Preheater resistance reducing device

Abstract

The utility model belongs to the technical field of preheater equipment, and particularly relates to a resistance reducing device of a preheater, which comprises a cyclone cylinder, a hot air pipe is connected onto the cyclone cylinder, and a resistance reducing structure is arranged on the hot air pipe. The resistance reducing structure comprises a rack detachably connected with the hot air pipe, a sliding block is connected to the rack in a sliding mode, and a knocking cylinder is fixedly connected to the sliding block. A sliding cylinder is connected to the knocking cylinder in a sliding mode, a knocking head corresponding to the hot air pipe is fixedly connected to the sliding cylinder, and a jacking spring matched with the sliding cylinder is arranged on the knocking cylinder; fan-shaped blocks corresponding to the knocking heads are uniformly distributed on the rack; the utility model effectively solves the problem that the hot air pipe of the existing preheater is easy to crust and block, so that the resistance of the hot air pipe is larger.

Description

Technical Field

[0001] The utility model belongs to the technical field of preheater equipment, and particularly relates to a resistance reducing device for a preheater. Background Art

[0002] The main function of a cement preheater is to preheat the raw meal entering the rotary kiln by using the waste heat of high-temperature flue gas, so as to improve the thermal efficiency and production efficiency of the whole calcination system. The preheater usually consists of multiple cascaded cyclones. The raw meal is added from the upper part of the preheater and enters each stage of the cyclone through highly dispersed in the rising air flow. Inside the cyclone, the raw meal uses the centrifugal force to carry out gas-solid separation, the waste gas is discharged, and the raw meal powder is carried to the next stage of the cyclone for further preheating and temperature rising.

[0003] When the existing preheater is in use, the hot air pipe is prone to crust blockage, resulting in uneven air velocity in the hot air pipe; when the air velocity is not sufficient to disperse and lift a large amount of raw meal, the raw meal is likely to directly fall into the kiln through the cyclone or the decomposition furnace, affecting the preheating effect of the preheater. Summary of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a resistance reducing device for a preheater, which effectively solves the problem that the hot air pipe of the existing preheater is prone to crust blockage, resulting in a large resistance in the hot air pipe.

[0005] To achieve the above object, the utility model adopts the following technical scheme: A resistance reducing device for a preheater, including a cyclone, a hot air pipe is connected to the cyclone, and a resistance reducing structure is arranged on the hot air pipe; the resistance reducing structure includes a frame detachably connected to the hot air pipe, a slider is slidably connected to the frame, and a knocking cylinder is fixedly connected to the slider; a sliding cylinder is slidably connected to the knocking cylinder, a knocking head corresponding to the hot air pipe is fixedly connected to the sliding cylinder, and a top spring cooperating with the sliding cylinder is arranged on the knocking cylinder; sector blocks corresponding to the knocking heads are evenly distributed on the frame.

[0006] Further, the frame includes connecting plates arranged on both sides of the sector block, and fixing components are fixedly connected to both ends of the connecting plates; mounting plates are fixedly connected to a pair of the connecting plates, mounting holes are evenly distributed on the mounting plates, and the sector block is detachably connected to the mounting plate.

[0007] Further, mounting blocks are fixedly connected to both ends of the sector block, through holes corresponding to the mounting holes are arranged on the mounting blocks, and mounting bolts corresponding to the mounting holes are penetrated through the through holes.

[0008] Further, a sector-shaped fitting block fitting with the hot air pipe is fixedly connected to the sector block.

[0009] Further, the fixing component includes a semi-circular fixing ring fixedly connected to the connecting plate and a movable ring corresponding to the fixing ring. Both ends of the fixing ring and the movable ring are fixedly connected with ear plates; fixing holes are provided on the ear plates, and fixing bolts are provided on the fixing holes.

[0010] Further, the distance between adjacent mounting holes is greater than the diameter of the knocking head.

[0011] Further, a support plate is fixedly connected to the fixing ring, and a motor is fixedly connected to the support plate; a screw rod is fixedly connected to the output end of the motor, and the slider is screwed to the screw rod.

[0012] Further, a guide rod for guiding the slider is also provided on the support plate, and a guide hole cooperating with the guide rod is provided on the slider.

