Vacuum suction filtration and dehydration device for metal powder

Abstract

The utility model relates to a vacuum suction filtration dehydration device for metal powder. The vacuum suction filtration dehydration device comprises a dehydration tank and a stock bin arranged on one side of the dehydration tank, the top of the dehydration tank is provided with a feed port connected with the atomization tank, and the bottom of the dehydration tank is provided with a drain pipe; a material bin is arranged in the dewatering tank, a screen inclining downwards is arranged in the material bin, the lower end of the screen extends to the outside of the dewatering tank and is located above the material bin, a scraping plate perpendicular to the screen is arranged on the upper portion of the screen, the scraping plate is connected with a driving mechanism, and the driving mechanism is used for driving the scraping plate to move in the extending direction of the screen; a discharge port is formed in the side wall, close to the stock bin, of the dewatering tank, the discharge port is located above the screen, and a negative pressure device is further connected to the side wall of the dewatering tank. According to the double-cone dryer, the dehydration tank is arranged, metal powder is subjected to preliminary dehydration treatment, semi-dry metal powder is obtained and then dried, the drying pressure of the double-cone dryer is relieved, and the drying efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of atomized metal powders, and particularly relates to a metal powder vacuum suction filtration and dehydration device. Background Art

[0002] The powder metallurgy industry generally uses water atomization to produce powder. At present, after the ultra-high pressure water vapor combined atomization is completed in the atomizing tank, the metal powder is generally collected in the transfer tank, and then transferred to the double cone dryer for drying to remove the moisture in the metal powder and obtain dry metal powder. In actual production, the drying efficiency of the double cone dryer is lower than the powder making efficiency of the atomizing tank. The double cone dryer cannot adapt to the powder making rate of the atomizing tank. In order to improve production efficiency, a dehydration and drying device is urgently needed. Utility Model Content

[0003] The utility model aims to provide a metal powder vacuum suction filtration dehydration device to solve the technical problems raised in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A metal powder vacuum suction filtration dehydration device, comprising: a dehydration tank and a silo arranged on one side of the dehydration tank;

[0006] The top of the dehydration tank is provided with a feed port for connecting to the atomization tank, and the bottom is provided with a drain pipe; a downwardly inclined screen is provided inside, and the lower end of the screen extends to the outside of the dehydration tank and is located above the silo, and a scraper is provided on the upper part of the screen and is vertically arranged with the screen, and the scraper is connected to a driving mechanism, and the driving mechanism is used to drive the scraper to move along the extension direction of the screen; a discharge port is provided on the side wall of the dehydration tank close to the silo, and the discharge port is located above the screen, and a negative pressure device is also connected to the side wall of the dehydration tank.

[0007] As a further improvement of the utility model, a sealing cover corresponding to the discharge port is provided on the side wall of the dehydration tank.

[0008] As a further improvement of the utility model, a valve 1 is provided on the feed inlet, and a valve 2 is provided on the drain pipe.

[0009] As a further improvement of the utility model, the driving mechanism is cylinder 1, which is connected to the side wall of the dehydration tank away from the silo through a mounting seat, and its output shaft is connected to the middle part of the scraper, and the axis of the output shaft is parallel to the screen.

[0010] As a further improvement of the utility model, the cross section of the lower part of the dehydration tank is in a tapered shape that is wider at the top and narrower at the bottom, and the drainage pipe is provided on the narrow end.

[0011] As a further improvement of the utility model, a blower mechanism is further provided inside the dehydration tank, and the blower mechanism is used to provide wind force to blow back the metal powder remaining on the screen to prevent the screen from being blocked.

[0012] As a further improvement of the utility model, the blower mechanism includes a cylinder 2 and a blower arranged below the screen; the cylinder 2 is connected to the outer wall of the dehydration tank through a mounting seat, and its output shaft is connected to the blower, and the axis of the output shaft is parallel to the screen; the air outlet of the blower is upward and opposite to the screen.

[0013] As a further improvement of the utility model, a handle is provided on the sealing cover.

