Energy-saving ventilation device for cement rotary kiln

Abstract

The utility model relates to cement rotary kiln technical field especially is a kind of cement rotary kiln energy-saving ventilation device, including rotary kiln main body, air inlet subassembly and air outlet subassembly, the outside of rotary kiln main body is equipped with air inlet subassembly, in the utility model, by the shunt shell, air outlet, air duct, exhaust pipe, waste collection box and filter plate being set, the device can be evenly dispersed by shunt shell and air outlet to the kiln box inside heat air conveying from the two sides of heating device respectively, make heating device can make full use of oxygen in hot air, simultaneously by air duct, waste collection box, exhaust pipe constitutes bending exhaust passage, by filter plate, the impurities generated in calcination are intercepted in waste collection box, by the waste collection box of detachable, the device can be more conveniently cleaned to impurity make full use of oxygen in air, have higher air exchange efficiency and oxygen utilization, so that the device has higher fuel utilization and better calcination effect.

Description

Technical Field

[0001] This utility model relates to the field of cement rotary kiln technology, specifically to an energy-saving ventilation device for cement rotary kilns. Background Technology

[0002] Cement rotary kilns are an indispensable key piece of equipment in the cement production process. They are widely used in dry and wet process production lines to convert raw materials such as limestone, clay, and iron ore into cement clinker through high-temperature calcination. As a core piece of equipment in cement production, the optimization of the ventilation system of cement rotary kilns is of great significance for improving production efficiency, reducing energy consumption, and reducing environmental pollution.

[0003] Existing energy-saving ventilation devices for cement rotary kilns mostly use a combination of hot air blowers and ventilation nets for ventilation. Their structure is relatively simple. The hot air blower directly delivers air into the kiln, and the oxygen in the air is not fully utilized in the kiln before being discharged. Although the air exchange efficiency is high, the oxygen utilization rate is low, resulting in unsatisfactory calcination effect. Therefore, an energy-saving ventilation device for cement rotary kilns is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an energy-saving ventilation device for cement rotary kilns, in order to solve the problem that most existing energy-saving ventilation devices for cement rotary kilns use a combination of hot air blowers and ventilation nets for ventilation. Their structure is relatively simple. The hot air blower directly delivers air into the kiln, and the oxygen in the air is not fully utilized in the kiln before being discharged. Although the air exchange efficiency is high, the oxygen utilization rate is low, resulting in an unsatisfactory calcination effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An energy-saving ventilation device for a cement rotary kiln includes a rotary kiln body, an air inlet assembly, and an air outlet assembly. The air inlet assembly is located on the outer side of the rotary kiln body. The air inlet assembly includes a hot air blower fixedly connected to the upper side of the kiln box. Two air outlets of the hot air blower are fixedly connected to air supply pipes. Positioning seats are fixedly connected to the left and right sides of the kiln box. A flow divider shell is fixedly connected to the upper side of each positioning seat. The front side of each flow divider shell is fixedly connected to the end of the air supply pipe furthest from the hot air blower. A set of... The rotary kiln body has evenly distributed exhaust nozzles. An air outlet assembly is provided on the outer side of the rotary kiln body. The air outlet assembly includes an air guide pipe fixedly connected to the upper rear of the rotary kiln body. An exhaust pipe is provided behind the air guide pipe. Multiple connecting plates are fixedly connected between the exhaust pipe and the air guide pipe. A sealing plate is fixedly connected to the air guide pipe and the exhaust pipe directly below the connecting plates. A waste collection box is detachably connected below the sealing plate. A sealing and limiting shell is fixedly connected to the outer side of the waste collection box. A filter plate is fixedly connected to the inner side of the waste collection box.

[0007] Preferably, the rotary kiln body includes a kiln box, a pair of kiln doors are hinged to the front side of the kiln box, a rotary kiln body is provided on the inner side of the kiln box, a first limiting plate and a second limiting plate are fixedly connected to the inner side of the kiln box, and a heating device located behind the second limiting plate is fixedly connected to the inner bottom surface of the kiln box.

[0008] Preferably, the front sides of the two kiln doors are provided with matching door locks, the front end of the rotary kiln body passes through the first limiting plate and is rotatably connected to the first limiting plate, and the rear end of the rotary kiln body passes through the second limiting plate and is rotatably connected to the second limiting plate.

[0009] Preferably, all the air supply pipes are bent circular pipes, the lower side of the positioning seat is aligned with the lower side of the kiln box, the flow divider shells are located on the left and right sides of the heating device, and the exhaust nozzles pass through the through holes on the left and right sides of the kiln box.

