Powder material conveying device

Abstract

The utility model provides a powder material conveying device which comprises a horizontal shell, a feeding hopper, a spiral conveying rod, a motor, a check ring, a vertical shell, a winch and a driver. The feeding hopper is arranged above the horizontal shell and communicates with the interior of the horizontal shell. The spiral conveying rod is arranged in the horizontal shell; the motor is arranged outside the horizontal shell, is connected to the spiral conveying rod and is used for driving the spiral conveying rod; the check ring is provided with a plurality of through holes penetrating in the axial direction, and the through holes are used for powder materials conveyed at the free end of the spiral conveying rod to pass through and form a plurality of strip-shaped powder materials. The vertical shell is connected to the horizontal shell at the retainer ring; the winch is provided with a plurality of blades; the driver is connected to the winch and used for driving the winch to do reciprocating translational motion in the axial direction and driving the multiple blades to rotate, then the multiple strip-shaped powder materials formed through the multiple through holes of the check ring are cut off, and the cut-off strip-shaped powder materials fall to the openable and closable bottom side of the vertical shell and are used for outward discharging when the bottom side is opened.

Description

Technical Field

[0001] The present disclosure relates to the field of powder processing, and more particularly to a powder material conveying device. Background Art

[0002] In the field of powder processing, the bulk ratio of the supplied powder material has an important impact on the subsequent processing of the powder. For example, if the powder material belongs to powder metallurgy material, the bulk ratio of the powder material affects the formability during powder metallurgy processing, the density of the product formed after processing, and the mechanical strength.

[0003] Patent document CN200974705Y discloses a device for conveying ultrafine metal powders. The powder is conveyed by a horizontal screw feeder, and the bulk ratio of the powder is adjusted by the screw feeder's speed. However, this method of adjusting the bulk ratio of powders using only a horizontal screw feeder still needs to be further improved. Utility Model Content

[0004] In view of the problems existing in the background technology, an object of the present disclosure is to provide a powder material conveying device, which can improve the looseness ratio of the powder material conveyed by the spiral feeding rod.

[0005] Thus, a powder material conveying device is provided, which includes a horizontal shell, a feed hopper, a spiral feed rod, a motor, a retaining ring, a vertical shell, a capstan and a driver; the feed hopper is arranged above the horizontal shell and is connected to the interior of the horizontal shell, and the feed hopper is used to supply the powder material in powder form to the interior of the horizontal shell; the spiral feed rod is arranged in the horizontal shell and along the axial direction of the horizontal shell; the motor is arranged outside the horizontal shell, the motor is connected to the spiral feed rod, and the motor is used to drive the spiral feed rod, thereby causing the spiral feed rod to spirally convey the powder material supplied to the interior of the horizontal shell via the feed hopper; the retaining ring is fixed in the horizontal shell, the retaining ring is located at the free end of the spiral feed rod and is spaced from the free end of the spiral feed rod, and the retaining ring is provided with a plurality of through holes extending along the axial direction, The through holes are used for allowing the powder material transported at the free end of the spiral feeding rod to pass through and form a plurality of strip-shaped powder materials; the vertical shell is connected to the horizontal shell at the retaining ring, the vertical shell and the horizontal shell are internally connected, the circumference and top side of the horizontal shell are closed, and the bottom side can be opened and closed so that the vertical shell and the horizontal shell form a closure when the bottom side is closed; the capstan is arranged in the vertical shell, the capstan and the retaining ring are axially opposite, and the capstan is provided with a plurality of blades spaced apart from each other along the circumference; the driver is arranged in the vertical shell and connected to the capstan, the driver is used to drive the capstan to move back and forth in the axial direction and drive the plurality of blades to rotate, so that the plurality of blades cut off the plurality of strip-shaped powder materials formed by the plurality of through holes of the retaining ring, and the cut strip-shaped powder materials fall to the openable and closable bottom side of the vertical shell and are used to fall outward when the bottom side is opened.

