Flame-proof drying device for coal production
By introducing an elastic connection and vibration structure between the inner and outer drums in the drum drying device, the problems of residue and unevenness in the coal drying process are solved, achieving a more thorough drying effect and uniformity.
Patent Information
- Application Number
- CN202520383819.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Existing drum dryers suffer from coal residue and uneven drying during the coal drying process. In particular, damp coal powder tends to adhere to the inner side wall of the drum, and there is a lack of vibration structure.
A drying device comprising a drum and an inner drum is designed. The inner drum is elastically connected to the outer drum through a support spring and a spring sheet. A spiral plate is provided inside the inner drum. When the support roller is driven by a geared motor, the drum and the inner drum rotate, generating vibration to enhance the drying effect.
Through the vibrating tumbling structure, the coal inside the inner drum dries more thoroughly, reducing residue and achieving a more complete drying effect. This also prevents coal adhesion and improves the uniformity and efficiency of drying.
Smart Images
Figure CN223580480U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a coal production equipment, specifically to a fireproof drying device for coal production. BACKGROUND
[0002] The fireproof drying function in coal production mainly reflects in the following aspects:
[0003] I. Reduce the risk of spontaneous combustion: the moisture in coal may promote the oxidation reaction of coal under certain conditions, increasing the risk of spontaneous combustion. After drying treatment, the contact area of oxygen on the surface of coal is reduced, and the oxidation reaction rate is reduced, thus reducing the potential factors of spontaneous combustion and the risk of spontaneous combustion.
[0004] II. Improve the storage conditions: high-moisture coal is prone to moisture absorption and caking during storage, increasing the risk of spontaneous combustion and mold. Dry coal can better maintain its physical and chemical properties and is easier to store.
[0005] III. Improve economic efficiency: spontaneous combustion and mold can lead to a decrease in coal quality and economic value. Dry coal can prevent these losses and be sold as high-quality fuel or raw materials at a higher price.
[0006] Currently, the drum equipment is a commonly used drying device for coal, that is, coal is conveyed by rolling in the rotating drum, and hot air is introduced through a hot air blower during the conveying process to dry the coal inside. However, the current drum equipment lacks a vibration structure and cannot utilize its own rotation to generate vibration. Therefore, coal, especially coal powder, that is relatively wet in the early stage may dry and stick to the inner wall of the drum during drying, which not only causes coal residue but also hinders the rolling effect, resulting in uneven drying. SUMMARY
[0007] The utility model solves the technical problem of overcoming the above-mentioned defects of the prior art and provides a fireproof drying device for coal production.
[0008] To solve the above technical problems, the anti-combustion drying device for coal production comprises a roller 1 and a base 14, the roller 1 is externally provided with a supporting roller ring 6, each supporting roller ring 6 is provided with a supporting roller 11 on both sides, the supporting rollers 11 are arranged in pairs on the left and right sides, and the supporting rollers 11 support the supporting roller ring 6 above, the both ends of the rotating shaft of each supporting roller 11 are respectively sleeved with bearings, the base 14 is provided with corresponding bearing seats 13, each bearing is respectively fixed on the corresponding bearing seat 13, and at least one supporting roller 11 is driven by a speed reducer 12, characterized in that the supporting roller ring 6 is elastically connected to the outer side wall of the roller 1 through a plurality of elastic sheets 7 on the inner side wall, the elastic sheets 7 on the same supporting roller ring 6 are arranged around the axis of the roller 1, and the inner roller 2 is further arranged in the roller 1, the outer periphery of the inner roller 2 is elastically supported in the roller 1 through a plurality of supporting springs 5, and the inner wall of the inner roller 2 is provided with a plurality of helical plates 8 arranged in a spiral.
[0009] In this way, during use, the coal exerts heavy pressure on the inner roller 2 after entering the inner roller 2, the supporting springs 5 and the elastic sheets 7 below the inner roller 2 are bent under pressure, and with the continuous rotation of the roller 1, the supporting roller ring 6 and the inner roller 2, each supporting spring 5 and elastic sheet 7 passes through the lowest point in turn, so that each supporting spring 5 and elastic sheet 7 is continuously pressed and rebounds in turn, driving the roller 1 and the inner roller 2 to rotate while also vibrating up and down in a small range. The vibration range of the inner roller 2 is larger. The coal rolls and is conveyed in the inner roller 2, and is more fully tumbled through vibration, so that the hot air can better take away the moisture on the surface of the coal, the drying is more thorough, the drying effect is better, and the coal is less likely to adhere to the inner wall of the inner roller 2 or the helical plates 8.
