Drying device for benzotriazole

Abstract

The utility model relates to a benzotriazole drying device. The benzotriazole drying device comprises a feeding section, a drying section, a discharging section and an air inlet section which are sequentially arranged from top to bottom, the feeding section comprises a feeding box, a box cover fixed to an opening in the top of the feeding box in a sealed mode, and a plurality of partition plates vertically fixed between the inner walls of the front side and the rear side of the feeding box and sequentially distributed at equal intervals from left to right. The drying section comprises a drying groove and a drying pipe transversely inserted into the left side or the right side of the drying groove. The discharging section comprises a discharging groove, a discharging bin fixed to the left side or the right side of the discharging groove and communicated with the interior of the discharging groove, and a discharging pipe connected to the bottom of the discharging bin in an inserted mode. According to the benzotriazole particle drying device, the contact area of hot air and benzotriazole particles is effectively increased, the contact time of the hot air and the benzotriazole particles is prolonged, the drying effect is remarkably improved, a large amount of time is saved, and the drying efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to a drying device for benzotriazole. Background Art

[0002] The preparation method of benzotriazole usually involves diazotizing o-phenylenediamine to prepare o-aminobenzenediazonium salt, and then immediately cyclizing it in one step to synthesize the crude benzotriazole. The crude benzotriazole is then recrystallized, filtered, and dried to obtain the pure benzotriazole. The purpose of drying is to remove the moisture contained in the benzotriazole particles to ensure the stability and storage of the particles. The drying process needs to be completed with the help of supporting drying equipment. Common drying equipment includes hot air dryers, spray dryers, etc.

[0003] Hot air dryers can be divided into two types: box type and cylinder type according to the moving direction of the material. The single feed amount of the box type hot air dryer is small. Since the benzotriazole particles pass through the hot air box driven by the moving belt, the benzotriazole particles need to be laid flat on the moving belt with a certain thickness. If the thickness is too thick, the drying effect is poor, and the moving speed cannot be too fast, so the drying speed is slow. The single feed amount of the cylinder type hot air dryer is large because the benzotriazole particles fall vertically through the hot air box. However, due to the relatively fast falling speed of the benzotriazole particles, the residence time of the benzotriazole particles in the hot air box is short, resulting in less contact time between the benzotriazole particles and the hot air. Therefore, the drying effect is poor, and it can only reach the dryness requirement after repeated drying, but it consumes a lot of time. Therefore, the drying efficiency is low and needs to be further improved. Summary of the Utility Model

[0004] In view of the above-mentioned status quo of the prior art, the technical problem to be solved by the present utility model is to provide a drying device for benzotriazole that effectively increases the contact area between the hot air and the benzotriazole particles and prolongs the contact time between the hot air and the benzotriazole particles, thereby significantly improving the drying effect, saving a large amount of time, and significantly improving the drying efficiency.

[0005] The technical solution adopted by the present utility model to solve the above technical problem is as follows: A drying device for benzotriazole, characterized in that it includes a feeding section, a drying section, a discharging section, and an air inlet section arranged in sequence from top to bottom;

[0006] The feeding section includes a feeding box, a box cover hermetically fixed at the top opening of the feeding box, and a plurality of partitions vertically fixed between the front and rear inner walls of the feeding box and equally spaced from left to right in sequence;

[0007] An inlet well is formed between the leftmost partition and the left inner wall of the feeding box, between the rightmost partition and the right inner wall of the feeding box, and between any two adjacent partitions;

[0008] Between the leftmost one of the partition plates and the left inner wall of the feed box, between the rightmost one of the partition plates and the right inner wall of the feed box, and between any two adjacent remaining partition plates, a horizontally arranged material supporting plate is also fixedly provided. The front and rear side edges of each material supporting plate are respectively fixed on the front and rear inner walls of the feed box, and a plurality of blanking holes are formed in each material supporting plate;

