Dust removal device for dust remover and dust removal system

Abstract

The utility model relates to a dust removal device for a dust remover and a dust removal system. The dust removing device comprises a spiral conveyor connected with the bottom of the dust remover through a first connecting pipe, a transfer storage bin connected with the spiral conveyor, a powder conveying pump connected with the transfer storage bin through a second connecting pipe and a discharging pipe connected to the powder conveying pump, and a control valve is arranged on the first connecting pipe; a pressure balance pipe is further connected between the dust remover and the spiral conveyor; the dust removing device further comprises a controller, and the controller is in signal connection with the control valve, the powder conveying pump and the spiral conveyor. According to the dust removing device, the control valve, the spiral conveyor, the powder conveying pump and other components are controlled through the controller, dust in the dust remover can be automatically removed in a dustless mode, the labor intensity of workers is greatly reduced, and secondary pollution of the dust is avoided.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology, and in particular to a dust removal device and dust removal system for a dust collector. Background Technology

[0002] TOPCON batteries use substances such as silane and phosphine during production. These substances, as process reaction gases, generate a large amount of fine dust upon combustion. Traditionally, this dust is handled using a pulse-jet baghouse dust collector, which traps the dust at the bottom of the collector. The dust is then manually collected by backflushing the bottom and using dust bags, followed by manual transport. However, this method is cumbersome, has poor sealing, generates significant dust at the operating site causing secondary environmental pollution, and is labor-intensive and inconvenient due to its complex operation and manual transport methods.

[0003] Chinese patent CN211384206U discloses a positive pressure bag filter dust collection system for a dual-unit electric arc furnace. The dust collector involves filter bags and ash hoppers connected to the bottom of the filter bags. The upper middle part of the ash hopper is connected to an air inlet pipe, which is connected to an air inlet pipeline. A positive pressure fan is installed on the air inlet pipeline. The bottom of the ash hopper is connected to an ash discharge pipe, which is connected to an ash storage tank. An acceleration fan is installed on the ash discharge pipe. The air inlet pipeline is also connected to the air inlet pipe and the ash discharge pipe through a three-way pipe. When ash is discharged, the electromagnetic valve is opened, the positive pressure fan connects the air inlet pipeline and the ash discharge pipe, and the air inlet pipe is closed. The flue gas in the filter bag is momentarily under negative pressure under the action of the fan, and the filter bag is deformed. Then the electromagnetic valve is closed, and the pressure in the ash hopper returns to normal. The dust collected by the filter bag is shaken by the deformation of the filter bag and falls into the ash hopper. The dust at the bottom of the ash hopper is discharged into the ash storage tank. Although the dust removal system can reduce manual labor to some extent, the removal of dust from the dust collector still has problems such as complicated operation and low efficiency of dust removal from the dust collector. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dust removal device that can efficiently, safely, and intelligently remove dust from a dust collector, and this dust removal device can also avoid secondary environmental pollution.

[0005] The second objective of this invention is to provide a dust removal system that integrates dust collection, cleaning, and removal, with a simple process and no secondary environmental pollution.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] A dust removal device for a dust collector is provided. The dust removal device is used to remove dust inside the dust collector. The dust removal device includes a screw conveyor connected to the bottom of the dust collector via a first connecting pipe, a transfer storage silo connected to the screw conveyor, a powder conveying pump connected to the transfer storage silo via a second connecting pipe, and an external discharge pipe connected to the powder conveying pump. A control valve is provided on the first connecting pipe. A pressure balancing pipe is also connected between the dust collector and the screw conveyor.

[0008] The dust removal device also includes a controller, which is connected to the control valve, the powder conveying pump and the screw conveyor respectively.

[0009] In some embodiments, the dust removal device further includes a resistance sensor disposed on the dust collector, the resistance sensor being used to detect the amount of dust inside the dust collector, and the resistance sensor being signal-connected to the controller.

[0010] In some specific embodiments, the dust collector includes a filter bag and a dust hopper connected to the bottom of the filter bag, and the resistance sensor is disposed at the bottom of the dust hopper.

[0011] In some specific embodiments, the dust removal device further includes a level sensor disposed in the transfer storage silo, the level sensor being used to detect the amount of dust in the transfer storage silo, and the level sensor being signal-connected to the controller.

[0012] In some specific embodiments, a one-way balancing valve is provided on the pressure balancing pipe.

[0013] In some specific embodiments, the control valve is a pneumatic valve or an electric valve.

[0014] In some specific implementations, the controller is a PLC controller.

[0015] In some specific embodiments, the dust collector is a bag filter.

