Dust falling device for lime production line

Abstract

The utility model discloses a dust falling device for lime production line, including cyclone dust collector still includes intermediate dust collecting box, be provided with one air outlet connecting pipe and a plurality of air inlet connecting pipes on intermediate dust collecting box, and the air outlet connecting pipe is connected the import of cyclone dust collector, and a plurality of air inlet connecting pipes all are provided with front end dust absorption pump, and the front end dust absorption pump is connected with front end dust absorption arrangement pipe, the utility model discloses through adding one intermediate dust collecting box in the front end of cyclone dust collector, and setting up a plurality of front end dust absorption pump and front end dust absorption arrangement pipe on intermediate dust collecting box, and will front end dust absorption arrangement pipe respectively arrange on each working procedure of lime production line, thereby can through one cyclone dust collector to the dust of a plurality of dust absorption equipment suction carries out the centralized processing through cyclone dust collector, effectively reduced the equipment investment cost and maintenance cost, through setting up the protective cover at front end dust absorption arrangement pipe, can effectively prevent the big granule impurity from entering front end dust absorption arrangement pipe, avoids the pipeline blockage.

Description

Technical Field

[0001] This utility model relates to the technical field of dust suppression devices, specifically a dust suppression device for a lime production line. Background Technology

[0002] The lime production line mainly includes raw material crushing, screening, calcination, cooling, and finished product storage. Dust suppression is required at various stages, including raw material crushing, screening, conveyor belt transport, calcination feed, and ash discharge. During crushing and screening, the collision and friction between materials generate a large amount of dust; the airflow generated by the falling material on the conveyor belt carries dust; and the feed and ash discharge points in the calcination stage also release dust-laden gases due to high temperatures and material flow. Therefore, dust suppression devices are necessary throughout the entire lime production process.

[0003] Utility model patent application number CN202322182434.5 discloses a dust suppression device for limestone powder production, including a placement box. The top of the placement box is connected to a feed pipe, and a first through-slot is opened on the right side of the placement box. This utility model uses a fan to allow dust from the first connecting pipe to enter the U-shaped pipe, and a fan to allow dust from the second connecting pipe to enter the U-shaped pipe. The dust from the U-shaped pipe then enters the fan, which transports the dust to the inside of a collection box. When limestone powder enters the placement box, it falls onto the top of a screen. When the user starts the motor, it drives a cam to rotate, causing the cam to contact the left side of the bottom of the screen. Because the cam is rectangular, it causes a circular block on the right side of the screen to rotate around its center, thus screening the limestone powder on the top of the screen. Larger particles enter the square trough, achieving the advantage of screening and classifying limestone powder.

[0004] The aforementioned patent discloses a dust suppression device used in lime production, which can also be applied to lime production lines. However, this dust suppression device can only be arranged individually in each lime production line process for dust suppression, resulting in the need for a separate dust suppression device in each process. This not only increases the investment in dust suppression equipment but also requires more maintenance personnel, leading to a significant increase in costs, which needs further improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a dust suppression device for lime production lines, which aims to improve the problem of high equipment investment costs and increased maintenance costs caused by the need for separate arrangement of existing dust suppression devices in each process of lime production.

[0006] This utility model is implemented as follows:

[0007] A dust suppression device for a lime production line includes a cyclone dust collector and an intermediate dust collection box. The intermediate dust collection box is provided with an air outlet connection pipe and multiple air inlet connection pipes. The air outlet connection pipe is connected to the inlet of the cyclone dust collector. Each of the multiple air inlet connection pipes is provided with a front-end dust suction pump, and the front-end dust suction pump is connected to a front-end dust suction distribution pipe.

[0008] Furthermore, the cyclone dust collector includes a rear-end dust pump, an exhaust pipe, and a dust collection port; the inlet of the cyclone dust collector is equipped with a rear-end dust pump, and the lower end is equipped with a dust collection port for discharging dust; the cyclone dust collector is equipped with an exhaust pipe, and the exhaust connection pipe is connected to the air inlet of the rear-end dust pump.

[0009] Furthermore, the total exhaust volume of the multiple front-end vacuum pumps is slightly greater than the intake volume of the rear-end vacuum pump.

[0010] Furthermore, the intermediate dust collection box also includes a switch gate valve, and multiple air inlet connecting pipes are equipped with switch gate valves.

[0011] Furthermore, the front-end vacuum pump includes a vacuum connection pipe, and each of the air inlets of the multiple front-end vacuum pumps is provided with a vacuum connection pipe, which is connected to the front-end vacuum arrangement pipe.

[0012] Furthermore, the diameter of the suction connection pipes installed on the multiple front-end suction pumps varies depending on their length, and the longer the suction connection pipe is, the larger its diameter.

[0013] Furthermore, the front-end dust collection pipe includes a protective cover, and the end of the front-end dust collection pipe away from the front-end dust collection pump is provided with a protective cover.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model adds an intermediate dust collection box at the front end of the cyclone dust collector, and sets multiple front-end dust collection pumps and front-end dust collection pipes on the intermediate dust collection box. The front-end dust collection pipes are respectively arranged on each process of the lime production line. Thus, the dust collected by multiple dust collection devices can be collected by one cyclone dust collector and processed by the cyclone dust collector, which effectively reduces the equipment investment cost and maintenance cost.

