CN116174295A - Concrete aggregate sieving mechanism - Google Patents
Concrete aggregate sieving mechanism Download PDFInfo
- Publication number
- CN116174295A CN116174295A CN202310461100.3A CN202310461100A CN116174295A CN 116174295 A CN116174295 A CN 116174295A CN 202310461100 A CN202310461100 A CN 202310461100A CN 116174295 A CN116174295 A CN 116174295A
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- Prior art keywords
- screen frame
- gear
- screening
- piece
- concrete
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- 238000007873 sieving Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 title claims description 4
- 238000012216 screening Methods 0.000 claims abstract description 121
- 230000010287 polarization Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 70
- 239000010959 steel Substances 0.000 claims description 70
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 3
- 239000012811 non-conductive material Substances 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000007790 scraping Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
- B07B1/34—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
- B07B1/343—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen with mechanical drive elements other than electromagnets
-
- 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
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- 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
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4636—Regulation of screen apertures
-
- 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
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/02—Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces
-
- 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
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed 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 relates to the technical field of building raw material screening, and discloses a concrete aggregate screening device which comprises a plurality of vertically stacked screening pieces, wherein a motor and a support frame are arranged on one screening piece, a gear II and a polarization block are arranged on an output shaft of the motor, a gear I meshed with the gear II is arranged on the output shaft of the motor, the gear ratio of the gear I to the gear II is 2:1, a sliding rod is arranged on the support frame, one end of the sliding rod abuts against the gear I, a push plate is arranged on one side of the gear I corresponding to the sliding rod, an elastic piece I for driving the sliding rod to move towards the gear I is arranged on the push rod, the screening piece comprises a limiting frame, a basic screen frame is arranged on the limiting frame, a transverse moving screen frame is arranged on the basic screen frame, and a sliding longitudinal moving screen frame is arranged on the transverse moving screen frame. According to the invention, the mortar adhered to the recycled concrete aggregate is removed in the process of sieving the recycled concrete aggregate, so that the bonding effect of the recycled concrete aggregate and the mortar in the newly stirred concrete is ensured, and the strength of the newly stirred concrete is ensured.
Description
Technical Field
The invention relates to the technical field of building raw material screening, in particular to a concrete aggregate screening device.
Background
When the concrete aggregate is produced, wood, glass and other impurities in waste concrete are removed through manual or mechanical equipment, the concrete is crushed for a plurality of times through crushing equipment, crushed materials are screened to obtain concrete recycled aggregate and crushed mortar, then the concrete recycled aggregate and the crushed mortar are screened to obtain concrete recycled aggregate, mortar is adhered to the surface of the concrete recycled aggregate in actual production, and if the adhered mortar is not removed, the bonding effect of the concrete recycled aggregate and the mortar in the newly stirred concrete is affected, so that the strength of the new concrete is affected.
In order to solve the problems, the concrete aggregate screening device in the prior art comprises a rotary charging barrel, the concrete recycled aggregate is placed into the rotary charging barrel during use, the charging barrel rotates to enable the concrete recycled aggregate to rotate and the concrete recycled aggregate to roll back and forth to collide, mortar on the surface of the concrete recycled aggregate falls off due to the collision, but cracks are easy to occur in the concrete recycled aggregate due to the fact that the concrete recycled aggregate continuously collides, and the quality of the concrete recycled aggregate is affected.
Disclosure of Invention
The invention aims to overcome the existing defects, and provides the concrete aggregate screening device, mortar adhered to the recycled concrete aggregate is removed in the process of screening the recycled concrete aggregate, so that the bonding effect of the recycled concrete aggregate and the mortar in the newly stirred concrete is ensured, the strength of the new concrete is ensured, the collision energy of the recycled concrete aggregate is small, cracks are not easy to generate in the recycled concrete aggregate, the quality of the recycled concrete aggregate is ensured, and the problems in the background art can be effectively solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a concrete aggregate sieving mechanism, includes the vertical screening piece that stacks of a plurality of, installs motor and support frame on one of them screening piece, install gear two and polarizing block on the output shaft of motor, install on the motor output shaft with gear two engaged gear one, gear one and gear two's gear ratio is 2:1, be equipped with gliding slide bar on the support frame, slide bar one end supports on gear one, gear one corresponds slide bar one side and is equipped with the push pedal, install the elastic component one that drives the slide bar to gear one on the push rod.
