Integrated concrete mixing plant and preparation method of concrete

Abstract

The invention discloses an integrated concrete mixing plant, which belongs to the field of concrete equipment and comprises a cement bin body, a central control room and the like which are integrated into a whole, a blanking bin is arranged at the bottom of the cement bin body; the cement slurry prefabricating and dust removing mechanism comprises a prefabricating stirrer, a dust removing water tank and an additive adding mechanism; the discharging bin conveys materials to a discharging pipe through an auger conveying mechanism, and the discharging pipe is connected with a feeding port of the prefabricated stirring machine. A cement slurry discharge port is formed in the bottom of the prefabricated stirrer and is connected to a terminal stirring device through a slurry conveying pipe; the aggregate weighing and storing device is used for storing and weighing aggregate; the material conveying belt mechanism is used for conveying the aggregate discharged by the weighing and storing mechanism into the terminal stirring device; and baffles are arranged outside the cement bin body, the aggregate weighing and storing device and the terminal stirring device for sealing. The invention has the advantages of less required auxiliary equipment, high integration degree, energy conservation, environmental protection, low manufacturing cost, low transportation cost and the like.

Description

Technical Field

[0001] The present invention relates to the field of concrete equipment, and relates to an integrated concrete mixing plant and a method for preparing concrete. Background Art

[0002] Conventional concrete mixing plants mainly consist of five major systems such as a mixing main machine, a material weighing system, a material conveying system, a material storage system, and a control system, and other auxiliary facilities. Usually, these devices are connected in series or assembled in a certain way for use, which has the problems of large floor area and the need to build cumbersome auxiliary facilities such as a foundation platform.

[0003] To solve this problem, the applicant proposed a foldable modular concrete mixing plant with the publication number of CN117601272A. This invention integrates aggregate weighing and transmission, and integrates powder materials (cement and fly ash). The two are combined for use. This invention is assembled from multiple modular main bodies, which is convenient for the overall rapid assembly and disassembly, and has the advantage of being easy to transport, meeting various transportation requirements; and this invention has complete functions, meeting the requirements of all the work of a conventional mixing plant, and also has the advantages of less floor area, etc. Although this invention can effectively solve problems such as the large space occupied by conventional concrete mixing plants, this invention consists of a series of modules such as a main body module, a cement silo module, a fly ash silo module, and a weighing module. The preparation method is still the traditional one-step method, that is, cement, aggregate, admixture, water, etc. are put into a terminal mixer for mixing. Due to the large number of components, it is not very convenient for transportation, and the transportation cost is also relatively high. In addition, the operation of the equipment also requires more conveying equipment, consuming more energy.

[0004] Therefore, it is necessary to propose an integrated concrete mixing plant to solve the problems existing in the prior art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an integrated concrete mixing plant in view of the deficiencies in the background art. This mixing plant divides the traditional concrete preparation into two steps, effectively solving the problems of dust and a large number of auxiliary devices, and has the advantages of high integration, energy conservation and environmental protection, and lower cost.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: an integrated concrete mixing station, including an integrated cement silo, an aggregate weighing and storage device, a material conveyor belt mechanism, a cement slurry prefabrication dust removal mechanism, a terminal mixing device and a central control room; the bottom of the cement silo is a lower material bin; the cement slurry prefabrication dust removal mechanism includes a prefabricated mixer, a dust removal water tank and an admixture adding mechanism; the top of the prefabricated mixer is connected to an exhaust pipe and a water inlet pipe, and the exhaust pipe and the water inlet pipe are both extended into the dust removal water tank; the water inlet pipe is provided with a water pump; the lower material bin is connected to a lower material bin through a Jiaolong conveying mechanism The material is transferred to a discharge pipe, which is connected to the feed port of the prefabricated mixer; a cement slurry discharge port is provided at the bottom of the prefabricated mixer, and the cement slurry discharge port is connected to the terminal mixing device through a slurry delivery pipe, and a feed pump is provided on the slurry delivery pipe; the aggregate weighing and storage device is used for storing and weighing aggregates, and it comprises a supporting frame and a weighing and storage mechanism arranged in the supporting frame; the material conveying belt mechanism is used for conveying the aggregates discharged by the weighing and storage mechanism to the terminal mixing device; the cement silo, the aggregate weighing and storage device and the terminal mixing device are all sealed with baffles on the outside.

