Aggregate stirring and screening device for concrete production

Abstract

The invention relates to the technical field of concrete production, in particular to an aggregate stirring and screening device for concrete production, which comprises a U-shaped frame, a water storage tank for collecting water, a screening mechanism for screening aggregate in a grading manner and a cleaning mechanism, the top end of the water storage tank is fixedly connected with the bottom surface of the U-shaped frame, and the screening mechanism is located between two arms of the U-shaped frame; the screening mechanism comprises a supporting plate, an arc-shaped shell is arranged above the supporting plate, one end of the arc-shaped shell is fixedly connected with an arc-shaped plate, and the supporting plate is fixedly connected to the position between the two long side edges of the bottom face of the arc-shaped shell. According to the aggregate screening device, aggregate is put into the screening mechanism, then the screening mechanism is started to clean the aggregate, the aggregate adhesion condition is reduced, the cleaned aggregate is screened for multiple times through the screening mechanism, the aggregate is screened after the screening mechanism conducts primary water separation on the aggregate, the screening effect on the aggregate is improved, and the aggregate blocking condition is reduced; and therefore, the aggregate can be conveniently screened by a user.

Description

Technical Field

[0001] The invention relates to the technical field of concrete production, in particular to an aggregate mixing and screening device for concrete production. Background Art

[0002] Concrete aggregate is a granular loose material that acts as a skeleton or filler in concrete. It is divided into coarse aggregate and fine aggregate. Coarse aggregate generally comes from natural rocks or rock particles crushed after mining. During the aggregate preparation and production process, it is easy for particles such as mud and sand to be mixed into the aggregate, and the aggregate may not be screened when it is produced and bagged. During the production of concrete, it is necessary to stir the raw materials such as admixtures, cement, aggregates, and water to fully mix them to form a uniform concrete slurry. The aggregate needs to have a suitable particle size and reasonable grading when stirring, so the aggregate needs to be screened before concrete production. However, generally, the aggregate is easily mixed with mud and sand, and it is easy to stick together under high humidity conditions, which is inconvenient. When screening the aggregate, a screen is usually used. However, when the aggregate is screened, it is usually screened directly. Some aggregates may be stuck in the holes of the screen due to their own shape, particle size, etc., affecting the use of the screen, and the screen needs to be cleaned manually, which is inconvenient. Summary of the invention

[0003] The object of the present invention is to provide an aggregate mixing and screening device for concrete production to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An aggregate mixing and screening device for concrete production, comprising:

[0006] The U-shaped frame, a water storage tank for collecting water, a screening mechanism and a cleaning mechanism for grading and screening aggregates, the top of the water storage tank is fixedly connected to the bottom surface of the U-shaped frame, the screening mechanism is located between the two arms of the U-shaped frame, the screening mechanism includes a support plate, and an arc shell is arranged above the support plate, one end of the arc shell is fixedly connected to an arc plate, the support plate is fixedly connected between the two long sides of the bottom surface of the arc shell, and the support plate is fixedly connected between the two long sides of the bottom surface of the arc plate, the length of the support plate is equal to the sum of the length of the arc shell and the length of the arc plate, a plurality of partitions are fixedly sleeved on the inner arc surface of the arc plate, and a plurality of slots are provided on the inner arc surface of the arc plate between two adjacent partitions, one end of the support plate is located at the arc shell, and one end of the top surface of the support plate is fixedly connected to a positioning plate, a plurality of connecting pipe openings are provided on one side of the positioning plate, a water pipe is fixedly sleeved inside any connecting pipe opening, and the cleaning mechanism is located between the two arms of the U-shaped frame.

[0007] Furthermore, baffles are fixedly sleeved at both ends of the inner arc surface of the arc-shaped shell.

