Continuous production device for p-cymene

Abstract

The utility model discloses a p-cymene continuous production device, which belongs to the technical field of p-cymene production and comprises a base, two rotary bases are arranged on the top surface of the base, an air inlet disc box is rotatably connected onto one rotary base, and an air outlet disc box is rotatably connected onto the other rotary base. According to the reaction device disclosed by the utility model, the double-shaft motor is used for driving the transmission rod and the first synchronizing wheel to rotate, and the air inlet disc box, the air outlet disc box and the plurality of reaction tubes are driven to rotate through the transmission of the first synchronizing wheel, the second synchronizing wheel and the synchronous belt; the reaction tube is driven to rotate through transmission between the first gear and the second gear, and a catalyst in the catalyst placing chamber is continuously turned over through rotation of the reaction tube, so that the catalyst effectively reacts with atomized gas passing through the catalyst placing chamber, and the working quality of the cymene continuous production device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of p-cymene production, and more specifically to a p-cymene continuous production device. Background Art

[0002] p-Cymene, also known as 4-isopropyltoluene, is a compound with multiple uses. p-Cymene is a derivative of d-limonene and has a slightly wet rag smell. It has bactericidal, antiviral and immunostimulatory effects, is relatively irritating to the skin, and is not easily metabolized by the body. At present, the continuous production equipment of p-Cymene includes a material storage tank, a metering pump, a preheater, a vaporizer, a reactor, a condenser, a product storage tank and a heating device. The preheated industrial dipentene raw material is gasified by the vaporizer and passed into the reactor to react with the catalyst. The reaction product continuously enters the condenser connected to the bottom of the reactor. After condensation, it is directly collected by the condenser into the product storage tank. The obtained product is the p-Cymene product.

[0003] After searching, the utility model patent with the announcement number CN217962473U discloses a continuous production device for para-cymene, including: a material storage tank, a metering pump, a preheater, a gasifier, a reactor, a condenser, a product storage tank and a heating device, the reactor includes: a reaction part, a positioning connection part, a first connecting pipe, an air inlet plate, an air outlet plate and a second connecting pipe; the reaction part includes a connecting plate, a plurality of reaction tubes and a partition frame, a plurality of the reaction tubes are connected to the connecting plate through, and a partition frame is arranged inside the reaction tube, and the partition frame divides the inside of the reaction tube into a plurality of catalyst placement chambers; the continuous production device for para-cymene, by arranging the partition frame inside the reaction tube, divides the inside of the reaction tube into a plurality of catalyst placement chambers, so that the catalyst is evenly distributed in the reaction tube, so that it contacts with the atomized gas more fully, and the reaction speed is improved, wherein the partition frame and the catalyst are simple and convenient to load.

[0004] However, the above patent still has the following shortcomings: although multiple catalyst placement chambers are set, due to the weight of the catalyst, it will still accumulate at the bottom of the catalyst placement chamber, affecting the quality and efficiency of the reaction; and adding catalyst by disassembling the device is also somewhat cumbersome. For this reason, we propose a continuous production device for para-cymene. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a continuous production device for p-cymene.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A continuous production device for para-cymene comprises a base, wherein two rotating bases are arranged on the top surface of the base, one of the rotating bases is rotatably connected with an air inlet disk box, and the other rotating base is rotatably connected with an air outlet disk box, a plurality of reaction tubes are rotatably connected between the air inlet disk box and the air outlet disk box, a plurality of catalyst placement chambers are arranged inside the reaction tubes, filter screens are respectively arranged at both ends of the inner cavity of the catalyst placement chambers, a plurality of additive mechanisms are arranged on the outside of the reaction tubes, a driving mechanism is arranged at the end of the air outlet disk box, a dual-axis motor is fixedly installed on the top surface of the base, transmission rods are respectively fixedly connected at both ends of the dual-axis motor, first synchronous wheels are respectively fixedly sleeved on the outsides of the two transmission rods, second synchronous wheels are respectively fixedly sleeved on the outsides of the air inlet disk box and the air outlet disk box, and a synchronous belt is transmission-connected between the second synchronous wheel and the first synchronous wheel.

[0008] As a preferred solution of the utility model, the adding mechanism includes an injection tube fixedly sleeved on the outside of the reaction tube, the bottom end of the injection tube extends to the inner cavity of the catalyst placement chamber, two insertion holes are provided on the outer side of the injection tube, a sealing cover is provided on the outer side of the sealing cover, two telescopic grooves are provided on the outer walls of the two telescopic grooves, springs are respectively fixedly connected to the inner walls of the two telescopic grooves, a pull plate is fixedly connected to the end of the spring, a pin is fixedly connected to one end of the pull plate, one end of the pin is movably sleeved to the inner cavity of the insertion hole, the other end of the pull plate is fixedly connected to a pull ring, a hole-blocking column is fixedly connected to the top surface of the inner cavity of the sealing cover, and the bottom end of the hole-blocking column is movably sleeved to the inner cavity of the injection tube.

