Multi-gas-path ventilation device for superfine copper powder production

Abstract

The utility model discloses a multi-gas-path ventilation device for superfine copper powder production, relates to the technical field of superfine copper powder production, and aims to integrate a plurality of gas paths in a traditional reduction furnace ventilation device, so that the gas paths can be conveniently converted according to requirements, and the operation efficiency is improved. The device comprises a mounting plate, a ventilation unit and ventilation pipes, the ventilation pipes comprise a nitrogen ventilation pipe and a hydrogen ventilation pipe, and the ventilation unit comprises a hydrogen channel unit and a nitrogen channel unit; the hydrogen passage unit is communicated with a hydrogen breather pipe, the nitrogen passage unit is communicated with a nitrogen breather pipe, a communicating pipe is arranged between the hydrogen breather pipe and the nitrogen breather pipe, and a first valve is arranged on the communicating pipe; according to the communication structure, direct switching between the two gas paths is achieved through the first valve, and the time needed by gas path switching is remarkably shortened.

Description

Technical Field

[0001] This utility model relates to the field of ultrafine copper powder production technology, and in particular to a multi-channel ventilation device for ultrafine copper powder production. Background Technology

[0002] In high-end manufacturing fields such as electronics, new energy, and aerospace, ultrafine copper powder has become an indispensable basic material due to its excellent electrical and thermal conductivity and catalytic activity. With the continuous improvement of the performance requirements of copper powder due to industrial upgrading, the reduction method for preparing ultrafine copper powder has become the mainstream production technology due to its advantages of strong process controllability and high product purity.

[0003] However, the gas circuits of the reduction furnace gas supply devices widely used in the industry are separate, and can only be operated to introduce hydrogen or nitrogen gas separately. When the gas introduced into the reduction furnace needs to be changed, the separate gas circuit operation is extremely inconvenient and affects production efficiency.

[0004] Against this backdrop, it is necessary to develop a reduction furnace ventilation device that integrates multiple gas paths into one unit, which facilitates gas path switching and improves operating efficiency. Utility Model Content

[0005] To address the above shortcomings, this utility model provides a multi-channel ventilation device for the production of ultrafine copper powder, which can easily switch the gas channels according to needs and improve operating efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-channel ventilation device for the production of ultrafine copper powder includes a mounting plate, a ventilation unit, and a ventilation pipe. The ventilation unit is mounted on the mounting plate. The ventilation pipe includes a nitrogen ventilation pipe and a hydrogen ventilation pipe. The ventilation unit includes a hydrogen passage unit and a nitrogen passage unit. The hydrogen passage unit is connected to the hydrogen ventilation pipe, and the nitrogen passage unit is connected to the nitrogen ventilation pipe. A connecting pipe is provided between the hydrogen ventilation pipe and the nitrogen ventilation pipe, and a first valve is provided on the connecting pipe.

[0008] Preferably, there are two hydrogen passage units, which are linearly mounted on the mounting plate and connected to the hydrogen inlet pipe.

[0009] Preferably, there are three nitrogen passage units, which are linearly mounted on the mounting plate and connected to the nitrogen vent pipe.

[0010] Preferably, the nitrogen passage unit includes a first glass rotor flow meter, a first inlet pipe and a first outlet pipe. The first glass rotor flow meter is mounted on the mounting plate, the first outlet pipe is connected to the upper part of the first glass rotor flow meter, and the first inlet pipe is connected to the nitrogen passage pipe and the first glass rotor flow meter.

[0011] Preferably, the hydrogen passage unit includes a second glass rotor flow meter, a second inlet pipe and a second outlet pipe. The second glass rotor flow meter is mounted on a mounting plate, the second outlet pipe is connected to the upper part of the second glass rotor flow meter, and the second inlet pipe is connected to the hydrogen passage pipe and the second glass rotor flow meter.

[0012] Preferably, the nitrogen passage unit is further provided with a second valve, which is installed on the first air inlet pipe.

[0013] Preferably, the hydrogen passage unit is also provided with a third valve, which is installed on the second inlet pipe.

[0014] Preferably, the first valve and the second valve are painted in different colors.

[0015] Preferably, the first valve and the third valve are painted in different colors.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the device includes a mounting plate, a ventilation unit and a ventilation pipe, the ventilation pipe includes a nitrogen ventilation pipe and a hydrogen ventilation pipe, and the ventilation unit includes a hydrogen passage unit and a nitrogen passage unit.

