Dynamic measuring device for activity of medical radioactive waste liquid

Abstract

The invention relates to the technical field of radiation monitoring equipment, and discloses a medical radioactive waste liquid activity dynamic measuring device which comprises a protective cover, a first hydraulic cylinder is fixedly connected to the top of the protective cover, a third hydraulic cylinder is fixedly connected to the outer wall of the protective cover, and a first detection pipe is fixedly connected to the inner wall of the protective cover through a flange plate. The end, away from the inner wall of the protective cover, of the first detection pipe is fixedly connected with a first guide sleeve through a flange plate, the outer wall of the first guide sleeve is fixedly connected with a detection block, the inner wall of the first guide sleeve is provided with a switching mechanism, the switching mechanism comprises a switching block, and the top of the switching block is fixedly connected with the output end of a first hydraulic cylinder. The outer wall of the switching block is in sliding connection with the inner wall of the first guide sleeve. The second detection pipe is switched through the switching mechanism, radioactive substances are prevented from being accumulated in the second detection pipe due to long-time detection, and the radiation monitoring equipment can monitor medical wastewater more accurately and stably.

Description

Technical Field

[0001] This invention relates to the field of radiation monitoring equipment technology, specifically to a dynamic measurement device for the activity of medical radioactive waste liquid. Background Technology

[0002] Dynamic measurement of the activity of medical radioactive waste liquid involves real-time monitoring of radioactive waste liquid generated during medical activities, tracking the decay process of radioactive nuclide activity, and providing key data for the compliant discharge of waste liquid.

[0003] Patent application CN202422767751.8 discloses a dynamic measurement device for the activity of medical radioactive waste liquid, specifically relating to the field of radiation monitoring. The device includes: a sample chamber and a detector; the sample chamber is equipped with a liquid level detection device, an overflow detection device, a sample injection / discharge pump, and a cleaning device; the sample chamber includes a protective cavity and a marlin cup-shaped sample box; the detector is located above the marlin cup-shaped sample box; the liquid level detection device includes a first liquid level detection device located at the bottom of the sample chamber and a movable second liquid level detection device; the overflow detection device is used to detect whether material in the sample chamber overflows; the medical radioactive waste liquid decay cell is connected to the sample chamber via the sample injection / discharge pump; a control valve is installed between the sample injection / discharge pump and the sample chamber.

[0004] However, during the long-term dynamic measurement of the activity of medical radioactive waste liquid, the detection pipeline cannot be cleaned in time, which causes radioactive nuclides to be adsorbed and retained on the inner wall of the pipeline, interfering with the detection results and making it impossible to accurately measure the radioactivity in the wastewater. Summary of the Invention

[0005] The purpose of this invention is to provide a dynamic measurement device for the activity of medical radioactive waste liquid, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dynamic measuring device for the activity of medical radioactive waste liquid, comprising a protective cover, a hydraulic cylinder 1 fixedly connected to the top of the protective cover, a hydraulic cylinder 3 fixedly connected to the outer wall of the protective cover, a detection tube 1 fixedly connected to the inner wall of the protective cover via a flange, a guide sleeve 1 fixedly connected to the end of the detection tube 1 away from the inner wall of the protective cover via a flange, a detection block fixedly connected to the outer wall of the guide sleeve 1, and a switching mechanism provided on the inner wall of the guide sleeve 1;

[0007] The switching mechanism includes a switching block. The top of the switching block is fixedly connected to the output end of a hydraulic cylinder. The outer wall of the switching block is slidably connected to the inner wall of a guide sleeve. A detection tube is provided on the inner wall of the switching block. A stop block is rotatably connected to the inner wall of the detection tube via a bearing. A guide groove is provided on the inner wall of the stop block. The guide groove is spirally formed on the inner wall of the stop block and is used to guide the wastewater and generate swirling flow on the inner wall of the detection tube.

