Dust removal system

Abstract

The dust removal system comprises a dust removal device and an inerting device, the inerting device comprises a hopper, a feeding mechanism, a discharging pipe and an alarm, the feeding mechanism is respectively communicated with an outlet of the hopper and an inlet of the discharging pipe, the feeding mechanism can convey inerting powder in the hopper into the discharging pipe, and the alarm is arranged on the discharging pipe. An outlet of the discharging pipe is communicated with a negative pressure dust suction pipe of the dust removal device, inerting powder can be mixed with flammable dust in the negative pressure dust suction pipe under the action of negative pressure so as to inert the flammable dust, the hopper is connected with a weighing assembly, and the dust removal device, the alarm and the weighing assembly are connected with the controller. The weight of inert powder in the hopper can be monitored in real time through the weighing assembly, when the weighing assembly monitors that the weight of the inert powder reaches an early warning threshold value, the alarm gives an alarm to timely remind material supplementation, meanwhile, the dust removal device stops, and the dust removal efficiency is improved. Therefore, the situation that the dust removal device continuously removes dust without inert powder due to untimely feeding is avoided, and the safety is good.

Description

Technical Field

[0001] The utility model relates to the field of battery manufacturing, in particular to a dust removal system. Background Art

[0002] During the battery manufacturing process, some processes will generate combustible dust (for example, a large amount of aluminum powder will be generated when welding the battery casing). The combustible dust is generally treated by a dust removal device. However, combustible dust is prone to combustion and explosion when encountering sparks or static electricity. For example, during the dust removal process, combustible dust is prone to friction with each other and generate sparks, causing an explosion.

[0003] In the prior art, the dust removal device is connected to an inerting device storing inert powder. During the dust removal process, the inerting device can transport the inert powder to the dust suction pipe of the dust removal device, so that the inert powder is mixed with the combustible dust to reduce the concentration of the combustible dust and make the combustible powder lose its explosiveness, thereby reducing the possibility of combustible dust explosion from the source. However, when the inert powder in the inerting device is used up, the staff cannot find and add inert powder in time, so that the dust removal device continues to work without inert powder, which poses a safety hazard. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a dust removal system, which can give an early warning of the stock of inert powder in the inerting device to remind timely replenishment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A dust removal system is provided, comprising:

[0007] A dust removal device, the dust removal device comprising a dust removal body and a negative pressure dust suction pipe connected to the dust removal body;

[0008] An inerting device, the inerting device includes a hopper for storing inert powder, a feeding mechanism, a discharge pipe and an alarm, the feeding mechanism is respectively connected to the outlet of the hopper and the inlet of the discharge pipe, the feeding mechanism can transport the inerting powder in the hopper to the discharge pipe, the outlet of the discharge pipe is connected to the negative pressure dust suction pipe, the inerting powder and the combustible dust are mixed in the negative pressure dust suction pipe, the hopper is connected to a weighing assembly, the weighing assembly is used to weigh the weight of the inert powder in the hopper, the dust removal device, the alarm and the weighing assembly are respectively connected to a controller.

[0009] As a preferred solution of the dust removal system, the negative pressure dust suction pipe is provided with a wind speed detection component, and the wind speed detection component is used to detect the wind speed in the negative pressure dust suction pipe. The wind speed detection component is connected to the controller, and a control valve is provided at the outlet of the hopper or the discharge pipe. The detection component and the control valve are respectively connected to the controller, and the controller can control the opening of the control valve.

[0010] As a preferred solution of the dust removal system, the hopper is further provided with a material level detection component, the material level detection component is connected to the controller, and the material level detection component is used to detect the material level height of the inert powder in the hopper.

[0011] As a preferred solution of the dust removal system, a dehumidification component is arranged in the hopper, and the dehumidification component includes a dehumidification box. A desiccant is arranged in the dehumidification box, and the desiccant is used to absorb moisture in the hopper.

[0012] As a preferred solution of the dust removal system, a vibrator is provided on the hopper.

