A powder screening apparatus

Abstract

The application relates to a powder screening device, which comprises a vibrating screen body, a discharge pipe arranged on the vibrating screen body, a collecting barrel arranged below the discharge pipe, a guide cylinder sleeved on the outer surface of the discharge pipe, and a connecting assembly used for detachably connecting the guide cylinder to the discharge pipe. The guide cylinder is made of flexible material, the inlet of the guide cylinder is communicated with the outlet of the discharge pipe, and the outlet extends into the interior of the collecting barrel. The application has the effect of reducing the waste of metal powder.

Description

Technical Field

[0001] This application relates to the field of screening equipment technology, and in particular to a powder screening device. Background Technology

[0002] In many metal powder preparation processes, after the metal powder is made, it needs to be screened by screening equipment to meet the specific requirements of powder particle size in different scenarios. At present, vibrating screen is a commonly used screening equipment in the industry. During screening, metal powder is added into the vibrating screen through the feed pipe. Then the motor starts and drives the vibrator to run. The vibration force generated by the vibrator causes the screen body to vibrate repeatedly and periodically, thereby driving the screen to move up and down continuously. Qualified powder that meets the particle size requirements will fall through the screen into the discharge pipe and be discharged.

[0003] Currently, the conventional method for collecting metal powder is to place a collection bucket below the discharge pipe to receive qualified powder. However, because metal powder is lightweight, the powder discharged from the discharge pipe after sieving has a certain kinetic energy. During its fall, it is easily affected by factors such as airflow generated by vibration and airflow in the workshop environment, causing it to scatter or deviate from its trajectory, thus leaving the collection range of the bucket and falling outside the bucket, resulting in direct waste of metal powder, which is obviously inadequate. Utility Model Content

[0004] To reduce the waste of metal powder, this application provides a powder screening device.

[0005] The powder screening equipment provided in this application adopts the following technical solution: A powder screening device includes a vibrating screen body, a discharge pipe on the vibrating screen body, a collection bucket below the discharge pipe, a guide cylinder sleeved on the outer surface of the discharge pipe, the guide cylinder being detachably connected to the discharge pipe via a connecting assembly, the guide cylinder being made of a flexible material, the inlet of the guide cylinder being connected to the outlet of the discharge pipe, and the outlet extending into the inside of the collection bucket.

[0006] By adopting the above technical solution, qualified powder flows through the discharge pipe into the guide cylinder, and then falls into the collection bucket along the guide cylinder. During the falling process, the powder is constrained by the range of the guide cylinder and cannot be scattered significantly, thereby effectively reducing the possibility of trajectory deviation caused by its own kinetic energy, vibration airflow and workshop environment airflow, ensuring that most of the powder falls into the collection bucket and reducing the waste of metal powder.

[0007] Optionally, the connecting assembly includes a bolt clamp and a connecting ring. The bolt clamp clamps the guide tube to the outer periphery of the discharge pipe, and the connecting ring is disposed at the end of the guide tube near the discharge pipe. The bottom surface of the connecting ring overlaps the upper surface of the bolt clamp.

[0008] By adopting the above technical solution, the bolt clamp facilitates the replacement of the guide tube by workers. The overlapping fit between the connecting ring and the bolt clamp restricts the downward displacement of the guide tube, reduces the possibility of the guide tube falling off the bolt clamp during powder falling or equipment vibration, and ensures that the guide tube plays its role in guiding the powder.

[0009] Optionally, the end of the guide tube away from the connecting ring is folded upward and has an adjusting ring. The connecting ring has multiple adjusting components. Each adjusting component includes a mounting bracket on the bottom surface of the connecting ring. A take-up shaft is rotatably connected to the mounting bracket. A pull rope is wound on the take-up shaft. The end of the pull rope away from the take-up shaft is located on the adjusting ring. The mounting bracket has a driving component that drives the take-up shaft to rotate.

