Rice bran powder drying machine

Abstract

The utility model relates to the technical field of rice bran powder production, in particular to a rice bran powder drying machine which achieves preheating and intermittent feeding of raw materials, does not need a special feeder, and is simple in structure, low in cost and good in practicability. Comprising a dryer body, a stirring shaft and a plurality of stirring rakes. The preheating box is installed on the drying machine body, the box cover is installed on a feeding port of the preheating box, the middle of the flashboard is rotationally connected with a discharging port of the preheating box, the flashboard shields the discharging port of the preheating box, the baffle is arranged on the lower portion of the flashboard, and the lower end of the baffle extends into a drying cavity of the drying machine body; and the baffle plate is aligned with the stirring rake.

Description

Technical Field

[0001] The utility model relates to the technical field of bran powder production, in particular to a bran powder dryer. Background Art

[0002] Bran powder is made by drying furfural residue, crushing and bagging. A vacuum rake dryer is needed for drying furfural residue. A variety of vacuum rake dryers are proposed in the prior art, such as a vacuum rake dryer with an anti-sticking wall proposed in the Chinese utility model patent with publication number CN218410474U. The dryer achieves the problem of preheating the raw materials by setting a vacuum tube, a preheating box and a preheating chamber. The motor drives the dividing plate to rotate, thereby stirring the raw materials, and preheating the raw materials through the preheating chamber and hot air, so as to solve the problem that the hot air generated by the vacuum dryer is directly discharged without recovery, the heat loss is large, and the energy utilization rate is low, thereby improving the heat recovery rate, thereby improving the energy saving and environmental protection effect of the vacuum dryer.

[0003] However, in the above-mentioned prior art, a screw feeder needs to be arranged between the preheating box and the vacuum dryer, and the raw materials in the preheating box are transported to the vacuum dryer through the screw feeder, which has a relatively complex structure and high cost. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a bran powder dryer which can realize raw material preheating and intermittent feeding, does not need a special feeder, has a relatively simple structure, reduces cost and has good practicality.

[0005] The utility model discloses a bran powder dryer, comprising a dryer body, a stirring shaft and a plurality of stirring rakes, a drying chamber is arranged inside the dryer body, the stirring shaft is rotatably installed in the drying chamber of the dryer body, and a plurality of stirring rakes are arranged on the circumference of the stirring shaft; the utility model also comprises a preheating box, a box cover, a gate plate and a baffle plate, a feed inlet is arranged at the upper part of the dryer body, a discharge inlet is arranged at the lower part of the dryer body, both the feed inlet and the discharge inlet are communicated with the drying chamber, the preheating box is arranged on the dryer body, a preheating chamber is arranged inside the preheating box, a discharge inlet is arranged at the bottom of the preheating box, the discharge inlet is communicated with the feed inlet through the dryer body, a feeding inlet is arranged at the top of the preheating box, both the discharge inlet and the feeding inlet are communicated with the preheating chamber, the box cover is arranged on the feeding inlet of the preheating box, the middle part of the gate plate is rotatably connected with the discharge inlet of the preheating box, the gate plate shields the discharge inlet of the preheating box, a baffle plate is arranged at the lower part of the gate plate, and the lower end of the baffle plate extends into the dryer body. The baffle is aligned with the stirring rake in the drying chamber of the dryer body; when working, high-temperature steam and other heating media are input into the heating interlayer of the dryer body and the preheating box, and the raw materials are added into the preheating chamber of the preheating box through the feeding port of the preheating box for preheating, and the feeding port of the preheating box is closed by the box cover, and the stirring shaft drives multiple stirring rakes to rotate. When the stirring rake rotates to the upper part of the dryer body, it pushes the baffle, and the baffle drives the gate plate to rotate, and the discharge port of the preheating box is opened, so that the raw materials fall into the drying chamber of the dryer body. After the stirring rake is separated from the baffle, the gate plate is reset to cover the discharge port of the preheating box, thereby realizing intermittent feeding of the preheating box into the dryer body, avoiding the problem of slow heating and uneven heating of the raw materials caused by putting too much raw materials into the drying chamber of the dryer body at one time, and the raw materials are preheated and dried simultaneously, and there is no need to set a special screw feeder, the structure is relatively simple, the cost is reduced, and the practicality is good.

[0006] Preferably, it also includes an upper stirring plate and multiple upper stirring blades, the upper stirring plate is installed on the upper end surface of the gate plate, and the multiple upper stirring blades are installed on the upper stirring plate, and the upper stirring plate and the multiple upper stirring blades are located in the preheating chamber of the preheating box; when the gate plate rotates intermittently, the gate plate drives the upper stirring plate and the multiple upper stirring blades to swing back and forth in the preheating chamber of the preheating box, stirs the raw materials in the preheating chamber, and improves the uniformity of the raw material preheating.

