A concrete processing device and method for engineering construction

Abstract

The application discloses a kind of concrete processing equipment and processing method of engineering construction, including the machine body of cylindrical structure, the main shaft of being rotated and being arranged in the middle part of machine body by first motor drive, a plurality of sieving components are connected with equal interval on main shaft, hopper is arranged at the top of machine body, the outlet end of hopper bottom extends to the inside of machine body and is arranged with control valve thereon, when sieving component moves to below this outlet end, control valve controls discharging;Sieving component includes connecting frame, connecting rod, support plate, first sieve plate and second sieve plate, one end of connecting frame is fixed on main shaft, connecting rod is movably installed on the other end of connecting frame, support plate is arranged at the top end of connecting rod, the present application is processed by the circulation of multiple sieve plates and angle adjustment, material experiences "carrying-diffusion-gathering-cleaning" multi-stage processing in screening process, significantly improve screening efficiency and thoroughness.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete processing, and particularly relates to a concrete processing device and method for engineering construction. BACKGROUND

[0002] The screening step in the concrete processing device is a key step for ensuring the quality of aggregate (sand, stone, etc.), and directly affects the strength, workability and durability of the concrete.

[0003] The traditional screening technology has the following problems: the vibration screen or the drum screen relies on a single mechanical movement, and has problems such as unstable screening precision; and the effective screening area is reduced due to the blocking of the screen caused by the moisture of the aggregate, and frequent shutdown and cleaning are required. SUMMARY

[0004] The present application aims to provide a concrete processing device and method for engineering construction to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a concrete processing device for engineering construction, comprising a cylindrical machine body, a main shaft driven by a first motor is rotatably arranged in the middle of the machine body, a plurality of screening assemblies are connected at equal intervals on the main shaft, a hopper is arranged at the top of the machine body, a discharge end of the bottom of the hopper extends through to the inside of the machine body and a control valve is arranged thereon, and the control valve controls the discharging when the screening assembly moves to below the discharge end.

[0006] The screening assembly comprises a connecting frame, a connecting rod, a support plate, a first sieve plate and a second sieve plate, one end of the connecting frame is fixed on the main shaft, the connecting rod is movably arranged at the other end of the connecting frame, the support plate is arranged at the top end of the connecting rod, the left and right ends of the support plate are both provided with a baffle, a first rotary drum and a second rotary drum are symmetrically arranged between the two baffles, the first sieve plate and the second sieve plate are respectively arranged on the first rotary drum and the second rotary drum, a second motor is arranged on one side of the baffle, the second motor is in transmission connection with the first rotary drum and the second rotary drum to drive the first rotary drum and the second rotary drum to synchronously rotate in the same direction, and the first rotary drum and the second rotary drum can rotate at least 180°.

[0007] An arc-shaped groove is formed in the inner wall of the machine body, a plurality of arc-shaped blocks are arranged at the bottom of the groove, a connecting rod is arranged on the connecting rod, a roller moving along the groove is arranged at the other end of the connecting rod, and a first discharge port and a second discharge port are respectively formed in the bottom of the machine body on both sides.

[0008] Further, the bottom of the second discharging port is connected with a grinding assembly, when the screening assembly moves above the second discharging port, the large particle material screened out is poured into the grinding assembly for grinding; the grinding assembly comprises a grinding cylinder, a main body and a plurality of grinding rollers, the grinding cylinder is installed at the bottom of the second discharging port, the main body is assembled in the grinding cylinder, a plurality of grinding openings are provided through the main body, grinding teeth are distributed on the inner wall of the grinding opening, the grinding roller is arranged in the grinding opening, and a power assembly is arranged on the main body to synchronously drive the rotation of each grinding roller.

[0009] Further, the power assembly comprises a third motor and a plurality of drive rings, the drive rings are rotatably assembled at the bottom of the main body, and each drive ring is coaxially arranged with the corresponding grinding opening, a rotating shaft is rotatably arranged at the middle part of the main body, the grinding openings are distributed around the rotating shaft, the bottom end of the grinding roller extends out of the bottom of the grinding opening and is connected with the drive ring through a plurality of fixing rods, so that the grinding roller is synchronously driven to rotate when the drive ring rotates, the bottom of the rotating shaft extends to the top surface of the main body, and a sweeping rod is arranged at the top end of the rotating shaft, a first gear is arranged at the bottom of the rotating shaft, a second gear is arranged on each drive ring, each second gear is in meshing transmission connection with the first gear, and the third motor is in transmission connection with the rotating shaft.

