Powder spraying equipment for reducing dust of lithium battery

Abstract

The powder spraying equipment comprises a machine body, a conveying mechanism, a main control system and a feeding mechanism, wherein the conveying mechanism, the main control system and the feeding mechanism are arranged on the machine body; the feeding mechanism is used for feeding falling materials to the conveying mechanism; the conveying mechanism is provided with a spiral conveying unit and a negative pressure conveying unit, the spiral conveying unit is provided with a spiral driver and a screw rod, the negative pressure conveying unit is provided with a negative pressure generator and a negative pressure pipe fitting used for being connected with a dust collector, and the discharging end of the screw rod is connected with the feeding end of the negative pressure pipe fitting; and the spiral driver and the negative pressure generator are electrically connected with the main control system, so that the main control system controls the spiral driver to drive the screw rod to rotate, conveys the falling materials to the negative pressure pipe fitting in a timed and quantitative manner, and controls the negative pressure generator to generate negative pressure in the negative pressure pipe fitting and spray the falling materials into the dust collector. Therefore, the falling materials are automatically conveyed to the dust collector through the conveying mechanism, the dust is mixed and diluted, the harm of dust explosion is solved from the source, and the safety is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust explosion -proof environmental protection equipment technical field especially relates to a kind of powder spraying equipment for lithium battery dust. BACKGROUND

[0002] In the production process of lithium battery, solar photovoltaic panel and other new energy products, dust pollutants will be generated, especially the stirring homogenate, slitting die cutting and sealing welding processes of lithium battery production will generate a large amount of dust. The raised dust and smoke not only pollute the working environment, but also affect the safety and stability of the battery. Since the dust contains metal elements such as aluminum and magnesium, when the dust reaches a certain concentration, there is a risk of fire and dust explosion. Therefore, dust removal equipment is needed, such as collecting dust generated by dust collector, but when the dust is collected by the dust collector and reaches a certain concentration, explosion is easy to occur, therefore, the dust collected by the dust collector needs to be further treated to prevent explosion and other safety accidents.

[0003] At present, the dust collected in the dust collector can only be vented to reduce the risk of dust explosion. For example, the Chinese utility model patent with the patent name "Explosion-proof dust collector for solar photovoltaic industry" with the publication number CN214159032U, which includes a box body, an air inlet and an air outlet are arranged on the box body, an explosion-proof collection box and a venting plate are arranged on the box body, a first low-explosion pressure diaphragm is arranged on the venting plate, the venting plate is connected with a release channel, the release channel is connected with a collection box, a second low-explosion pressure diaphragm is arranged in the release channel. When in use, if explosion occurs in the box body, the explosion pressure breaks the first low-explosion pressure diaphragm, then the explosive enters the release channel and breaks the second low-explosion pressure diaphragm, is released safely, and finally enters the collection box for collection, and the explosive is collected and treated.

[0004] However, the existing dust collector can only vent and release the collected dust to reduce the risk of dust explosion, and cannot solve the problem of dust explosion from the root. If the venting and releasing are not complete, it will still cause harm to the employees and cause economic losses such as damage to production equipment and products. UTILITY MODEL CONTENTS

[0005] In order to overcome the shortcomings of the prior art, the utility model aims to provide a powder spraying equipment for lithium battery dust.

[0006] The utility model discloses a powder spraying equipment for lithium battery dust, which comprises a machine body, a conveying mechanism, a main control system and a feeding mechanism for feeding the lithium battery dust into the conveying mechanism.

[0007] The conveying mechanism has a screw conveying unit and a negative pressure conveying unit, the screw conveying unit has a screw driver and a screw rod, the negative pressure conveying unit has a negative pressure generator and a negative pressure pipe for connecting with the dust collector, the discharge end of the screw rod is connected with the feeding end of the negative pressure pipe;

[0008] The screw driver and the negative pressure generator are electrically connected with the main control system, so that the main control system controls the screw driver to drive the screw rod to rotate and convey the coked material to the negative pressure pipe in a timed and quantitative manner, and controls the negative pressure generator to generate negative pressure in the negative pressure pipe and spray the coked material into the interior of the dust collector.

[0009] Further, the screw rod is arranged above the negative pressure pipe, the negative pressure pipe has a receiving pipe and a discharging pipe connected therewith, the discharge end of the screw rod is connected with the receiving pipe, and the negative pressure generator is arranged at the discharge end of the discharging pipe and connected with a dust pipe entering the dust collector.

[0010] Further, a butterfly valve is arranged between the receiving pipe and the discharging pipe, and the main control system is electrically connected with the butterfly valve and controls the butterfly valve to open or close the negative pressure pipe.

