CN114870935B - UHPC ultra-high performance concrete raw material sieving mechanism - Google Patents
UHPC ultra-high performance concrete raw material sieving mechanism Download PDFInfo
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- CN114870935B CN114870935B CN202210594297.3A CN202210594297A CN114870935B CN 114870935 B CN114870935 B CN 114870935B CN 202210594297 A CN202210594297 A CN 202210594297A CN 114870935 B CN114870935 B CN 114870935B
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- screening cylinder
- raw materials
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- 239000002994 raw material Substances 0.000 title claims abstract description 80
- 230000007246 mechanism Effects 0.000 title claims abstract description 48
- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 48
- 238000007873 sieving Methods 0.000 title claims description 9
- 238000012216 screening Methods 0.000 claims abstract description 127
- 239000012535 impurity Substances 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 4
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 4
- 241001330002 Bambuseae Species 0.000 abstract description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 4
- 239000011425 bamboo Substances 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010959 steel 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
- B02C1/12—Mills with non-rotating spiked members
-
- 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
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
-
- 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
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
-
- 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
- B07B1/50—Cleaning
- B07B1/52—Cleaning with brushes or scrapers
- B07B1/522—Cleaning with brushes or scrapers with brushes
-
- 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 UHPC ultra-high performance concrete raw material screening device, which relates to the technical field of concrete, and comprises a pretreatment box, wherein a feed inlet is arranged at the upper part of the pretreatment box, and the UHPC ultra-high performance concrete raw material screening device further comprises: the swing crushing mechanism is arranged in the pretreatment box, and crushes hardened raw materials when the raw materials fall into the pretreatment box from the feed inlet; the falling box is arranged at the bottom of the pretreatment box and is communicated with the interior of the pretreatment box; the screening section of thick bamboo, screening section of thick bamboo's both ends are equipped with the pipe, and the outer lateral wall of two pipes all rotates the cover and is equipped with the holding ring. The invention can pretreat raw materials, crush hardened raw materials, and then screen the raw materials by using the screening cylinder rapidly and efficiently, in the process, smooth discharge of the raw materials can be ensured by dredging the discharge hole of the screening cylinder, the raw materials discharge speed is high, blockage is avoided, screened impurities can be cleaned efficiently and conveniently, and rapid and efficient screening of the device is ensured.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to a UHPC ultra-high performance concrete raw material screening device.
Background
Ultra high performance concrete, UHPC (Ultra-High Performance Concrete), also known as reactive powder concrete (RPC, reactive Powder Concrete), has been the most innovative cement-based engineering material in the past three decades, achieving a large span of engineering material properties. "ultra-high performance concrete" comprises two aspects, ultra-high', namely ultra-high durability and ultra-high mechanical properties;
the ultra-high performance concrete is called as an engineering material with the best durability, the mechanical property of the ultra-high performance concrete with proper reinforcement is close to that of a steel structure, and meanwhile, the ultra-high performance concrete has excellent wear resistance and antiknock performance. Therefore, the ultra-high performance concrete is particularly suitable for large-span bridges, antiknock structures (military engineering, bank vaults and the like) and thin-wall structures, and is used in high-abrasion and high-corrosion environments.
When the ultra-high performance concrete is prepared, the raw materials of the ultra-high performance concrete need to ensure extremely high purity, so that the prepared ultra-high performance concrete has excellent mechanical properties. Therefore, strict screening of raw materials is required in the preparation of ultra-high performance concrete.
Through retrieving, chinese patent number CN 216539437U discloses a UHPC ultra-high performance concrete raw materials sieving mechanism who prevents blocking up, including screening box, spiral loading attachment is installed to screening box's left end, spiral loading attachment's upper end is connected with screening box's upper left end's opening part, the screening box is arranged in ground through the supporting leg, sieve fixed connection is in the lower extreme of mounting panel, the equal fixedly connected with in left and right sides of mounting panel upper end is the connecting block of arc structure.
