CN115520682B - Raw material screening system for concrete production - Google Patents

Raw material screening system for concrete production Download PDF

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Publication number
CN115520682B
CN115520682B CN202211152768.1A CN202211152768A CN115520682B CN 115520682 B CN115520682 B CN 115520682B CN 202211152768 A CN202211152768 A CN 202211152768A CN 115520682 B CN115520682 B CN 115520682B
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China
Prior art keywords
rod
material bin
rotating
aggregate
outer side
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CN202211152768.1A
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Chinese (zh)
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CN115520682A (en
Inventor
王玉峰
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Guangzhou Yingzhu Concrete Co ltd
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Guangzhou Yingzhu Concrete Co ltd
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Priority to CN202211152768.1A priority Critical patent/CN115520682B/en
Publication of CN115520682A publication Critical patent/CN115520682A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
    • B65G69/14—Pulverising loaded or unloaded materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying
    • B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
    • B65D88/68—Large containers characterised by means facilitating filling or emptying preventing bridge formation using rotating devices
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Artificial Fish Reefs (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

The application discloses raw materials screening system for concrete production, it includes: a material bin which is arranged on the frame and provided with a discharge hole at the bottom; the screening mechanism is arranged at the bottom of the material bin and used for screening aggregate falling from the discharge port; the rotating rods are arranged between the inner walls of the material bin in parallel, and the end parts of the rotating rods are exposed out of the material bin; a rotary drum sleeved on the outer side of the rotary rod; the power mechanism is arranged at the outer side of the material bin and used for driving the rotating rod to rotate; and the guiding device is arranged in the material bin and positioned at the bottom of the rotary drum and used for guiding aggregate. This application can make the more even entering material storehouse of aggregate when using to can reduce the condition that the material storehouse appears blockking up, in order to guarantee screening plant's normal operating.

Description

Raw material screening system for concrete production
Technical Field
The invention relates to the field of concrete screening equipment, in particular to a raw material screening system for concrete production.
Background
The concrete is an indispensable material in the building industry, and is mainly formed by mixing various aggregates such as sand, stones, fine sand and the like with cement in a certain proportion, and in the concrete processing process, aggregates with different diameters are usually screened by utilizing screening equipment so as to screen out the aggregates meeting actual requirements.
At present, traditional screening equipment mainly includes the material storehouse to and set up the screening mechanism in the material storehouse bottom, when screening equipment during operation, generally input the material storehouse with the aggregate through conveyor, the aggregate can get into screening mechanism from the bottom discharge gate of material storehouse and screen, the aggregate of screening again through the conveyer belt carry to predetermined place can.
Aiming at the current situation, the inventor considers that when aggregate enters a material bin, the aggregate is easy to accumulate in the material bin, especially the aggregate is exposed outdoors in most cases, and the aggregate is easy to coagulate and form blocks, so that the material bin is easy to block, and the normal operation of screening equipment is influenced.
Disclosure of Invention
An object of the application is to provide a raw materials screening system for concrete production, can make the more even entering material storehouse of aggregate to can reduce the condition that the material storehouse appears blockking up, in order to guarantee screening plant's normal operating.
The application provides a raw materials screening system for concrete production adopts following technical scheme:
a raw material screening system for concrete production, comprising: a material bin which is arranged on the frame and provided with a discharge hole at the bottom; the screening mechanism is arranged at the bottom of the material bin and used for screening aggregate falling from the discharge port; the rotating rods are arranged between the inner walls of the material bin in parallel, and the end parts of the rotating rods are exposed out of the material bin; a rotary drum sleeved on the outer side of the rotary rod; the power mechanism is arranged at the outer side of the material bin and used for driving the rotating rod to rotate; and the guiding device is arranged in the material bin and positioned at the bottom of the rotary drum and used for guiding aggregate.
Through adopting above-mentioned technical scheme, at the in-process that the aggregate drops into the material storehouse, the rotary drum of setting can rotate under power unit's drive, and two rotary drums mutually support, both can extrude the massive aggregate and make it crowded garrulous, in can also making the more even entering material storehouse of aggregate simultaneously, and the material guiding device of setting can lead the aggregate on the basis of rotary drum for aggregate dispersion's more even is favorable to reducing the condition of aggregate jam material storehouse to appear, thereby can guarantee screening plant's normal operating.