[0013] As a preferred solution of the dust removal system, the hopper, the feeding mechanism and the discharge pipe are arranged in sequence from top to bottom, the feeding mechanism includes a closed outer shell, the interior of the outer shell is respectively connected with the outlet of the hopper and the inlet of the discharge pipe, a screw is arranged in the outer shell, blades are spirally wound around the outer circumference of the screw, one end of the screw is connected to a driving member, and the driving member can drive the screw and the blades to rotate.

[0014] As a preferred solution for the dust removal system, a stirring rod is provided in the hopper, one end of the stirring rod is provided outside the hopper and is connected to the screw through a transmission member, and the screw and the stirring rod can rotate synchronously.

[0015] As a preferred solution of the dust removal system, a feeding port is provided on the top of the hopper, and the inerting device further comprises a cover plate, which is sealed and covered at the feeding port through a buckle structure.

[0016] As a preferred solution of the dust removal system, a sealing ring is provided at the connection between the cover plate and the feeding port.

[0017] As a preferred solution of the dust removal system, it also includes a box, and the inerting device is arranged in the box;

[0018] A pulley is arranged at the bottom of the box; and / or a push handle is arranged on the box.

[0019] The beneficial effects of the utility model are as follows: the feeding mechanism is respectively connected with the outlet of the hopper and the inlet of the discharge pipe, so that the feeding mechanism can transport the inert powder in the hopper to the discharge pipe, and under the action of negative pressure, the inert powder is sucked into the negative pressure dust suction pipe and mixed with the combustible dust to reduce the concentration of the combustible dust, thereby reducing the risk of combustion and explosion of the combustible dust during the dust removal process; and the weight of the inert powder in the hopper can be monitored in real time through the weighing component. When the weight of the inert powder in the hopper reaches the early warning threshold, the alarm can sound an alarm to remind the staff that the inert powder in the hopper is about to run out, so that the staff can add the inert powder in time, and the dust removal device can be shut down at the same time to completely avoid the dust removal device continuing to remove dust in the absence of inert powder, further reducing the risk of combustion and explosion of the combustible dust during the dust removal process, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below based on the drawings and embodiments.

[0021] Figure 1 The figure is a simplified structural diagram of the dust removal system described in the embodiment of the utility model.

[0022] Figure 2 It is a schematic diagram of the structure of the inerting device described in an embodiment of the utility model.

[0023] Figure 3 It is a schematic diagram of the assembly structure of the hopper, the feeding mechanism and the discharge pipe described in an embodiment of the utility model.

[0024] In the figure:

[0025] 1. Inerting device; 11. Hopper; 12. Feeding mechanism; 121. Housing; 122. Screw; 123. Blade; 124. Driving member; 13. Discharging pipe; 14. Alarm; 15. Weighing assembly; 16. Control valve; 17. Material level detection member; 18. Cover plate; 19. Buckle structure; 20. Stirring rod; 201. Synchronous belt;

[0026] 2. Dust removal device; 21. Negative pressure suction pipe; 22. Dust removal body; 3. Controller; 4. Box body; 41. Push handle; 42. Pulley; 5. Dehumidification component. DETAILED DESCRIPTION

[0027] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The utility model provides a dust removal system for collecting dust generated in a battery manufacturing process, for example, for collecting combustible dust at a battery welding station, so as to reduce the risk of explosion of the combustible dust during the dust collection process.

[0030] Reference Figure 1 and Figure 2 The dust removal system includes a dust removal device 2 and an inerting device 1. The dust removal device 2 includes a dust removal body 22 and a negative pressure dust suction pipe 21 connected to the dust removal body 22. The inerting device 1 includes a hopper 11 for storing inert powder, a feeding mechanism 12, a discharge pipe 13 and an alarm 14. The feeding mechanism 12 is connected to the outlet of the hopper 11 and the inlet of the discharge pipe 13 respectively. The feeding mechanism 12 can transport the inerted powder in the hopper 11 to the discharge pipe 13. The outlet of the discharge pipe 13 is connected to the negative pressure dust suction pipe 21. Under the action of negative pressure, the inerted powder in the discharge pipe 13 can be sucked into the negative pressure dust suction pipe 21 and mixed with combustible dust to reduce the concentration of combustible dust and inertate the combustible dust, thereby reducing the risk of combustion and explosion of combustible dust during the dust removal process.