The raw material screening device in the prior art has the following defects in actual use: the raw materials can not only have impurities, but also have hardening conditions due to the factors of storage environment, the screening efficiency of the existing screening device on hardened raw materials is low, the raw materials are easy to block sieve holes during screening, and the discharging efficiency of the raw materials and the impurities after screening is low, so the UHPC ultra-high performance concrete raw material screening device is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a UHPC ultra-high performance concrete raw material screening device.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the UHPC ultra-high performance concrete raw material screening device comprises a pretreatment box, wherein a feed inlet is arranged on the upper part of the pretreatment box, and the UHPC ultra-high performance concrete raw material screening device further comprises:
the swing crushing mechanism is arranged in the pretreatment box, and crushes hardened raw materials when the raw materials fall into the pretreatment box from the feed inlet;
the falling box is arranged at the bottom of the pretreatment box and is communicated with the interior of the pretreatment box;
the screening cylinder is characterized in that round tubes are arranged at two ends of the screening cylinder, supporting rings are sleeved on the outer side walls of the two round tubes in a rotating mode, the supporting rings are fixed at the top of the first bracket, the screening cylinder is driven to rotate through a rotating motor, the round tubes at one end of the screening cylinder are sleeved on the outer side of the bottom end of the drop box in a rotating mode, raw materials enter the screening cylinder from the bottom of the drop box, the raw materials are screened when the screening cylinder rotates, and screened raw materials are discharged from a discharge hole formed in the screening cylinder;
the movable screen plate is provided with a slag removal groove, and is detachably arranged in the slag removal groove, and is also provided with a discharge hole;
the conveying mechanism is arranged at the lower side of the screening cylinder, and the screened raw materials are conveyed through the conveying mechanism;
the outer wall dredging mechanism is used for dredging the discharge hole from the outer side of the screening barrel;
the inner wall dredging mechanism is used for dredging the discharge hole from the inner side of the screening barrel.
Further, be equipped with the inside of pretreatment case two symmetrical swing crushing mechanism, swing crushing mechanism includes the swinging arms, the one end of swinging arms is rotated with the inside of pretreatment case through first rotation seat and is connected, a plurality of broken cones are installed to the upside that first rotation seat one end was kept away from to the swinging arms, the downside that first rotation seat one end was kept away from to the swinging arms is installed first swing arm through the second hinge of rotation seat, the second swing arm is installed in the other end hinge of first swing arm, the second swing arm is installed in swing motor's drive shaft, swing motor is located the below of first rotation seat, and is fixed with the inner wall installation of pretreatment case.
Further, the outer wall dredging mechanism comprises an outer wall dredging brush plate, the outer wall dredging brush plate is arranged on the outer side of the screening cylinder, the outer wall dredging brush plate is in friction contact with the outer wall of the screening cylinder, the outer wall dredging brush plate is installed with a lifter through an installation plate, and the lifter lifts the outer wall dredging brush plate to enable the outer wall dredging brush plate to be mutually contacted with or separated from the outer wall of the screening cylinder;
the inner wall dredging mechanism comprises an inner wall dredging brush plate, the inner wall dredging brush plate is arranged in the screening cylinder and in friction contact with the inner wall of the screening cylinder, the inner wall dredging brush plate is installed through a supporting rod and a movable seat, the movable seat is installed with a screw rod in a threaded mode and simultaneously is also in sliding installation with a sliding rod, one ends of the screw rod and the sliding rod, far away from a falling box, extend to the outer sides of the screening cylinder and the circular tube and are installed with a second support, and a dredging motor is installed on the second support and drives the screw rod.
Further, the outer wall dredging brush plate consists of a strip-shaped plate body and bristles, one side of the strip-shaped plate body, which is close to the screening cylinder, is an arc-shaped surface, the bristles are fixed on the arc-shaped surface of the strip-shaped plate body, and the bristles dredge the discharge holes from the outer side of the screening cylinder;
the inner wall dredging brush plate consists of an annular plate body and bristles, the bristles are fixed on the outer circumferential surface of the annular plate body, and the bristles dredge discharge holes from the inner side of the screening barrel.
Further, the rotating electrical machines are fixed in the upside of second support, the pipe outer wall cover that is close to second support one end of screening section of thick bamboo is equipped with and is fixed with the ring gear, the drive end of rotating electrical machines is installed the gear, gear and ring gear intermesh, and the rotating electrical machines carries out rotary drive to screening section of thick bamboo through the meshing transmission of gear and ring gear.
Further, a screw rod is rotatably installed on the second support, two sliding rods are fixedly arranged in addition, a limiting disc is installed at one end of the screw rod extending to the inside of the screening barrel together with one end of the sliding rods, and the limiting disc limits the movable seat.
Further, the crushing cone is of a pyramid-shaped structure, and a plurality of crushing cones are fixed on the swinging plate at equal intervals.
