Anti-blocking screening machine for powder production

Abstract

The utility model provides an anti-blocking material screening machine for powder production. The anti-blocking material screening machine comprises a material screening barrel and a material screening disc. The lower end of the screening barrel extends towards one side and inclines downwards to form a discharging port, a plurality of supporting assemblies distributed in the circumferential direction at intervals are connected to the edge of the lower end of the screening barrel, and a vibrator is fixed to the outer bottom of the screening barrel; a supporting ring is fixed to the inner wall of the screening barrel, an annular electromagnet is fixed to the supporting ring, and the screening disc is arranged on the inner side of the screening barrel and supported on the annular electromagnet. A plurality of screening holes are formed in the middle of the lower end of the screening disc; a movable plate is arranged below the screening disc, the movable plate is vertically connected with the screening disc in a sliding mode, and the upper end face of the movable plate is provided with inserting needles vertically corresponding to the multiple screening holes one to one; a cylinder is fixed in the middle of the lower end of the screening barrel; a piston rod of the cylinder extends into the screening barrel; according to the screening machine, the screening holes can be dredged mechanically, and the screening machine does not need to be shut down in the process of dredging the screening holes.

Description

Technical Field

[0001] The utility model relates to the technical field of screening machines, and more specifically, to a screening machine for powder production that prevents blockage. Background Art

[0002] During the powder production process, powders often agglomerate. In order to separate the agglomerated powders, a screening machine is required. At present, after the screening machine on the market screens powders for a period of time, the sieve holes in the screening machine will be blocked by powders. At this time, the screening machine needs to be shut down and the sieve holes in the screening machine need to be dredged manually, which has the disadvantages of troublesome operation, time-consuming and laborious, and will affect the normal screening of powders. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a screening machine for powder production that prevents blockage, which can dredge the sieve holes in a mechanized manner and does not require the screening machine to be shut down during the process of dredging the sieve holes.

[0004] The utility model provides a screening machine for powder production that prevents blockage, including a screening cylinder and a screening plate; the lower end of the screening cylinder extends towards one side and slopes downwards to form a discharge port, and several support components are connected to the edge of the lower end of the screening cylinder at circumferential intervals, and a vibrator is fixed on the outer bottom of the screening cylinder; a support ring is fixed on the inner wall of the screening cylinder, and an annular electromagnet is fixed on the support ring, and the screening plate is arranged inside the screening cylinder and supported on the annular electromagnet; several sieve holes are arranged in the middle of the lower end of the screening plate; a movable plate is arranged below the screening plate, and the movable plate is vertically slidably connected with the screening plate, and insertion pins corresponding to the several sieve holes one by one are arranged on the upper end surface of the movable plate; when the movable plate slides upwards, each insertion pin is used to vertically insert and penetrate through the corresponding sieve hole to dredge the sieve hole; a cylinder is fixed in the middle of the lower end of the screening cylinder, and the piston rod of the cylinder extends into the screening cylinder. When the piston rod of the cylinder extends, the piston rod of the cylinder is used to push the movable plate upwards.

[0005] After the utility model adopts the above structure, during the process of the screening machine screening powders, when the sieve holes are blocked by powders, the piston rod of the cylinder can be controlled to stretch and retract once so that the piston rod of the cylinder pushes the movable plate once. After the movable plate is pushed, each insertion pin on the movable plate can vertically insert and penetrate through the corresponding sieve hole to dredge the sieve hole, that is, it can dredge the sieve holes in a mechanized manner and does not require the screening machine to be shut down during the process of dredging the sieve holes, thus bringing convenience to the dredging of the sieve holes.

[0006] In a possible implementation, the anti-blocking powder screening machine for powder production further includes a plurality of bolts evenly distributed circumferentially. The screw part of each bolt is movably inserted upward through the edge of the movable plate, and the upper end of each bolt is threadedly connected to the lower end of the screening tray; a first spring is sleeved outside the screw part of each bolt, and the upper and lower ends of each first spring respectively abut against the lower end of the screening tray and the upper end of the movable plate. After adopting this structure, under the action of the bolts, the movable plate can be reliably slidably connected vertically to the lower end of the screening tray. Under the action of the first spring, when the piston rod of the cylinder releases the pushing state on the movable plate, the first spring can reliably drive the movable plate to slide downward and reset.

[0007] In a possible implementation, the upper end surface of the movable plate forms an arc surface that is high in the middle and low at the edges. After adopting this structure, when the screening machine is screening powder normally, the powder falling from the sieve holes can fall onto the upper end surface of the movable plate. Since the upper end surface of the movable plate forms an arc surface that is high in the middle and low at the edges, the powder falling onto the movable plate can more smoothly fall onto the inner bottom of the screening cylinder and be discharged through the discharge port.

