Dinitrotoluene production device with mixing tank provided with jet mixer

Abstract

The invention discloses a dinitrotoluene production device with a mixing tank provided with a jet mixer, and relates to the technical field of dinitrotoluene production and processing, the dinitrotoluene production device comprises an inclined push plate, the inclined push plate is used for fully mixing mononitrotoluene and mixed acid liquor in a mixing round shell in a stirring manner, and the jet mixer is used for mixing the mononitrotoluene and the mixed acid liquor in the mixing round shell; according to the dinitrotoluene production device with the mixing tank provided with the jet mixer, the mixing round shell with a small volume and the inclined push plate are arranged to carry out large-area full stirring type mixing on mononitrotoluene and mixed acid liquor; the problem that due to the fact that the internal space of a common mixing tank is large, just-added mononitrotoluene liquid often floats on the top of mixed acid liquid and is difficult to be quickly blended into the lower portion, and the mixing effect is poor is solved; the mixed acid liquid at the bottom of the inner wall of a mixing round shell is shoveled up through the inclined face of an inclined push plate; a part of mixed acid liquid is prevented from being always accumulated at the bottom of the inner wall of the mixed round shell and is difficult to fully contact and react with the mononitrotoluene.

Description

Technical Field

[0001] The invention relates to the technical field of dinitrotoluene production and processing, and in particular to a dinitrotoluene production device in which a mixing tank is provided with a jet mixer. Background Art

[0002] In industrial production, toluene diisocyanate (TDI) is usually produced by the phosgene method, and dinitrotoluene is its important raw material. Dinitrotoluene is a major basic chemical, widely used in the synthesis and manufacturing process of medicines, coatings, dyes, rubber and other organic chemical products. The main production process of dinitrotoluene today is the two-stage nitration method. The specific process is to use toluene as the raw material, react in a nitric and sulfuric acid mixed acid, and nitrate toluene in two steps to form dinitrotoluene. The first step is to nitrate toluene to form mononitrotoluene; the second step is to nitrate mononitrotoluene to form dinitrotoluene. The two-stage nitration process is to prepare a mixed acid according to a specified ratio, and then add the mononitrotoluene prepared by the first nitration into the mixed acid solution for a period of time to react to form dinitrotoluene. During the second-stage nitration process, mononitrotoluene needs to be added to the prepared mixed acid solution. However, the commonly used mixing tank has a large internal space, so the newly added mononitrotoluene liquid often floats on the top of the mixed acid solution and is difficult to quickly blend into the bottom, resulting in poor mixing effect. Therefore, we proposed a dinitrotoluene production device with a mixing tank equipped with a jet mixer. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a dinitrotoluene production device in which a mixing tank is provided with a jet mixer, comprising: A mixing tank body, wherein the inner wall of the mixing tank body is provided with a material storage shell; A T-shaped round rod, which is used for inserting and plugging the empty shell of the storage material; A square partition, which is used to separate the interior of the empty storage shell into two areas; A mixing mechanism, which is used to fully stir and mix the mononitrotoluene and the mixed acid solution, and a self-priming pump 1 is arranged on the top of the mixing mechanism; A discharge mechanism, which is used to discharge the mixed dinitrotoluene from the mixing mechanism; An ejection mechanism, which is used to eject the dinitrotoluene discharged by the discharge mechanism onto the bottom of the inner wall of the mixing tank in a jet-like manner; The bottom of the mixing tank body is fixedly connected with a bottom column, and the outer side of the mixing tank body is connected with a discharge pipe; The inner wall of the mixing tank body is fixedly connected to the outer side of the material storage shell, the bottom of the T-shaped round rod passes through the top of the mixing tank body and extends to the inside of the material storage shell, the inner wall of the material storage shell is fixedly connected to the outer side of the square partition, the outer side of the mixing mechanism is fixedly connected to the inner wall of the mixing tank body, the top of the mixing mechanism is connected to the bottom of the self-priming pump 1, the top of the self-priming pump 1 is connected to the bottom of the material storage shell, the bottom of the mixing mechanism is connected to the top of the discharge mechanism, the bottom of the discharge mechanism is connected to the top of the injection mechanism, the top of the injection mechanism is fixedly connected to the bottom of the mixing mechanism, and the outer side of the injection mechanism is fixedly connected to the inner wall of the mixing tank body; Wherein, the mixing mechanism comprises: A mixing round shell, wherein a motor is arranged on the top of the mixing round shell; An inclined push plate is used to fully stir and mix the mononitrotoluene and the mixed acid liquid in the mixing round shell. By setting a mixing round shell with a smaller volume and setting an inclined push plate, the mononitrotoluene and the mixed acid liquid are fully stirred and mixed over a large area, so as to prevent the mononitrotoluene liquid just added from floating on the top of the mixed acid liquid and being difficult to quickly blend into the bottom due to the large internal space of the commonly used mixing tank, resulting in poor mixing effect. The mixed acid liquid at the bottom of the inner wall of the mixing round shell is shoveled up by setting the inclined surface of the inclined push plate, so as to prevent a part of the mixed acid liquid from always accumulating at the bottom of the inner wall of the mixing round shell and being difficult to fully contact and react with the mononitrotoluene. A linkage rod is set on one side of the inclined push plate; The top of the mixing round shell is fixedly connected to the output end of the motor, the driving shaft of the motor is fixedly connected to the top of the linkage rod, the outer side of the linkage rod is fixedly connected to one side of the inclined push plate, and the top of the linkage rod is rotatably connected to the inner wall of the mixing round shell through a rotating bolt; The top of the mixing round shell is connected to the bottom of the self-priming pump, the outer side of the mixing round shell is fixedly connected to the inner wall of the mixing tank body, and the bottom of the mixing round shell is connected to the top of the discharge mechanism; A bottom-opened circular hole is provided at the bottom of the mixing round shell, a long connecting rod is fixedly connected to the bottom of the linkage rod, and an inclined circular hole is provided on the outer side of the inclined push plate. By arranging a plurality of inclined circular holes on the surface of the inclined push plate, it is convenient to gradually split and separate the mixed acid liquid that moves upward as a whole through the inclined circular holes, so as to prevent the mixed acid liquid pushed by the inclined push plate from still showing a tendency of moving as a whole, which makes it difficult for mononitrotoluene to quickly blend into the mixed acid liquid for reaction. An inclined guide plate is fixedly connected to one side of the inclined push plate, and the position of the raw materials in the mixing round shell is adjusted by arranging the inclined guide plate on one side of the inclined push plate to facilitate discharge from the bottom-opened circular hole, so as to prevent a part of the dinitrotoluene from accumulating near the linkage rod or at a position of the inner wall of the circular empty shell far away from the linkage rod after mixing, so as to be difficult to be discharged from the bottom-opened circular hole. The bottom of the long connecting rod is fixedly connected to the top of the injection mechanism, and the top of the long connecting rod passes through the bottom of the mixing shell and is rotatably connected to the mixing shell through a bearing; There are three bottom-opening circular holes, and the three bottom-opening circular holes are evenly distributed on the bottom of the mixing circular shell, there are three inclined push plates, and the three inclined push plates are evenly distributed on the outside of the linkage rod, there are multiple inclined circular holes, and the multiple inclined circular holes are evenly distributed on the inclined push plate, there are multiple inclined guide plates, and the multiple inclined guide plates are evenly distributed on one side of the inclined push plate.

