Anti-pollution decay pool for nuclear medicine department

Abstract

The anti-pollution decay tank for the nuclear medicine department comprises a liquid decay tank and a self-cleaning type solid-liquid separation mechanism, the right end of the self-cleaning type solid-liquid separation mechanism is communicated and connected with a liquid inlet pipe opening in the liquid decay tank through a pipeline pump, and the left end of the self-cleaning type solid-liquid separation mechanism is communicated and connected with a feeding pipeline; the self-cleaning type solid-liquid separation mechanism is used for complete separation treatment of solid and liquid in radioactive waste water in a filtering mode, solid impurities and waste water are separately decayed, and after the solid impurities are filtered out, the filtered solid impurities are automatically and intensively collected through an automatic cleaning device. According to the anti-pollution decay pool for the nuclear medicine department, complete separation of solid and liquid in radioactive waste water is achieved, independent storage decay of solid impurities and waste water is conducted, automatic cleaning operation is achieved, centralized collection of the solid impurities is assisted, the anti-pollution decay pool is different from existing manual cleaning and replacing operation, and leakage pollution of the radioactive waste water is reduced.

Description

Technical Field

[0001] The invention relates to the technical field related to nuclear medicine, and in particular to an anti-pollution decay pool for nuclear medicine. Background Art

[0002] The nuclear medicine department is a department that specializes in nuclear medicine. It uses nuclear science and technology and means to diagnose and treat diseases using drugs labeled with radionuclides. The nuclear medicine department will produce wastewater containing radionuclides during treatment. If the radioactive wastewater is not properly handled, it will pollute the surrounding environment. In order to store and treat the radioactive wastewater generated by the nuclear medicine department, a decay pool is needed to treat the radioactive wastewater. As an essential facility in the nuclear medicine department, the radioactive wastewater can be discharged after decay treatment to meet the emission standards.

[0003] After searching the invention patent with patent number CN117116521B, a fully automatic treatment system for nuclear medicine decay pool waste liquid is disclosed, including: multiple decay pools arranged in series, a liquid inlet pipe and a liquid outlet pipe are connected in the decay pool, a pump body is provided on the liquid inlet pipe and the liquid outlet pipe, the liquid inlet pipe extends to the bottom of the decay pool, the bottom end of the liquid outlet pipe extends into the upper part of the decay pool, and the liquid inlet pipe is connected to the liquid outlet pipe of the adjacent decay pool; a depth adjustment unit is connected to the top of the decay pool for adjusting the height of the bottom end of the liquid outlet pipe; a coagulant adding unit is connected to the inner wall of the decay pool for adding a coagulant to the decay pool. The present invention adopts a series decay pool, and the waste liquid is processed through a multi-stage decay pool in turn, so as to realize the multi-stage decay of the waste liquid, effectively reduce the content of radioactive elements in the waste liquid, and add a coagulant in the decay process. After the waste liquid is mixed with the coagulant, impurities can be quickly precipitated, so that the decay pool integrates the precipitation function, reduces the space occupied by the system, and improves the integration of the system and the treatment efficiency of the waste liquid.

[0004] The nuclear medicine decay pool used in the above patents and prior art still has certain disadvantages, such as: 1. The above patent is provided with a coagulant adding unit. When dealing with the solid-liquid separation treatment in radioactive wastewater, a coagulant is added to the decay tank to precipitate solid impurities in the radioactive wastewater. However, the solid-liquid separation method in the above patent causes the solid impurities to be precipitated in the decay tank. After the wastewater is injected again, it will cause re-mixing, and the complete separation of solid and liquid cannot be achieved. In addition, the solid impurities are precipitated and retained in the decay tank, which is not easy to clean up later; 2. The existing filtration method is used to separate solids and liquids from radioactive wastewater. After treatment, the filtration structure does not have an automatic cleaning structure, and cannot automatically collect solid impurities after filtration. The manual replacement and cleaning of the filtration structure is easily affected by radioactive wastewater and causes contamination; Therefore, we propose a contamination-proof decay pool for nuclear medicine to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a contamination-proof decay cell for nuclear medicine to solve the problems raised in the above-mentioned background technology that the solid-liquid separation cannot be completely achieved, the separated solid impurities do not have an automatic cleaning structure, and cannot be automatically collected.

