Stirring system of mixed acid reaction kettle

Abstract

The utility model relates to the technical field of nitration reaction equipment, and particularly discloses a stirring system of a mixed acid reaction kettle, which comprises a reaction kettle body and a kettle cover, a stirring shaft is arranged in the reaction kettle body, a solid feeding pipeline is arranged in the kettle cover, the stirring shaft is in transmission connection with a power shaft through a driving component, and the power shaft is connected with a rotating piece. The movable cylinder has two working states including a communication state and a separation state. When the moving cylinder is in a communication state, the square groove is aligned with the square rod, the acid mist discharging hole in the sealing cavity is communicated with the cavity in the reaction kettle body, at the moment, the rotating piece can drive the driving piece to rotate together through the square rod and the square groove when rotating, and the driving piece can drive the acid mist discharging blade to rotate when rotating, so that acid mist at the upper part of the inner side of the reaction kettle body is blown away; therefore, when entering, the solid material cannot be humidified before being in contact with the liquid raw material, and the condition that the reaction time is prolonged due to the humidification of the solid material can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to nitration reaction equipment technical field, concretely relates to a kind of mixing acid reaction kettle's stirring system. BACKGROUND

[0002] Mixing acid reaction kettle is a kind of equipment specially used for nitration, especially suitable for the equipment for processing nitro-sulfur mixed acid intermittent nitration, and the stirring system arranged in the reaction kettle is used to stir the material entering therein, so that solid material and liquid material are fully mixed.

[0003] During the reaction of the material in the reaction kettle, heat will be generated, which will accelerate the evaporation speed of the liquid raw material in the reaction kettle. The evaporated liquid raw material will form an acid mist on the top inside the reaction kettle. When solid material is added, the solid material will mix with the acid mist during the process of entering the reaction kettle, causing part of the solid material to become damp. The dampened solid raw material is not easy to stir after mixing with the liquid raw material, causing the reaction time of this part of the solid material to be longer, which affects the processing speed. Therefore, the present application proposes a stirring system for mixing acid reaction kettle. SUMMARY

[0004] The utility model aims at providing a kind of mixing acid reaction kettle's stirring system to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme, a kind of mixing acid reaction kettle's stirring system, including reaction kettle body, kettle cover, reaction kettle body is internally provided with stirring shaft, the kettle cover is internally provided with solid feeding pipe, stirring shaft is connected power shaft by drive assembly transmission, the power shaft is connected rotating member;

[0006] The rotating member includes a groove, a round bar and a square bar are arranged in the groove, the rotating member is connected to a driving element, and the driving element includes a square groove and a round groove.

[0007] The driving element is connected to a moving cylinder, the moving cylinder is connected to an extension rod, and the extension rod allows the moving cylinder to have at least two working states, including communication state and separation state.

[0008] When the moving cylinder is in communication state, the square groove is aligned with the square bar, and the acid mist discharge hole in the sealing cavity is in communication with the cavity of the reaction kettle body. When the moving cylinder is in separation state, the square groove is aligned with the round bar, and the square bar is received in the round groove.

[0009] The driving element is provided with an acid mist discharge blade.

[0010] Preferably, the stirring shaft penetrates the kettle cover, and the bottom of the stirring shaft is welded with helically distributed stirring blades. The end of the stirring shaft is inserted into the base, and the base is detachably connected with the inner wall of the reaction kettle body.

[0011] Preferably, the driving assembly comprises a first bevel gear and a second bevel gear, and the first bevel gear and the second bevel gear are connected through tooth engagement.

[0012] Preferably, the first bevel gear is sleeved on the stirring shaft, and the second bevel gear is sleeved outside the power shaft.

[0013] Preferably, the power shaft is arranged on the support base, the support base is fixedly installed in the outer cylinder which penetrates the outer wall of the reaction kettle body and is fixedly connected with the reaction kettle body.

[0014] Preferably, the rotating member is inserted into one of the support bases.

[0015] Preferably, the diameter of the circular groove is greater than the size between two diagonal edges of the square rod, and the length of the square groove is greater than the diameter of the circular rod.

[0016] Preferably, the moving cylinder is connected with the piston plate which is slidingly installed in the sealing cavity.

[0017] Preferably, the sealing gasket is arranged on the side of the piston plate which is attached to the inner wall of the sealing cavity, and the length of the sealing gasket is greater than the size of the acid mist discharging hole.