[0016] In some embodiments, the screw conveyor is connected to the transfer storage silo via a third connecting pipe, which is a transparent PVC pipe.

[0017] In some specific embodiments, the first connecting pipe is a PVC flexible hose, and the third connecting pipe is a PVC flexible hose.

[0018] In some specific embodiments, the dust removal device further includes a backflushing mechanism, which is signal-connected to the controller and connected to the inlet and outlet of the powder conveying pump via pipes.

[0019] In some specific embodiments, the inlet and outlet ends of the dust collector are respectively connected to an air inlet pipe and an air outlet pipe. A first pressure sensor is installed on the air inlet pipe, and a second pressure sensor is installed on the air outlet pipe. The first and second pressure sensors are respectively connected to the controller signal. The back-blowing mechanism is also connected to the air inlet pipe and the air outlet pipe through a pipe.

[0020] The second technical solution adopted by this utility model is: a dust removal system, including a dust collector, and the dust removal system further includes the dust removal device mentioned above.

[0021] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0022] The dust removal device of this utility model controls the opening of the control valve through the controller. With the presence of the pressure balance pipe, the dust in the dust collector is more easily discharged from the dust collector to the screw conveyor, and then transported to the transfer storage silo by the screw conveyor. Then, the powder conveying pump works under the control of the controller to discharge the dust in the transfer storage silo, so that the dust in the dust collector can be removed automatically and in a dust-free manner, which greatly reduces the labor intensity of personnel and can also avoid secondary dust pollution. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of the dust removal system according to an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A side view of the dust removal system.

[0026] Figure label:

[0027] 1. Dust collector; 1a. Filter bag; 1b. Ash hopper; 2. First connecting pipe; 3. Transfer storage silo; 4. Screw conveyor; 5. Powder conveying pump; 6. Control valve; 7. Resistance sensor; 8. Material level sensor; 9. Pressure balance pipe; 10. Controller; 11. Second connecting pipe. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art should fall within the protection scope of this utility model.

[0029] See Figures 1-2 The dust removal system includes a dust collector 1 and a dust removal device for removing dust from the dust collector 1.

[0030] The dust collector 1 can be a bag filter dust collector, which includes a filter bag 1a and a dust hopper 1b connected to the bottom of the filter bag 1a. The dust hopper 1b is conical, and the cross-sectional area of ​​the dust hopper 1b gradually decreases from top to bottom, which facilitates the collection of dust in the dust hopper 1b.

[0031] Depend on Figure 1 As can be seen, the dust removal device includes a screw conveyor 4 connected to the bottom of the ash hopper 1b via a first connecting pipe 2, a transfer storage silo 3 connected to the screw conveyor 4, a powder conveying pump 5 connected to the transfer storage silo 3 via a second connecting pipe 11, and an external discharge pipe connected to the powder conveying pump 5. A pressure balancing pipe 9 is also provided between the dust collector 1 and the screw conveyor 4. A control valve 6 is provided on the first connecting pipe 2. The control valve 6 can be a pneumatic valve or an electric valve.

[0032] For ease of observation, the first connecting pipe 2 is made of transparent PVC pipe, and a transparent PVC flexible hose is preferred. Quick-fixing clamps are used to secure and seal the transparent PVC flexible hose to the ash hopper 1b and the screw conveyor 4, preventing dust from spilling out. In some embodiments, the screw conveyor 4 and the transfer storage silo 3 are connected by a third connecting pipe, which can also be a transparent PVC pipe, but a transparent PVC flexible hose is preferred.

[0033] In some embodiments, the transit storage silo 3 is cone-shaped, with its cross-sectional area gradually decreasing from top to bottom, which facilitates the collection of dust.

[0034] To automate the removal of dust from the dust collector 1, the dust removal device also includes a controller 10. The controller 10 can be a PLC controller, integrating signal reception, signal processing, and information display. It features a touchscreen display and control software, providing an intuitive operating interface. The controller 10 is connected to the control valve 6, the screw conveyor 4, and the powder conveying pump 5. By controlling the opening of the control valve 6, the dust in the ash hopper 1b of the dust collector 1 is conveyed to the screw conveyor 4 via the first connecting pipe 2, and then to the transfer storage silo 3. Once the amount of dust in the transfer storage silo 3 reaches a certain level, the controller 10 controls the powder conveying pump 5 to discharge the dust from the transfer storage silo 3 into the sludge pond of the wastewater treatment plant. After the dust and sludge from the wastewater treatment plant are mixed, they are pressed by a filter press to form small mud cakes for off-site disposal.

