Raw material accurate metering tool for mass concrete mix proportion optimization test

Abstract

The utility model discloses a raw material accurate metering tool for a mass concrete mix proportion optimization test, which mainly comprises a shell, a blanking plate, a small screening plate, a receiving plate, a large screening plate and a metering piece are sequentially arranged in the shell, and aggregates with small and large particle sizes in aggregates are screened out through the small screening plate and the large screening plate. Therefore, the particle size of the aggregate which finally falls into the metering part to be metered meets the requirement, the metering result of the aggregate is more accurate, and the test result is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of concrete mixing, especially to a raw material accurate metering tool for mass concrete mixing ratio optimization test. BACKGROUND

[0002] Mass concrete is a kind of building material widely used in modern construction, mainly applied in high-rise buildings, water conservancy projects, bridge engineering and other fields, characterized by large volume, small surface coefficient, concentrated cement hydration heat release, and fast internal temperature rise. These characteristics make it necessary to pay special attention to temperature control and crack prevention during the construction process of mass concrete. The characteristics and application fields of mass concrete determine its importance in ensuring engineering quality and safety.

[0003] Therefore, in order to obtain a concrete mixing scheme with excellent performance, convenient construction and reasonable cost, to meet the needs of engineering projects and ensure construction quality, mass concrete mixing ratio optimization test is needed to confirm the mixing ratio of mass concrete that meets the requirements, wherein the raw materials of mass concrete mainly include cement, aggregate (sand and stone with a certain range of particle size), admixture, additive and water. Due to the large volume and high strength requirement of mass concrete, higher accuracy is required for the mixing ratio. Therefore, the measurement result of the raw materials in the mass concrete mixing ratio optimization test needs to be more accurate.

[0004] In the prior art, when measuring the raw materials, an electronic scale or other measuring tool is used to weigh and measure the raw materials of mass concrete to ensure that the measurement result of the raw materials is relatively accurate. The main function of measurement is to confirm the use of raw materials through weighing and other methods. However, there are still some problems that need to be improved:

[0005] 1. When measuring solid raw materials, especially aggregate, there may be sand and stone with large or small particle size in the aggregate, which will affect the quality of the concrete produced subsequently;

[0006] During the test, multiple control groups are usually set up for comparison and data collection. If there are sand and stone with large or small particle size in the aggregate, it may lead to uneven weight distribution of the aggregate, which in turn may result in the same quality but different number of sand and stone in each control group during the measurement of the aggregate, thus making it impossible to accurately measure the aggregate, resulting in deviation in the amount of aggregate used, and the test personnel cannot immediately find out, thus leading to deviation or inaccuracy in the final test results.

[0007] Therefore, there is an urgent need for a measuring tool that can accurately measure the aggregate. UTILITY MODEL CONTENT

[0008] The purpose of this utility model is to provide a precise measuring tool for raw materials in large-volume concrete mix proportion optimization tests, which solves the technical problem of deviation in aggregate measurement results caused by the presence of sand and gravel with large or small particle sizes.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A precise raw material metering tool for large-volume concrete mix proportion optimization experiments includes a shell, an inclined material drop plate on the upper side wall, a small sieve plate for removing small-diameter aggregates, a receiving plate for receiving small-diameter aggregates, a large sieve plate for large-diameter aggregates, and a metering component arranged sequentially on the lower side of the material drop plate. The feeding end of the small sieve plate is located on the lower side of the material drop plate, and the discharge end is lower than the feeding end. A material drop port is provided between the discharge end of the small sieve plate and the inner wall of the shell. The large sieve plate is located on the lower side of the material drop port. Vibration components are provided on the lower sides of both the large sieve plate and the small sieve plate.

[0011] In some embodiments, the housing includes a first housing, a second housing, a third housing, and a fourth housing that are detachably connected and interconnected in a vertical direction, a material discharge plate is disposed in the first housing, a small sieve plate and a receiving plate are disposed in the second housing, a large sieve plate is disposed in the third housing, and a metering element is disposed in the fourth housing.

