Mortar cleaning and recycling system of belt conveyor for sandstone wet production

Abstract

The invention relates to the technical field of sandstone wet production, in particular to a mortar cleaning and recycling system of a belt conveyor for sandstone wet production. Comprising a controller, a mortar collecting tank, a first image collecting device, a first flushing device and a mortar separating and recycling device, wherein the mortar collecting tank is arranged below a belt conveyor and provided with an opening in the top; the first image collecting device is arranged on the opening side of the mortar collecting tank and provided with an upward collecting direction; the first flushing device is arranged on the opening side of the mortar collecting tank and provided with an upward water outlet direction; and the first image acquisition device and the first flushing device are electrically connected with the controller. The belt return section image is shot in real time, the pollution degree is accurately judged through image gray level recognition, then the first flushing device is controlled, on-demand cleaning is achieved, the influence on the service life and operation stability of the belt conveyor is avoided through the flushing cleaning mode, the cleaning frequency is intelligently controlled, and the cleaning efficiency is improved. And compared with a traditional continuous flushing scheme, more water is saved, and the economical efficiency and the environmental protection performance are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sand and gravel wet production, in particular to a mortar cleaning and recycling system of a belt conveyor for sand and gravel wet production. BACKGROUND

[0002] In the wet production process of the sand and gravel aggregate processing system, water washing and screening is one of the key processes. In this process, part of the fine aggregate and mud slurry is easy to combine with water to form mortar. These mortars will be adsorbed on the surface of the coarse aggregate and the conveying belt of the belt conveyor. When the belt conveyor runs to the return section, the mortar will scatter due to the action of gravity and the scraping action of the lower roller shaft. Not only will it pollute the internal environment of the plant and increase the cost of manual cleaning, but also the mortar scattered in the silo will mix into the finished aggregate, affecting the quality of the finished aggregate produced.

[0003] At present, there is no special treatment technology for the mortar of the belt conveyor in the wet production of the sand and gravel processing system in the prior art. For the belt cleaning technology, the prior art, such as the utility model with publication number CN217534240U, uses a vibrating scraper to remove the material falling from the return section of the belt conveyor. This method will damage the belt and is not conducive to the stable operation of the belt conveyor. The invention with publication number CN118850680A uses a rotating nozzle to continuously spray water to flush the return section of the belt conveyor. This method consumes a large amount of water and has poor economic and environmental performance, and the circulating pool cannot effectively recover fine sand.

[0004] In summary, the prior art has many shortcomings in dealing with the mortar problem of the belt conveyor in the wet production of the sand and gravel processing system. Therefore, there is an urgent need for a cleaning and recycling system that can effectively clean the mortar on the belt conveyor, avoid environmental pollution, and meet the environmental protection requirements. SUMMARY

[0005] The present application aims to provide a mortar cleaning and recycling system of a belt conveyor for sand and gravel wet production. The first image acquisition device captures images of the belt return section in real time, accurately determines the degree of pollution through image grayscale recognition, and controls the first high-pressure nozzle group to direct water flushing through the first electromagnetic valve when the pollution value exceeds the set threshold. This realizes "on-demand cleaning". The water flushing cleaning method avoids affecting the service life and stable operation of the belt conveyor, and intelligently controls the cleaning frequency. Compared with the traditional continuous flushing scheme, it is more water-saving, and the economic and environmental performance is significantly improved. The technical problem of how to effectively clean the mortar on the belt conveyor, avoid environmental pollution, and meet the environmental protection requirements is solved.

[0006] The present application is achieved by the following technical solutions: a mortar cleaning and recycling system of a belt conveyor for sandstone wet production, comprising a controller, a mortar collecting groove arranged below the belt conveyor and having an open top, a first image collecting device arranged on the open side of the mortar collecting groove and having an upward collecting direction, a first flushing device arranged on the open side of the mortar collecting groove and having an upward water outlet direction, and a mortar separating and recycling device arranged downstream of the mortar collecting groove, the first image collecting device and the first flushing device are both electrically connected with the controller,

[0007] The first image collecting device is used to acquire the surface information of the return section of the belt conveyor and send the surface information of the return section of the belt conveyor to the controller, the controller is used to analyze the pollution degree based on the received surface information of the return section of the belt conveyor, and a first control instruction is issued to the first flushing device when the result of the pollution degree analysis is greater than a preset value, the first flushing device is used to perform the belt conveyor return section cleaning operation after receiving the first control instruction, and the mortar separating and recycling device is used to separate the mortar into water and fine sand.

