Rapid detection device for moisture content of concrete aggregate

Abstract

The utility model relates to a concrete aggregate moisture content rapid detection device, and relates to the field of concrete detection.The concrete aggregate moisture content rapid detection device comprises a detection bin, a feeding rod and a material disc placed at the top of the feeding rod, the bottom of the feeding rod penetrates out of the detection bin and is in transmission connection with a feeding motor, and the top of the detection bin is provided with a material opening coaxial with the feeding rod and provided with a sealing cover; a spiral heating pipe is arranged in the detection bin, a weighing plate is integrally connected to the position, below the spiral heating pipe, in the detection bin, a weighing hole coaxial with the feeding rod is formed in the weighing plate, a weighing device is installed at the position, at the weighing hole, of the weighing plate, and aggregate is located in the center of the spiral heating pipe when heated. The device has the advantages that the aggregate in the detection bin can be rapidly heated, and the moisture content in the aggregate is analyzed in combination with the weight of the water liquid formed by condensing the moisture evaporated from the aggregate and the weight change of the aggregate before and after heating, so that the detection efficiency and the accuracy of the detection result are improved. And different aggregates can be heated at the same time.

Description

Technical Field

[0001] This application relates to the field of concrete testing, and in particular to a rapid testing device for the moisture content of concrete aggregates. Background Technology

[0002] Concrete aggregates refer to the granular, loose materials that act as a skeleton or filler in concrete. They are divided into coarse aggregates and fine aggregates. Coarse aggregates include pebbles and crushed stone, while fine aggregates include natural sand and manufactured sand. The amount of water introduced into the concrete by the aggregates needs to be included in the total water usage. Therefore, it is necessary to determine the moisture content of the aggregates so that this moisture can be deducted from the added water, ensuring the accuracy of the concrete mix proportions. Currently, the dry-wet weight method (i.e., measuring the weight of the aggregates before and after drying, and detecting the moisture content by the weight difference) is the simplest and most commonly used method for measuring the moisture content of aggregates. Utility Model Content

[0003] In order to improve the detection efficiency of concrete aggregate moisture content testing devices and shorten the detection time, this application provides a rapid testing device for concrete aggregate moisture content.

[0004] The rapid detection device for concrete aggregate moisture content provided in this application adopts the following technical solution:

[0005] A rapid testing device for the moisture content of concrete aggregate includes a testing chamber, a feeding rod threaded through the testing chamber, and a material tray placed on top of the feeding rod. The bottom of the feeding rod extends out of the testing chamber and is connected to a feeding motor. The top of the testing chamber has a material inlet coaxial with the feeding rod, and a sealing cover is provided at the material inlet. A spiral heating tube coaxial with the feeding rod is provided inside the testing chamber. A weighing plate is integrally connected to the bottom of the spiral heating tube inside the testing chamber. A weighing hole coaxial with the feeding rod is provided on the weighing plate, and a weighing device is installed at the weighing hole, which is located at the center of the spiral heating tube when the aggregate is heated.

[0006] Optionally, the weighing device includes a weighing ring mounted on the weighing plate and coaxial with the weighing hole, and a return spring connected at both ends to the weighing ring and the weighing plate respectively. The weighing ring is connected to a weighing sensor for monitoring the weight of the aggregate. The lateral dimension of the weighing ring is larger than the size of the feeding rod and smaller than the size of the material tray.

[0007] Optionally, the testing chamber is provided with a plurality of corresponding material trays, spiral heating tubes, feeding rods and weighing devices at equal intervals along the circumference. The testing chamber is also provided with a plurality of partition plates along the circumference, which divide the interior of the testing chamber into sections along the lateral direction. The bottom of each partition plate is fixedly connected to the weighing plate.

[0008] Optionally, the inner wall of the detection bin is paved with a cooling pipe filled with cooling liquid, the bottom of the detection bin is in a conical structure and is provided with a collection tank, and the bottom of the collection tank is provided with a weight sensor for detecting the weight of the condensed water.