[0006] The beneficial effects of the present disclosure are as follows: in the powder material conveying device according to the present disclosure, the material is conveyed axially by a spiral feed rod arranged in a horizontal shell, and the looseness ratio of the powder material is adjusted by the rotation speed of the spiral feed rod. Further, based on the fixed retaining ring arranged at the free end of the spiral feed rod, the powder material conveyed at the free end of the spiral feed rod is secondary diverted and squeezed through the multiple through holes of the retaining ring, thereby further improving the looseness ratio of the powder material supplied to the outside by the powder material conveying device, that is, the looseness ratio of the powder material conveyed by the spiral feed rod can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural diagram of the powder material conveying device according to the present disclosure, wherein the spiral feed rod is shown in perspective, the vertical shell is partially cut away, and the capstan is in a working state close to the retaining ring.

[0008] Figure 2 It is a structural diagram of the powder material conveying device according to the present disclosure, wherein the spiral feed rod is shown in perspective, the vertical shell is partially cut away, and the capstan is in a non-working state away from the retaining ring.

[0009] Figure 3 yes Figure 1 and Figure 2 Front view of the retaining ring.

[0010] Figure 4 yes Figure 3 A modified example of the retaining ring.

[0011] Figure 5 yes Figure 3 Another variation of the retaining ring.

[0012] The description of the accompanying drawings is as follows:

[0013] 100 Powder material conveying device 4 motors

[0014] D axial 5 retaining ring

[0015] 1 horizontal shell 51 through hole

[0016] 11 Part 1 6 Vertical Shell

[0017] 12 Part 2 7 Winch

[0018] 13 third part 71 blade

[0019] 2 feed hoppers 8 drives

[0020] 3 spiral feed rod 9 degassing mechanism

[0021] 31 free end 91 communicating pipe

[0022] 32 rod body 92 filter

[0023] 33 spiral blade 93 air pump DETAILED DESCRIPTION

[0024] The accompanying drawings show embodiments of the present disclosure, and it will be understood that the disclosed embodiments are merely examples of the present disclosure, which can be implemented in various forms. Therefore, the specific details disclosed herein should not be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one of ordinary skill in the art to implement the present disclosure in various ways.

[0025] Reference Figures 1 to 5 The powder material conveying device 100 according to the present disclosure includes a horizontal housing 1, a feed hopper 2, a screw feed rod 3, a motor 4, a retaining ring 5, a vertical housing 6, a capstan 7 and a driver 8.

[0026] The feed hopper 2 is arranged above the horizontal shell 1 and is connected to the interior of the horizontal shell 1. The feed hopper 2 is used to supply powder material in powder form to the interior of the horizontal shell 1. The screw feed rod 3 is arranged in the horizontal shell 1 and along the axial direction D of the horizontal shell 1. The motor 4 is arranged outside the horizontal shell 1 and is connected to the screw feed rod 3. The motor 4 is used to drive the screw feed rod 3, thereby causing the screw feed rod 3 to spirally convey the powder material supplied to the interior of the horizontal shell 1 via the feed hopper 2. The retaining ring 5 is fixed in the horizontal shell 1. The retaining ring 5 is located at the free end 31 of the screw feed rod 3 and is spaced apart from the free end 31 of the screw feed rod 3. The retaining ring 5 is provided with a plurality of through holes 51 extending along the axial direction D. The plurality of through holes 51 are used to allow the powder material conveyed at the free end 31 of the screw feed rod 3 to pass through and form a plurality of strips of powder material. The vertical shell 6 is connected to the horizontal shell 1 at the retaining ring 5. The vertical shell 6 and the horizontal shell 1 are internally connected. The horizontal shell 1 is closed in the circumference and top side, and the bottom side can be opened and closed so that the vertical shell 6 and the horizontal shell 1 form a seal when the bottom side is closed. The capstan 7 is provided through the vertical shell 6. The capstan 7 is opposite to the retaining ring 5 along the axial direction D. The capstan 7 is provided with a plurality of blades 71 spaced apart from each other along the circumference. The driver 8 is provided in the vertical shell 6 and connected to the capstan 7. The driver 8 is used to drive the capstan 7 to move back and forth in the axial direction D and to drive the plurality of blades 71 to rotate, thereby causing the plurality of blades 71 to cut the plurality of strip-shaped powder materials formed by the plurality of through holes 51 of the retaining ring 5. The cut strip-shaped powder materials fall to the openable and closable bottom side of the vertical shell 6 and are used to drop materials outward when the bottom side is opened.

