Collecting device for flammable and explosive metal dust

Abstract

The utility model relates to the technical field of additive manufacturing, and discloses a collecting device for flammable and explosive metal dust, which comprises a pipeline loop, a negative pressure generator, a driver and a receiving barrel are communicated on the pipeline loop, circulating liquid is arranged in the pipeline loop, the negative pressure generator is communicated with a trap, the trap is used for collecting the metal dust, and the driver is connected with the receiving barrel. The negative pressure generator is used for generating negative pressure so as to suck metal dust out of the catcher and directly mix the sucked metal dust with circulating liquid, the receiving barrel is used for receiving the mixed metal dust and filtering the mixed metal dust, and the driver is used for driving the circulating liquid to continuously flow in a pipeline loop. Therefore, the mixed metal dust is continuously conveyed to the receiving barrel, and the circulating liquid is continuously conveyed out of the receiving barrel.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of additive manufacturing, specifically relates to a collection device for flammable and explosive metal dust. BACKGROUND

[0002] With the continuous breakthrough of key technologies, the additive manufacturing industry is developing rapidly. Additive manufacturing is based on digital model files, using powder-like metal or plastic and other adhesive materials, and constructing objects through layer-by-layer printing.

[0003] Currently in the field of batteries, most of the metal dust used has the characteristics of flammability and explosiveness, and the collection and treatment of dust is a big problem. The industry usually uses inert gas delivery and collects through a trap, but still faces the risk of combustion and explosion. For example, the commonly used trap needs to be manually replaced with a dust filter bag / filter cartridge to treat the enriched dust. Even if it is quickly completed in an inert gas environment, there is still a possibility of contact with air at the moment of replacement, and the combustion and explosion accident becomes a probability event. UTILITY MODEL CONTENT

[0004] The utility model provides a collection device for flammable and explosive metal dust, aiming to solve the technical problems in the prior art that there is still a possibility of contact with air at the moment of replacing the dust filter bag / filter cartridge to treat the enriched dust, and there is still a risk of combustion and explosion.

[0005] The utility model can be implemented through the following technical solutions:

[0006] A collection device for flammable and explosive metal dust, comprising a pipeline circuit, a negative pressure generator, a driver and a receiving barrel are communicatively arranged on the pipeline circuit, a circulating liquid is arranged inside, the negative pressure generator is in communication with the trap, the trap is used for collecting metal dust, the negative pressure generator is used for generating negative pressure to suck the metal dust out of the trap and directly mix the sucked metal dust with the circulating liquid, the receiving barrel is used for receiving the mixed metal dust and filtering it,

[0007] The driver is used to continuously drive the circulating liquid to flow in the pipeline circuit to continuously transport the mixed metal dust to the receiving barrel and continuously transport the circulating liquid out of the receiving barrel.

[0008] Further, a filter screen is arranged inside the receiving barrel, the inlet of the circulating liquid into the receiving barrel is arranged below the filter screen, the outlet of the circulating liquid out of the receiving barrel is arranged above the filter screen, and the filter screen only allows the circulating liquid to pass through.

[0009] Further, the filter screen is arranged obliquely, and the circulating liquid entering the receiving barrel through the inlet is directly shot onto the filter screen.

[0010] Furthermore, the mesh size of the filter screen is smaller than the particle diameter of the metal dust.

[0011] Furthermore, a one-way valve is installed at the inlet pipe of the receiving tank, and a first pneumatic butterfly valve is installed at the outlet pipe.

[0012] The negative pressure generator is configured as a venturi tube, and a second pneumatic butterfly valve is installed on the pipe between it and the trap.

[0013] Furthermore, the density of the circulating liquid is less than that of the metal dust, and it does not chemically react with the metal dust.

[0014] Furthermore, the circulating liquid is liquid water.

[0015] The beneficial technical effects of this utility model are as follows:

[0016] 1. When collecting and processing metal dust using the collection device of this utility model, the metal dust can be completely sealed in the liquid by circulating liquid under the drive of the driver. At the same time, the metal dust is sucked out of the collector by the negative pressure generator, which can also avoid the possibility of the metal dust coming into contact with the air. Thus, the entire collection process can be completely isolated from the air, which can greatly reduce the possibility of combustion and explosion accidents. It is safe and reliable, and the process is simple, easy to control, and highly practical.