[0009] Optionally, the top of the feeding rod is provided with a ring-mounted disc seat, the inner side wall of the disc seat is matched with the inner wall of the disc, the disc is made of magnetic material, and a coil is wound on the disc seat.

[0010] Optionally, the length of the feeding rod is greater than the distance between the feeding port and the weighing hole along the axis of the detection bin.

[0011] In summary, the present application has at least one of the following beneficial technical effects:

[0012] 1. The disc containing the aggregate is located in the middle of the spiral heating pipe during the operation of the present application, and the detection bin is in a sealed state, so that the aggregate can be quickly heated to a predetermined temperature, thereby improving the detection efficiency;

[0013] 2. After the water in the aggregate is evaporated, the water can be re-condensed into water in the inner wall of the detection bin through the cooling pipe, and the water content of the aggregate is determined by measuring the weight of the water and the weight change of the aggregate before and after heating, thereby improving the accuracy of the detection result;

[0014] 3. The present application can meet the needs of heating various aggregates at the same time, facilitate rapid heating of different aggregates, and also can simultaneously detect multiple samples of the same aggregate, and finally calculate the average value to improve the accuracy of the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic view of the overall structure of the concrete aggregate water content rapid detection device of the present application.

[0016] Figure 2 is Figure 1 a sectional view of A-A in FIG.

[0017] Figure 3 is Figure 2 an enlarged view of A in FIG.

[0018] Figure 4 is a schematic view of the internal structure of the concrete aggregate water content rapid detection device of the present application.

[0019] Figure 5 is an exploded view of the weighing device of the concrete aggregate water content rapid detection device of the present application.

[0020] Figure 6It is the explosion view of the disc seat and the connecting structure of the concrete aggregate water content rapid detection device.

[0021] Explanation of reference numerals: 1, detection bin; 11, material port; 12, sealing cover; 13, partition plate; 2, feeding rod; 21, disc seat; 211, coil; 3, material disc; 4, feeding motor; 5, spiral heating pipe; 6, weighing plate; 61, weighing hole; 7, weighing device; 71, weighing ring; 72, return spring; 8, cooling pipe; 9, collection tank; 91, weight sensor. DETAILED DESCRIPTION

[0022] The following will be described in detail with reference to the accompanying drawings Figures 1-6 The application is further described in detail.

[0023] The embodiment of the application discloses a concrete aggregate water content rapid detection device.

[0024] Reference Figure 1 and Figure 2 The concrete aggregate water content rapid detection device comprises a detection bin 1 for heating aggregate, a feeding rod 2 threaded through the bottom of the detection bin 1, and a material disc 3 placed on the top of the feeding rod 2. The material disc 3 is preferably a conical structure, and its function is to hold aggregate, so that the aggregate can be conveniently fed into the detection bin 1 through the feeding rod 2. The feeding rod 2 is drivingly connected with a feeding motor 4 at one end penetrating out of the bottom of the detection bin 1, and the feeding rod 2 is driven to rotate by the feeding motor 4, thereby realizing the up-and-down movement of the material disc 3 in the detection bin 1.

[0025] Reference Figure 2 and Figure 3 Further, the detection bin 1 is provided with a material port 11 for the aggregate to enter and exit at the top. The material port 11 is coaxial with the feeding rod 2, and the upper end of the feeding rod 2 can penetrate out of the top of the detection bin 1, so that the operator can more conveniently put and take the material. The detection bin 1 is provided with a sealing cover 12 at the material port 11, which is used to form a sealed environment in the bin body of the detection bin 1, thereby improving the heating efficiency of the aggregate.

[0026] The mounting mode of the sealing cover 12 in the application is not limited, but connection modes such as clamping and hinging are common connection modes of cover bodies, and thus should also be included in the protection scope of the application.

[0027] Reference Figure 2 and Figure 4 The detection bin 1 is provided with a spiral heating pipe 5 coaxial with the feeding rod 2, which is used to heat the aggregate to evaporate the internal moisture. Furthermore, the detection bin 1 is integrally provided with a weighing plate 6 below the spiral heating pipe 5 in the horizontal direction. The weighing plate 6 is provided with a weighing hole 61 through which only the feeding rod 2 can pass, and the weighing device 7 for weighing the mass of the aggregate before and after heating is installed at the position of the weighing hole 61 on the weighing plate 6.