[0018] Preferably, the liquid suction pipeline is inserted into the inner bottom of the reaction kettle body, the liquid suction pipeline is connected with the power pump, the power pump is connected with the backflow pipe, the liquid discharging opening of the backflow pipe is arranged to be inclined to the downside, and the liquid discharging opening of the backflow pipe is aligned with the stirring blade.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] Firstly, the moving cylinder has two working states, i.e. the communication state and the separation state. When the moving cylinder is in the communication state, the square groove is aligned with the square rod, the acid mist discharging hole in the sealing cavity is communicated with the cavity in the reaction kettle body, the rotating member can drive the driving member to rotate through the square rod and the square groove when the rotating member rotates, the acid mist discharging blade can be driven to rotate when the driving member rotates, and thus the acid mist in the upper part of the reaction kettle body can be blown away. Therefore, the solid material will not be humidified before being contacted with the liquid raw material, and the situation that the reaction time is prolonged due to the humidification of the solid material can be avoided.

[0021] Secondly, when the moving cylinder is in the separation state, the square groove is aligned with the circular rod, the square rod is received into the circular groove, the rotating member will not drive the driving member to rotate when the rotating member rotates, the acid mist discharging hole is blocked by the piston plate, and the rotating member is in the state of no load, so that the energy consumption can be greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the stirring system of the mixed acid reaction kettle in the utility model.

[0023] Figure 2 It is the internal structure schematic view of the stirring system of the mixed acid reaction kettle in the utility model.

[0024] Figure 3 It is the internal structure schematic view of the stirring system of the mixed acid reaction kettle in the utility model. Figure 2 It is the structure schematic view of the A place in the utility model.

[0025] Figure 4 It is the internal structure schematic view of the stirring system of the mixed acid reaction kettle in the utility model. Figure 2 It is the structure schematic view of the B place in the utility model.

[0026] In the figure: 1, reaction kettle body; 2, kettle cover; 201, solid feeding pipeline; 3, stirring shaft; 4, stirring blade; 5, base; 6, first bevel gear; 7, second bevel gear; 8, power shaft; 9, support seat; 10, rotating part; 1001, groove; 1002, round bar; 1003, square bar; 11, driving part; 1101, square groove; 1102, round groove; 12, acid mist discharging blade; 13, moving cylinder; 14, piston plate; 15, telescopic rod; 16, sealing cavity; 17, acid mist discharging hole; 18, liquid suction pipeline; 19, power pump; 20, return pipe. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] With reference to Figures 1-4 A kind of stirring system of mixed acid reaction kettle, including reaction kettle body 1, kettle cover 2, reaction kettle body 1 inside is provided with stirring shaft 3, stirring shaft 3 is connected for driving motor for driving stirring shaft 3 rotation, specifically, stirring shaft 3 penetrates kettle cover 2, and the bottom of stirring shaft 3 is welded with spiral distribution stirring blade 4, stirring shaft 3 end is inserted into base 5, base 5 is detachably connected with the inner wall of reaction kettle body 1, kettle cover 2 is provided with solid feeding pipeline 201.

[0029] Mixed acid reaction kettle is a kind of equipment specially used for nitration, especially suitable for processing nitric-sulfur mixed acid intermittent nitration equipment, stirring shaft 3 arranged in the inside of reaction kettle body 1 is used to agitate the material entering therein, so that solid material and liquid material are fully mixed.

[0030] The material inside the reaction kettle body 1 generates heat during the reaction, which accelerates the evaporation speed of the liquid raw material in the reaction kettle body 1. The evaporated liquid raw material forms an acid mist on the top inside the reaction kettle body 1. When solid material is added from the solid feeding pipe 201 into the reaction kettle body 1, the solid material will mix with the acid mist, causing part of the solid material to become damp. The damp solid raw material takes longer to react with the liquid raw material, greatly prolonging the reaction time of the solid raw material. In order to solve this problem, a driving assembly is arranged inside the reaction kettle body 1, and the stirring shaft 3 is drivingly connected to the power shaft 8 through the driving assembly.

[0031] The driving assembly includes a first bevel gear 6 and a second bevel gear 7. The first bevel gear 6 is drivingly connected to the second bevel gear 7 through tooth engagement. The first bevel gear 6 is sleeved on the stirring shaft 3, and the second bevel gear 7 is sleeved on the outside of the power shaft 8. The power shaft 8 is driven to rotate by the driving assembly.