The screening piece comprises a limiting frame, a basic screen frame is arranged on the limiting frame, a transverse screen frame is arranged on the basic screen frame, a sliding longitudinal screen frame is arranged on the transverse screen frame, a plurality of transverse steel wires are arranged on the longitudinal screen frame at equal intervals in the horizontal direction, a plurality of longitudinal steel wires are arranged on the transverse screen frame at equal intervals in the horizontal direction, and staggered steel wires are arranged on the basic screen frame in the horizontal direction.
One end of the sliding rod, which is far away from the first gear, is fixedly provided with a push rod, and the push rod is connected with the longitudinal shifting screen frame.
Wherein the first gear rotates and the push plate pushes the slide bar away from the first gear, the screen member is in a downward movement during the vibration cycle.
As a preferable technical scheme of the invention, one end of the transverse steel wire penetrates through and extends out of the longitudinal moving screen frame, and an elastic pulling piece is arranged at one end of the transverse steel wire extending out of the longitudinal moving screen frame.
As a preferable technical scheme of the invention, the elastic pulling piece comprises a pipe body (253), a built-in block (252) is arranged in the pipe body (253), and one side of the built-in block (252) and one end of the transverse steel wire extending out of the longitudinal screen frame are connected through a second elastic piece (251).
As a preferable technical scheme of the invention, the built-in block (252) is provided with a male screw thread, and the inner wall of the pipe body (253) is provided with a female screw thread matched with the male screw thread.
As a preferable technical scheme of the invention, a sliding insertion tube (254) is arranged in the tube body (253), an elastic piece III (255) for driving the insertion tube (254) to move towards the built-in block (252) is arranged in the tube body (253), and a clamping groove matched with the insertion tube (254) is arranged on the built-in block (252).
As a preferable technical scheme of the invention, the screening piece further comprises a U-shaped clamp, the longitudinally moving screen frame, the transversely moving screen frame and the basic screen frame are clamped in clamping grooves of the U-shaped clamp, and bolts are arranged on the U-shaped clamp.
As a preferable technical scheme of the invention, one end of the longitudinal steel wire penetrates through and extends out of the transverse moving screen frame, and an elastic pulling piece is arranged at one end of the longitudinal steel wire extending out of the transverse moving screen frame.
As a preferable technical scheme of the invention, the limit frame is fixedly provided with the guide inclined plate which is obliquely arranged, and the guide inclined plate is positioned below the basic screen frame.
As a preferable technical scheme of the invention, the invention further comprises a power supply and an oscilloscope, wherein the longitudinal moving screen frame and the basic screen frame are made of conductive materials, the transverse moving screen frame is made of non-conductive materials, and the longitudinal moving screen frame, the power supply, the oscilloscope and the basic screen frame form an open circuit at the positions of the longitudinal moving screen frame and the basic screen frame.
As a preferable technical scheme of the invention, the bottom side of the lowermost screening piece is provided with a plurality of supporting legs, and the supporting legs are shock absorbers, elastic blocks, springs or supporting rods.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the concrete aggregate screening device, the elastic pulling piece can be pulled in the longitudinally moving screen frame, on one hand, in the process that the screening piece moves downwards in the vibration period, the transverse steel wire is used for hooping the concrete recycled aggregate in the screening hole, the transverse steel wire is used for scraping mortar on the surface of the concrete recycled aggregate, and the bonding effect of the concrete recycled aggregate and the mortar after re-batching is improved; on the other hand, the length of the blocked concrete recycled aggregate, which is used for expanding the transverse steel wires and the length of the transverse steel wires in the longitudinally moving screen frame, is increased, so that the concrete recycled aggregate blocked in the screen holes of the screening piece is separated, and the screening efficiency of the screening piece is ensured; on the other hand, when the concrete recycled aggregate is piled on the screening piece in the screening process, the piled concrete recycled aggregate is pressed downwards to enable the transverse steel wires on the longitudinally-moving screen frame to be downwards bent to be in contact with the steel wires on the foundation screen frame, and when voltage fluctuation on the oscilloscope is monitored, namely, the pile of the concrete recycled aggregate on the screening piece is generated, the feeding of the concrete recycled aggregate is reduced, and the screening effect of the concrete recycled aggregate is guaranteed.
