Concentration device suitable for detecting radioactive substances in wastewater

Abstract

The concentration device comprises an electric heating plate (1) and a beaker (2) placed on the electric heating plate (1), and further comprises a bottom plate (4) located on the lower side of the electric heating plate (1), a supporting plate (5) located above the beaker (2) and a controller (3), the supporting plate (5) is connected with the bottom plate (4) through a supporting rod (6), a container (7) with an opening in the top is arranged on the supporting plate (5), and the controller (3) is connected with the container (7). The bottom of the container (7) is provided with a water outlet (8), the water outlet (8) is provided with an electric valve (9), a floater (10) is arranged in the beaker (2), one side of the beaker (2) is provided with three sensors (11) which are arranged up and down, and the electric valve (9), the sensors (11) and the electric heating plate (1) are all connected with the controller (3). The wastewater concentration device has the advantage of being capable of automatically concentrating wastewater to a required volume, and is beneficial for a detector to synchronously carry out other works.

Description

Technical Field

[0001] The utility model belongs to the field of wastewater concentration devices, in particular to a concentration device suitable for detecting radioactive substances in wastewater. Background Art

[0002] When detecting radioactive substances in wastewater, it is necessary to use a concentrator to concentrate the wastewater sample first. The sample is concentrated to about 50mL. When the sample volume is large and the concentrator cannot hold it all at once, it can be added in batches.

[0003] The existing concentration device consists of an adjustable temperature electric heating plate and a beaker placed on the heating plate. The temperature of the heating plate is controlled at around 80°C, allowing the sample to evaporate and concentrate under slightly boiling conditions. To prevent the sample from splashing during the slightly boiling process, the sample volume in the beaker should not exceed half of the beaker capacity. As a result, the sample may not be able to be placed in the beaker all at once. Instead, a portion is taken in first, concentrated, and then a portion is added until the addition is complete.

[0004] Existing concentration devices have the following drawbacks: the concentration process is lengthy and requires a person to be on duty constantly to add sample to the beaker promptly. Once all the sample has been added and the sample has been concentrated to 50 mL, the beaker must be removed promptly to prevent the sample from drying out and solidifying. This constant on-call requirement increases the inspector's workload and hinders their ability to perform other tasks simultaneously. Utility Model Content

[0005] The purpose of the present invention is to provide a concentrator suitable for detecting radioactive substances in wastewater. The present invention has the advantage of automatically concentrating wastewater to a desired volume, which is convenient for inspectors to carry out other tasks simultaneously.

[0006] The technical solution of the utility model is as follows: a concentration device suitable for detecting radioactive substances in wastewater, comprising an electric heating plate and a beaker placed on the electric heating plate, further comprising a bottom plate located at the lower side of the electric heating plate, a supporting plate located above the beaker, and a controller, wherein the supporting plate is connected to the bottom plate through a support rod, a container with a top opening is provided on the supporting plate, a water outlet passing through the supporting plate is provided at the bottom of the container, an electric valve is provided at the water outlet, a float is provided in the beaker, three sensors arranged up and down are provided on one side of the beaker, the sensors are used to detect the height of the float, and the electric valve, the sensor and the electric heating plate are all connected to the controller.

[0007] In the aforementioned concentration device suitable for detecting radioactive substances in wastewater, a vertical guide column is provided on one side of the electric heating plate, a guide sleeve is provided on the guide column, a locking mechanism is provided between the guide sleeve and the guide column, and the guide sleeve is connected to three sensors through a bracket.

[0008] In the aforementioned concentrator suitable for detecting radioactive substances in wastewater, the horizontal cross-section of the container is circular, the bottom of the container is conical, and the water outlet is located at the lowest point of the container.

[0009] In the aforementioned concentration device suitable for detecting radioactive substances in wastewater, an annular support plate is provided on the support plate, the support plate is close to the outer wall of the container, and an annular rubber strip is provided on the top of the support plate.

[0010] In the aforementioned concentration device suitable for detecting radioactive substances in wastewater, a frustum protrusion is provided at the bottom of the container, the container contacts the support plate through the frustum protrusion, and the water outlet passes through the axis of the frustum protrusion.

[0011] In the aforementioned concentration device suitable for detecting radioactive substances in wastewater, the float is in the shape of a circular ring, and the outer diameter of the float is loosely matched with the inner diameter of the beaker.

[0012] In the aforementioned concentration device suitable for detecting radioactive substances in wastewater, the sensor is a photoelectric sensor.