[0032] It should be noted that, in order to ensure the stability of the power shaft 8, the power shaft 8 is arranged on the support seat 9. The support seat 9 is fixedly installed in the outer cylinder, which penetrates the outer wall of the reaction kettle body 1 and is fixedly connected with the reaction kettle body 1.

[0033] During the reaction of the material inside the reaction kettle body 1, acid mist is continuously generated. In order to completely remove the acid mist, the acid mist exhaust blade 12 needs to be always in an open state. However, in actual use, only when solid material is added into the reaction kettle body 1, the acid mist on the top inside the reaction kettle body 1 is exhausted. Therefore, the power shaft 8 needs to be idle during non-working process to reduce energy loss. Therefore, the power shaft 8 is connected with the rotating piece 10, and the rotating piece 10 is inserted into one of the support seats 9.

[0034] Specifically, the rotating piece 10 includes a groove 1001, and a circular rod 1002 is arranged in the groove 1001. The side of the circular rod 1002 away from the rotating piece 10 is connected with a square rod 1003, and the rotating piece 10 is inserted with the driving piece 11.

[0035] More specifically, the driving piece 11 includes a square groove 1101 and a circular groove 1102. The square groove 1101 cooperates with the square rod 1003, and the diameter of the circular groove 1102 is greater than the size between two opposite sides of the square rod 1003. The length of the square groove 1101 is greater than the diameter of the circular rod 1002.

[0036] It should be noted that the driving piece 11 is connected with the moving cylinder 13, the moving cylinder 13 is connected with the piston plate 14, the piston plate 14 is slidingly installed in the sealing cavity 16, and the moving cylinder 13 is connected with the telescopic rod 15. The telescopic rod 15 is used to drive the moving cylinder 13 to move, so that the moving cylinder 13 has at least two working states including a communication state and a separation state.

[0037] Specifically, when the moving cylinder 13 is in the communication state, the square groove 1101 is aligned with the square rod 1003, and the acid mist discharge hole 17 inside the sealing cavity 16 is in communication with the cavity inside the reaction kettle body 1; when the moving cylinder 13 is in the separation state, the square groove 1101 is aligned with the round rod 1002, and the square rod 1003 is received in the round groove 1102, at this time, the rotation of the rotating piece 10 will not drive the driving piece 11 to rotate, and the acid mist discharge hole 17 is blocked by the piston plate 14. In order to enable the piston plate 14 to block the acid mist discharge hole 17, the length of the piston plate 14 needs to be greater than the size of the acid mist discharge hole 17. Specifically, the side of the piston plate 14 that is attached to the inner wall of the sealing cavity 16 is provided with a sealing gasket, and the length of the sealing gasket is greater than the size of the acid mist discharge hole 17.

[0038] During the rotation of the driving piece 11, the acid mist accumulated on the top inside of the reaction kettle body 1 needs to be discharged, so the driving piece 11 is provided with the acid mist discharge blade 12.

[0039] The solid material enters the inside of the reaction kettle body 1 from the solid feeding pipe 201 on the kettle cover 2, and part of the solid material will fall on the stirring blade 4 during the adding process. In order to avoid the material remaining on the stirring blade 4, causing the raw materials to be unable to be completely mixed, the liquid suction pipe 18 is inserted into the inside bottom of the reaction kettle body 1, the liquid suction pipe 18 is connected with the power pump 19, the power pump 19 is connected with the return pipe 20, the liquid outlet of the return pipe 20 is inclined downward, and the liquid outlet of the return pipe 20 is aligned with the stirring blade 4.

[0040] The liquid material on the inside bottom of the reaction kettle body 1 is sucked into the upper area inside the reaction kettle body 1 by the power pump 19, and the liquid material is discharged from the return pipe 20. When the liquid material is discharged, the liquid is aligned with the stirring blade 4, and the solid material falling on the stirring blade 4 is washed down.

[0041] Working principle:

[0042] The moving cylinder 13 has at least two working states including the communication state and the separation state.

