Drum-type dryer capable of reducing ash and dust
By setting up a heat exchange channel and fins inside the drum, and utilizing the indirect contact between hot air and materials, the problems of dust leakage and material contamination in drum dryers are solved, achieving efficient and environmentally friendly material drying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-27
AI Technical Summary
Existing rotary drum dryers still suffer from dust leakage when sealed, leading to environmental pollution. Furthermore, direct contact between hot air and materials may contaminate them, affecting drying quality.
A heat transfer channel is set inside the drum, allowing hot air to transfer heat to the material through the channel, avoiding direct contact between hot air and material. At the same time, the inclined design and fins enhance material mixing and heat transfer. Exhaust gas is directly treated before being discharged, reducing dust leakage.
It effectively reduces dust leakage, protects the environment, avoids material contamination, improves the quality of material drying, and achieves a highly efficient drying process without direct contact.
Smart Images
Figure CN224050871U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to drying equipment field especially relates to a drum -type dryer that reduces ash and dust. BACKGROUND
[0002] The drum dryer is mainly composed of a drum, hot air enters from one end of the drum and is extracted from the other end, a corresponding air blower and an air induction fan are required, the drying method is that hot air directly heats the material, the drum dryer is reliable in operation, has large processing capacity and is widely used in the fields of coal washing, chemical industry, chemical fertilizer, quartz sand and sugar, but the existing drum dryer is open, that is, both sides are open, hot air passes through the drum, a large amount of dust is brought out, causes serious pollution to the environment, a shell is arranged at one end of the drum to be sealingly connected, hot air is directly introduced to a dust removal device such as a bag-type dust collector, but even if the sealing connection is achieved, in actual work, complete sealing cannot be achieved, a lot of dust still leaks out of the gap, causes pollution to the environment and affects the health of operators, in addition, hot air is generally sent out through a combustion device, some dust generated by combustion is also carried in the hot air, directly contacts the material and also has the risk of polluting the material, especially some coal, sugar and chemical raw materials, dust in the hot air is brought into the material, and the quality of the material is affected. CONTENT
[0003] The utility model aims at providing a drum -type dryer that reduces ash and dust, to solve the technical problem of how to reduce pollution to the environment and improve the quality of dried material.
[0004] To achieve the above-mentioned purpose, the specific technical scheme of the drum -type dryer that reduces ash and dust is as follows:
[0005] The drum -type dryer that reduces ash and dust comprises a drum main body, a feeding end and a discharging end are respectively arranged at the two sides of the drum main body, a shell is sealingly connected to rotate at the feeding end and the discharging end, a feeding port and a discharging port are respectively arranged on the shell at the corresponding side, a fire passage is fixedly arranged in the middle of the drum body, one end of the fire passage is sealingly connected to rotate with a heat supply device located at the side of the discharging port of the drum body, the other end of the fire passage is sealingly connected to rotate with a waste gas collection and treatment pipeline, in addition, a power device and a supporting device are further arranged outside the drum body, the drum body is arranged to be inclined, and the feeding port side of the drum body is higher than the discharging port side.
[0006] Further, the fire passage is fixedly connected with the drum body through a connecting rod, one end of the connecting rod is fixedly connected with the outside of the fire passage, the other end of the connecting rod is fixedly connected with the inner side of the drum body, the fire passage and the drum body are concentrically arranged, a plurality of fin plates are fixedly arranged outside the fire passage.
[0007] Further, the power device includes a motor arranged on one side of the drum body, the motor is drivingly connected with a speed reducer, a driving shaft of the speed reducer is connected with a transmission gear, a gear ring is fixedly connected on the outside of the drum body and meshes with the transmission gear; the supporting device includes a rolling ring fixedly arranged on the outside of the drum body, a roller is fixedly arranged at the position corresponding to the rolling ring at the lower part of the drum body, the roller is used for supporting the rolling ring to rotate, and further improves the stability of the rotation of the drum body, prevents the sliding and displacement of the inclined drum body, and a limiting wheel is arranged on both sides of the rolling ring.