Further, the conveying mechanism comprises a conveying belt and conveying rollers, the conveying belt is arranged below the screening cylinder, the conveying belt is installed with the conveying rollers, the conveying rollers are driven by a conveying motor, and the conveying direction of the conveying belt is adjustable.
Compared with the prior art, the invention has the beneficial effects that:
1. before raw materials are screened, the hardened raw materials are crushed through the swing crushing mechanism arranged in the pretreatment box, so that the raw materials are conveniently and smoothly conveyed into the screening cylinder, the screening efficiency of the raw materials is improved, the raw materials can be screened when the screening cylinder rotates, the screened raw materials leave from the discharge hole and are conveyed through the conveying mechanism, and the screening efficiency is higher.
2. When the screening machine screens raw materials, the outer wall dredging mechanism and the inner wall dredging mechanism are utilized to dredge the discharge holes from the outer side and the inner side of the screening cylinder respectively, so that the screening efficiency of the raw materials is ensured, the raw materials are discharged more thoroughly, and the raw materials are prevented from being wasted.
3. According to the invention, the impurities separated from the raw material screening are temporarily stored in the screening cylinder, and the movable screen plate can be thoroughly cleaned after the screening is completed by taking down the movable screen plate, so that the device can be conveniently and rapidly put into use again, and the time consumption for stopping the device is reduced.
In summary, the invention can pretreat raw materials, crush hardened raw materials, and then screen the raw materials by using the screening cylinder rapidly and efficiently, and in the process, smooth discharge of the raw materials can be ensured by dredging the discharge hole of the screening cylinder, the raw materials can be discharged rapidly, blockage is avoided, and the screened impurities can be cleaned efficiently and conveniently, so that the device is ensured to screen rapidly and efficiently.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
FIG. 1 is a schematic diagram of the overall structure of a UHPC ultra-high performance concrete raw material screening device provided by the invention;
FIG. 2 is an internal cross-sectional view of a UHPC ultra-high performance concrete raw material screening device according to the present invention;
FIG. 3 is a schematic diagram of a swing crushing mechanism according to the present invention;
FIG. 4 is a schematic installation view of an inner wall dredging brush plate, a screw rod and a sliding rod;
FIG. 5 is a schematic diagram of the driving of the sieving cartridge by the rotating electric machine according to the present invention;
FIG. 6 is a schematic view of the installation of the outer wall dredging brush plate, the mounting plate and the lifter according to the invention;
FIG. 7 is a schematic view of the installation of the movable screen and bolts of the present invention;
fig. 8 is an enlarged view of the part a of fig. 2.
In the figure: the device comprises a pretreatment box 1, a falling box 2, a screening cylinder 3, a first bracket 4, a supporting ring 5, a feed inlet 6, a 7-swing crushing mechanism, a 71-swing plate, a 72-first-rotation seat, a 73-crushing cone, a 74-second-rotation seat, a 75-first-swing arm, a 76-second-swing arm, a 77-swing motor, an 8-activity screen plate, a 9-outer-wall dredging brush plate, a 10 mounting plate, an 11 lifter, a 12-rotation motor, a 13 gear, a 14-tooth ring, a 15-second bracket, a 16-dredging motor, a 17-screw rod, a 18-slide rod, a 19-movement seat, a 20-screw rod, a 21-inner-wall dredging brush plate, a 22-discharge hole, a 23-screw bolt and a 24-transmission mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention;
referring to fig. 1 to 8, a UHPC ultra-high performance concrete raw material screening device comprises a pretreatment tank 1, wherein a feed inlet 6 is arranged at the upper part of the pretreatment tank 1, and raw materials to be screened are firstly poured into the pretreatment tank 1 through the feed inlet 6 for pretreatment;
the screening device of the invention also comprises a swinging crushing mechanism 7, wherein the swinging crushing mechanism 7 is arranged in the pretreatment tank 1, and when raw materials fall into the pretreatment tank 1 from the feed inlet 6, the swinging crushing mechanism 7 crushes hardened raw materials;
as shown in fig. 2, two symmetrical oscillating crushing mechanisms 7 are arranged inside the pretreatment tank 1, the oscillating crushing mechanisms 7 comprise an oscillating plate 71, one end of the oscillating plate 71 is rotationally connected with the inside of the pretreatment tank 1 through a first rotating seat 72, a plurality of crushing cones 73 are arranged on the upper side of one end of the oscillating plate 71 far away from the first rotating seat 72, the crushing cones 73 are in a pyramid-shaped structure, and the crushing cones 73 are fixed on the oscillating plate 71 at equal intervals. The swing plate 71 is kept away from the downside of first rotation seat 72 one end and articulates through the second rotation seat 74 and install first swing arm 75, and the other end of first swing arm 75 articulates and installs second swing arm 76, and second swing arm 76 installs on swing motor 77's drive shaft, and swing motor 77 is located the below of first rotation seat 72, and is fixed with the inner wall installation of pretreatment tank 1.
