Oil sand bean wet meal drying device

Abstract

The invention provides an oil sand bean wet meal drying device which comprises a disc type drying machine, the disc type drying machine comprises a machine shell, the upper end of the machine shell is provided with a feeding port and an exhaust port, a rotating shaft, small drying discs and large drying discs are arranged in the machine shell, the small drying discs and the large drying discs are alternately arranged in the vertical direction, and first heat conduction cavities are formed in the large drying discs; a second heat conduction cavity is formed in the small drying disc, an air inlet is formed in the outer end of the second heat conduction cavity, the inner end of the second heat conduction cavity is connected with the inner end of the first heat conduction cavity adjacent to the upper side through a heat conduction branch pipe, air outlets are evenly distributed in the outer side of the large drying disc in the circumferential direction, the air outlets are obliquely and upwards formed, and the first heat conduction cavity is communicated with the interior of the machine shell through the air outlets. A vertically upward isolation wind belt is formed on the outer side of the large drying disc, so that soybean meal is prevented from falling to the outer side of the large drying disc when falling from the small drying disc.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, in particular to an oil-sand bean wet meal drying device. Background Art

[0002] Oil bean contains about 8% protein, about 32-33% starch, and about 22-23% fat products, and can be used to prepare oil products and starch products. After the oil is extracted from the oil bean, wet meal is obtained, which is dried and used to prepare starch products.

[0003] The disc dryer can be used to dry a variety of materials. In order to prevent the material from falling from the edge of the drying disc to the bottom disc, the existing document CN213179231 U fixes a material blocking ring plate around the large drying disc. However, the material falling on the upper side of the material blocking ring plate cannot be scraped and fed by the rake assembly and is easily left on the material blocking ring plate. In order to solve the above problem, the existing document CN216245316U adds an inclined scraper device to the rake assembly, which increases the cost of the entire equipment. Summary of the invention

[0004] The invention provides an oil-sand bean wet meal drying device, which forms a vertical upward isolation wind belt on the outer side of a large drying plate to prevent the soybean meal from falling to the outer side of the large drying plate when it falls from a small drying plate.

[0005] The technical solution of the present invention is implemented as follows: an oil sand bean wet meal drying device comprises a disc dryer, the disc dryer comprises a casing, the upper end of the casing is provided with a feed inlet and an exhaust outlet, a rotating shaft and a small drying disc and a large drying disc alternately arranged vertically are arranged in the casing, a first heat conduction cavity is arranged in the large drying disc, a second heat conduction cavity is arranged in the small drying disc, an air inlet is arranged at the outer end of the second heat conduction cavity, the inner end of the second heat conduction cavity is connected to the inner end of the first heat conduction cavity adjacent to the upper side through a heat conduction branch pipe, the outer side of the large drying disc is uniformly provided with air outlets along the circumferential direction, the air outlets are arranged obliquely upward, and the first heat conduction cavity is communicated with the casing through the air outlets.

[0006] Furthermore, a vertical heat conducting pipe is provided in the casing, which is connected to the air inlet. The inner end of the first heat conducting cavity at the bottom is connected to the vertical heat conducting pipe through an air conducting branch pipe, and the inner end of the second heat conducting cavity at the top is connected to the casing through a heat conducting branch pipe.

[0007] Furthermore, the casing includes an inner shell and an outer shell, an insulating cavity is provided between the inner shell and the outer shell, a heat-conducting pipe group is wound in the insulating cavity, one end of the heat-conducting pipe group is connected to the heating mechanism, and the other end is connected to the lower end of the vertical heat-conducting pipe.

[0008] Furthermore, the heating mechanism includes a heater, one end of the heater is connected to the fan, and the other end is connected to the heat pipe group, the air inlet of the fan is connected to the air outlet of the gas-water separator, and the air inlet of the gas-water separator is connected to the exhaust port.

[0009] Furthermore, it also includes a feeding mechanism, which includes a horizontal conveying shell, a transmission mesh conveyor belt is arranged in the horizontal conveying shell, one end of the horizontal conveying shell is connected to the upper end of the feed port, and a conical feed hopper is arranged at the upper end of the other end of the horizontal conveying shell, and a motor-driven rotating blade is arranged in the conical feed hopper.

[0010] Furthermore, one end of the horizontal conveying shell away from the feed port is connected to the air inlet of the gas-water separator through a gas transmission branch pipe.

[0011] Furthermore, spiral guide plates are provided in both the first heat conduction cavity and the second heat conduction cavity.

[0012] Beneficial effects of the present invention:

[0013] The oil sand bean wet meal drying device of the present invention adopts a disc dryer to perform low-temperature desolventizing for about 40 minutes at a temperature below 80°C, which can ensure that the starch in the wet meal remains unchanged; through the cooperation of the air inlet, the second heat conduction cavity, the heat conduction branch pipe, the first heat conduction cavity and the air outlet, the hot air conveying is opposite to the feeding direction, and the hot air discharged through the air outlet forms an isolation wind belt inclined upward, which prevents the soybean meal from falling to the outside of the large drying plate when falling from the small drying plate.

