A pretreatment system for alternative fuels used in cement kilns
By introducing innovative designs such as crushing boxes, crushing rollers, and filter plates into the cement kiln pretreatment system, the problem of localized accumulation of alternative fuels on the crushing rollers has been solved, achieving uniform fuel delivery and efficient crushing, and improving equipment lifespan and combustion efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BO AI BBMG
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-03
AI Technical Summary
In existing alternative fuel pretreatment systems, the localized accumulation of alternative fuel on the crushing rollers leads to increased equipment wear and reduced crushing efficiency.
By coordinating components such as crushing box, crushing roller, filter plate, reciprocating screw, motor, connecting plate, feeding shell, gear and rack, the system achieves uniform and intermittent feeding of alternative fuels, reducing the risk of local accumulation. Substandard fuels are collected and reprocessed through collection box and filter plate.
This effectively reduces the risk of material accumulation in localized areas of the crushing roller, improves crushing efficiency, and ensures the uniformity and quality of the fuel.
Smart Images
Figure CN224443242U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fuel pretreatment technology, specifically a pretreatment system for alternative fuels used in cement kilns. Background Technology
[0002] In the field of fuel innovation in cement kilns, alternative fuels (also known as secondary fuels or auxiliary fuels) have demonstrated significant advantages in clinker production through the resource utilization of combustible waste. They not only substantially save on primary energy sources such as natural fossil fuels, but also achieve environmental benefits by reducing waste emissions, exhibiting outstanding economic, environmental, and social benefits. However, before being put into use, these fuels must be processed using pretreatment equipment to meet the stringent requirements of cement kiln combustion systems regarding fuel particle size, moisture content, and compositional uniformity, thereby ensuring efficient and stable combustion and reducing pollutant emissions.
[0003] Existing alternative fuel pretreatment systems typically employ crushing devices to initially process various alternative fuels, aiming to standardize fuel particle size and lay the foundation for subsequent processing and uniform combustion.
[0004] However, some current crushing devices have significant defects in their feeding methods: alternative fuels are directly fed to the crushing rollers from a fixed position, resulting in a large accumulation of material in a local area of the crushing rollers. This uneven load distribution not only aggravates equipment wear, but also reduces crushing efficiency due to local overload, ultimately affecting the efficiency of the entire pretreatment process. Therefore, a pretreatment system using alternative fuels in cement kilns is proposed to address the above problems. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a pretreatment system for the use of alternative fuels in cement kilns.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A pretreatment system for alternative fuels used in cement kilns, comprising a crushing box; a crushing roller is provided in the middle of the crushing box; a filter plate is installed in the middle of the crushing box at the bottom side of the crushing roller; a support frame is fixedly connected to the side wall of the top of the crushing box; a discharge box is fixedly connected to the top side wall of the support frame; a discharge shell is slidably connected to the top of the crushing box; the top of the discharge shell is slidably connected to the bottom of the discharge box; a connecting plate is fixedly connected to the side wall of the discharge shell; a reciprocating screw is provided in the middle of the bottom of the connecting plate; a motor is installed at the end of the reciprocating screw; and the reciprocating screw is driven by the motor; a fixing frame is fixedly connected to the outer wall of the motor; and the side wall of the end of the fixing frame is fixedly connected to the side wall of the top of the crushing box.
[0007] Preferably, a feeding roller is rotatably connected to the middle of the feeding shell; a rotating rod is fixedly connected to the end of the feeding roller; the outer wall of the end of the rotating rod is rotatably connected to the inner wall of the end of the feeding shell; a gear is fixedly connected to the outer wall of the rotating rod; a rack is fixedly connected to the side wall of the top of the crushing box; the gear and the rack mesh with each other.
[0008] Preferably, a discharge shell is fixedly connected to the side wall at the bottom of the crushing box; a support shell is fixedly connected to the side wall of the crushing box at the bottom side of the discharge shell; a collection box is slidably mounted in the middle of the support shell; and a handle is fixedly connected to the side wall of the collection box.
[0009] Preferably, a fixing block is fixedly connected to the side wall of the crushing box; the other end of the reciprocating screw is rotatably connected to the side wall of the fixing block.
[0010] Preferably, a baffle is fixedly connected to the top of the discharge shell, and the baffle is slidably connected to the inner wall of the bottom of the discharge box. Multiple sets of baffles are provided, and the multiple sets of baffles are symmetrically arranged with the center line of the discharge shell as the axis of symmetry.
[0011] Preferably, an inclined plate is fixed to the inner wall of the top of the feed shell, and the bottom of the inclined plate slides on the outer wall of the feed roller.
