Heat energy recovery device for roasting of rotary kiln
By designing a spiral tube and filter structure in the rotary kiln roasting device to recover the heat of smoke and dust, the problem of unused smoke and dust heat is solved, and the reuse of heat energy and cost reduction is achieved.
Patent Information
- Application Number
- CN202421972277.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-15
AI Technical Summary
During the use of existing rotary kilns, the heat in the smoke and dust cannot be effectively recovered, resulting in an increase in thermal energy loss and an increase in usage costs.
A heat energy recovery device for roasting rotary kiln is designed. The heat in the smoke is utilized through the spiral tube and filter structure, and the new air is preheated and then added to the rotary kiln. Combined with the design of anti-slip ring and connecting plate, it is convenient for the installation and cleaning of the device.
It reduces the heat energy loss of the rotary kiln, reduces the cost of use, and realizes the reuse of hot air, improving the practicality and operational convenience of the device.
Smart Images
Figure CN223077439U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of recycling devices, and more specifically, the utility model relates to a heat energy recycling device for rotary kiln roasting. Background Art
[0002] A rotary kiln refers to a rotary calcination kiln (commonly known as a rotary kiln), whose shape is similar to a turntable, also called a turntable kiln, belonging to the building materials equipment category. Rotary kilns can be divided into cement kilns, metallurgical and chemical kilns, and lime kilns according to the materials processed. Cement kilns are mainly used for calcining cement clinker, and are divided into two major categories: dry-process cement kilns and wet-process cement kilns. Metallurgical and chemical kilns are mainly used for magnetization roasting of lean iron ore in steel plants in the metallurgical industry, oxidation roasting of chromium and nickel iron ores, roasting of bauxite in refractory material plants, roasting of clinker and aluminum hydroxide in aluminum plants, and roasting of chromite sand and chromite powder in chemical plants. Lime kilns (i.e., active lime kilns) are used for roasting active lime and light burned dolomite used in steel plants and ferroalloy plants.
[0003] During the use of most existing rotary kilns, the heat generated generally is discharged to the outside together with the smoke and dust, and the heat in the smoke and dust cannot be recycled to preheat the newly added air, which not only increases the loss of heat energy, but also increases the use cost of the rotary kiln. Summary of the Utility Model
[0004] In order to overcome the above-mentioned defects of the prior art, the embodiment of the utility model provides a heat energy recycling device for rotary kiln roasting. By using the arrangement of the mechanism, the device can utilize the heat in the discharged smoke and dust, thereby reducing the heat energy loss of the rotary kiln to solve the problems raised in the above background art.
[0005] To achieve the above object, the utility model provides the following technical solution: A heat energy recycling device for rotary kiln roasting, including a hollow rod, a first through hole is opened at the bottom of the hollow rod, a second through hole is opened at the top of the hollow rod, a first connecting pipe is arranged at the top of the hollow rod, a second connecting pipe is arranged on one side of the hollow rod, a third connecting pipe and a fourth connecting pipe are sequentially arranged from top to bottom on the other side of the hollow rod, and a utilization mechanism is arranged inside the hollow rod.
[0006] In a preferred embodiment, the utilization mechanism includes a spiral pipe, and both ends of the spiral pipe penetrate through the hollow rod and extend into the second connecting pipe and the third connecting pipe respectively.
[0007] In a preferred embodiment, an internal thread ring is arranged at the bottom of the spiral pipe, an external thread ring is arranged inside the internal thread ring, and a filter screen is arranged inside the external thread ring.
[0008] In a preferred embodiment, a collecting hopper is provided at the bottom of the external thread ring. A third through hole is formed on one side of the collecting hopper, and a conveying pipe is in contact with one side of the collecting hopper.
[0009] In a preferred embodiment, one end of the conveying pipe penetrates through the hollow rod and extends into the interior of the fourth connecting pipe, and a connecting block is provided at the bottom of the collecting hopper.
[0010] In a preferred embodiment, an anti-slip ring is provided inside the first through hole. The anti-slip ring is made of rubber material, and a connecting plate is provided inside the anti-slip ring.
[0011] In a preferred embodiment, a baffle is provided at the bottom of the connecting plate. The top of the baffle is in contact with the bottom of the hollow rod and the bottom of the anti-slip ring respectively.
[0012] The technical effects and advantages of the present utility model:
[0013] By providing a utilization mechanism, during the use of the rotary kiln equipped with this device, when the heat generated during the use follows the smoke and dust for emission, the utilization mechanism can preheat the newly added air and then add the new air into the rotary kiln. Through such a setting, not only the heat energy loss of the rotary kiln is reduced, but also the use cost of the rotary kiln is indirectly reduced. And due to the reasonable setting of the utilization mechanism, not only can the utilization mechanism preheat the new air, but also it can filter the smoke and dust. Thus, the filtered hot air is connected to the equipment that needs to utilize hot air outside to reuse the heat, and it is also convenient for the operator to take out the detachable parts in the utilization mechanism from the hollow rod to clean the smoke and dust filter and the filter screen. Through such a reasonable setting, the practicability of this device during use has been significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is the overall structural schematic diagram of the present utility model.
[0015] Figure 2 is the sectional structural schematic diagram of the present utility model.
[0016] Figure 3 is of the present utility model Figure 2 enlarged structural schematic diagram at A.
[0017] Figure 4 is of the present utility model Figure 2 enlarged structural schematic diagram at B.
