Water atomization copper powder drying machine with vacuum suck-back prevention function

Abstract

The utility model relates to the technical field of metal powder preparation, in particular to a water atomization copper powder drying machine with a vacuum anti-suck-back function, which comprises a base, a driving device is arranged at the left end of the base, and a drying cylinder is fixedly mounted at the output end of the driving device. The nanometer filter cloth sleeve can block copper powder dust particles, the suck-back risk caused by blocking is avoided, and when the vacuum device operates, the linear opening of the rubber film is opened through vacuum negative pressure so that air can be exhausted; during shutdown, negative pressure disappears, the linear opening of the rubber film is closed, the semi-arc design and the linear opening of the rubber film allow smooth circulation of gas, a pipeline is physically isolated after closing, evaporated water vapor or copper powder particles are effectively prevented from being sucked back into a vacuum suction hood and a guide pipe, and therefore pipeline blockage or corrosion caused by a vacuum pump is avoided; the service life of a vacuum system is prolonged, and meanwhile, the copper powder drying quality and the equipment operation safety are ensured.

Description

Technical Field

[0001] This utility model relates to the field of metal powder preparation technology, specifically a water atomization copper powder dryer with vacuum anti-backflow function. Background Technology

[0002] Electrolytic copper powder, as an important metallic powder material, has wide applications in electronics, metallurgy, and chemical industries. In its preparation process, the drying step is crucial for ensuring powder particle size uniformity and chemical stability. Currently, the industry commonly employs vacuum drying technology, which accelerates moisture evaporation through a negative pressure environment to improve drying efficiency.

[0003] Traditional vacuum drying equipment is prone to backflow of moisture and ultrafine copper powder into the vacuum pipeline during the vacuuming and drying process, leading to pipeline blockage or equipment corrosion. Moisture entering the vacuum pump also causes corrosion, shortening the equipment's lifespan. Therefore, we propose a water-atomized copper powder dryer with a vacuum anti-backflow function. Utility Model Content

[0004] The purpose of this utility model is to provide a water atomization copper powder dryer with vacuum anti-backflow function. This water atomization copper powder dryer with vacuum anti-backflow function solves the problems of water vapor and ultrafine copper powder being sucked back into the vacuum pipeline, causing pipeline blockage or equipment corrosion.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A water-atomized copper powder dryer with vacuum anti-backflow function includes a base, a drive device at the left end of the base, a drying cylinder fixedly installed at the output end of the drive device, a feed inlet at the top of the drying cylinder, a discharge outlet at the bottom of the drying cylinder, a guide tube rotatably installed on the inner wall of the drive device, a vacuum suction hood fixedly installed at the end of the guide tube near the inner wall of the drying cylinder, a vacuum device installed at the end of the guide tube away from the drying cylinder, a heating body rotatably installed at the right end of the drying cylinder, and an anti-backflow device installed inside the drying cylinder. The anti-backflow device includes a connecting rod, a dust hood, a nanofiber filter cloth sleeve, a mounting frame, and a rubber film. The connecting rod is fixedly installed at the top of the vacuum suction hood, the dust hood is fixedly installed at the bottom of the connecting rod, the nanofiber filter cloth sleeve is installed on the outer wall of the vacuum suction hood, the mounting frame is fixedly installed on the inner wall at the connection between the guide tube and the vacuum suction hood, and the rubber film is fixedly installed on the inner wall of the mounting frame.

[0007] Preferably, the rubber film is semi-circular in shape, and the surface of the rubber film has linear openings.

[0008] Preferably, the anti-backflow device further includes a baffle, a long rod, an outer abutment plate, an inner abutment plate, and a spring. The baffle is slidably installed on the inner wall of the guide tube near the vacuum suction hood. The long rod is fixedly installed on the top of the baffle. The outer abutment plate is fixedly installed on the top of the long rod. The inner abutment plate is fixedly installed on the outer wall of the long rod near the bottom surface of the rubber film. The spring is fixedly installed on the bottom surface of the baffle.

[0009] Preferably, the long rod is slidably mounted through and on the inner wall of the linear opening of the rubber film, and the spring is disposed between the baffle and the inner wall of the conduit.

