Automatic grading device for water atomization production

Abstract

The utility model relates to an automatic grading device for water atomization production, which comprises a centrifugal machine, the centrifugal machine comprises a shell, a centrifugal disc and a screening baffle, and metal powder particles with different particle sizes are automatically screened into a first cavity, a second cavity and a fourth cavity respectively through a first-stage screen hole and a second-stage screen hole. Three metal powder particles with different particle sizes are collected through a first industrial dust collector, a second industrial dust collector and a third industrial dust collector, so that the next screening work can be carried out; remaining metal powder particles are intercepted through third-stage sieve holes, and water is thrown into a fourth cavity due to centrifugal force and flows away along with a water outlet pipe, so that the metal powder particles are dehydrated; and the subsequent drying efficiency of the dehydrated metal powder particles is higher, and energy for heating and drying is also saved. And as the screened metal powder particles are in a wet environment, flying dust caused by screening of the metal powder particles is avoided.

Description

Technical Field

[0001] The utility model relates to an automatic grading device used for water atomization production. Background Art

[0002] In the particle metallurgy industry, water atomization is a traditional process for making metal powder particles. The high-pressure water atomization method is used to make crude alloy particles. First, the crude gold is melted in a furnace. The molten gold must be superheated by about 50 degrees and then injected into the tundish. Before the gold liquid is injected, the high-pressure water pump is started to start the high-pressure water atomization device. The gold liquid in the tundish passes through the beam and enters the atomizer through the nozzle at the bottom of the tundish. Under the action of high-pressure water from the atomizer, the gold liquid is continuously broken into fine droplets, falls into the coolant in the device, and quickly solidifies into alloy particles. After that, the metal powder particles will be dehydrated, dried, reduced and other steps to finally be made into finished products. The particle size is an important indicator for measuring metal powder particles. The existing water atomization method for making metal powder particles usually uses a circulating screening system to classify the metal powder particles after the drying process. However, the circulating screening system occupies a large space and has a high cost. In addition, when the powder is classified, dust will be generated due to the drying of the powder, so the loss rate is high.

[0003] In the prior art, a patent with application number 202020597719.9 discloses a metal powder particle grinding and wind screening device, including a barrel body, a feed pipe is arranged in the barrel body, a through hole for metal powder particles to pass through is arranged on the base, a partition is arranged on the top of the barrel body, the partition is connected to the through hole, a discharge pipe is connected in the partition, and a discharge port is arranged at the bottom of the barrel body. Under the action of air pressure, metal powder particles of different fineness move upward along with the feed port, pass through the through hole and the partition, and leave from the discharge pipe, thereby realizing the screening of metal powder particles of different fineness.

[0004] The prior art uses wind screening, which can only screen dry powder and cannot perform multi-stage screening at the same time, and cannot meet the screening requirements of metal powder particles manufactured by water atomization method. Utility Model Content

[0005] The purpose of the embodiment of the utility model is to provide an automatic grading device for water atomization production, which can screen and dehydrate metal powder particles before drying, so as to solve the problem that the prior art can only screen dry powder and cannot perform multi-stage screening at the same time.

[0006] In order to solve the above technical problems, the utility model provides an automatic grading device for water atomization production, including a centrifuge, wherein the centrifuge includes a shell, a centrifugal disc and a screening baffle, the centrifugal disc is rotatably connected to the centrifuge, at least two levels of screening baffles are installed on the centrifugal disc, sieve holes are arranged on the screening baffle, the sieve hole diameter of the screening baffle close to the center of the centrifugal disc is larger than the sieve hole diameter of the screening baffle far from the center of the centrifugal disc, the shell is arranged on the outside of the screening baffle, a feed port is arranged on the upper side of the screening baffle, and a matching screening baffle cover is provided on the feed port.

