Portable radioactive waste liquid filtering device

Abstract

The utility model relates to the technical field of radioactive waste liquid treatment, and particularly discloses a portable radioactive waste liquid filtering device which comprises a filtering box body, a filtering system arranged in the filtering box body, a transmission system arranged on the filtering box body and connected with the filtering system, and a power supply system arranged on the filtering box body, the filtering box body comprises a shell provided with a feeding interface, a discharging interface and a backflow interface, and a cover body arranged on the shell; the filtering system comprises a pipeline filtering sieve with two ends connected with the shell and an anti-blocking brush with two ends connected with the shell; sieve holes in the pipeline filter sieve and bristles on the anti-blocking brush are in one-to-one correspondence and are consistent in distribution density; the transmission system is used for driving the pipeline filter sieve and the anti-blocking brush to rotate reversely; the power system is used for supplying power to the transmission system. The anti-blocking brush is arranged to prevent the pipeline filter sieve from being blocked, and the device is easy and portable to install, can be suitable for a non-power emergency scene, and gives consideration to efficient filtering and flexible deployment.

Description

TECHNICAL FIELD

[0001] The utility model relates to radioactive waste liquid treatment technical field, especially a portable radioactive waste liquid filtering device. BACKGROUND

[0002] Radioactive waste liquid treatment is an important link in the nuclear industry and nuclear medicine field, especially in the nuclear power plant accident emergency treatment and laboratory sudden leakage scene, an efficient, portable and quickly deployable waste liquid filtering device is urgently needed.

[0003] However, for the treatment of radioactive waste liquid containing large particle impurities, the traditional technology has many limitations. For example, the existing filtering device is mostly fixed structure, large volume and dependent on external power supply, which is difficult to install and use quickly in emergency scene or environment where power supply is not convenient, resulting in low processing response efficiency. In addition, the traditional solid-liquid separation method usually adopts static screen structure, which is easy to cause the large particle impurities in the waste liquid to block the screen hole, not only affecting the continuity of treatment, but also needing frequent shutdown and cleaning, which seriously restricts the stability of subsequent process.

[0004] In terms of maintenance, the filtering components of the existing equipment are mostly fixed aperture screens, which cannot be replaced flexibly according to the particle size of impurities, and lack of modular design, which is difficult to improve the treatment flow by parallel expansion. In addition, some equipment has deficiencies in the isolation design of transmission system and waste liquid collection bin, which may cause radioactive waste liquid leakage and increase the radiation risk of operators.

[0005] In view of the above problems, some improvement schemes have been proposed in the prior art, such as using vibrating screen or high pressure backwashing structure to alleviate the blockage problem, but there are still disadvantages such as high power consumption, complex structure, dependence on external power source, etc., which is difficult to meet the strict requirements of nuclear emergency scene on portability, safety and rapid response. Therefore, there is an urgent need for a radioactive waste liquid filtering device with the characteristics of light weight, anti-blocking, flexible power supply and easy maintenance. UTILITY MODEL CONTENTS

[0006] The utility model provides a portable radioactive waste liquid filtering device, which prevents the pipeline filter screen from being blocked by setting the anti-blocking brush, and the equipment is simple and portable to install, can be applied to no electricity emergency scene, and has the advantages of efficient filtration and flexible deployment.

[0007] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0008] The application provides a portable radioactive waste liquid filtering device, which comprises a filtering box body, a filtering system arranged in the filtering box body, a transmission system arranged on the filtering box body and connected with the filtering system, and a power supply system arranged on the filtering box body; the filtering box body comprises a shell body provided with a feeding interface, a discharging interface and a backflow interface, and a cover arranged on the shell body; the filtering system comprises a pipeline filtering screen connected with the shell body through first bearings at two ends and a plug preventing brush connected with the shell body through second bearings at two ends; the pipeline filtering screen is provided with a plurality of screen holes, and the plug preventing brush is provided with a plurality of brush hairs; the brush hairs correspond to the screen holes one by one, and the distribution density of the brush hairs is consistent with the distribution density of the screen holes; the feeding interface and the backflow interface are connected with two ends of the pipeline filtering screen respectively, and the discharging interface is arranged below the pipeline filtering screen; the transmission system is connected with the pipeline filtering screen and used for driving the pipeline filtering screen and the plug preventing brush to rotate reversely; and the power supply system is arranged on the cover and used for supplying power to the transmission system.