2. According to the concrete aggregate screening device, the rotating polarization block is used as a power source for hooping the recycled concrete aggregate by the transverse steel wire on the longitudinal moving screen frame, so that the hooping of the recycled concrete aggregate and the upward movement of the recycled concrete aggregate are synchronous.
3. According to the concrete aggregate screening device, on one hand, the position of the longitudinally moving screen frame is adjusted along the horizontal and vertical directions of the transverse steel wires, the size of the screening holes of the screening piece is adjusted, and the adjustment of the size of the screening holes is realized; on the other hand, the transverse steel wire continuously hoops the recycled concrete aggregate, so that the mortar adhered on the recycled concrete aggregate is scraped.
4. According to the concrete aggregate screening device, the screening piece is positioned in the downward moving mode in the vibration period, the transverse steel wires are used for hooping the concrete recycled aggregates in the screening holes, the hooped concrete recycled aggregates have upward speed, speed difference exists between the hooped concrete recycled aggregates and the downward moving transverse steel wires, mortar on the surface of the concrete recycled aggregates is scraped by the transverse steel wires, and the bonding effect of the concrete recycled aggregates and the mortar after re-batching is improved.
5. According to the concrete aggregate screening device, the elastic pulling piece is adjusted according to the condition that the recycled concrete aggregate is clamped in the screening hole of the screening piece, when the recycled concrete aggregate is easy to clamp in the screening hole, the position of the built-in block in the pipe body is adjusted, the tensile force of the elastic piece II is reduced, and the clamped recycled concrete aggregate is easy to separate from the screening hole.
6. According to the concrete aggregate screening device, on one hand, the position of the transverse moving screen frame is adjusted along the horizontal and vertical directions of the longitudinal steel wires, the position of the longitudinal moving screen frame is adjusted along the horizontal and vertical directions of the transverse steel wires, the size of the screening holes of the screening piece is adjusted, and the applicability of the screening piece is improved.
Drawings
FIG. 1 is a schematic view of a view angle structure according to the present invention;
FIG. 2 is a schematic view of another view angle structure of the present invention;
FIG. 3 is a schematic view of another view angle structure of the present invention;
FIG. 4 is an enlarged schematic view of the structure A of FIG. 3 according to the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 3B according to the present invention;
FIG. 6 is a schematic view of an exploded view of one embodiment of a screen member of the present invention;
FIG. 7 is a schematic top view of a screen member of the present invention;
FIG. 8 is an enlarged schematic view of the structure at C of FIG. 7;
FIG. 9 is a schematic view of an elastic pulling member according to the present invention;
FIG. 10 is a schematic view of another embodiment of a screen member of the present invention;
fig. 11 is a schematic view of another embodiment of a screen member according to the present invention.
In the figure: the device comprises a push rod 1, a screening piece 2, a transverse steel wire 21, a longitudinal moving screen frame 22, a longitudinal steel wire 23, a transverse moving screen frame 24, an elastic pulling piece 25, an elastic piece 251 II, a built-in block 252, a 253 pipe body 254 insertion pipe, an elastic piece 255 III, a basic screen frame 26, a guide inclined plate 27, a limit frame 28, a 29U-shaped clamp, a 3 supporting leg, a 4 motor, a 5-gear I, a 6-gear II, a 7 sliding rod, an 8-polarization block, an elastic piece 9I, a 10 supporting frame 11 power supply and a 12 oscilloscope.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Embodiment one:
referring to fig. 1-8, the embodiment discloses a concrete aggregate screening device, which comprises a plurality of screening pieces 2 stacked in the vertical direction, wherein two adjacent screening pieces 2 are connected through bolts or through bayonet locks, a motor 4 and a supporting frame 10 are installed on one screening piece 2, a gear two 6 and a polarizing block 8 are installed on an output shaft of the motor 4, and the motor 4 drives the polarizing block 8 to rotate the polarizing block 8 so as to enable the screening piece 2 to vibrate up and down.