[0007] The screening baffles are of three levels, namely, first-level screening baffles, second-level screening baffles and third-level screening baffles. Each level of screening baffles is distributed in an annular manner on the centrifugal disk. The center of the screening baffle is coaxial with the centrifugal disk. The first-level screening baffles, the second-level screening baffles and the third-level screening baffles are respectively provided with first-level sieve holes, second-level sieve holes and third-level sieve holes. A first cavity is provided on the inner side of the first-level screening baffle, a second cavity is provided between the first-level screening baffle and the second-level screening baffle, a third cavity is provided between the second-level screening baffle and the third-level screening baffle, and a fourth cavity is provided between the third-level screening baffle and the outer shell.

[0008] The first-stage sieve aperture is 170-250 mesh; the second-stage sieve aperture is 270-400 mesh; the third-stage sieve aperture is greater than or equal to 600 mesh.

[0009] The first-stage sieve aperture, the second-stage sieve aperture and the third-stage sieve aperture are 200 mesh, 325 mesh and 600 mesh respectively.

[0010] The screening baffle cover includes a first interface, a second interface and a third interface. The first interface is buckled on the feed port, the second interface is buckled on the upper end of the second-stage screening baffle, and the third interface is buckled on the upper end of the third-stage screening baffle. The third interface is fixed to the third-stage screening baffle by anti-detachment bolts.

[0011] The shell is provided with a shell cover.

[0012] The bottom of the shell is communicated with the water outlet pipe.

[0013] The first cavity is connected to the first-level discharge pipe, which is connected to the first industrial vacuum cleaner; the second cavity is connected to the second-level discharge pipe, which is connected to the second industrial vacuum cleaner; the third cavity is connected to the third-level discharge pipe, which is connected to the third industrial vacuum cleaner.

[0014] Beneficial effects of the utility model:

[0015] The utility model automatically screens metal powder particles of different particle sizes into the first cavity, the second cavity and the fourth cavity through the first-stage sieve holes and the second-stage sieve holes, and collects the metal powder particles of three different particle sizes through the first industrial vacuum cleaner, the second industrial vacuum cleaner and the third industrial vacuum cleaner for the next screening work; the remaining metal powder particles are intercepted by the third-stage sieve holes, and the water is thrown into the fourth cavity due to the centrifugal force, and the water flows away with the water outlet pipe, so that the metal powder particles are dehydrated; the subsequent drying efficiency of the dehydrated metal powder particles is higher, and the energy of heating and drying is also saved. Since the screened metal powder particles are in a humid environment, dust is avoided from the screening of metal powder particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 It is the AA cross-sectional view of the utility model;

[0018] Figure 2 It is the front view of the utility model;

[0019] Figure 3 It is a top view of the utility model without a screening baffle cover.

[0020] In the figure: 1-feed port, 2-first stage screening baffle, 3-second stage screening baffle, 4-third stage screening baffle, 5-centrifuge, 6-water outlet pipe, 7-housing, 8-first stage sieve hole, 9-second stage sieve hole, 10-third stage sieve hole, 11-first interface, 12-second interface, 13-third interface, 14-centrifugal disc, 15-anti-slip bolt, 16-screening baffle cover, 17-housing cover, 18-first cavity, 19-second cavity, 20-third cavity, 21-fourth cavity. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, each embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. However, it can be understood by those skilled in the art that in each embodiment of the utility model, many technical details are proposed in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and should not constitute any limitation on the specific implementation of the utility model. The various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0022] like Figures 1 to 3 An automatic grading device for water atomization production shown in the figure comprises a centrifuge 5, wherein the centrifuge 5 comprises a housing 7, a centrifugal disc 14 and a screening baffle, wherein the centrifugal disc 14 is rotatably connected to the centrifuge 5, wherein the screening baffles are of three levels, namely, a first-level screening baffle 2, a second-level screening baffle 3 and a third-level screening baffle 4, wherein the three-level screening baffles are all cylindrical and their diameters increase successively, wherein the three-level screening baffles are coaxially sleeved and fixed on the centrifugal disc 14 in sequence, and are coaxially arranged with the centrifugal disc 14, wherein the first-level screening baffle 2, the second-level screening baffle 3 and the third-level screening baffle 4 are respectively provided with a first-level sieve hole 8, a second-level sieve hole 9 and a third-level sieve hole 10, wherein the first-level sieve hole 8, the second-level sieve hole 9 and the third-level sieve hole 10 are 200 mesh, 325 mesh and 600 mesh, respectively.