[0009] The drying section includes a drying tank and a drying pipe horizontally inserted on the left or right side of the drying tank. The vertical cross-sectional shape of the drying tank is an inverted isosceles trapezoid. The top opening of the drying tank is hermetically fixed at the bottom opening of the feed box. The inner end of the drying pipe is closed and extends to the right or left inner wall of the drying tank. A plurality of drying hole combinations are arranged in sequence along the circumferential direction on the upper side of the drying pipe. Each drying hole combination includes a plurality of drying holes arranged at equal intervals from left to right. The acute angle a formed by the central axis of each drying hole and the horizontal direction is greater than 5 degrees;

[0010] The discharging section includes a discharging tank, a discharging chamber fixed on the left or right side of the discharging tank and communicating with the inside of the discharging tank, and a discharging pipe inserted at the bottom of the discharging chamber. The top opening of the discharging tank is hermetically fixed at the bottom opening of the drying tank;

[0011] The air inlet section includes a bottom plate horizontally and hermetically fixed at the bottom opening of the discharging tank and a guiding plate horizontally fixed between the bottom plate and the bottom opening of the discharging tank. The top of the guiding plate is flush with the bottom inner wall of the discharging chamber;

[0012] A plurality of air inlet hoppers are also embedded in the bottom plate and arranged in sequence from left to right. Correspondingly, the guiding plate is provided with the same number of air guiding cavity units. Each air guiding cavity unit is arranged above the top opening of a corresponding air inlet hopper. Each air guiding cavity unit includes a plurality of air guiding cavities. An air guiding hole inclinedly distributed towards the discharging chamber is formed on one inner wall of each air guiding cavity.

[0013] Preferably, a plurality of first guiding units arranged successively from top to bottom and a plurality of second guiding units arranged successively from top to bottom are further fixed inside the drying tank. The plurality of first guiding units and the plurality of second guiding units are distributed at intervals.

[0014] Preferably, the first guiding unit includes two first guiding plates fixed between the left and right inner walls of the drying tank and symmetrically arranged front and rear. The front edge of the front first guiding plate is fixed on the front inner wall of the drying tank, and the rear edge of the rear first guiding plate is fixed on the rear inner wall of the drying tank. A first guiding groove is formed between the adjacent side edges of the two first guiding plates. The first guiding groove is arranged directly below the drying pipe.

[0015] Preferably, the second flow guiding unit includes two second flow guiding plates which are fixed between the inner walls on the left and right sides of the drying tank and are symmetrically arranged front and back. The rear edge of the front second flow guiding plate is fixed to the front edge of the rear second flow guiding plate. A second flow guiding groove is formed between the front edge of the front second flow guiding plate and the inner wall of the front side of the drying tank, and between the rear edge of the rear second flow guiding plate and the inner wall of the rear side of the drying tank.

[0016] Preferably, a plurality of rectangular feeding frames are embedded in the box cover and are distributed in sequence from left to right. The number of the rectangular feeding frames is equal to the number of the feeding wells. Each rectangular feeding frame is arranged above the top opening of a corresponding feeding well, and a detachable rectangular cover plate is fixed at the end opening of each rectangular feeding frame.

[0017] Preferably, a plurality of exhaust pipes are inserted into the front side or the rear side of the feeding box and are arranged in sequence from left to right. The number of the exhaust pipes is equal to the number of the feeding wells. The root opening of each exhaust pipe is communicated with the interior of a corresponding feeding well and is located above the supporting plate.

[0018] Preferably, the discharging section further includes a regulating valve arranged at the connection between the discharging chamber and the discharging tank. The regulating valve includes a valve plate, a first pin shaft and a second pin shaft which are horizontally fixed at the middle parts of the front and back sides of the valve plate and are concentrically arranged. The end parts of the first pin shaft and the second pin shaft are respectively rotatably inserted into the front and back sides of the discharging chamber. The regulating valve further includes a rocking handle fixed at the end of the first pin shaft, a sector-shaped positioning piece fixed on the outer wall of the rear side of the discharging chamber and concentrically arranged with the second pin shaft, and a sector-shaped adjusting piece fixed on the second pin shaft and concentrically arranged behind the sector-shaped positioning piece.