[0012] In some embodiments, a first frame is provided inside the second housing, a small sieve plate is disposed on the upper surface of the first frame, a discharge port is disposed between one end of the first frame and the inner wall of the second housing, and a receiving plate is disposed on the lower side of the first frame.

[0013] In some embodiments, the first frame has a first through hole at its center, and the small screen plate has a plurality of first screening holes, all of which are located on the vertical upper side of the first through hole.

[0014] In some embodiments, the outer walls of the other three sides of the first frame are all in contact with the inner wall of the second housing. The housing sidewall is provided with a cleaning port, which is located on one side of the receiving plate and has a cover plate on its surface.

[0015] In some embodiments, a first fixing plate is provided on the side end of the small screen plate, and a first insertion hole adapted to the small screen plate is provided on one side wall surface of the second housing. When the side end of the small screen plate opposite to the first fixing plate is inserted into the second housing along the first insertion hole, the lower surface of the small screen plate is in contact with the upper surface of the first frame, and the first fixing plate is bolted to the side wall surface of the second housing.

[0016] In some embodiments, the first frame is provided with a first T-groove on one end surface near the material outlet and the opposite end thereto. The lower surface of the small screen plate is provided with first limiting strips on both sides. The openings of the two first T-grooves are connected to the first insertion hole and are respectively adapted to the two first limiting strips. When the other end of the small screen plate is inserted into the second housing along the first insertion hole, the two first limiting strips are respectively inserted into the two first T-grooves.

[0017] In some embodiments, a second frame is provided inside the third housing, and the four sides of the second frame are fixedly connected to and fitted to the four inner walls of the third housing, respectively, and a large screen plate is disposed on the upper surface of the second frame.

[0018] In some embodiments, a second fixing plate is provided on the side end of the large screen plate, and a second insertion hole adapted to the large screen plate is provided on one side wall surface of the third housing. When the side end of the large screen plate opposite to the second fixing plate is inserted into the third housing along the second insertion hole, the lower surface of the large screen plate is in contact with the upper surface of the second frame, and the second fixing plate is bolted to the side wall surface of the third housing.

[0019] In some embodiments, the second frame is provided with a second T-shaped groove on both sides, and the lower surface of the large screen plate is provided with a second limiting strip on both sides. The openings of the two second T-shaped grooves are connected to the second insertion hole and are respectively adapted to the two second limiting strips. When the other side of the large screen plate is inserted into the third housing along the second insertion hole, the two second limiting strips are respectively inserted into the two second T-shaped grooves.

[0020] Compared with the prior art, the advantages of this utility model are:

[0021] In this invention, small and large aggregate particles are screened out using a small sieve plate and a large sieve plate, so that the aggregate particles that finally fall into the metering device for measurement all meet the requirements, thereby making the aggregate measurement results more accurate and ensuring the accuracy of the test results. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front cross-sectional view of the precise raw material metering tool used in the large-volume concrete mix proportion optimization test according to an embodiment of this application.

[0024] Figure 2This is a front cross-sectional view of the precise raw material metering tool used in the large-volume concrete mix proportion optimization test according to an embodiment of this application, without the installation of the small sieve plate, the large sieve plate, and the metering component.

[0025] Figure 3 This is a frontal view of the precise raw material metering tool used in the large-volume concrete mix proportion optimization test according to an embodiment of this application, without the small sieve plate and the large sieve plate installed.

[0026] Figure 4 This is a front view of the precise metering tool for raw materials used in the large-volume concrete mix proportion optimization test according to an embodiment of this application.

[0027] Figure 5 This is a side view of the precise measuring tool for raw materials used in the large-volume concrete mix proportion optimization test according to an embodiment of this application;

[0028] Figure 6 This is a top view schematic diagram of the precise raw material metering tool used in the large-volume concrete mix proportion optimization test according to an embodiment of this application;

[0029] Figure 7 This is a top view schematic diagram of the second shell of the precise metering tool for raw materials used in the large-volume concrete mix proportion optimization test according to an embodiment of this application;

[0030] Figure 8 This is a top view schematic diagram of the third housing of the precise metering tool for raw materials used in the large-volume concrete mix proportion optimization test according to an embodiment of this application;

[0031] Figure 9 This is a side view of the small sieve plate of the raw material precision metering tool used in the large-volume concrete mix proportion optimization test according to an embodiment of this application.

