A mixed kettle for producing p-benzoquinone by aniline oxidation method

Abstract

The invention discloses a mixing kettle for generating p-benzoquinone by aniline oxidation method, and relates to the technical field of mixing kettles. The mixing kettle for generating p-benzoquinone by aniline oxidation method comprises a kettle body arranged on the mixing kettle body, a discharge valve is arranged at the bottom of the kettle body, and a feed valve is arranged at the top of the kettle body, and a moving rod is inserted at the top of the kettle body. The mixing kettle for generating p-benzoquinone by aniline oxidation method can make the stirring rod reciprocate forward and reverse during mixing, and at the same time, the vertical plate and the horizontal plate are driven to reciprocate up and down by the moving disk, so that the stirring and mixing efficiency is higher and the effect is better, and it is convenient to introduce air into the solution, which can improve the efficiency and effect of the reaction; after the reaction is completed, the kettle body can be vacuumed to avoid the escape of waste gas, which is more healthy and environmentally friendly, and it is convenient to recover excess manganese dioxide for subsequent continued use, which is more convenient and quick to use.

Description

Technical Field

[0001] The invention relates to the technical field of mixing kettles, in particular to a mixing kettle for generating p-benzoquinone by an aniline oxidation process. Background Art

[0002] When aniline oxidation method is used to generate p-benzoquinone, raw materials such as aniline, sulfuric acid and manganese dioxide need to be put into a mixing kettle for stirring and mixing reaction. Manganese dioxide oxidizes aniline into p-benzoquinone under the action of sulfuric acid. Due to excess sulfuric acid and manganese dioxide, a mixture of p-benzoquinone, sulfuric acid, manganese dioxide, ammonium sulfate, manganese sulfate and water is formed. Then, distillation is performed: the above mixture is added to the upper part of the distillation tower, and contacts with steam added from the lower part through a floating valve plate. P-benzoquinone is volatile and is carried out by water vapor. After condensation, a p-benzoquinone aqueous solution is formed. The p-benzoquinone is cooled, crystallized and dried to obtain p-benzoquinone. Finally, post-treatment is performed: after the bottom flow flows out, a mixed aqueous solution of manganese sulfate and ammonium sulfate is formed through the steps of neutralization, filtration, decolorization, impurity removal, etc., and ammonium bicarbonate is added to form manganese carbonate precipitation. Manganese carbonate is obtained after centrifugation and drying, and the mother liquor is concentrated to obtain ammonium sulfate.

[0003] However, the existing mixing kettle for producing para-benzoquinone by the aniline oxidation method has low stirring and mixing efficiency and poor effect when in use. At the same time, it is not convenient to introduce air into the solution, which affects the efficiency and effect of the reaction. After the reaction is completed, it is not convenient to collect the exhaust gas, which easily leads to the escape of the exhaust gas, which is not healthy and environmentally friendly. In addition, it is not convenient to recycle and reuse the excess manganese dioxide, which is not energy-saving and environmentally friendly. Summary of the invention

[0004] The object of the present invention is to provide a mixed kettle for producing p-benzoquinone by aniline oxidation method, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mixing kettle for producing para-benzoquinone by an aniline oxidation method, comprising a kettle body arranged on a mixing kettle body, a discharge valve being arranged at the bottom of the kettle body, and a feed valve being arranged at the top of the kettle body, a moving rod being inserted at the top of the kettle body, and the moving rod being connected to the top of the kettle body through a first reset mechanism, a stirring shaft being fixedly connected at the lower end of the moving rod, and a plurality of groups of first support plates arranged in an array being fixedly connected to the side walls of the stirring shaft, and the number of the first support plates in each group is two, a stirring rod being fixedly connected to the side walls opposite to the first support plates in each group, and a moving disk being sleeved on the side walls of the stirring rod, and the moving disk The top of the kettle body is provided with a plurality of through holes arranged in an array, and the movable plate is connected to the side wall of the movable rod through a lifting mechanism, the side wall of the movable plate is fixedly sleeved with an annular cover, and the inner side wall of the annular cover is provided with a plurality of air holes arranged in an array, the top of the kettle body is fixedly connected with an L-shaped frame, and the bottom of the L-shaped frame is rotatably connected with a rotating rod, a connecting mechanism is provided between the rotating rod and the movable rod, the movement of the movable rod is driven by a first pushing mechanism, and a stirring mechanism is provided on the top of the movable plate, the rotation of the rotating rod is driven by a first driving mechanism, and a second driving mechanism for driving the air holes for blowing and exhausting is provided on the top of the kettle body.