[0010] Preferably, the air guide pipe has a rectangular opening corresponding to the rectangular groove on the upper side of the kiln box, the lower sides of the air guide pipe, the exhaust pipe, and the sealing plate are aligned, and the upper side of the waste collection box and the lower side of the sealing plate are at the same height.

[0011] Preferably, the sealing plate is fixedly connected to latches on both the left and right sides, and the waste collection box is fixedly connected to lock bodies corresponding to the latches on both the left and right sides.

[0012] Preferably, the sealing and limiting shell is a "U"-shaped shell, and the upper half of the sealing and limiting shell is simultaneously attached to the outer side of the air guide pipe, the air exhaust pipe, and the sealing plate. The filter plates are inclined and the upper side of the filter plates is attached to the lower side of the sealing plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, the device, through the configuration of a diversion shell, exhaust nozzles, air guide pipes, exhaust pipes, waste collection box, and filter plate, can evenly distribute hot air from both sides of the heating device into the kiln box via the diversion shell and exhaust nozzles. This allows the heating device to fully utilize the oxygen in the hot air. Simultaneously, the air guide pipes, waste collection box, and exhaust pipes form a bendable exhaust channel. The filter plate traps impurities generated during calcination in the waste collection box, and the detachable waste collection box allows for convenient cleaning of these impurities. This device can fully utilize the oxygen in the air, exhibiting high air exchange efficiency and oxygen utilization rate, resulting in high fuel utilization and a good calcination effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the main structure of the rotary kiln of this utility model;

[0018] Figure 4 This is a cross-sectional view of the air intake component structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the air outlet component structure of this utility model;

[0020] Figure 6 This is a cross-sectional view of the air outlet component of this utility model.

[0021] In the diagram: 1. Rotary kiln body; 11. Kiln box; 12. Kiln door; 13. Rotary kiln body; 14. First limiting plate; 15. Second limiting plate; 16. Heating device; 2. Air inlet assembly; 21. Hot air blower; 22. Air duct; 23. Positioning seat; 24. Diverter shell; 25. Exhaust nozzle; 3. Air outlet assembly; 31. Air guide pipe; 32. Exhaust pipe; 33. Connecting plate; 34. Sealing plate; 35. Waste collection box; 36. Sealing limiting shell; 37. Filter plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0025] Please see Figure 1-6 This utility model provides a technical solution:

[0026] An energy-saving ventilation device for a cement rotary kiln includes a rotary kiln body 1, an air inlet assembly 2, and an air outlet assembly 3. The air inlet assembly 2 is located on the outer side of the rotary kiln body 1. The air inlet assembly 2 includes a hot air blower 21 fixedly connected to the upper side of the kiln box 11. Two air outlets of the hot air blower 21 are fixedly connected to air supply pipes 22. Positioning seats 23 are fixedly connected to both the left and right sides of the kiln box 11. A diversion shell 24 is fixedly connected to the upper side of each positioning seat 23. The front side of each diversion shell 24 is fixedly connected to the end of the air supply pipe 22 away from the hot air blower 21. A set of evenly distributed... The exhaust nozzle 25 of the cloth, the air outlet assembly 3 is provided on the outside of the rotary kiln body 1, the air outlet assembly 3 includes an air guide pipe 31 fixedly connected to the upper rear of the rotary kiln body 1, an exhaust pipe 32 is provided behind the air guide pipe 31, a plurality of connecting plates 33 are fixedly connected between the exhaust pipe 32 and the air guide pipe 31, a sealing plate 34 is provided directly below the connecting plate 33 and fixedly connected to the air guide pipe 31 and the exhaust pipe 32, a waste collection box 35 is detachably connected below the sealing plate 34, a sealing limiting shell 36 is fixedly connected to the outside of the waste collection box 35, and a filter plate 37 is fixedly connected to the inside of the waste collection box 35.