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

[0014] When the present utility model is in use, the knocking cylinder, the sliding cylinder, the knocking head, etc. are driven by the slider to move linearly. Under the action of the sector block, the knocking head knocks on multiple parts of the hot air pipe, causing the hot air pipe to vibrate at multiple parts, which can effectively slow down the scaling and blockage of the hot air pipe, improve the flow rate of the hot air in the hot air pipe, and improve the preheating effect of the preheater on the raw meal. Description of the Drawings

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 is a structural schematic diagram of the resistance reduction structure in the present utility model;

[0017] Figure 3 is a schematic diagram of the cooperation state of structures such as the sector block, the fitting block, and the mounting block in the present utility model;

[0018] Figure 4 is a schematic diagram of the cooperation state of structures such as the slider, the knocking cylinder, the sliding cylinder, and the knocking head in the present utility model;

[0019] In the figure: 1, cyclone; 2, discharge pipe; 3, hot air pipe; 4, resistance reduction structure; 5, motor; 6, fixing ring; 7, connecting plate; 8, mounting plate; 9, mounting hole; 10, sector block; 11, screw rod; 12, knocking cylinder; 13, slider; 14, guide rod; 15, fitting block; 16, mounting block; 17, top spring; 18, sliding cylinder; 19, knocking head. Detailed Embodiments

[0020] A preheater resistance reduction device, as Figures 1-4As shown in the figure, it includes a cyclone 1. A hot air pipe 3 is connected to the cyclone 1. The hot air pipe 3 communicates with the top of another stage of cyclone 1. A resistance reduction structure 4 is provided on the hot air pipe 3. The bottom of the cyclone 1 is also communicated with a discharge pipe 2, and the discharge pipe 2 communicates with the hot air pipe 3 of another stage. The resistance reduction structure 4 includes a frame detachably connected to the hot air pipe 3. A slider 13 is slidably connected to the frame. A knocking cylinder 12 is fixedly connected to the slider 13. A sliding cylinder 18 is slidably connected to the knocking cylinder 12. A knocking head 19 corresponding to the hot air pipe 3 is fixedly connected to the sliding cylinder 18. A top spring 17 cooperating with the sliding cylinder 18 is provided on the knocking cylinder 12. Sector blocks 10 corresponding to the knocking head 19 are evenly distributed on the frame.

[0021] When the utility model is in use, the resistance reduction structure 4 is installed on the hot air pipe 3 through the frame. The slider 13 is intermittently slid along the frame. The slider 13 drives the knocking cylinder 12 to move, and the knocking cylinder 12 drives the sliding cylinder 18, the knocking head 19, etc. to move. Under the action of the sector block 10, the knocking head 19 slides along the knocking cylinder 12 with the sliding cylinder 18. When the knocking head 19 is separated from the sector block 10, under the action of the top spring 17, the sliding cylinder 18 drives the knocking head 19 to move to knock multiple places of the hot air pipe 3, making the hot air pipe 3 vibrate in multiple places, which can effectively slow down the crusting and blockage of the hot air pipe 3, improve the flow rate of the hot air in the hot air pipe 3, and improve the preheating effect of the preheater on the raw meal.

[0022] Further, the frame includes connecting plates 7 provided on both sides of the sector block 10. Fixing components are fixedly connected to both ends of the connecting plates 7. Mounting plates 8 are fixedly connected to a pair of the connecting plates 7. Mounting holes 9 are evenly distributed on the mounting plates 8. The sector block 10 is detachably connected to the mounting plates 8. The distance between adjacent mounting holes 9 is greater than the diameter of the knocking head 19.

[0023] When the frame is in use, the connecting plates 7 are installed on the hot air branch pipe through the fixing components, and the sector block 10 is supported by the mounting plates 8 on the connecting plates 7. In addition, the sector block 10 is detachably connected to the mounting plates 8, making the sector block 10 convenient to replace and improving the convenience of this application.

[0024] Further, mounting blocks 16 are fixedly connected to both ends of the sector block 10. Through holes corresponding to the mounting holes 9 are provided on the mounting blocks 16. Mounting bolts corresponding to the mounting holes 9 are penetrated through the through holes. The mounting blocks 16 are connected to the mounting holes 9 by installing the mounting bolts through the through holes, realizing the detachable connection between the sector block 10 and the mounting plates 8, and improving the convenience of this application.

[0025] Further, a sector-shaped fitting block 15 fitting with the hot air pipe 3 is fixedly connected to the sector block 10. Through the arrangement of the fitting block 15, the sector block 10 fits with the hot air pipe 3 through the fitting block 15, which can effectively prevent the sector block 10 from shaking when the knocking head 19 contacts the sector block 10, and improve the stability of the sector block 10 during use.

[0026] Further, the fixing component includes a semi-circular fixing ring 6 fixedly connected to the connecting plate 7 and a movable ring corresponding to the fixing ring 6. Both ends of the fixing ring 6 and the movable ring are fixedly connected with ear plates; fixing holes are provided on the ear plates, and fixing bolts are provided on the fixing holes; by matching the fixing ring 6 with the movable ring, and then fixing the ear plates through the fixing bolts, the connecting plate 7 is fixed on the hot air pipe 3.

