A concrete preparation and processing equipment and its processing technology

Abstract

The invention relates to a concrete preparation device and a processing technology thereof. The production line comprises a frame, a screening barrel is arranged on the frame, a rotary screening device is arranged below the screening barrel, the rotary screening device comprises a plurality of screening components arranged in an array along a circumferential direction, a rotating mechanism for driving the screening component to make a circular motion and pass through the bottom of the screening barrel, and a flipping mechanism for driving the screening component to flip. When the screening component passes through the bottom of the screening barrel, the material in the screening barrel is screened. The flipping mechanism drives the screening component that has completed one screening to flip so that large particles left on the screening component fall off. The frame is also provided with a material shaking mechanism, which causes the large particles remaining on the screening component to fall off by knocking the screening component. The invention solves the problems of low screening efficiency, poor screening effect, low equipment automation and labor consumption in the prior art when screening concrete raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete production equipment, and in particular to concrete preparation and processing equipment and a processing technology thereof. Background Art

[0002] Concrete refers to a general term for engineering composite materials in which aggregates are bonded into a whole by cementitious materials. Concrete usually refers to cement concrete obtained by mixing cement as cementitious material, sand and stone as aggregates and water in a certain proportion. Concrete is mixed from a variety of different raw materials, including crushed stone, fine stone, yellow sand and other sand and gravel of various particle sizes. When transporting various raw materials to the concrete production site, they need to be stacked in separate warehouses and then transported according to actual usage.

[0003] When mixing raw materials, when the requirements for concrete are relatively high, the purchased raw materials often need to be screened again to remove some large particles to ensure the quality requirements of the prepared concrete. The existing raw material screening equipment generally has a low degree of automation, and the screen is easily blocked during the screening process. Summary of the invention

[0004] One of the purposes of the present invention is to address the deficiencies of the prior art. By arranging a rotating rotary screening device under the screening barrel, multiple screening components pass through the bottom of the screening barrel in turn, thereby realizing continuous screening, and coarse particles are cleaned by cooperating with the flipping mechanism and shaking mechanism at the rear, thereby solving the problems of low screening efficiency, poor screening effect, low degree of equipment automation, and manpower consumption when screening concrete raw materials in the prior art.

[0005] In view of the above technical problems, the technical solutions adopted are as follows:

[0006] A concrete preparation and processing equipment comprises a frame, a screening barrel is arranged on the frame, a rotary screening device is arranged below the screening barrel, the rotary screening device comprises a plurality of screening components arranged in an array along a circumferential direction, a rotating mechanism for driving the screening components to make a circular motion through the bottom of the screening barrel, and a flipping mechanism for driving the screening components to flip, the screening components screen the materials in the screening barrel when passing through the bottom of the screening barrel, the flipping mechanism drives the screening components that have completed one screening to flip so that large particles left on the screening components fall off; the frame is also provided with a material shaking mechanism, and the material shaking mechanism causes the large particles remaining on the screening components to fall off by knocking on the screening components.

[0007] Preferably, the screening assembly comprises a rotating shaft and a screening plate fixed to an end of the rotating shaft, a plurality of screening holes are formed on the screening plate, and baffles are provided on the inner and outer sides of the screening plate.

[0008] Preferably, the rotating mechanism includes a rotating seat, a main shaft rotatably arranged on the rotating seat, and a rotating member for driving the main shaft to rotate. The upper end of the main shaft is provided with a plurality of mounting sleeves arranged in an array along its circumferential direction, and the rotating shaft rotates in cooperation with the mounting sleeves.

[0009] Preferably, the flipping mechanism includes a first rack arranged below the rotating shaft and fixed on the rotating seat, and a second rack arranged above the rotating shaft and fixed on the frame. The first rack and the second rack are arranged in sequence front and back along the rotation direction of the main shaft, and a gear coaxial with the rotating shaft is correspondingly arranged on the rotating shaft. The first rack cooperates with the gear to drive the screening assembly to flip from a lying state to an upright state, and the second rack cooperates with the gear to drive the screening assembly to reverse and reset.

