Machine-made sand preparation and concrete production integrated equipment

Abstract

The invention discloses machine-made sand preparation and concrete production integrated equipment, and belongs to the technical field of civil construction. Comprising a stirring pool, a stone crushing sleeve is arranged above the stirring pool, a conical deflection crushing head and an accurate grinding platform are arranged in an inner cavity of the stone crushing sleeve, the accurate grinding platform is arranged at an opening in the lower portion of the stone crushing sleeve, an accurate grinding assembly capable of rotating around the circle center of the accurate grinding platform is arranged on the accurate grinding platform, and the accurate grinding assembly comprises a catching plate; a catching plate is arranged on the upper surface of the fine grinding platform, a rotatable rotating shaft is fixed above the catching plate, a grinding piece with the grinding precision gradually reduced from the circle center of the fine grinding platform to the outer ring is arranged on the rotating shaft, and a gap is formed between the catching plate and the upper surface of the fine grinding platform. Integrated preparation of machine-made sand and concrete can be achieved, the prepared machine-made sand can be directly put into a concrete stirring pool to be mixed, and the whole process is more intelligent.

Description

Technical Field

[0001] The invention relates to integrated equipment for preparing machine-made sand and producing concrete, belonging to the technical field of civil engineering. Background Art

[0002] Machine-made sand refers to rock particles with a nominal particle size of less than 5mm obtained by crushing and screening rocks. It is widely used in today's concrete mixes. It has the advantages of high strength, good physical and mechanical properties, and controllable stone powder content. It can improve the compactness of concrete and the working performance of concrete.

[0003] Artificial sand itself needs to be obtained by rock crushing. Every time the rock is crushed into artificial sand, the artificial sand needs to be loaded and unloaded again and mixed with other materials to make concrete, which greatly increases the workload of making concrete with artificial sand. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide integrated equipment for preparing machine-made sand and producing concrete, which solves the problem in the prior art that the two processes of machine-made sand crushing and concrete production are carried out separately, resulting in a large workload.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical scheme: an integrated device for preparing machine-made sand and producing concrete comprises a mixing tank, a crushing sleeve is arranged above the mixing tank, and a conical deflecting crushing head is arranged in the inner cavity of the crushing sleeve.

[0006] A fine grinding platform is arranged at the opening below the stone crushing sleeve, and a fine grinding component rotatable around the center of the fine grinding platform is arranged on the fine grinding platform.

[0007] The fine grinding assembly includes a capture plate, and a rotatable rotating shaft is fixed above the capture plate, and a grinding piece with a grinding accuracy gradually decreasing from the center of the fine grinding platform to the outer circle is arranged on the rotating shaft, and a gap is arranged between the capture plate and the upper surface of the fine grinding platform.

[0008] A driving assembly, wherein the driving assembly comprises a rotating truncated table, wherein the rotating truncated table is arranged concentrically with the fine grinding platform and below the fine grinding platform,

[0009] The stirrer is arranged below the rotating table.

[0010] By adopting the above technical scheme, the integration of machine-made sand grinding and concrete production can be achieved, eliminating the process of repeated loading and unloading of machine-made sand. The raw rock is broken into coarse machine-made sand by the cooperation of the crushing sleeve and the conical eccentric crushing head, and then falls into the fine grinding platform and is ground into machine-made sand with qualified particle size by the fine grinding component and falls into the mixing tank for concrete production.

[0011] During the fine grinding of machine-made sand, the coarse machine-made sand falling on the fine grinding platform moves outwards due to the rotation of the fine grinding platform under the action of centrifugal force. After being captured by the fine grinding component during the movement, it is ground by the grinding piece to form machine-made sand with smaller particle size. Since the grinding piece is provided with grinding threads, the grinding piece can drive the machine-made sand to move toward the center of the fine grinding platform during the rotation process. Through repeated grinding, the machine-made sand finally reaches a size that meets the standards. The machine-made sand with a sufficiently small particle size is not captured by the fine grinding component and is brought into the mixing tank by the centripetal force of the rotation of the fine grinding platform.

[0012] The present invention is further configured as follows: a plurality of grinding parts are arranged on the rotating shaft, and grinding threads with the same pitch are arranged on the grinding parts. The grinding thread pitch of the grinding part located at the center of the fine grinding platform is the smallest, and the grinding thread pitch of the grinding part located at the outermost circle of the fine grinding platform is the largest. The plurality of grinding parts are connected in series through the rotating shaft, and a circular baffle is arranged on the rotating shaft located at the outermost circle of the fine grinding platform.

