CN115532351B - Vibration screening device for coal ash conveying and working method thereof - Google Patents
Vibration screening device for coal ash conveying and working method thereof Download PDFInfo
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- CN115532351B CN115532351B CN202211425684.0A CN202211425684A CN115532351B CN 115532351 B CN115532351 B CN 115532351B CN 202211425684 A CN202211425684 A CN 202211425684A CN 115532351 B CN115532351 B CN 115532351B
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- vibration
- extrusion head
- screen
- plate
- sieve
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- 239000010883 coal ash Substances 0.000 title claims abstract description 43
- 238000012216 screening Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 103
- 230000005540 biological transmission Effects 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 239000010881 fly ash Substances 0.000 claims abstract description 6
- 230000003068 static effect Effects 0.000 claims description 43
- 238000007789 sealing Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 239000002956 ash Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 abstract description 20
- 239000008187 granular material Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/14—Stamping mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a vibration screening device for conveying coal ash, which comprises a shell assembly, a screen plate, an extrusion mechanism and a vibration mechanism, wherein a material inlet for inputting materials is arranged above the shell assembly, a material outlet for outputting materials is arranged below the shell assembly, the screen plate is obliquely arranged between the material inlet and the material outlet, the extrusion mechanism is arranged on the top surface of the screen plate and can extrude and crush large materials on the screen, the vibration mechanism comprises a vibrator and a vibration transmission assembly, the inner end of the vibration transmission assembly is fixedly connected below the screen plate, the outer end of the vibration transmission assembly is connected with the vibrator, and the vibrator is positioned on the outer side of the shell assembly. The invention also discloses a working method of the vibration screening device for conveying the coal ash. The invention can crush and screen the fly ash slag in the pneumatic conveying system, so that the conveying is smoother, and the conveying efficiency is improved.
Description
Technical Field
The invention relates to the technical field of coal ash conveying equipment, in particular to a vibration screening device for coal ash conveying and a working method thereof.
Background
The thermal power plant, the thermal power plant or the cement industry are produced by using a coal-fired boiler as main operation equipment, and a large amount of fly ash is generated in the working process of the coal-fired boiler. The fly ash stored in ash hoppers of boiler economizers and electric precipitators is conveyed in a closed manner by adopting a pneumatic pipeline at the present stage. However, impurities such as slag with larger particles in the fly ash are easy to accumulate and block in the pipeline, and interfere with the normal use of the pipeline. Although, the existing hopper is filtered and decontaminated by a simple filter screen, the effect is poor, and meanwhile, the hopper is inconvenient to clean and has a plurality of inconveniences in use.
Accordingly, there is a need to develop a vibratory screen for coal ash transport and a method of operating the same that address the above-described drawbacks.
Disclosure of Invention
The invention aims to provide a vibration screening device for coal ash conveying and a working method thereof, which can crush and screen coal ash slag in a pneumatic conveying system, and the conveying is smoother, so that the conveying efficiency is improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
The invention relates to a vibration screening device for coal ash conveying, which comprises a shell assembly, a screen plate, an extrusion mechanism and a vibration mechanism, wherein a material inlet for material input is arranged above the shell assembly, a material outlet for material output is arranged below the shell assembly, the screen plate is obliquely arranged between the material inlet and the material outlet, the extrusion mechanism is arranged on the top surface of the screen plate and can extrude and crush massive materials on the screen, the vibration mechanism comprises a vibrator and a vibration transmission assembly, the inner end of the vibration transmission assembly is fixedly connected below the screen plate, the outer end of the vibration transmission assembly is connected with the vibrator, and the vibrator is positioned on the outer side of the shell assembly.
Further, the sieve plate is installed in the shell assembly through the sieve plate screws, a plurality of mounting holes are formed in two long side edges of the sieve plate, and the sieve plate screws penetrate through holes in the side wall of the shell assembly and then are connected to the mounting holes.
Further, the inner end head of the sieve plate screw is installed in the installation hole through a flexible rubber thread sleeve.
Further, extrusion mechanism includes quiet extrusion head, moves extrusion head and linear drive unit, quiet extrusion head sets up the sieve bottom, move the extrusion head setting and be in the sieve high end and with quiet extrusion head sets up relatively, linear drive unit installs on the outer wall of casing assembly, linear drive unit's work end is sealed to be visited the casing assembly inner chamber and connect move extrusion head rear.
