阅读说明：本技术 一种可同步对多个样品瓶进行扫气的装置 (Device capable of synchronously scavenging multiple sample bottles ) 是由 杜勇 宋虎跃 邱海鸥 张驰 王诗宇 于 2020-03-23 设计创作，主要内容包括：本发明涉及化学实验设备领域,尤其涉及一种可同步对多个样品瓶进行扫气的装置,包括储气单元、三通阀、真空泵、分流单元和送气单元,所述三通阀分别与所述储气单元、所述真空泵和所述分流单元连通,所述分流单元具有多个第三出气端,且其每个所述第三出气端上均设有所述送气单元,并可与对应的所述送气单元的第二进气端连通或断开,所述送气单元的第四出气端与样品瓶连通,所述储气单元用于存储气体,所述送气单元用于向所述样品瓶内输送气体。本发明所述的扫气装置,具有结构简单、操作简便、实用性强、扫气效率高和实施成本低等优点。(The invention relates to the field of chemical experimental equipment, in particular to a device capable of synchronously scavenging a plurality of sample bottles, which comprises a gas storage unit, a three-way valve, a vacuum pump, a flow dividing unit and a gas supply unit, wherein the three-way valve is respectively communicated with the gas storage unit, the vacuum pump and the flow dividing unit, the flow dividing unit is provided with a plurality of third gas outlet ends, each third gas outlet end is provided with the gas supply unit and can be communicated or disconnected with the second gas inlet end of the corresponding gas supply unit, the fourth gas outlet end of the gas supply unit is communicated with the sample bottles, the gas storage unit is used for storing gas, and the gas supply unit is used for supplying gas into the sample bottles. The scavenging device has the advantages of simple structure, simple and convenient operation, strong practicability, high scavenging efficiency, low implementation cost and the like.)

1. The device capable of synchronously scavenging a plurality of sample bottles is characterized by comprising a gas storage unit (10), a three-way valve (20), a vacuum pump (30), a flow dividing unit and a gas supply unit, wherein the three-way valve (20) is respectively communicated with the gas storage unit (10), the vacuum pump (30) and the flow dividing unit, the flow dividing unit is provided with a plurality of third gas outlet ends, each third gas outlet end is provided with the gas supply unit and can be communicated or disconnected with a corresponding second gas inlet end of the gas supply unit, the fourth gas outlet end of the gas supply unit is communicated with the sample bottles (100), the gas storage unit (10) is used for storing gas, and the gas supply unit is used for supplying gas into the sample bottles (100).

2. The apparatus for synchronously purging a plurality of sample bottles according to claim 1, further comprising a pressure reducing valve (50), wherein the pressure reducing valve (50) is installed on the first gas outlet end of the gas storage unit (10).

3. The apparatus for synchronously purging a plurality of sample bottles as claimed in claim 1, wherein said gas storage unit (10) is a gas storage bottle.

4. The apparatus for synchronously purging a plurality of sample bottles according to claim 1, wherein the flow dividing unit is a distributor (40), the distributor (40) has a plurality of flow dividing joints (41), and the flow dividing joints (41) are provided with the air supply units.

5. The device for synchronously scavenging a plurality of sample bottles of claim 4, wherein the air supply unit comprises an air supply pipe (60), a connector (61) and a needle (62), one end of the air supply pipe (60) is communicated with the corresponding flow dividing connector (41) of the flow dividing unit, and the needle (62) is arranged at the other end of the air supply pipe (60) and is detachably connected with the air supply pipe (60) through the connector (61).

6. Device for simultaneous scavenging of multiple sample bottles according to claim 5 characterized in that the air supply pipe (60) is a Teflon hose.

7. Device for simultaneous scavenging of several sample bottles according to claim 5 characterized in that said connector (61) is a luer connector.

8. Device for simultaneous scavenging of several sample bottles according to claim 5 characterized in that said needle (62) is a stainless steel needle.

Technical Field

The invention relates to the field of chemical experimental equipment, in particular to a device capable of synchronously scavenging a plurality of sample bottles.