[0010] By adopting the above technical solution, when the metal powder in the collection bucket gradually accumulates to near the outlet of the guide tube, the worker drives the winding shaft to rotate through the drive component, so that the winding shaft winds up the connecting rope. The connecting rope drives the adjusting ring to rise, and the adjusting ring in turn drives the discharge port of the guide tube to move upward, thereby reducing the probability that the metal powder in the collection bucket will not pass the outlet of the guide tube and reducing the possibility of powder accumulation blocking the outlet of the guide tube, thus ensuring that qualified powder enters the collection bucket smoothly.

[0011] Optionally, a threaded groove is provided on one side of the mounting bracket, and the end of the take-up shaft extends into the threaded groove and is provided with a limiting strip. The driving component is an outer nut that is slidably sleeved on the take-up shaft. The outer nut is provided with a limiting groove that slides with the limiting strip, and the outer nut is threadedly connected to the threaded groove.

[0012] By adopting the above technical solution, when the adjusting ring needs to rise, the worker places the outer nut on the outer surface of the take-up shaft, and then screws the outer nut into the threaded groove. When the outer nut rotates, it drives the take-up shaft to rotate synchronously through the limiting groove and the limiting strip. As the outer nut is continuously screwed in, the take-up shaft gradually winds up the pull rope, and the pull rope pulls the adjusting ring to rise. At the same time, the friction between the outer nut and the threaded groove limits the rotation of the take-up shaft, so that the worker does not need to use external force to maintain the state of the take-up shaft winding the pull rope, ensuring that the discharge port of the guide cylinder is stably located above the metal powder, which facilitates the metal powder falling into the collection bucket.

[0013] Optionally, the adjusting ring is provided with a tapping mechanism, the tapping mechanism including a plurality of tapping blocks evenly arranged along the circumference of the adjusting ring, the inner sidewall of the adjusting ring is provided with a sliding groove that slides with the plurality of tapping blocks, and the adjusting ring is provided with a driving component that drives the plurality of tapping blocks to move synchronously back and forth along the sliding groove.

[0014] By adopting the above technical solution, the driving component drives multiple tapping blocks to move synchronously back and forth along the sliding groove. When the tapping blocks move, they can periodically tap the guide cylinder, thereby shaking the metal powder attached to the inside of the guide cylinder into the collection bucket, further improving the collection efficiency of metal powder and reducing the waste caused by metal powder remaining inside the guide cylinder.

[0015] Optionally, the driving assembly includes a driving ring, an adjusting ring having an annular groove that rotatably engages with the driving ring, a threading groove communicating with the annular groove having an inner wall of each sliding groove, a connecting rope being provided in the threading groove, the connecting rope connecting the striking block and the driving ring, a push spring being provided in the sliding groove, the push spring driving the striking block to squeeze the guide cylinder, a toggle block being provided on the driving ring, and a toggle groove having a sliding engagement with the toggle block having an inner wall of the annular groove.

[0016] By adopting the above technical solution, the worker pushes the lever block to slide along the lever groove. The lever block drives the drive ring to rotate in the groove. The drive ring drives the end of the pull rope to move in the groove. At this time, the pull rope overcomes the elastic force of the push spring and pulls the striking block into the sliding groove. The striking block disengages from the guide cylinder. When the lever block moves to the end of the lever groove, the worker releases the force on the lever block and pushes the spring to push the striking block out of the sliding groove and strike the surface of the guide cylinder. This cycle is repeated to achieve multiple striking blocks repeatedly striking the guide cylinder, effectively shaking off the powder adhering to the guide cylinder and reducing the waste of metal powder caused by residue.

[0017] Optionally, a limiting groove is provided on the inner side wall of the sliding groove, and a limiting block is provided on the striking block to slide in cooperation with the limiting groove. When the pushing spring drives the limiting block to abut against the end of the limiting groove near the guide cylinder, the striking block squeezes the guide cylinder, and the connecting rope loosens.