[0010] By employing the above technical solution, this utility model provides a water-atomized copper powder dryer with vacuum anti-backflow function. It possesses at least the following beneficial effects:

[0011] (1) By setting up a nano filter cloth sleeve and a rubber film, the nano filter cloth sleeve 23 can block copper powder dust particles and avoid the risk of backflow caused by blockage. The rubber film 25 can prevent the water vapor evaporated during the drying process from entering the vacuum suction hood 151 and then flowing into the conduit 15 through the vacuum suction hood 151. This effectively prevents the backflow of evaporated water vapor or copper powder particles into the vacuum suction hood 151 and the conduit 15, thereby avoiding pipeline blockage or corrosion of the vacuum pump, improving the service life of the vacuum system, and ensuring the quality of copper powder drying and the safe operation of the equipment.

[0012] (2) By setting the baffle 26, and in conjunction with the long rod 27, the outer abutment plate 28 and the inner abutment plate 29, the inner abutment plate 29 applies an upward pressure to the rubber film 25, which helps it overcome the deformation caused by suction and achieves rapid and effective rebound. This maintains the elasticity and semi-circular arc state of the rubber film 25 for a long time, ensuring the continuous stability and high efficiency of the anti-backflow function. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0014] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the anti-backflow device in Embodiment 1;

[0017] Figure 4 This is an enlarged schematic diagram of point A in this embodiment 2.

[0018] In the diagram: 1. Base; 11. Drive unit; 12. Drying cylinder; 13. Feed inlet; 14. Discharge outlet; 15. Guide tube; 151. Vacuum suction hood; 16. Vacuum device; 17. Heating body; 2. Anti-backflow device; 21. Connecting rod; 22. Dust hood; 23. Nanofiber filter cloth sleeve; 24. Mounting frame; 25. Rubber film; 26. Baffle; 27. Long rod; 28. Outer abutment plate; 29. ​​Inner abutment plate; 210. Spring. Detailed Implementation

[0019] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] A water-atomized copper powder dryer with vacuum anti-backflow function, such as Figures 1-3 As shown, the device includes a base 1, a drive unit 11 at the left end of the base 1, a drying cylinder 12 fixedly mounted at the output end of the drive unit 11, a feed inlet 13 at the top of the drying cylinder 12, a discharge outlet 14 at the bottom of the drying cylinder 12, a guide tube 15 rotatably mounted on the inner wall of the drive unit 11, a vacuum suction hood 151 fixedly mounted at one end of the guide tube 15 near the inner wall of the drying cylinder 12, a vacuum device 16 at the other end of the guide tube 15 away from the drying cylinder 12, and a heating body 1 rotatably mounted on the right end of the drying cylinder 12. 7. The drying cylinder 12 is equipped with an anti-backflow device 2. The anti-backflow device 2 includes a connecting rod 21, a dust cover 22, a nano filter cloth sleeve 23, a mounting frame 24, and a rubber film 25. The connecting rod 21 is fixedly installed at the top of the vacuum suction hood 151, the dust cover 22 is fixedly installed at the bottom of the connecting rod 21, the nano filter cloth sleeve 23 is set on the outer wall of the vacuum suction hood 151, the mounting frame 24 is fixedly installed on the inner wall at the connection between the guide tube 15 and the vacuum suction hood 151, and the rubber film 25 is fixedly installed on the inner wall of the mounting frame 24.

[0021] The rubber film 25 is semi-circular in shape, and the surface of the rubber film 25 has linear openings.

[0022] This utility model discloses a water-atomized copper powder dryer with a vacuum anti-backflow function. In operation, copper powder is poured into the drying cylinder 12 through the feed inlet 13, the feed inlet 13 is closed, and the vacuum device 16 is activated. The vacuum device 16 applies negative pressure, and a vacuum is applied to the inside of the drying cylinder 12 through the conduit 15 and the vacuum suction hood 151. The drive device 11 is then activated, causing the drying cylinder 12 to rotate, facilitating rapid drying of the copper powder. After vacuum drying is complete, the dried copper powder is discharged through the discharge port 14. The nano-filter cloth sleeve 23 effectively blocks copper powder dust particles, preventing blockage and the risk of backflow. When the vacuum device 16 is running, the negative vacuum causes the linear opening of the rubber film 25 to open for air extraction. The semi-circular arc design and linear opening of the rubber film 25... The system allows for smooth gas flow. When the machine stops, the negative pressure disappears, and the linear opening of the rubber membrane 25 closes, physically isolating the pipeline. At the same time, the heating body 17 and the drive device 11 are turned on. The drive device 11 rotates the drying cylinder 12, and the heating body 17 heats the inner wall of the drying cylinder 12. Due to the mesh gaps of the nanofiber filter cloth sleeve 23, the evaporated water vapor will remain on the surface of the nanofiber filter cloth sleeve 23, causing the water vapor to flow into the vacuum hood 151. Meanwhile, the linear opening of the rubber membrane 25 closes, physically isolating the pipeline, effectively preventing the backflow of evaporated water vapor or copper powder particles into the vacuum hood 151 and the conduit 15, thereby avoiding pipeline blockage or corrosion of the vacuum pump, improving the service life of the vacuum system, and ensuring the quality of copper powder drying and the safe operation of the equipment. Example