[0008] The invention further comprises: slewing bearings are arranged at both ends of the support plate, and any slewing bearing comprises an inner ring and an outer ring, wherein the outer ring of a slewing bearing is fixedly connected to two guide rods, and one end of the two guide rods are rotatably connected to two opposite inner walls of the U-shaped frame, the top surface of the U-shaped frame is fixedly connected to a support plate, and the top surface of the support plate is fixedly connected to a driving box, a plurality of electric hoists are arranged inside the driving box, and the plurality of electric hoists are equipped with slings, one end of the plurality of slings are fixedly connected to the outer side wall of the outer ring of another slewing bearing, the bottom surfaces of both ends of the support plate are fixedly connected to connecting plates, and one end of the two connecting plates are fixedly connected to the inner side walls of the inner rings of the two slewing bearings, and the support plate, arc shell and arc plate are all located inside the two slewing bearings.

[0009] Further, the cleaning mechanism comprises:

[0010] A top plate and a plurality of shift rods, the top plate is arc-shaped, arc-shaped grooves are provided at both ends of the top plate, a clamping ring is fixedly connected to one side of the inner ring of the two slewing bearings, and the two clamping rings are respectively rotatably clamped in the two arc-shaped grooves, and one end of the plurality of shift rods is fixedly connected to the inner arc surface of the top plate.

[0011] Furthermore, the two opposite inner walls of the U-shaped frame are fixedly connected with rails, and a movable plate is arranged between the two rails, the two ends of the movable plate are respectively slidably connected to the inside of the two rails, the bottom center of the movable plate is rotatably connected to two support arms, and one end of the two support arms is rotatably connected to the center of the outer arc surface of the top plate.

[0012] Furthermore, a gear ring is arranged between the two slewing bearings, and the support plate, the arc shell and the arc plate are all located inside the gear ring, the gear ring is fixedly connected with a plate body on opposite sides, a plurality of connecting rods are fixedly connected between the top surface of any plate body and the bottom surface of the support plate, a power box is fixedly connected with a long side edge of the bottom surface of the top plate, and a power motor is arranged inside the power box, a U-shaped plate is fixedly connected with a long side edge of the bottom surface of the top plate, and a gear is rotatably connected between the two arms of the U-shaped plate, the motor shaft of the power motor is fixedly connected with the gear wheel shaft, and the gear is meshed with the gear ring.

[0013] Furthermore, the U-shaped frame is provided with connecting openings on two opposite sides, and the two connecting openings are both located below any slewing bearing.

[0014] Furthermore, a rectangular hole is provided on the inner bottom surface of the U-shaped frame, and the rectangular hole is located at the other end of the supporting plate, and the interior of the water storage tank is connected with the interior of the rectangular hole.

[0015] The invention further comprises: a box-shaped filter is movably sleeved inside the rectangular hole.

[0016] Further, a bracket is fixedly connected to the inner bottom surface of the U-shaped frame, and the bracket is located at one end of the support plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Put the aggregate into the screening mechanism, and then start the screening mechanism to clean the aggregate, wash away the mud on the aggregate, reduce the adhesion of the aggregate, and then use the screening mechanism to screen the aggregate multiple times after cleaning. After the screening mechanism performs preliminary water selection on the aggregate, the aggregate is screened to improve the screening effect of the aggregate and reduce the aggregate jamming, so as to facilitate the user to screen the aggregate.

[0019] 2. In the initial state, the support plate is placed horizontally, and the other slewing bearing is supported by the bracket. The support plate is located under the arc shell. The aggregate is piled at one end of the support plate, and then the power motor is started to drive the support plate to flip through the gear and gear ring, so that the support plate is located above the arc shell, and the aggregate is naturally supported by the arc shell. Then, the water pump and water pipe are used to spray water from the fixed plate to spray the aggregate in the arc shell, and then the power motor is started to drive the reciprocating rotating part of the arc shell, so that the aggregate inside the arc shell shakes synchronously with the arc shell, collides and scrapes each other, so that the mud and sand adhering to the aggregate fall off and mix in the water due to mutual collision and scraping, and the aggregate is rinsed to reduce the adhesion of the aggregate;

