Screening machine

Abstract

A cover plate is arranged on the top of a shell, an annular groove is formed in the inner wall of the shell, a mounting ring is movably arranged on the annular groove, a vibrating mechanism is arranged between the mounting ring and the annular groove, a screen is detachably arranged on the mounting ring, a rotary drum movably connected with the inner wall of the shell is arranged on the upper side of the annular groove, and the rotary drum is driven by a rotating mechanism to rotate. At least one mounting vertical groove is formed in the inner wall of the rotating cylinder, a supporting plate capable of turning over up and down is hinged to the lower side of the mounting vertical groove, a sliding groove is formed in the side, close to the mounting vertical groove, of the supporting plate, and a cleaning piece is arranged on the side, away from the mounting vertical groove, of the supporting plate; a threaded block in sliding fit with the mounting vertical groove is in threaded fit with the screw rod, a driving rod is hinged to the threaded block, and the other end of the driving rod is hinged to a sliding block in sliding fit with the interior of the sliding groove, so that the problem that the medicine powder blocks the screen is solved, the medicine powder is prevented from being accumulated or adhered to the cleaning part during powder screening, and the powder screening effect and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder screening technical field, concretely relates to a powder screening machine. BACKGROUND

[0002] In the production process of medical products, the powder is often screened, and the screening methods mainly include vibration type and drum type. After screening, the powder is prepared into powders, granules, pills and tablets. The traditional impurity removal and screening device on the market is mostly used for screening the powder by using a screen mesh. In the actual production process, part of the powder is difficult to fall off after being inserted into the mesh hole, and the powder is accumulated on the screen mesh, which leads to incomplete screening of the powder by the screen mesh. At the same time, the powder accumulated on the screen mesh causes the screen plate to be blocked, which reduces the screening effect of the screen mesh. In the Chinese patent document with the publication number CN221908246U, a medicine vibrating powder screening machine is disclosed. The anti-blocking mechanism is arranged at the lower end surface of the screen frame. The connecting plate is driven to move up and down by the electric telescopic rod, and the top rod on the connecting plate is used to dredge the corresponding screen hole. However, in this way, the connecting plate is arranged below the screen mesh, and the powder falling on the screen mesh is accumulated on the connecting plate and the circular plate. The top rod needs to be aligned with the screen hole, which has high assembly precision requirements. Since the screen frame vibrates, the screen hole and the top rod are easily misaligned, the top rod is difficult to dredge the screen hole, and the screen mesh is easily damaged. SUMMARY

[0003] To solve the above technical problems, the utility model provides a powder screening machine, which solves the problem of powder blocking the screen mesh, avoids the powder from being accumulated or adhered to the cleaning part during powder screening, and improves the powder screening effect and efficiency.

[0004] The utility model discloses a powder screening machine, which solves the problem of powder blocking the screen mesh, avoids the powder from being accumulated or adhered to the cleaning part during powder screening, and improves the powder screening effect and efficiency.

[0005] Further, a through slot is arranged on the shell, the rotating mechanism comprises a driving motor fixed on the outer wall of the shell and a gear ring arranged on the outer wall of the rotating drum, an output end of the driving motor is fixed with a driving gear, and the driving gear partially penetrates through the through slot and meshes with the gear ring.

[0006] Further, the cleaning member comprises a mounting plate and brush hairs arranged on the mounting plate, the support plate is arranged with a mounting slot, the mounting plate is slidingly arranged in the mounting slot, and an elastic member is arranged between the mounting plate and the mounting slot.

[0007] Further, the vibrating mechanism comprises a vibrating motor arranged in the ring slot, an output end of the vibrating motor is connected with the mounting ring, and a damping spring is arranged between the ring slot and the mounting ring.

[0008] Further, an inner side of the mounting ring is arranged with a support ring, the support ring is arranged with a first mounting hole, the screen is arranged on a net rack, the net rack is arranged with a second mounting hole matched with the first mounting hole, and a connecting piece penetrates through the first mounting hole and the second mounting hole.

[0009] Further, an outer diameter of the net rack is smaller than an inner diameter of the rotating drum.

[0010] Further, a guide slot is arranged on the mounting vertical slot, and a guide block slidingly matched with the guide slot is arranged on the threaded block.

[0011] Further, the rotating drum is further arranged with at least one supporting rod extending to the center of the rotating drum, and a plurality of pushing rods extending to the screen are arranged on the supporting rod.