[0004] Furthermore, the discharging mechanism comprises a convex material pipe, the bottom of which is connected to a self-priming pump 2, an inner wall of the convex material pipe is fixedly connected to an upper spring, the upper spring loses the pressure of the circular block being sucked and pushes the circular block upward through the stretching force to seal the top of the convex material pipe, preventing the circular block from being difficult to move back upward so that the convex material pipe is always connected to the mixing round shell and affects the mixing of the raw materials, the top of the upper spring is fixedly connected to the circular block, the top of the circular block is penetrated and fixedly connected to a thin penetration rod, and the circular block is fixedly limited by the thin penetration rod fixed to the cross baffle rod when it moves downward, preventing the circular block from tilting or deflecting due to uneven suction when it moves downward, causing dinitrotoluene to enter the area at the bottom of the circular block inside the convex material pipe in advance, the top of the thin penetration rod is fixedly connected to the cross baffle rod, A cross blocking rod is arranged at the position of the part to resist and limit the upward moving circular blocking block, so as to prevent the circular blocking block from moving to the inside of the mixing shell when it is thrust upward and still not blocking the convex material pipe, resulting in leakage of raw materials in the convex material pipe; an annular plate is fixedly connected to the inner wall of the convex material pipe, and an annular plate with a certain height is arranged at the bottom of the inner wall of the convex material pipe to resist the circular blocking block, so as to prevent the circular blocking block from moving down to a deeper depth when the suction force of the self-priming pump is large, and the upper spring is completely compressed, resulting in difficulty in drawing the dinitrotoluene in the convex material pipe into the injection mechanism; an arc-shaped through hole is opened on the outer side of the annular plate, the top of the convex material pipe is connected with the bottom of the mixing shell, the bottom of the self-priming pump is connected with the top of the injection mechanism, the outer side of the circular blocking block is slidably connected to the inner wall of the convex material pipe, and the outer side of the cross blocking rod is fixedly connected to the inner wall of the convex material pipe.

[0005] Furthermore, the injection mechanism comprises a circular shell, a discharge hole is formed at the bottom of the circular shell, the inner wall of the circular shell is rotatably connected with a linkage round block through a rotating bolt, the outer side of the linkage round block is fixedly connected with an inclined scraper, and the dinitrotoluene in the circular shell is ejected out of the discharge hole under the spray force of the self-priming pump 2 and the pushing force of the inclined scraper, so as to prevent the generated dinitrotoluene from being a solid-liquid mixture and easily clogging the discharge hole by residue when passing through the discharge hole only by extrusion force, and the rotating inclined scraper scrapes and cleans various places on the inner wall of the circular shell, so as to prevent the generated solid-liquid mixture dinitrotoluene from remaining in the circular shell and being difficult to handle and affecting subsequent production effects, and the outer side of the inclined scraper is fixedly connected with an arc-shaped barbed bar, which intermittently pierces the discharge hole when rotating around the linkage round block, so as to prevent the discharge hole from being blocked for a long time After use, dinitrotoluene residues gradually accumulate inside, blocking it and making it difficult to discharge materials. A circular hole for passing materials is provided on the outer surface of the inclined scraper. The circular hole for passing materials is provided on the inclined scraper to facilitate the passage of dinitrotoluene near the top of the inner wall of the circular shell, thereby preventing the three inclined scrapers on the outside of the linkage round block from dividing the inside of the circular shell into three isolated areas, which affects the discharge effect. The top of the circular shell is connected to the bottom of the second self-priming pump, the outside of the circular shell is fixedly connected to the inner wall of the mixing tank body, the top of the linkage round block is fixedly connected to the bottom of the long connecting rod, three inclined scrapers are provided, and the three inclined scrapers are evenly distributed on the linkage round block, a plurality of arc-shaped barbed bars are provided, and a plurality of the arc-shaped barbed bars are distributed on the inclined scraper, a plurality of circular holes for passing materials are provided, and a plurality of the circular holes for passing materials are distributed on the inclined scraper.

