Fabricated concrete prefabricated part preparation equipment and process

Abstract

The invention relates to the technical field of concrete prefabricated part preparation, and discloses assembly type concrete prefabricated part preparation equipment and technology.The assembly type concrete prefabricated part preparation equipment comprises a vertical shaft planetary mixer, a buffer pipe is fixedly connected to one feeding port, and two partition plates are fixedly connected to the inner wall of the buffer pipe in the axial direction; a rotating plate is jointly and rotationally connected between the two partition plates, a plurality of rotating rings are concentrically arranged on the outer side of the rotating plate at equal intervals, and a plurality of push plates are jointly and fixedly connected between every two adjacent rotating rings and between the rotating plate and the adjacent rotating rings. The push plate drives the raw materials to move in the annular channel and is matched with the fixing rod to scatter the caked raw materials, through vibration and rotation of the sieve plate, the raw materials are evenly spread on the sieve plate and further scattered, then the raw materials are scattered into the stirring cylinder, the raw materials are effectively mixed with slurry, and extrusion damage to aggregate due to high-speed rotation of the stirring arm is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete prefabricated part preparation, and particularly relates to a prefabricated concrete prefabricated part preparation device and process. BACKGROUND

[0002] As the core component of the building industrialization, the concrete prefabricated part has been widely applied to the key fields such as the residence, the bridge and the municipal engineering, and has become the key carrier for promoting the transformation and upgrading of the building industry, with the advantages of the standardized production, the stable quality and the efficient construction. In the complete production process of the concrete prefabricated part, the mixing link directly determines the homogeneity, the workability and the final component strength of the concrete mixture, and is the core process for guaranteeing the quality of the prefabricated part, and the equipment performance and the operation process have a far-reaching influence on the product quality.

[0003] As one of the core equipment for the prefabricated part preparation, the vertical shaft planetary mixer exhibits the significant advantages by virtue of the unique mixing structure: the vertical shaft drives the planetary carrier to drive the mixing blades to complete the compound motion of the revolution and the rotation synchronously, can promote the three-dimensional circulation of the materials in the mixing cylinder, effectively eliminates the mixing dead angle of the traditional mixer, and greatly improves the mixing uniformity and the efficiency, and adapts to the mixing requirements of the different proportion concrete raw materials.

[0004] The current feeding process of the vertical shaft planetary mixer is as follows: first, most of the water and most of the fine aggregate are put in, so that the aggregate fully absorbs water and forms a lubricating layer at the bottom of the mixing cylinder; then, the cement, the fly ash and the remaining water are gradually put in under the condition of continuous mixing until the mixing is completed. However, the process has obvious technical defects: because the aggregate and the water first form the dilution slurry, if the cement or the powder put in subsequently has the caking phenomenon, the caked materials are difficult to be dispersed after absorbing water. In order to disperse the caked materials, the mixing arm needs to be kept at high speed in the initial stage of mixing, and the strong shearing force is relied on to break the caking, but the fine aggregate itself has high brittleness, and the gap between the mixing arm and the mixing disc wall and the bottom plate is very small, and the high-strength extrusion and shearing action easily leads to the crushing of the fine aggregate, damages the original particle structure of the fine aggregate, and then directly affects the thermal insulation performance and the mechanical strength of the concrete, and becomes the key bottleneck for restricting the quality improvement of the prefabricated part. SUMMARY

[0005] In view of the problem that the existing technology causes the damage of the fine aggregate when the mixing arm rotates at high speed to disperse the caked materials, and reduces the performance of the concrete, a prefabricated concrete prefabricated part preparation device is provided.

[0006] The purpose is to set the staged crushing mechanism at the feeding port, disperse the caked materials in advance, make the caked materials more easily fused with the slurry, reduce the rotating speed of the mixing arm, and avoid the crushing of the fine aggregate.