[0020] 3. After cleaning, start the power motor to drive the pallet to flip to the bottom of the arc shell through the gear and gear ring, so that the cleaned aggregate in the arc shell returns to the pallet, and then start multiple electric hoists to drive the slings to pull another slewing bearing upward, so that the pallet as a whole rotates around the two guide rods on a slewing bearing as the axis, so that the pallet forms an inclined state, and then start the power motor to drive the reciprocating rotating part of the pallet through the gear and gear ring, and cooperate with the water flow from the fixed plate to impact the aggregate, so that the aggregate is naturally distributed along the inclined pallet, and the heavier and larger aggregates are close to the other end of the pallet. The lighter and smaller aggregates are placed near one end of the support plate for preliminary sorting, and then the power motor is started to turn the support plate over, so that the support plate rotates to the top of the curved plate, and the aggregates fall to different notches of the curved plate. Then the power motor is started to drive the curved plate to swing back and forth, so that the aggregates in the curved plate swing through the adjacent notches to be screened. If there are aggregates that do not pass through the notches, the support plate can be turned down, and the tilt angle of the support plate can be adjusted by the electric hoist. After sorting the aggregates again, the curved plate is rotated to the bottom to screen the aggregates after the second sorting.

[0021] 4. When the arc plate rotates to the bottom of the support plate and the aggregate is screened, if the aggregate is stuck in the slot, the power motor is started to drive the support plate and the arc plate to flip synchronously, so that the support plate rotates to the top of the arc plate. During the rotation of the arc plate, most of the areas of all the slots on the arc plate pass through the adjacent levers, and the aggregate stuck in the slot can be automatically pushed out by the lever when passing through the lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the U-shaped plate structure in the present invention;

[0024] Figure 3 It is a schematic diagram of the positional relationship between the screening mechanism and the cleaning mechanism in the present invention;

[0025] Figure 4 It is a schematic diagram of the position relationship among the top plate, the slewing bearing, the supporting plate and the arc-shaped plate in the present invention;

[0026] Figure 5 It is a schematic diagram of the top plate, arc-shaped shell, arc-shaped plate and top plate structure in the present invention;

[0027] Figure 6 The present invention Figure 5 A partial enlarged view of the middle part;

[0028] Figure 7 It is a schematic diagram of the structure of the gear ring, plate body and connecting rod in the present invention.

[0029] In the figure: 100, U-shaped frame; 101, connecting port; 110, box-shaped filter; 120, bracket; 200, water tank; 300, screening mechanism; 310, support plate; 311, positioning plate; 312, connecting plate; 320, arc shell; 321, baffle; 330, arc plate; 331, partition; 332, notch; 340, slewing bearing; 341, guide rod; 342, snap ring; 350, gear ring; 351, plate body; 352, connecting rod; 360, drive box; 361, sling; 400, cleaning mechanism; 410, top plate; 411, arc slot; 420, lever; 430, rail; 440, moving plate; 441, support arm; 450, power box; 451, gear. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 7 In an embodiment of the present invention, an aggregate mixing and screening device for concrete production includes:

[0032] The U-shaped frame 100, a water storage tank 200 for collecting water, a screening mechanism 300 and a cleaning mechanism 400 for grading and screening aggregates, the top of the water storage tank 200 is fixedly connected to the bottom surface of the U-shaped frame 100, the screening mechanism 300 is located between the two arms of the U-shaped frame 100, the screening mechanism 300 includes a support plate 310, and an arc shell 320 is arranged above the support plate 310, one end of the arc shell 320 is fixedly connected to the arc plate 330, the support plate 310 is fixedly connected between the two long sides of the bottom surface of the arc shell 320, and the support plate 310 is fixedly connected to the bottom surface of the arc plate 330 Between the two long sides, the length of the support plate 310 is equal to the sum of the length of the arc shell 320 and the length of the arc plate 330, and a plurality of partitions 331 are fixedly sleeved on the inner arc surface of the arc plate 330, and a plurality of slots 332 are provided on the inner arc surface of the arc plate 330 between two adjacent partitions 331, one end of the support plate 310 is located at the arc shell 320, and a positioning plate 311 is fixedly connected to one end of the top surface of the support plate 310, and a plurality of connecting pipe openings are provided on one side of the positioning plate 311, and a water pipe is fixedly sleeved inside any connecting pipe opening, and the cleaning mechanism 400 is located between the two arms of the U-shaped frame 100.