[0006] The present invention has the beneficial effects: 1. The present invention provides a mixing round shell with a smaller volume and an inclined push plate to fully stir and mix the mononitrotoluene and the mixed acid solution over a large area, so as to prevent the mononitrotoluene liquid just added from often floating on the top of the mixed acid solution and being difficult to quickly blend into the bottom due to the large internal space of the commonly used mixing tank, resulting in poor mixing effect. An annular plate with a certain height is provided at the bottom of the inner wall of the convex material pipe to resist the circular block, so as to prevent the circular block from moving down to a deep depth when the suction force of the self-priming pump is large, and the upper spring is completely compressed, so that the dinitrotoluene in the convex material pipe is difficult to be drawn into the injection mechanism. Under the spray force of the self-priming pump and the pushing force of the inclined scraper, the dinitrotoluene in the circular empty shell is ejected out of the discharge circular hole, so as to prevent the generated dinitrotoluene from being a solid-liquid mixture and easily leaving residue when passing through the discharge circular hole only by the extrusion force, thereby blocking the discharge circular hole.

[0007] 2. The present invention provides a mixing mechanism, a mixing round shell with a small volume and an inclined push plate to fully stir and mix the mononitrotoluene and the mixed acid liquid over a large area, so as to prevent the mononitrotoluene liquid just added from floating on the top of the mixed acid liquid due to the large internal space of the commonly used mixing tank, and being difficult to quickly blend into the bottom, resulting in poor mixing effect. The inclined surface of the inclined push plate is used to shovel up the mixed acid liquid at the bottom of the inner wall of the mixing round shell, so as to prevent a part of the mixed acid liquid from always accumulating at the bottom of the inner wall of the mixing round shell and being difficult to fully contact and react with the mononitrotoluene. A plurality of inclined circular holes are arranged on the surface of the inclined push plate so as to facilitate the gradual splitting and separation of the mixed acid liquid that moves upward as a whole through the inclined circular holes, thereby preventing the mixed acid liquid pushed by the inclined push plate from still showing a tendency to move as a whole, which makes it difficult for mononitrotoluene to quickly blend into the mixed acid liquid for reaction; an inclined guide plate is arranged on one side of the inclined push plate to adjust the position of the raw materials in the mixed circular shell so as to facilitate discharge from the bottom circular hole, thereby preventing a portion of dinitrotoluene from accumulating near the linkage rod or at a position on the inner wall of the circular empty shell far away from the linkage rod after mixing, which makes it difficult to be discharged from the bottom circular hole.

[0008] 3. The present invention sets a discharge mechanism, and sets a ring plate with a certain height at the bottom of the inner wall of the convex material pipe to resist the circular block, so as to prevent the circular block from moving down to a deeper depth when the suction force of the self-priming pump is large, and the upper spring is completely compressed, so that the dinitrotoluene in the convex material pipe is difficult to be drawn into the injection mechanism. When the circular block moves down, it is always fixed and limited by the thin penetration rod fixed with the cross stop rod, so as to prevent the circular block from tilting or deviating due to uneven suction when moving down, so as to prevent the dinitrotoluene from entering the convex material pipe in advance. In the area at the bottom of the block, the upper spring loses the pressure of the circular block being sucked in and pushes the circular block upward through the extension force to seal the top of the convex material pipe, preventing the circular block from being difficult to move back upward so that the convex material pipe is always connected with the mixing shell and affects the mixing of the raw materials. A cross stopper is provided on the inner wall of the convex material pipe near the top to resist and limit the upward moving circular block, preventing the circular block from moving upward under the thrust and moving to the inside of the mixing shell without sealing the convex material pipe, causing the raw materials to leak inside the convex material pipe.

[0009] 4. The present invention provides an ejection mechanism to eject the dinitrotoluene in the circular shell out of the discharge circular hole under the ejection force of the second self-priming pump and the pushing force of the inclined scraper, so as to prevent the generated dinitrotoluene from being easily blocked by residue when the solid-liquid mixture passes through the discharge circular hole only by the extrusion force; the rotating inclined scraper scrapes and cleans the inner wall of the circular shell to prevent the generated solid-liquid mixture dinitrotoluene from remaining in the circular shell and being difficult to handle, which affects the subsequent production effect; the dinitrotoluene near the top of the inner wall of the circular shell is convenient to pass through by opening a material-passing circular hole on the inclined scraper, so as to prevent the three inclined scrapers on the outer side of the linkage round block from dividing the inside of the circular shell into three isolated areas and affecting the discharge effect; the arc-shaped barbed strip intermittently penetrates into the discharge circular hole when rotating around the linkage round block, so as to prevent the dinitrotoluene residue from gradually accumulating inside the discharge circular hole after long-term use and blocking it and making it difficult to discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the side cross-section structure of the dinitrotoluene production device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the dinitrotoluene production device of the present invention; Figure 3 It is a schematic diagram of the side section structure of the mixing mechanism of the present invention; Figure 4 It is a schematic diagram of the side cross-section structure of the bottom of the mixing mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the discharging mechanism of the present invention; Figure 6 It is a schematic diagram of the internal structure of the discharge mechanism of the present invention; Figure 7 It is a schematic diagram of the side section structure of the injection mechanism of the present invention; Figure 8 It is a schematic diagram of the side cross-section structure of the bottom of the injection mechanism of the present invention; In the figure: 1, mixing tank; 2, empty shell for storing materials; 3, T-shaped round rod; 4, square partition; 5, bottom column; 6, discharge pipe; 7, mixing mechanism; 8, self-priming pump 1; 9, discharge mechanism; 10, injection mechanism; 701, mixing round shell; 702, bottom round hole; 703, motor; 704, linkage rod; 705, long connecting rod; 706, inclined push plate; 707, inclined round hole; 708, Inclined guide plate; 901, convex material pipe; 902, self-priming pump 2; 903, top spring; 904, round blocking block; 905, thin penetrating rod; 906, cross blocking rod; 907, annular plate; 908, arc-shaped through hole; 1001, round hollow shell; 1002, discharge circular hole; 1003, linkage circular block; 1004, inclined scraper; 1005, arc-shaped barbed strip; 1006, material passing circular hole. DETAILED DESCRIPTION