[0006] Preferably, the first reset mechanism includes a fixed ring fixedly sleeved on the side wall of the moving rod, and the side wall of the moving rod is sleeved with a rotating ring, the rotating ring is rotatably connected to the top of the kettle body, the side wall of the moving rod is sleeved with a first spring, and the two ends of the first spring are respectively fixed to the fixed ring and the rotating ring.

[0007] Preferably, the connection mechanism comprises a plurality of key slots arranged in an array and opened on the side wall of the movable rod, and the lower end of the rotating rod is fixedly connected with a plurality of connecting keys arranged in an array, and the connecting keys are inserted in the key slots.

[0008] Preferably, the second driving mechanism includes a first solenoid valve fixedly connected to the top of the kettle body, and the upper end of the first solenoid valve is fixedly connected to an L-shaped tube, the upper end of the L-shaped tube is fixedly connected to a fixed cover, and a movable plate is connected to the fixed cover through a second reset mechanism, the movement of the movable plate is pushed by a second pushing mechanism, and the top of the fixed cover is fixedly connected to a second solenoid valve, the lower end of the first solenoid valve passes through the kettle body and is fixedly connected to a hose, and the lower end of the hose is fixed to the top of the annular cover, and the top of the kettle body is fixedly connected to an air release valve.

[0009] Preferably, the second reset mechanism includes two symmetrically arranged first connecting blocks fixedly connected to the side wall of the fixed cover, and the side wall of each first connecting block is fixedly connected to a T-shaped guide rod, the side wall of the T-shaped guide rod is sleeved with a second connecting block, the second connecting block is fixed to the side wall of the movable plate, and the side wall of each T-shaped guide rod is sleeved with a second spring.

[0010] Preferably, the first pushing mechanism includes a first L-shaped plate fixedly connected to the bottom of the movable plate, and the top of the first L-shaped plate is fixedly connected to a plurality of triangular blocks arranged in an array, the side wall of the fixed ring is fixedly connected to a pushing rod, and the pushing rod can slide on the side wall of the triangular block.

[0011] Preferably, the first driving mechanism is fixedly sleeved on a gear on the side wall of the rotating rod, and the top of the movable plate is fixedly connected to a second L-shaped plate, the other end of the second L-shaped plate is fixedly connected to a rack, and the rack is meshed with the gear.

[0012] Preferably, the second pushing mechanism includes a second support plate fixedly connected to the top of the fixed cover, and the top of the second support plate is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a rotating disk, and the side wall of the rotating disk is fixedly connected to a plurality of conical blocks arranged in an array.

[0013] Preferably, the lifting mechanism includes a connecting plate fixedly connected to the side wall of the moving rod, and the top of the connecting plate is fixedly connected to a support block, the side wall of the support block is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to a winding roller, the side wall of the winding roller is fixedly connected to a pull rope, and the lower end of the pull rope is fixed to the top of the moving disk.

