Pressure relief assembly for capillary column coating devices

Abstract

The present invention provides a pressure relief component for a capillary chromatographic column coating device, including a gas chromatographic column coating device, the gas chromatographic column coating device including a pressure unit, including: a sealed shell, a containing space is formed inside the sealed shell, the outer peripheral wall of the sealed shell is provided with a sealing port, the sealing port is communicated with the containing space, and the sealing port is used for the gas chromatographic column to pass through from outside the sealed shell; a pressure relief mechanism, the pressure relief mechanism includes a trigger component and a switch component, the trigger component is arranged in the containing space and located at the lower part of the containing space, the trigger component is electrically connected to the switch component, and the switch component is arranged in the pressure unit and controls the pressure unit to open or close. The coating liquid outflow end of the gas chromatographic column is accommodated by the sealed sealed shell to prevent the coating liquid from flowing out or volatilizing, and a trigger mechanism is arranged in the sealed shell, and after the coating liquid flows out, the trigger mechanism starts and controls the pressure unit to stop supplying gas, and stops coating of the gas chromatographic column. Effectively prevent the coating liquid from volatilizing and the chromatographic column port from contacting the outside.

Description

Technical Field

[0001] The invention relates to the field of chemistry, and in particular to a pressure relief component for a capillary chromatographic column coating device. Background Art

[0002] The invention patent with application number CN201821602396.7 discloses a capillary chromatographic column coating device, including a sealed container and a pressure unit; the container wall of the sealed container is respectively provided with a chromatographic column connection hole, an air inlet and an openable and closable sealing door, and the inner cavity of the sealed container is also provided with a fixing frame; in the use state, the container containing the coating liquid enters the inner cavity of the sealed container through the sealing door and is placed on the fixing frame, the chromatographic column is inserted into the inner cavity of the sealed container through the chromatographic column connection hole, and the sealed container and the pressure unit are connected through the air inlet. When in use, the coating liquid is placed in the sealed container, and then one end of the gas chromatographic column is inserted into the container containing the coating liquid in the sealed container, and then the pressure unit provides air pressure to force the coating liquid in the sealed container into the gas chromatographic column, and the coating liquid of the gas chromatographic column will overflow from one end of the gas chromatographic column after being fully coated.

[0003] In one embodiment, the invention further includes an alarm unit, which includes a balance lever switch and an alarm, wherein a coating liquid collecting component is provided at one end of the balance lever switch and a conductive material is provided at the other end. In use, when the coating liquid collecting component receives the coating liquid overflowed after the capillary chromatographic column is filled, the end of the balance with the coating liquid collecting component drops and the end with the conductive material rises, thereby connecting the conductive material with the alarm circuit and triggering the alarm to sound an alarm.

[0004] However, although the invention has an alarm unit that can connect the alarm circuit with the conductive material when the coating liquid overflows, triggering the alarm to sound an alarm. However, the alarm unit is triggered by the balance principle, and the coating liquid will evaporate after falling into the coating liquid collection component, so there is a risk of experimental personnel being poisoned by the volatilization of the coating liquid. Summary of the invention

[0005] In order to solve the danger of volatilization of coating liquid after overflow and poisoning operators in the prior art, a pressure relief component for a capillary chromatographic column coating device is provided, which contains the coating liquid outflow end of the gas chromatographic column through a sealed sealing shell to prevent the coating liquid from flowing out or volatilizing, and a trigger mechanism is arranged in the sealing shell. After the coating liquid flows out, the trigger mechanism starts and controls the pressure unit to stop gas supply, thereby stopping the coating of the gas chromatographic column.

[0006] Provided is a pressure relief assembly for a capillary chromatographic column coating device, including a gas chromatographic column coating device, the gas chromatographic column coating device including a pressure unit, including: a sealed shell, a containing space is formed inside the sealed shell, a sealing port is provided on the outer peripheral wall of the sealed shell, the sealing port is communicated with the containing space, and the sealing port is used for the gas chromatographic column to pass through from outside the sealed shell; a pressure relief mechanism, the pressure relief mechanism includes a trigger component and a switch component, the trigger component is arranged in the containing space and located at the lower part of the containing space, the trigger component is electrically connected to the switch component, the switch component is arranged in the pressure unit and controls the pressure unit to be opened or closed. The trigger component includes a pressure sensor, when the coating liquid flows out of the gas chromatographic column, the coating liquid applies pressure to the pressure sensor; and when the coating liquid accumulates on the pressure sensor and reaches a weight threshold, the pressure unit is closed.

