CN2769796Y - Middle range double-rotary drum mixed-flow grain drying machine - Google Patents

Abstract

The utility model discloses a grain dryer. Double-drum mixed-flow grain dryer with middle stove, it includes motor, variable speed transmission mechanism, drum, hot air cylinder, heating furnace, hot gas boiler, bearing assembly, bracket, feeding hopper and discharging drum, the drum is set horizontally, hot air The cylinder surrounds the outer circular surface of the drum and forms an annular closed hot air chamber with the outer circular surface of the drum. The feeding hopper is set at one end of the drum and communicates with the inner cavity of the drum, and the discharge drum is set at the other end of the drum. One end is connected with the inner cavity of the drum, and the hot air cylinder body is connected with a hot air boiler, which is arranged around the heating furnace, and the fan is connected to the hot air chamber through the air inlet pipe, and the side of the hot air chamber near the feeding hopper is connected to the drum through the air supply pipe At one end, because the hot air cylinder surrounds the drum, the temperature in the drum is always kept high, which is beneficial to dry grain and save energy. The drum is set in a horizontal direction, which improves the working condition of the bearing assembly and prolongs the service life of the dryer.

Description

Middle stove double drum mixed flow grain dryer

Technical field:

The utility model relates to a grain dryer.

Background technique:

The current grain dryers such as fluidized bed type, vertical air flow type, cross flow type, down flow type, tower type and round bin type have the disadvantages of large size and heavy weight, which are extremely difficult to carry, expensive, and consume energy during use. Also larger and suitable only for medium to large grain processing and storage units. Due to the current increase in grain output, some individual grain producers and processors need some small-scale grain drying equipment with low energy consumption. The patent No. ZL02211568. The miniaturization and other aspects of the dryer have been innovated and improved, but due to the inclined setting of the inner drum, the working conditions of the bearing assembly are poor, and the work is also inconvenient.

Utility model content:

The purpose of this utility model is to provide a long working life and energy-saving small double-drum mixed-flow grain dryer in the middle of the stove, so as to overcome the defects of poor working conditions and inconvenient use of the existing dryer bearing components. It includes a motor 32, a variable speed transmission mechanism 34, a drum 4, a hot air cylinder body 3, a heating furnace 25, a hot gas boiler 26, a bearing assembly 20, a bracket 21, a feeding hopper 37, and a discharge cylinder 22. The drum 4 is arranged in a horizontal direction, and the hot air The cylinder body 3 surrounds the outer circular surface of the drum 4 and forms an annular closed hot air chamber 3-1 with the outer circular surface of the drum 4. The feeding hopper 37 is arranged at one end of the drum 4 and communicates with the inner cavity of the drum 4. , the discharge cylinder 22 is arranged on the other end of the drum 4 and communicates with the inner chamber of the drum 4, and the hot air cylinder body 3 is communicated with a hot gas boiler 26, and the hot air boiler 26 is arranged around the heating furnace 25 to receive the heating of the heating furnace 25, and the fan 28 communicates with the hot air chamber 3-1 through the air inlet pipe 28-1, and the side of the hot air chamber 3-1 close to the feed hopper 37 is connected with one end of the drum 4 through the air supply pipe 40, and the drum 4 is composed of a drum shaft 4-1 and several blocks. Plate 4-2, several longitudinal lifting plates 4-6, cylinder wall 4-3 and two plug plates 4-4, the two ends of the drum shaft 4-1 pass through the plug plate 4-4 and pass through the bearing The assembly 20 is supported on the bracket 21, and one end of the drum shaft 4-1 is connected with the motor 32 through the speed change transmission mechanism 34 to receive the rotational power of the motor 32, and the lifting plate 4-2 is fixed on the inner surface of the drum wall 4-3 and the drum Between the outer surfaces of the shaft 4-1, several flight boards 4-2 are evenly distributed along the length direction of the drum shaft 4-1, and the longitudinal boards 4-6 are fixed inside the cylinder wall 4-3 along the length direction of the drum 4. On the surface, a plurality of longitudinal lifting plates 4-6 are evenly distributed along the circumferential direction of the inner surface of the cylinder wall 4-3. When the drying machine of the present utility model is working, the heating furnace 25 heats the hot air boiler 26, and the hot air boiler 26 is communicated with the hot air cylinder 3 to heat the air in the hot air chamber 3-1. Due to the proximity of the hot air chamber 3-1 The side of the feed hopper 37 is connected to one end of the drum 4 through the air supply pipe 40, and the fan 28 draws air into the hot air chamber 3-1, and the hot air flows in from one end of the drum 4, engulfing the wet grain to the side of the drum 4. The other end flows, and due to the continuous rotation of the drum 4, the grain rolls up and down under the action of the inner wall of the drum 4 and the lifting plate 4-2, which increases the contact area between the grain and the hot air and improves the drying efficiency. 4. Keep the temperature in the drum 4 high all the time, which is beneficial to dry grain and save energy. The cylinder 4 is arranged in a horizontal direction, which improves the working condition of the bearing assembly 20 and increases the service life of the dryer. The utility model has the advantages of simple structure, reasonable design and reliable operation, and has great popularization value.