[0032] Figure 10 This is a side view of the large sieve plate of the raw material precision metering tool used in the large-volume concrete mix proportion optimization test according to an embodiment of this application.

[0033] Figure label:

[0034] 100 - Housing, 110 - First Housing, 111 - Feed Inlet, 120 - Second Housing, 121 - Cleaning Inlet, 122 - Cover Plate, 123 - First Insertion Hole, 130 - Third Housing, 131 - Second Insertion Hole, 140 - Fourth Housing, 141 - Assembly / Disassembly Port

[0035] 200-Blanking plate,

[0036] 300 - Small sieve plate, 310 - First sieve hole, 320 - First fixing plate, 330 - First limiting strip

[0037] 400 - Large screen material plate, 410 - Second fixing plate, 420 - Second limit bar

[0038] 500 - receiving plate, 510 - baffle plate

[0039] 600 - Measuring component, 610 - Protective layer, 620 - Side panel, 621 - Pull handle.

[0040] 700 - Vibrating component

[0041] 800 - First frame, 810 - First through hole, 820 - First T-slot

[0042] 900-Blanking port,

[0043] 1000 - Second frame, 1100 - Second T-slot, 1200 - Second through hole

[0044] 2000-Fixed protrusion,

[0045] 3000-strip groove,

[0046] 4000-Fixed Block. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0048] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0050] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0051] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0052] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0054] It should be understood that when measuring solid raw materials, especially aggregates, there may be sand and gravel with larger or smaller particle sizes in the aggregates, which will affect the quality of the concrete produced later.

[0055] During the experiment, multiple control groups are usually set up for comparison and data collection. If there are large or small particles of sand and gravel in the aggregate, it may lead to uneven weight distribution of the aggregate. As a result, when measuring the aggregate in each control group, there may be cases where the mass is the same but the amount of sand and gravel differs greatly. This makes it impossible to measure the aggregate accurately, resulting in deviations in the amount of aggregate used. The testers may not be able to detect this immediately, leading to deviations or inaccuracies in the final test results.

[0056] To address the aforementioned issues, this embodiment provides a precise raw material metering tool for large-volume concrete mix design optimization experiments. The tool mainly comprises a housing 100, within which, along a vertical direction, are sequentially arranged a material drop plate 200, a small sieve plate 300, a receiving plate 500, and a metering component 600. This device is primarily used for sieving aggregates, thereby ensuring more accurate aggregate metering, and can also accurately meter other different raw materials.

[0057] The housing 100 serves as the mounting base for the other components of the device and can be a rectangular or cylindrical structure. In this embodiment, the housing 100 is a rectangular body with a rectangular space inside for mounting the other components.

[0058] In this embodiment, as Figure 1 and Figure 6As shown, the upper side wall of the housing 100 is provided with an inclined dropping plate 200. Preferably, the top side of the dropping plate 200 is disposed on the upper side wall of the housing 100 and fixedly connected, and the bottom side of the dropping plate 200 is disposed inside the housing 100. The dropping plate 200 is disposed close to the side wall of the housing 100, and the distance between the bottom side of the dropping plate 200 and one of the side walls of the housing 100 is less than the distance between the top side of the dropping plate 200 and that side wall of the housing 100. The upper side wall of the housing 100 is provided with a feed inlet 111, and the feed inlet 111 is disposed between the top side of the dropping plate 200 and the side wall of the housing 100.

[0059] The inclined arrangement of the discharge plate 200 makes it easier for the aggregate to enter the housing 100 along the discharge plate 200.

[0060] In this embodiment, as Figure 1 As shown, the housing 100 is provided with a small sieve plate 300 for screening out small-diameter aggregates, a receiving plate 500 for receiving small-diameter aggregates, a large sieve plate 400 for receiving large-diameter aggregates, and a metering component 600 in sequence along the vertical direction downwards, and all of them are located below the discharge plate 200.