[0018] By adopting the above technical solution, the sliding cooperation between the limiting block and the limiting groove limits the range of movement of the striking block, effectively preventing the striking block from disengaging from the sliding groove during reciprocating movement, thereby ensuring the stable operation of the striking mechanism.

[0019] Optionally, the surface of the striking block near the guide cylinder is an arc surface.

[0020] By adopting the above technical solution, the arc surface of the striking block can form a closer contact with the flexible guide tube, increasing the contact area with the guide tube and making the striking force more evenly applied to the guide tube.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a guide tube, the powder is restricted from scattering significantly during its fall, thus effectively reducing the possibility of trajectory deviation caused by its own kinetic energy, vibration airflow, and workshop environment airflow, ensuring that most of the powder falls into the collection bucket and reducing the waste of metal powder. 2. By setting an adjusting ring and adjusting components, when the metal powder in the collection bucket gradually accumulates to near the outlet of the guide tube, the worker drives the adjusting ring to rise through the adjusting components, thereby moving the outlet of the guide tube upward. This reduces the probability that the metal powder in the collection bucket will not reach the outlet of the guide tube, reduces the possibility of powder accumulation blocking the outlet of the guide tube, and ensures that qualified powder enters the collection bucket smoothly. 3. This application sets up a tapping mechanism, which drives multiple tapping blocks to move synchronously back and forth along the sliding groove. When the tapping blocks move, they can periodically tap the guide cylinder, thereby shaking the metal powder attached to the inside of the guide cylinder into the collection bucket, further improving the collection efficiency of metal powder and reducing the waste caused by metal powder remaining inside the guide cylinder. Attached Figure Description

[0022] Figure 1 This is a structural diagram of this application.

[0023] Figure 2 This is a schematic diagram of the structure of the adjustment component in the embodiments of this application.

[0024] Figure 3 This is an exploded view of the area between the take-up shaft and the outer nut in an embodiment of this application.

[0025] Figure 4 This is a cross-sectional view of the adjusting ring in an embodiment of this application.

[0026] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0027] Explanation of reference numerals in the attached drawings: 01, Vibrating screen body; 02, Discharge pipe; 03, Collection bucket; 1, Connecting assembly; 101, Bolt clamp; 102, Connecting ring; 2, Guide cylinder; 3, Adjusting ring; 31, Sliding groove; 311, Limiting groove; 32, Ring groove; 33, Threading groove; 34, Pushing groove; 4, Adjusting assembly; 41, Mounting bracket; 411, Threaded groove; 42, Rewinding shaft; 421, Limiting strip; 43, Pull rope; 44, External nut; 5, Beating mechanism; 51, Beating block; 511, Limiting block; 52, Drive assembly; 521, Drive ring; 522, Connecting rope; 523, Push spring; 524, Pushing block. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses a powder screening device.

[0030] Reference Figure 1 A powder screening device includes a vibrating screen body 01. The vibrating screen is an existing device, and its specific operating principle will not be described in detail here. A discharge pipe 02 is installed on the vibrating screen body 01, and a collection bucket 03 for collecting qualified metal powder is set below the discharge pipe 02. The collection bucket 03 is placed on the ground.

[0031] Reference Figure 1 A guide tube 2 is detachably connected to the discharge pipe 02 via a connecting component 1. The guide tube 2 is made of flexible material. In this embodiment, the guide tube 2 is a cloth tube. The inlet of the guide tube 2 is connected to the outlet of the discharge pipe 02, and the outlet extends into the inside of the collection bucket 03.

[0032] The qualified powder falls into the collection bucket 03 through the discharge pipe 02 and the guide cylinder 2. During the falling process, the powder is constrained by the range of the guide cylinder 2 and cannot be scattered significantly, thereby effectively reducing the possibility of trajectory deviation caused by its own kinetic energy, vibration airflow and workshop environment airflow, ensuring that most of the powder falls into the collection bucket 03 and reducing the waste of metal powder. When a collection bucket 03 is empty, the worker ties the outlet end of the guide cylinder 2 to prevent the screened metal powder from falling out of the guide cylinder 2, and then the collection bucket 03 is replaced.

