A high-efficiency dust collecting and purifying device in regenerated sandstone production

Abstract

This utility model discloses a high-efficiency dust collection and purification device for recycled sand and gravel production, including a centrifugal fan, a cyclone dust collector, and an exhaust pipe, as well as a dust collection box and a dust collection cloth cylinder. A bag support frame is installed in the dust collection box, and a pressing frame is vertically mounted above the bag support frame inside the dust collection box. The dust collection cloth cylinder is placed in the dust collection box through the bag support frame and is pressed and fixed by the pressing frame. The air inlet of the centrifugal fan is connected to a suction hose, and the air outlet is connected to the inlet of the cyclone dust collector. The air outlet of the cyclone dust collector extends through the exhaust pipe into the dust settling water tank, and the dust collection port of the cyclone dust collector extends into the dust collection box and is located at the opening of the dust collection cloth cylinder. This utility model, by setting the dust collection cloth cylinder at the dust collection port of the cyclone dust collector, can collect dust. After collection, the dust collection cloth cylinder can be directly tied and transferred. By clamping the dust collection cloth cylinder in the dust collection box, dust diffusion can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of dust purification technology, specifically to a high-efficiency dust collection and purification device in the production of recycled sand and gravel. Background Technology

[0002] In the sand and gravel processing industry, crushing, screening, and conveying processes generate a large amount of dust. This dust not only severely pollutes the air and deteriorates the surrounding ecological environment, but also affects the quality of sand and gravel products, causing them to fail to meet standards for indicators such as mud content. Simultaneously, dust entering the equipment accelerates wear and tear, shortens its service life, and increases maintenance costs. Furthermore, high concentrations of dust in the workshop threaten worker health, easily leading to occupational diseases such as pneumoconiosis, and even posing safety hazards such as dust explosions. Therefore, dust collection devices are indispensable equipment in sand and gravel processing.

[0003] In the prior art, utility model patent CN202322974505.5 discloses a dust removal device for sand and gravel processing, comprising: a shell; an air inlet pipe fixedly connected to the shell; an air guiding component disposed inside the shell; and a purification mechanism disposed inside the shell. The purification mechanism includes: a filter frame disposed between the air inlet pipe and the air guiding component, and detachably connected to the shell; a spray component disposed outside the filter frame; a dust removal component connected to the spray component; and a cleaning component disposed between the dust removal component and the spray component. This dust removal device for sand and gravel processing not only purifies dust but also prevents dust leakage during cleaning, thereby reducing the dust content in the working environment of sand and gravel processing workers and minimizing the adverse health effects of dust.

[0004] The aforementioned patent provides a device for purifying dust. This device can absorb dust and then spray it by setting up a dust removal component and a spray component, thereby achieving a dust reduction effect. However, when the device sprays dust, the dust will mix with water mist, which can easily cause the dust to become damp and condense, making it inconvenient to remove from the equipment and also not conducive to recycling. Further improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to provide a high-efficiency dust collection and purification device in the production of recycled sand and gravel, which aims to improve the problem that when existing dust purification devices spray dust, the dust will mix with water mist, which will easily cause the dust to become damp and condense, making it inconvenient to remove from the equipment and also hindering recycling.

[0006] This utility model is implemented as follows: A high-efficiency dust collection and purification device for recycled sand and gravel production includes a centrifugal fan, a cyclone dust collector, and an exhaust pipe, as well as a dust collection box and a dust collection cloth cylinder; the dust collection box is provided with a bag support frame, and a pressing frame is installed inside the dust collection box above the bag support frame; the dust collection cloth cylinder is set in the dust collection box through the bag support frame and is pressed and fixed by the pressing frame; the air inlet of the centrifugal fan is connected to a suction hose, and the air outlet is connected to the inlet of the cyclone dust collector; the air outlet of the cyclone dust collector extends through the exhaust pipe and is set inside the dust settling water tank, and the dust collection port of the cyclone dust collector extends into the dust collection box and is located at the opening of the dust collection cloth cylinder.

[0007] Preferably, the vacuum hose further includes an air vent protective cover, with an air vent protective cover provided at the end of the vacuum hose away from the centrifugal fan, and a filter screen provided on the air vent protective cover.

[0008] Preferably, the centrifugal fan includes connecting bolts, and a plurality of connecting bolts are sequentially arranged along the circumference of the air inlet of the centrifugal fan. The upper end of the vacuum hose has a bolt hole corresponding to the position of each connecting bolt, and the connecting bolt is installed in the bolt hole. The lower end of the vacuum hose is provided with a threaded head, and the air outlet protective cover is provided with an internal thread that matches the threaded head. The air outlet protective cover is threaded onto the threaded head through the internal thread.