[0008] According to a preferred embodiment, the system further comprises a second image collecting device and a second flushing device arranged in the mortar collecting groove, and the second image collecting device and the second flushing device are both electrically connected with the controller;

[0009] The second image collecting device is used to acquire the accumulation information of the mortar in the mortar collecting groove and send the accumulation information to the controller, and the controller analyzes the accumulation amount based on the received accumulation information of the mortar in the mortar collecting groove, and a second control instruction is issued to the second flushing device when the result of the accumulation amount analysis is greater than a preset value, and the second flushing device performs the internal cleaning operation of the mortar collecting groove after receiving the second control instruction.

[0010] According to a preferred embodiment, the mortar separating and recycling device is provided with a mortar inlet, a clean water outlet and a fine sand outlet, the mortar inlet is connected to the outlet of the mortar collecting groove through a first pipeline, the first pipeline is provided with a first slurry pump, the fine sand outlet is connected to a fine sand recycling machine through a second pipeline, the second pipeline is provided with a second slurry pump, and the first slurry pump and the second slurry pump are both electrically connected with the controller.

[0011] According to a preferred embodiment, the mortar separating and recycling device comprises a hollow shell, a stirrer is arranged outside the hollow shell, the stirrer is electrically connected with the controller, an output shaft of the stirrer penetrates through the hollow shell and extends into the hollow shell, and a stirring blade is arranged at the end of the stirrer.

[0012] According to a preferred embodiment, a partition is arranged in the hollow shell, the partition is arranged vertically and connected with the bottom of the inner cavity of the hollow shell, the height of the partition is lower than the height of the inner cavity of the hollow shell, the top of the partition is connected with a filter screen, the filter screen is arranged vertically and connected with the top of the inner cavity of the hollow shell, the partition and the filter screen divide the inner cavity of the hollow shell into a fine sand collecting bin and a filtered water pool, the agitator is arranged outside the fine sand collecting bin, the stirring blade is arranged at the bottom of the fine sand collecting bin, the mortar inlet is arranged at the top of the fine sand collecting bin away from the filtered water pool, the fine sand outlet is arranged at the bottom of the fine sand collecting bin away from the filtered water pool, and the clean water outlet is arranged at the top of the filtered water pool away from the fine sand collecting bin.

[0013] According to a preferred embodiment, a bin position sensor is arranged at the top of the inner cavity of the fine sand collecting bin, and the bin position sensor is electrically connected with the controller.

[0014] According to a preferred embodiment, the mortar collecting groove is arranged in parallel below the belt conveyor, and the longitudinal section of the length direction of the mortar collecting groove is a trapezoidal groove.

[0015] According to a preferred embodiment, a plurality of cleaning windows are arranged at the side walls of the mortar collecting groove.

[0016] According to a preferred embodiment, the first image acquisition device and the second image acquisition device are arranged at the side of the mortar collecting groove away from the outlet, the first image acquisition device and the second image acquisition device are arranged in overlap, the first image acquisition device is arranged above the second image acquisition device, and the outer sides of the first image acquisition device and the second image acquisition device are provided with a protection mechanism.

[0017] According to a preferred embodiment, the first flushing device is arranged at the top of the mortar collecting groove, and is composed of a first electromagnetic valve and a first high-pressure nozzle, the first electromagnetic valve is electrically connected with the controller.

[0018] The second flushing device is arranged at the inner side wall of the mortar collecting groove, and is composed of a second electromagnetic valve and a second high-pressure nozzle, the second electromagnetic valve is electrically connected with the controller.