When the swing motor 77 is driven, the second swing arm 76 and the first swing wall 75 are mutually matched, so that the swing plate 71 can be controlled to swing repeatedly relative to the pretreatment tank 1 through the first rotating seat 72, and when the raw materials fall down, the crushing cone 73 on the swing plate 71 is used for crushing the hardened raw materials;
the crushed raw materials continue to fall into the falling box 2, and the falling box 2 is arranged at the bottom of the pretreatment box 1 and is communicated with the inside of the pretreatment box 1; the bottom of the drop box 2 is inclined to one side of the screening cylinder 3, and raw materials enter the screening cylinder 3 through the drop box 2;
the two ends of the screening cylinder 3 are provided with circular pipes, the outer side walls of the two circular pipes are respectively provided with a supporting ring 5 in a rotating sleeve manner, the supporting rings 5 are fixed at the top of the first bracket 4, the screening cylinder 3 is driven to rotate by a rotating motor 12, the circular pipe at one end of the screening cylinder 3 is rotationally sleeved at the outer side of the bottom end of the drop box 2, raw materials enter the screening cylinder 3 from the bottom of the drop box 2, the screening cylinder 3 screens the raw materials when rotating, and the screened raw materials are discharged from a discharge hole 22 formed in the screening cylinder 3;
the screening cylinder 3 is provided with a slag removal groove, a movable screen plate 8 is detachably arranged in the slag removal groove through bolts 23, and the movable screen plate 8 is also provided with a discharge hole 22;
the screening cylinder 3 can screen impurities on the raw materials when rotating, the screened raw materials are discharged from the discharge hole 22, and the impurities are temporarily stored in the screening cylinder 3; the discharge holes 22 on the movable screen plate 8 are also used for screening raw materials when the screening cylinder 3 rotates; when the movable screen plate 8 is disassembled, impurities can be separated from the screening cylinder 3 from the deslagging groove;
after leaving the sieving cylinder 3 from the discharge hole 22, the raw materials are conveyed by a conveying mechanism 24, and the raw materials are arranged at the lower side of the sieving cylinder 3 from the conveying mechanism 24;
in addition, when the impurity is removed through the deslagging tank, the impurity is conveyed by the conveying mechanism 24 as well;
in the invention, the conveying mechanism 24 comprises a conveying belt arranged below the sieving cylinder 3, conveying rollers, the conveying belt is arranged with the conveying rollers, the conveying rollers are driven by a conveying motor, and the conveying direction of the conveying belt is adjustable.
When the raw materials are conveyed, the conveying belt can convey forwards, when the impurities are conveyed, the conveying belt can convey backwards, the raw material collecting box is arranged on the front side of the conveying belt, and the impurity collecting box is arranged on the rear side of the conveying belt, so that the raw materials and the impurities are respectively collected.
An outer wall dredging mechanism is arranged on the outer side of the screening cylinder 3, and the outer wall dredging mechanism dredges the discharge hole 22 from the outer side of the screening cylinder 3;
as shown in fig. 6, the outer wall dredging mechanism comprises an outer wall dredging brush plate 9, wherein the outer wall dredging brush plate 9 is arranged on the outer side of the screening cylinder 3, the outer wall dredging brush plate 9 is in friction contact with the outer wall of the screening cylinder 3, the outer wall dredging brush plate 9 is installed with a lifter 11 through an installation plate 10, and the lifter 11 lifts the outer wall dredging brush plate 9 to enable the outer wall dredging brush plate 9 to be mutually contacted with or separated from the outer wall of the screening cylinder 3;
the outer wall dredging brush plate 9 consists of a strip-shaped plate body and bristles, wherein one side of the strip-shaped plate body, which is close to the screening cylinder 3, is an arc-shaped surface, the bristles are fixed on the arc-shaped surface of the strip-shaped plate body, and the bristles dredge the discharge holes 22 from the outer side of the screening cylinder 3;
the lifter 11 adopts electric telescopic rod, and the lifter 11 not only can control the outer wall dredging brush plate 9 to be close to or far away from the outer wall of the screening cylinder 3, but also can adjust the extrusion force of the outer wall dredging brush plate 9 to the outer wall of the screening cylinder 3, and adjust the dredging effect of the brush hair to the discharge hole 22.
