Dust removal protection device for monitoring gravel production

Abstract

This utility model relates to monitoring equipment for crushed stone production, specifically a dust removal and protection device for monitoring crushed stone production. The device includes a protective cover, comprising an inner wall and an outer wall spaced apart. The inner wall of the inner cover encloses an upward-opening installation space for mounting a camera assembly. An inner eave extends horizontally inward from the bottom of the installation space, and a camera hole is formed vertically through the center of the inner eave for the camera assembly to capture images of the crushed stone downwards. An air supply channel is formed between the inner wall, outer wall, and inner eave, allowing gas to axially exit from the camera hole, forming an air barrier to prevent dust and crushed stone from entering the lens of the camera assembly. The device has a simple structure, is easy to maintain, effectively improves monitoring efficiency, reduces equipment wear and labor costs, and is suitable for large-scale applications in factories or construction sites.

Description

Technical Field

[0001] This utility model relates to the technical field of monitoring equipment for crushed stone production, and specifically to a dust removal and protection device for monitoring crushed stone production. Background Technology

[0002] With the rapid development of China's expressway construction, the production of crushed stone, the raw material for expressway asphalt pavement, has also received considerable attention and importance. The construction of modern quarries and the production of high-quality crushed stone have become a consensus. However, problems encountered during asphalt pavement construction, such as mixture segregation, excessive content of needle-like and flaky particles in the crushed stone, uneven particle size distribution, significant color difference in the crushed stone, and decreased workability, seriously affect the service life of the pavement.

[0003] Currently, China has not yet truly established a source control system for ensuring the quality stability of road aggregate production at the aggregate production line. Ensuring the consistency of particle size distribution is crucial for guaranteeing the consistency of asphalt mixture composition, which in turn leads to high-quality road surfaces. Engineering practice has proven that setting up a dedicated aggregate monitoring system to monitor aggregate production at its source and provide a stable supply of high-quality aggregates is an urgent issue.

[0004] When monitoring the crushed stone production process in real time on the production line, various environmental factors (such as field of view, camera focal length, camera shake, and dust and flying debris) can significantly affect the measurement results. To ensure data accuracy, regular dust cleaning of the camera lens and adjustments to the field of view and camera focal length are usually required. These operations reduce the accuracy of the monitoring system, and the need for continuous adjustments and corrections during production further reduces the efficiency of the inspection. Because real-time monitoring of the production process is not possible, inspection personnel face potential risks. These issues need to be addressed to improve the performance and reliability of the monitoring system. Utility Model Content

[0005] This utility model provides a dust removal and protection device for monitoring stone crushing production. It solves the problems of lens contamination and damage from flying stones by using an airflow barrier to prevent dust and a double-layer structure to prevent impact, thereby improving the reliability and continuity of the monitoring system.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A dust removal and protection device for monitoring stone crushing production includes a protective cover. The protective cover includes an inner wall and an outer wall spaced apart. The inner wall of the inner wall surrounds an upward-opening installation space for mounting a camera assembly. The bottom of the installation space extends horizontally inward with an inner eave. A camera hole for the camera assembly to shoot downwards at the center of the inner eave is formed. An air supply channel is formed between the inner wall, the outer wall, and the inner eave. Gas is axially output from the camera hole to form an air barrier, preventing dust and stone from entering the lens position of the camera assembly.

[0008] Furthermore, the inner and outer cover walls form a sealed air supply channel at both ends, and the upper end of the protective cover is provided with an air inlet that communicates with the air supply channel and is connected to an external air source.

[0009] Furthermore, a plurality of gas output holes are evenly spaced along the circumference of the shooting hole on the inner side of the inner edge; viewed from the side, the gas supply channel has an L-shaped structure, and the gas enters through the air inlet and flows downward along the gas supply channel, converging towards the center of the shooting hole through the gas output holes.

[0010] Furthermore, a mounting bracket is fixedly provided on the inner wall of the inner cover. The mounting bracket is used to install the camera component. The mounting bracket is provided with a plurality of mounting holes in an array. The mounting holes are used to adapt to camera components of different specifications and adjust their installation height. The lens axis of the camera component coincides with the shooting hole axis.

[0011] Furthermore, the outer wall of the outer cover is provided with a connecting rod, which is used to fix the protective cover in place.

[0012] Furthermore, the camera component is a gigabit Ethernet industrial area scan camera, the protective cover is made of high-strength engineering plastic or metal, and the outer side of the outer cover wall is provided with a buffer layer to prevent impact from flying stones.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention can be directly applied to stone crushing production lines. In conjunction with industrial area array cameras and artificial intelligence recognition systems, it enables real-time monitoring of stone crushing quality parameters. The device has a simple structure and is easy to maintain, effectively improving monitoring efficiency, reducing equipment wear and labor costs, and is suitable for large-scale applications in factories or construction sites. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the airflow direction of this utility model;

[0018] Figure 3 This is a top view of the structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the utility model in use.

[0020] Figure 5 for Figure 4 A cross-sectional schematic diagram.

