Device for extracting micro-plastics in sediments in coal mining subsidence area

Abstract

The utility model relates to the technical field of micro-plastic extraction equipment, and discloses an extraction device for micro-plastics in sediments in a coal mining subsidence area, which comprises a device shell, a filter cartridge is arranged in the device shell, a cover plate is hinged to the upper end of the device shell through a fixing sleeve block, the cover plate is covered in the filter cartridge, a heating device is arranged in the filter cartridge, and the heating device is connected with the filter cartridge. A bidirectional transmission mechanism is arranged at the bottom end of the filter cartridge, and a scraping mechanism is arranged at the bottom end in the filter cartridge. The technical problem that damage to a motor is reduced under the inertia acting force of an internal solution during forward and reverse starting of the device is solved. According to the device, fluid shearing force in the positive direction and the negative direction is generated inside under the action of the bidirectional transmission mechanism, so that separation of internal micro-plastics and the like is accelerated, the device can be automatically heated and dried after an internal solution is discharged, and the attached micro-plastics and the like are rapidly extracted by detaching the scraping plate; and the damage to the driving motor can be further reduced through a bidirectional transmission mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of microplastic extraction equipment, in particular to a device for extracting microplastics from sediments in a coal mining subsidence area. Background Art

[0002] Microplastics refer to plastic substances with a particle size of less than 5mm. Microplastics not only release toxic substances such as plasticizers, flame retardants, and antioxidants, but when microplastics are deposited in water and ingested by aquatic organisms, they will have toxic responses to the organisms. For the restoration of coal mining subsidence areas, the extraction and treatment of microplastics has become urgent.

[0003] The Chinese utility model patent with the announcement number CN107281813B discloses a device for extracting microplastics from sediments and an extraction method thereof, including a filter cartridge, a liquid storage tank, a motor, a base, a mesh screen, and a transmission shaft; wherein the filter cartridge is installed in the liquid storage tank, a mesh screen is provided at the upper opening of the filter cartridge, the liquid storage tank and the motor are installed on the base, and a row of holes that are interlinked with the filter cartridge are provided at the bottom of the liquid storage tank; the motor is connected to one end of the transmission shaft through a rotating shaft, and the other end of the transmission shaft passes through the row of holes and is connected to the bottom of the filter cartridge. Advantages of the invention: 1. The dispersion of muddy sediments and the elution effect of samples are significantly improved; 2. The sample recovery rate is improved; 3. The extraction efficiency is significantly high; 4. The extraction time is shortened; 5. Manpower is saved.

[0004] Regarding the above-mentioned related technologies, the utility model applicant believes that there are the following defects:

[0005] When the above-mentioned device is performing the dispersion and cleaning process, it is driven forward and reversely by the motor, so that the solution in the device can achieve better dispersion and elution of microplastics under the action of the forward and reverse fluid shear forces. The above-mentioned device directly drives the motor drive gear to mesh with the gear at the bottom of the filter cartridge, so that when performing the forward and reverse conversion, the internal solution will continue to rotate in the original direction under the action of inertia. At this time, the motor will be subjected to a large inertial force and forced to rotate in the opposite direction, thereby aggravating the damage to the motor, reducing the service life of the motor, and increasing maintenance costs. Utility Model Content

[0006] In order to solve the technical problem of reducing the damage to the motor under the inertial force of the internal solution when the device is started in forward and reverse directions, the utility model provides a device for extracting microplastics in sediments in coal mining subsidence areas.

[0007] The utility model is implemented by the following technical scheme: a device for extracting microplastics from sediments in coal mining subsidence areas, comprising a device shell, a filter cartridge is arranged inside the device shell, and a cover plate is hingedly connected to the upper end of the device shell through a fixed sleeve block, the cover plate covers the filter cartridge, a heating device is arranged inside the filter cartridge, a two-way transmission mechanism is arranged at the bottom end of the filter cartridge, and a scraping mechanism is arranged at the bottom end of the filter cartridge;

[0008] The bidirectional transmission mechanism includes a driven connecting shaft, which is rotatably connected to the middle of the bottom end of the filter cartridge, and the bottom end of the driven connecting shaft is fixedly connected to a lower driven gear, and the driven connecting shaft rotates in an upper driven gear, and the upper driven gear is fixedly connected to the middle of the bottom end of the filter cartridge.

