A water sample pre-treatment filtration device for radiochemical analysis

Abstract

The utility model discloses a kind of water sample radiochemical analysis pretreatment suction filtration device, including water sample bucket, sample bucket, pump machine, the input and output end of pump machine is uniformly fixed with output hose, horizontal frame is placed on the water sample bucket, slot is opened in the horizontal frame, output hose passes through slot and extends into water sample bucket, suction head is fixedly connected at the end of output hose, float plate is fixedly connected on the suction head, filter head is connected with the lower end of suction head, filter head is fixedly connected with filter core in, sleeve clamp ring is arranged above horizontal frame. By using float plate, the suction head can be suspended above the solution. When extracting the solution, the disturbance of the sediments at the bottom of the water sample bucket can be avoided as much as possible. As the solution in the water sample bucket decreases, the situation of the sediments in the water sample bucket is closely monitored. When the suction head disturbs the sediments at the bottom of the water sample bucket, the machine can be stopped to manually transfer the remaining solution, effectively avoiding the problem of disturbing the sediments at the bottom of the water sample bucket due to lack of experience.

Description

Technical Field

[0001] This utility model relates to a filtration device, and more particularly to a filtration device for pretreatment of water samples for radiochemical analysis. Background Technology

[0002] Radiochemical laboratory analysis involves a wide variety of samples and analytical items. Its characteristics include: the sample volume is generally 30-50L, the pretreatment container is large and requires a custom-made acid and alkali resistant tank; the pretreatment process requires multiple water intake and drainage, which takes a long time and cannot disturb the sediment at the bottom of the container. In order to reduce the workload of operators, a vacuum filtration device is required.

[0003] For example, a cesium-137 water sample radiochemical analysis pretreatment filtration device, disclosed in Chinese Patent Publication No. CN214472025U, includes a water sample container, a suction pipe support next to the water sample container, a suction pipe on the suction pipe support, a retractable suction pipe connected to the front end of the suction pipe, a filter head installed at the front end of the retractable suction pipe, and a water pump drawing the water sample into the sample container. This cesium-137 water sample radiochemical analysis pretreatment device allows for easy water extraction without moving large volumes of water samples; it prevents vibration effects from being transmitted to the sample container during extraction, effectively avoiding sample scattering; and this device improves the efficiency of laboratory water sample pretreatment. Some problems were found when using the existing cesium-137 water sample pretreatment filtration device for radiochemical analysis. First, it is necessary to carefully control the distance between the filter head and the bottom of the water sample container and the pumping speed. It requires the operator's experience and intuition. For first-time operators, it is difficult to perform the drainage operation without disturbing the bottom sediment. Utility Model Content

[0004] The purpose of this invention is to provide a water sample pretreatment filtration device for radiochemical analysis, so as to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water sample pretreatment filtration device for radiochemical analysis, comprising a water sample bucket, a sample bucket, and a pump. Both the input and output ends of the pump are fixedly connected to output hoses. A horizontal frame is placed on the water sample bucket, and a through groove is formed inside the horizontal frame. The output hose passes through the through groove and extends into the water sample bucket. A suction head is fixedly connected to the end of the output hose, and a float plate is fixedly connected to the suction head. A filter head is connected to the lower end of the suction head, and a filter element is fixedly connected inside the filter head. A clamping ring is provided above the horizontal frame, and the clamping ring is clamped onto the output hose. Another output hose extends into the sample bucket.

[0006] Preferably, the sleeve clamp includes two sleeve segments, and a gasket is fixedly connected to the underside of each sleeve segment.

[0007] Preferably, the gasket has connecting ears fixed to both sides, and fixing bolts are provided inside the connecting ears.

[0008] Preferably, a first attracting magnet is embedded in the lower edge of the suction head, and a second attracting magnet is embedded in the upper edge of the filter head, the second attracting magnet and the first attracting magnet cooperating with each other.