[0011] Further, the feeding mechanism has a hopper which is gradually narrowed from top to bottom, the hopper is arranged above the screw rod and feeds the coked material to be conveyed to the screw rod through a discharge port.

[0012] Further, a weighing module for obtaining the conveying amount of the coked material is arranged on the hopper, and the weighing module is electrically connected with the main control system, so that the main control system receives a weighing signal and sends an instruction to control the screw conveying unit to start or stop conveying action.

[0013] Further, a vibrator is arranged on one side of the discharge port of the hopper, and the vibrator is electrically connected with the main control system.

[0014] Further, a grid layer is arranged at the feeding port of the top of the hopper.

[0015] Further, a cover feeding box for feeding the coked material to the feeding port of the hopper is arranged on the machine body.

[0016] Further, a separator is connected with the butterfly valve, and the main control system is electrically connected with the separator and controls the separator to dry the moisture entering the butterfly valve.

[0017] Further, the mixing ratio of the coked material and the dust conveyed by the screw rod is 5:1.

[0018] Compared with the prior art, the beneficial effects of the utility model lie in: the powder spraying equipment provided by the embodiment of the application can realize automatic and timed quantitative conveying of the dust in the dust collector by mixing and diluting the dust in the dust collector, thereby preventing the explosion risk caused by too high dust concentration; compared with the prior art which only releases the explosion of the dust collected by the collector, the embodiment of the application can directly solve the harm of dust explosion at the source, so that the safety of the new energy production process such as lithium battery and solar photovoltaic panel is higher, green production is realized, and the work safety of employees and economic loss are protected. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall perspective view of the powder spraying equipment in the preferred embodiment of the utility model;

[0020] Figure 2 It is the perspective view of the internal assembly structure of the powder spraying equipment in the preferred embodiment of the utility model;

[0021] Figure 3 It is the schematic view of the assembly connection relationship between the hopper, the spiral conveying unit, the negative pressure conveying unit and the dust collector in the preferred embodiment of the utility model;

[0022] Figure 4 It is the working principle block diagram of the powder spraying equipment in the preferred embodiment of the utility model.

[0023] In the drawing:

[0024] 10, machine body; 101, top cover; 102, bottom cover; 103, layer plate;

[0025] 20, feeding mechanism; 201, hopper; 2011, feeding port; 2012, discharging port; 202, feeding box; 203, grid layer; 204, vibrator;

[0026] 30, conveying mechanism;

[0027] 301, spiral conveying unit; 3011, spiral drive; 3012, screw rod; 3013, conveying box;

[0028] 302, negative pressure conveying unit; 3021, negative pressure generator; 3022, negative pressure pipe; 3023, material receiving pipeline; 3024, discharging pipeline; 3025, butterfly valve;

[0029] 40, main control system; 401, weighing module; 402, separator; 4021, assembly box; 41, control electric box;

[0030] a. Dust collector. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] like Figures 1-4 As shown, a powder spraying device for degrading lithium battery dust is used to transport degradable materials to mix with dust generated during the production of new energy sources such as lithium batteries and solar photovoltaic panels, thereby diluting the dust, reducing the dust concentration, and thus achieving the purpose of preventing dust explosions. The degradable material used in this application embodiment can be limestone.

[0033] The powder spraying equipment includes a body, a feeding mechanism 20, a conveying mechanism 30, and a main control system 40. The body has a top cover, a bottom cover, and several shelves inside for starting support and installation. The feeding mechanism 20 and the conveying mechanism 30 are assembled on the shelves inside the body. The main control system 40 and other functional modules and control circuits are arranged in the control box 41 on the side of the body.

[0034] More specifically, the feeding mechanism 20 includes a feeding box 202 and a hopper 201. The feeding box 202 is installed on the top of the machine body and has a lockable cover. Therefore, after feeding the degradable material, the cover can be locked to prevent the degradable material from being thrown outward.

[0035] The hopper 201 has a gradually narrowing design from top to bottom, which allows the degradable material to slide slowly down the inner wall of the hopper 201, avoiding direct impact on the bottom of the hopper 201. The top of the hopper 201 is provided with an inlet 2011, and the bottom of the hopper 201 is provided with an outlet 2012. During installation, the upper and lower ends of the hopper 201 are fixed to the internal shelf of the machine body, and the inlet 2011 of the hopper 201 is correspondingly set with the feeding box 202, so that the degradable material fed through the feeding box 202 accurately enters the hopper 201 from the inlet 2011.

[0036] The feed inlet 2011 of the hopper 201 is provided with several grid layers 203. By setting the grid layers 203, the agglomerated and decomposed materials fed down through the feeding box 202 can be decomposed, preventing the agglomerated and decomposed materials from entering the hopper 201 and causing blockage, thereby improving the smoothness and accuracy of the material feeding of the hopper 201.

