Concrete production dust removal device

Abstract

The application relates to a concrete production dust removal device and relates to the technical field of engineering construction, which comprises a bag-type dust collector, one side of the bag-type dust collector is fixedly connected with a cyclone separator, four telescopic pipes arranged in a linear array are fixedly connected to the outer wall of the shunt pipe, dust collection covers are fixedly connected to the ends, away from the shunt pipe, of the four telescopic pipes, and an electric dust collector is fixedly connected to the end, away from the cyclone separator, of the bag-type dust collector. The application has the effects that the bag-type dust collector, the cyclone separator and the electric dust collector are arranged, dust in dust-containing gas is preliminarily separated through centrifugal effect when entering the cyclone separator, dust-containing gas after preliminary separation is conveyed into the bag-type dust collector through a centrifugal fan, the dust-containing gas is filtered again through the bag-type dust collector, and finally, fine dust in air is captured through the electric dust collector.

Description

Technical Field

[0001] This application relates to the technical field of engineering construction, and in particular to a dust removal device for concrete production. Background Technology

[0002] During the concrete production process, a large amount of dust is generated at every stage, from loading and unloading raw materials to transportation and mixing. This dust not only seriously pollutes the production environment and endangers the health of operators, but also may lead to occupational diseases such as pneumoconiosis if inhaled for a long time. It also has an adverse impact on the surrounding atmospheric environment and does not meet environmental protection requirements.

[0003] However, most existing concrete production processes use baghouse dust collectors. Although baghouse dust collectors can collect some dust to a certain extent, their filtration efficiency is low. Due to the material of the bags, it is difficult to collect some dust particles with smaller diameters. Utility Model Content

[0004] The purpose of this application is to provide a dust removal device for concrete production, which has the advantages of improving dust filtration effect. It solves the problem that most existing concrete production processes use bag dust collectors, which, although collecting some dust to a certain extent, have low filtration efficiency. Due to the material of the bag, it is difficult to collect some dust particles with small diameters.

[0005] The dust removal device for concrete production provided in this application adopts the following technical solution: it includes a bag filter dust collector, a cyclone separator is fixedly connected to one side of the bag filter dust collector, an air inlet pipe is fixedly connected to the upper end of the outer wall of the cyclone separator, a diversion pipe is fixedly connected to the end of the air inlet pipe away from the cyclone separator, four telescopic pipes arranged in a linear array are fixedly connected to the outer wall of the diversion pipe, a dust collection hood is fixedly connected to the end of the four telescopic pipes away from the diversion pipe, a centrifugal fan is fixedly connected to the outlet end of the cyclone separator, an electrostatic precipitator is fixedly connected to the end of the bag filter dust collector away from the cyclone separator, a connecting pipe is fixedly connected to one side of the electrostatic precipitator, an exhaust seat is fixedly connected to the end of the electrostatic precipitator away from the connecting pipe, an axial flow fan is fixedly connected to the upper end of the exhaust seat, an exhaust chimney is fixedly connected to the upper end of the axial flow fan, and a first discharge valve is fixedly connected to the bottom end of the electrostatic precipitator.

[0006] By adopting the above technical solution, and through the setup of a bag filter, cyclone separator, and electrostatic precipitator, when dust-laden gas enters the device, it first enters the cyclone separator. The centrifugal effect initially separates the dust within the gas. As the dust-laden gas flows through the inlet pipe into the cyclone separator, it rotates at high speed along the inner wall. The resulting centrifugal force throws denser dust particles towards the inner wall, where they slide down to the bottom. The separated clean airflow exits from the outlet of the cyclone separator. The pre-separated dust-laden gas is then transported by a centrifugal fan to the bag filter, where it undergoes further filtration to remove most of the dust. The gas still contains fine dust that is difficult for bag filters to capture. The air containing fine dust then enters the electrostatic precipitator, where it captures the fine dust to ensure the air meets emission standards. An axial flow fan draws the filtered air from the electrostatic precipitator through an exhaust port and discharges it through an exhaust chimney. This device improves dust filtration, reduces residual dust in the air, and thus enhances the purification quality of dusty air. By using diversion pipes, telescopic pipes, and dust collection hoods, the dust collection hoods can be installed at various dust-generating points in concrete production, ensuring that dusty air at each point is effectively collected.