[0008] According to the above technical solution, a flow guiding mechanism is provided on the inner wall of the detection tube 1. The flow guiding mechanism includes a central rod 1. The end of the central rod 1 near the hydraulic cylinder 3 is rotatably connected to the output end of the hydraulic cylinder 3 via a rotating shaft. A plug is fixedly connected to the end of the central rod 1 away from the hydraulic cylinder 3. The central rod 1 is driven by the hydraulic cylinder 3 to insert the outer wall of the plug into the inner wall of the stop block 1. The outer wall of the plug is provided with a flange for inserting into the inner wall of the stop block 1 and driving the stop block 1 to rotate on the inner wall of the detection tube 2. A flow guiding fan is fixedly connected to the outer wall of the central rod 1. The flow guiding fan drives the central rod 1 to rotate on the inner wall of the hydraulic cylinder 3 through the flow of wastewater.

[0009] According to the above technical solution, a stop block three is slidably connected to the outer wall of the central rod one. The outer wall of the stop block three is fixedly connected to the inner wall of the hydraulic cylinder three. A guide groove three is provided on the inner wall of the stop block three for guiding wastewater. A guide block one is rotatably connected to the outer wall of the central rod one through a bearing. The outer wall of the guide block one is slidably connected to the inner wall of the hydraulic cylinder three. A guide groove two is provided on the inner wall of the guide block one for guiding wastewater. A limit ring one is fixedly connected to the outer wall of the central rod one. The outer wall of the limit ring one is rotatably connected to the inner wall of the guide block one through a bearing. The limit ring one is used to limit the guide block one. When the central rod one drives the guide block one to slide in the direction of the hydraulic cylinder three on the inner wall of the detection tube one, the guide block one and the stop block three are inserted and sealed for intercepting wastewater.

[0010] According to the above technical solution, a second baffle is fixedly connected to the outer wall of the first baffle, and a guide hole is opened on the inner wall of the second baffle. The guide hole is connected to the first guide channel. The first guide channel is used to guide the wastewater. The first baffle rotates on the inner wall of the second detection tube to refine the solid particles in the wastewater entering the second detection tube.

[0011] According to the above technical solution, a second hydraulic cylinder is fixedly connected to the outer wall of the protective cover, and a cleaning pipe is fixedly connected to the inner wall of the protective cover via a flange. The end of the cleaning pipe away from the inner wall of the protective cover is fixedly connected to the outer wall of the guide sleeve via a flange. The first hydraulic cylinder is used to drive the switching block to slide on the inner wall of the guide sleeve. There are two sets of second detection pipes. The two sets of second detection pipes are equidistantly arrayed on the inner wall of the switching block with the center line of the switching block as the array axis. When the first hydraulic cylinder drives the switching block to slide on the inner wall of the guide sleeve to the top of the guide sleeve, the second detection pipe above the switching block corresponds to the cleaning pipe and is connected to the cleaning pipe. The second detection pipe below the switching block corresponds to the first detection pipe and is connected to the first detection pipe. When the first hydraulic cylinder drives the switching block to slide down on the inner wall of the guide sleeve to the bottom of the guide sleeve, the second detection pipe below the switching block corresponds to the cleaning pipe and is connected to the cleaning pipe. The second detection pipe above the switching block corresponds to the first detection pipe and is connected to the first detection pipe, thus performing a switching operation.

[0012] According to the above technical solution, a cleaning mechanism is provided on the inner wall of the cleaning pipe. The cleaning mechanism includes a central rod two, one end of which is close to the hydraulic cylinder two and is rotatably connected to the output end of the hydraulic cylinder two via a rotating shaft. A guide block two is slidably connected to the outer wall of the central rod two, and a guide groove four is formed on the outer wall of the guide block two. The guide groove four is spirally formed on the inner wall of the guide block two. The guide block two is used to guide the cleaning water source. A guide block three is rotatably connected to the outer wall of the central rod two via a bearing. The outer wall of the guide block three is connected to the cleaning water source. The inner wall of the cleaning pipe is slidably connected. The outer wall of the guide block three is provided with a guide groove five, which is used to guide the cleaning water source. The outer wall of the center rod two is fixedly connected with a limit ring three. The outer wall of the limit ring three is rotatably connected to the inner wall of the guide block three through a bearing. The limit ring three is used to limit the guide block three. The center rod two is driven by a hydraulic cylinder two to drive the guide block three to slide in the direction of the hydraulic cylinder two on the inner wall of the cleaning pipe. The outer wall of the guide block three is inserted into and sealed with the inner wall of the guide block two, which is used to intercept the cleaning water source.