[0007] The technical scheme of the present application is a kind of fabricated concrete prefabricated part preparation equipment, including vertical shaft planetary mixer, two feed ports are provided on the vertical shaft planetary mixer, one of the feed ports is fixedly connected with buffer tube, two partitions are fixedly connected on the inner wall of the buffer tube, a plurality of through holes are arranged on the edge of the partition in ring shape and at equal intervals, the through holes of the two partitions are staggered, and a rotating plate is rotatably connected between the two partitions, a plurality of rotating rings are arranged on the outer side of the rotating plate in concentric and equal intervals, a plurality of push plates are fixedly connected between adjacent two rotating rings and between the rotating plate and adjacent rotating ring, a fixed ring is arranged on the lower side of the rotating ring, the fixed ring is fixedly connected to the top surface of the lower partition, a plurality of fixed rods are arranged between adjacent two fixed rings and between the rotating plate and adjacent fixed ring, the fixed rods are fixedly connected to the top surface of the lower partition, the bottom of the push plate is in sliding contact with the lower partition, and a plurality of grooves are arranged on the push plate and matched with the fixed rods.

[0008] A sieve plate is arranged below the lower partition, the sieve plate has a hopper structure, a rotating shaft is vertically connected to the middle of the sieve plate, the rotating shaft penetrates the two partitions upwardly and is fixedly connected with the rotating plate, a motor is fixedly installed on the outer wall of the buffer tube, and a chain is rotatably connected between the output end of the motor and the lower end of the rotating shaft.

[0009] Further, the plurality of push plates and the plurality of fixed rods are arranged in ring shape and at equal intervals, and the number of push plates is greater than the number of fixed rods.

[0010] Further, the inner wall of the buffer tube is fixedly connected with a protective tube, the lower end of the rotating shaft is rotatably connected with the protective tube, and the chain is arranged in the protective tube.

[0011] Further, the top surface of the upper partition is rotatably connected with a conical guide cover, the upper end of the rotating shaft penetrates the upper partition and is fixedly connected with the guide cover, and a plurality of scraper plates are fixedly connected to the outer wall of the guide cover in ring shape and at equal intervals.

[0012] Further, a plurality of breaking rods are fixedly connected to the top surface of the scraper plate in linear and equal intervals, a fixed plate is fixedly connected to the upper side of the scraper plate and matched with the inner wall of the buffer tube, a plurality of breaking rods are fixedly connected to the bottom of the fixed plate in linear and equal intervals, and the breaking rods are staggered.

[0013] Further, a fixed cylinder is fixedly connected to the middle of the sieve plate, the fixed cylinder is slidably connected with the rotating shaft, a support ring connected with the buffer tube is arranged below the sieve plate, a plurality of protrusions are fixedly arranged on the top surface of the support ring in ring shape and at equal intervals, a plurality of rollers are arranged on the upper side of the support ring in ring shape and at equal intervals, and the rollers are fixedly installed on the bottom of the sieve plate.

[0014] The bottom surface of the lower side is fixedly connected with an extrusion cover in a conical structure, and the inclined surface of the extrusion cover is arranged at an acute angle with the inclined surface of the sieve plate.

[0015] Further, a plurality of bolts are threadedly connected to the support ring in an annular and equidistant manner, the other ends of the bolts are movably penetrated to the outside of the buffer tube, the bolts are in vertical sliding connection with the buffer tube, and the bolts are in close abutment with the buffer tube.

[0016] Further, a plurality of limiting rings are fixedly connected to the sieve plate in a concentric and equidistant manner.

[0017] Another object of the present application is to provide a prefabricated assembly concrete preparation process, which aims to: disperse the agglomerated cement and fly ash in advance, improve the mixing uniformity with the slurry, and reduce the crushing probability of fine aggregate.

[0018] To achieve the above object, the present application provides the following technical scheme: a prefabricated assembly concrete preparation process, comprising the following steps:

[0019] S1, a large amount of water and aggregate are put into the vertical shaft planetary mixer, the stirring wall is rotated to mix the aggregate and water;

[0020] S2, cement and fly ash are put into the buffer tube, the rotating plate is rotated to drive the push plate to move, and the agglomerated raw materials are dispersed under the action of the rotating ring, the push plate, the fixed ring and the fixed rod;

[0021] S3, the dispersed raw materials fall onto the sieve plate, the sieve plate further screens the raw materials and makes them fall into the vertical shaft planetary mixer;