[0012] Preferably, the side wall of the collection box is rotatably connected to a hook; the side wall of the support shell is fixedly connected to a locking block; and the end of the hook is engaged with the middle of the locking block.
[0013] The beneficial effects of this utility model are:
[0014] 1. This utility model provides a pretreatment system for the use of alternative fuels in cement kilns. Through the cooperation between the connecting plate, reciprocating screw, motor and fixed frame, the feed shell can reciprocate between the crushing box and the discharge box. The alternative fuel inside the discharge box can be evenly poured onto the crushing roller, reducing the risk of material accumulating in a large amount in a local area of the crushing roller and ensuring crushing efficiency.
[0015] 2. This utility model provides a pretreatment system for alternative fuels used in cement kilns. Through the cooperation between the rack, gear, rotating rod and the feeding roller, the alternative fuel can be fed intermittently, which further reduces the risk of alternative fuel accumulating on the crushing roller. Through the cooperation between the collection box, handle, discharge shell and filter plate, the unqualified alternative fuel can be filtered and collected, which facilitates secondary processing. Attached Figure Description
[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0017] Figure 1 This is a perspective view of the overall device of this utility model;
[0018] Figure 2 This is a perspective view of the crushing box and the feeding box in this utility model;
[0019] Figure 3 This is a three-dimensional sectional view of the feeding and unloading shell in this utility model.
[0020] Figure 4 This is a three-dimensional sectional view of the feed shell and gear in this utility model.
[0021] Figure 5 This is a three-dimensional view of the collection box and the support shell in this utility model.
[0022] Legend:
[0023] 1. Crushing box; 2. Discharge box; 3. Discharge shell; 31. Inclined plate; 4. Connecting plate; 41. Reciprocating screw; 42. Motor; 43. Fixing frame; 44. Fixing block; 5. Rack; 51. Gear; 52. Rotating rod; 53. Discharge roller; 6. Baffle; 7. Support shell; 71. Locking block; 72. Collection box; 73. Handle; 74. Hook; 8. Discharge shell; 9. Support frame; 10. Filter plate. Detailed Implementation
[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0025] Specific implementation examples are given below.
[0026] Please see Figures 1-5This utility model provides a pretreatment system for alternative fuels used in cement kilns, including a crushing box 1; a crushing roller is provided in the middle of the crushing box 1; a filter plate 10 is installed in the middle of the crushing box 1 at the bottom side of the crushing roller; a support frame 9 is fixedly connected to the side wall of the top of the crushing box 1; a discharge box 2 is fixedly connected to the top side wall of the support frame 9; a discharge shell 3 is slidably connected to the top of the crushing box 1; the top of the discharge shell 3 is slidably connected to the bottom of the discharge box 2; a connecting plate 4 is fixedly connected to the side wall of the discharge shell 3; a reciprocating screw 41 is provided in the middle of the bottom of the connecting plate 4; a motor 42 is installed at the end of the reciprocating screw 41; and the reciprocating screw 41 is driven by the motor 42; a fixing frame 43 is fixedly connected to the outer wall of the motor 42; the side wall of the end of the fixing frame 43 is fixedly connected to the side wall of the top of the crushing box 1; when it is necessary to crush and pre-process the alternative fuel for cement kilns during operation, the filter plate 1 can be used to pre-process the alternative fuel for cement kilns. Alternative fuel is placed inside the feeding box 2, and then the motor 42 is started to drive the reciprocating screw 41 to rotate. At this time, the connecting plate 4 set on the outer wall of the reciprocating screw 41 will reciprocate through the special texture on the outer wall of the reciprocating screw 41. The connecting plate 4 will drive the feeding shell 3 to reciprocate between the feeding box 2 and the crushing box 1. The alternative fuel inside the feeding box 2 will enter the inner wall of the crushing box 1 through the feeding shell 3. In this way, the reciprocating feeding shell 3 will evenly feed the alternative fuel onto the crushing roller set inside the crushing box 1, reducing the risk of material accumulating in a large amount in a local area of the crushing roller and ensuring crushing efficiency. The reciprocating screw 41 is existing technology. Its outer wall is set with special texture to ensure that the reciprocating screw 41 set on its outer wall will perform linear reciprocating motion when rotating. Since it is existing technology and those skilled in the art are familiar with its working principle, it will not be described here.