[0061] In this embodiment, as Figure 1 As shown, the feed end of the small sieve plate 300 is located below the discharge plate 200, so that the aggregate falls from the feed inlet 111 onto the small sieve plate 300. Specifically, the small sieve plate 300 is provided with a plurality of first sieve holes 310 arranged in sequence at intervals, which are used to screen out small-sized aggregates that do not meet the requirements, so that the particle size of the aggregate particles in the aggregate is uniform, thereby avoiding too much small-sized aggregate, which would affect the accuracy of aggregate measurement and the accuracy of subsequent concrete mix proportion tests.

[0062] Among them, such as Figure 1 As shown, the height of the discharge end of the small sieve plate 300 is lower than that of the feed end, so that the small sieve plate 300 is inclined inside the housing 100, and the inclination direction is opposite to that of the discharge plate 200, so that the aggregate can slide down along the small sieve plate 300. The receiving plate 500 is located on the lower side of the small sieve plate 300, and one end is fixedly connected to the inner wall of the housing 100, and the other end is located on the lower side of the discharge end of the small sieve plate 300, so that the small-diameter aggregates that are screened out by the small sieve plate 300 fall into the receiving plate 500 for collection through the first sieve hole 310.

[0063] In this embodiment, the receiving plate 500 is provided with a baffle 510 at one end below the discharge end of the small screen plate 300, so as to prevent the aggregate falling onto the receiving plate 500 from leaking out of the receiving plate 500.

[0064] A discharge port 900 is provided between the discharge end of the small sieve plate 300 and the inner wall of the housing 100. The discharge port 900 is located between the end of the receiving plate 500 with the baffle 510 and the inner wall of the housing 100. The large sieve plate 400 is located below the discharge port 900, so that the screened aggregate slides down the small sieve plate 300 to the discharge port 900 and then falls into the large sieve plate 400. The large sieve plate 400 is provided with a plurality of second screening holes arranged in sequence and at intervals to screen out aggregates with larger particle sizes that do not meet the requirements. Thus, the aggregates that meet the requirements fall into the metering device 600 through the second screening holes for weighing.

[0065] In this embodiment, the size of the first sieve hole 310 is consistent with the minimum particle size required for the aggregate, so that aggregate smaller than the minimum particle size is screened out through the first sieve hole 310 and into the receiving plate 500. The sieve size of the second sieve hole is consistent with the maximum particle size required for the aggregate, so that aggregate smaller than the maximum particle size falls into the weighing device through the second sieve hole for weighing. This ensures that the particle size of the aggregate passing through the small sieve plate 300 and the large sieve plate 400 meets the test requirements, thus making the aggregate measurement more accurate. As a result, the aggregate usage in subsequent tests is more accurate and will not have a significant impact on the quality of the concrete.

[0066] Both the large sieve plate 400 and the small sieve plate 300 are equipped with vibrating elements 700 on their lower sides. The vibrating elements 700 can be devices such as air hammers, electric push rods, and eccentric wheels. In this embodiment, the vibrating elements 700 are air hammers, and the hammering intervals are set to intermittently vibrate the small sieve plate 300 and the large sieve plate 400, thereby causing the small sieve plate 300 and the large sieve plate 400 to vibrate. This results in higher efficiency of aggregate sliding and screening, and avoids excessive aggregate accumulation.

[0067] In this embodiment, the small and large aggregate particles are screened out by the small sieve plate 300 and the large sieve plate 400, so that the aggregate particles that fall into the metering device 600 for measurement meet the requirements, thereby making the measurement results of the aggregate more accurate and ensuring the accuracy of the test results.

[0068] In some embodiments, such as Figures 1-3 As shown, the large screen plate 400 adopts an arc structure, with the outer side of the arc facing the weighing component. Multiple second screening holes are arranged sequentially and at intervals on the inner surface of the large screen plate 400, which makes the inner surface area of ​​the large screen plate 400 large, resulting in more screening holes. This allows for the screening of more aggregates and makes the aggregates entering the large screen plate 400 more dispersed, thus resulting in higher screening efficiency.

