CN105987588B - Drum-type material drying unit - Google Patents

Abstract

The present invention relates to drying materials fields, a kind of drum-type material drying unit is disclosed, outer cylinder including rotatable setting and the air hose being arranged in outer cylinder, the material plectrum that multiple axial screws extend is formed on the inner wall of outer cylinder, and the outer wall face interval of the inner wall of outer cylinder and air hose to form the first conveyor chamber therebetween；On material conveying direction, the beginning of the first conveyor chamber is connected to the feed inlet of drum-type material drying unit, and the end of the first conveyor chamber is connected to the discharge port of drum-type material drying unit；It is axially distributed on the tube wall of air hose to have multiple air ports, for the radial spray drying wind into the first conveyor chamber.The drum-type material drying unit can material roll transmission process in, drying wind can radial penetration material adequately to be dried to material.

Description

Drum type material drying device

technical field

The invention relates to the technical field of material drying, in particular to a drum-type material drying device used for drying materials during conveying.

Background technique

Usually, various grains such as rice and wheat need to be dried in order to ensure that they have a certain degree of dryness before they are stored in warehouses or before some subsequent processing.

In the existing grain drying equipment, such as tumble drying equipment, the tumble drying equipment includes a drum, one end of the drum is formed as the feeding end, and the other end is formed as the discharging end, so that the grain is removed from the feeding material during rolling rotation. At the same time, the hot air device is usually set at the feeding end of the drum to blow hot air into the drum, so that the flow of the hot air is parallel to the conveying direction of the grain to dry the material.

However, the tumble drying equipment of this structure has certain defects, that is, because the flow of hot air is parallel to the conveying direction of the grain, it can only dry the surface of the material, although the drum can dry the material to a certain extent when it rotates. However, the drying air still cannot enter the interior of the overall material, so that the overall interior of the material cannot be fully dried, thus affecting the storage quality or failing to meet the needs of the subsequent process well.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a drum type material drying device, which can allow the drying wind to penetrate the material radially during the material tumbling and conveying process to fully dry the material.

In order to achieve the above purpose, the present invention provides a drum-type material drying device, the drum-type material drying device includes a rotatable outer cylinder and an air duct arranged in the outer cylinder, and the inner cylinder of the outer cylinder is A plurality of axially spirally extending material picks are formed on the wall surface, and the inner wall surface of the outer cylinder is spaced from the outer wall surface of the air duct to form a first conveying cavity therebetween; in the material conveying direction, The beginning end of the first conveying cavity is communicated with the feed port of the drum type material drying device, and the end of the first conveying cavity is communicated with the discharge port of the drum type material drying device; the air duct A plurality of tuyere ports are distributed along the axial direction on the pipe wall of the duct for radially spraying drying air into the first conveying cavity.

Through the above technical solution, since the outer cylinder is provided with an air duct, a plurality of axially spirally extending material picks are formed on the inner wall of the outer cylinder, and the material picks can loosen the materials. A plurality of air outlets are distributed along the axial direction for radially spraying drying air into the first conveying cavity. In this way, while the material is tumbling and conveying, the drying air first radially penetrates the tumbling material for drying. Then, after accumulating in the first conveying cavity, it flows along the first conveying cavity, and continues to dry the tumbling material, so that the drying air and the material are fully contacted, and the drying efficiency is significantly improved.

Preferably, a plurality of air nozzles for spraying drying air are arranged at an axial interval in the air duct, and each of the air openings of the air duct is connected with the corresponding air nozzle.

Further, in the circumferential direction of the air duct, the included angle between the two air openings is 0°-120°.

Preferably, a plurality of axially extending picking pieces are formed on the outer wall of the air duct.