[0019] The mortar cleaning and recycling system of the belt conveyor for sand and stone wet production provided by the application has at least the following advantages and beneficial effects:

[0020] (1) Through the first image acquisition device, the image of the belt return section is shot in real time, the pollution degree is accurately determined through image gray recognition, when the pollution value exceeds the set threshold, the first high-pressure spray head group is controlled by the first electromagnetic valve to realize directional water flushing, thus realizing "on-demand cleaning", the water flushing cleaning mode avoids affecting the service life and operation stability of the belt conveyor, and through intelligent control of the cleaning frequency, it is more water-saving than the traditional continuous flushing scheme, and the economic efficiency and environmental protection are significantly improved;

[0021] (2) Through the second image acquisition device, the image of the mortar accumulation in the mortar collection tank is shot in real time, the accumulation height is determined through image analysis, when the stockpile height reaches the set value, the controller drives the second electromagnetic valve to open the second high-pressure spray head group to flush the mortar in the mortar collection tank, thus avoiding the blockage of the tank body caused by long-term accumulation of mortar, realizing the self-cleaning and intelligent operation and maintenance of the collection tank, and saving the labor cleaning cost;

[0022] (3) The mortar in the fine sand collection bin is continuously stirred by the stirrer, which can prevent the fine sand from being deposited and hardened, and the physical separation structure of the partition plate and the filter screen can make the fine sand in the mortar deposit at the bottom of the bin under the action of gravity, and the water can pass through the filter screen into the filter tank for sedimentation. This water and sand separation method can significantly improve the separation efficiency, thereby improving the fine sand recovery rate and realizing the reuse of water resources;

[0023] (4) The mortar storage in the fine sand collection bin is monitored in real time by the bin position sensor, when the mortar accumulates to the set bin position, the controller automatically starts the stirrer for water and sand separation treatment, and controls the second slurry pump to deliver the fine sand to the recycling machine, and stops automatically when the lower limit of the bin position is reached; This function realizes the "full discharge and quantitative control" of fine sand recovery, which is more energy-saving than the traditional timed operation mode, and can prevent the separation effect from being reduced due to overfilling;

[0024] (5) The trapezoidal longitudinal section mortar collection tank expands the opening collection range, which can prevent the factory floor from being polluted from the source. In addition, the side wall cleaning window can support quick cleaning of internal residual debris without disassembling the tank body, thereby shortening the maintenance time;

[0025] (6) The setting of the first image acquisition device and the second image acquisition device outside the protection mechanism can prevent mortar and water mist from eroding, and ensure the clarity of image acquisition. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The overall structure schematic diagram of the mortar cleaning and recycling system of the belt conveyor for sand and stone wet production provided by the embodiment 1 is shown in the figure;

[0027] Figure 2 For Figure 1 The A-A cross-sectional view in the middle;

[0028] Figure 3 for Figure 1 Middle BB cross-section;

[0029] Figure 4 A schematic diagram of the overall structure of the slurry separation and recovery device provided in Example 3 of the present invention;

[0030] Reference numerals: 100 - controller, 200 - slurry collecting tank, 210 - cleaning window, 220 - protection mechanism, 230 - beam narrowing collection port, 300 - first image acquisition device, 400 - first flushing device, 410 - first solenoid valve, 420 - first high-pressure nozzle group, 500 - slurry separation and recovery device, 510 - hollow shell, 511 - slurry inlet, 512 - clean water outlet, 513 - fine sand outlet, 514 - Silt outlet, 515-partition, 516-filter screen, 517-fine sand collection bin, 518-filter water tank, 519-bin position sensor, 520-first slurry pump, 530-second slurry pump, 540-third slurry pump, 550-agitator, 551-agitation blade, 600-second image acquisition device, 700-second flushing device, 710-second solenoid valve, 720-second high-pressure nozzle group, 800-belt conveyor. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Example 1

[0033] In order to effectively clean the mortar on the belt conveyor and avoid environmental pollution caused by mortar falling, thereby meeting environmental protection requirements, the present invention proposes a mortar cleaning and recovery system for a belt conveyor for wet sand and gravel production.

[0034] The present embodiment is a slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production, such as Figure 1 As shown, it includes a controller 100, a mortar collecting trough 200 arranged below the belt conveyor 800 and with an open top, a first image acquisition device 300 arranged at the open side of the mortar collecting trough 200 with an acquisition direction facing upward, a first flushing device 400 arranged at the open side of the mortar collecting trough 200 with an water outlet direction facing upward, and a mortar separation and recovery device 500 arranged downstream of the mortar collecting trough 200.

[0035] Further, the first image acquisition device 300 and the first flushing device 400 are electrically connected with the controller 100, interact with the controller 100 in data, and are controlled by the controller 100.

