A cyclone dynamic pressure gas type cyclone preheater exhaust dust cleaning device

Abstract

The application relates to the field of cement production equipment, in particular to a ring dynamic pressure gas type cyclone preheater waste gas dust cleaning device which comprises a box body, a cover plate, a dust collecting box, a limiting support, a dust filtering belt and a wind driving system; two air inlet pipes one and two for air inlet are symmetrically arranged at the left and right ends of the box body; the dust collecting box body is pressurized by utilizing the action of a piston and a gas cylinder, then the dust on the dust filtering belt is cleaned by utilizing the impact force of high-pressure air, the dust removal efficiency is high, and the cost is low; the dust attached to the dust filtering belt at the air inlet pipe opening can be timely transferred and cleaned away through the continuous rotation of the dust filtering belt, so that real-time and continuous dust removal work is realized.

Description

Technical Field

[0001] This invention relates to the field of cement production equipment, specifically to a dust removal device for exhaust gas from a ring-type cyclone preheater. Background Technology

[0002] Cement is a powdery hydraulic inorganic binder that, when mixed with water to form a paste, hardens in air or water. It is used to bind granular materials such as sand and stone into mortar or concrete. The cement production process uses limestone, clay, and silica as the main raw materials, and involves the following steps: raw meal preparation (crushing, batching, and grinding to form raw meal), preheating and decomposition (using kiln exhaust gas to preheat the raw meal through a cyclone preheater), clinker calcination (feeding into a cement kiln to calcine into clinker), clinker cooling (usually using a grate cooler for ventilation and cooling), and grinding and packaging (adding appropriate amounts of gypsum and additives for grinding). During this process, the kiln exhaust gas, after being preheated by the cyclone preheater, contains a large amount of limestone dust and calcination smoke. Direct emission of this gas would cause serious air pollution. Summary of the Invention

[0003] Therefore, this invention was made in view of the above problems. The purpose of this invention is to solve the problem of dust and smoke pollution in the exhaust gas emissions of existing multi-stage cyclone preheating systems by setting up a wind-driven system, a dust filter belt, a piston and an air cylinder, using the flow of flue gas to drive the rotation of the dust filter belt, and pressurizing the flue gas to achieve dust removal. This invention achieves the above objective through the following technical solution:

[0004] A dust removal device for exhaust gas from a cyclone preheater with a circular air compression mechanism includes a housing, a cover plate, a dust collection box, a limiting bracket, a dust filter belt, and a wind-driven system. The housing has two symmetrically arranged air inlet pipes (one and two) at its left and right ends. A dust collection box for collecting dust is located at each of the front and rear ends of the housing. A limiting bracket is fixedly installed inside the housing. The limiting bracket consists of a hexagonal frame plate, connecting column shells, air cylinders, a drive roller, and a limiting roller. Each corner of the hexagonal frame plate has a mounting hole (one and two). The hexagonal frame plate also has a hexagonal limiting groove. Six connecting column shells are located at each corresponding corner of the hexagonal frame plates. Two air cylinders are symmetrically arranged on the inner sides of the upper and lower hexagonal frame plates. A drive roller and a limiting roller are rotatably installed between each mounting hole (one and two) of the upper and lower hexagonal frame plates. The drive rollers are provided with rotating teeth at both ends. A dust filter belt is movably installed between each drive roller and the limiting roller. The outer end face of the dust filter belt is provided with symmetrical teeth. A wind drive system is provided inside the air cylinder. The wind drive system consists of an impeller, a rotating shaft, an incomplete gear, an internal gear plate, a piston, a pulley one, a pulley two, and a synchronous belt. The impeller is rotatably installed inside the air outlet pipe. A rotating shaft is fixedly installed inside the impeller. An incomplete gear is fixedly installed on the rotating shaft at a position corresponding to the center of the air cylinder. The internal gear plate is a plate-shaped structure with symmetrical teeth inside. A piston is fixedly installed at each end of the internal gear plate. The pistons at both ends are movably installed inside the air cylinders at both ends. A pulley one is fixedly installed at the bottom end of the rotating shaft. A pulley two is fixedly installed at the lower end of one of the drive rollers inside the limiting bracket. A synchronous belt is provided between pulley one and pulley two to drive and connect them.