[0069] At the same time, the aggregate slides along the inner surface of the large screen plate 400 under the action of gravity and the vibrating element 700, thereby making the aggregate screening efficiency higher.

[0070] In this embodiment, the large screen plate 400 is located at the feed end below the discharge port 900 and is attached to the inner wall of the housing 100. It is inclined relative to the housing 100, and the inclination direction is opposite to that of the small screen plate 300. This makes it easier and faster for the aggregate to enter the inner surface of the arc of the large screen plate 400 along the feed end, thereby improving the screening efficiency.

[0071] The upper side of the feed end of the large screen plate 400 is equipped with a rubber pad to prevent the large screen plate 400 from being damaged by the aggregate.

[0072] In some embodiments, such as Figures 1-3 As shown, the housing 100 includes a first housing 110, a second housing 120, a third housing 130, and a fourth housing 140 that are detachably connected and interconnected in a vertical direction. A material discharge plate 200 is disposed in the first housing 110, a small sieve plate 300 and a receiving plate 500 are disposed in the second housing 120, a large sieve plate 400 is disposed in the third housing 130, and a metering component 600 is disposed in the fourth housing 140. Specifically, the tops of the four side walls of the fourth housing 140, the tops of the four side walls of the third housing 130, and the tops of the four side walls of the second housing 120 are all provided with strip-shaped grooves 3000, and the bottoms of the four side walls of the third housing 130, the bottoms of the four side walls of the second housing 120, and the bottoms of the four side walls of the first housing 110 are all provided with fixing protrusions 2000. Multiple fixing... The fixed protrusions 2000 are adapted to the multiple strip grooves 3000. In this embodiment, the fixed protrusions 2000 at the bottom of the four side walls of the first housing 110 are respectively inserted into the strip grooves 3000 at the top of the four side walls of the second housing 120, the fixed protrusions 2000 at the bottom of the four side walls of the second housing 120 are respectively inserted into the strip grooves 3000 at the top of the four side walls of the third housing 130, and the fixed protrusions 2000 at the bottom of the four side walls of the third housing 130 are respectively inserted into the strip grooves 3000 at the top of the four side walls of the fourth housing 140. This makes the installation between the first housing 110, the second housing 120, the third housing 130 and the fourth housing 140 relatively simple, and at the same time, the first housing 110, the second housing 120, the third housing 130 and the fourth housing 140 are interconnected.

[0073] The feed inlet 111 is located on the upper side of the first housing 110.

[0074] In this embodiment, as Figures 1-4As shown, in order to ensure the stable connection between the first housing 110, the second housing 120, the third housing 130, and the fourth housing 140, multiple bolt fixing blocks 4000 are provided on the lower side of the outer wall of the first housing 110, the upper and lower sides of the outer wall of the second housing 120, the upper and lower sides of the outer wall of the third housing 130, and the upper side of the fourth housing 140. The multiple fixing blocks 4000 are arranged sequentially and at intervals along the circumference of the outer walls of the first housing 110, the second housing 120, the third housing 130, and the fourth housing 140, thereby making the first housing 110, the second housing 120, the third housing 130, and the fourth housing 140 bolted together, and thus making the connection between the first housing 110, the second housing 120, the third housing 130, and the fourth housing 140 stable.

[0075] In this embodiment, the first housing 110, the second housing 120, the third housing 130, and the fourth housing 140 are detachably connected, which makes the storage of the housing 100 simple and flexible, without taking up too much space. Furthermore, the first housing 110, the second housing 120, the third housing 130, and the fourth housing 140 can be repaired, maintained, and cleaned by disassembly, making the maintenance of this device simple.

[0076] The fourth housing 140 can also be disassembled separately to weigh the remaining raw materials that do not need to be screened, thus making the device more widely applicable.