[0009] As a preferred solution of the utility model, the driving mechanism includes a servo motor fixedly mounted on the end face of the gas outlet plate box, the output shaft of the servo motor is fixedly sleeved with a first gear, the side of the first gear is meshed with a plurality of second gears, and the plurality of second gears are respectively fixedly sleeved on the outside of a plurality of reaction tubes.

[0010] As a preferred solution of the utility model, the ends of the air inlet disk box and the air outlet disk box are fixedly connected with inlet and outlet air pipes, and the ends of the inlet and outlet air pipes are fixedly sleeved with rotating joints.

[0011] As a preferred solution of the utility model, two support seats are fixedly connected to the top surface of the base, and the ends of the two transmission rods are rotatably connected to the support seats respectively.

[0012] As a preferred solution of the utility model, the outer diameter of the plug is equal to the inner diameter of the plug hole, and the inner diameter of the telescopic slot is equal to the outer diameter of the pull plate.

[0013] As a preferred solution of the utility model, the outer side surface of the hole-blocking column fits with the inner wall of the injection tube, and the inner side surface of the sealing cover fits with the outer side surface of the injection tube.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In the utility model, a dual-axis motor is used to drive the transmission rod and the first synchronous wheel to rotate, and the transmission of the first synchronous wheel, the second synchronous wheel and the synchronous belt drives the air inlet tray box, the air outlet tray box and a plurality of reaction tubes to rotate, and a servo motor is used to drive the first gear to rotate, and the transmission between the first gear and the second gear drives the reaction tube to rotate. The rotation of the reaction tube causes the catalyst in the catalyst placement chamber to continuously flip, so as to effectively react with the atomized gas passing through the catalyst placement chamber, thereby improving the working quality of the continuous production device for cymene.

[0016] (2) In the present invention, when it is necessary to add catalyst to the catalyst storage chamber, the pull ring is pulled to disengage the pin from the insertion hole to release the fixation between the cover and the injection tube. The cover can be removed to inject material into the catalyst storage chamber through the injection tube. After the injection, the cover is installed back to the outside of the injection tube, thereby realizing the function of convenient catalyst addition. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a structural schematic diagram of the base of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the reaction tube of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the reaction tube of the utility model;

[0021] Figure 5 It is a cross-sectional schematic diagram of the additive mechanism of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Base; 2. Rotating base; 3. Inlet tray box; 4. Outlet tray box; 6. Reaction tube; 7. Catalyst placement chamber; 8. Filter screen; 9. Additive adding mechanism; 10. Driving mechanism; 11. Double-axis motor; 12. Support seat; 13. Transmission rod; 14. First synchronous wheel; 15. Second synchronous wheel; 16. Synchronous belt; 17. Injection tube; 18. Cover; 19. Socket; 20. Telescopic slot; 21. Spring; 22. Pull plate; 23. Latch; 24. Pull ring; 25. Blocking column; 26. Servo motor; 27. First gear; 28. Second gear; 29. ​​Inlet and outlet pipes; 30. Rotary joint. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings 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.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Example:

[0028] See also Figure 1-5 A continuous production device for para-cymene comprises a base 1, wherein two rotating bases 2 are arranged on the top surface of the base 1, an air inlet box 3 is rotatably connected to one rotating base 2, an air outlet box 4 is rotatably connected to the other rotating base 2, a plurality of reaction tubes 6 are rotatably connected between the air inlet box 3 and the air outlet box 4, a plurality of catalyst placement chambers 7 are arranged inside the reaction tube 6, filter screens 8 are arranged at both ends of the inner cavity of the catalyst placement chamber 7, a plurality of additive mechanisms 9 are arranged on the outer side of the reaction tube 6, a driving mechanism 10 is arranged at the end of the air outlet box 4, a double-axis motor 11 is fixedly installed on the top surface of the base 1, transmission rods 13 are fixedly connected to the two ends of the double-axis motor 11, first synchronous wheels 14 are fixedly sleeved on the outer sides of the two transmission rods 13, second synchronous wheels 15 are fixedly sleeved on the outer sides of the air inlet box 3 and the air outlet box 4, and a synchronous belt 16 is transmission-connected between the second synchronous wheel 15 and the first synchronous wheel 14.