[0008] Further, a plurality of scoops are arranged on the inner side of the drum body, the scoops are uniformly distributed on the inner side of the drum body and are fixedly connected with the drum body, and in addition, a guide plate is arranged at the feeding end of the drum body, and the guide plate is also fixedly arranged on the inner side of the feeding end of the drum body.
[0009] Further, the fin plates are spirally distributed on the outside of the fire passage.
[0010] Further, the inclination angle of the drum body relative to the horizontal plane is 0-30 degrees
[0011] The dust-reducing drum dryer has the following advantages: the fire passage is fixedly arranged in the drum body, so that the heat generated by the heating device is transmitted to the material to be dried through the fire passage, the material is dried by the contact between the material and the fire passage during the rotation of the drum body, the hot air passes through the drum body through the fire passage and does not directly contact the material in the drum body, so that the powder in the material is not blown out to the outside of the dryer to pollute the environment, and impurities in the hot air are not brought into the material, so that the material is prevented from being polluted, the generation of dust is reduced, the environment is protected, the material is prevented from being polluted, and the drying quality of the material is improved. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a structural schematic view of the dust-reducing drum dryer of the utility model;
[0013] Figure 2 It is a structural schematic view of the power device and the supporting device of the utility model;
[0014] Figure 3 It is a sectional view of the dust-reducing drum dryer of the utility model;
[0015] Figure 4 It is a structural schematic view of the fire passage of the utility model;
[0016] The figure mark description: 1, the drum body; 11, the feed inlet; 12, the discharge outlet; 13, the copy board; 14, the guide plate; 2, the overfire channel; 21, the connecting rod; 22, the fin plate; 3, the heating device; 4, the power device; 41, the motor; 42, the speed reducer; 43, the transmission gear; 44, the gear ring; 5, the supporting device; 51, the roller; 52, the rolling ring; 53, the limit wheel. DETAILED DESCRIPTION
[0017] In order to better understand the purpose, structure and function of the utility model, the utility model a kind of dust reduction's roller dryer is further described in detail below in conjunction with drawings.
[0018] As Figures 1-4 The utility model dust reduction's roller dryer, including drum main part, the both sides of drum main part are respectively feed end and discharge end, in feed end and discharge end are rotatably and sealingly connected with shell, respectively set up feed inlet 11 and discharge outlet 12 on the shell of corresponding side, in addition, overfire channel 2 is fixedly arranged in the middle of drum body 1, one end of overfire channel 2 is rotatably and sealingly connected with heating device 3 located at the side of discharge outlet 12 of drum body 1, the other end of overfire channel 2 is rotatably and sealingly connected with waste gas collection and treatment pipeline, in addition, power device 4 and supporting device 5 are also arranged on the outside of drum body 1, the power device 4 is used to drive drum body 1 to rotate, the supporting device 5 supports drum body 1, the drum body 1 of the application is inclinedly arranged, the side of feed inlet 11 of drum body 1 is higher than the side of discharge outlet 12, which facilitates the movement of materials, overfire channel 2 inside drum body 1 is also parallelly and inclinedly arranged with drum body 1, the inclined arrangement of overfire channel 2 is conducive to the movement of hot air from the side of heating device 3 to the other side.
[0019] In use, materials enter the inside of drum body 1 through feed inlet 11, while power device 4 drives drum body 1 to rotate, driving drum body 1 and overfire channel 2 inside it to rotate synchronously, heating device 3 provides flame and heat to overfire channel 2, hot air flows to waste gas treatment device through overfire channel 2, materials rotate and scatter inside the drum, contact materials through overfire channel 2, achieving the effect of heating and drying materials, thus the heat exchange of waste gas after combustion in overfire channel 2 heats overfire channel 2, further realizing the drying of materials, waste gas flows directly to waste gas treatment device through overfire channel 2, of course, waste gas can be further heat-recovered to flow to waste gas treatment device, so as to be discharged, without polluting the environment, hot air does not directly contact materials, without blowing materials out to cause environmental pollution, nor bringing impurities in hot air into materials.