[0011] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses. For the first embodiment, please refer to Figure 1-Figure 4 The present invention is a dinitrotoluene production device in which a mixing tank is provided with a jet mixer, comprising: A mixing tank body 1, the inner wall of which is provided with a material storage shell 2; A T-shaped round rod 3, which is used for inserting and plugging the empty storage shell 2; A square partition 4, which is used to separate the interior of the empty storage shell 2 into two areas; A mixing mechanism 7, the mixing mechanism 7 is used to fully stir and mix the mononitrotoluene and the mixed acid solution, and a self-priming pump 8 is provided on the top of the mixing mechanism 7; A discharge mechanism 9, which is used to discharge the mixed dinitrotoluene from the mixing mechanism 7; The material injection mechanism 10 is used to inject the dinitrotoluene discharged by the material discharging mechanism 9 onto the bottom of the inner wall of the mixing tank body 1; A bottom column 5 is fixedly connected to the bottom of the mixing tank body 1, and a discharge pipe 6 is connected to the outside of the mixing tank body 1; The inner wall of the mixing tank body 1 is fixedly connected to the outer side of the material storage shell 2, the bottom of the T-shaped round rod 3 passes through the top of the mixing tank body 1 and extends to the inside of the material storage shell 2, the inner wall of the material storage shell 2 is fixedly connected to the outer side of the square partition 4, the outer side of the mixing mechanism 7 is fixedly connected to the inner wall of the mixing tank body 1, the top of the mixing mechanism 7 is connected to the bottom of the self-priming pump 8, the top of the self-priming pump 8 is connected to the bottom of the material storage shell 2, the bottom of the mixing mechanism 7 is connected to the top of the discharge mechanism 9, the bottom of the discharge mechanism 9 is connected to the top of the injection mechanism 10, the top of the injection mechanism 10 is fixedly connected to the bottom of the mixing mechanism 7, and the outer side of the injection mechanism 10 is fixedly connected to the inner wall of the mixing tank body 1; Wherein, the mixing mechanism 7 comprises: A mixing round shell 701, a motor 703 is arranged on the top of the mixing round shell 701; An inclined push plate 706 is used to fully stir and mix the mononitrotoluene and the mixed acid solution in the mixing shell 701. A linkage rod 704 is disposed on one side of the inclined push plate 706. The top of the mixing round shell 701 is fixedly connected to the output end of the motor 703, the driving shaft of the motor 703 is fixedly connected to the top of the linkage rod 704, the outer side of the linkage rod 704 is fixedly connected to one side of the inclined push plate 706, and the top of the linkage rod 704 is rotatably connected to the inner wall of the mixing round shell 701 through a rotating bolt; The top of the mixing round shell 701 is connected to the bottom of the self-priming pump 8, the outer side of the mixing round shell 701 is fixedly connected to the inner wall of the mixing tank body 1, and the bottom of the mixing round shell 701 is connected to the top of the discharge mechanism 9; A bottom opening circular hole 702 is opened at the bottom of the mixing round shell 701, a long connecting rod 705 is fixedly connected to the bottom of the linkage rod 704, an inclined circular hole 707 is opened on the outer side of the inclined push plate 706, and an inclined guide plate 708 is fixedly connected to one side of the inclined push plate 706; The bottom of the long connecting rod 705 is fixedly connected to the top of the injection mechanism 10, and the top of the long connecting rod 705 passes through the bottom of the mixing shell 701 and is rotatably connected to the mixing shell 701 through a bearing; There are three bottom-opened circular holes 702, and the three bottom-opened circular holes 702 are evenly distributed on the bottom of the mixing round shell 701, there are three inclined push plates 706, and the three inclined push plates 706 are evenly distributed on the outside of the linkage rod 704, there are multiple inclined circular holes 707, and the multiple inclined circular holes 707 are evenly distributed on the inclined push plate 706, there are multiple inclined guide plates 708, and the multiple inclined guide plates 708 are evenly distributed on one side of the inclined push plate 706. When in use, mononitrotoluene and mixed acid are respectively added into the two areas separated by the square partition 4 in the storage empty shell 2, and then the T-shaped round rod 3 is inserted from the top of the storage empty shell 2 to seal the storage empty shell 2, and the mononitrotoluene and mixed acid in the storage empty shell 2 are respectively pumped into the mixing The mixing mechanism 7 is fully stirred and mixed to generate dinitrotoluene. After the mixing is completed, the dinitrotoluene in the mixing mechanism 7 can be pumped into the injection mechanism 10 through the discharging mechanism 9. The mixed dinitrotoluene is sprayed on the bottom of the inner wall of the mixing tank body 1 and discharged to the outside through the discharge pipe 6 by the continuous discharging of the discharging mechanism 9 and the pushing action of the injection mechanism 10. Here, the injection mechanism 10 sprays the mixed dinitrotoluene in a scattered manner similar to a shower. When the mononitrotoluene and the mixed acid enter the mixing round shell 701 through the self-priming pump 8, the motor 703 is started to drive the linkage rod 704 to rotate. The rotation of the linkage rod 704 drives the long connecting rod 705 at the bottom and the inclined push plate 706 on the outside to rotate together. The inclined push plate 70 6 When rotating, the bottom is always in contact with the bottom of the inner wall of the mixing shell 701. By setting the mixing shell 701 with a smaller volume and setting the inclined push plate 706, the mononitrotoluene and the mixed acid liquid are fully stirred and mixed in a large area. When the inclined push plate 706 rotates with the linkage rod 704, the mixed acid liquid deposited on the bottom of the inner wall of the mixing shell 701 is pushed, so that the mixed acid liquid gradually moves upward along the inclined surface of the inclined push plate 706 under the action of the thrust. The mixed acid liquid at the bottom of the inner wall of the mixing shell 701 is shoveled up by the inclined surface setting of the inclined push plate 706. The aperture size of the inclined circular hole 707 opened on the surface of the inclined push plate 706 is set to be small, which is convenient for the mononitrotoluene liquid and the mixed acid liquid to pass through. By setting a plurality of inclined circular holes 707 on the surface of the inclined push plate 706 7 is convenient for gradually splitting and separating the mixed acid liquid that moves upward as a whole through the inclined circular hole 707. When the inclined push plate 706 rotates with the linkage rod 704, it drives the inclined guide plate 708 on one side to rotate around the linkage rod. When the inclined guide plate 708 rotates forward around the linkage rod 704, it pushes the dinitrotoluene passing through the inclined circular hole 707 to gradually move along its inclined surface in the direction away from the linkage rod 704 along the inner wall of the mixing round shell 701. When the inclined guide plate 708 rotates reversely around the linkage rod 704, it pushes the dinitrotoluene inside the circular empty shell 1001 to gradually move along its inclined surface toward the linkage rod 704. By arranging the inclined guide plate 708 on one side of the inclined push plate 706, the position of the raw materials in the mixing round shell 701 can be adjusted to facilitate discharge from the bottom-opened circular hole 702.

