CN115156036B - Pneumatic vibration type powder screening device - Google Patents
Pneumatic vibration type powder screening device Download PDFInfo
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- CN115156036B CN115156036B CN202210792496.5A CN202210792496A CN115156036B CN 115156036 B CN115156036 B CN 115156036B CN 202210792496 A CN202210792496 A CN 202210792496A CN 115156036 B CN115156036 B CN 115156036B
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- screen
- pneumatic
- hopper
- feeding
- cover
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/52—Cleaning with brushes or scrapers
- B07B1/526—Cleaning with brushes or scrapers with scrapers
- B07B1/528—Cleaning with brushes or scrapers with scrapers the scrapers being rotating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/55—Cleaning with fluid jets
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- Combined Means For Separation Of Solids (AREA)
Abstract
The application relates to the technical field of screening machines, and particularly discloses a pneumatic vibration type powder screening device; the device comprises a conical hopper and a screen assembly, wherein a fixed ring is connected to the conical hopper, a first silica gel pad is arranged on the upper surface of the fixed ring, the screen assembly comprises a screen body ring, a second silica gel pad is coated on the outer surface of the screen body ring, a cross-shaped screen frame is connected in the screen body ring, a screen is arranged on the upper surface of the cross-shaped screen frame, a first pneumatic vibrator is arranged at the center of the lower surface of the cross-shaped screen frame, a second pneumatic vibrator is arranged on the outer surface of the conical hopper, a hopper cover is connected to the upper end of the conical hopper, one side of the hopper cover is connected to a feeding device extending into the upper part of the screen, and a rotary stirring mechanism acting on the upper surface of the screen is rotationally connected to the hopper cover; the powder screening device provided by the application can improve the screening efficiency of materials, simultaneously effectively reduce the noise generated when the screen is vibrated, and can quickly dredge the blocked screen under the action of high-pressure air, so that the powder screening device has an excellent use effect.
Description
Technical Field
The application relates to the technical field of screening machines, and particularly discloses a pneumatic vibration type powder screening device.
Background
In industrial production, the materials are generally required to be initially crushed or sieved, and particularly before powdery or granular materials are processed, the materials are generally uniformly dispersed in a hopper so as to avoid the influence of caking on the post-treatment. The current material screening processing apparatus sets up for hopper and screen cloth combination to need set up vibrating motor on the screen cloth in order to increase the speed of sieving, but when carrying out screening processing to powdery material, the vibrating motor of its use can adsorb the dust, causes the potential safety hazard, and increase the material screening speed through the vibrating motor of setting and often can lead to the noise of during operation too big.
In addition, when the existing hopper and screen combined type material screening treatment device screens powder, once caking and the like appear in the powder, the screen holes on the screen are easy to be blocked, and at the moment, the screen is required to be dredged by manual shutdown, so that the labor intensity is high, the operation is complex, and the screening efficiency of the whole material is seriously influenced. Therefore, the application provides a pneumatic vibration type powder screening device which can effectively avoid or solve the technical problems.
Disclosure of Invention
The application aims to provide a pneumatic vibration type powder screening device, which aims to solve the problems of the existing hopper and screen combined type material screening treatment device when screening powder.
The application is realized by the following technical scheme:
the utility model provides a pneumatic vibration formula powder sieving mechanism, includes toper hopper and screen assembly, the upper end internal connection of toper hopper has the solid fixed ring, the upper surface of solid fixed ring is provided with first silica gel pad, the screen assembly is including setting up the screen frame ring of first silica gel pad top, and the surface cladding of screen frame ring has the second silica gel pad, be connected with the cross screen frame in the screen frame ring, the upper surface of cross screen frame is provided with the screen cloth, the lower surface center department of cross screen frame installs first pneumatic vibrator, the surface of toper hopper is provided with the second pneumatic vibrator;
the upper end of the conical hopper is connected with a hopper cover, one side of the hopper cover is connected with a feeding device extending into the upper part of the screen, and the hopper cover is rotationally connected with a rotary stirring mechanism acting on the upper surface of the screen.