[0007] Preferably, the bag filter includes a first housing, with an mounting plate fixedly connected to the upper part of the first housing, and a plurality of dust collection bags arranged in a rectangular array inside the mounting plate.

[0008] By adopting the above technical solution, the dust-laden air that has undergone preliminary separation is transported to the bag filter under the action of a centrifugal fan. The dust-laden gas that has undergone preliminary separation is filtered by multiple dust collection bags arranged in a rectangular array inside the mounting plate, thereby removing most of the impurities in the dust-laden air.

[0009] Preferably, a second unloading valve is fixedly connected to the bottom of the bag filter, and supports are fixedly connected to both sides of the bag filter.

[0010] By adopting the above technical solution, the second discharge valve can be opened to discharge the dust from the bottom of the bag filter when collecting dust, and the bracket supports the device.

[0011] Preferably, an air tank is fixedly connected to one side of the upper end of the bag filter dust collector. Multiple jet pipes arranged in a linear array are fixedly connected to the bottom of the outer wall of the air tank. Multiple jet heads arranged in a linear array are fixedly connected to the bottom of the outer wall of one end of the multiple jet pipes. Solenoid valves are fixedly connected to the outer walls of the multiple jet pipes. An air pump is fixedly connected to one side of the bag filter dust collector. The output end of the air pump is fixedly connected to the air tank. The multiple jet heads correspond to the dust collector bags.

[0012] By adopting the above technical solution, air is injected into the air tank through an air pump to form high-pressure air inside the air tank. When cleaning the inside of the bag filter, the high-pressure air can be introduced into the jet pipe by opening the solenoid valve. The high-pressure air is then blown into the dust collector bag through the jet nozzle at the bottom of the outer wall of the jet pipe, blowing off the dust attached to the outer wall of the dust collector bag, thereby achieving the cleaning effect of the dust collector bag.

[0013] Preferably, a control box is fixedly connected to one side of the bag filter dust collector, and the control box body is electrically connected to the centrifugal fan, electrostatic precipitator, exhaust seat, solenoid valve and air pump respectively.

[0014] By adopting the above technical solution, and through the electrical connection between the control box and the centrifugal fan, electrostatic precipitator, exhaust seat, solenoid valve, and air pump, the control box can achieve centralized control of the centrifugal fan, electrostatic precipitator, exhaust seat, solenoid valve, and air pump.

[0015] Preferably, a dust storage tank is fixedly connected to the bottom end of the air inlet pipe, a discharge pipe is fixedly connected to the bottom end of the dust storage tank, a sealing cap is fixedly connected to the bottom end of the discharge pipe by bolts, and four connecting rods arranged in a circular array are fixedly connected to the upper end of the dust storage tank.

[0016] By adopting the above technical solution, the dust separated inside the cyclone separator can be collected and temporarily stored inside the dust storage tank for later centralized collection. When dust collection is required, the sealing cover can be disassembled by rotating the bolts, and the dust inside the dust storage tank can be discharged through the discharge pipe.

[0017] Preferably, the electrostatic precipitator includes a second housing, a positive electrode plate is fixedly connected to one side inside the second housing, a negative electrode plate is fixedly connected to the end of the second housing away from the positive electrode plate, and a high-voltage power supply is fixedly connected to the upper end of the second housing, the high-voltage power supply being electrically connected to the positive electrode plate and the negative electrode plate respectively.

[0018] By adopting the above technical solution, the positive and negative poles of the high-voltage power supply are electrically connected to the positive and negative electrode plates respectively, so that an electric field is formed between the positive and negative electrode plates. Fine dust particles inside the air adsorb charges and become charged. Under the action of the electric field, the charged dust particles move towards and adhere to the electrode plates with opposite polarity.