[0022] S4, the remaining water and aggregate are added to the vertical shaft planetary mixer, the stirring arm is stirred at medium and high speed for two minutes until the cement mortar is uniform and free of powder.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] 1. The cement and fly ash raw materials first enter the buffer tube, under the rotation of the rotating plate and the sieve plate, the push plate drives the raw materials to move in the annular channel, and the agglomerated raw materials are dispersed by cooperating with the fixed rod, then fall onto the sieve plate, and the raw materials are evenly spread and further dispersed on the sieve plate through the vibration and rotation of the sieve plate, and then fall into the stirring cylinder, so that the agglomerated raw materials are effectively dispersed through multiple dispersion processes before entering the stirring cylinder, and effectively mixed with the slurry, thereby avoiding the high-speed rotation of the stirring arm and causing the crushing of the aggregate.

[0025] 2. When the screen plate is vertically upwardly displaced, it cooperates with the extrusion cover to exert extrusion force on small pieces of raw materials entering the gap between the two, and the rotating screen plate cooperates with the fixed extrusion cover to mill the raw materials, realizing further crushing of the raw materials, and finally making them reach the ideal crushing state.

[0026] 3. The up-and-down moving adjusting bolt can adjust the height of the support ring, change the distance between the screen plate and the extrusion cover at the bottom surface of the lower partition plate, and through the adjustment of the distance, different types and different particle sizes of raw materials can be adapted, different degrees of dispersion treatment are realized, and the application scenarios of the equipment are enriched. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is an overall structure perspective view of the prefabricated assembly type concrete preparation equipment of the application;

[0028] Figure 2 It is an internal structure schematic view of the buffer pipe of the prefabricated assembly type concrete preparation equipment of the application;

[0029] Figure 3 It is a vertical split schematic view of the partition plate and rotating plate structure of the prefabricated assembly type concrete preparation equipment of the application;

[0030] Figure 4 It is a schematic view of the push plate and fixed rod structure of the prefabricated assembly type concrete preparation equipment of the application;

[0031] Figure 5 It is a schematic view of the rotating shaft, screen plate and rotating plate structure of the prefabricated assembly type concrete preparation equipment of the application;

[0032] Figure 6 It is a schematic view of the flow guide cover and scraper structure of the prefabricated assembly type concrete preparation equipment of the application;

[0033] Figure 7 It is a schematic view of the screen plate and support ring structure of the prefabricated assembly type concrete preparation equipment of the application;

[0034] Figure 8 It is a schematic view of the screen plate and extrusion cover structure of the prefabricated assembly type concrete preparation equipment of the application;

[0035] Figure 9 It is a schematic view of the bolt and buffer pipe structure of the prefabricated assembly type concrete preparation equipment of the application.

[0036] In the drawings:

[0037] 1, vertical shaft planetary mixer; 2, feed inlet; 3, buffer tube; 4, partition; 5, through hole; 6, rotating plate; 7, rotating ring; 8, push plate; 9, fixed ring; 10, fixed rod; 11, empty slot; 12, sieve plate; 13, rotating shaft; 14, motor; 15, flow guide cover; 16, scraper; 17, broken rod one; 18, fixed plate; 19, broken rod two; 20, extrusion cover; 21, fixed cylinder; 22, roller; 23, support ring; 24, protrusion; 25, protection tube; 26, bolt; 27, limiting ring. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0039] Example 1, reference Figures 1-5 For the first embodiment of the present application, a prefabricated assembly concrete preparation equipment is provided, which comprises a vertical shaft planetary mixer 1, and two feed inlets 2 are arranged on the vertical shaft planetary mixer 1, one of which is fixedly connected with a buffer tube 3, and two partition plates 4 are fixedly connected to the inner wall of the buffer tube 3 in the axial direction, a plurality of through holes 5 are arranged at the edge of the partition plates 4 in a ring shape and at equal intervals, the through holes 5 of the two partition plates 4 are staggered, and a rotating plate 6 is rotatably connected between the two partition plates 4, a plurality of rotating rings 7 are arranged on the outer side of the rotating plate 6 in a concentric and equal interval manner, a plurality of push plates 8 are fixedly connected between adjacent two rotating rings 7 and between the rotating plate 6 and the adjacent rotating ring 7, a fixed ring 9 is arranged on the lower side of the rotating ring 7, and the fixed ring 9 is fixedly connected to the top surface of the lower partition plate 4, a plurality of fixed rods 10 are arranged between adjacent two fixed rings 9 and between the rotating plate 6 and the adjacent fixed ring 9, and the fixed rods 10 are fixedly connected to the top surface of the lower partition plate 4, the bottom of the push plate 8 is in sliding contact with the lower partition plate 4, and an empty slot 11 adapted to the fixed rod 10 is arranged on the push plate 8; a sieve plate 12 is arranged below the lower partition plate 4, the sieve plate 12 has a hopper structure, a rotating shaft 13 is vertically connected to the middle of the sieve plate 12, the rotating shaft 13 penetrates the two partition plates 4 upwardly and is fixedly connected with the rotating plate 6, a motor 14 is fixedly installed on the outer wall of the buffer tube 3, and a chain is connected between the output end of the motor 14 and the lower end of the rotating shaft 13.

