CN117920570A - Screening plant is used in recycled concrete processing - Google Patents

Screening plant is used in recycled concrete processing Download PDF

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Publication number
CN117920570A
CN117920570A CN202410099290.3A CN202410099290A CN117920570A CN 117920570 A CN117920570 A CN 117920570A CN 202410099290 A CN202410099290 A CN 202410099290A CN 117920570 A CN117920570 A CN 117920570A
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CN
China
Prior art keywords
mounting frame
base
fixedly connected
recycled concrete
fixedly installed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410099290.3A
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Chinese (zh)
Inventor
凌梦洁
朱文超
郑锡彬
陈建中
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Haining Haitai Building Materials Co ltd
Original Assignee
Haining Haitai Building Materials Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haining Haitai Building Materials Co ltd filed Critical Haining Haitai Building Materials Co ltd
Priority to CN202410099290.3A priority Critical patent/CN117920570A/en
Publication of CN117920570A publication Critical patent/CN117920570A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens

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  • Combined Means For Separation Of Solids (AREA)

Abstract

The invention discloses a screening device for processing recycled concrete, which comprises a base, wherein a plurality of H-shaped brackets are fixedly arranged at the top of the base, a feeding pipe is fixedly arranged at the top of each H-shaped bracket, two spiral shafts are rotatably arranged in the feeding pipe and are connected through a universal shaft, a discharge hole is formed in one end of the feeding pipe, a first mounting frame is fixedly connected to the top of the base, a through hole is formed in one side of the surface of the first mounting frame, the through hole is positioned below the discharge hole, and a material blocking frame is fixedly arranged on the inner side wall of the through hole. According to the invention, by arranging the mechanisms such as the screw shaft, the power motor, the slide way and the like, the screw shaft is driven by the power motor to rotate, the screw shaft drives the regenerated concrete to ascend along the feeding pipe, and finally the regenerated concrete is placed through the slide way, so that the machine can automatically feed, the manpower resources are saved, and the cost is reduced.