[0013] According to the above technical solution, a drive fan is fixedly connected to the outer wall of the second central rod. The outer wall of the drive fan rotates along the inner wall of the second guide block. The drive fan is driven to rotate by a clean water source, which is used to drive the second central rod to rotate. A guide sleeve is fixedly connected to the outer wall of the second central rod. A brush is slidably connected to the inner wall of the guide sleeve. The brush is used to clean the inner wall of the second detection tube.

[0014] According to the above technical solution, an elastic push rod is fixedly connected to the inner wall of the guide sleeve II, and the other end of the elastic push rod is fixedly connected to the inner wall of the brush. The elastic push rod is used to support the brush, so that the brush slides on the inner wall of the guide sleeve II and contacts the inner wall of the detection tube II.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention uses a switching mechanism to switch the second detection tube, preventing the accumulation of radioactive material inside the second detection tube due to prolonged detection, which would affect the accuracy of the detection. This allows the radiation monitoring equipment to monitor medical wastewater more accurately and stably.

[0017] 2. This invention guides the wastewater through a switching mechanism, causing the wastewater to swirl inside the second detection tube. This prevents the wastewater from stratifying during its flow within the second detection tube, which would otherwise prevent some radioactive substances from being detected and affect the accuracy of the detection. This allows the radiation monitoring equipment to monitor medical wastewater more accurately and stably.

[0018] 3. This invention uses a flow guiding mechanism and a switching mechanism to guide wastewater and, during the flow guiding process, crushes and refines the particulate matter in the wastewater, making the particulate matter in the wastewater easier to monitor and preventing stratification during the flow in the detection tube, thereby increasing the accuracy of radiation monitoring equipment in monitoring medical wastewater.

[0019] 4. This invention uses a cleaning mechanism and a switching mechanism to clean the radioactive material residue adhering to the inner wall of the second detection tube after switching, preventing the accumulation of radioactive material on the inner wall of the second detection tube due to prolonged detection, which would affect the measurement results and increase the accuracy of the radiation monitoring equipment in monitoring medical wastewater. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 Cross-sectional view of the present invention Figure 1 ;

[0022] Figure 3 Cross-sectional view of the present invention Figure 2 ;

[0023] Figure 4 Cross-sectional view of the present invention Figure 3 ;

[0024] Figure 5 Cross-sectional view of the present invention Figure 4 ;

[0025] Figure 6 This is a cross-sectional view of the switching mechanism of the present invention;

[0026] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0027] Figure 8This is a cross-sectional view of the detection tube and a schematic diagram of the flow guiding mechanism of the present invention.

[0028] Figure 9 These are cross-sectional views of the detection tube and the flow guiding mechanism of the present invention.

[0029] Figure 10 This is a cross-sectional view of the cleaning tube and a structural schematic diagram of the cleaning mechanism of the present invention;

[0030] Figure 11 A cross-sectional view of the cleaning mechanism of the present invention. Figure 1 ;

[0031] Figure 12 A cross-sectional view of the cleaning mechanism of the present invention. Figure 2 .

[0032] In the diagram: 100, Protective cover; 101, Detection tube one; 102, Cleaning tube; 103, Hydraulic cylinder one; 104, Hydraulic cylinder two; 105, Hydraulic cylinder three; 106, Guide sleeve one; 107, Detection block; 200, Switching mechanism; 201, Switching block; 202, Detection tube two; 203, Stop block one; 204, Stop block two; 205, Guide channel one; 206, Guide hole; 300, Guide mechanism; 301, Center rod one; 302 303. Plug; 304. Guide fan; 305. Limiting ring 1; 306. Guide block 1; 307. Guide channel 2; 308. Stop block 3; 409. Guide channel 3; 400. Cleaning mechanism; 401. Center rod 2; 402. Guide block 2; 403. Guide channel 4; 404. Guide block 3; 405. Guide channel 5; 406. Guide sleeve 2; 407. Brush; 408. Drive fan; 409. Limiting ring 3; 410. Elastic push rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1, please refer to Figures 1-7 The present invention provides a technical solution: a dynamic measuring device for the activity of medical radioactive waste liquid, including a protective cover 100, a hydraulic cylinder 103 fixedly connected to the top of the protective cover 100, a hydraulic cylinder 3 105 fixedly connected to the outer wall of the protective cover 100, a detection tube 101 fixedly connected to the inner wall of the protective cover 100 via a flange, a guide sleeve 106 fixedly connected to the end of the detection tube 101 away from the inner wall of the protective cover 100 via a flange, and a detection block 107 fixedly connected to the outer wall of the guide sleeve 106.