[0019] Preferably, the end of the connecting pipe furthest from the electrostatic precipitator is fixedly connected to the bag filter.

[0020] By adopting the above technical solution, the air filtered by the bag filter enters the electrostatic precipitator through the connecting pipe.

[0021] In summary, this application includes at least one of the following beneficial technical effects: This concrete production dust removal device, through the arrangement of a bag filter, cyclone separator, and electrostatic precipitator, allows dust-laden gas to sequentially enter the cyclone separator, bag filter, and electrostatic precipitator. The dust-laden air first passes through the cyclone separator, where denser dust particles are initially separated. The pre-separated dust-laden air is then transported to the bag filter by a centrifugal fan. Multiple rectangularly arrayed filter bags inside the mounting plate filter the pre-separated dust-laden gas, removing most of the impurities. The air after filtration still contains a small amount of fine dust that cannot be filtered by the filter bags. This air containing fine dust enters through a connecting pipe... Inside the electrostatic precipitator, a high-voltage power supply energizes the positive and negative electrode plates, creating an electric field between them. Fine dust particles in the air attract the charge, becoming charged themselves. Under the influence of the electric field, these charged dust particles move towards and adhere to the electrode plate with the opposite polarity, thus capturing the fine dust. Through the combined operation of the bag filter, cyclone separator, and electrostatic precipitator, the filtration effect of dust is improved, reducing the amount of residual dust in the air and enhancing the purification quality of dust-laden air. Furthermore, the installation of diversion pipes, telescopic pipes, and dust collection hoods allows the dust collection hoods to be placed at various dust-generating points in concrete production, ensuring that dust-laden air from each point is effectively collected. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the dust extraction structure of this application; Figure 3 This is a schematic diagram of the electrostatic precipitator structure according to this application. Figure 4 This is a schematic diagram of the internal structure of the electrostatic precipitator according to the present application. Figure 5This is a schematic diagram of the internal structure of the bag filter dust collector according to the present application. Figure 6 This is a side-view perspective three-dimensional structural diagram of the bag filter dust collector according to the present application.

[0023] In the picture: 1. Baghouse dust collector; 101. First housing; 102. Mounting plate; 103. Dust collector bag; 2. Cyclone separator; 3. Inlet pipe; 4. Diverter pipe; 5. Telescopic pipe; 6. Dust collection hood; 7. Centrifugal fan; 8. Electrostatic precipitator; 801. Second housing; 802. Positive electrode plate; 803. Negative electrode plate; 804. High voltage power supply; 9. Connecting pipe; 10. Exhaust seat; 11. Axial flow fan; 12. Exhaust chimney; 13. First discharge valve; 14. Dust storage tank; 15. Discharge pipe; 16. Sealing cover; 17. Connecting rod; 18. Second discharge valve; 19. Support; 20. Air tank; 21. Jet pipe; 22. Jet nozzle; 23. Solenoid valve; 24. Air pump; 25. Control box. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0025] Example 1: A dust removal device for concrete production, referring to... Figure 1 , Figure 2 and Figure 3The system includes a baghouse dust collector 1, with a cyclone separator 2 fixedly connected to one side. An inlet pipe 3 is fixedly connected to the upper outer wall of the cyclone separator 2. When dust-laden gas enters the device, it first enters the cyclone separator 2, where centrifugal force initially separates the dust. After the dust-laden airflow enters the cyclone separator 2 through the inlet pipe 3, it rotates at high speed along the inner wall. The resulting centrifugal force throws denser dust particles towards the inner wall, where they slide down to the bottom. The separated clean airflow is then blown out from the outlet of the cyclone separator 2. A diversion pipe 4 is fixedly connected to the end of the inlet pipe 3 furthest from the cyclone separator 2. Four telescopic pipes 5 arranged in a straight line are fixedly connected to the outer wall of the diversion pipe 4. Dust collection hoods 6 are fixedly connected to the ends of the four telescopic pipes 5 furthest from the diversion pipe 4. The dust collection hoods 6 can be installed at various dust-generating points in concrete production through the telescopic pipes 5, ensuring that dust-laden air at each dust-generating point is effectively collected. A centrifugal fan 7 is fixedly connected to the outlet end of the cyclone separator 2. The dust-laden gas, after preliminary separation, is transported to the bag filter 1 by the centrifugal fan 7 for further filtration, removing most of the dust. An electrostatic precipitator 8 is fixedly connected to the end of the bag filter 1 away from the cyclone separator 2. A connecting pipe 9 is fixedly connected to one side of the electrostatic precipitator 8. An exhaust seat 10 is fixedly connected to the end of the electrostatic precipitator 8 away from the connecting pipe 9. An axial flow fan 11 is fixedly connected to the upper end of the exhaust seat 10. An exhaust chimney 12 is fixedly connected to the upper end of the axial flow fan 11. A first discharge valve 13 is fixedly connected to the bottom end of the electrostatic precipitator 8. Air containing fine dust passes through the electrostatic precipitator 8, and finally, the electrostatic precipitator 8 captures the fine dust in the air, making the air meet emission standards. The axial flow fan 11 extracts the filtered air from inside the electrostatic precipitator 8 through the exhaust seat 10 and discharges the air through the exhaust chimney 12.

