Radioactive waste liquid back-flushing deslagging structure

Abstract

The utility model relates to the technical field of radioactive waste liquid treatment equipment, and discloses a radioactive waste liquid back-flushing deslagging structure which comprises a barrel body, a filter cartridge used for filtering radioactive waste liquid is arranged in the barrel body, and a liquid inlet pipe and a liquid outlet pipe are arranged on one side of the barrel body; by arranging the back-flushing assembly, the scraping assembly, the driving assembly and the collecting assembly, when the filter cartridge is subjected to back-flushing deslagging, the back-flushing assembly is opened, water is flushed into the cartridge body to perform back-flushing flowing on the filter cartridge, the driving assembly can drive the scraping assembly to work after the back-flushing assembly is opened, and the inner wall of the filter cartridge is rotationally scraped; according to the filter drum cleaning device, the filter drum is arranged in the filter drum, residues attached to the inner wall of the filter drum are scraped down, the filter drum is vibrated, cleaning is more effective, finally, the collecting assembly can discharge water and collect the scraped residues, in this way, the residues attached to the inner wall of the filter drum can be cleaned and collected together when filter drum backwashing deslagging is carried out, and the backwashing deslagging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radioactive waste liquid treatment equipment, in particular to a radioactive waste liquid recoil slag removal structure. Background Art

[0002] Radioactive wastewater treatment refers to the operational process to change the physical and chemical state of radioactive waste, including collection, concentration, solidification, storage and transportation of waste. After wastewater treatment, the filter structure needs to be cleaned or replaced regularly. When cleaning and replacement are inconvenient, backwashing and slag removal operations will be used. If the backwashing and slag removal operations are not handled properly, it will affect the use. Since backwashing and slag removal is an important link, optimization of backwashing and slag removal is necessary.

[0003] For example, a Chinese utility model patent with the announcement number CN215730901U discloses a filtering device for radioactive waste liquid. Although the above-mentioned prior art has the effect of reducing the exposure time of operators in radioactive areas and has high safety, the filter element needs to be cleaned or replaced after being used for a period of time. However, it is extremely inconvenient to replace and clean the filter elements in some filtering devices. At this time, the filter element is cleaned by backwashing. However, general backwashing only uses water flow to flush the filter element in the reverse direction so that the blocked holes of the filter element can be flushed open for use again. Although most of the filter holes can be flushed open, some residues will still be attached to the surface of the filter element after being moved by the impact of the water flow, and enter the filter hole again after the backwashing ends, resulting in the recoil cleaning being useful but inefficient. Therefore, it is necessary to design a radioactive waste liquid recoil slag removal structure that can collect the residues attached to the surface of the filter element during the recoil process. Utility Model Content

[0004] In order to solve the technical problem that part of the residues adhere to the surface of the filter element during the backwashing and deslagging process, resulting in low backwashing and deslagging efficiency, the utility model provides a radioactive waste liquid backwashing and deslagging structure.

[0005] The utility model is implemented by the following technical scheme: a radioactive waste liquid recoil deslagging structure, comprising a cylinder, a filter cartridge for filtering radioactive waste liquid is arranged inside the cylinder, a liquid inlet pipe and a liquid outlet pipe are arranged on one side of the cylinder, control valves are arranged on the liquid inlet pipe and the liquid outlet pipe, a recoil assembly for recoil deslagging is arranged on the other side of the cylinder, a scraping assembly for scraping residue on the filter cartridge is arranged inside the cylinder, a driving assembly for driving the scraping assembly to perform deslagging is arranged on the top of the cylinder, and a collecting assembly for collecting scraped residue is arranged on the bottom of the cylinder.

[0006] Through the above technical solution, when the filter cartridge inside the cylinder is backwashed to remove residue, the backwash component is turned on to start the drive component, and the scraping component will scrape off the residue attached to the filter cartridge, which will be finally collected by the collecting component.

[0007] As a further improvement of the above solution, the recoil assembly includes a recoil pipe connected to one side of the cylinder and a recoil valve arranged on the recoil pipe.

[0008] Through the above technical solution, opening the backwash valve will allow water to flow through the backwash pipe into the cylinder to backwash the filter cartridge and remove slag.

