CN110227643B - Sand screening device with multistage screening function for building construction - Google Patents
Sand screening device with multistage screening function for building construction Download PDFInfo
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- CN110227643B CN110227643B CN201810965771.2A CN201810965771A CN110227643B CN 110227643 B CN110227643 B CN 110227643B CN 201810965771 A CN201810965771 A CN 201810965771A CN 110227643 B CN110227643 B CN 110227643B
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- 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
- B07B1/24—Revolving drums with fixed or moving interior agitators
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention belongs to the technical field of building construction, and particularly relates to a sand screening device with a multi-stage screening function for building construction. The sand screening device has the advantages that workers can conveniently put sand into the box body, the consumption of manpower and material resources for sand screening work is reduced, the sand screening efficiency is effectively improved, the sizes of the sieve pores of the multiple filter cylinders are gradually reduced from top to bottom, so that the sand screening device has a multi-stage screening function, the sand screening effect is effectively improved, the vibration amplitude of the sand screening device in the using process can be effectively weakened, and the stability and the safety of the sand screening device in the using process are effectively improved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a sand screening device with a multistage screening function for building construction.
Background
The building construction refers to production activities in the engineering construction implementation stage, is the construction process of various buildings, and also can be a process of changing various lines on a design drawing into a real object at a specified place. The method comprises foundation engineering construction, main structure construction, roofing engineering construction, decoration engineering construction and the like. The construction work place is called a "construction site" or a "construction site", also called a construction site, and the construction work is a production movement performed by people to construct various building products in a certain space and time according to a specific design blueprint by using various building materials and mechanical equipment. The method comprises the whole production process from construction preparation, earth breaking and engineering completion acceptance. In the process, construction preparation, construction organization design and management, earthwork engineering, blasting engineering, foundation engineering, reinforcement engineering, formwork engineering, scaffold engineering, concrete engineering, prestressed concrete engineering, masonry engineering, steel structure engineering, wood structure engineering, structure installation engineering and the like are carried out, and construction project information management refers to the sum of a series of works of collecting, processing, storing, transmitting and applying various professional information in a planned way by a project manager with project management as a target and construction project information as a management object.
Through retrieval, chinese patent with grant number CN201710836998.2 discloses a building sand screening device convenient for screening sand, which comprises an electric telescopic rod, and the sand screening device in the above patent has the following disadvantages: the function is simple, the material loading of being not convenient for, influences the efficiency of screening husky work, can not satisfy the requirement well.
Disclosure of Invention
Based on the technical problems that the sand screening device is simple in function, inconvenient to feed, and incapable of meeting requirements well, the sand screening device with the multistage screening function for building construction is provided.
The invention provides a sand screening device with a multistage screening function for building construction, which comprises a bottom plate, wherein the outer walls of two sides of the bottom plate are respectively connected with a mounting plate through bolts, the outer walls of the bottoms of the two mounting plates are respectively connected with two symmetrically arranged sleeves through bolts, the inner walls of the four sleeves are respectively sleeved with a hydraulic oil cylinder, the outer wall of the bottom of the hydraulic oil cylinder is welded with a stabilizing plate, the outer wall of one side of the hydraulic oil cylinder, which is far away from the stabilizing plate, is connected with a first damping spring through bolts, one end of the first damping spring, which is far away from the hydraulic oil cylinder, is connected with the outer wall of the bottom of the mounting plate through bolts, four corners of the outer wall of the bottom plate are respectively connected with universal wheels through bolts, the outer wall of the bottom plate is connected with a processor box through bolts, the outer wall of one side of the processor box is provided with heat dissipation holes, the outer wall of the bottom plate is connected with a controller box through bolts, and the outer wall of one side of the controller box is connected with a display screen through bolts, the outer wall of one side of the controller box is connected with a control button through a spring buckle, the outer wall of the top of the bottom plate is bonded with a shock pad, the outer wall of one side, away from the bottom plate, of the shock pad is bonded with a top plate, the outer wall of the top of the shock pad is provided with a shock absorption hole, the inner wall of the shock absorption hole is inserted with a second shock absorption spring, the outer wall of one side, away from the bottom plate, of the top plate is connected with a support frame through a bolt, the outer wall of one side of the support frame is connected with a feeding box through a bolt, the outer wall of one side of the feeding box is connected with a second motor through a bolt, the output shaft of the second motor is connected with a second driving wheel through a bolt, the inner wall of one side of the feeding box and the inner part of one side of the shell are both connected with second connecting bearings through bolts, the inner walls of the two second connecting bearings are inserted with the same second rotating rod, the outer wall of the second rotating rod is welded with a second screw rod, and the outer wall of one side of the second rotating rod is welded with a second driven wheel, the outer walls of the second driving wheel and the second driven wheel are sleeved with the same second transmission belt.