[0010] Further, the top of the machine body is provided with an air valve, the input end of the air valve is in communication with an external air source, the output end of the air valve is connected with a gas guide pipe, the gas guide pipe extends through into the machine body, the bottom of the gas guide pipe is connected with an annular gas conveying pipe, and a plurality of injection holes are distributed on the gas conveying pipe.

[0011] Further, a fourth motor is connected with the bearing at the end of the connecting frame away from the main shaft, a supporting rod is arranged on the output shaft of the fourth motor, an adjusting hole is formed in the top of the supporting rod, the connecting rod is slidingly arranged in the adjusting hole, a plurality of vertical clamping strips are arranged on the inner wall of the adjusting hole, and a plurality of corresponding clamping grooves are formed in the surface of the connecting rod.

[0012] Further, the second motor is in transmission connection with the rotating shaft of the first rotating cylinder, the rotating shaft of the first rotating cylinder and the rotating shaft of the second rotating cylinder are in meshing transmission connection through gears, the first screen plate and the second screen plate are detachably connected with the first rotating cylinder and the second rotating cylinder respectively, a flow guide strip is arranged between the middle parts of the two side baffles, the flow guide strip is located above the first rotating cylinder and the second rotating cylinder, and the bottom sides of the flow guide strip are slidingly abutted with the first rotating cylinder and the second rotating cylinder respectively.

[0013] The application also provides a processing method applied to the processing equipment, comprising the following steps:

[0014] S1, the raw materials are put into through the top hopper, and a control valve is automatically opened and closed according to the position of the screening assembly; when the main shaft drives the screening assembly to rotate to be directly below the discharge port of the hopper, the control valve is opened, and the raw materials fall onto the first sieve plate and the second sieve plate below;

[0015] S2, while the sieve plate revolves with the main shaft, the second motor drives the sieve plate to rotate for adjustment according to the residual amount of the material in the sieve plate, to form a compound motion track; when the main shaft revolves, the connecting rod moves to the arc block to vibrate, and fine particle materials fall into the bottom of the machine body through the sieve holes, and large particles are retained on the surface of the sieve plate;

[0016] S3, when the large particles that do not pass through the sieve plate rotate to the second discharge port area, the sieve plate is turned over by 180°, and the materials are poured into the grinding assembly below the second discharge port;

[0017] S4, after the large particle materials enter the grinding cylinder, the power assembly drives a plurality of grinding rollers to rotate at a high speed, and a shearing and extruding action is formed with the grinding teeth on the inner wall of the grinding port, so that the large particles are crushed to a target particle size;

[0018] S5, the ground materials can re-enter the screening process through secondary feeding, and the above steps are repeated until the fineness requirement is met.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] 1. The present application realizes periodic horizontal expansion (carrying materials), inclined sliding (accelerating screening), vertical clamping (residual treatment) multi-stage treatment of the sieve plate through the circulation and angle adjustment of multiple sieve plates, and the screening efficiency is significantly improved compared with the traditional single sieve plate.

[0021] 2. The present application has the advantages of efficient screening and grinding integration, and after the screening treatment, the non-standard particles are directionally ground by the grinding assembly, avoiding repeated crushing of all materials, forming a "screening-grinding-re-screening" closed loop, reducing energy consumption, and meeting the stringent requirements of concrete admixtures on fineness.

[0022] 3. The present application effectively peels off the adhered particles by means of sieve plate overturning and air jetting, and cooperates with vibration to assist cleaning, reduces the risk of blockage, and ensures the stability of continuous operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of a concrete processing equipment for engineering construction of the present application;

[0024] Figure 2 It is a schematic view of the internal structure of the processing equipment of the present application;

[0025] Figure 3 It is a front view of the processing equipment of the present application;

[0026] Figure 4 Structure diagram of the screening assembly of the application;

[0027] Figure 5 Structure diagram of the top of the grinding assembly of the application;

[0028] Figure 6 Structure diagram of the bottom of the grinding assembly of the application;