[0009] Preferably, a limiting hole is provided at the lower edge of the suction head, and a limiting protrusion is fixedly connected to the upper edge of the filter head, with the limiting protrusion and the limiting hole cooperating with each other.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. By using a float plate, the suction head can be suspended above the solution. When extracting the solution, the sediment at the bottom of the water sample container can be disturbed as much as possible. As the solution inside the water sample container decreases, the sediment inside the water sample container should be closely monitored. When the suction head disturbs the sediment at the bottom of the water sample container, the machine can be stopped and the remaining solution can be manually transferred. This effectively avoids the problem of disturbing the sediment at the bottom of the water sample container due to lack of experience.

[0011] 2. By using the first and second magnets in combination, the filter head can be directly attached to the lower edge of the suction head using magnetic force. The use of magnetic attachment makes it easy to remove the filter head separately later to clean the impurities adhering to the filter element. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the sleeve clamp of this utility model; Figure 3 This is a schematic diagram of the suction head and filter head structure of this utility model; Figure 4 This is a schematic diagram of the cross frame structure of this utility model.

[0013] In the diagram: 1. Water sample container; 2. Sample container; 3. Pump; 301. Output hose; 4. Clamping ring; 401. Sleeve plate; 402. Gasket; 403. Connecting lug; 404. Fixing bolt; 5. Suction head; 501. Float; 502. First attracting magnet; 503. Limiting hole; 6. Filter head; 601. Filter element; 602. Limiting protrusion; 603. Second attracting magnet; 7. Horizontal frame; 701. Through groove. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: a water sample pretreatment filtration device for radiochemical analysis, including a water sample container 1, a sample container 2, and a pump 3. The pump 3 has an output hose 301 fixedly connected to both its input and output ends. A horizontal frame 7 is placed on the water sample container 1. A through groove 701 is opened in the horizontal frame 7. The output hose 301 passes through the through groove 701 and extends into the water sample container 1. A suction head 5 is fixedly connected to the end of the output hose 301. A float plate 501 is fixedly connected to the suction head 5. A filter head 6 is connected to the lower end of the suction head 5. A filter element 601 is fixedly connected inside the filter head 6. A clamping ring 4 is set above the horizontal frame 7. The clamping ring 4 is clamped on the output hose 301. Another output hose 301 extends into the sample container 2.

[0016] In this embodiment, the output hose 301 is clamped by a clamping ring 4, allowing the output hose 301 to pass smoothly through the through groove 701. Since the diameter of the clamping ring 4 is larger than the width of the through groove 701, the clamping ring 4 will be secured to the crossbar 7. The clamping ring 4 pulls the output hose 301, allowing the suction head 5 to suspend inside the water sample container 1. The float plate 501 allows the suction head 5 to float above the solution. When the pump 3 is started, the output hose 301 and suction head 5 work together to draw the solution from inside the water sample container 1 into the sample container 2. During the initial extraction, the suction head 5 floats... To minimize disturbance to the bottom sediment when the suction head 5 is drawing the solution, as the solution inside the water sample container 1 decreases, the suction head 5 will descend with the drop in liquid level. At this time, the suction speed needs to be controlled by the pump 3, and the sediment inside the water sample container 1 needs to be closely monitored. When the suction head 5 disturbs the sediment at the bottom of the water sample container 1, the pump can be stopped and the remaining solution can be manually transferred. This effectively avoids the problem of the sediment at the bottom of the water sample container 1 being disturbed due to lack of experience. The filter head 6 is installed at the lower edge of the suction head 5, and the filter element 601 can be used to filter impurities in the solution.

[0017] In order to achieve the purpose of clamping the sleeve ring 4 onto the output hose 301, the device adopts the following technical solution: the sleeve ring 4 includes two sleeve pieces 401, a gasket 402 is fixedly connected to the bottom of the sleeve piece 401, and connecting ears 403 are fixedly connected to both sides of the gasket 402. A fixing bolt 404 is provided in the connecting ear 403.