[0009] As a further improvement of the above scheme, the scraping assembly includes a rotating rod arranged inside the filter cartridge, a plurality of limiting plates symmetrically installed at both ends of the rotating rod and having sliding grooves, and a plurality of scraping plates symmetrically arranged around the rotating rod, each of the scraping plates slidingly cooperates with an adjacent limiting plate through an adjacent sliding groove.

[0010] Through the above technical solution, the rotation of the rotating rod will cause the limiting plate to drive the scraping plate to scrape the inner wall of the filter cartridge, and the residues flushed out will be scraped and collected.

[0011] As a further improvement of the above scheme, a limiting column is fixedly installed on one side of each scraper plate, and one end of each limiting column is slidably sleeved with a fixing sleeve whose one end is fixedly installed with a rotating rod, and each limiting column is sleeved with a pushing spring whose one end is fixedly installed with an adjacent scraper plate and the other end is fixedly installed with the rotating rod.

[0012] Through the above technical solution, when the scraper plate moves, the push spring will always push the scraper plate to fit the inner wall of the filter cartridge.

[0013] As a further improvement of the above solution, a plurality of limit plates are fixedly mounted on the inner wall of the filter cartridge, one side of each limit plate is arranged in an inclined shape, and each limit plate is used in conjunction with a scraper plate.

[0014] Through the above technical solution, after the scraper plate contacts the limiting plate, it will be pushed a certain distance and collide with the inner wall of the filter cartridge, causing the filter cartridge to vibrate, thereby shaking off some residues.

[0015] As a further improvement of the above solution, the driving assembly includes a servo motor arranged at the top of the cylinder and a driving shaft fixedly installed at the output end of the servo motor, one end of the driving shaft passes through the top of the cylinder and is fixedly installed with one end of the rotating rod.

[0016] Through the above technical solution, when the servo motor is started, the driving shaft will drive the rotating rod to rotate.

[0017] As a further improvement of the above scheme, a slag removal port is provided at the bottom of the cylinder, and the collecting assembly includes a slag removal plate arranged on the slag removal port and a sealing ring fixedly sleeved on the circumferential surface of the slag removal plate, and a drain pipe for discharging recoil liquid is provided on one side of the slag removal plate, and a drain valve is provided on the drain pipe.

[0018] Through the above technical solution, opening the drain valve after the recoil is completed will allow the recoil liquid to be discharged from the drain pipe.

[0019] As a further improvement of the above solution, two fixing columns are fixedly installed on the bottom of the cylinder, and a retaining plate is rotatably sleeved on the two fixing columns, and one side of the two retaining plates is fitted with one side of the slag removal plate.

[0020] Through the above technical solution, the rotation of the positioning plate will have the effect of limiting and fixing the slag removal plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The utility model provides a backwashing component, a scraping component, a driving component and a collecting component. When the filter cartridge is backwashed to remove residue, the backwashing component is turned on to allow water to flush into the cylinder to reversely flush the filter cartridge. The driving component drives the scraping component to work after the backwashing component is turned on, and rotates and scrapes the inner wall of the filter cartridge to scrape off the residue attached to the inner wall of the filter cartridge, and the filter cartridge is vibrated to make cleaning more effective. Finally, the collecting component discharges the water and collects the scraped residue. In this way, the residue attached to the inner wall of the filter cartridge can be cleaned and collected together when the filter cartridge is backwashed to remove residue, thereby improving the efficiency of backwashing and removing residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the utility model having a collection component;

[0025] Figure 3 It is a schematic diagram of the structure of the utility model having a driving component;

[0026] Figure 4 It is a schematic diagram of the structure of the utility model with a scraping component.

[0027] Description of main symbols:

[0028] 1. Cylinder; 2. Filter cartridge; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Control valve; 601. Recoil pipe; 602. Recoil valve; 701. Rotating rod; 702. Limiting plate; 703. Scraping plate; 801. Servo motor; 802. Driving shaft; 901. Slag tray; 902. Sealing ring; 10. Limiting column; 11. Fixing sleeve; 12. Pushing spring; 13. Limiting plate; 14. Discharge pipe; 15. Fixing column; 16. Positioning plate. DETAILED DESCRIPTION

[0029] 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.