[0007] Preferably, a discharge pipe is provided at the bottom of the discharge bin, and a plurality of discharge ports are evenly opened on the discharge pipe; a feed opening corresponding to the discharge port is opened at the top of the feed barrel of the Jiaolong conveying mechanism, and the feed barrel of the Jiaolong conveying mechanism is placed in the discharge pipe, and a screw is provided at one end of the Jiaolong conveying mechanism, and one end of the screw is connected to an adjusting nut; the adjusting nut is fixedly mounted on the support frame, and the screw is adjusted to move horizontally left and right in the adjusting nut, thereby controlling the feed barrel to move back and forth left and right in the discharge pipe, thereby controlling the discharge port and the feed opening to overlap or stagger, thereby controlling the discharge or closing of the material.

[0008] Preferably, the exhaust pipe of the cement silo body extends into the dust removal water tank.

[0009] Preferably, the material conveyor belt mechanism comprises an aggregate output belt mechanism, a transfer trough and an aggregate input belt mechanism which are connected in sequence.

[0010] Preferably, the weighing and storing mechanism comprises at least a primary aggregate weighing device, a secondary aggregate weighing device and a tertiary aggregate weighing device.

[0011] Preferably, the admixture adding mechanism comprises an admixture storage box, an admixture weigher and an admixture conveying pipeline.

[0012] Preferably, the terminal stirring device includes a terminal mixer and a protective frame arranged outside the terminal mixer.

[0013] Preferably, the cement silo body, the aggregate weighing and storage device, the cement slurry prefabrication dust removal mechanism, and the terminal mixing device are all retractable and foldable structures.

[0014] The present invention also discloses a method for preparing concrete. This method is based on the above integrated concrete mixing station and includes the following steps:

[0015] (1) First, put cement into the prefabricated mixer, then add a certain amount of water and admixture into the prefabricated mixer, and start the prefabricated mixer to stir the cement, admixture and water evenly to prefabricate cement slurry;

[0016] (2) Weigh the required aggregate through the weighing mechanism, and transport the weighed aggregate to the terminal mixing device through the conveyor belt mechanism; then input the cement slurry prepared in step (1) into the terminal mixing device, start the terminal mixing device, and stir the aggregate and the cement slurry for a certain period of time to obtain concrete.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The integration degree of the present invention is high. By integrating common equipment in a concrete mixing station, such as a cement silo body, an aggregate weighing and storage device, a material conveyor belt mechanism, a cement slurry prefabrication dust removal mechanism, a terminal mixing device, and a central control room, the various components are combined skillfully, and can be combined into a complete device with complete functions, fully capable of concrete production and manufacturing;

[0019] 2. The present invention divides the traditional concrete preparation process from one-step manufacturing into two steps. Specifically, cement slurry is prepared in advance (cement, water and admixture are prepared in advance); then the prepared cement slurry and aggregate are respectively transported to the terminal mixing device for preparation to obtain concrete. The entire preparation process can effectively inhibit dust flying. Specifically, it is achieved as follows: First, the admixture, water and cement are pre-prepared by the cement slurry prefabrication dust removal mechanism, and the equipment can remove the generated dust through the dust removal water tank, reducing the dust-raising link of cement dust. Moreover, in addition to dust removal, the dust removal water tank also has a water storage function. Compared with the previous equipment that requires two water storage tanks in the mixing station, one water storage tank is saved, and the function remains unchanged; Second, since the outer parts of the aggregate weighing and storage device, the cement slurry prefabrication dust removal mechanism, and the terminal mixing device of the present invention are sealed with baffles, the weighing and transportation of the aggregate are carried out in a closed space, effectively avoiding the dust-raising link of the aggregate during transportation. Through the above two links, the flying of dust is reduced;