[0027] In the powder material conveying device 100 according to the present disclosure, the material is conveyed along the axial direction D by the spiral feeding rod 3 arranged in the horizontal shell 1, and the looseness ratio of the powder material is adjusted by the rotation speed of the spiral feeding rod 3. Further, based on the fixed retaining ring 5 arranged at the free end 31 of the spiral feeding rod 3, the powder material conveyed at the free end 31 of the spiral feeding rod 3 is secondary diverted and squeezed through the multiple through holes 51 of the retaining ring 5, thereby further improving the looseness ratio of the powder material supplied to the outside by the powder material conveying device 100, that is, the looseness ratio of the powder material conveyed by the spiral feeding rod 3 can be improved.

[0028] In the powder material conveying device 100 according to the present disclosure, a plurality of strip-shaped powder materials formed by the plurality of through holes 51 of the retaining ring 5 are cut off by a capstan 7 provided with a plurality of blades 71 spaced apart from each other along the circumferential direction. The cut strip-shaped powder materials will form secondary agglomerates of the powder material to a certain extent. The gaps between the numerous secondary agglomerates play a regulating role in the looseness ratio of the overall powder material during subsequent powder processing, that is, the gaps between the numerous secondary agglomerates and the gaps between the powder particles in each secondary agglomerate can be coordinated with each other, thereby being able to adapt to the flexible and diverse looseness ratio requirements of powder processing.

[0029] In the powder material conveying device 100 according to the present disclosure, when the openable and closable bottom side of the vertical shell 6 is closed, the vertical shell 6 and the horizontal shell 1 form a seal. Due to the characteristics of continuous production, the powder material in the feed hopper 2 and the powder material conveyed by the spiral feed rod 3 form a continuous material flow, that is, the material flow is carried out in a closed state, and the powder material conveying device 100 is only exposed to the external environment at the feed hopper 2, which is beneficial to reducing the pollution of the external environment to the powder material and reducing the pollution of the powder to the working environment, that is, reducing the mutual pollution between the external environment and the powder material.

[0030] exist Figure 1 and Figure 2 In the figure, the horizontal housing 1 is horizontal. In an example not shown, the horizontal housing 1 may be slightly tilted, for example, the axial direction D of the horizontal housing 1 is tilted relative to the horizontal at an angle of less than ±20 degrees. If the angle of the axial direction D of the horizontal housing 1 relative to the horizontal is positive, that is, it increases from the left to the right in the figure, it is beneficial to use the effect of gravity to fine-tune the increase in the looseness ratio. If the angle of the axial direction D of the horizontal housing 1 relative to the horizontal is negative, that is, it decreases from the left to the right in the figure, it is beneficial to use the effect of gravity to fine-tune the decrease in the looseness ratio.

[0031] like Figure 1 and Figure 2As shown, the feed hopper 2 is funnel-shaped, that is, the inner cavity gradually shrinks from top to bottom; the spiral feeding rod 3 includes a rod body 32 and a spiral blade 33, one end of the rod body 32 is connected to the motor 4, and the free end of the rod body 32 constitutes the free end 31 of the spiral feeding rod 3, and the spiral blade 33 is spirally arranged on the rod body 32.

[0032] The motor 4 can be a variable frequency motor, so as to achieve the variable adjustment of the rotation speed of the spiral feeding rod 3.

[0033] The multiple through holes 51 of the retaining ring 5 can be arranged flexibly.

[0034] In one example, if Figure 3 As shown, the plurality of through holes 51 of the retaining ring 5 are arranged concentrically and spaced apart. Figure 3 As shown, the through hole 51 in the center of the plurality of through holes 51 is a single through hole, and adjacent to the single through hole is a circle of through holes 51 spaced apart from each other in the circumferential direction. The through holes 51 radially outside the single through hole can be arranged in one or more circles. Figure 3 In the example shown, the through holes 51 of adjacent rings are spaced apart from each other in the radial and circumferential directions.

