stirring effect of the raw materials for the preparation of 2,3-dichloropyridine, realize their full contact, and improve the production and processing efficiency of the reactor for 2,3-dichloropyridine.

[0036] Through the provided visual glass 16, it is convenient for external solar energy to irradiate into the reactor body 1, realizing the photocatalytic reaction for the preparation of 2,3-dichloropyridine. The provided cleaning assembly 17 is convenient for cleaning dust and other sundries adhered to the surface of the visual glass 16, preventing dust and other sundries from adhering to the surface of the visual glass 16 and reducing its light transmission effect. Start the linear motor 24. During the movement of the moving part of the linear motor 24, drive the connecting block 23 to move horizontally. During the transmission process, make the rubber plate 18 move, cleaning the dust and other sundries adhered to the surface of the visual glass 16, making the rotating block 21 rotate, and then making the lead screw 20 move along the threaded path of the arc plate 19. During the transmission process, it is convenient to adjust the position of the rubber plate 18, strengthen the contact tightness between the rubber plate 18 and the visual glass 16, and then improve the surface cleaning effect of the visual glass 16.

[0037] It should be noted that in this article, relational terms such as "one" and "two" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reactor for producing 2,3-dichloropyridine, comprising a reactor body (1) and a support plate (2), characterized in that: The two side surfaces of the reactor body (1) are sealedly connected to cylindrical transmission rods (3) through through grooves, the end surfaces of the transmission rods (3) are welded with moving blocks (4), the two side surfaces of the moving blocks (4) are rotatably connected to movable rods (5) through pins, the end surfaces of the two movable rods (5) are rotatably connected to movable plates (6) through pins, and the sides of the movable plates (6) are welded with stirring plates (7); The transmission rod (3) is interference-fitted with a limit bearing (8) on the side surface; a connecting plate (9) is embedded and fixedly connected to the outer ring of the limit bearing (8); the bottom surfaces of the two connecting plates (9) are welded to the internal hollow support plate (2); the top surface of the support plate (2) is welded with two fixing plates (25); the top surfaces of the two fixing plates (25) are welded to the reactor body (1) via grooves; the inner side wall of the support plate (2) is rotatably connected to a threaded rod (11) having reverse threads; the threaded rod (11) is threadedly connected to two threaded blocks (10); the top surfaces of the threaded blocks (10) are welded to the connecting plate (9).

2. A reaction kettle for producing 2,3-dichloropyridine according to claim 1, characterized in that: Two threaded blocks (10) are slidably connected to the top of the support plate (2) via a through slot, and a drive motor (13) is mounted on the side of the support plate (2).

3. A reaction kettle for producing 2,3-dichloropyridine according to claim 2, characterized in that: The output shaft of the driving motor (13) is detachably connected to the threaded rod (11) via bolts, and a rotating motor (12) is mounted on the side of one of the connecting plates (9).

4. A reaction kettle for producing 2,3-dichloropyridine according to claim 3, characterized in that: The output shaft of the rotating motor (12) is detachably connected to the transmission rod (3) via bolts, and the outer side wall of the reactor body (1) is respectively provided with a feed pipe (14), a discharge pipe (15) and a sight glass (16).

5. A reaction kettle for producing 2,3-dichloropyridine according to claim 4, characterized in that: A cleaning assembly (17) is provided on the top surface of one of the fixed plates (25), and the cleaning assembly (17) comprises a rubber plate (18) and an arc-shaped plate (19).

6. A reaction kettle for producing 2,3-dichloropyridine according to claim 5, characterized in that: The side surface of the visual glass (16) abuts against the rubber plate (18), and a fixed bearing (22) is embedded and fixedly connected to the side surface of the rubber plate (18).

7. A reaction kettle for producing 2,3-dichloropyridine according to claim 6, characterized in that: The inner ring of the fixed bearing (22) is interference-fitted with a screw rod (20), the screw rod (20) is threadedly connected to the arc-shaped plate (19), and a rotating block (21) is welded to the end surface of the screw rod (20).

8. A reaction kettle for producing 2,3-dichloropyridine according to claim 7, characterized in that: The bottom surface of the arc-shaped plate (19) is fixedly connected to a connecting block (23), the bottom surface of the connecting block (23) is detachably connected to a moving part of a linear motor (24) via bolts, and the fixed end of the linear motor (24) is mounted on the top surface of the fixing plate (25).

Images