[0010] As an optimization, the feeding end of the roller 1 is covered with an end cover 3, the center of the end cover 3 penetrates a feeding cylinder 4, the discharge end of the feeding cylinder 4 extends into the feeding end of the inner roller 2, and the hot air is introduced from the discharge end of the inner roller 2 or the outer end of the feeding cylinder 4. In this way, the feeding impact is small.
[0011] As an optimization, the discharge end of the roller 1 is fixed with an annular end circular ring plate 9, and the discharge end of the inner roller 2 extends to the outside of the end circular ring plate 9. In this way, the discharge is facilitated.
[0012] As an optimization, the inner side of the edge of the end cover 3 and the inner side of the edge of the end circular ring plate 9 are respectively and uniformly provided with a plurality of triangular reinforcing plates 10, one side of each triangular reinforcing plate 10 is fixedly connected with the outer side wall of the roller 1, and the other side is fixedly connected with the side wall of the corresponding end cover 3 or end circular ring plate 9. In this way, the mechanical strength is high.
[0013] As optimization, two supporting rollers 6 are arranged in front of and behind the roller 1, each supporting roller 6 is provided with a supporting roller 11 and a speed reducer motor 12, and is driven by the speed reducer motor 12.
[0014] The drying and conveying process of the coal production anti-burning drying device is the same as that of the existing roller drying equipment, and the difference lies in that supporting springs and elastic sheets are arranged, that is, the supporting rollers are elastically connected with the outer cylinder outer sidewall through the elastic sheets on the inner sidewall, so that when the supporting rollers and the outer cylinder rotate, the elastic structure formed by the elastic sheets can make the outer cylinder and the inner cylinder inside it produce a certain synchronous vibration effect, especially when the coal lumps roll and tumble in the inner cylinder, the periphery of the inner cylinder is elastically supported in the outer cylinder through the supporting springs, so that the outer cylinder and the inner cylinder form a second vibration structure, thereby effectively improving the vibration effect generated when the inner cylinder rotates, effectively preventing the humid coal residue from being left on the inner sidewall of the inner cylinder due to drying and hardening, and making the hot air better take away the moisture on the surface of the coal, the drying is more thorough, the drying effect is better, and the coal is not easy to adhere and remain in the inner cylinder.
[0015] It is suitable for large coal mines, coal preparation plants and thermal power plants. BRIEF DESCRIPTION OF DRAWINGS
[0016] The coal production anti-burning drying device will be further described below with reference to the drawings:
[0017] Figure 1 It is a front view structural schematic diagram of the coal production anti-burning drying device;
[0018] Figure 2 It is a left side view structural schematic diagram of the coal production anti-burning drying device;
[0019] Figure 3 It is a right side view structural schematic diagram of the coal production anti-burning drying device;
[0020] Figure 4 It is Figure 1 It is a cross-sectional structural schematic diagram (cut along the vertical plane passing through the shaft center line) of the coal production anti-burning drying device shown in the figure;
[0021] Figure 5 It is Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the coal production anti-burning drying device shown in the figure;
[0022] Figure 6 It is a physical diagram of the coal production anti-burning drying device.
[0023] In the diagram: 1 is the drum, 2 is the inner drum, 3 is the end cover, 4 is the feed cylinder, 5 is the support spring, 6 is the support roller, 7 is the spring sheet, 8 is the spiral plate, 9 is the end ring plate, 10 is the triangular reinforcing plate, 11 is the support roller, 12 is the geared motor, 13 is the bearing seat, and 14 is the base. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] Implementation method one: such as Figures 1-6 As shown, this coal production fire-resistant drying device includes a drum 1 and a base 14. A supporting roller ring 6 is provided outside the drum 1. Each supporting roller ring 6 has supporting rollers 11 on both sides. The supporting rollers 11 are arranged in pairs, supporting the supporting roller ring 6 above them. Bearings are fitted at both ends of the rotating shaft of each supporting roller 11. A corresponding bearing seat 13 is provided on the base 14, and each bearing is fixed to its corresponding bearing seat 13. At least one supporting roller 11 is driven by a reduction motor 12. The supporting roller ring 6 is elastically connected to the outer wall of the drum 1 through several spring pieces 7 on its inner sidewall. The spring pieces 7 on the same supporting roller ring 6 are arranged around the center of the axis of the drum 1. An inner drum 2 is also provided inside the drum 1. The outer periphery of the inner drum 2 is elastically supported inside the drum 1 by several supporting springs 5. The inner wall of the inner drum 2 is provided with multiple spirally arranged spiral plates 8. Hot air is introduced into the inner drum 2.