[0033] Specifically, in the initial state, the support plate 310 is in a flat state and the support plate 310 is located at the bottom, and then the aggregate is placed on the top of the support plate 310 from one end of the support plate 310, and then the support plate 310 is turned over so that the support plate 310 is located at the top and the arc shell 320 is facing downward, so that the aggregate automatically rolls and is supported by the arc shell 320, and the water pipe is connected to the water pump so that the water pump sprays water from the positioning plate 311 through multiple water pipes, so that the water sprays the material contained in the arc shell 320, and at the same time, the reciprocating part is rotated while keeping the arc shell 320 located below the support plate 310, so that the material contained in the arc shell 320 reciprocates with the reciprocating arc shell 320, and the aggregates collide and scrape each other to separate the mud on the aggregates, and the mud and the water flow The aggregate is mixed and cleaned. After the aggregate is tilted, the support plate 310 is turned over so that the support plate 310 is located under the arc shell 320, so that the aggregate rolls back onto the support plate 310, and then one end of the support plate 310 is lifted to tilt the support plate 310, so that the water flowing out of the positioning plate 311 flows along the support plate 310, so that the water flows from one end of the support plate 310 to the other end, and the water drives the aggregate to move for preliminary sorting, and while the support plate 310 is kept under the arc shell 320, the support plate 310 is reciprocated to rotate the part so that the aggregate on the support plate 310 is synchronously shaken with the reciprocating shaking of the support plate 310, so that the aggregate is easier to be spread on the support plate 310 due to the shaking of the support plate 310, and the aggregate is shaken due to the impact of the tilted support plate 310 and the water flow. The pallet 310 is moved so that the larger aggregate moves a longer distance and is closer to the other end of the pallet 310, and the smaller stones move a shorter distance and are closer to one end of the pallet 310 due to their light weight and small volume, so that the aggregate can be preliminarily sorted, and then one end of the pallet 310 is lowered, and the pallet 310 is laid flat and then flipped over so that the pallet 310 is located above the arc-shaped shell 320, so that the aggregate on the pallet 310 is automatically contained by the arc-shaped plate 330, and the notches 332 between every two adjacent partitions 331 on the arc-shaped plate 330 have different specifications, and the width of the notches 332 closer to the arc-shaped shell 320 is smaller, and the width of the notches 332 closer to the other end of the pallet 310 is larger. After the preliminarily sorted aggregate is supported by the arc-shaped plate 330, the arc-shaped plate 330 is kept in the downward state The arc plate 330 is reciprocated to make the aggregate in the arc plate 330 naturally fall through the adjacent slots 332 due to the shaking, and the aggregate is screened for a second time. Then the support plate 310 is flipped to the bottom of the arc shell 320, so that the aggregate that fails to pass through the adjacent slots 332 is moved back to the support plate 310, and the lifting angle of one end of the support plate 310 is adjusted, and the aggregate that fails to pass through the slots 332 is screened again in coordination with the water flow, and then the support plate 310 is flipped to the top of the arc shell 320, so that the position of the aggregate that has been screened again falls on the arc plate 330, so that it passes through the adjacent slots 332, so that the aggregate can be screened multiple times, thereby improving the screening effect of the aggregate and reducing the occurrence of material jamming. The aggregate is also cleaned to wash away the mud in the aggregate.To reduce the adhesion of aggregates, the water pump is an existing technology and will not be described in detail here.

[0034] Embodiment 1

[0035] like Figure 1-Figure 5 As shown, in this embodiment, baffles 321 are fixedly sleeved at both ends of the inner arc surface of the arc shell 320, and slewing bearings 340 are provided at both ends of the support plate 310. Any slewing bearing 340 includes an inner ring and an outer ring, wherein the outer ring of a slewing bearing 340 is fixedly connected to two guide rods 341, and one end of the two guide rods 341 is rotatably connected to two opposite inner side walls of the U-shaped frame 100, and the top surface of the U-shaped frame 100 is fixedly connected to a support plate, and the top surface of the support plate is fixedly connected to a drive box 36 0, a plurality of electric hoists are arranged inside the driving box 360, and the plurality of electric hoists are all equipped with slings 361, one end of the plurality of slings 361 is fixedly connected to the outer side wall of the outer ring of another slewing bearing 340, the bottom surfaces of both ends of the support plate 310 are fixedly connected to connecting plates 312, and one end of the two connecting plates 312 is respectively fixedly connected to the inner side walls of the inner rings of the two slewing bearings 340, the support plate 310, the arc shell 320 and the arc plate 330 are all located inside the two slewing bearings 340.