[0031] The hopper 11 is connected to a weighing assembly 15, which is used to weigh the weight of the inert powder in the hopper 11. The dust removal device 2, the alarm 14 and the weighing assembly 15 are respectively connected to the controller 3. It can be understood that the controller 3 is preset with an early warning threshold of the weight of the inert powder. When the weighing assembly 15 detects that the weight of the inert powder in the hopper 11 reaches the early warning threshold, the controller 3 can control the alarm 14 to sound an alarm to remind the staff that the inert powder in the hopper 11 is about to run out, so that the staff can add the inert powder in time, and control the dust removal device to stop at the same time.

[0032] Since the dust removal device 2 continues to remove dust while the staff is adding inert powder, the inert powder in the hopper 11 may be completely used up before the inert powder is added. There may also be a situation where the dust removal device 2 continues to remove dust without inert powder. When the alarm 14 sounds an alarm, the dust removal device 2 is shut down. Even if the inert powder is not added in time, the dust removal device 2 can be prevented from continuing to remove dust without inert powder, thereby further reducing the risk of combustion and explosion of combustible dust during the dust removal process and improving safety.

[0033] Furthermore, the controller 3 is also connected to the battery manufacturing equipment (such as welding equipment). When the weight of the inert powder in the hopper 11 reaches the warning threshold, the controller 3 can control the battery manufacturing equipment to shut down, that is, the controller 3 is respectively connected to the alarm 14, the dust removal device 2 and the battery manufacturing equipment to achieve interlocking, so as to avoid the battery manufacturing equipment generating a large amount of dust that cannot be handled in time when the dust removal system is shut down.

[0034] Optionally, the warning threshold includes an upper weight warning threshold and a lower weight warning threshold, wherein the upper weight warning threshold is greater than or equal to 20 kg, and the lower weight warning threshold is less than or equal to 2 kg. When the weight of the inert powder in the hopper 11 is lower than the lower weight warning threshold, the alarm 14 sounds an alarm to remind timely refilling, and when the weight of the inert powder in the hopper 11 exceeds the upper weight warning threshold, the alarm 14 reminds that refilling is completed to avoid overflow of the inert powder.

[0035] Specifically, the mixing ratio of the inert powder and the combustible dust is greater than or equal to 5:1 to ensure that the combustible dust can be inerted after mixing. Preferably, the mixing ratio of the inert powder and the combustible dust is 5:1 to avoid waste caused by excessive inert powder content and reduce costs.

[0036] Furthermore, the negative pressure dust suction pipe 21 is provided with a wind speed detection component (not shown in the figure), which may be a wind speed sensor, and is used to monitor the wind speed passing through the negative pressure dust suction pipe 21. The wind speed detection component is connected to the controller 3, and the controller 3 can calculate the concentration of combustible dust passing through the negative pressure dust suction pipe 21 through the wind speed detection component. A control valve 16 is provided at the outlet of the hopper 11 or the discharge pipe 13, and the control valve 16 includes but is not limited to a butterfly valve. The detection component and the control valve 16 are respectively connected to the controller 3, and the controller 3 can control the opening of the control valve 16 according to the concentration of combustible dust in the negative pressure dust suction pipe 21. Exemplarily, a control valve 16 is provided at the outlet of the hopper 11, and the controller 3 can calculate the required output of the inert powder according to the concentration of the combustible dust in the negative pressure suction pipe 21 and the preset mixing ratio, and then open the control valve 16. When the weighing component 15 measures that the output of the inert powder is the same as the calculated output of the inert powder, the control valve 16 is closed, thereby realizing precise control of the output of the inert powder to ensure that the inert powder and the combustible dust are mixed according to the preset mixing ratio.