[0009] Through the above technical scheme, the sediment soil to be extracted can be placed inside the device by starting it, and the dispersant solution can be placed in the device shell, and then the two-way transmission mechanism can be started. The sediment soil and microplastics in the filter cartridge can be better separated under the two-way fluid shear force brought about by the two-way transmission. The internal microplastics and metal particles can be better separated, and the internal solution can be controlled and discharged from the drainage control pipe, and then heated and dried through the filter cartridge. Then, by starting the device again, the microplastics can be quickly removed through the scraper plate, which greatly improves the extraction efficiency of the device.

[0010] As a further improvement of the above scheme, filter holes are evenly opened on the outer wall and bottom of the filter cartridge, and the bottom end of the filter cartridge is located outside the upper driven gear and fixedly connected to a connecting block, which is rotatably connected to the inner wall of the bottom end of the device housing.

[0011] As a further improvement of the above scheme, the middle parts of the upper driven gear and the lower driven gear are meshed and connected to the upper and lower ends of the driving gear, and the driving gear is connected to a driving motor through an output shaft, and the driving motor is fixedly installed at a corresponding position at the bottom end of the device housing.

[0012] Through the above technical solution, the lower driven gear and the upper driven gear are respectively meshed at the upper and lower ends of the driving gear, so that the driving motor can be driven to realize the synchronous reverse rotation of the filter cartridge and the upper end of the driven connecting shaft, thereby increasing the reverse shear force generated by the equipment.

[0013] As a further improvement of the above solution, a connecting hole is provided at the bottom end of the device housing away from the driving motor, and a drainage control pipe is installed in the connecting hole.

[0014] Through the above technical solution, the drainage control pipe can realize the discharge control of the internal solution and reuse it by collection and filtration.

[0015] As a further improvement of the above scheme, the upper inner wall of the device shell is symmetrically connected to rollers through a fixed sleeve for fixed rotation, and the inner sides of the two groups of rollers are rollingly connected in the limiting ring groove, and the limiting ring groove is opened at the corresponding position of the outer wall of the filter cartridge.

[0016] Through the above technical solution, it can be ensured that when the device is performing a separation and rotation operation, the stability can be further guaranteed by the rolling limit of the limiting ring groove and the roller, and the rotation connection between the bottom end connecting the rotating block and the bottom end of the device shell.

[0017] As a further improvement of the above solution, the scraping mechanism includes insertion grooves, which are symmetrically arranged at the upper end of the driven connecting shaft, and insertion plates are inserted and connected in both groups of the insertion grooves.

[0018] As a further improvement of the above solution, scraping plates are fixedly connected to the outer sides of the two groups of plug plates, and the outer walls of the scraping plates are in contact with the inner wall of the filter cartridge.

[0019] Through the above technical scheme, when the bidirectional transmission mechanism is started, the two sets of internal scraping plates can be driven to drive the solution to rotate in the opposite direction of the filter cartridge, thereby further improving the separation effect of the device under the reverse shear force, and when the internal solution is processed and dried, the scraping plates can be removed to facilitate the extraction of microplastics attached to the scraping plates.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The utility model places soil to be processed in the filter cartridge and pours an appropriate amount of separation solution into the device casing. Under the action of the bidirectional transmission mechanism, the fluid shear force in positive and negative directions can be generated inside the filter cartridge, thereby accelerating the separation of internal microplastics. After the internal solution is discharged, the device can heat and dry itself, and the scraper plate can be removed to quickly extract the attached microplastics. The damage to the drive motor can also be further reduced through the bidirectional transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall structure of a device for extracting microplastics from sediments in coal mining subsidence areas provided in Example 1 of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a partial section of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the bidirectional transmission mechanism of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the scraping mechanism of the utility model.