[0009] Preferably, the brush hairs are made of steel wire.

[0010] Preferably, the pipeline filtering screen is detachably arranged.

[0011] Preferably, the transmission system comprises a low-speed servo motor arranged on the cover, a belt pulley connected with an output shaft of the low-speed servo motor, a driving gear connected with the belt pulley through a transmission belt, and a driven gear engaged with the driving gear; the driving gear is fixedly arranged at one end of the pipeline filtering screen, and the driven gear is fixedly arranged at one end of the plug preventing brush.

[0012] Preferably, a sealing partition plate is arranged in the shell body, the sealing partition plate divides the shell body into a transmission compartment and a waste liquid collecting compartment, and the driving gear and the driven gear are arranged in the transmission compartment.

[0013] Preferably, a cleaning interface is arranged on the cover, and the cleaning interface is used for connecting an external water pipe to spray decontamination water into the waste liquid collecting compartment.

[0014] Preferably, the driving gear drives the pipeline filtering screen to rotate clockwise, and the driven gear drives the plug preventing brush to rotate counterclockwise.

[0015] Preferably, the power supply system comprises a mobile power supply access box arranged on the cover, a detachable charging battery arranged on the mobile power supply access box, and an external power supply interface arranged on the mobile power supply access box and used for supplying power to the detachable charging battery by using an external power supply; and the detachable charging battery supplies power to the transmission system through a circuit.

[0016] As preferred, the feeding interface, the discharging interface and the reflux interface are parallel shunt interfaces, the parallel shunt interfaces comprise a main pipe interface connected with the shell, and a first shunt pipe interface and a second shunt pipe interface connected with the main pipe interface and arranged in parallel.

[0017] Compared with the prior art, the portable radioactive waste liquid filtering device has the following beneficial effects:

[0018] The utility model discloses a split type filter box body design, and the transmission bin is isolated with waste liquid collection bin, and combines detachable rechargeable battery and external power supply dual mode power supply, and the portability and power supply adaptation ability of device under emergency scene are improved obviously, adopt the pipeline filter screen of reverse rotation and steel wire anti -plug brush linkage structure, effectively prevent the screen hole block, ensure the efficient separation of large -grain impurity, simultaneously, through the modularization replaceable filter screen design, shunt interface extension and remote power supply control system, realize the flexible adjustment of filter precision, processing flow on -demand extension and operator irradiation risk minimization, have high efficiency, safety and easy maintenance, especially suitable for nuclear accident emergency response, nuclear medicine laboratory and other to the equipment light weight, leak -proof and fast deployment requirement strict radioactive waste liquid processing scene. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is portable radioactive waste liquid filtering device's structure schematic view of the utility model.

[0020] Figure 2 It is the structure schematic view of the shell inside in the utility model embodiment.

[0021] Figure 3 It is the structure schematic view of the filter system in the utility model embodiment.

[0022] Figure 4 It is portable radioactive waste liquid filtering device's perspective structure schematic view of the utility model.

[0023] Figure 5 It is the structure schematic view of parallel shunt interface in the utility model embodiment.

[0024] In the above drawing, the component name corresponding to the reference sign is as follows:

[0025] 1, filter box; 10, shell; 11, feed interface; 12, discharge interface; 13, backflow interface; 14, cover; 15, sealing partition; 150, transmission bin; 151, waste liquid collection bin; 2, filter system; 20, first bearing; 21, pipeline filter screen; 210, screen hole; 22, second bearing; 23, anti-plug brush; 230, bristles; 3, transmission system; 30, low-speed servo motor; 31, pulley; 32, transmission belt; 33, driving gear; 34, driven gear; 4, power supply system; 40, mobile power supply access box; 41, detachable rechargeable battery; 42, external power supply interface; 5, cleaning interface; 6, main pipe interface; 7, first shunt pipe interface; 8, second shunt pipe interface. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0027] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more features. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right" indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] EMBODIMENT

[0029] Please refer to Figures 1-5 The utility model provides a portable radioactive waste liquid filter device, including filter box 1, filter system 2 being arranged in filter box 1, transmission system 3 being arranged on filter box 1 and being connected with filter system 2 and power supply system 4 being arranged on filter box 1, filter box 1 includes the shell 10 being provided with feed interface 11, discharge interface 12 and backflow interface 13 and the cover 14 being arranged on shell 10.