[0012] The beneficial effects of the utility model are as follows: the cover plate on the shell is used for sealing the inner cavity of the shell, the feeding port on the cover plate is used for feeding into the shell, and the discharging port at the bottom of the shell is used for discharging materials. The ring groove on the inner wall of the shell is used for accommodating the mounting ring, the mounting ring is used for mounting the screen, the screen can be detachably mounted on the mounting ring, which facilitates replacement of the screen, the vibration mechanism is started to drive the mounting ring to vibrate and further drive the screen to vibrate, the powder falling on the screen is vibrated to sieve the powder, the qualified powder falls from the screen hole, and the unqualified powder remains on the surface of the screen. The rotating drum movably connected with the inner wall of the shell is arranged on the upper side of the ring groove, at least one mounting vertical groove is arranged on the rotating drum, the mounting vertical groove is used for mounting the screw rod, the screw rod can be driven to rotate by the rotating motor, the screw rod is threadedly connected with the threaded block in sliding fit with the mounting vertical groove, when the screw rod rotates, the threaded block moves linearly on the screw rod. The support plate which can be flipped up and down is hingedly connected to the lower side of the mounting vertical groove, the side of the support plate close to the mounting vertical groove is provided with a sliding groove, the other end of the driving rod hingedly connected to the threaded block is hingedly connected with the sliding block in the sliding groove, since the sliding block is in sliding fit with the sliding groove, when the threaded block moves linearly on the screw rod to lift and lower, the sliding block is driven to slide in the sliding groove through the driving rod, and further the support plate is rotated around the hinge between the support plate and the rotating drum, thereby realizing the up and down flipping of the mounting plate. That is, when the screen needs to be cleaned by the cleaning piece, the threaded block is lowered, the sliding block is driven to move in the sliding groove towards the hinge between the support plate and the inner wall of the rotating drum through the driving rod when the threaded block is lowered, and further the support plate is flipped down, since the cleaning piece is arranged on the side of the support plate away from the mounting vertical groove, when the support plate is flipped to be perpendicular to the vertical sliding groove, the cleaning piece on the support plate can contact the screen, the rotating drum is driven to rotate by the rotating mechanism, and the cleaning piece can be driven to move on the screen, thereby cleaning the screen; when the screen does not need to be cleaned, the threaded block is raised, the sliding block is driven to move in the sliding groove away from the hinge through the driving rod after the threaded block is raised, the support plate is flipped up, the cleaning piece is flipped up to be separated from the screen at this time, and is folded on the inner wall of the rotating drum. In summary, in this way, the position of the cleaning piece can be adjusted to contact the screen when the screen needs to be cleaned, thereby facilitating the cleaning of the screen; when the screen does not need to be cleaned, the cleaning piece can be folded on the rotating drum, thereby not affecting the subsequent powder sieving operation, improving the powder sieving effect and efficiency.

[0013] The utility model will be further described in connection with the drawings and specific embodiments. DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a structural schematic view of the cleaning piece folding of the utility model;

[0016] Figure 3 It is Figure 1A magnified view of the details of A;

[0017] Figure 4 for Figure 1 A magnified view of the details of B.

[0018] In the attached diagram: 1-outer shell, 11-outlet, 12-ring groove, 13-through groove, 2-cover plate, 21-inlet, 3-mounting ring, 31-screen, 32-vibration mechanism, 33-damping spring, 34-mesh frame, 341-second mounting hole, 35-support ring, 351-first mounting hole, 4-rotating drum, 41-mounting vertical groove, 411-screw, 412-rotary motor, 413-threaded block, 414-guide groove, 415-guide block, 42-support plate, 421-sliding groove, 422-slider, 423-mounting groove, 43-cleaning component, 431-mounting plate, 432-brush bristles, 44-drive rod, 45-tooth ring, 46-elastic component, 5-rotation mechanism, 51-drive motor, 52-drive gear, 6-support rod, 61-push rod. Detailed Implementation

[0019] Referring to the accompanying drawings, the specific embodiments of this utility model will be described in detail.

[0020] Reference Figures 1 to 4 This utility model provides a powder screening machine, including a housing 1, a cover plate 2 on the top of the housing 1, a feed inlet 21 on the cover plate 2, and a discharge outlet 11 on the bottom of the housing 1. The cover plate 2 on the housing 1 is used to seal the inner cavity of the housing 1, the feed inlet 21 on the cover plate 2 is used to feed material into the housing 1, and the discharge outlet 11 at the bottom of the housing 1 is used to discharge material.

