A dust removal and flow aid device for connecting the air classifier and dust collector pipes
By installing an open inclined chute and an air inlet pipe at the bottom of the connecting pipe between the cement mill classifier and the dust collector, compressed air is used to blow up the accumulated dust and send it into the dust collector, solving the problem of dust accumulation in the connecting pipe, realizing online cleaning, and improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI CONCH DESIGN & RES INST OF BUILDING MATERIALS CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-07-10
AI Technical Summary
In the cement production process, the bottom of the connecting pipe between the cement mill and the dust collector is prone to dust accumulation due to its small angle, which leads to reduced conveying efficiency, increased system resistance, and affects the normal operation of the equipment. In addition, manual cleaning is time-consuming and labor-intensive, affecting the continuity of production and the health of workers.
An open inclined trough and an air inlet pipe are installed at the bottom of the connecting pipe. Compressed air is used to blow up the accumulated dust through the air vent and send it into the dust collector for collection, thus achieving online cleaning.
It enables online cleaning of ash accumulated at the bottom of connecting pipes, avoiding downtime, improving production continuity, and reducing labor intensity and economic losses.
Smart Images
Figure CN224475426U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air classifiers, specifically to a dust removal and flow aid device for the connecting pipe between an air classifier and a dust collector. Background Technology
[0002] In cement production, cement mill classifiers and dust collectors are key pieces of equipment, connected by pipelines to transport materials and collect dust. However, due to limitations in equipment layout, the angle at the bottom of the connecting pipeline is often too small, sometimes even less than 90°, making it prone to dust accumulation. Excessive dust accumulation can have many adverse effects on production, such as reducing pipeline transport efficiency, increasing system resistance, and affecting the normal operation of the classifier and dust collector, ultimately leading to a decrease in cement production efficiency.
[0003] To maintain normal production, it is usually necessary to clean the accumulated ash at the bottom of the connecting pipes. Currently, this typically requires stopping production and having workers manually clean the ash. This method of cleaning is not only time-consuming and labor-intensive, but the frequent shutdowns for cleaning also severely disrupt the continuity of cement production, causing significant economic losses to the company. Furthermore, the prolonged cleaning work places a heavy burden on workers, increasing their labor intensity and occupational health risks. Utility Model Content
[0004] The purpose of this utility model is to provide a dust removal and flow aid device for the connecting pipe of a classifier and a dust collector. This dust removal and flow aid device can clean the connecting pipe during the production process, thus avoiding the accumulation of dust at the bottom of the connecting pipe.
[0005] To achieve the above objectives, this utility model provides a dust removal and flow aid device for the connecting pipe of a classifier and a dust collector, including an open inclined groove at the bottom of the connecting pipe and an air inlet pipe fixedly connected to the bottom of the open inclined groove. An air storage chamber is provided in the open inclined groove, one end of the air inlet pipe is connected to the air storage chamber, and the other end is connected to a compressed air pipe.
[0006] A vent cover is fixedly installed at the upper opening of the air storage chamber. Compressed air is introduced into the air storage tank through the air inlet pipe, and the air in the air storage chamber moves upward through the vent cover.
[0007] Preferably, multiple open inclined grooves are provided, and the multiple open inclined grooves are evenly distributed along the bottom surface of the connecting pipe.
[0008] Preferably, the surface of the vent cover is covered with multiple small vent holes, and the vent cover provides resistance to the gas in the gas storage chamber.
[0009] Preferably, the gas consumption per unit area of the vent cover inside the gas storage chamber is 1.0–1.5 m³. 3 / min.㎡.
[0010] Preferably, the height of the gas storage chamber is set to 8-12mm.
[0011] Preferably, the compressed air pipe is equipped with a valve.
[0012] Preferably, pressure sensors are installed at both ends of the connecting pipe, and the pressure sensors are electrically connected to the valve.
