Sampling tube capable of being adjusted along with liquid level, sampling device, reaction device and storage device

Abstract

The utility model discloses a sampling pipe capable of being adjusted along with a liquid level, a sampling device, a reaction device and a storage device. The sampling pipe comprises a connecting pipe, a movable pipe and a buoyancy component, wherein the movable pipe is telescopically connected with the connecting pipe in an inserted manner; the buoyancy component is matched with the liquid level and drives the movable pipe to axially move on the connecting pipe along with the change of the liquid level; and a sealing piece is arranged between the movable pipe and the connecting pipe. According to the scheme, the sampling position can be automatically adjusted according to the liquid level height, accurate sampling from a target liquid layer is ensured, and sampling errors caused by liquid level changes or liquid layering are avoided.

Description

Technical Field

[0001] The utility model relates to a sampling device, specifically an adjustable sampling tube according to the liquid level, a sampling device, a reaction device and a storage device. Background Art

[0002] During the liquid storage and processing, regular sampling of the liquid is an important part of quality control and process optimization. Traditional sampling devices are usually fixed at a certain liquid level height and cannot automatically adjust the sampling position according to the rise or fall of the liquid level. When the liquid level changes, it may not be possible to accurately obtain a sample of the upper liquid level, resulting in inaccurate sampling results and unable to truly reflect the properties of the liquid. In addition, some liquids may have a layering phenomenon, and the composition and properties of the upper layer and the lower layer may be different. Therefore, sampling from the upper liquid level is of great significance. Content of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an adjustable sampling tube according to the liquid level, a sampling device, a reaction device and a storage device, which can automatically adjust the sampling position according to the liquid level height, ensure accurate sampling from the target liquid layer, and avoid sampling errors caused by liquid level changes or liquid layering.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] An adjustable sampling tube according to the liquid level includes a connecting tube, a movable tube telescopically inserted into the connecting tube, and a buoyancy component installed on the movable tube;

[0006] The buoyancy component cooperates with the liquid level and drives the movable tube to axially move on the connecting tube as the liquid level changes;

[0007] A seal is provided between the movable tube and the connecting tube.

[0008] As a further improvement of the utility model, the movable tube is inserted into the connecting tube, and a seal is provided between the outer wall of the movable tube and the inner wall of the connecting tube.

[0009] As a further improvement of the utility model, the seal is installed on the outer wall of the movable tube and moves as the movable tube axially moves.

[0010] As a further improvement of the utility model, the seal is installed at the end of the connecting tube corresponding to the liquid level and has a through hole for the movable tube to insert. The movable tube is inserted into the through hole, and the outer wall abuts against the seal to form a seal.

[0011] As a further improvement of the utility model, the buoyancy component is connected to the movable tube by a rigid rod or a flexible rope or adhesively connected or bolted or clamped.

[0012] As a further improvement of the present utility model, the gravity of the buoyancy component or the movable pipe is greater than the moving resistance generated by the seal on the movable pipe.

[0013] As a further improvement of the present utility model, the buoyancy component is a floating ball, and the combined gravity of the floating ball and the movable pipe is greater than the moving resistance generated by the seal on the movable pipe.

[0014] A sampling device includes an extraction component and a sampling pipe adjustable with the liquid level as described in any of the above improvement solutions. The extraction component is connected to a connecting pipe and extracts liquid through the connecting pipe and the movable pipe.

[0015] A reaction device includes a reaction vessel and a sampling device provided on the reaction vessel. The sampling device adopts the sampling device as described above.

[0016] A storage device includes a storage container and a sampling device provided on the storage container. The sampling device adopts the sampling device as described above.

[0017] The beneficial effects of the present utility model are as follows: Through the linkage design of the buoyancy component and the movable pipe, the sampling pipe can automatically expand and contract with the liquid level height, and always keep the sampling port located in the preset liquid layer (such as the upper liquid level), effectively solving the problem of inaccurate sampling caused by liquid level fluctuations or liquid stratification of traditional fixed sampling pipes. The setting of the seal further ensures the sealing performance between the movable pipe and the connecting pipe. This sealing performance can provide the necessary airtight effect for liquid extraction, avoiding the influence of negative pressure leakage on the extraction effect. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is Figure 1 the enlarged view of part A in

[0020] Figure 3 It is a schematic diagram of an implementation manner of the present utility model (the seal adopts an O-ring);

[0021] Figure 4 It is a schematic diagram of an implementation manner of the present utility model (the seal adopts a sealing ring and is clamped with the movable pipe);

[0022] Figure 5 It is a schematic diagram of the connection of the buoyancy component of the present utility model using a rigid rod;

[0023] Figure 6 It is a schematic diagram of the connection of the buoyancy component of the present utility model using a flexible rope;

[0024] Figure 7Schematic diagram of the buoyancy component of the present utility model using bolt connection;

[0025] Figure 8 Schematic diagram of the buoyancy component of the present utility model using snap connection.