[0012] For the second embodiment, please refer to Figure 1-Figure 8 The present invention provides a dinitrotoluene production device with a mixing tank provided with a jet mixer: the discharge mechanism 9 comprises a convex material pipe 901, the bottom of the convex material pipe 901 is connected to a self-priming pump 902, the inner wall of the convex material pipe 901 is fixedly connected to an upper spring 903, the top of the upper spring 903 is fixedly connected to a circular block 904, the top of the circular block 904 is penetrated and fixedly connected to a thin rod 905, the top of the thin rod 905 is fixedly connected to A cross baffle 906, an annular plate 907 is fixedly connected to the inner wall of the convex material tube 901, an arc-shaped through hole 908 is opened on the outer side of the annular plate 907, the top of the convex material tube 901 is connected to the bottom of the mixing shell 701, the bottom of the self-priming pump 902 is connected to the top of the injection mechanism 10, the outer side of the circular block 904 is slidably connected to the inner wall of the convex material tube 901, and the outer side of the cross baffle 906 is fixedly connected to the inner wall of the convex material tube 901; The material injection mechanism 10 includes a circular hollow shell 1001, a discharge circular hole 1002 is provided at the bottom of the circular hollow shell 1001, a linkage circular block 1003 is rotatably connected to the inner wall of the circular hollow shell 1001 through a rotating bolt, an inclined scraper 1004 is fixedly connected to the outer side of the linkage circular block 1003, an arc-shaped barbed strip 1005 is fixedly connected to the outer side of the inclined scraper 1004, a material passing circular hole 1006 is provided on the outer surface of the inclined scraper 1004, the top of the circular hollow shell 1001 is connected to the bottom of the self-priming pump 902, the outer side of the circular hollow shell 1001 is fixedly connected to the inner wall of the mixing tank body 1, the top of the linkage circular block 1003 is fixedly connected to the bottom of the long connecting rod 705, three inclined scrapers 1004 are provided, and the three inclined scrapers 10 04 is evenly distributed on the linkage round block 1003, a plurality of arc-shaped barbed strips 1005 are provided, and a plurality of arc-shaped barbed strips 1005 are distributed on the inclined scraper 1004, a plurality of material-passing circular holes 1006 are provided, and a plurality of material-passing circular holes 1006 are distributed on the inclined scraper 1004. When in use, when the raw materials in the mixing round shell 701 are mixed to generate dinitrotoluene, the convex material pipe 901 is evacuated by the self-priming pump 902 so that the circular block 904 gradually moves downward on the inner wall of the convex material pipe 901. When the circular block 904 gradually moves downward, the dinitrotoluene in the mixing round shell 701 simultaneously falls into the area of ​​the convex material pipe 901 located at the top of the circular block 904, until the circular block 904 moves down to a point where it is not in contact with the inner wall of the convex material pipe 901. When the circular block 904 is touched, the dinitrotoluene on the top of the circular block 904 enters the area near the bottom of the inner wall of the convex material tube 901 from the outside, passes through the arc through hole 908, and is sucked into the injection mechanism 10 through the self-priming pump 902. When the circular block 904 moves downward, it compresses the top spring 903 at the bottom. By setting an annular plate 907 at the bottom of the inner wall of the convex material tube 901, the circular block 904 that gradually moves downward is limited in movement. The maximum depth of the circular block 904 moving downward is the depth that is resisted by the annular plate 907 when it contacts the annular plate 907. At this time, the top spring 903 is not in a fully compressed state, and there is still a gap between the spring coils. By setting an annular plate 907 with a certain height at the bottom of the inner wall of the convex material tube 901, the circular block 904 is used to resist, and the circular block 904 is fixed and limited by the thin penetration rod 905 fixed with the cross stopper 906 when it moves downward. When the mixing shell 701 is not pumped, the upper spring 903 loses the pressure of the circular block 904 being sucked and pushes the circular block 904 upward through the extension force to block the top of the convex material tube 901. The cross stopper 906 is set at the position near the top of the inner wall of the convex material tube 901 to resist and limit the upward circular block 904. The self-priming pump 902 draws the dinitrotoluene in the mixing shell 701 into the circular empty shell 1001. At the same time, the long connecting rod 705 rotates to drive the linkage circular block 1003 at the bottom to rotate, and the rotation of the linkage circular block 1003 drives the outer inclined scraper 1004 to rotate.When the inclined scraper 1004 rotates, it pushes the dinitrotoluene through its inclined surface setting and exerts a downward pushing force on it. When the dinitrotoluene fills the circular shell 1001, the dinitrotoluene in the circular shell 1001 is ejected out of the discharge hole 1002 under the spray force of the self-priming pump 2902 and the pushing force of the inclined scraper 1004. As the rotating linked round block 1003 rotates, the inclined scraper 1004 is in contact with the inner wall of the circular shell 1001 at all times, and the rotating inclined scraper 1004 scrapes and cleans various parts of the inner wall of the circular shell 1001. When the inclined scraper 1004 rotates, a portion of the dinitrotoluene with a higher height in the circular shell 1001 will pass through the material passing hole 1006. By opening the material passing hole 1006 on the inclined scraper 1004, the dinitrotoluene near the top of the inner wall of the circular shell 1001 can pass through. When the inclined scraper 1004 rotates with the linkage round block 1003, the arc-shaped barbed bar 1005 on one side rotates around the linkage round block 1003. When the arc-shaped barbed bar 1005 rotates around the linkage round block 1003, it intermittently pierces the discharge round hole 1002.

