Liquid sample sampler
By designing a liquid sample sampler, using self-sealing joint assembly and spherical valves or check valves, rapid, simple and pollution-free liquid sample sampling in the semiconductor industry is achieved, solving the problem of sample moisture detection.
Patent Information
- Application Number
- CN202420887710.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-04-26
AI Technical Summary
In the semiconductor industry, it is difficult to accurately obtain moisture detection of high-purity wet chemicals, and moisture pollution and water absorption are prone to occur during the sampling process, resulting in the sample moisture exceeding the standard. The existing technology requires a strict sampling environment and fast speed, but it is difficult to achieve .
A liquid sample sampler is designed, including a sampling tank and a self-sealing joint assembly. Through the plug-in of the active joint and the fixed joint, a ball valve or a one-way valve is used as a self-sealing mechanism to ensure that the sample is in a closed environment during the sampling process and avoid Pollution and water absorption.
Fast and simple liquid sample sampling is achieved, ensuring that the sample is sampled in a closed environment, avoiding sample contamination and water absorption, and is suitable for sampling in complex environments.
Smart Images
Figure CN222529004U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid samplers, in particular to a liquid sampler. Background Art
[0002] China's semiconductor industry has begun to rise. The semiconductor industry needs to use a variety of high-purity wet chemicals and the quality requirements for high-purity wet chemicals have also increased significantly, and the requirements for moisture are becoming more and more stringent. In many cases, the true value of sample moisture is not easy to obtain, especially for samples that are sensitive to moisture (such as NMP THF IPA, etc.).
[0003] In the sampling process, it is easy for the sampling ports to be contaminated with water. The samples taken are not the products in the circulation pipeline (or the dead volume is too much). The sampling is not sealed, resulting in water absorption of the sample. During the detection process, the sample is overly exposed to the outside, causing the sample to absorb water. As a result, it is difficult to determine which link the sample has excessive moisture. In addition, in the prior art, the understanding of sampling is that the sampling environment must be carried out in an environment with a dew point. The dew point is generally recommended to be less than -40°C, and 1-2 empty sample bottles are placed with the lids opened as blank tests. This method has stricter requirements on the environment and personnel, and requires the sampling speed to be as fast as possible to reduce the influence of other factors. The faster the sampling speed, the better is also an unquantifiable judgment. Utility Model Content
[0004] The utility model aims to provide a liquid sample sampler, which has fast sampling and simple operation. The sample is in a closed environment during the sampling process. The device is simple, suitable for more complex environments and avoids contamination of the sample and water absorption of the sample.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] The utility model provides a liquid sample sampler, comprising: a sampling tank and a self-sealing joint assembly, the self-sealing joint assembly comprising a fixed joint for connecting to a sampling point on a liquid pipeline to be sampled and an active joint for plugging with the fixed joint, the active joint being arranged on the sampling tank, a first self-sealing mechanism for controlling the active joint to be connected to or closed with the sampling tank being arranged in the active joint, a second self-sealing mechanism for controlling the fixed joint to be connected to or closed with the liquid pipeline to be sampled being arranged in the fixed joint, and a sampling port being arranged on the sampling tank.
[0007] Furthermore, the first self-sealing mechanism and the second self-sealing mechanism are spherical valves.
[0008] Furthermore, the first self-sealing mechanism and the second self-sealing mechanism are one-way valves.
[0009] Furthermore, two fixed joints are provided, wherein one fixed joint is provided at an upstream sampling point of the pipeline to be sampled, and one fixed joint is provided at a downstream sampling point of the pipeline to be sampled;
[0010] Correspondingly, two active joints are also provided, wherein one active joint is plugged into a fixed joint provided at an upstream sampling point of the pipeline to be sampled, and one active joint is plugged into a fixed joint provided at a downstream sampling point of the pipeline to be sampled; wherein the two active joints are respectively provided at both ends of the sampling tank.
[0011] Furthermore, an externally threaded welded ball valve is provided at the sampling port.
[0012] Furthermore, the hole diameter on the external thread type welded ball valve is Ф8-18mm.
[0013] Furthermore, the sampling tank is a passivated stainless steel sampling tank, and the self-sealing joint assembly is a passivated stainless steel self-sealing joint assembly.
[0014] Furthermore, the volume of the sampling tank is 20ml-200ml.
[0015] Compared with the prior art, the utility model has the following beneficial effects: fast sampling and simple operation, the sample is in a closed environment during the sampling process, the device is simple, suitable for more complex environments and avoids sample contamination and sample water absorption.