[0030] The filter system 2 comprises a pipeline filter screen 21 connected to the shell 10 at both ends through a first bearing 20, and the pipeline filter screen 21 is detachably arranged. By arranging the detachable pipeline filter screen 21, different aperture pipeline filter screens 21 can be quickly replaced according to the particle size of impurities, and the scene adaptability is improved; at the same time, the cleaning or replacement process is simplified, the downtime is reduced, and the processing continuity is ensured.

[0031] The filter system 2 further comprises a plug prevention brush 23 connected to the shell 10 at both ends through a second bearing 22; the pipeline filter screen 21 has a plurality of screen holes 210, the plug prevention brush 23 has a plurality of bristles 230, the bristles 230 are made of steel wire, the bristles 230 correspond to the screen holes 210 one by one, and the distribution density of the bristles 230 is consistent with the distribution density of the screen holes 210. By reverse rotation of the plug prevention brush 23 and the pipeline filter screen 21, the screen hole is prevented from being blocked. By arranging the plug prevention brush 23 made of steel wire, the service life of the plug prevention brush 23 can be prolonged due to resistance to corrosion of radioactive waste liquid; in addition, the bristles 230 have high hardness and correspond to the screen holes 210 one by one, which can effectively remove the jammed particles and reduce the blockage rate; the plug prevention brush 23 is suitable for waste liquid with high viscosity or containing sharp impurities, and deformation failure of the bristles 230 is avoided.

[0032] The feed interface 11 and the backflow interface 13 are respectively connected to both ends of the pipeline filter screen 21, and the discharge interface 12 is arranged below the pipeline filter screen 21; the transmission system 3 is connected to the pipeline filter screen 21 for driving the pipeline filter screen 21 and the plug prevention brush 23 to rotate reversely. Specifically, the driving gear 33 drives the pipeline filter screen 21 to rotate clockwise, and the driven gear 34 drives the plug prevention brush 23 to rotate counterclockwise. The pipeline filter screen 21 rotates clockwise to gather impurities, and the plug prevention brush 23 rotates counterclockwise to strip synchronously, forming a dynamic cleaning mechanism.

[0033] The transmission system 3 comprises a low-speed servo motor 30 arranged on the cover body 14, a belt pulley 31 connected to an output shaft of the low-speed servo motor 30, a driving gear 33 linked to the belt pulley 31 through a transmission belt 32, and a driven gear 34 engaged with the driving gear 33; the driving gear 33 is fixedly arranged at one end of the pipeline filter screen 21, and the driven gear 34 is fixedly arranged at one end of the plug prevention brush 23. By arranging the transmission system 3, power is generated by the low-speed servo motor 30, transmitted to the driving gear 33 through the belt pulley 31 and the transmission belt 32, and then the pipeline filter screen 21 is driven to rotate, and the power is transmitted to the plug prevention brush 23 by the driving gear 33 driving the driven gear 34, and the plug prevention brush 23 is driven to rotate counterclockwise. By using the low-speed servo motor 30, the energy consumption can be reduced, and the emergency scene is adapted.

[0034] The power supply system 4 is arranged on the cover 14 for supplying power to the transmission system 3. Specifically, the power supply system 4 comprises a mobile power access box 40 arranged on the cover 14, a detachable charging battery 41 arranged on the mobile power access box 40, and an external power supply interface 42 arranged on the mobile power access box 40 for supplying power to the detachable charging battery 41 using an external power supply; the detachable charging battery 41 supplies power to the low-speed servo motor 30 of the transmission system 3 through a circuit. By arranging the power supply system 4, when there is no external power supply in the use scene, the detachable charging battery 41 directly supplies power, and the detachable charging battery device can work continuously for 8 hours in the no-power scene; when there is an external power supply in the use scene, the external power supply is connected through the external power supply interface 42, and the external power supply interface 42 can guarantee long-term operation power supply; the battery is plug and play, which avoids interrupting the key task due to insufficient power.