[0036] In this embodiment, by using two baffles 321, when the aggregate is supported by the arc shell 320 for cleaning, the aggregate is not easy to escape from the inside of the arc shell 320 due to the shaking of the arc shell 320. By using two slewing bearings 340 to support the support plate 310, the arc plate 330 and the arc shell 320, the support plate 310, the arc shell 320 and the arc plate 330 can be turned over by relying on the two slewing bearings 340, and the relative position relationship between the support plate 310 and the arc shell 320 is changed, so that the support plate 310 is at the bottom or the arc shell 320 is at the bottom. By starting multiple electric hoists and using the slings 361 to pull up one end of the support plate 310, the support plate 310 can be rotated by relying on the two guide rods 341 on a slewing bearing 340 as the axis, and the support plate 310 changes from a flat state to an inclined state. The inclination angle of the support plate 310 can be adjusted by controlling the height of one end of the support plate 310 pulled up by the slings 361.

[0037] like Figure 1-Figure 7 As shown, in this embodiment, the cleaning mechanism 400 includes:

[0038] A top plate 410 and a plurality of levers 420, the top plate 410 is arc-shaped, and arc-shaped slots 411 are provided at both ends of the top plate 410, a snap ring 342 is fixedly connected to one side of the inner ring of the two slewing bearings 340, and the two snap rings 342 are respectively rotatably engaged in the two arc-shaped slots 411, one end of the plurality of levers 420 is fixedly connected to the inner arc surface of the top plate 410, two opposite inner side walls of the U-shaped frame 100 are fixedly connected to the rails 430, and a movable plate 440 is arranged between the two rails 430, the two ends of the movable plate 440 are respectively slidably engaged in the two rails 430, the bottom center of the movable plate 440 is rotatably connected to two support arms 441, and one end of the two support arms 441 is engaged with the outer arc surface of the top plate 410 The center is rotated and connected, a gear ring 350 is arranged between the two slewing bearings 340, and the support plate 310, the arc shell 320 and the arc plate 330 are all located inside the gear ring 350, and the plate body 351 is fixedly connected to the opposite sides of the gear ring 350, and a plurality of connecting rods 352 are fixedly connected between the top surface of any plate body 351 and the bottom surface of the support plate 310, a power box 450 is fixedly connected to a long side edge of the bottom surface of the top plate 410, and a power motor is arranged inside the power box 450, a U-shaped plate is fixedly connected to a long side edge of the bottom surface of the top plate 410, and a gear 451 is rotatably connected between the two arms of the U-shaped plate, the motor shaft of the power motor is fixedly connected to the axle of the gear 451, and the gear 451 is meshed with the gear ring 350.

[0039] In a specific implementation, when the support plate 310 is in a horizontal or tilted position, the top plate 410 always relies on the two rails 430, the movable plate 440 and the two arms 441 to remain at the upper part of the two slewing bearings 340. A lever 420 passes through any of the slots 332. By starting the power motor, the gear 451 can drive the gear ring 350 to rotate, so that the gear ring 350 drives the support plate 310, the arc shell 320 and the arc plate 330 to flip, so that the support plate 310 is at the bottom or the arc plate 330 is at the bottom. , and the power motor can be started to drive the support plate 310, the arc shell 320 and the arc plate 330 to swing back and forth through the gear 451 and the gear ring 350, and when the slot 332 is stuck, the support plate 310 can be turned over to make the arc plate 330 rotate synchronously with the support plate 310, so that the aggregate stuck inside the slot 332 on the arc plate 330 can be pushed out by the adjacent lever 420, and the two arms 441 are connected to the top plate 410 by bolts, and the top plate 410 needs to be cleaned. The bolts at the connection between the two support arms 441 and the top plate 410 can be removed to allow the top plate 410 to rotate naturally to the lower half of the two slewing bearings 340, and the arc shell 320 and the arc plate 330 can rotate naturally to the bottom of the support plate 310 due to their own weight, and then the water flow from the positioning plate 311 or the water gun can be used to spray water on the top plate 410 to retain water on the top plate 410. At the same time, the power motor is started to drive the gear 451 to roll back and forth on the gear ring 350, and the weight of the top plate 410 It is lighter than the arc shell 320 and the arc plate 330, so that when the gear 451 rolls back and forth on the gear ring 350, it can drive the top plate 410 to rock back and forth under the arc plate 330 and the arc shell 320, so that the retained water in the top plate 410 rocks inside the top plate 410, and the top plate 410 is auxiliary cleaned. After cleaning, multiple electric hoists can be started to drive another slewing bearing 340 to lift up, so that the support plate 310 and the top plate 410 are tilted to dump the remaining water, thereby facilitating the cleaning of the top plate 410.

