A device for protecting a sample and an environment
Patent Information
- Application Number
- CN202522153744.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-11
AI Technical Summary
针对现有技术的不足，本实用新型提供了一种保护样品和环境的装置，解决工作人员对易挥发有毒液体样品取样时，常面临泄漏相关风险，取样过程中样品易挥发产生有毒气体，既会导致样品量减少、造成后续实验检测延误及样品损耗，工作人员近距离接触还易吸入有毒气体，长期损害呼吸系统、影响身体健康的技术问题
本新型中，通过设有带密封开关门的取样舱室、内置丝杆升降机构的升降底座，以及上方带密封胶圈的样品存放管，再配合类似注射器针头形状的取样口，可在取样时实现样品存放管与取样口的密封对接，取样口能刺破样品存放管上的密封胶圈形成可靠密封，有效避免取样过程中样品泄漏或挥发，既保障取样操作的密封性，减少样品损耗，又能降低样品对取样环境的污染，进一步强化装置对样品和环境的双重保护作用。
Smart Images
Figure CN224802731U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protective device technology, and in particular to a device for protecting samples and the environment. Background Technology
[0002] When our staff collect samples of volatile toxic liquids, they often face the risk of leakage, which causes many problems in daily work. During the operation, these volatile gases not only gradually reduce the sample volume, resulting in insufficient samples for subsequent experiments or tests, causing sample loss and work delays; more importantly, we can easily inhale these toxic gases when in close contact, which can damage the respiratory system and affect health in the long run. When connecting the sample storage container to the sampling port, if a reliable seal cannot be achieved, the liquid sample will leak from the joint. If the leaked toxic liquid splashes onto our hands or skin during operation, it can easily cause burns, and injuries can occur if we are not careful. Utility Model Content
[0003] Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a device for protecting samples and the environment. It solves the technical problems that workers often face leakage risks when sampling volatile and toxic liquid samples, and that the samples are prone to volatilization and the generation of toxic gases during the sampling process. This not only leads to a reduction in sample volume, delays in subsequent experimental testing, and sample loss, but also causes workers to easily inhale toxic gases when in close contact, which can damage the respiratory system and affect their health in the long term.
[0004] Technical solution
[0005] To achieve the above objectives, this utility model provides the following technical solution: A device for protecting samples and the environment includes a sample protection housing, a sample storage container fixedly installed inside the sample protection housing, an observation port on the sample storage container, a feed inlet at the top of the sample protection housing, a sampling port at the bottom of the sample storage container, and a sealing sampling mechanism at the bottom of the sample protection housing. The sealing sampling mechanism can prevent sample leakage when filling liquid samples and can complete the sampling operation, preventing sample volatilization and leakage during the sampling process.
[0006] Preferably, the sealed sampling mechanism includes an annular cooling plate, the sample storage tank is made of polytetrafluoroethylene (PTFE), the sample protection device housing has a cooling mechanism inside, the annular cooling plate is connected to the cooling mechanism inside the sample protection device housing, the annular cooling plate is fixedly installed on the outside of the sample storage tank, a pressure detection valve is provided above the sample storage tank, the pressure detection valve is fixedly installed on the circumferential surface of the inlet, a pressure detection device is provided inside the pressure detection valve, a pressure gauge is provided on the pressure detection valve, and an air shut-off valve is provided above the pressure detection valve. A sampling chamber is fixedly installed below the outer shell. The sampling chamber is equipped with a sealed switch door. A lifting base is fixedly installed inside the sampling chamber. A sampling tube fixing base is fixedly installed on the upper end of the lifting base. A sample storage tube is provided above the sampling tube fixing base. A sealing rubber ring is provided above the sample storage tube. A sampling valve is provided on the sampling port. A pressure pump is provided inside the sampling valve. The sampling valve is connected to the bottom of the sample storage tank. A negative pressure air intake is provided inside the sampling chamber. A negative pressure fan is provided inside the negative pressure air intake. A gas exhaust port is provided on the negative pressure air intake.
[0007] The beneficial effects of the technical solutions provided in this application include at least the following: In this new invention, a sampling chamber with a sealed switch door, a lifting base with a built-in screw lifting mechanism, and a sample storage tube with a sealing rubber ring on top, combined with a sampling port shaped like a syringe needle, can achieve a sealed connection between the sample storage tube and the sampling port during sampling. The sampling port can pierce the sealing rubber ring on the sample storage tube to form a reliable seal, effectively preventing sample leakage or volatilization during sampling. This not only ensures the sealing of the sampling operation and reduces sample loss, but also reduces sample pollution to the sampling environment, further strengthening the device's dual protection of samples and the environment. Attached Figure Description
[0008] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0009] Figure 1 This is a structural diagram of the entire utility model; Figure 2 This is a structural diagram of the sample storage container of this utility model; Figure 3 This is a structural diagram of the sampling chamber of this utility model; Figure 4 This is a structural diagram of the sample storage tube of this utility model; Figure 5 This is a structural diagram of the negative pressure air intake port of this utility model.