[0040] Specifically, in the actual operation process of the prefabricated assembly concrete preparation equipment, the raw materials need to complete the pretreatment according to a specific path before entering the mixing link: the powder raw materials such as cement and fly ash first enter the buffer tube 3, are dispersed by the structure inside the buffer tube 3, and then enter the mixing cylinder of the vertical shaft planetary mixer 1; and the aggregates do not need to be pretreated by dispersion, and directly enter the mixing cylinder of the vertical shaft planetary mixer 1 through the other feed inlet 2.

[0041] The specific dispersing process is as follows: the mutual cooperation between the two adjacent fixed rings 9 and between the rotating plate 6 and the adjacent fixed ring 9 forms a plurality of independent annular channels, which provides space for the step-by-step dispersing of the raw materials. When the motor 14 is started, the output end drives the rotating shaft 13 to rotate through the chain, and the rotating plate 6 and the sieve plate 12 fixedly connected with the rotating shaft 13 also rotate synchronously. At this time, the raw materials entering the buffer tube 3 first fall into the annular channel through the through hole 5 of the upper partition plate 4, and the rotating push plate 8 will push the raw materials to continuously move in the annular channel; in the moving process, the push plate 8 cooperates with the fixed rod 10 to produce an extrusion effect on the raw materials in the channel, which disperses the originally caked raw materials into small pieces. The small pieces of raw materials continue to move and are discharged onto the sieve plate 12 below through the through hole 5 of the lower partition plate 4. Since the sieve plate 12 is in the form of a hopper structure and is in a rotating state, when the small pieces of raw materials roll off the sieve plate 12, they will be further dispersed with the help of the inclined surface of the sieve plate 12 and the rotating centrifugal force, and finally form fine materials before entering the stirring cylinder of the vertical shaft planetary mixer 1.

[0042] Through the double pretreatment structure of "extrusion dispersion + rotating screening", the caking of cement, fly ash and other powder raw materials can be effectively broken, and the uneven mixing caused by direct entry of caked raw materials into the stirring cylinder can be avoided, thereby improving the homogeneity of the concrete mixture; the annular channel and the staggered through hole 5 in the buffer tube 3 provide a stable flow path for the raw materials during pretreatment, and the hopper structure of the sieve plate 12 can reduce the residue of the raw materials and improve the utilization rate of the raw materials, thereby ensuring the production quality of the subsequent prefabricated parts.

[0043] Referring to Figure 1 , the lower end of the buffer tube 3 and the upper end of the corresponding feed inlet 2 are fixedly connected with flanges, and the two flanges are connected and fixed by screws and nuts.

[0044] Referring to Figure 3 , Figure 4 , the plurality of push plates 8 and the plurality of fixed rods 10 are arranged in a ring shape at equal intervals, and the number of push plates 8 is greater than the number of fixed rods 10.

[0045] Specifically, the rotating plate 6 drives the rotating ring 7 and the push plate 8 to rotate synchronously, the push plate 8 equally divides the annular channel into a plurality of arc intervals, and after the push plate 8 passes through the fixed rod 10, the extruded and broken raw materials can be pushed to the through hole 5, so that the raw materials fall downward through the through hole 5.