As the concrete setting of above-mentioned scheme, rotatory stirring mechanism includes pivot, scraping plate subassembly and pneumatic drive assembly, the pivot rotates to be connected on the bearing of bucket cover centre of a circle department, the upper surface center department of cross type screen frame is connected with inserts a section of thick bamboo, the diapire of inserting a section of thick bamboo is connected with the bearing frame through first spring, the lower extreme of pivot is provided with the protruding axle that is connected with the bearing frame, scraping plate subassembly radial connection is in the lower extreme of pivot, pneumatic drive assembly sets up the upper surface at the bucket cover and is used for driving the pivot rotation.
As the specific setting of above-mentioned scheme, pneumatic drive subassembly includes the compressed gas cover of sealing connection at the bucket cover upper surface and connects the pneumatic impeller at the pivot top, the side of compressed gas cover is tangent to be connected with compressed gas and advances the pipe.
As the further setting of above-mentioned scheme, the air inlet channel has been seted up along the axis direction to the pivot, and the upper end opening setting of air inlet channel, lower extreme seal arrangement, the lower extreme of pivot is connected with a plurality of radial connecting pipes, and the tip and the air inlet channel lower extreme of radial connecting pipe are linked together, the lower surface interval of radial connecting pipe is connected with a plurality of air nozzles, scrape the flitch subassembly and be connected with radial connecting pipe through the connecting strip, be provided with the baffle in the compressed gas cover, the centre of a circle department of baffle is provided with sealing bearing, sealing bearing stretches into the inner chamber upper end of compressed gas cover is passed on the top of pivot, pneumatic impeller fixed connection is in the compressed gas cover inner chamber of baffle below, is located the vent has been seted up on the baffle of compressed gas inlet pipe contralateral side.
As the specific setting of the scheme, the number of the radial connecting pipes connected with the lower end of the rotating shaft is 2-3, and the number of the air nozzles arranged on each radial connecting pipe is 3-5.
As a further setting of above-mentioned scheme, scrape flitch subassembly and include connecting strip and scraper blade, the flexible groove has been seted up to the lower surface of last connecting strip, the upper end of scraper blade is connected with the end strip that is arranged in flexible groove, be connected with a plurality of second springs between end strip and the flexible groove roof.
As a specific arrangement of the above scheme, the first pneumatic vibrator is a piston reciprocating pneumatic vibrator.
As the specific setting of above-mentioned scheme, the second vibrator is turbine pneumatic vibrator, the second vibrator is provided with two, and installs in the both ends of toper hopper surface symmetry.
As a further arrangement of the scheme, the upper surfaces of the two ends of the screen body ring are connected with gripping parts.
As a further setting of above-mentioned scheme, loading attachment includes hopper and feeding cylinder, feeding cylinder's inner stretches into and sets up in the bucket cover, and is provided with the unloading pipe at feeding cylinder's inner lower surface, the hopper is connected with feeding cylinder's outer end upper surface, be provided with feeding spiral leaf in the feeding cylinder, feeding cylinder's outer terminal surface is provided with the feeding motor that is connected with feeding spiral leaf.
The beneficial effects are that:
1) According to the application, the connection mode between the screen assembly and the hopper is changed into the abutting connection between the silica gel pad and the silica gel pad, meanwhile, the piston reciprocating type pneumatic vibrator is arranged on the lower surface of the cross-shaped screen frame, the turbine pneumatic vibrator is arranged on the outer surface of the hopper and is connected to the cross-shaped screen frame through the pneumatic vibrator, the vibration effect of the turbine pneumatic vibrator is transmitted to the whole screen, and meanwhile, the arranged turbine pneumatic vibrator can accelerate the blanking speed of the screened material along the inner wall of the hopper, so that the screening efficiency of the material is improved, and meanwhile, the noise generated when the screen is vibrated is effectively reduced. In addition, the pneumatic vibrator is selected to replace the vibration motor, so that potential safety hazards caused by dust adsorption of the vibration motor can be effectively avoided, and the safety of equipment is greatly improved.
2) According to the application, the pneumatic driving assembly is arranged to drive the rotary stirring mechanism to rotate on the upper surface of the screen mesh, so that materials piled on the screen mesh can be flattened uniformly under the action of the scraping plate in the rotating process, on one hand, the sieving efficiency of the materials is accelerated, and on the other hand, the screen mesh blocking caused by the piling of the materials can be prevented.
