Magnesium powder classifying and grading device for passivated magnesium powder production

Abstract

The invention relates to the technical field of magnesium powder processing, and discloses a magnesium powder classifying and grading device for passivated magnesium powder production, the magnesium powder classifying and grading device comprises a support and a screening drum, the support comprises a base and an L-shaped supporting arm, damping legs are fixedly mounted at four corners of the bottom of the base, a fixing drum is fixedly mounted in the center of the upper surface of the base, and the supporting arm is fixedly mounted at the top of the base; the screening drum is located between the base and the upper arm of the supporting arm, the air exhaust mechanism comprises a driving shaft, the interior of the driving shaft 3 penetrates through the upper surface of the driving shaft 3 to be provided with a deep hole, and the driving shaft is rotationally installed in the fixing drum. Magnesium powder scattered in the air is collected in a centralized mode through pressure difference, and the situation that the magnesium powder scattered in the air generates flying dust and is not easy to collect is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of magnesium powder processing, in particular to a magnesium powder classification and grading device for the production of passivated magnesium powder. Background Art

[0002] Magnesium has active chemical properties. Due to its large specific surface area, magnesium powder can easily react slowly with oxygen, nitrogen and moisture in the air during its production, storage and use, causing its effective activity to decrease, affecting its use effect. It can easily induce various safety hazards due to the exothermic reaction. Therefore, magnesium powder needs to be passivated during production to avoid the above problems. However, the particles of the passivated magnesium powder are of different sizes and need to be classified and graded to be suitable for various application requirements.

[0003] In the prior art, a vibrating screen is usually used to classify the passivated magnesium powder. Since the unclassified passivated magnesium powder contains granular magnesium powder and powdered magnesium powder of different sizes, the powdered magnesium powder is separated from the granular magnesium powder during the screening process, which will generate a lot of smoke and dust and is not conducive to the collection of magnesium powder. Summary of the invention

[0004] The object of the present invention is to provide a magnesium powder classification and grading device for the production of passivated magnesium powder to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention discloses a magnesium powder classification and grading device for the production of passivated magnesium powder, comprising a bracket and a sub-screening cylinder, wherein the bracket comprises a base and an L-shaped supporting arm, shock-absorbing legs are fixedly installed at four corners of the bottom of the base, a fixing cylinder is fixedly installed at the center of the upper surface of the base, the supporting arm is fixedly installed at the top of the base, and the sub-screening cylinder is located between the base and the upper arm of the supporting arm; The air extraction mechanism includes a driving shaft, a deep hole is opened inside the driving shaft 3 and penetrates through the upper surface thereof, and the driving shaft is rotatably mounted inside the fixed cylinder; When air is introduced through the intake pipe, the flow velocity inside the intake pipe increases and the pressure decreases, so that the air containing magnesium powder inside the sub-screen cylinder is sucked into the intake pipe and discharged through the discharge port at the bottom of the drive shaft, and the magnesium powder scattered in the air is collected.

[0006] Furthermore, a sleeve is fixedly installed on the upper arm of the support arm, the sleeve is located directly above the fixed tube, a motor is arranged on the side of the fixed tube close to the support arm, the motor is fixedly installed on the top of the base, and a driving gear is fixedly installed on the output end of the motor.

[0007] Furthermore, a first discharge port is fixedly installed on the bottom front of the sub-screen cylinder, a second discharge port is fixedly installed in the middle of the sub-screen cylinder, a third discharge port is fixedly installed on the top of the sub-screen cylinder, the second discharge port and the third discharge port are symmetrically arranged, and a feed port is opened on the top of the sub-screen cylinder.

[0008] Furthermore, mounting cylinders are fixedly installed in the center of both side end surfaces of the sub-screen cylinder, and bearing 1 is rotatably installed inside the mounting cylinder. The first sieve plate and the second sieve plate are fixedly installed inside the sub-screen cylinder, and the first sieve plate is located above the second sieve plate. Mounting openings are opened in the middle of the first sieve plate and the second sieve plate, and bearing 2 is fixedly installed inside the mounting openings. An hourglass-shaped funnel is fixedly installed inside the sub-screen cylinder, and the discharge opening is located at the bottom of the second sieve plate. A number of inclined plates are fixedly connected to the inner wall of the bottom of the sub-screen cylinder, and a certain gap is left between the inclined plates and the side walls of the sub-screen cylinder.

