Preparation device of tert-butyl acetate

Abstract

The utility model is applicable to the technical field of tert-butyl acetate preparation, and discloses a tert-butyl acetate preparation device which is characterized in that a fixed pipe is fixedly communicated between the bottoms of two groups of corrugated hoses, a discharge pipe is mounted at the bottom of the fixed pipe, a mounting frame is fixedly sleeved on the outer side surface of the fixed pipe, and a servo motor is fixedly mounted on the bottom surface of the mounting frame; the bottom surface of a transmission shaft of the servo motor is fixedly sleeved with a transmission gear through a coupler, a transmission gear ring is fixedly installed on the top surface of the discharging pipe, the outer side of the transmission gear is meshed with the inner side of the transmission gear ring, the bottom of the fixing pipe and the middle end of the top of the discharging pipe fixedly communicate with connecting pipes, and a rotating connector fixedly communicates between the side edges of the two connecting pipes. According to the technical scheme provided by the utility model, the spraying nozzle can be used for rotatably discharging the lewis acid raw material when the lewis acid raw material is fed and discharged, so that the lewis acid raw material can be fed to different positions of the material plane of the material mixing frame, the contact area of various mixed materials is increased, and the reaction rate of the mixed materials is improved.

Description

Technical Field

[0001] The utility model is applicable to the technical field of tert-butyl acetate preparation, and particularly relates to a device for preparing tert-butyl acetate. Background Art

[0002] At present, tert-butyl acetate, also known as tert-butyl acetate, is an organic compound mainly used as a solvent for digesting cellulose, etc. and a gasoline additive.

[0003] According to the patent (publication number "CN214288161U"), a preparation device for tert-butyl acetate includes a reaction kettle body, wherein a feeding port and a discharge pipe are respectively arranged at the upper and lower ends of the reaction kettle body, a first injection pipe group and a second injection pipe group are arranged on the reaction kettle body, a first cylinder and a second cylinder are respectively arranged at the left and right ends of the reaction kettle body, a switch, a fixing box and a control box are arranged on the reaction kettle body, a motor is arranged in the fixing box, a main shaft is arranged on the motor shaft of the motor, a stirring sheet is arranged on the outer wall surface of the main shaft, a mixing hole and a mixing groove are opened on the stirring sheet, the first injection pipe group and the second injection pipe group are both composed of an injection pipe, a telescopic pipe and an injection pipe head, which increases the effective contact area between the Lewis acid raw material and the racemic epichlorohydrin and aromatic methanol mixture already put in below, improves the acid catalytic effect during the later stirring, and improves the stirring and mixing efficiency of the racemic epichlorohydrin, aromatic methanol and Lewis acid.

[0004] However, in the above patent, the position of the feeding port is horizontally pushed and adjusted by the operation of the injection pipe and the electric push rod. In this process, the position of the feeding port can only be moved horizontally, which results in that when the raw material is transported, the raw material can only contact the racemic epichlorohydrin and aryl carbinol mixture located below it from a horizontal position, and the position of the feeding port is too single, and the contact area with the overall horizontal surface of the mixture is small, which affects the subsequent mixing reaction efficiency. Therefore, we propose a preparation device for tert-butyl acetate. Utility Model Content

[0005] The main purpose of the utility model is to provide a preparation device for tert-butyl acetate, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A preparation device for tert-butyl acetate comprises a tank body, both sides of the top of the tank body are fixedly connected with a feed pipe, a mixing frame is fixedly installed at the bottom of the outer side of the tank body, the bottom of each feed pipe is fixedly connected with a corrugated hose, the bottoms of two groups of corrugated hoses are fixedly connected with a fixed pipe, and a discharge pipe is installed at the bottom of the fixed pipe;

[0008] The outer surface of the fixed tube is fixedly sleeved with a mounting frame, the bottom surface of the mounting frame is fixedly mounted with a servo motor, the bottom surface of the servo motor transmission shaft is fixedly sleeved with a transmission gear through a coupling, the top surface of the discharge tube is fixedly mounted with a transmission gear ring, and the outer side of the transmission gear is meshed with the inner side of the transmission gear ring;

[0009] The bottom of the fixed pipe and the middle end of the top of the discharge pipe are both fixedly connected with connecting pipes, and the sides of the two groups of connecting pipes are fixedly connected with rotating joints.