[0010] As a preferred embodiment, the material shaking mechanism includes a mounting frame, a knocking assembly rotatably arranged on the mounting frame, and an elastic member connecting the mounting frame and the knocking assembly, the knocking assembly is provided with a knocking block and a toggle block, and a toggle rod is correspondingly provided on the baffle plate on the outer side of the screening plate, the screening assembly rotates through the material shaking mechanism in an upright state, the toggle rod contacts the toggle block and drives the knocking assembly to rotate and stretch the elastic member, the knocking assembly is reset after the toggle rod passes over the toggle block, and the knocking block hits the screening plate;

[0011] It should be noted here that the rotating shaft and the mounting sleeve are closely matched and can rotate under the action of the gear and the rack, while the knocking action of the knocking block cannot cause the screening plate to rotate.

[0012] As a preference, at least two material shaking mechanisms are provided along the rotation direction of the main shaft.

[0013] As a preference, the screening barrel is also provided with a scraping mechanism for stirring the material in the screening barrel, the scraping mechanism comprising a turntable coaxially arranged with the main shaft and rotating when driven by the main shaft, a sliding seat fixed on the screening barrel, a sliding rod slidably arranged on the sliding seat, a scraping piece fixed at one end of the sliding rod and with the end extending into the screening barrel, and a connecting rod with one end rotatably connected to the other end of the sliding rod and the other end of which is eccentrically and rotatably arranged on the turntable.

[0014] As a preference, the screening barrel is arranged in a fan shape, and when the screening plate passes through the screening barrel, the distance between the bottom of the side of the screening barrel and the upper surface of the screening plate is 5 cm to 8 cm.

[0015] Preferably, a feeding belt for automatically adding screened material into the screening barrel is provided on one side of the feeding port of the screening barrel; a first material receiving box for receiving screened fine material is provided below the screening barrel, and a second material receiving box for receiving screened coarse material is provided below the first rack and the shaking mechanism.

[0016] Preferably, the bottom surface of the first material receiving box is arranged as an inclined surface, and the material falling on the bottom surface slides into the feeding box arranged on one side of the first material receiving box, and a discharge roller is arranged at the discharge port at the lower end of the feeding box, and the two ends of the discharge roller can be rotatably arranged on both sides of the feeding box, and a discharge groove is opened on the discharge roller.

[0017] As another preferred embodiment, a mixer is arranged below the feeding box, and a transmission assembly is arranged between the mixer and the discharging roller, and the transmission assembly includes a sliding sleeve rotatably arranged on the feeding box, a transmission rod slidably matched with a guide hole opened on the sliding sleeve, and a cam coaxially arranged with the rotating shaft of the mixer and rotated by the stirring shaft, a limit ring is arranged on the transmission rod, a spring is arranged between the limit ring and the sliding sleeve, one end of the transmission rod is eccentrically and rotatably arranged on the side of the discharging roller, and the other end thereof cooperates with the cam, and the cam cooperates with the spring to drive the transmission rod to slide back and forth along the sliding sleeve to make the discharging roller swing left and right.

[0018] As another preferred embodiment, an output track is further provided under the mixer, and a material receiving trolley is provided on the output track. After the concrete in the mixer is mixed, the discharge valve at the bottom of the mixer is opened, and the material receiving trolley moves to the bottom of the discharge valve to receive the material; a plurality of material receiving trolleys are provided and distributed along the output track under the mixer. When discharging the material, the trolley moves outward along the output track, receives the material in sequence, and then outputs the material.

[0019] Another object of the present invention is to provide a concrete preparation and processing technology, which greatly improves the efficiency of the concrete ingredient screening process by orderly combining the loading process, screening process, turning process, shaking process and resetting process to form a rotary production line, and solves the problems of low screening efficiency and low degree of automation in the existing screening process.