[0020] 3. The present invention has the advantages of high efficiency and energy conservation. In the cement conveying link, after being discharged by the auger conveying mechanism, the material is conveyed by flowing from top to bottom through the feeding pipe, saving at least the consumption of one conveying pump. Moreover, due to the high degree of integration of the equipment, the material conveying distance is short, with few transfers, and the length of the conveying belt can be greatly shortened. Therefore, the power required for operation is greatly reduced. Compared with the traditional mixing station that requires at least 150 Kw, the present invention only needs 80 Kw to complete the operation of the equipment, thus achieving the effect of energy conservation;

[0021] 4. The present invention has a low cost. Due to the high degree of integration of the present invention, the costs of equipment such as steel, water tanks, and conveying mechanisms are saved, thus greatly reducing the construction cost of the equipment;

[0022] 5. The present invention has a low transportation cost. Due to the high degree of integration of the present invention, many equipment are omitted. Therefore, compared with the traditional mixing station that requires at least 2 or more vehicles to complete transportation, the present invention only needs one vehicle to complete transportation;

[0023] 6. The present invention has a fast installation speed and a low installation cost. Since the present invention is integrated and can be telescoped and folded without disassembling each component, it is convenient for quick installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall three-dimensional view of the integrated integrated concrete mixing station of the present invention (where the mixing station is in the extended state);

[0025] Figure 2 is Figure 1 the front view of;

[0026] Figure 3 is Figure 2 the right view of;

[0027] Figure 4 is Figure 3 the A-A sectional view of;

[0028] Figure 5 is the overall three-dimensional view of the integrated integrated concrete mixing station of the present invention (where the mixing station is in the folded state);

[0029] Figure 6 is Figure 5 the right view of;

[0030] Figure 7 is Figure 6 the B-B sectional view of;

[0031] Figure 8 is the structural schematic diagram of the cement slurry prefabricated dust removal mechanism of the present invention;

[0032] Figure 9Schematic structural diagram of the blanking bin and the auger conveyor mechanism of the present invention used in cooperation;

[0033] Figure 10 Schematic structural diagram of the discharge pipe and the auger conveyor mechanism of the present invention used in cooperation, wherein the blanking port is in a closed state;

[0034] Figure 11 Schematic structural diagram of the discharge pipe and the auger conveyor mechanism of the present invention used in cooperation, wherein the blanking port is in an open state. Specific embodiments

[0035] The following further describes the specific embodiments of the present invention with reference to the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation on the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] As Figures 1 to 11 shown, an integrated concrete mixing plant of the present invention specifically includes an integrated cement silo body 1, an aggregate weighing and storage device 2, a material conveyor belt mechanism 3, a cement slurry prefabricated dust removal mechanism 4, a terminal mixing device 5, and a central control room 6; by integrating the above main core equipment of the mixing plant into one, the various components are cleverly combined to form a complete equipment with complete functions and fully capable of concrete production and manufacturing. While the present invention has a perfect concrete production function, it also greatly reduces the volume of the concrete mixing plant and enables it to have more advanced functions.