Further, the screen plate is a bar screen, the direction of the screen bars is along the moving direction of the movable extrusion head, the extrusion part of the movable extrusion head is in a continuous tooth shape, the appearance of the extrusion part of the static extrusion head is meshed and matched with the movable extrusion head, and the tooth shape of the two sides of the static extrusion head is smaller than the middle tooth shape.
Furthermore, a gap is reserved between the static extrusion head and the sieve plate, the static extrusion head is mounted on the side wall of the shell assembly through a pressure head bolt at the back, and the pressure head bolt penetrates through a pressure head mounting through hole of the shell assembly to be connected with a threaded hole at the back of the static extrusion head.
Further, the vibration transmission assembly comprises a vibration transmission rod, a vibration adapter and a via hole combination, wherein the flange at the inner end of the vibration transmission rod is connected to the bottom surface of the sieve plate, the via hole combination is installed on a through hole of the shell assembly and is supported in a sealing manner at the middle part of the vibration transmission rod, the outer end of the vibration transmission rod is connected with the vibration adapter, and the vibration adapter is connected with the vibrator.
Further, the via hole combination comprises a clamping plate, a rubber backing plate and a clamping bolt, wherein the clamping plate and the rubber backing plate are respectively and symmetrically stacked on two sides of a through hole of the shell assembly and locked through the through clamping bolt, and a round hole is formed in the middle of the rubber backing plate on the inner side and clamped in an annular groove in the middle of the vibration transmission rod.
Further, the shell assembly comprises a main shell and a side cover plate, wherein the main shell is of a side wall opening structure, and the side cover plate is buckled on the side wall opening in a sealing manner through flange bolts.
The working method of the vibration screening device for conveying the coal ash comprises the steps of crushing and screening the coal ash in a pneumatic conveying pipeline by using the vibration screening device for conveying the coal ash, and screening after extruding and crushing large-particle sundries by adopting a mode of carrying out auxiliary crushing on a screen plate.
Compared with the prior art, the invention has the beneficial technical effects that:
According to the vibrating screen for conveying the coal ash and the working method thereof, through the arrangement of the screen plate and the vibrating mechanism, the screen plate receives the materials falling from the feed inlet for vibrating screening, and the large materials on the screen plate are extruded and crushed by the extruding mechanism on the top surface of the screen plate, so that the blocking influence of the large materials on pipeline conveying is reduced. Through the setting of vibrator and biography subassembly of shaking, set up the vibrator in the casing assembly outside, can reduce the influence of dust material to the vibrator, improve the life of equipment. The vibration screening device for coal ash conveying can crush and screen coal ash slag in a pneumatic conveying system, so that the conveying is smoother, and the conveying efficiency is improved.
In addition, the sieve plate is picked up by the screws of the plurality of sieve plates at two sides, and the sieve plate is arranged in the inner cavity of the shell assembly in a floating mode, so that the vibration of the sieve plate can be isolated relative to the fact that the sieve plate is directly fastened to the inner side wall of the shell assembly, and the vibration is prevented from being transmitted to the conveying pipeline; the rubber thread sleeve is arranged between the inner end head of the sieve plate screw and the sieve plate, so that vibration can be further isolated, and vibration noise is reduced. By arranging the static extrusion head at the bottom end of the sieve plate, the static extrusion head can bear and accumulate slag, granules and the like at a low position, so that the movable extrusion head can conveniently carry out centralized extrusion and crushing; the linear driving unit specifically adopts an air cylinder, so that the linear driving unit has better impact crushing capability, and particularly can better hammer and punch and crush slag and aggregates in the final stage of the travel. The screen plate adopts a bar screen, so that materials can slide downwards conveniently, undersize products fall down, and oversize products are accumulated to an extrusion part of the static extrusion head; the static extrusion head and the dynamic extrusion head adopt meshed tooth shapes, so that slag and granules can be held in the extrusion process, and are prevented from sliding out and being extruded from the side edges. The static extrusion head and the sieve plate are separated, so that the static extrusion head does not participate in vibration of the sieve plate but only in extrusion, the amplitude influence on the vibrating sieve plate is reduced, meanwhile, the outward transmission of vibration is avoided, and the running stability of equipment is improved. The vibration adapter is arranged at the outer end of the vibration transmission rod, so that the vibrator can be conveniently arranged, and the vibrator is suitable for the installation of various types of vibrators; through the arrangement of the via hole combination, the via hole position of the vibration transmission rod can be supported and sealed; the vibration transmission rod is supported by the rubber backing plate through the via hole combination, vibration can be reduced and transmitted to the shell, and the two sides of the vibration transmission rod are symmetrically provided with the rubber backing plate round hole to be clamped with the ring groove, so that double sealing can be formed at the position of reciprocating vibration, and the sealing performance is good. The side cover plate is detachably connected to the side wall opening of the main shell, so that the side cover plate is convenient to open and then overhauls and maintains the inside, and the service life of the equipment is prolonged. Through the setting up of viewing aperture, the condition in the observation equipment cavity in the operation of being convenient for carries out the trouble judgement.
