Radioactive waste liquid detector with automatic cleaning function

Abstract

The utility model discloses an automatic cleaning radioactive waste liquid detector, which belongs to the technical field of radioactive detection instruments and comprises a tank body, an overflow pipe, a water inlet pipe, a water outlet pipe, a cleaning component, a measuring component and a limiting component. By means of the mode, when the device works, the external valve connected with the water outlet pipe is closed, waste liquid enters from the water inlet pipe, the liquid level rises, an air bag of a floating assembly of the measuring assembly lifts a floating disc, the floating disc always floats above the liquid level according to the liquid level, and a fixed distance is kept between a probe and the liquid level for detection; the sliding rod also slides up and down along the sliding hole; the overflowing waste liquid is continuously discharged from the overflow pipe until the liquid level reaches the height of the overflow pipe; the air bag floats on the liquid level, so that the probe can continuously keep the same distance for detection, and measurement deviation caused by liquid level descending is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of radioactive detection instruments, in particular to an automatic cleaning radioactive waste liquid detector. Background Art

[0002] Medical radioactive waste liquid mainly comes from radiological diagnosis and treatment in nuclear medicine departments of hospitals. Patients undergo ECT and PET-CT imaging examinations and need to be injected with radioactive drugs. The urine and feces produced during the period and the water used by medical staff for injection and cleaning are all medical radioactive waste liquid. Medical radioactive waste liquid cannot be discharged directly, but needs to be decayed and can only be discharged after the radioactivity meets the standard. Therefore, it is necessary to test the radioactivity of the waste liquid to ensure that the discharged waste liquid meets the discharge standard, or to facilitate environmental protection treatment later.

[0003] In the process of radioactive liquid waste detection, in order to measure the waste liquid in real time, it is necessary to embed the probe into the sampling container and let water in from the outside to achieve online detection.

[0004] Chinese patent CN206710615U discloses an online liquid radiation monitor for a nuclear power plant, which realizes online monitoring by opening a radiation detection port at the bottom of a sampling container, discharging sewage from a sampling inlet pipe and then discharging it from a sampling outlet pipe.

[0005] However, the above patent cannot make the probe close to the liquid surface during detection. When the liquid level is low, the probe is far away from the liquid surface, and there will be a certain deviation in the measurement.

[0006] Based on this, the utility model designs an automatic cleaning radioactive waste liquid detector to solve the above problems. Utility Model Content

[0007] In view of the above-mentioned shortcomings of the prior art, the utility model provides an automatic cleaning radioactive waste liquid detector.

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] An automatically cleaned radioactive liquid waste detector includes a tank body;

[0010] The upper and lower ends of the side wall of the tank body are respectively fixedly connected with an overflow pipe and a water inlet pipe, and the bottom of the tank body is fixedly connected with a water outlet pipe;

[0011] The tank body is equipped with a measuring component for automatically adjusting the height according to the liquid level and performing detection, and a cleaning component for cleaning the inside of the device, and the measuring component is connected to the cleaning component;

[0012] A limiting component for limiting the liquid level and the position of the measuring component is installed on the measuring component, and the limiting component is connected to the inner wall of the tank body.

[0013] Furthermore, the water outlet pipe is installed at the center of the bottom surface of the tank body, and the center of the inner bottom surface of the tank body is low and the surroundings are high.

[0014] Furthermore, the measuring assembly includes a sliding assembly and a floating assembly; the sliding assembly is connected to the top of the tank body, and the floating assembly is installed at the lower end of the sliding assembly; the sliding assembly is connected to the cleaning assembly, and the floating assembly is connected to the limiting assembly.

[0015] Furthermore, the sliding assembly includes a sliding hole, a sliding rod and a limiting plate; a sliding hole is opened on the top of the tank body, the side wall of the sliding rod is slidingly connected to the inner wall of the sliding hole, and the top of the sliding rod is fixedly connected to the limiting plate; the sliding rod is connected to the cleaning assembly.

[0016] Furthermore, the floating assembly includes a floating plate, an airbag and a probe; the top of the floating plate is fixedly connected to the bottom of the sliding rod, the bottom of the floating plate is fixedly connected to the top of the airbag, and the inner wall of the floating plate is fixedly connected with the probe; the top of the floating plate is connected to the limit assembly.