[0020] In view of the above technical problems, the technical solutions adopted are as follows:

[0021] A concrete preparation and processing technology comprises the following steps:

[0022] (1) Loading process: the feed belt conveys the material to be screened into the screening barrel;

[0023] (ii) Screening process: the screening assembly rotates to the bottom of the screening barrel, the material-pickup mechanism moves the material to be screened in the screening barrel, and screens the material in cooperation with the screening plate, so that the fine particles fall downward and the coarse particles remain on the screening plate;

[0024] (iii) a material turning process, in which the screening plate that has completed the screening work in step (ii) rotates around the main axis to the material turning station, and at the material turning station, the screen plate rotates around the rotating axis by the rack driving the gear to make the coarse particles remaining on the screen plate fall off;

[0025] (iv) a material shaking process, in which the screening plate that has completed the material turning in step (iii) continues to rotate around the main axis to the material shaking station, where the material shaking mechanism knocks the screening plate to make the coarse particles remaining on the screening plate fall off;

[0026] (V) Resetting process: the screening plate that has completed the shaking of the material in step (IV) continues to rotate around the main axis to the resetting station, and the screening plate is reversed around the rotating axis and reset to a horizontal state by the rack driving the gear at the resetting station. The screening plate that has completed the resetting is rotated again to the screening barrel for the next screening work;

[0027] (vi) a stirring process, wherein the fine particles screened out in step (ii) are evenly scattered into the mixer by the discharging roller under the action of the transmission component for stirring;

[0028] (VII) Discharging process: the concrete mixed in step (VI) flows out through the discharging valve at the bottom of the mixer to the receiving trolley, and is transferred and discharged by the receiving trolley.

[0029] Beneficial effects of the present invention:

[0030] 1. In the present invention, a rotary rotary screening device is arranged below the screening barrel, and a plurality of screening components pass through the bottom of the screening barrel in turn, thereby realizing continuous screening and improving the efficiency and effect of screening, thereby avoiding the problem in the prior art that many holes on a single screen are blocked by large-size materials after being used for a period of time, thereby affecting the screening effect.

[0031] 2. In the present invention, a flipping mechanism is provided to cooperate with the screening assembly, so that the screening assembly that completes a screening work can be flipped under the action of the flipping mechanism, so that the coarse particles left on the screening plate can automatically slide off the screening plate. Compared with the prior art that the coarse particles on the screen need to be manually cleaned after the screen has been used for a period of time, the efficiency is greatly improved.

[0032] 3. In the present invention, a material shaking mechanism is arranged on the path of the screening component rotating around the main axis, so that the material remaining on the screening plate or stuck in the screening holes can be knocked and removed by means of the knocking component in coordination with the rotation of the screening component, thereby ensuring that the screening holes on the screening plate are in an unblocked state and improving the efficiency of subsequent screening.

[0033] 4. In the present invention, a material scraping mechanism is provided at the screening barrel, and the material scraping member of the material scraping mechanism is driven by the rotation of the main shaft to scrape the material in the screening barrel, thereby further improving the screening efficiency, and the structure is simple, the power is shared, and the cost is reduced.

[0034] In summary, the equipment has the advantages of high screening efficiency, high degree of automation, simple structure and low cost, and is particularly suitable for the technical field of raw material screening equipment in the concrete production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0036] Figure 1 This is a schematic diagram of the structure of the concrete preparation production line.

[0037] Figure 2 It is a partial structural schematic diagram of a rotary screening device.

[0038] Figure 3 It is a schematic diagram of the first rack and the gear on the rotating shaft rotating in coordination.

[0039] Figure 4 It is a schematic diagram of the second rack and the gear on the rotating shaft rotating in coordination.

[0040] Figure 5 Schematic diagram of the working state of the shaking mechanism.

[0041] Figure 6 It is a structural diagram of the material removal mechanism.

[0042] Figure 7 It is a top view schematic diagram of the rotary screening device.