[0014] Preferably, the stirring mechanism comprises a plurality of vertical plates arranged in an array and fixedly connected to the top of the movable plate, and a horizontal plate is fixedly connected to the top of each vertical plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The mixing kettle for generating para-benzoquinone by the aniline oxidation method is provided with a first driving mechanism and a first pushing mechanism, etc., so that the stirring rod can be reciprocated forward and reversed during mixing, and at the same time, the vertical plate and the horizontal plate are driven to move up and down reciprocatingly by the moving disk, so that the stirring and mixing efficiency is higher and the effect is better, and it is convenient to introduce air into the solution, which can improve the efficiency and effect of the reaction; after the reaction is completed, the kettle body can be vacuumed to avoid the escape of waste gas, which is more healthy and environmentally friendly, and it is convenient to recover excess manganese dioxide for subsequent continued use, which is more convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a partial cross-sectional structural schematic diagram of the kettle body in the present invention;

[0019] Figure 3 It is a schematic diagram of the position of the lifting mechanism in the present invention;

[0020] Figure 4 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 5 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0022] Figure 6 for Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0023] Figure 7 for Figure 4 Schematic diagram of the enlarged structure at D in the middle;

[0024] Figure 8 for Figure 5 Schematic diagram of the enlarged structure at E in the middle;

[0025] Fig. 9 for Figure 6 Schematic diagram of the enlarged structure at F in the middle.

[0026] In the figure: 1, mixing kettle body; 101, kettle body; 102, discharge valve; 103, feed valve; 2, first reset mechanism; 201, fixed ring; 202, rotating ring; 203, first spring; 3, connecting mechanism; 301, keyway; 302, connecting key; 4, second driving mechanism; 401, first solenoid valve; 402, L-shaped pipe; 403, fixed cover; 404, moving plate; 405, second solenoid valve; 406, hose; 407, air release valve; 5, second reset mechanism; 501, first connecting block; 502, T-shaped guide rod; 503, second connecting block; 504, second spring; 6, second pushing mechanism; 601, second support plate; 602, first Motor; 603, rotating disk; 604, conical block; 7, first driving mechanism; 701, gear; 702, second L-shaped plate; 703, rack; 8, stirring mechanism; 801, vertical plate; 802, horizontal plate; 9, first pushing mechanism; 901, pushing rod; 902, first L-shaped plate; 903, triangular block; 10, lifting mechanism; 1001, connecting plate; 1002, supporting block; 1003, second motor; 1004, winding roller; 1005, pulling rope; 11, moving rod; 12, stirring shaft; 13, first supporting plate; 14, stirring rod; 15, moving disk; 16, through hole; 19, annular cover; 20, air hole; 21, L-shaped frame; 22, rotating rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 9 The present invention provides a technical solution: a mixing kettle for generating p-benzoquinone by aniline oxidation method, comprising a kettle body 101 arranged on a mixing kettle body 1, a discharge valve 102 is arranged at the bottom of the kettle body 101, and a feed valve 103 is arranged at the top of the kettle body 101, a moving rod 11 is inserted at the top of the kettle body 101, and the moving rod 11 is connected to the top of the kettle body 101 through a first reset mechanism 2, a stirring shaft 12 is fixedly connected to the lower end of the moving rod 11, and a plurality of arrays are fixedly connected to the side wall of the stirring shaft 12 A first support plate 13 is provided, and the number of each group of first support plates 13 is two, and the opposite side walls of each group of first support plates 13 are fixedly connected with a stirring rod 14, and the side wall of the stirring rod 14 is sleeved with a moving plate 15, and the top of the moving plate 15 is provided with a plurality of through holes 16 arranged in an array, and the moving plate 15 is connected to the side wall of the moving rod 11 through a lifting mechanism 10, and the side wall of the moving plate 15 is fixedly sleeved with an annular cover 19, and the inner side wall of the annular cover 19 is provided with a plurality of air holes 20 arranged in an array, and the kettle body 1 An L-shaped frame 21 is fixedly connected to the top of 01, and a rotating rod 22 is rotatably connected to the bottom of the L-shaped frame 21. A connecting mechanism 3 is arranged between the rotating rod 22 and the moving rod 11. The movement of the moving rod 11 is driven by a first pushing mechanism 9, and a stirring mechanism 8 is arranged on the top of the moving disk 15. The rotation of the rotating rod 22 is driven by a first driving mechanism 7, and a second driving mechanism 4 for driving the air hole 20 for blowing and exhausting is arranged on the top of the kettle body 101. When mixing, the stirring rod 14 can be reciprocated forward and reversed. At the same time, the vertical plate 801 and the horizontal plate 802 are driven to reciprocate up and down by the moving disk 15, so that the stirring and mixing efficiency is higher and the effect is better, and it is convenient to introduce air into the solution, which can improve the efficiency and effect of the reaction; after the reaction is completed, the kettle body 101 can be vacuumed to avoid the escape of exhaust gas, which is healthier and more environmentally friendly, and it is convenient to recover excess manganese dioxide for subsequent continued use, which is more convenient and quick to use.