Description of drawings:

Fig. 1 is a structural schematic diagram of the present utility model, Fig. 2 is a schematic diagram of the connection structure between the air supply pipe 40 and the hot air chamber 3-1 and the inner chamber of the drum 4 in Embodiment 1, Fig. 3 is a sectional view of A-A of Fig. 1, Fig. 4 is an implementation The bottom view of the hot gas boiler 26 in mode two, Fig. 5 is a B-B sectional view of Fig. 1,

Detailed ways:

Specific Embodiment 1: The present embodiment will be specifically described below with reference to FIG. 1 , FIG. 2 and FIG. 3 . It consists of a motor 32, a variable speed transmission mechanism 34, a drum 4, a hot air cylinder body 3, a heating furnace 25, a hot gas boiler 26, a bearing assembly 20, a bracket 21, a feed hopper 37 and a discharge drum 22, and the drum 4 is arranged horizontally. The hot air cylinder body 3 surrounds the outer surface of the drum 4 and forms an annular closed hot air chamber 3-1 with the outer surface of the drum 4. The feeding hopper 37 is arranged at one end of the drum 4 and communicates with the inner cavity of the drum 4. The discharge cylinder 22 is arranged on the other end of the drum 4 and communicates with the inner cavity of the drum 4. The hot air cylinder body 3 is communicated with a hot gas boiler 26. The hot air boiler 26 is arranged around the heating furnace 25 to receive the heating of the heating furnace 25. The fan 28 The hot air chamber 3-1 is connected through the air inlet pipe 28-1, and the side of the hot air chamber 3-1 close to the feed hopper 37 is connected to one end of the drum 4 through the air supply pipe 40, and the drum 4 is composed of a drum shaft 4-1 and several lifting plates. 4-2. It is composed of several longitudinal lifting boards 4-6, cylinder wall 4-3 and two plug boards 4-4. The two ends of the drum shaft 4-1 pass through the plug board 4-4 and pass through the bearing assembly 20 is supported on the bracket 21, and one end of the drum shaft 4-1 is connected with the motor 32 through the speed change transmission mechanism 34 to receive the rotational power of the motor 32, and the lifting board 4-2 is fixed on the inner surface of the cylinder wall 4-3 and the drum shaft Between the outer surfaces of the 4-1, several lifting plates 4-2 are evenly distributed along the length direction of the drum shaft 4-1. Longitudinal lifting board 4-6 is fixed on the inner surface of cylinder wall 4-3 along the length direction of cylinder 4, and several longitudinal lifting boards 4-6 are evenly distributed along the circumferential direction of cylinder wall 4-3 inner surface. Every four lifting boards 4-2 are a group of distribution on the same position on the length of the drum shaft 4-1 and evenly distributed along the circumferential direction of the drum shaft 4-1, the lifting boards 4-2 and the drum shaft 4-1 The formed angle β is an acute angle, and the angle β faces one end of the drum 4 provided with the feed hopper 37, and the cross-section of the flight board 4-2 is "L" shaped. So set, after the lifting board 4-2 picks up the grain, there is a displacement towards the discharge cylinder 22 when the grain slides down along the lifting board 4-2, which is conducive to the movement of the grain in the drum 4.