[0014] The beneficial effects of adopting the above technical solution are:

[0015] The utility model is provided with a dehydration tank to perform preliminary dehydration treatment on the metal powder, discharge most of the water in the atomized metal powder, obtain semi-dried metal powder and then dry it, thereby reducing the drying pressure of the double-cone dryer and improving the drying efficiency; and the silo has the function of collecting the metal powder, further making the drying efficiency of the double-cone dryer compatible with the powder making efficiency of the atomization tank, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Explanation of marks in the figure: 1 dehydration tank, 2 silo, 3 feed port, 4 drain pipe, 5 screen, 6 scraper, 7 negative pressure device, 8 sealing cover, 9 valve one, 10 valve two, 11 cylinder one, 12 cylinder two, 13 blower, 14 handle, 15 atomizer tank. DETAILED DESCRIPTION

[0018] In order to better understand the purpose, structure and function of the present invention, the present invention is described clearly and completely below in conjunction with the accompanying drawings.

[0019] like Figure 1A vacuum suction filtration dehydration device for metal powder is shown, which comprises: a dehydration tank 1 and a silo 2 arranged on one side of the dehydration tank 1; a feed port 3 for connecting to an atomization tank 15 is arranged on the top of the dehydration tank 1, and a drain pipe 4 is arranged on the bottom; and a valve 1 9 is arranged on the feed port 3, and a valve 2 10 is arranged on the drain pipe 4, which are used to control the material in the atomization tank 15 to enter the dehydration tank 1 and control the discharge of water in the dehydration tank 1. The drain pipe 4 can be connected to a sewage circulation system to treat the discharged water and save water resources; in order to facilitate the discharge of all the water in the dehydration tank 1 from the drain pipe 4, the cross-section of the lower part of the dehydration tank 1 is a cone with a wide top and a narrow bottom, and the drain pipe 4 is arranged on the narrow end, and the water flows downward along the conical side wall and is discharged from the drain pipe 4.

[0020] A discharge port is provided on the side wall of the dehydration tank 1 near the silo 2 to discharge the metal powder after a certain amount of water is removed. A negative pressure device 7 is also connected to the side wall of the dehydration tank 1 to perform vacuum treatment in the dehydration tank 1. The negative pressure device 7 is not specifically limited and any negative pressure device 7 available on the market can be used, such as an exhaust fan. In order to form and maintain a negative pressure state in the dehydration tank 1, a sealing cover 8 corresponding to the discharge port is provided on the side wall of the dehydration tank 1 to seal the discharge port to prevent the dehydration tank 1 from being balanced with the external atmospheric pressure; specifically, the upper part of the sealing cover 8 is rotatably connected to the outer wall of the dehydration tank 1 by a hinge, and the sealing cover 8 can only be rotated in a direction away from the dehydration tank 1, and a sealing gasket is provided on the other side walls; in addition, a handle 14 is also provided on the sealing cover 8.

[0021] The interior of the dehydration tank 1 is provided with a downwardly inclined screen 5, which is a high-density metal screen 5 that does not allow metal powder to pass through, and the lower end of the screen 5 extends to the outside of the dehydration tank 1 and is located above the silo 2, corresponding to the inlet of the silo 2; the outlet is located above the screen 5, and the upper part of the screen 5 is provided with a scraper 6 vertically arranged with the screen 5, which is used to scrape the metal powder on the upper part of the screen 5 to the outlet and discharge it into the silo 2 for collection, and the scraper 6 is connected to a driving mechanism, and the driving mechanism is used to drive the scraper 6 to move along the extension direction of the screen 5. The utility model does not specifically limit the specific structural form of the driving mechanism, and only needs to complete the driving of the scraper 6 to move along the direction of the screen 5. This embodiment proposes a feasible method, the driving mechanism is a cylinder 11, the cylinder 11 is connected to the side wall of the dehydration tank 1 away from the silo 2 through a mounting seat, and its output shaft is connected to the middle part of the scraper 6, and the axis of the output shaft is parallel to the screen 5.