[0037] At the bottom of the cement silo body 1 is the blanking bin 11; the prefabricated dust removal mechanism 4 for cement slurry includes a prefabricated mixer 41, a dust removal water tank 42 and an admixture adding mechanism 43; an exhaust pipe 44 and a water inlet pipe 45 are connected to the top of the prefabricated mixer 41, and both the exhaust pipe 44 and the water inlet pipe 45 extend into the dust removal water tank 42; a water pump (omitted in the figure) is provided on the water inlet pipe 45; during use, the prefabricated mixer 41 is installed in the protective frame body. There are tracks inside the mixing station, and track wheels are provided at the bottom of the protective frame body, and the track wheels are matched with the tracks. During use, the prefabricated mixer 41 and the dust removal water tank 42 are respectively placed at both ends of the track. When folding the mixing station, the dust removal water tank 42 is removed, and the prefabricated mixer 41 is moved to the position of the dust removal water tank 42, so that the internal equipment of the mixing station occupies more space and is convenient for folding from the upper layer to the lower layer; the blanking bin 11 transports materials to the receiving blanking pipe 13 through the auger conveying mechanism 12, and the blanking pipe 13 is connected to the feeding port of the prefabricated mixer 41; the downward design of the blanking pipe 13 of the present invention enables the cement powder to automatically fall into the prefabricated mixer 41 after being output by the auger conveying mechanism 12, eliminating the conveying mechanism and saving manufacturing costs; a cement slurry discharge port 411 is provided at the bottom of the prefabricated mixer 41, and the cement slurry discharge port 411 is connected to the terminal mixing device 5 through a slurry conveying pipe, and a feeding pump (omitted in the figure) is provided on the slurry conveying pipe; the cement silo body 1 of the present invention has the same weighing function as the patent applied online. For details, refer to the prior application for an invention patent with the application number: 2024118560853 and the name: A Multifunctional Powder Storage and Slurry Prefabrication Device, which is exactly the same. The aggregate weighing and storage device 2 is used for storing and weighing aggregates. It includes a support frame 21 and a weighing and storage mechanism 22 arranged inside the support frame 21. Specifically, the weighing and storage mechanism 22 at least includes a primary aggregate weighing device, a secondary aggregate weighing device and a tertiary aggregate weighing device; the material conveyor belt mechanism 3 is used for conveying the aggregates discharged from the weighing and storage mechanism 22 into the terminal mixing device 5. The material conveyor belt mechanism 3 of the present invention includes an aggregate output belt mechanism, a transfer chute and an aggregate input belt mechanism connected in sequence. It should be noted here that the weighing and storage mechanism 22 and the material conveyor belt mechanism 3 of the present invention are the same as the utility model patent applied online with the publication number CN 220179730 U and the name: A Batching System, so they will not be elaborated here; the outsides of the cement silo body 1, the aggregate weighing and storage device 2 and the terminal mixing device 5 are all sealed with baffles (the sealing method is as Figure 1 shown).

[0038] Since the control switches of traditional auger conveying mechanisms are mostly gate valves or butterfly valves, due to their special structures, if components of the auger need to be replaced during use and there is material stored inside the auger, this operation cannot be carried out at this time. To solve this problem, the present invention further optimizes the feeding switch of the auger conveying mechanism. As Figures 9 - 11As shown, the bottom of the discharge bin 11 of the present invention is provided with a discharge pipe 111, and a plurality of discharge ports 112 are evenly opened on the discharge pipe 111; the top of the feed barrel 121 of the Jiaolong conveying mechanism 12 is provided with a feed opening 122 corresponding to the discharge port 112, and the feed barrel 121 of the Jiaolong conveying mechanism 12 is placed in the discharge pipe 111, and one end of the Jiaolong conveying mechanism 12 is provided with a screw 123, and one end of the screw 123 is connected to the adjusting nut 7; the adjusting nut 7 is fixedly mounted on the support frame, and the screw 123 is adjusted to move horizontally left and right in the adjusting nut 7, thereby controlling the feed barrel 121 to move back and forth left and right in the discharge pipe 111, thereby controlling the overlap or stagger of the discharge port 112 and the feed opening 122, and thereby controlling the discharge or closing of the material. Through this design, the feed barrel 121 of the Jiaolong conveying mechanism is not easy to be blocked, which is conducive to the opening and closing of the material.