[0013] When the present invention is operated and used, mononitrotoluene and mixed acid solution are respectively added into two areas separated by the square partition 4 in the storage shell 2, and then the T-shaped round rod 3 is inserted from the top of the storage shell 2 to seal the storage shell 2, and the mononitrotoluene and mixed acid solution in the storage shell 2 are respectively pumped into the mixing mechanism 7 by a self-priming pump 8 for sufficient stirring and mixing to generate dinitrotoluene. After the mixing is completed, the dinitrotoluene in the mixing mechanism 7 can be pumped into the injection mechanism 10 by the discharge mechanism 9. The mixed dinitrotoluene is continuously discharged by the discharge mechanism 9 and pushed by the injection mechanism 10, and is sprayed on the bottom of the inner wall of the mixing tank body 1 and discharged to the outside through the discharge pipe 6. Here, the injection mechanism 10 performs a similar process to the flower pump to mix the mixed dinitrotoluene. When the mononitrotoluene and the mixed acid enter the mixing shell 701 through the self-priming pump 8, the motor 703 is started to drive the linkage rod 704 to rotate. The rotation of the linkage rod 704 drives the long connecting rod 705 at the bottom and the inclined push plate 706 on the outside to rotate together. When the inclined push plate 706 rotates, the bottom is always in contact with the bottom of the inner wall of the mixing shell 701. By setting the mixing shell 701 with a smaller volume and setting the inclined push plate 706, the mononitrotoluene and the mixed acid are fully stirred and mixed over a large area. When the linkage rod 704 rotates, the inclined push plate 706 pushes the mixed acid deposited on the bottom of the inner wall of the mixing shell 701, so that the mixed acid gradually moves upward along the inclined surface of the inclined push plate 706 under the action of the thrust, and the mixed acid gradually moves upward along the inclined surface of the inclined push plate 706 through the inclined push plate 706. The inclined surface of the push plate 706 is set to scoop up the mixed acid liquid at the bottom of the inner wall of the mixing shell 701. The aperture size of the inclined circular hole 707 opened on the surface of the inclined push plate 706 is set to be small to facilitate the passage of the mononitrotoluene liquid and the mixed acid liquid. By setting a plurality of inclined circular holes 707 on the surface of the inclined push plate 706, it is convenient to gradually separate the mixed acid liquid that moves upward as a whole through the inclined circular holes 707. When the inclined push plate 706 rotates with the linkage rod 704, it drives the inclined guide plate 708 on one side to rotate around the linkage rod. When the inclined guide plate 708 rotates forward around the linkage rod 704, it pushes the dinitrotoluene passing through the inclined circular hole 707 to gradually move along its inclined surface in the direction of the inner wall of the mixing shell 701 away from the linkage rod 704. The inclined guide plate 708 rotates around the linkage rod 704. 04 is reversed, and the dinitrotoluene in the circular empty shell 1001 is pushed to gradually move along its inclined surface toward the linkage rod 704. An inclined guide plate 708 is arranged on one side of the inclined push plate 706 to adjust the position of the raw materials in the mixing circular shell 701 so as to facilitate discharge from the bottom circular hole 702. When the raw materials in the mixing circular shell 701 are mixed to generate dinitrotoluene, the convex material pipe 901 is evacuated by the self-priming pump 902 so that the circular block 904 gradually moves downward on the inner wall of the convex material pipe 901. When the circular block 904 gradually moves downward, the dinitrotoluene in the mixing circular shell 701 simultaneously falls into the area of ​​the convex material pipe 901 located at the top of the circular block 904, until the circular block 904 moves downward to the point where it does not contact the inner wall of the convex material pipe 901.The dinitrotoluene on the top of the circular block 904 enters the area near the bottom of the inner wall of the convex material tube 901 from the outside, passes through the arc through hole 908, and is sucked into the injection mechanism 10 through the self-priming pump 902. When the circular block 904 moves downward, it compresses the top spring 903 at the bottom. By setting an annular plate 907 at the bottom of the inner wall of the convex material tube 901, the circular block 904 that gradually moves downward is limited in movement. The maximum depth of the circular block 904 moving downward is the depth that is resisted by the annular plate 907 when it contacts the annular plate 907. At this time, the top spring 903 is not in a fully compressed state, and there is still a gap between the spring coils. An annular plate 907 of a certain height is provided at the bottom of the inner wall of the convex material tube 901 to resist the circular block 904. When the circular block 904 moves downward, it is always fixed and limited by the thin penetrating rod 905 fixed with the cross stopper 906. When the mixing shell 701 is not pumped, the upper spring 903 loses the pressure of the circular block 904 being sucked and pushes the circular block 904 upward through the stretching force to block the top of the convex material tube 901. By setting a cross stopper 906 at a position near the top of the inner wall of the convex material tube 901 to resist and limit the upward circular block 904, the self-priming pump 902 removes the dinitrotoluene in the mixing shell 701. The dinitrotoluene is pumped into the circular shell 1001, and at the same time, the long connecting rod 705 rotates to drive the linkage round block 1003 at the bottom to rotate, and the linkage round block 1003 rotates to drive the inclined scraper 1004 on the outside to rotate. When the inclined scraper 1004 rotates, it pushes the dinitrotoluene through its inclined surface setting and exerts a downward pushing force on it. When the dinitrotoluene fills the circular shell 1001, the dinitrotoluene in the circular shell 1001 is ejected out of the discharge hole 1002 under the spray force of the self-priming pump 2902 and the pushing force of the inclined scraper 1004. As the linkage round block 1003 rotates, the inclined scraper 1004 is constantly in contact with the inner wall of the circular shell 1001. The rotating oblique scraper 1004 scrapes and cleans the inner wall of the circular shell 1001. When the oblique scraper 1004 rotates, a part of the dinitrotoluene with a higher height in the circular shell 1001 will pass through the material passing hole 1006. By opening the material passing hole 1006 on the oblique scraper 1004, the dinitrotoluene near the top of the inner wall of the circular shell 1001 can pass through. When the oblique scraper 1004 rotates with the linkage round block 1003, the arc-shaped barbed bar 1005 on one side rotates around the linkage round block 1003. When the arc-shaped barbed bar 1005 rotates around the linkage round block 1003, it intermittently pierces the discharge round hole 1002.