[0026] Description of main symbols:

[0027] 1. Device housing; 110. Roller; 111. Connecting hole; 2. Cover plate; 3. Filter cartridge; 310. Filter hole; 311. Connecting rotating block; 312. Upper driven gear; 313. Limiting ring groove; 4. Drainage control pipe; 5. Driving motor; 510. Driving gear; 6. Driven connecting shaft; 610. Lower driven gear; 611. Insertion groove; 612. Insertion plate; 613. Scraping plate. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0029] Embodiment 1:

[0030] Please combine Figure 3 , a device for extracting microplastics from sediments in coal mining subsidence areas of this embodiment comprises a device housing 1, a filter cartridge 3 is arranged inside the device housing 1, and a cover plate 2 is hingedly connected to the upper end of the device housing 1 through a fixed sleeve block, the cover plate 2 covers the filter cartridge 3, a heating device is arranged inside the filter cartridge 3, a two-way transmission mechanism is arranged at the bottom end of the filter cartridge 3, and a scraping mechanism is arranged at the bottom end of the filter cartridge 3;

[0031] The bidirectional transmission mechanism includes a driven connecting shaft 6, which is rotatably connected to the middle of the bottom end of the filter cartridge 3. The bottom end of the driven connecting shaft 6 is fixedly connected to a lower driven gear 610. The driven connecting shaft 6 rotates in an upper driven gear 312, and the upper driven gear 312 is fixedly connected to the middle of the bottom end of the filter cartridge 3.

[0032] Filter holes 310 are evenly opened on the outer wall and bottom of the filter cartridge 3, and a connecting rotating block 311 is fixedly connected to the bottom end of the filter cartridge 3 outside the upper driven gear 312, and the connecting rotating block 311 is rotatably connected to the inner wall of the bottom end of the device housing 1.

[0033] The upper driven gear 312 and the lower driven gear 610 are meshed and connected to the upper and lower ends of the driving gear 510, and the driving gear 510 is connected to the driving motor 5 through the output shaft. The driving motor 5 is fixedly installed at the corresponding position of the bottom end of the device housing 1.

[0034] A communication hole 111 is provided at the bottom of the device housing 1 away from the driving motor 5 , and a drainage control pipe 4 is installed in the communication hole 111 .

[0035] The upper inner wall of the device housing 1 is symmetrically connected to the rollers 110 through a fixed sleeve, and the inner sides of the two groups of rollers 110 are both rollingly connected in the limiting ring groove 313, which is opened at the corresponding position of the outer wall of the filter cartridge 3.

[0036] The implementation principle of a device for extracting microplastics from sediments in a coal mining subsidence area in the embodiment of the present application is as follows:

[0037] An appropriate amount of soil to be extracted is placed in the filter cartridge 3, and an appropriate amount of separation solution is placed in the device housing 1. The cover plate 2 is then hingedly rotated to cover the upper end of the filter cartridge 3, and the drainage control pipe 4 is closed to seal the inside of the device housing 1. The drive motor 5 is then started, so that the drive motor 5 will drive the entire filter cartridge 3 to rotate stably under the rotation limit of the connection rotating block 311 at the bottom and the device housing 1 and the rotation limit of the limit ring groove 313 and the roller 110 under the transmission connection with the upper driven gear 312;

[0038] At the same time, under the transmission of the driving gear 510 and the lower driven gear 610, the entire driven connecting shaft 6 is driven to rotate in the opposite direction of the filter cartridge 3 in the upper driven gear 312, and the internal scraping mechanism is driven to rotate, so that the internal microplastics can be separated more efficiently under the internal centrifugal force and the shear force of the two opposite fluids;

[0039] After the separation operation is completed, the excess solution inside can be recovered by opening the drainage control pipe 4, and then the internal heating component of the filter cartridge 3 is started to dry the inside.

[0040] Embodiment 2:

[0041] Combination Figure 4 Based on Example 1, this embodiment is further improved in that:

[0042] The scraping mechanism includes inserting grooves 611 , which are symmetrically arranged at the upper end of the driven connecting shaft 6 , and inserting plates 612 are inserted and connected in two groups of the inserting grooves 611 .

[0043] The outer sides of the two groups of plug plates 612 are fixedly connected with scraping plates 613 , and the outer walls of the scraping plates 613 are in contact with the inner wall of the filter cartridge 3 .

[0044] The implementation principle of this embodiment is:

[0045] After the drying operation is completed, the cover plate 2 can be opened, and the scraper plate 613 can be lifted up to release the plug-in connection between the plug-in plate 612 and the plug-in groove 611, so that the microplastics attached to the scraper plate 613 can be quickly extracted.