3) The application also arranges the air inlet channel in the spindle, while the air inlet channel is communicated with radial connecting pipe of the lower end of spindle, the scraper blade is rotated by the high-pressure gas, the high-pressure gas can enter into the radial connecting pipe along the air inlet channel, then spray out from the air nozzle on the radial connecting pipe, and the sprayed high-pressure gas acts on the surface of the screen, the material blocked on the screen is washed off, the dredging effect on the screen is greatly improved, it rotates synchronously with the scraper blade, the dredging action area of the high-pressure gas is wide; the whole device has novel structural design, strong linkage and excellent use effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a schematic view of the internal planar structure of the present application;
FIG. 3 is a schematic perspective view of a conical hopper and screen assembly of the present application;
FIG. 4 is a schematic perspective exploded view of the screen assembly of the present application;
FIG. 5 is a schematic perspective view of a conical hopper according to the present application;
FIG. 6 is an enlarged schematic view of the structure of FIG. 2A according to the present application;
FIG. 7 is an enlarged schematic view of the structure of FIG. 2A according to the present application;
FIG. 8 is a schematic perspective view of a hopper cover, a rotary material shifting mechanism and a feeding device in the application;
FIG. 9 is a schematic perspective view of a rotary kick-out mechanism in accordance with the present application;
fig. 10 is a perspective exploded view of the scraper assembly of the present application.
Wherein:
1-a conical hopper, 101-a fixed ring and 102-a first silica gel pad;
2-screen assembly, 201-screen ring, 202-cross-shaped screen frame, 203-screen, 204-grip;
3-a first pneumatic vibrator, 4-a second pneumatic vibrator and 5-a bucket cover;
6-feeding devices, 601-feeding hoppers, 602-feeding cylinders, 603-discharging pipes, 604-feeding spiral blades and 605-feeding motors;
the device comprises a 7-rotation stirring mechanism, 701-a rotating shaft, 7011-an air inlet channel, 702-a scraping plate component, 7021-an upper connecting strip, 7022-a scraping plate, 7023-a telescopic groove, 7024-an end strip, 7025-a second spring, 703-a pneumatic driving component, 7031-a compressed air cover, 7032-a pneumatic impeller, 7033-a compressed air inlet pipe, 7034-a partition plate, 7035-a sealing bearing, 704-a protruding shaft, 705-a plug cylinder, 7051-a first spring, 706-a bearing seat, 707-a radial connecting pipe and 708-an air nozzle.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The present application will be described in detail with reference to fig. 1 to 10 in conjunction with examples.
Example 1
Embodiment 1 discloses pneumatic vibration formula powder sieving mechanism, refer to fig. 2, fig. 3, fig. 4 and fig. 5, the main part of this powder sieving mechanism includes toper hopper 1 and screen assembly 2, this toper hopper 1 upper and lower narrow setting, and the welding has solid fixed ring 101 on the upper end open-ended inner wall of toper hopper 1, be provided with first silica gel pad 102 simultaneously on solid fixed ring 101's upper surface, be equipped with annular draw-in groove on this solid fixed ring 101 when specifically setting, set up in inserting the draw-in groove with first silica gel pad 102, and first silica gel pad 102 upper end is hemispherical shape.
The screen assembly 2 comprises a screen ring 201 arranged above a first silica gel pad 102, a second silica gel pad is coated on the outer surface of the screen ring 201, and noise generated during vibration can be effectively solved while the vibration effect is ensured through the abutting action between the silica gel pad and the silica gel pad. A cross-shaped screen frame 202 is connected to the screen ring 201, and a screen 203 is provided on the upper surface of the cross-shaped screen frame 202. A first pneumatic vibrator 3 is installed at the center of the lower surface of the cross-shaped screen frame 202, and the first pneumatic vibrator 3 is a piston reciprocating type pneumatic vibrator. The outer surface of the conical hopper 1 is provided with a second pneumatic vibrator 4, the second vibrator 4 is a turbine pneumatic vibrator, and the second vibrator 4 is two and is symmetrically arranged at two ends of the outer surface of the conical hopper 1 respectively.
In addition, in order to facilitate rapid removal of the screen 203 from the upper surface of the cross-shaped screen frame 202, the grip portions 204 are also connected to the upper surfaces of both ends of the screen ring 201 in this embodiment 1. When the screen 203 needs to be replaced or overhauled, the screen 203 can be directly taken out by the hand-held gripping part 204.