[0009] Furthermore, a deep hole is opened inside the driving shaft and penetrates its upper surface, a gear ring is fixedly installed at the bottom of the driving shaft, the gear ring is connected to the driving gear, and an eccentric disk is fixedly connected to both ends of the driving shaft, and the upper and lower bearings are respectively fixedly installed on the corresponding eccentric disks.

[0010] Furthermore, eccentric disk 2 and eccentric disk 3 are fixedly connected to the middle part of the driving shaft, bearing 2 located inside the first screen plate is fixedly installed on eccentric disk 2, bearing 2 located inside the second screen plate is fixedly installed on eccentric disk 3, and cover plates are fixedly connected to eccentric disk 2 and the top of the arc-shaped opening.

[0011] Furthermore, three groups of arc-shaped openings are opened in the middle of the driving shaft, and the three groups of arc-shaped openings are staggered with the eccentric disk 2 and the eccentric disk 3. A number of inclined discharge openings are evenly opened at the bottom of the driving shaft, and a number of air induced plates are fixedly connected to the bottom of the side wall of the driving shaft.

[0012] Furthermore, an air intake pipe is rotatably installed inside the deep hole of the drive shaft, and the air intake pipe is fixedly installed inside the sleeve. Three groups of air intake ports are opened on the side wall of the air intake pipe, and the three groups of air intake ports are respectively at the same horizontal position as one group of arc-shaped ports; The synchronous rotation of the induced draft plate will blow the scattered magnesium powder toward the inclined plate, and the magnesium powder will be concentrated at the bottom edge of the sub-sieve cylinder through the guidance of the inclined plate. The inclined setting of the inclined plate has a guiding effect on the flowing air, and the air can be guided to blow the magnesium powder at the bottom edge of the sub-sieve cylinder to flow along the side wall of the sub-sieve cylinder, and finally be discharged through the first discharge port, so as to facilitate the collection of the magnesium powder.

[0013] The present invention has the following beneficial effects: (1) The present invention can drive the sub-screening drum to swing in a circle by setting a driving shaft, rotating the driving shaft, setting eccentric discs 1, 2 and 3, and cooperating with bearings 1 and 2, and cooperating with the setting of the first screen plate and the second screen plate to realize the sub-screening action.

[0014] (2) The present invention provides an air intake pipe to allow air to flow in, thereby increasing the flow rate inside the air intake pipe and reducing the pressure, so that the air containing magnesium powder inside the sub-screen cylinder can be sucked into the air intake pipe and discharged through the discharge port at the bottom of the drive shaft, thereby collecting the magnesium powder scattered in the air and avoiding the situation where the magnesium powder is scattered in the air, generating dust, and is difficult to collect.

[0015] (3) In the present invention, when the driving shaft rotates, the induced draft plate rotates synchronously to blow the scattered magnesium powder toward the inclined plate. The magnesium powder is guided by the inclined plate to be concentrated at the bottom edge of the sub-sieve cylinder. The inclined setting of the inclined plate has a guiding effect on the flowing air, and the air can be guided to blow the magnesium powder at the bottom edge of the sub-sieve cylinder to flow along the side wall of the sub-sieve cylinder, and finally be discharged through the first discharge port, so that the magnesium powder is easy to collect.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the screening cylinder of the present invention; Figure 3 This is a schematic diagram of the structure of the screening cylinder of the present invention; Figure 4 It is a schematic diagram of the sieve plate structure of the present invention; Figure 5 It is a schematic diagram of the air extraction mechanism of the present invention; Figure 6 For the present invention Figure 5 A is a partial enlarged schematic diagram; Figure 7 This is a schematic diagram of the position of the air inlet pipe of the present invention; Figure 8 It is a schematic diagram of the bottom of the screening cylinder of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. bracket; 11. base; 111. shock-absorbing leg; 112. fixed cylinder; 12. support arm; 121. sleeve; 13. motor; 131. driving gear; 2. screening cylinder; 201. first discharge port; 202. second discharge port; 203. third discharge port; 204. feed port; 21. mounting cylinder; 211. bearing 1; 22. first sieve plate; 23. second sieve plate; 231. mounting port; 232. bearing 2; 24. funnel; 25. inclined plate; 3. driving shaft; 31. gear ring; 32. eccentric disk 1; 33. eccentric disk 2; 34. eccentric disk 3; 341. cover plate; 35. arc-shaped port; 36. discharge port; 37. draft plate; 38. air inlet pipe; 381. air intake port. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 8 As shown, the present invention is a magnesium powder classification and grading device for passivated magnesium powder production, comprising a bracket 1 and a sub-screening cylinder 2, the bracket 1 comprising a base 11 and an L-shaped support arm 12, shock-absorbing legs 111 are fixedly installed at the four corners of the bottom of the base 11, a fixed cylinder 112 is fixedly installed at the center of the upper surface of the base 11, the support arm 12 is fixedly installed on the top of the base 11, and the sub-screening cylinder 2 is located between the base 11 and the upper arm of the support arm 12; The air extraction mechanism includes a driving shaft 3 , a deep hole is formed inside the driving shaft 3 and penetrates through the upper surface thereof, and the driving shaft 3 is rotatably mounted inside the fixed cylinder 112 .