[0013] By adopting the above technical solution, the thread gap of the peripheral grinding parts is the largest, and the larger particles of machine-made sand can be ground. Since the larger particles of machine-made sand are subjected to the largest centrifugal force generated by the rotation of the fine grinding platform, most of the large particles of machine-made sand are thrown to the periphery of the fine grinding platform, so that the peripheral grinding parts can grind the larger particles of machine-made sand more accurately, and the grinding parts in the inner circle of the fine grinding platform can grind the smaller particles of machine-made sand.

[0014] The present invention is further configured as follows: a driver 1 and a driver 2 are respectively provided at both ends of the rotating shaft, a coupling is provided at the center of the rotating shaft, and the grinding parts at both ends of the coupling are respectively driven to rotate by the driver 1 and the driver 2.

[0015] By adopting the above technical solution, two drivers drive the grinding parts on both sides of the center of the rotating shaft respectively, which can greatly increase the overall grinding power. Driver 1 is set at the center of the fine grinding platform, and its power is smaller than driver 2 set at the periphery of the fine grinding platform, so that the peripheral fine grinding parts can have sufficient power when fine grinding larger particles of coarse machine-made sand.

[0016] The present invention is further configured as follows: the drive assembly also includes a main bevel gear arranged between the rotating circular table and the fine grinding platform, the main bevel gear is meshed with at least three auxiliary bevel gears, the auxiliary bevel gear is provided with a drive shaft, and the other end of the drive shaft is connected to a drive box.

[0017] By adopting the above technical solution, the main bevel gear and the secondary bevel gear are meshed with each other, and the secondary bevel gear rotates under the drive of the drive box, driving the main bevel gear to rotate, thereby realizing the rotation of the entire fine grinding platform. At the same time, with at least three secondary bevel gears meshing, the main bevel gear can be stably lifted and suspended in the air. The meshing design of the main bevel gear and multiple secondary bevel gears can effectively transmit the power of the rotating table to each secondary bevel gear, and then transmit it to the drive box through the drive shaft, thereby realizing efficient conversion and transmission of power. By adjusting the number and layout of the secondary bevel gears, the distribution of power in multiple directions can be flexibly controlled to meet the power requirements under different working conditions. The design of multiple secondary bevel gears can disperse the load transmitted from the rotating table, reduce the stress of a single component, and thus improve the stability and durability of the entire system.

[0018] The present invention is further configured as follows: a gap is left between the inner wall surface of the stone crushing sleeve and the conical deflected crushing head, the center line of the conical deflected crushing head deviates from the center line of the stone crushing sleeve, and when the conical deflected crushing head rotates, the gap in the circumferential direction between the conical deflected crushing head and the inner wall of the stone crushing sleeve changes continuously.

[0019] By adopting the above technical solution, the initially added crushed stone raw materials can be quickly crushed, processed into coarse machine-made sand, and then discharged through the gap between the conical eccentric crushing head and the crushing sleeve, and fall onto the fine grinding platform. Among them, the working principle of the conical eccentric crushing head and the crushing sleeve is the same as the crushing principle of the cone crusher. The conical eccentric crushing head continuously rotates to change the gap between the surface of the conical eccentric crushing head and the inner wall of the crushing sleeve, thereby realizing continuous extrusion and crushing of the rock raw materials.

[0020] The present invention is further configured as follows: a limiting ring is provided on the outer wall of the crushing sleeve, the crushing sleeve is fixed by the limiting ring, the outer ring of the limiting ring is connected to a spraying plate, the other end of the spraying plate is connected to a support rod, and the support rod is fixed on the side wall of the mixing tank.

[0021] By adopting the above technical solution, the limiting ring can fix the stone crushing sleeve and maintain the stability of the stone crushing sleeve. When the stone crushing sleeve is crushing, it can apply sufficient counter pressure to the added rock raw materials. The spray plate and the limiting ring are connected to each other, which plays a connecting and fixing role for the limiting ring. When mixing concrete, when adding cement and other raw materials and mixing with machine-made sand, it is necessary to continuously add water to the mixing tank for mixing. The spray plate is set at the position directly above the mixing tank, so that the mixed liquid can be sprayed into the mixing tank in time to replenish the required water in the mixing tank, so that the quality of the concrete is sufficient to meet the standards.