The application further provides that the power mechanism comprises: a gear installed at the outer end of the rotating rod; an internal tooth belt sleeved between the gears; and the servo motor is arranged on the outer side of the material bin, and the output shaft and one end, far away from the gear, of the rotating rod are fixed.
Through adopting above-mentioned technical scheme, when needs drive rotary drum rotates, can open servo motor, servo motor can drive the bull stick and rotate at the in-process of opening to drive the rotary drum and rotate, whole structure easy operation, labour saving and time saving
The automatic feeding device is further characterized in that two symmetrical sides of the material bin are respectively provided with a bar-shaped sliding port for sliding at the end part of the rotating rod far away from the servo motor, the outer side of the material bin is provided with a tensioning assembly for adjusting the tightness of the internal tooth belt, and the outer side of the material bin is also provided with an adjusting assembly for limiting the end part of the rotating rod in the bar-shaped sliding port so as to adjust the distance between the two rotating rods.
Through adopting above-mentioned technical scheme, when needing to adjust the distance between two bull sticks, can go on through adjusting part, adjusting part's setting can increase the application scope of rotary drum to the actual needs of adaptation, and the tensioning assembly of setting can adjust the elasticity of internal tooth belt, in order to guarantee adjusting part at the regulation in-process, internal tooth belt is in the state of tensioning all the time.
The application further provides that the tensioning assembly comprises: the end part of the pressing rod is rotatably arranged at the outer side of the material bin through a rotating shaft; the pressing wheel is arranged at the end part of the pressing rod and used for pressing the internal tooth belt; and a torsion spring arranged between the rotating shaft and the pressing rod and used for driving the pressing wheel to press against the internal tooth belt.
Through adopting above-mentioned technical scheme, at the in-process of tensioning internal tooth belt, the torsional spring of setting can utilize self elastic force drive to support the depression bar rotatory for support the pinch roller of depression bar drive tip and support all the time to press on the internal tooth belt, in order to realize the mesh of tensioning internal tooth belt, this structural design is ingenious, and the effect is obvious.
The application further provides that the adjusting assembly comprises: the moving block is connected to the outer side of the material bin in a sliding manner along the extending direction of the strip-shaped sliding port; the annular block is movably sleeved at the end part of the rotating rod and is fixed with the moving block through the connecting frame; the threaded rod is threaded on the moving block along the extending direction of the moving block; and the servo motor is arranged on the outer side of the material bin and used for driving the threaded rod to rotate so as to drive the moving block to slide.
Through adopting above-mentioned technical scheme, when opening servo motor, can drive the movable block and slide at the outer wall in material storehouse, the movable block is when sliding, alright drive annular piece drive bull stick and remove in the bar sliding port to can be very convenient adjust the distance between two bull sticks.
The application further provides that the guiding device comprises: the cross rod is arranged between the inner walls of the material bin and is parallel to the rotating rod; a T-bar mounted on the cross bar; the rotating plates are hinged on the T-shaped rod symmetrically; and the driving component is arranged on the cross rod and the T-shaped rod and used for driving the two rotating plates to rotate.
Through adopting above-mentioned technical scheme, the commentaries on classics board of setting can further lead the aggregate of rotary drum dispersion for the aggregate carries out the landing along predetermined direction, and the drive assembly of setting, can drive the commentaries on classics board and rotate, in order to increase the application scope of commentaries on classics board, makes the aggregate can be more even dispersion in the material storehouse.
The application further provides that the drive assembly comprises: the sliding sleeve is arranged on the sliding cylinder of the T-shaped rod; a connecting rod with one end hinged on the sliding cylinder and the other end hinged on the rotating plate; the spring is sleeved on the T-shaped rod, and the end parts of the spring are respectively abutted with the top of the T-shaped rod and the sliding cylinder; and a driving piece which is arranged on the cross rod and used for driving the sliding barrel to slide.
Through adopting above-mentioned technical scheme, when needs drive revolving plate rotates, can open the drive piece drive slide cylinder and slide on T shape pole, slide cylinder can drive revolving plate through the connecting rod and rotate on T shape pole at the slip in-process to this contained angle between two revolving plates is adjusted, and this structure easy operation, whole process degree of automation is high, labour saving and time saving.