The output shaft of the motor 4 is provided with a first gear 5 meshed with a second gear 6, the gear ratio of the first gear 5 to the second gear 6 is 2:1, the support frame 10 is provided with a sliding hole, a sliding rod 7 slides in the sliding hole, one end of the sliding rod 7 abuts against the first gear 5, and a push plate is arranged on one side of the first gear 5 corresponding to the sliding rod 7.
The push rod 1 is provided with an elastic piece I9 which drives the sliding rod 7 to move towards the gear I5, the elastic piece I9 is a spring, an elastic strip or an elastic air bag, two ends of the elastic piece I9 are respectively connected with the push rod 1 and the support frame 10 or two ends of the elastic piece I9 are respectively connected with the push rod 1 and the screening piece 2, the gear I5 drives the push plate to rotate, the push plate is continuously contacted with the sliding rod 7 and separated from the sliding rod 7, and the movement range of the push plate for pushing the sliding rod 7 is 0.5 cm to 2.0cm.
The screening piece 2 comprises a limiting frame 28, a basic screen frame 26 is fixed on the limiting frame 28 through bolts or buckles, a sliding transverse screen frame 24 is arranged on the basic screen frame 26, the transverse screen frame 24 is fixed on the basic screen frame 26 through bolts or buckles, a sliding longitudinal screen frame 22 is arranged on the transverse screen frame 24, a plurality of transverse steel wires 21 are arranged on the longitudinal screen frame 22 at equal intervals in the horizontal direction, a plurality of longitudinal steel wires 23 are arranged on the transverse screen frame 24 at equal intervals in the horizontal direction, the transverse steel wires 21 and the longitudinal steel wires 23 are vertically arranged on the horizontal projection, a plurality of steel wires which are vertically staggered are arranged on the horizontal direction of the basic screen frame 26, the vertical direction distance between the preferable transverse steel wires 21 and the longitudinal steel wires 23 is 0-3.0cm, and the vertical direction distance between the preferable longitudinal steel wires 23 and the steel wires on the basic screen frame 26 is 0-3.0cm.
Further, the spacing between two adjacent transverse wires 21, the spacing between two adjacent longitudinal wires 23, and the spacing between two adjacent parallel wires of the basic screen frame 26 are all equal.
One end of the sliding rod 7 far away from the gear one 5 is fixedly provided with a push rod 1, and the push rod 1 is connected with the longitudinal moving screen frame 22 through bolts or telescopic rods with fixable telescopic lengths.
In which the first gear wheel 5 rotates and the push plate pushes the slide bar 7 away from the first gear wheel 5, the screening element 2 is in a downward movement during the vibration cycle.
The working process and principle of the embodiment are as follows:
the transverse wires 21, the longitudinal wires 23 and the wires on the basic screen frame 26 constitute a screen mesh in a horizontal projection of the screen member 2 as shown in fig. 7.
The position of the transverse moving screen frame 24 is adjusted along the horizontal and vertical directions of the longitudinal steel wires 23, the position of the longitudinal moving screen frame 22 is adjusted along the horizontal and vertical directions of the transverse steel wires 21, the size of the screen holes of the screening pieces 2 is adjusted, and the screen holes on the vertically stacked screening pieces 2 are sequentially smaller from top to bottom.
The motor 4 drives the polarizing block 8 to rotate, the polarizing block 8 enables the screening piece 2 to vibrate up and down, the recycled concrete aggregates are conveyed through external conveying equipment and fall on the uppermost screening piece 2, the recycled concrete aggregates are screened through the screening pieces 2 with different screen sizes, the motor 4 drives the gear I5 to rotate through the gear II 6, the gear I5 drives the push plate to rotate and the push plate is close to the sliding rod 7, then the push plate pushes the sliding rod 7 to move away from the gear I5, the screening piece 2 moves downwards in a vibration period, the sliding rod 7 drives the longitudinally moving screen frame 22 to move along the horizontal vertical direction of the transverse steel wires 21 through the push rod 1, so that the transverse steel wires 21 are used for banding the recycled concrete aggregates in the screening holes, and a speed difference exists between the banded recycled concrete aggregates and the downward moving transverse steel wires 21, so that mortar on the surface of the recycled concrete aggregates is scraped by the transverse steel wires 21.