[0013] According to the above technical solution, the open inclined groove of this utility model is set at the bottom of the connecting pipe, and the accumulated dust in the connecting pipe will fall onto the vent cover of the open inclined groove. The air inlet pipe sends compressed air from the compressed air pipe into the open inclined groove. The vent cover will generate resistance to the upward movement of the compressed air in the air storage chamber, so that the compressed air is stored in the air storage chamber. As the compressed air continues to accumulate in the air storage chamber, the gas pressure in the air storage chamber gradually increases. When the gas pressure in the air storage chamber is high enough, a large amount of gas will move upward along the vent cover.
[0014] A large amount of gas moving upward through the vent cover will blow up the material covering the surface of the vent cover. This blown-up material will no longer be in contact with the surface of the vent cover, and will flow along with the gas in the connecting pipe, and will eventually be sent to the dust collector for collection.
[0015] Therefore, by setting up a dust removal and flow aid device for the connecting pipe between the air classifier and the dust collector, the accumulated dust at the bottom of the connecting pipe can be blown up and sent into the airflow inside the connecting pipe, thus realizing the online cleaning function of the accumulated dust at the bottom of the connecting pipe and avoiding the situation of dust accumulation at the bottom of the connecting pipe.
[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0018] Figure 1 This is a diagram showing the working status of a dust removal and flow aid device for a connecting pipe between an air classifier and a dust collector.
[0019] Figure 2 This is a diagram showing the working status of a dust removal and flow aid device for a connecting pipe between an air classifier and a dust collector.
[0020] Figure 3 This is a cross-sectional view of an open inclined groove.
[0021] Explanation of reference numerals in the attached figures
[0022] 1. Open inclined slot 2. Intake pipe
[0023] 11 air storage chambers 3 compressed air pipes
[0024] 41 Canvas 42 Canvas fasteners
[0025] 10 Connecting pipes Detailed Implementation
[0026] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0027] In this utility model, unless otherwise stated, directional words such as "upper end" and "upward" included in the terminology only represent the orientation of the term in its normal use state, or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.
[0028] See Figure 1-3 The aforementioned dust removal and flow aid device for the connecting pipe of a classifier and a dust collector includes an open inclined trough 1 at the bottom of the connecting pipe 10 and an air inlet pipe 2 fixedly connected to the bottom of the open inclined trough 1. An air storage chamber 11 is provided inside the open inclined trough 1. One end of the air inlet pipe 2 is connected to the air storage chamber 11, and the other end is connected to the compressed air pipe 3.
[0029] A vent cover is fixedly installed at the upper opening of the air storage chamber 11. Compressed air is introduced into the air storage chamber 11 through the air inlet pipe 2, and the air in the air storage chamber 11 moves upward through the vent cover.
[0030] Through the implementation of the above technical solution, the open inclined trough 1 is set at the bottom of the connecting pipe 10, and the accumulated dust in the connecting pipe 10 will fall onto the vent cover of the open inclined trough 1. The air inlet pipe 2 sends the compressed air in the compressed air pipe 3 into the open inclined trough 1. The vent cover will generate resistance to the upward movement of the compressed air in the air storage chamber 11, so that the compressed air is stored in the air storage chamber 11. As the compressed air continues to accumulate in the air storage chamber 11, the gas pressure in the air storage chamber 11 gradually increases. When the gas pressure in the air storage chamber 11 is large enough, a large amount of this gas will move upward along the vent cover.
[0031] A large amount of gas moving upward through the vent cover will blow up the material covering the surface of the vent cover. This blown-up material will no longer be in contact with the surface of the vent cover, and will flow along with the gas in the connecting pipe 10, and will eventually be sent to the dust collector for collection.
[0032] Therefore, by setting up the dust removal and flow aid device for the connecting pipe between the classifier and the dust collector, the accumulated dust at the bottom of the connecting pipe 10 can be blown up and sent into the airflow inside the connecting pipe, thus realizing the online cleaning function of the accumulated dust at the bottom of the connecting pipe 10 and avoiding the need to stop the machine to clean the connecting pipe 10.