[0035] A switching mechanism 200 is provided on the inner wall of the guide sleeve 106;

[0036] The dynamic measurement device for the activity of medical radioactive waste liquid cannot clean the detection pipeline in a timely manner during long-term dynamic measurement of the waste liquid. This causes radionuclides to be adsorbed and retained on the inner wall of the pipeline, interfering with the detection results and making it impossible to accurately measure the radioactivity in the wastewater. Therefore, a switching mechanism 200 is set up to switch the detection tube 202 to prevent radioactive materials from accumulating inside the detection tube 202 during long-term detection, which would affect the accuracy of the detection. At the same time, the wastewater is guided to create swirling flow inside the detection tube 202, preventing the wastewater from stratifying during the flow process, which would prevent some radioactive materials from being detected and affect the accuracy of the detection.

[0037] The switching mechanism 200 includes a switching block 201. The top of the switching block 201 is fixedly connected to the output end of the hydraulic cylinder 103. The outer wall of the switching block 201 is slidably connected to the inner wall of the guide sleeve 106. A detection tube 202 is provided on the inner wall of the switching block 201. A stop block 203 is rotatably connected to the inner wall of the detection tube 202 via a bearing. A guide groove 205 is provided on the inner wall of the stop block 203. The guide groove 205 is spirally formed on the inner wall of the stop block 203 and is used to guide the wastewater and generate swirling flow on the inner wall of the detection tube 202. A hydraulic cylinder 104 is fixedly connected to the outer wall of the protective cover 100. A cleaning tube 102 is fixedly connected to the inner wall of the protective cover 100 via a flange. The end of the cleaning tube 102 away from the inner wall of the protective cover 100 is fixedly connected to the outer wall of the guide sleeve 106 via a flange. The hydraulic cylinder 103 is used to drive the switching block 201 to slide on the inner wall of the guide sleeve 106. The number of detection tubes 202 is... There are two sets of detection tubes 202. The two sets of detection tubes 202 are equidistantly arrayed on the inner wall of the switching block 201 with the center line of the switching block 201 as the array axis. When the hydraulic cylinder 103 drives the switching block 201 to slide on the inner wall of the guide sleeve 106 to the top of the guide sleeve 106, the detection tube 202 above the switching block 201 corresponds to the cleaning tube 102 and is connected to the cleaning tube 102. The detection tube 202 below the switching block 201 corresponds to the detection tube 101 and is connected to the detection tube 101. When the hydraulic cylinder 103 drives the switching block 201 to slide down on the inner wall of the guide sleeve 106 to the bottom of the guide sleeve 106, the detection tube 202 below the switching block 201 corresponds to the cleaning tube 102 and is connected to the cleaning tube 102. The detection tube 202 above the switching block 201 corresponds to the detection tube 101 and is connected to the detection tube 101, thus switching is performed.

[0038] When the dynamic measurement device for the activity of medical radioactive waste liquid is put into use, medical wastewater is injected through detection tube 101, and hydraulic cylinder 103 is activated to drive switching block 201 to slide on the inner wall of guide sleeve 106, switching the cleaned detection tube 202 to correspond to the position of detection tube 101. Hydraulic cylinder 3105 is then activated to release the obstruction of medical wastewater, allowing it to flow into detection tube 202. The medical wastewater is guided by the guide groove 205 on the inner wall of baffle 203, causing swirling flow inside detection tube 202 to prevent stratification during flow, which would prevent some radioactive materials from being detected. During the flow of wastewater through detection tube 202, dynamic radioactivity is detected by detection block 107. Simultaneously, another set of detection tubes... Position 202 corresponds to the position of cleaning pipe 102. Cleaning water is injected into detection pipe 202 through cleaning pipe 102. Hydraulic cylinder 2104 drives cleaning mechanism 400 into detection pipe 202 to clean the pipe wall. After cleaning, detection pipe 202 located at detection pipe 101 is used for a certain period of time. Then, hydraulic cylinder 103 drives switching block 201 to switch the cleaned detection pipe 202 to detection pipe 101 for testing. At the same time, the uncleaned detection pipe 202 is switched to cleaning pipe 102 by switching block 201 and cleaned by cleaning mechanism 400 to prevent radioactive material from accumulating inside detection pipe 202 and affecting the test results.