[0022] The present invention is further configured as follows: the spray plate is provided with a spray hole, the spray hole is connected to a water supply device, and when concrete is mixed, corresponding water is sprayed into the mixing tank through the spray hole for mixing.

[0023] By adopting the above technical solution, the spray holes on the spray plate can make the added water contact the raw materials in the mixing process more evenly when adding water to the mixing tank, so that the mixing time of the concrete is shortened. The spray holes are directly connected to the water supply device, so that the continuous water supply can be guaranteed.

[0024] The present invention is further configured as follows: the bottom of the stirring tank is supported by a plurality of support columns, a discharge port is provided at the bottom of the stirring tank, and a discharge baffle that can be rotatably opened and closed is provided at the discharge port.

[0025] By adopting the above technical solution, the support column is used to suspend the entire mixing tank in the air, so that the mixing tank can quickly discharge the concrete from the bottom. In the process of discharging concrete, it is inevitable that concrete will spill on the ground. By suspending the mixing tank in the air through the support column, it is possible to prevent the mixing tank from being adhered to the concrete spilled on the ground, so that the mixing tank is adhered to the ground. The discharge port is provided with a discharge baffle that can be opened and closed freely, and the discharge of concrete is achieved by rotating the discharge baffle. The discharge port is provided at the bottom of the mixing tank, so after opening the discharge baffle, the mixed concrete can be automatically discharged from the discharge port. During the mixing process, free discharge can be achieved, and there is no need to manually discharge the concrete from the mixing tank. The discharge timing of the finished concrete can be freely controlled, so that the concrete can be accurately received by the transportation equipment and transported to the construction area.

[0026] The present invention is further configured as follows: a connecting rod extends from the capture plate toward the outer ring of the fine grinding platform, and an end of the connecting rod is connected to the support rod.

[0027] By adopting the above technical solution, the connecting rod is connected to the supporting rod, so that when the fine grinding platform rotates, the capture plate connected to the other end of the connecting rod can rotate relative to the fine grinding platform, thereby capturing and grinding the coarse machine-made sand that falls on the fine grinding platform.

[0028] The present invention is further configured as follows: a circular clamping plate is provided on the lower surface of the fine grinding platform, a fixing block is sleeved on one end of the driving shaft connected to the auxiliary bevel gear, and an arc clamping groove is provided on the fixing block for slidingly engaging with the circular clamping plate.

[0029] By adopting the above technical solution, the entire fine grinding platform can be made more stable. In the process of the fine grinding platform rotating through the mutual meshing of the main bevel gear and the auxiliary bevel gear, the circular clamping plate and the arc clamping groove on the fixed block slide and engage with each other, so that the fine grinding platform will not be misaligned during the rotation process. The transmission stability of the entire device is higher.

[0030] The beneficial effects of the present invention are as follows: the preparation of concrete with machine-made sand is faster and more convenient, the preparation of machine-made sand is integrated with the preparation of concrete, there is no need to repeatedly load and unload the machine-made sand, the prepared machine-made sand can be directly put into the concrete mixing tank for mixing, the whole process is more automatic and intelligent, the machine-made sand initially supported is further fine-ground by the fine-grinding platform, so that the particle size of the machine-made sand added to the mixing tank is small enough, so that the quality of the prepared concrete is greatly improved, the machine-made sand is separated by the centrifugal force of the fine-grinding platform, the machine-made sand with larger particles is thrown to the outermost periphery of the fine-grinding platform, and the machine-made sand with smaller particles is relatively gathered in the inner circle of the fine-grinding platform, and the coarse machine-made sand is further accurately fine-ground in cooperation with the grinding parts with different fine-grinding threads. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 2 This is the positive attempt of the present invention;

[0033] Figure 3 It is a schematic diagram of the three-dimensional structure of the discharge baffle of the present invention;

[0034] Figure 4 A direction sectional view of the present invention;

[0035] Figure 5 It is a schematic diagram of the three-dimensional structure of the fine grinding platform and the fine grinding assembly of the present invention.

