Sampler and sample pretreatment system
By introducing DBB valves and constant temperature heaters into the sampler, the problems of sampling difficulties and probe vibration in cold environments are solved, and efficient sampling and sample pre-processing are achieved at different temperatures.
Patent Information
- Application Number
- CN202422233270.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-11
AI Technical Summary
Existing samplers are difficult to sample in cold environments, and the probe length is prone to vibrating when it is too long, resulting in slow sampling speed and affecting sampling efficiency.
The threaded probe with DBB valve and a constant temperature heater are used to control the valve flow rate and heater to ensure the constant sample temperature and improve the adaptability and sampling efficiency of the sampler.
It realizes smooth sampling under different temperature environments, improves the efficiency of sampling and subsequent sample pretreatment, and extends the service life of the sampler.
Smart Images
Figure CN223139047U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of samplers for on-line analysis of samples, and particularly relates to a sampler and a sample pretreatment system. Background Art
[0002] In a sample pretreatment system, a sampler is required to sample samples. If the sampling environment is cold and the sample temperature is too low, it is not easy for the sampler to sample it; or when the probe length is too long, the probe will vibrate during the sampling process and the sampling speed is slow. Summary of the Utility Model
[0003] The first object of the utility model is to provide a sampler to solve the problems put forward in the above background art.
[0004] To achieve the above object, the utility model provides the following technical solution: a sampler, which includes a sampler body; a third valve is arranged on the side surface of the sampler body;
[0005] A threaded probe, which has a connection end and a sampling end; the connection end is connected to the sampler body, and the sampling end is used for collecting samples; the threaded probe is a hollow structure, and the collected samples enter the interior of the sampler body through the hollow cavity; the third valve controls the flow rate of the samples collected by the threaded probe;
[0006] A DBB valve is fixedly connected to the sampler body; the DBB valve has a first valve and a second valve, and one ends of the first valve and the second valve are both connected to the connection section of the threaded probe. The first valve controls the on-off of the samples collected by the threaded probe, and the second valve controls the flow rate of the samples collected by the threaded probe. The DBB valve has a double cut-off function, which protects the valve itself from being damaged due to overpressure and improves the service life of the sampler.
[0007] According to the utility model, further, a heater is arranged on one side of the sampling body, and the heater is in contact with the threaded probe, and heat is transferred to the threaded probe to increase its internal temperature. Samples with lower temperatures are heated, and subsequent analysis operations are quickly carried out after sampling, improving the efficiency of subsequent operations.
[0008] According to the utility model, further, the heater is fixedly connected to the sampling body by bolts. The detachable fixed connection is convenient for maintenance and replacement.
[0009] According to the utility model, further, the heater is a constant temperature heating element. Thus, the temperature of the threaded probe is constant, and then the temperature of the samples during the collection process is kept constant, improving the accuracy of subsequent sample analysis.
[0010] According to the present utility model, further, the first valve, the second valve, and the third valve are lockable valves, thereby avoiding problems caused by accidental touching of the valves to start or stop.
[0011] According to the present utility model, further, the third valve is a needle valve.
[0012] According to the present utility model, further, a cleaning port is provided on the surface of the sampling body, and the cleaning port is sealed by a plug.
[0013] The second object of the present utility model is to provide a sample pretreatment system, wherein the above sampler is used for sample sampling.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: improving the adaptability of the sampler to the sampling environment, enabling smooth analysis after sampling regardless of the temperature, and improving the efficiency of sampling and subsequent sample pretreatment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the first perspective of the sampler of the present utility model;
[0016] Figure 2 is a schematic structural diagram of the second perspective of the sampler of the present utility model;
[0017] Figure 3 is an overall schematic diagram of the sampler of the present utility model.
[0018] In the figure: 100 - sampler body, 200 - DBB valve, 210 - first valve, 220 - second valve, 230 - third valve, 300 - threaded probe, 400 - plug, 500 - heater. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The present utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.
[0020] Please refer to Figures 1 - 3, A sampler disclosed in an embodiment of the present application, as the most important structure in a sample pretreatment system, is required to sample the sample and then perform subsequent pretreatment. It includes a sampler body 100. The sampler body 100 is a housing structure. The sampler body 100 is provided with a threaded probe 300. One end of the threaded probe 300 is provided with a DBB valve (i.e., a double-block and bleed valve) 200 that controls whether to perform sampling. The other end of the threaded probe 300 extends away from the sampler body 100 for sampling the sample. The threaded probe 300 is a hollow structure, and the sampled sample enters the interior of the sampler body 100 through this hollow cavity. The DBB valve 200 is a double-block and bleed valve with a double-block function, which can protect the valve itself from damage due to overpressure and improve the service life of the sampler.
