Benzene recovery device for phenylenediamine preparation

Abstract

The benzene recovery device comprises a reaction kettle and a connecting pipe, a butt joint opening is connected to the bottom end of the reaction kettle in an inserted mode and installed on an installation plate, the installation plate is installed at the bottom end of the reaction kettle through a limiting mechanism, and the end, away from the installation plate, of the connecting pipe is connected into an inserting sleeve in an inserted mode. The inserting sleeve is mounted on the outer wall of another reaction kettle, and the connecting pipe is connected with the inserting sleeve through a dismounting mechanism. According to the utility model, under the cooperative use of the dismounting mechanism and the limiting mechanism, the conditions of gas leakage and liquid leakage during connection between the connecting pipe and the reaction kettle are relieved, so that the stock of benzene in the recovery process is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of recycling devices, and particularly relates to a benzene recycling device for preparing phenylenediamine. Background Art

[0002] Phenylenediamine is an intermediate with wide applications, and is one of the simplest aromatic diamines. It can be used to prepare azo dyes and high molecular polymers, and can also be used to produce fur dyes, rubber antioxidants, and photographic developers, etc.

[0003] In the existing preparation process of phenylenediamine, a reaction kettle is connected through a connecting pipe. Most of the connecting pipes are rubber hoses, and there are situations of air leakage and liquid leakage when connecting to the reaction kettle. Content of the Utility Model

[0004] The utility model aims at the problems existing in the prior art and proposes the following technical solutions:

[0005] A benzene recycling device for preparing phenylenediamine includes a reaction kettle and a connecting pipe. A butting port is inserted at the bottom end of the reaction kettle, and the butting port is installed on a mounting plate. The mounting plate is installed at the bottom end of the reaction kettle through a limiting mechanism. One end of the connecting pipe away from the mounting plate is inserted into a plugging sleeve, and the plugging sleeve is installed on the outer wall of another reaction kettle. The connecting pipe and the plugging sleeve are connected through a dismounting and assembling mechanism.

[0006] Preferably, as the above technical solution, the limiting mechanism includes a plugging block inserted into the side wall of the mounting plate. The outer side of the plugging block is connected to a side pulling plate. The side pulling plate is installed on a first slider. The first slider slides on the outer wall of a sliding rod. The sliding rod is installed in a first limiting groove. The first limiting groove is symmetrically opened on the outer wall of the reaction kettle. A first elastic member is connected to the outer wall of the first slider, and one end of the first elastic member away from the first slider is connected in the first limiting groove. The middle of the first elastic member surrounds the outer wall of the sliding rod.

[0007] Preferably, as the above technical solution, a guiding plate is connected to the bottom end of the side pulling plate, and the top end of the guiding plate abuts against the outer wall of the mounting plate.

[0008] Preferably, as the above technical solution, a sealing plug is installed at the top end of the mounting plate, and the sealing plug is inserted into the bottom end of the reaction kettle.

[0009] Preferably, as the above technical solution, a sealing gasket is connected to the top end of the mounting plate, and the top end of the sealing gasket is adhesively bonded to the bottom end of the reaction kettle.

[0010] Preferably, as the above technical solution, the disassembly and assembly mechanism includes a limiting block inserted on the outer wall of the insertion sleeve, and the limiting block is installed on the pulling plate. One end of the pulling plate away from the limiting block is connected with a movable inner block. The bottom end of the movable inner block is connected with a second elastic member, and the bottom end of the second elastic member is connected in the second limiting groove. The second limiting groove is opened on the limiting plate, and the limiting plate is installed on the outer wall of the connecting pipe. The inner wall of the second limiting groove is symmetrically provided with slide rails, and a second slider is slidably connected in the slide rails. The second slider is installed on the outer wall of the movable inner block.

[0011] Preferably, as the above technical solution, a soft pad is glued to the bottom end of the pulling plate, and the bottom end of the soft pad abuts against the outer wall of the insertion sleeve.

[0012] The beneficial effects of the present utility model are as follows:

[0013] In this application, with the combined use of the disassembly and assembly mechanism and the limiting mechanism, the situation of air leakage and liquid leakage during the connection between the connecting pipe and the reaction kettle is alleviated, so as to ensure the stock of benzene during the recovery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The internal structure schematic diagram in the front view state provided by the embodiment of the present utility model is shown;

[0015] Figure 2 Shown in the embodiment of the present utility model provided Figure 1 The enlarged structure schematic diagram at A in;

[0016] Figure 3 Shown in the embodiment of the present utility model provided Figure 1 The enlarged structure schematic diagram at B in.