[0020] Specifically, the driving device of the application comprises a motor 41 arranged on one side of the drum body 1, the motor 41 is drivingly connected with a speed reducer 42, the driving shaft of the speed reducer 42 is connected with a transmission gear 43, in addition, a gear ring 44 is fixedly connected on the outside of the drum body 1, the gear ring 44 is fixedly connected on the outside of the drum body 1 and engaged with the transmission gear 43, under the action of the motor 41, the speed reducer 42 and the transmission gear 43, the gear ring 44 can drive the drum body 1 to rotate, in addition, in order to keep the stability of the transmission of the drum body 1, supporting devices 5 are arranged on both sides of the drum body 1, the supporting devices 5 comprise a rolling ring 52 fixedly arranged on the outside of the drum body 1, a roller 51 is fixedly arranged on the lower part of the drum body 1 corresponding to the position of the rolling ring 52, the roller 51 is used for supporting the rolling ring 52 to rotate, in addition, further improve the stability of the rotation of the drum body 1, prevent the sliding and displacement of the inclined drum body 1, limiting wheels 53 are arranged on both sides of the rolling ring 52, the limiting wheels 53 are in contact with the side surface of the rolling ring 52 and provide support, so as to realize the stable rotation of the rolling ring 52 and the drum body 1, and prevent sliding, improve the safety and service life.
[0021] The inside of the drum body 1 is provided with a plurality of scoops 13, the scoops 13 are uniformly distributed on the inside of the drum body 1 and fixedly connected with the drum body 1, the scoops 13 can stir and scatter the materials in the inside of the drum body 1, and realize the upward movement of the materials with the rotation of the drum body 1, which is more conducive to the drying of the materials, in addition, a guide plate 14 is arranged at the feeding end of the drum body 1, the guide plate 14 is also fixedly arranged on the inside of the feeding end of the drum body 1, which is more convenient for the materials entering from the feeding end to enter the inside of the drum body 1, in addition, the drum body 1 is arranged to be inclined relative to the horizontal plane, the inclination angle is 0-30 degrees, the inclination angle in the application is 15 degrees.
[0022] As Figures 3-4As shown, the overfire channel 2 is fixedly connected with the drum body 1 through a connecting rod 21. Specifically, one end of the connecting rod 21 is fixedly connected with the outside of the overfire channel 2, and the other end of the connecting rod 21 is fixedly connected with the inner side of the drum body 1. The overfire channel 2 is concentrically arranged with the drum body 1, and the overfire channel 2 and the drum body 1 can rotate synchronously. When the material contacts the overfire channel 2, the overfire channel 2 has hot air and a high temperature, so that the material can be heated and dried when contacting the overfire channel 2. The inner diameter of the fire inlet connected with the overfire channel 2 and the heat supply device 3 is smaller than the inner diameter of the overfire channel 2. In addition, a plurality of fin plates 22 are fixedly arranged outside the overfire channel 2. The fin plates 22 are uniformly distributed outside the overfire channel 2. The fin plates 22 can increase the stirring and dispersing effect of the material, which is more conducive to the drying of the material. On the other hand, the fin plates 22 increase the heat conduction area of the overfire channel 2, so that the overfire channel 2 can better transfer heat to the material. In addition, the fin plates 22 are arranged in a spiral shape outside the overfire channel 2. The spiral arrangement can further push the material forward. The number of fin plates 22 can be determined according to actual production conditions, which is not limited here.
[0023] The heat supply device 3 in the present application can be realized by electric heating, or by burning biomass fuel or coal gas, natural gas, etc. These are all conventional technologies, which are not described in detail here.