[0043] When the moving cylinder 13 is in the communication state, the square groove 1101 is aligned with the square rod 1003, and the acid mist discharge hole 17 inside the sealing cavity 16 is in communication with the cavity inside the reaction kettle body 1. At this time, when the rotating piece 10 rotates, the square rod 1003 and the square groove 1101 can drive the driving piece 11 to rotate together, and when the driving piece 11 rotates, the acid mist discharge blade 12 can be driven to rotate, so as to blow away the acid mist on the upper inside of the reaction kettle body 1. The acid mist is discharged at the acid mist discharge hole 17, and a corresponding pipe is installed at the acid mist discharge hole 17. The pipe is connected with an acid mist treatment unit for treating the acid mist.

[0044] When the mobile cylinder 13 is in the separated state, the square groove 1101 is aligned with the round rod 1002, the square rod 1003 is received into the round groove 1102, at this time, the rotation of the rotating part 10 does not drive the driving part 11 to rotate, the acid mist discharging hole 17 is blocked by the piston plate 14, the rotating part 10 is in the unloaded state, and the energy consumption can be greatly reduced.

[0045] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mixing system of a mixed acid reaction kettle, comprising a kettle body (1) and a kettle cover (2), a stirring shaft (3) is arranged in the kettle body (1), characterized in that, The kettle cover (2) is provided with a solid feeding pipe (201), the stirring shaft (3) is connected with a power shaft (8) through a driving assembly, and the power shaft (8) is connected with a rotating part (10); The rotating part (10) comprises a groove (1001), the groove (1001) is provided with a round rod (1002) and a square rod (1003), the rotating part (10) is connected with a driving part (11), and the driving part (11) comprises a square groove (1101) and a round groove (1102). The driving part (11) is connected with a moving cylinder (13), the moving cylinder (13) is connected with a telescopic rod (15), and the telescopic rod (15) enables the moving cylinder (13) to have at least two working states including a communication state and a separation state. When the moving cylinder (13) is in the communication state, the square groove (1101) is aligned with the square rod (1003), and the acid mist discharging hole (17) in the sealing cavity (16) is in communication with the cavity of the reaction kettle body (1); when the moving cylinder (13) is in the separation state, the square groove (1101) is aligned with the round rod (1002), and the square rod (1003) is received in the round groove (1102). The driving part (11) is provided with an acid mist discharging blade (12).

2. A mixing system for a mixed acid reactor according to claim 1, wherein The stirring shaft (3) penetrates the kettle cover (2), the bottom of the stirring shaft (3) is welded with spiral stirring blades (4), the end of the stirring shaft (3) is inserted into a base (5), and the base (5) is detachably connected with the inner wall of the reaction kettle body (1).

3. A mixing system for a mixed acid reactor according to claim 1, wherein The driving assembly comprises a first bevel gear (6) and a second bevel gear (7), and the first bevel gear (6) and the second bevel gear (7) are connected through gear meshing transmission.

4. A mixing system for a mixed acid reactor according to claim 3, wherein The first bevel gear (6) is sleeved on the stirring shaft (3), and the second bevel gear (7) is sleeved on the outside of the power shaft (8).

5. The mixing system of claim 1, wherein, The power shaft (8) is arranged on a support base (9), the support base (9) is fixedly installed in an outer cylinder, the outer cylinder penetrates the outer wall of the reaction kettle body (1), and the outer cylinder is fixedly connected with the reaction kettle body (1).

6. A mixing system for a mixed acid reactor according to claim 1, wherein The rotating part (10) is inserted into one of the support bases (9).

7. A mixing system for a mixed acid reactor according to claim 1, wherein The diameter of the round groove (1102) is greater than the size between two diagonal edges of the square rod (1003), and the length of the square groove (1101) is greater than the diameter of the round rod (1002).

8. A mixing system for a mixed acid reactor according to claim 1, wherein The moving cylinder (13) is connected with a piston plate (14), and the piston plate (14) is slidingly installed in the sealing cavity (16).

9. A mixing system for a mixed acid reactor according to claim 8, wherein The sealing gasket is arranged on the surface of the piston plate (14) which is attached to the inner wall of the sealing cavity (16), and the length of the sealing gasket is greater than the size of the acid mist discharging hole (17).

10. The mixing system of claim 1, wherein, The inner bottom of the reaction kettle body (1) is inserted with a liquid suction pipe (18), the liquid suction pipe (18) is connected with a power pump (19), the power pump (19) is connected with a return pipe (20), the liquid outlet of the return pipe (20) is inclined downward, and the liquid outlet of the return pipe (20) is aligned with the stirring blades (4).

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