[0021] 1. Protective cover, 11. Inner cover wall, 12. Outer cover wall, 2. Air inlet, 3. Inner eaves, 4. Camera hole, 5. Gas outlet hole, 6. Mounting bracket, 7. Connecting rod, 8. Installation space, 9. Air supply channel. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. 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.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] like Figure 1-4 As shown, in the fabrication of the protective cover of this utility model, the inner wall 11 and the outer wall 12 are made of high-strength engineering plastic injection molding or metal sheet processing, and a polyurethane foam buffer layer is pasted on the outer side of the outer wall; the bottom of the inner wall extends inward to form an inner eave 3, with a shooting hole 4 in the center, and gas output holes 5 are evenly opened along the circumference on the inner side of the inner eave. The air supply channel 9 is composed of the spaced inner and outer walls, sealed at both ends, and has an air inlet 2 at the top. An aluminum alloy mounting bracket 6 is fixed to the inner wall of the inner wall, and an array of mounting holes (such as 3 holes horizontally × 3 holes vertically, with a hole spacing of 50mm) is opened on the bracket; a connecting rod 7 is set on the outer wall of the outer wall, the length of which is customized according to the height of the gantry crane on site, and space is reserved at the connection point for the installation of a shock-absorbing structure.

[0027] The specific installation process of this utility model is as follows: a small gantry crane is installed above the conveyor belt of the crushing production line to ensure isolation from the conveyor belt; the protective cover 1 is fixed to the crossbeam of the gantry crane through the connecting rod 7, and the height is adjusted so that the shooting hole 4 is aligned with the conveyor belt; the industrial area array camera is installed on the mounting bracket 6, and the lens axis is adjusted to coincide with the axis of the shooting hole 4; the air inlet 2 is connected to the air source, and after opening, the airflow at the shooting hole 4 is detected to ensure the formation of a uniform air barrier; LED strip light sources are installed on both sides of the protective cover to ensure strong exposure of the shooting area and eliminate interference from external light sources.

[0028] Airflow test: Turn on the gas source, bring the smoke test paper close to the shooting hole (4), and observe whether the airflow is evenly output downward to form a barrier (the smoke should flow away from the lens); test the flow rate of the gas output hole to ensure that the average flow rate is ≥5m / s and the flow rate difference between each hole is ≤10%.

[0029] Image acquisition calibration: The camera is run to acquire images of crushed stone. The brightness of the light source, the camera distance and the image parameters are adjusted through the monitoring system software to achieve the best image clarity. The data is compared with the data of manual screening to ensure that the deviation of the crushed stone gradation passing rate detected by the monitoring system is ≤2%.

[0030] The working principle of this invention is as follows: An external air source inputs compressed air into the air delivery channel 9 through the air inlet 2. The gas flows downwards along the L-shaped channel, converges at the center of the imaging hole 4 through the gas outlet 5 of the inner eaves 3, forming an axial airflow barrier that prevents dust and gravel from approaching the lens and blows away the lens surface. The outer casing 12 and buffer layer resist the impact of flying stones, and the connecting rod 7 and shock-absorbing structure reduce the impact of gantry crane vibration, ensuring clear and stable image acquisition.

[0031] This invention can be directly applied to stone crushing production lines. In conjunction with industrial area array cameras and artificial intelligence recognition systems, it enables real-time monitoring of stone crushing quality parameters. The device has a simple structure and is easy to maintain, effectively improving monitoring efficiency, reducing equipment wear and labor costs, and is suitable for large-scale applications in factories or construction sites.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dust removal protection device for monitoring stone crushing production, characterized in that, The device includes a protective cover, comprising an inner wall and an outer wall spaced apart. The inner wall of the inner cover encloses an upward-opening mounting space for mounting a camera assembly. The bottom of the mounting space extends horizontally inward with an inner eave. A shooting hole for the camera assembly to shoot downward at gravel is formed through the center of the inner eave. An air supply channel is formed between the inner wall, the outer wall, and the inner eave. Gas is axially output from the shooting hole to form an air barrier, preventing dust and gravel from entering the lens position of the camera assembly.

2. The dust removal protection device according to claim 1, characterized in that, The inner and outer covers form a sealed air supply channel at both ends. The upper end of the protective cover is provided with an air inlet that communicates with the air supply channel and is connected to an external air source.

3. The dust removal protection device according to claim 2, characterized in that, The inner side of the inner edge is provided with a number of gas output holes evenly spaced along the circumference of the shooting hole; viewed from the side, the gas supply channel has an L-shaped structure, and the gas enters through the air inlet and flows downward along the gas supply channel, and converges towards the center of the shooting hole through the gas output holes.

4. The dust removal protection device according to claim 3, characterized in that, An installation bracket is fixedly provided on the inner wall of the inner cover. The installation bracket is used to install the camera component. The installation bracket is provided with a plurality of mounting holes arranged in an array. The mounting holes are used to adapt to camera components of different specifications and adjust their installation height. The lens axis of the camera component coincides with the shooting hole axis.

5. The dust removal protection device according to claim 4, characterized in that, The outer wall of the outer cover is provided with a connecting rod, which is used to fix the protective cover in place.

6. The dust removal protection device according to any one of claims 1-5, characterized in that, The camera assembly is a gigabit Ethernet industrial area scan camera, the protective cover is made of high-strength engineering plastic or metal, and the outer side of the outer cover wall is provided with a buffer layer to prevent impact from flying stones.

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