Continuous drying system for wheat pentosan

Abstract

The utility model relates to the technical field of drying equipment, in particular to a continuous drying system for wheat pentosan. According to the pentosan drying device, moisture in a pentosan solid-liquid mixture can be pretreated, the technological process is simplified, the occupied area of equipment is reduced, and the pentosan drying treatment efficiency is further improved; comprising a gravity extrusion dehydrator, a spiral conveying extrusion dehydrator and a crushing and drying all-in-one machine which are connected in sequence, the gravity extrusion dehydrator comprises a rack, an open box body installed on the rack, a belt type conveying mechanism installed in the open box body and a first pressing dehydration box; the spiral conveying and extruding dehydrator comprises a shell, an auger rotationally installed in the shell, a first driving assembly providing power for rotation of the auger, a feeding hopper communicating with the interior of the shell and a vacuumizing box communicating with the interior of the shell. The smashing and drying all-in-one machine comprises a machine shell, a dispersing and stirring cutter rotationally installed in the machine shell and a second driving assembly installed on the machine shell and in transmission connection with the dispersing and stirring cutter.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to a continuous drying system for wheat pentosan. Background Art

[0002] As we all know, pentosan is a non-starch polysaccharide. In addition to containing a large amount of pentose polymers, it may also contain a certain amount of hexose, phenolic substances and heteropolysaccharides. Pentosan is mostly extracted from wheat; the pentosan extracted from wheat is in the form of a liquid-solid mixture. During the production process, the solid component pentosan needs to be dried and solidified.

[0003] For example, a Chinese utility model patent discloses a drying system for pentosan (publication number CN204923785U), including a pentosan storage tank, a mixer, a drum dryer, a pulverizer, and a tube bundle dryer. The pentosan storage tank is connected to the mixer through a pipeline, and the mixer outlet is connected to the drum dryer through an auger conveyor. The drum dryer outlet is connected to the pulverizer feed port by an auger conveyor. The tube bundle dryer feed port is provided with a feeder, and the pulverizer outlet is connected to the feeder. It is dried by drum, small lumps are crushed, and then tube bundle drying is performed. The two dryings not only speed up the material drying speed, but also prevent the material from sticking, increase the pentosan content, and obtain a higher pentosan dry basis content.

[0004] However, when the inventors implemented this device, they found the following defects: when processing pentosan with high moisture content, the drying efficiency of pentosan is low due to the high moisture content; and the equipment in the above system occupies a large area, the process flow is complicated, and there are certain limitations in use. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a continuous drying system for wheat pentosan which can pretreat the moisture in a pentosan solid-liquid mixture, simplify the process flow, reduce the equipment footprint, and further improve the pentosan drying efficiency.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a continuous drying system for wheat pentosan, comprising a gravity extrusion dehydrator, a spiral conveying extrusion dehydrator and a crushing and drying integrated machine connected in sequence, the gravity extrusion dehydrator comprising a frame, an open box body installed on the frame, a belt conveyor mechanism installed in the open box body and a first pressing and dehydrating box, a feed port is provided at the open box body, the belt conveyor mechanism is arranged upwardly tilted away from the feed port at one end, and a water collecting box is provided at the bottom of the frame near the feed port; the spiral conveying extrusion dehydrator comprises a shell, an auger rotatably installed in the shell, a first drive assembly providing power for the rotation of the auger, and a feed hopper connected to the inside of the shell. and a vacuum box communicated with the interior of the shell, wherein a vacuum pump connected to the interior of the vacuum box is installed on the vacuum box, the feed hopper is located below the discharge end of the belt conveyor mechanism, and the discharge end of the spiral conveying extrusion dehydrator is arranged to be inclined upward; the integrated crushing and drying machine includes a casing, a dispersing agitator rotatably installed in the casing, and a second drive assembly installed on the casing and transmission-connected to the dispersing agitator; a discharge pipe communicated with the interior of the casing is provided at the bottom of the casing, a hollow spiral conveying shaft is rotatably installed in the discharge pipe, and an electric heating rod is built into the hollow spiral conveying shaft; further, the belt conveyor mechanism includes a driving roller rotatably installed on the frame and a conveyor belt sleeved on the driving roller.

[0009] Preferably, a second pressing and dehydrating box is installed on the frame, and a scraper in close contact with the belt conveyor mechanism is installed on the frame.

[0010] Preferably, the frame is equipped with a plurality of scraper pipes which are arranged alternately and in contact with the belt conveyor mechanism, and the scraper pipes are located between the first pressing and dehydrating box and the second pressing and dehydrating box; further, the scraper pipes are connected to an external suction device; and a spike portion is provided at the bottom of the scraper pipe.

[0011] Preferably, two rotating shafts arranged side by side are rotatably installed in the feed hopper and the vacuum box, an extrusion plate is installed on the rotating shaft, and the rotating shaft is transmission connected to the auger; further, the rotating shaft is synchronously transmission connected to the auger through a gear assembly.