[0017] LEGEND DESCRIPTION:

[0018] 1. Reaction kettle; 2. Docking port; 3. Mounting plate; 4. Sealing plug; 5. Sealing gasket; 6. Insertion block; 7. Side pulling plate; 8. Guide plate; 9. First slider; 10. Slide bar; 11. First limiting groove; 12. First elastic member; 13. Connecting pipe; 14. Insertion sleeve; 15. Limiting plate; 16. Limiting block; 17. Soft pad; 18. Pulling plate; 19. Movable inner block; 20. Second slider; 21. Slide rail; 22. Second elastic member; 23. Second limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0020] In view of the problem of air leakage and liquid leakage when a rubber hose is connected to a reaction kettle in the prior art, the problem is alleviated by the combined use of a disassembly and assembly mechanism and a limiting mechanism, so that the air leakage and liquid leakage are alleviated when the connecting pipe 13 is connected to the reaction kettle 1, thereby ensuring the inventory of benzene during the recovery process.

[0021] As Figure 1 , Figure 2 and Figure 3 shown, in the embodiment of the present utility model, the benzene recovery device for preparing phenylenediamine includes a reaction kettle 1 and a connecting pipe 13; a butting interface 2 is inserted at the bottom end of the reaction kettle 1, and the butting interface 2 is installed on a mounting plate 3. The mounting plate 3 is installed at the bottom end of the reaction kettle 1 through a limiting mechanism. One end of the connecting pipe 13 away from the mounting plate 3 is inserted into a socket sleeve 14, and the socket sleeve 14 is installed on the outer wall of another reaction kettle 1. The connecting pipe 13 and the socket sleeve 14 are connected through a disassembly and assembly mechanism; under the combined use of the disassembly and assembly mechanism and the limiting mechanism, the air leakage and liquid leakage are alleviated when the connecting pipe 13 is connected to the reaction kettle 1, thereby ensuring the inventory of benzene during the recovery process; the limiting mechanism includes a plugging block 6 inserted into the side wall of the mounting plate 3, and the outside of the plugging block 6 is connected to a side pulling plate 7. The side pulling plate 7 is installed on a first slider 9. The first slider 9 slides on the outer wall of a slide rod 10. The slide rod 10 is installed in a first limiting groove 11. The first limiting groove 11 is symmetrically opened on the outer wall of the reaction kettle 1. A first elastic member 12 is connected to the outer wall of the first slider 9, and one end of the first elastic member 12 away from the first slider 9 is connected into the first limiting groove 11. The middle of the first elastic member 12 surrounds the outer wall of the slide rod 10; first, pull the side pulling plate 7 outward under the sliding action of the first slider 9 and the slide rod 10, drive the plugging block 6 to move outward. At this time, insert the butting interface 2 together with the mounting plate 3 at the bottom end of the reaction kettle 1. When the contact surfaces between the mounting plate 3 and the reaction kettle 1 are in contact and abutted, release the side pulling plate 7. Under the elastic reaction force of the first elastic member 12, the plugging block 6 is inserted into the mounting plate 3 to complete the limiting work of the mounting plate 3; a guiding plate 8 is connected to the bottom end of the side pulling plate 7, and the top end of the guiding plate 8 abuts against the outer wall of the mounting plate 3; under the action of the guiding plate 8, longitudinal limiting work is carried out on the mounting plate 3. At the same time, under the guiding action of the guiding plate 8, the plugging block 6 is conveniently inserted into the mounting plate 3; a sealing plug 4 is installed at the top end of the mounting plate 3, and the sealing plug 4 is inserted into the bottom end of the reaction kettle 1; under the plugging action of the sealing plug 4, the sealing efficiency of the insertion between the mounting plate 3 and the reaction kettle 1 is further ensured, and the benzene solution in the reaction kettle 1 is prevented from flowing out; a sealing gasket 5 is connected to the top end of the mounting plate 3, and the top end of the sealing gasket 5 is adhesively bonded to the bottom end of the reaction kettle 1; under the sealing action of the sealing gasket 5, the sealing efficiency of the installation between the reaction kettle 1 and the mounting plate 3 is further ensured.