[0046] Working principle:

[0047] An appropriate amount of soil to be extracted is placed in the filter cartridge 3, and an appropriate amount of separation solution is placed in the device housing 1. The cover plate 2 is then hingedly rotated to cover the upper end of the filter cartridge 3, and the drainage control pipe 4 is closed to seal the inside of the device housing 1. The drive motor 5 is then started, so that the drive motor 5 will drive the entire filter cartridge 3 to rotate stably under the rotation limit of the connection rotating block 311 at the bottom and the device housing 1 and the rotation limit of the limit ring groove 313 and the roller 110 under the transmission connection with the upper driven gear 312;

[0048] At the same time, under the transmission of the driving gear 510 and the lower driven gear 610, the entire driven connecting shaft 6 is driven to rotate in the opposite direction of the filter cartridge 3 in the upper driven gear 312, and the internal scraping mechanism is driven to rotate, so that the internal microplastics can be separated more efficiently under the internal centrifugal force and the shear force of the two opposite fluids;

[0049] After completing the separation operation, the excess solution inside can be recovered by opening the drainage control pipe 4, and then the internal heating component of the filter cartridge 3 can be started to dry the inside, and then the cover plate 2 can be opened, and the scraper plate 613 can be taken upwards respectively, and the plug-in connection between the plug-in plate 612 and the plug-in groove 611 can be released, so that the microplastics attached to the scraper plate 613 can be quickly extracted.

[0050] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A device for extracting microplastics from sediments in coal mining subsidence areas, comprising a device housing, characterized in that: A filter cartridge is arranged inside the device shell, and a cover plate is hingedly connected to the upper end of the device shell through a fixed sleeve block, the cover plate covers the filter cartridge, a heating device is arranged inside the filter cartridge, a two-way transmission mechanism is arranged at the bottom end of the filter cartridge, and a scraping mechanism is arranged at the bottom end of the filter cartridge; The bidirectional transmission mechanism includes a driven connecting shaft, which is rotatably connected to the middle of the bottom end of the filter cartridge, and the bottom end of the driven connecting shaft is fixedly connected to a lower driven gear, and the driven connecting shaft rotates in an upper driven gear, and the upper driven gear is fixedly connected to the middle of the bottom end of the filter cartridge.

2. The device for extracting microplastics from sediments in coal mining subsidence areas according to claim 1, characterized in that: The outer wall and the bottom end of the filter cartridge are evenly provided with filter holes, and the bottom end of the filter cartridge is located outside the upper driven gear and is fixedly connected with a connecting rotating block, and the connecting rotating block is rotatably connected to the inner wall of the bottom end of the device shell.

3. The device for extracting microplastics from sediments in coal mining subsidence areas according to claim 2, characterized in that: The middle parts of the upper driven gear and the lower driven gear are meshed and connected to the upper and lower ends of the driving gear, and the driving gear is connected to a driving motor through an output shaft, and the driving motor is fixedly installed at a corresponding position at the bottom end of the device housing.

4. The device for extracting microplastics from sediments in coal mining subsidence areas according to claim 3, characterized in that: A communication hole is provided at the bottom end of the device housing away from the driving motor, and a drainage control pipe is installed in the communication hole.

5. The device for extracting microplastics from sediments in coal mining subsidence areas according to claim 4, characterized in that: The upper part of the inner wall of the device shell is symmetrically connected with rollers through a fixed sleeve block for fixed rotation, and the inner sides of two groups of rollers are both rollingly connected in the limiting ring groove, and the limiting ring groove is arranged at the corresponding position of the outer wall of the filter cartridge.

6. The device for extracting microplastics from sediments in coal mining subsidence areas according to claim 1, characterized in that: The scraping mechanism comprises inserting grooves, which are symmetrically arranged at the upper end of the driven connecting shaft, and inserting plates are inserted and connected in two groups of inserting grooves.

7. The device for extracting microplastics from sediments in coal mining subsidence areas according to claim 6, characterized in that: The outer sides of the two groups of plug plates are fixedly connected with scraping plates, and the outer walls of the scraping plates are in contact with the inner wall of the filter cartridge.

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