According to the working method of the vibration screening device for conveying the coal ash, disclosed by the invention, large-block sundries such as slag, granules and the like entering a conveying pipeline can be automatically treated in time by adopting an auxiliary crushing mode on a screen, so that the pipeline blockage caused by long-term accumulation of the large-block sundries is avoided, the maintenance frequency is reduced, and the labor is saved.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a schematic diagram of a three-dimensional structure of a vibratory screening device for coal ash transportation according to the present invention;
FIG. 2 is a schematic view of another perspective view of a vibratory screening machine for transporting coal ash according to the present invention;
FIG. 3 is a schematic perspective view of a vibratory screen machine for transporting coal ash according to the present invention with a side cover removed;
FIG. 4 is a schematic diagram of a vibratory screen for coal ash transport of the present invention in a cross-sectional front view;
FIG. 5 is a schematic perspective view of a vibratory screening machine for coal ash transportation of the present invention with a housing removed;
Fig. 6 is a schematic diagram of the front view of the screen deck of fig. 5;
fig. 7 is a schematic diagram of a partial enlarged structure of the I portion in fig. 4.
Reference numerals illustrate: 1. a main housing; 101. a feed inlet; 102. a discharge port; 103. an observation port; 104. the pressure head is provided with a via hole; 2. a side cover plate; 3. a sieve plate; 4. a sieve plate screw; 5. a static extrusion head; 501. a threaded hole; 6. a dynamic extrusion head; 7. a cylinder; 8. a vibration transmission rod; 9. a vibration adapter; 10. a clamping plate; 11. a rubber backing plate; 12. clamping a bolt; 13. a pressure head bolt.
Detailed Description
The invention provides a vibration screening device for coal ash conveying and a working method thereof, which can crush and screen coal ash slag in a pneumatic conveying system, and the conveying is smoother, so that the conveying efficiency is improved.
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to the drawings, FIG. 1 is a schematic perspective view of a vibratory screening machine for coal ash transportation according to the present invention; FIG. 2 is a schematic view of another perspective view of a vibratory screening machine for transporting coal ash according to the present invention; FIG. 3 is a schematic perspective view of a vibratory screen machine for transporting coal ash according to the present invention with a side cover removed; FIG. 4 is a schematic diagram of a vibratory screen for coal ash transport of the present invention in a cross-sectional front view; FIG. 5 is a schematic perspective view of a vibratory screening machine for coal ash transportation of the present invention with a housing removed; fig. 6 is a schematic diagram of the front view of the screen deck of fig. 5; fig. 7 is a schematic diagram of a partial enlarged structure of the I portion in fig. 4.
In one embodiment, as shown in fig. 1 to 7, a vibratory screening device for coal ash transportation includes a housing assembly, a screen plate 3, an extrusion mechanism, and a vibration mechanism. The upper part of the shell assembly is provided with a material inlet 101 for inputting materials, the lower part of the shell assembly is provided with a material outlet 102 for outputting materials, and the material inlet 101 and the material outlet 102 are respectively connected to a pipeline for conveying the fly ash through flanges. The sieve plate 3 is positioned in the relatively airtight cavity of the shell assembly, and the sieve plate 3 is obliquely arranged between the feeding hole 101 and the discharging hole 102. The extruding mechanism is arranged on the top surface of the screen plate 3 and can extrude and crush massive materials on the screen plate. The vibrating mechanism comprises a vibrator and a vibration transmission assembly, wherein the inner end of the vibration transmission assembly is fixedly connected below the screen plate 3, and the outer end of the vibration transmission assembly is connected with the vibrator. The vibrator is disposed outside the housing assembly.