[0036] In the embodiment, the first image acquisition device 300 is a high-speed camera, which is arranged directly below the return section of the belt conveyor. Preferably, the shooting angle of the high-speed camera forms an obtuse angle with the running direction of the return section of the belt conveyor, but is not limited to this, for example, can also be a right angle. In the embodiment, the high-speed camera is used to shoot the surface information of the return section of the belt conveyor 800 and send the surface information of the return section of the belt conveyor 800 to the controller 100 for processing.

[0037] Further, the controller 100 is used to analyze the pollution degree based on the received surface information of the return section of the belt conveyor 800, and issue a first control instruction to the first flushing device 400 when the result of the pollution degree analysis is greater than a preset value.

[0038] In the embodiment, the controller 100 is built-in with a pollution degree determination algorithm, which specifically identifies the mortar pixels in the surface image of the return section of the belt conveyor 800 and accumulates them. When the total area of the mortar exceeds 30% of the total area of the image, the controller 100 issues a first control instruction to the first flushing device 400.

[0039] Further, the first flushing device 400 is used to perform the belt conveyor 800 return section cleaning operation after receiving the first control instruction.

[0040] In the embodiment, the first flushing device 400 is arranged on the top of the mortar collecting tank 200 and is composed of a first electromagnetic valve 410 and a first high-pressure nozzle group 420. The water inlet of the first high-pressure nozzle group 420 is connected with a high-pressure water pipe, and the first high-pressure nozzle group 420 is arranged on the steel structure support arranged above the mortar collecting tank 200 in a transverse direction, for example, a plurality of groups of the first high-pressure nozzle group 420 are arranged along the length direction of the mortar collecting tank 200, and each group of the first high-pressure nozzle group 420 is spaced apart by six high-pressure nozzles in the width direction of the mortar collecting tank 200. The first electromagnetic valve 410 is arranged on the high-pressure water pipe, and the first electromagnetic valve 410 is electrically connected with the controller 100. The first electromagnetic valve 410 controls the first high-pressure nozzle group 420 to discharge water upward to flush the mortar of the return section of the belt conveyor.

[0041] Further, the mortar separation and recovery device 500 is used to separate and process the mortar to obtain clean water and fine sand.

[0042] Specifically, the embodiment realizes real-time shooting of the belt return section image through the first image acquisition device 300, accurately determines the pollution degree through image gray recognition, and realizes "on-demand cleaning" by controlling the first high-pressure spray head group 420 to direct water flushing through the first electromagnetic valve 410 when the pollution value exceeds the set threshold. The water flushing cleaning method avoids affecting the service life and operation stability of the belt conveyor, and through intelligent control of the cleaning frequency, it is more water-saving than the traditional continuous flushing scheme, and the economic efficiency and environmental protection are significantly improved.

[0043] Embodiment 2

[0044] Based on the technical scheme provided in embodiment 1, the structure of the mortar collecting tank 200 is further described:

[0045] In the embodiment, the mortar collecting tank 200 is arranged in parallel directly below the belt conveyor 800, as shown in Figure 2 and Figure 3 The length direction of the longitudinal section is a trapezoidal tank. Specifically, the trapezoidal longitudinal section mortar collecting tank 200 expands the opening collection range, and eliminates the factory floor pollution from the source. In addition, the side walls of the mortar collecting tank 200 are provided with a plurality of cleaning windows 210. Specifically, the setting of the side wall cleaning window 210 can support quick cleaning of internal residual debris without disassembling the tank body, and shorten the maintenance time.

[0046] In order to realize the automatic cleaning of the mortar in the mortar collecting tank 200, the cleaning and recycling system provided in the embodiment further includes a second image acquisition device 600 and a second flushing device 700 arranged in the mortar collecting tank 200. The second image acquisition device 600 and the second flushing device 700 are electrically connected with the controller 100.

[0047] Specifically, the second image acquisition device 600 is a camera, which is arranged inside the mortar collecting tank 200, used to obtain the accumulation information of the mortar in the mortar collecting tank 200, and send the accumulation information to the controller 100; preferably, the first image acquisition device 300 and the second image acquisition device 600 are arranged on the side away from the outlet in the mortar collecting tank 200, and the first image acquisition device 300 and the second image acquisition device 600 are arranged overlappingly, the first image acquisition device 300 is located above the second image acquisition device 600, and the outer sides of the first image acquisition device 300 and the second image acquisition device 600 are provided with a protection mechanism 220 to prevent mortar and water mist from eroding and ensure the clarity of image acquisition.