[0026] Example 2: A dust removal device for concrete production, referring to... Figure 1 and Figure 5The bag filter dust collector 1 includes a first housing 101. An installation plate 102 is fixedly connected to the upper end of the first housing 101. Multiple dust collection bags 103 arranged in a rectangular array are arranged inside the installation plate 102. The dust-laden air, after preliminary separation, is transported to the bag filter dust collector 1 by the centrifugal fan 7. The multiple dust collection bags 103 arranged in a rectangular array inside the installation plate 102 filter the dust-laden air after preliminary separation, thereby removing most of the impurities in the dust-laden air. A second discharge valve 18 is fixedly connected to the bottom end of the bag filter dust collector 1. Supports 19 are fixedly connected to both sides of the bag filter dust collector 1. The second discharge valve 18 can be opened to discharge the dust at the bottom end of the bag filter dust collector 1 when collecting dust. The supports 19 support the device.

[0027] Reference Figure 1 , Figure 5 and Figure 6 A gas tank 20 is fixedly connected to one side of the upper end of the bag filter 1. Multiple jet pipes 21 arranged in a linear array are fixedly connected to the bottom of the outer wall of the gas tank 20. Multiple jet nozzles 22 arranged in a linear array are fixedly connected to the bottom of the outer wall of one end of each jet pipe 21. A solenoid valve 23 is fixedly connected to the outer wall of each jet pipe 21. An air pump 24 is fixedly connected to one side of the bag filter 1. The output end of the air pump 24 is fixedly connected to the gas tank 20. Each jet nozzle 22 corresponds to a dust collector bag 103. Air is injected into the gas tank 20 by the air pump 24, creating high-pressure air inside the tank. When cleaning the inside of the bag filter 1, the valve can be opened... Solenoid valve 23 allows high-pressure air to enter the jet pipe 21. The jet nozzle 22 at the bottom of the outer wall of the jet pipe 21 blows the high-pressure air into the dust collector bag 103, blowing off the dust adhering to the outer wall of the dust collector bag 103, thereby achieving the cleaning effect of the dust collector bag 103. A control box 25 is fixedly connected to one side of the bag dust collector 1. The control box 25 is electrically connected to the centrifugal fan 7, the electrostatic precipitator 8, the exhaust seat 10, the solenoid valve 23, and the air pump 24. Through the electrical connection between the control box 25 and the centrifugal fan 7, the electrostatic precipitator 8, the exhaust seat 10, the solenoid valve 23, and the air pump 24, the control box 25 can realize centralized control of the centrifugal fan 7, the electrostatic precipitator 8, the exhaust seat 10, the solenoid valve 23, and the air pump 24.