[0029] In the figure, the machine body 1, the first motor 2, the main shaft 3, the screening assembly 4, the hopper 5, the control valve 6, the connecting frame 7, the connecting rod 8, the support plate 9, the first sieve plate 10, the second sieve plate 11, the baffle 12, the first rotating drum 13, the second rotating drum 14, the second motor 15, the chute 16, the arc-shaped block 17, the connecting rod 18, the roller 19, the first discharge port 20, the second discharge port 21, the grinding assembly 22, the grinding drum 23, the main body 24, the grinding roller 25, the grinding port 26, the driving ring 27, the rotating shaft 28, the fixing rod 29, the sweeping rod 30, the first gear 31, the second gear 32, the air valve 33, the air guide pipe 34, the air conveying pipe 35, the injection hole 36, the support rod 37, and the flow guide strip 38. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0031] As shown in Figures 1 to 6 A concrete processing device for engineering construction includes a cylindrical machine body 1, a main shaft 3 driven by a first motor 2 is rotatably arranged in the middle of the machine body 1, a plurality of screening assemblies 4 are connected to the main shaft 3 at equal intervals, a hopper 5 is arranged at the top of the machine body 1, a control valve 6 is arranged at the discharge end of the bottom of the hopper 5 and extends to the inside of the machine body 1, and the control valve 6 controls the discharging when the screening assembly 4 moves to below the discharge end.

[0032] The control valve 6 at the discharge end of the hopper 5 determines whether the screening assembly 4 reaches below the discharge end through a position sensor (such as a mechanical touch or an optical signal). When the sieve plate (the first sieve plate 10 and the second sieve plate 11) rotates to directly below the hopper 5, the valve is opened, and the material is accurately dropped onto the surface of the sieve plate, so that the material is batch-screened through the plurality of screening assemblies 4, and the efficiency can be effectively improved compared with a traditional single sieve plate.

[0033] The screening assembly 4 comprises a connecting frame 7, a connecting rod 8, a supporting plate 9, a first sieve plate 10 and a second sieve plate 11, one end of the connecting frame 7 is fixed to the main shaft 3, the other end of the connecting rod 8 is movably arranged on the connecting frame 7, the supporting plate 9 is arranged on the top end of the connecting rod 8, the left and right ends of the supporting plate 9 are both provided with a baffle 12, the first rotating drum 13 and the second rotating drum 14 are symmetrically arranged between the two side baffles 12, the first sieve plate 10 and the second sieve plate 11 are respectively arranged on the first rotating drum 13 and the second rotating drum 14, and the second motor 15 is arranged on one side of the baffle 12, the second motor 15 is in transmission connection with the first rotating drum 13 and the second rotating drum 14, so as to drive the first rotating drum 13 and the second rotating drum 14 to synchronously rotate in the same direction, and the first rotating drum 13 and the second rotating drum 14 can rotate at least 180°.

[0034] The inner wall of the machine body 1 is provided with a sliding groove 16, the bottom of the sliding groove 16 is provided with a plurality of arc-shaped blocks 17, the connecting rod 8 is provided with a connecting rod 18, the other end of the connecting rod 18 is provided with a roller 19 which moves along the sliding groove 16, and the bottom of the machine body 1 is provided with a first discharging port 20 and a second discharging port 21 respectively, and the arc-shaped blocks 17 are only distributed above the first discharging port 20 and the second discharging port 21.

[0035] The end of the connecting frame 7 away from the main shaft 3 is connected with a fourth motor through a bearing, a supporting rod 37 is arranged on the output shaft of the fourth motor, an adjusting hole is arranged on the top of the supporting rod 37, the connecting rod 8 is slidably arranged in the adjusting hole, and a plurality of vertical clamping strips are arranged on the inner wall of the adjusting hole.

[0036] The working steps of the first sieve plate 10 and the second sieve plate 11 are as follows: when the screening assembly 4 moves to the hopper 5, at this time, the first sieve plate 10 and the second sieve plate 11 are in a horizontal unfolded state, so as to ensure that a sufficient amount of material can be carried, after the hopper 5 is discharged, the material is laid flat on the surface of the sieve plate, and as the main shaft 3 continues to rotate, the arc-shaped blocks 17 in the sliding groove 16 collide with the roller 19, and under the limiting force of the arc-shaped blocks 17, the connecting rod 8 generates high-frequency micro-amplitude vibration, at this time, under the micro-amplitude vibration, fine particles quickly fall through the sieve, and coarse particles are naturally layered to the bottom due to the action of gravity;

[0037] As the screening assembly 4 moves, the rotating drum drives the sieve plate to rotate inward (20° to 45°), as the inclination angle of the sieve plate increases, the material slides inward under the action of centrifugal force and gravity component force, the mixture of coarse particles and un-screened fine powder is exposed to the high-flow area of the sieve plate, preventing accumulation and caking, reducing the "edge dead zone" residue, and at the same time, when the sieve plate is turned from horizontal to inclined, the particles clamped in the sieve hole are thrown out due to the inertial force generated by the sudden change in angle; through periodic rotation of the sieve plate, a "diffusion-concentration" cycle is formed, the horizontal and vertical components of the force acting on the sieve plate are changed, the material residence time is prolonged, and fine particles are ensured to be fully screened.