[0039] Since the cement silo 1 is also prone to generate dust during the cement loading process, the present invention is consistent with the patent applied for online, and also extends the exhaust pipe of the cement silo 1 to the dust removal water tank 42. The dust generated by the cement silo 1 during the loading process is also input into the dust removal water tank 42 through the exhaust pipe for removal.

[0040] The additive adding mechanism 43 of the present invention is used for adding additives. Specifically, the additive adding mechanism 43 includes an additive storage box 431 , an additive weigher 432 and an additive delivery pipeline 433 .

[0041] The terminal stirring device 5 of the present invention includes a terminal stirring machine 51 and a protective frame 52 arranged outside the terminal stirring machine 51 .

[0042] Of course, in order to make the mixing station of the present invention consistent with the previously applied patent, it also has the folding and telescopic function, see Figures 5 to 7 As shown, the cement silo 1, aggregate weighing storage device 2, cement slurry prefabricated dust removal mechanism 4 and terminal mixing device 5 of the present invention are all retractable and foldable structures. This structure is consistent with the prior application of this application, see publication number: CN117601272A, title: A foldable modular concrete mixing station, so it will not be repeated here. In this way, when transporting, it is convenient to fold the whole to reduce the volume, which is convenient for transportation, and the equipment can be stretched together when stretched, which is convenient for quick installation.

[0043] The specific operation of the present invention is as follows: When the device of the present invention needs to be used, Figure 1Assemble each device in the following manner, then input a certain amount of cement into the cement silo 1, feed materials into the aggregate weighing and storage device 2, and load in aggregates (such as sand, stones, etc.). When preparing concrete, first prepare the cement slurry. Specifically, start the auger conveyor mechanism 12, and the cement enters the feed pipe 13 through the auger conveyor mechanism 12 and then is input into the prefabricated mixer 41 from top to bottom. The dust generated during the feeding process enters the dust removal water tank 42 through the exhaust pipe 44 and finally forms a cement-water mixture with water, and the dust is absorbed through the dust removal water tank 42; when the amount of cement in the prefabricated mixer 41 reaches the required amount, start the water pump to pump the water in the dust removal water tank 42 into the prefabricated mixer 41, then start the admixture adding mechanism 43 to add admixture into the prefabricated mixer 41. When these three raw materials are complete, start the prefabricated mixer 41 to stir for a certain period of time to prefabricate the cement slurry. At this time, the aggregates weighed by the aggregate weighing and storage device 2 are successively conveyed to the terminal mixing device 5 by the material conveyor mechanism 3. When the aggregate conveying is completed, start the feed pump to input the cement slurry into the terminal mixing device 5 again, and then start the terminal mixing device 5 to stir for a certain period of time to finally prepare the required concrete.

[0044] The invention divides the traditional one-step preparation of concrete into two steps, which specifically include the following steps:

[0045] (1) First, put cement into the prefabricated mixer, then add a certain amount of water and admixture into the prefabricated mixer, and start the prefabricated mixer to stir the cement, admixture and water evenly to prefabricate the cement slurry;

[0046] (2) Weigh the required aggregates through the weighing mechanism and convey the weighed aggregates to the terminal mixing device through the conveyor mechanism; then input the cement slurry prepared in step 1 into the terminal mixing device, start the terminal mixing device, and stir the aggregates and the cement slurry for a certain period of time to obtain the concrete.

[0047] Through the above two steps, the problem of dust and dust raising generated during the processing of the mixing station is effectively avoided.