[0077] In some embodiments, such as Figure 1 , Figure 2 and Figure 7 As shown, a first frame 800 is provided inside the second housing 120. The shape of the first frame 800 is adapted to the second housing 120, both being rectangular. Specifically, a small sieve plate 300 is disposed on the upper surface of the first frame 800, and the lower surface of the small sieve plate 300 is attached to the upper surface of the first frame 800. A discharge port 900 is disposed between one end of the first frame 800 and the inner wall of the second housing 120. A receiving plate 500 is disposed on the lower side of the first frame 800. The center of the 00 has a first through hole 810, and the small screen plate 300 is provided with multiple first screening holes 310. The multiple first screening holes 310 are all located on the vertical upper side of the first through hole 810, so that while supporting the frame, the small screen plate 300 can be screened by the small screen plate 300 and the aggregate screened by the small screen plate 300 can fall into the receiving plate 500 through the first through hole 810. The screened aggregate falls from the discharge port 900 to the feeding end of the large screen plate 400 in the third housing 130.

[0078] In this embodiment, the vibrating element 700 is disposed on the lower side of the first frame 800, and the baffle 510 at one end of the receiving plate 500 is attached to the lower surface of the side end of the first frame 800.

[0079] In this embodiment, the tilt direction and angle of the first frame 800 are consistent with those of the small sieve plate 300.

[0080] In this embodiment, the outer walls of the other three sides of the first frame 800 are all in contact with the inner wall of the second housing 120, thereby preventing the aggregate from falling out of the gap between the first frame 800 and the inner wall of the second housing 120.

[0081] The receiving plate 500 has its side wall attached to and fixedly connected to the inner wall of the second housing 120. The side wall of the second housing 120 is provided with a cleaning port 121, which is located on one side of the receiving plate 500 and has a cover plate 122 on its surface. The aggregate in the receiving plate 500 can be cleaned through the cleaning port 121 and can be closed through the cover plate 122.

[0082] The top of the cover plate 122 is hinged to the outer wall of the housing 100, which makes it easy to open and close the cover plate 122.

[0083] In some embodiments, such as Figures 1-5 as well as Figure 9 As shown, a first fixing plate 320 is provided on the side of the small screen plate 300. The surface of the first fixing plate 320 is perpendicular to the ladder of the small screen plate 300. A first insertion hole 123 adapted to the small screen plate 300 is provided on one side wall surface of the second housing 120. The first insertion hole 123 communicates with the inner space of the second housing 120. When the side of the small screen plate 300 opposite to the first fixing plate 320 is inserted into the second housing 120 along the first insertion hole 123, the lower surface of the small screen plate 300 is in contact with the upper surface of the first frame 800. The first fixing plate 320 is connected to the side wall surface of the second housing 120 by multiple bolts. After the side surface of the small screen plate 300 opposite to the first fixing plate 320 is inserted into the second housing 120, the side surface of the small screen plate 300 opposite to the first fixing plate 320 is in contact with the inner wall of the second housing 120. The surface of the feeding end of the small screen plate 300 is in contact with the inner wall of the second housing 120.

[0084] In this embodiment, by replacing the small screen plate 300 with a first screen hole 310 of a different aperture, the device can screen aggregates with different particle size requirements, thereby broadening its applicability.

[0085] In some embodiments, such as Figures 1-7As shown, the first frame 800 has a first T-slot 820 on one end surface near the material outlet 900 and the opposite end. The lower surface of the small screen plate 300 has first limiting strips 330 on both sides. The openings of the two first T-slots 820 are connected to the first insertion hole 123 and are respectively adapted to the two first limiting strips 330. When the other end of the small screen plate 300 is inserted into the second housing 120 along the first insertion hole 123, the two first limiting strips 330 are respectively inserted into the two first T-slots 820, thereby further fixing the small screen plate 300 and limiting the insertion direction of the small screen plate 300, so that the insertion of the small screen plate 300 is stable and the direction is fixed.

[0086] The top of the first T-slot 820 is disposed within the first frame 800, and the bottom of the first T-slot 820 is disposed on the surface of the first frame 800.

[0087] In some embodiments, such as Figure 1 , Figure 2 and Figure 8 As shown, a second frame 1000 is provided inside the third housing 130. The four sides of the second frame 1000 are fixedly connected to and fitted to the four inner walls of the third housing 130. The upper side wall of the second frame 1000 is adapted to the arc structure of the large sieve plate 400, so that the second frame 1000 and the large sieve plate 400 are adapted to each other. Specifically, a second through hole 1200 is provided in the center of the second frame 1000. The large sieve plate 400 is set on the upper surface of the second frame 1000, and the second screening hole of the large sieve plate 400 is set on the upper side of the second through hole 1200, so that the aggregate to be weighed falls into the metering component 600 through the second screening hole and the second through hole 1200 for weighing.