[0038] When the screening assembly 4 moves to the rear section of the first discharge port 20, the amount of material on the surface of the screen plate gradually decreases as the screening process advances, at which time the first screen plate 10 and the second screen plate 11 are synchronously rotated inward to a vertical state by the rotation of the drum, and the two side screen plates form a clamping structure to exert radial extrusion force on the residual material, forcing the clumped or layered material to flatten and expand, increasing its contact area with the screen plate, and fully utilizing the screening area of the screen plate. Then the fourth motor operates to drive the connecting rod 8 to rotate through the locking structure of the clamping strip and the clamping groove, so that the screen plate on the connecting rod 8 rotates synchronously, generating centrifugal force to cause the material to spread outward, so that the residual fine particle material is fully screened.

[0039] In this embodiment, the bottom of the second discharge port 21 is connected with a grinding assembly 22, when the screening assembly 4 moves above the second discharge port 21, the large particle material screened out is poured into the grinding assembly 22 for grinding; the grinding assembly 22 includes a grinding cylinder 23, a main body 24 and a plurality of grinding rollers 25, the grinding cylinder 23 is installed at the bottom of the second discharge port 21, the main body 24 is assembled in the grinding cylinder 23, a plurality of grinding ports 26 are provided through the main body 24, grinding teeth are distributed on the inner wall of the grinding port 26, the grinding roller 25 is arranged in the grinding port 26, and a power assembly is arranged on the main body 24 to synchronously drive the rotation of each grinding roller 25;

[0040] In this embodiment, the power assembly includes a third motor and a plurality of drive rings 27, the plurality of drive rings 27 are rotatably assembled at the bottom of the main body 24, and each drive ring 27 is coaxially arranged with the corresponding grinding port 26, a rotating shaft 28 is rotatably arranged at the middle of the main body 24, the grinding ports 26 are arranged around the rotating shaft 28, the bottom end of the grinding roller 25 extends out of the bottom of the grinding port 26 and is connected with the drive ring 27 through a plurality of fixing rods 29, so that the grinding roller 25 is synchronously driven to rotate when the drive ring 27 rotates; the bottom of the rotating shaft 28 extends to the top surface of the main body 24, and a sweeping rod 30 is arranged at the top end of the rotating shaft 28, a first gear 31 is arranged at the bottom of the rotating shaft 28, a second gear 32 is arranged on each drive ring 27, each second gear 32 is in meshing transmission connection with the first gear 31, and the third motor is in transmission connection with the rotating shaft 28;

[0041] When the screening assembly 4 moves to the second discharge port 21, the second motor 15 drives the screen plate to rotate downward until it is vertically downward, and the large particle material is poured into the second discharge port 21 by vibration, and finally falls onto the main body 24. The sweep bar 30 at the top of the rotating shaft 28 sweeps the material into the grinding port 26. The surface of the grinding roller 25 is designed with spiral grooves or convex patterns, which form a shearing and extruding complex effect with the diamond-shaped grinding teeth on the inner wall of the grinding port 26. The third motor drives the grinding roller 25 to rotate at high speed in the grinding port 26 through the gear set (first gear 31, second gear 32). The grinding teeth and the grinding roller 25 form a shearing force to crush the large particles to the target fineness. The ground material returns to the screening process through the grinding cylinder 23 until it reaches the qualified fineness.

[0042] In this embodiment, the top of the machine body 1 is provided with an air valve 33. The input end of the air valve 33 is connected with an external air source, and the output end of the air valve 33 is connected with an air guide pipe 34. The air guide pipe 34 extends through the machine body 1 and is connected with an annular air supply pipe 35 at the bottom. The air supply pipe 35 is provided with a plurality of injection holes 36.