In two adjacent vibration cycles of the screening member 2, the concrete recycled aggregate is only hooped in the downward vibration stroke of one vibration cycle, so that the screening of the concrete recycled aggregate and the scraping of mortar on the surface of the concrete recycled aggregate are ensured.
Preferably, the underside of the lowermost screening element 2 is provided with a plurality of supporting legs 3, the supporting legs 3 are damping cylinders, dampers, elastic blocks, springs or supporting rods, the supporting legs 3 enable the screening element 2 not to be in direct contact with the ground or a supporting surface, and noise caused by vibration of the screening element 2 is reduced.
Preferably, the included angle between the rotation plane of the polarization block 8 and the screening surface of the screening piece 2 is an acute angle, so that the concrete recycled aggregate on the screening surface of the screening piece 2 can move to one side of the screening piece 2; alternatively, the screening surface of the screening member 2 is not parallel to the horizontal plane as shown in fig. 2, so that the recycled aggregate of the concrete on the screening surface of the screening member 2 can move to the side of the screening member 2.
Further, in the embodiment, the grain size of the recycled concrete aggregate is 5-20 mm, 20-40 mm, 40-80 mm and 80-150 mm.
Embodiment two:
as shown in fig. 6, this embodiment discloses a concrete aggregate screening device, which has a structure substantially the same as that of the first embodiment, except that one end of the transverse wire 21 of this embodiment penetrates and extends out of the longitudinally moving screen frame 22, and an elastic pulling member 25 is mounted at one end of the transverse wire 21 extending out of the longitudinally moving screen frame 22, and the elastic pulling member 25 is an elastic block, an elastic air bag or a spring.
The working process and principle of the embodiment are as follows:
during the screening process: the concrete recycled aggregate is clamped in the sieve holes of the sieving piece 2, the sieving piece 2 is changed from upward vibration to downward vibration, the transverse steel wire 21 does not hoop the concrete recycled aggregate, a speed difference exists between the downward vibration sieving piece 2 and the concrete recycled aggregate, and the clamped concrete recycled aggregate is used for expanding the length of the transverse steel wire 21 and the length of the transverse steel wire 21 in the longitudinally moving sieve frame 22 to be larger, so that the concrete recycled aggregate clamped in the sieve holes of the sieving piece 2 is separated.
In the process of scraping the mortar on the surface of the recycled aggregate of the concrete: the sliding rod 7 drives the longitudinally moving screen frame 22 to move along the horizontal and vertical directions of the transverse steel wires 21 through the push rod 1, the size of the screening holes is reduced by the transverse steel wires 21, the transverse steel wires 21 hoop concrete aggregates in the screening holes, and the elastic pulling piece 25 enables the transverse steel wires 21 to be pulled in the longitudinally moving screen frame 22, so that the hooping effect of different transverse steel wires 21 on the concrete recycled aggregates is further ensured.
Preferably, a replacement sleeve or a wear block is arranged at the end part of the sliding rod 7 close to the first gear 5, so that the sliding rod 7 is prevented from being worn by the replacement sleeve or the wear block, and compared with the sliding rod 7, the replacement sleeve or the wear block is low in cost, and the replacement cost of the sliding rod 7 is reduced.
Embodiment III:
as shown in fig. 9, this embodiment discloses a concrete aggregate screening device, which has a structure substantially the same as that of the second embodiment, except that the elastic pulling member 25 of this embodiment includes a pipe body 253, a built-in block 252 is provided in the pipe body 253, one side of the built-in block 252 and one end of the transverse steel wire 21 extending to the outside of the longitudinally moving screen frame 22 are connected by an elastic member two 251, and the elastic member two 251 is a spring or an elastic rubber strip.
Preferably, the internal block 252 is mounted to the inner wall of the tube 253 by bolts or snaps.