[0014] The feeding mechanism of the present invention crushes the oil-sand bean wet meal by rotating blades to prevent the agglomerated wet meal from entering the dryer and affecting the drying efficiency; at the same time, a mesh conveyor belt is used, and the horizontal conveyor shell is connected to the gas-water separator through a gas transmission branch pipe, so that the hot air in the shell enters the horizontal conveyor shell to preheat the wet meal, and the mesh conveyor belt is conducive to the passage of wind. In addition, the air inlet of the fan is connected to the air outlet of the gas-water separator to realize the recycling of waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0017] Figure 2 It is a structural schematic diagram of a disc dryer;

[0018] Figure 3 It is a structural schematic diagram of the heat transfer branch pipe;

[0019] Figure 4 is a schematic diagram of the structure of the air outlet;

[0020] Figure 5 This is a schematic diagram of the internal structure of a large drying plate;

[0021] Figure 6 This is a schematic diagram of the internal structure of a small drying tray;

[0022] Figure 7 This is a schematic diagram of the structure of Example 2 of the present invention.

[0023] Casing 1, feed inlet 2, exhaust outlet 3, discharge outlet 4, rotating shaft 5, small drying plate 6, large drying plate 7, first rake assembly 8, second rake assembly 9, heat insulation chamber 10, heat conduction pipe group 11, heater 12, fan 13, gas-water separator 14, first heat conduction chamber 15, second heat conduction chamber 16, spiral guide plate 17, air inlet 18, heat conduction branch pipe 19, air outlet 20, vertical heat conduction pipe 21, air conduction branch pipe 22, horizontal conveying shell 23, mesh conveyor belt 24, rotating blade 25, air delivery branch pipe 26. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figure 1 and 2 As shown, an oil sand bean wet meal drying device includes a disc dryer, which includes a casing 1. The upper end of the casing 1 is provided with a feed inlet 2 and an exhaust port 3, and the lower end is provided with a discharge port 4. A rotating shaft 5 and small drying discs 6 and large drying discs 7 alternately arranged vertically are arranged in the casing 1. The lower end of the rotating shaft 5 is connected to a motor and driven to rotate by the motor. The small drying disc 6 and the large drying disc 7 are fixed in the casing 1. A first rake component 8 matched with the small drying disc 6 and a second rake component 9 matched with the large drying disc 7 are fixed on the rotating shaft 5. The structures of the first rake component 8 and the second rake component 9 are both prior art.

[0027] The housing 1 includes an inner housing and an outer housing, and an insulating cavity 10 is provided between the inner housing and the outer housing. A heat-conducting pipe group 11 is wound in the insulating cavity 10. The heat-conducting pipe group 11 is wound in an S-shape from the lower end of one side of the insulating cavity 10 to the upper end, and then wound in an S-shape from the upper end of the other side of the insulating cavity 10 to the lower end. The inside of the housing 1 is heated by the arrangement of the insulating cavity 10 and the heat-conducting pipe group 11.

[0028] One end of the heat pipe group 11 is connected to the heating mechanism, which includes a heater 12, one end of the heater 12 is connected to the fan 13, and the other end is connected to the heat pipe group 11, the air inlet of the fan 13 is connected to the air outlet of the gas-water separator 14, and the air inlet of the gas-water separator 14 is connected to the exhaust port 3. The hot air in the housing 1 enters the gas-water separator 14 through the exhaust port 3 for separation, and then returns to the heater 12 through the fan 13 for reheating, so as to realize the recycling of waste heat.

[0029] like Figure 5 and 6 As shown, a first heat conduction cavity 15 is provided in the large drying plate 7, a second heat conduction cavity 16 is provided in the small drying plate 6, and spiral guide plates 17 are fixed in the first heat conduction cavity 15 and the second heat conduction cavity 16. The spiral guide plates 17 are provided to limit the flow path of the hot air, so that the drying plate is heated more evenly, and the local temperature is prevented from being too high and the soybean meal is burned.

[0030] like Figure 2-Figure 4 As shown, an air inlet 18 is provided at the outer end of the second heat-conducting cavity 16, and the inner end of the second heat-conducting cavity 16 is connected to the inner end of the first heat-conducting cavity 15 adjacent to the upper side through a heat-conducting branch pipe 19. The outer side of the large drying plate 7 is uniformly provided with air outlets 20 along the circumferential direction, and the air outlets 20 are arranged obliquely upward, and the first heat-conducting cavity 15 is connected to the inside of the casing 1 through the air outlets 20. The small drying plate 6 is turned and fed from the inside out by the first rake assembly 8, and then falls onto the adjacent large drying plate 7 at the lower side through the edge of the small drying plate 6. The hot air entering the second heat conduction cavity 16 through the air inlet 18 heats the small drying plate 6, and then enters the first heat conduction cavity 15 adjacent to the upper side through the heat conduction branch pipe 19 to heat the adjacent large drying plate 7 at the upper side, and finally is discharged obliquely upward through the air outlet 20. On the one hand, the hot air is transported from bottom to top, and on the other hand, the hot air discharged through the air outlet 20 forms an upward isolation wind belt to prevent the soybean meal from falling to the outside of the large drying plate 7 when falling from the small drying plate 6.