[0013] Compared with the prior art, the present invention is based on the existing concentration device. A container is set above the beaker. The water outlet at the bottom of the container has an electric valve. The remaining sample can be placed in the container. Three sensors arranged vertically on one side of the beaker are set. A float is set in the beaker to detect the liquid level of the beaker. When the concentrated wastewater level in the beaker drops to a certain height, the wastewater in the container can be automatically replenished to the beaker, and the replenishment does not exceed half the capacity of the beaker to prevent the wastewater in the beaker from boiling and splashing. In this way, the wastewater in the container can be put into the beaker in batches, without the need for the inspector to be on duty to add it. When all the wastewater in the container enters the beaker and the wastewater in the beaker is concentrated to the required volume, the electric heating plate will automatically stop working, and there is no need for the inspector to be on duty to shut it down to avoid dry burning. The inspector can simultaneously carry out other work while concentrating the wastewater. Therefore, the present invention has the advantage of being able to automatically concentrate wastewater to the required volume, which is beneficial for the inspector to carry out other work simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view schematic diagram of the present utility model.

[0015] Figure 2 yes Figure 1 Schematic diagram at AA.

[0016] The marks in the accompanying drawings are: 1-electric heating plate, 2-beaker, 3-controller, 4-bottom plate, 5-support plate, 6-support rod, 7-container, 8-water outlet, 9-electric valve, 10-float, 11-sensor, 12-guide column, 13-guide sleeve, 14-bracket, 15-support plate, 16-rubber strip, 17-cone protrusion, 18-hand-tightening bolt. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0018] Example 1. A concentrator suitable for detecting radioactive substances in wastewater, such as Figure 1 As shown, it includes a temperature-adjustable electric heating plate 1 and a beaker 2 placed on the electric heating plate 1. The beaker has a capacity of 500 mL and has the following features:

[0019] It also includes a bottom plate 4 located at the lower side of the electric heating plate 1, a support plate 5 located above the beaker 2 and a controller 3. The controller 3 is fixed on the bottom plate 4. The support plate 5 is connected to the bottom plate 4 through four support rods 6. One end of the support rod 6 is screwed to the support plate 5, and the other end of the support rod 6 is screwed to the bottom plate 4. A container 7 with a top opening is provided on the support plate 5. The volume of the container 7 is 3L. A water outlet 8 is provided at the bottom of the container 7 through the support plate 5. The water outlet 8 is provided with an electric valve 9. A float 10 is provided in the beaker 2. Three sensors 11 arranged up and down are provided on one side of the beaker 2. The sensor 11 is a photoelectric type. The sensor 11 is used to detect the height of the float 10. The electric valve 9, the sensor 11 and the electric heating plate 1 are all connected to the controller 3.

[0020] A vertical guide column 12 is provided on one side of the electric heating plate 1, and a guide sleeve 13 is provided on the guide column 12. A locking mechanism is provided between the guide sleeve 13 and the guide column 12. The locking mechanism is a hand-tightening bolt 18. The hand-tightening bolt 18 passes through one side of the guide sleeve 13 and abuts against the guide column 12. The guide sleeve 13 is connected to the three sensors 11 through the bracket 14.

[0021] The horizontal cross-section of the container 7 is circular. To facilitate the wastewater in the container 7 to enter the beaker 2 more thoroughly, the bottom of the container 7 is conical, and the water outlet 8 is located at the lowest point of the container 7.

[0022] The support plate 5 is provided with an annular support plate 15, which is close to the outer wall of the container 7. The top of the support plate 15 is provided with an annular rubber strip 16. The bottom of the container 7 is provided with a truncated cone protrusion 17, through which the container 7 contacts the support plate 5, and the water outlet 8 passes through the axis of the truncated cone protrusion 17. When the container 7 is lowered, the bottom of the container 7 first contacts the rubber strip 16, which elastically deforms. Then the truncated cone protrusion 17 contacts the bottom plate 4. The truncated cone protrusion 17 and the bottom plate 4 are in surface contact, which determines the height of the container 7. The outer ring of the bottom of the container 7 and the flexible support of the rubber strip 16 make the container 7 more stable and less likely to tip over.

[0023] The float 10 is annular, and its outer diameter is 0.5-1 mm smaller than the inner diameter of the beaker 2. The float 10 is made of plastic with a density lower than that of water.

