Pyrolysis gas dust removal device

Abstract

The utility model discloses a pyrolysis gas dust removal device, belongs to the technical field of dust removal devices, and solves the problem that a cleaning mechanism for internal dust removal in an existing dust removal device is complex in structure. The dust removal device comprises a dust removal box, one side of the dust removal box is communicated with an exhaust pipe, and the other side of the dust removal box is communicated with a negative pressure pipeline through a Tesla valve; at least two filter screens are arranged in the dust removal box, and a vibration motor is arranged at the bottom of the screen face of each filter screen. The filter screen is directly vibrated through the vibration motor, dust remaining on the filter screen can be shaken off into the dust discharging cylinder, and compared with the prior art, no extra driving mechanism is arranged, the structure is simple, and the improvement cost is low. And in order to avoid or reduce the phenomenon that part of the pyrolysis gas directly enters the dust removal cylinder under the obstruction of the filter screen, the pyrolysis gas is guided to move by arranging the negative pressure of the negative pressure pipeline, and meanwhile, a Tesla valve on the negative pressure pipeline avoids the phenomenon of reverse channeling of the pyrolysis gas by utilizing the one-way airflow characteristic of the Tesla valve.

Description

Technical Field

[0001] This utility model relates to the technical field of dust removal devices, specifically to a pyrolysis gas dust removal device. Background Technology

[0002] In the battery positive and negative electrode recovery mechanism, the generation of pyrolysis gas is accompanied by a large amount of fine dust in the exhaust gas. This not only affects the purity of the pyrolysis gas, but may also damage the subsequent recovery and treatment equipment. Therefore, it is necessary to treat the dust in the pyrolysis gas. However, the existing dust removal device does not have a cleaning mechanism to clean the internal dust.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN217855196U discloses a waste gas dust collector and dust cleaning device, which includes a dust removal mechanism, an air filling mechanism, and a dust collector body. The dust collector body has a purification chamber and a dust collection chamber inside, with the dust removal mechanism located within the dust collection chamber. The air filling mechanism is installed on one side of the dust collector body. The dust removal mechanism includes a drive assembly and a dust removal assembly. Through the cooperation of the dust removal mechanism, the air filling mechanism, the dust collector body, and the dust collection mechanism, when the air filtration efficiency of the dust collector body decreases, the dust removal mechanism is activated, causing the dust removal brush to drive the dust removal assembly to remove dust from the outer wall of the dust collection cylinder. Simultaneously, the valve of the air filling mechanism is opened, allowing air to circulate through the air guide pipe to the connecting pipe and the dust removal ring, thereby cleaning the dust on the outer surface of the dust collection cylinder through multiple sets of air outlets. Although this waste gas dust collector and dust cleaning device can remove dust from the dust collection cylinder by driving the dust removal brush through the drive assembly, the drive assembly has a complex structure and high cost. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a pyrolysis gas dust removal device, which solves the problem of complex structure of the cleaning mechanism used for internal dust removal in existing dust removal devices.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pyrolysis gas dust removal device is provided, including a dust removal box. One side of the dust removal box is connected to an exhaust pipe for pyrolysis furnace exhaust, and the other side of the dust removal box is connected to a negative pressure pipeline through a Tesla valve. At least two filter screens are provided inside the dust removal box, and a vibration motor is provided at the bottom of the screen of each filter screen. A dust discharge cylinder is provided at the bottom of the dust removal box.

[0007] The beneficial effects of this solution are as follows: By directly vibrating the filter screen with a vibration motor, the dust remaining on the filter screen can be shaken off into the dust collection cylinder. Compared with existing technologies, no additional drive mechanism is required, resulting in a simple structure and low modification cost. Furthermore, to avoid or reduce the phenomenon of some pyrolysis gas directly entering the dust collection cylinder due to obstruction by the filter screen, negative pressure is used in the negative pressure pipeline to guide the movement of the pyrolysis gas. Simultaneously, the Tesla valve on the negative pressure pipeline utilizes its unidirectional airflow characteristic to prevent backflow of pyrolysis gas. The Tesla valve is a passive unidirectional flow channel structure without moving parts, which is simpler than the unidirectional valve structure relying on valve discs in existing technologies. It is less prone to dust blockage, suitable for dusty gases, and has low maintenance costs.

[0008] Furthermore, a conical guide tube is installed at the outlet of the exhaust pipe, with the large-diameter end of the guide tube connected to the dust collection box. The conical guide tube can guide the pyrolysis gas to diffuse evenly into the dust collection box, avoiding the airflow directly hitting the filter screen and causing local blockage, while reducing the impact of turbulence on the filter screen and extending the service life of the filter screen.

[0009] Furthermore, the top of the dust collector is connected to an air duct, inside which is a fan connected to a motor drive. During the dust removal process from the filter screen, the top fan can be used to blow the dust into the dust collector.

[0010] Furthermore, a filter baffle with multiple filter holes is detachably installed on the top inner part of the dust collector. The filter baffle prevents dust from the pyrolysis gas from entering the fan.

[0011] Furthermore, the top of the dust collector is a removable cover, and the air duct connects to the interior of the dust collector through an air vent on the cover. The removable cover design facilitates opening the dust collector for internal inspection or replacement of the filter screen or filter baffle.

[0012] Furthermore, the top and bottom of each filter frame are snapped into mounting brackets fixed inside the dust collector, and each mounting bracket is equipped with at least two locking bolts. The snap-fit ​​mounting brackets, combined with the locking bolts, ensure that the filter remains stable during vibration, preventing displacement or detachment.