[0016] The liquid sample sampler provided by the utility model ensures that the sample is in a sealed environment during the sampling process through the self-sealing joint assembly, and completes the sampling of the sample in a closed environment by plugging the active joint and the fixed joint. After the sampling is completed, the sample in the sampling tank is in a sealed environment through the first self-sealing mechanism arranged in the active joint to prevent the sample from being contaminated. By opening a separate sampling port, the sample is taken out through the special sampling port during sampling, and will not pass through the active joint as the original liquid inlet, thereby preventing the active joint from causing contamination to the sample, and is suitable for sampling in complex environments;
[0017] By setting a spherical valve as the first self-sealing mechanism and the second self-sealing mechanism or setting a one-way valve as the first self-sealing mechanism and the second self-sealing mechanism, the operation is simple, and the sample can be quickly sampled while always being in a sealed environment to avoid contamination caused by contact with the outside world;
[0018] By setting two active joints, the sample can flow in from one active joint on the sampling tank and flow out from another active joint, ensuring that the sample in the sampling tank is the latest sample when sampling is completed;
[0019] By arranging an external threaded welded ball valve at the sampling port, it is convenient to seal the sample and take the sample out of the sampling port to avoid contamination. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A schematic diagram of the structure of a liquid sample sampler provided in Example 3 of the utility model;
[0021] Figure 2 A schematic diagram of the structure of a liquid sample sampler provided in Example 4 of the utility model;
[0022] Figure 3 This is a schematic diagram of the structure of a liquid sample sampler provided in Example 5 of the utility model.
[0023] The markings in the attached figure are: 1. sampling tank; 2. active joint; 3. fixed joint; 4. sampling port. DETAILED DESCRIPTION
[0024] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.
[0025] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.
[0026] Embodiment 1:
[0027] The present embodiment provides a liquid sample sampler, comprising: a sampling tank 1 and a self-sealing joint assembly, the self-sealing joint assembly comprising a fixed joint 3 for connecting to a sampling point on a liquid pipeline to be sampled and an active joint 2 for plugging with the fixed joint 3, the active joint 2 being arranged on the sampling tank 1, the active joint 2 being provided with a first self-sealing mechanism for controlling the active joint 2 to be connected or closed with the sampling tank 1, the fixed joint 3 being provided with a second self-sealing mechanism for controlling the fixed joint 3 to be connected or closed with the liquid pipeline to be sampled, the sampling tank 1 being provided with a sampling port 4, the sampling is fast and the operation is simple, and the sample is in a closed environment during the sampling process, The device is simple, suitable for more complex environments and can prevent samples from being contaminated and absorbing water. The self-sealing joint component ensures that the sample is in a sealed environment during the sampling process. The active joint 2 and the fixed joint 3 are connected to complete the sampling in a closed environment. Through the first self-sealing mechanism set in the active joint 2, the sample in the sampling tank 1 is in a sealed environment after the sampling is completed to prevent the sample from being contaminated. By opening a separate sampling port 4, the sample is taken out through the special sampling port 4 during sampling, and will not pass through the active joint 2 as the original liquid inlet, thereby avoiding contamination of the sample by the active joint 2. The device is suitable for sampling in complex environments.
[0028] In this embodiment, the first self-sealing mechanism and the second self-sealing mechanism are ball valves. When the active joint 2 is plugged into the fixed joint 3, the handle on the ball valve is turned to control the ball valves in the active joint 2 and the fixed joint 3 to open for sampling. After the sampling is completed, the handle on the ball valve is turned to control the ball valves in the active joint 2 and the fixed joint 3 to close. By setting the ball valve as the first self-sealing mechanism and the second self-sealing mechanism, the operation is simple, and sampling can be done quickly while keeping the sample in a sealed environment at all times to avoid contamination caused by contact with the outside world.
[0029] In this embodiment, an externally threaded welded ball valve is provided at the sampling port 4. By providing an externally threaded welded ball valve at the sampling port 4, the aperture of the externally threaded welded ball valve is Ф8-18mm, which facilitates the sealing of the sample and the removal of the sample from the sampling port 4 to avoid contamination.
[0030] In this embodiment, the sampling tank 1 and the self-sealing joint assembly are made of passivated stainless steel to prevent the sampling tank 1 from contaminating the sample and extend the service life.
[0031] In this embodiment, the volume of the sampling tank 1 is 20ml-200ml.
[0032] When using the device, first install the fixed joint 3 at the sampling point on the liquid pipeline to be sampled, plug the active joint 2 on the sampling tank 1 with the fixed joint 3, turn the handle of the ball valve, control the active joint 2 and the ball valve in the fixed joint 3 to open, then the liquid flows from the liquid pipeline to be sampled through the fixed joint 3 and the active joint 2 and then flows into the sampling tank 1, after the sampling is completed, turn the handle of the ball valve, control the active joint 2 and the ball valve in the fixed joint 3 to close, then unplug the active joint 2, so that the active joint 2 is separated from the fixed joint 3, when it is necessary to perform experiments or detection operations on the sample in the sampling tank 1, by controlling the external threaded welded ball valve to open, the sample can be taken out from the sampling port 4 with a needle tube to operate on the sample.
