CN212362689U

CN212362689U - Rotary drum dryer

Info

Publication number: CN212362689U
Application number: CN202020512303.2U
Authority: CN
Inventors: 孙敏; 马晓建; 李洪亮
Original assignee: Shanghai Minjian Environmental Protection Technology Co ltd
Current assignee: Shanghai Minjian Environmental Protection Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2021-01-15
Anticipated expiration: 2030-04-09

Abstract

The utility model provides a rotary drum dryer, which comprises an outer drum, wherein the outer drum is obliquely arranged, a rotary drum dryer is arranged in the outer drum, the rotary drum dryer is hollow, and a plurality of shoveling plates with circumferential arrays are arranged in the rotary drum dryer; one end of the outer cylinder is provided with a material inlet, and the other end of the outer cylinder is provided with a material outlet; the material inlet extends into one end of the rotary drum dryer, a spoke type support frame is fixedly connected in the other end of the rotary drum dryer, a transmission shaft is fixedly connected in the middle of the spoke type support frame, and the transmission shaft extends out of the outer cylinder; the two ends of the outer cylinder are respectively provided with a drying medium inlet and a drying medium outlet, and a plurality of annular sealing teeth which are sequentially arranged are arranged between the outer wall of the rotary drum dryer close to the drying medium inlet and the inner wall of the outer cylinder. The utility model discloses a rotary drum desicator changes the rotary drum tip dynamic seal of traditional rotary drum desicator into the dynamic seal of transmission shaft and bearing, simple structure, and is sealed effectual, can guarantee that the production process does not have gas leakage.

Description

Rotary drum dryer

Technical Field

The utility model relates to a drying equipment field especially relates to a rotary drum desicator.

Background

Drying is the operation of using thermal energy to vaporize moisture (water or other solvent) in a wet material, and removing the moisture or vapor by air flow or by vacuum pumping to obtain a solid product. In various production processes of chemical industry, medicine, environmental protection and the like, in order to save the consumption of heat energy, most of moisture in wet materials is usually removed by pressing, filtering or centrifugal separation and other economic mechanical methods as much as possible, and then the wet materials are dried to prepare products meeting the requirements.

The drying process is completed in a dryer. There are many types of dryers, of which a drum dryer is one type that is commonly used. The drum dryer is usually operated in a countercurrent manner with direct heating by means of hot air.

The drum dryer is a rotating drum that is slightly inclined to the horizontal, material is fed from the upper end of the drum, and hot air enters from the lower end into countercurrent contact with the material. Along with the rotation of the cylinder, the material is dried and sent out when the material moves to the lower end under the action of gravity. The inner wall of the cylinder is provided with a shoveling plate which is used for shoveling and sprinkling the materials, so that the contact surface of the materials and the airflow is increased to improve the drying rate, and the materials can move from one end of the cylinder to the other end.

However, the existing drum dryer has the defect that the tightness is not easy to ensure, so that gas leakage is caused.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a rotary drum dryer for solving the problem of gas leakage caused by poor sealing performance in the prior art.

In order to solve the technical problem, the utility model discloses a realize according to following mode: a drum dryer comprising an outer tub, the outer tub being placed obliquely; two ends of the outer barrel are respectively connected with an end cover; a rotary drum dryer is arranged in the outer cylinder, the rotary drum dryer is hollow, and a plurality of shoveling plates in a circumferential array are arranged in the rotary drum dryer; one end of the outer barrel is provided with a material inlet, and the other end of the outer barrel is provided with a material outlet; the material inlet extends into one end of the rotary drum dryer, a spoke type support frame is fixedly connected in the other end of the rotary drum dryer, a transmission shaft is fixedly connected in the middle of the spoke type support frame, and the transmission shaft penetrates through the end cover and extends out of the outer cylinder; a plurality of positioning rings are sleeved outside the rotary drum dryer; the inner wall of the outer cylinder is provided with a plurality of riding wheels, and the rotary cylinder dryer is placed on the riding wheels; the two ends of the outer cylinder are respectively provided with a drying medium inlet and a drying medium outlet, and a plurality of annular sealing teeth which are sequentially arranged are arranged between the outer wall of the rotary drum dryer close to the drying medium inlet and the inner wall of the outer cylinder.

Further, one end of the material inlet is arranged on an end cover at one end of the outer cylinder, and the other end of the material inlet is communicated with the interior of the rotary cylinder dryer; one end of the material outlet is arranged on the outer side of the bottom of the barrel at the other end of the outer barrel, and the other end of the material outlet is connected to the inner wall of the outer barrel.