[0007] By adopting the above scheme, one end of the capillary chromatographic column is inserted into the sealing shell. When the coating liquid flows out of the gas chromatography column, it can directly enter the sealing shell. The trigger component in the sealing shell is triggered by the coating liquid to start the switch component. The switch component closes the gas supply of the pressure unit, and the coating of the gas chromatography column stops. When the coating liquid falls on the pressure sensor, the switch component can be triggered to close the pressure unit in time according to the weight of the falling coating liquid. On the one hand, it effectively prevents the coating liquid from volatilizing, and on the other hand, it maintains the pressure to prevent the outside air from contacting the coating liquid in the gas chromatography column. At the same time, the pressure unit can be closed in time to stop the coating process. The problem of easy volatilization and poisoning after the coating liquid overflows in the prior art is solved.

[0008] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a pressure relief assembly for a capillary chromatography column coating device, wherein a switch component is connected to a pressure sensor via an electric wire, and one end of the electric wire is electrically connected to the pressure sensor and is detachably fixedly connected.

[0009] By adopting the above solution, the position of the sealing shell can be easily changed.

[0010] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a pressure relief assembly for a capillary chromatographic column coating device, wherein a cleaning door is provided on the sealing shell, and the cleaning door is used to control the communication between the accommodating space and the outside.

[0011] With the above solution, after a period of use, a layer of polymer stationary phase will accumulate in the sealed shell due to the coating liquid. After the cleaning door is installed, the door can be opened to clean the containing space to maintain the accuracy of the pressure sensor.

[0012] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a pressure relief assembly for a capillary chromatography column coating device, wherein the trigger component also includes a deposition portion, the deposition portion is arranged above the pressure sensor, a replacement pad is arranged on the deposition portion, and the replacement pad is detachably connected to the top wall of the deposition portion.

[0013] By adopting the above scheme, after the coating liquid drips, it can fall on the replacement sheet for easy cleaning and replacement. The deposition part is used to accommodate the dripping coating liquid, thereby protecting the pressure sensor.

[0014] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a pressure relief assembly for a capillary chromatography column coating device, wherein the sealing shell has a bottom wall, the bottom wall is a cone with the apex pointing vertically downward, a accommodating cavity is formed inside the conical bottom wall, and the pressure sensor and the deposition portion are arranged at the bottom of the accommodating cavity.

[0015] With the above solution, the conical bottom wall is conducive to the enrichment of the dripping coating liquid. The enriched coating liquid reacts more sensitively on the pressure sensor and can also reduce the size of the deposition part for easy cleaning.

[0016] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a pressure relief assembly for a capillary chromatographic column coating device, wherein a fixing bracket is disposed at the lower end of the sealing shell.

[0017] By adopting the above solution, the stability of the sealing shell during placement can be improved.

[0018] According to another specific embodiment of the present invention, the embodiment of the present invention discloses a pressure relief assembly for a capillary chromatographic column coating device, wherein a sealing block is disposed in the sealing port, and one end of the gas chromatographic column passes through the sealing block and is accommodated in the accommodating space.

[0019] The above scheme can ensure the sealing performance of the sealing port and ensure that one end of the chromatographic column is squeezed and clamped by the sealing block after insertion to play a fixing role.

[0020] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a pressure relief assembly for a capillary chromatographic column coating device, wherein the outer wall of the sealing shell is made of a transparent material.

[0021] By adopting the above solution, it is convenient for operators to observe the sealing shell from the outside.

[0022] According to another specific embodiment of the present invention, a pressure relief assembly for a capillary chromatographic column coating device disclosed in an embodiment of the present invention further includes an alarm, and the alarm is electrically connected to the trigger component.

[0023] By adopting the above scheme, the triggering member starts the alarm response, which can prompt the operator that the coating process has been completed and the plugging operation can be carried out in time.

[0024] The beneficial effects are:

[0025] Provided is a pressure relief component for a capillary chromatographic column coating device, which contains the coating liquid outflow end of the gas chromatographic column through a sealed sealing shell to prevent the coating liquid from flowing out or volatilizing, and a trigger mechanism is arranged in the sealing shell. After the coating liquid flows out, the trigger mechanism starts and controls the pressure unit to stop the gas supply, thereby stopping the coating of the gas chromatographic column. On the one hand, the coating liquid is effectively prevented from volatilizing, and on the other hand, the pressure is maintained to prevent the outside air from contacting the coating liquid in the gas chromatographic column, and the pressure unit can be closed in time to stop the coating process. The problem of easy volatilization and poisoning after the coating liquid overflows in the prior art is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the structure of a pressure relief assembly for a capillary chromatographic column coating device in an embodiment of the present invention;