[0037] Alternatively, if Figure 1 As shown, the hopper 11 is also provided with a level detection member 17, which is connected to the controller 3. The level detection member 17 is used to detect the level height of the inert powder in the hopper 11, and the level detection member 17 includes an upper level sensor and a lower level sensor. When the level of the inert powder in the hopper 11 is too low, the alarm 14 sounds an alarm to remind refilling, and when the level of the inert powder in the hopper 11 is too high, the alarm 14 sounds an alarm to remind refilling is completed. Through this design, the inerting device 1 can judge the remaining amount of the inert powder in the hopper 11 through the level detection member 17 and the weighing component 15 respectively to give an early warning, so as to play a double early warning role. When one of the level detection member 17 and the weighing component 15 is damaged, the other can also monitor the remaining amount of the inert powder in the hopper 11, thereby avoiding the failure of the early warning.

[0038] Optionally, the weighing assembly 15 includes but is not limited to a weighing sensor. For example, a cantilever beam weighing sensor, one end of which is fixed, and the other end is loaded by a steel ball, upper and lower pressure heads, or a double ball head structure, and has a good sealing structure. It can automatically adjust after being stressed, is easy to install, and is convenient to use.

[0039] Alternatively, if Figure 2 and Figure 3As shown, the hopper 11, the feeding mechanism 12 and the discharge pipe 13 are arranged in sequence from top to bottom. The feeding mechanism 12 includes a closed shell 121. The interior of the shell 121 is respectively connected with the outlet at the bottom of the hopper 11 and the inlet of the discharge pipe 13. The inerted powder in the hopper 11 can automatically fall into the shell 121 under the action of gravity. A screw 122 is arranged in the shell 121. A blade 123 is spirally wound around the outer circumference of the screw 122. One end of the screw 122 is connected to a driving member 124. The driving member 124 can drive the screw 122 and the blade 123 to rotate to transport the inerted powder in the shell 121 to the discharge pipe 13.

[0040] Preferably, if Figure 2 and Figure 3 As shown, the hopper 11 includes an opening portion and a cone portion connected to each other, the opening portion is located above the cone portion, the cone portion gradually shrinks from top to bottom, and the bottom of the cone portion is provided with an outlet connected to the inside of the housing 121. The hopper 11 can automatically slide the inert powder to the outlet under the action of gravity through the cone portion, so that the discharge of the hopper 11 is smoother.

[0041] Specifically, a feeding port is provided at the top of the hopper 11, and the inerting device 1 further comprises a cover plate 18, which is sealed and covered at the feeding port through a buckle structure 19. Exemplarily, one end of the cover plate 18 is hinged to the hopper 11 through a hinge structure, and the other end is covered at the feeding port through the buckle structure 19. The cover plate 18 can be pressed against the feeding port through the buckle structure 19 to seal the hopper 11, preventing moist air from entering the hopper 11 and causing the inert powder to become damp and agglomerated.

[0042] Further, a sealing ring (not shown) is provided at the connection between the cover plate 18 and the feeding port. Exemplarily, a sealing ring is sleeved around the periphery of the cover plate 18, and the sealing ring fills the gap between the cover plate 18 and the side wall of the feeding port to completely seal the hopper 11.

[0043] Since the cover plate 18 needs to be opened when adding materials, moist air will also enter the hopper 11 at this time. Figure 3 Optionally, a dehumidification component 5 is provided in the hopper 11. Exemplarily, the dehumidification component 5 includes a dehumidification box, and a desiccant is provided in the dehumidification box. The desiccant is used to absorb moisture in the hopper 11 to keep the internal environment of the hopper 11 dry and prevent the inert powder in the hopper 11 from getting damp and agglomerating.

[0044] Optionally, refer to Figure 3 A stirring rod 20 is rotatably provided in the hopper 11, and the stirring rod 20 is used to stir the inert powder in the hopper 11. Even if the inert powder in the hopper 11 is damp and agglomerated, it can be broken up by the stirring rod 20 to prevent the inert powder from being blocked or bridged, causing unsmooth discharge.

[0045] Exemplarily, one end of the stirring rod 20 is passed through the hopper 11, and the other end of the stirring rod 20 located outside the hopper 11 is transmission-connected to the driving member 124. Specifically, the screw 122 of the feeding mechanism 12 is connected to the end of the stirring rod 20 located outside the hopper 11 via a synchronous belt 201, and the output end of the driving member 124 of the feeding mechanism 12 is connected to the screw 122, so that the driving member 124 can drive the screw 122 and the stirring rod 20 to rotate at the same time. Therefore, the stirring rod 20 does not need to be separately provided with another driving member to realize rotation, which helps to reduce the number of components of the inerting device 1 and reduce costs.