Through setting up of sieve 3 and vibration mechanism, the material that feed inlet 101 falls is accepted to sieve 3 carries out vibration screening, and big piece material on the sieve is by the extrusion mechanism on the top surface of sieve 3 extrudees the breakage, consequently, has reduced the jam influence of big piece material to pipeline transportation. Through the setting of vibrator and biography subassembly of shaking, set up the vibrator in the casing assembly outside, can reduce the influence of dust material to the vibrator, improve the life of equipment. The vibration screening device for coal ash conveying can crush and screen coal ash slag in a pneumatic conveying system, so that the conveying is smoother, and the conveying efficiency is improved.
In a specific embodiment of the present invention, as shown in fig. 1 to 3, 5 and 6, the screen plate 3 is installed in the housing assembly by means of screen plate screws 4, and a plurality of installation holes are formed in two long sides of the screen plate 3, and the installation holes are arranged at equal intervals along the length direction of the screen plate. The sieve plate screw 4 passes through the through hole on the side wall of the shell assembly and then is connected to the mounting hole.
Specifically, the inner end of the screen plate screw 4 is mounted into the mounting hole by a flexible rubber thread bushing.
The sieve plate 3 is picked up by the plurality of sieve plate screws 4 on two sides, the sieve plate 3 is arranged in the inner cavity of the shell assembly in a floating mode, and vibration of the sieve plate 3 can be isolated relative to the fact that the sieve plate 3 is directly fastened to the inner side wall of the shell assembly, and vibration is prevented from being transmitted to a conveying pipeline; the vibration can be further isolated and the vibration noise can be reduced by the rubber thread sleeve between the inner end of the sieve plate screw 4 and the sieve plate 3.
In one embodiment of the present invention, as shown in fig. 4 to 6, the pressing mechanism includes a static pressing head 5, a dynamic pressing head 6, and a linear driving unit. The static extrusion head 5 is arranged at the bottom end of the screen plate 3, and the dynamic extrusion head 6 is arranged at the high end of the screen plate 3 and opposite to the static extrusion head 5. The linear driving unit is arranged on the outer wall of the shell assembly, and the working end of the linear driving unit is hermetically inserted into the inner cavity of the shell assembly and is connected to the rear of the dynamic extrusion head 6.
Specifically, as shown in fig. 1 to 6, the linear driving unit specifically adopts a cylinder 7, the cylinder 7 is installed on the outer wall of the shell assembly through a pull rod, and the end of a piston rod of the cylinder 7 is in threaded connection with a threaded hole in the middle position of the back of the movable extrusion head 6. Obviously, the linear driving unit in the invention can also adopt any one of a hydraulic cylinder, an electric push rod and a motor crank block mechanism, so that the linear repeated driving of the motion extrusion head 6 can be realized, and similar deformation modes fall into the protection scope of the invention.
By arranging the static extrusion head 5 at the bottom end of the screen plate 3, the static extrusion head 5 can bear and accumulate slag, granules and the like at a low position, so that the dynamic extrusion head 6 can conveniently carry out centralized extrusion and crushing; the linear driving unit specifically adopts the air cylinder 7, so that the impact crushing capability is better, and particularly, the impact crushing device can be used for hammering and punching to crush slag and aggregates better in the final stage of the travel.
Specifically, as shown in fig. 3, 5 and 6, the screen plate 3 is a bar screen, the direction of the screen bar is along the moving direction of the movable extrusion head 6, the extrusion part of the movable extrusion head 6 is in continuous tooth shape, the shape of the extrusion part of the static extrusion head 5 is meshed and matched with the movable extrusion head 6, and the tooth shape of the two sides of the static extrusion head 5 is smaller than the middle tooth shape. In a specific embodiment, as shown in fig. 6, the dynamic extrusion head 6 adopts a three-tooth profile, and the static extrusion head 5 adopts a four-tooth profile for engagement.
The screen plate 3 adopts a bar screen, so that materials can slide downwards conveniently, undersize products fall down, and oversize products are accumulated to the extrusion part of the static extrusion head 5; the static extrusion head 5 and the dynamic extrusion head 6 adopt meshed tooth shapes, so that slag and granules can be held in the extrusion process, and are prevented from sliding out and being extruded from the side edges.
