Mechanism sand moisture content automatic detector

By combining lifting equipment and synchronous structure, online detection of the moisture content of manufactured sand was achieved, solving the problem of detection lag in existing technologies and ensuring the accuracy of concrete mix proportions and the stability of the detection head.

CN224535128UActive Publication Date: 2026-07-21CHONGQING UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING UNIV
Filing Date
2026-06-09
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing manufactured sand moisture content testers are unable to achieve real-time, online monitoring of continuously flowing manufactured sand on conveyor belts, resulting in detection delays and affecting the accuracy and timeliness of concrete mix proportions.

Method used

An automatic moisture content detector for manufactured sand was designed. The detector and the detection head are moved downward by a lifting device to realize online monitoring of manufactured sand during the transportation process. The stability and accuracy of the detection head are ensured by the cooperation of the synchronization structure and auxiliary rod.

Benefits of technology

This technology enables online monitoring of manufactured sand during the transportation process, ensuring the accuracy of subsequent concrete mix design and testing, and preventing damage to the testing head.

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Abstract

The utility model relates to detection device technical field, and disclose a kind of mechanism sand moisture content automatic detector, including support frame and the detection equipment with detection head, further include: cross frame, install on the support frame by synchronous structure, fixedly installed with lifting equipment on the cross frame;Among them, the detection equipment is connected with the telescopic end of lifting equipment, when the detection equipment moves down and completes detection, the synchronous structure makes cross frame slide on support frame;The utility model can automatically complete detection work by lifting equipment driving detection equipment and detection head to move down, and detection head is inserted downward each time, and different mechanism sand samples are detected, to realize the on-line monitoring of mechanism sand in conveying process, indirectly guarantee the precision of subsequent concrete deployment ratio.
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Description

Technical Field

[0001] This utility model relates to the field of detection device technology, specifically to an automatic detector for the moisture content of manufactured sand. Background Technology

[0002] Rapid detection of moisture content in manufactured sand is typically accomplished using a sediment moisture analyzer. These instruments, based on resistance or high-frequency principles, can read moisture content values ​​within seconds by inserting a probe into the sand pile without damaging the sample. They are easy to operate, have a rapid response, and are ideal for on-site rapid sampling in locations such as material yards, feed inlets, or laboratories.

[0003] However, most of these testing instruments currently rely on manual sampling, requiring workers to manually collect samples from the conveyor belt or stockpile before measurement. This makes it difficult to achieve real-time, online monitoring of continuously flowing manufactured sand on the conveyor belt. Since manufactured sand continuously moves through the conveyor belt during production, conventional handheld instruments cannot automatically adapt to this dynamic environment, resulting in a lag in moisture content detection and an inability to provide timely feedback to the production control system, which affects the accuracy and timeliness of concrete mix adjustment. Utility Model Content

[0004] This invention provides an automatic moisture content detector for manufactured sand. By using a lifting device to move the detection equipment and detection head downwards, the detection work can be completed automatically. Each time the detection head is inserted downwards, different manufactured sand samples will be tested, thereby realizing online monitoring of manufactured sand during the transportation process. This indirectly ensures the accuracy of subsequent concrete mix proportions and solves the problem mentioned in the background art that it is difficult to achieve online monitoring and affects the accuracy of concrete mix proportions.

[0005] This utility model provides the following technical solution:

[0006] An automatic moisture content detector for manufactured sand includes a support frame and a detection device with a detection head. It also includes a crossbeam, which is installed on the support frame via a synchronization structure. A lifting device is fixedly installed on the crossbeam. The detection device is connected to the telescopic end of the lifting device. When the detection device moves downward to complete the detection, the synchronization structure causes the crossbeam to slide on the support frame.

[0007] As a preferred embodiment of this utility model, the synchronization structure includes a guide rod fixedly connected to a support frame, a slide table slidably mounted on the guide rod, a cross frame fixedly connected to the slide table, and a return spring installed between the slide table and one end of the guide rod.

[0008] As a preferred embodiment of this utility model, a lifting plate is longitudinally slidably installed on the cross frame, the telescopic end of the lifting device is fixedly connected to the lifting plate, and the detection device is fixedly installed on the lifting plate.

[0009] As a preferred embodiment of this utility model, an auxiliary rod is fixedly connected to the lifting plate, and a telescopic component is connected to the bottom of the auxiliary rod.