[0017] Furthermore, the airbag is annular.

[0018] Furthermore, the limit assembly includes a protrusion and a contact switch; the protrusion is fixedly connected to the top of the floating plate, the contact switch is fixedly connected to the inner top of the tank body, and the protrusion and the contact switch are located on the same vertical line.

[0019] Furthermore, the cleaning assembly includes a nozzle, an electric push rod and a connecting rod; multiple groups of nozzles are fixedly connected to the inner bottom of the tank body; the side wall of the tank body is fixedly connected to the electric push rod; one end of the connecting rod is fixedly connected to the output end of the electric push rod, and the other end of the connecting rod is limitedly slidably connected to the side wall of the sliding rod.

[0020] Furthermore, the nozzles are evenly distributed along the circumferential direction of the inner bottom surface of the tank body.

[0021] Furthermore, the electric push rod is fixedly connected to the side wall of the tank body through a sheet metal connector.

[0022] The utility model has the following technical effects:

[0023] 1. When the utility model is working, the external valve connected to the water outlet pipe is closed, waste liquid enters from the water inlet pipe, the liquid level rises, and the air bag of the floating assembly of the measuring assembly lifts the floating plate, so that the floating plate always floats above the liquid surface according to the liquid level, and the probe and the liquid surface maintain a fixed distance for detection. At the same time, the sliding rod also slides up and down along the sliding hole; until the liquid level reaches the height of the overflow pipe, the overflowed waste liquid is continuously discharged from the overflow pipe; by using the air bag to float on the liquid surface, the probe can continuously maintain the same distance for detection, thereby preventing the liquid level from dropping and causing measurement deviations.

[0024] 2. When the utility model is working, in order to prevent the overflow pipe from being blocked and causing the liquid level in the tank to be too high, when the floating plate moves to a position higher than the safe distance, the protrusion contacts the contact switch and sends an electrical signal to the external control system, thereby closing the external valve connected to the water inlet pipe, stopping the water inlet and preventing damage to the equipment.

[0025] 3. When the utility model is working, when the device needs to be cleaned, the external valve connected to the water outlet pipe is opened to discharge the waste liquid; the output end of the electric push rod of the cleaning component extends, driving the connecting rod to move upward, thereby pushing the limit plate and the sliding rod to slide upward, driving the floating plate to move upward until the protrusion contacts the contact switch, thereby closing the external valve connected to the water inlet pipe and stopping the water inlet; then the nozzle sprays water to clean the inner wall of the tank and the floating plate, thereby achieving rapid cleaning without manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A three-dimensional diagram of an automatic cleaning radioactive waste liquid detector of the utility model;

[0028] Figure 2 It is a front view of an automatic cleaning radioactive waste liquid detector of the utility model;

[0029] Figure 3 It is a left view of an automatic cleaning radioactive waste liquid detector of the utility model;

[0030] Figure 4 For along Figure 3 AA direction cross-sectional view.

[0031] The numbers in the figure represent:

[0032] 1. Tank body; 2. Measuring assembly; 21. Sliding assembly; 211. Sliding hole; 212. Sliding rod; 213. Limiting piece; 22. Floating assembly; 221. Floating disc; 222. Airbag; 223. Probe; 3. Limiting assembly; 31. Bump; 32. Contact switch; 4. Cleaning assembly; 41. Nozzle; 42. Electric push rod; 43. Connecting rod; 5. Water inlet pipe; 6. Water outlet pipe; 7. Overflow pipe. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] The utility model is further described below in conjunction with embodiments.

[0035] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0036] Example 1

[0037] Please refer to the instruction manual Figure 1-4 , an automatic cleaning radioactive waste liquid detector, comprising a tank body 1;

[0038] The upper and lower ends of the side wall of the tank body 1 are respectively fixedly connected with an overflow pipe 7 and a water inlet pipe 5, and the bottom of the tank body 1 is fixedly connected with a water outlet pipe 6;

[0039] The tank body 1 is equipped with a measuring component 2 for automatically adjusting the height according to the liquid level and performing detection, and a cleaning component 4 for cleaning the inside of the device, and the measuring component 2 is connected to the cleaning component 4;

[0040] The measuring component 2 is provided with a limit component 3 for limiting the liquid level and the position of the measuring component 2 , and the limit component 3 is connected to the inner wall of the tank body 1 .

