Preheater for preheating raw materials
By setting up a crushing and rolling mechanism in the spreading box of the cement preheater, the cement raw materials are dispersed into the hot air duct for preheating, which solves the problem of unsatisfactory preheating effect in the prior art and significantly improves the preheating effect.
Patent Information
- Application Number
- CN202421388316.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The existing cement production preheater lacks crushing and rolling mechanisms inside the spreading box, resulting in the clumping material entering the hot air duct directly, and the preheating effect is not ideal.
A preheater for preheating of raw materials is designed, including installing a crushing motor, crushing shaft and crushing knife in the spreading box, as well as a rolling roller and rolling motor. Through crushing and rolling, the raw materials are scattered into the hot air duct for preheating.
Through crushing and rolling treatment, the raw materials can be preheated more effectively, improving the preheating effect, and solving the problem of unsatisfactory preheating caused by the mass entering the hot air duct.
Smart Images
Figure CN222912384U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cement processing, in particular to a preheater for raw material preheating. Background Technique
[0002] A cement preheater is a device used in the cement production process, mainly used to preheat raw materials, increase their temperature, and thus provide favorable conditions for subsequent grinding and calcination processes. Cement preheaters usually adopt the principle of heat exchange, using the waste heat of high-temperature exhaust gas to preheat raw materials, improving the thermal efficiency and reducing energy consumption.
[0003] When the existing preheater for cement production is in use, there is no crushing and rolling mechanism inside its feeding box, which easily allows agglomerated materials to directly enter the hot air pipe, resulting in an unsatisfactory preheating effect of the materials. Content of the Utility Model
[0004] The purpose of the utility model is to provide a preheater for raw material preheating, which has the advantages of crushing and rolling cement raw materials to make them enter the hot air pipe in a scattered state for preheating, improving the preheating effect, and solving the problems mentioned in the background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A preheater for raw material preheating, including a preheater feeding box body, a conical seat is installed at the upper end inside the preheater feeding box body, a U-shaped frame is installed in the middle of the top of the preheater feeding box body, a crushing motor is installed in the middle of the top of the cross beam of the U-shaped frame, the output shaft flange of the crushing motor is connected to a crushing shaft, the crushing shaft penetrates through the preheater feeding box body and extends into the conical seat, four groups of crushing knives are installed around the crushing shaft in a circumferential array, two rolling rollers are rotatably installed inside the preheater feeding box body directly below the conical seat, the output shafts of the two rolling rollers penetrate through the rear box plate of the preheater feeding box body and are installed with spur gears, the two spur gears are meshed and connected, a sloping plate is installed inside the preheater feeding box body below the two rolling rollers, and a discharge port is provided at the discharge end of the sloping plate on the left side plate of the preheater feeding box body.
[0006] Preferably, two feed hoppers are symmetrically installed at both ends of the top of the preheater feeding box body. By setting two feed hoppers, it is convenient to feed materials into the preheater feeding box body.
[0007] Preferably, a preheater hot air pipe is fixed on the left side of the preheater feeding box body through a fixing sleeve, and a drainage groove is installed at the feeding port of the preheater hot air pipe and the discharge port of the preheater feeding box body. By setting the drainage groove, the crushed and rolled raw materials can be drained into the preheater hot air pipe.
[0008] Preferably, two drainage plates are symmetrically installed on both sides of the discharge port at the bottom of the conical seat. By setting two drainage plates, the crushed raw materials can be drained between the two rolling rollers.
[0009] Preferably, a mounting plate is installed on the back of the material spreading box body of the preheater, and a rolling motor is installed on the mounting plate. The output shaft of the rolling motor is connected to the rotating shaft of the right rolling roller through a flange. By setting the rolling motor, the two rolling rollers are driven to rotate to roll the crushed raw materials.
[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0011] When the present utility model is in use, materials are added into the material spreading box body of the preheater from two feed hoppers. The crushing motor works to drive the crushing shaft to rotate. The rotation of the crushing shaft drives four groups of crushing knives to rotate in the conical seat to crush the materials. The crushed materials are drained by two diversion plates and fall between the two rolling rollers. The rolling motor drives the two rolling rollers to rotate to extrude the crushed materials. The rolled materials slide down from the inclined plate and are drained through the drainage groove into the hot air pipe of the preheater for preheating, thereby realizing the crushing and rolling of cement raw materials to make them enter the hot air pipe in a scattered state for preheating, improving the preheating effect. Description of the Drawings
[0012] Figure 1 is a schematic structural diagram of the present utility model;
[0013] Figure 2 is a side view of the present utility model.
[0014] In the figure: 1. Material spreading box body of the preheater; 2. Inclined plate; 3. Rolling roller; 4. Diversion plate; 5. Conical seat; 6. Drainage groove; 7. Hot air pipe of the preheater; 8. Fixed sleeve; 9. Feed hopper; 10. U-shaped frame; 11. Crushing motor; 12. Crushing shaft; 13. Crushing knife; 14. Mounting plate; 15. Straight gear; 16. Rolling motor. Specific Embodiments
[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0016] Please refer to Figures 1 to 2, the present utility model provides a technical solution for a preheater for raw material preheating: A preheater for raw material preheating includes a preheater material spreading box body 1. At the upper end inside the preheater material spreading box body 1, a conical seat 5 is installed. On both sides of the discharge port at the bottom of the conical seat 5, two diversion plates 4 are symmetrically installed. In the middle of the top of the preheater material spreading box body 1, a U-shaped frame 10 is installed. At both ends of the top of the preheater material spreading box body 1, two feed hoppers 9 are symmetrically installed. In the middle of the top of the cross beam of the U-shaped frame 10, a crushing motor 11 is installed. The output shaft of the crushing motor 11 is flange-connected to a crushing shaft 12. The crushing shaft 12 passes through the preheater material spreading box body 1 and extends into the conical seat 5. Around the crushing shaft 12, four groups of crushing knives 13 are installed in a circular array. Materials are added into the preheater material spreading box body 1 from the two feed hoppers 9. The crushing motor 11 operates to drive the crushing shaft 12 to rotate. The rotation of the crushing shaft 12 drives the four groups of crushing knives 13 to rotate inside the conical seat 5 to crush the materials.