Background

Many experiments or instrumental analyses require oxygen-free, CO-free₂Or is free of N₂And the like, so that the sample bottle (100) needs to be subjected to air removal treatment. For example, in chemical or biological experiments, the common method is to continuously purge the experiment bottle with nitrogen gas to replace air and then quickly cover the experiment bottle, and the method is greatly influenced by manual operation and may mix a certain amount of interference gas; for example, when a headspace bottle is used for reaction in a gas stable isotope test, He gas is generally used for blowing air, and the conventional operation is to automatically blow and empty the gas by using an auto-sampler-loaded double-hole needle, but the time is up to ten minutes per sample, so that the test efficiency is seriously influenced, and the waste of He gas resources is caused.

Disclosure of Invention

In view of the above, the present invention provides a device capable of simultaneously scavenging a plurality of sample bottles.

The invention provides a device capable of synchronously scavenging a plurality of sample bottles, which comprises a gas storage unit, a three-way valve, a vacuum pump, a flow dividing unit and a gas supply unit, wherein the three-way valve is respectively communicated with the gas storage unit, the vacuum pump and the flow dividing unit, the flow dividing unit is provided with a plurality of third gas outlet ends, each third gas outlet end is provided with the gas supply unit, the gas supply unit can be communicated with or disconnected from a second gas inlet end of the corresponding gas supply unit, a fourth gas outlet end of the gas supply unit is communicated with the sample bottles, the gas storage unit is used for storing gas, and the gas supply unit is used for supplying gas into the sample bottles.

Further, the gas storage device also comprises a pressure reducing valve, wherein the pressure reducing valve is arranged on the first gas outlet end of the gas storage unit.

Further, the gas storage unit is a gas storage bottle.

Further, the reposition of redundant personnel unit is the distributor, just all be equipped with on every reposition of redundant personnel joint of distributor the unit of supplying gas.

Further, the air supply unit comprises an air supply pipe, a connector and a needle head, one end of the air supply pipe is communicated with the shunt connector corresponding to the shunt unit, and the needle head is arranged at the other end of the air supply pipe and is detachably connected with the air supply pipe through the connector.

Further, the air supply pipe is a Teflon hose.

Further, the connector is a luer connector.

Further, the needle is a stainless steel needle.

The technical scheme provided by the invention has the beneficial effects that: the device capable of synchronously scavenging a plurality of sample bottles, which is disclosed by the invention, is provided with a plurality of scavenging air paths, and through the modes of vacuumizing and charging and scavenging air, not only can the synchronous scavenging operation of the plurality of sample bottles be realized, the scavenging efficiency be improved, but also the direct butt joint of the interior of the traditional sample bottle and air can be effectively avoided, the pollution probability is reduced, and the consumption of the scavenging air is obviously saved. In addition, the device also has the advantages of simple structure, simple and convenient operation, strong practicability, low implementation cost and the like.

Drawings

FIG. 1 is a schematic structural diagram of an apparatus for simultaneously purging a plurality of sample bottles according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides an apparatus capable of synchronously purging a plurality of sample bottles, including a gas storage unit 10, a pressure reducing valve 50, a three-way valve 20, a vacuum pump 30, a flow dividing unit and a gas feeding unit, wherein the gas storage unit 10 is a gas storage bottle for storing gas, a first gas outlet of the gas storage unit 10 is communicated with a first communication end of the three-way valve 20 through a pipeline, the pressure reducing valve 50 is installed at the first gas outlet of the gas storage unit 10, a second gas outlet of the vacuum pump 30 is communicated with a second communication end of the three-way valve 20 through a pipeline, the flow dividing unit has a first gas inlet and a plurality of third gas outlets, the first gas inlet is communicated with a third communication end of the three-way valve 20 through a pipeline, each of the third gas outlets is provided with the gas feeding unit and can be communicated with or disconnected from a second gas inlet of the corresponding gas feeding unit, the fourth gas outlet end of the gas supply unit is communicated with the sample bottle 100 and is used for supplying gas into the sample bottle 100. It should be noted that, in the present invention, the pipelines are all 1/8 stainless steel pipes, and the purpose of using stainless steel pipes instead of plastic pipes is to reduce the expansion and contraction during inflation and air exhaust, reduce the gas loss, and improve the exhaust efficiency. In addition, as the longer the length of the pipeline is, the less the gas in the sample bottle is pumped away during air pumping, and the lower the air pumping and air exchange efficiency is, the pipeline communicated with the first air inlet end of the flow dividing unit is required to be as short as possible, so as to achieve the purposes of reducing the pipeline space for air pumping and increasing the air scavenging efficiency.