[0037] A vibrator 204 is installed on one side of the discharge port 2012 of the hopper 201. The vibrator 204 is electrically connected to the main control system 40. When the hopper 201 is discharging material, the main control system 40 controls the vibrator 204 to start and vibrate the hopper 201. This vibrates and arches the corrosive material in the hopper 201 near the discharge port 2012 (referred to as arching material in the industry). This prevents the corrosive material from obstructing the discharge port 2012 and avoids the problem of the corrosive material being squeezed and agglomerated again due to friction and adhesion, thereby improving the discharging effect of the corrosive material.

[0038] The conveying mechanism 30 has a screw conveying unit 301, which has a screw driver 3011 and a screw 3012. In this embodiment, the screw driver 3011 can be a motor. The output end of the screw driver 3011 is connected to the screw 3012. The screw 3012 is arranged horizontally below the discharge port 2012 of the hopper 201 through a conveying box 3013. The conveying box 3013 is connected to the discharge hopper 201 of the hopper 201. By setting the conveying box 3013, it is possible to prevent the decayed material from spilling outward when it is put onto the screw 3012, and to stabilize the discharge of the decayed material.

[0039] The screw drive 3011 is electrically connected to the main control system 40. Under the control of the main control system 40, the screw drive 3011 drives the screw 3012 to rotate and quantitatively conveys the degraded material to the discharge port at the end of the conveying box 3013.

[0040] Several weighing modules 401 are arranged around the feed inlet 2011 of the hopper 201. The weighing modules 401 are electrically connected to the main control system 40. Under the control of the main control system 40, the weighing modules 401 are driven to detect the weight of the molten material stored in the hopper 201 during the feeding and discharging process in real time. When the amount of molten material fed into the screw 3012 and conveyed out by the hopper 201 reaches a certain amount, the weighing modules 401 feed back a weighing signal to the main control system 40, triggering the main control system 40 to send a command to control the screw drive 3011 to stop working, thereby achieving the purpose of automated quantitative conveying of molten material.

[0041] For example, with the goal of conveying 500 grams of degraded material per hour, when there are 2000 grams of degraded material in the hopper 201, when the weighing module 401 detects that the hopper 201 has reduced by 500 grams of degraded material in 1 hour, it immediately sends a weighing signal to the main control system 40, and the main control system 40 sends a command to control the screw drive 3011 to stop driving the screw 3012 to feed material.

[0042] The conveying mechanism 30 has a negative pressure conveying unit 302, which has a negative pressure generator 3021 and a negative pressure pipe 3022. The negative pressure pipe 3022 is arranged below the screw 3012. The negative pressure pipe 3022 has a receiving pipe 3023 and a discharge pipe 3024. The receiving pipe 3023 is located below the discharge end of the screw 3012. The receiving pipe 3023 serves as the inlet of the negative pressure pipe 3022. Therefore, the receiving pipe 3023 is connected to the discharge port of the conveying box 3013 on the screw 3012. Thus, the degraded material conveyed by the screw 3012 to the discharge end will fall from the discharge port of the conveying box 3013 into the receiving pipe 3023.

[0043] The other end of the receiving pipe 3023 is connected to the discharge pipe 3024, which in turn is connected to the air pressure pipe that transports the dust to the dust collector a. Therefore, in order to achieve negative pressure transport of the degraded material in the receiving pipe 3023 and the discharge pipe 3024, the negative pressure generator 3021 is installed at the discharge end of the discharge pipe 3024. The negative pressure generator 3021 is electrically connected to the main control system 40. Under the control of the main control system 40, the negative pressure generator 3021 creates a vacuum environment at the discharge end of the discharge pipe 3024, so that the degraded material in the receiving pipe 3023 and the discharge pipe 3024 is transported towards the air pressure pipe under the action of air pressure difference, and mixes with the dust in the air pressure pipe before reaching the integrator.

[0044] In practical applications, the mixing ratio of degradable material to dust is 5:1. For example, if dust collector a is expected to collect 100 grams of dust per hour, then the powder spraying equipment is set to deliver 500 grams of degradable material to dust collector a per hour.

[0045] In order to ensure cleaner discharge of the degraded material in the receiving pipe 3023 and the discharge pipe 3024, an air blowing device can be installed at the front end of the receiving pipe 3023 to blow the degraded material in the receiving pipe 3023 and the discharge pipe 3024 toward the discharge end.