[0033] In one embodiment, an open inclined trough 1 is pre-set in the connecting pipe 10. Multiple air inlet pipes 2 are connected to the bottom of the open inclined trough 1. The multiple air inlet pipes 2 are evenly distributed along the bottom of the open inclined trough 1. The multiple air inlet pipes 2 simultaneously input compressed air into the air storage chamber 11 from various positions at the bottom of the open inclined trough 1. This compressed air can quickly fill the air storage chamber 11, thereby improving the working efficiency of the dust removal and flow aid device of the connecting pipe between the classifier and the dust collector. When the air pressure in the air storage chamber 11 is high enough, it can blow up the material above the vent cover, causing the material to separate from the vent cover, thereby facilitating the airflow in the connecting pipe 10 to carry away these materials.
[0034] In this embodiment, preferably, multiple open inclined grooves 1 are provided, and the multiple open inclined grooves 1 are evenly distributed along the bottom surface of the connecting pipe 10.
[0035] If the existing connecting pipe 10 is modified, multiple open inclined grooves 1 can be evenly distributed along the bottom surface of the connecting pipe 10, and the multiple open inclined grooves 1 can be fixedly connected to the bottom surface of the connecting pipe 10. This can achieve full coverage of the bottom surface of the connecting pipe 10. By adjusting the spacing between two adjacent open inclined grooves 1, reliable coverage of the bottom of the connecting pipe 10 can be achieved.
[0036] Preferably, by providing an open inclined groove 1 at the bottom of the connecting pipe 10, the cross-section through which the gas passes at the bottom of the connecting pipe 10 is reduced, thus increasing the gas flow velocity between two adjacent open inclined grooves 1, thereby reducing the possibility of dust falling between two adjacent open inclined grooves 1.
[0037] By adjusting the spacing between two adjacent open inclined slots 1, and the spacing between the open inclined slot 1 and the inner wall of the connecting pipe 10, the airflow velocity at these gap locations can be effectively adjusted, thus preventing dust accumulation at these locations.
[0038] Preferably, each open inclined trough 1 is connected to an air inlet pipe 2. The compressed air introduced through the air inlet pipe 2 can quickly accumulate in the air storage chamber 11 and overcome the resistance of the vent cover, moving upward to achieve the effect of blowing and floating the material.
[0039] In this embodiment, preferably, the surface of the vent cover is densely covered with multiple small vent holes, and the vent cover provides resistance to the gas in the gas storage chamber 11.
[0040] Preferably, the vent cover is made of canvas with densely packed small holes on its surface to allow gas to pass through the air storage chamber 11. Simultaneously, the dense structure of the canvas provides sufficient resistance to the gas within the air storage chamber 11, enabling compressed air to be effectively stored within it until the gas pressure reaches a certain level, at which point it can flow out through the canvas. This ensures that the gas passing through the canvas reliably buoys any air bubbles on it.
[0041] In one embodiment, the canvas is fixed to the open inclined groove 1 by a canvas fastener 42. The canvas fastener 42 includes a first fastener and a fastening bolt. The open inclined groove 1 is provided with a second fastener along its circumference that cooperates with the first fastener. Both the first and second fasteners are provided with fastening holes that cooperate with the fastening bolt. The canvas covers the upper surface of the open inclined groove 1. The first fastener presses the canvas and aligns with the second fastener. The fastening bolt passes through the first fastener, the canvas, and the second fastener in one go. By tightening the nut of the fastening bolt, the canvas can achieve a sealing effect on the open inclined groove 1.
[0042] In this embodiment, preferably, the gas consumption per unit area of the vent cover inside the gas storage chamber 11 is 1.0 to 1.5 m³. 3 / min.㎡.
[0043] As the gas pressure in the gas storage chamber 11 gradually increases, the amount of gas moving upward through the canvas also gradually increases. When enough gas flows out per unit area on the canvas surface per unit time, the accumulated dust can be blown away.
[0044] By detecting the gas consumption within the gas storage chamber 11, it can be determined whether the amount of gas moving upwards through the canvas meets the requirements. Preferably, the air inlet pipe 2 is equipped with a flow valve to detect the gas consumption within the gas storage chamber 11 per unit time.
[0045] Preferably, the gas consumption per unit area of the vent cover inside the gas storage chamber 11 is 1.0–1.5 m³. 3 When the flow rate is / min.㎡, it is possible to clean the accumulated dust inside the connecting pipe 10.