[0010] By adopting the above technical solution, through the meshing transmission action of the transmission gear and the transmission ring gear, and the connection action of the rotary joint, the Lewis acid raw material can be put into different positions of the material plane of the mixing frame, thereby increasing the contact area of ​​various mixtures and improving the reaction rate of the mixture.

[0011] As an optional solution of the technical solution of the present application, a transmission frame is fixedly installed on the middle surface of the top inner wall of the tank body, a bidirectional screw is rotatably installed on the middle end of the transmission frame through a bearing, and transmission sleeves are movably sleeved on the outer end surfaces of the two-way screws, a connecting frame is fixedly installed on the outer bottom surface of each transmission sleeve, and the connecting frame is slidably inserted into the bottom end of the transmission frame, and a connecting frame is fixedly installed on the outer bottom surface of each transmission sleeve, and the connecting frame is slidably inserted into the bottom end of the transmission frame.

[0012] By adopting the above technical solution, the distance between the spray nozzle and the mixed material surface inside the mixing frame can be adjusted through the rotation transmission effect of the bidirectional screw on the transmission sleeve and the transmission conversion effect of the push rod, so as to avoid the spray nozzle being too far away, which may cause the Lewis acid raw material to drift arbitrarily during discharge and affect the reaction material amount, and further improve the preparation quality of tert-butyl acetate material.

[0013] As an optional solution of the technical solution of the present application, a rotating motor is fixedly mounted on the outer surface of the transmission frame, and the side of the rotating motor transmission shaft is fixedly connected to the outer side of the bidirectional screw rod through a coupling.

[0014] By adopting the above technical solution, the driving force for the rotation of the bidirectional screw rod is provided by rotating the driving structure of the motor.

[0015] As an optional solution of the technical solution of the present application, a spray nozzle is fixedly connected to the bottom of the discharge pipe, and the number of the spray nozzles is several groups.

[0016] By adopting the above technical solution, uniform spraying treatment of the material is achieved through the structural effect of the spray nozzle.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. A device for preparing tert-butyl acetate according to the technical solution of the present application, wherein a fixed pipe and a discharge pipe are connected by a rotary joint, and the meshing transmission action of a transmission gear and a transmission ring gear is combined, so that when a servo motor is running and drives the transmission gear to rotate, the transmission ring gear can rotate on its outside under the meshing transmission action of the transmission gear, thereby driving the discharge pipe to rotate synchronously under the fixed pipe, and then combined with the rotating connection action of the rotary joint, the fixed pipe and the discharge pipe are still in a connected state while rotating, so that the spray nozzle can rotate and discharge when feeding and discharging Lewis acid raw materials, so that the Lewis acid raw materials can be fed to different positions of the material plane of the mixing frame, thereby increasing the contact area of ​​multiple mixtures and improving the reaction rate of the mixture.

[0019] 2. A device for preparing tert-butyl acetate according to the technical solution of the present application, in which a transmission sleeve and a fixed tube are connected by a push rod, so that when the bidirectional screw rotates and drives the transmission sleeve to move horizontally, the push rod can convert the horizontal movement force of the transmission sleeve into a vertical push-pull force on the fixed tube and the discharge tube, thereby adjusting the distance between the spray nozzle and the mixed material surface inside the mixing frame, avoiding the spray nozzle being too far away, causing the Lewis acid raw material to scatter arbitrarily during discharge and affecting the reaction material amount, and further improving the preparation quality of tert-butyl acetate material. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a device for preparing tert-butyl acetate according to the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the top of a tank body of a device for preparing tert-butyl acetate according to the utility model;

[0022] Figure 3 It is a schematic diagram of the side cross-sectional structure of a transmission frame of a device for preparing tert-butyl acetate of the utility model;

[0023] Figure 4 The utility model is a schematic diagram of a top view of the cross-sectional structure of a discharge pipe of a device for preparing tert-butyl acetate.