[0024] The drum dryer for reducing dust and ash in the present application has the overfire channel 2 fixedly arranged in the drum body 1, so that the heat generated by the heat supply device 3 is transferred to the material to be dried through the overfire channel 2. The material is dried by contacting the overfire channel 2 through the rotation of the drum body 1. The hot air passes through the drum body 1 through the overfire channel 2, and does not directly contact the material in the drum body 1, so that the powder in the material is not blown out to the outside of the dryer to pollute the environment, and impurities in the hot air are not brought into the material to pollute the material. After the hot air passes through the overfire channel 2, it is directly discharged to the atmosphere after treatment, further reducing the pollution to the environment. In addition, the inclination of the drum body 1 and the overfire channel 2 is conducive to the movement of the material from the feeding end to the discharging end, and utilizes the principle of hot air rising to move the heat from one end of the heat supply device 3 to the other end, without the need for a blower or induced draft fan. The dryer of the present application reduces the generation of dust, protects the environment, avoids the pollution of the material, and improves the drying quality of the material.
[0025] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.
Claims
1. A dust-lowering drum dryer, characterized in that The utility model relates to a kind of rotary kiln, including drum body, the two sides of drum body are respectively feed end and discharge end, and the shell is rotatably sealedly connected in feed end and discharge end, respectively, feed inlet (11) and discharge outlet (12) are respectively arranged on the shell on the corresponding side, overfire channel (2) is fixedly arranged in the middle of drum body (1), one end of the overfire channel (2) is rotatably sealedly connected with heat supply device (3) located on the side of the discharge outlet (12) of the drum body (1), the other end of the overfire channel (2) is rotatably sealedly connected with waste gas collection and treatment pipeline, in addition, power device (4) and support device (5) are further arranged on the outside of the drum body (1), the drum body (1) is arranged obliquely, and the side of the feed inlet (11) of the drum body (1) is higher than the side of the discharge outlet (12).
2. The dust-lowering drum dryer according to claim 1, characterized in that The overfire channel (2) is fixedly connected with the drum body (1) by connecting rod (21), specifically, one end of the connecting rod (21) is fixedly connected with the outside of the overfire channel (2), the other end of the connecting rod (21) is fixedly connected with the inner side of the drum body (1), and the overfire channel (2) is concentrically arranged with the drum body (1), a plurality of fin plates (22) are further fixedly arranged on the outside of the overfire channel (2), and the fin plates (22) are evenly distributed on the outside of the overfire channel (2).
3. The dust-lowering drum dryer according to claim 2, characterized in that The power device (4) includes motor (41) arranged on one side of the drum body (1), the motor (41) is drivingly connected with speed reducer (42), the driving shaft of the speed reducer (42) is connected with transmission gear (43), and gear ring (44) is fixedly connected on the outside of the drum body (1) and engaged with the transmission gear (43).
4. The dust-lowering drum dryer according to claim 3, characterized in that The support device (5) includes rolling ring (52) fixedly arranged on the outside of the drum body (1), and rolling wheel (51) is fixedly arranged on the position corresponding to the rolling ring (52) at the lower part of the drum body (1), the rolling wheel (51) is used to support the rolling ring (52) to rotate, and further improve the stability of the drum body (1) to rotate, prevent the drum body (1) arranged obliquely from sliding and displacing, and limiting wheel (53) is arranged on the two sides of the rolling ring (52).
5. The dust-laying and dust-reducing drum dryer according to claim 4, characterized in that A plurality of scoops (13) are arranged on the inner side of the drum body (1), the scoops (13) are evenly distributed on the inner side of the drum body (1) and fixedly connected with the drum body (1), and in addition, guide vane (14) is further arranged on the feed end of the drum body (1), and the guide vane (14) is also fixedly arranged on the inner side of the feed end of the drum body (1).
6. The dust-lowering drum dryer according to claim 2, wherein The fin plates (22) are distributed in spiral shape on the outside of the overfire channel (2).
7. The dust-laying and dust-reducing drum dryer according to claim 5, characterized in that The inclination angle of the drum body (1) relative to horizontal plane is 0-30 degrees.