[0033] Embodiment 2:
[0034] The present embodiment provides a liquid sample sampler. Different from the embodiment 1, in the present embodiment, the first self-sealing mechanism and the second self-sealing mechanism are one-way valves. When the active joint 2 is plugged into the fixed joint 3, the one-way valves in the active joint 2 and the fixed joint 3 are opened for sampling. After the sampling is completed, when the active joint 2 and the fixed joint 3 are separated, the one-way valves are automatically closed. By setting the one-way valves as the first self-sealing mechanism and the second self-sealing mechanism, the operation is simple, and the sample can be quickly sampled while always being in a sealed environment to avoid contamination caused by contact with the outside world.
[0035] When using the device, first install the fixed joint 3 at the sampling point on the liquid pipeline to be sampled, and plug the active joint 2 on the sampling tank 1 into the fixed joint 3. At this time, the one-way valves in the active joint 2 and the fixed joint 3 are in an open state. The liquid flows from the liquid pipeline to be sampled through the fixed joint 3 and the active joint 2 and then flows into the sampling tank 1. After sampling, the active joint 2 is unplugged to separate the active joint 2 from the fixed joint 3. At this time, the one-way valves in the active joint 2 and the fixed joint 3 are automatically closed. When it is necessary to perform experiments or detection operations on the sample in the sampling tank 1, the sample can be taken out from the sampling port 4 with a needle by controlling the external threaded welded ball valve to open, and the sample can be operated on.
[0036] Embodiment 3:
[0037] This embodiment provides a liquid sampler, which is different from the embodiment 1 in that Figure 1 As shown, in this embodiment, two fixed joints 3 are provided, wherein one fixed joint 3 is provided at the upstream sampling point of the pipeline to be sampled, and one fixed joint 3 is provided at the downstream sampling point of the pipeline to be sampled; correspondingly, two active joints 2 are also provided, wherein one active joint 2 is plugged with the fixed joint 3 provided at the upstream sampling point of the pipeline to be sampled, and one active joint 2 is plugged with the fixed joint 3 provided at the downstream sampling point of the pipeline to be sampled, wherein the two active joints 2 are respectively provided at both ends of the sampling tank 1. In this embodiment, the first self-sealing mechanism and the second self-sealing mechanism are both one-way valves. When the active joints 2 are 2 is plugged into the fixed joint 3, the one-way valves in the active joint 2 and the fixed joint 3 are opened for sampling. After the sampling is completed, when the active joint 2 and the fixed joint 3 are separated, the one-way valve is automatically closed. By setting the one-way valve as the first self-sealing mechanism and the second self-sealing mechanism, the operation is simple, and the sample can be quickly sampled while always being in a sealed environment to avoid contamination caused by contact with the outside world. By setting two active joints 2, the sample can flow in from one active joint 2 on the sampling tank 1 and flow out from the other active joint 2, ensuring that the sample in the sampling tank 1 is the latest sample when the sampling is completed.
[0038] When using the device, first install the two fixed joints 3 at the upstream sampling point and the downstream sampling point of the liquid pipeline to be sampled, respectively, and plug the two active joints 2 on the sampling tank 1 with the fixed joints 3 respectively. At this time, the one-way valves in the active joints 2 and the fixed joints 3 are in an open state. The liquid flows from the liquid pipeline to be sampled through the fixed joints 3 and the active joints 2 at the upstream sampling point and then flows into the sampling tank 1. Then, the liquid flows from the sampling tank 1 through the active joints 2 and the fixed joints 3 at the downstream sampling point and then flows back into the liquid pipeline to be sampled. At this time, the liquid in the sampling tank 1 is constantly reset. When the sampling is completed, the active joint 2 is unplugged to disengage the active joint 2 from the fixed joint 3. At this time, the one-way valves in the active joints 2 and the fixed joints 3 are automatically closed. When it is necessary to perform experiments or detection operations on the sample in the sampling tank 1, the sample can be taken out from the sampling port 4 with a needle by controlling the external threaded welded ball valve to open, and the sample can be operated on.