Example 2
Embodiment 2 discloses powder sieving mechanism of quick mediation of pneumatic vibration formula, refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, this powder sieving mechanism's main part includes toper hopper 1 and screen assembly 2, this toper hopper 1 upper and lower narrow setting, and the welding has solid fixed ring 101 on the upper end open-ended inner wall of toper hopper 1, be provided with first silica gel pad 102 simultaneously on solid fixed ring 101's upper surface, be equipped with annular draw-in groove on this solid fixed ring 101 when specifically setting, set up first silica gel pad 102 insert the draw-in groove in, and first silica gel pad 102 upper end is hemispherical shape.
The screen assembly 2 comprises a screen ring 201 arranged above a first silica gel pad 102, a second silica gel pad is coated on the outer surface of the screen ring 201, and noise generated during vibration can be effectively solved while the vibration effect is ensured through the abutting action between the silica gel pad and the silica gel pad. A cross-shaped screen frame 202 is connected to the screen ring 201, and a screen 203 is provided on the upper surface of the cross-shaped screen frame 202. A first pneumatic vibrator 3 is installed at the center of the lower surface of the cross-shaped screen frame 202, and the first pneumatic vibrator 3 is a piston reciprocating type pneumatic vibrator. The outer surface of the conical hopper 1 is provided with a second pneumatic vibrator 4, the second vibrator 4 is a turbine pneumatic vibrator, and the second vibrator 4 is two and is symmetrically arranged at two ends of the outer surface of the conical hopper 1 respectively. To facilitate quick removal of the screen 203 from the upper surface of the cross-shaped frame 202, gripping portions 204 are also attached to the upper surfaces of both ends of the screen ring 201. When the screen 203 needs to be replaced or overhauled, the screen 203 can be directly taken out by the hand-held gripping part 204.
In this embodiment 2, a hopper cover 5 is further connected to the upper end of the tapered hopper 1, and a feeder 6 extending above the screen 203 is connected to one side of the hopper cover 5. When the feeding device is specifically arranged, the feeding device 6 comprises a feeding hopper 601 and a feeding cylinder 602, wherein the inner end of the feeding cylinder 602 extends into the bucket cover 5 to be arranged, a discharging pipe 603 is arranged on the lower surface of the inner end of the feeding cylinder 602, then the feeding hopper 601 is connected with the upper surface of the outer end of the feeding cylinder 602, a feeding spiral blade 604 is arranged in the feeding cylinder 602, and a feeding motor 605 connected with the feeding spiral blade 604 is arranged on the outer end face of the feeding cylinder 602. The feeding screw 604 is driven to rotate in the feeding cylinder 602 by the action of the feeding motor 605, then the powdery material is conveyed along the feeding cylinder 602 by the action of the screw feeding screw 604, and finally discharged from the discharging pipe 603 and falls on the upper surface of the screen 203 for subsequent screening.
Referring to fig. 2, 6, 7 and 8, the rotary kick-out mechanism 7 acting on the upper surface of the screen 203 is also rotatably connected to the hopper cover 5 in this embodiment 2. The rotary stirring mechanism 7 comprises a rotating shaft 701, a scraping plate assembly 702 and a pneumatic driving assembly 703. The rotary shaft 701 is rotatably connected to a bearing at the center of the bucket cover 5, the center of the upper surface of the cross-shaped screen frame 202 is connected with a cylinder 705, the bottom wall of the cylinder 705 is connected with a first spring 7051, the upper end of the first spring 7051 is connected with a bearing seat 706 positioned in the cylinder 705, and then the lower end of the rotary shaft 701 is provided with a protruding shaft 704 connected with the bearing seat 706. The scraper assembly 702 is radially coupled to the lower end of the rotating shaft 701.
When the pneumatic driving assembly 703 is specifically arranged, the pneumatic driving assembly comprises a compressed air cover 7031 which is connected to the upper surface of the bucket cover 5 in a sealing way, and a pneumatic impeller 7032 which is connected to the top end of the rotating shaft 701, wherein a compressed air inlet pipe 7033 is connected to the side surface of the compressed air cover 7031, and the compressed air inlet pipe 7033 and the compressed air cover 7031 are arranged tangentially.
Referring to fig. 10, the scraper assembly 702 includes an upper connecting bar 7021 and a scraper 7022, a telescopic slot 7023 is formed in the lower surface of the upper connecting bar 7021, an end bar 7024 located in the telescopic slot 7023 is connected to the upper end of the scraper 7022, and a plurality of second springs 7025 are connected between the end bar 7024 and the top wall of the telescopic slot 7023.