When the screening cylinder 3 rotates, the lifter 11 drives the outer wall dredging brush plate 9 mounted with the mounting plate 10 to gradually make frictional contact with the outer wall of the screening cylinder 3, and bristles of the outer wall dredging brush plate 9 are utilized to dredge the discharge hole 22 from the outer side, so that raw materials are prevented from blocking the discharge hole 22;
an inner wall dredging mechanism is arranged in the screening barrel 3, and the inner wall dredging mechanism dredges the discharge hole 22 from the inner side of the screening barrel 3.
As shown in fig. 4, the inner wall dredging mechanism comprises an inner wall dredging brush plate 21, the inner wall dredging brush plate 21 is arranged in the screening cylinder 3 and is in friction contact with the inner wall of the screening cylinder 3, the inner wall dredging brush plate 21 is installed with a movable seat 19 through a supporting rod 20, the movable seat 19 is in threaded installation with a screw rod 17 and is also in sliding installation with a sliding rod 18, one ends of the screw rod 17 and the sliding rod 18, far away from the falling box 2, extend to the outer sides of the screening cylinder 3 and the round tube and are installed with a second bracket 15, a dredging motor 16 is installed on the second bracket 15, and the dredging motor 16 drives the screw rod 17. The second bracket 15 is rotatably provided with a screw rod 17, two slide bars 18 are fixedly arranged in addition, one ends of the screw rod 17 and the slide bars 18 extending to the inside of the screening cylinder 3 are jointly provided with a limiting disc, and the limiting disc limits the movable seat 19.
The inner wall dredging brush plate 21 is composed of an annular plate body and bristles, the bristles are fixed on the outer circumferential surface of the annular plate body, and the bristles dredge the discharge holes 22 from the inner side of the sieving cylinder 3.
When the screening cylinder 3 rotates or stops, the dredging motor 16 can control the screw rod 17 to rotate, and the screw rod 17 is utilized to move the moving block 19, so that the inner wall dredging brush plate 21 is driven to move in the screening cylinder 3, and the discharging hole 22 is dredged from the inner side, so that the raw material is prevented from blocking the discharging hole 22.
As shown in fig. 5, in the invention, a rotary motor 12 is fixed on the upper side of a second bracket 15, a toothed ring 14 is sleeved and fixed on the outer wall of a circular tube of a screening cylinder 3 near one end of the second bracket 15, a gear 13 is arranged at the driving end of the rotary motor 12, the gear 13 is meshed with the toothed ring 14, and the rotary motor 12 drives the screening cylinder 3 in a rotary way through the meshing transmission of the gear 13 and the toothed ring 14.
Claims (5)
1. UHPC ultra-high performance concrete raw materials sieving mechanism, including pretreatment tank (1), pan feeding mouth (6) are installed on the upper portion of pretreatment tank (1), its characterized in that still includes:
the swing crushing mechanism (7), the swing crushing mechanism (7) is arranged in the pretreatment box (1), and when the raw materials fall into the pretreatment box (1) from the feed inlet (6), the swing crushing mechanism (7) crushes hardened raw materials;
the falling box (2) is arranged at the bottom of the pretreatment box (1) and is communicated with the inside of the pretreatment box (2);
the screening cylinder (3), both ends of screening cylinder (3) are equipped with the pipe, and the outer lateral wall of two pipes all rotates the cover and is equipped with holding ring (5), holding ring (5) are fixed at the top of first support (4), screening cylinder (3) are rotatory through rotating electrical machines (12) drive, the pipe of screening cylinder (3) one end rotates the cover and establishes in the outside of whereabouts case (2) bottom, and the raw materials enters into screening cylinder (3) from the bottom of whereabouts case (2), screens the raw materials when screening cylinder (3) rotate, and discharge hole (22) ejection of compact are seted up from screening cylinder (3) to the raw materials after the screening;
the movable screen plate (8), the screening cylinder (3) is provided with a slag removal groove, the movable screen plate (8) is detachably arranged in the slag removal groove, and a discharge hole (22) is also formed, and when the movable screen plate (8) is detached, impurities are separated from the screening cylinder (3) from the slag removal groove;
the conveying mechanism (24) is arranged at the lower side of the screening cylinder (3), and the screened raw materials are conveyed through the conveying mechanism (24);
the outer wall dredging mechanism is used for dredging the discharge hole (22) from the outer side of the screening cylinder (3);