[0008] In a possible implementation, an annular chamfered surface is formed on the outer side surface of the upper end of each pin. After providing an annular chamfered surface on the outer side surface of the upper end of each pin, when the movable plate slides upward relative to the screening tray, the annular chamfered surface can cooperate with the inner wall of the sieve hole for guiding so that the pin can be inserted into the sieve hole and penetrate through the sieve hole, thereby facilitating the pin to dredge the sieve hole.

[0009] In a possible implementation, a plurality of handles are fixed to the upper end of the screening tray at circumferential intervals. Through the arrangement of the handles, when the screening tray needs to be taken out of the screening cylinder, the handles can be used for pulling by hand, thereby facilitating the removal of the screening tray from the screening cylinder.

[0010] In a possible implementation, each support assembly includes a support rod and a support base. The upper end of each support rod is fixed to the lower end of the screening cylinder. A sliding cavity with an open upper end is provided inside each support base. A second spring is provided inside each sliding cavity. The lower end of each support rod is inserted into the sliding cavity inside the corresponding support base and abuts against the upper end of the corresponding second spring. After adopting this support assembly, under the action of the second spring, when the vibrator drives the screening cylinder to vibrate, the screening cylinder can be reliably floated up and down, thereby improving the screening efficiency and effect of the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a partial cross-sectional structural schematic diagram of the present invention;

[0012] Figure 2 is Figure 1 the enlarged structural schematic diagram at A in

[0013] Figure 3 It is a schematic cross-sectional structure diagram of the support component. Specific embodiments

[0014] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0015] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0016] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0017] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] See Figures 1-3As shown in the figure, an anti-blocking screening machine for powder production according to an embodiment of the present application includes a screening cylinder 1 and a screening plate 2; the lower end of the screening cylinder 1 extends towards one side and slopes downwards to form a discharge port 11, and several support components 3 are connected to the edge of the lower end of the screening cylinder 1 and are circumferentially spaced apart; a vibrator 4 is fixed on the outer bottom of the screening cylinder 1; a support ring 5 is fixed on the inner wall of the screening cylinder 1, and an annular electromagnet 6 is fixed on the support ring 5, and the screening plate 2 is arranged inside the screening cylinder 1 and supported on the annular electromagnet 6; several screening holes 21 are arranged in the middle of the lower end of the screening plate 2; a movable plate 7 is arranged below the screening plate 2, and the movable plate 7 is vertically slidably connected to the screening plate 2, and insertion pins 71 corresponding to the several screening holes 21 one by one in the vertical direction are arranged on the upper end surface of the movable plate 7; when the movable plate 7 slides upwards, each insertion pin 71 is used to vertically insert into and penetrate through the screening hole 21 at the corresponding position to dredge the screening hole 21; a cylinder 8 is fixed in the middle of the lower end of the screening cylinder 1, and the piston rod of the cylinder 8 extends into the screening cylinder 1, and when the piston rod of the cylinder 8 extends, the piston rod of the cylinder 8 is used to push the movable plate 7 upwards.

[0019] The anti-blocking screening machine for powder production further includes several bolts 72 that are circumferentially and evenly distributed. The screw part of each bolt 72 is movably inserted through the edge of the movable plate 7 from bottom to top, and the upper end of each bolt 72 is threadedly connected to the lower end of the screening plate 2; a first spring 73 is sleeved outside the screw part of each bolt 72, and the upper and lower ends of each first spring 73 are respectively abutted against the lower end of the screening plate 2 and the upper end of the movable plate 7; by adopting this structure, under the action of the bolts, the movable plate can be reliably vertically slidably connected to the lower end of the screening plate, and under the action of the first spring, when the piston rod of the cylinder releases the pushing state of the movable plate, the first spring can reliably drive the movable plate to slide downwards to reset.

[0020] The upper end surface of the movable plate 7 forms an arc surface that is high in the middle and low at the edges; by adopting this structure, when the screening machine is screening normally, the powder falling from the screening holes can fall onto the upper end surface of the movable plate. Since the upper end surface of the movable plate forms an arc surface that is high in the middle and low at the edges, the powder falling onto the movable plate can more smoothly fall onto the inner bottom of the screening cylinder and be discharged through the discharge port.

[0021] An annular chamfer surface 711 is formed on the outer side surface of the upper end of each insertion pin 71; by arranging an annular chamfer surface on the outer side surface of the upper end of each insertion pin, when the movable plate slides upwards relative to the screening plate, the annular chamfer surface can cooperate with the inner wall of the screening hole for guiding so as to facilitate the insertion pin to insert into and penetrate through the screening hole, thereby facilitating the insertion pin to dredge the screening hole.

[0022] Several handles 22 that are circumferentially spaced apart are fixed on the upper end of the screening plate 2; through the arrangement of the handles, when the screening plate needs to be taken out of the screening cylinder, the handles can be pulled by hand, so as to facilitate taking out the screening plate from the screening cylinder.