Description

Screening plant is used in recycled concrete processing
Technical Field
The invention relates to the technical field of recycled concrete, in particular to a screening device for recycled concrete processing.
Background
Along with the acceleration of the urban process, the generation amount of the construction wastes is increased, how to effectively treat the wastes and realize the recycling of the wastes is an important problem, and the construction wastes such as concrete, dregs, cement blocks, crushed stone, brick and tile fragments, waste mortar and the like can be crushed and screened to be processed into recycled aggregate to realize the recycling of resources.
In the prior art, the screening device for recycled concrete processing has lower automation degree, needs manual feeding and discharging, has high labor intensity and low batch production capacity, cannot form automatic production, wastes a large amount of manpower resources, increases cost, cannot automatically screen, has lower screening speed and low efficiency, and aims to solve the problem, so that the screening device for recycled concrete processing is provided.
Disclosure of Invention
The invention aims to solve the technical problems that the screening device for processing the recycled concrete is low in automation degree, high in labor intensity, low in batch production capacity, incapable of forming automatic production, high in manpower resource waste, high in cost, incapable of conducting automatic screening, low in screening speed and low in efficiency, and manual feeding and discharging are needed.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a screening plant is used in recycled concrete processing, which comprises a base, the top fixed mounting of base has a plurality of H type supports, and a plurality of the top fixed mounting of H type support has the material loading pipe, the inside rotation of material loading pipe is installed two screw shafts, and two connect through the cardan shaft between the screw shaft, the discharge gate has been seted up to the one end of material loading pipe, the top fixedly connected with first mounting bracket of base, the through-hole has been seted up to one side of the surface of first mounting bracket, the through-hole is located the below of discharge gate, the inside wall fixed mounting of through-hole has a fender frame, the top fixedly connected with second mounting bracket of base, the mounting panel is all installed to the opposite surface side of first mounting bracket and second mounting bracket, and the top of two mounting panels is all fixedly mounted with spring, the top fixedly mounted of spring has the slide; the top fixed mounting of first mounting bracket has electric motor, electric motor's output fixed mounting has the rotation wheel, the surface one side rotation of rotation wheel is installed first support, the one end rotation of first support is installed the second support, the one end of second support is fixed connection with the surface one side of slide, carries out automatic feeding to recycled concrete.
The slide is located the below that keeps off the material frame, the inside wall fixed mounting of slide has the filter screen, the surface fixed mounting of filter screen has a plurality of baffles, can screen the recycled concrete.
The top of base fixed mounting has power motor, the one end of screw axis runs through the outside that extends to the upper material pipe and power motor's output fixed connection, can provide power for the screw axis.
The top fixedly connected with supporting shoe of base, the top slidable mounting of supporting shoe has the box that gathers materials, the box that gathers materials is located the bottom of slide, the equal fixedly connected with in surface both sides of box that gathers materials two third supports, four the screw hole has all been seted up on the surface of third support, four the inside of screw hole is all threaded and is installed the screw, four the support frame is all installed in the bottom of screw, and the surface one side of four support frames all is sliding connection with the surface of box that gathers materials, four the gyro wheel is installed in the inside wall of support frame all rotation, can collect the recycled concrete of screening.
The surface opposite side of base is provided with the garbage collection box, the garbage collection box is located the one end of slide, can collect the recycled concrete that does not accord with the standard.
The other end of the feeding pipe is provided with a feeding hole, the inner side wall of the feeding hole is fixedly provided with a feeding bin, and raw materials are put into the machine.
The surface both sides of first mounting bracket rotate and install two first stoppers, two first spout has all been seted up on the surface of first stopper, two the equal slidable mounting of inside wall of first spout has first slider, two the one end of first slider is all run through and is fixed connection to the outside of first stopper and the surface one side of slide, two second stoppers of surface both sides fixedly connected with of second mounting bracket, two the second spout has all been seted up on the surface of second stopper, two the equal slidable mounting of inside wall of second spout has the second slider, two the one end of second slider is all run through and is fixed connection to the outside of extension to the second stopper and the surface one side of slide, can make the vibration range of filter screen increase.
The beneficial effects of the invention are as follows:
1. According to the invention, by arranging the mechanisms such as the screw shaft, the power motor, the slide way and the like, the screw shaft is driven by the power motor to rotate, the screw shaft drives the regenerated concrete to ascend along the feeding pipe, and finally the regenerated concrete is placed through the slide way, so that the machine can automatically feed, the manpower resources are saved, and the cost is reduced.
2. According to the invention, by arranging the mechanisms such as the spring, the rotating wheel, the filter screen and the like, the electric motor is utilized to drive the rotating wheel to rotate, the rotating wheel drives the filter screen to move, and meanwhile, the filter screen vibrates through the elasticity of the spring, so that the regenerated concrete can be automatically screened, automatic production can be performed, and the efficiency is improved.
Drawings
FIG. 1 is a schematic perspective view of a screening device for recycled concrete processing according to the present invention;
FIG. 2 is a schematic plan view of a screening device for recycled concrete processing according to the present invention;
FIG. 3 is an enlarged view of FIG. 1A in accordance with the present invention;
fig. 4 is an enlarged view of B of fig. 1 in accordance with the present invention.