[0039] Example 2, based on Example 1, please refer to... Figures 8-9 The present invention provides a technical solution: a flow guiding mechanism 300 is provided on the inner wall of the detection tube 101;

[0040] During the long-term dynamic measurement of the activity of medical radioactive waste liquid, the detection pipeline cannot be cleaned in time, which causes radioactive nuclides to be adsorbed and retained on the inner wall of the pipeline, interfering with the detection results and making it impossible to accurately measure the radioactivity in the wastewater. Therefore, a flow guiding mechanism 300 and a switching mechanism 200 are set up to guide the wastewater and crush and refine the particulate matter in the wastewater during the flow guiding process, making the particulate matter in the wastewater easier to monitor and preventing stratification during the flow of the detection pipeline 202.

[0041] The flow guiding mechanism 300 includes a central rod 301. The end of the central rod 301 closest to the hydraulic cylinder 105 is rotatably connected to the output end of the hydraulic cylinder 105 via a rotating shaft. A plug 302 is fixedly connected to the end of the central rod 301 furthest from the hydraulic cylinder 105. The central rod 301 is driven by the hydraulic cylinder 105 to insert the outer wall of the plug 302 into the inner wall of the stop block 203. A flange is provided on the outer wall of the plug 302 to drive the stop block 203 to move within the detection tube 20. 2. The inner wall rotates, and a guide fan 303 is fixedly connected to the outer wall of the central rod 301. The guide fan 303 drives the central rod 301 to rotate on the inner wall of the hydraulic cylinder 105 through the flow of wastewater. A stop block 307 is slidably connected to the outer wall of the central rod 301. The outer wall of the stop block 307 is fixedly connected to the inner wall of the hydraulic cylinder 105. A guide groove 308 is opened on the inner wall of the stop block 307 to guide the wastewater. A guide block 305 is rotatably connected to the outer wall of the central rod 301 through a bearing. The outer wall of the flow guide block 305 is slidably connected to the inner wall of the hydraulic cylinder 105. A flow guide groove 306 is provided on the inner wall of the flow guide block 305 for guiding wastewater. A limit ring 304 is fixedly connected to the outer wall of the center rod 301. The outer wall of the limit ring 304 is rotatably connected to the inner wall of the flow guide block 305 via a bearing. The limit ring 304 is used to limit the movement of the flow guide block 305. The center rod 301 is driven by the hydraulic cylinder 105 to move the flow guide block 305 within the detection tube 1. When the hydraulic cylinder 3 105 slides in the direction of 01, the guide block 305 and the stop block 3 307 are inserted and sealed to intercept the wastewater. The outer wall of the stop block 203 is fixedly connected to the stop block 204. The inner wall of the stop block 204 is provided with a guide hole 206, which is connected to the guide channel 205. The guide channel 205 is used to guide the wastewater. The stop block 203 rotates on the inner wall of the detection tube 202 to refine the solid particles in the wastewater entering the detection tube 202.

[0042] After wastewater is injected through detection pipe 101, hydraulic cylinder 3105 drives center rod 301, causing center rod 301 to slide guide block 305 on the inner wall of detection pipe 101. This releases guide block 305 from the stop block 307, connecting guide channel 2 306 and guide channel 308, guiding the wastewater into detection pipe 202. Simultaneously, center rod 301, driven by hydraulic cylinder 3105, drives plug 302 into detection pipe 202, where it inserts into the inner wall of stop block 203. Wastewater flows through guide channel 2 306, passing through guide fan 303, which in turn drives guide fan 303 to rotate center rod 301. Simultaneously, plug 302 drives stop block 203 to rotate on the inner wall of detection pipe 202. 2. The plug 203 is inserted into the inner wall of the baffle 203, allowing wastewater to flow through the guide hole 206 and into the guide groove 205. By rotating the baffle 203, solid particles in the wastewater are crushed and refined through the guide hole 206 and the guide groove 205, making it easier to detect radioactive substances in the solid particles in the wastewater. When the detection tube 202 needs to be switched, the hydraulic cylinder 3105 is retracted, causing the hydraulic cylinder 3105 to drive the center rod 301 to slide the guide block 305 on the inner wall of the detection tube 101. At the same time, the guide block 305 is limited by the limiting ring 304, so that the guide block 305 is inserted into the inner wall of the baffle 307, blocking the flow of wastewater. At the same time, the plug 302 leaves the inside of the detection tube 202, so that the detection tube 202 can be switched smoothly.