[0048] Further, the controller 100 performs accumulation amount analysis based on the received accumulation information of the mortar in the mortar collection tank 200, and when the result of the accumulation amount analysis is greater than a preset value, a second control instruction is issued to the second flushing device 700.

[0049] In this embodiment, the controller 100 is built-in with a mortar accumulation height determination algorithm, specifically, the pixels in the returned image of the second image acquisition image are identified and accumulated, and when the average height of the mortar calculated from the total area of the mortar is more than one-third of the height of the mortar collection tank 200, the controller 100 issues a second control instruction to the second flushing device 700.

[0050] Further, the second flushing device 700 performs internal cleaning of the mortar collection tank 200 after receiving the second control instruction.

[0051] In this embodiment, the second flushing device 700 is arranged on the inner side wall of the mortar collection tank 200, and is composed of a second electromagnetic valve 710 and a second high-pressure nozzle group 720. The water inlet of the second high-pressure nozzle group 720 is connected to a high-pressure water supply pipe, and is arranged along the axis direction of the mortar collection tank 200. There are multiple groups of second high-pressure nozzle groups 720 arranged along the length direction of the mortar collection tank 200. Each second high-pressure nozzle group 720 contains no more than 6 high-pressure nozzles in the longitudinal section of the mortar collection tank 200 along the length direction. The included angle between the high-pressure nozzles and the side wall of the mortar collection tank 200 is no more than 30 degrees. The distance between each second high-pressure nozzle group 720 is no more than 2 meters. The second electromagnetic valve 710 is arranged on the high-pressure water supply pipe, and is electrically connected to the controller 100. The second electromagnetic valve 710 controls the water outlet of the second high-pressure nozzle group 720 to flush the mortar in the mortar collection tank 200.

[0052] Specifically, the second image acquisition device 600 is used to take real-time images of the mortar accumulation in the mortar collection tank 200, and the image analysis is used to determine the accumulation height. When the accumulation height reaches a set value, the controller 100 drives the second electromagnetic valve 710 to open the second high-pressure nozzle group 720 to flush the mortar in the mortar collection tank 200. In this way, the blockage of the tank body caused by long-term accumulation of the mortar can be avoided, and the self-cleaning and intelligent operation and maintenance of the collection tank can be realized, thereby saving the cost of manual cleaning.

[0053] Embodiment 3

[0054] In this embodiment, the mortar separation and recovery device 500 is further described based on any one of the technical solutions provided in Embodiments 1 to 2.

[0055] In this embodiment, referring to Figure 4As shown, the mortar separation and recovery device 500 is provided with a mortar inlet 511, a clean water outlet 512 and a fine sand outlet 513; wherein the mortar inlet 511 is connected to the outlet of the mortar collection tank 200 through a first pipeline, and in the embodiment, the outlet of the mortar collection tank 200 is provided as a narrow collection port 230, and the outlet of the narrow collection port 230 is connected to the inlet of the first pipeline, and the first pipeline is provided with a first slurry pump 520, and the first slurry pump 520 is electrically connected to the controller 100, and the mortar collected at the narrow collection port 230 by the second flushing device 700 is pumped into the mortar separation and recovery device 500 through the mortar inlet 511 by the first slurry pump 520, so as to realize self-cleaning of the mortar collection tank 200.

[0056] Further, the mortar separation and recovery device 500 comprises a hollow shell 510, and the outer side of the hollow shell 510 is provided with an agitator 550, and the agitator 550 is electrically connected to the controller 100, and the output shaft of the agitator 550 penetrates through the hollow shell 510 and extends into the hollow shell 510, and the end of the agitator 550 is provided with stirring blades 551.

[0057] Specifically in the embodiment, the hollow shell 510 is provided with a partition plate 515 made of a water-impermeable material; further, the partition plate 515 is vertically arranged and connected to the inner cavity bottom of the hollow shell 510, and the height of the partition plate 515 is lower than the height of the inner cavity of the hollow shell 510, and the top of the partition plate 515 is connected to a filter screen 516, and the filter screen 516 is vertically arranged and connected to the inner cavity top of the hollow shell 510; in the embodiment, the inner cavity of the hollow shell 510 is divided into a fine sand collection bin 517 and a filtered water pool 518 by the partition plate 515 and the filter screen 516, and the agitator 550 is arranged outside the fine sand collection bin 517, and the stirring blades 551 are located at the bottom of the fine sand collection bin 517.