[0026] Reference numerals in the attached drawings: 1, connecting pipe; 2, movable pipe; 3, buoyancy component; 4, seal; 5, rigid rod; 6, flexible rope; 7, bolt. Detailed implementation manners

[0027] The following will further elaborate on the present utility model in combination with the embodiments given in the attached drawings.

[0028] Referring to Figure 1-8 as shown,

[0029] A liquid-level adjustable sampling pipe includes a connecting pipe 1, a movable pipe 2 that is telescopically inserted into the connecting pipe 1, and a buoyancy component 3 installed on the movable pipe 2;

[0030] The buoyancy component 3 cooperates with the liquid level and drives the movable pipe 2 to axially move on the connecting pipe 1 as the liquid level changes;

[0031] A seal 4 is provided between the movable pipe 2 and the connecting pipe 1.

[0032] With this solution, when the liquid level rises, the buoyancy component 3 floats under the action of buoyancy, driving the movable pipe 2 to move axially upward along the connecting pipe 1 (it should be noted that this upward movement is not specifically a completely vertical movement and can have a certain deviation angle, but the smooth movement of the movable pipe 2 needs to be maintained), so that the sampling port is lifted synchronously and can adapt to the change of the liquid level; when the liquid level drops, the buoyancy component 3 moves downward due to gravity (in a preferred solution, the gravity downward movement solution is adopted, and in actual use, it can also be combined in other ways, which will be elaborated in detail later), and the movable pipe 2 moves downward accordingly. The seal 4 (such as an O-ring) always fits against the outer wall of the movable pipe 2 or the inner wall of the connecting pipe 1 (it can be changed according to different insertion methods. For example, if the movable pipe 2 is inserted by sleeving on the connecting pipe 1, the seal 4 is located between the inner wall of the movable pipe 2 and the outer wall of the connecting pipe 1), ensuring that the airtightness during the telescopic process can meet the requirements of liquid extraction. This design realizes the automatic adjustment of the sampling pipe with the liquid level, ensures that the sampling position is constant, and is especially suitable for scenarios where the liquid level in storage containers and reaction devices changes frequently.

[0033] When the liquid level drops as mentioned above, the downward movement of the movable pipe 2 can also be implemented by installing a one-way valve in the movable pipe 2. This one-way valve only allows liquid to be pumped upward. At this time, each time liquid needs to be pumped, pressure can be applied to the connecting pipe 1 and the movable pipe 2 first (by inflating or adding liquid), which can make the movable pipe 2 extend, and then it can be automatically adjusted by the buoyancy component 3 to make the movable pipe 2 return to the height where liquid needs to be pumped.

[0034] Of course, other mechanical structures can also be used for implementation, and this solution is preferably a gravity solution.

[0035] In a further setting, the movable tube 2 is inserted into the connecting tube 1, and a seal 4 is provided between the outer wall of the movable tube 2 and the inner wall of the connecting tube 1.

[0036] When the movable tube 2 slides along the inner wall of the connecting tube 1, the seal 4 is in close contact with the inner wall through elastic deformation, allowing the movable tube 2 to freely expand and contract while preventing liquid from leaking through the gap. This structure simplifies the requirement for the matching accuracy between the movable tube 2 and the connecting tube 1, reduces the manufacturing cost, and improves the sealing reliability at the same time.

[0037] The inner wall of the connecting tube 1 can also provide a guiding function for the movable tube 2, making the movement of the movable tube 2 more stable.

[0038] Preferably, the seal 4 is installed on the outer wall of the movable tube 2 and moves along with the axial movement of the movable tube 2. When the movable tube 2 expands and contracts, the seal 4 moves with it and always covers the gap between the movable tube 2 and the connecting tube 1 to maintain better sealing. In an alternative solution, the outer wall of the movable tube 2 can have a groove for the seal 4 to be snap-fitted, so that the seal 4 and the movable tube 2 maintain more stable axial synchronous movement.

[0039] In another embodiment, the seal 4 is installed at the end of the connecting tube 1 corresponding to the liquid level and has a through hole for the movable tube 2 to be inserted. The movable tube 2 is inserted into the through hole, and its outer wall abuts against the seal 4 to form a seal.

[0040] The seal 4 is pressed against the outer wall of the movable tube 2 through elastic deformation to form a static seal (interference fit can be used). This design has a simple structure, stable sealing pressure, and is easy to install. Combining with the solution that the movable tube 2 is inserted into the connecting tube 1 in the foregoing solution, it has a more convenient installation effect. In this solution, the seal 4 can be a sealing plug, and the connection method between the sealing plug and the end of the connecting tube 1 is simple. Only need to insert the sealing plug into the end of the connecting tube 1, and even if aging affects the sealing effect, it can be easily replaced.