[0005] Preferably, there are two hexagonal shelf panels, and the two hexagonal shelf panels are arranged symmetrically at the top and bottom.

[0006] Preferably, the connecting column shell is a semi-circular column, and the connecting column shells at the six corners limit and fix the upper and lower hexagonal frame plates.

[0007] Preferably, the inner circumference of the air cylinder is provided with multiple air inlet slots.

[0008] Preferably, the teeth on the drive roller can all mesh with the belt teeth.

[0009] Preferably, the teeth inside the internal gear plate can mesh with the incomplete teeth on the incomplete gear.

[0010] Beneficial effects of this invention:

[0011] 1. By using the action of piston and air cylinder, the air inside the dust collector is pressurized, and then the impact force of high-pressure air is used to clean the dust on the filter belt, resulting in high dust removal efficiency and low cost.

[0012] 2. Through the continuous rotation of the dust filter belt, the dust attached to the dust filter belt at the air inlet can be transferred and cleaned in a timely manner, realizing real-time continuous dust removal.

[0013] 3. By setting up a wind-driven system, the dust filter belt can be rotated and the piston can be moved by the flue gas, which is more cost-effective and does not require a dedicated power unit. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a cyclone preheater exhaust gas dust cleaning device according to the present invention.

[0015] Figure 2 This is a partial structural schematic diagram of a cyclone preheater exhaust gas dust cleaning device according to the present invention.

[0016] Figure 3 This is an exploded schematic diagram of a portion of the structure of a cyclone preheater exhaust gas dust cleaning device according to the present invention.

[0017] Figure 4 This is a top view of a dust removal device for a cyclone preheater using a circular air-pressure type.

[0018] Figure 5 for Figure 4 Sectional view along line AA.

[0019] Figure 6 for Figure 4 Sectional view along the BB line.

[0020] Explanation of reference numerals in the attached drawings: 100, housing; 110, air inlet pipe one; 120, air inlet pipe two; 200, cover plate; 210, air outlet pipe; 300, dust collection box; 400, limiting bracket; 410, hexagonal frame plate; 411, mounting hole one; 412, mounting hole two; 413, limiting groove; 420, connecting column shell; 430, air cylinder; 431, air inlet slot; 440, drive roller; 441, rotating gear; 450, limiting roller; 500, dust filter belt; 510, toothed belt; 600, wind drive system; 610, impeller; 620, rotating shaft; 630, incomplete gear; 640, internal gear plate; 650, piston; 660, pulley one; 670, pulley two; 680, synchronous belt. Detailed Implementation

[0021] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can also be implemented in various different forms, and therefore the present invention is not limited to the embodiments described below. In addition, for the purpose of more clearly describing the present invention, parts not connected to the invention will be omitted from the drawings.

[0022] like Figure 1 , 2 As shown, a dust removal device for exhaust gas from a cyclone preheater with a circular air compression system includes: a housing 100, a cover plate 200, a dust collection box 300, a limiting bracket 400, a dust filter belt 500, and a wind drive system 600.

[0023] like Figure 2 As shown, the box 100 is a hexagonal shell. Two air intake pipes 110 and 120 for air intake are symmetrically provided at the left and right ends of the box 100. A dust collection box 300 for collecting dust is provided at the front and rear ends of the box 100. A limiting bracket 400 is fixedly installed inside the box 100.