[0029] In this embodiment, the filter screen 8 is used to block both sides of the catalyst placement chamber 7 to prevent the catalyst from escaping from both ends of the catalyst placement chamber 7 , and the atomized gas reacts with the catalyst in the catalyst placement chamber 7 .

[0030] For details, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The adding mechanism 9 includes an injection tube 17 fixedly sleeved on the outside of the reaction tube 6, the bottom end of the injection tube 17 extends to the inner cavity of the catalyst placement chamber 7, two insertion holes 19 are provided on the outer side of the injection tube 17, a cover 18 is sleeved on the outer side of the injection tube 17, two telescopic grooves 20 are provided on the outer side of the cover 18, the inner walls of the two telescopic grooves 20 are respectively fixedly connected with springs 21, the ends of the springs 21 are fixedly connected with pull plates 22, one end of the pull plates 22 is fixedly connected with a latch 23, one end of the latch 23 is movably sleeved to the inner cavity of the insertion hole 19, the other end of the pull plates 22 is fixedly connected with a pull ring 24, the top surface of the inner cavity of the cover 18 is fixedly connected with a hole blocking column 25, and the bottom end of the hole blocking column 25 is movably sleeved to the inner cavity of the injection tube 17.

[0031] In this embodiment, the cover 18 is sealed on the injection tube 17 by the cooperation of the spring 21, the pull plate 22, the latch 23 and the insertion hole 19, and the catalyst is added to the catalyst placement chamber 7 through the injection tube 17.

[0032] For details, please refer to Figures 1 to 3 The driving mechanism 10 includes a servo motor 26 fixedly mounted on the end surface of the gas outlet tray box 4, the output shaft of the servo motor 26 is fixedly sleeved with a first gear 27, the side of the first gear 27 is meshed with a plurality of second gears 28, and the plurality of second gears 28 are respectively fixedly sleeved on the outer sides of the plurality of reaction tubes 6.

[0033] In this embodiment, the servo motor 26 is used to drive the first gear 27 to rotate, and the meshing transmission between the first gear 27 and the second gear 28 is used to drive the plurality of reaction tubes 6 to rotate.

[0034] For details, please refer to Figure 1 The ends of the air inlet and outlet boxes 3 and 4 are fixedly connected with air inlet and outlet pipes 29, and the ends of the air inlet and outlet pipes 29 are fixedly sleeved with rotary joints 30.

[0035] In this embodiment, the atomized gas is introduced into the air inlet box 3 through the air inlet and outlet pipes 29 on the side of the air inlet box 3 and the rotary joint 30, and the reacted gas is discharged through the air inlet and outlet pipes 29 and the rotary joint 30 on the side of the air outlet box 4.

[0036] For details, please refer to Figure 1The top surface of the base 1 is fixedly connected to two support seats 12 , and the ends of the two transmission rods 13 are rotatably connected to the support seats 12 respectively.

[0037] In this embodiment, the transmission rod 13 is supported by the support base 12 .

[0038] For details, please refer to Figure 5 The outer diameter of the latch pin 23 is equal to the inner diameter of the insertion hole 19 , and the inner diameter of the telescopic slot 20 is equal to the outer diameter of the pull plate 22 .

[0039] In this embodiment, the insertion of the latch 23 into the insertion hole 19 ensures the stability of the fixation between the injection tube 17 and the cover 18.

[0040] For details, please refer to Figure 5 The outer side surface of the hole blocking column 25 is in contact with the inner wall of the injection tube 17 , and the inner side surface of the cover 18 is in contact with the outer side surface of the injection tube 17 .

[0041] In this embodiment, the stability and sealing of the cover 18 installed on the outside of the injection tube 17 are ensured, and the quality of sealing the injection tube 17 is ensured by the fit between the outer side surface of the plugging column 25 and the inner wall of the injection tube 17.