Preferably, the number of the first damping springs is two to six, the two to six first damping springs are uniformly distributed on the outer wall of the top of the hydraulic oil cylinder at equal intervals, the number of the second damping springs is six to twenty, and the six to twenty second damping springs are uniformly distributed between the top plate and the bottom plate at equal intervals.
Preferably, the discharge opening has been seted up to last workbin one side outer wall, and the grafting of discharge opening inner wall has a feed cylinder, goes up workbin one side outer wall and has seted up the feed port, and the grafting of feed port inner wall has the feeder hopper.
Preferably, the outer wall of one side of the top plate, which is far away from the bottom plate, is connected with the box body through a bolt, the outer wall of one side of the box body is provided with a mounting hole, and the inner wall of the mounting hole is inserted with a first connecting bearing.
Preferably, the inner wall of the first connecting bearing is inserted with a first rotating rod, and the outer wall of one side of the first rotating rod is connected with a first driven wheel through a bolt.
Preferably, the outer wall of the first rotating rod is connected with a filter cylinder through a bolt, the outer wall of the first rotating rod is welded with a first screw rod, the first screw rod is located inside the filter cylinder, and a gap of five centimeters to ten centimeters is reserved between the outer wall of one side of the first screw rod and the inner wall of the filter cylinder.
Preferably, the outer wall of one side of the mounting plate, which is far away from the hydraulic oil cylinder, is connected with a first motor through a bolt, and an output shaft of the first motor is connected with a first driving wheel through a bolt.
Preferably, the outer wall of one side of the first rotating rod is connected with a first driven wheel through a bolt, and the outer wall of the first driving wheel and the outer wall of the first driven wheel are sleeved with the same first transmission belt.
Preferably, the inner wall of one side of the box body is connected with a material baffle through a bolt, the inner wall of the opposite side of the box body is connected with the same blanking box through a bolt, a blanking barrel is welded on one side of the outer wall of the bottom of the blanking box, and the blanking barrel is communicated with the inside of the blanking box.
Preferably, the first motor and the second motor are both connected with a switch through a wire, and the switch is connected with a power supply.
The beneficial effects of the invention are as follows:
1. through being provided with the workbin, the sand falls into the box through going out the feed cylinder, filters the screening by the inside component of box again, makes things convenient for the staff to drop into the sand in the box, reduces the consumption of screening husky work manpower and materials, effectively improves the efficiency of screening husky work.
2. Through being provided with a plurality of cartridge filters, the sand flows out the back from the play feed cylinder, at first falls on the striker plate at top, then in the sand got into the cartridge filter at top along the striker plate, the sieve mesh size of a plurality of cartridge filters reduced from top to bottom gradually for the device has the function of multistage screening, effectively improves the effect of sand screening work.
3. Through being provided with first damping spring, second damping spring and shock pad, can effectively weaken the vibration range in the device use, stability and security when effectively improving the device use.
Drawings
Fig. 1 is a schematic structural diagram of a sand screening device with multi-stage screening function for building construction according to the present invention;
FIG. 2 is a schematic bottom view of a sand screening device with multi-stage screening function for building construction according to the present invention;
FIG. 3 is a schematic view of a feeding box structure of a sand screening device with multi-stage screening function for building construction according to the present invention;
fig. 4 is a schematic structural diagram of a filter cartridge of a sand screening device with multi-stage screening function for building construction according to the present invention;
fig. 5 is a schematic structural view of a first driven wheel of a sand screening device with multi-stage screening function for building construction according to the present invention.