[0041] Preferably, the water outlet pipe 6 is installed at the center of the bottom surface of the tank body 1, and the center of the inner bottom surface of the tank body 1 is low and the surroundings are high.

[0042] The measuring component 2 includes a sliding component 21 and a floating component 22; the sliding component 21 is connected to the top of the tank body 1, and the floating component 22 is installed at the lower end of the sliding component 21; the sliding component 21 is connected to the cleaning component 4, and the floating component 22 is connected to the limit component 3.

[0043] The sliding assembly 21 includes a sliding hole 211, a sliding rod 212 and a limiting plate 213; a sliding hole 211 is opened on the top of the tank body 1, the side wall of the sliding rod 212 is slidingly connected to the inner wall of the sliding hole 211, and the top of the sliding rod 212 is fixedly connected to the limiting plate 213; the sliding rod 212 is connected to the cleaning assembly 4.

[0044] The floating assembly 22 includes a floating plate 221, an airbag 222 and a probe 223; the top of the floating plate 221 is fixedly connected to the bottom of the sliding rod 212, the bottom of the floating plate 221 is fixedly connected to the top of the airbag 222, and the inner wall of the floating plate 221 is fixedly connected with the probe 223; the top of the floating plate 221 is connected to the limit assembly 3.

[0045] Preferably, the airbag 222 is annular.

[0046] When the utility model is working, the external valve connected to the outlet pipe 6 is closed, waste liquid enters from the inlet pipe 5, the liquid level rises, and the airbag 222 of the floating assembly 22 of the measuring assembly 2 lifts the floating plate 221, so that the floating plate 221 always floats above the liquid surface according to the liquid level, and the probe 223 maintains a fixed distance from the liquid surface for detection. At the same time, the sliding rod 212 also slides up and down along the sliding hole 211; until the liquid level reaches the height of the overflow pipe 7, the overflowed waste liquid is continuously discharged from the overflow pipe 7; by using the airbag 222 to float on the liquid surface, the probe 223 can continuously maintain the same distance for detection, thereby preventing the liquid level from dropping and causing measurement deviations.

[0047] Example 2

[0048] like Figure 1-4 As shown, as a preferred embodiment of the utility model, the limit assembly 3 includes a protrusion 31 and a contact switch 32; the protrusion 31 is fixedly connected to the top of the floating plate 221, and the contact switch 32 is fixedly connected to the inner top of the tank body 1, and the protrusion 31 and the contact switch 32 are located on the same vertical line.

[0049] When the utility model is working, in order to prevent the overflow pipe 7 from being blocked and causing the liquid level in the tank body 1 to be too high, when the floating plate 221 moves to a position higher than the safe distance, the protrusion 31 contacts the contact switch 32, and sends an electrical signal to the external control system, thereby closing the external valve connected to the water inlet pipe 5, stopping the water inlet and preventing damage to the equipment.

[0050] Example 3

[0051] like Figure 1-4As shown, as a preferred embodiment of the utility model, the cleaning assembly 4 includes a nozzle 41, an electric push rod 42 and a connecting rod 43; a plurality of nozzles 41 are fixedly connected to the inner bottom of the tank body 1; the side wall of the tank body 1 is fixedly connected to the electric push rod 42; one end of the connecting rod 43 is fixedly connected to the output end of the electric push rod 42, and the other end of the connecting rod 43 is limitedly slidably connected to the side wall of the sliding rod 212.

[0052] Preferably, the nozzles 41 are evenly distributed along the circumferential direction of the inner bottom surface of the tank body 1 .

[0053] Preferably, the electric push rod 42 is fixedly connected to the side wall of the tank body 1 through a sheet metal connector.