[0023] A first cavity 18 is provided on the inner side of the first-stage screening baffle 2, a second cavity 19 is provided between the first-stage screening baffle 2 and the second-stage screening baffle 3, a third cavity 20 is provided between the second-stage screening baffle 3 and the third-stage screening baffle 4, and a fourth cavity 21 is provided between the third-stage screening baffle 4 and the outer shell 7; after screening, metal powder particles of different particle sizes are respectively collected in the first cavity 18, the second cavity 19 and the third cavity 20, thereby realizing automatic classification of metal powder particles in water atomization production.

[0024] The outer shell 7 is arranged outside the third-stage screening baffle 4 , and the moisture in the metal powder particles can be thrown onto the outer shell 7 through the third-stage sieve holes 10 .

[0025] A feed port 1 is provided on the upper side of the screening baffle, and a matching screening baffle cover 16 is provided on the feed port 1. The screening baffle cover 16 includes a first interface 11, a second interface 12 and a third interface 13. The first interface 11 is buckled on the feed port 1, the second interface 12 is buckled on the upper end of the second-stage screening baffle 3, and the third interface 13 is buckled on the upper end of the third-stage screening baffle 4. The third interface 13 is fixed to the third-stage screening baffle 4 by an anti-slip bolt 15 to prevent metal powder particles from splashing during centrifugation.

[0026] The housing 7 is provided with a housing cover 17 to prevent water from splashing during the centrifugation process.

[0027] The bottom of the housing 7 is connected to the water outlet pipe 6, and the water can flow out from the water outlet pipe 6.

[0028] The first cavity 18 is connected to the first discharge pipe, which is connected to the first industrial vacuum cleaner; the second cavity 19 is connected to the second discharge pipe, which is connected to the second industrial vacuum cleaner; the third cavity 20 is connected to the third discharge pipe, which is connected to the third industrial vacuum cleaner. The classified metal powder particles can be collected separately for drying.

[0029] According to the above structure, the specific use principle of this solution is as follows:

[0030] 1. Screening and dehydration of metal powder particles:

[0031] The first-stage sieve hole 8, the second-stage sieve hole 9 and the third-stage sieve hole 10 of the selected screening baffle are 200 mesh, 325 mesh and 600 mesh respectively.

[0032] The mixture of metal powder particles and water after water atomization is injected into the first cavity 18 through the feed port 1, and the centrifuge 5 is started. When the centrifuge 5 is running, the centrifugal disc 14 starts to rotate, and the centrifugal disc 14 rotates while driving the first-stage screening baffle 2, the second-stage screening baffle 3 and the third-stage screening baffle 4 to rotate, and the mixture of metal powder particles and water in the first cavity 18 rotates accordingly. Due to the action of centrifugal force, the mixture of metal powder particles and water is thrown onto the first-stage screening baffle 2;

[0033] The metal powder particles and water with a particle size smaller than the first-stage sieve hole 8 enter the second cavity 19 through the first-stage sieve hole 8, and are thrown onto the second-stage screening baffle 3 due to the centrifugal force;

[0034] The metal powder particles and water with a particle size smaller than the second-stage sieve hole 9 enter the third cavity 20 through the second-stage sieve hole 9, and are thrown onto the third-stage screening baffle 4 due to the centrifugal force;

[0035] Water with a particle size smaller than the third-stage sieve hole 10 enters the fourth cavity 21 through the third-stage sieve hole 10, and then enters the filter press from the outlet pipe 6, and the metal powder remaining in the water is further processed by the filter press.

