CN216524975U

CN216524975U - Self-sealing sampling valve

Info

Publication number: CN216524975U
Application number: CN202123114518.2U
Authority: CN
Inventors: 董落成; 朱承孝
Original assignee: Nanjing Advanced Fluid Management Co ltd
Current assignee: Nanjing Advanced Fluid Management Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-05-13
Anticipated expiration: 2031-12-13

Abstract

The utility model relates to the technical field of sampling valves, in particular to a self-sealing sampling valve which comprises a sampling bottle and a valve body, wherein the valve body is connected with the sampling bottle through an adapter, a needle head is arranged at the bottom of the adapter, a top hollow cover is arranged at the top of the sampling bottle, and a silica gel composite gasket is arranged in the top hollow cover.

Description

Self-sealing sampling valve

Technical Field

The utility model relates to the technical field of sampling valves, in particular to a self-sealing sampling valve.

Background

According to market research, in the domestic chemical industry equipment field, the high-risk medium sampling mode on the pipeline at present mainly is through increasing a corrosion-resistant trip valve in the pipeline branch and controls the sample, and this sample main process is: before sampling each time, the potential safety hazard caused by overlarge pressure is sometimes considered, the section of process pipeline is stopped, then a cut-off valve of a branch is opened, a section of material is connected by a large special container, then the valve is closed, and a small amount of sample is extracted by a small container bottle. There are many cost and safety issues with this pipeline sampling process: first, if the process line is shut down, the production efficiency is reduced and the production cost is increased. Second, this branch road trip valve is opened and is closed the back inside can have the raffinate phenomenon, will mix mutually with "fresh medium" when opening the valve next time, influences the testing result of sample, must be with the last material clean of discharging in the pipeline just can take a sample. Thirdly, the flow channel caliber of the stop valve is generally larger, and the flow is difficult to control by the operation of a handle during discharging each time. Fourthly, a large container must be used for receiving the discharged medium, so that on one hand, the medium is exposed in the air environment and is polluted greatly, and on the other hand, the medium has great personal safety hazards to operators. Some manufacturers also use imported stainless steel valves to take samples, so that metal ions in the stainless steel and media are easy to react and pollute the media.

Chinese patent 201822225656.X discloses a fluoroplastic lining sampling valve, which can sample on line, has the advantages of representative sample, no residue after sampling, adjustable flow rate, safety, environmental protection, corrosion resistance, ageing resistance and the like, and solves the problems of common use effect and unsafe use effect in the sampling process of the existing method. The sampling bottle is generally fixed at the lower end of the sampling valve through threaded connection in the whole sampling process, the sampling bottle can be unscrewed after sampling is completed, and then the bottle cap is covered, so that the structure is suitable for most working conditions. However, some media are volatile or easily react with air to generate smoke, and when the bottle cap is covered under the condition, volatile or reactive gas generated in the media can cause harm to human bodies to different degrees.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a self-sealing sampling valve to solve the problem that a sampling valve structure in the prior art is not suitable for sampling volatile media or media which easily react with air.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a from seal sample valve, includes sampling bottle and valve body, the valve body passes through the adapter with the sampling bottle and is connected, the adapter bottom is equipped with the syringe needle, the sampling bottle top is equipped with the headspace lid, silica gel composite pad is equipped with in the headspace lid.

Preferably, the adapter is connected with an exhaust joint on the side surface.

Preferably, the bottom of the sampling bottle is provided with a bottle support.

Compared with the prior art, the utility model has the beneficial effects that: the needle type sampling is adopted, and after the sampling is finished, the silica gel composite gasket can be automatically sealed after the sampling bottle is integrally pulled out, so that the volatility of the medium is reduced, and the medium in the bottle is prevented from reacting with the outside air; the exhaust joint is arranged, so that the air in the sampling bottle can be directly pumped out or replaced, and the accuracy of the detection medium is improved; the process of disassembling and assembling the sampling bottle is simple and convenient, and the bottle support supports the sampling bottle to play a role in safety and fixation.

Drawings

FIG. 1 is a front sectional view of the present invention;

fig. 2 is a side sectional view of the present invention.

In the figure: the sampling device comprises a bottle support 1, a sampling bottle 2, a headspace cap 3, a silica gel composite gasket 4, a connector 5, an exhaust connector 6, a lower cap 7, a valve body 8, a valve core 9, an upper cap 10 and a handle 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a self-sealing sampling valve comprises a sampling bottle 2 and a valve body, wherein the valve body is connected with the sampling bottle through an adapter, specifically, a lower cover 7 is connected above the adapter 5, the upper part of the lower cover 7 is connected with a valve body 8, the upper part of the valve body 8 is connected with an upper cover 10, the top end of a valve core 9 is fixed with the upper cover 10, the lower end of the valve core 9 is tightly matched and sealed with the lower cover 7, one end of a handle 11 is connected with the top end of the valve core 9 through a pin, the other end is connected with the upper cover 10 (the structure of the valve body belongs to the prior art, which is not described in detail in the application), a needle head is arranged at the bottom of the adapter 5, a top hollow cover 3 is arranged at the top of the sampling bottle 2, a silica gel composite gasket 4 is arranged in the cover of the top hollow cover 3, the silica gel composite gasket 4 and the sampling bottle 2 are assembled and placed under the adapter 5 during sampling, the needle head on the adapter 5 passes through the silica gel composite gasket 4, after the sample, take off sample bottle 2, silica gel composite pad 4 seals automatically, prevents that the medium from volatilizing, prevents that medium and outside air in the bottle from reacting.

Preferably, be connected with the exhaust joint in adapter 5 side, sample bottle 2 and valve body fixed back, can directly find time the air in the sample bottle 2 or the replacement is handled through exhaust joint 6, has improved the accuracy of detection medium.

Preferably, the bottom of the sampling bottle 2 is provided with a bottle support 1, and the bottle support 1 supports the sampling bottle 2 to play a role in safety fixation.

According to the device, the needle head is arranged at the bottom of the adapter, needle type sampling is adopted, and after sampling is completed, the sampling bottle can be automatically sealed after being integrally pulled out, so that the volatility of a medium is reduced, and the medium in the bottle is prevented from reacting with the outside air; meanwhile, the exhaust joint is arranged, so that the air in the sampling bottle can be directly pumped out or replaced, and the accuracy of the detection medium is improved; the process of disassembling and assembling the sampling bottle is simple and convenient, and the bottle support supports the sampling bottle to play a role in safety and fixation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a from a mouthful sampling valve, includes sampling bottle (2) and valve body, its characterized in that: the valve body is connected through adapter (5) with sample bottle (2), adapter (5) bottom is equipped with the syringe needle, sample bottle (2) top is equipped with headspace lid (3), silica gel composite pad (4) are equipped with in headspace lid (3) lid.

2. The self-sealing sampling valve of claim 1, wherein: the side surface of the adapter (5) is connected with an exhaust joint (6).

3. The self-sealing sampling valve of claim 1, wherein: the bottom of the sampling bottle (2) is provided with a bottle support (1).