[0054] When the utility model is working, when the device needs to be cleaned, the external valve connected to the water outlet pipe 6 is opened to discharge the waste liquid; the output end of the electric push rod 42 of the cleaning component 4 extends, driving the connecting rod 43 to move upward, thereby pushing the limit plate 213 and the sliding rod 212 to slide upward, driving the floating plate 221 to move upward until the protrusion 31 contacts the contact switch 32, thereby closing the external valve connected to the water inlet pipe 5 and stopping water intake; then the nozzle 41 sprays water to clean the inner wall of the tank body 1 and the floating plate 221, thereby achieving rapid cleaning without manual operation.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic cleaning radioactive waste liquid detector, comprising a tank (1), characterized in that: The upper and lower ends of the side wall of the tank body (1) are respectively fixedly connected with an overflow pipe (7) and a water inlet pipe (5), and the bottom of the tank body (1) is fixedly connected with a water outlet pipe (6); The tank body (1) is equipped with a measuring component (2) for automatically adjusting the height according to the liquid level and performing detection, and a cleaning component (4) for cleaning the inside of the device, and the measuring component (2) is connected to the cleaning component (4); A limiting component (3) for limiting the liquid level and the position of the measuring component (2) is installed on the measuring component (2); the limiting component (3) is connected to the inner wall of the tank body (1).

2. The automatic cleaning radioactive waste liquid detector according to claim 1, characterized in that: The water outlet pipe (6) is installed at the center of the bottom surface of the tank body (1), and the center of the inner bottom surface of the tank body (1) is low and the surrounding areas are high.

3. The automatic cleaning radioactive waste liquid detector according to claim 2, characterized in that: The measuring component (2) comprises a sliding component (21) and a floating component (22); the sliding component (21) is connected to the top of the tank body (1), and the floating component (22) is installed at the lower end of the sliding component (21); the sliding component (21) is connected to the cleaning component (4), and the floating component (22) is connected to the limit component (3).

4. The automatic cleaning radioactive waste liquid detector according to claim 3, characterized in that: The sliding assembly (21) comprises a sliding hole (211), a sliding rod (212) and a limiting plate (213); the top of the tank body (1) is provided with a sliding hole (211); the side wall of the sliding rod (212) is connected to the inner wall of the sliding hole (211) in a limiting sliding manner; the top of the sliding rod (212) is fixedly connected to the limiting plate (213); and the sliding rod (212) is connected to the cleaning assembly (4).

5. The automatic cleaning radioactive waste liquid detector according to claim 4, characterized in that: The floating assembly (22) comprises a floating plate (221), an airbag (222) and a probe (223); the top of the floating plate (221) is fixedly connected to the bottom of the sliding rod (212), the bottom of the floating plate (221) is fixedly connected to the top of the airbag (222), and the inner wall of the floating plate (221) is fixedly connected with the probe (223); the top of the floating plate (221) is connected to the limit assembly (3).

6. The automatic cleaning radioactive waste liquid detector according to claim 5, characterized in that: The airbag (222) is annular.

7. The automatic cleaning radioactive waste liquid detector according to claim 6, characterized in that: The limit assembly (3) comprises a protrusion (31) and a contact switch (32); the protrusion (31) is fixedly connected to the top of the floating plate (221), and the contact switch (32) is fixedly connected to the inner top of the tank body (1); the protrusion (31) and the contact switch (32) are located on the same vertical line.

8. The automatic cleaning radioactive waste liquid detector according to claim 7, characterized in that: The cleaning assembly (4) comprises a nozzle (41), an electric push rod (42) and a connecting rod (43); a plurality of nozzles (41) are fixedly connected to the inner bottom of the tank body (1); the electric push rod (42) is fixedly connected to the side wall of the tank body (1); one end of the connecting rod (43) is fixedly connected to the output end of the electric push rod (42), and the other end of the connecting rod (43) is limitedly slidably connected to the side wall of the sliding rod (212).

9. The automatic cleaning radioactive waste liquid detector according to claim 8, characterized in that: The spray heads (41) are evenly distributed along the circumferential direction of the inner bottom surface of the tank body (1).

10. The automatic cleaning radioactive waste liquid detector according to claim 9, characterized in that: The electric push rod (42) is fixedly connected to the side wall of the tank body (1) via a sheet metal connector.

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