[0017] 2. An inclined filter screen is installed inside the receiver, so that the mixed liquid entering the receiver is directly sprayed onto the filter screen. Since the density of the circulating liquid is less than that of the metal dust, and the mesh size of the filter screen is smaller than the particle diameter of the metal dust, only the circulating liquid can pass through, thus ensuring that there is always circulating liquid above the filter screen. Driven by the driver, there is always circulating liquid that can enter the circulation flow, ensuring the sustainability of the flow. At the same time, it also ensures that the metal dust is always immersed in the circulating liquid, providing protection against the occurrence of combustion and explosion accidents. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the collection device of this utility model;

[0019] Among them, 1-negative pressure generator, 2-driver, 3-receiving tank, 31-filter, 4-collector. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0021] like Figure 1As shown, this utility model also provides a collection device for flammable and explosive metal dust, including a pipeline circuit. A negative pressure generator 1, a driver 2, and a receiving tank 3 are connected and arranged in the pipeline circuit. A circulating liquid is disposed inside the receiving tank. The negative pressure generator 1 is connected to a collector 4, which is used to collect metal dust. The negative pressure generator 1 generates negative pressure to draw the metal dust out of the collector and mixes the drawn-out metal dust directly with the circulating liquid. The receiving tank 3 is used to receive the mixed metal dust and filter it.

[0022] The driver 2 is used to drive the circulating liquid to flow continuously in the pipeline loop, so as to continuously transport the mixed metal dust to the receiving tank and continuously discharge the circulating liquid from the receiving tank.

[0023] In this way, driven by the driver 2, the metal dust can be completely sealed in the liquid by using the circulating liquid to transport it. At the same time, the negative pressure generator 1 can be used to suck the metal dust out of the collector 4, which can also prevent the metal dust from coming into contact with the air. Thus, the entire collection process can be completely isolated from the air, which can greatly reduce the possibility of combustion and explosion accidents. It is safe and reliable, and the process is simple, easy to control, and highly practical.

[0024] Specifically as follows:

[0025] The negative pressure generator 1 can be a venturi tube, with its adsorption chamber inlet connected to the collector 4, and its fluid inlet and fluid outlet connected in the pipeline circuit. When the negative pressure generator 1 is started, the metal dust drawn out will be directly mixed into the circulating liquid. Driven by the driver 2, such as a pneumatic diaphragm pump, the circulating liquid mixed with metal dust will be transported to the contact tank. After being filtered by the receiving tank 3, only the circulating liquid is transported out of the receiving tank to continue flowing.

[0026] To address this, we can set the density of the circulating liquid to be less than that of the metal dust. Liquid water, such as household tap water, can be used, and it should not chemically react with the metal dust. A filter screen 31 is installed inside the receiving tank 3, with the inlet for the circulating liquid entering the receiving tank 3 located below the filter screen, and the outlet for the circulating liquid exiting the receiving tank located above the filter screen. The mesh size of the filter screen 31 is selected according to the particle size of the metal dust, making it smaller than the particle diameter of the metal dust, so that only the circulating liquid can pass through.

[0027] In this way, the filter screen 31 is used to filter and separate the mixed metal dust and circulating liquid in the receiving tank 3, so that the circulating liquid is on top and the metal dust is on the bottom, so that the circulating liquid in the receiving tank 3 can directly enter the circulation flow.

[0028] To ensure that there is circulating liquid inside the receiving tank 3 at the beginning, we can tilt the filter screen 31 so that the circulating liquid entering the receiving tank 3 through the inlet directly hits the filter screen 31. In this way, the metal dust will adhere to the filter screen 31 and then fall due to gravity, accumulating at the bottom of the receiving tank. The circulating liquid passes directly through the filter screen 31 and is stored above the filter screen 31. This creates a layered structure inside the receiving tank 3 with the circulating liquid on top and the metal dust below, achieving the effect of isolating the metal dust from the air, facilitating the storage of the metal dust, and ensuring that the circulating liquid can continue to flow.