[0027] The rotary kiln body 1 includes a kiln box 11, with a pair of kiln doors 12 hinged to the front side of the kiln box 11. A rotary kiln body 13 is provided inside the kiln box 11. A first limiting plate 14 and a second limiting plate 15 are fixedly connected to the inner side of the kiln box 11. A heating device 16 located behind the second limiting plate 15 is fixedly connected to the bottom inner side of the kiln box 11, through which heat can be supplied to the rotary kiln body 13. Matching door locks are provided on the front side of the two kiln doors 12. The front end of the rotary kiln body 13 passes through the first limiting plate 14. Plate 14 is rotatably connected to the first limiting plate 14, and the rear end of the rotary kiln body 13 passes through the second limiting plate 15 and is rotatably connected to the second limiting plate 15. The rotary kiln body 13 allows the material to fully contact the hot air. The air pipes 22 are all bent round pipes, and the lower side of the positioning seat 23 is aligned with the lower side of the kiln box 11. The diversion shells 24 are located on the left and right sides of the heating device 16, and the exhaust nozzles 25 pass through the through holes on the left and right sides of the kiln box 11. The air can be diverted through the diversion shells 24, allowing the external air to flow freely. Hot air is discharged from the exhaust nozzle 25; the air duct 31 has a rectangular opening corresponding to the rectangular groove on the upper side of the kiln box 11; the lower sides of the air duct 31, exhaust duct 32, and sealing plate 34 are aligned; the upper side of the waste collection box 35 and the lower side of the sealing plate 34 are at the same height; the air duct 31, waste collection box 35, and exhaust duct 32 are connected in sequence to form a bent exhaust channel; both sides of the sealing plate 34 are fixedly connected with latches; both sides of the waste collection box 35 are fixedly connected with locks. The waste collection box 35 can be quickly disassembled by engaging the corresponding lock body; the sealing and limiting shell 36 is a "U" shaped shell, and the upper part of the sealing and limiting shell 36 is in contact with the outer side of the air guide pipe 31, the exhaust pipe 32, and the sealing plate 34. The filter plate 37 is distributed at an angle, and the upper side of the filter plate 37 is in contact with the lower side of the sealing plate 34. Hot air can only pass through the filter plate 37 and then be discharged through the exhaust pipe 32 fixed by the connecting plate 33, while the impurities generated by calcination are trapped in the waste collection box 35 by the filter plate 37.

[0028] Workflow: Before use, install the kiln box 11 in a suitable position and connect the power supply. This device is equipped with an external controller, which is electrically connected to the rotary kiln body 13, the heating device 16, and the hot air blower 21. Manual operation of the external controller allows for adjustment of the operating status of the rotary kiln body 13, the heating device 16, and the hot air blower 21. All of the above are existing technologies. When using this device, the operator first opens the kiln door 12, adds the material to be processed into the rotary kiln body 13, then closes the kiln door 12. The external controller then starts the rotary kiln body 13 and the heating device 16. The heating device 16 ignites the fuel inside, allowing the kiln to burn. Heat is supplied to the rotary kiln body 13. The rotary kiln body 13, limited by the first limiting plate 14 and the second limiting plate 15, can rotate. The rotary kiln body 13 allows the material to fully contact the hot air, thus calcining it. Simultaneously, the operator starts the hot air blower 21 via an external controller. The hot air blower 21 draws in outside air and heats it to a suitable temperature. Then, the hot air is transported through the air pipe 22 to the diversion shell 24, which is fixed by the positioning seat 23. The diversion shell 24 diverts the hot air, allowing it to exit through the exhaust nozzles 25. The two sets of symmetrically distributed exhaust nozzles 25 exhaust air towards the heating device 16, ensuring the air flows evenly towards the heating device. 16. This allows the heating device 16 to fully utilize the oxygen in the air, ensuring complete combustion of the fuel within it. Subsequently, the hot air inside the kiln box 11 is discharged from the upper opening of the kiln box 11 due to air pressure. Since the front of the heating device 16 and the rear of the rotary kiln body 13 are not sealed, some air inside the rotary kiln body 13 is also discharged. The discharged hot air carries impurities generated during calcination within the rotary kiln body 13 and enters the waste collection box 35 through the air guide pipe 31. Due to the sealing plate 34 and the sealing limiting shell 36, the air guide pipe 31, waste collection box 35, and exhaust pipe 32 are sequentially connected, forming a bent exhaust channel. The hot air can only pass through the filter plate 37 before passing through... The exhaust is discharged through the exhaust pipe 32 fixed by the connecting plate 33, while the impurities produced by calcination are trapped in the waste collection box 35 by the filter plate 37. The impurities produced by calcination accumulate in the waste collection box 35. After a period of time, when the device is shut down, the staff can release the lock of the waste collection box 35 and the sealing plate 34, remove the waste collection box 35, and fix the exhaust pipe 32 through the connecting plate 33 and the sealing plate 34. The waste collection box 35, the sealing limit shell 36, and the filter plate 37 can be removed together. The staff can clean the waste collection box 35 and the filter plate 37, pour out the impurities in the waste collection box 35, and brush and unclog the filter plate 37.This device can evenly distribute hot air into the kiln box 11 from both sides of the heating device 16 through the diversion shell 24 and exhaust nozzles 25, allowing the heating device 16 to fully utilize the oxygen in the hot air. Simultaneously, a curved exhaust channel is formed by the air guide pipe 31, waste collection box 35, and exhaust pipe 32. Impurities generated during calcination are trapped in the waste collection box 35 by the filter plate 37. The removable waste collection box 35 allows for convenient cleaning of these impurities. This device fully utilizes the oxygen in the air, exhibiting high air exchange efficiency and oxygen utilization rate, resulting in high fuel utilization and good calcination effect.