The automatic feeding device is further characterized in that guide plates parallel to the rotating plates are hinged to two sides of the inner wall of the material bin, a supporting cylinder is installed on the inner wall of the material bin in an inclined and rotating mode, a supporting rod with the outer end portion connected with the guide plates in a rotating mode is sleeved in the supporting cylinder in a sliding mode, and a buffer spring used for connecting the inner wall of the supporting cylinder and the inner end of the supporting rod is arranged between the inner wall of the supporting cylinder and the inner end of the supporting rod.
Through adopting above-mentioned technical scheme, when the aggregate landing arrives on the baffle, the bracing piece that sets up can slide in a support section of thick bamboo under buffer spring's effect to drive the baffle and swing in predetermined scope, thereby can further improve the guide effect of baffle to the aggregate, make the aggregate more disperse, reduce the condition that the material storehouse appears blocking.
The rotary drum is further provided with a plurality of annular toothed plates in a surrounding mode, wherein the cross section of the rotary drum is in a regular polygon shape.
Through adopting above-mentioned technical scheme, polygonal rotary drum can be better lead and reposition of redundant personnel to the aggregate, in being favorable to the even whereabouts of aggregate to the material storehouse, and a plurality of annular pinion racks of setting can break the aggregate that condenses the piece at rotatory in-process, further reduces the condition that the aggregate blocks up the material storehouse and appear.
The material bin is characterized in that a swinging assembly used for swinging and guiding the raw materials is further arranged between the inner walls of the discharge holes of the material bin.
Through adopting above-mentioned technical scheme, the swing subassembly of setting can swing and direction the aggregate of discharge gate position in aggregate whereabouts in-process for the aggregate further disperses falls into screening mechanism, both can reduce the condition that the aggregate blockked up the material storehouse, simultaneously, still is favorable to the aggregate to sieve.
In summary, the present application includes at least one of the following beneficial technical effects:
through setting up two rotary drums and driving the rotary drum and carry out rotatory power unit, power unit when opening, can drive two rotary drums and rotate, both can carry out the centre gripping to massive aggregate and break up, simultaneously, can also carry out the dispersion operation to the aggregate that gets into in the material storehouse, and the regulation subassembly of setting can adjust the distance between two rotary drums according to actual need to can increase the application scope of this application;
through setting up the commentaries on classics board, the commentaries on classics board can carry out the regulation of angle under drive assembly's drive for aggregate is even disperses, and the baffle of setting can mutually support with the commentaries on classics board, leads the aggregate that gets into in the material storehouse, further disperses the aggregate, reduces the condition that the aggregate appears blockking up.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a schematic structural view of an adjustment assembly in an embodiment of the present application;
fig. 3 is a schematic structural view of a swing assembly according to an embodiment of the present application.
Reference numerals illustrate: 1. a frame; 2. a material bin; 20. a discharge port; 21. a strip-shaped sliding port; 3. a rotating rod; 30. an annular toothed plate; 31. a rotating drum; 32. a gear; 33. an internal toothed belt; 34. a servo motor; 35. a pressing rod; 36. a pinch roller; 37. a moving block; 38. an annular block; 39. a threaded rod; 4. a cross bar; 41. a T-bar; 42. a rotating plate; 43. a slide cylinder; 44. a connecting rod; 45. a spring; 5. a guide plate; 51. a support cylinder; 52. a support rod; 6. a swinging rod; 61. a swinging plate; 62. a drive gear; 63. a toothed plate; 64. and (3) a cylinder.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The embodiment of the application discloses raw materials screening system for concrete production, as shown in fig. 1 and fig. 2, include: the material bin 2 is installed on the frame 1, the top opening of the material bin 2 is approximately square, a rectangular discharging hole 20 is formed in the bottom of the material bin 2, and a screening mechanism (not shown in the figure) is installed on the frame 1 at the bottom of the material bin 2 and generally adopts a rotary screen.
When the aggregate is required to be screened, the aggregate can be conveyed into the material bin 2 through the conveying device, then the aggregate can fall into the screening mechanism from the discharge hole 20, the screening mechanism screens the aggregate, and the screened aggregate is conveyed to a preset position through the conveying belt.
Considering that in practice, aggregate is when throwing into material storehouse 2, the condition of piling up appears very easily to cause material storehouse 2 to block up easily, for this, in this embodiment, rotate in the position that material storehouse 2 inner wall is close to the top and install two bull sticks 3 that are parallel to each other, the both ends of bull stick 3 all expose material storehouse 2 outside, the rotary drum 31 is equipped with to the outside cover on bull stick 3, simultaneously, still be provided with power unit in the outside of material storehouse 2, power unit is used for driving bull stick 3 and rotates in order to drive rotary drum 31 and rotate.