The working process and principle of the embodiment are as follows:
the position of the built-in block 252 in the pipe body 253 is adjusted to adjust the elongated length of the elastic member II 251, so that the tension force applied to the transverse steel wire 21 is adjusted, the elastic pulling member 25 is adjusted according to the condition that the concrete recycled aggregate is clamped in the screening holes of the screening member 2, when the concrete recycled aggregate is easy to clamp in the screening holes, the position of the built-in block 252 in the pipe body 253 is adjusted, the tension force of the elastic member II 251 is reduced, and the clamped concrete recycled aggregate is easy to separate from the screening holes.
Embodiment four:
as shown in fig. 9, this embodiment discloses a concrete aggregate screening device, which has a structure substantially the same as that of the third embodiment, except that the inner block 252 of this embodiment is provided with an outer male screw thread, and the inner wall of the pipe 253 is provided with an inner female screw thread adapted to the outer male screw thread; because the built-in block 252 is limited to rotate by the transverse steel wire 21, the pipe body 253 is rotated to change the position of the built-in block 252 in the pipe body 253, so that the tension force of the elastic pulling piece 25 on the transverse steel wire 21 is adjusted, when the recycled concrete aggregate is easy to clamp in the screening hole, the position of the built-in block 252 in the pipe body 253 is adjusted, the tension force of the elastic piece II 251 is reduced, and the clamped recycled concrete aggregate is easy to separate from the screening hole.
Fifth embodiment:
as shown in fig. 9, this embodiment discloses a concrete aggregate screening device, the structure of which is substantially the same as that of the fourth embodiment, and the difference is that a sliding insertion tube 254 is provided in the tube 253 of this embodiment, an elastic member three 255 for driving the insertion tube 254 to move toward the internal block 252 is provided in the tube 253, a plurality of clamping grooves adapted to the insertion tube 254 are provided on the internal block 252, one end of the insertion tube 254 far from the internal block 252 extends out of the tube 253, and the elastic member three 255 is a spring or an elastic rope.
The working process and principle of the embodiment are as follows:
the insertion tube 254 is pulled outwards to separate the insertion tube 254 from the clamping groove, the tube 253 is rotated to enable the position of the built-in block 252 in the tube 253 to be changed, so that the tension force of the elastic pulling piece 25 on the transverse steel wire 21 is changed, after the insertion tube 254 is released, the insertion tube 254 is clamped in the clamping groove again under the action of the elastic piece III 255, and the insertion tube 254 and the built-in block 252 are prevented from rotating relatively due to vibration of the screening piece 2, and the tension force borne by the transverse steel wire 21 is maintained.
Example six:
as shown in fig. 10, this embodiment discloses a concrete aggregate screening device, in which the connection between the push rod 1 and the longitudinally moving screen frame 22 is removed or the push plate is removed from the gear one 5 on the basis of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment or the fifth embodiment.
The screening member 2 further comprises a U-shaped clamp 29, the longitudinally moving screen frame 22, the transversely moving screen frame 24 and the foundation screen frame 26 are clamped in clamping grooves of the U-shaped clamp 29, threaded holes are formed in the U-shaped clamp 29 in the vertical direction, bolts are installed in the threaded holes, the bolts are rotated to enable the bolts to be propped against the longitudinally moving screen frame 22, and the longitudinally moving screen frame 22, the transversely moving screen frame 24 and the foundation screen frame 26 are fixed together.
The working process and principle of the embodiment are as follows:
the push rod 1 and the longitudinally moving screen frame 22 are removed or the push plate is removed from the gear I5, the positions of the longitudinally moving screen frame 22 and the transversely moving screen frame 24 on the horizontal plane are adjusted so as to adjust the sizes of screening holes of the screening piece 2, then the longitudinally moving screen frame 22, the transversely moving screen frame 24 and the foundation screen frame 26 are clamped in clamping grooves of the U-shaped clamp 29, the U-shaped clamp 29 is fixed by rotating bolts, and the longitudinally moving screen frame 22, the transversely moving screen frame 24 and the foundation screen frame 26 of the screening piece 2 are fixed together, so that the screening of the concrete recycled aggregate is realized and the concrete recycled aggregate is prevented from being clamped in the sieve holes.