Preferably, it is characterized in that an inner cylinder is arranged between the air duct and the outer cylinder; the first conveying cavity is formed between the outer wall surface of the inner cylinder and the inner wall surface of the outer cylinder; the The inner wall surface of the inner cylinder is formed with a plurality of the material picks extending axially and spirally, and the inner wall surface of the inner cylinder is spaced from the outer wall surface of the air duct to form a second conveying cavity therebetween; In the material conveying direction, the feeding port and the discharging port of the drum type material drying device are arranged on the same side, and the beginning end of the second conveying cavity is formed as the feeding port, and the The end of the second conveying cavity communicates with the beginning of the first conveying cavity at the same end, and the end of the first conveying cavity communicates with the material outlet.

Further, a plurality of the material picks extending axially spirally are formed on the outer wall surface of the inner cylinder.

Preferably, an air outlet hood communicated with the end of the first conveying cavity is provided on the end of the outer cylinder, and the air pipe passes through the air outlet hood; the air outlet hood has an air outlet and the The discharge port, the exhaust port and the discharge port are communicated with the end of the first conveying cavity.

Preferably, the drum type material drying device further includes a hot air device, and the hot air source of the hot air device is communicated with the air duct and supplies the drying air into the air duct.

Further, the hot air device further includes a plurality of air nozzles correspondingly connected to the tuyere of the air duct, and the plurality of air nozzles are connected in parallel to the hot air source through pipes.

Preferably, a temperature measuring device for detecting the temperature of the drying air is arranged at the tuyere of the air duct.

Other features and advantages of the present invention will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached image:

Fig. 1 is a kind of structural representation of the drum type material drying device provided by the specific embodiment of the present invention;

Fig. 2 is A-A sectional view in Fig. 1;

3 is another schematic structural diagram of the drum type material drying device provided by the specific embodiment of the present invention;

Fig. 4 is B-B sectional view in Fig. 3;

FIG. 5 is a schematic cross-sectional view of a third sectional structure of the drum type material drying device provided by the specific embodiment of the present invention.

Description of reference numerals

1-Hot air device, 2-Hot air source, 3-Pipeline, 7-First conveying cavity, 8-Second conveying cavity, 10-Air nozzle, 11-Outer cylinder, 12-Air duct, 13-Material pick, 14 -Air outlet, 15-Inner cylinder, 16-Air outlet hood, 20-Exhaust port, 21-Discharge port, 22-Feed sheet, 23-Feed port, 24-Temperature measuring device, 25-Feed pipe.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

As shown in FIG. 1 , the drum type material drying device provided by the specific embodiment of the present invention includes a rotatable outer cylinder 11 and an air duct 12 arranged in the outer cylinder 11 , and a plurality of shafts are formed on the inner wall surface of the outer cylinder 11 The material pick 13 extending to the spiral, and the inner wall surface of the outer cylinder 11 is spaced from the outer wall surface of the air duct 12 to form the first conveying cavity 7 therebetween; in the material conveying direction, the beginning of the first conveying cavity 7 It is communicated with the feed port 23 of the drum type material drying device, and the end of the first conveying cavity 7 is communicated with the discharge port 21 of the drum type material drying device; the pipe wall of the air duct 12 is axially distributed with a plurality of air ports 14 for radially spraying drying air into the first conveying cavity 7 .

Since the outer cylinder 11 is provided with an air duct 12, a plurality of material picks 13 extending axially and spirally are formed on the inner wall surface of the outer cylinder 11. The material picks 13 can transport materials loosely. At the same time, the pipes of the air duct 12 A plurality of tuyere ports 14 are distributed on the wall along the axial direction for radially spraying drying air into the first conveying cavity. In this way, while the material is tumbling and conveying, the drying air first penetrates the tumbling material radially. After drying, it accumulates in the first conveying cavity 7 and flows along the first conveying cavity 7, and continues to dry the tumbling material, so that the drying air is fully contacted with the material, and the drying efficiency is significantly improved.

