CN219474150U

CN219474150U - Pellet rotary drum type pre-dryer

Info

Publication number: CN219474150U
Application number: CN202320347023.4U
Authority: CN
Inventors: 罗吉; 刘贵中; 李坤波; 庞杜贤; 霍嘉茵; 杨剑湖
Original assignee: Sinopharm Group Feng Liao Xing Foshan Pharmaceutical Co Ltd
Current assignee: Sinopharm Group Feng Liao Xing Foshan Pharmaceutical Co Ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-08-04
Anticipated expiration: 2033-02-28

Abstract

The utility model discloses a rotary drum type pre-dryer for pellets, which relates to the technical field of drying and aims at solving the problems that a plurality of pellets are easy to adhere and difficult to dry; a plurality of compartments are arranged in the box body, each rotary drum is positioned in each compartment, one end of each rotary drum is provided with a first discharge hole, and the other end of each rotary drum is provided with a second feed hole; and a vibration conveyor is arranged between two adjacent rotating drums which are connected in series. Fresh air enters a blower, the air is heated by a heater and then is blown into an air chamber, hot air in the air chamber is led into a rotary drum, the hot air dries pellets in the rotary drum, and the dried waste heat air enters the air chamber again after being purified by a high-efficiency filter and a medium-efficiency filter through the blower.

Description

Pellet rotary drum type pre-dryer

Technical Field

The utility model relates to the technical field of drying, in particular to a rotary drum type pre-dryer for pellets.

Background

The Chinese patent medicine is indispensable to be pills. The pill comprises Chinese medicinal honeyed pill, water honeyed pill, and water pill. In the manufacturing process, the pellets are easy to be adhered two by two or more, and are not easy to be dried uniformly. Thus, the pellets need to be stirred frequently during the drying process. The method has no obvious effect, and reduces the production efficiency. At present, there is no effective solution to how to dry such granular pellets uniformly.

Disclosure of Invention

The utility model aims to provide a rotary drum type pre-dryer for pellets, which can realize rapid drying of the pellets, reduce the production cost and be used for mass production.

In order to achieve the above purpose, the utility model provides a rotary drum type pre-dryer for pellets, which comprises a box body, wherein one side of the box body is provided with a second discharge hole, the other side of the box body is provided with a first feed hole, and at least two rotary drums which are sequentially connected in series are arranged in the box body along the conveying direction of the pellets; a plurality of compartments are arranged in the box body, each rotary drum is positioned in each compartment, one end of each rotary drum is provided with a first discharge hole, and the other end of each rotary drum is provided with a second feed hole; a vibration conveyor is arranged between two adjacent drums connected in series; one side of each rotary cylinder is provided with a hot air circulation device, one side of the hot air circulation device is provided with a dehumidifying device, and the dehumidifying device is communicated with the compartment; the second feed port of the rotary drum positioned at the front end along the conveying direction of the pellets is communicated with the first feed port on the box body, and the first discharge port of the rotary drum positioned at the rear end along the conveying direction of the pellets is communicated with the second discharge port; the side wall of the rotary drum is provided with a plurality of through holes; also comprises an electrical control device.

As a further improvement of the utility model, the hot air circulation device comprises a waste heat recovery pipeline, a blower, a medium-efficiency filter, a steam heat exchanger, a high-efficiency filter and an air chamber which are sequentially communicated, wherein one side of the compartment is communicated with the input end of the waste heat recovery pipeline, and the output end of the air chamber is communicated with the side wall of the rotary drum and is positioned at one side of the rotary drum.

As a further improvement of the utility model, the input end of the blower is also provided with a fresh air inlet for inputting fresh air.

As a further improvement of the utility model, the dehumidifying device comprises a dehumidifying branch pipeline, a dehumidifying fan, a cyclone separator and a dehumidifying main pipeline which are communicated in sequence, wherein the input end of the dehumidifying fan is connected with the passage in the box body through the dehumidifying branch pipeline.

As a further improvement of the utility model, one end of the steam heat exchanger is provided with a steam inlet, and the other end is provided with a steam condensate outlet.

As a further improvement of the utility model, any one of the drums is also internally provided with a material guide plate and a baffle plate, the material guide plate and the baffle plate are fixedly connected to the inner wall of the drum, the material guide plate is spirally arranged along the axis of the drum, and the baffle plate is arranged on the inner wall of the drum in a segmented manner.