[0010] As a preferred embodiment of this utility model, the telescopic component includes a sleeve that is slidably fitted onto the bottom of the auxiliary rod, and a retaining spring is installed between the inner bottom of the sleeve and the bottom of the auxiliary rod.

[0011] As a preferred technical solution of this utility model, a horizontal plate is fixedly connected to the slide, and a shell with an opening facing downward is installed on the horizontal plate. The lower end of the detection head is longitudinally slidably inserted into the shell, and an air inlet pipe communicating with the top of the shell is provided.

[0012] As a preferred technical solution of this utility model, the housing is rotatably connected to the horizontal plate, and an annular cover is fixedly connected to the horizontal plate. The annular cover is rotatably sleeved on the top outer wall of the housing, the end of the air inlet pipe is located inside the annular cover, and the inner wall of the housing is provided with air holes extending into the annular cover.

[0013] As a preferred embodiment of this utility model, a gear is fixedly installed on the outer wall of the casing, and a rack that meshes with the gear is fixedly installed on the support frame.

[0014] As a preferred embodiment of this utility model, the horizontal plate is provided with an avoidance hole, and the sleeve passes through the avoidance hole.

[0015] As a preferred embodiment of this utility model, the auxiliary rod and the sleeve are provided in two sets, and are symmetrically arranged on both sides of the lifting plate.

[0016] Compared with the prior art, this utility model provides an automatic moisture content detector for manufactured sand, which has the following beneficial effects:

[0017] 1. In this automatic moisture content detector for manufactured sand, the detection device is moved downward by a lifting device, and the detection head on the detection device is inserted into the manufactured sand on the conveyor belt to automatically complete the detection work. Each time the detection head is inserted downward, different manufactured sand samples are detected, thereby realizing online monitoring of the manufactured sand during the transportation process and indirectly ensuring the accuracy of the subsequent concrete mixing ratio.

[0018] 2. In this automatic moisture content detector for manufactured sand, after the detection head is inserted into the manufactured sand, the manufactured sand moving with the conveyor belt will pull the detection head to move synchronously with the detection equipment. The detection equipment will then drive the slide table to slide on the guide rod, thus keeping the detection head stationary inside the manufactured sand, thereby ensuring the accuracy of the detection.

[0019] 3. In this automatic moisture content detector for manufactured sand, the auxiliary rod moves downward synchronously through the lifting plate. The auxiliary rod will drive the sleeve to be inserted into the manufactured sand. At this time, the clamping spring can make the sleeve elastically press against the conveyor belt. Thus, when the manufactured sand moves with the conveyor belt, the sleeve and the auxiliary rod will share the thrust on the detection head, making the detection head less prone to damage.

[0020] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model uses a lifting device to move the detection equipment and detection head downwards, which can automatically complete the detection work. Each time the detection head is inserted downwards, it will detect different manufactured sand samples, thereby realizing online monitoring of manufactured sand during the transportation process and indirectly ensuring the accuracy of subsequent concrete mixing ratio. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0022] Figure 1 This is a three-dimensional schematic diagram of the present utility model. Figure 1 ;

[0023] Figure 2 This is a three-dimensional illustration of the present utility model. Figure 2 .

[0024] Figure 3 This is a three-dimensional schematic diagram of the present invention in use;

[0025] Figure 4 This is a partial structural schematic diagram of the main view of this utility model;

[0026] Figure 5 This utility model Figure 4 Schematic diagram of part A in the middle.

[0027] In the diagram: 1. Support frame; 2. Horizontal frame; 3. Testing equipment; 4. Testing head; 5. Lifting device; 6. Lifting plate; 7. Guide rod; 8. Slide table; 9. Return spring; 10. Horizontal plate; 11. Housing; 12. Air inlet pipe; 13. Annular cover; 14. Air hole; 15. Gear; 16. Rack; 17. Auxiliary rod; 18. Sleeve; 19. Clamping spring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example:

[0030] Reference Figures 1-3 As shown, an automatic moisture content detector for manufactured sand includes a support frame 1 and a detection device 3 with a detection head 4. The detection device 3 is a sediment moisture content detector, and the detection head 4 is used to insert into the manufactured sand to complete the detection work. It also includes an inverted U-shaped crossbeam 2, which is installed on the support frame 1 through a synchronous structure. A lifting device 5 is fixedly installed on the crossbeam 2. The lifting device 5 is an electric telescopic rod. The detection device 3 is connected to the telescopic end of the lifting device 5. When the detection device 3 moves downward to complete the detection, the synchronous structure causes the crossbeam 2 to slide on the support frame 1. The synchronous structure includes a guide rod 7 fixedly connected to the support frame 1. A slide table 8 is slidably installed on the guide rod 7. The crossbeam 2 is fixedly connected to the slide table 8. A return spring 9 is installed between the slide table 8 and one end of the guide rod 7.