[0048] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. An integrated concrete mixing plant, characterized in that: The invention comprises an integrated cement silo (1), an aggregate weighing and storage device (2), a material conveyor belt mechanism (3), a cement slurry prefabrication dust removal mechanism (4), a terminal mixing device (5) and a central control room (6); the bottom of the cement silo (1) is a material discharge silo (11); the cement slurry prefabrication dust removal mechanism (4) comprises a prefabricated mixer (41), a dust removal water tank (42) and an admixture adding mechanism (43); the top of the prefabricated mixer (41) is connected with an exhaust pipe (44) and a water inlet pipe (45), and the exhaust pipe (44) and the water inlet pipe (45) both extend into the dust removal water tank (42); the water inlet pipe (45) is provided with a water pump; the material discharge silo (11) is transported to the material discharge pipe (43) via a dragon conveying mechanism (12); 13), the feed pipe (13) is connected to the feed port of the prefabricated mixer (41); the bottom of the prefabricated mixer (41) is provided with a cement slurry discharge port (411), the cement slurry discharge port (411) is connected to the terminal mixing device (5) through a slurry delivery pipe, and the slurry delivery pipe is provided with a delivery pump; the aggregate weighing and storage device (2) is used to store and weigh aggregates, and it includes a support frame (21) and a weighing and storage mechanism (22) arranged in the support frame (21); the material conveyor belt mechanism (3) is used to transport the aggregate discharged by the weighing and storage mechanism (22) to the terminal mixing device (5); the outside of the cement silo (1), the aggregate weighing and storage device (2) and the terminal mixing device (5) are all sealed with baffles.

2. The integrated concrete mixing plant according to claim 1, characterized in that: A discharge pipe (111) is provided at the bottom of the discharge bin (11), and a plurality of discharge ports (112) are evenly provided on the discharge pipe (111); a feed opening (122) corresponding to the discharge port (112) is provided at the top of the feed cylinder (121) of the dragon conveying mechanism (12); the feed cylinder (121) of the dragon conveying mechanism (12) is placed in the discharge pipe (111); a screw rod (123) is provided at one end of the dragon conveying mechanism (12), and one end of the screw rod (123) is connected to an adjusting nut (7); the adjusting nut (7) is fixedly mounted on a support frame, and the screw rod (123) is adjusted to move horizontally left and right in the adjusting nut (7), thereby controlling the feed cylinder (121) to move back and forth left and right in the discharge pipe (111), thereby controlling the discharge port (112) and the feed opening (122) to overlap or stagger, thereby controlling the discharge or closing of materials.

3. The integrated concrete mixing plant according to claim 1 is characterized in that: The exhaust pipe of the cement silo body (1) extends into the dust removal water tank (42).

4. The integrated concrete mixing plant according to claim 1 is characterized in that: The material conveying belt mechanism (3) comprises an aggregate output belt mechanism, a transfer trough and an aggregate input belt mechanism which are connected in sequence.

5. The integrated concrete mixing plant according to claim 1, characterized in that: The weighing and storing mechanism (22) comprises at least a primary aggregate weighing device, a secondary aggregate weighing device and a tertiary aggregate weighing device.

6. The integrated concrete mixing plant according to claim 1, characterized in that: The admixture adding mechanism (43) comprises an admixture storage box (431), an admixture weigher (432) and an admixture conveying pipeline (433).

7. The integrated concrete mixing plant according to claim 1, characterized in that: The terminal stirring device (5) comprises a terminal stirring machine (51) and a protective frame (52) arranged outside the terminal stirring machine (51).

8. The integrated concrete mixing plant according to any one of claims 1 to 7, characterized in that: The cement silo (1), the aggregate weighing and storage device (2), the cement slurry prefabrication dust removal mechanism (4) and the terminal stirring device (5) are all retractable and foldable structures.

9. A method for preparing concrete, the method being based on the integrated concrete mixing station according to any one of claims 1 to 7, comprising the following steps: (1) Put cement into a prefabricated mixer in advance, then add a certain amount of water and admixture into the prefabricated mixer, start the prefabricated mixer to evenly mix the cement, admixture and water to prefabricate cement slurry; (2) Weighing the required aggregates through a weighing mechanism, and transmitting the weighed aggregates to a terminal mixing device through a conveyor belt mechanism; then inputting the cement slurry prepared in step (1) into the terminal mixing device, starting the terminal mixing device, and mixing the aggregates and cement slurry for a certain period of time to obtain concrete.

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