[0023] Each support component 3 includes a support rod 31 and a support base 32. The upper end of each support rod 31 is fixed to the lower end of the screening cylinder 1. A sliding cavity 321 with an upper opening is provided inside each support base 32. A second spring 33 is provided inside each sliding cavity 321. The lower end of each support rod 31 is inserted into the sliding cavity 321 inside the corresponding support base 32 and abuts against the upper end of the corresponding second spring 33. By adopting such a support component, under the action of the second spring, when the vibrator drives the screening cylinder to vibrate, the screening cylinder can float up and down reliably, thereby improving the screening efficiency and effect of the powder.

[0024] When using the present utility model, first pour the powder to be screened into the screening tray, and then turn on the power supplies of the vibrator and the annular electromagnet. When the annular electromagnet is energized, it can magnetically attract the screening tray. When the vibrator works, it can drive the screening cylinder and the screening tray to vibrate. When the screening tray vibrates, the unagglomerated powder can pass through the sieve holes and fall onto the inner bottom of the screening cylinder, and finally the powder can be discharged through the discharge port, while the agglomerated powder remains on the screening tray. After the powder screening is completed, turn off the power supplies of the vibrator and the annular electromagnet. At this time, the vibrator stops working, and the annular electromagnet releases the magnetic attraction on the screening tray, so that the staff can take out the screening tray from the screening cylinder and pour out the agglomerated powder remaining on the screening tray. During the above process of screening the powder, when the sieve holes are blocked by the powder, the staff can control the piston rod of the cylinder to extend and retract once. When the piston rod of the cylinder extends, the piston rod of the cylinder can push up the movable plate. At this time, each needle on the movable plate can vertically insert into and penetrate the corresponding sieve hole to dredge the sieve hole (during the process of the needle dredging the sieve hole, since the screening tray is in the state of being magnetically attracted by the annular electromagnet, the screening tray can be prevented from moving upward when the needle dredges the sieve hole). When the piston rod of the cylinder contracts, the movable plate can automatically drive the needle to move down and reset.

[0025] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A sieving machine for powder production with anti-clogging, characterized in that: The invention comprises a screening drum (1) and a screening plate (2); the lower end of the screening drum (1) extends toward one side and tilts downward to form a discharge port (11); the edge of the lower end of the screening drum (1) is connected to a plurality of support components (3) distributed at intervals in the circumferential direction; a vibrator (4) is fixed to the outer bottom of the screening drum (1); a support ring (5) is fixed to the inner wall of the screening drum (1); an annular electromagnet (6) is fixed to the support ring (5); the screening plate (2) is arranged on the inner side of the screening drum (1) and supported on the annular electromagnet (6); a plurality of screening holes (21) are arranged in the middle of the lower end of the screening plate (2); the lower end of the screening plate (2) is provided with a plurality of sieve holes (21); A movable plate (7) is provided on the side, the movable plate (7) being vertically slidably connected to the sieve plate (2), and an upper end surface of the movable plate (7) is provided with insertion pins (71) corresponding vertically to a plurality of the sieve holes (21); when the movable plate (7) slides upward, each of the insertion pins (71) is used to vertically insert into and penetrate the sieve hole (21) at a corresponding position to clear the sieve hole (21); a cylinder (8) is fixed to the middle of the lower end of the sieve barrel (1), and a piston rod of the cylinder (8) extends into the sieve barrel (1); when the piston rod of the cylinder (8) is extended, the piston rod of the cylinder (8) is used to push the movable plate (7) upward.

2. The anti-clogging powder production screening machine according to claim 1, characterized in that: The anti-clogging powder production screening machine also includes a plurality of bolts (72) uniformly distributed in the circumferential direction, the screw portion of each bolt (72) being movably inserted from bottom to top at the edge of the movable plate (7), and the upper end of each bolt (72) being threadedly connected to the lower end of the screening plate (2); the outer portion of the screw portion of each bolt (72) is sleeved with a first spring (73), and the upper and lower ends of each first spring (73) are respectively abutted against the lower end of the screening plate (2) and the upper end of the movable plate (7).

3. The anti-clogging powder production screening machine according to claim 1 or 2, characterized in that: The upper end surface of the movable plate (7) forms an arc surface with a high middle and low edges.

4. The anti-clogging powder production screening machine according to claim 1, characterized in that: The outer side surface of the upper end of each insertion pin (71) forms an annular chamfered surface (711).

5. The anti-clogging powder production screening machine according to claim 1, characterized in that: A plurality of handles (22) distributed at circumferential intervals are fixed to the upper end of the screening plate (2).

6. The anti-clogging powder production screening machine according to claim 1, characterized in that: Each of the support assemblies (3) comprises a support rod (31) and a support seat (32); the upper end of each of the support rods (31) is fixed to the lower end of the screening drum (1); the inner side of each of the support seats (32) is provided with a sliding cavity (321) with an upper end open; the interior of each of the sliding cavities (321) is provided with a second spring (33); the lower end of each of the support rods (31) is inserted into the sliding cavity (321) on the inner side of the corresponding support seat (32) and abuts against the upper end of the corresponding second spring (33).

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