[0021] The inner wall of the shell 1 is provided with a ring groove 12, the mounting ring 3 is movably arranged on the ring groove 12, the vibration mechanism 32 is arranged between the mounting ring 3 and the ring groove 12, and the screen 31 is detachably arranged on the mounting ring 3. The vibration mechanism 32 can drive the mounting ring 3 to vibrate, and then drive the screen 31 to vibrate, so as to vibrate and sieve the powder falling on the screen 31. The qualified powder falls from the screen hole, and the unqualified powder remains on the upper surface of the screen 31. The vibration mechanism 32 comprises a vibration motor arranged in the ring groove 12, the output end of the vibration motor is connected with the mounting ring 3, and the damping spring 33 is arranged between the ring groove 12 and the mounting ring 3. When the vibration motor drives the mounting ring 3 to vibrate, the damping spring 33 can reduce the vibration, so as to ensure the vibration of the screen 31, reduce the influence of the screen 31 on the shell 1 during vibration, and improve the service life of the powder sieving machine. Further, the inner side of the mounting ring 3 is provided with a supporting ring 35, the supporting ring 35 is provided with a first mounting hole 351, the screen 31 is arranged on the net rack 34, the net rack 34 is provided with a second mounting hole 341 matched with the first mounting hole 351, the connecting piece passes through the first mounting hole 351 and the second mounting hole 341, and the net rack 34 and the supporting ring 35 are detachable, so that the screen 31 is convenient to replace. At this time, the connecting piece can be a bolt, the bolt passes through the first mounting hole 351 and the second mounting hole 341 and is connected with a nut, so as to fix the screen 31. The outer diameter of the net rack 34 is smaller than the inner diameter of the rotating drum 4, so that the screen 31 is convenient to take out from the shell 1.

[0022] The upper side of the ring groove 12 is movably connected with the rotating drum 4, and the rotating drum 4 is driven to rotate by the rotating mechanism 5. Further, the rotating drum 4 is further provided with at least one supporting rod 6 extending to the center of the rotating drum 4, and the supporting rod 6 is provided with a plurality of pushing rods 61 extending to the screen 31. At this time, when the rotating drum 4 rotates, the pushing rods 61 can be driven to rotate, so as to scatter the material on the screen 31, avoid the accumulation of powder on the screen 31, and improve the sieving efficiency.

[0023] The outer wall of the shell 1 is provided with a through groove 13, the rotating mechanism 5 comprises a driving motor 51 fixed on the outer wall of the shell 1 and a tooth ring 45 arranged on the outer wall of the rotating drum 4, the output end of the driving motor 51 is fixed with a driving gear 52, and the driving gear 52 partially passes through the through groove 13 and is engaged with the tooth ring 45. At this time, the driving motor 51 drives the driving gear 52 to rotate, the driving gear 52 drives the tooth ring 45 to rotate, and then drives the rotating drum 4 to rotate. Further, the rotating drum 4 is connected with the inner wall of the shell 1 through a bearing, the outer wall of the rotating drum 4 is provided with a concave ring, the tooth ring 45 is arranged in the concave ring, the gap between the rotating drum 4 and the inner wall of the shell 1 is reduced, and the possibility of impurities or dust entering the shell 1 and the rotating drum 4 is reduced.

[0024] The inner wall of the rotating drum 4 is provided with at least one installation vertical groove 41, a screw rod 411 is rotatably arranged in the installation vertical groove 41, one end of the screw rod 411 is fixed with a rotating motor 412, and a threaded block 413 is threadedly matched with the installation vertical groove 41. Specifically, the installation vertical groove 41 is provided with a guide groove 414, the threaded block 413 is provided with a guide block 415 which is slidably matched with the guide groove 414, at this time, the guide block 415 and the guide groove 414 slidably matched with each other play a role of rotation stopping of the threaded block 413, when the rotating motor 412 drives the screw rod 411 to rotate, the threaded block 413 does a reciprocating linear motion on the screw rod 411. The lower side of the installation vertical groove 41 is hingedly connected with a support plate 42 which can be flipped up and down, one side of the support plate 42 close to the installation vertical groove 41 is provided with a sliding groove 421 and the other side of the support plate 42 away from the installation vertical groove 41 is provided with a cleaning piece 43, the threaded block 413 is hingedly connected with a driving rod 44, the other end of the driving rod 44 is hingedly connected with a sliding block 422 which is slidably matched in the sliding groove 421, at this time, the sliding groove 421 is designed as a cavity with a large mouth and a small bottom, so as to avoid the sliding block 422 and the sliding groove 421 from being separated. At this time, when the threaded block 413 does a reciprocating linear motion on the screw rod 411 to lift and lower, the sliding block 422 is slid in the sliding groove 421 through the driving rod 44, and then the support plate 42 is pulled to rotate around the hinge between the support plate 42 and the rotating drum 4, so as to realize the up and down flipping of the installation plate 431.

[0025] Further, the cleaning piece 43 comprises an installation plate 431 and brush hairs 432 arranged on the installation plate 431, the support plate 42 is provided with an installation groove 423, the installation plate 431 is slidably arranged in the installation groove 423, and an elastic piece 46 is arranged between the installation plate 431 and the installation groove 423. In this way, through the arrangement of the elastic piece 46, the installation plate 431 and the brush hairs 432 have a tendency to move away from the support plate 42, when the support plate 42 is flipped down and the cleaning piece 43 contacts the screen 31, the elastic piece 46 pushes the brush hairs 432 to press against the screen 31, so as to improve the cleaning effect on the screen 31, at the same time, due to the arrangement of the elastic piece 46, the cleaning brush and the installation plate 431 are flexibly contacted with the screen 31, and the screen 31 can also be prevented from being damaged when the support plate 42 is flipped over.