[0043] During the screening process, the material is easily formed into dust under the action of centrifugal force. The airflow passes through the injection holes 36 to cover the falling area of the screen plate in a laminar flow mode, forming a downward air pressure barrier to press the floating particles into the falling trajectory, thereby ensuring that the material can accurately fall into the first discharge port 20 or the second discharge port 21, and suppressing dust;

[0044] When the screen plate moves to the second discharge port 21 and is turned to a vertically downward state, the screen plate is just at the same height as the injection holes 36 after being turned downward. The airflow injected from the injection holes 36 can blow the inner surface of the screen plate, thereby removing the adhered fine powder and reducing the blockage of the screen holes.

[0045] In this embodiment, the second motor 15 is in transmission connection with the rotating shaft of the first rotating drum 13, and the rotating shaft of the first rotating drum 13 and the rotating shaft of the second rotating drum 14 are in transmission connection through gear meshing. The first screen plate 10 and the second screen plate 11 are respectively detachably connected to the first rotating drum 13 and the second rotating drum 14. The middle part between the two side baffles 12 is provided with a flow guide strip 38, which is located above the first rotating drum 13 and the second rotating drum 14, and the bottom of the flow guide strip 38 is in sliding abutment with the first rotating drum 13 and the second rotating drum 14.

[0046] The first screen plate 10 and the second screen plate 11 are detachably installed on the first rotating drum 13 and the second rotating drum 14 by buckles or bolts, and can be quickly replaced according to the screening particle size requirement. The setting of the flow guide strip 38 can prevent the material from being stuck in the gap of the rotating drum, and can guide the material flow to the screen plates on both sides to avoid the material from gathering in the middle.

[0047] The embodiment also provides a processing method applied to the above processing device, which comprises the following steps:

[0048] S1, the raw materials are put into the top hopper 5, the control valve 6 is automatically opened and closed according to the position of the screening assembly 4, when the main shaft 3 drives the screening assembly 4 to rotate to the position directly below the discharge port of the hopper 5, the control valve 6 is opened, and the raw materials fall onto the first sieve plate 10 and the second sieve plate 11 below;

[0049] S2, while the sieve plate revolves with the main shaft 3, the second motor 15 drives the sieve plate to rotate for adjustment according to the residual amount of the material in the sieve plate, forming a compound motion track; when the main shaft 3 revolves, the connecting rod 8 moves to the arc block 17 to produce vibration, and the fine particle material falls into the bottom of the machine body 1 through the sieve hole, and the large particles are retained on the surface of the sieve plate;

[0050] S3, when the large particles that do not pass through the sieve plate rotate to the second discharge port 21 area, the sieve plate is turned over by 180°, and the material is poured into the grinding assembly 22 below the second discharge port 21;

[0051] S4, after the large particle material enters the grinding cylinder 23, the power assembly drives multiple grinding rollers 25 to rotate at high speed, and the grinding teeth on the inner wall of the grinding port 26 form shearing and extrusion effect, so that the large particles are crushed to the target particle size;

[0052] S5, the ground material can be re-entered into the screening process by secondary feeding, and the above steps are repeated until the fineness requirement is met.

[0053] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A concrete processing equipment for engineering construction, characterized by: The machine body comprises a cylindrical structure, wherein a main shaft driven by a first motor is rotatably provided in the middle of the machine body, and a plurality of screening assemblies are connected to the main shaft at equal intervals. A hopper is provided on the top of the machine body, and a discharge end at the bottom of the hopper extends through the interior of the machine body and is provided with a control valve. When the screening assembly moves below the discharge end, the control valve controls the discharge of the material. The screening assembly includes a connecting frame, a connecting rod, a support plate, a first screen plate and a second screen plate, one end of the connecting frame is fixed to the main shaft, the connecting rod is movably installed on the other end of the connecting frame, the support plate is arranged at the top of the connecting rod, baffles are provided at both ends of the support plate, the first and second rotating drums are symmetrically arranged between the baffles on both sides, the first screen plate and the second screen plate are respectively installed on the first rotating drum and the second rotating drum, and a second motor is provided on one side of the baffle, the second motor is transmission-connected to the first rotating drum and the second rotating drum to drive the first rotating drum and the second rotating drum to rotate in a synchronous direction, and the first rotating drum and the second rotating drum can rotate at least 180 degrees; A circle of slide grooves is provided on the inner wall of the machine body, and a plurality of arc-shaped blocks are distributed at the bottom of the slide groove. A connecting rod is provided on the connecting rod, and a roller moving along the slide groove is provided at the other end of the connecting rod. A first discharge port and a second discharge port are respectively provided on both sides of the bottom of the machine body.