[0036] In the figure: 1. mixing tank; 2. crushing sleeve; 3. conical eccentric crushing head; 4. fine grinding platform; 5. fine grinding assembly; 6. driving assembly; 7. discharge port; 8. discharge baffle; 9. connecting rod; 10. supporting rod; 11. limiting ring; 12. spraying plate; 13. rotating center axis; 14. opening and closing rod; 15. supporting column; 501. driver 2; 502. capture plate; 503. driver 1; 504. grinding part; 505. coupling; 506. circular baffle; 507. rotating shaft; 601. rotating round table; 602. main bevel gear; 603. secondary bevel gear; 604. fixing block; 605. driving shaft; 606. driving box; 607. circular clamping plate. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0038] like Figure 1As shown, the integrated equipment for preparing machine-made sand and producing concrete includes a mixing tank 1, which is circular. A crushing sleeve 2 is arranged above the mixing tank 1, and a conical eccentric crushing head 3 is arranged in the inner cavity of the crushing sleeve 2. The crushing sleeve 2 and the conical eccentric crushing head 3 are combined with each other to form a conical crushing structure. During the rotation of the conical eccentric crushing head 3, the rock raw materials falling into the crushing sleeve 2 are continuously squeezed and crushed due to the continuous change of the gap between the conical eccentric crushing head 3 and the inner wall of the crushing sleeve 2. The rock raw materials are gradually crushed into coarse machine-made sand under continuous squeezing, and the coarse machine-made sand passes through the gap and falls onto the fine grinding platform 4 when the gap between the inner wall of the crushing sleeve 2 and the conical eccentric crushing head 3 becomes larger next time.

[0039] The fine grinding platform 4 is arranged at the opening below the stone crushing sleeve 2, and a fine grinding component 5 is arranged on the fine grinding platform 4, which can rotate around the center of the fine grinding platform 4. The fine grinding platform 4 is disc-shaped as a whole, and is used to receive the coarse machine-made sand falling from the stone crushing sleeve 2. The fine grinding platform 4 rotates itself, so that the coarse machine-made sand falling on the fine grinding platform 4 is subjected to a larger centrifugal force under the action of centrifugal force, and the machine-made sand with larger particles is thrown to the outer circle of the fine grinding platform 4, and is blocked by the circular baffle 506 arranged on the outer circle to prevent it from being directly thrown out of the fine grinding platform 4. The machine-made sand with smaller particles is subjected to a smaller centrifugal force and is thrown to the inner circle area of ​​the fine grinding platform 4.

[0040] The circular baffle 506 is shown in FIG. Figure 5 Not shown in other drawings.

[0041] The fine grinding assembly 5 includes a capture plate 502, which distributes the machine-made sand of different particles roughly to different radius areas of the fine grinding platform 4 through the action of centrifugal force, scoops up the machine-made sand through the capture plate 502, and performs fine grinding under the rolling of the fine grinding piece. A rotatable rotating shaft 507 is fixed above the capture plate 502, and the rotating shaft 507 connects the various fine grinding pieces in series, so that synchronous transmission can be achieved during the process of fine grinding of the machine-made sand. A gap is provided between the capture plate 502 and the upper surface of the fine grinding platform 4 on the rotating shaft 507, and the machine-made sand with qualified particle size flows into the gap after being ground by the fine grinding piece, and is gradually thrown out of the fine grinding platform 4 by the centrifugal force generated during the rotation of the fine grinding platform 4, and falls into the mixing tank 1 for the preparation of concrete.

[0042] The driving assembly 6 is used to drive the conical deflection crushing head 3 and the fine grinding platform 4 to rotate. The driving assembly 6 includes a rotating truncated table 601, which is concentrically arranged below the fine grinding platform 4. The concentric arrangement allows the rotation of the two to be more synchronous.

[0043] The agitator is disposed below the rotating truncated table 601 and is used for synchronously stirring the cement and machine-made sand in the stirring tank 1 .

[0044] The device realizes the integration of machine-made sand grinding and concrete production, eliminating the process of repeated loading and unloading of machine-made sand. The raw rock is crushed into coarse machine-made sand by the cooperation of the crushing sleeve 2 and the conical eccentric crushing head 3, and then falls into the fine grinding platform 4 and is ground into machine-made sand with qualified particle size by the fine grinding component 5 and falls into the mixing tank 1 for concrete production.