[0035] The power supply system 4 is further provided with a control system for circuit overload protection and remote start-stop control of the power supply system 4. By arranging the control system, abnormal current can be automatically cut off to prevent the motor from burning out; the need for close-range operation of personnel is reduced, and the risk of radiation exposure is reduced.

[0036] A sealing partition plate 15 is arranged in the shell 10, which divides the shell 10 into a transmission compartment 150 and a waste liquid collection compartment 151, and the driving gear 33 and the driven gear 34 are arranged in the transmission compartment 150. By arranging the sealing partition plate 15 to isolate the transmission compartment 150 from the waste liquid collection compartment 151, radioactive waste liquid pollution of transmission components can be avoided; at the same time, the risk of gear set rusting is reduced, and the frequency of maintenance personnel contacting the radiation source is reduced.

[0037] A cleaning interface 5 is arranged on the cover 14, which is used to connect an external water pipe to spray decontamination into the waste liquid collection compartment 151. By arranging the cleaning interface 5, connecting an external water pipe for spraying cleaning can reduce the radiation risk of manual disassembly and cleaning; through the cleaning interface 5, the waste liquid collection compartment 151 can be directly flushed to remove residual impurities and shorten the device restart preparation time.

[0038] The feed interface 11, the discharge interface 12, and the reflux interface 13 are parallel shunt interfaces, which comprise a main pipe interface 6 connected to the shell 10, and a first shunt pipe interface 7 and a second shunt pipe interface 8 connected to the main pipe interface 6 in parallel. By arranging the parallel shunt interface, the parallel shunt pipe can connect multiple devices to improve the efficiency of large-scale waste liquid treatment; in addition, when a single pipe is blocked, another shunt pipe can be used to maintain operation to ensure system reliability.

[0039] The specific operation steps when using the device are as follows:

[0040] Step one: device assembly

[0041] According to the particle size of impurities in the waste liquid, a pipeline filter screen 21 with a screen hole 210 diameter of 0.5-5mm is selected; a steel wire material anti-plug brush 23 is fixed to the shell 10 through the second bearing 22, ensuring that the bristles 230 of the anti-plug brush 23 correspond to the screen holes 210 of the pipeline filter screen 21 one by one; the driving gear 33 is fixedly installed at one end of the pipeline filter screen 21, the driven gear 34 is fixedly installed at one end of the anti-plug brush 23, and the output shaft of the low-speed servo motor 30 is connected through the belt pulley 31.

[0042] Step two: pipeline installation

[0043] The feed interface 11 is connected to the upstream waste liquid conveying pipeline, and the discharge interface 12 is connected to the feed inlet of the downstream main process system; the backflow interface 13 is connected to the waste liquid circulating pipeline to form a closed loop filtration; if it is necessary to process a large flow of waste liquid, the interface can be replaced with a parallel shunt interface to connect multiple devices in parallel.

[0044] Step three: start running

[0045] The power supply system 4 selects a detachable rechargeable battery 41 or an external power supply interface 42 for power supply; the operation control system remotely starts the low-speed servo motor 30 to drive the driving gear 33 to drive the pipeline filter screen 21 to rotate clockwise, and the driven gear 34 synchronously drives the anti-plug brush 23 to rotate counterclockwise; radioactive waste liquid enters the pipeline filter screen 21 through the feed interface 11, waste liquid meeting the particle size flows into the discharge interface 12 through the screen hole 210, and large-particle impurities return to the circulating treatment with the waste liquid from the backflow interface 13.

[0046] Step four: shutdown and cleaning

[0047] The control system remotely controls the low-speed servo motor 30 to stop and cut off the power supply; the cleaning interface 5 is connected to an external water source to spray the inner wall of the waste liquid collection bin 151 and the surface of the pipeline filter screen 21, and to flush away the residual impurities; the pipeline filter screen 21 and the anti-plug brush 23 are disassembled, and are reinstalled after replacement or cleaning.