[0033] Reference Figure 1 and Figure 2 The connecting component 1 includes a bolt clamp 101 and a connecting ring 102. The bolt clamp 101 drives the inner wall of the guide cylinder 2 to fit tightly against the outer periphery of the discharge pipe 02. The fixing of the bolt clamp 101 is existing technology and will not be described in detail here. Workers can remove the damaged guide cylinder 2 by loosening the bolts on the bolt clamp 101 to ensure the constraint effect of the guide cylinder 2 on the metal powder.

[0034] Reference Figure 1 and Figure 2 The connecting ring 102 is adhered to the end of the guide cylinder 2 near the discharge pipe 02 by an adhesive. The connecting ring 102 is sleeved on the outside of the guide cylinder 2. The bottom surface of the connecting ring 102 overlaps the bolt clamp 101 to restrict the downward displacement of the guide cylinder 2 and prevent the guide cylinder 2 from falling off the discharge pipe 02.

[0035] Reference Figure 2 and Figure 3The end of the guide cylinder 2 away from the connecting ring 102 is folded upward and the adjusting ring 3 is installed with adhesive. The adjusting ring 3 is sleeved on the outside of the guide cylinder 2. The adjusting ring 3, the guide cylinder 2 and the connecting ring 102 are all coaxially arranged. The connecting ring 102 is provided with a plurality of adjusting components 4 that drive the adjusting ring 3 to move toward the connecting ring 102. In this embodiment, there are two adjusting components 4. The two adjusting components 4 are distributed on both radial sides of the connecting ring 102. The adjusting components 4 on both sides ensure that the force on the adjusting ring 3 is balanced.

[0036] Reference Figure 2 and Figure 3 The adjusting assembly 4 includes a mounting bracket 41 fixedly mounted on the connecting ring 102 near the end face of the adjusting ring 3. A take-up shaft 42 is rotatably connected to the mounting bracket 41. A pull rope 43 is wound on the take-up shaft 42. The free end of the pull rope 43 away from the take-up shaft 42 is fixedly connected to the adjusting ring 3. Each mounting bracket 41 has a threaded groove 411 on one side. The end of the take-up shaft 42 extends into the threaded groove 411 and is fixedly connected to a limit strip 421. The limit strip 421 is parallel to the axis of the take-up shaft 42. A driving component is provided in the threaded groove 411. The driving component is an outer nut 44 that is slidably sleeved on the take-up shaft 42. The outer nut 44 has a limit groove (not shown in the figure) that slides with the limit strip 421. The outer nut 44 is threadedly connected to the threaded groove 411. When the outer nut 44 is tightened inside the threaded groove 411, the adjusting ring 3 rises to the center height of the guide cylinder 2.

[0037] When the metal powder in the collection bucket 03 gradually accumulates to near the outlet of the guide tube 2, the worker places the outer nut 44 on the outer surface of the take-up shaft 42. Then, the worker screws the outer nut 44 into the threaded groove 411. When the outer nut 44 rotates, it drives the take-up shaft 42 to rotate synchronously through the limiting groove and the limiting strip 421. As the outer nut 44 is continuously screwed in, the take-up shaft 42 gradually winds up the pull rope 43. The pull rope 43 pulls the adjusting ring 3 upward, and the adjusting ring 3 in turn drives the outlet of the guide tube 2 to move upward. At this time, the friction between the outer nut 44 and the threaded groove 411 restricts the rotation of the take-up shaft 42, ensuring that the outlet of the guide tube 2 is stably located above the metal powder, reducing the probability that the metal powder in the collection bucket 03 will not pass the outlet of the guide tube 2, reducing the possibility of powder accumulation clogging the outlet of the guide tube 2, and thus ensuring that qualified powder enters the collection bucket 03 smoothly.