The rotary stirring mechanism 7 provided in this embodiment 2 is started when the screen holes on the screen 203 are blocked, high-pressure gas is introduced into the compressed gas inlet pipe 7033, then the high-pressure gas acts on the pneumatic impeller 7032 to enable the rotating shaft 701 to rotate, and the scraper assembly 702 is driven to rotate against the upper surface of the screen 203 in the rotating process of the rotating shaft 701, at this time, the scraper 7022 uniformly spreads the agglomerated powder on the upper surface of the screen 203 and has a certain crushing effect, so that the agglomerated powder hopper can pass through the screen 203 to prevent the screen 203 from being blocked due to accumulation of materials, and a certain dredging effect is provided.
Example 3
Embodiment 3 discloses powder sieving mechanism of pneumatic vibration formula pulse gas mediation, refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the main part of this powder sieving mechanism includes toper hopper 1 and screen assembly 2, this toper hopper 1 upper and lower narrow setting, and the welding has solid fixed ring 101 on the open-ended inner wall in the upper end of toper hopper 1, be provided with first silica gel pad 102 simultaneously on solid fixed ring 101's upper surface, be equipped with annular draw-in groove on this solid fixed ring 101 when specifically setting, set up first silica gel pad 102 insert the draw-in groove in, and first silica gel pad 102 upper end is hemispherical.
The screen assembly 2 comprises a screen ring 201 arranged above a first silica gel pad 102, a second silica gel pad is coated on the outer surface of the screen ring 201, and noise generated during vibration can be effectively solved while the vibration effect is ensured through the abutting action between the silica gel pad and the silica gel pad. A cross-shaped screen frame 202 is connected to the screen ring 201, and a screen 203 is provided on the upper surface of the cross-shaped screen frame 202. A first pneumatic vibrator 3 is installed at the center of the lower surface of the cross-shaped screen frame 202, and the first pneumatic vibrator 3 is a piston reciprocating type pneumatic vibrator. The outer surface of the conical hopper 1 is provided with a second pneumatic vibrator 4, the second vibrator 4 is a turbine pneumatic vibrator, and the second vibrator 4 is two and is symmetrically arranged at two ends of the outer surface of the conical hopper 1 respectively. To facilitate quick removal of the screen 203 from the upper surface of the cross-shaped frame 202, gripping portions 204 are also attached to the upper surfaces of both ends of the screen ring 201. When the screen 203 needs to be replaced or overhauled, the screen 203 can be directly taken out by the hand-held gripping part 204.
In this embodiment 3, a hopper cover 5 is further connected to the upper end of the tapered hopper 1, and a feeder 6 extending above the screen 203 is connected to one side of the hopper cover 5. When the feeding device is specifically arranged, the feeding device 6 comprises a feeding hopper 601 and a feeding cylinder 602, wherein the inner end of the feeding cylinder 602 extends into the bucket cover 5 to be arranged, a discharging pipe 603 is arranged on the lower surface of the inner end of the feeding cylinder 602, then the feeding hopper 601 is connected with the upper surface of the outer end of the feeding cylinder 602, a feeding spiral blade 604 is arranged in the feeding cylinder 602, and a feeding motor 605 connected with the feeding spiral blade 604 is arranged on the outer end face of the feeding cylinder 602. The feeding screw 604 is driven to rotate in the feeding cylinder 602 by the action of the feeding motor 605, then the powdery material is conveyed along the feeding cylinder 602 by the action of the screw feeding screw 604, and finally discharged from the discharging pipe 603 and falls on the upper surface of the screen 203 for subsequent screening.
Referring to fig. 2, 6, 7 and 8, in embodiment 3, a rotary kick-out mechanism 7 acting on the upper surface of a screen 203 is also rotatably connected to a hopper cover 5. The rotary stirring mechanism 7 comprises a rotating shaft 701, a scraping plate assembly 702 and a pneumatic driving assembly 703. The rotary shaft 701 is rotatably connected to a bearing at the center of the bucket cover 5, the center of the upper surface of the cross-shaped screen frame 202 is connected with a cylinder 705, the bottom wall of the cylinder 705 is connected with a first spring 7051, the upper end of the first spring 7051 is connected with a bearing seat 706 positioned in the cylinder 705, and then the lower end of the rotary shaft 701 is provided with a protruding shaft 704 connected with the bearing seat 706. The scraper assembly 702 is radially coupled to the lower end of the rotating shaft 701.