[0022] A sleeve 121 is fixedly mounted on the upper arm of the support arm 12, and the sleeve 121 is located directly above the fixed cylinder 112. A motor 13 is arranged on one side of the fixed cylinder 112 close to the support arm 12, and the motor 13 is fixedly mounted on the top of the base 11, and a driving gear 131 is fixedly mounted on the output end of the motor 13; The driving shaft 3 is driven to rotate by the meshing of the driving gear 131 and the gear ring 31. The eccentric disc 1 32, the eccentric disc 2 33 and the eccentric disc 3 34 are arranged, and the action of the bearing 1 211 and the bearing 2 232 is cooperated to drive the sub-screening cylinder 2 to swing in a circle. The sub-screening action is realized by the arrangement of the first screen plate 22 and the second screen plate 23. The magnesium powder produced by the sub-screening will be scattered in the air. During screening, air is introduced into the air inlet pipe 38 , the flow rate inside the air inlet pipe 38 increases, the pressure decreases, and the air containing magnesium powder inside the screening cylinder 2 is sucked into the air inlet pipe 38 .

[0023] A first discharge port 201 is fixedly installed on the bottom front of the sub-screening cylinder 2, a second discharge port 202 is fixedly installed in the middle of the sub-screening cylinder 2, a third discharge port 203 is fixedly installed on the top of the sub-screening cylinder 2, the second discharge port 202 and the third discharge port 203 are symmetrically arranged, and a feed port 204 is opened on the top of the sub-screening cylinder 2.

[0024] A mounting cylinder 21 is fixedly installed in the center of both side end surfaces of the sub-screen cylinder 2, and a bearing 211 is rotatably installed inside the mounting cylinder 21. A first sieve plate 22 and a second sieve plate 23 are fixedly installed inside the sub-screen cylinder 2. The first sieve plate 22 is located above the second sieve plate 23. A mounting opening 231 is provided in the middle of the first sieve plate 22 and the second sieve plate 23, and a bearing 232 is fixedly installed inside the mounting opening 231. An hourglass-shaped funnel 24 is fixedly installed inside the sub-screen cylinder 2. The discharge opening 24 is located at the bottom of the second sieve plate 23. A plurality of inclined plates 25 are fixedly connected to the bottom inner wall of the sub-screen cylinder 2, and a certain gap is left between the inclined plate 25 and the side wall of the sub-screen cylinder 2.

[0025] A deep hole is opened inside the driving shaft 3 and penetrates its upper surface. A gear ring 31 is fixedly installed at the bottom of the driving shaft 3. The gear ring 31 is transmission-connected to the driving gear 131. Both ends of the driving shaft 3 are fixedly connected to eccentric disks 32. The upper and lower bearings 211 are respectively fixedly installed on the corresponding eccentric disks 32.

[0026] The middle part of the driving shaft 3 is fixedly connected with an eccentric disk 2 33 and an eccentric disk 34. The bearing 2 232 located inside the first sieve plate 22 is fixedly installed on the eccentric disk 2 33. The bearing 2 232 located inside the second sieve plate 23 is fixedly installed on the eccentric disk 34. The eccentric disk 2 33 and the top of the arc-shaped opening 35 are fixedly connected with a cover plate 341.