[0012] Preferably, it also includes a dispersion suction fan, the input end of which is connected to the inside of the discharge pipe, and the dispersion suction fan is transmission-connected to the dispersion agitator; a discharge pipe is provided at the bottom of the dispersion suction fan, and an exhaust pipe is provided at the top of the dispersion suction fan; further, the dispersion suction fan and the dispersion agitator are synchronously transmission-connected through a transmission belt.

[0013] Preferably, a seepage header is installed at the bottom of the frame.

[0014] Preferably, the first pressing and dehydrating box is provided with a plurality of water-permeable holes penetrating from top to bottom, and the first pressing and dehydrating box is provided with a drain outlet; further, the first pressing and dehydrating box is arranged parallel to the end face of the conveyor belt on the belt conveyor mechanism, and the drain outlet is located above the water collecting tank.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a continuous drying system for wheat pentosan, which has the following beneficial effects: in the continuous drying system for wheat pentosan, the pentosan solid-liquid mixture enters into the open box through the feed port and falls to the belt conveyor mechanism, the belt conveyor mechanism drives the solid-liquid mixture to move, and under the action of the first pressing and dehydrating box, the pentosan solid-liquid mixture is spread on the conveyor belt on the belt conveyor mechanism, and the water therein enters into the water collecting box under the action of gravity, the belt conveyor mechanism performs preliminary dehydration on the pentosan solid-liquid mixture during the transportation process, and the pentosan after preliminary dehydration enters into the shell, and during the extrusion and transportation process of the auger, the pentosan The solid-liquid mixture is further squeezed and dehydrated, and this part of the water enters the vacuum box, and is further processed by the vacuum pump. The squeezed pentosan enters the casing, and under the action of the dispersing agitator, the pentosan is broken into granules. The granular pentosan enters the discharge pipe and is transported by the hollow spiral conveyor shaft. The electric heating rod can heat the hollow spiral conveyor shaft to increase the temperature of the granular pentosan, promote the further volatilization of the water in the pentosan, realize the continuous drying treatment of the pentosan, pre-treat the water in the pentosan solid-liquid mixture, simplify the process flow, reduce the equipment footprint, and further improve the drying efficiency of the pentosan. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 3 The utility model Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0020] Figure 4 The utility model Figure 3 Schematic diagram of the cross-section structure at BB in the middle;

[0021] Markings in the attached drawings: 1. frame; 2. open box; 3. belt conveyor mechanism; 4. first pressing and dehydrating box; 5. feed inlet; 6. water collecting box; 7. shell; 8. auger; 9. first drive assembly; 10. feed hopper; 11. vacuum box; 12. vacuum pump; 13. casing; 14. dispersion agitator; 15. second drive assembly; 16. discharge pipe; 17. hollow spiral conveyor shaft; 18. electric heating rod; 19. second pressing and dehydrating box; 20. scraper; 21. scraper pipe; 22. rotating shaft; 23. extrusion plate; 24. dispersion suction fan; 25. discharge pipe; 26. exhaust pipe; 27. water seepage collecting box; 28. water permeable hole; 29. ​​drain outlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4The utility model discloses a continuous drying system for wheat pentosan, comprising a gravity extrusion dehydrator, a spiral conveying extrusion dehydrator and a crushing and drying integrated machine connected in sequence. The gravity extrusion dehydrator comprises a frame 1, an open box body 2 installed on the frame 1, a belt conveyor mechanism 3 installed in the open box body 2 and a first pressing and dehydrating box 4, a feed port 5 is provided at the open box body 2, the belt conveyor mechanism 3 is arranged upwardly inclined away from the feed port 5, and a water collecting box 6 is provided at the bottom of the frame 1 near the feed port 5; the spiral conveying extrusion dehydrator comprises a shell 7, an auger 8 rotatably installed in the shell 7, a first driving assembly 9 for providing power for the rotation of the auger 8, a feed hopper 10 communicated with the inside of the shell 7, and a vacuum box 11 communicated with the inside of the shell 7, a vacuum pump 12 communicated with the inside of the vacuum box 11 is installed at the vacuum box 11, the feed hopper 10 is located below the discharge end of the belt conveyor mechanism 3, and the spiral conveyor The discharge end of the extrusion dehydrator is arranged to be tilted upward; the integrated crushing and drying machine includes a casing 13, a dispersing agitator 14 rotatably installed in the casing 13, and a second driving component 15 installed on the casing 13 and transmission-connected to the dispersing agitator 14; a discharge pipe 16 communicating with the interior of the casing 13 is provided at the bottom of the casing 13, and a hollow screw conveyor shaft 17 is rotatably installed in the discharge pipe 16, and an electric heating rod 18 is built in the hollow screw conveyor shaft 17; further, the belt conveyor mechanism 3 includes a driving roller rotatably installed on the frame 1 and a conveyor belt sleeved on the driving roller; in this embodiment, the moisture content of pentosan can be reduced to less than 10% by the gravity extrusion dehydrator and the screw conveying extrusion dehydrator. Compared with the traditional mixer, drum dryer, crusher, and tube bundle dryer system processing, the amount of equipment is reduced, and the equipment of each process is scientifically and orderly connected, which can effectively improve the drying efficiency and effect of pentosan.