When the pneumatic driving assembly 703 is specifically arranged, the pneumatic driving assembly comprises a compressed air cover 7031 which is connected to the upper surface of the bucket cover 5 in a sealing way, and a pneumatic impeller 7032 which is connected to the top end of the rotating shaft 701, wherein a compressed air inlet pipe 7033 is connected to the side surface of the compressed air cover 7031, and the compressed air inlet pipe 7033 and the compressed air cover 7031 are arranged tangentially.
Referring to fig. 10, the scraper assembly 702 includes an upper connecting bar 7021 and a scraper 7022, a telescopic slot 7023 is formed in the lower surface of the upper connecting bar 7021, an end bar 7024 located in the telescopic slot 7023 is connected to the upper end of the scraper 7022, and a plurality of second springs 7025 are connected between the end bar 7024 and the top wall of the telescopic slot 7023.
The rotary stirring mechanism 7 provided in this embodiment 3 is started when the holes on the screen 203 are blocked, high-pressure gas is introduced into the compressed gas inlet pipe 7033, then the high-pressure gas acts on the pneumatic impeller 7032 to rotate the rotating shaft 701, and the scraper assembly 702 is driven to rotate against the upper surface of the screen 203 in the rotating process of the rotating shaft 701, at this time, the scraper 7022 uniformly spreads the agglomerated powder on the upper surface of the screen 203, and has a certain crushing effect, so that the agglomerated powder can pass through the screen 203, and the screen 203 is prevented from being blocked due to material accumulation.
Referring to fig. 6, 8 and 9, in embodiment 3, an air intake passage 7011 is further provided in the shaft 701 in the central axis direction, and the air intake passage 7011 is provided with an upper end opening and a lower end sealing. At the lower end of the rotating shaft 701, a plurality of radial connection pipes 707 are connected, typically, the radial connection pipes 707 are disposed in two or three, and an end of each radial connection pipe 707 communicates with the lower end of the air inlet passage 7011, and then a plurality of air nozzles 708 are connected to the lower surface of the radial connection pipe 707 at intervals, typically, between 3 and 5 air nozzles 708 are disposed on each radial connection pipe 707. The stripper plate assembly 702 is then connected to the radial connecting tube 707 by connecting strips 708.
Meanwhile, in this embodiment 3, a partition 7034 is further provided in the compressed gas cover 7031, a seal bearing 7035 is provided at the center of the partition 7034, and the top end of the rotary shaft 701 extends into the upper end of the inner cavity of the compressed gas cover 7031 through the seal bearing 7035. Then the pneumatic impeller 7032 is fixedly connected in the inner cavity of the compressed gas cover 7031 below the partition 7034, and a vent is arranged on the partition 7034 positioned at the opposite side of the compressed gas inlet pipe 7033.