[0027] Furthermore, such as Figure 2 and Figure 4 As shown, a feeding roller 53 is rotatably connected to the middle of the feeding shell 3; a rotating rod 52 is fixedly connected to the end of the feeding roller 53; the outer wall of the end of the rotating rod 52 is rotatably connected to the inner wall of the end of the feeding shell 3; a gear 51 is fixedly connected to the outer wall of the rotating rod 52; a rack 5 is fixedly connected to the side wall of the top of the crushing box 1; the gear 51 and the rack 5 mesh with each other. When the feeding shell 3 moves, the feeding roller 53, the rotating rod 52 and the gear 51 in the middle will move together. Since the gear 51 and the rack 5 mesh with each other, the gear 51 will rotate when it moves. The gear 51 will drive the rotating rod 52 to rotate, and the rotating rod 52 will drive the feeding roller 53 to rotate. In this way, the alternative fuel that enters the middle of the feeding shell 3 can be indirectly sent into the middle of the crushing box 1 through the notch opened on the outer wall of the feeding roller 53, further reducing the accumulation of alternative fuel on the top of the crushing roller.
[0028] Furthermore, such as Figures 1-2 and Figure 5As shown, a discharge shell 8 is fixedly connected to the side wall of the bottom of the crushing box 1; a support shell 7 is fixedly connected to the side wall of the crushing box 1 at the bottom of the discharge shell 8; a collection box 72 is slidably mounted in the middle of the support shell 7; a handle 73 is fixedly connected to the side wall of the collection box 72. During operation, the crushed substitute material can be filtered through the filter plate 10. Some unqualified materials will fall into the middle of the collection box 72 set in the middle of the support shell 7 along the slope of the filter plate 10. When a certain amount is collected, the worker can hold the handle 73 and pull the collection box 72 out from the middle of the clamp 71 to perform secondary processing on the collected substitute fuel, thus ensuring the quality of the fuel.
[0029] Furthermore, such as Figure 3 As shown, a fixing block 44 is fixedly connected to the side wall of the crushing box 1; the other end of the reciprocating screw 41 is rotatably connected to the side wall of the fixing block 44. During operation, the fixing block 44 supports the end of the reciprocating screw 41, ensuring the stability of the rotation of the reciprocating screw 41 and improving its practicality.
[0030] Furthermore, such as Figures 1-3 As shown, a baffle 6 is fixedly connected to the top of the feed hull 3. The baffle 6 is slidably connected to the inner wall of the bottom of the discharge box 2. Multiple sets of baffles 6 are provided, and the multiple sets of baffles 6 are symmetrically arranged with the center line of the feed hull 3 as the axis of symmetry. During operation, the multiple sets of baffles 6 will move with the feed hull 3 to ensure that the alternative fuel in the middle of the discharge box 2 can only fall into the middle of the crushing box 1 through the feed hull 3.
[0031] Furthermore, such as Figure 4 As shown, an inclined plate 31 is fixed to the inner wall of the top of the feeding shell 3. The bottom of the inclined plate 31 slides on the outer wall of the feeding roller 53. During operation, the inclined plate 31 ensures that the material entering the middle of the feeding shell 3 can accurately enter the inside of the notch of the feeding roller 53, thus improving practicality.
[0032] Furthermore, such as Figure 5 As shown, a hook 74 is rotatably connected to the side wall of the collection box 72; a locking block 71 is fixedly connected to the side wall of the support shell 7; the end of the hook 74 is locked in the middle of the locking block 71. During operation, the cooperation between the hook 74 and the locking block 71 ensures the stability of the collection box 72 installed in the middle of the support shell 7, reduces the risk of the collection box 72 sliding out of the middle of the support shell 7, and improves practicality. When the collection box 72 needs to be removed, simply rotate the hook 74 so that it does not contact the locking block 71. During installation, push the collection box 72 completely into the middle of the support shell 7, and then rotate the hook 74 so that it is locked in the middle of the locking block 71.
[0033] Working principle: When it is necessary to pre-process the alternative fuel for cement kiln crushing, the alternative fuel can be put into the inside of the feeding box 2. Then, the motor 42 is started to drive the reciprocating screw 41 to rotate. At this time, the connecting plate 4 set on the outer wall of the reciprocating screw 41 will reciprocate through the special texture on the outer wall of the reciprocating screw 41. The connecting plate 4 will drive the feeding shell 3 to reciprocate between the feeding box 2 and the crushing box 1. The alternative fuel inside the feeding box 2 will enter the inner wall of the crushing box 1 through the feeding shell 3. In this way, the reciprocating feeding shell 3 will evenly feed the alternative fuel onto the crushing roller set inside the crushing box 1, reducing the risk of material accumulating in a large amount in a local area of the crushing roller and ensuring crushing efficiency. When the feeding shell 3 moves, multiple sets of baffles 6 will move together to ensure that the alternative fuel in the middle of the feeding box 2 can only fall into the middle of the crushing box 1 through the feeding shell 3.