[0024] Figure numerals: 1. tank body; 11. feed pipe; 12. mixing frame; 2. corrugated hose; 21. fixed pipe; 22. mounting frame; 23. servo motor; 24. transmission gear; 25. discharge pipe; 26. connecting pipe; 27. rotary joint; 28. transmission gear ring; 29. ​​spray nozzle; 3. transmission frame; 31. bidirectional screw rod; 32. transmission sleeve; 33. connecting frame; 34. push rod; 35. rotating motor. DETAILED DESCRIPTION

[0025] like Figure 1-4As shown, the utility model provides a technical solution: a device for preparing tert-butyl acetate, a transmission frame 3 is fixedly installed on the middle end surface of the top inner wall of the tank body 1, a bidirectional screw rod 31 is rotatably installed on the middle end of the transmission frame 3 through a bearing, and transmission sleeves 32 are movably sleeved on the outer end surfaces of the bidirectional screw rod 31, a rotating motor 35 is fixedly installed on the outer surface of the transmission frame 3, and the side of the transmission shaft of the rotating motor 35 is fixedly connected to the outer side of the bidirectional screw rod 31 through a coupling.

[0026] In this technical solution (through Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, a connecting frame 33 is fixedly installed on the outer bottom surface of each transmission sleeve 32, and a corresponding limiting groove is opened at the bottom of the transmission frame 32. The connecting frame 33 is inserted into the corresponding limiting groove to realize the rotation transmission limiting guide processing of the transmission sleeve 32. A push rod 34 is hinged on the bottom surface of each connecting frame 33 through a rotating shaft, and the bottom end of the push rod 34 is hinged to the outer top end of the fixed tube 21 through a rotating shaft.

[0027] In this technical solution (through Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown), both sides of the top of the tank body 1 are fixedly connected with a feed pipe 11, a mixing frame 12 is fixedly installed at the bottom of the outer side of the tank body 1, each feed pipe 11 is fixedly connected with a corrugated hose 2 at the bottom, and a fixed pipe 21 is fixedly connected between the bottoms of the two groups of corrugated hoses 2, and a discharge pipe 25 is installed at the bottom of the fixed pipe 21.

[0028] In this technical solution (through Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown), a mounting frame 22 is fixedly sleeved on the outer surface of the fixed tube 21, a servo motor 23 is fixedly mounted on the bottom surface of the mounting frame 22, a transmission gear 24 is fixedly sleeved on the bottom surface of the drive shaft of the servo motor 23 through a coupling, a transmission gear ring 28 is fixedly mounted on the top surface of the discharge pipe 25, and the outer side of the transmission gear 24 and the inner side of the transmission gear ring 28 are meshed.

[0029] In some technical solutions (through Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown), the bottom of the fixed pipe 21 and the middle end of the top of the discharge pipe 25 are fixedly connected with a connecting pipe 26, the sides of the two groups of connecting pipes 26 are fixedly connected with a rotating joint 27, the bottom of the discharge pipe 25 is fixedly connected with a spray nozzle 29, and the number of the spray nozzles 29 is several groups.