As a further development of the utility model, the at least two serially connected drums are arranged in a row, the number of which is more than two.

As a further improvement of the utility model, the electric control device comprises a power distribution cabinet arranged at one end of the box body and a display screen arranged above the power distribution cabinet, and the power distribution cabinet is electrically connected with the display screen; the hot air circulation device and the dehumidifying device are electrically connected with the electric control device.

Advantageous effects

Compared with the prior art, the pill rotary drum type pre-dryer has the advantages that:

1. the air circulation device is utilized to recycle the waste heat air, so that the waste heat air is reduced to be discharged outside, and the energy utilization efficiency is improved. Fresh air enters a blower, the air is heated by a heater and then is blown into an air chamber, hot air in the air chamber is led into a rotary drum, the hot air dries pellets in the rotary drum, and the dried waste heat air enters the air chamber again after being purified by a high-efficiency filter and a medium-efficiency filter through the blower. The fin tube steam heat exchangers of the four drums are mainly used for heating air in a drying system, the working pressure of steam is 0.6MPa, and the temperature of hot air is controlled at 100 ℃. In the heat exchange process, when air flows through the finned tube heat exchanger, the middle part of the finned tube only has a small amount of radiant heat transfer, and the heat exchange effect is not obvious. During the air heating process, fresh air which is not subjected to heat exchange can be neutralized with heated hot air passing through the middle of the fins, and the heat exchange effect is reduced. According to 5000m3/h air inlet heat exchange area calculation, the air circulation device is utilized to recycle the waste heat air, so that the influence of excessive fresh air is reduced, the overall heat exchange effect is improved, and the steam usage amount is saved. Compared with the steam radiator of the boiling dryer currently used by the company, the steam radiator has the advantages that the area of the air inlet is 5000m < 3 >/h for heat exchange, the steam consumption per month is about 40 tons, and the steam consumption of the pellet drum type pre-dryer for recycling the waste heat air by adopting the air circulation device is about 25 tons, so that the energy is saved by about 37.5 percent.

2. The fresh air inlet of the blower can supplement fresh air and the steam heat exchanger is connected with steam, so that the temperature of the air can be improved rapidly, and heat energy required by drying the pellets is given. One end of the steam heat exchanger is also provided with a steam condensate outlet which can be used for discharging steam condensate.

3. The humidity discharging device is communicated with the box body, and air with higher humidity in the box body can be discharged through a humidity discharging branch pipeline, a humidity discharging fan, a cyclone separator and a humidity discharging main pipeline which are communicated in sequence, so that the humidity in the box body is kept at a certain level, and the quick drying of the pellets is more facilitated.

4. The stock guide and baffle fixed connection are on the rotary drum inner wall. The pellets run in the guide plate, and the baffle can block the pellets to roll, so that the path of the pellets is prolonged, and uniform drying can be better carried out. The guide plate has guiding function on the path of the pellets, so that the pellets can be conveyed only in one direction.

5. The automatic cleaning spraying system is arranged in the pellet drum type pre-dryer, and the automatic cleaning spraying system can clean the inside of the equipment without dead angles through program automatic control, so that the problem of manual complicated cleaning is solved.

The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a pellet drum pre-dryer;

FIG. 2 is a schematic view of the structure of a pellet drum pre-dryer;

FIG. 3 is a side view of a pellet drum pre-dryer;

FIG. 4 is a cross-sectional view of the drum;

fig. 5 is a top view of the drum.

Reference numerals:

the device comprises a 1-box body, a 2-compartment, a 3-rotary drum, a 4-high efficiency filter, a 5-steam heat exchanger, a 6-medium efficiency filter, a 7-blower, an 8-air chamber, a 9-moisture removal main pipeline, a 10-moisture removal blower, an 11-power distribution cabinet, a 12-display screen, a 13-servo motor, a 14-vibration conveyor, a 15-material guide plate, a 16-partition plate, a 17-through hole, a 18-first material outlet, a 19-second material outlet, a 20-cyclone separator, a 21-moisture removal pipeline and a 22-waste heat recovery pipeline.

Detailed Description

Embodiments of the present utility model will now be described with reference to the accompanying drawings.