[0038] Reference Figure 4 and Figure 5To further reduce the waste of metal powder, a tapping mechanism 5 is provided on the adjusting ring 3. The tapping mechanism 5 includes multiple tapping blocks 51, which are evenly arranged around the circumference of the adjusting ring 3. In this embodiment, there are four adjusting rings 3. The surface of the tapping block 51 near the guide cylinder 2 is an arc surface. The inner wall of the adjusting ring 3 is provided with a sliding groove 31 that slides with the multiple tapping blocks 51. The inner wall of the sliding groove 31 is provided with a limiting groove 311. A limiting block 511 that slides with the limiting groove 311 is fixedly connected to the tapping block 51. The sliding cooperation between the limiting block 511 and the limiting groove 311 limits the movement range of the tapping block 51 and prevents the tapping block 51 from disengaging from the sliding groove 31 during operation.

[0039] Reference Figure 4 and Figure 5 The tapping mechanism 5 also includes a drive assembly 52 disposed on the adjusting ring 3. Specifically, the drive assembly 52 includes a drive ring 521. The adjusting ring 3 has an annular groove 32 that rotates with the drive ring 521. Each sliding groove 31 has a threading groove 33 communicating with the annular groove 32 on its inner sidewall. The threading groove 33 is parallel to the radial direction of the adjusting ring 3. A connecting rope 522 is threaded through the threading groove 33. One end of the connecting rope 522 extends into the nearby sliding groove 31 and is fixedly connected to the tapping block 51. The other end extends into the annular groove 32 and is fixedly connected to the drive ring 521.

[0040] Reference Figure 4 and Figure 5 A push spring 523 is provided inside the sliding groove 31. One end of the push spring 523 is fixedly connected to the inner side wall of the sliding groove 31 near the wire threading groove 33, and the other end is fixedly connected to the striking block 51. When the push spring 523 drives the limiting block 511 to abut against the end face of the limiting groove 311 near the guide cylinder 2, the striking block 51 squeezes the guide cylinder 2. At this time, the connecting rope 522 is in a relaxed state. When the limiting block 511 moves to the end of the limiting groove 311 near the wire threading groove 33, the push spring 523 is in a compressed state, and the striking block 51 disengages from the guide cylinder 2 and retracts into the sliding groove 31.

[0041] Reference Figure 4 and Figure 5 To facilitate worker operation, a lever 524 is fixedly connected to the upper surface of the drive ring 521. The end face of the adjusting ring 3 near the connecting ring 102 is provided with a lever groove 34 that slides with the lever 524. The lever groove 34 is an arc groove. When the lever 524 moves from one end of the lever groove 34 to the other end, the limiting block 511 moves from one end near the guide cylinder 2 to the other end.

[0042] The worker pushes the lever 524 to slide along the lever groove 34. The lever 524 drives the drive ring 521 to rotate in the ring groove 32. The drive ring 521 drives the end of the pull rope 43 to move in the ring groove 32. At this time, the pull rope 43 overcomes the elastic force of the push spring 523 and pulls the striking block 51 into the sliding groove 31. The striking block 51 is separated from the guide cylinder 2. When the lever 524 moves to the end of the lever groove 34, the worker releases the force on the lever 524. The push spring 523 pushes the striking block 51 out of the sliding groove 31 and strikes the surface of the guide cylinder 2. This cycle is repeated so that multiple striking blocks 51 repeatedly strike the guide cylinder 2, shaking the metal powder attached to the inside of the guide cylinder 2 into the collection bucket 03, further improving the collection efficiency of metal powder and reducing the waste caused by metal powder remaining inside the guide cylinder 2.