[0029] See also Figure 7The first reset mechanism 2 includes a fixed ring 201 fixedly sleeved on the side wall of the moving rod 11, and the side wall of the moving rod 11 is sleeved with a rotating ring 202, the rotating ring 202 is rotatably connected to the top of the kettle body 101, and the side wall of the moving rod 11 is sleeved with a first spring 203, and the two ends of the first spring 203 are respectively fixed to the fixed ring 201 and the rotating ring 202, which guides and resets the movement of the moving rod 11.

[0030] See also Figure 7 The connecting mechanism 3 includes a plurality of key slots 301 arranged in an array on the side wall of the moving rod 11. The lower end of the rotating rod 22 is fixedly connected with a plurality of connecting keys 302 arranged in an array, and the connecting key 302 is inserted in the key slot 301. When the moving rod 11 moves up and down, the connecting key 302 slides in the key slot 301 to ensure that when the rotating rod 22 rotates, it can always drive the moving rod 11 to rotate.

[0031] See also Figure 5 and Figure 8The second driving mechanism 4 includes a first electromagnetic valve 401 fixedly connected to the top of the kettle body 101, and the upper end of the first electromagnetic valve 401 is fixedly connected to an L-shaped tube 402, the upper end of the L-shaped tube 402 is fixedly connected to a fixed cover 403, and a movable plate 404 is connected to the fixed cover 403 through a second reset mechanism 5, the movement of the movable plate 404 is pushed by a second pushing mechanism 6, and the top of the fixed cover 403 is fixedly connected to a second electromagnetic valve 405, the lower end of the first electromagnetic valve 401 penetrates into the kettle body 101 and is fixedly connected to a hose 406, and the lower end of the hose 406 is fixed to the top of the annular cover 19, and the top of the kettle body 101 The movable plate 404 is fixedly connected with the air release valve 407, and the second pushing mechanism 6 and the second reset mechanism 5 make the movable plate 404 reciprocate in the fixed cover 403. When the reaction is carried out, when the movable plate 404 moves in the direction away from the fixed cover 403, negative pressure is generated in the fixed cover 403. At the same time, the second solenoid valve 405 is opened and the first solenoid valve 401 is closed. At this time, the external air enters the fixed cover 403 through the second solenoid valve 405 and is temporarily stored. When the movable plate 404 moves into the fixed cover 403, the air temporarily stored in the fixed cover 403 can be squeezed. At the same time, the second solenoid valve 405 is closed and the first solenoid valve 401 is closed. Open, at this time, the air in the fixed cover 403 is squeezed and enters the annular cover 19 through the L-shaped tube 402, the first solenoid valve 401 and the hose 406, and enters the solution through the air hole 20, and the through hole 16 and the annular cover 19 can move up and down with the stirring shaft 12, so as to facilitate the introduction of air into the solution, which can improve the efficiency and effect of the reaction. After the reaction is completed, the moving plate 15 and the annular cover 19 are driven by the lifting mechanism 10 to move upward and move out of the liquid surface. Then, when the moving plate 404 moves away from the fixed cover 403, negative pressure is generated in the fixed cover 403, and at the same time, the first solenoid valve 401 is opened. Open, the second solenoid valve 405 is closed. At this time, the air in the kettle body 101 is sucked into the annular cover 19 through the air hole 20, and enters the fixed cover 403 through the hose 406, the first solenoid valve 401 and the L-shaped tube 402. When the movable plate 404 moves toward the fixed cover 403, the gas in the fixed cover 403 can be squeezed. At the same time, the first solenoid valve 401 is closed and the second solenoid valve 405 is opened. At this time, the gas in the fixed cover 403 is squeezed out through the second solenoid valve 405 and then processed uniformly. This reciprocating operation can be performed to vacuum the kettle body 101 to avoid the escape of exhaust gas, which is healthier and more environmentally friendly.