[0045] like Figure 5 As shown, there are several grinding parts 504 arranged on the rotating shaft 507, and a single grinding part 504 is provided with a grinding thread with the same pitch. The pitch of the grinding thread on each individual grinding part 504 is different. The grinding thread pitch of the grinding part 504 located at the center of the fine grinding platform 4 is the smallest, and the grinding thread pitch of the grinding part 504 located at the outermost circle of the fine grinding platform 4 is the largest. Several grinding parts 504 are connected in series through the rotating shaft 507, and a circular baffle 506 is provided on the rotating shaft 507 located at the outermost circle of the fine grinding platform 4.

[0046] The thread gap of the peripheral grinding piece 504 is the largest, and it can grind the larger particles of machine-made sand. Since the larger particles of machine-made sand are subjected to the largest centrifugal force generated by the rotation of the fine grinding platform 4, most of the large particles of machine-made sand are thrown to the periphery of the fine grinding platform 4, blocked by the outer circular baffle 506, and then captured by the capture plate 502, and then ground by the grinding piece 504. Therefore, the peripheral grinding piece 504 can grind the larger particles of machine-made sand more accurately, and the grinding piece 504 in the inner circle of the fine grinding platform 4 can grind the smaller particles of machine-made sand.

[0047] A driver 1 503 and a driver 2 501 are respectively arranged at both ends of the rotating shaft 507. In this embodiment, the driver 1 503 and the driver 2 501 are both driven by motors, wherein the driving power of the driver 1 503 is less than the driving power of the driver 2 501. A coupling 505 is arranged at the center of the rotating shaft 507, and the grinding pieces 504 at both ends of the coupling 505 are driven to rotate by the driver 1 503 and the driver 2 501 respectively. The two drivers drive the grinding pieces 504 on both sides of the center of the rotating shaft 507 respectively, so that the overall grinding power can be greatly increased. Because the power of the driver 1 503 is less than that of the driver 2 501 arranged at the periphery of the fine grinding platform 4, the driver 1 503 is arranged at the center of the fine grinding platform 4, so that the peripheral fine grinding pieces can have sufficient power when fine grinding the coarse machine-made sand with larger particles. This arrangement enables each grinding piece 504 to accurately grind the machine-made sand with different particle sizes, thereby accelerating the fine grinding of the machine-made sand.

[0048] like Figure 2 and Figure 4 As shown, the driving assembly 6 also includes a main bevel gear 602 arranged between the rotating circular table 601 and the fine grinding platform 4. The main bevel gear 602 is meshed with at least three auxiliary bevel gears 603. The auxiliary bevel gear 603 is provided with a driving shaft 605, and the other end of the driving shaft 605 is connected to a driving box 606.

[0049] The driving box 606 contains a power source for driving the driving shaft 605 connected thereto to rotate, and the specific internal components are not described in detail here.

[0050] In this embodiment, the main bevel gear 602 and the secondary bevel gear 603 mesh with each other, and a protective cover (not shown) is provided in the meshing area of ​​the two to prevent foreign objects from interfering with the main bevel gear 602 and the secondary bevel gear 603 during the transmission process. The main bevel gear 602 and the secondary bevel gear 603 are both provided with standard parts. The number of the secondary bevel gears 603 is generally set to three, which can make the stability of the entire device higher and can support a heavier weight of the fine grinding platform 4.

[0051] There is a gap between the inner wall of the stone crushing sleeve 2 and the conical eccentric crushing head 3. The center line of the conical eccentric crushing head 3 deviates from the center line of the stone crushing sleeve 2. When the conical eccentric crushing head 3 rotates, the gap between the inner wall of the stone crushing sleeve 2 and the conical eccentric crushing head 3 in the circumferential direction changes continuously. By continuously changing the size of the gap between the inner wall of the stone crushing sleeve 2 and the conical eccentric crushing head 3, the initially added stone raw materials can be quickly crushed, and after being processed into coarse machine-made sand, it is discharged through the gap between the conical eccentric crushing head 3 and the stone crushing sleeve 2 and falls onto the fine grinding platform 4.

[0052] Among them, the working principle of the conical eccentric crushing head 3 and the crushing sleeve 2 is the same as the crushing principle of the cone crusher. The conical eccentric crushing head 3 is continuously rotated to change the gap between the surface of the conical eccentric crushing head 3 and the inner wall of the crushing sleeve 2, thereby realizing continuous extrusion and crushing of the rock raw materials.