[0024] like Figures 3 to 6 As shown, the limiting bracket 400 consists of a hexagonal frame plate 410, connecting column shells 420, an air cylinder 430, a drive roller 440, and a limiting roller 450. The hexagonal frame plate 410 is a hexagonal plate body. Each corner of the hexagonal frame plate 410 has a mounting hole 411 and a mounting hole 412. A hexagonal limiting groove 413 is also provided on the plate body. There are two hexagonal frame plates 410, arranged symmetrically vertically. Six connecting column shells 420 are provided at each corresponding corner between the two hexagonal frame plates 410. Each connecting column shell 420 is a semi-circular column. The six corner connecting column shells 420 connect the upper and lower hexagonal plates. The frame plate 410 is fixed in a limiting position. Two air cylinders 430 are symmetrically arranged on the inner side surfaces of the upper and lower hexagonal frame plates 410. Each air cylinder 430 has multiple air inlet slots 431 on its inner end circumference. A drive roller 440 and a limiting roller 450 are rotatably installed between each mounting hole 411 and each mounting hole 412 of the upper and lower hexagonal frame plates 410. The drive roller 440 has rotating teeth 441 at both ends. A dust filter belt 500 is movably installed between each drive roller 440 and the limiting roller 450. The outer end surface of the dust filter belt 500 has symmetrical belt teeth 510, and the rotating teeth 441 on each drive roller 440 can mesh with the belt teeth 510.

[0025] The wind-driven system 600 comprises an impeller 610, a shaft 620, an incomplete gear 630, an internal gear plate 640, a piston 650, a first pulley 660, a second pulley 670, and a synchronous belt 680. The impeller 610 is rotatably mounted inside the air outlet pipe 210. The shaft 620 is fixedly mounted inside the impeller 610. An incomplete gear 630 is fixedly mounted on the shaft 620 at a position corresponding to the center of the air cylinder 430. The internal gear plate 640 is a plate-shaped structure with symmetrical teeth inside. The teeth inside the internal gear plate 640 can mesh with the incomplete teeth on the incomplete gear 630. A piston 650 is fixedly installed at each end of the toothed plate 640. The pistons 650 at both ends are movably installed inside the air cylinders 430 at both ends. When the impeller 610 drives the incomplete gear 630 to rotate under the action of airflow, the pistons 650 at both ends will reciprocate inside the air cylinders 430 at both ends. A pulley 660 is fixedly installed at the bottom end of the rotating shaft 620. A pulley 670 is fixedly installed at the lower end of one of the drive rollers 440 inside the limiting bracket 400. A synchronous belt 680 is provided between the pulley 660 and the pulley 670 to drive the pulley 660 and the pulley 670.

[0026] Working principle of this invention:

[0027] The flue gas discharged from the cyclone preheater enters the housing 100 through inlet pipe 110 and inlet pipe 120. As the flue gas passes through the dust filter belt 500, dust and particulate matter in the flue gas are trapped inside the dust filter belt 500. The cleaned flue gas is then discharged through outlet pipe 210 on the cover plate 200. During the discharge process, the high-speed flow of the flue gas drives the impeller 610 to rotate. The rotation of the impeller 610, via the synchronous belt 680, drives the drive roller 440, which is equipped with pulley 670, to rotate. The drive roller 440, through the rotating teeth 441, drives the dust filter belt 500 to rotate. Due to the rotation of the dust filter belt 500, the dust removal area directly in front of inlet pipe 110 and inlet pipe 120 is moved to the area directly in front of the air cylinder 430. In the dust removal area, the impeller 610 rotates, which in turn drives the internal gear plate 640 to reciprocate within the air cylinders 430 on both sides via the incomplete gear 630. During the movement of the internal gear plate 640, the piston 650 on the internal gear plate 640 accelerates the air inside the air cylinder 430. The accelerated air is then ejected outward from inside the dust filter belt 500. As the high-speed gas is ejected from the dust filter belt 500 in the dust removal area, it carries away the dust adhering to the dust filter belt 500. After the dust leaves the dust filter belt 500, it will enter the dust collection box 300 for collection with the airflow. Since the dust filter belt 500 is rotating at this time, the dust filter belt 500, which has been cleaned in the dust removal area directly in front of the air cylinder 430, will return to the dust removal area directly in front of the first air inlet pipe 110 and the second air inlet pipe 120 to continue the dust removal work.