[0041] As an alternative solution for the installation between the buoyancy component 3 and the movable tube 2, the buoyancy component 3 and the movable tube 2 are connected by a rigid rod 5 or a flexible rope 6 or adhesively connected or bolted 7 or snap-fitted.

[0042] A rigid connection (using a rigid rod 5 or clamping or bolt 7 for fixed connection or adhesive connection) ensures the high efficiency of buoyancy transmission. The displacement of the floating ball is strictly synchronized with the telescopic amount of the movable tube 2, and it is applicable to occasions with high requirements for sampling accuracy (such as real-time monitoring of chemical reactions). If a flexible rope 6 is used for connection, it can adapt to the inclined or irregular fluctuation of the liquid level and reduce the risk of jamming.

[0043] In the above solution, the floating component may also have a through hole, which can be inserted into the end of the movable tube 2 corresponding to the liquid level. At the same time, an extension part for extending into the liquid level can extend from the end of the through hole of the floating component, which can be used to extract liquid.

[0044] Specifically, the gravity of the buoyancy component 3 or the movable tube 2 is greater than the moving resistance generated by the seal 4 on the movable tube 2. In the application of this solution, the buoyancy component 3 can cooperate with the rise of the liquid level to make the movable tube 2 move upward. The gravitational forces of the buoyancy component 3 and the movable tube 2 can overcome the moving resistance brought by the seal 4. As the liquid level drops, it can also overcome the moving resistance brought by the seal 4, enabling the movable rod to descend.

[0045] In this solution, it is obvious to those skilled in the art that the buoyancy of the buoyancy component 3 is greater than the sum of the gravity of the buoyancy component 3, the gravity of the movable tube 2, and the moving resistance brought by the seal 4.

[0046] Preferably, the buoyancy component 3 is a floating ball, and the combined gravity of the floating ball and the movable tube 2 is greater than the moving resistance generated by the seal 4 on the movable tube 2.

[0047] The solution using a floating ball can increase the buoyancy as much as possible and at the same time help increase the gravity, making the cooperation between the movable tube 2 and the liquid level more synchronous and accurate.

[0048] The above-introduced is a sampling tube adjustable with the liquid level. As an application, it can be applied in the following solutions:

[0049] 1. A sampling device, including an extraction component and the above-described sampling tube adjustable with the liquid level. The extraction component is connected to the connecting tube 1 and extracts liquid through the connecting tube 1 and the movable tube 2. Among them, the extraction device can use a peristaltic pump or a vacuum pump or other devices capable of extraction.

[0050] 2. A reaction device, including a reaction vessel and a sampling device arranged on the reaction vessel. The sampling device uses the aforementioned sampling device.

[0051] 3. A storage device, including a storage container and a sampling device arranged on the storage container. The sampling device uses the aforementioned sampling device.

[0052] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. An adjustable sampling tube according to the liquid level, characterized in that, It includes a connecting pipe, a movable pipe that is telescopically inserted into the connecting pipe, and a buoyancy component installed on the movable pipe; The buoyancy component cooperates with the liquid level and drives the movable pipe to axially move on the connecting pipe as the liquid level changes; A seal is provided between the movable pipe and the connecting pipe.

2. The adjustable sampling tube according to claim 1, wherein The movable pipe is inserted into the connecting pipe, and a seal is provided between the outer wall of the movable pipe and the inner wall of the connecting pipe.

3. The adjustable sampling tube according to claim 2, wherein The seal is installed on the outer wall of the movable pipe and moves as the movable pipe axially moves.

4. The adjustable sampling tube according to claim 2, characterized in that, The seal is installed at the end of the connecting pipe corresponding to the liquid level and has a through hole for the movable pipe to be inserted. The movable pipe is inserted into the through hole, and its outer wall abuts against the seal to form a seal.

5. The liquid level adjustable sampling tube according to claim 1 or 2 or 3 or 4, characterized in that The buoyancy component and the movable pipe are connected by a rigid rod, a flexible rope, adhesive bonding, bolt fixed connection, clamping, or interference fit.

6. The adjustable sampling tube according to claim 1 or 2 or 3 or 4, characterized in that The gravity of the buoyancy component or the movable pipe is greater than the moving resistance generated by the seal on the movable pipe.

7. The adjustable sampling tube according to claim 1 or 2 or 3 or 4, characterized in that, The buoyancy component is a floating ball, and the combined gravity of the floating ball and the movable pipe is greater than the moving resistance generated by the seal on the movable pipe.

8. A sampling device, characterized in that, It includes an extraction component and a sampling pipe adjustable with the liquid level as described in any one of claims 1 to 7. The extraction component is connected to the connecting pipe and extracts liquid through the connecting pipe and the movable pipe.

9. A reaction device, characterized in that, It includes a reaction container and a sampling device provided on the reaction container. The sampling device uses the sampling device as described in claim 8.

10. A storage device, characterized in that, It includes a storage container and a sampling device provided on the storage container. The sampling device uses the sampling device as described in claim 8.

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