Specifically, as shown in fig. 3 and 4, a gap is left between the static extrusion head 5 and the screen plate 3, the static extrusion head 5 is mounted on the side wall of the shell assembly through a head bolt 13 on the back, and the head bolt 13 passes through a head mounting via hole of the shell assembly to be connected with a threaded hole 501 on the back of the static extrusion head 5.
The static extrusion head 5 and the screen plate 3 are separated, so that the static extrusion head 5 does not participate in vibration of the screen plate 3 and only participates in extrusion, the influence on the vibration amplitude of the vibrating screen plate 3 is reduced, meanwhile, the outward transmission of vibration is avoided, and the running stability of equipment is improved.
In a specific embodiment of the present invention, as shown in fig. 2, 4 and 7, the vibration transmission assembly includes a vibration transmission rod 8, a vibration adapter 9 and a via hole combination, the inner end flange of the vibration transmission rod 8 is connected to the bottom surface of the screen plate 3, and the screen plate 3 is not provided with a screen slot at the connection position with the inner end flange of the vibration transmission rod 8. The via hole combination is arranged on the through hole of the shell assembly, the via hole combination is supported in a sealing manner at the middle part of the vibration transmission rod 8, the outer end of the vibration transmission rod 8 is connected with the vibration adapter 9, and the flange plate of the vibration adapter 9 is connected with the vibrator. The vibrator may be a pneumatic or electric vibrator.
Specifically, as shown in fig. 7, the via hole assembly includes two sets of clamping plates 10, rubber backing plates 11 and clamping bolts 12, the clamping plates 10 and the rubber backing plates 11 are respectively and symmetrically stacked on two sides of a through hole of the shell assembly and are locked by the through clamping bolts 12, and a round hole is formed in the middle of the inner rubber backing plate 11 and clamped in a ring groove in the middle of the vibration transmission rod 8. The width of the ring groove is slightly larger than the thickness of the rubber backing plate 11.
The vibration adapter 9 is arranged at the outer end of the vibration transmission rod 8, so that the vibrator can be conveniently arranged, and the vibration transmission rod is suitable for the installation of various types of vibrators; through the arrangement of the via hole combination, the via hole position of the vibration transmission rod 8 can be supported and sealed; the vibration transmission rod 8 is supported by the rubber backing plate 11 through the via hole combination, vibration transmission to the shell can be reduced, the circular holes of the rubber backing plate 11 are symmetrically arranged on two sides to be clamped with the annular grooves, double sealing can be formed at the position of reciprocating vibration, and the sealing performance is good.
In one embodiment of the present invention, as shown in fig. 1 to 3, the housing assembly includes a main housing 1 and a side cover plate 2, the main housing 1 has a side wall opening structure, and the side cover plate 2 is sealed and fastened on the side wall opening through flange bolts.
Specifically, as shown in fig. 1 to 3, the main casing 1 is provided with an observation port 103 on one side wall opposite to the side cover 2, and a transparent tempered glass cover plate is flange-connected to the observation port 103.
The side cover plate 2 is detachably connected to the side wall opening of the main shell 1, so that the side cover plate 2 is convenient to open and then overhaul and maintain the inside, and the service life of the equipment is prolonged. Through the provision of the observation port 103, the condition in the cavity of the equipment is convenient to observe in operation, and fault judgment is carried out.
When the vibration screening device for coal ash conveying works, materials falling from the feed inlet 101 fall above the screen plate 3, and the vibration is transmitted to the screen plate 3 through the vibration adapter 9 and the vibration transmission rod 8 by the vibration screening device. The sieve plate 3 performs vibration screening on the fallen materials, the powder and the small-particle materials fall along the sieve strip sieve seam, and slag and granules with larger particles slide down along the sieve strip sieve seam to the extrusion part of the static extrusion head 5. The air cylinder 7 adopts a clearance type action mode, the air cylinder 7 acts, the piston rod pushes the movable extrusion head 6 to impact and press downwards towards the static extrusion head 5, and slag and granules are extruded and crushed. The cylinder 7 retreats, drives the extrusion head 6 to reset, and crushed materials fall under the screen under vibration and are discharged from the discharge hole 102.