Specific Embodiment 2: The present embodiment will be specifically described below with reference to FIG. 1 and FIG. 4 . The difference between this embodiment and Embodiment 1 is that it also includes an insulating layer body 2 and a chimney 8, and the insulating layer body 2 is fixed between the inner wall of the hot air cylinder body 3 and the outer surface of the drum 4 and is connected to the outer surface of the drum 4. An annular closed insulation chamber 2-1 is formed between them, the chimney 8 passes through the shell of the hot blast cylinder 3 and communicates with the insulation chamber 2-1, and the upper end of the heating furnace 25 communicates with the insulation chamber 2-1. Set up in this way, the flue gas produced by the heating furnace 25 flows out from the chimney 8 after passing through the heat preservation chamber 2-1, and the heat carried in the flue gas is utilized to heat the drum 4 and the hot air chamber 3-1, which is more conducive to save energy. As shown in Figure 4, the hot gas boiler 26 is a "U"-shaped hollow cavity, and the middle part of the "U" shape of the hot gas boiler 26 corresponds to the upper end of the heating furnace 25, and the two ends of the hot gas boiler 26 are respectively connected to the hot air chamber. 3-1 connected. Such setting makes the flame generated by the heating furnace 25 located in the middle of the hot gas boiler 26, which not only increases the heat exchange area, but also enables the flame and flue gas to directly heat the drum 4.

Specific Embodiment Three: The present embodiment will be specifically described below with reference to FIG. 1 . The difference between this embodiment and the second embodiment is: the heating furnace 25 is arranged in the middle of the length direction of the drum 4 , and the two chimneys 8 are arranged at both ends of the insulation layer body 2 respectively. After the heating furnace 25 is set in this way to heat the drum 4 and the heat preservation chamber 2-1, the heat transfer distance is the shortest and the energy is saved the most.

Specific Embodiment 4: The present embodiment will be specifically described below with reference to FIG. 1 and FIG. 5 . The difference between this embodiment and Embodiment 1 is that it also includes a discharge drum, which consists of a hub 14-1, a radial flight 14-2, a transverse flight 14-3, and an inner end baffle 14-4. , an outer end face baffle 14-5, a conical nozzle 14-6, a discharge trough 14-7 and a cylinder wall 14-8, the hub 14-1 is fixed on the end of the drum shaft 4-1 close to the discharge cylinder 22, Several radial flight boards 14-2 are fixed between the inner surface of the cylinder wall 14-8 and the outer circular surface of the wheel hub 14-1, and several transverse flight boards 14-3 are fixed along the axial direction of the cylinder wall 14-8. On the inner surface of the cylinder wall 14-8, the inner end face baffle 14-4 blocks the inner end of the cylinder wall 14-8, and the discharge cylinder 22 passes through the inner end face baffle 14-4 to connect with the inner cavity of the discharge drum Through, the outer end face baffle 14-5 is fixed on the outer end of the cylinder wall 14-8, and the central round hole of the outer end face baffle 14-5 is relatively affixed to the edge of the large end of the tapered mouth 14-6 along its edge, and the outlet Feed chute 14-7 penetrates the inner cavity of the discharge drum through tapered mouth 14-6, and the cross-sections of radial flight 14-2 and transverse flight 14-3 are all "L" shaped. Due to the discharge drum is set, after the grain flowing out from the drum 4 enters the discharge drum through the discharge drum 22, it is shoveled up by the radial lifting board 14-2 and the horizontal lifting board 14-3 and then falls, so that the grain can be cooled rapidly to Be beneficial to its preservation, the grain that falls into discharge chute 14-7 is discharged the utility model. The purpose of arranging the conical mouth 14-6 is to facilitate the collection of grains into and out of the chute 14-7.

Specific Embodiment 5: The present embodiment will be specifically described below in conjunction with FIG. 1 . The difference between this embodiment and embodiment one is; it also includes car body 31 and wheel 30, and wheel 30 is connected on the bottom of car body 31, and electric motor 32, speed change transmission mechanism 34, drum 4, hot air tube body 3, heating Furnace 25 , hot gas boiler 26 , bearing assembly 20 , support 21 , feed hopper 37 and discharge barrel 22 are all arranged on the vehicle body 31 . With such arrangement, the dryer in this embodiment can be easily dragged by a tractor and set to a required working position.

Specific Embodiment Six: The present embodiment will be specifically described below in conjunction with FIG. 1 . The difference between this embodiment and Embodiment 1 is that the angle β is preferably between 60 degrees and 75 degrees. Such setting can obtain the best grain propulsion speed.