[0021] Specifically, the DBB valve 200 has a first valve 210 and a second valve 220. One end of each of the first valve 210 and the second valve 220 is connected to the threaded probe 300. Among them, the first valve 210 and the second valve 220 control the on-off of sampling; a third valve 230 is provided on the side of the sampler body 100. The third valve 230 controls the sampling flow rate, realizes the control of the sampling flow rate, avoids the situation that the threaded probe 300 vibrates due to too large a sampling flow rate, affects the overall structural stability, and improves the service life of the sampler. The third valve 230 is preferably a needle valve. To avoid incorrect operation resulting in sampling by the sampler during non-sampling times, the first valve 210, the second valve 220, and the third valve 230 are selected as lockable valves.
[0022] To achieve smooth sampling even when the sample temperature is relatively low and to increase the sample temperature during sampling, a heater 500 is provided on one side of the sampling body 100. The heater 500 is in contact with the threaded probe 300, and the heat is gradually transferred to the entire threaded probe 300, increasing the internal temperature of the threaded probe 300. Then, when the sampled sample enters the interior of the threaded probe 300, the temperature of the sample also increases accordingly. The heater 500 is a constant-temperature heating element; the heater 500 is an electrically controlled heating element. When heating is required, the power is turned on, and the heater 500 performs constant-temperature heating. The heat is transferred to the threaded probe 300 to heat the sampled sample, solving the problem that the temperature of the sampled sample is too low and cannot be analyzed in time, and improving the analysis efficiency. Preferably, the surface of the heater 500 has a first bolt opening, and the surface of the sampler body 100 has a second bolt opening corresponding to the first bolt opening. The first bolt opening and the second bolt opening are fixed by bolts to achieve their fixed connection; the heating end of the heater 600 is connected to the threaded probe 300 through a flange.
[0023] The surface of the sampling body 100 is provided with a cleaning port, which is sealed by a plug 400. During the sample collection process, the plug 400 seals the cleaning port to prevent the collected sample from leaking; when the sampler needs to be cleaned, open the first valve 210, close the second valve 220, open the plug 400, and blow back from the local pretreatment system to clean the sample pipeline.
[0024] The above are only the preferred embodiments of the present invention, and do not impose any formal or substantial limitations on the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the premise of the present invention, several improvements and supplements can still be made, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any equivalent changes made by those who are familiar with this technology within the spirit and scope of the present invention by making some changes, modifications and evolutions using the above-disclosed technical content are equivalent embodiments of the present invention; at the same time, any equivalent changes made to the above embodiments based on the essential technology of the present invention, including changes, modifications and evolutions, still fall within the scope of the technical solution of the present invention.
Claims
1. A sampler, wherein, including, a sampler body, on the side surface of which a third valve is provided; a threaded probe, having a connection end and a sampling end; the connection end is connected to the sampler body, and the sampling end is used for collecting samples; the threaded probe is of a hollow structure, and the collected samples enter the interior of the sampler body through the hollow cavity; the third valve controls the flow rate of the samples collected by the threaded probe; a DBB valve, fixedly connected to the sampler body; the DBB valve has a first valve and a second valve, and one ends of the first valve and the second valve are both connected to the connection section of the threaded probe, and the first valve and the second valve control the on-off of the samples collected by the threaded probe.
2. The sampler according to claim 1, wherein, a heater is provided on one side of the sampler body, the heater is in contact with the threaded probe, and heat is transferred to the threaded probe to raise its internal temperature.
3. The sampler according to claim 2, wherein, The heater is fixedly connected to the sampler body by bolts.
4. The sampler according to claim 2, wherein, The heater is a constant temperature heating element.
5. The sampler according to claim 1, wherein, The first valve, the second valve and the third valve are lockable valves.
6. The sampler according to claim 1 or 5, wherein, The third valve is a needle valve.
7. The sampler according to claim 1, wherein, A cleaning port is provided on the surface of the sampler body, and the cleaning port is sealed by a plug.
8. A sample pretreatment system, wherein, Using the sampler according to any one of claims 1-7 for sample sampling.