When the aggregate is put into the in-process of material storehouse 2, can open power unit and drive rotary drum 31 and rotate, rotary drum 31 can carry out the dispersed operation to the aggregate at rotatory in-process, simultaneously, two rotary drums 31 can also extrude broken to the aggregate that condenses into the large-scale for aggregate is more even to scatter into material storehouse 2, thereby can reduce the condition that material storehouse 2 appears blockking up.
In this embodiment, the power mechanism includes: the gear 32 arranged at the outer end part of the rotating rod 3 is sleeved with an internal tooth belt 33 between the two gears 32, a servo motor 34 is arranged at the outer side of the material bin 2, an output shaft of the servo motor 34 is fixed with one end, far away from the gear 32, of one rotating rod 3, and when the servo motor 34 is started, the two rotating rods 3 can be driven to rotate through the internal tooth belt 33, so that the two rotating cylinders 31 can be conveniently driven to rotate.
In order to enlarge the application range of the rotary drum 31, the two symmetrical sides of the material bin 2 are provided with the strip-shaped sliding openings 21, the strip-shaped sliding openings 21 can be used for sliding the end parts of the rotary rods 3 far away from the servo motor 34, wherein an adjusting component is arranged on the outer side of the material bin 2, the adjusting component can adjust the distance between the two rotary rods 3, and after the rotary rods 3 slide to a preset position, the rotary rods 3 can be locked.
In this embodiment, the adjusting assembly includes: the movable block 37 which is slidably connected to the outer side of the material bin 2 along the extending direction of the strip-shaped sliding port 21 is movably sleeved with the annular block 38 at the outer end part of the rotary rod 3, the annular block 38 is connected with the movable block 37 through an I-shaped connecting frame, the movable block 37 is further threaded with the threaded rod 39, the threaded rod 39 is conveniently driven to rotate, the outer side of the material bin 2 is further provided with a servo motor, and the output shaft of the servo motor is fixed with the end part of the threaded rod 39.
In addition, considering that the length of the internal toothed belt 33 cannot be adjusted when adjusting the distance between the two rotating rods 3, in this embodiment, a tensioning assembly is further provided outside the material bin 2, and the tensioning assembly can tension the tightness of the internal toothed belt 33 to adapt to the adjustment of the distance between the rotating rods 3.
The tensioning assembly comprises a pressing rod 35, wherein the end part of the pressing rod 35 is rotatably arranged on the outer side of the material bin 2 through a rotating shaft, a pressing wheel 36 is arranged at the outer end part of the pressing rod 35, meanwhile, a torsion spring is further arranged between the end part of the pressing rod 35 and the rotating shaft, and the torsion spring can enable the pressing wheel 36 to be always abutted on the inner toothed belt 33 by utilizing the elastic force of the torsion spring.
When the distance between the two rotating rods 3 needs to be adjusted, the servo motor can be started to drive the threaded rod 39 to rotate, the threaded rod 39 can drive the moving block 37 to move when rotating, the moving block 37 can drive the rotating rod 3 to slide in the strip-shaped sliding opening 21 through the annular block 38 when moving, so that the distance between the two rotating rods 3 can be adjusted, and meanwhile, the torsion spring can drive the pinch roller 36 at the end part of the pressing rod 35 to always abut against the inner toothed belt 33, so that the adjustment of the distance between the rotating rods 3 can be adapted.
As shown in fig. 2 and 3, in order to guide the aggregate falling in the bin 2 so that the aggregate is more dispersed, a guide device is further provided in the bin 2, and the guide device is located at a lower position of the drum 31, and in this embodiment, the guide device includes: the horizontal rod 4 installed between the inner wall of the material bin 2, the horizontal rod 4 and the rotating rod 3 are in the positions parallel to each other, the T-shaped rod 41 is vertically installed on the horizontal rod 4, the symmetrical rotating plate 42 is hinged to the top of the T-shaped rod 41, the driving assembly is arranged on the horizontal rod 4 and the T-shaped rod 41 and used for driving the rotating plate 42 to turn over, and the direction of aggregate guiding is changed in real time according to actual conditions.