[0007] Preferably, it also includes a lower connecting rod, an upper connecting rod and an exhaust pipe. The lower end of the tension spring is connected to the upper stirring plate through the lower connecting rod, and the upper end of the tension spring is connected to the upper part of the preheating box through the upper connecting rod. The elastic force of the tension spring pulls the gate plate to cover the discharge port of the preheating box. When the stirring rake pushes the baffle to drive the gate plate to rotate, the tension spring is stretched. When the stirring rake is separated from the baffle, the elastic force of the tension spring causes the rake head to rotate and reset, which has good practicality.

[0008] Preferably, it also includes two exhaust pipes and two filters, and filters are arranged at the inner ends of the two exhaust pipes, and the two filters are respectively located in the drying chamber of the dryer body and the preheating chamber of the preheating box; the two exhaust pipes are connected to an external vacuum pump, and the vacuum pump draws a certain vacuum degree in the drying chamber of the dryer body and the preheating chamber of the preheating box through the two exhaust pipes, thereby reducing the boiling point of water and allowing the water in the raw materials to evaporate quickly at low temperature; the evaporated water vapor is filtered by the two filters and then discharged through the two exhaust pipes.

[0009] Preferably, the stirring rake includes a lower stirring rod and a rake head, the inner end of the lower stirring rod is installed on the outer wall of the stirring shaft, and the rake head is elastically installed on the outer end of the lower stirring rod through an elastic component, and the outer end of the rake head is in scraping contact with the inner wall of the dryer body; the stirring shaft drives the lower stirring rod and the rake head to rotate, and the lower stirring rod and the rake head stir the raw materials to make the raw materials heated more fully, and the elastic force of the elastic component makes the rake head always scrape the inner wall of the dryer body to prevent the raw materials from sticking to the inner wall of the dryer body, which has good practicality.

[0010] Preferably, the elastic component includes an airbag and an air nozzle, the inner end of the rake head is slidably inserted on the outer end of the lower stirring rod, the airbag is arranged between the inner end of the rake head and the lower stirring rod, and the air nozzle is arranged on the airbag, and the air nozzle extends out of the outside of the lower stirring rod.

[0011] Preferably, it also includes a discharge cover, a support plate and a push cylinder, the discharge cover is rotatably screwed in the discharge port of the dryer body, one end of the support plate is movably connected to the discharge cover, the other end of the support plate is connected to one end of the push cylinder, and the other end of the support plate is rotatably connected to the outer wall of the dryer body; the discharge cover is rotated so that the discharge cover is screwed into the discharge port of the dryer body to close the discharge port of the dryer body, the discharge cover is reversed so that the discharge cover is taken out of the discharge port of the dryer body, so that the raw materials in the drying chamber of the dryer body are discharged through the discharge port, the push cylinder is extended to drive the discharge cover to be lowered through the support plate, and the push cylinder is shortened to drive the discharge cover to be raised through the support plate, thereby reducing the labor intensity of the staff in moving the discharge cover.

[0012] Compared with the prior art, the utility model has the following beneficial effects: when working, a heating medium such as high-temperature steam is input into the heating interlayer of the dryer body and the preheating box, the raw material is added into the preheating chamber of the preheating box through the feeding port of the preheating box for preheating, the feeding port of the preheating box is closed by the box cover, the stirring shaft drives multiple stirring rakes to rotate, and when the stirring rake rotates to the upper part of the dryer body, it pushes the baffle, and the baffle drives the gate plate to rotate, and the discharge port of the preheating box is opened, so that the raw material falls into the drying chamber of the dryer body. After the stirring rake is separated from the baffle, the gate plate is reset to cover the discharge port of the preheating box, thereby realizing intermittent feeding of the preheating box into the dryer body, avoiding the problem of slow heating and uneven heating of the raw material caused by putting too much raw material into the drying chamber of the dryer body at one time, and the raw material preheating and drying are carried out simultaneously, and there is no need to set a special screw feeder, the structure is relatively simple, the cost is reduced, and the practicality is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 It is a front sectional structural schematic diagram of the utility model;

[0016] Figure 4 It is a schematic diagram of the side section structure of the utility model;

[0017] Figure 5 It is a schematic diagram of the structure of the stirring shaft, stirring rake, suction pipe and filter;

[0018] Figure 6 yes Figure 5 A schematic diagram of the local enlarged structure at point A in the middle;

[0019] Figure 7 It is a structural schematic diagram of structures such as a gate, a baffle, an upper stirring plate and an upper stirring blade.