[0022] As Figure 1 and Figure 3As shown in the figure; the disassembly and assembly mechanism includes a limiting block 16 inserted on the outer wall of the insertion sleeve 14, and the limiting block 16 is installed on the pull plate 18. One end of the pull plate 18 away from the limiting block 16 is connected with a movable inner block 19. The bottom end of the movable inner block 19 is connected with a second elastic member 22, and the bottom end of the second elastic member 22 is connected in a second limiting groove 23. The second limiting groove 23 is opened on the limiting plate 15. The limiting plate 15 is installed on the outer wall of the connecting pipe 13. Symmetric slide rails 21 are opened on the inner wall of the second limiting groove 23, and a second slider 20 is slidably connected in the slide rails 21. The second slider 20 is installed on the outer wall of the movable inner block 19; when pulling the pull plate 18 outward under the elastic potential energy of the second elastic member 22 and the sliding action of the second slider 20 and the slide rails 21, driving the limiting block 16 to move outward, at this time, insert the connecting pipe 13 into the insertion sleeve 14. After the limiting plate 15 abuts against the insertion sleeve 14, release the pull plate 18, so that under the action of the elastic reaction force of the second elastic member 22, drive the limiting block 16 to be inserted on the outer wall of the insertion sleeve 14, thereby completing the installation efficiency between the connecting pipe 13 and the insertion sleeve 14; a soft pad 17 is adhesively attached to the bottom end of the pull plate 18, and the bottom end of the soft pad 17 abuts against the outer wall of the insertion sleeve 14; under the protection of the soft pad 17, protect the contact surface between the pull plate 18 and the insertion sleeve 14.

[0023] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it.

Claims

1. Benzene recovery device for preparing phenylenediamine, comprising a reaction kettle (1) and a connecting pipe (13), characterized in that: The bottom end of the reactor (1) is plugged with a docking port (2), and the docking port (2) is installed on the mounting plate (3). The mounting plate (3) is installed at the bottom end of the reactor (1) through a limiting mechanism. One end of the connecting pipe (13) far from the mounting plate (3) is plugged into the plugging sleeve (14), and the plugging sleeve (14) is installed on the outer wall of another reactor (1). The connecting pipe (13) and the plugging sleeve (14) are connected through a disassembly and assembly mechanism.

2. The benzene recovery device for preparing phenylenediamine according to claim 1, characterized in that, The limiting mechanism includes a plugging block (6) plugged on the side wall of the mounting plate (3), and the outer side of the plugging block (6) is connected to the side pulling plate (7). The side pulling plate (7) is installed on the first slider (9). The first slider (9) slides on the outer wall of the sliding rod (10). The sliding rod (10) is installed in the first limiting groove (11). The first limiting groove (11) is symmetrically opened on the outer wall of the reactor (1). The outer wall of the first slider (9) is connected with a first elastic member (12), and one end of the first elastic member (12) far from the first slider (9) is connected in the first limiting groove (11). The middle of the first elastic member (12) is wound around the outer wall of the sliding rod (10).

3. The benzene recovery device for preparing phenylenediamine according to claim 2, characterized in that, The bottom end of the side pulling plate (7) is connected with a guiding plate (8), and the top end of the guiding plate (8) abuts against the outer wall of the mounting plate (3).

4. The benzene recovery device for preparing phenylenediamine according to claim 1, characterized in that, The top end of the mounting plate (3) is installed with a sealing plug (4), and the sealing plug (4) is plugged into the bottom end of the reactor (1).

5. The benzene recovery device for preparing phenylenediamine according to claim 1, characterized in that, The top end of the mounting plate (3) is connected with a sealing gasket (5), and the top end of the sealing gasket (5) is adhesively bonded to the bottom end of the reactor (1).

6. The benzene recovery device for preparing phenylenediamine according to claim 1, characterized in that, The disassembly and assembly mechanism includes a limiting block (16) plugged on the outer wall of the plugging sleeve (14). The limiting block (16) is installed on the pulling plate (18). One end of the pulling plate (18) far from the limiting block (16) is connected with a movable inner block (19). The bottom end of the movable inner block (19) is connected with a second elastic member (22), and the bottom end of the second elastic member (22) is connected in the second limiting groove (23). The second limiting groove (23) is opened on the limiting plate (15). The limiting plate (15) is installed on the outer wall of the connecting pipe (13). The inner wall of the second limiting groove (23) is symmetrically provided with slide rails (21), and a second slider (20) is slidably connected in the slide rails (21). The second slider (20) is installed on the outer wall of the movable inner block (19).

7. The benzene recovery device for preparing phenylenediamine according to claim 6, characterized in that, The bottom end of the pulling plate (18) is adhesively bonded with a soft pad (17), and the bottom end of the soft pad (17) abuts against the outer wall of the plugging sleeve (14).

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