[0034] When the feed shell 3 moves, the feed roller 53, rotating rod 52 and gear 51 set in its middle will move together. Since the gear 51 and the rack 5 mesh with each other, the gear 51 will rotate when it moves. The gear 51 will drive the rotating rod 52 to rotate, and the rotating rod 52 will drive the feed roller 53 to rotate. In this way, the alternative fuel that enters the middle of the feed shell 3 can be indirectly sent into the middle of the crushing box 1 through the notch opened on the outer wall of the feed roller 53, which further reduces the accumulation of alternative fuel on the top of the crushing roller.
[0035] The connecting plate 4 can filter the crushed substitute material through the filter plate 10. Some unqualified materials will pass through the discharge shell 8 along the slope of the filter plate 10 and fall into the middle of the collection box 72 set in the middle of the support shell 7. When a certain amount is collected, the collection box 72 needs to be taken out. Simply rotate the hook 74 so that it does not contact the locking block 71. During installation, push the collection box 72 completely into the middle of the support shell 7, and then rotate the hook 74 so that it is locked in the middle of the locking block 71.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A pre-treatment system for the use of alternative fuels in cement kilns, comprising a crushing box (1); characterized by the fact that: A crushing roller is provided in the middle of the crushing box (1); a filter plate (10) is installed in the middle of the crushing box (1) at the bottom side of the crushing roller; a support frame (9) is fixed to the side wall of the top of the crushing box (1); a feeding box (2) is fixed to the top side wall of the support frame (9); a feeding shell (3) is slidably connected to the top of the crushing box (1); the top of the feeding shell (3) is slidably connected to the bottom of the feeding box (2); a connecting plate (4) is fixed to the side wall of the feeding shell (3); a reciprocating screw (41) is provided in the middle of the bottom of the connecting plate (4); a motor (42) is installed at the end of the reciprocating screw (41); and the reciprocating screw (41) is driven by the motor (42); a fixing frame (43) is fixed to the outer wall of the motor (42); the side wall of the end of the fixing frame (43) is fixed to the side wall of the top of the crushing box (1).
2. A pre-treatment system for use of a substitute fuel in a cement kiln according to claim 1, characterized in that: A feeding roller (53) is rotatably connected to the middle of the feeding shell (3); a rotating rod (52) is fixedly connected to the end of the feeding roller (53); the outer wall of the end of the rotating rod (52) is rotatably connected to the inner wall of the end of the feeding shell (3); a gear (51) is fixedly connected to the outer wall of the rotating rod (52); a rack (5) is fixedly connected to the side wall of the top of the crushing box (1); the gear (51) and the rack (5) mesh with each other.
3. A pre-treatment system for use of a substitute fuel in a cement kiln according to claim 2, characterized in that: A discharge shell (8) is fixedly connected to the side wall at the bottom of the crushing box (1); a support shell (7) is fixedly connected to the side wall of the crushing box (1) at the bottom side of the discharge shell (8); a collection box (72) is slidably connected to the middle of the support shell (7); a handle (73) is fixedly connected to the side wall of the collection box (72).
4. A pre-treatment system for use of a substitute fuel in a cement kiln according to claim 1, characterized in that: The side wall of the crushing box (1) is fixedly connected to a fixing block (44); the other end of the reciprocating screw (41) is rotatably connected to the side wall of the fixing block (44).
5. A pre-treatment system for use of a substitute fuel in a cement kiln according to claim 1, characterized in that: The top of the feed shell (3) is fixedly connected to a baffle (6), which is slidably connected to the inner wall of the bottom of the feed box (2). There are multiple sets of baffles (6), and the multiple sets of baffles (6) are symmetrically arranged with the center line of the feed shell (3) as the axis of symmetry.
6. A pre-treatment system for use of a substitute fuel in a cement kiln according to claim 2, characterized in that: An inclined plate (31) is fixed to the inner wall of the top of the feed shell (3), and the bottom of the inclined plate (31) slides on the outer wall of the feed roller (53).
7. A pre-treatment system for use of a substitute fuel in a cement kiln according to claim 3, characterized in that: The side wall of the collection box (72) is rotatably connected to a hook (74); the side wall of the support shell (7) is fixedly connected to a locking block (71); the end of the hook (74) is locked into the middle of the locking block (71).