[0043] Figure 8 It is a schematic diagram of the structure between the mixer and the feeding box.

[0044] Fig. 9 It is a schematic cross-sectional view of the feeding box and the discharging roller.

[0045] Fig.10 Rear view of the production line for concrete preparation.

[0046] Fig.11 This is the process flow chart for screening ingredients for concrete. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0048] Embodiment 1

[0049] like Figures 1 to 10 As shown, a concrete preparation and processing equipment includes a frame 1, on which a screening barrel 2 is arranged, and a rotary screening device 3 is arranged below the screening barrel 2. The rotary screening device 3 includes a plurality of screening components 31 arranged in an array along a circumferential direction, a rotating mechanism 32 for driving the screening component 31 to make a circular motion through the bottom of the screening barrel 2, and a flipping mechanism 33 for driving the screening component 31 to flip. When the screening component 31 passes through the bottom of the screening barrel 2, the material in the screening barrel 2 is screened, and the flipping mechanism 33 drives the screening component 31 that has completed one screening to flip so that large particles left on the screening component 31 fall off; the frame 1 is also provided with a shaking mechanism 34, and the shaking mechanism 34 causes the large particles remaining on the screening component 31 to fall off by knocking the screening component 31.

[0050] It is worth mentioning that in this embodiment, a rotating rotary screening device 3 is arranged under the screening barrel 2, and multiple screening components 31 pass through the bottom of the screening barrel 2 in turn, thereby realizing continuous screening while improving the efficiency and effect of screening, and avoiding the problem in the prior art that many holes on a single screen are blocked by large-size materials after being used for a period of time, thereby affecting the screening effect.

[0051] Furthermore, if Figure 2 As shown, the screening assembly 31 includes a rotating shaft 311 and a screening plate 312 fixed to the end of the rotating shaft 311 , a plurality of screening holes 313 are formed on the screening plate 312 , and baffles 314 are provided on the inner and outer sides of the screening plate 312 .

[0052] Furthermore, the rotating mechanism 32 includes a rotating seat 321, a main shaft 322 rotatably arranged on the rotating seat 321, and a rotating member 323 for driving the main shaft 322 to rotate. The upper end of the main shaft 322 is provided with a plurality of mounting sleeves 324 in an array along its circumferential direction, and the rotating shaft 311 rotates in cooperation with the mounting sleeves 324.

[0053] Furthermore, the flipping mechanism 33 includes a first rack 331 arranged below the rotating shaft 311 and fixed on the rotating seat 321, and a second rack 332 arranged above the rotating shaft 311 and fixed on the frame 1. The first rack 331 and the second rack 332 are arranged in sequence front and back along the rotation direction of the main shaft 322, and correspondingly, a gear 333 coaxial with the rotating shaft 311 is arranged on the rotating shaft 311. The first rack 331 cooperates with the gear 333 to drive the screening assembly 31 to flip from a lying state to an upright state, and the second rack 332 cooperates with the gear 333 to drive the screening assembly 31 to reverse and reset.

[0054] It should be noted that, by setting up the flipping mechanism 33 to cooperate with the screening component 31, the screening component 31 that completes a screening work can be flipped under the action of the flipping mechanism 33, so that the coarse particles left on the screening plate can automatically slide off the screening plate. Compared with the prior art that the coarse particles on the screen need to be manually cleaned after the screen has been used for a period of time, the efficiency is greatly improved.

[0055] Furthermore, if Figure 5 As shown, the material shaking mechanism 34 includes a mounting frame 341, a knocking assembly 342 rotatably arranged on the mounting frame 341, and an elastic member 343 connecting the mounting frame 341 and the knocking assembly 342, the knocking assembly 342 is provided with a knocking block 344 and a toggle block 345, and a toggle rod 346 is correspondingly provided on the baffle 314 on the outer side of the screening plate 312, the screening assembly 31 is rotated through the material shaking mechanism 34 in an upright state, the toggle rod 346 contacts the toggle block 345 to drive the knocking assembly 342 to rotate and stretch the elastic member 343, the knocking assembly 342 is reset after the toggle rod 346 passes over the toggle block 345, and the knocking block 344 hits the screening plate 312.