The rotary material stirring mechanism 7 designed in this embodiment 3 is further provided on the basis of embodiment 2, when compressed gas acts on the pneumatic impeller 7032 to rotate the rotary shaft 701, the compressed gas enters the upper end of the inner cavity of the compressed gas cover 7031 from the air vent on the partition 7034, then enters the radial connecting pipes 707 along the air inlet passages 7011 respectively, and finally is ejected from the air nozzles 708. Therefore, the high-pressure gas of the whole scraper 7022 is continuously sprayed to the screen 203 from the air nozzle 708 in the rotating process, so that the blocked screen holes are broken, the effective dredging effect is realized, and the using effect of the whole device is greatly improved.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (6)
1. The utility model provides a pneumatic vibration type powder sieving mechanism, includes toper hopper (1) and screen assembly (2), its characterized in that, the upper end internal connection of toper hopper (1) has solid fixed ring (101), gu the upper surface of fixed ring (101) is provided with first silica gel pad (102), screen assembly (2) are including setting up screen frame ring (201) in first silica gel pad (102) top, and the surface cladding of screen frame ring (201) has the second silica gel pad, be connected with cross screen frame (202) in screen frame ring (201), the upper surface of cross screen frame (202) is provided with screen cloth (203), first pneumatic vibrator (3) are installed to the lower surface center department of cross screen frame (202), the surface of toper hopper (1) is provided with second pneumatic vibrator (4);
the upper end of the conical hopper (1) is connected with a hopper cover (5), one side of the hopper cover (5) is connected with a feeding device (6) extending into the upper part of the screen (203), and the hopper cover (5) is rotationally connected with a rotary stirring mechanism (7) acting on the upper surface of the screen (203);
the first pneumatic vibrator (3) is a piston reciprocating type pneumatic vibrator;
the rotary stirring mechanism (7) comprises a rotating shaft (701), a scraping plate assembly (702) and a pneumatic driving assembly (703), wherein the rotating shaft (701) is rotationally connected to a bearing at the center of a bucket cover (5), a plug cylinder (705) is connected to the center of the upper surface of the cross-shaped screen frame (202), a bearing seat (706) is connected to the bottom wall of the plug cylinder (705) through a first spring (7051), a protruding shaft (704) connected with the bearing seat (706) is arranged at the lower end of the rotating shaft (701), the scraping plate assembly (702) is radially connected to the lower end of the rotating shaft (701), and the pneumatic driving assembly (703) is arranged on the upper surface of the bucket cover (5) and used for driving the rotating shaft (701) to rotate;
the pneumatic driving assembly (703) comprises a compressed gas cover (7031) which is connected to the upper surface of the bucket cover (5) in a sealing manner and a pneumatic impeller (7032) which is connected to the top end of the rotating shaft (701), and a compressed gas inlet pipe (7033) is tangentially connected to the side surface of the compressed gas cover (7031);
the utility model discloses a gas inlet device, including a rotary shaft (701), a baffle (7034) is provided with in the inner chamber of gas inlet tube (7033), inlet channel (7011) has been seted up along the axis direction to pivot (701), and the upper end opening of inlet channel (7011) sets up, the lower extreme seal arrangement, the lower extreme of pivot (701) is connected with a plurality of radial connecting pipes (707), and the tip and the inlet channel (7011) lower extreme of radial connecting pipe (707) are linked together, the lower surface interval of radial connecting pipe (707) is connected with a plurality of air nozzles (708), scraper subassembly (702) are connected with radial connecting pipe (707) through connecting strip (7021), be provided with baffle (7034) in the gas cover (7031), the centre of a circle department of baffle (7034) is provided with sealed bearing (7035), the inner chamber upper end that stretches into gas cover (7031) is passed to the top of pivot (701), pneumatic impeller (7032) fixed connection is in the gas cover (7031) inner chamber of baffle (7033) below.
2. The pneumatic vibration type powder screening device according to claim 1, wherein the number of radial connection pipes (707) connected to the lower end of the rotating shaft (701) is 2-3, and the number of air nozzles (708) provided on each radial connection pipe (707) is 3-5.
3. The pneumatic vibration powder screening device according to any one of claims 1-2, wherein the scraper assembly (702) comprises an upper connecting bar (7021) and a scraper (7022), a telescopic slot (7023) is formed in the lower surface of the upper connecting bar (7021), an end bar (7024) located in the telescopic slot (7023) is connected to the upper end of the scraper (7022), and a plurality of second springs (7025) are connected between the end bar (7024) and the top wall of the telescopic slot (7023).
4. The pneumatic vibration type powder screening device according to claim 1, wherein the second pneumatic vibrators (4) are turbine pneumatic vibrators, and the second pneumatic vibrators (4) are symmetrically arranged at two ends of the outer surface of the conical hopper (1).
5. The pneumatic vibration type powder screening device according to claim 1, wherein both end upper surfaces of the screen body ring (201) are connected with grip portions (204).
6. The pneumatic vibration type powder screening device according to claim 1, wherein the feeding device (6) comprises a feeding hopper (601) and a feeding cylinder (602), the inner end of the feeding cylinder (602) stretches into the hopper cover (5) to be arranged, a blanking pipe (603) is arranged on the lower surface of the inner end of the feeding cylinder (602), the feeding hopper (601) is connected with the upper surface of the outer end of the feeding cylinder (602), a feeding spiral blade (604) is arranged in the feeding cylinder (602), and a feeding motor (605) connected with the feeding spiral blade (604) is arranged on the outer end face of the feeding cylinder (602).
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