[0017] Inside the preheater material spreading box body 1, two rolling rollers 3 are rotatably installed directly below the conical seat 5. The output shafts of the two rolling rollers 3 pass through the rear box plate of the preheater material spreading box body 1 and are installed with spur gears 15. The two spur gears 15 are meshed and connected. On the back of the preheater material spreading box body 1, a mounting plate 14 is installed. On the mounting plate 14, a rolling motor 16 is installed. The output shaft of the rolling motor 16 is flange-connected to the rotating shaft of the right rolling roller 3. Inside the preheater material spreading box body 1, below the two rolling rollers 3, an inclined plate 2 is installed. At the discharge end of the inclined plate 2 on the left side plate of the preheater material spreading box body 1, there is a discharge port. On the left side of the preheater material spreading box body 1, a preheater hot air pipe 7 is fixed through a fixing sleeve 8. At the feed port of the preheater hot air pipe 7 and the discharge port of the preheater material spreading box body 1, a diversion groove 6 is installed. The crushed materials are diverted by the two diversion plates 4 and fall between the two rolling rollers 3. The rolling motor 16 operates to drive the right rolling roller 3 and the spur gear 15 installed thereon to rotate. The rotation of the spur gear 15 drives the other spur gear 15 meshed with it to rotate, thereby driving the two rolling rollers 3 to rotate to extrude the crushed materials. The rolled materials slide down from the inclined plate 2 and are diverted through the diversion groove 6 into the preheater hot air pipe 7 for preheating.
[0018] All motors of the present utility model are designed by selecting a small servo motor - model 14HS2408. This model of motor is only for reference by those skilled in the art. Those skilled in the art can select motors with the same parameters and functions for installation and debugging according to actual production needs. The present utility model will not elaborate.
[0019] When the utility model is in use, materials are added into the preheater spreading box body 1 from two feeding hoppers 9. The crushing motor 11 operates to drive the crushing shaft 12 to rotate. The rotation of the crushing shaft 12 drives four groups of crushing knives 13 to rotate in the conical seat 5 to crush the materials. The crushed materials are drained by two diversion plates 4 and fall between two rolling rollers 3. The rolling motor 16 operates to drive the right rolling roller 3 and the spur gear 15 mounted thereon to rotate. The rotation of the spur gear 15 drives another spur gear 15 meshed with it to rotate, thereby driving the two rolling rollers 3 to rotate to extrude the crushed materials. The rolled materials slide down from the inclined plate 2 and are drained through the diversion groove 6 into the preheater hot air duct 7 for preheating.
[0020] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A preheater for preheating raw materials, comprising a preheater material spreading box (1), characterized in that: A conical seat (5) is installed at the upper end of the preheater material spreading box (1), a U-shaped frame (10) is installed in the middle of the top of the preheater material spreading box (1), a crushing motor (11) is installed in the middle of the top of the crossbeam of the U-shaped frame (10), the output shaft flange of the crushing motor (11) is connected to a crushing shaft (12), the crushing shaft (12) penetrates the preheater material spreading box (1) and extends into the conical seat (5), and four groups of crushing knives (12) are installed in a circular array around the crushing shaft (12). 3), two rolling rollers (3) are rotatably mounted inside the preheater material spreading box (1) and located directly below the conical seat (5), the output shafts of the two rolling rollers (3) pass through the rear box plate of the preheater material spreading box (1) and are mounted with spur gears (15), the two spur gears (15) are meshingly connected, an inclined plate (2) is mounted inside the preheater material spreading box (1) and located below the two rolling rollers (3), and a discharge port is provided on the left side plate of the preheater material spreading box (1) at the discharge end of the inclined plate (2).
2. A preheater for preheating raw materials according to claim 1, characterized in that: Two feeding hoppers (9) are symmetrically mounted at both ends of the top of the preheater material spreading box (1).
3. A preheater for preheating raw materials according to claim 1, characterized in that: A preheater hot air pipe (7) is fixed to the left side of the preheater material spreading box (1) via a fixing sleeve (8), and a drainage groove (6) is installed at the feed inlet of the preheater hot air pipe (7) and the discharge outlet of the preheater material spreading box (1).
4. A preheater for preheating raw materials according to claim 1, characterized in that: Two guide plates (4) are symmetrically mounted on both sides of the discharge port at the bottom of the conical seat (5).
5. A preheater for preheating raw materials according to claim 1, characterized in that: A mounting plate (14) is mounted on the back of the preheater material spreading box (1), a rolling motor (16) is mounted on the mounting plate (14), and an output shaft of the rolling motor (16) is connected to the rotating shaft of the right rolling roller (3) via a flange.