[0088] In this embodiment, the second frame 1000 is used to support the large screen plate 400, thereby stabilizing the position of the large screen plate 400.

[0089] In this embodiment, as Figures 1-5 as well as Figure 10As shown, a second fixing plate 410 is provided on the side end of the large screen plate 400. The second fixing plate 410 is perpendicular to the surface of one side end of the large screen plate 400. A second insertion hole 131 adapted to the large screen plate 400 is provided on one side wall surface of the third housing 130. When the side end of the large screen plate 400 opposite to the second fixing plate 410 is inserted into the third housing 130 along the second insertion hole 131, the side end of the large screen plate 400 opposite to the second fixing plate 410 and the other two sides of the large screen plate 400 are in contact with the inner wall of the third housing 130. The lower surface of the large screen plate 400 is in contact with the upper surface of the second frame 1000. The large screen plate 400 and the second fixing plate 410 are bolted to the side wall surface of the third housing 130, which makes the installation and disassembly of the screen plate simple and the maintenance work simple. At the same time, it also prevents the aggregate from falling out of the gap between the large screen plate 400 and the housing 100.

[0090] In this embodiment, by replacing the large screen plate 400 with a second screen hole of different diameter, the device can screen aggregates with different particle size requirements, thereby making the device more applicable.

[0091] In some embodiments, such as Figures 1-5 as well as Figure 8 As shown, the second frame 1000 has second T-slots 1100 on both sides, and the large screen plate 400 has second limiting strips 420 on both sides of its lower surface. The openings of the two second T-slots 1100 are connected to the second insertion holes 131 and are respectively adapted to the two second limiting strips 420. When the other end of the large screen plate 400 is inserted into the third housing 130 along the second insertion hole 131, the two second limiting strips 420 are respectively inserted into the two second T-slots 1100, so that the large screen plate 400 is inserted into the third housing 130. At this time, the three sides of the large screen plate 400 are in contact with the three inner walls of the third housing 130, and the surface of the second fixing plate 410 is in contact with the outer wall surface of the third housing 130 and is connected by multiple bolts, so that the insertion of the large screen plate 400 is stable and the direction is fixed.

[0092] In some embodiments, such as Figures 1-5 As shown, a metering element 600 is provided inside the fourth housing 140. Specifically, the metering element 600 is located on the lower side of the second frame 1000, and a protective layer 610 is provided on the upper surface of the metering element 600 to prevent the metering element 600 from being damaged by falling aggregate.

[0093] In this embodiment, the protective layer 610 may be made of rubber.

[0094] In this embodiment, as Figures 1-5As shown, the fourth housing 140 has a mounting / removal port 141 on its side, and the measuring component 600 has a side plate 620 on one side. The side plate 620 is perpendicular to the dosimeter, and the surface of the side plate 620 has a pull handle 621. The mounting / removal port 141 is adapted to the measuring component 600, so that the measuring component 600 can be inserted into the fourth housing 140 through the mounting / removal port 141. The surface of the side plate 620 is in contact with the outer wall surface of the fourth housing 140, which makes the installation and removal of the measuring component 600 simple. Thus, measuring components 600 with different accuracies can be used according to the measurement progress requirements.

[0095] The handle 621 makes it easier to pull out and insert the measuring component 600.