[0020] Markings in the attached figure: 1. dryer body; 2. stirring shaft; 3. stirring rake; 4. preheating box; 5. box cover; 6. gate; 7. baffle; 8. upper stirring plate; 9. upper stirring blade; 10. lower connecting rod; 11. tension spring; 12. upper connecting rod; 13. exhaust pipe; 14. filter; 15. lower stirring rod; 16. rake head; 17. air bag; 18. air nozzle; 19. discharge cover; 20. support plate; 21. push cylinder. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example 1

[0022] like Figures 1 to 4 and Figure 7 As shown, a bran powder dryer comprises a dryer body 1, a stirring shaft 2 and a plurality of stirring rakes 3, a drying chamber is arranged inside the dryer body 1, the stirring shaft 2 is rotatably installed in the drying chamber of the dryer body 1, and a plurality of stirring rakes 3 are arranged on the circumference of the stirring shaft 2; it also comprises a preheating box 4, a box cover 5, a gate plate 6 and a baffle 7, a feed inlet is arranged at the upper part of the dryer body 1, a discharge port is arranged at the lower part of the dryer body 1, both the feed inlet and the discharge port are communicated with the drying chamber, the preheating box 4 is installed on the dryer body 1, and the preheating box 4 A preheating chamber is arranged inside the preheating box 4, a discharge port is arranged at the bottom of the preheating box 4, the discharge port is communicated with the feed port through the dryer body 1, a feeding port is arranged at the top of the preheating box 4, both the discharge port and the feeding port are communicated with the preheating chamber, a box cover 5 is installed on the feeding port of the preheating box 4, the middle part of the gate plate 6 is rotatably connected with the discharge port of the preheating box 4, the gate plate 6 shields the discharge port of the preheating box 4, a baffle plate 7 is arranged at the lower part of the gate plate 6, the lower end of the baffle plate 7 extends into the drying chamber of the dryer body 1, and the baffle plate 7 is aligned with the stirring rake 3; it also includes an upper stirring A mixing plate 8 and a plurality of upper stirring blades 9, the upper stirring plate 8 is mounted on the upper end surface of the gate plate 6, and the plurality of upper stirring blades 9 are mounted on the upper stirring plate 8, and the upper stirring plate 8 and the plurality of upper stirring blades 9 are located in the preheating chamber of the preheating box 4; it also includes a lower connecting rod 10, an upper connecting rod 12 and an exhaust pipe 13, the lower end of the tension spring 11 is connected to the upper stirring plate 8 through the lower connecting rod 10, and the upper end of the tension spring 11 is connected to the upper part of the preheating box 4 through the upper connecting rod 12, and the elastic force of the tension spring 11 pulls the gate plate 6 to cover the discharge port of the preheating box 4; it also includes The dryer body 10 includes two exhaust pipes 13 and two filters 14. The inner ends of the two exhaust pipes 13 are provided with filters 14. The two filters 14 are respectively located in the drying chamber of the dryer body 1 and the preheating chamber of the preheating box 4; the dryer body 10 also includes a discharge cover 19, a support plate 20 and a push cylinder 21. The discharge cover 19 is rotatably screwed in the discharge port of the dryer body 1. One end of the support plate 20 is movably connected to the discharge cover 19, and the other end of the support plate 20 is connected to one end of the push cylinder 21. The other end of the support plate 20 is rotatably connected to the outer wall of the dryer body 1.