Embodiment seven:
as shown in fig. 6, this embodiment discloses a concrete aggregate screening device, the structure of which is substantially the same as that of the sixth embodiment, and the difference is that one end of the longitudinal steel wire 23 of this embodiment penetrates and extends out of the transverse moving screen frame 24, an elastic pulling member 25 is mounted at one end of the longitudinal steel wire 23 extending out of the transverse moving screen frame 24, and the elastic pulling member 25 enables the concrete recycled aggregate to be clamped at the longitudinal steel wire 23 on the transverse moving screen frame 24, when the screening member 2 is changed from upward vibration to downward vibration, the longitudinal steel wire 23 is separated from the concrete recycled aggregate clamped at the longitudinal steel wire 23 by being stretched, thereby ensuring screening efficiency of the screening member 2.
Example eight:
as shown in fig. 6, this embodiment discloses a concrete aggregate screening device having a structure substantially the same as that of the first embodiment, except that a guide inclined plate 27 is fixed to a limit frame 28 of this embodiment, and the guide inclined plate 27 is located below a base screen frame 26.
The working process and principle of the embodiment are as follows:
the guiding sloping plate 27 enables the undersize recycled concrete aggregates to return to the starting end of sieving of the next layer of sieving piece 2 again, so that the sieving length of the recycled concrete aggregates passing through the sieving piece 2 is ensured, and the sieving efficiency of the recycled concrete aggregates is ensured.
Example nine:
as shown in fig. 11, this embodiment discloses a concrete aggregate screening device, on the basis of any one of the first to eighth embodiments, this embodiment further includes a power supply 11 and an oscilloscope 12, the longitudinally moving screen frame 22 and the base screen frame 26 are made of conductive materials such as iron, copper, alloy, conductive rubber, etc., the laterally moving screen frame 24 is made of nonconductive materials such as plastic, wood, rubber, etc., the longitudinally moving screen frame 22, the power supply 11, the oscilloscope 12, the base screen frame 26 form an open circuit at the longitudinally moving screen frame 22 and the base screen frame 26, and the oscilloscope 12 monitors the voltage in the circuit.
The power source 11 is a dry cell or a secondary cell.
Preferably, a resistor or electric equipment is arranged on a circuit consisting of the longitudinally moving screen frame 22, the power supply 11, the oscilloscope 12 and the basic screen frame 26, and the resistor in the circuit is increased to avoid burning out the oscilloscope 12.
The motor 4, the power supply 11, the oscilloscope 12 and the like used in the present invention are all common electronic components in the prior art, and the working mode and the circuit structure thereof are all known techniques and are not described herein.
The working process and principle of the embodiment are as follows:
when the concrete recycled aggregate on the screening piece 2 is piled up in the screening process, the piled up concrete recycled aggregate is pressed down to enable the transverse steel wires 21 on the longitudinally moving screen frame 22 to be in contact with the steel wires on the basic screen frame 26, namely, the longitudinally moving screen frame 22, the transverse steel wires 21, the power supply 11, the oscillograph 12, the basic screen frame 26 and the steel wires on the basic screen frame 26 form a closed circuit, a worker judges the pile up of the concrete recycled aggregate on the screening piece 2 by observing the change of the voltage waveform on the oscillograph 12, and when the voltage fluctuation on the oscillograph 12 is monitored, namely, the pile up of the concrete recycled aggregate on the screening piece 2 is reduced, the feeding of the concrete recycled aggregate is reduced, and the screening effect of the concrete recycled aggregate is ensured.