[0042] Working principle: When in use, first connect the exhaust pipe of the atomized gas of the industrial dipentene raw material preheated by the gasifier to the rotary joint 30 on the side of the air inlet box 3, and also connect it to the subsequent condenser through the pipe and the rotary joint 30 on the side of the air outlet box 4, and then inject the catalyst into the catalyst placement chamber 7 through the injection pipe 17. After the catalyst is injected, the cover 18 is put on the outside of the injection pipe 17, and the plugging column 25 on the inside of the cover 18 is inserted into the inner cavity of the injection pipe 17. At this time, the elastic force of the spring 21 is used to drive the latch 23 to be inserted into the socket 19, so as to fix the cover 18 on the outside of the injection pipe 17, and then start the dual-axis motor 11 to drive the transmission rod 13 and the first synchronous wheel 14 to rotate, and drive the air inlet box 3 and the air outlet box 4 synchronously through the transmission of the first synchronous wheel 14, the second synchronous wheel 15 and the synchronous belt 16. The first gear 27 is driven by the servo motor 26 to rotate, and the meshing transmission between the first gear 27 and the second gears 28 is used to drive the reaction tube 6 to rotate, so that the catalyst in the catalyst placement chamber 7 is constantly flipped in the catalyst placement chamber 7. Finally, the atomized gas is introduced into the air inlet box 3 from the rotary joint 30 and the air inlet and outlet pipes 29, and the atomized gas in the air inlet box 3 enters the reaction tube 6. The atomized gas in the reaction tube 6 will pass through the filter screen 8 and enter the catalyst placement chamber 7, so that the atomized gas and the flipped catalyst are in contact and reacted. The reacted gas enters the air outlet box 4 and is discharged through the air inlet and outlet pipes 29 and the rotary joint 30 on the side of the air outlet box 4.

[0043] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A device for continuous production of para-cymene, comprising a base (1), characterized in that: The top surface of the base (1) is provided with two rotating bases (2), one of the rotating bases (2) is rotatably connected to an air inlet box (3), and the other rotating base (2) is rotatably connected to an air outlet box (4), a plurality of reaction tubes (6) are rotatably connected between the air inlet box (3) and the air outlet box (4), a plurality of catalyst placement chambers (7) are provided inside the reaction tubes (6), and filter screens (8) are provided at both ends of the inner cavity of the catalyst placement chambers (7), and a plurality of additive mechanisms ( 9), a driving mechanism (10) is provided at the end of the air outlet box (4), a double-axis motor (11) is fixedly mounted on the top surface of the base (1), the two ends of the double-axis motor (11) are respectively fixedly connected with transmission rods (13), the outer sides of the two transmission rods (13) are respectively fixedly sleeved with first synchronous wheels (14), the outer sides of the air inlet box (3) and the air outlet box (4) are respectively fixedly sleeved with second synchronous wheels (15), and a synchronous belt (16) is connected between the second synchronous wheel (15) and the first synchronous wheel (14) for transmission.

2. The continuous production device for p-cymene according to claim 1, characterized in that: The additive mechanism (9) comprises an injection tube (17) fixedly sleeved on the outside of the reaction tube (6), the bottom end of the injection tube (17) extending to the inner cavity of the catalyst placement chamber (7), two insertion holes (19) are provided on the outside of the injection tube (17), a sealing cover (18) is sleeved on the outside of the injection tube (17), two telescopic grooves (20) are provided on the outside of the sealing cover (18), and the inner walls of the two telescopic grooves (20) are respectively fixedly connected to springs. (21), the end of the spring (21) is fixedly connected to a pull plate (22), one end of the pull plate (22) is fixedly connected to a latch (23), one end of the latch (23) is movably connected to the inner cavity of the jack (19), the other end of the pull plate (22) is fixedly connected to a pull ring (24), the top surface of the inner cavity of the cover (18) is fixedly connected to a hole blocking column (25), the bottom end of the hole blocking column (25) is movably connected to the inner cavity of the injection tube (17).

3. The continuous production device of p-cymene according to claim 1, characterized in that: The driving mechanism (10) comprises a servo motor (26) fixedly mounted on the end surface of the gas outlet tray box (4); the output shaft of the servo motor (26) is fixedly sleeved with a first gear (27); the side of the first gear (27) is meshed with a plurality of second gears (28); the plurality of second gears (28) are respectively fixedly sleeved on the outside of a plurality of reaction tubes (6).

4. The continuous production device of p-cymene according to claim 1, characterized in that: The ends of the air inlet and outlet boxes (3) and (4) are fixedly connected with air inlet and outlet pipes (29), and the ends of the air inlet and outlet pipes (29) are fixedly sleeved with rotary joints (30).

5. The continuous production device of p-cymene according to claim 4, characterized in that: Two support seats (12) are fixedly connected to the top surface of the base (1), and the ends of the two transmission rods (13) are rotatably connected to the support seats (12) respectively.

6. The continuous production device of p-cymene according to claim 2, characterized in that: The outer diameter of the latch pin (23) is equal to the inner diameter of the insertion hole (19), and the inner diameter of the telescopic slot (20) is equal to the outer diameter of the pull plate (22).

7. The continuous production device of p-cymene according to claim 2, characterized in that: The outer side surface of the hole blocking column (25) is in contact with the inner wall of the injection tube (17), and the inner side surface of the sealing cover (18) is in contact with the outer side surface of the injection tube (17).

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