In the figure: the device comprises a stabilizing plate 1, a hydraulic oil cylinder 2, a first damping spring 3, a sleeve 4, a universal wheel 5, a processor box 6, a heat dissipation hole 7, a controller box 8, a display screen 9, a top plate 10, a bottom plate 11, a damping cushion 12, a second damping spring 13, a mounting plate 14, a first motor 15, a first driving wheel 16, a first transmission belt 17, a first rotating rod 18, a first driven wheel 19, a box body 20, a first connecting bearing 21, a blanking box 22, a filter cartridge 23, a first screw rod 24, a material baffle 25, a material outlet cylinder 26, a second screw rod 27, a second rotating rod 28, a second motor 29, a material feeding box 30, a supporting frame 31, a second driving wheel 32, a second transmission belt 33, a second driven wheel 34, a second connecting bearing 35 and a feeding hopper 36.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a sand screening device with multi-stage screening function for building construction comprises a base plate 11, wherein the outer walls of two sides of the base plate 11 are respectively connected with a mounting plate 14 through bolts, the outer walls of the bottoms of the two mounting plates 14 are respectively connected with two symmetrically arranged sleeves 4 through bolts, the inner walls of the four sleeves 4 are respectively sleeved with a hydraulic oil cylinder 2, the outer wall of the bottom of the hydraulic oil cylinder 2 is welded with a stabilizing plate 1, the outer wall of one side of the hydraulic oil cylinder 2, which is far away from the stabilizing plate 1, is connected with a first damping spring 3 through bolts, one end of the first damping spring 3, which is far away from the hydraulic oil cylinder 2, is connected with the outer wall of the bottom of the mounting plate 14 through bolts, four corners of the outer wall of the bottom of the base plate 11 are respectively connected with universal wheels 5 through bolts, the outer wall of the bottom of the base plate 11 is connected with a processor box 6 through bolts, heat dissipation holes 7 are formed in the outer wall of one side of the processor box 6, and the outer wall of the bottom of the base plate 11 is connected with a controller box 8 through bolts, the outer wall of one side of the controller box 8 is connected with a display screen 9 through a bolt, the outer wall of one side of the controller box 8 is connected with a control button through a spring buckle, the outer wall of the top of the bottom plate 11 is adhered with a shock pad 12, the outer wall of one side, far away from the bottom plate 11, of the shock pad 12 is adhered with a top plate 10, the outer wall of the top of the shock pad 12 is provided with a shock absorption hole, the inner wall of the shock absorption hole is inserted with a second shock absorption spring 13, the outer wall of one side, far away from the bottom plate 11, of the top plate 10 is connected with a support frame 31 through a bolt, the outer wall of one side of the support frame 31 is connected with a feeding box 30 through a bolt, the outer wall of one side of the feeding box 30 is connected with a second motor 29 through a bolt, the output shaft of the second motor 29 is connected with a second driving wheel 32 through a bolt, the inner wall of one side of the feeding box 30 and the inside of one side of the shell are both connected with a second connecting bearing 35 through bolts, and the same second rotating rod 28 is inserted between the inner walls of the two second connecting bearings 35, the outer wall of the second rotating rod 28 is welded with a second screw rod 27, the outer wall of one side of the second rotating rod 28 is welded with a second driven wheel 34, and the outer walls of the second driving wheel 32 and the second driven wheel 34 are sleeved with a same second transmission belt 33.
In the invention, the number of the first damping springs 3 is two to six, the two to six first damping springs 3 are uniformly distributed on the outer wall of the top part of the hydraulic oil cylinder 2 at equal intervals, the number of the second damping springs 13 is six to twenty, the six to twenty second damping springs 13 are uniformly distributed between the top plate 10 and the bottom plate 11 at equal intervals, the outer wall of one side of the upper material box 30 is provided with a discharge hole, the inner wall of the discharge hole is inserted with a discharge cylinder 26, the outer wall of one side of the upper material box 30 is provided with a feed hole, the inner wall of the feed hole is inserted with a feed hopper 36, the outer wall of one side of the top plate 10 far away from the bottom plate 11 is connected with a box body 20 through a bolt, the outer wall of one side of the box body 20 is provided with a mounting hole, the inner wall of the mounting hole is inserted with a first connecting bearing 21, the inner wall of the first connecting bearing 21 is inserted with a first rotating rod 18, the outer wall of one side of the first rotating rod 18 is connected with a first driven wheel 19 through a bolt, the outer wall of the first rotating rod 18 is connected with a filter cylinder 23 through a bolt, the filter cartridge 23 at the top filters sand in the rotating process, then the sand filtered by the filter cartridge at the top falls into the blanking cartridge 22 at the top, the sand falls onto the baffle plate 25 below along the blanking cartridge 22, then enters the filter cartridge 23 below for secondary filtering, the sizes of the sieve pores of the plurality of filter cartridges 23 are gradually reduced from top to bottom, the outer wall of the first rotating rod 18 is welded with the first screw rod 24, the first screw rod 24 is positioned in the filter cartridge 23, a gap of five to ten centimeters is reserved between the outer wall of one side of the first screw rod 24 and the inner wall of the filter cartridge 23, the outer wall of one side of the mounting plate 14 far away from the hydraulic oil cylinder 2 is connected with the first motor 15 through bolts, the output shaft of the first motor 15 is connected with the first driving wheel 16 through bolts, the outer wall of one side of the first rotating rod 18 is connected with the first driven wheel 19 through bolts, and the outer walls of the first driving wheel 16 and the first driven wheel 19 are sleeved with the same first driving belt 17, the inner wall of one side of the box body 20 is connected with a material baffle 25 through a bolt, the inner wall of one side of the box body 20 opposite to the material baffle is connected with the same blanking box 22 through a bolt, a blanking cylinder is welded on one side of the outer wall of the bottom of the blanking box 22 and communicated with the inside of the blanking box 22, the first motor 15 and the second motor 29 are both connected with a switch through a wire, and the switch is connected with a power supply.