[0031] like Figure 2As shown, a vertical heat conducting pipe 21 is also fixed in the housing 1, and the other end of the heat conducting pipe group 11 is connected to the lower end of the vertical heat conducting pipe 21. The vertical heat conducting pipe 21 is also connected to the air inlet 18, and the inner end of the first heat conducting cavity 15 at the lower end is connected to the vertical heat conducting pipe 21 through the air conducting branch pipe 22, and the inner end of the second heat conducting cavity 16 at the upper end is connected to the housing 1 through the heat conducting branch pipe 19. The air heated by the heater 12 enters the vertical heat conducting pipe 21 through the heat conducting pipe group 11, and then enters the second heat conducting cavity 16 of the small drying plate 6 through the vertical heat conducting pipe 21 and the air inlet 18.

[0032] Example 2

[0033] This embodiment is basically the same as embodiment 1, except that Figure 7 As shown, a device for drying wet meal of oil sand beans also includes a feeding mechanism, which includes a horizontal conveying shell 23, a mesh conveyor belt 24 for transmission is arranged in the horizontal conveying shell 23, one end of the horizontal conveying shell 23 is connected to the upper end of the feed port 2, and a conical feed hopper is arranged on the upper side of the other end of the horizontal conveying shell 23, and a rotating blade 25 driven by a motor is arranged in the conical feed hopper. The end of the horizontal conveying shell 23 away from the feed port 2 is connected to the air inlet of the gas-water separator 14 through a gas transmission branch pipe 26. The wet meal enters the conical feed hopper, and after being crushed by the rotating blade 25, it falls on the mesh conveyor belt 24, and is sent to the feed port 2 through the mesh conveyor belt 24. At the same time, the hot air of the casing 1 enters the horizontal conveying shell 23 through the feed port 2, and the crushed wet meal is subjected to waste heat. The waste heat gas enters the gas-water separator 14 through the gas transmission branch pipe 26, and the mesh conveyor belt 24 is used to facilitate the passage of the hot air.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil sand bean wet meal drying device, comprising a disc dryer, the disc dryer comprising a casing, the upper end of the casing is provided with a feed inlet and an exhaust port, the casing is provided with a rotating shaft and small drying discs and large drying discs alternately arranged vertically, the large drying disc is provided with a first heat conduction cavity, the small drying disc is provided with a second heat conduction cavity, and the characteristics are: An air inlet is arranged at the outer end of the second heat-conducting cavity, and the inner end of the second heat-conducting cavity is connected to the inner end of the first heat-conducting cavity adjacent to the upper side through a heat-conducting branch pipe. Air outlets are evenly distributed along the circumferential direction on the outer side of the large drying plate, and the air outlets are arranged obliquely upward. The first heat-conducting cavity is connected to the inside of the casing through the air outlets.

2. The oil-sand bean wet meal drying device according to claim 1, characterized in that: A vertical heat conducting pipe is also arranged in the casing, which is connected to the air inlet. The inner end of the first heat conducting cavity at the bottom is connected to the vertical heat conducting pipe through an air conducting branch pipe, and the inner end of the second heat conducting cavity at the top is connected to the casing through a heat conducting branch pipe.

3. The oil-sand bean wet meal drying device according to claim 1 or 2, characterized in that: The casing comprises an inner shell and an outer shell, an insulating cavity is arranged between the inner shell and the outer shell, a heat conducting pipe group is wound in the insulating cavity, one end of the heat conducting pipe group is connected to the heating mechanism, and the other end is connected to the lower end of the vertical heat conducting pipe.

4. The oil-sand bean wet meal drying device according to claim 3, characterized in that: The heating mechanism comprises a heater, one end of the heater is connected to the fan, and the other end is connected to the heat transfer pipe group, the air inlet of the fan is connected to the air outlet of the gas-water separator, and the air inlet of the gas-water separator is connected to the air outlet.

5. The oil-sand bean wet meal drying device according to claim 4, characterized in that: It also includes a feeding mechanism, which includes a horizontal conveying shell, a transmission mesh conveyor belt is arranged in the horizontal conveying shell, one end of the horizontal conveying shell is connected to the upper end of the feed port, and a conical feed hopper is arranged on the upper side of the other end of the horizontal conveying shell, and a motor-driven rotating blade is arranged in the conical feed hopper.

6. The oil-sand bean wet meal drying device according to claim 5, characterized in that: One end of the horizontal conveying shell away from the feed inlet is connected to the air inlet of the gas-water separator through an air transmission branch pipe.

7. The oil-sand bean wet meal drying device according to claim 1, characterized in that: Spiral guide plates are arranged in the first heat conduction cavity and the second heat conduction cavity.

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