[0028] Reference Figure 1 , Figure 3 and Figure 4The bottom end of the air inlet pipe 3 is fixedly connected to a dust storage tank 14, and the bottom end of the dust storage tank 14 is fixedly connected to a discharge pipe 15. A sealing cap 16 is fixedly connected to the bottom end of the discharge pipe 15 by bolts. Four connecting rods 17 arranged in a circular array are fixedly connected to the upper end of the dust storage tank 14. The dust storage tank 14 collects the dust separated from the cyclone separator 2 and temporarily stores it inside for later centralized collection. When dust collection is required, the sealing cap 16 is removed by rotating the bolts, and the dust inside the dust storage tank 14 is discharged through the discharge pipe 15. The electrostatic precipitator 8 includes a second housing 801, and a positive electrode plate 802 is fixedly connected to one side of the interior of the second housing 801. A negative electrode plate 803 is fixedly connected to the end of the second housing 801 away from the positive electrode plate 802. A high-voltage power supply 804 is fixedly connected to the upper end of the second housing 801. The high-voltage power supply 804 is electrically connected to the positive electrode plate 802 and the negative electrode plate 803 respectively. By electrically connecting the positive and negative terminals of the high-voltage power supply 804 to the positive electrode plate 802 and the negative electrode plate 803 respectively, an electric field is formed between the positive electrode plate 802 and the negative electrode plate 803. Fine dust in the air adsorbs the charge and becomes charged. Under the action of the electric field, the charged dust moves towards the electrode plate with the opposite polarity and attaches to it. The end of the connecting pipe 9 away from the electrostatic precipitator 8 is fixedly connected to the bag filter 1. The air filtered by the bag filter 1 enters the interior of the electrostatic precipitator 8 through the connecting pipe 9.

[0029] The implementation principle of this application embodiment is as follows: In use, the dust collection hood 6 is first set at the dust-generating points of concrete production via the telescopic pipe 5, so that dust from each dust-generating point can be collected. The dust-laden air collected by each dust collection hood 6 is concentrated through the diversion pipe 4 and enters the cyclone separator 2 through the air inlet pipe 3. The dust-laden air rotates inside the cyclone separator 2, generating centrifugal force to separate the denser dust. The separated dust enters the dust storage tank 14 along the inner wall of the cyclone separator 2. The dust-laden air after being processed by the cyclone separator 2 is then transported to the bag filter 1 by the centrifugal fan 7. The air entering the bag filter 1 passes through the mounting plate 102. Multiple dust collector bags 103 are installed to filter the air entering the bag filter 1, removing most of the dust in the dusty air. At this time, the air still contains fine dust that is difficult to be filtered by the dust collector bags 103. The air containing fine dust enters the electrostatic precipitator 8 through the connecting pipe 9. The electrostatic precipitator 8 is powered by the high voltage power supply 804 to the positive electrode plate 802 and the negative electrode plate 803, so that an electric field is formed between the positive electrode plate 802 and the negative electrode plate 803. The fine dust in the air adsorbs the charge and becomes charged. Under the action of the electric field, the charged dust moves towards the electrode plate with the opposite polarity and attaches to it, thereby capturing the fine dust. After use, air is injected into the air tank 20 by the air pump 24 to form high-pressure air inside the air tank 20. The high-pressure air can be allowed to enter the jet pipe 21 by opening the solenoid valve 23. The high-pressure air is blown into the dust collector bag 103 through the jet head 22 at the bottom of the outer wall of the jet pipe 21, blowing off the dust attached to the outer wall of the dust collector bag 103 and cleaning the dust collector bag 103. Finally, the sealing cover 16 can be removed by rotating the bolts to discharge the dust stored in the dust storage tank 14 that has been separated by the cyclone separator 2. Then, the dust collected inside the bag filter 1 can be collected by opening the second discharge valve 18. Finally, the fine dust collected inside the electrostatic precipitator 8 can be collected by opening the first discharge valve 13. This completes the collection of dust collected by the device.