[0019] Preferably, a plurality of positioning holes are formed in the sector-shaped positioning piece and are evenly distributed at equal angles along the circumferential direction. Correspondingly, a plurality of adjusting holes are formed in the sector-shaped adjusting piece and are evenly distributed at equal angles along the circumferential direction. The angle between any two adjacent adjusting holes is equal to the angle between any two adjacent positioning holes, and the linear distance between the center of any one adjusting hole and the central axis of the first pin shaft is equal to the linear distance between the center of any one positioning hole and the central axis of the first pin shaft.

[0020] Preferably, a first air inlet pipe is inserted into the bottom of each air inlet hopper, and a second air inlet pipe is inserted into one side of each air inlet hopper.

[0021] Preferably, a plurality of cleaning pipes are further arranged inside each of the feeding wells, which are sequentially distributed from left to right and are all located above the material supporting plate. One end of each cleaning pipe is closed, and the other end of each cleaning pipe is sealed through the front side or the rear side of the feeding box and extends to the outside of the feeding box. A plurality of cleaning holes are formed in the lower side of each cleaning pipe and are sequentially distributed along the length direction of the cleaning pipe.

[0022] Compared with the prior art, the advantages of the present utility model are as follows: the present utility model enables the benzotriazole particles to fall vertically downward and sequentially pass through the feeding section, the drying section and the discharging section to ensure a relatively large single feeding amount, and by means of the hot air introduced into the drying section blowing upward against the falling benzotriazole particles, each strand of benzotriazole particles is dispersed and the falling speed of the benzotriazole particles is delayed. Moreover, by means of a plurality of first guiding units and a plurality of second guiding units arranged inside the drying tank, the residence time of the benzotriazole particles in the drying section is further prolonged, so as to effectively increase the contact area between the hot air and the benzotriazole particles and extend the contact time between the hot air and the benzotriazole particles, thereby significantly improving the drying effect. The dryness requirement can be achieved only through one drying process, thus saving a large amount of time and significantly improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the left front side exploded structure diagram of the present utility model;

[0024] Figure 2 is the left side view sectional structure diagram of the drying section of the present utility model;

[0025] Figure 3 is the partial enlarged structure diagram of the present utility model at A;

[0026] Figure 4 is the right rear side exploded structure diagram of the regulating valve of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0028] To keep the following description of the embodiments of the present utility model clear and concise, the detailed descriptions of known functions and known components are omitted in the present utility model.

[0029] As Figures 1 to 4 shown, a drying device for benzotriazole includes a feeding section 1, a drying section 2, a discharging section 3, and an air inlet section 4 which are arranged successively from top to bottom;

[0030] The feeding section 1 includes a feeding box 11, a box cover 14 hermetically fixed at the top opening of the feeding box 11, and a plurality of partition plates 12 vertically fixed between the front and rear inner walls of the feeding box 11 and equally spaced from left to right in sequence;

[0031] An inlet well 17 is formed between the leftmost partition plate 12 and the left inner wall of the feeding box 11, between the rightmost partition plate 12 and the right inner wall of the feeding box 11, and between any two adjacent partition plates 12. A horizontally arranged supporting plate 13 is also fixed between the leftmost partition plate 12 and the left inner wall of the feeding box 11, between the rightmost partition plate 12 and the right inner wall of the feeding box 11, and between any two adjacent partition plates 12. The front and rear edges of each supporting plate 13 are respectively fixed on the front and rear inner walls of the feeding box 11, and a plurality of material dropping holes 131 are formed in each supporting plate 13;

[0032] The drying section 2 includes a drying tank 21 and a drying pipe 22 horizontally inserted into the left or right side of the drying tank 21. The vertical cross-sectional shape of the drying tank 21 is an inverted isosceles trapezoid. The top opening of the drying tank 21 is hermetically fixed at the bottom opening of the feeding box 11. The inner end of the drying pipe 22 is closed and extends to the right or left inner wall of the drying tank 21. A plurality of drying hole combinations are arranged in sequence along the circumferential direction on the upper side of the drying pipe 22. Each drying hole combination includes a plurality of drying holes 221 equally spaced from left to right in sequence. The acute angle a formed by the central axis of each drying hole 221 and the horizontal direction is greater than 5 degrees;