[0046] In this embodiment, preferably, the height of the gas storage chamber 11 is set to 8-12 mm.
[0047] The volume of the air storage chamber 11 can be set by adjusting its height. By setting a sufficiently large air storage chamber 11 to buffer the compressed air, the gas pressure on the canvas surface can be kept stable, thereby achieving a stable dust removal effect.
[0048] The air storage chamber 11 needs to have a certain height so that the compressed air can be evenly distributed in the air storage chamber 11, thereby making the gas pressure on the canvas surface uniform and achieving uniform cleaning of the dust accumulated at the bottom of the connecting pipe 10.
[0049] In this embodiment, preferably, the compressed air pipe 3 is equipped with a valve.
[0050] If the dust removal and flow assist device in the connecting pipe between the air classifier and the dust collector operates continuously, air will continuously enter the connecting pipe 10, which will increase the workload of the dust collector. Moreover, dust accumulation will not occur continuously; noticeable dust accumulation will generally only appear after a period of time. Therefore, the dust removal and flow assist device in the connecting pipe between the air classifier and the dust collector can be set to operate intermittently.
[0051] A valve is installed in the compressed air pipe 3 to enable the dust removal and flow aid device of the connection pipe between the air classifier and the dust collector to work intermittently.
[0052] In this embodiment, preferably, pressure sensors are provided at both ends of the connecting pipe 10, and the pressure sensors are electrically connected to the valve.
[0053] Two pressure sensors can measure the pressure difference between the two ends of the connecting pipe 10. When the pressure difference reaches a certain value, it indicates that a certain amount of dust has accumulated in the connecting pipe 10. At this time, the valve can be opened to send air into the air storage chamber 11 and start blowing the dust.
[0054] Meanwhile, the pressure sensor continues to monitor the pressure difference between the two ends of the connecting pipe 10 in real time. After the blowing continues for a period of time, the accumulated dust is cleaned up, the resistance in the connecting pipe 10 decreases, and the pressure difference between the two ends of the connecting pipe 10 decreases. When the pressure difference decreases to the set value, the valve can be closed to stop sending air into the air storage chamber 11.
[0055] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.
[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.
[0057] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.
Claims
1. A dust removal and flow aid device for the connecting pipe of an air classifier and a dust collector, characterized in that, It includes an open inclined groove (1) set at the bottom of the connecting pipe (10) and an air inlet pipe (2) fixedly connected to the bottom of the open inclined groove (1). An air storage chamber (11) is provided in the open inclined groove (1). One end of the air inlet pipe (2) is connected to the air storage chamber (11), and the other end is connected to the compressed air pipe (3). A vent cover is fixedly installed at the upper opening of the air storage chamber (11). Compressed air is introduced into the air storage tank through the air inlet pipe (2), and the air in the air storage chamber (11) moves upward through the vent cover.
2. The dust removal and flow aid device for the connecting pipe between the air classifier and the dust collector according to claim 1, characterized in that, Multiple open inclined grooves (1) are provided, and multiple open inclined grooves (1) are evenly distributed along the bottom surface of the connecting pipe (10).
3. The dust removal and flow aid device for the connecting pipe between the air classifier and the dust collector according to claim 1, characterized in that, The surface of the vent cover is covered with multiple small vent holes, and the vent cover provides resistance to the gas in the gas storage chamber (11).
4. The dust removal and flow aid device for the connecting pipe between the air classifier and the dust collector according to claim 3, characterized in that, The gas consumption per unit area of the vent cover inside the gas storage chamber (11) is 1.0~1.5m³. 3 / min.㎡.
5. The dust removal and flow aid device for the connecting pipe between the air classifier and the dust collector according to claim 4, characterized in that, The height of the gas storage chamber (11) is set to 8-12mm.
6. The dust removal and flow aid device for the connecting pipe between the air classifier and the dust collector according to claim 1, characterized in that, The compressed air pipe (3) is equipped with a valve.
7. The dust removal and flow aid device for the connecting pipe between the air classifier and the dust collector according to claim 6, characterized in that, Pressure sensors are installed at both ends of the connecting pipe (10), and the pressure sensors are electrically connected to the valve.