[0016] 2. This utility model can effectively prevent large particles of impurities from entering the front dust collection pipe by setting a protective cover, thus avoiding pipe blockage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2This is a schematic diagram of the structure of the cyclone dust collector of this utility model;

[0019] Figure 3 This is a schematic diagram of the arrangement structure of the intermediate dust collection box and the front-end dust suction pump of this utility model;

[0020] Figure 4 This is a utility model Figure 3 Schematic diagram of the structure at point A;

[0021] Figure 5 This is a utility model Figure 3 A schematic diagram of the structure at point B.

[0022] In the diagram: 1. Cyclone dust collector; 101. Rear dust pump; 102. Exhaust pipe; 103. Ash discharge port; 2. Intermediate dust collection box; 201. Air outlet connection pipe; 202. Air inlet connection pipe; 203. Switch valve; 3. Front dust pump; 301. Dust suction connection pipe; 4. Front dust suction arrangement pipe; 401. Protective cover. Detailed Implementation

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0025] Example 1

[0026] like Figure 1 , Figure 2 and Figure 4As shown, a dust suppression device for a lime production line includes a cyclone dust collector 1 and an intermediate dust collection box 2. The cyclone dust collector 1 is an axially-entering type, which allows for more uniform airflow distribution and higher processing efficiency compared to tangential entry. The intermediate dust collection box 2 is equipped with an outlet connection pipe 201 and multiple inlet connection pipes 202. The intermediate dust collection box 2 also includes a gate valve 203, and each of the multiple inlet connection pipes 202 is equipped with a gate valve 203. The outlet connection pipe 201 is connected to the inlet of the cyclone dust collector 1. The cyclone dust collector 1 includes a rear-end suction pump 101, an exhaust pipe 102, and a dust collection port 103. The inlet of the cyclone dust collector 1 is equipped with the rear-end suction pump 101, and the lower end is equipped with a dust collection port 103 for discharging dust. The exhaust pipe 102 is provided on the cyclone dust collector 1, and the outlet connection pipe 201 is connected to the inlet of the rear-end suction pump 101. The total exhaust volume of the multiple front-end vacuum pumps 3 is slightly greater than the intake volume of the rear-end vacuum pump 101. The front-end vacuum pumps 3 are variable frequency centrifugal pumps. The total design airflow of each front-end vacuum pump 3 needs to be slightly greater than the total system exhaust volume by 1.05-1.1 times to avoid excessive positive / negative pressure caused by an imbalance between the total supply and exhaust airflow. A pressure sensor and a controller are installed inside the intermediate dust collection box 2. The controller controls the power of each front-end vacuum pump 3 and detects the pressure inside the intermediate dust collection box. The pressure sensor monitors the pressure value inside the intermediate dust collection box 2 in real time and continuously feeds the signal back to the controller. The controller has a preset pressure threshold range, which is determined based on the matching relationship between the total system exhaust volume and the design airflow of the front-end vacuum pumps 3, ensuring that the pressure inside the dust collection box remains within a stable, specific threshold range. This prevents the front-end vacuum pumps 3 or any of the front-end vacuum pumps 3 from failing to exhaust or supply air normally due to abnormal pressure in the intermediate dust collection box.

[0027] like Figure 3 and Figure 5As shown, multiple air inlet connecting pipes 202 are each equipped with a front-end dust suction pump 3, and the front-end dust suction arrangement pipe 4 is connected to the front-end dust suction pump 3. The front-end dust suction arrangement pipe 4 includes a protective cover 401, and the end of the front-end dust suction arrangement pipe 4 away from the front-end dust suction pump 3 is equipped with a protective cover 401. The front-end dust suction pump 3 includes a dust suction connecting pipe 301, and the air inlets of multiple front-end dust suction pumps 3 are each equipped with a dust suction connecting pipe 301, which is connected to the front-end dust suction arrangement pipe 4. The diameter of the dust suction connecting pipe 301 on the multiple front-end dust suction pumps 3 varies according to its layout length; the longer the dust suction connecting pipe 301, the larger its diameter. The front-end dust suction arrangement pipe 4 is designed using the "equal resistance method": the farther the layout distance of the front-end dust suction arrangement pipe 4, the larger the diameter of the front-end dust suction arrangement pipe 4 can be, or the shorter its length can be appropriately increased, in order to reduce the frictional resistance along the pipe. According to the "equal resistance method," the resistance is directly proportional to the length and inversely proportional to the fifth power of the pipe diameter. For example, if the A-pipe in vacuum area A is 10 meters long and the B-pipe in vacuum area B is 20 meters long, the diameter of the B-pipe can be designed to be 1.1-1.2 times that of the A-pipe to offset the resistance difference caused by the increased length. Simultaneously, when determining the diameter of the vacuum connection pipe 301, in addition to considering the installation length, the suction capacity of the front-end vacuum arrangement pipe 4 and the power parameters of the front-end vacuum pump 3 must also be taken into account. If the front-end vacuum pump 3 has a higher power, the diameter of the vacuum connection pipe 301 can be appropriately smaller than the theoretically calculated value for the same length; conversely, if the power is lower, the diameter needs to be appropriately increased to reduce resistance and ensure sufficient airflow. The protective cover 401 needs to effectively prevent large particles from entering the front-end vacuum arrangement pipe 4, avoiding pipe blockage, while not excessively increasing the resistance to airflow. Through multiple experiments, the reasonable aperture and opening ratio of the protective cover 401 were determined to ensure both protective effectiveness and smooth airflow into the pipe, ensuring the stable operation of the entire vacuuming system.