[0031] In use, the support frame 1 is fixed above the conveying equipment for conveying manufactured sand. Then, the lifting device 5 is controlled by the controller (PLC) to perform timed extension and retraction actions. When the lifting device 5 extends, it drives the detection device 3 to move downward, and the detection head 4 on the detection device 3 will be inserted into the manufactured sand on the conveyor belt, thus automatically completing the detection work. Each time the detection head 4 is inserted downward, different manufactured sand samples will be tested, thereby realizing online monitoring of the manufactured sand during the conveying process and indirectly ensuring the accuracy of the subsequent concrete mixing ratio. When the lifting device 5 retracts, it drives the detection head 4 to be pulled out of the manufactured sand. After the detection head 4 is inserted into the manufactured sand, the manufactured sand moving with the conveyor belt will pull the detection head 4 to move synchronously with the detection device 3. The detection device 3 will then drive the slide table 8 to slide on the guide rod 7, thus keeping the detection head 4 stationary inside the manufactured sand, thereby ensuring the accuracy of the detection. When the detection head 4 is pulled out of the manufactured sand, the detection head 4 is no longer pulled by the manufactured sand, so the return spring 9 will drive the slide table 8 and the detection device 3 to move in the opposite direction to reset.

[0032] Reference Figures 1-4As shown, a lifting plate 6 is longitudinally slidably installed on the cross frame 2. The telescopic end of the lifting device 5 is fixedly connected to the lifting plate 6. The detection device 3 is fixedly installed on the lifting plate 6. When the lifting device 5 performs telescopic movements, it will drive the lifting plate 6 to rise and fall on the cross frame 2. The lifting plate 6 will drive the detection device 3 and the detection head 4 to rise and fall. The lifting plate 6 can obtain the guiding effect of the cross frame 2, making the lifting action more stable.

[0033] Reference Figures 1-4 As shown, an auxiliary rod 17 is fixedly connected to the lifting plate 6. A telescopic component is connected to the bottom of the auxiliary rod 17. The telescopic component includes a sleeve 18 that is slidably sleeved on the bottom of the auxiliary rod 17. A retaining spring 19 is installed between the inner bottom of the sleeve 18 and the bottom of the auxiliary rod 17. An avoidance hole is opened on the horizontal plate 10. The sleeve 18 passes through the avoidance hole. There are two sets of both the auxiliary rod 17 and the sleeve 18, which are symmetrically arranged on both sides of the lifting plate 6.

[0034] When the lifting plate 6 moves downward, it will also drive the auxiliary rod 17 to move synchronously. The auxiliary rod 17 will drive the sleeve 18 to be inserted into the manufactured sand. At this time, the clamping spring 19 can make the sleeve 18 elastically press against the conveyor belt. Thus, when the manufactured sand moves with the conveyor belt, the sleeve 18 and the auxiliary rod 17 will share the thrust on the detection head 4, making the detection head 4 less prone to damage.

[0035] Reference Figures 1-5 As shown, a horizontal plate 10 is fixedly connected to the slide table 8. A shell 11 with an opening facing downwards is installed on the horizontal plate 10. The shell 11 is cylindrical in shape. The lower end of the detection head 4 is longitudinally slidably inserted into the shell 11. A gap is provided between the outer wall of the detection head 4 and the inner wall of the shell 11. An air inlet pipe 12 communicating with the top of the shell 11 is provided. The shell 11 is rotatably connected to the horizontal plate 10. An annular cover 13 is fixedly connected to the horizontal plate 10. The annular cover 13 is rotatably sleeved on the top outer wall of the shell 11. The end of the air inlet pipe 12 is located inside the annular cover 13. An air hole 14 extending into the annular cover 13 is provided on the inner wall of the shell 11. A gear 15 is fixedly installed on the outer wall of the shell 11. A rack 16 that meshes with the gear 15 is fixedly installed on the support frame 1.