Further, the drying medium outlet is arranged at the upper part of the cylinder body at one end of the outer cylinder and is positioned at the same side of the material inlet; the drying medium inlet is arranged on the end cover at the other end of the outer barrel and is positioned at the same side of the material outlet.

Further, the drying medium outlet is arranged at the upper part of the cylinder body at one end of the outer cylinder and is positioned at the same side of the material outlet; the drying medium inlet is arranged on the end cover at the other end of the outer barrel and is positioned at the same side of the material inlet.

Furthermore, a bearing seat is arranged on an end cover of the outer cylinder, a bearing is arranged in the bearing seat, and the transmission shaft penetrates through the bearing and extends out of the outer cylinder.

Further, the number of the positioning rings is 1.

Further, the number of the riding wheels is 2.

As above, the utility model discloses a rotary drum desicator changes the rotary drum tip dynamic seal of traditional rotary drum desicator into the dynamic seal of transmission shaft and bearing, simple structure, and is sealed effectual, can guarantee that the production process has no gas leakage.

Drawings

FIG. 1 is a schematic diagram of a drum dryer according to an embodiment of the present invention;

FIG. 2 shows a side view of a drum dryer in an embodiment of the present invention;

fig. 3 is a schematic view of a drum dryer in an embodiment of the present invention.

Reference is made to the following in corresponding reference numbers in the drawings of the specification:

the device comprises a drying medium outlet 1, a material inlet 2, a positioning ring 3, an outer cylinder 4, a rotary drum dryer 5, annular sealing teeth 6, a spoke type support frame 7, a transmission shaft 8, a bearing seat 9, a drying medium inlet 10, a material outlet 11, a shoveling plate 12 and a riding wheel 13.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1 to 3. It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present application are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, change of the ratio relationship or adjustment of the sizes should still fall within the scope of the present invention without affecting the functions and the achievable purposes of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

As shown in fig. 1 to 3, the present invention provides a drum dryer, which comprises an outer drum 4, wherein the outer drum 4 is disposed obliquely. The two ends of the outer cylinder 4 are respectively connected with an end cover, a rotary cylinder dryer 5 is arranged in the outer cylinder 4, the rotary cylinder dryer 5 is hollow, and a plurality of shoveling plates 12 in a circumferential array are arranged in the rotary cylinder dryer 5. One end of the outer cylinder 4 is provided with a material inlet 2, and the other end is provided with a material outlet 11. The material inlet 2 extends into one end of the rotary drum dryer 5, a spoke type support frame 7 is fixedly connected in the other end of the rotary drum dryer 5, a transmission shaft 8 is fixedly connected in the middle of the spoke type support frame 7, and the transmission shaft 8 penetrates through the end cover and extends out of the outer barrel 4. The outer sleeve of the rotary drum dryer 5 is provided with 1 positioning ring 3. The inner wall of the outer cylinder 4 is provided with 2 riding wheels 13, and the rotary drum dryer 5 is arranged on the riding wheels 13. Both the positioning ring 3 and the idler 13 increase the stability when the drum dryer is rotating.

One end of the material inlet 2 is arranged on an end cover at one end of the outer cylinder 4, or can be arranged on a cylinder body at one end of the outer cylinder 4, and the other end of the material inlet is communicated with the interior of the rotary cylinder dryer 5. One end of the material outlet 11 is arranged at the outer side of the bottom of the outer barrel 4 at the other end, and the other end is connected with the inner wall of the outer barrel 4.

The drying medium outlet 1 is arranged at the upper part of the cylinder at one end of the outer cylinder 4 and is positioned at the same side of the material outlet 11; the drying medium inlet 10 is arranged on the end cover at the other end of the outer cylinder 4 and is positioned at the same side of the material inlet 2. The drying medium outlet 1 and the drying medium inlet 10 are positioned such that the drying medium and the material enter the drum dryer 5 in the same direction.

The drying medium outlet 1 is arranged at the upper part of the cylinder at one end of the outer cylinder 4 and is positioned at the same side of the material inlet 2; the drying medium inlet 10 is arranged on the end cover at the other end of the outer cylinder 4 and is positioned at the same side of the material outlet 11. The drying medium outlet 1 and the drying medium inlet 10 are positioned such that the drying medium and the material enter the drum dryer 5 in counter-current.