[0032] See also Figure 8The second reset mechanism 5 includes two symmetrically arranged first connecting blocks 501 fixedly connected to the side wall of the fixed cover 403, and the side wall of each first connecting block 501 is fixedly connected with a T-shaped guide rod 502, the side wall of the T-shaped guide rod 502 is sleeved with a second connecting block 503, the second connecting block 503 is fixed to the side wall of the movable plate 404, and the side wall of each T-shaped guide rod 502 is sleeved with a second spring 504, which guides and resets the movement of the movable plate 404.

[0033] See also Figure 4 , Figure 7 and Figure 8 The first pushing mechanism 9 includes a first L-shaped plate 902 fixedly connected to the bottom of the moving plate 404, and a plurality of triangular blocks 903 arranged in an array are fixedly connected to the top of the first L-shaped plate 902. The side wall of the fixed ring 201 is fixedly connected to a pushing rod 901, and the pushing rod 901 can slide on the side wall of the triangular block 903. When the moving plate 404 reciprocates, the triangular block 903 is driven to reciprocate through the first L-shaped plate 902. When the triangular block 903 abuts against the side wall of the pushing rod 901, the moving rod 11 is pushed to move upward. At the same time, the first spring 203 is stretched. When the triangular block 903 passes over the side wall of the push rod 901, the moving rod 11 can move downward and reset under the action of the first spring 203, and so on, so that the moving rod 11 and the stirring shaft 12 can move back and forth up and down, and the moving plate 15 and the annular cover 19 can be driven to move back and forth up and down through the lifting mechanism 10, thereby driving the vertical plate 801 and the horizontal plate 802 to move back and forth up and down, so that the stirring and mixing efficiency is higher and the effect is better, thereby improving the efficiency and effect of the reaction.

[0034] See also Figure 5 and Figure 7 The first driving mechanism 7 is fixedly mounted on the gear 701 on the side wall of the rotating rod 22, and the top of the movable plate 404 is fixedly connected to the second L-shaped plate 702, and the other end of the second L-shaped plate 702 is fixedly connected to the rack 703, and the rack 703 is meshed with the gear 701. When the movable plate 404 moves back and forth, the rack 703 is driven to move back and forth through the second L-shaped plate 702, thereby pushing the gear 701 and the rotating rod 22 to reciprocate forward and reverse, and drives the movable rod 11 and the stirring shaft 12 to reciprocate forward and reverse through the connecting mechanism 3, and then drives the stirring rod 14 to reciprocate forward and reverse through the first support plate 13.

[0035] See also Figure 8The second pushing mechanism 6 includes a second supporting plate 601 fixedly connected to the top of the fixed cover 403, and the top of the second supporting plate 601 is fixedly connected to the first motor 602, the output end of the first motor 602 is fixedly connected to the rotating disk 603, and the side wall of the rotating disk 603 is fixedly connected to a plurality of conical blocks 604 arranged in an array. The first motor 602 is started, and the rotation of the first motor 602 drives the rotation of the rotating disk 603. When the conical block 604 abuts against the side wall of the movable plate 404, the movable plate 404 is pushed to move into the fixed cover 403.