In this embodiment, the driving assembly includes: the sliding sleeve is arranged on the sliding cylinder 43 on the T-shaped rod 41, a symmetrical connecting rod 44 is hinged to the outer side of the sliding cylinder 43, one end of the connecting rod 44, far away from the sliding cylinder 43, is hinged to the rotating plate 42, a driving piece for driving the sliding cylinder 43 to slide along the vertical direction is arranged on the cross rod 4, in addition, in order to increase the guiding effect of the rotating plate 42, the rotating plate 42 plays a role in buffering protection, a spring 45 is further sleeved on the T-shaped rod 41, one end of the spring 45 is abutted to the top of the T-shaped rod 41, and the other end of the spring 45 is abutted to the sliding cylinder 43.
When the driving piece is started, the sliding cylinder 43 can be driven to slide on the T-shaped rod 41, and in the sliding process, the sliding cylinder 43 can drive the rotating plate 42 to rotate through the hinged connecting rod 44, so that the rotating plate 42 swings in a preset range, and therefore aggregates falling onto the rotating plate 42 can be guided in a swinging manner, and the aggregates are scattered in the material bin 2 more uniformly.
In addition, the two sides of the inner wall of the material bin 2 are also hinged with guide plates 5 which are parallel to the rotating plates 42, the positions of the two side inner walls of the material bin 2 and below the guide plates 5 are hinged with support cylinders 51, in a normal state, the support cylinders 51 are obliquely arranged, support rods 52 are inserted in the support cylinders 51 in a sliding manner, one ends of the support rods 52, far away from the support cylinders 51, are hinged at the bottom of the guide plates 5, and buffer springs for connecting the two are further arranged between the inner walls of the support cylinders 51 and the inner ends of the support rods 52.
When the aggregate falls onto the rotating plate 42, the aggregate can slide onto the guide plate 5 along the rotating plate 42, at this time, under the action of the buffer spring, the support rod 52 can play a role in buffering and supporting the guide plate 5, so that the aggregate can slide onto the discharge hole 20 along the guide plate 5, and the aggregate can be effectively guided through the mutual matching of the rotating plate 42 and the guide plate 5, so that the aggregate can be uniformly scattered, and the condition of blocking the material bin 2 is reduced.
In order to make the aggregate dispersion more uniform, the cross section of the drum 31 is set to be regular polygon, which is quadrangular in this embodiment, in addition, a plurality of annular toothed plates 30 are circumferentially arranged on the outer side of the drum 31, when the aggregate coagulated into blocks is encountered, the annular toothed plates 30 can squeeze and crush the block-shaped aggregate, which is beneficial to uniform dispersion of the aggregate.
As shown in fig. 3, in this embodiment, in order to increase the guiding effect on the aggregate, a swing assembly is further disposed between the inner walls of the discharge hole 20 of the material bin 2, where the swing assembly includes: two swinging rods 6 installed between the inner walls of the discharge holes 20 are rotated, the end parts of the swinging rods 6 are exposed out of the material bin 2, swinging plates 61 are fixed on the swinging rods 6, the swinging plates 61 are located at positions between the discharge holes 20, driving gears 62 are installed at the outer end parts of the swinging rods 6, toothed plates 63 are horizontally and slidably installed on the outer sides of the material bin 2, the toothed plates 63 are meshed with the driving gears 62, air cylinders 64 are installed on the outer sides of the material bin 2, and piston rods of the air cylinders 64 are fixed with the toothed plates 63.