In the figure, 1, a base; 2. a support block; 3. a collection box; 4. a power motor; 5. a second bracket; 6. feeding pipes; 7. feeding a storage bin; 8. a screw shaft; 9. a spring; 10. a first mounting frame; 11. a material blocking frame; 12. a slideway; 13. a baffle; 14. a filter screen; 15. a mounting plate; 16. a third bracket; 17. a screw; 18. a roller; 19. an H-shaped bracket; 20. a waste collection box; 21. a first limiting block; 22. a first chute; 23. a first slider; 24. a second slider; 25. a second chute; 26. a second limiting block; 27. a second mounting frame; 28. a rotating wheel; 29. a first bracket.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 1 and 2, a screening device for recycled concrete processing comprises a base 1, wherein a plurality of H-shaped brackets 19 are fixedly installed at the top of the base 1, a feeding pipe 6 is fixedly installed at the top of the plurality of H-shaped brackets 19, two screw shafts 8 are rotatably installed in the feeding pipe 6, the two screw shafts 8 are connected through a universal shaft, a discharge hole is formed in one end of the feeding pipe 6, a first mounting frame 10 is fixedly connected at the top of the base 1, a through hole is formed in one side of the surface of the first mounting frame 10, the through hole is located below the discharge hole, a material blocking frame 11 is fixedly installed at the inner side wall of the through hole, a second mounting frame 27 is fixedly connected at the top of the base 1, mounting plates 15 are installed at one side of the opposite surfaces of the first mounting frame 10 and the second mounting frame 27, springs 9 are fixedly installed at the tops of the two mounting plates 15, and a slide rail 12 is fixedly installed at the top of the springs 9;
The top of first mounting bracket 10 is fixed mounting has electric motor, and electric motor's output fixed mounting has rotor 28, and rotor 28's surface one side rotates and installs first support 29, and second support 5 is installed in the rotation of one end of first support 29, and the one end of second support 5 is fixed connection with slide 12's surface one side, carries out automatic feeding to the recycled concrete.
As shown in fig. 1-4, a power motor 4 is fixedly installed at the top of the base 1, one end of a screw shaft 8 penetrates through the outer part extending to the upper material pipe 6 and is fixedly connected with the output end of the power motor 4, so that power can be provided for the screw shaft 8, two first limiting blocks 21 are rotatably installed on two sides of the surface of a first installation frame 10, first sliding grooves 22 are formed on the surfaces of the two first limiting blocks 21, first sliding blocks 23 are slidably installed on the inner side walls of the two first sliding grooves 22, one ends of the two first sliding blocks 23 penetrate through the outer part extending to the first limiting blocks 21 and are fixedly connected with one side of the surface of a sliding rail 12, two second limiting blocks 26 are fixedly connected with two sides of the surface of a second installation frame 27, second sliding grooves 25 are formed on the surfaces of the two second limiting blocks 26, second sliding blocks 24 are slidably installed on the inner side walls of the two second sliding grooves 25, one end of each second sliding block 24 penetrates through the outer part of each second limiting block 26 and is fixedly connected with one side of the surface of the slideway 12, so that the vibration amplitude of the filter screen 14 can be increased, the other side of the surface of the base 1 is provided with a waste collection box 20, the waste collection box 20 is positioned at one end of the slideway 12 and can collect regenerated concrete which does not meet the standard, the top of the base 1 is fixedly connected with a supporting block 2, the top of the supporting block 2 is slidably provided with a collecting box 3, the collecting box 3 is positioned at the bottom of the slideway 12, two sides of the surface of the collecting box 3 are fixedly connected with two third brackets 16, screw holes are formed in the surfaces of the four third brackets 16, screws 17 are arranged in the four screw holes in a threaded manner, the bottoms of the four screws 17 are rotatably provided with supporting frames, one side of the surfaces of the four supporting frames is slidably connected with the outer surface of the collecting box 3, the gyro wheel 18 is installed in the equal rotation of inside wall of four support frames, can collect the recycled concrete of screening, and slide 12 is located the below that keeps off material frame 11, and the inside wall fixed mounting of slide 12 has filter screen 14, and the surface fixed mounting of filter screen 14 has a plurality of baffles 13, can screen recycled concrete, and the feed inlet has been seted up to the other end of material loading pipe 6, and the inside wall fixed mounting of feed inlet has feed bin 7, puts into the machine with the raw and other materials.
When the invention is used, recycled concrete is poured into the feeding bin 7, the recycled concrete enters the feeding tube 6 from the feeding bin 7, the power motor 4 is started, the power motor 4 drives the screw shaft 8 to rotate, the screw shaft 8 drives the recycled concrete to rise, the recycled concrete enters the slideway 12 through the discharge hole and the material blocking frame 11, meanwhile, the electric motor is started, the electric motor drives the rotating wheel 28 to rotate, the roller 18 drives the first bracket 29 to rotate, the first bracket 29 drives the second bracket 5 to move up and down, the second bracket 5 drives the slideway 12 to move up and down, the slideway 12 drives the first sliding block 23 and the second sliding block 24 to move up and down in the first sliding groove 22 and the second sliding groove 25 respectively, the first sliding block 23 and the second sliding block 24 respectively drive the first limiting block 21 and the second limiting block 26, the space is increased through the filter screen 14 and the spring 9, the slideway 12 drives the filter screen 14 to move up and down, smaller particles enter the aggregate box 3, the unreveered recycled concrete enters the waste collecting box 20 to carry out secondary processing, the screws 17 drive the screws 17 to move up and down, and the screws 17 drive the rollers 18 to move up and down in the first sliding block 22 and the second sliding block 25 to move up and down in the first sliding block 25 and the second sliding block 2, the first sliding block and the second sliding block 23 and the second sliding block 2 are separated from the aggregate box 3 and the aggregate box 3 are separated into the ground by the first sliding block and the second sliding block.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims (7)