[0029] For ease of control, we have installed a check valve at the inlet pipe of the receiving tank 3 and a first pneumatic butterfly valve at the outlet pipe; the negative pressure generator 1 can be configured as a venturi tube, and a second pneumatic butterfly valve is installed on the pipe between it and the collector.

[0030] The process of collecting metal dust using the collection device of this invention is as follows:

[0031] When the metal dust inside the collector 4 reaches the overflow warning line, the actuator 2 is controlled to work first. The actuator 2 provides power to open the first pneumatic butterfly valve and check valve, and deliver the circulating liquid to the negative pressure generator 1, i.e. the venturi tube, thereby causing the circulating liquid to flow in the pipeline circuit.

[0032] Then, the negative pressure generator 1 is controlled to work, and the second pneumatic butterfly valve is opened. The negative pressure generated by the special structure inside the venturi tube draws the metal dust out of the collector 4. The metal dust is transported into the receiving tank 3 along with the circulating liquid. The receiving tank 3 is equipped with a filter screen 31. After the mixed metal dust is directly sprayed onto the filter screen, it falls to the bottom of the tank due to gravity and accumulates. The mesh can only allow pure circulating liquid to pass through, so the tank is divided into upper and lower layers. The upper layer of circulating liquid is pumped out by the diaphragm pump for continued circulation, while the lower layer is metal dust immersed in the circulating liquid, achieving the effect of isolating the metal dust from the air and facilitating the storage of the metal dust. Throughout the process, the metal dust is isolated by the circulating liquid, minimizing the possibility of combustion and explosion.

[0033] In addition, a one-way valve is installed at the inlet of receiving tank 3 to prevent the circulating liquid from flowing back when the liquid level in the tank is high.

[0034] Finally, when the metal dust inside the receiving tank 3 reaches the warning line, it is still necessary to treat the metal dust inside. However, since the metal dust inside the receiving tank 3 is immersed in circulating liquid, it can completely isolate the air, thus reducing the risk of combustion and explosion. We can replace the entire receiving tank, or we can use liquid transportation to treat the metal dust inside the tank.

[0035] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples. Various changes or modifications can be made to these embodiments without departing from the principles and essence of the present invention. Therefore, the scope of protection of the present invention is defined by the appended claims.

Claims

1. A device for collecting flammable and explosive metal dust, characterized in that: The system includes a pipeline loop, on which a negative pressure generator, a driver, and a receiving tank are connected. A circulating liquid is installed inside the pipeline loop. The negative pressure generator is connected to a collector for collecting metal dust. The negative pressure generator generates negative pressure to draw the metal dust out of the collector and mix the drawn-out metal dust directly with the circulating liquid. The receiving tank receives the mixed metal dust and filters it. The driver is used to drive the circulating liquid to flow continuously in the pipeline loop, so as to continuously transport the mixed metal dust to the receiving tank and continuously discharge the circulating liquid from the receiving tank.

2. The collection device for flammable and explosive metal dust according to claim 1, characterized in that: A filter screen is installed inside the receiving tank. The inlet for the circulating liquid to enter the receiving tank is located below the filter screen, and the outlet for the circulating liquid to exit the receiving tank is located above the filter screen. The filter screen only allows the circulating liquid to pass through.

3. The collection device for flammable and explosive metal dust according to claim 2, characterized in that: The filter screen is tilted so that the circulating liquid entering the receiving tank through the inlet is directly sprayed onto the filter screen.

4. The collection device for flammable and explosive metal dust according to claim 3, characterized in that: The mesh size of the filter screen is smaller than the particle diameter of the metal dust.

5. The collection device for flammable and explosive metal dust according to claim 1, characterized in that: A one-way valve is installed at the inlet pipe of the receiving tank, and a first pneumatic butterfly valve is installed at the outlet pipe. The negative pressure generator is configured as a venturi tube, and a second pneumatic butterfly valve is installed on the pipe between it and the trap.

6. The collection device for flammable and explosive metal dust according to claim 1, characterized in that: The density of the circulating liquid is less than that of the metal dust, and it does not react chemically with the metal dust.

7. The collection device for flammable and explosive metal dust according to claim 6, characterized in that: The circulating liquid is liquid water.

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