[0006] To achieve the above object, the present invention provides the following technical solution: a contamination-proof nuclear medicine decay pool, comprising: A liquid decay pool, wherein the outlet of the liquid decay pool is connected and fixedly connected to an external discharge pipe through an electric valve; Also includes: A self-cleaning solid-liquid separation mechanism, wherein the right end of the self-cleaning solid-liquid separation mechanism is connected to the liquid inlet in the liquid decay pool through a pipeline pump, and the left end of the self-cleaning solid-liquid separation mechanism is connected to the feed pipeline. The self-cleaning solid-liquid separation mechanism is used for complete separation of solid and liquid in radioactive waste water by filtering, and separately decays solid impurities and waste water. After filtering the solid impurities, the self-cleaning solid-liquid separation mechanism is set to automatically collect the filtered solid impurities; The self-cleaning solid-liquid separation mechanism comprises a main pipe shell, a sub-pipe shell, a cleaning member, a filter tube assembly and a plugging member, the left side shell wall of the main pipe shell is provided with an integrated liquid inlet pipe portion, and the left end of the liquid inlet pipe portion is sealed and fixedly connected to the end of the feed pipe, the lower end of the main pipe shell is sealed and fixedly connected to the sub-pipe shell by bolts, and the right side shell wall of the upper section of the sub-pipe shell is provided with an integrated liquid outlet pipe portion, and the left side shell wall of the lower section of the sub-pipe shell is provided with an integrated discharge pipe portion; Wherein, a retractable and slidable cleaning piece is arranged in the shell cavity of the main pipe shell, and a connecting rod is telescopically and slidably connected in the middle of the cleaning piece, and an electric telescopic rod is inserted and fixedly installed in the middle of the end cover of the main pipe shell by bolts; Wherein, a filter tube assembly is fixedly connected to the upper shell cavity of the auxiliary shell by bolt sealing, and a gap is reserved between the filter tube assembly and the upper shell cavity wall of the auxiliary shell; Wherein, a blocking piece is slidably connected in the lower shell cavity of the auxiliary tube shell, and a first spring is installed at the connection between the blocking piece and the auxiliary tube shell; Among them, a locking block is telescopically and slidably connected in the groove cavity at the lower end of the narrow part of the blocking piece, and the locking block is arranged in a ring array with the center of the blocking piece as the center of the circle.

[0007] Preferably, the upper shell cavity of the auxiliary tube shell has the same diameter as the tube cavity of the liquid outlet tube portion, and the end of the liquid outlet tube portion is sealed and fixedly connected with an assembly tube by bolts, and the assembly tube is connected to the pipeline pump at the liquid inlet in the liquid decay tank; The lower shell cavity of the auxiliary tube shell has the same diameter as the tube cavity of the discharge tube, and the end of the discharge tube is sealed and fixed to the central position of the box cover of the solid decay box by bolts.

[0008] Preferably, a second spring is installed at the connection between the connecting rod and the cleaning piece, and the upper end of the rod body portion of the connecting rod is fixedly connected to the output end of the electric telescopic rod by means of bolts.

[0009] Preferably, the upper section of the cleaning member is fixedly sleeved with a first sealing rubber ring, and the cleaning member together with the first sealing rubber ring is connected to the conical tube opening at the lower end of the filter tube assembly by a pressing and fitting manner; The lower section of the cleaning piece is fixedly sleeved with a rubber scraper, and the cleaning piece and the rubber scraper form a sliding structure in the tube cavity of the filter tube assembly, and the rubber scraper is connected to the tube cavity wall of the filter tube assembly in a fitting manner.

[0010] Preferably, the outer sides of the narrow part and the wide part of the plugging member are both fixedly sleeved with a second sealing rubber ring, and the narrow part of the plugging member together with the second sealing rubber ring is plugged and clamped at the pipe opening at the lower end of the filter tube assembly, and the wide part of the plugging member together with the second sealing rubber ring is plugged and fitted in the lower shell cavity of the secondary tube shell; Wherein, a third spring is installed at the connection between the locking block and the blocking member, and the oblique tongue end of the locking block is engaged and connected with the lower end pipe opening wall of the filter tube assembly.

[0011] Preferably, an unlocking disk is connected to the middle groove cavity of the narrow part of the blocking member through a bearing-assisted rotation, and a torsion spring is installed at the connection between the unlocking disk and the blocking member; Wherein, a pushing block of an integrated structure is arranged at the lower side of the unlocking disk, and the pushing block is provided with an inclined side wall, and the inclined side wall of the pushing block is pressed and fitted with the cylindrical part of the locking block; Wherein, a spiral groove is formed on the upper shaft column of the unlocking disk.

[0012] Preferably, a capping member is slidably connected in the groove cavity at the upper end of the narrow portion of the blocking member, and a fourth spring is installed at the connection between the capping member and the blocking member, and the capping member is connected to the rod head portion of the associated rod in a pressing and fitting manner; Wherein, a pin is threadedly fixed on the groove cavity wall of the pressure cap component, and the pin forms a sliding structure in the spiral groove.