[0027] Figure 2 It is a schematic structural diagram of a sealing shell of a pressure relief assembly for a capillary chromatographic column coating device in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1: Gas chromatography column; 2: Pressure unit; 3: Ventilation pipeline; 4: Coating liquid; 5: Sealed container;

[0030] 10: Sealing shell;

[0031] 110: accommodating space; 111: bottom wall;

[0032] 120: sealing port; 121: sealing block;

[0033] 130: Clear the hatch;

[0034] 20: Pressure relief mechanism;

[0035] 210: triggering member; 211: pressure sensor;

[0036] 212: deposition part; 213: replacement pad;

[0037] 220: switch member; 230: wire;

[0038] 30:Fix the bracket. DETAILED DESCRIPTION

[0039] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0040] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0041] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0043] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0044] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] Example

[0046] A pressure relief assembly for a capillary chromatographic column coating device is provided, such as Figure 1 and Figure 2As shown, it includes a gas chromatography column coating device, which includes a pressure unit 2, including: a sealed shell 10, a containing space 110 is formed inside the sealed shell 10, and a sealing port 120 is provided on the outer peripheral wall of the sealed shell 10, the sealing port 120 is communicated with the containing space 110, and the sealing port 120 is used for the gas chromatography column 1 to pass through from the outside of the sealed shell 10; a pressure relief mechanism 20, the pressure relief mechanism 20 includes a trigger component 210 and a switch component 220, the trigger component 210 is arranged in the containing space 110 and located at the lower part of the containing space 110, the trigger component 210 is electrically connected to the switch component 220, and the switch component 220 is used to control the pressure unit 2 to be opened or closed; the trigger component 210 includes a pressure sensor 211, when the coating liquid flows out of the gas chromatography column 1, the coating liquid flow applies pressure to the pressure sensor 211; and when the coating liquid 4 accumulates on the pressure sensor 211 and reaches a weight threshold, the pressure unit 2 is closed.

[0047] Specifically, one end of the gas chromatography column 1 passes through the sealing port 120 and is contained in the containing space 110. When the coating liquid 4 flows out from one end of the gas chromatography column 1 and falls into the containing space 110, the coating liquid 4 falls into the sealing shell 10 and then falls onto the trigger component 210 located at the lower part of the containing space 110. When the starting condition of the trigger mechanism is reached, the switch component 220 is controlled to close the pressure unit 2.

[0048] Specifically, the pressure sensor 211 can be a resistive or magnetic sensor, for example, a S17-30A sensor from IC Sensors. The switch component 220 is an electrically controlled valve, which can be installed on the pressure unit 2 of the capillary chromatographic column coating device and the vent line 3 of the sealed container 5. After the switch component 220 disconnects the vent line 3, the sealed container 5 no longer pressurizes the gas chromatographic column 1 to pressurize the coating liquid 4.

[0049] The coating liquid 4 of the gas chromatography column 1 needs to continue to flow out about 1 ml after overflowing, which can avoid bubbles in the gas chromatography column tube, and can also form droplets at the outflow end to prevent the inside of the gas chromatography column tube from being polluted by external air. The pressure sensor 211 can be used to set the accumulated outflow of the coating liquid 4 to reach a certain weight before stopping the coating. Depending on the coating liquid, 1 ml of the coating liquid weighs about 1-2 g, and the weight threshold can be set at 1-2 g, or it can be set according to the needs of the experimental design.

[0050] When in use, one end of the capillary chromatographic column is inserted into the sealed shell 10. When the coating liquid 4 flows out of the gas chromatographic column 1, it can directly enter the sealed shell 10. The triggering member 210 in the sealed shell 10 is triggered by the coating liquid 4 to start the switch member 220. The switch member 220 closes the gas supply of the pressure unit 2, and the pressure of the sealed container 5 is relieved to no longer push the coating liquid into the gas chromatographic column 1, and the coating operation stops. The coating liquid 4 falls on the pressure sensor 211, and the switch member 220 can be triggered in time according to the weight of the falling coating liquid 4 to close the pressure unit 2 in time. On the one hand, the coating liquid 4 is effectively prevented from volatilizing, and on the other hand, the pressure is maintained to prevent the external air from contacting the coating liquid 4 in the gas chromatographic column 1, and the pressure unit 2 can be closed in time to stop the coating process. The problem of easy volatilization and poisoning after the coating liquid 4 overflows in the prior art is solved. In addition, the coating liquid 4 of the gas chromatographic column 1 needs to continue to flow out about 1 ml after overflowing, which can avoid the appearance of bubbles in the gas chromatographic column tube, and can also form droplets at the outflow end to prevent the gas chromatographic column tube from being polluted by external air.