[0036] See also Figure 6 and Fig. 9 The lifting mechanism 10 includes a connecting plate 1001 fixedly connected to the side wall of the moving rod 11, and a supporting block 1002 is fixedly connected to the top of the connecting plate 1001, and a second motor 1003 is fixedly connected to the side wall of the supporting block 1002, and an output end of the second motor 1003 is fixedly connected to a winding roller 1004, and a pull rope 1005 is fixedly connected to the side wall of the winding roller 1004, and the lower end of the pull rope 1005 is fixed to the top of the moving disk 15. After the reaction is completed, the second motor 1003 is started for forward rotation, and the rotation of the second motor 1003 drives the rotation of the winding roller 1004 to reel in the pull rope 1005, thereby pulling the moving disk 15 and the annular cover 19 upward and out of the liquid surface, so as to facilitate the recovery of excess manganese dioxide for subsequent continued use, which is more convenient and quick to use.

[0037] See also Figure 1 The stirring mechanism 8 includes a plurality of vertical plates 801 arranged in an array and fixedly connected to the top of the movable disk 15, and a horizontal plate 802 is fixedly connected to the top of each vertical plate 801. When the movable rod 11 and the stirring shaft 12 move back and forth up and down, the movable disk 15 and the annular cover 19 are driven to move back and forth up and down by the lifting mechanism 10, thereby driving the vertical plates 801 and the horizontal plates 802 to move back and forth up and down, thereby making the stirring and mixing efficiency higher and the effect better, thereby improving the efficiency and effect of the reaction.

[0038] Working principle: When in use, when performing a mixing reaction, first start the second motor 1003 to reverse, at this time, the movable plate 15 and the annular cover 19 can move downward along the side wall of the stirring rod 14 under the action of gravity and move to the bottom of the kettle body 101, then, feed aniline, sulfuric acid and manganese dioxide and other raw materials into the kettle body 101 through the feed valve 103, then, start the first motor 602, the rotation of the first motor 602 drives the rotation of the rotating plate 603, when the conical block 604 abuts against the side wall of the movable plate 404, the movable plate 404 is pushed to move into the fixed cover 403, and at the same time, the second The spring 504 is compressed. When the conical block 604 passes over the side wall of the movable plate 404, the movable plate 404 can be moved and reset under the action of the second spring 504. In this way, the movable plate 404 can reciprocate in the fixed cover 403. When the movable plate 404 reciprocates, the rack 703 is driven to reciprocate through the second L-shaped plate 702, thereby pushing the gear 701 and the rotating rod 22 to reciprocate forward and reverse, and driving the movable rod 11 and the stirring shaft 12 to reciprocate forward and reverse through the connecting mechanism 3, and then driving the stirring rod 14 to reciprocate forward and reverse through the first support plate 13;

[0039] When the moving plate 404 reciprocates, the triangular block 903 is driven to reciprocate through the first L-shaped plate 902. When the triangular block 903 abuts against the side wall of the push rod 901, the moving rod 11 is pushed to move upward. At the same time, the first spring 203 is stretched. When the triangular block 903 passes over the side wall of the push rod 901, the moving rod 11 can move downward and reset under the action of the first spring 203. In this way, the moving rod 11 and the stirring shaft 12 can reciprocate up and down, and the moving plate 15 and the annular cover 19 can be driven to reciprocate up and down through the lifting mechanism 10, thereby driving the vertical plate 801 and the horizontal plate 802 to reciprocate up and down, so that the stirring and mixing efficiency is higher and the effect is better, thereby improving the efficiency and effect of the reaction;

[0040] At the same time, during the reaction, when the movable plate 404 moves in the direction away from the fixed cover 403, negative pressure is generated in the fixed cover 403, and at the same time, the second electromagnetic valve 405 is opened and the first electromagnetic valve 401 is closed. At this time, the external air enters the fixed cover 403 through the second electromagnetic valve 405 for temporary storage. When the movable plate 404 moves into the fixed cover 403, the air temporarily stored in the fixed cover 403 can be squeezed. At the same time, the second electromagnetic valve 405 is closed and the first electromagnetic valve 401 is opened. At this time, the air in the fixed cover 403 is squeezed and enters the annular cover 19 through the L-shaped tube 402, the first electromagnetic valve 401 and the hose 406, and enters the solution through the air hole 20. In addition, the through hole 16 and the annular cover 19 can reciprocate up and down with the stirring shaft 12, so as to facilitate the introduction of air into the solution, which can improve the efficiency and effect of the reaction.