1.一种再生混凝土加工用筛分装置,包括底座(1),其特征在于:所述底座(1)的顶部固定安装有多个H型支(19)架,多个所述H型支架(19)的顶部固定安装有上料管(6),所述上料管(6)的内部转动安装有两个螺旋轴(8),两个所述螺旋轴(8)之间通过万向轴相连接,所述上料管(6)的一端开设有出料口,所述底座(1)的顶部固定连接有第一安装架(10),所述第一安装架(10)的表面一侧开设有通口,所述通口位于出料口的下方,所述通口的内侧壁固定安装有挡料框(11),所述底座(1)的顶部固定连接有第二安装架(27),所述第一安装架(10)和第二安装架(27)相对的表面一侧均安装有安装板(15),两个所述安装板(15)的顶部均固定安装有弹簧(9),所述弹簧(9)的顶部固定安装有滑道(12);所述第一安装架(10)的顶部固定安装有电动马达,所述电动马达的输出端固定安装有转动轮(28),所述转动轮(28)的表面一侧转动安装有第一支架(29),所述第一支架(29)的一端转动安装有第二支架(5),所述第二支架(5)的一端与滑道(12)的表面一侧为固定连接。。1. A screening device for recycled concrete processing, comprising a base (1), characterized in that: a plurality of H-shaped brackets (19) are fixedly installed on the top of the base (1), a feeding pipe (6) is fixedly installed on the top of the plurality of H-shaped brackets (19), two screw shafts (8) are rotatably installed inside the feeding pipe (6), the two screw shafts (8) are connected by a universal shaft, one end of the feeding pipe (6) is provided with a discharge port, a first mounting frame (10) is fixedly connected to the top of the base (1), a through opening is opened on one side of the surface of the first mounting frame (10), the through opening is located below the discharge port, a blocking frame (11) is fixedly installed on the inner side wall of the through opening, and the base (1) A second mounting frame (27) is fixedly connected to the top of the first mounting frame (10), a mounting plate (15) is installed on the opposite surface of the first mounting frame (10) and the second mounting frame (27), a spring (9) is fixedly installed on the top of the two mounting plates (15), and a slideway (12) is fixedly installed on the top of the spring (9); an electric motor is fixedly installed on the top of the first mounting frame (10), a rotating wheel (28) is fixedly installed on the output end of the electric motor, a first bracket (29) is rotatably installed on one side of the surface of the rotating wheel (28), a second bracket (5) is rotatably installed on one end of the first bracket (29), and one end of the second bracket (5) is fixedly connected to one side of the surface of the slideway (12). 2.根据权利要求1所述的一种再生混凝土加工用筛分装置,其特征在于:所述滑道(12)位于挡料框(11)的下方,所述滑道(12)的内侧壁固定安装有过滤网(14),所述过滤网(14)的表面固定安装有多个挡板(13)。2. A screening device for recycled concrete processing according to claim 1, characterized in that: the slide (12) is located below the material blocking frame (11), a filter screen (14) is fixedly installed on the inner wall of the slide (12), and a plurality of baffles (13) are fixedly installed on the surface of the filter screen (14). 3.根据权利要求1所述的一种再生混凝土加工用筛分装置,其特征在于:所述底座(1)的顶部固定安装有动力电机(4),所述螺旋轴(8)的一端贯穿延伸至上料管(6)的外部与动力电机(4)的输出端为固定连接。3. A screening device for recycled concrete processing according to claim 1, characterized in that a power motor (4) is fixedly installed on the top of the base (1), and one end of the spiral shaft (8) extends through the outside of the feeding pipe (6) and is fixedly connected to the output end of the power motor (4). 4.根据权利要求1所述的一种再生混凝土加工用筛分装置,其特征在于:所述底座(1)的顶部固定连接有支撑块(2),所述支撑块(2)的顶部滑动安装有集料盒(3),所述集料盒(3)位于滑道(12)的底部,所述集料盒(3)的表面两侧均固定连接有两个第三支架(16),四个所述第三支架(16)的表面均开设有螺丝孔,四个所述螺丝孔的内部均螺纹安装有螺丝(17),四个所述螺丝(17)的底部均转动安装有支撑架,且四个支撑架的表面一侧均与集料盒(3)的外表面为滑动连接,四个所述支撑架的内侧壁均转动安装有滚轮(18)。4. A screening device for recycled concrete processing according to claim 1, characterized in that: a support block (2) is fixedly connected to the top of the base (1), a collection box (3) is slidably installed on the top of the support block (2), the collection box (3) is located at the bottom of the slide (12), and two third brackets (16) are fixedly connected to both sides of the surface of the collection box (3), four third brackets (16) are provided with screw holes on the surface, screws (17) are threadedly installed inside the four screw holes, support frames are rotatably installed at the bottom of the four screws (17), and one side of the surface of the four support frames is slidably connected to the outer surface of the collection box (3), and rollers (18) are rotatably installed on the inner walls of the four support frames. 5.根据权利要求5所述的一种再生混凝土加工用筛分装置,其特征在于:所述底座(1)的表面另一侧设置有废料收集盒(20),所述废料收集盒(20)位于滑道(12)的一端。5. A screening device for recycled concrete processing according to claim 5, characterized in that a waste collection box (20) is provided on the other side of the surface of the base (1), and the waste collection box (20) is located at one end of the slideway (12). 6.根据权利要求1所述的一种再生混凝土加工用筛分装置,其特征在于:所述上料管(6)的另一端开设有进料口,所述进料口的内侧壁固定安装有送料仓(7)。6. A screening device for recycled concrete processing according to claim 1, characterized in that: a feed port is provided at the other end of the feed pipe (6), and a feeding bin (7) is fixedly installed on the inner side wall of the feed port. 7.根据权利要求1所述的一种再生混凝土加工用筛分装置,其特征在于:所述第一安装架(10)的表面两侧转动安装有两个第一限位块(21),两个所述第一限位块(21)的表面上均开设有第一滑槽(22),两个所述第一滑槽(22)的内侧壁均滑动安装有第一滑块(23),两个所述第一滑块(23)的一端均贯穿延伸至第一限位块(21)的外部与滑道(12)的表面一侧为固定连接,所述第二安装架(27)的表面两侧固定连接有两个第二限位块(26),两个所述第二限位块(26)的表面均开设有第二滑槽(25),两个所述第二滑槽(25)的内侧壁均滑动安装有第二滑块(24),两个所述第二滑块(24)的一端均贯穿延伸至第二限位块(26)的外部与滑道(12)的表面一侧为固定连接。7. A screening device for recycled concrete processing according to claim 1, characterized in that: two first limit blocks (21) are rotatably installed on both sides of the surface of the first mounting frame (10), a first slide groove (22) is provided on the surface of the two first limit blocks (21), and the inner side walls of the two first slide grooves (22) are slidably installed with first sliding blocks (23), one ends of the two first sliding blocks (23) extend through the outside of the first limit block (21) and are fixedly connected to one side of the surface of the slideway (12), and two second limit blocks (26) are fixedly connected to both sides of the surface of the second mounting frame (27), a second slide groove (25) is provided on the surface of the two second limit blocks (26), and the inner side walls of the two second slide grooves (25) are slidably installed with second sliding blocks (24), and one ends of the two second sliding blocks (24) extend through the outside of the second limit block (26) and are fixedly connected to one side of the surface of the slideway (12).
CN202410099290.3A 2024-01-24 2024-01-24 Screening plant is used in recycled concrete processing Pending CN117920570A (en)