[0026] In this way, when the cleaning piece 43 needs to clean the screen 31, the rotating motor 412 drives the screw rod 411 to rotate, so that the threaded block 413 moves downward, and when the threaded block 413 moves downward, the sliding block 422 is driven by the driving rod 44 to move in the sliding groove 421 to the direction close to the hinged point between the support plate 42 and the inner wall of the rotating drum 4, thereby pushing the support plate 42 to overturn downward, and since the side of the support plate 42 away from the vertical slot 41 is provided with the cleaning piece 43, when the support plate 42 overturns to be perpendicular to the vertical sliding groove 421, the cleaning piece 43 on the support plate 42 can contact the screen 31, and by driving the rotating mechanism 5 to rotate the rotating drum 4, the cleaning piece 43 can be driven to move on the screen 31, so that the cleaning piece 43 cleans the screen 31; when the screen 31 does not need to be cleaned, the threaded block 413 moves upward, and after the threaded block 413 moves upward, the sliding block 422 is driven by the driving rod 44 to move in the sliding groove 421 to the direction away from the hinged point, so that the support plate 42 overturns upward, at this time, the cleaning piece 43 is driven to overturn upward and is separated from the screen 31, and is folded and stored on the inner wall of the rotating drum 4, and does not affect the subsequent screening operation.

[0027] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0028] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A screening machine, characterized in that, Including shell (1), the top of shell (1) is equipped with cover plate (2), cover plate (2) is equipped with feed inlet (21), the bottom of shell (1) is equipped with discharge port (11), The inner wall of shell (1) is equipped with ring groove (12), the ring groove (12) is movably provided with mounting ring (3), the mounting ring (3) is provided with vibration mechanism (32) between the ring groove (12), the mounting ring (3) is detachably provided with screen (31) on the mounting ring (3), The upper side of ring groove (12) is provided with rotary drum (4) movably connected with the inner wall of shell (1), rotary drum (4) is driven to rotate through rotating mechanism (5), the inner wall of rotary drum (4) is provided with at least one mounting vertical groove (41), the lower side of mounting vertical groove (41) is hinged with support plate (42) that can be turned up and down, the side of support plate (42) close to mounting vertical groove (41) is provided with sliding groove (421) and the side away from mounting vertical groove (41) is provided with cleaning piece (43), the inner side of mounting vertical groove (41) is rotatably provided with screw rod (411) with one end fixed with rotary motor (412), the screw rod (411) is threadedly connected with threaded block (413) that is slidingly connected with mounting vertical groove (41), the threaded block (413) is hinged with driving rod (44), the other end of driving rod (44) is hinged with sliding block (422) that is slidingly connected in sliding groove (421).

2. The sifter of claim 1, wherein, The outer wall of shell (1) is provided with through groove (13), the rotating mechanism (5) includes driving motor (51) fixed on the outer wall of shell (1) and gear ring (45) provided on the outer wall of rotary drum (4), the output end of driving motor (51) is fixed with driving gear (52), the driving gear (52) partially penetrates through the through groove (13) and engages with the gear ring (45).

3. The sifter of claim 1, wherein, The cleaning piece (43) includes mounting plate (431) and brush (432) provided on the mounting plate (431), the support plate (42) is provided with mounting groove (423), the mounting plate (431) is slidingly provided in the mounting groove (423), the mounting plate (431) and the mounting groove (423) are provided with elastic element (46) therebetween.

4. The sifter of claim 1, wherein, The vibration mechanism (32) includes vibration motor provided in the ring groove (12), the output end of the vibration motor is connected with the mounting ring (3), the ring groove (12) and the mounting ring (3) are provided with damping spring (33) therebetween.

5. The sifter of claim 1, wherein, The inner side of the mounting ring (3) is provided with support ring (35), the support ring (35) is provided with first mounting hole (351), the screen (31) is provided on the net rack (34), the net rack (34) is provided with second mounting hole (341) matched with the first mounting hole (351), the connecting piece penetrates through the first mounting hole (351) and the second mounting hole (341).

6. The sifter of claim 5, wherein, The outer diameter of the net rack (34) is less than the inner diameter of the rotary drum (4).

7. The sifter of claim 1, wherein, The installation vertical slot (41) is provided with a guide slot (414), and the threaded block (413) is provided with a guide block (415) in sliding fit with the guide slot (414).

8. The sifter of claim 1, wherein, The rotating drum (4) is further provided with at least one supporting rod (6) extending to the center of the rotating drum (4), and the supporting rod (6) is provided with a plurality of pushing rods (61) extending to the screen (31).

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