[0043] Example 3, based on Examples 1 and 2, please refer to... Figures 10-12 The present invention provides a technical solution: a cleaning mechanism 400 is provided on the inner wall of the cleaning pipe 102;

[0044] During the long-term dynamic measurement of the activity of medical radioactive waste liquid, the detection pipeline cannot be cleaned in time, which causes radioactive nuclides to be adsorbed and retained on the inner wall of the pipeline, interfering with the detection results and making it impossible to accurately measure the radioactivity in the wastewater. Therefore, a cleaning mechanism 400 is set up in conjunction with a switching mechanism 200 to clean the radioactive material residue attached to the inner wall of the second detection tube 202 after switching, so as to prevent the radioactive material from accumulating on the inner wall of the second detection tube 202 after long-term detection, thus affecting the measurement results.

[0045] The cleaning mechanism 400 includes a central rod 401, one end of which is close to the hydraulic cylinder 104 and rotatably connected to the output end of the hydraulic cylinder 104 via a rotating shaft. A guide block 402 is slidably connected to the outer wall of the central rod 401. A guide groove 403 is formed on the outer wall of the guide block 402, spirally formed on the inner wall of the guide block 402. The guide block 402 is used to guide the cleaning water source. The outer wall of the central rod 401 rotates via a bearing. A flow guide block 3 404 is connected, and the outer wall of the flow guide block 3 404 is slidably connected to the inner wall of the cleaning pipe 102. A flow guide groove 5 405 is opened on the outer wall of the flow guide block 3 404 for guiding the cleaning water source. A limit ring 3 409 is fixedly connected to the outer wall of the center rod 2 401. The outer wall of the limit ring 3 409 is rotatably connected to the inner wall of the flow guide block 3 404 through a bearing. The limit ring 3 409 is used to limit the movement of the flow guide block 3 404. The center rod 2 401 is connected to a hydraulic cylinder 2. Hydraulic cylinder 104 drives guide block 404 to slide along the inner wall of cleaning pipe 102 towards hydraulic cylinder 104. The outer wall of guide block 404 is inserted into and sealed with the inner wall of guide block 402, used to intercept the clean water source. A drive fan 408 is fixedly connected to the outer wall of center rod 401. The outer wall of drive fan 408 rotates along the inner wall of guide block 402. Drive fan 408 is driven to rotate by the clean water source, used to drive center rod 401 to rotate. A guide sleeve 406 is fixedly connected to the outer wall of 401. A brush 407 is slidably connected to the inner wall of the guide sleeve 406. The brush 407 is used to clean the inner wall of the detection tube 202. An elastic push rod 410 is fixedly connected to the inner wall of the guide sleeve 406. The other end of the elastic push rod 410 is fixedly connected to the inner wall of the brush 407. The elastic push rod 410 is used to support the brush 407, so that the brush 407 slides on the inner wall of the guide sleeve 406 and contacts the inner wall of the detection tube 202.