[0033] The discharging section 3 includes a discharging trough 31, a discharging chamber 32 fixed on the left or right side of the discharging trough 31 and communicating with the inside of the discharging trough 31, and a discharging pipe 33 inserted into the bottom of the discharging chamber 32. The top opening of the discharging trough 31 is hermetically fixed at the bottom opening of the drying tank 21;

[0034] The air inlet section 4 includes a bottom plate 41 horizontally and hermetically fixed at the bottom opening of the discharging trough 31 and a guiding plate 44 horizontally fixed between the bottom plate 41 and the bottom opening of the discharging trough 31. The top of the guiding plate 44 is flush with the bottom inner wall of the discharging chamber 32;

[0035] A plurality of air inlet hoppers 42 are also embedded in the bottom plate 41 and are distributed in sequence from left to right. Correspondingly, the material guiding plate 44 is provided with the same number of air guiding cavity units. Each air guiding cavity unit is arranged above the top opening of a corresponding air inlet hopper 42. The air guiding cavity unit includes a plurality of air guiding cavities 441. An air guiding hole 442 that is inclined and distributed towards the discharging bin 32 is formed in the inner wall of one side of each air guiding cavity 441.

[0036] A number of first guiding units arranged in sequence from top to bottom and a number of second guiding units arranged in sequence from top to bottom are also fixed inside the drying tank 21. The number of the first guiding units and the number of the second guiding units are distributed at intervals.

[0037] The first guiding unit includes two first guiding plates 23 that are fixed between the left and right inner walls of the drying tank 21 and are symmetrically arranged front and back. The front edge of the front first guiding plate 23 is fixed on the front inner wall of the drying tank 21, and the rear edge of the rear first guiding plate 23 is fixed on the rear inner wall of the drying tank 21. A first guiding groove 25 is formed between the adjacent side edges of the two first guiding plates 23. The first guiding groove 25 is arranged directly below the drying pipe 22.

[0038] The second guiding unit includes two second guiding plates 24 that are fixed between the left and right inner walls of the drying tank 21 and are symmetrically arranged front and back. The rear edge of the front second guiding plate 24 is fixed to the front edge of the rear second guiding plate 24. A second guiding groove 26 is formed between the front edge of the front second guiding plate 24 and the front inner wall of the drying tank 21 and between the rear edge of the rear second guiding plate 24 and the rear inner wall of the drying tank 21.

[0039] A plurality of rectangular feeding frames 15 are also embedded in the box cover 14 and are distributed in sequence from left to right. The number of the rectangular feeding frames 15 is equal to the number of the feeding wells 17. Each rectangular feeding frame 15 is arranged above the top opening of a corresponding feeding well 17. A detachable rectangular cover plate 16 is also fixed at the end opening of each rectangular feeding frame 15.

[0040] A plurality of exhaust pipes 18 arranged in sequence from left to right are also inserted into the front side or the rear side of the feeding box 11. The number of the exhaust pipes 18 is equal to the number of the feeding wells 17. The root opening of each exhaust pipe 18 is communicated with the inside of a corresponding feeding well 17 and is located above the supporting plate 13.

[0041] The discharging section 3 further includes a regulating valve provided at the communication portion between the discharging chamber 32 and the discharging chute 31. The regulating valve includes a valve plate 34, and a first pin shaft 35 and a second pin shaft 36 that are horizontally fixed to the middle portions of the front and rear sides of the valve plate 34 respectively and are concentrically arranged. The end portions of the first pin shaft 35 and the second pin shaft 36 are respectively rotatably inserted and connected to the front and rear sides of the discharging chamber 32.

[0042] The regulating valve further includes a rocker handle 37 fixed to the end portion of the first pin shaft 35, a sector-shaped positioning piece 38 fixed to the outer wall of the rear side of the discharging chamber 32 and concentrically arranged with the second pin shaft 36, and a sector-shaped adjusting piece 39 fixed to the second pin shaft 36 and concentrically arranged behind the sector-shaped positioning piece 38.