[0022] The working principle is as follows: at the end of the atomization spraying of the atomizing tank 15, the negative pressure device 7 is first opened to perform vacuum pretreatment on the inside of the dehydration tank 1; after the atomization is completed, the valve 9 is opened to discharge the water and the water-containing metal powder in the atomizing tank 15, and the water passes through the high-density screen 5 placed obliquely under the negative pressure, and the metal powder remains under the screen 5, so as to achieve the purpose of rapid dehydration; then the driving mechanism drives the scraper 6 to squeeze and scrape the powder from the high end to the low end of the screen 5 at a certain frequency, and the metal powder is scraped into the silo 2; then the semi-dried powder in the silo 2 is transported to the mixing silo 2, and then transported to the double cone dryer for further drying, and the water is discharged by the drain pipe 4. This device discharges most of the water in the atomized metal powder, obtains the semi-dried metal powder and then dries it, which reduces the drying pressure of the double cone dryer and improves the drying efficiency; and the silo 2 has the function of collecting metal powder, which further makes the drying efficiency of the double cone dryer compatible with the powder making efficiency of the atomizing tank 15.

[0023] In addition, a blower 13 is provided inside the dehydration tank 1, and the blower 13 is used to provide wind to blow back the metal powder remaining on the screen 5 to prevent the screen 5 from being blocked. Specifically, the blower 13 includes a cylinder 2 12 and a blower 13 arranged below the screen 5; the cylinder 2 12 is connected to the outer wall of the dehydration tank 1 through a mounting seat, and its output shaft is connected to the blower 13, and the axis of the output shaft is parallel to the screen 5; the air outlet of the blower 13 is upward and opposite to the screen 5. After the collection of the silo 2 is completed, the cylinder 2 12 and the blower 13 are turned on to blow back the screen 5 to maintain the screen 5 to avoid blockage of the screen 5 and facilitate the next dehydration use.

[0024] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A metal powder vacuum filtration dehydration device, characterized in that: It includes: A dehydration tank (1) and a silo (2) arranged on one side of the dehydration tank (1); The top of the dehydration tank (1) is provided with a feed port (3) for connecting to an atomization tank (15), and the bottom is provided with a drain pipe (4); a downwardly inclined screen (5) is provided inside, and the lower end of the screen (5) extends to the outside of the dehydration tank (1) and is located above the silo (2); a scraper (6) is provided on the upper part of the screen (5) and is vertically arranged with the screen (5); the scraper (6) is connected to a driving mechanism, and the driving mechanism is used to drive the scraper (6) to move along the extension direction of the screen (5); a discharge port is provided on the side wall of the dehydration tank (1) close to the silo (2), and the discharge port is located above the screen (5); and a negative pressure device (7) is also connected to the side wall of the dehydration tank (1).

2. A metal powder vacuum filtration dehydration device according to claim 1, characterized in that: A sealing cover (8) corresponding to the discharge port is provided on the side wall of the dehydration tank (1).

3. The metal powder vacuum filtration and dehydration device according to claim 1, characterized in that: The feed port (3) is provided with a valve one (9), and the drain pipe (4) is provided with a valve two (10).

4. The metal powder vacuum filtration dehydration device according to claim 1, characterized in that: The driving mechanism is a cylinder 1 (11), which is connected to the side wall of the dehydration tank (1) away from the silo (2) through a mounting seat, and its output shaft is connected to the middle part of the scraper (6), and the axis of the output shaft is parallel to the screen (5).

5. The metal powder vacuum filtration dehydration device according to claim 1, characterized in that: The cross section of the lower part of the dehydration tank (1) is in the shape of a cone, which is wide at the top and narrow at the bottom, and the drainage pipe (4) is provided at the narrow end.

6. The metal powder vacuum filtration dehydration device according to claim 1, characterized in that: A blower (13) is also provided inside the dehydration tank (1), and the blower (13) is used to provide wind force to blow back the metal powder remaining on the screen (5) to prevent the screen (5) from being blocked.

7. A metal powder vacuum filtration dehydration device according to claim 6, characterized in that: The blower (13) comprises a second cylinder (12) and a blower (13) arranged below the screen (5); the second cylinder (12) is connected to the outer wall of the dehydration tank (1) via a mounting seat, and its output shaft is connected to the blower (13), and the axis of the output shaft is parallel to the screen (5); the air outlet of the blower (13) is upward and opposite to the screen (5).

8. The metal powder vacuum filtration dehydration device according to claim 2, characterized in that: The sealing cover (8) is provided with a handle (14).

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