[0017] The hydrogen passage unit is connected to a hydrogen inlet pipe, and the nitrogen passage unit is connected to a nitrogen inlet pipe. A connecting pipe is installed between the hydrogen and nitrogen inlet pipes, and a first valve is installed on the connecting pipe. This connecting structure enables direct switching between the two gas paths through the first valve, significantly reducing the time required for gas path switching. It effectively solves the problems of slow switching and chaotic layout caused by independent gas paths in traditional devices, making the overall gas control process more efficient and more compact. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a front view of the present invention;

[0021] Figure 3 This is a bottom view of the present invention;

[0022] Reference numerals in the attached diagram: 1. Nitrogen inlet pipe; 2. Hydrogen inlet pipe; 3. Mounting plate; 4. Connecting pipe; 5. First valve; 6. Nitrogen passage unit; 61. First glass rotor flow meter; 62. First inlet pipe; 63. First outlet pipe; 64. Second valve; 7. Hydrogen passage unit; 71. Second glass rotor flow meter; 72. Second inlet pipe; 73. Second outlet pipe; 74. Third valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] This utility model provides a multi-channel aeration device for the production of ultrafine copper powder, which aims to integrate multiple gas channels in the traditional reduction furnace aeration device. It can easily switch gas channels according to needs and improve operating efficiency. This design effectively solves the problems of slow switching and chaotic layout caused by independent gas channels in traditional devices, making the overall gas control process more efficient and more compact, which is conducive to improving the continuity and consistency of the ultrafine copper powder preparation process.

[0027] like Figures 1-3 As shown, the device includes a mounting plate 3, a ventilation unit and a ventilation pipe. The ventilation pipe includes a nitrogen ventilation pipe 1 and a hydrogen ventilation pipe 2. The ventilation unit includes a hydrogen passage unit 6 and a nitrogen passage unit 7.

[0028] The hydrogen passage unit 6 is connected to the hydrogen inlet pipe 2, and the nitrogen passage unit 7 is connected to the nitrogen inlet pipe 1. A connecting pipe 4 is provided between the hydrogen inlet pipe 2 and the nitrogen inlet pipe 1, and a first valve 5 is provided on the connecting pipe 4. This connecting structure realizes the direct switching between the two gas paths through the first valve 5, which significantly reduces the time required to switch gas paths.

[0029] There are three nitrogen passage units 7, which are linearly installed on the mounting plate 3 from left to right. The three nitrogen passage units 7 are connected to the nitrogen vent pipe 1. The linear arrangement not only saves installation space, but also improves the operator's identification and operation efficiency of the venting units.

[0030] Each nitrogen passage unit 7 includes a first glass rotor flowmeter 61, a first inlet pipe 62, and a first outlet pipe 63. The first glass rotor flowmeter 61 is mounted on the mounting plate 3. By setting the glass rotor flowmeter, the flow rate of nitrogen can be monitored in real time and read manually, so as to achieve precise control.

[0031] The first outlet pipe 63 is connected to the first glass rotor flowmeter 61 via a flange seal. The first inlet pipe 62 connects the hydrogen gas inlet pipe 2 and the first glass rotor flowmeter 61. The first inlet pipe 62 and the nitrogen gas inlet pipe 1 are sealed and welded together. The first inlet pipe 62 and the first glass rotor flowmeter 61 are connected via a flange seal. The flange sealing structure and welding fixing method effectively improve the airtightness and pressure resistance of the interface, and avoid process fluctuations or safety hazards caused by gas leakage.

[0032] Each nitrogen passage unit 7 is equipped with a second valve 64, which is installed on the first inlet pipe 62 to control the gas flow rate entering the glass rotor flow meter in the unit. The configuration of the second valve 64 allows each nitrogen unit to be independently adjusted to meet different ventilation needs, improve the flexibility of gas distribution, and facilitate zoned gas supply.

[0033] Two of the three nitrogen gas passage units 7 have their first gas outlet pipes 63 leading into the furnace body of the reduction furnace, while the remaining one leads into the part where the graphene heating wire is located to protect it from oxidation. The multi-point gas supply design not only ensures sufficient nitrogen coverage in the furnace body, but also provides effective oxygen isolation protection for key heating elements, reduces the performance degradation of the graphene heating wire caused by high-temperature oxidation, and improves the overall durability of the system.

[0034] There are two hydrogen passage units 6, which are linearly installed on the mounting plate 3 from right to left. The two hydrogen passage units 6 are connected to the hydrogen inlet pipe 2. This structure realizes the left and right partitioning of the nitrogen and hydrogen passages in physical space, which simplifies the pipeline laying logic, reduces operational errors, and improves the convenience of manual operation and maintenance.

[0035] Each hydrogen passage unit 6 includes a second glass rotor flowmeter 71, a second inlet pipe 72, and a second outlet pipe 73. The second glass rotor flowmeter 71 is mounted on the mounting plate 3. Setting up an independent glass rotor flowmeter can achieve accurate control of the hydrogen flow rate, thereby ensuring the stability of the hydrogen concentration in the reducing atmosphere and meeting the hydrogen flow rate requirements of the high-purity copper powder reduction reaction.

[0036] The second outlet pipe 73 is sealed to the second glass rotor flowmeter 71 via a flange. The second inlet pipe 72 connects to the hydrogen gas inlet pipe 2 and the second glass rotor flowmeter 71. The second inlet pipe 72 and the hydrogen gas inlet pipe 2 are sealed and welded together. The second inlet pipe 72 and the second glass rotor flowmeter 71 are sealed and connected together via a flange. The sealing and welding and flange connection improve the overall safety level of the hydrogen passage, reduce the risk of gas leakage, and are suitable for hydrogen, a special gas with high flammability.