[0035] See Figure 1 In some embodiments, the dust removal device further includes a resistance sensor 7 located at the bottom of the ash hopper 1b and a level sensor 8 located in the transfer storage silo 3. Both the resistance sensor 7 and the level sensor 8 are signal-connected to the controller 10. The resistance sensor 7 is used to detect the height of the dust in the ash hopper 1b. When the dust level in the ash hopper 1b is high, the controller 10 executes the ash discharge procedure, opening the control valve 6 on the first connecting pipe 2 to discharge the dust to the screw conveyor 4, and then to the transfer storage silo 3, thereby removing the dust from the dust collector 1. The level sensor 8 is used to detect the amount of dust in the transfer storage silo 3. When the detected dust level in the transfer storage silo 3 reaches above the middle position of the transfer storage silo 3, the controller 10 controls the powder conveying pump 5 to operate, transporting the powder in the transfer storage silo 3 to the sludge pond of the wastewater station via the powder conveying pump 5 and the external discharge pipe.

[0036] During dust emission, to prevent dust backflow or leakage when the internal air pressure of the screw conveyor 4 exceeds the internal air pressure of the dust collector 1, a one-way balancing valve is installed on the pressure balancing pipe 9. The one-way balancing valve also prevents dust from being unable to be discharged, thus avoiding blockage of the dust collector and ensuring a safe operating environment. In some embodiments, the pressure balancing pipe 9 is connected between the ash hopper 1b and the screw conveyor 4.

[0037] In some embodiments, the inlet end and outlet end of the dust collector 1 are respectively connected to an air inlet pipe and an air outlet pipe. A first pressure sensor is installed on the air inlet pipe and a second pressure sensor is installed on the air outlet pipe. The first pressure sensor and the second pressure sensor are respectively connected to the controller 10. The controller 10 is preset with a set pressure difference between the inside and outside of the dust collector 1.

[0038] The dust removal device also includes a back-blowing mechanism, which is signal-connected to the controller 10. This back-blowing mechanism is connected to the inlet and outlet pipes of the dust collector 1 via pipes. When the pressure difference between the first and second pressure sensors exceeds a preset pressure difference, the controller 10 controls the back-blowing mechanism to back-blow the dust collector 1, collecting the dust in the dust hopper 1b of the dust collector 1. The back-blowing mechanism is also connected to the inlet and outlet of the powder conveying pump 5 via pipes. The controller 10 controls the back-blowing mechanism to periodically back-blow the inlet and outlet of the powder conveying pump 5, facilitating regular maintenance and cleaning of the powder transfer pipeline.

[0039] Depend on Figure 1 visible, Figure 1 Multiple dust hoppers 1b are shown, each connected to the same screw conveyor 4 via a first connecting pipe 2. The screw conveyor 4 transports the dust from the multiple dust hoppers 1b to a transfer storage silo 3. The control valves 6 on the first connecting pipes 2 below each dust hopper 1b operate independently. Each dust hopper 1b is connected to the screw conveyor 4 via a pressure balancing pipe 9, and each pressure balancing pipe 9 is equipped with a one-way balancing valve.

[0040] Figure 2 A side view of the dust removal system is shown, from Figure 2 As can be seen, the controller 10 is located between the screw conveyor 4 and the transfer storage silo 3, facilitating observation and operation by the operator. Multiple dust collectors 1 can be installed, and each dust collector 1 can be equipped with one screw conveyor 4 and one transfer storage silo 3.

[0041] The working process of the dust removal system described above:

[0042] The controller 10 has a preset pressure difference for the pressure difference between the inside and outside of the dust collector 1. When the pressure difference between the inside and outside of the dust collector 1 detected by the first pressure sensor and the second pressure sensor is greater than the preset pressure difference, the controller 10 controls the back-blowing mechanism to back-blow the dust collector 1, so that the dust intercepted on the surface of the filter bag 1a falls to the bottom of the dust collector 1.

[0043] The controller 10 also has a preset height value for the dust height in the ash hopper 1b. When the resistance sensor 7 detects that the dust height in the ash hopper 1b exceeds the preset height value, the controller 10 performs ash discharge. The controller 10 controls the control valve 6 to open, and discharges the dust in the ash hopper 1b to the screw conveyor 4. The screw conveyor 4 then transports the dust to the transfer storage silo 3.

[0044] The controller 10 also has a preset height value for the dust level in the transfer storage silo 3. When the level sensor 8 detects that the dust level in the transfer storage silo 3 exceeds the preset height value, the controller 10 starts the powder conveying pump 5 to transport the dust in the transfer storage silo 3 to the sludge pool of the wastewater station. After the dust and sludge in the wastewater station are mixed, they are pressed by a filter press to form a small mud cake for off-site disposal.