According to the vibrating screen for conveying the coal ash, through the arrangement of the screen plate 3 and the vibrating mechanism, the screen plate 3 receives the materials falling from the feed inlet 101 for vibrating screening, and the large materials on the screen are extruded and crushed by the extruding mechanism on the top surface of the screen plate 3, so that the blocking influence of the large materials on pipeline conveying is reduced. Through the setting of vibrator and biography subassembly of shaking, set up the vibrator in the casing assembly outside, can reduce the influence of dust material to the vibrator, improve the life of equipment. The vibration screening device for coal ash conveying can crush and screen coal ash slag in a pneumatic conveying system, so that the conveying is smoother, and the conveying efficiency is improved. In addition, the sieve plate 3 is selected by the plurality of sieve plate screws 4 at two sides, the sieve plate 3 is arranged in the inner cavity of the shell assembly in a floating mode, and vibration of the sieve plate 3 can be isolated relative to the fact that the sieve plate 3 is directly fastened to the inner side wall of the shell assembly, and vibration is prevented from being transmitted to a conveying pipeline; the vibration can be further isolated and the vibration noise can be reduced by the rubber thread sleeve between the inner end of the sieve plate screw 4 and the sieve plate 3. By arranging the static extrusion head 5 at the bottom end of the screen plate 3, the static extrusion head 5 can bear and accumulate slag, granules and the like at a low position, so that the dynamic extrusion head 6 can conveniently carry out centralized extrusion and crushing; the linear driving unit specifically adopts the air cylinder 7, so that the impact crushing capability is better, and particularly, the impact crushing device can be used for hammering and punching to crush slag and aggregates better in the final stage of the travel. The screen plate 3 adopts a bar screen, so that materials can slide downwards conveniently, undersize products fall down, and oversize products are accumulated to the extrusion part of the static extrusion head 5; the static extrusion head 5 and the dynamic extrusion head 6 adopt meshed tooth shapes, so that slag and granules can be held in the extrusion process, and are prevented from sliding out and being extruded from the side edges. The static extrusion head 5 and the screen plate 3 are separated, so that the static extrusion head 5 does not participate in vibration of the screen plate 3 and only participates in extrusion, the influence on the vibration amplitude of the vibrating screen plate 3 is reduced, meanwhile, the outward transmission of vibration is avoided, and the running stability of equipment is improved. The vibration adapter 9 is arranged at the outer end of the vibration transmission rod 8, so that the vibrator can be conveniently arranged, and the vibration transmission rod is suitable for the installation of various types of vibrators; through the arrangement of the via hole combination, the via hole position of the vibration transmission rod 8 can be supported and sealed; the vibration transmission rod 8 is supported by the rubber backing plate 11 through the via hole combination, vibration transmission to the shell can be reduced, the circular holes of the rubber backing plate 11 are symmetrically arranged on two sides to be clamped with the annular grooves, double sealing can be formed at the position of reciprocating vibration, and the sealing performance is good. The side cover plate 2 is detachably connected to the side wall opening of the main shell 1, so that the side cover plate 2 is convenient to open and then overhaul and maintain the inside, and the service life of the equipment is prolonged. Through the provision of the observation port 103, the condition in the cavity of the equipment is convenient to observe in operation, and fault judgment is carried out.
The invention also discloses a working method of the vibration screening device for conveying the coal ash, which is characterized in that the vibration screening device for conveying the coal ash in any specific embodiment is used for crushing and screening the coal ash in a pneumatic conveying pipeline, and large-particle sundries are crushed and screened by adopting an auxiliary crushing mode on a screen plate.