[0053] The outer wall of the stone crushing sleeve 2 is provided with a limit ring 11, and the stone crushing sleeve 2 is fixed by the limit ring 11. The outer ring of the limit ring 11 is connected with a spray plate 12, and the other end of the spray plate 12 is connected with a support rod 10, and the support rod 10 is fixed on the side wall of the mixing tank 1. The spray plate 12 is provided with a spray hole, and the spray hole is connected to the water supply device. When mixing concrete, the corresponding water is sprayed into the mixing tank 1 through the spray hole for mixing.

[0054] The spray hole on the spray plate 12 is connected to the water supply device, which can accurately spray an appropriate amount of water into the mixing tank 1 during the mixing process. This fixed-point and quantitative water spraying method helps to achieve uniform distribution of water in the concrete, avoid local over-wetting or over-drying, and improve the homogeneity of the concrete. The spray plate 12 allows water to be directly and evenly sprayed onto the mixing material, especially the surface of the gravel, which helps to accelerate the hydration reaction of cement and promote the formation of concrete strength. At the same time, the timely replenishment of water also helps to reduce dust flying during the mixing process and improve the working environment. The setting of the limit ring 11 enables the gravel sleeve 2 to be firmly fixed in the mixing tank 1 to prevent it from shifting or falling off during the mixing process. The spray plate 12 is fixed to the side wall of the mixing tank 1 through the support rod 10, and the structure is stable and reliable, easy to install and disassemble, and convenient for later maintenance and replacement. By accurately controlling the amount of water sprayed, unnecessary waste can be avoided and water resource consumption can be reduced. At the same time, uniform mixing and rapid hydration reaction also help to reduce mixing time and energy consumption, and achieve the goal of energy conservation and emission reduction.

[0055] The spray holes on the spray plate 12 can make the added water contact the raw materials in the mixing process more evenly when adding water to the mixing tank 1, so that the mixing time of the concrete is shortened. The spray holes are directly connected to the water supply device, so that the continuous water supply of the water flow can be guaranteed.

[0056] The spray plate 12 is made of steel material to ensure that it has strong strength enough to support the stone crushing sleeve 2. A water flow loop connected to the spray hole is arranged inside the spray plate 12, and the water supply device supplies water to the spray plate 12 through the water flow loop, and sprays water from the spray hole.

[0057] The bottom of the stirring tank 1 is supported by a plurality of support columns 15 . A discharge port 7 is provided at the bottom of the stirring tank 1 . The discharge port 7 is provided with a discharge baffle 8 that can be rotatably opened and closed.

[0058] like Figure 3 As shown, the discharge baffle 8 is installed at the discharge port 7 of the bottom plate of the mixing tank 1 through a rotating central axis 13, and an opening and closing rod 14 for opening and closing is provided on the discharge baffle 8. By rotating the opening and closing rod 14, the opening and closing of the discharge baffle 8 can be controlled, thereby realizing the rapid discharge of concrete in the mixing tank 1.

[0059] The mixing tank 1 is supported and suspended by the support rod 10, so that the stirred concrete can be automatically discharged from the discharge port 7 at the bottom of the mixing tank 1 by opening the discharge baffle 8 when it is needed. The suspended design of the mixing tank 1 cooperates with the discharge port 7 at the bottom and the openable discharge baffle 8, so that the concrete can be discharged directly from the discharge port 7 quickly and smoothly by gravity after the mixing is completed. This method avoids the cumbersome process that may require mechanical force or manual assistance to complete the discharge in the traditional mixing equipment, and greatly improves the discharge efficiency. The suspended design makes the bottom and surrounding space of the mixing tank 1 relatively open, which is convenient for thorough cleaning and maintenance of the mixing tank 1 after the mixing is completed. This helps to maintain the cleanliness of the mixing tank 1, extend the service life of the equipment, and reduce the sanitation problems caused by the inconvenience of cleaning. The operator can more easily approach the bottom of the mixing tank 1 to perform the discharge operation, as well as inspect and maintain the mixing tank 1 and the supporting structure. At the same time, the suspended design also provides convenience for the movement or reinstallation of the mixing tank 1. Although the suspended design itself does not directly improve the mixing effect, it contributes to the overall stability and balance of the mixing tank 1, thereby indirectly ensuring the uniformity and quality of the concrete during the mixing process. A stable mixing environment helps reduce bubbles and uneven mixing in the concrete. The suspended design reduces the direct contact between the mixing tank 1 and the ground, reducing the potential safety hazards caused by uneven or slippery ground. At the same time, by rationally designing the support structure, the stability of the mixing tank 1 can be further enhanced to ensure safety during operation.