Examples

The embodiment of the utility model is shown in fig. 1 to 5, and the rotary drum type pellet pre-dryer comprises a box body 1, wherein one side of the box body 1 is provided with a second discharge hole 19, and the other side of the box body is provided with a first feed hole. The at least two serially connected drums 3 are arranged in a row, and the number of the drums arranged in the row is more than two. In this embodiment, one column is provided in two columns, and four drums 3 are provided in total. A plurality of compartments 2 are arranged in the box body 1, and each rotating cylinder 3 is positioned in each compartment 2. One end of each rotary drum 3 is provided with a first discharge port 18, and the other end is provided with a second feed port. A vibrating conveyor 14 is arranged between two adjacent drums 3 connected in series, and the vibrating conveyor 14 is used for unmanned conveying between the adjacent drums 3.

One side of each drum 3 is provided with a hot air circulation device, one side of which is provided with a dehumidifying device, which is in communication with the compartment 2. The second feed port of the rotary drum 3 positioned at the front end along the conveying direction of the pellets is communicated with the first feed port on the box body 1, and the first discharge port 18 of the rotary drum 3 positioned at the rear end along the conveying direction of the pellets is communicated with the second discharge port 19.

Any one still be equipped with stock guide 15 and baffle 16 in the rotary drum 3, stock guide 15 and baffle 16 fixed connection are on the rotary drum 3 inner wall, and stock guide 15 is arranged along the axis spiral of rotary drum 3 and extends to the second feed inlet from the first discharge gate 18 of rotary drum 3, and baffle 16 segmentation sets up on the inner wall of rotary drum 3. The baffle 16 may block the pellets from tumbling during the drying process. The side wall of the drum 3 is provided with a plurality of through holes 17. The wind in the wind chamber 8 can enter the drum 3 through the through holes 17. The drying path of the pellets is longer, which is more beneficial to uniform drying.

The hot air circulation device comprises a waste heat recovery pipeline 22, a blower 7, a medium-efficiency filter 6, a steam heat exchanger 5, a high-efficiency filter 4 and an air chamber 8 which are sequentially communicated, one side of the compartment 2 is communicated with the input end of the waste heat recovery pipeline 22, and the output end of the air chamber 8 is communicated with the side wall of the rotary drum 3 and is positioned on one side of the rotary drum 3. And one end of the 5 is provided with a steam inlet, and the other end is provided with a steam condensate outlet. The steam can be connected to convert the input air into hot air to provide the required heat energy for drying the pellets.

The dehumidifying device comprises a dehumidifying component pipeline 21, a dehumidifying fan 10, a cyclone separator 20 and a dehumidifying main pipeline 9 which are sequentially communicated, wherein the input end of the dehumidifying fan 10 is connected with the inner passage of the box body 1 through the dehumidifying component pipeline 21.

The automatic cleaning spray system is further arranged in the pellet drum type pre-dryer, the automatic cleaning spray system comprises a cleaning liquid conveying pipe and a cleaning liquid nozzle, the cleaning liquid conveying pipe is used for supplying liquid through a pump, the cleaning liquid nozzles are multiple and are arranged on the inner wall of the box body 1, the cleaning liquid nozzle faces the drum 3, the sprayed cleaning liquid can penetrate through the through holes 17 to enter the drum 3, and the drum 3 can be discharged from the through holes 17 to clean the drum 3. The bottom of the box body 1 is provided with a cleaning liquid discharge hole. The pump of the automatic cleaning spraying system is electrically connected with the electric control device.

The pellet drum pre-dryer is also provided with an electrical control device. The electric control device comprises a power distribution cabinet 11 arranged at one end of the box body 1 and a display screen 12 arranged above the power distribution cabinet 11, and the power distribution cabinet 11 is electrically connected with the display screen 12. The hot air circulation device and the dehumidifying device are electrically connected with the electric control device.