[0046] The uncleaned detection tube 202 is switched to the cleaning tube 102 by hydraulic cylinder 103 driving switching block 201 to slide on the inner wall of guide sleeve 106. Hydraulic cylinder 104 drives center rod 401, causing guide block 402 to slide on the inner wall of cleaning tube 102 towards detection tube 202. This disengages guide block 3 404 from guide block 2 402, connecting guide channel 403 and guide channel 5 405, allowing clean water to flow into detection tube 202 through cleaning tube 102. Simultaneously, center rod 401 drives guide sleeve 406 into detection tube 202, spirally positioned on guide block 2 402. The inner wall's guide channel 403 guides the clean water source, causing a swirling flow when the water flows towards the drive fan 408, which in turn rotates the drive fan 408. This, in turn, causes the drive fan 408 to rotate the center rod 401, which in turn causes the guide sleeve 406 to rotate inside the detection tube 202. The brush 407 is supported by the elastic push rod 410, allowing its outer wall to contact the inner wall of the detection tube 202. The guide sleeve 406 then drives the brush 407 to rotate within the detection tube 202, cleaning the inner wall of the detection tube 202 and removing any radioactive residues adhering to it. This prevents the radioactive residues from accumulating on the inner wall of the detection tube 202 and affecting the measurement results.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dynamic measuring device for the activity of medical radioactive waste liquid, comprising a protective cover (100), wherein a hydraulic cylinder (103) is fixedly connected to the top of the protective cover (100), and a hydraulic cylinder (105) is fixedly connected to the outer wall of the protective cover (100), characterized in that, The inner wall of the protective cover (100) is fixedly connected to a detection tube (101) via a flange. The end of the detection tube (101) away from the inner wall of the protective cover (100) is fixedly connected to a guide sleeve (106) via a flange. The outer wall of the guide sleeve (106) is fixedly connected to a detection block (107). The inner wall of the guide sleeve (106) is provided with a switching mechanism (200). The switching mechanism (200) includes: The switching block (201) is fixedly connected to the output end of the hydraulic cylinder (103) at its top. The outer wall of the switching block (201) is slidably connected to the inner wall of the guide sleeve (106). The inner wall of the switching block (201) is provided with a detection tube (202). The inner wall of the detection tube (202) is rotatably connected to a stop block (203) through a bearing. The inner wall of the stop block (203) is provided with a guide groove (205). The guide groove (205) is spirally opened on the inner wall of the stop block (203) and is used to guide the wastewater and generate swirling flow on the inner wall of the detection tube (202).

2. The dynamic measurement device for the activity of medical radioactive waste liquid according to claim 1, characterized in that: The inner wall of the detection tube 1 (101) is provided with a flow guiding mechanism (300). The flow guiding mechanism (300) includes a central rod 1 (301). The end of the central rod 1 (301) near the hydraulic cylinder 3 (105) is rotatably connected to the output end of the hydraulic cylinder 3 (105) via a rotating shaft. The end of the central rod 1 (301) away from the hydraulic cylinder 3 (105) is fixedly connected to a plug (302). The central rod 1 (301) is connected to the hydraulic cylinder 3 (105) via a rotating shaft. The drive causes the outer wall of the plug (302) to be inserted into the inner wall of the first stop (203). The outer wall of the plug (302) is provided with a flange, which is used to drive the first stop (203) to rotate on the inner wall of the second detection tube (202) after being inserted into the inner wall of the first stop (203). The outer wall of the first center rod (301) is fixedly connected with a flow guide fan (303). The flow guide fan (303) drives the first center rod (301) to rotate on the inner wall of the third hydraulic cylinder (105) through the flow of wastewater.

3. The dynamic measurement device for the activity of medical radioactive waste liquid according to claim 2, characterized in that: The outer wall of the central rod (301) is slidably connected to a stop block (307). The outer wall of the stop block (307) is fixedly connected to the inner wall of the hydraulic cylinder (105). The inner wall of the stop block (307) is provided with a guide groove (308), which is used to guide the wastewater. The outer wall of the central rod (301) is rotatably connected to a guide block (305) via a bearing. The outer wall of the guide block (305) is slidably connected to the inner wall of the hydraulic cylinder (105). The inner wall of the guide block (305) is provided with a guide groove (306). 06) Used for guiding wastewater, the outer wall of the central rod (301) is fixedly connected to the limiting ring (304), the outer wall of the limiting ring (304) is rotatably connected to the inner wall of the guide block (305) through the bearing, the limiting ring (304) is used to limit the guide block (305), when the central rod (301) is driven by the hydraulic cylinder (105) to drive the guide block (305) to slide in the direction of the hydraulic cylinder (105) on the inner wall of the detection tube (101), the guide block (305) is inserted and sealed with the stop block (307) to intercept the wastewater.

4. The dynamic measurement device for the activity of medical radioactive waste liquid according to claim 1, characterized in that: The outer wall of the first baffle (203) is fixedly connected to the second baffle (204). The inner wall of the second baffle (204) is provided with a guide hole (206). The guide hole (206) is connected to the first guide channel (205). The first guide channel (205) is used to guide the wastewater. The first baffle (203) rotates on the inner wall of the second detection tube (202) to refine the solid particles in the wastewater entering the second detection tube (202).