In the above embodiment, the three-way valve 20 is an electric three-way switching valve, which can realize semi-automatic operation and facilitate replacement of the gas path at any time.

In the above embodiment, the flow dividing unit is the distributor 40, in the present invention, the distributor 10 is a 10-head stainless steel distributor, which has 10 flow dividing joints 41, and each flow dividing joint 41 has a valve, and the flow dividing joint 41 forms a third air outlet end of the flow dividing unit, and by closing and opening the valve on the flow dividing joint 41, the disconnection and the communication with the air supply unit are correspondingly realized. Wherein, the more the number of reposition of redundant personnel joint 41 on the reposition of redundant personnel unit, it can sweep sample bottle 100's quantity simultaneously also more, and then reach the purpose that improves device scavenging efficiency. Here, it should be noted that the number of the tap joints 41 on the branching unit is not limited in the present invention, and in practical applications, different dispenser models can be selected as needed.

In the above embodiment, the air supply unit includes an air supply pipe 60, a connector 61 and a needle 62, one end of the air supply pipe 60 is communicated with the third air supply end corresponding to the flow dividing unit, and the needle 62 is disposed at the other end of the air supply pipe 60 and detachably connected to the air supply pipe 60 through the connector 61. Wherein the needle 62 can perform the scavenging operation of the sample bottle 100 with the bottle pad, and the joint 61 facilitates the installation and the removal of the needle 62 so as to adapt to the scavenging operation of various sample bottles 100.

In the above embodiment, the air supply pipe 60 is a teflon hose, and the length of the air supply pipe 60 is less than 30cm, the teflon hose has high stiffness, so that it does not expand or contract significantly under high pressure of inflation and low pressure of suction, and the teflon hose can move in a bending manner, so that it is not restricted by the position of the sample bottle 100 during the scavenging process.

In the above embodiment, the connector 61 is a female luer connector, wherein a pagoda head of the female luer connector is fixed at one end of the air supply pipe 60 far away from the shunt unit, and an internal screw head of the female luer connector is used for fixedly connecting the needle 62, so as to realize the connection and fixation of the needle 62 and the air supply pipe 60. Luer connectors have the advantages of stable connection, difficult falling, air leakage and the like.

In the above embodiment, the needle 62 is a stainless steel needle.

The working process of the scavenging device comprises the following steps: 1. closing the valve of each shunt joint 41 on the shunt unit, adjusting the three-way valve 20 to enable the first communication end and the third communication end to be communicated, opening the gas storage device, and simultaneously adjusting the pressure reducing valve to be 50-0.1 MPa; 2. the plurality of sample bottles 100 are respectively communicated with the air supply pipe 60 in a one-to-one correspondence manner through the needles 62, the valve of each shunt joint 41 on the shunt unit is opened, and the air storage unit 10 respectively inflates air into each sample bottle 100 through the shunt unit and the air supply pipe 60; 3. turning on the vacuum pump 30 and adjusting to a proper vacuum degree; 4. adjusting the three-way switching valve to communicate the second communication end with the third communication end, and at this time, the vacuum pump 30 respectively pumps gas from each sample bottle 100 through the flow dividing unit and the gas feeding unit; 5. repeatedly switching the three-way switching valve to perform multiple inflation and air extraction operations on each sample bottle 100 until the air in each sample bottle 100 is replaced by purge gas (which refers to gas stored in the storage device), and performing the last inflation operation; 6. closing the valve of each shunt joint 41 on the shunt unit, pulling out the sample bottle 100, and then quickly pricking the sample bottle 100 with another needle to release the pressure in the sample bottle 100, thereby realizing the synchronous scavenging operation of a plurality of sample bottles 100; 7. repeating the 2-6 operations allows for the next batch of sample bottles 100 to be purged.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.