[0040] Embodiment 2

[0041] On the basis of the first embodiment, the rectangular hole is provided so that the water storage tank 200 can receive the water flowing out of the positioning plate 311, so as to facilitate secondary utilization and reduce the waste of water resources.

[0042] like Figure 1-Figure 2 As shown, in this embodiment, a rectangular hole is opened on the inner bottom surface of the U-shaped frame 100, and the rectangular hole is located at the other end of the support plate 310, the interior of the water tank 200 is connected to the interior of the rectangular hole, a box-shaped filter 110 is movably sleeved inside the rectangular hole, and a bracket 120 is fixedly connected to the inner bottom surface of the U-shaped frame 100, and the bracket 120 is located at one end of the support plate 310.

[0043] During specific implementation, the water flowing through the support plate 310 can naturally flow into the rectangular hole and be received by the water tank 200, and then the water flow inside the water tank 200 can be filtered and pumped out by a water pump and then flow out from the positioning plate 311 again, and by setting a box-shaped filter screen 110 at the rectangular hole, some aggregates that fall from the support plate 310 can be received by the box-shaped filter screen 110, and the fallen aggregates can be put back into the support plate 310 for screening. When the support plate 310 is placed flat, the outer ring of the other slewing bearing 340 can be supported by the bracket 120, which is convenient for users to use.

[0044] like Figure 1 As shown, in this embodiment, two opposite sides of the U-shaped frame 100 are provided with communication openings 101 , and the two communication openings 101 are both located below any slewing bearing 340 .

[0045] In a specific implementation, by setting up multiple belt conveyors between the connecting ports 101, when aggregates fall from the slots 332, aggregates falling from the slots 332 of different specifications can fall onto different conveyor belts, and then the belt conveyors can be used to transport aggregates of different specifications to different places for use. Belt conveyors are existing technologies and will not be described in detail here.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An aggregate mixing and screening device for concrete production, characterized in that: include: U-shaped frame (100); A water storage tank (200), the top end of which is fixedly connected to the bottom surface of the U-shaped frame (100); The screening mechanism (300) is located between the two arms of the U-shaped frame (100), the screening mechanism (300) comprises a support plate (310), and an arc-shaped shell (320) is arranged above the support plate (310), one end of the arc-shaped shell (320) is fixedly connected to an arc-shaped plate (330), the support plate (310) is fixedly connected to the bottom surface of the arc-shaped shell (320) between the two long sides, and the support plate (310) is fixedly connected to the bottom surface of the arc-shaped plate (330) between the two long sides, and the length of the support plate (310) is equal to the length of the arc-shaped shell The length of the support plate (310) is the sum of the length of the support plate (320) and the length of the arc plate (330), the inner arc surface of the arc plate (330) is fixedly sleeved with a plurality of partitions (331), and the inner arc surface of the arc plate (330) is provided with a plurality of slots (332) located between two adjacent partitions (331), one end of the support plate (310) is located at the arc shell (320), and one end of the top surface of the support plate (310) is fixedly connected with a positioning plate (311), and a plurality of pipe connecting openings are provided on one side of the positioning plate (311), and a water pipe is fixedly sleeved inside any pipe connecting opening; The cleaning mechanism (400) is located between the two arms of the U-shaped frame (100).