[0046] Referring to Figure 5 , the inner wall of the buffer tube 3 is fixedly connected with a protective tube 25, the lower end of the rotating shaft 13 is rotatably connected with the protective tube 25, and the chain is arranged in the protective tube 25.

[0047] Specifically, the buffer tube 3 has a chain hole at one end corresponding to the protective tube 25. This chain hole provides a passage for the transmission chain. One end of the chain passes through the chain hole and enters the interior of the protective tube 25, and two sprockets are meshed on the inner side of the chain. The two sprockets are respectively connected and fixed to the lower end of the rotating shaft 13 and the output end of the motor 14. When the motor 14 starts, the sprocket at its output end drives the sprocket at the lower end of the rotating shaft 13 to rotate synchronously through the chain, thereby driving the rotating shaft 13, the rotating plate 6, and the screen plate 12 to achieve stable operation.

[0048] Understandably, the top surface of the protective tube 25 is symmetrically designed with two inclined surfaces. The raw materials falling through the screen plate 12 continue to slide down through the inclined surfaces, preventing them from accumulating on the protective tube 25.

[0049] Reference Figure 4 , Figure 6 The top surface of the upper partition 4 is rotatably connected to a conical guide shroud 15. The upper end of the rotating shaft 13 passes through the upper partition 4 and is connected and fixed to the guide shroud 15. Multiple scraper blades 16 are fixedly connected in an annular shape at equal intervals on the outer wall of the guide shroud 15.

[0050] Specifically, the guide shroud 15, with its conical structure, guides the raw material falling onto the top surface of the upper partition 4, directing it steadily towards the through hole 5. Simultaneously, the rotating shaft 13, during its rotation, drives the guide shroud 15 and scraper 16 to rotate. The rotating scraper 16 actively propels the raw material, further assisting its movement towards the through hole 5. This synergistic effect significantly improves the efficiency of raw material movement on the partition 4, ensuring rapid and smooth descent from the through hole 5 and preventing conveying stagnation due to material accumulation. Furthermore, it effectively prevents localized accumulation, clumping, or blockage of the through hole 5 on the top surface of the upper partition 4, ensuring the continuity and stability of the overall equipment operation.

[0051] Reference Figure 6 The top surface of the scraper 16 is fixedly connected with multiple crushing rods 17 at equal intervals. The upper side of the scraper 16 is provided with a fixing plate 18 that is fixedly connected to the inner wall of the buffer tube 3. The bottom of the fixing plate 18 is fixedly connected with multiple crushing rods 19 at equal intervals. The crushing rods 17 and crushing rods 19 are arranged alternately.

[0052] Specifically, the first crushing rod 17 and the second crushing rod 19 on the top surface of the scraper 16 are arranged in an alternating pattern. When the scraper 16 rotates with the rotating shaft 13, it synchronously drives the first crushing rod 17 to rotate, causing the first crushing rod 17 to pass through the gap between the second crushing rods 19 during rotation. During this process, the alternating first crushing rod 17 and the second crushing rod 19 create a shearing and squeezing effect, which can initially disperse the intercepted large clumps of raw material, breaking them down into smaller particles. In this way, it can not only prevent large clumps from clogging subsequent channels, but also reduce the processing load of subsequent dispersion equipment, improve the overall raw material dispersion efficiency, and ensure the uniformity of raw material mixing and processing in subsequent processes.

[0053] Example 2, refer to Figure 7 , Figure 8 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a fixed cylinder 21 is fixedly connected to the middle of the sieve plate 12, the fixed cylinder 21 is slidably connected to the rotating shaft 13, a support ring 23 connected to the buffer tube 3 is provided below the sieve plate 12, a plurality of protrusions 24 are fixedly provided in an annular pattern on the top surface of the support ring 23, and a plurality of rollers 22 are provided in an annular pattern on the upper side of the support ring 23, the rollers 22 are fixedly installed at the bottom of the sieve plate 12; a conical extrusion cover 20 is fixedly connected to the bottom surface of the lower partition plate 4, the inclined surface of the extrusion cover 20 is set at an acute angle to the inclined surface of the sieve plate 12.