[0028] In the present application, when the device is working normally, the feeding rod 2 will move the tray 3 and the aggregate to the middle position inside the spiral heating pipe 5 under the drive of the feeding motor 4, so as to achieve the purpose of gathering heat through the relatively narrow environment in the middle of the spiral heating pipe 5, so that the aggregate can be quickly heated, and the overall heating efficiency of the device is improved.

[0029] In addition, the sealing of the inside of the detection bin 1 will make the heating effect more significant, and avoid the interference of the external environment on the detection result.

[0030] Referring to Figure 5 Specifically, the weighing device 7 includes a weighing ring 71 installed on the weighing plate 6 and coaxial with the weighing hole 61, and a reset spring 72 connected to the weighing ring 71 and the weighing plate 6 at both ends. The weighing ring 71 is connected with a weighing sensor, which can judge the weight of the aggregate in the tray 3 through the stress condition of the weighing ring 71 when the tray 3 presses down the weighing ring 71 or the displacement of the weighing ring 71 along the axial direction, and display it for the operator to record and analyze.

[0031] It is worth mentioning that the radial dimension of the weighing ring 71 is greater than the radial dimension of the feeding rod 2 and less than the maximum radial dimension of the tray 3. Moreover, the inner side wall of the weighing ring 71 cooperates with the outer side wall of the tray 3 to form a clamping effect on the tray 3. During the weighing process, the tray 3 only contacts with the weighing ring 71, so as to ensure the accuracy of the weighing result.

[0032] Referring to Figure 2 and Figure 4 Further, the detection bin 1 is circumferentially and equidistantly provided with a plurality of one-to-one corresponding trays 3, spiral heating pipes 5, feeding rods 2 and weighing devices 7. The detection bin 1 is circumferentially connected with a plurality of partition plates 13 fixedly connected with the weighing plate 6 at the bottom, and the plurality of partition plates 13 divide the detection bin 1 into a plurality of areas along the horizontal direction. Each spiral heating pipe 5 is located between the areas surrounded by two adjacent partition plates 13, so that the device can simultaneously heat and detect the aggregate according to different aggregate characteristics, and has stronger practicability.

[0033] Similarly, the present application can also detect the moisture content of multiple samples of the same aggregate, so as to further improve the accuracy of the detection result by calculating the average value.

[0034] The inner wall of the detection bin 1 is spirally laid with a cooling pipe 8, and the cooling pipe 8 is filled with cooling liquid. The bottom of the detection bin 1 is a conical structure, and a collection tank 9 for collecting condensed water is installed. When the aggregate is heated, the water in the aggregate is converted into water vapor and flows in the space inside the detection bin 1. However, when the water vapor contacts the cooling pipe 8, it is liquefied and falls along the inner wall of the detection bin 1 into the collection tank 9.

[0035] The bottom of the collection tank 9 is provided with a weight sensor 91 for weighing the water in the collection tank 9. Through the design of this structure, the operator can analyze the water content of the aggregate by combining the detection data of the weight sensor 91 and the weighing sensor, improve the accuracy and reliability of the detection results, and also can eliminate the influence of external factors.

[0036] It should be noted that the inside of the collection tank 9 is also partitioned, and the weight sensor 91 can separately weigh the water in different areas inside the collection tank 9.

[0037] Referring to Figure 6 Further, the top of the feeding tray 3 is provided with an annular disc seat 21, and the inner side wall of the disc seat 21 is also adapted to the outer side wall of the tray 3 to ensure that the tray 3 is more stable during movement. Moreover, the tray 3 is made of magnetic material, and a coil 211 with electricity is embedded on the disc seat 21. The coil 211 generates a magnetic field to attract the tray 3 and the disc seat 21 together to achieve stable connection. At the same time, the magnetic field generated by the coil 211 can also promote the evaporation speed of the water in the aggregate, further improving the detection efficiency.