2. The aggregate mixing and screening device for concrete production according to claim 1, characterized in that: Both ends of the support plate (310) are provided with slewing bearings (340), and each slewing bearing (340) includes an inner ring and an outer ring, wherein the outer ring of one slewing bearing (340) is fixedly connected to two guide rods (341), and one end of the two guide rods (341) is rotatably connected to two opposite inner side walls of the U-shaped frame (100), and a support plate is fixedly connected to the top surface of the U-shaped frame (100), and a driving box (360) is fixedly connected to the top surface of the support plate, and a plurality of electric hoists are arranged inside the driving box (360). The electric hoists are equipped with a sling (361), one end of each of the slings (361) is fixedly connected to the outer side wall of the outer ring of another slewing bearing (340), the bottom surfaces of both ends of the support plate (310) are fixedly connected to connecting plates (312), and one end of the two connecting plates (312) is respectively fixedly connected to the inner side walls of the inner rings of the two slewing bearings (340), and the support plate (310), the arc shell (320) and the arc plate (330) are all located inside the two slewing bearings (340).

3. The aggregate mixing and screening device for concrete production according to claim 2, characterized in that: The cleaning mechanism (400) comprises: The top plate (410) is arc-shaped, and arc-shaped grooves (411) are provided at both ends of the top plate (410). A clamping ring (342) is fixedly connected to one side of the inner ring of the two slewing bearings (340), and the two clamping rings (342) are respectively rotatably clamped in the two arc-shaped grooves (411); One end of each of the plurality of levers (420) is fixedly connected to the inner arc surface of the top plate (410).

4. The aggregate mixing and screening device for concrete production according to claim 2, characterized in that: Baffles (321) are fixedly sleeved at both ends of the inner arc surface of the arc-shaped shell (320).

5. The aggregate mixing and screening device for concrete production according to claim 3, characterized in that: The two opposite inner side walls of the U-shaped frame (100) are fixedly connected with rails (430), and a movable plate (440) is arranged between the two rails (430), and the two ends of the movable plate (440) are respectively slidably connected to the inside of the two rails (430), and the bottom center of the movable plate (440) is rotatably connected to two supporting arms (441), and one end of the two supporting arms (441) is rotatably connected to the center of the outer arc surface of the top plate (410).

6. The aggregate mixing and screening device for concrete production according to claim 5, characterized in that: A gear ring (350) is arranged between the two slewing bearings (340), and the support plate (310), the arc shell (320) and the arc plate (330) are all located inside the gear ring (350), the gear ring (350) is fixedly connected with a plate body (351) on opposite sides, and a plurality of connecting rods (352) are fixedly connected between the top surface of any plate body (351) and the bottom surface of the support plate (310), a power box (450) is fixedly connected to a long side edge of the bottom surface of the top plate (410), and a power motor is arranged inside the power box (450), a U-shaped plate is fixedly connected to a long side edge of the bottom surface of the top plate (410), and a gear (451) is rotatably connected between the two arms of the U-shaped plate, the motor shaft of the power motor is fixedly connected to the wheel shaft of the gear (451), and the gear (451) is meshed with the gear ring (350).

7. The aggregate mixing and screening device for concrete production according to claim 5, characterized in that: The U-shaped frame (100) is provided with communication openings (101) on opposite sides, and the two communication openings (101) are both located below any slewing bearing (340).

8. The aggregate mixing and screening device for concrete production according to claim 7, characterized in that: A rectangular hole is provided on the inner bottom surface of the U-shaped frame (100), and the rectangular hole is located at the other end of the support plate (310), and the interior of the water storage tank (200) is connected to the interior of the rectangular hole.

9. The aggregate mixing and screening device for concrete production according to claim 8, characterized in that: A box-shaped filter screen (110) is movably sleeved inside the rectangular hole.

10. The aggregate mixing and screening device for concrete production according to claim 9, characterized in that: A bracket (120) is fixedly connected to the inner bottom surface of the U-shaped frame (100), and the bracket (120) is located at one end of the support plate (310).

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