[0023] This embodiment, based on embodiment 1, specifically includes the following:

[0024] like Figure 4 As shown, the anti-backflow device 2 also includes a baffle 26, a long rod 27, an outer abutment plate 28, an inner abutment plate 29, and a spring 210. The baffle 26 is slidably installed on the inner wall of the guide tube 15 near the vacuum suction hood 151. The long rod 27 is fixedly installed on the top of the baffle 26. The outer abutment plate 28 is fixedly installed on the top of the long rod 27. The inner abutment plate 29 is fixedly installed on the outer wall of the long rod 27 near the bottom surface of the rubber film 25. The spring 210 is fixedly installed on the bottom surface of the baffle 26.

[0025] The long rod 27 is inserted through and slidably installed on the inner wall of the linear opening of the rubber film 25, and the spring 210 is disposed between the baffle 26 and the inner wall of the guide tube 15.

[0026] In use, the vacuum dryer for water-atomized copper powder with vacuum anti-backflow function operates by using a vacuum dryer where the negative pressure causes the baffle 26 to move downwards, thus performing a vacuum operation inside. After the vacuuming process ends, the spring 210 at the bottom of the baffle 26 allows it to quickly return to its original position. The baffle 26 then moves the long rod 27 upwards, which in turn moves the outer abutment 28 and the inner abutment 29 upwards. The inner abutment 29 applies an upward pressure to the rubber film 25, helping it overcome the deformation caused by suction and achieving rapid and effective rebound. This maintains the elasticity and semi-circular shape of the rubber film 25 for a long time, ensuring the continuous stability and high efficiency of the anti-backflow function.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water atomized copper powder dryer with vacuum anti-suckback function, comprising a base (1), characterized in that: A drive device (11) is provided at the left end of the base (1). A drying cylinder (12) is fixedly installed at the output end of the drive device (11). A feed inlet (13) is provided at the top of the drying cylinder (12), and a discharge outlet (14) is provided at the bottom of the drying cylinder (12). A guide tube (15) is rotatably installed on the inner wall of the drive device (11). A vacuum suction hood (151) is fixedly installed at one end of the guide tube (15) near the inner wall of the drying cylinder (12), and a vacuum device (16) is provided at the other end of the guide tube (15) away from the drying cylinder (12). A heating body (17) is rotatably installed at the right end of the drying cylinder (12). The drying cylinder (12) is equipped with an anti-backflow device (2). The anti-backflow device (2) includes a connecting rod (21), a dust cover (22), a nano filter cloth sleeve (23), a mounting frame (24), and a rubber film (25). The connecting rod (21) is fixedly installed at the top of the vacuum suction hood (151), the dust cover (22) is fixedly installed at the bottom of the connecting rod (21), the nano filter cloth sleeve (23) is set on the outer wall of the vacuum suction hood (151), the mounting frame (24) is fixedly installed on the inner wall at the connection between the conduit (15) and the vacuum suction hood (151), and the rubber film (25) is fixedly installed on the inner wall of the mounting frame (24).

2. The water atomizing copper powder dryer with vacuum anti-suckback function according to claim 1, characterized in that: The rubber film (25) is semi-circular and has linear openings on its surface.

3. The water atomizing copper powder drier with vacuum anti-suckback function according to claim 2, characterized in that: The anti-backflow device (2) further includes a baffle (26), a long rod (27), an outer abutment (28), an inner abutment (29), and a spring (210). The baffle (26) is slidably installed on the inner wall of the guide tube (15) near the vacuum suction hood (151). The long rod (27) is fixedly installed on the top of the baffle (26). The outer abutment (28) is fixedly installed on the top of the long rod (27). The inner abutment (29) is fixedly installed on the outer wall of the long rod (27) near the bottom surface of the rubber film (25). The spring (210) is fixedly installed on the bottom surface of the baffle (26).

4. The water atomizing copper powder drier with vacuum anti-suckback function according to claim 3, characterized in that: The long rod (27) is inserted through and slidably mounted on the inner wall of the linear opening of the rubber film (25), and the spring (210) is disposed between the baffle (26) and the inner wall of the guide tube (15).

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