[0009] Preferably, it also includes a connecting flange, wherein the centrifugal fan and the cyclone dust collector are connected by a connecting flange, and the cyclone dust collector and the exhaust pipe are connected by a connecting flange.

[0010] Preferably, the bag support frame includes a sleeve, the bag support frame is slidably installed inside the dust collection box, the upper end face is supported by the sleeve, the opening of the dust collection cloth cylinder is wound around the sleeve, and the pressing frame is abutted against the upper end face of the sleeve.

[0011] Preferably, the pressing frame further includes an electric lifting rod, and the pressing frame is raised and lowered above the sleeve edge via the electric lifting rod.

[0012] Preferably, the dust collection box further includes a door and a slide groove. The dust collection box is provided with a door, and the inner wall of the dust collection box is provided with a slide groove. The side of the bag support frame is provided with a limiting slide that is adapted to the slide groove, and the limiting slide is slidably disposed in the slide groove.

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

[0014] 1. This utility model not only collects dust by setting a dust collection cloth tube at the dust collection port of the cyclone dust collector, but also allows the dust collection cloth tube to be directly tied up and transferred after collection. Furthermore, by clamping the dust collection cloth tube in the dust collection box, the collected dust can be prevented from spreading out.

[0015] 2. By incorporating a suction hose, this utility model allows for easy adjustment of the suction hose's position based on the location of dust generation, thus facilitating accurate dust collection. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the vacuum cleaner hose of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the air vent protective cover of this utility model;

[0019] Figure 4 This is a schematic diagram of the dust collection box of this utility model;

[0020] Figure 5 This is a structural schematic diagram of the cloth bag support frame of this utility model.

[0021] In the diagram: 1. Centrifugal fan; 101. Connecting bolt; 2. Dust suction hose; 201. Air outlet protective cover; 202. Bolt hole; 203. Threaded head; 204. Internal threaded opening; 205. Filter screen; 3. Cyclone dust collector; 4. Exhaust pipe; 5. Dust settling water tank; 6. Dust collection box; 601. Pressing frame; 602. Electric lifting rod; 603. Slide rail; 604. Box door; 7. Bag support frame; 701. Edge sleeve; 702. Limiting slide; 8. Dust collection cloth cylinder; 9. Connecting flange. Detailed Implementation

[0022] 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.

[0023] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0024] Example 1

[0025] like Figure 1 , Figure 4 and Figure 5 As shown, a high-efficiency dust collection and purification device for recycled sand and gravel production includes a centrifugal fan 1, a cyclone dust collector 3, and an exhaust pipe 4. The centrifugal fan 1 is a model 4-72 centrifugal fan. When the centrifugal fan 1 is running, the motor drives the impeller to rotate at high speed, and the gas between the blades moves in a circular motion. Under the action of centrifugal force, the gas is thrown towards the outer edge of the impeller, gaining kinetic and pressure energy. This causes the airflow at the edge of the blades to be thrown out, creating a negative pressure space at the center of the impeller, thus generating suction. At the same time, a low-pressure zone is formed at the center of the impeller due to gas discharge. Under the action of atmospheric pressure, external gas continuously flows in to replenish the zone. The gas leaving the impeller enters the volute, where the volute converts some of the kinetic energy into pressure energy. After further pressurization, the gas is smoothly transported to the target location, achieving continuous gas transport and pressurization. The cyclone dust collector 3 uses the XZZ model. During operation, dust-laden gas enters the cyclone dust collector 3 and rotates. Dust particles are thrown against the cylinder wall by centrifugal force and fall down the wall to the dust collection port for discharge, thus achieving the function of dust removal. It also includes a dust collection box 6 and a dust collection cloth cylinder 8. The dust collection box 6 is equipped with a bag support frame 7, and a pressing frame 601 is vertically mounted inside the dust collection box 6, positioned above the bag support frame 7. The dust collection cloth cylinder 8 is positioned in the dust collection box 6 via the bag support frame 7 and is pressed and fixed by the pressing frame 601. The bag support frame 7 includes a sleeve 701, which is slidably installed inside the dust collection box 6. The upper end face is supported by the sleeve 701, and the opening of the dust collection cloth cylinder 8 is wound around the sleeve 701. The pressing frame 601 abuts against the upper end face of the sleeve 701. The clamping frame 601 also includes an electric lifting rod 602, which is raised and lowered above the sleeve 701 via the electric lifting rod 602. The dust collection box 6 also includes a door 604 and a slide 603. The dust collection box 6 is provided with a door 604, and the inner wall of the dust collection box 6 is provided with a slide 603. The side of the bag support frame 7 is provided with a limiting slide 702 that is adapted to the slide 603, and the limiting slide 702 is slidably disposed in the slide 603. By providing the bag support frame 7 in the dust collection box 6, the opening of the dust collection cloth cylinder 8 used for collecting dust can be fitted onto the sleeve 701, so that the dust collection cloth cylinder 8 can stand upright in the dust collection box 6. Then, the clamping frame 601 presses down on the dust collection cloth cylinder 8, thereby preventing the dust collection cloth cylinder 8 from falling off.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the inlet of the centrifugal fan 1 is connected to the suction hose 2, and the outlet is connected to the inlet of the cyclone dust collector 3. The suction hose 2 also includes an outlet protective cover 201, which is installed at the end of the suction hose 2 away from the centrifugal fan 1. A filter screen 205 is installed on the outlet protective cover 201. When the centrifugal fan 1 is working, dust can be sucked away through the suction hose 2. The suction hose 2 is a spring hose, allowing operators to move the suction port of the suction hose 2 to the location where dust is generated, thus enabling accurate dust collection. The centrifugal fan 1 includes connecting bolts 101. Multiple connecting bolts 101 are sequentially arranged along the circumference of the air inlet of the centrifugal fan 1. The upper end of the suction hose 2 has corresponding bolt holes 202 at the positions of each connecting bolt 101, and the connecting bolts 101 are installed in the bolt holes 202. The lower end of the suction hose 2 has a threaded head 203, and the air outlet protective cover 201 has an internal thread 204 that matches the threaded head 203. The air outlet protective cover 201 is threaded onto the threaded head 203 through the internal thread 204. The threaded connection of the air outlet protective cover 201 allows for easy alignment, replacement, or disassembly and cleaning by personnel. The air outlet of the cyclone dust collector 3 extends through the exhaust pipe 4 and is located inside the dust settling water tank 5. The airflow discharged from the exhaust pipe 4 will contain residual dust, which can be directly introduced into the water, where the water absorbs the dust from the airflow. The dust collection port of the cyclone dust collector 3 extends into the dust collection box 6 and is located at the opening of the dust collection cloth cylinder 8. It also includes a connecting flange 9, which connects the centrifugal fan 1 and the cyclone dust collector 3, and connects the cyclone dust collector 3 and the exhaust pipe 4.