[0041] After the reaction is completed, the moving plate 15 and the annular cover 19 are driven by the lifting mechanism 10 to move upward and move out of the liquid surface. Then, when the moving plate 404 moves in the direction away from the fixed cover 403, negative pressure is generated in the fixed cover 403. At the same time, the first solenoid valve 401 is opened and the second solenoid valve 405 is closed. At this time, the air in the kettle body 101 is sucked into the annular cover 19 through the air hole 20, and enters the fixed cover 403 through the hose 406, the first solenoid valve 401 and the L-shaped tube 402. When the moving plate 404 moves into the fixed cover 403, the gas in the fixed cover 403 can be squeezed. At the same time, the first solenoid valve 401 is closed and the second solenoid valve 405 is opened. At this time, the gas in the fixed cover 403 is squeezed out through the second solenoid valve 405 and then processed uniformly. In this way, the kettle body 101 can be vacuumed to avoid the escape of exhaust gas, which is more healthy and environmentally friendly.

[0042] During the reaction, when the movable disk 15 is at the bottom of the kettle body 101, the manganese dioxide will fall on the top of the movable disk 15. At the same time, the movable disk 15 and the annular cover 19 can move back and forth up and down with the stirring shaft 12, which can form a shaking effect to prevent the manganese dioxide from accumulating on the movable disk 15 and lift it up to ensure the efficiency and effect of the reaction. After the reaction is completed, the second motor 1003 is started to rotate forward. The rotation of the second motor 1003 drives the winding roller 1004 to rotate, and the pull rope 1005 is wound up, thereby pulling the movable disk 15 and the annular cover 19 upward and out of the liquid surface, thereby facilitating the recovery of excess manganese dioxide for subsequent continued use, which is more convenient and quick to use.