[0013] Compared with the prior art, the invention has the following beneficial effects: the anti-pollution nuclear medicine decay pool can achieve complete separation of solid and liquid in radioactive wastewater, separately store and decay solid impurities and wastewater, realize automated cleaning operation, assist in centralized collection of solid impurities, and reduce leakage pollution of radioactive wastewater, which is different from the existing manual cleaning and replacement operation; 1. A filter tube assembly and a solid decay box are provided. The radioactive wastewater in the feed pipe enters the shell cavity of the main shell through the liquid inlet pipe part. After being filtered and separated by the filter tube assembly, the radioactive wastewater enters the liquid decay pool through the liquid outlet pipe part and the assembly pipe for storage and decay. The radioactive solid impurities enter the solid decay box through the auxiliary tube shell and the discharge pipe part for collection and decay. Through filtering and separation, the solid and liquid in the radioactive wastewater are completely separated, and the solid impurities are filtered out and the filtered wastewater is stored and decayed separately; Furthermore, the solid decay box is divided into two parts, a box cover and a box body, which are arranged in a detachable structural state. The box body in the solid decay box is disassembled to clean the solid impurities after decay. The outlet pipe in the liquid decay pool is connected and fixedly connected to the external discharge pipe through an electric valve, and the wastewater after decay is cleaned and discharged through the external discharge pipe. The solid-liquid separation and storage decay treatment method in radioactive wastewater is used to avoid solid-liquid mixing in the decay pool, which effectively solves the problem of convenient cleaning operation of the subsequent decay pool. 2. It is equipped with a plugging piece and a cleaning piece. The rubber scraper is arranged in a trumpet-shaped structure, which is sleeved and fixed on the lower section of the cleaning piece and is connected to the wall of the filter tube assembly. The cleaning piece drives the rubber scraper to slide back and forth in the tube cavity of the filter tube assembly by the telescopic operation control of the electric telescopic rod, so as to realize the automatic cleaning operation of the filter tube assembly, avoid the blockage of the filter tube assembly, which is different from the existing manual cleaning and replacement operation, reduces the leakage pollution of radioactive wastewater, and assists in the centralized collection of solid impurities by scraping the solid impurities after filtration; Furthermore, the cleaning piece is provided in a truncated cone-shaped structure, and a first sealing rubber ring is fixedly sleeved on the upper section thereof, and the first sealing rubber ring is matched with the conical tube-shaped pipe opening at the lower end of the filter tube assembly. After the connecting rod pushes the plugging piece and the pipe opening at the lower end of the filter tube assembly to be separated, the cleaning piece and the first sealing rubber ring are pressed against the conical tube-shaped pipe opening at the lower end of the filter tube assembly to seal. When the filter tube assembly is cleaned, the filter tube assembly does not affect the continued filtering operation, thereby ensuring the continuity of solid-liquid filtration and separation. Furthermore, the linkage rod pushes the pressure cap part, and the unlocking disk is driven to rotate through the sliding cooperation between the pin and the spiral groove, and the locking block and the filter tube assembly are driven to lose the locking effect through the sliding cooperation between the inclined side wall in the pushing block and the cylindrical part in the locking block. Through the setting of the linkage structure, the automatic unlocking processing of the blocking part is realized, thereby ensuring the overall automation performance and achieving the purpose of automatic operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front view of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a bottom-up cross-sectional three-dimensional structure of the connection between the material discharge pipe part and the solid decay box of the present invention; Figure 3 It is a schematic diagram of the front view cross-section of the three-dimensional structure of the self-cleaning solid-liquid separation mechanism of the present invention; Figure 4 It is a schematic diagram of the front cross-sectional three-dimensional structure of the connection between the auxiliary tube shell and the filter tube assembly of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 7 It is a schematic diagram of the three-dimensional structure of the cleaning member and the associated rod separated from each other in the front view of the present invention; Figure 8 It is a schematic diagram of a front view cross-section of a three-dimensional structure of the connection between the connecting rod and the electric telescopic rod of the present invention; Fig. 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle; Fig.10 It is a schematic diagram of the front cross-sectional three-dimensional structure of the connection between the auxiliary tube shell and the plugging member of the present invention; Fig.11 For the present invention Fig.10 The enlarged structural diagram at D in the middle; Fig.12 This is a schematic diagram of the three-dimensional structure of the blocking member and the unlocking disk of the present invention when they are separated; Fig.13 It is a bottom-view cross-sectional three-dimensional structural diagram of the connection between the blocking member and the locking block member of the present invention; Fig.14 It is a schematic diagram of a top-view cross-sectional three-dimensional structure of the connection between the unlocking disk and the pressing cap member of the present invention; Fig.15 It is a schematic diagram of the three-dimensional structure of the locking block and the unlocking disk of the present invention when viewed from above.

[0015] In the figure: 1, liquid decay pool; 2, external discharge pipe; 3, self-cleaning solid-liquid separation mechanism; 4, feed pipe; 5, main pipe shell; 501, liquid inlet pipe; 6, auxiliary pipe shell; 601, liquid outlet pipe; 602, discharge pipe; 7, cleaning part; 701, first sealing rubber ring; 702, rubber scraper; 8, filter tube assembly; 9, plugging part; 901, second sealing rubber ring; 10, first spring; 11, assembly pipe; 12, solid decay box; 13, connecting rod; 14, second spring; 15, electric telescopic rod; 16, locking block; 17, third spring; 18, unlocking disk; 1801, pushing block; 1802, spiral groove; 19, torsion spring; 20, capping part; 2001, pin; 21, fourth spring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 15 The present invention provides a technical solution: a contamination-proof decay pool for nuclear medicine, comprising a liquid decay pool 1 and a self-cleaning solid-liquid separation mechanism 3.