[0058] Specifically, the mortar in the fine sand collection bin 517 is continuously stirred by the agitator 550, so as to prevent the fine sand from being deposited and hardened, and the physical separation structure of the partition plate 515 and the filter screen 516 is used to make the fine sand in the mortar deposited to the bottom of the bin under the action of gravity, and the water enters the filtered water pool 518 for deposition through the filter screen 516, and this water and sand separation method can significantly improve the separation efficiency, and further improve the fine sand recovery rate and realize the reuse of water resources.

[0059] Further, the mortar inlet 511 is arranged at the top of the fine sand collecting bin 517 away from the filtering water pool 518, the fine sand outlet 513 is arranged at the bottom of the fine sand collecting bin 517 away from the filtering water pool 518, and the clean water outlet 512 is arranged at the top of the filtering water pool 518 away from the fine sand collecting bin 517. In the embodiment, the fine sand outlet 513 is connected to the fine sand recycling machine through a second pipeline, and a second slurry pump 530 is arranged on the second pipeline. The first slurry pump 520 and the second slurry pump 530 are electrically connected to the controller 100, so that the fine sand at the bottom of the fine sand collecting bin 517 is pumped into the fine sand recycling machine through the fine sand outlet 513 by the second slurry pump 530, and the recycling of the fine sand is realized.

[0060] In the embodiment, the water separated in the fine sand collecting bin 517 enters the filtering water pool 518 through the filter screen 516 at the upper part of the partition plate 515, and after sedimentation in the filtering water pool 518, the clean water at the top is collected into the clean water pool through the overflow groove at the top of the filtering water pool 518, so that the water resource is recycled. In addition, the bottom of the filtering water pool 518 is also provided with a sludge outlet 514, which is connected to the sewage pool through a corresponding connecting pipeline, and a third slurry pump 540 is arranged on the connecting pipeline. The third slurry pump 540 is electrically connected to the controller 100, so that the sludge deposited at the bottom of the filtering water pool 518 is pumped into the sewage pool through the third slurry pump 540, and the self-cleaning of the filtering water pool 518 is realized.

[0061] Further, the top of the inner cavity of the fine sand collecting bin 517 is provided with a bin position sensor 519, and the bin position sensor 519 is electrically connected to the controller 100. Specifically, the bin position sensor 519 is used to monitor the mortar storage in the fine sand collecting bin 517 in real time, when the mortar is accumulated to a set position, the controller 100 automatically starts the stirrer 550 to perform water-sand separation treatment, and controls the second slurry pump 530 to deliver the fine sand to the recycling machine, and stops automatically when the lower limit of the bin position is reached. The function realizes the “full discharge and quantitative control” of fine sand recycling, is more energy-saving than the traditional time-based operation mode, and can prevent the separation effect from being reduced due to overflow of the full bin.

[0062] It is worth mentioning that multiple mortar inlets 511 can be arranged on the fine sand collecting bin 517 to simultaneously realize the cleaning and recycling of multiple belt machines, which will not be described in detail here.

[0063] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A slurry cleaning and recovery system for a belt conveyor used in wet sand and gravel production, characterized in that: The invention comprises a controller (100), a mortar collecting trough (200) arranged below a belt conveyor (800) and having an open top, a first image acquisition device (300) arranged on the open side of the mortar collecting trough (200) and having an upward acquisition direction, a first flushing device (400) arranged on the open side of the mortar collecting trough (200) and having an upward water discharge direction, and a mortar separation and recovery device (500) arranged downstream of the mortar collecting trough (200), wherein the first image acquisition device (300) and the first flushing device (400) are both electrically connected to the controller (100). The first image acquisition device (300) is used to obtain surface information of the return section of the belt conveyor (800) and send the surface information of the return section of the belt conveyor (800) to the controller (100). The controller (100) is used to perform a pollution degree analysis based on the received surface information of the return section of the belt conveyor (800). When the result of the pollution degree analysis is greater than a preset value, a first control instruction is sent to the first flushing device (400). The first flushing device (400) is used to perform a cleaning operation of the return section of the belt conveyor (800) after receiving the first control instruction. The slurry separation and recovery device (500) is used to perform water-sand separation processing on the fed slurry to obtain clean water and fine sand.