[0035] In another example, Figure 4 and Figure 5 As shown, the plurality of through holes 51 are arranged tangentially to each other along a circle. The plurality of through holes 51 can be as follows Figure 4 The two tangent ones shown are Figure 5 Three tangent as shown, or more tangent.

[0036] The vertical housing 6 can be formed separately from the horizontal housing 1 and then assembled together.

[0037] The number of blades 71 of the winch 7 can be two, three or more as needed, and the plurality of blades 71 can be distributed at equal intervals.

[0038] The driver 8 may be a motor, and further may be a variable frequency motor, to adjust the rotation speed of the plurality of blades 71 .

[0039] Reference Figure 1 and Figure 2 In one example, the powder material conveying device 100 further includes a degassing mechanism 9. The degassing mechanism 9 is connected to the interior of the horizontal housing 1. The degassing mechanism 9 is used to evacuate the interior of the horizontal housing 1, thereby extracting the air in the powder material conveyed via the screw feed rod 3 to degas the powder material. Degassing the powder material by the degassing mechanism 9 can further improve the bulk ratio of the powder material being conveyed. Since the screw feed rod 3 is disposed in the horizontal housing 1, the powder material is only obstructed by local powder material in the vertical direction during degassing, which is much easier than degassing when the screw feed rod 3 is disposed in a vertical housing.

[0040] Specifically, if Figure 1 and Figure 2 As shown, the degassing mechanism 9 includes a communication pipe 91, a filter 92, and an air pump 93. The communication pipe 91 is connected between the horizontal housing 1 and the filter 92, and the connection point between the communication pipe 91 and the horizontal housing 1 is between the feed hopper 2 and the retaining ring 5. The filter 92 is connected between the communication pipe 91 and the air pump 93. The air pump 93 is used to extract air from the interior of the horizontal housing 1 through the filter 92 and the communication pipe 91. The filter 92 is used to filter powder particles contained in the air extracted from the interior of the horizontal housing 1.

[0041] In one example, if Figure 1 and Figure 2 As shown, the horizontal housing 1 includes a first portion 11, a second portion 12, and a third portion 13, which are detachably assembled with each other in sequence along the axial direction D. The feed hopper 2 and the motor 4 are disposed in the first portion 11. The connecting pipe 91 is connected to the second portion 12. The retaining ring 5 is disposed in the third portion 13. The vertical housing 6 is connected to the third portion 13. The spiral feed rod 3 spans the first portion 11, the second portion 12, and the third portion 13. This improves the assembly convenience of the powder material conveying device 100. Furthermore, the vertical housing 6 is integrally formed with the third portion 13 of the horizontal housing.

[0042] It is noted that the powder material conveying device 100 according to the present disclosure may be applicable to any suitable solid powder material requiring an increased bulk ratio, such as but not limited to metal powder material, metal oxide material, metal alloy powder material, and the like.

[0043] The above detailed description is used to describe a number of exemplary embodiments, but this document is not intended to be limited to the explicitly disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein may be combined to form multiple additional combinations that are not shown for the sake of brevity.