[0036] When the detection head 4 moves downward, it extends out from the housing 11. When the detection head 4 moves upward and resets, the end inserted into the manufactured sand is retracted into the housing 11. At this time, compressed air is supplied to the air inlet pipe 12 through the air pump. The compressed air enters the annular cover 13, then enters the inner top of the housing 11 through the air hole 14, and finally sprays out from the bottom of the housing 11. During the passage of the compressed air through the housing 11, the manufactured sand on the outer wall of the detection head 4 is blown off, which can ensure the accuracy of subsequent detection. When the detection head 4 is pulled out from the manufactured sand, the crossbar 2 slides along the guide rod 7, which causes the gear 15 to roll along the rack 16. The gear 15 drives the housing 11 to rotate, and the housing 11 also drives the air hole 14 to revolve around the outer wall of the detection head 4. This allows the compressed air entering the housing 11 to be blown more comprehensively onto the outer wall of the detection head 4, resulting in a better cleaning effect.

[0037] Components not described in detail in this article are existing technologies.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic moisture content detector for manufactured sand, comprising a support frame (1) and a detection device (3) with a detection head (4), characterized in that, Also includes: A crossbeam (2) is installed on the support frame (1) via a synchronous structure, and a lifting device (5) is fixedly installed on the crossbeam (2). The detection device (3) is connected to the telescopic end of the lifting device (5). When the detection device (3) moves downward to complete the detection, the synchronization structure causes the cross frame (2) to slide on the support frame (1).

2. The automatic moisture content detector for manufactured sand according to claim 1, characterized in that, The synchronization structure includes a guide rod (7) fixedly connected to the support frame (1), a slide table (8) slidably mounted on the guide rod (7), a cross frame (2) fixedly connected to the slide table (8), and a return spring (9) installed between the slide table (8) and one end of the guide rod (7).

3. The automatic moisture content detector for manufactured sand according to claim 2, characterized in that, A lifting plate (6) is longitudinally slidably installed on the cross frame (2), the telescopic end of the lifting device (5) is fixedly connected to the lifting plate (6), and the detection device (3) is fixedly installed on the lifting plate (6).

4. The automatic moisture content detector for manufactured sand according to claim 3, characterized in that, An auxiliary rod (17) is fixedly connected to the lifting plate (6), and a telescopic component is connected to the bottom of the auxiliary rod (17).

5. An automatic moisture content detector for manufactured sand according to claim 4, characterized in that, The telescopic component includes a sleeve (18) that is slidably sleeved on the bottom of the auxiliary rod (17), and a retaining spring (19) is installed between the inner bottom of the sleeve (18) and the bottom of the auxiliary rod (17).

6. An automatic moisture content detector for manufactured sand according to claim 5, characterized in that, A horizontal plate (10) is fixedly connected to the slide (8), and a shell (11) with an opening facing downward is installed on the horizontal plate (10). The lower end of the detection head (4) is longitudinally slidably inserted into the shell (11), and an air inlet pipe (12) communicating with it is provided on the top of the shell (11).

7. An automatic moisture content detector for manufactured sand according to claim 6, characterized in that, The casing (11) is rotatably connected to the horizontal plate (10), and an annular cover (13) is fixedly connected to the horizontal plate (10). The annular cover (13) is rotatably sleeved on the top outer wall of the casing (11). The end of the air inlet pipe (12) is located inside the annular cover (13). The inner wall of the casing (11) is provided with an air hole (14) extending into the annular cover (13).

8. An automatic moisture content detector for manufactured sand according to claim 7, characterized in that, A gear (15) is fixedly installed on the outer wall of the casing (11), and a rack (16) that meshes with the gear (15) is fixedly installed on the support frame (1).

9. An automatic moisture content detector for manufactured sand according to claim 6, characterized in that, The horizontal plate (10) has an avoidance hole, and the sleeve (18) passes through the avoidance hole.

10. An automatic moisture content detector for manufactured sand according to claim 5, characterized in that, The auxiliary rod (17) and the sleeve (18) are each provided in two sets and are symmetrically arranged on both sides of the lifting plate (6).