2. The concrete processing equipment for engineering construction according to claim 1, characterized in that: The bottom of the second discharge port is connected to a grinding assembly. When the screening assembly moves to above the second discharge port, the large particle material under the screen is poured into the grinding assembly for grinding. The grinding assembly includes a grinding cylinder, a main body and several grinding rollers. The grinding cylinder is installed at the bottom of the second discharge port, and the main body is assembled in the grinding cylinder. Several grinding ports are provided through the main body, and grinding teeth are distributed on the inner wall of the grinding port. The grinding roller is arranged in the grinding port, and a power assembly is provided on the main body for synchronously driving each grinding roller to rotate.

3. The concrete processing equipment for engineering construction according to claim 2, characterized in that: The power assembly includes a third motor and several drive rings, several of the drive rings are rotatably assembled at the bottom of the main body, and each drive ring is coaxially arranged with the corresponding grinding port. A rotating shaft is rotatably arranged in the middle of the main body, and the grinding ports are distributed around the rotating shaft. The bottom end of the grinding roller extends out of the bottom of the grinding port and is connected to the drive ring through several fixed rods, so that the grinding roller is synchronously driven to rotate when the drive ring rotates; the bottom of the rotating shaft extends to the top surface of the main body, and a sweeping rod is provided at its top, and a first gear is provided at the bottom of the rotating shaft, and each drive ring is provided with a second gear, and each second gear is meshed with the first gear for transmission connection, and the third motor is transmission connected to the rotating shaft.

4. The concrete processing equipment for engineering construction according to claim 1, characterized in that: An air valve is provided on the top of the body, the input end of the air valve is connected to an external air source, the output end of the air valve is connected to an air guide pipe, the air guide pipe extends through the body, the bottom of the air guide pipe is connected to an annular air supply pipe, and a plurality of spray holes are distributed on the air supply pipe.

5. The concrete processing equipment for engineering construction according to claim 1, characterized in that: The fourth motor is connected to the bearing at one end of the connecting frame away from the main shaft, and a support rod is provided on the output shaft of the fourth motor. An adjustment hole is provided on the top of the support rod, and the connecting rod is slid up and down in the adjustment hole. The inner wall of the adjustment hole is provided with several vertical clips, and the surface of the connecting rod is provided with several corresponding slots.

6. The concrete processing equipment for engineering construction according to claim 1, characterized in that: The second motor is connected to the rotating shaft of the first rotating drum, and the rotating shaft of the first rotating drum and the rotating shaft of the second rotating drum are connected by gear meshing transmission; the first screen plate and the second screen plate can be detachably connected to the first rotating drum and the second rotating drum respectively, and a guide bar is provided between the middle parts of the baffles on both sides, and the guide bar is located above between the first rotating drum and the second rotating drum, and the bottom sides of the guide bar are respectively in sliding contact with the first rotating drum and the second rotating drum.

7. A method for processing concrete processing equipment used in engineering construction according to claim 2, characterized in that: The following steps are involved: S1. Raw materials are fed into the top hopper, and the control valve automatically opens and closes according to the position of the screening assembly. When the main shaft drives the screening assembly to rotate just below the hopper outlet, the control valve opens and the raw materials fall onto the first and second sieve plates below. S2: While the sieve plate revolves with the main shaft, the second motor drives the sieve plate to rotate and adjust according to the residual amount of material in the sieve plate, forming a composite motion trajectory; when the main shaft revolves, the connecting rod moves to the arc block to generate vibration, and fine particles pass through the sieve holes and fall to the bottom of the machine body, while large particles are retained on the surface of the sieve plate; S3: When the large particles that have not passed through the sieve plate rotate with the sieve plate to the second discharge port area, the sieve plate turns 180 degrees and dumps the material into the grinding assembly below the second discharge port; S4. After the large particles enter the grinding cylinder, the power assembly drives multiple grinding rollers to rotate at high speed, forming a shearing and squeezing effect with the grinding teeth on the inner wall of the grinding port, crushing the large particles to the target particle size; S5. The ground material re-enters the screening process through secondary feeding and repeats the above steps until the fineness requirement is met.

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