[0056] It is worth mentioning that in this embodiment, by arranging a material shaking mechanism 34 on the path of the screening component 31 rotating around the main axis, the knocking component 342 can cooperate with the rotation of the screening component 31 to knock and remove the material remaining on the screening plate or stuck in the screening holes, thereby ensuring that the screening holes on the screening plate are in an unblocked state and improving the efficiency of subsequent screening.

[0057] Furthermore, at least two material shaking mechanisms 34 are provided along the rotation direction of the main shaft 322 .

[0058] Furthermore, the screening barrel 2 is configured to be fan-shaped, and when the screening plate 312 passes through the screening barrel 2, the distance between the bottom of the side of the screening barrel 2 and the upper surface of the screening plate 312 is 5 cm to 8 cm.

[0059] Furthermore, a feeding belt 5 for automatically adding screened material into the screening barrel 2 is provided on one side of the feeding port 21 of the screening barrel 2; a first material receiving box 6 for receiving the screened fine material is provided below the screening barrel 2, and a second material receiving box 7 for receiving the screened coarse material is provided below the first rack 331 and the shaking mechanism 34.

[0060] Furthermore, the bottom surface of the first material receiving box 6 is arranged as an inclined surface, and the material falling on the bottom surface slides into the feeding box 8 arranged on one side of the first material receiving box 6, and a discharge roller 9 is arranged at the discharge port at the lower end of the feeding box 8. The two ends of the discharge roller 9 are rotatably arranged on both sides of the feeding box 8, and a discharge groove 91 is opened on the discharge roller 9.

[0061] Furthermore, a mixer 10 is arranged below the feeding box 8, and a transmission assembly 11 is arranged between the mixer 10 and the discharging roller 9. The transmission assembly 11 includes a sleeve 111 rotatably arranged on the feeding box 8, a transmission rod 112 slidably matched with a guide hole opened on the sleeve 111, and a cam 113 coaxially arranged with the stirring shaft 101 of the mixer 10 and rotated under the drive of the stirring shaft 101. A limit ring 114 is arranged on the transmission rod 112, and a spring 115 is arranged between the limit ring 114 and the sleeve 111. One end of the transmission rod 112 is eccentrically and rotatably arranged on the side of the discharging roller 9, and the other end thereof cooperates with the cam 113. The cam 113 cooperates with the spring 115 to drive the transmission rod 112 to slide back and forth along the sleeve 111 to make the discharging roller 9 swing left and right.

[0062] Furthermore, an output track 100 is provided below the mixer 10, and a material receiving trolley 200 is provided on the output track 100. After the concrete in the mixer 10 is mixed, the discharge valve 102 at the bottom of the mixer is opened, and the material receiving trolley 200 moves to the bottom of the discharge valve 102 to receive the material.

[0063] Embodiment 2

[0064] like Figure 1 and Figure 6As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that: further, the screening barrel 2 is provided with a scraping mechanism 4 for stirring the material in the screening barrel 2, and the scraping mechanism 4 includes a turntable 41 coaxially arranged with the main shaft 322 and rotating under the drive of the main shaft 322, a sliding seat 42 fixed on the screening barrel 2, a sliding rod 43 slidably arranged on the sliding seat 42, a scraping member 44 fixed at one end of the sliding rod 43 and with the end thereof extending into the screening barrel 2, and a connecting rod 45 with one end rotatably connected to the other end of the sliding rod 43 and the other end eccentrically and rotatably arranged on the turntable 41.

[0065] By arranging a scraping mechanism 4 at the screening barrel 2 and driving the scraping member 44 of the scraping mechanism 4 to scrape the material in the screening barrel 2 by the rotation of the main shaft, the screening efficiency is further improved, and the structure is simple, the power is shared, and the cost is reduced.