[0030] Please combine Figure 1-Figure 4 A radioactive waste liquid recoil deslagging structure of the present embodiment comprises a cylinder 1, a filter cartridge 2 for filtering radioactive waste liquid is arranged inside the cylinder 1, a liquid inlet pipe 3 and a liquid outlet pipe 4 are arranged on one side of the cylinder 1, a control valve 5 is arranged on the liquid inlet pipe 3 and the liquid outlet pipe 4, a recoil assembly for recoil deslagging is arranged on the other side of the cylinder 1, a scraping assembly for scraping off the residue on the filter cartridge 2 is arranged inside the cylinder 1, a driving assembly for driving the scraping assembly to perform deslagging is arranged on the top of the cylinder 1, and a collecting assembly for collecting the scraped residue is arranged at the bottom of the cylinder 1.

[0031] Combination Figure 1 The backwash assembly includes a backwash pipe 601 connected to one side of the cylinder 1 and a backwash valve 602 arranged on the backwash pipe 601. When the backwash valve 602 is opened, water will flow through the backwash pipe 601 into the cylinder 1 to backwash the filter cartridge 2 to remove slag.

[0032] Combination Figure 3 and Figure 4The scraping assembly includes a rotating rod 701 arranged inside the filter cartridge 2, a plurality of limiting plates 702 arranged symmetrically at both ends of the rotating rod 701 and provided with sliding grooves, and a plurality of scraping plates 703 arranged symmetrically around the rotating rod 701. Each scraping plate 703 is slidably matched with an adjacent limiting plate 702 through an adjacent sliding groove. A limiting column 10 is fixedly installed on one side of each scraping plate 703. One end of each limiting column 10 is slidably sleeved with one end fixedly installed with the rotating rod 701. A fixing sleeve 11 is installed, and each limiting column 10 is sleeved with a pushing spring 12, one end of which is fixedly installed with the adjacent scraper plate 703 and the other end is fixedly installed with the rotating rod 701. A plurality of limiting plates 13 are fixedly installed on the inner wall of the filter cartridge 2, and one side of each limiting plate 13 is arranged in an inclined shape. Each limiting plate 13 is used in conjunction with the scraper plate 703. When the rotating rod 701 rotates, the limiting plate 702 will drive the scraper plate 703 to scrape the inner wall of the filter cartridge 2, and the residue flushed out will be scraped and collected.

[0033] Combination Figure 3 and Figure 4 The driving assembly includes a servo motor 801 arranged on the top of the cylinder 1 and a driving shaft 802 fixedly installed at the output end of the servo motor 801. One end of the driving shaft 802 passes through the top of the cylinder 1 and is fixedly installed with one end of the rotating rod 701. When the servo motor 801 is started, the driving shaft 802 will drive the rotating rod 701 to rotate.

[0034] Combination Figure 2 and Figure 4 A slag removal port is provided at the bottom of the cylinder 1, and the collecting assembly includes a slag removal plate 901 arranged on the slag removal port and a sealing ring 902 fixedly sleeved on the circumferential surface of the slag removal plate 901, a drain pipe 14 for discharging recoil liquid is provided on one side of the slag removal plate 901, and a drain valve is provided on the drain pipe 14. Two fixed columns 15 are fixedly installed at the bottom of the cylinder 1, and a retaining plate 16 is rotatably sleeved on the two fixed columns 15. One side of the two retaining plates 16 is fitted with one side of the slag removal plate 901. After the recoil is completed, opening the drain valve will allow the recoil liquid to be discharged from the drain pipe 14.

[0035] The implementation principle of a radioactive waste liquid recoil removal structure in the embodiment of the present application is as follows: when the filter cartridge 2 inside the cylinder body 1 needs to be backwashed to remove residue, the recoil valve 602 is opened to allow water to enter the cylinder body 1 along the recoil pipe 601. The water entering the cylinder body 1 will pass through the filter holes of the filter cartridge 2 and enter the filter cartridge 2. In the process of entering the filter cartridge 2, the residues on the filter holes and the inner wall of the filter cartridge 2 will be impacted and removed, so that all the residues are moved with the water flow inside the filter cartridge 2. The servo motor 801 is started, and the drive shaft 802 will drive the rotating rod 701 to rotate. The rotation of the rotating rod 701 will drive the limiting plate 702 and the scraping plate 703 to rotate. The scraping plate 703 will scrape and clean the inner wall of the filter cartridge 2 during the rotation process, and scrape off the residues attached to the inner wall of the filter cartridge 2 that have not moved with the water flow. In the process of scraping, the scraping plate 70 3 will also cooperate with the limiting plate 13 on the inner wall of the filter cartridge 2, the limiting plate 13 will squeeze the scraper plate 703 for a distance, and the pushing spring 12 will push the scraper plate 703 after the scraper plate 703 is squeezed by the limiting plate 13. When the scraper plate 703 leaves the pushing range of the limiting plate 13, it will be immediately pushed by the pushing spring 12 to hit the inner wall of the filter cartridge 2. Due to the obstruction of the water flow, the impact force will not be large, which will cause the filter cartridge 2 to vibrate and increase the cleaning effect of the water flow on the filter holes. Finally, when the backwashing is completed, the drain valve is opened to let the water flow out from the drain pipe 14, so that the waste liquid will be discharged, the residue inside the filter cartridge 2 will also be discharged, and some of it will remain on the slag plate 901. The slag plate 901 can be removed by rotating the positioning plate 16 to clean the residue. The distance between the support frames is enough to move the slag plate 901.