[0023] During operation, the discharge cover 19 is rotated so that the discharge cover 19 is screwed into the discharge port of the dryer body 1, the discharge port of the dryer body 1 is closed, and a heating medium such as high-temperature steam is input into the heating interlayer of the dryer body 1 and the preheating box 4. The raw materials are added into the preheating chamber of the preheating box 4 through the feeding port of the preheating box 4 for preheating. The feeding port of the preheating box 4 is closed by the box cover 5. The stirring shaft 2 drives the multiple stirring rakes 3 to rotate. When the stirring rakes 3 rotate to the upper part of the dryer body 1, the baffle 7 is pushed. The baffle 7 drives the gate plate 6 to rotate, opens the discharge port of the preheating box 4, and allows the raw materials to fall into the drying chamber of the dryer body 1. After the stirring rake 3 is separated from the baffle 7, the gate plate 6 is reset to cover the discharge port of the preheating box 4, thereby realizing intermittent feeding of the preheating box 4 into the dryer body 1, avoiding the problem of slow heating and uneven heating of the raw materials caused by too much raw materials being fed into the drying chamber of the dryer body 1 at one time. When the gate plate 6 rotates intermittently, the gate plate 6 drives the upper stirring plate 8 and the plurality of upper stirring blades 9 in the preheating chamber. The stirring rake 3 swings back and forth in the preheating chamber of the heat box 4 to stir the raw materials in the preheating chamber to improve the uniformity of the preheating of the raw materials. When the stirring rake 3 pushes the baffle 7 to drive the gate plate 6 to rotate, the tension spring 11 is stretched. When the stirring rake 3 is separated from the baffle 7, the elastic force of the tension spring 11 causes the rake head 16 to rotate and reset. The two exhaust pipes 13 are connected to an external vacuum pump. The vacuum pump draws a certain vacuum degree in the drying chamber of the dryer body 1 and the preheating chamber of the preheating box 4 through the two exhaust pipes 13 to reduce the boiling point of the water content. The discharge cover 19 is reversed so that the discharge cover 19 is taken out from the discharge port of the dryer body 1, so that the raw materials in the drying chamber of the dryer body 1 are discharged through the discharge port. The push cylinder 21 is extended to drive the discharge cover 19 to be lowered through the support plate 20. The raw materials are preheated and dried simultaneously, and there is no need to set a special screw feeder. The structure is relatively simple and the cost is reduced. Example 2

[0024] like Figure 3 , Figure 5 and Figure 6 As shown, on the basis of Example 1, the stirring rake 3 includes a lower stirring rod 15 and a rake head 16, the inner end of the lower stirring rod 15 is installed on the outer wall of the stirring shaft 2, and the rake head 16 is elastically installed on the outer end of the lower stirring rod 15 through an elastic component, and the outer end of the rake head 16 is in scraping contact with the inner wall of the dryer body 1; the elastic component includes an air bag 17 and an air nozzle 18, the inner end of the rake head 16 is slidably inserted on the outer end of the lower stirring rod 15, the air bag 17 is arranged between the inner end of the rake head 16 and the lower stirring rod 15, and the air nozzle 18 is arranged on the air bag 17, and the air nozzle 18 extends out of the outside of the lower stirring rod 15.

[0025] The stirring shaft 2 drives the lower stirring rod 15 and the rake head 16 to rotate, and the lower stirring rod 15 and the rake head 16 stir the raw materials to make the raw materials more fully heated. The elastic force of the elastic component makes the rake head 16 always scrape the inner wall of the dryer body 1 to prevent the raw materials from sticking to the inner wall of the dryer body 1.

[0026] like Figures 1 to 7 As shown, a bran powder dryer of the utility model, when working, firstly inputs high-temperature steam or other heating medium into the heating interlayer of the dryer body 1 and the preheating box 4, adds the raw material into the preheating chamber of the preheating box 4 through the feeding port of the preheating box 4 for preheating, and closes the feeding port of the preheating box 4 through the box cover 5, and then the stirring shaft 2 drives multiple stirring rakes 3 to rotate, and when the stirring rakes 3 rotate to the upper part of the dryer body 1, they push the baffle 7, and the baffle 7 drives the gate 6 to rotate, and the discharge port of the preheating box 4 is opened, so that the raw material falls into the drying chamber of the dryer body 1, and after the stirring rake 3 is separated from the baffle 7, the elastic force of the tension spring 11 causes the rake head 16 to rotate and reset to cover the discharge port of the preheating box 4, thereby realizing intermittent feeding of the preheating box 4 into the dryer body 1, and then the gate 6 intermittently rotates. When the preheating chamber 4 is in motion, the gate plate 6 drives the upper stirring plate 8 and the plurality of upper stirring blades 9 to swing back and forth in the preheating chamber of the preheating box 4 to stir the raw materials in the preheating chamber. The stirring shaft 2 drives the lower stirring rod 15 and the rake head 16 to rotate, and the lower stirring rod 15 and the rake head 16 stir the raw materials to make the raw materials more fully heated. The elastic force of the airbag 17 makes the rake head 16 always scrape the inner wall of the dryer body 1 to prevent the raw materials from sticking to the inner wall of the dryer body 1. The evaporated water vapor is filtered by the two filters 14 and then discharged through the two exhaust pipes 13. Finally, after the drying is completed, the discharge cover 19 is reversed so that the discharge cover 19 is taken out from the discharge port of the dryer body 1. At the same time, the push cylinder 21 extends and drives the discharge cover 19 to be lowered through the support plate 20, so that the raw materials in the drying chamber of the dryer body 1 can be discharged through the discharge port.