When the sand screening device is used, sand needing to be screened is put into the feeding box 30 through the feeding hopper 36, the second motor 29 is started, the second motor 29 drives the second rotating rod 28 to rotate through the cooperation of the second driving wheel 32, the second driven wheel 34 and the second transmission belt 33, so as to drive the second spiral rod 27 to rotate, sand in the feeding box 30 rises, the sand falls into the box body 20 through the discharging barrel 26, firstly falls on the baffle plate 25 at the top, then the sand enters the filter cylinder 23 at the top along the baffle plate 25, the first motor 15 is started, the first motor 15 drives the first rotating rod 18 to rotate through the cooperation of the first driving wheel 16, the first driven wheel 19 and the first transmission belt 17, so as to drive the filter cylinder 23 and the first spiral rod 24 to rotate, the sand in the filter cylinder 23 at the top is filtered in the rotating process, then the sand filtered by the filter cylinder 23 at the top falls into the feeding box 22 at the top, sand falls to the striker plate 25 of below along lower magazine 22 again on, then reentrant below cartridge filter 23 carries out the secondary filtration, and the sieve mesh size of a plurality of cartridge filters 23 reduces from top to bottom gradually, and first damping spring 3, second damping spring 13 and shock pad 12 can effectively weaken the vibrations range in the device use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The sand screening device with the multi-stage screening function for building construction comprises a base plate (11) and is characterized in that the outer walls of two sides of the base plate (11) are connected with mounting plates (14) through bolts, the outer walls of the bottoms of the two mounting plates (14) are connected with two symmetrically arranged sleeves (4) through bolts, the inner walls of the four sleeves (4) are sleeved with hydraulic oil cylinders (2), the outer wall of the bottom of each hydraulic oil cylinder (2) is welded with a stabilizing plate (1), the outer wall of one side, away from the stabilizing plate (1), of each hydraulic oil cylinder (2) is connected with a first damping spring (3) through bolts, one end, away from the hydraulic oil cylinder (2), of each first damping spring (3) is connected with the outer wall of the bottom of the mounting plate (14) through bolts, four corners of the outer wall of the bottom of the base plate (11) are connected with universal wheels (5) through bolts, and the outer wall of the bottom of the base plate (11) is connected with a processor box (6) through bolts, the outer wall of one side of the processor box (6) is provided with heat dissipation holes (7), the outer wall of the bottom plate (11) is connected with a controller box (8) through bolts, the outer wall of one side of the controller box (8) is connected with a display screen (9) through bolts, the outer wall of one side of the controller box (8) is connected with a control button through a spring buckle, the outer wall of the top of the bottom plate (11) is bonded with a shock pad (12), the outer wall of one side, far away from the bottom plate (11), of the shock pad (12) is bonded with a top plate (10), the outer wall of the top of the shock pad (12) is provided with shock absorption holes, the inner wall of the shock absorption holes is inserted with second shock absorption springs (13), the outer wall of one side, far away from the bottom plate (11), of the top plate (10) is connected with a support frame (31) through bolts, the outer wall of one side of the support frame (31) is connected with a feeding box (30) through bolts, the outer wall of one side of the feeding box (30) is connected with a second motor (29) through bolts, the output shaft of the second motor (29) is connected with a second driving wheel (32) through a bolt, the inner wall of one side of the feeding box (30) and the inner part of one side of the shell are both connected with second connecting bearings (35) through bolts, the inner walls of the two second connecting bearings (35) are inserted with the same second rotating rod (28), the outer wall of the second rotating rod (28) is welded with a second screw rod (27), the outer wall of one side of the second rotating rod (28) is welded with a second driven wheel (34), and the outer walls of the second driving wheel (32) and the second driven wheel (34) are sleeved with the same second transmission belt (33);