[0045] The controller 10 is also preset with a periodic cleaning program for the powder conveying pump 5. The controller 10 controls the back-blowing mechanism to back-blow the inlet and outlet ends of the powder conveying pump 5, and periodically blows the pipeline to facilitate the periodic maintenance and cleaning of the dust transfer pipeline.

[0046] With the dust removal system set up above, the dust in the dust collector 1 can be controlled by the controller 10 through the control valve 6, screw conveyor 4 and powder conveying pump 5 and other components. The dust in the dust collector 1 can be treated in a dust-free and automated manner, which greatly reduces the labor intensity of personnel and avoids secondary dust pollution.

[0047] The dust removal system employing the aforementioned dust removal device integrates dust cleaning, collection, and automated removal, meeting the requirements for efficient, safe, and intelligent dust treatment. Furthermore, its compact overall structure facilitates easy installation and maintenance, and the tight connections between components ensure the stability and reliability of the overall system performance.

[0048] It should also be noted that the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of those features.

[0049] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] In addition, in the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical connection or electrical connection, or the internal connection of two components. They can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0051] The above embodiments are only used to illustrate the present utility model, and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model. The patent protection scope of the present utility model should be defined by the claims.

Claims

1. A dust removal device for a dust collector, the dust removal device being used to remove dust from inside the dust collector (1), characterized in that, The dust removal device includes a screw conveyor (4) connected to the bottom of the dust collector (1) via a first connecting pipe (2), a transfer storage silo (3) connected to the screw conveyor (4), a powder conveying pump (5) connected to the transfer storage silo (3) via a second connecting pipe (11), and an external discharge pipe connected to the powder conveying pump (5). A control valve (6) is provided on the first connecting pipe (2). A pressure balancing pipe (9) is also connected between the dust collector (1) and the screw conveyor (4); The dust removal device also includes a controller (10), which is connected to the control valve (6), the powder conveying pump (5) and the screw conveyor (4) respectively.

2. The dust removal device for a dust collector according to claim 1, characterized in that, A one-way balancing valve is installed on the pressure balancing pipe (9).

3. The dust removal device for a dust collector according to claim 1, characterized in that, The dust removal device also includes a resistance sensor (7) installed on the dust collector (1), the resistance sensor (7) is used to detect the amount of dust in the dust collector (1), and the resistance sensor (7) is signal connected to the controller (10).

4. The dust removal device for a dust collector according to claim 3, characterized in that, The dust collector (1) includes a filter bag (1a) and a dust hopper (1b) connected to the bottom of the filter bag (1a), and the resistance sensor (7) is disposed at the lower part of the dust hopper (1b).

5. The dust removal device for a dust collector according to claim 1, characterized in that, The dust removal device also includes a level sensor (8) installed in the transfer storage silo (3). The level sensor (8) is used to detect the amount of dust in the transfer storage silo (3). The level sensor (8) is connected to the controller (10) via a signal.

6. The dust removal device for a dust collector according to claim 1, characterized in that, The control valve (6) is a pneumatic valve or an electric valve; and / or, The controller (10) is a PLC controller; and / or, The dust collector (1) is a bag filter; and / or, The first connecting pipe (2) is a transparent PVC pipe; and / or, The screw conveyor (4) is connected to the transfer storage silo (3) via a third connecting pipe, which is a transparent PVC pipe.

7. The dust removal device for a dust collector according to claim 6, characterized in that, The first connecting pipe (2) is a PVC hose; and / or, the third connecting pipe is a PVC hose.

8. The dust removal device for a dust collector according to claim 1, characterized in that, The dust removal device also includes a backflushing mechanism, which is signal-connected to the controller (10). The backflushing mechanism is connected to the inlet and outlet of the powder conveying pump (5) via pipes.

9. The dust removal device for a dust collector according to claim 8, characterized in that, The inlet and outlet ends of the dust collector are respectively connected to the inlet pipe and the outlet pipe. A first pressure sensor is installed on the inlet pipe and a second pressure sensor is installed on the outlet pipe. The first pressure sensor and the second pressure sensor are respectively connected to the controller (10) via signals. The back-blowing mechanism is also connected to the inlet pipe and the outlet pipe via a pipe.

10. A dust removal system comprising a dust collector, characterized in that, The dust removal system further includes a dust removal device as described in any one of claims 1 to 9.

Images