[0027] Three groups of arc-shaped openings 35 are opened in the middle of the driving shaft 3, and the three groups of arc-shaped openings 35 are staggered with the eccentric disk 2 33 and the eccentric disk 3 34. A plurality of inclined discharge openings 36 are evenly opened at the bottom of the driving shaft 3, and a plurality of air induced plates 37 are fixedly connected to the bottom of the side wall of the driving shaft 3.

[0028] An air intake pipe 38 is rotatably mounted inside the deep hole of the drive shaft 3. The air intake pipe 38 is fixedly mounted inside the sleeve 121. Three groups of air intake ports 381 are opened on the side wall of the air intake pipe 38. The three groups of air intake ports 381 are respectively at the same horizontal position as one group of arc-shaped ports 35. The magnesium powder that has not been blown up will be gathered by the inclined plate 25 and then fall to the bottom of the sub-sieve cylinder 2. The air sucked into the interior 38 will finally be discharged through the discharge port 36 at the bottom of the drive shaft 3. The exhaust air can be guided by the setting of the induced draft plate 37, and the air flow rate can be reduced by the setting of multiple discharge ports 36 to prevent excessive dust from flying. When the drive shaft 3 rotates, the induced draft plate 37 will rotate synchronously to blow the scattered magnesium powder toward the inclined plate 25. The magnesium powder will be concentrated at the bottom edge of the sub-sieve cylinder 2 through the guidance of the inclined plate 25, and the inclined setting of the inclined plate 25 has a guiding effect on the flowing air, which can guide the air to blow the magnesium powder at the bottom edge of the sub-sieve cylinder 2 to flow along the side wall of the sub-sieve cylinder 2, and finally be discharged through the first discharge port 201.

[0029] When in use, the motor 13 is started, and the driving shaft 3 is driven to rotate by the meshing of the driving gear 131 and the gear ring 31. The eccentric disc 1 32, the eccentric disc 2 33 and the eccentric disc 3 34 are arranged, and the bearing 1 211 and the bearing 2 232 are cooperated to drive the sub-screening cylinder 2 to swing in a circle. The first screen plate 22 and the second screen plate 23 are arranged to realize the sub-screening action, and the magnesium powder produced by the sub-screening will be scattered in the air. During the screening process, air is introduced into the air inlet pipe 38, the flow rate inside the air inlet pipe 38 increases, the pressure decreases, and the air containing magnesium powder inside the screening cylinder 2 is sucked into the air inlet pipe 38; The magnesium powder that has not been blown up will be gathered by the inclined plate 25 and then fall to the bottom of the sub-sieve cylinder 2. The air sucked into the interior 38 will finally be discharged through the discharge port 36 at the bottom of the driving shaft 3. The exhaust air can be guided by the setting of the induced draft plate 37, and the air flow rate can be reduced by the setting of multiple discharge ports 36 to prevent excessive dust from flying. When the driving shaft 3 rotates, the induced draft plate 37 will rotate synchronously to blow the scattered magnesium powder to the inclined plate 25. The magnesium powder will be concentrated at the bottom edge of the sub-sieve cylinder 2 through the guidance of the inclined plate 25, and the inclined setting of the inclined plate 25 has a guiding effect on the flowing air, which can guide the air to blow the magnesium powder at the bottom edge of the sub-sieve cylinder 2 to flow along the side wall of the sub-sieve cylinder 2, and finally be discharged through the first discharge port 201. The magnesium powder scattered in the air is collected and concentrated by the pressure difference, avoiding the situation where the magnesium powder is scattered in the air, generating dust, and is difficult to collect.

[0030] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A magnesium powder classification and grading device for the production of passivated magnesium powder, comprising a support (1) and a screening cylinder (2), the support (1) comprising a base (11) and an L-shaped support arm (12), shock-absorbing legs (111) being fixedly mounted at four corners of the bottom of the base (11), a fixing cylinder (112) being fixedly mounted at the center of the upper surface of the base (11), the support arm (12) being fixedly mounted on the top of the base (11), the screening cylinder (2) being located between the base (11) and the upper arm of the support arm (12), and characterized in that: Also includes: The air extraction mechanism comprises a driving shaft (3), a deep hole is provided inside the driving shaft (3) and penetrates through the upper surface thereof, and the driving shaft (3) is rotatably mounted inside the fixed cylinder (112).