the inner wall dredging mechanism is used for dredging the discharge hole (22) from the inner side of the screening cylinder (3);
the outer wall dredging mechanism comprises an outer wall dredging brush plate (9), the outer wall dredging brush plate (9) is arranged on the outer side of the screening barrel (3), the outer wall dredging brush plate (9) is in friction contact with the outer wall of the screening barrel (3), the outer wall dredging brush plate (9) is installed with a lifter (11) through a mounting plate (10), and the lifter (11) lifts the outer wall dredging brush plate (9) to enable the outer wall dredging brush plate to be mutually contacted with or separated from the outer wall of the screening barrel (3);
the inner wall dredging mechanism comprises an inner wall dredging brush plate (21), the inner wall dredging brush plate (21) is arranged in the screening cylinder (3) and is in friction contact with the inner wall of the screening cylinder (3), the inner wall dredging brush plate (21) is installed with a movable seat (19) through a supporting rod (20), the movable seat (19) is in threaded installation with a screw rod (17) and is simultaneously in sliding installation with a sliding rod (18), one ends of the screw rod (17) and the sliding rod (18), far away from a falling box (2), extend to the outer sides of the screening cylinder (3) and a circular tube and are installed with a second bracket (15), a dredging motor (16) is installed on the second bracket (15), and the dredging motor (16) drives the screw rod (17);
the rotary motor (12) is fixed on the upper side of the second bracket (15), a toothed ring (14) is sleeved and fixed on the outer wall of a circular tube, which is close to one end of the second bracket (15), of the screening cylinder (3), a gear (13) is arranged at the driving end of the rotary motor (12), the gear (13) is meshed with the toothed ring (14), and the rotary motor (12) drives the screening cylinder (3) in a rotating way through meshing transmission of the gear (13) and the toothed ring (14);
the second bracket (15) is rotatably provided with a screw rod (17), two slide bars (18) are fixedly arranged in addition, one ends of the screw rod (17) and the slide bars (18) extending to the inside of the screening barrel (3) are jointly provided with a limiting disc, and the limiting disc limits the movable seat (19).
2. UHPC ultra-high performance concrete raw material screening device according to claim 1, characterized in that two symmetrical swing crushing mechanisms (7) are arranged in the pretreatment box (1), each swing crushing mechanism (7) comprises a swing plate (71), one end of each swing plate (71) is rotatably connected with the inside of the pretreatment box (1) through a first rotating seat (72), a plurality of crushing cones (73) are arranged on the upper side of one end, far away from the first rotating seat (72), of each swing plate (71), a first swing arm (75) is hinged to the lower side of one end, far away from the first rotating seat (72), of each swing plate through a second rotating seat (74), a second swing arm (76) is hinged to the other end of each first swing arm (75), each second swing arm (76) is arranged on a driving shaft of each swing motor (77), and each swing motor (77) is located below the corresponding first rotating seat (72) and fixedly arranged on the inner wall of the pretreatment box (1).
3. The UHPC ultra-high performance concrete raw material screening device according to claim 1, wherein the outer wall dredging brush plate (9) consists of a strip-shaped plate body and bristles, one side of the strip-shaped plate body, which is close to the screening cylinder (3), is an arc-shaped surface, the bristles are fixed on the arc-shaped surface of the strip-shaped plate body, and the bristles dredge the discharge holes (22) from the outer side of the screening cylinder (3);
the inner wall dredging brush plate (21) consists of an annular plate body and bristles, the bristles are fixed on the outer circumferential surface of the annular plate body, and the bristles dredge the discharge holes (22) from the inner side of the screening cylinder (3).
4. The UHPC ultra-high performance concrete raw material screening apparatus according to claim 2, wherein the crushing cone (73) has a pyramid-like structure, and a plurality of crushing cones (73) are fixed on the swing plate (71) at equal intervals.
5. UHPC ultra-high performance concrete raw material screening device according to claim 1, characterized in that the conveying means (24) comprises a conveyor belt arranged below the screening drum (3), conveyor rollers, said conveyor belt being mounted with the conveyor rollers, the conveyor rollers being driven by a conveyor motor, the conveying direction of the conveyor belt being adjustable.
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