[0036] 2. Collect metal powder particles:

[0037] Open the housing cover 17 and take out the screening baffle cover 16;

[0038] The third discharge pipe is extended into the third cavity 20 through the upper end of the third cavity 20, and the third industrial vacuum cleaner is started to suck away the metal powder particles in the third cavity 20 through the third discharge pipe;

[0039] Then, the second-stage discharge pipe is extended into the second cavity 19 through the upper end of the second cavity 19, and the second industrial vacuum cleaner 2 is started to suck away the metal powder particles in the second cavity 19 through the second-stage discharge pipe;

[0040] Finally, the first-stage discharge pipe is extended into the first cavity 18 through the upper end of the first cavity 18, and the first industrial vacuum cleaner is started to suck away the metal powder particles in the first cavity 18 through the first-stage discharge pipe.

[0041] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An automatic grading device for water atomization production, comprising a centrifuge (5), characterized in that: The centrifuge (5) comprises a housing (7), a centrifugal disc (14) and a screening baffle, wherein the centrifugal disc (14) is rotatably connected to the centrifuge (5), and at least two levels of screening baffles are mounted on the centrifugal disc (14), wherein the screening baffles are provided with screening holes, wherein the diameter of the screening holes of the screening baffles close to the center of the centrifugal disc (14) is larger than the diameter of the screening holes of the screening baffles far from the center of the centrifugal disc (14), and the housing (7) is arranged outside the screening baffles, and a feed port (1) is arranged on the upper side of the screening baffle, and a matching screening baffle cover (16) is provided on the feed port (1).

2. The automatic grading device for water atomization production according to claim 1, characterized in that: The screening baffles are of three levels, namely, a first-level screening baffle (2), a second-level screening baffle (3) and a third-level screening baffle (4). Each level of screening baffles is annularly distributed on the centrifugal disk, and the center of the screening baffle is coaxial with the centrifugal disk (14). The first-level screening baffle (2), the second-level screening baffle (3) and the third-level screening baffle (4) are respectively provided with first-level sieve holes (8), second-level sieve holes (9) and third-level sieve holes (10). A first cavity (18) is provided inside the first-level screening baffle (2), a second cavity (19) is provided between the first-level screening baffle (2) and the second-level screening baffle (3), a third cavity (20) is provided between the second-level screening baffle (3) and the third-level screening baffle (4), and a fourth cavity (21) is provided between the third-level screening baffle (4) and the housing (7).

3. The automatic grading device for water atomization production according to claim 2, characterized in that: The first-stage sieve hole (8) is 170-250 meshes; the second-stage sieve hole (9) is 270-400 meshes; and the third-stage sieve hole (10) is greater than or equal to 600 meshes.

4. The automatic grading device for water atomization production according to claim 3, characterized in that: The first-stage sieve holes (8), the second-stage sieve holes (9) and the third-stage sieve holes (10) are 200 meshes, 325 meshes and 600 meshes respectively.

5. The automatic grading device for water atomization production according to claim 1, characterized in that: The screening baffle cover (16) comprises a first interface (11), a second interface (12) and a third interface (13), the first interface (11) being buckled on the feed port (1), the second interface (12) being buckled on the upper end of the second-stage screening baffle (3), the third interface (13) being buckled on the upper end of the third-stage screening baffle (4), and the third interface (13) being fixed to the third-stage screening baffle (4) via an anti-drop bolt (15).

6. The automatic grading device for water atomization production according to claim 1, characterized in that: The outer shell (7) is provided with an outer shell cover (17).

7. The automatic grading device for water atomization production according to claim 1, characterized in that: The bottom of the outer shell (7) is in communication with the water outlet pipe (6).

8. The automatic grading device for water atomization production according to claim 2, characterized in that: The first cavity (18) is connected to a first-level discharge pipe, which is connected to a first industrial vacuum cleaner; the second cavity (19) is connected to a second-level discharge pipe, which is connected to a second industrial vacuum cleaner; and the third cavity (20) is connected to a third-level discharge pipe, which is connected to a third industrial vacuum cleaner.

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