[0018] Two sleeve pieces 401 are attached to the output hose 301, and the two sleeve pieces 401 can be fixed together by using the fixing bolt 404 through the connecting ear 403. The two sleeve pieces 401 are then fixedly installed on the output hose 301, and the gasket 402 will form a disc that is locked onto the crossbar 7.

[0019] To achieve the purpose of fixing the filter head 6, the device adopts the following technical solution: a first attracting magnet 502 is embedded in the lower edge of the suction head 5, and a second attracting magnet 603 is embedded in the upper edge of the filter head 6. The second attracting magnet 603 and the first attracting magnet 502 cooperate with each other. A limiting hole 503 is opened in the lower edge of the suction head 5, and a limiting protrusion 602 is fixedly connected to the upper edge of the filter head 6. The limiting protrusion 602 and the limiting hole 503 cooperate with each other.

[0020] By using the interaction of the first attracting magnet 502 and the second attracting magnet 603, the filter head 6 can be directly attracted and installed at the lower edge of the suction head 5 using magnetic attraction. The use of magnetic attraction makes it easy to remove the filter head 6 separately later to clean the impurities adhering to the filter element 601. The limiting protrusion 602 and the limiting hole 503 cooperate to limit the installation position of the filter head 6 and avoid the problem of lateral misalignment of the filter head 6. At the same time, a sealing rubber ring is fixed to the lower edge of the suction head 5 to seal the connection between the filter head 6 and the suction head 5.

[0021] The working principle and usage process of this utility model are as follows: The crossbar 7 is placed on the upper edge of the water sample container 1, and the clamping ring 4 is clamped and fixedly installed on the output hose 301, keeping the clamping ring 4 at a suitable distance from the suction head 5. The float plate 501 can make the suction head 5 suspend above the solution. The pump 3 is started to draw the solution into the sample container 2, which can minimize the disturbance of the bottom sediment when the suction head 5 is drawing. As the solution inside the water sample container 1 decreases, the suction head 5 will descend with the drop in liquid level. At this time, the suction speed needs to be controlled by the pump 3, and the sediment inside the water sample container 1 needs to be closely monitored. When the suction head 5 disturbs the sediment at the bottom of the water sample container 1, the machine can be stopped to manually transfer the remaining solution, and the device can be rinsed with deionized water.

[0022] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water sample pretreatment filtration device for radiochemical analysis, comprising a water sample container (1), a sample container (2), and a pump (3), characterized in that: The pump (3) has an output hose (301) fixedly connected to both the input and output ends. A crossbeam (7) is placed on the water sample bucket (1). A through groove (701) is opened in the crossbeam (7). The output hose (301) passes through the through groove (701) and extends into the water sample bucket (1). A suction head (5) is fixedly connected to the end of the output hose (301). A float plate (501) is fixedly connected to the suction head (5). A filter head (6) is connected to the lower end of the suction head (5). A filter element (601) is fixedly connected inside the filter head (6). A clamping ring (4) is set above the crossbeam (7). The clamping ring (4) is clamped on the output hose (301). Another output hose (301) extends into the sample bucket (2).

2. The water sample pretreatment filtration device according to claim 1, characterized in that: The sleeve clamp (4) includes two sleeve pieces (401), and a gasket (402) is fixedly connected to the underside of the sleeve piece (401).

3. The water sample pretreatment filtration device according to claim 2, characterized in that: The gasket (402) is fixedly connected to both sides with connecting ears (403), and a fixing bolt (404) is provided in the connecting ears (403).

4. The water sample pretreatment filtration device according to claim 1, characterized in that: The suction head (5) is fitted with a first magnet (502) at its lower edge, and the filter head (6) is fitted with a second magnet (603) at its upper edge. The second magnet (603) and the first magnet (502) cooperate with each other.

5. The water sample pretreatment filtration device according to claim 1, characterized in that: The suction head (5) has a limiting hole (503) at its lower edge, and the filter head (6) has a limiting protrusion (602) fixedly attached to its upper edge. The limiting protrusion (602) and the limiting hole (503) cooperate with each other.

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