the number of the first damping springs (3) is two to six, the two to six first damping springs (3) are uniformly distributed on the outer wall of the top of the hydraulic oil cylinder (2) at equal intervals, the number of the second damping springs (13) is six to twenty, and the six to twenty second damping springs (13) are uniformly distributed between the top plate (10) and the bottom plate (11) at equal intervals;
the outer wall of one side, far away from the bottom plate (11), of the top plate (10) is connected with a box body (20) through a bolt, a mounting hole is formed in the outer wall of one side of the box body (20), and a first connecting bearing (21) is inserted into the inner wall of the mounting hole;
a first rotating rod (18) is inserted into the inner wall of the first connecting bearing (21), and the outer wall of one side of the first rotating rod (18) is connected with a first driven wheel (19) through a bolt;
the outer wall of the first rotating rod (18) is connected with a filter cylinder (23) through a bolt, a first screw rod (24) is welded on the outer wall of the first rotating rod (18), the first screw rod (24) is located inside the filter cylinder (23), and a gap of five centimeters to ten centimeters is reserved between the outer wall of one side of the first screw rod (24) and the inner wall of the filter cylinder (23).
2. The sand screening device with the multistage screening function for building construction as claimed in claim 1, wherein a discharge hole is formed in the outer wall of one side of the upper material box (30), a discharge barrel (26) is inserted into the inner wall of the discharge hole, a feed hole is formed in the outer wall of one side of the upper material box (30), and a feed hopper (36) is inserted into the inner wall of the feed hole.
3. The sand screening device with the multistage screening function for building construction as claimed in claim 1, wherein a first driven wheel (19) is connected to the outer wall of one side of the first rotating rod (18) through a bolt, and the same first transmission belt (17) is sleeved on the outer walls of the first driving wheel (16) and the first driven wheel (19).
4. The sand screening device with the multistage screening function for building construction according to claim 1, wherein the inner wall of one side of the box body (20) is connected with the material baffle (25) through a bolt, the inner wall of the opposite side of the box body (20) is connected with the same blanking box (22) through a bolt, a blanking barrel is welded on one side of the outer wall of the bottom of the blanking box (22), and the blanking barrel is communicated with the inside of the blanking box (22).
5. The sand screening device with the multistage screening function for the building construction according to claim 1, wherein a first motor (15) is connected to the outer wall of one side, away from the hydraulic oil cylinder (2), of the mounting plate (14) through a bolt, and a first driving wheel (16) is connected to an output shaft of the first motor (15) through a bolt.
6. The sand screening device with the multi-stage screening function for building construction according to claim 5, wherein the first motor (15) and the second motor (29) are connected with a switch through wires, and the switch is connected with a power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810965771.2A CN110227643B (en) | 2018-08-23 | 2018-08-23 | Sand screening device with multistage screening function for building construction |
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| CN201810965771.2A CN110227643B (en) | 2018-08-23 | 2018-08-23 | Sand screening device with multistage screening function for building construction |
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| CN110227643B true CN110227643B (en) | 2022-04-19 |
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| CN111632809A (en) * | 2020-04-16 | 2020-09-08 | 四川省平武锰业(集团)有限公司 | Manganese ore raw material screening equipment |
| CN111558524A (en) * | 2020-05-25 | 2020-08-21 | 顾世来 | Multistage screening sand machine for building |
| CN111940277A (en) * | 2020-08-03 | 2020-11-17 | 汪波 | Sand screening equipment for building construction |
| CN112427289A (en) * | 2020-12-09 | 2021-03-02 | 重庆地之根再生资源开发有限责任公司 | Multistage screening equipment is used in recycled concrete processing |
| CN114100838A (en) * | 2021-10-28 | 2022-03-01 | 三峡昌耀管廊建设有限公司 | Quartz sand grading system and method applied to brick making |
| CN114733401B (en) * | 2022-04-29 | 2023-02-03 | 江苏迅霆建设工程有限公司 | Mixing and stirring device for house construction |
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