[0024] Specifically, a second pressing and dehydrating box 19 is installed on the frame 1, and a scraper 20 in close contact with the belt conveyor mechanism 3 is installed on the frame 1; the bottom of the second pressing and dehydrating box 19 is placed in a horizontal state, and the bottom of the second pressing and dehydrating box 19 and the conveyor belt on the belt conveyor mechanism 3 are arranged at an angle of 10°. During the conveying process of pentosan by the belt conveyor mechanism 3, the pentosan is further squeezed under the action of the second pressing and dehydrating box 19, thereby further reducing the water content in the pentosan and reducing the burden for subsequent drying treatment.

[0025] Specifically, the frame 1 is provided with a plurality of scraper tubes 21 which are arranged in an alternating manner and in contact with the belt conveyor mechanism 3, and the scraper tubes 21 are located between the first pressing and dehydrating box 4 and the second pressing and dehydrating box 19; further, the scraper tubes 21 are connected with an external suction device; a spike portion is provided at the bottom of the scraper tubes 21; the pentosan spread on the belt conveyor mechanism 3 can be scraped up by the scraper tubes 21, so that the pentosan is in a dispersed state again, so that it can be subsequently subjected to a secondary dehydration treatment by the second pressing and dehydrating box 19, thereby increasing the extrusion pressure between the second pressing and dehydrating box 19 and the belt conveyor mechanism 3, so as to further improve the dehydration effect of the pentosan.

[0026] Specifically, two rotating shafts 22 arranged side by side are rotatably installed in the feed hopper 10 and the vacuum box 11, and an extrusion plate 23 is installed on the rotating shaft 22, and the rotating shaft 22 is connected to the auger 8 in transmission; further, the rotating shaft 22 is synchronously connected to the auger 8 in transmission through a gear assembly; during the rotation of the auger 8, the rotating shaft 22 drives the extrusion plate 23 to rotate, and under the action of the extrusion plate 23, the pentosan is squeezed into the shell 7, so as to prevent too much pentosan from entering the vacuum box 11 during the transportation process of the auger 8, and at the same time improve the feeding smoothness of the pentosan in the feed hopper 10.

[0027] Specifically, it also includes a dispersion suction fan 24, the input end of the dispersion suction fan 24 is connected to the inside of the discharge pipe 16, and the dispersion suction fan 24 is connected to the dispersion agitator 14 by transmission; a discharge pipe 25 is provided at the bottom of the dispersion suction fan 24, and an exhaust pipe 26 is provided at the upper part of the dispersion suction fan 24; further, the dispersion suction fan 24 and the dispersion agitator 14 are synchronously connected by a transmission belt; while the dispersion agitator 14 rotates, the dispersion suction fan 24 runs synchronously, and the dispersion suction fan 24 sucks the heated pentosan into the inside, and under the action of centrifugal force and the gravity of the pentosan itself, the pentosan is discharged through the discharge pipe 25, and the gaseous water is discharged through the exhaust pipe 26, thereby further reducing the moisture content of the pentosan to meet the drying requirements of the pentosan.

[0028] Specifically, a seepage collection box 27 is installed at the bottom of the frame 1; further, the conveyor belt on the belt conveyor mechanism 3 is preferably a filter-type conveyor belt with infiltration holes. Under the squeezing action of the first squeezing and dehydrating box 4 and the second squeezing and dehydrating box 19, part of the water flows downward along the conveyor belt, and part of the water falls into the seepage collection box 27 through the infiltration holes. This part of water is collected by the seepage collection box 27 to reduce the dripping of squeezed waste water.

[0029] Specifically, the first pressing and dehydrating box 4 is provided with a plurality of water-permeable holes 28 penetrating from top to bottom, and the first pressing and dehydrating box 4 is provided with a drain port 29; further, the first pressing and dehydrating box 4 is arranged parallel to the end face of the conveyor belt on the belt conveying mechanism 3, and the drain port 29 is located above the water collecting box 6; during the squeezing process of pentosan in the first pressing and dehydrating box 4, part of the water enters into the first pressing and dehydrating box 4 through the water-permeable holes 28, and flows into the water collecting box 6 through the drain port 29, thereby further improving the dehydration effect of the pentosan.