[0037] Each hydrogen passage unit 6 is equipped with a third valve 74, which is installed on the second inlet pipe 72 to control the gas flow rate entering the glass rotor flow meter in the unit. The third valve 74 can flexibly adjust the hydrogen supply rate according to the actual process conditions, realize continuous adjustment from micro to large flow, and improve the system's ability to cope with complex reduction conditions.

[0038] The second outlet pipe 73 in both hydrogen passage units 6 is connected to the furnace body of the reduction furnace; this arrangement ensures that the reducing gas forms a uniform gas distribution in the furnace body, which is beneficial to maintaining a stable reduction environment temperature and reaction rate.

[0039] To prevent incorrect valve operation, valves 5 (first valve), 64 (second valve), and 74 (third valve) are painted in different colors. Color coding distinguishes valves with different functions, improving the identification efficiency and operational safety of on-site operators. This reduces the probability of misoperation, especially in scenarios with tight production schedules or frequent ventilation, ensuring stable and reliable equipment operation.

[0040] With this setup, two hydrogen gas inlet pipes and one nitrogen gas inlet pipe are integrated together, and the gas switching can be easily achieved through the control of the first valve 5. The integrated structure significantly simplifies the system complexity of traditional gas switching devices, optimizes the gas path allocation method, and improves the automation level and control accuracy of the overall device.

[0041] Simultaneously, in conjunction with the second valve 64 and the third valve 74, the flow of nitrogen for protection or hydrogen for reduction can be adjusted at any time according to the needs or changes in the products inside the reduction furnace. This control mechanism achieves rapid response and precise matching of the atmosphere inside the furnace, enhances the adaptability to the reaction requirements of ultrafine copper powder at different stages, and improves the consistency of the reduction process and the performance stability of the final product.

[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A multi-channel ventilation device for the production of ultrafine copper powder, comprising a mounting plate (3), a ventilation unit, and a ventilation pipe, wherein the ventilation unit is mounted on the mounting plate (3), characterized in that: The ventilation pipe includes a nitrogen ventilation pipe (1) and a hydrogen ventilation pipe (2). The ventilation unit includes a hydrogen passage unit (6) and a nitrogen passage unit (7). The hydrogen passage unit (6) is connected to the hydrogen ventilation pipe (2), and the nitrogen passage unit (7) is connected to the nitrogen ventilation pipe (1). A connecting pipe (4) is provided between the hydrogen ventilation pipe (2) and the nitrogen ventilation pipe (1). A first valve (5) is provided on the connecting pipe (4).

2. The multi-channel ventilation device for producing ultrafine copper powder according to claim 1, characterized in that: There are two hydrogen passage units (6), which are linearly installed on the mounting plate (3) and connected to the hydrogen inlet pipe (2).

3. The multi-channel ventilation device for producing ultrafine copper powder according to claim 1, characterized in that: There are three nitrogen passage units (7), which are linearly installed on the mounting plate (3) and connected to the nitrogen vent pipe (1).

4. The multi-channel ventilation device for producing ultrafine copper powder according to claim 2, characterized in that: The nitrogen passage unit (7) includes a first glass rotor flowmeter (61), a first inlet pipe (62) and a first outlet pipe (63). The first glass rotor flowmeter (61) is mounted on the mounting plate (3). The first outlet pipe (63) is connected to the upper part of the first glass rotor flowmeter (61). The first inlet pipe (62) is connected to the nitrogen passage pipe (1) and the first glass rotor flowmeter (61).

5. A multi-channel ventilation device for producing ultrafine copper powder according to claim 3, characterized in that: The hydrogen passage unit (6) includes a second glass rotor flow meter (71), a second inlet pipe (72), and a second outlet pipe (73). The second glass rotor flow meter (71) is mounted on the mounting plate (3). The second outlet pipe (73) is connected to the upper part of the second glass rotor flow meter (71). The second inlet pipe (72) is connected to the hydrogen gas passage pipe (2) and the second glass rotor flow meter (71).

6. The multi-channel ventilation device for producing ultrafine copper powder according to claim 4, characterized in that: The nitrogen passage unit (7) is also provided with a second valve (64), which is installed on the first air inlet pipe (62).

7. A multi-channel ventilation device for producing ultrafine copper powder according to claim 5, characterized in that: The hydrogen passage unit (6) is also provided with a third valve (74), which is installed on the second inlet pipe (72).

8. A multi-channel ventilation device for producing ultrafine copper powder according to claim 6, characterized in that: The first valve (5) and the second valve (64) are painted with different colors.

9. A multi-channel ventilation device for producing ultrafine copper powder according to claim 7, characterized in that: The first valve (5) and the third valve (74) are painted in different colors.

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