[0010] Legend: 1. Sample protection device housing; 2. Sample storage tank; 3. Sampling chamber; 4. Annular cooling plate; 5. Feed inlet; 6. Air shut-off valve; 7. Pressure detection valve; 8. Sampling valve; 9. Sampling port; 10. Sample storage tube; 11. Sampling tube fixing base; 12. Lifting base; 13. Negative pressure suction port; 14. Gas discharge port. Detailed Implementation
[0011] This application provides a device for protecting samples and the environment, effectively solving the technical problems that workers often face leakage risks when sampling volatile toxic liquid samples, and that the samples are prone to volatilization and generate toxic gases during the sampling process. This not only leads to a reduction in sample volume, delays in subsequent experimental testing, and sample loss, but also causes workers to easily inhale toxic gases when in close contact, which can damage the respiratory system and affect their health in the long term. Example
[0012] like Figure 1 - Figure 5 As shown, the technical solution in this application aims to effectively address the risks of leakage that workers often face when sampling volatile and toxic liquids. During sampling, the samples are prone to volatilization, generating toxic gases, which leads to reduced sample volume, delays in subsequent experiments, and sample loss. Furthermore, close contact with these gases can cause workers to inhale the toxic gases, resulting in long-term damage to the respiratory system and impacting their health. The overall approach is as follows: To address the problems existing in the prior art, this utility model provides a device for protecting samples and the environment, including a sample protection device shell 1. The four sides of the sample protection device shell 1 are made of transparent acrylic sheets, and the material of the sample protection device shell 1 allows for easy observation of the internal conditions. A sample storage tank 2 is fixedly installed inside the sample protection device shell 1. The sample storage tank 2 is used to store samples, and the samples stored in the sample storage tank 2 are volatile toxic liquids. The sample storage tank 2 is made of polytetrafluoroethylene. The sample storage tank 2 is provided with an observation port made of borosilicate glass for observing the liquid level and sample status inside the sample storage tank 2. A feed port 5 is provided at the top of the sample protection device shell 1 for filling the sample storage tank 2 with liquid samples. A sampling port 9 is provided at the bottom of the sample storage tank 2. The sampling port 9 is hollow in shape similar to a syringe needle.
[0013] The sample protection device housing 1 is equipped with a sealing sampling mechanism at the bottom. The sealing sampling mechanism can prevent sample leakage when filling liquid samples and can safely complete the sampling operation, preventing sample volatilization and leakage during the sampling process.
[0014] The sealed sampling mechanism includes an annular cooling plate 4. A cooling mechanism is located inside the sample protection device housing 1. The annular cooling plate 4 is connected to the cooling mechanism and is fixedly installed on the outside of the sample storage tank 2. The annular cooling plate 4 is used to maintain the temperature inside the sample storage tank 2 and prevent sample evaporation due to excessive temperature. A pressure detection valve 7 is located above the sample storage tank 2 and is fixedly installed on the circumferential surface of the inlet 5. A pressure detection device is located inside the pressure detection valve 7, and a pressure gauge is installed on the pressure detection valve 7. The pressure detection valve 7 is used to observe the air pressure inside the sample storage tank 2, facilitating the observation of the sample status within the tank. An air cutter is located above the pressure detection valve 7. Air shut-off valve 6, with a handle, is used to cut off the contact between sample storage container 2 and outside air. A sampling chamber 3 is fixedly installed below the outer shell 1 of the sample protection device. The sampling chamber 3 provides a sealed environment for personnel to take samples. A sealed switch door and an operation panel are provided on the sampling chamber 3. A lifting base 12 is fixedly installed inside the sampling chamber 3. The lifting base 12 consists of upper and lower sleeves and has a screw lifting mechanism inside. A sampling tube fixing base 11 is fixedly installed at the upper end of the lifting base 12. A sample storage tube 10 is located above the sampling tube fixing base 11 for storing and removing samples. The sample storage tube 10 has a sealing ring at the top. A sampling tube fixing base 11 is used to fix the sample storage tube 10. A sampling valve 8 is provided on the sampling port 9, and a pressure pump is installed inside the sampling valve 8. The sampling valve 8 is connected to the bottom of the sample storage tank 2 and is used to discharge the sample from the sampling port 9 into the sample storage tube 10. The operation panel on the sampling chamber 3 can control the screw lifting mechanism inside the lifting base 12. The lifting base 12 drives the sample storage tube 10 to move upward. When the sample storage tube 10 contacts the sampling port 9, the special shape of the sampling port 9 can pierce the sealing ring on the sample storage tube 10. At this time, the sampling valve 8 transfers the sample into the sample storage tube 10. The sampling chamber 3 is equipped with a negative pressure intake port 13, which contains a negative pressure fan. The negative pressure intake port 13 is opened during sampling to expel any volatile gases that may overflow from the sampling chamber 3. The negative pressure intake port 13 is equipped with a gas exhaust port 14, which is connected to the air purification system in the factory. The gas absorbed by the negative pressure intake port 13 through the negative pressure fan will enter the factory's air purification system through the gas exhaust port 14. After the air in the sampling chamber 3 is drawn in, the lifting base 12 drives the sample storage tube 10 to descend. At this time, the staff can open the sealing switch door on the sampling chamber 3, put the sealing sleeve on the sample storage tube 10 and take it out, and then close the sealing switch door.