Further, the oscilloscope 12 is replaced with a voltmeter, and the accumulation of the concrete recycled aggregate on the screening member 2 is monitored by monitoring the occurrence of voltage fluctuation.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A concrete aggregate sieving mechanism, its characterized in that: the novel screening device comprises a plurality of vertically stacked screening pieces (2), wherein a motor (4) and a supporting frame (10) are arranged on one screening piece (2), a gear II (6) and a polarization block (8) are arranged on an output shaft of the motor (4), a gear I (5) meshed with the gear II (6) is arranged on the output shaft of the motor (4), the gear ratio of the gear I (5) to the gear II (6) is 2:1, a sliding rod (7) is arranged on the supporting frame (10), one end of the sliding rod (7) abuts against the gear I (5), a pushing plate is arranged on one side of the gear I (5) corresponding to the sliding rod (7), and an elastic piece I (9) for driving the sliding rod (7) to move towards the gear I (5) is arranged on the pushing rod (1);
the screening piece (2) comprises a limiting frame (28), a basic screen frame (26) is arranged on the limiting frame (28), a transverse screen frame (24) is arranged on the basic screen frame (26), a sliding longitudinal screen frame (22) is arranged on the transverse screen frame (24), a plurality of transverse steel wires (21) are arranged at equal intervals in the horizontal direction of the longitudinal screen frame (22), a plurality of longitudinal steel wires (23) are arranged at equal intervals in the horizontal direction of the transverse screen frame (24), and staggered steel wires are arranged in the horizontal direction of the basic screen frame (26);
one end of the sliding rod (7) far away from the gear I (5) is fixedly provided with a push rod (1), and the push rod (1) is connected with a longitudinal movement screen frame (22);
wherein the screening element (2) is in a downward movement during the vibration cycle when the gear one (5) is rotating and the push plate pushes the slide bar (7) away from the gear one (5).
2. The concrete aggregate screening device according to claim 1, wherein: one end of the transverse steel wire (21) penetrates through and extends out of the longitudinal moving screen frame (22), and an elastic pulling piece (25) is arranged at one end of the transverse steel wire (21) extending out of the longitudinal moving screen frame (22).
3. The concrete aggregate screening device according to claim 2, wherein: the elastic pulling piece (25) comprises a pipe body (253), a built-in block (252) is arranged in the pipe body (253), and one side of the built-in block (252) and one end of the transverse steel wire (21) extending out of the longitudinal moving screen frame (22) are connected through an elastic piece II (251).
4. A concrete aggregate screening device according to claim 3, wherein: the inner block (252) is provided with an outer convex thread, and the inner wall of the pipe body (253) is provided with an inner concave thread matched with the outer convex thread.
5. The concrete aggregate screening device according to claim 4, wherein: the sliding insertion tube (254) is arranged in the tube body (253), the elastic piece III (255) for driving the insertion tube (254) to move towards the built-in block (252) is arranged in the tube body (253), and a clamping groove matched with the insertion tube (254) is formed in the built-in block (252).
6. A concrete aggregate screening device according to any one of claims 2 to 5, wherein: the screening piece (2) further comprises a U-shaped clamp (29), the longitudinal shifting screen frame (22), the transverse shifting screen frame (24) and the basic screen frame (26) are clamped in clamping grooves of the U-shaped clamp (29), and bolts are installed on the U-shaped clamp (29).
7. The concrete aggregate screening device according to claim 6, wherein: one end of the longitudinal steel wire (23) penetrates through and extends out of the transverse moving screen frame (24), and an elastic pulling piece (25) is arranged at one end of the longitudinal steel wire (23) extending out of the transverse moving screen frame (24).
8. The concrete aggregate screening device according to claim 1, wherein: the limiting frame (28) is fixedly provided with a guide inclined plate (27) which is obliquely arranged, and the guide inclined plate (27) is positioned below the basic screen frame (26).
9. The concrete aggregate screening device according to claim 1, wherein: the vertical movement screen frame (22) and the basic screen frame (26) are made of conductive materials, the transverse movement screen frame (24) is made of non-conductive materials, and the vertical movement screen frame (22), the power supply (11), the oscilloscope (12) and the basic screen frame (26) form an open circuit at the positions of the vertical movement screen frame (22) and the basic screen frame (26).
10. The concrete aggregate screening device according to claim 1, wherein: the bottom side of the lowest screening piece (2) is provided with a plurality of supporting legs (3), and the supporting legs (3) are shock absorbers, elastic blocks, springs or supporting rods.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310461100.3A CN116174295B (en) | 2023-04-26 | 2023-04-26 | Concrete aggregate sieving mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310461100.3A CN116174295B (en) | 2023-04-26 | 2023-04-26 | Concrete aggregate sieving mechanism |
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| CN116174295B CN116174295B (en) | 2023-12-29 |
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|---|---|
| CN116174295B (en) | 2023-12-29 |
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