Claims

1. A mixing kettle for producing p-benzoquinone by aniline oxidation method, comprising a kettle body (101) arranged on a mixing kettle body (1), a discharge valve (102) being arranged at the bottom of the kettle body (101), and a feed valve (103) being arranged at the top of the kettle body (101), characterized in that: A moving rod (11) is inserted into the top of the kettle body (101), and the moving rod (11) is connected to the top of the kettle body (101) via a first reset mechanism (2); a stirring shaft (12) is fixedly connected to the lower end of the moving rod (11), and a plurality of groups of first support plates (13) arranged in an array are fixedly connected to the side wall of the stirring shaft (12), and the number of each group of first support plates (13) is two; a stirring rod (14) is fixedly connected to the opposite side wall of each group of first support plates (13), and a moving disk (15) is sleeved on the side wall of the stirring rod (14); a plurality of through holes (16) arranged in an array are opened on the top of the moving disk (15), and the moving disk (15) is connected to the side wall of the moving rod (11) via a lifting mechanism (10); The side wall of the moving plate (15) is fixedly sleeved with an annular cover (19), and the inner side wall of the annular cover (19) is provided with a plurality of air holes (20) arranged in an array; the top of the kettle body (101) is fixedly connected to an L-shaped frame (21), and the bottom of the L-shaped frame (21) is rotatably connected to a rotating rod (22); a connecting mechanism (3) is provided between the rotating rod (22) and the moving rod (11); the movement of the moving rod (11) is driven by a first driving mechanism (9); a stirring mechanism (8) is provided on the top of the moving plate (15); the rotation of the rotating rod (22) is driven by a first driving mechanism (7); and a second driving mechanism (4) for driving the air holes (20) to blow and extract air is provided on the top of the kettle body (101); The first reset mechanism (2) comprises a fixed ring (201) fixedly sleeved on the side wall of the moving rod (11), and the side wall of the moving rod (11) is sleeved with a rotating ring (202), and the rotating ring (202) is rotatably connected to the top of the kettle body (101), and the side wall of the moving rod (11) is sleeved with a first spring (203), and the two ends of the first spring (203) are respectively fixed to the fixed ring (201) and the rotating ring (202), the connecting mechanism (3) comprises a plurality of key slots (301) arranged in an array and opened on the side wall of the moving rod (11), the lower end of the rotating rod (22) is fixedly connected with a plurality of connecting keys (302) arranged in an array, and the connecting keys (302) are inserted into the key slots (301), and the second drive The driving mechanism (4) comprises a first electromagnetic valve (401) fixedly connected to the top of the kettle body (101), and the upper end of the first electromagnetic valve (401) is fixedly connected to an L-shaped tube (402), the upper end of the L-shaped tube (402) is fixedly connected to a fixed cover (403), and a movable plate (404) is connected inside the fixed cover (403) via a second reset mechanism (5), the movement of the movable plate (404) is driven by a second driving mechanism (6), and the top of the fixed cover (403) is fixedly connected to a second electromagnetic valve (405), the lower end of the first electromagnetic valve (401) penetrates into the kettle body (101) and is fixedly connected to a hose (406), and the lower end of the hose (406) is fixed to the top of the annular cover (19), and the The top of the kettle body (101) is fixedly connected to a gas relief valve (407); the second reset mechanism (5) comprises two symmetrically arranged first connection blocks (501) fixedly connected to the side wall of the fixed cover (403); the side wall of each first connection block (501) is fixedly connected to a T-shaped guide rod (502); the side wall of the T-shaped guide rod (502) is sleeved with a second connection block (503); the second connection block (503) is fixed to the side wall of the movable plate (404); the side wall of each T-shaped guide rod (502) is sleeved with a second spring (504); the first pushing mechanism (9) comprises a first L-shaped plate (902) fixedly connected to the bottom of the movable plate (404); the top of the first L-shaped plate (902) is fixedly connected to a plurality of The triangular blocks (903) are arranged in an array, the side wall of the fixed ring (201) is fixedly connected to a push rod (901), and the push rod (901) slides on the side wall of the triangular block (903), the first driving mechanism (7) is fixedly sleeved on the side wall of the rotating rod (22), and the top of the movable plate (404) is fixedly connected to a second L-shaped plate (702), the other end of the second L-shaped plate (702) is fixedly connected to a rack (703), and the rack (703) is meshed with the gear (701), the second pushing mechanism (6) includes a second support plate (601) fixedly connected to the top of the fixed cover (403), and the top of the second support plate (601) is fixedly connected to the first motor (602),The output end of the first motor (602) is fixedly connected to a rotating disk (603), and the side wall of the rotating disk (603) is fixedly connected to a plurality of conical blocks (604) arranged in an array, the lifting mechanism (10) comprises a connecting plate (1001) fixedly connected to the side wall of the moving rod (11), and the top of the connecting plate (1001) is fixedly connected to a supporting block (1002), the side wall of the supporting block (1002) is fixedly connected to a second motor (1003), and the output end of the second motor (1003) is fixedly connected to a winding roller (1004), the side wall of the winding roller (1004) is fixedly connected to a pull rope (1005), and the lower end of the pull rope (1005) is fixed to the top of the moving disk (15).

2. The mixed kettle for producing p-benzoquinone by aniline oxidation method according to claim 1, characterized in that: The stirring mechanism (8) comprises a plurality of vertical plates (801) arranged in an array and fixedly connected to the top of the movable plate (15), and a horizontal plate (802) is fixedly connected to the top of each vertical plate (801).

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