[0015] Working principle: First, open the air shut-off valve 6 above the pressure detection valve 7 (operated via its handle), and fill the volatile toxic liquid sample into the polytetrafluoroethylene sample storage tank 2 through the feed inlet 5 above the sample protection device housing 1. After filling, close the air shut-off valve 6 to cut off the contact between the sample storage tank 2 and the outside air. At the same time, activate the cooling mechanism inside the sample protection device housing 1 to start the annular cooling plate 4 connected to the mechanism, maintain a stable temperature inside the sample storage tank 2, and prevent the sample from evaporating due to excessive temperature. The operator can check the liquid level and sample status inside the tank through the borosilicate glass observation port on the sample storage tank 2, and monitor the air pressure inside the tank through the pressure gauge on the pressure detection valve 7 to ensure that the initial state is normal.
[0016] The second step is to confirm that the sealing switch door on the sampling chamber 3 is closed to ensure the sealing of the sampling environment. Using the operation panel on the sampling chamber 3, start the lifting base 12 so that the sample storage tube 10 on the sampling tube fixing base 11 at the upper end of the lifting base 12 moves upward with the lifting mechanism until the sample storage tube 10 contacts the sampling port 9 (hollow and similar to the shape of a syringe needle) below the sample storage tank 2. The sampling port 9 pierces the sealing ring above the sample storage tube 10 to complete the sealing calibration of the sampling position.
[0017] The third step involves opening the sampling valve 8 on the sampling port 9, and using a pressure pump to transfer the sample from the sample storage tank 2 to the sample storage tube 10 through the sampling port 9. Simultaneously, the negative pressure fan of the negative pressure intake port 13 in the sampling chamber 3 is turned on. If any volatile gas overflows during the sampling process, the negative pressure fan will suck it into the negative pressure intake port 13 and send it to the purification system for processing through the gas exhaust port 14 connected to the factory air purification system. After the sample is transferred, the sampling valve 8 and the negative pressure intake port 13 are closed, and the lifting base 12 is controlled by the operation panel to lower the sample storage tube 10. Then, the sealing switch door of the sampling chamber 3 is opened, the sample storage tube 10 is put on the sealing sleeve and taken out, and finally the sealing switch door is closed to complete one sampling operation.
[0018] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A device for protecting a sample and the environment, comprising a sample protection device housing (1), characterized in that: A sample storage tank (2) is fixedly installed inside the outer shell (1) of the sample protection device. The sample storage tank (2) is provided with an observation port. The sample protection device outer shell (1) is provided with a feed port (5) above it and a sampling port (9) below it. The sample protection device housing (1) is provided with a sealing sampling mechanism below it. The sealing sampling mechanism can prevent sample leakage when filling liquid samples and can complete the sampling operation to prevent sample volatilization and leakage during the sampling process.
2. The device for protecting samples and the environment according to claim 1, characterized in that, The sealed sampling mechanism includes an annular cooling plate (4), the sample storage tank (2) is made of polytetrafluoroethylene, and the sample protection device housing (1) is provided with a cooling mechanism. The annular cooling plate (4) is connected to the cooling mechanism inside the sample protection device housing (1).
3. The device for protecting samples and the environment according to claim 2, characterized in that, The annular cooling plate (4) is fixedly installed on the outside of the sample storage tank (2). A pressure detection valve (7) is provided above the sample storage tank (2). The pressure detection valve (7) is fixedly installed on the circumferential surface of the feed inlet (5).
4. The device for protecting samples and the environment according to claim 3, characterized in that, The pressure detection valve (7) is equipped with a pressure detection device, and a pressure gauge is provided on the pressure detection valve (7). An air shut-off valve (6) is provided above the pressure detection valve (7).
5. The device for protecting samples and the environment according to claim 4, characterized in that, A sampling chamber (3) is fixedly installed below the outer shell (1) of the sample protection device. A sealed switch door is provided on the sampling chamber (3). A lifting base (12) is fixedly installed inside the sampling chamber (3).
6. The device for protecting samples and the environment according to claim 5, characterized in that, The upper end of the lifting base (12) is fixedly installed with a sampling tube fixing base (11), and a sample storage tube (10) is provided above the sampling tube fixing base (11).
7. The device for protecting samples and the environment according to claim 6, characterized in that, A sealing ring is provided above the sample storage tube (10), and a sampling valve (8) is provided on the sampling port (9), and a pressure pump is provided inside the sampling valve (8).
8. The device for protecting samples and the environment according to claim 7, characterized in that, The sampling valve (8) is connected to the bottom of the sample storage tank (2). The sampling chamber (3) is provided with a negative pressure air intake port (13). The negative pressure air intake port (13) is provided with a negative pressure fan. The negative pressure air intake port (13) is provided with a gas exhaust port (14).