[0018] When the anti-pollution nuclear medicine decay pool is in use, a self-cleaning solid-liquid separation mechanism 3 is arranged at the connection between the feed pipe 4 and the liquid inlet pipe port in the liquid decay pool 1, that is, the right end of the self-cleaning solid-liquid separation mechanism 3 is connected to the liquid inlet pipe port in the liquid decay pool 1 through a pipeline pump, and the left end of the self-cleaning solid-liquid separation mechanism 3 is connected to the feed pipe 4, and radioactive waste water is input into the liquid decay pool 1 through the feed pipe 4. When the radioactive waste water passes through the self-cleaning solid-liquid separation mechanism 3, it is filtered to remove radioactive waste water. Complete separation of solid and liquid in the liquid decay pool 1. After the self-cleaning solid-liquid separation mechanism 3 completes the solid-liquid separation treatment of the radioactive wastewater, the solid impurities after filtration are automatically collected and concentrated through the automatic cleaning setting, and the solid impurities and wastewater are decayed separately. The outlet of the liquid decay pool 1 is connected and fixedly connected with the external discharge pipe 2 through an electric valve. After the radioactive wastewater is decayed, the external discharge pipe 2 is used to output the wastewater after decay treatment in the liquid decay pool 1, and the solid impurities after decay treatment are cleaned by disassembling the solid decay box 12; Specifically, according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Fig.10 As shown, the main casing 5 is arranged in an inclined state after being placed. Since the left shell wall of the main casing 5 is provided with a liquid inlet pipe portion 501 of an integrated structure, the liquid inlet pipe portion 501 is arranged horizontally to the left on the main casing 5, and its lumen is arranged in a connected state with the lumen of the main casing 5. Since the left end of the liquid inlet pipe portion 501 is sealed and fixedly connected with the end of the feed pipe 4, the liquid inlet pipe portion 501 is used for the communication between the feed pipe 4 and the main casing 5, and the radioactive waste water in the feed pipe 4 enters the shell cavity of the main casing 5 through the liquid inlet pipe portion 501; After the filter tube assembly 8 is installed, its upper end is plugged and engaged with the shell cavity wall of the main shell 5, and a sealing ring is provided at the connection between the upper end of the filter tube assembly 8 and the shell cavity wall of the main shell 5, so that the tube cavity of the filter tube assembly 8 is sealed and connected with the shell cavity of the main shell 5, and the radioactive wastewater passes through the shell cavity of the main shell 5 and enters the tube cavity of the filter tube assembly 8; Since the shell cavity of the auxiliary tube shell 6 is divided into two parts, an upper shell cavity and a lower shell cavity, from top to bottom, the auxiliary tube shell 6 is fixedly connected to the lower end of the main tube shell 5 by bolts after installation, and is arranged in an inclined manner and is on the same central axis as the main tube shell 5. Since the lower end of the filter tube assembly 8 is provided with a flange of an integrated structure, the filter tube assembly 8 is inserted into the upper shell cavity of the auxiliary tube shell 6 after installation, wherein the flange is overlapped and fixedly connected to the lower shell cavity wall of the auxiliary tube shell 6 by bolts, so that the filter tube assembly 8 is fixedly connected to the upper shell cavity of the auxiliary tube shell 6 in a sealed manner; Since a plugging member 9 is provided in the lower shell cavity of the secondary tube shell 6, the longitudinal section of the plugging member 9 is in a "convex" shape, which is divided into two parts, a narrow part and a wide part. Since the second sealing rubber ring 901 is fixedly sleeved at equal intervals on the outside of the narrow part and the outside of the wide part of the plugging member 9, when the plugging member 9 is in the initial state, the narrow part together with the second sealing rubber ring 901 is plugged and engaged with the pipe opening at the lower end of the filter tube assembly 8, and the pipe opening at the lower end of the filter tube assembly 8 is sealed and blocked. After the radioactive wastewater enters the tube cavity of the filter tube assembly 8, it is placed in the tube cavity of the filter tube assembly 8, and the solid impurities in the radioactive wastewater are filtered and separated by the filter tube assembly 8; Since the outer diameter of the filter tube assembly 8 is smaller than the diameter of the middle and upper shell cavity of the auxiliary tube shell 6, a gap is reserved between the filter tube assembly 8 and the middle and upper shell cavity wall of the auxiliary tube shell 6, and the radioactive wastewater and solid impurities after filtering are retained in the tube cavity of the filter tube assembly 8, and the wastewater enters the gap between the filter tube assembly 8 and the auxiliary tube shell 6; Since the right side shell wall of the upper section of the auxiliary tube shell 6 is inclined upwardly provided with a liquid outlet pipe part 601 of an integrated structure, the diameter of the tube cavity of the liquid outlet pipe part 601 is the same as the diameter of the tube cavity of the upper shell cavity of the auxiliary tube shell 6, and is arranged in a connected state, and is used for the communication connection between the upper shell cavity of the auxiliary tube shell 6 and the assembly pipe 11. Moreover, since the assembly pipe 11 is sealed and fixedly connected to the end of the liquid outlet pipe part 601 by bolts after being placed, it is arranged in a horizontal rightward state, and its tube cavity is arranged in a connected state with the tube cavity of the liquid outlet pipe part 601, and is used for the communication connection between the liquid outlet pipe part 601 and the pipeline pump. When the pipeline pump is operated, the filtered radioactive wastewater passes through the liquid outlet pipe part 601 and the assembly pipe 11 and enters the liquid inlet pipe port in the liquid decay pool 1; Since the left side pool wall at the upper end of the liquid decay pool 1 is provided with an integrated liquid inlet pipe port, a pipeline pump is provided at the connection between the self-cleaning solid-liquid separation mechanism 3 and the liquid inlet pipe port in the liquid decay pool 1, wherein one end of the pipeline pump is sealed and connected to the liquid inlet pipe port in the liquid decay pool 1, and the other end of the pipeline pump is sealed and connected to the assembly pipe 11, and the filtered radioactive waste water passes through the liquid inlet pipe port in the liquid decay pool 1 and enters the liquid decay pool 1 for storage and decay; Since the front side pool wall at the lower end of the liquid decay pool 1 is provided with a liquid outlet of an integrated structure, an electric valve is provided at the connection between the external discharge pipe 2 and the liquid outlet of the liquid decay pool 1, wherein one end of the electric valve is sealed, connected and fixedly connected to the end of the external discharge pipe 2, and the other end of the electric valve is sealed, connected and fixedly connected to the liquid outlet of the liquid decay pool 1, when the radioactive wastewater completes decay, it is output through the external discharge pipe 2 for treatment; according to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the upper end of the main pipe shell 5 is clamped and fixedly connected with the end cover by bolt sealing. Since the electric telescopic rod 15 is inserted and fixedly installed in the middle of the end cover of the main pipe shell 5 by bolts after placement, it is in a downward state and is on the same central axis as the main pipe shell 5. The output end movably penetrates the end cover in the main pipe shell 5, and a sealing ring is provided at the interlaced connection between the two. Since the upper end of the rod body part of the connecting rod 13 is fixedly connected to the output end of the electric telescopic rod 15 by bolts, the electric telescopic rod 15 is started to extend and operate, driving the connecting rod 13 to move toward the filter tube assembly 8; Since the middle part of the cleaning member 7 is provided with a connecting rod 13, a circular tube portion of an integrated structure is vertically upwardly provided at the central position of the upper wide surface of the cleaning member 7, wherein the upper end of the circular tube portion is sleeved and fixedly connected with a tube cover by bolts, the connecting rod 13 is arranged in a nail-like structure, and the rod head portion is placed on the lower side of the cleaning member 7 after placement, and the rod body portion thereof is movably inserted through the cleaning member 7 and movably inserted into the circular