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Application Number Priority Date Filing Date Title
CN202410099290.3A CN117920570A (en) 2024-01-24 2024-01-24 Screening plant is used in recycled concrete processing

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Application Number Priority Date Filing Date Title
CN202410099290.3A CN117920570A (en) 2024-01-24 2024-01-24 Screening plant is used in recycled concrete processing

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105558116A (en) * 2014-10-12 2016-05-11 黑龙江省康格尔科技有限公司 Electrical screening mechanical apparatus adopting motor-driven belt pulley mechanism
CN108745890A (en) * 2018-06-12 2018-11-06 合肥久多农业科技有限公司 A kind of crops deep processing screening plant
CN111842133A (en) * 2020-07-21 2020-10-30 张传华 Concrete wet screen mortar sieving mechanism for hydraulic engineering
CN112452739A (en) * 2020-11-04 2021-03-09 唐坤 Concrete raw material screening device for building construction
CN213854754U (en) * 2020-09-14 2021-08-03 永丰上达建材实业有限公司 Recovery unit is used in concrete waste regeneration
CN113351474A (en) * 2021-05-27 2021-09-07 张亮 City construction sand sieving mechanism
CN216026215U (en) * 2021-11-02 2022-03-15 时彬 Broken stone screening plant for building engineering

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105558116A (en) * 2014-10-12 2016-05-11 黑龙江省康格尔科技有限公司 Electrical screening mechanical apparatus adopting motor-driven belt pulley mechanism
CN108745890A (en) * 2018-06-12 2018-11-06 合肥久多农业科技有限公司 A kind of crops deep processing screening plant
CN111842133A (en) * 2020-07-21 2020-10-30 张传华 Concrete wet screen mortar sieving mechanism for hydraulic engineering
CN213854754U (en) * 2020-09-14 2021-08-03 永丰上达建材实业有限公司 Recovery unit is used in concrete waste regeneration
CN112452739A (en) * 2020-11-04 2021-03-09 唐坤 Concrete raw material screening device for building construction
CN113351474A (en) * 2021-05-27 2021-09-07 张亮 City construction sand sieving mechanism
CN216026215U (en) * 2021-11-02 2022-03-15 时彬 Broken stone screening plant for building engineering

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