Claims

1. A powder material conveying device, characterized in that: The powder material conveying device (100) comprises a horizontal housing (1), a feed hopper (2), a screw feed rod (3), a motor (4), a retaining ring (5), a vertical housing (6), a capstan (7), and a driver (8); The feed hopper (2) is arranged above the horizontal shell (1) and is connected to the interior of the horizontal shell (1). The feed hopper (2) is used to supply powdered material in a powdered form into the interior of the horizontal shell (1). The screw feeding rod (3) is disposed in the horizontal housing (1) and arranged along the axial direction (D) of the horizontal housing (1); The motor (4) is arranged outside the horizontal housing (1), and the motor (4) is connected to the screw feeding rod (3). The motor (4) is used to drive the screw feeding rod (3), thereby causing the screw feeding rod (3) to spirally convey the powder material supplied to the interior of the horizontal housing (1) via the feed hopper (2); The retaining ring (5) is fixed in the horizontal housing (1). The retaining ring (5) is located at the free end (31) of the spiral feed rod (3) and is spaced apart from the free end (31) of the spiral feed rod (3). The retaining ring (5) is provided with a plurality of through holes (51) extending in the axial direction (D). The plurality of through holes (51) are used for allowing powder materials transported at the free end (31) of the spiral feed rod (3) to pass through and form a plurality of strips of powder materials. The vertical housing (6) is connected to the horizontal housing (1) at the retaining ring (5), the vertical housing (6) and the horizontal housing (1) are internally connected, the circumference and top side of the horizontal housing (1) are closed, and the bottom side can be opened and closed so that the vertical housing (6) and the horizontal housing (1) form a seal when the bottom side is closed; The capstan (7) is passed through the vertical housing (6), the capstan (7) and the retaining ring (5) are opposite to each other along the axial direction (D), and the capstan (7) is provided with a plurality of blades (71) spaced apart from each other along the circumferential direction; A driver (8) is provided on the vertical housing (6) and connected to the capstan (7). The driver (8) is used to drive the capstan (7) to reciprocate and translate along the axial direction (D) and to drive the plurality of blades (71) to rotate, thereby causing the plurality of blades (71) to cut a plurality of strip-shaped powder materials formed through the plurality of through holes (51) of the retaining ring (5). The cut strip-shaped powder materials fall to the bottom side of the vertical housing (6) that can be opened and closed, and are used to drop the materials outward when the bottom side is opened.

2. The powder material conveying device according to claim 1, characterized in that: The horizontal shell (1) is horizontal, or the axial direction (D) of the horizontal shell (1) is inclined relative to the horizontal, and the inclination angle is less than ±20 degrees.

3. The powder material conveying device according to claim 1, characterized in that: The feed hopper (2) is funnel-shaped; The spiral feeding rod (3) comprises a rod body (32) and a spiral blade (33); One end of the rod body (32) is connected to the motor (4), the free end of the rod body (32) constitutes the free end (31) of the spiral feeding rod (3), and the spiral blade (33) is spirally arranged on the rod body (32); The motor (4) and the driver (8) are both variable frequency motors.

4. The powder material conveying device according to claim 1, characterized in that: The plurality of through holes (51) of the retaining ring (5) are concentrically spaced and arranged.

5. The powder material conveying device according to claim 4, characterized in that: The central through hole (51) among the plurality of through holes (51) is a single through hole, and adjacent to the single through hole is a circle of through holes (51) spaced apart from each other in the circumferential direction.

6. The powder material conveying device according to claim 4, characterized in that: The through holes (51) of adjacent rings are spaced apart from each other in radial and circumferential directions.

7. The powder material conveying device according to claim 1, characterized in that: A plurality of through holes (51) are arranged tangentially to each other along a circle.

8. The powder material conveying device according to claim 1, characterized in that: The powder material conveying device (100) further includes a degassing mechanism (9); The degassing mechanism (9) is connected to the interior of the horizontal shell (1), and is used to evacuate the interior of the horizontal shell (1), thereby extracting the air in the powder material transported by the screw feeding rod (3) to degas the powder material.

9. The powder material conveying device according to claim 8, characterized in that: The degassing mechanism (9) includes a communication pipe (91), a filter (92) and an air pump (93); The communicating pipe (91) is connected between the horizontal housing (1) and the filter (92), and the connecting position of the communicating pipe (91) and the horizontal housing (1) is between the feed hopper (2) and the retaining ring (5); The filter (92) is connected between the communication pipe (91) and the air pump (93); The air pump (93) is used to extract the air inside the horizontal shell (1) through the filter (92) and the communication pipe (91); The filter (92) is used to filter powder particles contained in the air extracted from the interior of the horizontal housing (1).

10. The powder material conveying device according to claim 9, characterized in that: The horizontal shell (1) comprises a first part (11), a second part (12) and a third part (13) which are sequentially detachably assembled with each other along an axial direction (D); The feed hopper (2) and the motor (4) are arranged in the first part (11); The communication pipe (91) is connected to the second part (12), The retaining ring (5) is arranged on the third part (13), The vertical housing (6) is connected to the third part (13), The screw feeding rod (3) spans the first portion (11), the second portion (12) and the third portion (13).

Images