The two ends of the outer cylinder 4 are respectively provided with a drying medium inlet 10 and a drying medium outlet 1, and a plurality of annular sealing teeth 6 which are sequentially arranged are arranged between the outer wall of the rotary drum dryer 5 close to the drying medium inlet 10 and the inner wall of the outer cylinder 4. The annular sealing teeth 6 form labyrinth seal, a series of cut-off gaps and expansion cavities are formed between the annular sealing teeth 6, and the sealed drying medium enters from the drying medium inlet 10 and then generates throttling effect when passing through the gaps of the zigzag labyrinth, so that the purpose of leakage resistance is achieved, and gas short circuit is prevented.

The end cover of the outer cylinder 4 is provided with a bearing seat 9, a bearing is arranged in the bearing seat 9, the transmission shaft 8 penetrates through the bearing to extend out of the outer cylinder 4 and is connected to a power mechanical device, and the transmission shaft 8 is driven to rotate through the power mechanical device, so that the whole rotary drum dryer 5 is driven to rotate.

The rotary drum dryer 5 is driven by a power mechanical device to rotate in the horizontal direction, and materials enter the rotary drum dryer from the material inlet 2 and fall into the rotary drum dryer 5. Under the action of the rotation of the shoveling plate 12, the material is thrown out and falls downwards. Due to the inclined arrangement of the drum dryer 5, the material is simultaneously moved in the direction of the drum dryer axis. Due to repeated throwing, the material is uniformly dispersed. The drying medium enters the rotary drum dryer from the drying medium inlet 10, and only flows in the rotary drum dryer 5 under the action of the annular sealing teeth 6 to contact with the materials for heat transfer. The moisture in the material is discharged from the drying medium outlet 1 together with the drying medium after being gasified, and the dried material is discharged from the material outlet 11.

To sum up, the utility model discloses a rotary drum desicator changes the rotary drum tip dynamic seal of traditional rotary drum desicator into the dynamic seal of transmission shaft and bearing, simple structure, and is sealed effectual, can guarantee that the production process has no gas leakage. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A drum dryer, characterized by comprising an outer tub (4), the outer tub (4) being placed obliquely; two ends of the outer cylinder (4) are respectively connected with an end cover; a rotary drum dryer (5) is arranged in the outer cylinder (4), the rotary drum dryer (5) is hollow, and a plurality of shoveling plates (12) in a circumferential array are arranged in the rotary drum dryer (5); one end of the outer cylinder (4) is provided with a material inlet (2), and the other end is provided with a material outlet (11); the material inlet (2) extends into one end of the rotary drum dryer (5), a spoke type support frame (7) is fixedly connected into the other end of the rotary drum dryer (5), a transmission shaft (8) is fixedly connected to the middle position of the spoke type support frame (7), and the transmission shaft (8) penetrates through the end cover and extends out of the outer cylinder (4); a plurality of positioning rings (3) are sleeved outside the rotary drum dryer (5); a plurality of riding wheels (13) are mounted on the inner wall of the outer cylinder (4), and the rotary cylinder dryer (5) is placed on the riding wheels (13); a drying medium inlet (10) and a drying medium outlet (1) are respectively arranged at two ends of the outer cylinder (4), and a plurality of annular sealing teeth (6) which are sequentially arranged are arranged between the outer wall of the rotary drum dryer (5) close to the drying medium inlet (10) and the inner wall of the outer cylinder (4).

2. A drum dryer according to claim 1, characterized in that the material inlet (2) is arranged with one end on an end cap at one end of the outer drum (4) and with the other end opening into the drum dryer (5); one end of the material outlet (11) is arranged on the outer side of the bottom of the outer barrel (4) at the other end, and the other end is connected to the inner wall of the outer barrel (4).

3. A drum dryer according to claim 1, characterized in that the drying medium outlet (1) is arranged in the upper part of the drum at one end of the outer drum (4) on the same side as the material inlet (2); the drying medium inlet (10) is arranged on the end cover at the other end of the outer barrel (4) and is positioned at the same side of the material outlet (11).

4. A drum dryer according to claim 1, characterized in that the drying medium outlet (1) is arranged in the upper part of the drum at one end of the outer drum (4) on the same side as the material outlet (11); the drying medium inlet (10) is arranged on the end cover at the other end of the outer barrel (4) and is positioned at the same side of the material inlet (2).

5. A drum dryer according to claim 1, characterized in that a bearing block (9) is arranged on the end cover of the outer drum (4), a bearing is arranged in the bearing block (9), and the drive shaft (8) extends out of the outer drum (4) through the bearing.

6. A drum dryer according to claim 1, characterized in that the number of positioning rings (3) is 1.

7. A drum dryer according to claim 6, characterized in that the number of idlers (13) is 2.