[0066] Embodiment 3

[0067] like Fig.11 As shown, a concrete preparation process comprises the following steps:

[0068] (i) In the feeding process, the feed belt 5 conveys the material to be screened into the screening barrel 2;

[0069] (ii) Screening process: the screening assembly 31 rotates to the bottom of the screening barrel 2, the material scraping mechanism 4 moves the material to be screened in the screening barrel 2, and cooperates with the screening plate 312 to screen the material, so that the fine particles fall downward and the coarse particles remain on the screening plate 312;

[0070] (iii) a material turning process, in which the screening plate 312 that has completed the screening work in step (ii) rotates around the main shaft 322 to the material turning station, and at the material turning station, the screening plate 312 rotates around the rotating shaft 311 by the rack driving the gear to rotate, so that the coarse particles remaining on the screening plate 312 fall off;

[0071] (iv) a material shaking process, in which the screening plate 312 that has completed the material turning in step (iii) continues to rotate around the main shaft 322 to the material shaking station, where the material shaking mechanism 34 knocks the screening plate 312 to make the coarse particles remaining on the screening plate 312 fall off;

[0072] (V) Resetting process: the screening plate 312 that has completed the shaking of the material in step (IV) continues to rotate around the main shaft 322 to the resetting station, and the screening plate 312 is reversed around the rotating shaft 311 and reset to a horizontal state by the rack driving the gear at the resetting station. The screening plate 312 that has completed the resetting is rotated again to the screening barrel 2 for the next screening work;

[0073] (vi) a stirring process, wherein the fine particles screened out in step (ii) are evenly scattered into the mixer 10 through the discharge roller 9 under the action of the transmission component (11) for stirring;

[0074] (VII) Discharging process: the concrete mixed in step (VI) flows out through the discharging valve 102 at the bottom of the mixer 10 to the material receiving trolley 200, and is transferred and discharged by the material receiving trolley 200.

[0075] The working process is as follows:

[0076] The feed belt 5 conveys the material to be screened into the screening barrel 2, the rotating member 323 drives the main shaft 322 to rotate, and the main shaft 322 drives a plurality of screening components 31 to rotate. When the screening components 31 pass through the bottom of the screening barrel 2, the material in the screening barrel 2 is screened, and the screened fine material falls into the first receiving box 6 below. In this process, the turntable 41 rotates and drives the sliding rod 43 to slide back and forth along the sliding seat 42 through the connecting rod 45, and drives the scraping member 44 to move back and forth to scrape the material in the screening barrel 2;

[0077] The screening assembly 31 that has completed the screening work continues to rotate around the main shaft 322, and the coarse particles screened out remain on the screening plate 312. When it rotates to the first rack 331, the first rack 331 cooperates with the gear 333 on the rotating shaft 311 to drive the gear 333 connected to the rotating shaft 311 to rotate, so that the screening plate 312 is turned over to an upright state, and the coarse particles on the screening plate 312 fall into the second material receiving box 7 below, and the screening assembly 31 continues to rotate around the main shaft 322. , when it rotates to the material shaking mechanism 34, the lever 346 on the screening component 31 moves the moving block 345 of the knocking component 342 to rotate the knocking component 342 to stretch the elastic member 343. At this time, the knocking block 344 does not contact the screening plate 312. When the lever 346 passes over the moving block 345, the knocking component 342 is reset under the action of the elastic force, and the knocking block 344 knocks on the screening plate 312, so that the material stuck at the screening hole 313 on the screening plate 312 falls off;

[0078] The screening assembly 31 continues to rotate around the main shaft 322. When it rotates to the second rack 332, the second rack 332 cooperates with the gear 333 on the rotating shaft 311 to drive the gear 333 to connect the rotating shaft 311 to rotate in the opposite direction to reset the screening plate 312 to a horizontal state. The reset screening assembly 31 continues to rotate around the main shaft 322 and passes through the bottom of the screening barrel 2, and the cycle continues.