[0039] Embodiment 4:
[0040] This embodiment provides a liquid sampler, which is different from the embodiment 1 in that Figure 2 As shown, in this embodiment, two fixed joints 3 are provided, wherein one fixed joint 3 is provided at the upstream sampling point of the pipeline to be sampled, and one fixed joint 3 is provided at the downstream sampling point of the pipeline to be sampled; correspondingly, two active joints 2 are also provided, wherein one active joint 2 is plugged with the fixed joint 3 provided at the upstream sampling point of the pipeline to be sampled, and one active joint 2 is plugged with the fixed joint 3 provided at the downstream sampling point of the pipeline to be sampled, wherein the two active joints 2 are respectively provided at both ends of the sampling tank 1. In this embodiment, the first self-sealing mechanism and the second self-sealing mechanism are both spherical valves. When the active joint 2 is connected with the fixed joint 3, When plugging in, turn the handle of the ball valve to control the active joint 2 and the ball valve in the fixed joint 3 to open for sampling. After the sampling is completed, turn the handle of the ball valve to control the active joint 2 and the ball valve in the fixed joint 3 to close. By setting the ball valve as the first self-sealing mechanism and the second self-sealing mechanism, the operation is simple, and the sample can be quickly sampled while always being in a sealed environment to avoid contamination caused by contact with the outside world. By setting two active joints 2, the sample can flow in from one active joint 2 on the sampling tank 1 and flow out from the other active joint 2, ensuring that the sample in the sampling tank 1 is the latest sample when the sampling is completed.
[0041] Embodiment 5:
[0042] This embodiment provides a liquid sampler, which is different from the embodiment 1 in that Figure 3As shown, in this embodiment, two fixed joints 3 are provided, wherein one fixed joint 3 is provided at the upstream sampling point of the pipeline to be sampled, and one fixed joint 3 is provided at the downstream sampling point of the pipeline to be sampled; correspondingly, two active joints 2 are also provided, wherein one active joint 2 is plugged with the fixed joint 3 provided at the upstream sampling point of the pipeline to be sampled, and one active joint 2 is plugged with the fixed joint 3 provided at the downstream sampling point of the pipeline to be sampled, wherein the two active joints 2 are respectively provided at both ends of the sampling tank 1. In this embodiment, one active joint 2 and the first self-sealing mechanism and the second self-sealing mechanism in the fixed joint 3 plugged therewith are one-way valves. When the active joint 2 is plugged with the fixed joint 3, the active joint 2 and the fixed joint 3 are The one-way valve in the head 3 is opened for sampling. After the sampling is completed, when the active joint 2 and the fixed joint 3 are separated, the one-way valve is automatically closed. The first self-sealing mechanism and the second self-sealing mechanism in the other active joint 2 and the fixed joint 3 plugged therewith are spherical valves. When the active joint 2 is plugged with the fixed joint 3, the handle of the spherical valve is turned to control the active joint 2 and the spherical valve in the fixed joint 3 to open for sampling. After the sampling is completed, the handle of the spherical valve is turned to control the active joint 2 and the spherical valve in the fixed joint 3 to close. By setting two active joints 2, the sample can flow in from one active joint 2 on the sampling tank 1 and flow out from the other active joint 2, ensuring that the sample in the sampling tank 1 is the latest sample when the sampling is completed.
[0043] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.
Claims
1. A liquid sampler, characterized in that: include: A sampling tank (1) and a self-sealing joint assembly, the self-sealing joint assembly comprising a fixed joint (3) for connecting to a sampling point on a liquid pipeline to be sampled and an active joint (2) for plugging into the fixed joint (3), the active joint (2) being arranged on the sampling tank (1), the active joint (2) being provided with a first self-sealing mechanism for controlling the active joint (2) to be connected to or closed with the sampling tank (1), the fixed joint (3) being provided with a second self-sealing mechanism for controlling the fixed joint (3) to be connected to or closed with the liquid pipeline to be sampled, and a sampling port (4) being provided on the sampling tank (1).
2. The liquid sampler according to claim 1, characterized in that: The first self-sealing mechanism and the second self-sealing mechanism are spherical valves.
3. The liquid sampler according to claim 1, characterized in that: The first self-sealing mechanism and the second self-sealing mechanism are one-way valves.
4. The liquid sampler according to claim 1, characterized in that: Two fixed joints (3) are provided, wherein one fixed joint (3) is provided at an upstream sampling point of the pipeline to be sampled, and one fixed joint (3) is provided at a downstream sampling point of the pipeline to be sampled; Correspondingly, two active joints (2) are also provided, wherein one active joint (2) is plugged into a fixed joint (3) provided at an upstream sampling point of the pipeline to be sampled, and one active joint (2) is plugged into a fixed joint (3) provided at a downstream sampling point of the pipeline to be sampled; Wherein, two active joints (2) are respectively arranged at two ends of the sampling tank (1).
5. The liquid sampler according to claim 1, characterized in that: An externally threaded welded ball valve is provided at the sampling port (4).
6. The liquid sampler according to claim 5, characterized in that: The hole diameter of the external thread type welded ball valve is Φ8-18mm.
7. The liquid sampler according to claim 5, characterized in that: The sampling tank (1) is a passivated stainless steel sampling tank (1), and the self-sealing joint assembly is a passivated stainless steel self-sealing joint assembly.
8. The liquid sampler according to claim 1, characterized in that: The volume of the sampling tank (1) is 20ml-200ml.