[0060] A connecting rod 9 extends from the capture plate 502 toward the outer circle of the fine grinding platform 4, and the end of the connecting rod 9 is connected to the support rod 10. After the connecting rod 9 is connected to the support rod 10, the capture plate 502 is fixed, so that the capture plate 502 can remain stable when the fine grinding platform 4 rotates. In this way, the coarse machine-made sand that falls on the fine grinding platform 4 can be automatically put into the capture plate 502 through the rotation of the fine grinding platform 4, and the machine-made sand with a smaller particle size is formed under the grinding action of the fine grinding piece.

[0061] The connecting rod 9 is connected to the supporting rod 10, so that when the fine grinding platform 4 rotates, the capture plate 502 connected to the other end of the connecting rod 9 can rotate relative to the fine grinding platform 4, thereby capturing and grinding the coarse machine-made sand falling on the fine grinding platform 4.

[0062] In this embodiment, the cross-section of the capture plate 502 is set to be L-shaped, the grinding piece 504 is fixed at the center of the capture plate 502 through the rotating shaft 507, and the long side of the horizontal plate forming the bottom of the capture plate 502 is chamfered, so that the machine-made sand on the fine grinding platform 4 can be better captured onto the L-shaped capture plate 502.

[0063] A circular clamping plate 607 is provided on the lower surface of the fine grinding platform 4, and a fixing block 604 is sleeved on one end of the driving shaft 605 connected to the secondary bevel gear 603, and a circular arc clamping groove is provided on the fixing block 604 for slidingly engaging with the circular clamping plate 607. The circular arc clamping groove can keep the entire fine grinding platform 4 in a more stable state when rotating, thereby preventing a large amount of machine-made sand from falling off due to the large shaking of the device when crushing rock raw materials.

[0064] Working principle: During the operation of the device, the rock raw material is firstly put into the opening above the stone crushing sleeve 2. Under the mutual extrusion between the inner wall of the stone crushing sleeve 2 and the conical deflection crushing head 3, the rock raw material is quickly ground into coarse machine-made sand. As the conical deflection crushing head 3 rotates continuously, when the gap between the inner wall of the stone crushing sleeve 2 and the conical deflection crushing head 3 becomes larger next time, the machine-made sand that has been squeezed and crushed falls from the gap to the fine grinding platform 4. The machine-made sand that falls on the fine grinding platform 4 generates centrifugal force when the fine grinding platform 4 rotates. The machine-made sand with larger particles is thrown to the outermost circle area of ​​the fine grinding platform 4, and the machine-made sand with smaller particles is thrown to the inner circle area of ​​the fine grinding platform 4. Through the centrifugal action of the fine grinding platform 4, the machine-made sand of different particle sizes is roughly classified, and then the machine-made sand is further ground by the fine grinding assembly 5 arranged on the fine grinding platform 4. Since the grinding thread gap on the grinding piece 504 close to the inner circle of the fine grinding platform 4 is the smallest, it can grind the machine-made sand with a smaller particle size. The grinding piece 504 on the outer circle is set to a grinding thread with a larger gap, and grinds the machine-made sand with a larger particle size. During grinding, due to the rotational force of the grinding thread, the machine-made sand that has been ground is fed to the center of the fine grinding platform 4, so that the machine-made sand of different particle sizes can eventually be ground into qualified machine-made sand by the grinding piece 504 on the inner circle. After the machine-made sand is ground to a qualified standard, it flows out from the gap between the capture plate 502 and the fine grinding platform 4 and is no longer captured by the capture plate 502. The machine-made sand that falls into the mixing tank 1 is mixed with other concrete raw materials for stirring, and the stirred concrete is discharged through the discharge baffle 8.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. Integrated equipment for machine-made sand preparation and concrete production, Features: The invention comprises a mixing pool (1), a crushing sleeve (2) is arranged above the mixing pool (1), and a conical deflecting crushing head (3) is arranged in the inner cavity of the crushing sleeve (2). A fine grinding platform (4), the fine grinding platform (4) is arranged at the opening below the stone crushing sleeve (2), the fine grinding platform (4) is provided with a fine grinding component (5) that can rotate around the center of the fine grinding platform (4), the fine grinding component (5) comprises a capture plate (502), and a rotatable rotating shaft (507) is fixed above the capture plate (502), and a grinding piece (504) whose grinding accuracy gradually decreases from the center of the fine grinding platform (4) to the outer circle is arranged on the rotating shaft (507), and a gap is provided between the capture plate (502) and the upper surface of the fine grinding platform (4), A driving assembly (6), wherein the driving assembly (6) comprises a rotating truncated table (601), wherein the rotating truncated table (601) is arranged concentrically with the fine grinding platform (4) and is arranged below the fine grinding platform (4); and an agitator is arranged below the rotating truncated table (601).