[0046] Optionally, a vibrator (not shown) is provided on the hopper 11, and the vibrator can be a vibrator in the prior art. The vibrator can vibrate the hopper 11 to shake the inert powder to the outlet at the bottom of the hopper 11 to prevent the inert powder from adhering to the inner wall of the hopper 11.

[0047] Alternatively, if Figure 2 As shown, the dust removal system also includes a box 4, in which the inerting device 1 and the controller 3 are both arranged, and the box 4 can protect the inerting device 1 and the controller 3. A pulley 42 is arranged at the bottom of the box 4, and a push handle 41 is arranged on the box 4 to facilitate the movement and adjustment of the position of the inerting device 1, which helps to connect the inerting device 1 with the dust removal device 2.

[0048] It should be noted that the dust removal body 22 can adopt the dust removal structure of the prior art, and its specific structure will not be described in detail here.

[0049] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0050] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0051] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0052] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A dust removal system, characterized in that: include: A dust removal device, the dust removal device comprising a dust removal body and a negative pressure dust suction pipe connected to the dust removal body; An inerting device, the inerting device includes a hopper for storing inert powder, a feeding mechanism, a discharge pipe and an alarm, the feeding mechanism is respectively connected to the outlet of the hopper and the inlet of the discharge pipe, the feeding mechanism can transport the inert powder in the hopper to the discharge pipe, the outlet of the discharge pipe is connected to the negative pressure dust suction pipe, the inert powder and combustible dust are mixed in the negative pressure dust suction pipe, the hopper is connected to a weighing assembly, the weighing assembly is used to weigh the weight of the inert powder in the hopper, the dust removal device, the alarm and the weighing assembly are respectively connected to a controller.

2. The dust removal system according to claim 1, characterized in that: The negative pressure dust suction pipe is provided with a wind speed detection component, and the wind speed detection component is used to detect the wind speed in the negative pressure dust suction pipe. The wind speed detection component is connected to the controller. A control valve is provided at the outlet of the hopper or the discharge pipe. The detection component and the control valve are respectively connected to the controller, and the controller can control the opening of the control valve.

3. The dust removal system according to claim 1, characterized in that: The hopper is also provided with a material level detection component, which is connected to the controller and is used to detect the material level height of the inert powder in the hopper.

4. The dust removal system according to any one of claims 1 to 3, characterized in that: A dehumidification component is arranged in the hopper, and the dehumidification component includes a dehumidification box. A desiccant is arranged in the dehumidification box, and the desiccant is used to absorb moisture in the hopper.

5. The dust removal system according to any one of claims 1 to 3, characterized in that: The hopper is provided with a vibrator.

6. The dust removal system according to any one of claims 1 to 3, characterized in that: The hopper, the feeding mechanism and the discharge pipe are arranged in sequence from top to bottom. The feeding mechanism includes a sealed shell, the interior of the shell is respectively connected with the outlet of the hopper and the inlet of the discharge pipe, a screw is arranged in the shell, blades are spirally wound around the outer circumference of the screw, one end of the screw is connected to a driving member, and the driving member can drive the screw and the blades to rotate.

7. The dust removal system according to claim 6, characterized in that: A stirring rod is arranged in the hopper, one end of the stirring rod is arranged outside the hopper and is connected to the screw through a transmission member, and the screw and the stirring rod can rotate synchronously.

8. The dust removal system according to any one of claims 1 to 3, characterized in that: A feeding port is arranged on the top of the hopper, and the inerting device further comprises a cover plate, which is sealed and covered at the feeding port through a buckle structure.

9. The dust removal system according to claim 8, characterized in that: A sealing ring is provided at the connection between the cover plate and the feeding port.

10. The dust removal system according to any one of claims 1 to 3, characterized in that: It also includes a box, and the inerting device is arranged in the box; A pulley is arranged at the bottom of the box; and / or a push handle is arranged on the box.

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