When opening cylinder 64, can drive pinion rack 63 horizontal slip, pinion rack 63 horizontal migration alright drive swinging arms 6 and rotate for swinging arms 6 drive swinging arms 61 and swing between discharge gate 20, at the in-process of swinging arms 61 wobbling, just can pat and the direction to the aggregate, make the aggregate evenly scatter to screening mechanism in, be favorable to the screening of aggregate.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (6)

1. A raw material screening system for concrete production, comprising: a material bin (2) which is arranged on the frame (1) and provided with a discharge hole (20) at the bottom;
the screening mechanism is arranged at the bottom of the material bin (2) and is used for screening aggregate falling out of the discharge port (20);
the rotating rods (3) are arranged between the inner walls of the material bin (2) in parallel, and the end parts of the rotating rods are exposed out of the material bin (2);
a rotary drum (31) sleeved outside the rotary rod (3);
the power mechanism is arranged at the outer side of the material bin (2) and used for driving the rotating rod (3) to rotate;
the guide device is arranged in the material bin (2) and positioned at the bottom of the rotary drum (31) for guiding aggregate;
the power mechanism includes: a gear (32) arranged at the outer end part of the rotating rod (3); an internal tooth belt (33) sleeved between the gears (32); the servo motor (34) is arranged at the outer side of the material bin (2) and is fixed at one end, far away from the gear (32), of the output shaft and the rotating rod (3);
the two symmetrical sides of the material bin (2) are provided with strip-shaped sliding openings (21) for sliding the end parts of the rotating rods (3) far away from the servo motor (34), the outer side of the material bin (2) is provided with tensioning assemblies for adjusting the tightness of the internal tooth belts (33), and the outer side of the material bin (2) is also provided with adjusting assemblies for limiting the end parts of the rotating rods (3) in the strip-shaped sliding openings (21) so as to adjust the distance between the two rotating rods (3);
the tensioning assembly includes: the end part of the pressing rod (35) is rotatably arranged at the outer side of the material bin (2) through a rotating shaft; a pinch roller (36) mounted at the end of the pressing rod (35) for pressing against the internal tooth belt (33); and a torsion spring arranged between the rotating shaft and the pressing rod (35) and used for driving the pressing wheel (36) to press against the internal tooth belt (33);
the guide device includes: the cross rod (4) is arranged between the inner walls of the material bin (2) and is parallel to the rotating rod (3); a T-bar (41) mounted on the cross bar (4); a rotating plate (42) hinged on the T-shaped rod (41) and symmetrical; and a driving component which is arranged on the cross rod (4) and the T-shaped rod (41) and is used for driving the two rotating plates (42) to rotate.
2. A raw material screening system for concrete production according to claim 1, wherein said adjusting assembly comprises: the moving block (37) is connected to the outer side of the material bin (2) in a sliding manner along the extending direction of the strip-shaped sliding opening (21); an annular block (38) movably sleeved at the end part of the rotating rod (3) and fixed with the moving block (37) through a connecting frame; a threaded rod (39) threaded on the moving block (37) along the extending direction of the moving block (37); and a servo motor which is arranged outside the material bin (2) and used for driving the threaded rod (39) to rotate so as to drive the moving block (37) to slide.
3. A raw material screening system for concrete production according to claim 1, wherein said drive assembly comprises: the sliding sleeve is arranged on the sliding cylinder (43) on the T-shaped rod (41); a connecting rod (44) with one end hinged on the sliding cylinder (43) and the other end hinged on the rotating plate (42); a spring (45) sleeved on the T-shaped rod (41) and the end parts of the spring are respectively abutted with the top of the T-shaped rod (41) and the sliding cylinder (43); and a driving member mounted on the cross bar (4) for driving the slide cylinder (43) to slide.
4. The raw material screening system for concrete production according to claim 1, wherein guide plates (5) parallel to the rotating plates (42) are hinged to two sides of the inner wall of the material bin (2), a supporting cylinder (51) is obliquely and rotatably arranged on the inner wall of the material bin (2), a supporting rod (52) with the outer end part rotatably connected with the guide plates (5) is slidably sleeved in the supporting cylinder (51), and a buffer spring for connecting the inner wall of the supporting cylinder (51) and the inner end of the supporting rod (52) is arranged between the inner wall of the supporting cylinder and the inner end of the supporting rod.
5. Raw material screening system for concrete production according to claim 1, characterized in that the drum (31) is arranged with a regular polygon cross section and that a plurality of annular toothed plates (30) are arranged around the outside of the drum (31).
6. Raw material screening system for concrete production according to claim 1, characterized in that a swinging assembly for swinging and guiding raw materials is further arranged between the inner walls of the discharge opening (20) of the material bin (2).
CN202211152768.1A 2022-09-21 2022-09-21 Raw material screening system for concrete production Active CN115520682B (en)

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CN112757679A (en) * 2021-01-25 2021-05-07 武汉工程大学 Garbage disposal device
CN113387229B (en) * 2021-07-01 2021-12-28 兴化市顺杰高温合金制品有限公司 Winding device for continuous fine drawing of resistance wire
CN215611857U (en) * 2021-08-31 2022-01-25 郑州大帝科技有限公司 Beer brewing raw material crushing device
CN216605402U (en) * 2021-10-27 2022-05-27 陈道雨 Grinder is used in processing of balloon pigment

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