The input end of the blower 7 is provided with a fresh air inlet, air entering the blower 7 from the fresh air inlet is mixed with circulating air, the mixed air passes through the steam heat exchanger 5, steam is introduced into one end of the steam heat exchanger 5 to convert the mixed air into hot air, and the hot air is introduced into the air chamber 8 to dry the pellets in the rotary drum 3. The dried waste heat air enters the medium-efficiency filter 6 and the high-efficiency filter 4 through the blower and enters the air chamber 8 again after being purified. The temperature of the air chamber 8 is set on the display screen 12, and when the temperature of the air chamber 8 reaches the required temperature, the steam heat exchanger 5 is automatically closed. When the humidity of the air in the box body 1 is too high, the air with higher humidity sequentially passes through the dehumidifying separating pipeline 21 and the cyclone separator 10 to be dehumidified, and then is discharged outwards through the dehumidifying main pipeline 9.

The utility model has been described in connection with the preferred embodiments, but the utility model is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the utility model.

Claims

1. The rotary drum type pre-dryer for the pellets is characterized by comprising a box body (1), wherein one side of the box body (1) is provided with a second discharge hole (19), the other side of the box body is provided with a first feed hole, and at least two rotary drums (3) which are sequentially connected in series are arranged in the box body (1) along the conveying direction of the pellets; a plurality of compartments (2) are arranged in the box body (1), each rotary drum (3) is positioned in each compartment (2), one end of each rotary drum (3) is provided with a first discharge hole (18), and the other end is provided with a second feed hole; a vibration conveyor (14) is arranged between two adjacent drums (3) connected in series; a hot air circulation device is arranged on one side of each rotary drum (3), a moisture removing device is arranged on one side of the hot air circulation device, and the moisture removing devices are communicated with the compartments (2); the second feed port of the rotary drum (3) positioned at the front end along the conveying direction of the pellets is communicated with the first feed port on the box body (1), and the first discharge port (18) of the rotary drum (3) positioned at the rear end along the conveying direction of the pellets is communicated with the second discharge port (19); the side wall of the rotary drum (3) is provided with a plurality of through holes (17); also comprises an electrical control device.

2. A pellet drum pre-dryer as claimed in claim 1, characterized in that the hot air circulation means comprises a waste heat recovery pipe (22), a blower (7), a medium effect filter (6), a steam heat exchanger (5), a high effect filter (4), an air chamber (8) which are communicated in sequence, one side of the compartment (2) being communicated with the input end of the waste heat recovery pipe (22), the output end of the air chamber (8) being communicated with the side wall of the drum (3) and being located at one side of the drum (3).

3. A pellet drum pre-dryer as claimed in claim 2, characterized in that the inlet end of the blower (7) is also provided with a fresh air inlet.

4. A pellet drum pre-dryer as claimed in claim 2, characterized in that the dehumidifying device comprises a dehumidifying branch pipe (21), a dehumidifying fan (10), a cyclone separator (20) and a dehumidifying main pipe (9) which are communicated in sequence, wherein the input end of the dehumidifying fan (10) is connected with the internal passage of the box body (1) through the dehumidifying branch pipe (21).

5. A pellet drum pre-dryer as claimed in claim 2, characterized in that one end of the steam heat exchanger (5) is provided with a steam inlet and the other end is provided with a steam condensate outlet.

6. The pellet drum pre-dryer as claimed in claim 1, characterized in that a guide plate (15) and a partition plate (16) are further arranged in any one of the drums (3), the guide plate (15) and the partition plate (16) are fixedly connected to the inner wall of the drum (3), the guide plate (15) is spirally arranged along the axis of the drum (3), and the partition plate (16) is arranged on the inner wall of the drum (3) in a segmented manner.

7. A pellet drum pre-dryer as claimed in claim 1, characterized in that said at least two drums (3) connected in series are in a row, the number of which is two or more.

8. A pellet drum pre-dryer as claimed in claim 1, characterized in that said electrical control means comprise a power distribution cabinet (11) arranged at one end of the casing (1) and a display screen (12) above the power distribution cabinet (11), said power distribution cabinet (11) being electrically connected to the display screen (12); the hot air circulation device and the dehumidifying device are electrically connected with the electric control device.

9. A pellet drum pre-dryer as claimed in claim 1, further comprising an automatic cleaning spray system comprising a cleaning liquid delivery pipe and cleaning liquid nozzles connected, the cleaning liquid nozzles being plural and arranged on the inner wall of the tank (1), the cleaning liquid nozzles being directed towards the drum (3); the bottom of the box body (1) is provided with a cleaning liquid discharge hole.