[0043] A plurality of positioning holes 381 are formed in the sector-shaped positioning piece 38 and are evenly distributed at equal angles in the circumferential direction. Correspondingly, a plurality of adjusting holes 391 are formed in the sector-shaped adjusting piece 39 and are evenly distributed at equal angles in the circumferential direction. The angle between any two adjacent adjusting holes 391 is equal to the angle between any two adjacent positioning holes 381, and the linear distance between the center of any one adjusting hole 391 and the central axis of the first pin shaft 35 is equal to the linear distance between the center of any one positioning hole 381 and the central axis of the first pin shaft 35.

[0044] A first air inlet pipe 43 is inserted at the bottom of each air inlet hopper 42, and a second air inlet pipe 45 is inserted at one side of each air inlet hopper 42.

[0045] A number of first inspection holes 311 are formed in the outer wall of the front side or the rear side of the discharging chute 31, and a second inspection hole 321 is formed in the outer wall of one side of the discharging chamber 32.

[0046] A number of cleaning pipes 19 are provided inside each feeding well 17 and are sequentially distributed from left to right and are all located above the supporting plates 13. One end of the cleaning pipe 19 is closed, and the other end of the cleaning pipe 19 is hermetically passed through the front side or the rear side of the feeding box 11 and extends to the outside of the feeding box 11. A plurality of cleaning holes 191 are formed in the lower side of the cleaning pipe 19 and are sequentially distributed along the length direction of the cleaning pipe 19.

[0047] Working principle:

[0048] According to the size of the required processing amount, open the corresponding number of rectangular covers 16, and then feed the water-containing benzotriazole particles into the inner part of the top opening of each feeding well 17. After that, the water-containing benzotriazole particles will fall into each feeding well 17 through the plurality of material dropping holes 131 in each supporting plate 13, and then enter the inside of the drying tank 21 through the bottom opening of the feeding box 11.

[0049] Next, hot air is introduced into the interior of the drying pipe 22 through the outer end of the drying pipe 22, and then blown upward through each drying hole 221, and then comes into contact with the falling benzotriazole particles, thereby removing the moisture in the benzotriazole particles, dispersing each strand of benzotriazole particles, and delaying the falling speed of the benzotriazole particles.

[0050] Next, the benzotriazole particles that enter the interior of the drying tank 21 will first fall to the tops of the two first guide plates 23 in the uppermost first guide unit, and then slide along the slopes of the first guide plates 23 to the first guide grooves 25, and then fall through the first guide grooves 25 to the tops of the two second guide plates 24 in a second guide unit below it, and then slide along the slopes of the two second guide plates 24 to the two second guide grooves 26 respectively, and then fall to the tops of the two first guide plates 23 in a first guide unit below the two second guide grooves 26, and so on. The advantage of this design is that it can greatly extend the residence time of the benzotriazole particles in the drying tank 21, and thus there is sufficient time to dry the benzotriazole particles.

[0051] Next, the dried benzotriazole particles enter the interior of the discharge tank 31 through the bottom opening of the drying tank 21, and then fall to the top of the guide plate 44; thereafter, according to needs, hot air is introduced into the corresponding number of first air inlet pipes 43 and the second air inlet pipe 45 is closed, and the hot air will enter the corresponding air inlet hoppers 42 and blow upward to the guide plate 44. Since each air guide hole 442 is inclined and distributed in the direction of the discharge chamber 32, the hot air passing through each air guide hole 442 will blow the benzotriazole particles falling on the top of the guide plate 44 in the direction of the discharge chamber 32, and thus the benzotriazole particles gradually accumulate at the valve plate 34.

[0052] Hold the crank 37 by hand and rotate it to drive the valve plate 34 to rotate by means of the first pin shaft 35 and the second pin shaft 36, and then the lower edge of the valve plate 34 swings toward the interior of the discharge chamber 32, so that the accumulated benzotriazole particles enter the interior of the discharge chamber 32, and then are output outward through the discharge pipe 33 for collection.