[0046] A butterfly valve is installed at the connection between the receiving pipe 3023 and the discharge pipe 3024. The butterfly valve 3025 is electrically connected to the main control system 40. Therefore, when the conveying of corrosive material is stopped, the main control system 40 can send a command to control the butterfly valve 3025 to cut off the connection between the receiving channel and the discharge channel. When the conveying of corrosive material is started, the butterfly valve 3025 is controlled to connect the receiving pipe 3023 and the discharge pipe 3024.

[0047] Since the butterfly valve 3025 is pneumatically controlled, the body is equipped with an assembly box 4021 for installing the separator 402. The separator 402 in the assembly box 4021 is electrically connected to the main control system 40. The main control system 40 controls the separator 402 to start and dry the airflow entering the butterfly valve, thereby ensuring the normal operation of the butterfly valve 3025 and improving the service life of the butterfly valve 3025.

[0048] Thus, this application embodiment provides a powder spraying device. The screw 3012 is driven by the screw driver 3011 of the screw conveying unit 301 to transport the precipitated material from the hopper 201 to the negative pressure conveying unit 302 in a timed and quantitative manner. Then, the negative pressure generator 3021 generates negative pressure at the discharge end of the negative pressure pipe 3022. The precipitated material in the negative pressure pipe 3022 is transported to the dust collector a by means of air pressure difference. The dust in the dust collector a is mixed and diluted, thereby realizing the automated timed and quantitative delivery of precipitated material to dilute the dust in the dust collector a, preventing the risk of explosion due to excessive dust concentration. Compared with the previous implementation methods that only vented and released the dust collected by the collector, this application embodiment can directly solve the hazards of dust explosion at the source, making the production process of new energy such as lithium batteries and solar photovoltaic panels safer, realizing green production, ensuring the safety of employees and avoiding economic losses.

[0049] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A powder spraying device for oxidized lithium battery dust, characterized in that, It includes a body and a conveying mechanism, a main control system, and a feeding mechanism for discharging degradable materials into the conveying mechanism; The conveying mechanism has a screw conveying unit and a negative pressure conveying unit. The screw conveying unit has a screw driver and a screw. The negative pressure conveying unit has a negative pressure generator and a negative pressure pipe for connecting to the dust collector. The discharge end of the screw is connected to the inlet end of the negative pressure pipe. The screw drive and negative pressure generator are electrically connected to the main control system, so that the main control system controls the screw drive to drive the screw to rotate and deliver the degrading material to the negative pressure pipe in a timed and quantitative manner, and controls the negative pressure generator to generate negative pressure in the negative pressure pipe and spray the degrading material into the dust collector.

2. The powder spraying equipment for inert lithium battery dust as described in claim 1, characterized in that, The screw is positioned above the negative pressure pipe, which has a receiving pipe and a discharging pipe connected to each other. The discharge end of the screw is connected to the receiving pipe, and the negative pressure generator is positioned at the discharge end of the discharging pipe and connected to the dust pipe entering the dust collector.

3. The powder spraying equipment for inert lithium battery dust as described in claim 2, characterized in that, A butterfly valve is installed between the receiving pipe and the discharging pipe. The main control system is electrically connected to the butterfly valve and controls the butterfly valve to open or close the negative pressure fitting.

4. The powder spraying equipment for inert lithium battery dust as described in claim 1, characterized in that, The feeding mechanism has a hopper that gradually narrows from top to bottom. The hopper is located above the screw and feeds the degraded material to be conveyed onto the screw through the discharge port.

5. The powder spraying equipment for inert lithium battery dust as described in claim 4, characterized in that, The hopper is equipped with a weighing module for obtaining the amount of degraded material being conveyed. The weighing module is electrically connected to the main control system so that the main control system receives the weighing signal and sends instructions to control the screw conveyor unit to start or stop the conveying action.

6. The powder spraying equipment for inert lithium battery dust as described in claim 4, characterized in that, A vibrator is installed on one side of the discharge port of the hopper, and the vibrator is electrically connected to the main control system.

7. The powder spraying equipment for inert lithium battery dust as described in claim 4, characterized in that, The feed inlet at the top of the hopper is equipped with a mesh layer.

8. The powder spraying equipment for inert lithium battery dust as described in claim 7, characterized in that, The machine body is equipped with a covered feeding box for discharging corrosive materials into the feed inlet of the hopper.

9. The powder spraying equipment for inert lithium battery dust as described in claim 3, characterized in that, The butterfly valve is connected to a separator, and the main control system is electrically connected to the separator and controls the separator to dry the moisture entering the butterfly valve.

10. The powder spraying equipment for inert lithium battery dust as described in any one of claims 1-8, characterized in that, The mixing ratio of the degradable material and dust in the screw conveyor is 5:1.

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