Claims

1. A dust removal device for exhaust gas from a cyclone preheater with a circular air compression mechanism, comprising a housing (100), a cover plate (200), a dust collection box (300), a limiting bracket (400), a dust filter belt (500), and a wind-driven system (600); characterized in that: The box (100) has two air intake pipes (110 and 120) symmetrically arranged at its left and right ends for air intake; a dust collection box (300) for collecting dust is provided at each of the front and rear ends of the box (100); a limiting bracket (400) is fixedly installed inside the box (100); the limiting bracket (400) is composed of a hexagonal frame plate (410), a connecting column shell (420), an air cylinder (430), a drive roller (440), and a limiting roller (450); each corner of the hexagonal frame plate (410) is provided with a mounting hole (411) and a mounting hole (412); the hexagonal frame plate (410) The plate body is also provided with a hexagonal limiting groove (413); six connecting column shells (420) are provided at each corresponding corner between the hexagonal frame plates (410), and two air cylinders (430) are symmetrically provided on the inner side surfaces of the upper and lower hexagonal frame plates (410); a drive roller (440) and a limiting roller (450) are rotatably installed between each mounting hole one (411) and each mounting hole two (412) of the upper and lower hexagonal frame plates (410); the drive roller (440) is provided with rotating teeth (441) at both ends, and a dust filter belt (500) is movably installed between each drive roller (440) and the limiting roller (450). The outer end face of the dust filter belt (500) is provided with symmetrical teeth (510); the inner end of the air cylinder (430) is provided with a wind drive system (600); the wind drive system (600) is composed of an impeller (610), a rotating shaft (620), an incomplete gear (630), an internal gear plate (640), a piston (650), a pulley one (660), a pulley two (670), and a synchronous belt (680); the impeller (610) is rotatably installed in the air outlet pipe (210), and the rotating shaft (620) is fixedly installed inside the impeller (610), and a toothed belt is fixedly installed on the rotating shaft (620) at a position corresponding to the center of the air cylinder (430). Incomplete gear (630); the internal gear plate (640) is a plate-shaped structure with symmetrical gear teeth inside, and a piston (650) is fixedly installed at each end of the internal gear plate (640). The pistons (650) at both ends are movably installed in the air cylinders (430) at both ends; a pulley one (660) is fixedly installed at the bottom end of the rotating shaft (620), and a pulley two (670) is fixedly installed at the lower end of one of the drive rollers (440) inside the limiting bracket (400). A synchronous belt (680) is provided between the pulley one (660) and the pulley two (670) to drive and connect the pulley one (660) and the pulley two (670); The teeth inside the internal gear plate (640) can mesh with the incomplete teeth on the incomplete gear (630); The piston (650) accelerates the air inside the air cylinder (430). The accelerated air is ejected from inside the dust filter belt (500). The high-speed gas carries away the dust attached to the dust filter belt (500). After the dust leaves the dust filter belt (500), it enters the dust collection box (300) for collection. The dust filter belt (500) that has been cleaned in the dust removal area directly in front of the air cylinder (430) rotates back to the dust removal area directly in front of the first air inlet pipe (110) and the second air inlet pipe (120) to continue the dust removal work.

2. The exhaust gas dust cleaning device for a ring-type cyclone preheater according to claim 1, characterized in that: The number of hexagonal frame plates (410) is two, and the two hexagonal frame plates (410) are arranged symmetrically on top of each other.

3. The exhaust gas dust cleaning device for a ring-type cyclone preheater according to claim 1, characterized in that: The connecting column shell (420) is a semi-circular column, and the connecting column shells (420) at the six corners limit and fix the upper and lower hexagonal frame plates (410).

4. The exhaust gas dust cleaning device for a ring-type cyclone preheater according to claim 1, characterized in that: The air cylinder (430) has multiple air inlets (431) on its inner circumference.

5. The exhaust gas dust cleaning device for a ring-type cyclone preheater according to claim 1, characterized in that: The teeth (441) on the drive roller (440) can all mesh with the belt teeth (510).

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