Claims

1. A precise raw material metering tool for large-volume concrete mix proportion optimization experiments, characterized in that, The shell (100) is provided with an inclined falling plate (200) on the upper side wall, and the lower side of the falling plate (200) is sequentially provided with a small sieve plate (300) for screening small-diameter aggregate, a receiving plate (500) for receiving small-diameter aggregate, a large sieve plate (400) for large-diameter aggregate, and a metering part (600), the small sieve plate (300) is arranged at the lower side of the falling plate (200) at the feeding end, and the height of the discharging end is lower than that of the feeding end, a falling port (900) is arranged between the discharging end of the small sieve plate (300) and the inner wall of the shell (100), and the large sieve plate (400) is arranged at the lower side of the falling port (900), and the lower sides of the large sieve plate (400) and the small sieve plate (300) are provided with vibration parts (700). The shell (100) comprises a first shell (110), a second shell (120), a third shell (130) and a fourth shell (140) which are detachably connected in sequence along the vertical direction and are in communication with each other, the falling plate (200) is arranged in the first shell (110), the small sieve plate (300) and the receiving plate (500) are arranged in the second shell (120), the large sieve plate (400) is arranged in the third shell (130), and the metering part (600) is arranged in the fourth shell (140).

2. The metrology tool of claim 1, wherein: A first frame (800) is arranged in the second shell (120), the small sieve plate (300) is arranged on the upper surface of the first frame (800), the falling port (900) is arranged between one end of the first frame (800) and the inner wall of the second shell (120), and the receiving plate (500) is arranged at the lower side of the first frame (800).

3. The metrology tool of claim 2, wherein: The first frame (800) has a first through hole (810) at the center, the small sieve plate (300) is provided with a plurality of first sieve holes (310), and the plurality of first sieve holes (310) are arranged vertically above the first through hole (810).

4. The metrology tool of claim 3, wherein: The outer walls of the other three side ends of the first frame (800) are attached to the inner wall of the second shell (120), the side wall of the second shell (120) is provided with a cleaning port (121), the cleaning port (121) is arranged on one side of the receiving plate (500), and the surface is provided with a cover plate (122).

5. The metrology tool of claim 4, wherein: The small sieve plate (300) is provided with a first fixing plate (320) at the side end, one side wall surface of the second shell (120) is provided with a first jack (123) matched with the small sieve plate (300), when the side end of the small sieve plate (300) opposite to the first fixing plate (320) is inserted into the second shell (120) along the first jack (123), the lower surface of the small sieve plate (300) is attached to the upper surface of the first frame (800), and the first fixing plate (320) is bolted to the side wall surface of the second shell (120).

6. The metrology tool of claim 5, wherein: ​ 7. The metrology tool of claim 6, wherein: The first frame (800) is provided with a first T-shaped groove (820) near one end surface of the material falling port (900) and the opposite end, the small sieve plate (300) is provided with a first limiting strip (330) on both sides of the lower surface, the slot of the two first T-shaped grooves (820) is communicated with the first insertion hole (123), and is matched with the two first limiting strips (330) respectively, when the other side end of the small sieve plate (300) is inserted into the second shell (120) along the first insertion hole (123), the two first limiting strips (330) are inserted into the two first T-shaped grooves (820) respectively.

8. The metrology tool of claim 2, wherein: The third shell (130) is provided with a second frame (1000), the four side ends of the second frame (1000) are fixedly connected with the four side inner walls of the third shell (130) and are attached, and the large sieve plate (400) is arranged on the upper surface of the second frame (1000).

9. The metrology tool of claim 8, wherein: The large sieve plate (400) is provided with a second fixed plate (410) on the side end, one side wall surface of the third shell (130) is provided with a second insertion hole (131) matched with the large sieve plate (400), when the side end of the large sieve plate (400) opposite to the second fixed plate (410) is inserted into the third shell (130) along the second insertion hole (131), the lower surface of the large sieve plate (400) is attached with the upper surface of the second frame (1000), and the second fixed plate (410) is bolted with the side wall surface of the third shell (130).

10. The metrology tool of claim 9, wherein: The two side ends of the second frame (1000) are provided with a second T-shaped groove (1100), the lower surface of the large sieve plate (400) is provided with a second limiting strip (420) on both sides, the slots of the two second T-shaped grooves (1100) are communicated with the second insertion hole (131), and are matched with the two second limiting strips (420) respectively, when the other side end of the large sieve plate (400) is inserted into the third shell (130) along the second insertion hole (131), the two second limiting strips (420) are inserted into the two second T-shaped grooves (1100) respectively.

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