[0043] The implementation principle of a powder screening device in this application embodiment is as follows: qualified powder falls into the collection bucket 03 through the discharge pipe 02 and the guide cylinder 2. During the falling process, the powder is limited by the constraint range of the guide cylinder 2 and cannot be scattered significantly, thereby effectively reducing the possibility of trajectory deviation caused by its own kinetic energy, vibration airflow and workshop environment airflow, ensuring that most of the powder falls into the collection bucket 03 and reducing the waste of metal powder.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A powder screening device comprising a vibrating screen body (01) provided with a discharge pipe (02) below which a collection bucket (03) is arranged, characterized in that, The outer surface of the discharge pipe (02) is fitted with a guide tube (2), which is detachably connected to the discharge pipe (02) via a connecting component (1). The guide tube (2) is made of flexible material, and the inlet of the guide tube (2) is connected to the outlet of the discharge pipe (02), with the outlet extending into the inside of the collection bucket (03).

2. The powder screening equipment according to claim 1, characterized in that, The connecting assembly (1) includes a bolt clamp (101) and a connecting ring (102). The bolt clamp (101) clamps the guide cylinder (2) on the outer periphery of the discharge pipe (02). The connecting ring (102) is located at the end of the guide cylinder (2) near the discharge pipe (02). The bottom surface of the connecting ring (102) overlaps the upper surface of the bolt clamp (101).

3. The powder screening equipment according to claim 2, characterized in that, The guide tube (2) is folded upward at the end away from the connecting ring (102) and an adjusting ring (3) is provided thereon. The connecting ring (102) is provided with a plurality of adjusting components (4). The adjusting components (4) include a mounting bracket (41) provided on the bottom surface of the connecting ring (102). A winding shaft (42) is rotatably connected to the mounting bracket (41). A pull rope (43) is wound on the winding shaft (42). The end of the pull rope (43) away from the winding shaft (42) is provided on the adjusting ring (3). The mounting bracket (41) is provided with a driving member that drives the winding shaft (42) to rotate.

4. The powder screening equipment according to claim 3, characterized in that, The mounting bracket (41) has a threaded groove (411) on one side. The end of the take-up shaft (42) extends into the threaded groove (411) and is provided with a limiting strip (421). The driving component is an outer nut (44) that is slidably sleeved on the take-up shaft (42). The outer nut (44) has a limiting groove that slides with the limiting strip (421). The outer nut (44) is threadedly connected to the threaded groove (411).

5. The powder screening equipment according to claim 3, characterized in that, The adjusting ring (3) is provided with a tapping mechanism (5), which includes a plurality of tapping blocks (51) evenly arranged around the circumference of the adjusting ring (3). The inner sidewall of the adjusting ring (3) is provided with a sliding groove (31) that slides with the plurality of tapping blocks (51). The adjusting ring (3) is provided with a driving component (52), which drives the plurality of tapping blocks (51) to move synchronously back and forth along the sliding groove (31).

6. The powder screening equipment according to claim 5, characterized in that, The drive assembly (52) includes a drive ring (521). The adjustment ring (3) has an annular groove (32) that rotates with the drive ring (521). Each sliding groove (31) has a threading groove (33) that communicates with the annular groove (32) on its inner sidewall. A connecting rope (522) is provided in the threading groove (33). The connecting rope (522) connects the striking block (51) and the drive ring (521). A push spring (523) is provided in the sliding groove (31). The push spring (523) drives the striking block (51) to squeeze the guide cylinder (2). A lever (524) is provided on the drive ring (521). A lever groove (34) that slides with the lever (524) is provided in the inner sidewall of the annular groove (32).

7. The powder screening equipment according to claim 6, characterized in that, The inner wall of the sliding groove (31) is provided with a limiting groove (311), and the striking block (51) is provided with a limiting block (511) that slides in cooperation with the limiting groove (311). When the pushing spring (523) drives the limiting block (511) to abut against the end of the limiting groove (311) near the guide cylinder (2), the striking block (51) squeezes the guide cylinder (2), and the connecting rope (522) loosens.

8. The powder screening equipment according to claim 5, characterized in that, The surface of the striking block (51) near the guide tube (2) is an arc surface.

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