Relative to the air duct 12 is filled with drying air and sprays the drying air through the tuyere 14, further, in order to improve the utilization efficiency and drying efficiency of hot air, and reduce the loss of hot air, as shown in FIG. 1, the inner axial direction of the air duct 12 is A plurality of tuyere nozzles 10 for spraying drying air are arranged at intervals, and each tuyere port 14 of the air duct 12 is connected with its corresponding tuyere nozzle 10 . In this way, the drying wind can directly pass through the tuyere 10 for jet drying operation. In this way, each air nozzle 10 blows drying hot air to the conveyed material in the radial direction (perpendicular or inclined to the material), thereby correspondingly reducing the air power consumption of the hot air device 1 (described below), and at the same time, making The conveyed material sequentially passes through each air nozzle 10 in the material conveying direction, and the air curtain formed by each air nozzle 10 covers the conveyed material, thereby further improving drying efficiency.

Of course, in order to further improve the drying efficiency and facilitate the discharge of moisture in the material from the downstream opening in the material conveying direction, further, each air nozzle 10 is configured to blow the conveyed material obliquely toward the downstream direction of the material conveying. Dry air. In this way, the drying air penetrates the material obliquely toward the downstream direction of the material conveying, so that the moisture in the material is more likely to flow to the downstream direction and be discharged from the downstream opening or the discharge end due to the pushing action of the drying air, which can significantly improve the drying effect. dry efficiency.

In addition, the tuyere 14 extends a certain length in the axial direction of the air duct 12. Accordingly, as shown in FIGS. 1 and 3, the tuyere 10 is configured to extend in the material conveying direction to form a certain length, for example, each air The nozzle 10 includes a conical air expansion chamber which is communicated with the hot air source 2 of the hot air device 1 through the heat preservation pipe 3. The large end of the conical air expansion chamber faces down and is connected to the tuyere 14. In this way, the drying air is filled with the heat preservation pipe. Each conical air expansion chamber is then sprayed out from the tuyere 14 to form an air curtain extending a certain length in the axial direction of the air duct 12 , so that the air curtains formed by each air nozzle 10 are connected back and forth, so that the air curtain of the air duct 12 is The contact area between the tumbling material and the drying air is increased in the axial direction, so that the material can pass through the air curtain with a certain length, thereby significantly improving the drying efficiency.

Of course, a plurality of air openings 14 may be formed on the entire pipe wall of the air duct 12, so that the air duct 12 forms an air column for blowing drying air in the entire circumferential direction in the first conveying cavity 7, or further, the lower part of the air duct 12 There are many tuyere openings 14 formed on the semicircle, so as to mainly densely penetrate and dry the materials on the bottom wall of the first conveying cavity 7, and a relatively small number of tuyere openings 14 can be formed on the upper half circle of the air duct 12 to prevent Through drying the material brought to the upper part of the first conveying cavity 7 by the material pick 13, for example, as shown in Figs. The included angle α between the two tuyere ports 14 is 0°-120°, more preferably, the included angle α between the two tuyere ports 14 is 60°-120°, so that on the lower half of the air duct 12 , forming the left and right air ports to spray the drying air radially to dry the tumbling materials.

As shown in FIG. 5 , in order to further loosen the conveyed material to increase the contact space between the material and the drying air, preferably, a plurality of axially extending picking pieces 22 are formed on the outer wall of the air duct 12 . In this way, the material moves from the bottom of the first conveying chamber 7 toward the top of the first conveying chamber 7 under the push of the material pick 13, and falls down after reaching the limit position, and further impacts on the picking piece 22 to further At the same time, the drying air ejected from the tuyere 14 of the air duct 12 penetrates the loose material to dry the material. Further, the air duct 12 is configured to be rotated, and the picking piece 22 can be configured to axially spirally extend on the additional wall surface of the air duct 12, and the air duct 12 may not be provided with the air nozzle 10, or alternatively, the air duct 12 is rotatably arranged, and the air nozzle 10 is fixedly located in the air duct 12 . In this way, the rotation of the air duct 12 can further increase the loosening effect of the picking piece 22 on the material, so as to significantly improve the drying effect.