tube portion in the cleaning member 7, and since the output end of the electric telescopic rod 15 is movably inserted through the tube cover in the cleaning member 7 after placement, and is movably inserted into the The cleaning member 7 is fixedly connected to the upper end of the rod body of the connecting rod 13 in the circular tube portion. A second spring 14 is installed at the connection between the connecting rod 13 and the cleaning member 7. After the second spring 14 is installed, it is movably sleeved on the rod body of the connecting rod 13, one end of which is pressed against the tube cavity wall of the circular tube portion of the cleaning member 7, and the other end of which is pressed against the output end of the electric telescopic rod 15. Through the elastic support of the second spring 14 and the limit of the tube cover in the cleaning member 7, the cleaning member 7 is positioned on the output end of the electric telescopic rod 15 in an active state; Since a sealing ring is provided at the interpenetrating connection between the rod body part of the connecting rod 13 and the cleaning member 7, a sealing ring is provided at the connection between the output end of the electric telescopic rod 15 and the pipe cover of the cleaning member 7 and at the connection between the output end of the electric telescopic rod 15 and the circular tube part of the cleaning member 7, the connecting rod 13 and the cleaning member 7 are mutually sealed. Since the cleaning member 7 is arranged in a truncated cone-shaped structure with the narrow surface facing downward, and its maximum diameter is smaller than the diameter of the tube cavity in the filter tube assembly 8, the cleaning member 7 corresponds to the filter tube assembly 8 after being arranged, and is located on the same central axis. Moreover, since the lower section of the cleaning member 7 is fixedly sleeved with a rubber scraper 702, and the rubber scraper 702 is arranged in a trumpet-shaped structure, and its specifications and dimensions are adapted to the specifications and dimensions of the tube cavity of the filter tube assembly 8, the associated rod 13 is driven to drive the cleaning member 7 to move toward the filter tube assembly 8 synchronously, and slide in the shell cavity of the main shell 5, so that the cleaning member 7 is inserted into the tube cavity of the filter tube assembly 8, and the cleaning member 7 and the rubber scraper 702 form a sliding structure in the tube cavity of the filter tube assembly 8, and the solid impurities accumulated on the tube cavity wall of the filter tube assembly 8 are scraped downwards through the fitting connection between the rubber scraper 702 and the tube cavity wall of the filter tube assembly 8; according to Figure 3 , Figure 4 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 and Fig.15As shown, since the upper end of the narrow part of the plugging member 9 is fixedly connected to the limiting ring cover by bolts, the outer side of the pressure cap member 20 is fixedly sleeved with a sealing ring, which is movably inserted into the upper end groove cavity of the narrow part of the plugging member 9 with the sealing ring after being installed, and the upper end thereof movably penetrates through the limiting ring cover in the plugging member 9 and extends outward, and is restricted by the limiting ring cover in the plugging member 9, so that the pressure cap member 20 is positioned on the narrow part of the plugging member 9 in an active state; Since the fourth spring 21 is installed at the connection between the pressing cap member 20 and the plugging member 9, after the fourth spring 21 is installed, one end of the fourth spring 21 is movably inserted in the spring chamber of the pressing cap member 20 and pressed against the chamber wall, and the other end of the fourth spring 21 is pressed against the groove cavity wall of the narrow part of the plugging member 9. After the cleaning member 7 drives the rubber scraper 702 to scrape downward, the rod head part of the associated rod 13 is pressed and connected with the pressing cap member 20, and the pressing cap member 20 is pushed. At this time, the plugging member 9 is positioned and locked at the lower end of the filter tube assembly 8 through the engagement of the locking block 16, so that the pressing cap member 20 shrinks and slides in the upper end groove cavity of the narrow part of the plugging member 9, and the fourth spring 21 is squeezed and elastically deformed; Since an integrated shaft column is vertically arranged on the upper side of the middle of the unlocking disk 18, the pressure cap member 20 is movably sleeved on the upper shaft column of the unlocking disk 18 after being installed, and since a spiral groove 1802 is provided on the upper shaft column of the unlocking disk 18, the spiral groove 1802 is symmetrically arranged about the central axis of the unlocking disk 18, and its spiral angle is forty-five degrees, and its length dimension is equal to the maximum sliding distance dimension of the unlocking disk 18, and the spiral directions of the two spiral grooves 1802 are arranged in opposite directions. In addition, since a pin 2001 is threadedly fixed on the groove cavity wall of the pressure cap member 20, the pin 2001 is symmetrically arranged about the central axis of the pressure cap member 20, and is arranged in a vertical state after being installed, and is movably inserted in the spiral groove 1802. After the pressure cap member 20 is pushed, contracted and slid, its upper side wall is flush with the upper side wall of the narrow part of the blocking member 9, so that the pin 2001 forms a sliding structure in the spiral groove 1802, and the unlocking disk 18 is driven to rotate through the sliding cooperation of the two. Since an integrated shaft column is vertically arranged on the lower side of the middle part of the unlocking disk 18, the upper and lower ends of the lower shaft column are fixedly clamped with bearings, and after it is installed, the lower shaft column and the bearing are movably inserted in the wide part of the blocking member 9, and are arranged in a movable positioning state. In addition, since a torsion spring 19 is installed at the connection between the unlocking disk 18 and the blocking member 9, the torsion spring 19 is movably sleeved on the lower shaft column of the unlocking disk 18 after installation, one end of which is clamped on the lower shaft column of the unlocking disk 18, and the other end of which is clamped on the groove cavity wall of the wide part of the blocking member 9, the unlocking disk 18 is driven to rotate in the middle groove cavity of the narrow part of the blocking member 9 with the assistance of the bearing, and the torsion spring 19 is squeezed to elastically deform; Since a locking block 16 is arranged in the groove cavity at the lower end of the narrow part of the blocking member 9, a cylindrical part of an integrated structure is arranged vertically upward at the inner end of the locking block 16, and the locking block 16 is movably inserted into the groove cavity of the narrow part of the blocking member 9 after being arranged, wherein the oblique tongue end extends outward, and the locking block 16 is positioned on the narrow part of the blocking member 9 in an active state through the limitation of the cylindrical part; Since the locking block 16 is arranged in a circular array with the center of the blocking member 9 as the center, and since a pushing block 1801 of an integrated structure is arranged at the lower side of the unlocking disk 18, the pushing blocks 1801 are arranged in a circular array with the center of the unlocking disk 18 as the center, and each pushing block 1801 is arranged one-to-one with each locking block 16, and since the pushing blocks 1801 are provided with inclined side walls, wherein the inclined side walls are pressed and fit with the cylindrical part of the locking block 16, after the unlocking disk 18 is driven to rotate, the pushing block 1801 pushes the cylindrical part of the locking block 16, so that the locking block 16 shrinks and slides in the lower end groove cavity of the narrow part of the blocking member 9; Since the inclined side wall facing outward of the locking block 16 is provided as an inclined tongue end, a third spring 17 is installed at the connection between the locking block 16 and the blocking member 9. After the third spring 17 is installed, one end of the third spring 17 is movably inserted in the spring bin of the locking block 16 and pressed against the bin wall, and the other end of the third spring 17 is pressed against the groove cavity wall of the narrow part of the blocking member 9. After the locking block 16 contracts and slides, the inclined tongue end loses the engagement connection with the lower end pipe mouth wall of the filter tube assembly 8, so that the third spring 17 is squeezed and elastically deformed, and the locking of the blocking member 9 is released. The rod 13 continues to move downward, pushing the blocking member 9 to move, so that the narrow part of the