Claims

1. A dust removal device for concrete production, comprising a bag filter (1), characterized in that: A cyclone separator (2) is fixedly connected to one side of the bag filter (1). An air inlet pipe (3) is fixedly connected to the upper end of the outer wall of the cyclone separator (2). A diversion pipe (4) is fixedly connected to the end of the air inlet pipe (3) away from the cyclone separator (2). Four telescopic pipes (5) arranged in a straight line array are fixedly connected to the outer wall of the diversion pipe (4). A dust collection hood (6) is fixedly connected to the end of the four telescopic pipes (5) away from the diversion pipe (4). A centrifugal fan is fixedly connected to the outlet end of the cyclone separator (2). (7) An electrostatic precipitator (8) is fixedly connected to one end of the bag filter (1) away from the cyclone separator (2). A connecting pipe (9) is fixedly connected to one side of the electrostatic precipitator (8). An exhaust seat (10) is fixedly connected to one end of the electrostatic precipitator (8) away from the connecting pipe (9). An axial flow fan (11) is fixedly connected to the upper end of the exhaust seat (10). An exhaust chimney (12) is fixedly connected to the upper end of the axial flow fan (11). A first unloading valve (13) is fixedly connected to the bottom end of the electrostatic precipitator (8).

2. The dust removal device for concrete production according to claim 1, characterized in that: The bag filter dust collector (1) includes a first housing (101), and an mounting plate (102) is fixedly connected to the upper end of the first housing (101). Multiple dust collector bags (103) arranged in a rectangular array are disposed inside the mounting plate (102).

3. The dust removal device for concrete production according to claim 1, characterized in that: The bottom of the bag filter (1) is fixedly connected to a second unloading valve (18), and both sides of the bag filter (1) are fixedly connected to brackets (19).

4. A dust removal device for concrete production according to claim 1, characterized in that: A gas tank (20) is fixedly connected to one side of the upper end of the bag filter (1). A plurality of jet pipes (21) arranged in a straight line are fixedly connected to the bottom of the outer wall of the gas tank (20). A plurality of jet nozzles (22) arranged in a straight line are fixedly connected to the bottom of the outer wall of one end of the multiple jet pipes (21). A solenoid valve (23) is fixedly connected to the outer wall of the multiple jet pipes (21). An air pump (24) is fixedly connected to one side of the bag filter (1). The output end of the air pump (24) is fixedly connected to the gas tank (20). The multiple jet nozzles (22) are all corresponding to the dust collector bag (103).

5. A dust removal device for concrete production according to claim 1, characterized in that: The bag filter (1) is fixedly connected to a control box (25) on one side. The control box (25) is electrically connected to the centrifugal fan (7), the electrostatic precipitator (8), the exhaust seat (10), the solenoid valve (23), and the air pump (24).

6. A dust removal device for concrete production according to claim 1, characterized in that: The bottom end of the air inlet pipe (3) is fixedly connected to a dust storage tank (14), the bottom end of the dust storage tank (14) is fixedly connected to a discharge pipe (15), the bottom end of the discharge pipe (15) is fixedly connected to a sealing cap (16) by bolts, and the upper end of the dust storage tank (14) is fixedly connected to four connecting rods (17) arranged in a ring array.

7. A dust removal device for concrete production according to claim 1, characterized in that: The electrostatic precipitator (8) includes a second housing (801), a positive electrode plate (802) is fixedly connected to one side inside the second housing (801), a negative electrode plate (803) is fixedly connected to one end inside the second housing (801) away from the positive electrode plate (802), and a high-voltage power supply (804) is fixedly connected to the upper end of the second housing (801). The high-voltage power supply (804) is electrically connected to the positive electrode plate (802) and the negative electrode plate (803) respectively.

8. A dust removal device for concrete production according to claim 1, characterized in that: The end of the connecting pipe (9) away from the electrostatic precipitator (8) is fixedly connected to the bag filter (1).

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