[0027] Example 2

[0028] like Figure 1 , Figure 4 and Figure 5As shown, a high-efficiency dust collection and purification device for recycled sand and gravel production includes a centrifugal fan 1, a cyclone dust collector 3, and an exhaust pipe 4. It also includes a dust collection box 6 and a dust collection cloth cylinder 8. A bag support frame 7 is installed in the dust collection box 6, and a pressing frame 601 is vertically mounted above the bag support frame 7 inside the dust collection box 6. The dust collection cloth cylinder 8 is mounted in the dust collection box 6 via the bag support frame 7 and is pressed and fixed by the pressing frame 601. The bag support frame 7 includes a sleeve 701, which is slidably installed inside the dust collection box 6. The upper end face of the sleeve 701 is supported by the sleeve 701, and the opening of the dust collection cloth cylinder 8 is wound around the sleeve 701. The pressing frame 601 abuts against the upper end face of the sleeve 701. The pressing frame 601 also includes an electric lifting rod 602, which lifts and lowers the pressing frame 601 above the sleeve 701. The dust collection box 6 also includes a door 604 and a slide 603. The dust collection box 6 is provided with a door 604, and the inner wall of the dust collection box 6 is provided with a slide 603. The side of the bag support frame 7 is provided with a limiting slide 702 that is adapted to the slide 603. The limiting slide 702 is slidably disposed in the slide 603.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the inlet of the centrifugal fan 1 is connected to the suction hose 2, and the outlet is connected to the inlet of the cyclone dust collector 3. The suction hose 2 also includes an outlet protective cover 201. The end of the suction hose 2 away from the centrifugal fan 1 is provided with the outlet protective cover 201, and a filter screen 205 is provided on the outlet protective cover 201. The centrifugal fan 1 includes connecting bolts 101. Multiple connecting bolts 101 are arranged sequentially along the circumference of the inlet of the centrifugal fan 1. The upper end of the suction hose 2 is provided with a bolt hole 202 corresponding to the position of each connecting bolt 101, and the connecting bolts 101 are installed in the bolt holes 202. The lower end of the suction hose 2 is provided with a threaded head 203. The outlet protective cover 201 is provided with an internal thread 204 that is adapted to the threaded head 203. The outlet protective cover 201 is threaded onto the threaded head 203 through the internal thread 204. The outlet of the cyclone dust collector 3 extends through the exhaust pipe 4 and is located inside the dust settling water tank 5. The dust collection port of the cyclone dust collector 3 extends through the dust collection box 6 and is located at the opening of the dust collection cloth cylinder 8. Additionally, a connecting flange 9 is included; the centrifugal fan 1 and the cyclone dust collector 3 are connected via the connecting flange 9, and the cyclone dust collector 3 and the exhaust pipe 4 are connected via the connecting flange 9.