[0027] The feeding end of the roller 1 is covered with an end cover 3, a feeding cylinder 4 is penetrated through the center of the end cover 3, the discharging end of the feeding cylinder 4 extends into the feeding end of the inner roller 2, and the hot air is introduced from the discharging end of the inner roller 2 or the outer end of the feeding cylinder 4. The discharging end of the roller 1 is fixed with an annular end circular ring plate 9, and the discharging end of the inner roller 2 extends out of the end circular ring plate 9.
[0028] The inner side of the edge of the end cover 3 and the inner side of the edge of the circular ring plate 9 are respectively and uniformly provided with a plurality of triangular reinforcing plates 10, one side of each triangular reinforcing plate 10 is fixedly connected with the outer side wall of the roller 1, and the other side is fixedly connected with the side wall of the corresponding end cover 3 or end circular ring plate 9.
[0029] Two supporting rollers 6 are arranged in front of and behind the roller 1, each supporting roller 6 is provided with a supporting roller 11, a reduction motor 12 is arranged on the supporting roller 11, and the supporting roller 11 is driven to rotate by the reduction motor 12. Figures 1-3
[0030] Of course, one of the supporting rollers 11 can be driven to rotate by the reduction motor 12, the shaft of the supporting roller 11 is respectively sleeved with a bearing seat 13 at both ends, the bearing seat 13, the supporting roller 11 and the reduction motor 12 are fixed on a base 14.
[0031] Of course, the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A fire-resistant drying device for coal production, comprising a drum (1) and a base (14), wherein a supporting roller (6) is provided on the outside of the drum (1), and a supporting roller (11) is provided on both sides of each supporting roller (6), the supporting rollers (11) being paired left and right to support the supporting roller (6) above them, bearings being sleeved at both ends of the rotating shaft of each supporting roller (11), and a corresponding bearing seat (13) being provided on the base (14), wherein each bearing is fixed on the corresponding bearing seat (13), and at least one supporting roller (11) is driven by a reduction motor (12), characterized in that: The support roller (6) is elastically connected to the outer wall of the roller (1) through several spring pieces (7) on the inner side wall. The spring pieces (7) on the same support roller (6) are arranged around the axis of the roller (1). The roller (1) is also provided with an inner roller (2). The outer periphery of the inner roller (2) is elastically supported in the roller (1) by several support springs (5). The inner wall of the inner roller (2) is provided with a spirally arranged multi-segment spiral plate (8). Hot air is introduced into the inner roller (2).
2. The coal production fire-resistant drying device according to claim 1, characterized in that: The feed end of the roller (1) is covered with an end cap (3), and a feed cylinder (4) runs through the center of the end cap (3). The discharge end of the feed cylinder (4) extends into the feed end of the inner roller (2). The hot air is introduced from the discharge end of the inner roller (2) or the outer end of the feed cylinder (4).
3. The coal production fire-resistant drying device according to claim 2, characterized in that: The discharge end of the roller (1) is fixed with an annular end ring plate (9), and the discharge end of the inner roller (2) extends to the outside of the end ring plate (9).
4. The coal production fire-resistant drying device according to claim 3, characterized in that: Multiple triangular reinforcing plates (10) are evenly arranged on the inner edge of the end cap (3) and the inner edge of the end ring plate (9). One right-angled side of each triangular reinforcing plate (10) is fixedly connected to the outer wall of the roller (1), and the other right-angled side is fixedly connected to the side wall of the corresponding end cap (3) or end ring plate (9).
5. The coal production fire-resistant drying device according to claim 1, characterized in that: The roller (1) has two supporting roller rings (6) at the front and rear. Each supporting roller ring (6) has a supporting roller (11) and is equipped with a geared motor (12).