[0036] 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 radioactive waste liquid recoil deslagging structure, comprising a cylinder (1), wherein a filter cartridge (2) for filtering radioactive waste liquid is provided inside the cylinder (1), a liquid inlet pipe (3) and a liquid outlet pipe (4) are provided on one side of the cylinder (1), and a control valve (5) is provided on each of the liquid inlet pipe (3) and the liquid outlet pipe (4), wherein: A recoil assembly for recoil removal is provided on the other side of the cylinder (1); a scraping assembly for scraping off residue on the filter cartridge (2) is provided inside the cylinder (1); a driving assembly for driving the scraping assembly to remove residue is provided on the top of the cylinder (1); and a collecting assembly for collecting scraped residue is provided at the bottom of the cylinder (1).

2. A radioactive waste liquid recoil deslagging structure as claimed in claim 1, characterized in that: The backflushing assembly comprises a backflushing pipe (601) connected to one side of the cylinder (1) and a backflushing valve (602) arranged on the backflushing pipe (601).

3. A radioactive waste liquid recoil deslagging structure as claimed in claim 1, characterized in that: The scraping assembly comprises a rotating rod (701) arranged inside the filter cartridge (2), a plurality of limiting plates (702) which are centrally symmetrically mounted at both ends of the rotating rod (701) and are provided with sliding grooves, and a plurality of scraping plates (703) which are centrally symmetrically arranged around the rotating rod (701), wherein each of the scraping plates (703) is slidably matched with an adjacent limiting plate (702) via an adjacent sliding groove.

4. A radioactive waste liquid recoil deslagging structure as claimed in claim 3, characterized in that: A limiting column (10) is fixedly installed on one side of each scraper plate (703), and a fixing sleeve (11) is slidably mounted on one end of each limiting column (10), one end of which is fixedly mounted on the rotating rod (701), and a pushing spring (12) is sleeved on each limiting column (10), one end of which is fixedly mounted on the adjacent scraper plate (703) and the other end of which is fixedly mounted on the rotating rod (701).

5. A radioactive waste liquid recoil deslagging structure as claimed in claim 3, characterized in that: A plurality of limiting plates (13) are fixedly mounted on the inner wall of the filter cartridge (2), one side of each limiting plate (13) is arranged in an inclined shape, and each limiting plate (13) is used in conjunction with a scraping plate (703).

6. A radioactive waste liquid recoil deslagging structure as claimed in claim 3, characterized in that: The driving assembly comprises a servo motor (801) arranged at the top of the cylinder (1) and a driving shaft (802) fixedly mounted at the output end of the servo motor (801), one end of the driving shaft (802) passing through the top of the cylinder (1) and fixedly mounted to one end of the rotating rod (701).

7. A radioactive waste liquid recoil deslagging structure as claimed in claim 1, characterized in that: The bottom of the cylinder (1) is provided with a slag removal opening, the collecting assembly comprises a slag removal plate (901) arranged on the slag removal opening and a sealing ring (902) fixedly sleeved on the circumferential surface of the slag removal plate (901), a drain pipe (14) for discharging recoil liquid is provided on one side of the slag removal plate (901), and a drain valve is provided on the drain pipe (14).

8. A radioactive waste liquid recoil deslagging structure as claimed in claim 7, characterized in that: Two fixing columns (15) are fixedly mounted on the bottom of the cylinder (1), and a retaining plate (16) is rotatably sleeved on the two fixing columns (15), and one side of the two retaining plates (16) is in contact with one side of the slag removal plate (901).

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