2. The slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production according to claim 1, characterized in that: The system further comprises a second image acquisition device (600) and a second flushing device (700) arranged in the mortar collection tank (200), wherein the second image acquisition device (600) and the second flushing device (700) are both electrically connected to the controller (100); The second image acquisition device (600) is used to obtain the accumulation information of the mortar in the mortar collecting tank (200), and send the accumulation information to the controller (100). The controller (100) performs an accumulation amount analysis based on the received accumulation information of the mortar in the mortar collecting tank (200). When the result of the accumulation amount analysis is greater than a preset value, a second control instruction is sent to the second flushing device (700). After receiving the second control instruction, the second flushing device (700) performs a cleaning operation inside the mortar collecting tank (200).

3. The slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production according to claim 1, characterized in that: The slurry separation and recovery device (500) is provided with a slurry inlet (511), a clean water outlet (512), and a fine sand outlet (513); the slurry inlet (511) is connected to the outlet of the slurry collecting tank (200) via a first pipe; a first slurry pump (520) is provided on the first pipe; the fine sand outlet (513) is connected to a fine sand recovery machine via a second pipe; a second slurry pump (530) is provided on the second pipe; and both the first slurry pump (520) and the second slurry pump (530) are electrically connected to a controller (100).

4. The slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production according to claim 3, characterized in that: The slurry separation and recovery device (500) comprises a hollow shell (510), an agitator (550) is provided on the outside of the hollow shell (510), the agitator (550) is electrically connected to the controller (100), an output shaft of the agitator (550) passes through the hollow shell (510) and extends into the hollow shell (510), and a stirring blade (551) is provided at the end of the agitator (550).

5. The slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production according to claim 4, characterized in that: A partition (515) is provided in the hollow shell (510), the partition (515) is vertically arranged and connected to the bottom of the inner cavity of the hollow shell (510), the height of the partition (515) is lower than the height of the inner cavity of the hollow shell (510), the top of the partition (515) is connected to a filter (516), the filter (516) is vertically arranged and connected to the top of the inner cavity of the hollow shell (510), the partition (515) and the filter (516) divide the inner cavity of the hollow shell (510) into a fine sand collection bin (517) and a filtered water pool (518), the agitator (550) is arranged on the outside of the fine sand collection bin (517), and the agitating blade (551) is located at the bottom of the fine sand collection bin (517), the slurry inlet (511) is arranged at the top of the fine sand collection bin (517) away from the filter water pool (518), the fine sand outlet (513) is arranged at the bottom of the fine sand collection bin (517) away from the filter water pool (518), and the clean water outlet (512) is arranged at the top of the filter water pool (518) away from the fine sand collection bin (517).

6. The slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production according to claim 5, characterized in that: A bin position sensor (519) is provided at the top of the inner cavity of the fine sand collection bin (517), and the bin position sensor (519) is electrically connected to the controller (100).

7. The slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production according to claim 1, characterized in that: The mortar collecting trough (200) is arranged in parallel directly below the belt conveyor (800), and its longitudinal cross section in the length direction is a trapezoidal trough.

8. The slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production according to claim 1, characterized in that: A plurality of cleaning windows (210) are arranged at intervals on the side wall of the slurry collecting tank (200).

9. The slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production according to claim 2, characterized in that: The first image acquisition device (300) and the second image acquisition device (600) are both arranged on a side of the mortar collection tank (200) away from the outlet, and the first image acquisition device (300) and the second image acquisition device (600) are arranged in an overlapping manner, the first image acquisition device (300) is located above the second image acquisition device (600), and protective mechanisms (220) are provided on the outsides of the first image acquisition device (300) and the second image acquisition device (600).

10. The slurry cleaning and recovery system for a belt conveyor for wet sand and gravel production according to claim 2, characterized in that: The first flushing device (400) is arranged on the top of the slurry collecting tank (200), and is composed of a first electromagnetic valve (410) and a first high-pressure nozzle group (420), and the first electromagnetic valve (410) is electrically connected to the controller (100); The second flushing device (700) is arranged on the inner wall of the slurry collecting tank (200) and is composed of a second solenoid valve (710) and a second high-pressure nozzle group (720). The second solenoid valve (710) is electrically connected to the controller (100).

Images