In addition, in the drum type material drying device of the present invention, in order to further increase the contact area and time between the tumbling material and the drying air, preferably, as shown in FIGS. 3 and 4 , between the air duct 12 and the outer cylinder 11 An inner cylinder 15 is arranged; the inner cylinder 15 is known to be configured to be rotatable, and a first conveying cavity 7 is formed between the outer wall surface of the inner cylinder 15 and the inner wall surface of the outer cylinder 11; There are two axially spirally extending material picks 13, and the inner wall surface of the inner cylinder 15 is spaced from the outer wall surface of the air duct 12 to form a second conveying cavity 8 therebetween; in the material conveying direction, the roller The feeding port 23 and the discharging port 21 of the type material drying equipment are arranged on the same side, and the beginning end of the second conveying cavity 8 (the left end in Fig. 3 ) is formed as the feeding port 23, and the end of the second conveying cavity 8 (Fig. 3) at the same end communicates with the beginning end of the first conveying cavity 7 (the right end in FIG. 3 ), and the end of the first conveying cavity 7 (the left end in FIG. 3 ) communicates with the outlet 21 .

In this way, the inner cylinder 15 rotates, for example, the material entering from the feeding pipe 25 to the feeding port 23 is tumbled and transported in the second conveying cavity 8 to the end of the second conveying cavity 8 , and at the same time, the tuyere 14 of the air duct 12 is sprayed out. The drying air is used to dry the material. Then, at the right end of Figure 3, the material falls from the end of the second conveying cavity 8 to the beginning of the first conveying cavity 7, and is conveyed to the first conveying cavity under the rotation of the outer cylinder 11. The end of the cavity 7 is finally discharged from the discharge port 21, and at the same time, the drying air ejected from the tuyere 14 of the air duct 12 flows into the first conveying cavity 7 to continue drying the material, and finally from the first conveying cavity 7 end discharge.

Further, the function of the picking piece 22 is the same as that of the above-mentioned picking piece 22. As shown in FIG. 5, a plurality of material picking pieces 13 extending axially spirally are formed on the outer wall surface of the inner cylinder 15. In this way, when the inner cylinder 15 rotates, The material pick 13 on the outer wall of the inner cylinder 15 further loosens the material, so that the material has more contact area with the drying air, so that the drying air penetrates the loose material to dry the material.

In addition, as shown in Figures 1 and 3, in the drum type material drying device of the present invention, the end of the outer cylinder 11 is provided with an air outlet hood 16 that communicates with the end of the first conveying cavity 7, and the air outlet hood 16 is elastically sealed. The strip is sealed with the end face of the outer cylinder 11, and the air duct 12 passes through the air outlet hood 16; the air outlet hood 16 has an exhaust port 20 and a material outlet 21. 21 is located at the bottom of the air outlet hood 16 , and the air outlet 20 and the material outlet 21 communicate with the end of the first conveying cavity 7 . In this way, the exhaust port 20 can be connected with the dust collector to discharge the moisture of the material, and the discharge port 21 can be connected with the conveying and drying device 3 or the downstream subsequent conveyor.

In addition, the drum type material drying device of the present invention also includes a hot air device 1. As shown in Figures 1 and 3, the hot air source 2 of the hot air device 1 communicates with the air duct 12 and supplies the drying air into the air duct 12, In order to fill the air duct 12 with the drying air, at this time, the air duct 12 is not provided with the tuyere 10 .

Further, as mentioned above, the hot air device 1 further includes a plurality of tuyere nozzles 10 correspondingly connected to the tuyere ports 14 of the air duct 12 , and the plurality of tuyere nozzles 10 are connected in parallel with the hot air source 2 through the pipeline 3 . In this way, through the air nozzle 10, the power consumption of the hot air source 2 can be significantly reduced.