[0053] When it is necessary to maintain the angle of the valve plate 34, a plug with an outer diameter that matches both the adjustment hole 391 and the positioning hole 381 can be taken, and one end of it is passed through any one of the adjustment holes 391 on the sector adjustment piece 39 and inserted into the positioning hole 381 on the sector positioning piece 38 that is closest to the above-mentioned sector adjustment piece 39, and then the sector adjustment piece 39 and the sector positioning piece 38 are fixed to each other, thereby preventing the second pin shaft 36 from rotating to complete the positioning of the valve plate 34.

[0054] The hot air entering the inside of the discharge chute 31 and the drying chute 21 will all enter the feed box 11 upward, and then be discharged outward through each exhaust duct 18 after passing through each blanking hole 131.

[0055] In the utility model, the benzotriazole particles fall vertically downward and sequentially pass through the feeding section 1, the drying section 2 and the discharging section 3 to ensure a large single feeding amount. The hot air introduced into the drying section 2 blows upward against the falling benzotriazole particles, thereby dispersing each strand of benzotriazole particles and delaying the falling speed of the benzotriazole particles. Moreover, a plurality of first guiding units and a plurality of second guiding units provided inside the drying chute 21 are also used to further extend the residence time of the benzotriazole particles in the drying section 2, so as to effectively increase the contact area between the hot air and the benzotriazole particles and extend the contact time between the hot air and the benzotriazole particles, thereby significantly improving the drying effect. The dryness requirement can be achieved only through one drying process, thus saving a large amount of time and significantly improving the drying efficiency.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drying device for benzotriazole, characterized in that, It includes the feeding section, drying section, discharging section and air inlet section arranged in sequence from top to bottom; The feeding section includes a feeding box, a box cover sealed and fixed at the top opening of the feeding box, and a plurality of partitions vertically fixed between the front and rear inner walls of the feeding box and distributed at equal intervals from left to right; A feed well is formed between the leftmost partition and the left inner wall of the feed box, between the rightmost partition and the right inner wall of the feed box, and between any two adjacent partitions. A transversely arranged supporting plate is fixed between the leftmost partition and the left inner wall of the feed box, between the rightmost partition and the right inner wall of the feed box, and between any two adjacent partitions. The front and rear edges of each supporting plate are respectively fixed to the front and rear inner walls of the feed box, and each supporting plate is provided with a plurality of blanking holes; The drying section includes a drying tank and a drying pipe laterally plugged into the left or right side of the drying tank, the vertical cross-section of the drying tank is an inverted isosceles trapezoid, the top opening of the drying tank is sealed and fixed to the bottom opening of the feed box, the inner end of the drying pipe is closed and extends to the right or left inner wall of the drying tank, the upper side of the drying pipe is provided with a plurality of drying hole combinations distributed in sequence along the circumferential direction, the drying hole combination includes a plurality of drying holes arranged in sequence at equal intervals from left to right, and the acute angle a between the central axis of each drying hole and the horizontal direction is greater than 5 degrees; The discharging section includes a discharging trough, a discharging cabin fixed on the left or right side of the discharging trough and connected to the inside of the discharging trough, and a discharging pipe plugged into the bottom of the discharging cabin. The top opening of the discharging trough is sealed and fixed to the bottom opening of the drying tank. The air inlet section includes a bottom plate transversely and sealedly fixed at the bottom opening of the discharge chute and a guide plate transversely fixed between the bottom plate and the bottom opening of the discharge chute, wherein the top of the guide plate is flush with the bottom inner wall of the discharge chamber; The bottom plate is also embedded with a plurality of air inlet scoops distributed in sequence from left to right. Correspondingly, the material guide plate is provided with the same number of air guide cavity units. Each of the air guide cavity units is arranged above the top opening of a corresponding air inlet scoop. The air guide cavity unit includes a plurality of air guide cavities. An air guide hole inclined toward the discharge bin is provided on the inner wall of one side of each air guide cavity.