[0014] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A dinitrotoluene production device having a mixing tank provided with a jet mixer, characterized in that: include: A mixing tank body (1), wherein the inner wall of the mixing tank body (1) is provided with a material storage shell (2); A T-shaped round rod (3), the T-shaped round rod (3) being used for inserting and plugging the empty material storage shell (2); A square partition (4), the square partition (4) is used to separate the interior of the empty material storage shell (2) into two areas; A mixing mechanism (7), the mixing mechanism (7) is used to fully stir and mix the mononitrotoluene and the mixed acid solution, and a self-priming pump (8) is provided on the top of the mixing mechanism (7); a discharge mechanism (9), the discharge mechanism (9) being used to discharge the mixed dinitrotoluene from the mixing mechanism (7); An ejection mechanism (10), the ejection mechanism (10) being used to eject the dinitrotoluene discharged by the discharge mechanism (9) onto the bottom of the inner wall of the mixing tank (1); The bottom of the mixing tank body (1) is fixedly connected to a bottom column (5), and the outside of the mixing tank body (1) is connected to a discharge pipe (6); The inner wall of the mixing tank body (1) is fixedly connected to the outer side of the material storage shell (2); the bottom of the T-shaped round rod (3) passes through the top of the mixing tank body (1) and extends to the inside of the material storage shell (2); the inner wall of the material storage shell (2) is fixedly connected to the outer side of the square partition (4); the outer side of the mixing mechanism (7) is fixedly connected to the inner wall of the mixing tank body (1); the top of the mixing mechanism (7) is connected to the bottom of a self-priming pump (8); the top of the self-priming pump (8) is connected to the bottom of the material storage shell (2); the bottom of the mixing mechanism (7) is connected to the top of a discharge mechanism (9); the bottom of the discharge mechanism (9) is connected to the top of a material injection mechanism (10); the top of the material injection mechanism (10) is fixedly connected to the bottom of the mixing mechanism (7); and the outer side of the material injection mechanism (10) is fixedly connected to the inner wall of the mixing tank body (1).