Through the auxiliary crushing mode on the screen, massive sundries such as slag, granules and the like entering the conveying pipeline can be automatically processed in time, the pipeline blockage faults caused by long-term accumulation of the massive sundries are avoided, the maintenance frequency is reduced, and the labor is saved.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (6)
1. The utility model provides a coal ash carries and uses vibration screening ware, its characterized in that includes casing assembly, sieve (3), extrusion mechanism and vibration mechanism, the top of casing assembly is provided with feed inlet (101) and the below of material input is provided with discharge gate (102) of material output, sieve (3) slope sets up feed inlet (101) with between discharge gate (102), extrusion mechanism sets up on the top surface of sieve (3) and can extrude broken to sieve big piece material, vibration mechanism includes vibrator and vibration transmission subassembly, vibration transmission subassembly inner fixed connection is in sieve (3) below, vibration transmission subassembly outer end is connected the vibrator, the vibrator is located the casing assembly outside;
the sieve plate (3) is installed in the shell assembly through sieve plate screws (4), a plurality of installation holes are formed in two long side edges of the sieve plate (3), and the sieve plate screws (4) penetrate through holes in the side wall of the shell assembly and then are connected to the installation holes; the inner end head of the sieve plate screw (4) is mounted in the mounting hole through a flexible rubber thread sleeve;
The vibration transmission assembly comprises a vibration transmission rod (8), a vibration adapter (9) and a via hole combination, wherein the inner end flange of the vibration transmission rod (8) is connected to the bottom surface of the sieve plate (3), the via hole combination is arranged on a through hole of the shell assembly and is supported in the middle of the vibration transmission rod (8) in a sealing manner, the outer end of the vibration transmission rod (8) is connected with the vibration adapter (9), and the vibration adapter (9) is connected with the vibrator;
The through hole combination comprises a clamping plate (10), a rubber backing plate (11) and a clamping bolt (12), wherein the clamping plate (10) and the rubber backing plate (11) are respectively and symmetrically stacked on two sides of a through hole of the shell assembly and locked through the through clamping bolt (12), and a round hole is formed in the middle of the rubber backing plate (11) on the inner side and clamped in an annular groove in the middle of the vibration transmission rod (8).
2. The vibratory screen for ash transport of claim 1, wherein: the extrusion mechanism comprises a static extrusion head (5), a dynamic extrusion head (6) and a linear driving unit, wherein the static extrusion head (5) is arranged at the bottom end of the sieve plate (3), the dynamic extrusion head (6) is arranged at the high end of the sieve plate (3) and is opposite to the static extrusion head (5), the linear driving unit is arranged on the outer wall of the shell assembly, and the working end of the linear driving unit is sealed and inserted into the inner cavity of the shell assembly and is connected to the rear of the dynamic extrusion head (6).
3. The vibratory screen for ash transport of claim 2, wherein: the screen plate (3) is a bar screen, the direction of a screen bar is along the moving direction of the movable extrusion head (6), the extrusion part of the movable extrusion head (6) is in a continuous tooth shape, the appearance of the extrusion part of the static extrusion head (5) is meshed with the movable extrusion head (6), and the tooth shape of the two sides of the static extrusion head (5) is smaller than the middle tooth shape.
4. The vibratory screen for ash transport of claim 2, wherein: the static extrusion head (5) is in clearance with the sieve plate (3), the static extrusion head (5) is installed on the side wall of the shell assembly through a pressure head bolt (13) at the back, and the pressure head bolt (13) passes through a pressure head installation through hole of the shell assembly to be connected with a threaded hole (501) at the back of the static extrusion head (5).
5. The vibratory screening machine for coal ash transportation according to any one of claims 1 to 4, wherein: the shell assembly comprises a main shell (1) and a side cover plate (2), wherein the main shell (1) is of a side wall opening structure, and the side cover plate (2) is buckled on the side wall opening in a sealing mode through flange bolts.
6. A method for operating a vibrating screen for conveying coal ash, characterized in that the vibrating screen for conveying coal ash according to any one of claims 1 to 5 is used for crushing and screening fly ash in a pneumatic conveying pipeline, and large-particle sundries are crushed and screened by adopting an auxiliary crushing mode on a screen plate.
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| CN202211425684.0A CN115532351B (en) | 2022-11-15 | 2022-11-15 | Vibration screening device for coal ash conveying and working method thereof |
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| CN205463151U (en) * | 2016-03-01 | 2016-08-17 | 伊吾广汇矿业有限公司 | Reinforced (rfd) rod of fixed beam vibration sieve |
| CN107398323A (en) * | 2017-08-31 | 2017-11-28 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of pneumatic breaking sifter |
| CN216936158U (en) * | 2021-09-10 | 2022-07-12 | 华亭煤业集团有限责任公司 | Crushing device with screening structure for coal mining |
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| DE3520061A1 (en) * | 1985-06-04 | 1986-12-04 | O & K Orenstein & Koppel Ag, 1000 Berlin | Device for comminuting easily crushable materials |
| JPH0725975U (en) * | 1993-06-21 | 1995-05-16 | 神鋼電機株式会社 | Vibrating screener |
| CN202752223U (en) * | 2012-07-02 | 2013-02-27 | 广西靖西县一洲锰业有限公司 | Efficient feeding sieve |
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| CN115532351A (en) | 2022-12-30 |
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