[0079] The fine particles sieved into the first receiving box 6 slide into the feeding box 8. The mixer 10 rotates and stirs, and the cam 113 drives the transmission rod 112 to slide along the sleeve 111, thereby driving the discharge roller 9 to rotate. During the rotation of the discharge roller 9, the material in the feeding box 8 is evenly scattered into the mixer 10 through the discharge trough 91.

[0080] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0081] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0082] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical prompts of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A concrete preparation and processing device, comprising a frame (1), characterized in that: The frame (1) is provided with a screening barrel (2), and a rotary screening device (3) is provided below the screening barrel (2). The rotary screening device (3) comprises a plurality of screening components (31) arranged in an array along a circumferential direction, a rotating mechanism (32) for driving the screening components (31) to make a circular motion and pass through the bottom of the screening barrel (2), and a flipping mechanism (33) for driving the screening components (31) to flip. When the screening components (31) pass through the bottom of the screening barrel (2), the materials in the screening barrel (2) are screened. The flipping mechanism (33) drives the screening components (31) that have completed one screening to flip so that the large particles left on the screening components (31) fall off. The frame (1) is also provided with a material shaking mechanism (34), and the material shaking mechanism (34) causes the large particles left on the screening components (31) to fall off by knocking the screening components (31). The screening assembly (31) comprises a rotating shaft (311) and a screening plate (312) fixed to the end of the rotating shaft (311); a plurality of screening holes (313) are provided on the screening plate (312); baffles (314) are provided on the inner side and the outer side of the screening plate (312); The rotating mechanism (32) comprises a rotating seat (321), a main shaft (322) rotatably arranged on the rotating seat (321), and a rotating member (323) used to drive the main shaft (322) to rotate; a plurality of mounting sleeves (324) are arranged in an array along the circumferential direction of the upper end of the main shaft (322); the rotating shaft (311) and the mounting sleeves (324) are rotatably matched; The flipping mechanism (33) comprises a first rack (331) arranged below the rotating shaft (311) and fixedly arranged on the rotating seat (321), and a second rack (332) arranged above the rotating shaft (311) and fixedly arranged on the frame (1); the first rack (331) and the second rack (332) are arranged in sequence front and back along the rotating direction of the main shaft (322); a gear (333) coaxial with the rotating shaft (311) is correspondingly arranged on the rotating shaft (311); the first rack (331) cooperates with the gear (333) to drive the screening assembly (31) to flip from a lying state to an upright state; and the second rack (332) cooperates with the gear (333) to drive the screening assembly (31) to reverse and reset; The material shaking mechanism (34) comprises a mounting frame (341), a knocking assembly (342) rotatably arranged on the mounting frame (341), and an elastic member (343) connecting the mounting frame (341) and the knocking assembly (342); a knocking block (344) and a toggle block (345) are arranged on the knocking assembly (342); a toggle rod (346) is correspondingly arranged on the baffle plate (314) on the outer side of the screening plate (312); the screening assembly (31) rotates through the material shaking mechanism (34) in an upright state; the toggle rod (346) contacts the toggle block (345) and drives the knocking assembly (342) to rotate and stretch the elastic member (343); after the toggle rod (346) passes over the toggle block (345), the knocking assembly (342) is reset, and the knocking block (344) hits the screening plate (312).

2. A concrete preparation and processing equipment according to claim 1, characterized in that: The screening barrel (2) is also provided with a scraping mechanism (4) for stirring the material in the screening barrel (2), the scraping mechanism (4) comprising a turntable (41) coaxially arranged with the main shaft (322) and rotating under the drive of the main shaft (322), a sliding seat (42) fixed on the screening barrel (2), a sliding rod (43) slidably arranged on the sliding seat (42), a scraping member (44) fixed at one end of the sliding rod (43) and the end of which extends into the screening barrel (2), and a connecting rod (45) one end of which is rotatably connected to the other end of the sliding rod (43) and the other end of which is eccentrically and rotatably arranged on the turntable (41).