[0030] When in use, the pentosan solid-liquid mixture enters the open box body 2 through the feed port 5 and falls to the belt conveyor mechanism 3. The belt conveyor mechanism 3 drives the solid-liquid mixture to move. Under the action of the first squeezing and dehydrating box 4, the pentosan solid-liquid mixture is spread on the conveyor belt on the belt conveyor mechanism 3, and the water therein enters the water collecting box 6 under the action of gravity. The belt conveyor mechanism 3 performs preliminary dehydration on the pentosan solid-liquid mixture during transportation. The pentosan after preliminary dehydration enters the shell 7. During the extrusion and transportation process of the auger 8, the pentosan solid-liquid mixture is further squeezed and dehydrated. This part of the water enters the vacuum box 11, and this part of the water is further dehydrated by the vacuum pump 12. The extruded pentosan enters the casing 13, and under the action of the dispersing blade 14, the pentosan is broken into granules. The granular pentosan enters the discharge pipe 16 and is transported through the hollow screw conveyor shaft 17, and the electric heating rod 18 can heat the hollow screw conveyor shaft 17 to increase the temperature of the granular pentosan and promote the further volatilization of the water in the pentosan. While the dispersing blade 14 rotates, the dispersing suction fan 24 runs synchronously, and the dispersing suction fan 24 sucks the heated pentosan into the interior. Under the action of centrifugal force and the gravity of the pentosan itself, the pentosan is discharged through the discharge pipe 25, and the gaseous water is discharged through the exhaust pipe 26, thereby realizing the continuous drying treatment of the pentosan.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A continuous drying system for wheat pentosan, characterized in that: It includes a gravity extrusion dehydrator, a screw conveying extrusion dehydrator and a crushing and drying integrated machine connected in sequence; The gravity squeezing dehydrator comprises a frame (1), an open box (2) mounted on the frame (1), a belt conveyor mechanism (3) mounted in the open box (2), and a first squeezing dehydration box (4); a feed port (5) is provided at the open box (2); an end of the belt conveyor mechanism (3) away from the feed port (5) is arranged to tilt upward; a water collecting box (6) is provided at the bottom of the frame (1) near the feed port (5); The screw conveying extrusion dehydrator comprises a housing (7), an auger (8) rotatably mounted in the housing (7), a first drive assembly (9) providing power for the rotation of the auger (8), a feed hopper (10) communicating with the interior of the housing (7), and a vacuum box (11) communicating with the interior of the housing (7), wherein a vacuum pump (12) communicating with the interior of the vacuum box (11) is installed at the vacuum box (11), the feed hopper (10) is located below the discharge end of the belt conveyor mechanism (3), and the discharge end of the screw conveying extrusion dehydrator is arranged to be inclined upward; The integrated crushing and drying machine comprises a casing (13), a dispersing and stirring blade (14) rotatably mounted in the casing (13), and a second driving assembly (15) mounted on the casing (13) and transmission-connected to the dispersing and stirring blade (14); a discharge pipe (16) communicating with the interior of the casing (13) is provided at the bottom of the casing (13), a hollow screw conveying shaft (17) is rotatably mounted in the discharge pipe (16), and an electric heating rod (18) is built into the hollow screw conveying shaft (17).

2. The continuous drying system of wheat pentosan according to claim 1, characterized in that: A second pressing and dehydrating box (19) is installed on the frame (1), and a scraper (20) in close contact with the belt conveyor mechanism (3) is installed on the frame (1).

3. The continuous drying system of wheat pentosan according to claim 2, characterized in that: The frame (1) is provided with a plurality of scraper pipes (21) arranged in a staggered manner and in contact with the belt conveyor mechanism (3); the scraper pipes (21) are located between the first pressing and dehydrating box (4) and the second pressing and dehydrating box (19).

4. The continuous drying system for wheat pentosan according to claim 3, characterized in that: Two rotating shafts (22) arranged side by side are rotatably installed in the feed hopper (10) and the vacuum box (11), and a squeezing plate (23) is installed on the rotating shaft (22). The rotating shaft (22) is drivingly connected to the auger (8).

5. The continuous drying system for wheat pentosan according to claim 4, characterized in that: It also comprises a dispersion suction fan (24), the input end of which is in communication with the inside of the discharge pipe (16), and the dispersion suction fan (24) is in transmission connection with the dispersion stirring blade (14); a discharge pipe (25) is provided at the bottom of the dispersion suction fan (24), and an exhaust pipe (26) is provided at the top of the dispersion suction fan (24).

6. The continuous drying system of wheat pentosan according to claim 1, characterized in that: A water seepage header (27) is installed at the bottom of the frame (1).

7. The continuous drying system of wheat pentosan according to claim 1, characterized in that: The first pressing and dehydrating box (4) is provided with a plurality of water-permeable holes (28) penetrating from top to bottom, and the first pressing and dehydrating box (4) is provided with a drainage port (29).

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