[0038] Preferably, the tray 3 is made of iron. The iron tray 3 not only has good magnetic attraction, but also has good heat conductivity, which is convenient for heating the aggregate.

[0039] The implementation principle of the concrete aggregate water content rapid detection device of the embodiment is as follows:

[0040] Firstly, the feeding motor 4 extends the tray 3 from the material opening 11 to the outside of the detection bin 1 for loading. Then, the aggregate is transported to the weighing ring 71 for the first time under the driving of the feeding rod 2. Then, the tray 3 is moved to the middle of the spiral heating pipe 5, and the spiral heating pipe 5 heats it to a certain temperature, so that the water in it is completely evaporated. Finally, the aggregate after dehydration treatment is transported to the weighing ring for the second time, and the operator can calculate the water content of the aggregate according to the mass difference before and after the aggregate.

[0041] During the heating of the aggregate, the bin body of the detection bin 1 is airtight, and the water in the air in the bin body is liquefied into water on the surface of the cooling pipe 8 on the inner side wall of the bin body when it contacts the cooling pipe 8. The water falls into the collection tank 9 below under the action of gravity and is weighed.

[0042] The operator can calculate the water content of the aggregate in combination with the weight of the water and the weight change of the aggregate, so that the result has higher accuracy and reliability.

[0043] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made in the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rapid testing device for the moisture content of concrete aggregate, comprising a testing chamber (1), a feeding rod (2) threaded through the testing chamber (1), and a material tray (3) placed on top of the feeding rod (2), wherein the bottom of the feeding rod (2) extends out of the testing chamber (1) and is connected to a feeding motor (4), and the top of the testing chamber (1) has a material inlet (11) coaxial with the feeding rod (2), and a sealing cap (12) is provided at the material inlet (11), characterized in that: The detection bin (1) is provided with a spiral heating pipe (5) coaxial with the feeding rod (2), the detection bin (1) is integrally connected with a weighing plate (6) below the spiral heating pipe (5), the weighing plate (6) is provided with a weighing hole (61) coaxial with the feeding rod (2), and the weighing plate (6) is provided with a weighing device (7) at the position of the weighing hole (61), and the aggregate heating is located at the center position of the spiral heating pipe (5).

2. The rapid detection device for water content of concrete aggregate according to claim 1, characterized in that: The weighing device (7) includes a weighing ring (71) coaxial with the weighing hole (61) and installed on the weighing plate (6), and a reset spring (72) connected with the weighing ring (71) and the weighing plate (6) at both ends, the weighing ring (71) is connected with a weighing sensor for monitoring the weight of the aggregate, the transverse size of the weighing ring (71) is greater than the size of the feeding rod (2) and less than the size of the tray (3).

3. The rapid detection device for water content of concrete aggregate according to claim 2, characterized in that: The detection bin (1) is provided with a plurality of one-to-one corresponding trays (3), spiral heating pipes (5), feeding rods (2) and weighing devices (7) arranged at equal intervals along the circumference, and a plurality of partition plates (13) are integrally arranged along the circumference in the detection bin (1), a plurality of partition plates (13) divide the detection bin (1) into several parts along the transverse direction, and the bottom of each partition plate (13) is fixedly connected with the weighing plate (6).

4. The rapid detection device for water content of concrete aggregate according to claim 3, characterized in that: The inner wall of the detection bin (1) is provided with a cooling pipe (8) filled with cooling liquid, the bottom of the detection bin (1) is a conical structure and is provided with a collection tank (9), and the bottom of the collection tank (9) is provided with a weight sensor (91) for detecting the weight of condensed water.

5. The rapid detection device for water content of concrete aggregate according to claim 4, characterized in that: The top of the feeding rod (2) is provided with a ring-mounted disc seat (21), and the inner wall of the disc seat (21) is matched with the inner wall of the tray (3), the tray (3) is made of magnetic material, and the disc seat (21) is wound with a coil (211) with electricity.

6. The rapid detection device for water content of concrete aggregate according to claim 5, characterized in that: The length of the feeding rod (2) is greater than the distance between the material port (11) and the weighing hole (61) along the axis direction of the detection bin (1).

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