2. A drying device for benzotriazole according to claim 1, characterized in that, A plurality of first guide units and a plurality of second guide units are fixed in sequence from top to bottom in the drying tank, and the plurality of first guide units and the plurality of second guide units are spaced apart from each other.

3. The drying device for benzotriazole according to claim 2, characterized in that, The first guide unit includes two first guide plates fixed between the left and right inner walls of the drying tank and symmetrically arranged front to back, the front edge of one of the first guide plates on the front side is fixed on the front inner wall of the drying tank, and the rear edge of one of the first guide plates on the rear side is fixed on the rear inner wall of the drying tank. A first guide groove is formed between the adjacent side edges of the two first guide plates, and the first guide groove is arranged directly below the drying pipe.

4. A drying device for benzotriazole according to claim 2, characterized in that, The second diversion unit includes two second diversion plates fixed between the left and right inner walls of the drying tank and symmetrically arranged front and back. The rear edge of the front second diversion plate is fixed to the front edge of the rear second diversion plate. A second diversion groove is formed between the front edge of the front second diversion plate and the front inner wall of the drying tank and between the rear edge of the rear second diversion plate and the rear inner wall of the drying tank.

5. The drying device for benzotriazole according to claim 1, characterized in that, A plurality of rectangular feeding frames are sequentially distributed from left to right and embedded in the box cover. The number of the rectangular feeding frames is equal to the number of the feeding wells. Each rectangular feeding frame is arranged above the top opening of a corresponding feeding well, and a detachable rectangular cover plate is fixed at the end opening of each rectangular feeding frame.

6. A drying device for benzotriazole according to claim 1, characterized in that: A plurality of exhaust pipes are sequentially arranged from left to right and inserted into the front or rear side of the feeding box. The number of the exhaust pipes is equal to the number of the feeding wells. The root opening of each exhaust pipe is communicated with the inside of a corresponding feeding well and is located above the material supporting plate.

7. The drying device for benzotriazole according to claim 1, characterized in that: The discharging section further includes a regulating valve arranged at the connection between the discharging chamber and the discharging tank. The regulating valve includes a valve plate, a first pin shaft and a second pin shaft which are horizontally fixed at the middle parts of the front and rear sides of the valve plate and are concentrically arranged. The end parts of the first pin shaft and the second pin shaft are respectively rotatably inserted and connected to the front and rear sides of the discharging chamber. The regulating valve further includes a rocking handle fixed at the end part of the first pin shaft, a sector-shaped positioning piece fixed on the outer wall at the rear side of the discharging chamber and concentrically arranged with the second pin shaft, and a sector-shaped adjusting piece fixed on the second pin shaft and concentrically arranged behind the sector-shaped positioning piece.

8. A drying device for benzotriazole according to claim 7, characterized in that, A plurality of positioning holes are evenly distributed at equal angles along the circumferential direction in the sector-shaped positioning piece. Correspondingly, a plurality of adjusting holes are evenly distributed at equal angles along the circumferential direction in the sector-shaped adjusting piece. The angle between any two adjacent adjusting holes is equal to the angle between any two adjacent positioning holes, and the linear distance between the center of any adjusting hole and the central axis of the first pin shaft is equal to the linear distance between the center of any positioning hole and the central axis of the first pin shaft.

9. A drying device for benzotriazole according to claim 1, characterized in that, A first air inlet pipe is inserted at the bottom of each air inlet hopper, and a second air inlet pipe is inserted at one side of each air inlet hopper.

10. The drying device for benzotriazole according to claim 1, characterized in that: A plurality of cleaning pipes are sequentially distributed from left to right and arranged inside each feeding well and are located above the material supporting plate. One end of each cleaning pipe is closed, and the other end of each cleaning pipe is hermetically penetrated through the front or rear side of the feeding box and extends to the outside of the feeding box. A plurality of cleaning holes are arranged on the lower side of each cleaning pipe and are sequentially distributed along the length direction of the cleaning pipe.

Images