[0030] The working principle of this utility model is as follows: During use, the centrifugal fan 1 absorbs dust through the suction hose 2, and the dust in the airflow is separated by the cyclone dust collector 3 and collected in the dust collection cloth 8 in the dust collection box 6. The airflow with separated dust is transported to the dust settling water tank 5, and the airflow is circulated into the water, where the water can adsorb the residual dust to achieve the purpose of secondary purification. After the dust collection work is completed, the dust collection cloth 8 in the dust collection box 6 can be removed manually and replaced with a new dust collection cloth 8 to continue the dust settling work.

[0031] In summary, this utility model, by setting a dust collection cloth tube 8 at the dust collection port of the cyclone dust collector 3, can not only collect dust, but also directly tie the dust collection cloth tube 8 and transfer it after collection. At the same time, by clamping the dust collection cloth tube 8 in the dust collection box 6, it can also prevent the collected dust from spreading out. By setting a suction hose 2, the suction position of the suction hose 2 can be adjusted at will according to the location of dust generation, thereby facilitating and accurately carrying out dust collection work.

[0032] 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 high-efficiency dust collection and purification device for recycled sand and gravel production, comprising a centrifugal fan (1), a cyclone dust collector (3), and an exhaust pipe (4), characterized in that, It also includes a dust collection box (6) and a dust collection cloth cylinder (8); a bag support frame (7) is provided in the dust collection box (6), and a pressing frame (601) located above the bag support frame (7) is provided inside the dust collection box (6). The dust collection cloth cylinder (8) is set in the dust collection box (6) through the bag support frame (7) and is pressed and fixed by the pressing frame (601); the air inlet of the centrifugal fan (1) is connected to the dust suction hose (2), and the air outlet is connected to the inlet of the cyclone dust collector (3); the air outlet of the cyclone dust collector (3) extends through the exhaust pipe (4) and is set inside the dust settling water tank (5). The dust removal port of the cyclone dust collector (3) extends into the dust collection box (6) and is set at the cylinder opening position of the dust collection cloth cylinder (8).

2. The efficient dust collection and purification device for recycled sand and gravel production according to claim 1, characterized in that, The vacuum hose (2) also includes an air vent cover (201). An air vent cover (201) is provided at the end of the vacuum hose (2) away from the centrifugal fan (1). A filter screen (205) is provided on the air vent cover (201).

3. The high-efficiency dust collection and purification device for recycled sand and gravel production according to claim 2, characterized in that, The centrifugal fan (1) includes connecting bolts (101). Multiple connecting bolts (101) are arranged sequentially along the circumference of the air inlet of the centrifugal fan (1). The upper port of the vacuum hose (2) is provided with a bolt hole (202) corresponding to the position of each connecting bolt (101). The connecting bolts (101) are installed in the bolt holes (202). The lower port of the vacuum hose (2) is provided with a threaded head (203). The air outlet protective cover (201) is provided with an internal thread (204) that is compatible with the threaded head (203). The air outlet protective cover (201) is threadedly installed on the threaded head (203) through the internal thread (204).

4. The high-efficiency dust collection and purification device for recycled sand and gravel production according to claim 1, characterized in that, It also includes a connecting flange (9), the centrifugal fan (1) and the cyclone dust collector (3) are connected by the connecting flange (9), and the cyclone dust collector (3) and the exhaust pipe (4) are connected by the connecting flange (9).

5. The high-efficiency dust collection and purification device for recycled sand and gravel production according to claim 1, characterized in that, The bag support frame (7) includes a sleeve (701). The bag support frame (7) is slidably installed inside the dust collection box (6). The upper end face is supported by the sleeve (701). The opening of the dust collection cloth cylinder (8) is wound around the sleeve (701). The pressing frame (601) is abutted against the upper end face of the sleeve (701).

6. The high-efficiency dust collection and purification device for recycled sand and gravel production according to claim 5, characterized in that, The pressing frame (601) also includes an electric lifting rod (602), which is used to lift and lower the pressing frame (601) above the sleeve (701).

7. The high-efficiency dust collection and purification device for recycled sand and gravel production according to claim 5, characterized in that, The dust collection box (6) is provided with a door (604), and the inner wall of the dust collection box (6) is provided with a sliding groove (603). The side of the bag support frame (7) is provided with a limiting slide (702) that is compatible with the sliding groove (603). The limiting slide (702) is slidably disposed in the sliding groove (603).

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