5. The dynamic measurement device for the activity of medical radioactive waste liquid according to claim 1, characterized in that: A hydraulic cylinder (104) is fixedly connected to the outer wall of the protective cover (100). A cleaning pipe (102) is fixedly connected to the inner wall of the protective cover (100) via a flange. The end of the cleaning pipe (102) away from the inner wall of the protective cover (100) is fixedly connected to the outer wall of the guide sleeve (106) via a flange. The hydraulic cylinder (103) is used to drive the switching block (201) to slide on the inner wall of the guide sleeve (106). There are two sets of detection pipes (202). The two sets of detection pipes (202) are equidistantly arrayed on the inner wall of the switching block (201) with the center line of the switching block (201) as the array axis. When the hydraulic cylinder (103) drives the switching block (201) to slide on the inner wall of the guide sleeve (106) to the top of the guide sleeve (106), it is located on the switching block (201). 01) The detection tube 2 (202) above corresponds to the cleaning tube (102) and is connected to the cleaning tube (102). The detection tube 2 (202) below the switching block (201) corresponds to the detection tube 1 (101) and is connected to the detection tube 1 (101). When the hydraulic cylinder 1 (103) drives the switching block (201) to slide down the inner wall of the guide sleeve 1 (106) to the bottom of the guide sleeve 1 (106), the detection tube 2 (202) below the switching block (201) corresponds to the cleaning tube (102) and is connected to the cleaning tube (102). The detection tube 2 (202) above the switching block (201) corresponds to the detection tube 1 (101) and is connected to the detection tube 1 (101), and switching is performed.

6. The dynamic measurement device for the activity of medical radioactive waste liquid according to claim 5, characterized in that: The cleaning pipe (102) is equipped with a cleaning mechanism (400) on its inner wall. The cleaning mechanism (400) includes a central rod (401) at one end near the hydraulic cylinder (104) and is rotatably connected to the output end of the hydraulic cylinder (104) via a rotating shaft. A guide block (402) is slidably connected to the outer wall of the central rod (401). A guide groove (403) is provided on the outer wall of the guide block (402). The guide groove (403) is spirally formed on the inner wall of the guide block (402). The guide block (402) is used to guide the cleaning water source. A guide block (404) is rotatably connected to the outer wall of the central rod (401) via a bearing. The outer wall of the guide block (404) is connected to the cleaning pipe (102). The inner wall is slidably connected, and the outer wall of the guide block three (404) is provided with a guide groove five (405). The guide groove five (405) is used to guide the cleaning water source. The outer wall of the center rod two (401) is fixedly connected with a limit ring three (409). The outer wall of the limit ring three (409) is rotatably connected to the inner wall of the guide block three (404) through a bearing. The limit ring three (409) is used to limit the guide block three (404). The center rod two (401) is driven by the hydraulic cylinder two (104) to drive the guide block three (404) to slide in the direction of the hydraulic cylinder two (104) on the inner wall of the cleaning pipe (102). The outer wall of the guide block three (404) is inserted into and sealed with the inner wall of the guide block two (402) to intercept the cleaning water source.

7. The dynamic measurement device for the activity of medical radioactive waste liquid according to claim 6, characterized in that: A drive fan (408) is fixedly connected to the outer wall of the second central rod (401). The outer wall of the drive fan (408) rotates along the inner wall of the second guide block (402). The drive fan (408) is driven to rotate by a clean water source, which is used to drive the second central rod (401) to rotate. A guide sleeve (406) is fixedly connected to the outer wall of the second central rod (401). A brush (407) is slidably connected to the inner wall of the guide sleeve (406). The brush (407) is used to clean the inner wall of the second detection tube (202).

8. The dynamic measurement device for the activity of medical radioactive waste liquid according to claim 7, characterized in that: An elastic push rod (410) is fixedly connected to the inner wall of the guide sleeve (406). The other end of the elastic push rod (410) is fixedly connected to the inner wall of the brush (407). The elastic push rod (410) is used to support the brush (407), so that the brush (407) slides on the inner wall of the guide sleeve (406) and contacts the inner wall of the detection tube (202).

Images