[0030] During operation, the racemic epichlorohydrin and aromatic methanol mixture is first fed into the mixing frame 12 through the feed pipe 11. Then, when the Lewis acid raw material needs to be fed, the rotating motor 35 is turned on through the external control switch to make it run and drive the bidirectional screw 31 to rotate. Combined with the rotation transmission effect of the bidirectional screw 31 on the transmission sleeve 32, the two sets of transmission sleeves 32 can be driven to move synchronously horizontally toward each other. Combined with the transmission conversion effect of the push rod 34, the horizontal movement force of the transmission sleeve 32 can be converted into a vertical driving force for the fixed pipe 21 and the discharge pipe 25. The distance between the spray nozzle 29 and the surface of the mixed material inside the mixing frame 12 is adjusted so that the spray nozzle 29 is close to the surface of the mixed material inside the mixing frame 12, and then the required feed is placed. After the Lewis acid raw material is transported to the inside of the corrugated hose 2 through the feed pipe 11, it is further transported to the fixed pipe 21, and then transported to the inside of the discharge pipe 25 and the spray nozzle 29 through the connecting pipe 26 and the rotary joint 27. The servo motor 23 is turned on synchronously under the action of the external control switch, so that it drives the transmission gear 24 to rotate, and the meshing transmission action of the transmission gear 24 and the transmission ring gear 28 drives the discharge pipe 25 and the spray nozzle 29 to rotate synchronously under the fixed pipe 21, so that the spray nozzle 29 can rotate and discharge when the Lewis acid raw material is fed and discharged, so that the Lewis acid raw material can be fed to different positions of the material plane of the mixing frame 12, thereby increasing the contact area of ​​various mixed materials and realizing the mixed preparation process of tert-butyl acetate.

Claims

1. A device for preparing tert-butyl acetate, comprising a tank (1), characterized in that: Both sides of the top of the tank body (1) are fixedly connected with a feed pipe (11), the outer bottom of the tank body (1) is fixedly installed with a mixing frame (12), the bottom of each feed pipe (11) is fixedly connected with a corrugated hose (2), the bottoms of two groups of corrugated hoses (2) are fixedly connected with a fixed pipe (21), and the bottom of the fixed pipe (21) is installed with a discharge pipe (25); The outer surface of the fixed tube (21) is fixedly sleeved with a mounting frame (22), the bottom surface of the mounting frame (22) is fixedly mounted with a servo motor (23), the bottom surface of the transmission shaft of the servo motor (23) is fixedly sleeved with a transmission gear (24) via a coupling, the top surface of the discharge tube (25) is fixedly mounted with a transmission gear ring (28), and the outer side of the transmission gear (24) and the inner side of the transmission gear ring (28) are meshed; The bottom of the fixed pipe (21) and the middle end of the top of the discharge pipe (25) are both fixedly connected with a connecting pipe (26), and a rotating joint (27) is fixedly connected between the sides of the two groups of connecting pipes (26).

2. A device for preparing tert-butyl acetate according to claim 1, characterized in that: A transmission frame (3) is fixedly mounted on the middle surface of the top of the inner wall of the tank body (1), a bidirectional screw rod (31) is rotatably mounted on the middle of the inner wall of the transmission frame (3) via a bearing, and transmission sleeves (32) are movably sleeved on both end surfaces of the outer sides of the bidirectional screw rod (31).

3. A device for preparing tert-butyl acetate according to claim 2, characterized in that: A connecting frame (33) is fixedly mounted on the outer bottom surface of each transmission sleeve (32), and the connecting frame (33) is slidably inserted into the bottom end of the transmission frame (3).

4. A device for preparing tert-butyl acetate according to claim 3, characterized in that: A push rod (34) is hingedly connected to the bottom surface of each connecting frame (33) via a rotating shaft, and the bottom end of the push rod (34) is hingedly connected to the top end of the outer side of the fixed tube (21) via the rotating shaft.

5. A device for preparing tert-butyl acetate according to claim 2, characterized in that: A rotating motor (35) is fixedly mounted on the outer surface of the transmission frame (3), and the side of the transmission shaft of the rotating motor (35) is fixedly connected to the outer side of the bidirectional screw rod (31) through a coupling.

6. A device for preparing tert-butyl acetate according to claim 1, characterized in that: The bottom of the discharge pipe (25) is fixedly connected to a spray nozzle (29), and the number of the spray nozzles (29) is several groups.

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