[0029] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving ventilation device for a cement rotary kiln, comprising a rotary kiln body (1), an air inlet assembly (2), and an air outlet assembly (3), characterized in that: An air inlet assembly (2) is provided on the outer side of the rotary kiln body (1). The air inlet assembly (2) includes a hot air blower (21) fixedly connected to the upper side of the kiln box (11). Both air outlets of the hot air blower (21) are fixedly connected to air supply pipes (22). Positioning seats (23) are fixedly connected to the left and right sides of the kiln box (11). A diversion shell (24) is fixedly connected to the upper side of the positioning seat (23). The front side of the diversion shell (24) is fixedly connected to the end of the air supply pipe (22) away from the hot air blower (21). A set of evenly distributed exhaust nozzles (25) are fixedly connected to the opposing sides of the two diversion shells (24). The outer side of the rotary kiln body (1) is provided with The air outlet assembly (3) includes an air guide pipe (31) fixedly connected to the rear upper part of the rotary kiln body (1). An exhaust pipe (32) is provided behind the air guide pipe (31). Multiple connecting plates (33) are fixedly connected between the exhaust pipe (32) and the air guide pipe (31). A sealing plate (34) is fixedly connected to the air guide pipe (31) and the exhaust pipe (32) directly below the connecting plate (33). A waste collection box (35) is detachably connected below the sealing plate (34). A sealing limiting shell (36) is fixedly connected to the outside of the waste collection box (35). A filter plate (37) is fixedly connected to the inside of the waste collection box (35).

2. The energy-saving ventilation device for a cement rotary kiln according to claim 1, characterized in that: The rotary kiln body (1) includes a kiln box (11), a pair of kiln doors (12) are hinged to the front side of the kiln box (11), a rotary kiln body (13) is provided on the inner side of the kiln box (11), a first limiting plate (14) and a second limiting plate (15) are fixedly connected to the inner side of the kiln box (11), and a heating device (16) located behind the second limiting plate (15) is fixedly connected to the inner bottom surface of the kiln box (11).

3. The energy-saving ventilation device for a cement rotary kiln according to claim 2, characterized in that: The front sides of the two kiln doors (12) are provided with matching door locks. The front end of the rotary kiln body (13) passes through the first limiting plate (14) and is rotatably connected to the first limiting plate (14). The rear end of the rotary kiln body (13) passes through the second limiting plate (15) and is rotatably connected to the second limiting plate (15).

4. The energy-saving ventilation device for a cement rotary kiln according to claim 1, characterized in that: The air supply pipes (22) are all bent round pipes, the lower side of the positioning seat (23) is aligned with the lower side of the kiln box (11), the diversion shells (24) are located on the left and right sides of the heating device (16), and the exhaust nozzles (25) pass through the through holes on the left and right sides of the kiln box (11).

5. The energy-saving ventilation device for a cement rotary kiln according to claim 1, characterized in that: The air duct (31) has a rectangular opening corresponding to the rectangular groove on the upper side of the kiln box (11). The lower sides of the air duct (31), the exhaust pipe (32), and the sealing plate (34) are aligned. The upper side of the waste collection box (35) and the lower side of the sealing plate (34) are at the same height.

6. The energy-saving ventilation device for a cement rotary kiln according to claim 1, characterized in that: The sealing plate (34) is fixedly connected to the left and right sides with latches, and the waste collection box (35) is fixedly connected to the left and right sides with lock bodies corresponding to the latches.

7. The energy-saving ventilation device for a cement rotary kiln according to claim 1, characterized in that: The sealing and limiting shell (36) is a "U" shaped shell. The upper part of the sealing and limiting shell (36) is in contact with the outer side of the air guide pipe (31), the exhaust pipe (32), and the sealing plate (34). The filter plate (37) is inclined and the upper side of the filter plate (37) is in contact with the lower side of the sealing plate (34).

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