[0027] Further, a support plate is fixedly connected to the fixing ring 6, and a motor 5 is fixedly connected to the support plate; the output end of the motor 5 is fixedly connected with a screw rod 11, and the slider 13 is screwed with the screw rod 11; a guide rod 14 for guiding the slider 13 is further provided on the support plate, and a guide hole for cooperating with the guide rod 14 is provided on the slider 13; when the slider 13 needs to move, the motor 5 is started, the motor 5 drives the screw rod 11 to rotate, and the screw rod 11 drives the slider 13 to slide along the guide rod 14.

[0028] The working process of the utility model is as follows:

[0029] When the utility model is in use, by matching the fixing ring 6 with the movable ring, and then fixing the ear plates through the fixing bolts, the connecting plate 7 is fixed on the hot air pipe 3; the motor 5 is started, the motor 5 drives the screw rod 11 to rotate, and the screw rod 11 drives the slider 13 to slide along the guide rod 14; the slider 13 drives the knocking cylinder 12 to move, and the knocking cylinder 12 drives the sliding cylinder 18, the knocking head 19, etc. to move; under the action of the sector block 10, the knocking head 19 slides along the knocking cylinder 12 with the sliding cylinder 18. When the knocking head 19 is separated from the sector block 10, under the action of the top spring 17, the sliding cylinder 18 drives the knocking head 19 to move to knock multiple places of the hot air pipe 3, so that multiple places of the hot air pipe 3 vibrate, which can effectively slow down the scaling and blockage of the hot air pipe 3, improve the flow rate of the hot air in the hot air pipe 3, and improve the preheating effect of the preheater on the raw meal.

Claims

1. A preheater resistance reduction device, characterized in that: The invention comprises a cyclone cylinder (1), the cyclone cylinder (1) is connected to a hot air pipe (3), and a resistance reducing structure (4) is provided on the hot air pipe (3); the resistance reducing structure (4) comprises a frame detachably connected to the hot air pipe (3), a slider (13) is slidably connected to the frame, and a knocking cylinder (12) is fixedly connected to the slider (13); the knocking cylinder (12) is slidably connected to a slide cylinder (18), a knocking head (19) corresponding to the hot air pipe (3) is fixedly connected to the slide cylinder (18), and the knocking cylinder (12) is provided with a top spring (17) cooperating with the slide cylinder (18); and fan-shaped blocks (10) corresponding to the knocking heads (19) are evenly distributed on the frame.

2. The preheater resistance reduction device according to claim 1, characterized in that: The frame comprises connecting plates (7) arranged on both sides of the sector block (10), and both ends of the connecting plates (7) are fixedly connected to fixing components; a pair of the connecting plates (7) are fixedly connected to mounting plates (8), and the mounting plates (8) are evenly distributed with mounting holes (9), and the sector block (10) and the mounting plates (8) are detachably connected.

3. The preheater resistance reduction device according to claim 2, characterized in that: Both ends of the sector block (10) are fixedly connected to mounting blocks (16), the mounting blocks (16) are provided with through holes corresponding to the mounting holes (9), and mounting bolts corresponding to the mounting holes (9) are passed through the through holes.

4. The preheater resistance reduction device according to claim 3, characterized in that: A fan-shaped fitting block (15) that fits the hot air pipe (3) is fixedly connected to the fan-shaped block (10).

5. The preheater resistance reduction device according to claim 2, characterized in that: The fixing assembly comprises a semicircular fixing ring (6) fixedly connected to the connecting plate (7) and a movable ring corresponding to the fixing ring (6), and both ends of the fixing ring (6) and the movable ring are fixedly connected to ear plates; the ear plates are provided with fixing holes, and the fixing holes are provided with fixing bolts.

6. The preheater resistance reduction device according to claim 2, characterized in that: The distance between adjacent mounting holes (9) is greater than the diameter of the striking head (19).

7. The preheater resistance reduction device according to claim 5, characterized in that: A support plate is fixedly connected to the fixing ring (6), and a motor (5) is fixedly connected to the support plate; a screw rod (11) is fixedly connected to the output end of the motor (5), and a sliding block (13) is screwed to the screw rod (11).

8. The preheater resistance reduction device according to claim 7, characterized in that: The support plate is also provided with a guide rod (14) for guiding the slider (13), and the slider (13) is provided with a guide hole that cooperates with the guide rod (14).

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