[0024] Usage: For ease of description, the three sensors 11 from top to bottom are named sensor A, sensor B, and sensor C respectively. Take a beaker, pour some wastewater into the beaker, and return the beaker to the hot plate 1. The liquid level in the beaker should be maintained between sensor A and sensor B. Sensor A points to the scale line at the 200mL capacity of the beaker, sensor B points to the scale line at the 100mL capacity of the beaker, and sensor C points to the scale line at the 50mL capacity of the beaker.

[0025] The remaining wastewater is poured into the container 7. The controller 3 is turned on, and the controller 3 connects the electric heating plate 1 to the mains power, and the electric heating plate 1 works, and the heating temperature of the electric heating plate 1 is set to 80° C., so that the wastewater in the beaker 2 is concentrated.

[0026] As the liquid level in beaker 2 drops, float 10 descends. When float 10 reaches the same height as sensor B, sensor B outputs a first signal to the controller, which opens electric valve 9. The wastewater in container 7 enters beaker 2, raising the liquid level in beaker 2 and driving float 10 upward. When float 10 reaches the same height as sensor A, sensor A outputs a second signal to the controller, which closes electric valve 9, stopping the wastewater in container 7 from entering beaker 2. This cycle continues until all the wastewater in container 7 has entered beaker 2 and continues to concentrate until float 10 reaches the same height as sensor C. The volume of concentrated wastewater in beaker 2 is approximately 50 mL. Sensor C then outputs a third signal to controller 3, which turns off electric hot plate 1.

[0027] During the entire concentration process, inspectors only need to add wastewater in the initial stage and no subsequent management is required.

[0028] With further optimization, an alarm may be connected to the controller 3. When the sensor C outputs the third signal to the controller 3, the controller 3 activates the alarm to alert the inspector.

[0029] Example 2. Unlike Example 1, the sensor 11 is a metal sensor, and the float 10 is a hollow metal tube that can float on the water surface, or a metal layer is provided on a low-density plastic ring. When the float 10 approaches the sensor 11, the sensor 11 generates a signal.

[0030] Compared with Example 1, Example 2 is applicable to most relatively transparent wastewater, while Example 2 is applicable to some special wastewater with very dark color.

[0031] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A concentration device suitable for detecting radioactive substances in wastewater, comprising a hot plate (1) and a beaker (2) placed on the hot plate (1), characterized in that: The invention also comprises a bottom plate (4) located at the lower side of the electric heating plate (1), a supporting plate (5) located above the beaker (2), and a controller (3); the supporting plate (5) is connected to the bottom plate (4) via a supporting rod (6); a container (7) with an open top is provided on the supporting plate (5); a water outlet (8) passing through the supporting plate (5) is provided at the bottom of the container (7); the water outlet (8) is provided with an electric valve (9); a float (10) is provided in the beaker (2); three sensors (11) arranged up and down are provided on one side of the beaker (2); the sensors (11) are used to detect the height of the float (10); the electric valve (9), the sensor (11) and the electric heating plate (1) are all connected to the controller (3).

2. The concentrator suitable for detecting radioactive substances in wastewater according to claim 1, characterized in that: A vertical guide column (12) is provided on one side of the electric heating plate (1), a guide sleeve (13) is provided on the guide column (12), a locking mechanism is provided between the guide sleeve (13) and the guide column (12), and the guide sleeve (13) is connected to the three sensors (11) through a bracket (14).

3. The concentrator suitable for detecting radioactive substances in wastewater according to claim 1, characterized in that: The horizontal cross-section of the container (7) is circular, the bottom of the container (7) is conical, and the water outlet (8) is located at the lowest point of the container (7).

4. The concentrator suitable for detecting radioactive substances in wastewater according to claim 3, characterized in that: An annular support plate (15) is provided on the support plate (5), the support plate (15) is close to the outer wall of the container (7), and an annular rubber strip (16) is provided on the top of the support plate (15).

5. The concentrator suitable for detecting radioactive substances in wastewater according to claim 3, characterized in that: The bottom of the container (7) is provided with a truncated cone protrusion (17), the container (7) contacts the support plate (5) through the truncated cone protrusion (17), and the water outlet (8) passes through the axis of the truncated cone protrusion (17).

6. The concentrator suitable for detecting radioactive substances in wastewater according to claim 1, characterized in that: The float (10) is in the shape of a ring, and the outer diameter of the float (10) is loosely matched with the inner diameter of the beaker (2).

7. The concentrator suitable for detecting radioactive substances in wastewater according to claim 6, characterized in that: The sensor (11) is photoelectric.

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