[0013] Furthermore, each filter screen has a mesh size of 50 to 100. A 50-100 mesh filter screen balances high dust retention rate with reasonable airflow, avoiding frequent clogging due to excessively high mesh size or incomplete dust removal due to excessively low mesh size, thus optimizing the balance between filtration efficiency and maintenance costs.

[0014] Furthermore, the Tesla valve is made of stainless steel. Stainless steel Tesla valves are resistant to high temperatures and corrosion, making them suitable for the high-temperature and chemically corrosive environments of pyrolysis gases, extending valve lifespan and reducing failure rates. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a pyrolysis gas dust removal device.

[0016] The components include: 1. Dust collection box; 11. Filter plate; 12. Air duct; 13. Fan; 2. Exhaust pipe; 21. Flow guide tube; 3. Negative pressure pipeline; 4. Tesla valve; 5. Filter screen; 6. Vibration motor; 7. Dust discharge cylinder. Detailed Implementation

[0017] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0018] refer to Figure 1 This embodiment provides a pyrolysis gas dust removal device to solve the problem of complex structure of the cleaning mechanism used for internal dust removal in existing dust removal devices. It is shown in detail below.

[0019] A pyrolysis gas dust removal device includes a dust collection box 1, with an exhaust pipe 2 connected to one side of the dust collection box 1 for exhausting gas from the pyrolysis furnace. A conical guide tube 21 is installed at the outlet of the exhaust pipe 2, with its large-diameter end connected to the dust collection box 1. The conical guide tube 21 guides the pyrolysis gas to diffuse evenly into the dust collection box 1, preventing the airflow from directly impacting the filter screen 5 and causing localized blockage. It also reduces the impact of turbulence on the filter screen 5, extending its service life.

[0020] The other side of the dust collection box 1 is connected to the negative pressure pipe 3 via a Tesla valve 4. The negative pressure pipe 3 is existing technology and can be connected to a negative pressure fan, air pump, or factory negative pressure air source. The specific working principle and connection relationship of the negative pressure pipe 3 will not be described in detail in this embodiment.

[0021] Tesla valve 4 is made of stainless steel. The stainless steel Tesla valve 4 is resistant to high temperatures and corrosion, adapting to the high-temperature and chemically corrosive environment of pyrolysis gas, extending valve life and reducing failure rate. On the negative pressure pipeline 3, Tesla valve 4 utilizes its unidirectional airflow characteristic to prevent pyrolysis gas backflow. Tesla valve 4 is a passive unidirectional flow channel structure without moving parts, which is simpler than existing unidirectional valve structures that rely on valve discs. It is less prone to dust blockage, suitable for dusty gases, and has low maintenance costs.

[0022] The dust collection box 1 is equipped with at least two filter screens 5. The top and bottom of the frame of each filter screen 5 are fitted into a fixing seat fixed inside the dust collection box 1, and each fixing seat is equipped with at least two locking bolts.

[0023] Each filter screen 5 has a vibration motor 6 installed at the bottom of its mesh surface. The base of the vibration motor 6 can be directly bolted onto the filter screen 5 by passing through the mesh surface of the filter screen 5 with a nut.

[0024] The bottom of the dust collection box 1 is equipped with a dust discharge cylinder 7, which is used to collect the dust filtered out by the filter screen 5.

[0025] In this embodiment, the mesh size of each filter screen 5 is 50-100. By directly vibrating the filter screen 5 with the vibration motor 6, the dust remaining on the filter screen 5 can be shaken off into the dust discharge cylinder 7. Compared with the prior art, there is no additional drive mechanism, the structure is simple and the modification cost is low.

[0026] As a further embodiment, a filter baffle 11 is detachably installed on the inner top of the dust collector 1, and the filter baffle 11 has multiple filter holes. The top of the dust collector 1 is a detachable cover, and the air duct 12 communicates with the interior of the dust collector 1 through the air vent on the cover. The detachable cover design facilitates opening the dust collector 1 for internal inspection or replacement of the filter screen 5 or the filter baffle 11.

[0027] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A pyrolysis gas dust removal device, characterized in that, The dust collector includes a dust collection box (1), one side of which is connected to an exhaust pipe (2) for pyrolysis furnace exhaust, and the other side of which is connected to a negative pressure pipe (3) via a Tesla valve (4); the dust collection box (1) is equipped with at least two filter screens (5), and each filter screen (5) has a vibration motor (6) at the bottom of its surface; the bottom of the dust collection box (1) is equipped with a dust discharge cylinder (7).

2. The pyrolysis gas dust removal device according to claim 1, characterized in that, The exhaust pipe (2) is provided with a conical guide tube (21) at the outlet, and the large diameter end of the guide tube (21) is connected to the dust collector (1).

3. The pyrolysis gas dust removal device according to claim 1, characterized in that, The top air duct (12) of the dust collector (1) is connected, and a fan (13) connected to the motor drive is installed inside the air duct (12).

4. The pyrolysis gas dust removal device according to claim 3, characterized in that, The dust collection box (1) is detachably equipped with a filter partition (11) on its inner top, and the filter partition (11) is provided with multiple filter holes.

5. The pyrolysis gas dust removal device according to claim 3, characterized in that, The top of the dust collector (1) is a detachable cover plate, and the air duct (12) is connected to the interior of the dust collector (1) through the air vent on the cover plate.

6. The pyrolysis gas dust removal device according to claim 1, characterized in that, The top and bottom of each filter screen (5) frame are fitted into a fixed seat fixed inside the dust collection box (1), and each fixed seat is provided with at least two locking bolts.

7. The pyrolysis gas dust removal device according to claim 1, characterized in that, Each of the filter screens (5) has a mesh size of 50 to 100.

8. The pyrolysis gas dust removal device according to claim 1, characterized in that, The Tesla valve (4) is made of stainless steel.

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