2. A dinitrotoluene production device according to claim 1, wherein the mixing tank is provided with a jet mixer, characterized in that: The mixing mechanism (7) comprises: A mixing round shell (701), wherein a motor (703) is arranged on the top of the mixing round shell (701); An inclined push plate (706) is used to fully stir and mix the mononitrotoluene and the mixed acid solution in the mixing shell (701), and a linkage rod (704) is disposed on one side of the inclined push plate (706); The top of the mixing round shell (701) is fixedly connected to the output end of the motor (703), the drive shaft of the motor (703) is fixedly connected to the top of the linkage rod (704), the outer side of the linkage rod (704) is fixedly connected to one side of the inclined push plate (706), and the top of the linkage rod (704) is rotatably connected to the inner wall of the mixing round shell (701) via a rotating bolt; The top of the mixing round shell (701) is connected to the bottom of the self-priming pump (8), the outer side of the mixing round shell (701) is fixedly connected to the inner wall of the mixing tank (1), and the bottom of the mixing round shell (701) is connected to the top of the discharge mechanism (9); The bottom of the mixing round shell (701) is provided with a bottom-opened circular hole (702), the bottom of the linkage rod (704) is fixedly connected to a long connecting rod (705), the outer side of the inclined push plate (706) is provided with an inclined circular hole (707), and one side of the inclined push plate (706) is fixedly connected to an inclined guide plate (708).

3. A dinitrotoluene production device according to claim 2, wherein the mixing tank is provided with a jet mixer, characterized in that: The bottom of the long connecting rod (705) is fixedly connected to the top of the material shooting mechanism (10), and the top of the long connecting rod (705) passes through the bottom of the mixing round shell (701) and is rotatably connected to the mixing round shell (701) via a bearing.

4. A dinitrotoluene production device according to claim 2, wherein the mixing tank is provided with a jet mixer, characterized in that: There are three bottom-opening circular holes (702), and the three bottom-opening circular holes (702) are evenly distributed on the bottom of the mixing circular shell (701); there are three inclined push plates (706), and the three inclined push plates (706) are evenly distributed on the outside of the linkage rod (704); there are multiple inclined circular holes (707), and the multiple inclined circular holes (707) are evenly distributed on the inclined push plate (706); there are multiple inclined guide plates (708), and the multiple inclined guide plates (708) are evenly distributed on one side of the inclined push plate (706).

5. The dinitrotoluene production device according to claim 1, wherein the mixing tank is provided with a jet mixer, characterized in that: The discharging mechanism (9) comprises a convex material pipe (901), the bottom of the convex material pipe (901) is connected to a second self-priming pump (902), the inner wall of the convex material pipe (901) is fixedly connected to an upper spring (903), the top of the upper spring (903) is fixedly connected to a circular block (904), the top of the circular block (904) is penetrated by and fixedly connected to a thin penetration rod (905), the top of the thin penetration rod (905) is fixedly connected to a cross blocking rod (906), the inner wall of the convex material pipe (901) is fixedly connected to an annular plate (907), and the outer side of the annular plate (907) is provided with an arc-shaped through hole (908).

6. A dinitrotoluene production device according to claim 5, wherein the mixing tank is provided with a jet mixer, characterized in that: The top of the convex material pipe (901) is connected to the bottom of the mixing round shell (701), and the bottom of the second self-priming pump (902) is connected to the top of the injection mechanism (10).

7. The dinitrotoluene production device according to claim 5, wherein the mixing tank is provided with a jet mixer, characterized in that: The outer side of the circular blocking block (904) is slidably connected to the inner wall of the convex material tube (901), and the outer side of the cross blocking rod (906) is fixedly connected to the inner wall of the convex material tube (901).

8. The dinitrotoluene production device according to claim 1, wherein the mixing tank is provided with a jet mixer, characterized in that: The material ejection mechanism (10) comprises a circular hollow shell (1001), a material discharge circular hole (1002) is provided at the bottom of the circular hollow shell (1001), a linkage circular block (1003) is rotatably connected to the inner wall of the circular hollow shell (1001) via a rotating bolt, an inclined scraper (1004) is fixedly connected to the outer side of the linkage circular block (1003), an arc-shaped barbed strip (1005) is fixedly connected to the outer side of the inclined scraper (1004), and a material passing circular hole (1006) is provided on the outer surface of the inclined scraper (1004).

9. A dinitrotoluene production device according to claim 8, wherein the mixing tank is provided with a jet mixer, characterized in that: The top of the circular hollow shell (1001) is connected to the bottom of the second self-priming pump (902), the outer side of the circular hollow shell (1001) is fixedly connected to the inner wall of the mixing tank body (1), and the top of the linkage round block (1003) is fixedly connected to the bottom of the long connecting rod (705).

10. The dinitrotoluene production device according to claim 8, wherein the mixing tank is provided with a jet mixer, characterized in that: The inclined scrapers (1004) are provided in three numbers, and the three inclined scrapers (1004) are evenly distributed on the linkage round block (1003); the arc-shaped barbs (1005) are provided in plurality, and the plurality of arc-shaped barbs (1005) are distributed on the inclined scrapers (1004); and the material passing circular holes (1006) are provided in plurality, and the plurality of material passing circular holes (1006) are distributed on the inclined scrapers (1004).

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