2. A magnesium powder classification and grading device for the production of passivated magnesium powder according to claim 1, characterized in that: A sleeve (121) is fixedly mounted on the upper arm of the support arm (12); the sleeve (121) is located directly above the fixed cylinder (112); a motor (13) is provided on a side of the fixed cylinder (112) close to the support arm (12); the motor (13) is fixedly mounted on the top of the base (11); and a driving gear (131) is fixedly mounted on the output end of the motor (13).

3. A magnesium powder classification and grading device for the production of passivated magnesium powder according to claim 2, characterized in that: A first discharge port (201) is fixedly mounted on the front bottom portion of the sub-screen cylinder (2), a second discharge port (202) is fixedly mounted in the middle portion of the sub-screen cylinder (2), and a third discharge port (203) is fixedly mounted on the top portion of the sub-screen cylinder (2), the second discharge port (202) and the third discharge port (203) being symmetrically arranged, and a feed port (204) is provided on the top portion of the sub-screen cylinder (2).

4. A magnesium powder classification and grading device for the production of passivated magnesium powder according to claim 3, characterized in that: A mounting cylinder (21) is fixedly mounted at the center of both side end surfaces of the sub-screen cylinder (2), and a first bearing (211) is rotatably mounted inside the mounting cylinder (21). A first sieve plate (22) and a second sieve plate (23) are fixedly mounted inside the sub-screen cylinder (2), and the first sieve plate (22) is located above the second sieve plate (23). A mounting opening (231) is provided in the middle of the first sieve plate (22) and the second sieve plate (23), and a second bearing (232) is fixedly mounted inside the mounting opening (231). An hourglass-shaped funnel (24) is fixedly mounted inside the sub-screen cylinder (2), and the discharge opening (24) is located at the bottom of the second sieve plate (23). A plurality of inclined plates (25) are fixedly connected to the inner wall of the bottom of the sub-screen cylinder (2), and a certain gap is left between the inclined plates (25) and the side walls of the sub-screen cylinder (2).

5. A magnesium powder classification and grading device for the production of passivated magnesium powder according to claim 4, characterized in that: A gear ring (31) is fixedly mounted on the bottom of the driving shaft (3), and the gear ring (31) is drivingly connected to a driving gear (131). Both ends of the driving shaft (3) are fixedly connected to an eccentric disk (32), and the upper and lower bearings (211) are respectively fixedly mounted on corresponding eccentric disks (32).

6. A magnesium powder classification and grading device for the production of passivated magnesium powder according to claim 5, characterized in that: The middle part of the drive shaft (3) is fixedly connected to an eccentric disk 2 (33) and an eccentric disk 3 (34); the bearing 2 (232) located inside the first sieve plate (22) is fixedly mounted on the eccentric disk 2 (33); the bearing 2 (232) located inside the second sieve plate (23) is fixedly mounted on the eccentric disk 3 (34); and the eccentric disk 2 (33) and the top of the arc-shaped opening (35) are both fixedly connected to a cover plate (341).

7. A magnesium powder classification and grading device for the production of passivated magnesium powder according to claim 6, characterized in that: The middle of the drive shaft (3) is provided with three groups of arc-shaped openings (35), which are arranged alternately with the second eccentric disk (33) and the third eccentric disk (34). The bottom of the drive shaft (3) is evenly provided with a plurality of inclined discharge openings (36), and the bottom of the side wall of the drive shaft (3) is fixedly connected with a plurality of air guide plates (37).

8. A magnesium powder classification and grading device for the production of passivated magnesium powder according to claim 7, characterized in that: An air intake pipe (38) is rotatably mounted inside the deep hole of the drive shaft (3). The air intake pipe (38) is fixedly mounted inside the sleeve (121). Three groups of air intake ports (381) are provided on the side wall of the air intake pipe (38). The three groups of air intake ports (381) are respectively located at the same horizontal position as one group of arc-shaped ports (35).

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