blocking member 9 loses the plug-in engagement with the pipe mouth of the lower end of the filter tube assembly 8, and the blocking of the lower end pipe mouth of the filter tube assembly 8 is released, and the pipe cavity of the main pipe shell 5 and the lower shell cavity of the auxiliary pipe shell 6 are connected. At this time, the scraped solid impurities slide through the pipe mouth of the lower end of the filter tube assembly 8 and enter the lower shell cavity of the auxiliary pipe shell 6. Since the lower end of the auxiliary tube shell 6 is clamped and fixedly connected with the end cover by bolt sealing, the plugging member 9 is movably inserted into the lower shell cavity of the auxiliary tube shell 6 after being installed, wherein the wide portion together with the second sealing rubber ring 901 is inserted and fitted to the lower shell cavity wall of the auxiliary tube shell 6, and since the first spring 10 is installed at the connection between the plugging member 9 and the auxiliary tube shell 6, after the first spring 10 is installed, one end of the first spring 10 is inserted into the spring bin of the wide portion of the plugging member 9 and pressed against the bin wall, and the other end of the first spring 10 is inserted into the spring bin of the middle end cover of the auxiliary tube shell 6 and pressed against the bin wall, and the plugging member 9 slides in the lower shell cavity of the auxiliary tube shell 6 after being pushed, and the first spring 10 is elastically deformed under compression; Since the tube cavity at the lower end of the filter tube assembly 8 is set in a conical tube structure with the small head facing downward, which is compatible with the specifications and dimensions of the cleaning member 7, and since the upper section of the cleaning member 7 is fixedly sleeved with the first sealing rubber ring 701, when the connecting rod 13 drives the cleaning member 7 to move downward continuously, the cleaning member 7 and the first sealing rubber ring 701 are connected to the conical tube opening at the lower end of the filter tube assembly 8 in a pressing and fitting manner, which is used for the sealing treatment after the cleaning member 7 and the conical tube opening at the lower end of the filter tube assembly 8 are engaged, that is, after the blocking member 9 is separated from the lower end of the filter tube assembly 8, the cleaning member 7 re-seals the lower end of the filter tube assembly 8, which does not affect the continuous filtering treatment of the filter tube assembly 8. At this time, the cleaning member 7 is restricted, and the connecting rod 13 continues to move downward, slides out in the middle of the cleaning member 7, and causes the second spring 14 to be squeezed and elastically deformed; according to Figure 1 , Figure 2 and Figure 3 As shown, the left shell wall of the lower section of the auxiliary tube shell 6 is provided with an integrated structure of the drainage pipe part 602, and the diameter of the tube cavity of the drainage pipe part 602 is the same as that of the lower shell cavity of the auxiliary tube shell 6. Since the solid decay box 12 is divided into two parts, the box cover part and the box body part, the solid decay box 12 is arranged vertically on the drainage pipe part 602 after being placed, and its box cavity is arranged in a connected state with the tube cavity of the drainage pipe part 602. Since the drainage pipe part 602 is arranged in an inclined downward state, its end is sealed and fixedly connected to the The solid decay box 12 is located at the center of the box cover, and its tube cavity is connected to the lower shell cavity of the auxiliary tube shell 6, which is used for the communication between the lower shell cavity of the auxiliary tube shell 6 and the solid decay box 12. After the plugging member 9 is pushed and slid, it loses its obstruction to the drainage pipe 602, and the scraped solid impurities slide through the pipe opening at the lower end of the filter tube assembly 8 into the lower shell cavity of the auxiliary tube shell 6, and through the drainage pipe 602, the scraped solid impurities slide into the solid decay box 12 for centralized collection and decay. Since the box body of the solid decay box 12 is fixedly connected to the lower side of the box cover by bolt sealing, the box body of the solid decay box 12 is arranged in a detachable state, and is used for collecting and cleaning solid impurities after decay after disassembly; According to the above, since the inclined side wall of the oblique tongue end of the locking block 16 is arranged upward, the electric telescopic rod 15 is started to retract and operate, driving the associated rod 13 to move away from the filter tube assembly 8, and the elastic deformation of the second spring 14 is reset, so that the associated rod 13 is reset and slid in the middle of the cleaning member 7, and the associated rod 13 drives the cleaning member 7 to move away from the filter tube assembly 8. When the associated rod 13 loses its pushing effect on the pressure cap member 20, the elastic deformation of the fourth spring 21 is used to drive the pressure cap member 20 to reset and slide. , and utilize the sliding fit between the pin 2001 and the spiral groove 1802 and the elastic deformation reset of the torsion spring 19 to drive the unlocking disk 18 to reset and rotate, drive the pushing block 1801 to lose the pushing effect on the locking block 16, utilize the elastic deformation reset of the first spring 10 to make the narrow part of the blocking member 9 re-engage with the lower end of the filter tube assembly 8 in a sealing and plugging manner, and utilize the elastic deformation reset of the third spring 17 to make the oblique tongue end of the locking block 16 re-engage with the lower end of the filter tube assembly 8 The wall of the tube orifice is locked; This is the entire working process of the anti-contamination nuclear medicine decay pool. Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0019] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0020] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A contamination-proof nuclear medicine decay pool, comprising: A liquid decay pool (1), wherein a liquid outlet pipe of the liquid decay pool (1) is connected and fixedly connected to an external discharge pipe (2) via an electric valve; It is characterized by further comprising: A self-cleaning solid-liquid separation mechanism (3), wherein the right end of the self-cleaning solid-liquid separation mechanism (3) is connected to a liquid inlet pipe in a liquid decay pool (1) via a pipeline pump, and the left end of the self-cleaning solid-liquid separation mechanism (3) is connected to a feed pipe (4). The self-cleaning solid-liquid separation mechanism (3) is used for completely separating solid and liquid in radioactive waste water by filtering, and separately decaying solid impurities and waste water. After filtering solid impurities, the self-cleaning solid-liquid separation mechanism (3) is automatically cleaned to automatically collect the filtered solid impurities; The self-cleaning solid-liquid separation mechanism (3) comprises a main pipe shell (5), a sub-pipe shell (6), a cleaning member (7), a filter tube assembly (8) and a plugging member (9); the left side shell wall of the main pipe shell (5) is provided with a liquid inlet pipe portion (501) of an integrated structure, and the left end of the liquid inlet pipe portion (501) is sealed and fixedly connected to the end of the feed pipe (4); the lower end of the main pipe shell (5) is sealed and fixedly connected to the sub-pipe shell (6) by bolts, and the right side shell wall of the upper section of the sub-pipe shell (6) is provided with a liquid outlet pipe portion (601) of an integrated structure, and the left side shell wall of the lower section of the sub-pipe shell (6) is provided with a discharge pipe portion (602) of an integrated structure; A retractable and slidable cleaning member (7) is provided in the shell cavity of the main pipe shell (5), and a connecting rod (13) is telescopically and slidably connected to the middle portion of the cleaning member (7), and an electric telescopic rod (15) is inserted and fixedly installed in the middle portion of the end cover of the main pipe shell (5) by means of bolts; Wherein, a filter tube assembly (8) is fixedly connected to the upper shell cavity of the auxiliary tube shell (6) by bolt sealing, and a gap is reserved between the filter tube assembly (8) and the upper shell cavity wall of the auxiliary tube shell (6); Wherein, a blocking piece (9) is slidably connected in the lower shell cavity of the auxiliary tube shell (6), and a first spring (10) is installed at the connection between the blocking piece (9) and the auxiliary tube shell (6); A locking block (16) is telescopically and slidably connected in the groove cavity at the lower end of the narrow portion of the blocking member (9), and the locking block (16) is arranged in a circular array with the center of the blocking member (9) as the center of the circle.