[0054] Specifically, the sliding fit between the rotating shaft 13 and the fixed cylinder 21 allows the screen plate 12 to rotate while simultaneously moving vertically. As the screen plate 12 rotates, the roller 22 fixedly mounted at its bottom intermittently contacts the protrusion 24 on the top surface of the lower support ring 23. With continuous rotation of the screen plate 12, each contact of the roller 22 with a protrusion 24 causes the screen plate 12 to rise vertically once, then naturally fall back after disengaging from the protrusion 24. This cycle generates high-frequency vibration in the screen plate 12. During this process, on the one hand, when the screen plate 12 moves vertically upwards, it engages with the extrusion cover 20, applying a compressive force to the small pieces of raw material entering the gap between them. Simultaneously, the rotating screen plate 12, in conjunction with the stationary extrusion cover 20, grinds the raw material, further crushing it until it reaches a pulverized state. On the other hand, the high-frequency vibration generated by the screen plate 12 quickly disperses the pulverized raw material, effectively preventing the pulverized material from accumulating at the screen holes and preventing slow material flow caused by screen hole blockage.

[0055] Multiple slide bars are axially fixed on the shaft wall of the rotating shaft 13 located at the position of the fixed cylinder 21. The fixed cylinder 21 slides with the slide bars, so that while the rotating shaft 13 drives the fixed cylinder 21 to rotate, the fixed cylinder 21 can slide on the rotating shaft 13.

[0056] The distance between the edge of the extrusion shroud 20 and the screen plate 12 is greater than the distance between the middle of the extrusion shroud 20 and the screen plate 12. As the raw material falls up and down on the screen plate 12, the contact between the raw material and the extrusion shroud 20 gradually increases, thereby achieving effective dispersion of the raw material.

[0057] Reference Figure 9 The support ring 23 has multiple bolts 26 connected in a ring with equal spacing. The other end of the bolts 26 extends through to the outside of the buffer tube 3. The bolts 26 are vertically slidably connected to the buffer tube 3, and the bolts 26 and the buffer tube 3 are tightly abutted.

[0058] Specifically, multiple adjustment holes are vertically formed on the wall of the buffer tube 3 (the positions of the adjustment holes correspond to the mounting positions of the bolts 26 on the support ring 23); multiple bolts 26 are threaded in a ring and at equal intervals on the support ring 23, with one end of each bolt 26 passing through the corresponding adjustment hole on the buffer tube 3 and forming a secure threaded connection with the support ring 23. When it is necessary to adjust the height of the support ring 23, simply loosen the bolts 26 (at this time, the bolts 26 are no longer in contact with the wall of the buffer tube 3), and the support ring 23 can be moved vertically along the adjustment hole of the buffer tube 3; after the support ring 23 is adjusted to the target height, tighten the bolts 26 again, so that the bolts 26 are tightly in contact with the wall of the buffer tube 3, thereby fixing the position of the support ring 23. Since the support ring 23 provides downward support for the sieve plate 12, changes in the height of the support ring 23 will simultaneously adjust the height of the sieve plate 12, thereby changing the distance between the sieve plate 12 and the bottom extrusion cover 20 of the lower partition plate 4. By adjusting this distance, different degrees of dispersion processing can be achieved for raw materials of different types and particle sizes, effectively enriching the applicable scenarios of the equipment. The remaining structure is the same as that in Embodiment 1.

[0059] Example 3, referring to Figure 7 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the screening surface of the sieve plate 12 is fixedly connected with multiple limiting rings 27 at equal intervals in a concentric manner.

[0060] Specifically, multiple limiting rings 27 are fixedly connected concentrically and at equal intervals on the screening surface of the sieve plate 12. During the raw material falling process, the limiting rings 27 can effectively intercept the falling raw material, preventing it from directly accumulating in the bottom area of ​​the sieve plate 12 due to excessive falling speed. At the same time, when the sieve plate 12 is running under high-frequency vibration, the raw material intercepted by the limiting rings 27 will spread out evenly in an umbrella shape under the combined action of vibration thrust and the guidance of the limiting rings 27. This spreading method can significantly improve the flatness and uniformity of the raw material on the screening surface of the sieve plate 12, ensuring that the raw material does not accumulate locally, but falls through the sieve plate 12 in a uniform distribution, thereby creating favorable conditions for the subsequent mixing process of raw material and slurry. The rest of the structure is the same as that in Example 2.