[0048] In summary, the utility model solves the deployment problem of inconvenient power supply access through the combined design of the split type filter box 1 and the detachable rechargeable battery 41; the linkage structure of the pipeline filter screen 21 and the anti-plug brush 23 based on reverse rotation, combined with the density matching mechanism of the screen hole 210 and the bristle 230, realizes efficient interception and real-time anti-blocking of large-particle impurities; at the same time, the parallel expansion capability of the modular replaceable pipeline filter screen 21 and the shunt interface makes the device have flexible adaptability and large flow processing efficiency, and is especially suitable for industrial scenes such as nuclear emergency response, radioactive waste liquid recovery, which have strict requirements on equipment portability, sealing and rapid maintenance.

[0049] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form. Any skilled person in the art can make some changes or modifications to the disclosed technical contents without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiments based on the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A portable radioactive waste liquid filtration device, characterized by: The utility model provides a filter box (1), filter system (2) is arranged in the filter box (1), transmission system (3) is arranged on the filter box (1) and is connected with filter system (2), and power supply system (4) is arranged on the filter box (1), the filter box (1) includes the casing (10) that is provided with feed interface (11), discharge interface (12) and backflow interface (13), and the cover (14) is arranged on the casing (10), the filter system (2) includes the pipeline filter screen (21) both ends are connected with the casing (10) through first bearing (20) and the anti-plugging brush (23) both ends are connected with the casing (10) through second bearing (22), the pipeline filter screen (21) has a plurality of screen holes (210), the anti-plugging brush (23) has a plurality of bristles (230), the bristle (230) corresponds with the screen hole (210) one to one, and its distribution density is consistent with the distribution density of screen hole (210), the feed interface (11) and backflow interface (13) are connected with the both ends of the pipeline filter screen (21) respectively, and the discharge interface (12) is arranged below the pipeline filter screen (21), the transmission system (3) is connected with the pipeline filter screen (21) for driving the pipeline filter screen (21) and anti-plugging brush (23) reverse rotation, the power supply system (4) is arranged on the cover (14) for the transmission system (3) power supply.

2. The portable radioactive liquid waste filtration device of claim 1, wherein: The bristle (230) is steel wire material.

3. The portable radioactive liquid waste filtration device of claim 1, wherein: The pipeline filter screen (21) is detachably arranged.

4. The portable radioactive liquid waste filtration device of claim 1, wherein: The transmission system (3) includes a low-speed servo motor (30) arranged on the cover (14), a belt pulley (31) connected with an output shaft of the low-speed servo motor (30), a driving gear (33) linked with the belt pulley (31) through a transmission belt (32), and a driven gear (34) meshed with the driving gear (33); the driving gear (33) is fixedly arranged at one end of the pipeline filter screen (21), and the driven gear (34) is fixedly arranged at one end of the anti-plugging brush (23).

5. The portable radioactive liquid waste filtration device of claim 4, wherein: The casing (10) is provided with a sealing partition plate (15), the sealing partition plate (15) divides the casing (10) into a transmission chamber (150) and a waste liquid collecting chamber (151), and the driving gear (33) and the driven gear (34) are arranged in the transmission chamber (150).

6. The portable radioactive liquid waste filtration device of claim 5, wherein: The cover (14) is provided with a cleaning interface (5), and the cleaning interface (5) is used for connecting an external water pipe to spray and decontaminate the waste liquid collecting chamber (151).

7. The portable radioactive liquid waste filtration device of claim 6, wherein: The driving gear (33) drives the pipeline filter screen (21) to rotate clockwise, and the driven gear (34) drives the anti-plugging brush (23) to rotate counterclockwise.

8. The portable radioactive liquid waste filtration device of claim 1, wherein: The power supply system (4) comprises a mobile power supply access box (40) arranged on the cover body (14), a detachable charging battery (41) arranged on the mobile power supply access box (40), and an external power supply interface (42) arranged on the mobile power supply access box (40) and used for supplying power to the detachable charging battery (41) by using an external power supply; the detachable charging battery (41) supplies power to the transmission system (3) through a circuit.

9. The portable radioactive liquid waste filtration device of claim 1, wherein: The feeding interface (11), the discharging interface (12) and the reflux interface (13) are parallel shunt interfaces, the parallel shunt interfaces comprise a main pipe interface (6) connected with the shell (10), and a first shunt pipe interface (7) and a second shunt pipe interface (8) connected with the main pipe interface (6) and arranged in parallel.

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