[0028] Example 2

[0029] like Figure 1 , Figure 2 and Figure 4 As shown, a dust suppression device for a lime production line includes a cyclone dust collector 1 and an intermediate dust collection box 2. The intermediate dust collection box 2 is equipped with an outlet connecting pipe 201 and multiple inlet connecting pipes 202. The intermediate dust collection box 2 also includes a gate valve 203, and each of the multiple inlet connecting pipes 202 is equipped with a gate valve 203. The outlet connecting pipe 201 connects to the inlet of the cyclone dust collector 1. The cyclone dust collector 1 includes a rear-end suction pump 101, an exhaust pipe 102, and a dust collection port 103. The inlet of the cyclone dust collector 1 is equipped with the rear-end suction pump 101, and the lower end is equipped with a dust collection port 103 for discharging dust. The exhaust pipe 102 is installed on the cyclone dust collector 1, and the outlet connecting pipe 201 connects to the inlet of the rear-end suction pump 101. The total exhaust volume of the multiple front-end suction pumps 3 is slightly greater than the intake volume of the rear-end suction pump 101.

[0030] like Figure 3 and Figure 5 As shown, multiple air inlet connecting pipes 202 are each equipped with a front-end vacuum pump 3, and a front-end vacuum distribution pipe 4 is connected to each front-end vacuum pump 3. The front-end vacuum distribution pipe 4 includes a protective cover 401, with the protective cover 401 located at the end of the front-end vacuum distribution pipe 4 furthest from the front-end vacuum pump 3. Each front-end vacuum pump 3 includes a vacuum connecting pipe 301, and each air inlet of the multiple front-end vacuum pumps 3 is equipped with a vacuum connecting pipe 301, which connects to the front-end vacuum distribution pipe 4. The diameter of the vacuum connecting pipes 301 on the multiple front-end vacuum pumps 3 varies depending on their length; the longer the vacuum connecting pipe 301, the larger its diameter.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dust suppression device for a lime production line, comprising a cyclone dust collector (1), characterized in that, It also includes an intermediate dust collection box (2); the intermediate dust collection box (2) is provided with an air outlet connection pipe (201) and multiple air inlet connection pipes (202), the air outlet connection pipe (201) is connected to the inlet of the cyclone dust collector (1), and each of the multiple air inlet connection pipes (202) is provided with a front-end dust suction pump (3), and the front-end dust suction pump (3) is connected to a front-end dust suction arrangement pipe (4).

2. The dust suppression device for a lime production line according to claim 1, characterized in that, The cyclone dust collector (1) includes a rear dust pump (101), an exhaust pipe (102), and a dust collection port (103). The inlet of the cyclone dust collector (1) is provided with a rear dust pump (101), and the lower end is provided with a dust collection port (103) for discharging dust. The cyclone dust collector (1) is provided with an exhaust pipe (102), and the air outlet connection pipe (201) is connected to the air inlet of the rear dust pump (101).

3. The dust suppression device for a lime production line according to claim 2, characterized in that, The total exhaust volume of the multiple front-end vacuum pumps (3) is slightly greater than the intake volume of the rear-end vacuum pump (101).

4. A dust suppression device for a lime production line according to claim 1, characterized in that, The intermediate dust collection box (2) also includes a switch gate valve (203), and a switch gate valve (203) is provided on each of the multiple air inlet connecting pipes (202).

5. A dust suppression device for a lime production line according to claim 1, characterized in that, The front-end vacuum pump (3) includes a vacuum connection pipe (301), and the air inlets of the multiple front-end vacuum pumps (3) are all provided with vacuum connection pipes (301), and the vacuum connection pipes (301) are connected to the front-end vacuum arrangement pipe (4).

6. A dust suppression device for a lime production line according to claim 5, characterized in that, The diameter of the suction connection pipe (301) provided on the multiple front-end suction pumps (3) varies depending on its length. The longer the length of the suction connection pipe (301), the larger its diameter.

7. A dust suppression device for a lime production line according to claim 1, characterized in that, The front-end dust collection pipe (4) includes a protective cover (401), and the end of the front-end dust collection pipe (4) away from the front-end dust collection pump (3) is provided with a protective cover (401).

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