2. The anti-pollution nuclear medicine decay cell according to claim 1, characterized in that: The upper shell cavity of the auxiliary tube shell (6) has the same diameter as the tube cavity of the liquid outlet tube portion (601), and the end of the liquid outlet tube portion (601) is sealed and fixedly connected to an assembly tube (11) by bolts, and the assembly tube (11) is in communication with a pipeline pump at the liquid inlet port of the liquid decay pool (1); The lower shell cavity of the auxiliary tube shell (6) has the same diameter as the tube cavity of the discharge tube part (602), and the end of the discharge tube part (602) is sealed and fixed to the central position of the box cover of the solid decay box (12) by bolts.

3. The anti-pollution nuclear medicine decay cell according to claim 1, characterized in that: A second spring (14) is installed at the connection between the connecting rod (13) and the cleaning member (7), and the upper end of the rod body of the connecting rod (13) is fixedly connected to the output end of the electric telescopic rod (15) by means of bolts.

4. The anti-contamination nuclear medicine decay cell according to claim 3, characterized in that: The upper section of the cleaning member (7) is fixedly sleeved with a first sealing rubber ring (701), and the cleaning member (7) together with the first sealing rubber ring (701) is connected to the conical tube opening at the lower end of the filter tube assembly (8) by a pressing and fitting manner; The lower section of the cleaning piece (7) is fixedly sleeved with a rubber scraper (702), and the cleaning piece (7) together with the rubber scraper (702) forms a sliding structure in the tube cavity of the filter tube assembly (8), and the rubber scraper (702) is connected to the tube cavity wall of the filter tube assembly (8) in a fitting manner.