[0061] Based on embodiments 1-3, the working principle of this invention is as follows: Most of the water and aggregates first enter the mixing tank of the vertical shaft planetary mixer 1 directly through a feed inlet 2; powder raw materials such as cement and fly ash first enter the feed inlet 2 with a buffer pipe 3 for pretreatment. The motor 14 starts and drives the rotating shaft 13 to rotate, and the rotating shaft 13 synchronously drives the rotating plate 6, the screen plate 12 and the guide shroud 15 to rotate. After the powder raw materials fall into the buffer pipe 3, the conical structure of the guide shroud 15 cooperates with the scraper 16 to guide the raw materials to move through the through hole 5 of the upper partition 4. At the same time, the crushing rod 17 on the scraper 16 and the crushing rod 19 on the fixed plate 18 interlock and shear, initially breaking up the large clumps of raw materials. The raw materials enter the annular channel through the through hole 5 of the upper partition 4. The rotating pusher 8 pushes the raw materials to move in the channel, cooperating with the fixed rod 10 to squeeze and break up the clumps, and then fall to the screen plate 12 through the through hole 5 of the lower partition 4. The sieve plate 12 rotates, further dispersing the raw materials with centrifugal force. The rollers 22 at the bottom of the sieve plate 12 cooperate with the protrusions 24 on the top surface of the support ring 23, causing the sieve plate 12 to vibrate at high frequency. At the same time, the sieve plate 12 and the extrusion cover 20 on the bottom surface of the lower partition plate 4 further crush the raw materials. Finally, the dispersed fine material enters the mixing cylinder of the vertical shaft planetary mixer 1. The remaining water and aggregates are then added, and complete mixing is achieved under the rotation of the mixing arms.

[0062] Example 4, refer to Figures 1-9 The fourth embodiment of the present invention provides a process for preparing precast concrete components, comprising the following steps:

[0063] S1. A large amount of water and aggregate are added into the vertical shaft planetary mixer 1. The mixing wall rotates to mix the aggregate and water.

[0064] S2. Cement and fly ash are added into the buffer tube 3. The rotating plate 6 rotates and drives the push plate 8 to move. Under the action of the rotating ring 7, the push plate 8, the fixed ring 9, and the fixed rod 10, the clumped raw materials are broken up.

[0065] S3. The dispersed raw material falls onto the sieve plate 12, which further filters the raw material and causes it to disperse into the vertical shaft planetary mixer 1.

[0066] S4. Add the remaining water and aggregate to the vertical shaft planetary mixer 1, and mix at medium to high speed for two minutes until a uniform cement mortar without lumps is formed.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A precast concrete component manufacturing equipment, comprising a vertical shaft planetary mixer (1), wherein the vertical shaft planetary mixer (1) is provided with two feed inlets (2), characterized in that, A buffer tube (3) is fixedly connected to one of the feed inlets (2). Two partitions (4) are axially fixedly connected to the inner wall of the buffer tube (3). Multiple through holes (5) are opened at equal intervals in a ring at the edge of the partition (4). The through holes (5) of the two partitions (4) are staggered, and a rotating plate (6) is rotatably connected between the two partitions (4). Multiple rotating rings (7) are arranged concentrically at equal intervals on the outer side of the rotating plate (6). Between two adjacent rotating rings (7) and between the rotating plate (6) and adjacent rotating rings (7), 7) Multiple push plates (8) are fixedly connected together. A fixed ring (9) is provided on the lower side of the rotating ring (7). The fixed ring (9) is fixedly connected to the top surface of the lower partition plate (4). Multiple fixed rods (10) are provided between two adjacent fixed rings (9) and between the rotating plate (6) and the adjacent fixed rings (9). The fixed rods (10) are fixedly connected to the top surface of the lower partition plate (4). The bottom of the push plate (8) is in sliding contact with the lower partition plate (4). The push plate (8) is provided with a slot (11) that matches the fixed rod (10). A sieve plate (12) is provided below the partition plate (4) on the lower side. The sieve plate (12) has a bucket-shaped structure. A rotating shaft (13) is vertically connected in the middle of the sieve plate (12). The rotating shaft (13) moves upward through the two partition plates (4). The rotating shaft (13) is connected and fixed to the rotating plate (6). A motor (14) is fixedly installed on the outer wall of the buffer tube (3). The output end of the motor (14) and the lower end of the rotating shaft (13) are connected together by a chain.