3. The concrete preparation and processing equipment according to claim 1, characterized in that: A feeding belt (5) for automatically adding screened material into the screening barrel (2) is provided on one side of the feeding port (21) of the screening barrel (2); a first material receiving box (6) for receiving screened fine material is provided below the screening barrel (2); and a second material receiving box (7) for receiving screened coarse material is provided below the first rack (331) and the material shaking mechanism (34).

4. A concrete preparation and processing equipment according to claim 3, characterized in that: The bottom surface of the first material receiving box (6) is arranged as an inclined surface, and the material falling on the bottom surface slides into the feeding box (8) arranged on one side of the first material receiving box (6). A discharge roller (9) is arranged at the discharge port at the lower end of the feeding box (8), and the two ends of the discharge roller (9) are rotatably arranged on both sides of the feeding box (8), and a discharge groove (91) is opened on the discharge roller (9).

5. A concrete preparation and processing equipment according to claim 4, characterized in that: A mixer (10) is arranged below the feeding box (8), and a transmission assembly (11) is arranged between the mixer (10) and the discharging roller (9), wherein the transmission assembly (11) comprises a sliding sleeve (111) rotatably arranged on the feeding box (8), a transmission rod (112) slidably engaged with a guide hole provided on the sliding sleeve (111), and a cam (113) coaxially arranged with a stirring shaft (101) of the mixer (10) and rotating under the drive of the stirring shaft (101). ), a limit ring (114) is arranged on the transmission rod (112), a spring (115) is arranged between the limit ring (114) and the sliding sleeve (111), one end of the transmission rod (112) is eccentrically and rotatably arranged on the side of the discharge roller (9), and the other end thereof cooperates with a cam (113), and the cam (113) cooperates with the spring (115) to drive the transmission rod (112) to slide forward and backward along the sliding sleeve (111) so that the discharge roller (9) swings left and right.

6. The concrete preparation and processing technology of the concrete preparation and processing equipment according to claim 5, characterized in that: The following steps are involved: (i) a feeding process, wherein a feeding belt (5) conveys the material to be screened into a screening barrel (2); (ii) screening process, the screening component (31) rotates to the bottom of the screening barrel (2), the material scraping mechanism (4) moves the material to be screened in the screening barrel (2), and cooperates with the screening plate (312) to screen the material, so that the fine particles fall downward and the coarse particles remain on the screening plate (312); (iii) a material turning process, wherein the screening plate (312) that has completed the screening work in step (ii) rotates around the main shaft (322) to a material turning station, and at the material turning station, the screening plate (312) rotates around the rotating shaft (311) by means of a rack driving a gear to rotate, so that the coarse particles remaining on the screening plate (312) fall off; (iv) a material shaking process, wherein the screening plate (312) that has completed the material turning in step (iii) continues to rotate around the main shaft (322) to a material shaking station, and at the material shaking station, the material shaking mechanism (34) knocks the screening plate (312) to cause the coarse particles remaining on the screening plate (312) to fall off; (V) a resetting process, wherein the screening plate (312) that has completed the material shaking in step (IV) continues to rotate around the main shaft (322) to a resetting station, and at the resetting station, the screening plate (312) is reversed around the rotating shaft (311) and reset to a horizontal state by means of a rack driving a gear to rotate, and the screening plate (312) that has completed the resetting is rotated again to the screening barrel (2) to perform the next screening operation; (vi) a stirring step, wherein the fine particles screened out in step (ii) are evenly scattered into a stirrer (10) through a discharging roller (9) under the action of a transmission component (11) for stirring; (VII) Discharging process: the concrete mixed in step (VI) flows out through the discharging valve (102) at the bottom of the mixer (10) to the material receiving trolley (200), and is transferred and discharged by the material receiving trolley (200).

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