[0027] The main functions achieved by this utility model are:

[0028] 1. Realize raw material preheating and intermittent feeding, no need for special feeder, simple structure and low cost;

[0029] 2. Prevent the raw materials from sticking to the inner wall of the dryer body 1 by scraping the inner wall of the dryer body 1;

[0030] 3. Improve heating uniformity by stirring the dried and preheated raw materials.

[0031] The bran powder dryer of the utility model has common mechanical installation, connection or setting methods, which can be implemented as long as they can achieve beneficial effects. The dryer body 1, stirring shaft 2, stirring rake 3, preheating box 4, box cover 5, tension spring 11, exhaust pipe 13, filter 14, air bag 17, air nozzle 18, discharge cover 19 and push cylinder 21 of the bran powder dryer of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0032] All technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A bran powder dryer, comprising a dryer body (1), a stirring shaft (2) and a plurality of stirring rakes (3), wherein a drying chamber is arranged inside the dryer body (1), the stirring shaft (2) is rotatably mounted in the drying chamber of the dryer body (1), and a plurality of stirring rakes (3) are arranged on the circumference of the stirring shaft (2); characterized in that: The dryer also comprises a preheating box (4), a box cover (5), a gate plate (6) and a baffle plate (7); a feed port is arranged at the upper part of the dryer body (1); a discharge port is arranged at the lower part of the dryer body (1); both the feed port and the discharge port are communicated with the drying chamber; the preheating box (4) is mounted on the dryer body (1); a preheating chamber is arranged inside the preheating box (4); a discharge port is arranged at the bottom of the preheating box (4); the discharge port is communicated with the feed port through the dryer body (1); A feeding port is arranged at the top of the preheating box (4), and the discharge port and the feeding port are both connected to the preheating chamber. The box cover (5) is installed on the feeding port of the preheating box (4), and the middle part of the gate plate (6) is rotatably connected to the discharge port of the preheating box (4). The gate plate (6) shields the discharge port of the preheating box (4). A baffle plate (7) is arranged at the lower part of the gate plate (6), and the lower end of the baffle plate (7) extends into the drying chamber of the dryer body (1), and the baffle plate (7) is aligned with the stirring rake (3).

2. A bran powder dryer as claimed in claim 1, characterized in that: It also includes an upper stirring plate (8) and a plurality of upper stirring blades (9), the upper stirring plate (8) being mounted on the upper end surface of the gate plate (6), the plurality of upper stirring blades (9) being mounted on the upper stirring plate (8), and the upper stirring plate (8) and the plurality of upper stirring blades (9) being located in the preheating chamber of the preheating box (4).

3. A bran powder dryer as claimed in claim 2, characterized in that: It also includes a lower connecting rod (10), an upper connecting rod (12) and an exhaust pipe (13); the lower end of the tension spring (11) is connected to the upper stirring plate (8) via the lower connecting rod (10); the upper end of the tension spring (11) is connected to the upper part of the preheating box (4) via the upper connecting rod (12); the elastic force of the tension spring (11) pulls the gate plate (6) to cover the discharge port of the preheating box (4).

4. A bran powder dryer as claimed in claim 1, characterized in that: It also comprises two air extraction pipes (13) and two filters (14), the inner ends of the two air extraction pipes (13) being provided with filters (14), and the two filters (14) being respectively located in the drying chamber of the dryer body (1) and the preheating chamber of the preheating box (4).

5. A bran powder dryer as claimed in claim 1, characterized in that: The stirring rake (3) comprises a lower stirring rod (15) and a rake head (16), wherein the inner end of the lower stirring rod (15) is mounted on the outer wall of the stirring shaft (2), and the rake head (16) is elastically mounted on the outer end of the lower stirring rod (15) via an elastic component, and the outer end of the rake head (16) is in scraping contact with the inner wall of the dryer body (1).

6. A bran powder dryer as claimed in claim 5, characterized in that: The elastic component comprises an air bag (17) and an air nozzle (18). The inner end of the rake head (16) is slidably inserted into the outer end of the lower stirring rod (15). The air bag (17) is arranged between the inner end of the rake head (16) and the lower stirring rod (15). The air nozzle (18) is arranged on the air bag (17) and extends out of the outer side of the lower stirring rod (15).

7. A bran powder dryer as claimed in claim 1, characterized in that: The dryer body (1) further comprises a discharge cover (19), a support plate (20) and a push cylinder (21); the discharge cover (19) is rotatably screwed into the discharge port of the dryer body (1); one end of the support plate (20) is movably connected to the discharge cover (19); the other end of the support plate (20) is connected to one end of the push cylinder (21); and the other end of the support plate (20) is rotatably connected to the outer wall of the dryer body (1).

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