Claims (7)

1, middle part cooking stove twin-roll mixed-flow grain drying machine, it is characterized in that it comprises motor (32), variable transmission mechanism (34), cylinder (4), hot blast cylindrical shell (3), heating furnace (25), hot gas boiler (26), bearing assembly (20), support (21), feed hopper (37) and discharge barrel (22), cylinder (4) horizontal direction setting, hot blast cylindrical shell (3) be looped around the outer round surface of cylinder (4) outer and and the outer round surface of cylinder (4) between form the hot blast chamber (3-1) of annular space sealing, feed hopper (37) is arranged on an end of cylinder (4) and is communicated with the inner chamber of cylinder (4), discharge barrel (22) is arranged on the other end of cylinder (4) and is communicated with the inner chamber of cylinder (4), be communicated with hot gas boiler (26) in the hot blast cylindrical shell (3), hot gas boiler (26) be arranged on heating furnace (25) around, blower fan (28) is communicated with hot blast chamber (3-1) by blast pipe (28-1), close feed hopper (37) side in hot blast chamber (3-1) is communicated with an end of cylinder (4) by ajutage (40), cylinder (4) is by drum shaft (4-1), some flights (4-2), some vertical flights (4-6), barrel (4-3) and two bulkheads (4-4) are formed, the two ends of drum shaft (4-1) pass outside the bulkhead (4-4) and are bearing on the support (21) by bearing assembly (20), one end of drum shaft (4-1) is connected to accept the rotary power of motor (32) with motor (32) by variable transmission mechanism (34), flight (4-2) is fixed between the outer surface of the inner surface of barrel (4-3) and drum shaft (4-1), several flights (4-2) evenly distribute along the length direction of drum shaft (4-1), vertically flight (4-6) is fixed on the inner surface of barrel (4-3) along the length direction of cylinder (4), and some vertical flights (4-6) evenly distribute along the circumferencial direction of barrel (4-3) inner surface.

2, middle part according to claim 1 cooking stove twin-roll mixed-flow grain drying machine is characterized in that flight (4-2) and drum shaft (4-1) angulation (β) are acute angle, and angle (β) is towards an end that is provided with feed hopper (37) of cylinder (4).

3, middle part according to claim 1 cooking stove twin-roll mixed-flow grain drying machine, it is characterized in that it also comprises heat-insulation layer body (2) and chimney (8), heat-insulation layer body (2) be fixed between the outer surface of the inwall of hot blast cylindrical shell (3) and cylinder (4) and and the outer surface of cylinder (4) between form the incubation cavity (2-1) of annular space sealing, the shell that chimney (8) passes hot blast cylindrical shell (3) is connected with incubation cavity (2-1), and the upper end of heating furnace (25) is connected with incubation cavity (2-1).

4, middle part according to claim 3 cooking stove twin-roll mixed-flow grain drying machine is characterized in that heating furnace (25) is arranged on the centre position of cylinder (4) length direction, and two chimneys (8) are separately positioned on the place, two ends of heat-insulation layer body (2).

5, middle part according to claim 1 cooking stove twin-roll mixed-flow grain drying machine, it is characterized in that it also comprises the discharging cylinder, the discharging cylinder is by wheel hub (14-1), flight (14-2) radially, horizontal flight (14-3), inner face baffle plate (14-4), outer face baffle plate (14-5), tapered mouth (14-6), blow tank (14-7) and barrel (14-8) are formed, wheel hub (14-1) is fixed on close discharge barrel (22) the one end places of drum shaft (4-1), be fixed with some radially flights (14-2) between the outer round surface of the inner surface of barrel (14-8) and wheel hub (14-1), some horizontal flights (14-3) are fixed on the inner surface of barrel (14-8) along the axis direction of barrel (14-8), inner face baffle plate (14-4) retaining is at the medial end of barrel (14-8), discharge barrel (22) passes the intracavity inter-connection of inner face baffle plate (14-4) and discharging cylinder, outer face baffle plate (14-5) is fixed on the outboard end of barrel (14-8), outer face baffle plate (14-5) center hole place is relative affixed with tapered mouth (14-6) stub end edge along its edge, blow tank (14-7) penetrates the inner chamber of discharging cylinder by tapered mouth (14-6), radially flight (14-2) and laterally the cross section of flight (14-3) all be " L " shape.

6, middle part according to claim 1 cooking stove twin-roll mixed-flow grain drying machine, it is characterized in that it also comprises car body (31) and wheel (30), wheel (30) is connected on the bottom of car body (31), and motor (32), variable transmission mechanism (34), cylinder (4), hot blast cylindrical shell (3), heating furnace (25), hot gas boiler (26), bearing assembly (20), support (21), feed hopper (37) and discharge barrel (22) all are arranged on the car body (31).

7, middle part according to claim 2 cooking stove twin-roll mixed-flow grain drying machine is characterized in that angle (β) is that 60 degree are between 75 degree.

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