[0018] The reference numerals are: 1, hollow rod; 2, first connecting pipe; 3, second connecting pipe; 4, third connecting pipe; 5, fourth connecting pipe; 6, spiral pipe; 7, internal thread ring; 8, external thread ring; 9, filter screen; 10, collecting hopper; 11, conveying pipe; 12, connecting block; 13, anti-slip ring; 14, connecting plate; 15, baffle plate. Detailed implementation manners
[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0020] As shown in the attached Figures 1-4 A heat energy recovery device for rotary kiln roasting, including a hollow rod 1, a first through hole is opened at the bottom of the hollow rod 1, a second through hole is opened at the top of the hollow rod 1, a first connecting pipe 2 is arranged at the top of the hollow rod 1, a second connecting pipe 3 is arranged on one side of the hollow rod 1, and a third connecting pipe 4 and a fourth connecting pipe 5 are arranged on the other side of the hollow rod 1 from top to bottom in sequence. A utilization mechanism is arranged inside the hollow rod 1 to facilitate connection with the corresponding pipes of the rotary kiln through the arrangements of the first connecting pipe 2, the second connecting pipe 3, the third connecting pipe 4 and the fourth connecting pipe 5 respectively.
[0021] As shown in the attached Figure 2 、 3 、4, the utilization mechanism includes a spiral pipe 6, both ends of the spiral pipe 6 penetrate through the hollow rod 1 and extend into the second connecting pipe 3 and the third connecting pipe 4 respectively. An internal thread ring 7 is arranged at the bottom of the spiral pipe 6, an external thread ring 8 is arranged inside the internal thread ring 7, a filter screen 9 is arranged inside the external thread ring 8, a collecting hopper 10 is arranged at the bottom of the external thread ring 8, a third through hole is opened on one side of the collecting hopper 10, a conveying pipe 11 is in contact with one side of the collecting hopper 10, one end of the conveying pipe 11 penetrates through the hollow rod 1 and extends into the fourth connecting pipe 5, and a connecting block 12 is arranged at the bottom of the collecting hopper 10 to facilitate the utilization of the heat in the soot by the utilization mechanism.
[0022] As shown in the attached Figure 1 、 2 、3, an anti-slip ring 13 is arranged inside the first through hole. The anti-slip ring 13 is made of rubber material. A connecting plate 14 is arranged inside the anti-slip ring 13. A baffle plate 15 is arranged at the bottom of the connecting plate 14. The top of the baffle plate 15 is in contact with the bottom of the hollow rod 1 and the bottom of the anti-slip ring 13 respectively, so that the connecting plate 14 and the baffle plate 15 can be firmly installed at the bottom of the hollow rod 1 through the setting of the anti-slip ring 13.
[0023] Working principle of the utility model: When using this device, first connect the soot discharge pipe of the rotary kiln to the fourth connecting pipe 5 with a connector, and connect the fresh air inlet pipe to the second connecting pipe 3 with a connector. After the connection is completed, connect the first connecting pipe 2 to the equipment that needs to use heat energy in the outside world with a connector. After the connection is completed, the soot discharged from the rotary kiln enters the utilization mechanism during discharge, is filtered, and pre-heats the fresh air during the discharge process. The finally discharged air containing heat then enters the equipment that needs to use heat energy again for reuse.
[0024] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the internal communication of two components. It can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;
[0025] Second: In the attached drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the utility model can be combined with each other;
[0026] Finally: The above are only the preferred embodiments of the utility model and are not used to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A heat energy recovery device for rotary kiln roasting, comprising a hollow rod (1), characterized in that: A first through hole is formed at the bottom of the hollow rod (1), a second through hole is formed at the top of the hollow rod (1), a first connecting pipe (2) is arranged at the top of the hollow rod (1), a second connecting pipe (3) is arranged on one side of the hollow rod (1), a third connecting pipe (4) and a fourth connecting pipe (5) are sequentially arranged from top to bottom on the other side of the hollow rod (1), and a utilization mechanism is arranged inside the hollow rod (1). The utilization mechanism includes a spiral pipe (6), and both ends of the spiral pipe (6) penetrate through the hollow rod (1) and extend into the second connecting pipe (3) and the third connecting pipe (4) respectively.
2. The thermal energy recovery device for rotary kiln roasting according to claim 1, wherein: An internal thread ring (7) is arranged at the bottom of the spiral pipe (6), an external thread ring (8) is arranged inside the internal thread ring (7), and a filter screen (9) is arranged inside the external thread ring (8).
3. A heat energy recovery device for rotary kiln calcination according to claim 2, characterized in that: A collecting hopper (10) is arranged at the bottom of the external thread ring (8), a third through hole is formed on one side of the collecting hopper (10), and a conveying pipe (11) is in contact with one side of the collecting hopper (10).
4. A heat energy recovery device for rotary kiln roasting according to claim 3, characterized in that: One end of the conveying pipe (11) penetrates through the hollow rod (1) and extends into the fourth connecting pipe (5), and a connecting block (12) is arranged at the bottom of the collecting hopper (10).
5. A heat energy recovery device for rotary kiln roasting according to claim 1, characterized in that: An anti-slip ring (13) is arranged inside the first through hole, the anti-slip ring (13) is made of rubber material, and a connecting plate (14) is arranged inside the anti-slip ring (13).
6. The heat energy recovery device for rotary kiln roasting according to claim 5, characterized in that: A baffle (15) is arranged at the bottom of the connecting plate (14), and the top of the baffle (15) is in contact with the bottom of the hollow rod (1) and the bottom of the anti-slip ring (13) respectively.