5. The anti-contamination nuclear medicine decay cell according to claim 1, characterized in that: The second sealing rubber ring (901) is fixedly sleeved on the outer side of the narrow portion and the outer side of the wide portion of the plugging member (9), and the narrow portion of the plugging member (9) together with the second sealing rubber ring (901) is plugged and engaged at the pipe opening at the lower end of the filter tube assembly (8), and the wide portion of the plugging member (9) together with the second sealing rubber ring (901) is plugged and engaged in the lower shell cavity of the auxiliary tube shell (6); A third spring (17) is installed at the connection between the locking block (16) and the blocking member (9), and the oblique tongue end of the locking block (16) is snap-fitted and connected to the lower end wall of the filter tube assembly (8).

6. The anti-contamination nuclear medicine decay cell according to claim 5, characterized in that: An unlocking disk (18) is rotatably connected in the middle groove cavity of the narrow portion of the blocking member (9) via a bearing, and a torsion spring (19) is installed at the connection between the unlocking disk (18) and the blocking member (9); Wherein, a pushing block (1801) of an integrated structure is arranged at the lower side of the unlocking disk (18), and the pushing block (1801) is provided with an inclined side wall, and the inclined side wall of the pushing block (1801) is pressed and fitted with the cylindrical part of the locking block (16); Wherein, the upper shaft column of the unlocking disk (18) is provided with a spiral groove (1802).

7. The anti-contamination nuclear medicine decay cell according to claim 6, characterized in that: A pressing cap member (20) is slidably connected in the groove cavity at the upper end of the narrow portion of the blocking member (9), a fourth spring (21) is installed at the connection between the pressing cap member (20) and the blocking member (9), and the pressing cap member (20) is connected to the rod head portion of the associated rod (13) in a pressing and fitting manner; A pin (2001) is threadedly fixed to the groove cavity wall of the pressure cap component (20), and the pin (2001) forms a sliding structure in the spiral groove (1802).

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