2. The prefabricated concrete component manufacturing equipment according to claim 1, characterized in that, The multiple push plates (8) and multiple fixing rods (10) are arranged in a ring with equal spacing, and the number of push plates (8) is greater than the number of fixing rods (10).

3. The prefabricated concrete component manufacturing equipment according to claim 1, characterized in that, The inner wall of the buffer tube (3) is fixedly connected to a protective tube (25), the lower end of the rotating shaft (13) is rotatably connected to the protective tube (25), and the chain is set inside the protective tube (25).

4. The prefabricated concrete component manufacturing equipment according to claim 1, characterized in that, The top surface of the upper partition (4) is rotatably connected to a conical flow guide (15). The upper end of the rotating shaft (13) passes through the upper partition (4) and is connected and fixed to the flow guide (15). The outer wall of the flow guide (15) is fixedly connected with multiple scrapers (16) in an annular shape at equal intervals.

5. The prefabricated concrete component manufacturing equipment according to claim 4, characterized in that, The top surface of the scraper (16) is fixedly connected with multiple crushing rods (17) at equal intervals. The upper side of the scraper (16) is provided with a fixing plate (18) that is fixedly connected to the inner wall of the buffer tube (3). The bottom of the fixing plate (18) is fixedly connected with multiple crushing rods (19) at equal intervals. The crushing rods (17) and crushing rods (19) are staggered.

6. The prefabricated concrete component manufacturing equipment according to claim 1, characterized in that, A fixed cylinder (21) is fixedly connected to the middle of the sieve plate (12). The fixed cylinder (21) is slidably connected to the rotating shaft (13). A support ring (23) connected to the buffer tube (3) is provided below the sieve plate (12). Multiple protrusions (24) are fixedly provided in an annular pattern on the top surface of the support ring (23). Multiple rollers (22) are provided in an annular pattern on the upper side of the support ring (23). The rollers (22) are fixedly installed at the bottom of the sieve plate (12). The bottom surface of the lower partition (4) is fixedly connected to a conical extrusion cover (20), and the inclined surface of the extrusion cover (20) is set at an acute angle to the inclined surface of the sieve plate (12).

7. The prefabricated concrete component manufacturing equipment according to claim 6, characterized in that, The support ring (23) is connected with multiple bolts (26) in a ring with equal spacing. The other end of the bolt (26) extends through to the outside of the buffer tube (3). The bolt (26) is vertically slidably connected to the buffer tube (3) and the bolt (26) is tightly abutted against the buffer tube (3).

8. The prefabricated concrete component manufacturing equipment according to claim 1, characterized in that, The sieve plate (12) has multiple limiting rings (27) that are fixedly connected in a concentric and equally spaced manner on the screening surface.

9. A process for preparing precast concrete components, applied to the precast concrete component preparation equipment according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Add a large amount of water and aggregate into the vertical shaft planetary mixer (1). The mixing wall rotates to mix the aggregate and water. S2. Cement and fly ash are added into the buffer tube (3). The rotating plate (6) rotates and drives the push plate (8) to move. Under the action of the rotating ring (7), the push plate (8), the fixed ring (9), and the fixed rod (10), the clumped raw materials are broken up. S3. The dispersed raw material falls onto the sieve plate (12), which further filters the raw material and disperses it into the vertical shaft planetary mixer (1). S4. Add the remaining water and aggregate to the vertical shaft planetary mixer (1), and mix at medium to high speed for two minutes until a uniform cement mortar without lumps is formed.

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