2. The integrated equipment for preparing machine-made sand and producing concrete according to claim 1, Features: The number of grinding parts (504) arranged on the rotating shaft (507) is several, and the grinding parts (504) are provided with grinding threads with the same pitch. The grinding thread pitch on the grinding part (504) located at the center of the fine grinding platform (4) is the smallest, and the grinding thread pitch on the grinding part (504) located at the outermost edge of the fine grinding platform (4) is the largest. Several grinding parts (504) are connected in series through the rotating shaft (507), and a circular baffle (506) is provided on the rotating shaft (507) located at the outermost circle of the fine grinding platform (4).

3. The integrated equipment for preparing machine-made sand and producing concrete according to claim 2, Features: Driver 1 (503) and driver 2 (501) are respectively arranged at the two ends of the rotating shaft (507), and a coupling (505) is arranged at the center of the rotating shaft (507). The rotating shaft (507) at the two ends of the coupling (505) is driven to rotate by driver 1 (503) and driver 2 (501) respectively.

4. The integrated equipment for preparing machine-made sand and producing concrete according to claim 1, Features: The driving assembly (6) further comprises a main bevel gear (602) arranged between the rotating truncated table (601) and the fine grinding platform (4), the main bevel gear (602) being meshed with at least three auxiliary bevel gears (603), the auxiliary bevel gears (603) being provided with a driving shaft (605), and the other end of the driving shaft (605) being connected to a driving box (606).

5. The integrated equipment for preparing machine-made sand and producing concrete according to claim 1, Features: A gap is left between the inner wall surface of the stone crushing sleeve (2) and the conical deflection crushing head (3), the center line of the conical deflection crushing head (3) deviates from the center line of the stone crushing sleeve (2), and when the conical deflection crushing head (3) rotates, the gap between the inner wall of the stone crushing sleeve (2) in the circumferential direction changes continuously.

6. The integrated equipment for preparing machine-made sand and producing concrete according to claim 5, Features: The outer wall of the stone crushing sleeve (2) is provided with a limiting ring (11), and the stone crushing sleeve (2) is fixed by the limiting ring (11). The outer ring of the limiting ring (11) is connected to a spraying plate (12), and the other end of the spraying plate (12) is connected to a support rod (10), and the support rod (10) is fixed on the side wall of the stirring tank (1).

7. The integrated equipment for preparing machine-made sand and producing concrete according to claim 6, Features: The spray plate (12) is provided with a liquid spray hole, which is connected to a water supply device. When concrete is being mixed, corresponding water is sprayed into the mixing tank (1) through the liquid spray hole for mixing.

8. The integrated equipment for preparing machine-made sand and producing concrete according to claim 1, Features: The bottom of the stirring pool (1) is supported by a plurality of support columns (15), and a discharge port (7) is provided at the bottom of the stirring pool (1), wherein the discharge port (7) is provided with a discharge baffle (8) that can be rotatably opened and closed.

9. The integrated equipment for preparing machine-made sand and producing concrete according to claim 6, Features: A connecting rod (9) extends from the capture plate (502) toward the outer circle of the fine grinding platform (4), and the end of the connecting rod (9) is connected to a support rod (10).

10. The integrated equipment for preparing machine-made sand and producing concrete according to claim 4, Features: A circular clamping plate (607) is arranged on the lower surface of the fine grinding platform (4); a fixing block (604) is sleeved on one end of the driving shaft (605) connected to the secondary bevel gear (603); and a circular arc clamping groove is arranged on the fixing block (604) for slidingly clamping with the circular clamping plate (607).

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