In addition, a temperature measuring device 24 for detecting the temperature of the drying air, such as a temperature sensor or a thermometer, is arranged at the tuyere 14 of the air duct 12, so as to directly detect and control the temperature of the drying air, so as to set the temperature of the drying air according to different materials and humidity. Determine the corresponding temperature of the drying air.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, These simple modifications belong to the protection scope of the present invention.

In addition, it should be noted that each specific technical feature described in the above-mentioned specific implementation manner may be combined in any suitable manner under the circumstance that there is no contradiction. In order to avoid unnecessary repetition, the present invention will not describe various possible combinations.

In addition, the various embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the contents disclosed in the present invention.

Claims (8)

1. A drum-type material drying device, characterized in that the drum-type material drying device comprises a rotatable outer cylinder (11) and an air duct (12) arranged in the outer cylinder (11) A plurality of material picks (13) extending axially spirally are formed on the inner wall surface of the outer cylinder (11), and the inner wall surface of the outer cylinder (11) and the outer wall surface of the air duct (12) spaced to form a first delivery cavity (7) therebetween; In the material conveying direction, the beginning end of the first conveying cavity (7) communicates with the feeding port (23) of the drum type material drying device, and the end of the first conveying cavity (7) communicates with the drum The discharge port (21) of the type material drying device is connected; A plurality of tuyere ports (14) are distributed along the axial direction on the pipe wall of the air duct (12) for radially spraying drying air into the first conveying cavity (7); the air duct (12) A plurality of tuyere nozzles (10) for spraying drying air are arranged at intervals in the inner axial direction, and each of the tuyere ports (14) of the air duct (12) is connected with the corresponding tuyere nozzle (10). 2. The drum type material drying device according to claim 1, characterized in that, in the circumferential direction of the air duct (12), the included angle between the two air outlets (14) is 0°- 120°. 3 . The drum type material drying device according to claim 1 , wherein a plurality of axially extending picking pieces ( 22 ) are formed on the outer wall surface of the air duct ( 12 ). 4 . 4. The drum type material drying device according to any one of claims 1-3, wherein an inner cylinder (15) is arranged between the air duct (12) and the outer cylinder (11) ; The first conveying cavity (7) is formed between the outer wall surface of the inner cylinder (15) and the inner wall surface of the outer cylinder (11); A plurality of the material picks (13) spirally extending in the axial direction are formed on the inner wall surface of the inner cylinder (15), and the inner wall surface of the inner cylinder (15) is connected to the outer surface of the air duct (12). the walls are spaced to form a second delivery cavity (8) therebetween; In the material conveying direction, the feeding port (23) and the discharging port (21) of the drum type material drying device are arranged on the same side, and the beginning end of the second conveying cavity (8) is formed For the feeding port (23), the end of the second conveying cavity (8) communicates with the beginning of the first conveying cavity (7) at the same end, and the end of the first conveying cavity (7) is connected to the end of the first conveying cavity (7). The discharge port (21) is communicated. 5 . The drum type material drying device according to claim 4 , wherein a plurality of material picks ( 13 ) extending axially and spirally are formed on the outer wall surface of the inner cylinder ( 15 ). 6 . 6 . The drum type material drying device according to claim 1 , wherein an air outlet cover ( 16), the air duct (12) passes through the air outlet hood (16); The air outlet hood (16) has an air outlet (20) and the material outlet (21), and the air outlet (20) and the material outlet (21) are connected to the first conveying cavity (7). ) are connected at the ends. 7. The drum-type material drying device according to claim 1, wherein the drum-type material drying device further comprises a hot air device (1), and a plurality of air nozzles (10) are connected in parallel through pipes (3). The hot air source (2) of the hot air device (1). 8 . The drum type material drying device according to claim 1 , wherein a temperature measuring device ( 24 ) for detecting the drying air temperature is arranged at the tuyere ( 14 ) of the air duct ( 12 ). 9 . .