[0051] According to another specific embodiment of the present invention, a pressure relief component for a capillary chromatographic column coating device disclosed in an embodiment of the present invention is as follows: Figure 1 and Figure 2 As shown, the switch component 220 is connected to the pressure sensor 211 via a wire 230 , and one end of the wire 230 is electrically connected to the pressure sensor 211 and is detachably fixedly connected.

[0052] Specifically, the detachable fixed connection method may be a magnetic connection or a snap connection.

[0053] By adopting the above solution, the position of the sealing shell 10 can be easily changed.

[0054] According to another specific embodiment of the present invention, a pressure relief component for a capillary chromatographic column coating device disclosed in an embodiment of the present invention is as follows: Figure 1 and Figure 2 As shown, a cleaning door 130 is provided on the sealed shell 10, and the cleaning door 130 is used to control the communication between the accommodating space 110 and the outside.

[0055] Specifically, the cleaning door 130 is sealed with the sealing shell 10 and is sealed by, for example, a sealing strip or a sealing ring.

[0056] With the above solution, after a period of use, a layer of polymer fixed phase will accumulate in the sealed shell 10 due to the coating liquid 4 . After installing the cleaning door 130 , the door can be opened to clean the containing space 110 to maintain the accuracy of the pressure sensor 211 .

[0057] According to another specific embodiment of the present invention, a pressure relief component for a capillary chromatographic column coating device disclosed in an embodiment of the present invention is as follows: Figure 1 and Figure 2 As shown, the trigger component 210 further includes a deposition portion 212 , which is disposed above the pressure sensor 211 . A replacement pad 213 is disposed on the deposition portion 212 , and the replacement pad 213 is detachably connected to the top wall of the deposition portion 212 .

[0058] Specifically, the deposition part 212 is arranged above the trigger member 210 in the accommodation space 110 to protect the pressure sensor 211. When the coating liquid 4 drops, it directly falls on the deposition part 212. In order to better accommodate the coating liquid 4, a groove can be provided on the top wall of the deposition part 212. In addition, a card slot can be provided on the deposition part 212, and the replacement pad 213 can be inserted into the card slot.

[0059] It should be understood that the replacement pad 213 can be a glass sheet, a plastic sheet, or a filter paper sheet, and those skilled in the art can choose at their own discretion.

[0060] With the above solution, the coating liquid 4 can drip and fall onto the replacement sheet for easy cleaning and replacement. The deposition portion 212 is used to accommodate the dripping coating liquid 4 to protect the pressure sensor 211 .

[0061] According to another specific embodiment of the present invention, a pressure relief component for a capillary chromatographic column coating device disclosed in an embodiment of the present invention is as follows: Figure 1 and Figure 2 As shown, the sealed shell 10 has a bottom wall 111, which is a cone with its apex pointing vertically downward. An accommodating cavity is formed inside the conical bottom wall 111, and the pressure sensor 211 and the deposition portion 212 are arranged at the bottom of the accommodating cavity.

[0062] With the above solution, the conical bottom wall 111 is conducive to the enrichment of the dripping coating liquid 4. The enriched coating liquid 4 reacts more sensitively on the pressure sensor 211, and the size of the deposition part 212 can also be reduced for easy cleaning.

[0063] According to another specific embodiment of the present invention, a pressure relief component for a capillary chromatographic column coating device disclosed in an embodiment of the present invention is as follows: Figure 1 and Figure 2 As shown, a fixing bracket 30 is disposed at the lower end of the sealing shell 10 .

[0064] By adopting the above solution, the stability of the sealing shell 10 when placed can be improved.

[0065] According to another specific embodiment of the present invention, a pressure relief component for a capillary chromatographic column coating device disclosed in an embodiment of the present invention is as follows: Figure 1 and Figure 2As shown, a sealing block 121 is disposed in the sealing port 120 , and one end of the gas chromatography column 1 passes through the sealing block 121 and is accommodated in the accommodation space 110 .

[0066] Specifically, the sealing block 121 can be made of rubber material, and one end of the gas chromatography column 1 directly pierces the rubber and is inserted into the sealing shell 10 .

[0067] The above solution can ensure the sealing performance of the sealing port 120 and ensure that one end of the chromatographic column is squeezed and clamped by the sealing block 121 after insertion to play a fixing role.

[0068] According to another specific embodiment of the present invention, a pressure relief component for a capillary chromatographic column coating device disclosed in an embodiment of the present invention is as follows: Figure 1 and Figure 2 As shown, the outer wall of the sealing shell 10 is made of transparent material.

[0069] Specifically, the transparent material may be glass or polymer resin.

[0070] By adopting the above solution, it is convenient for operators to observe the sealing shell 10 from the outside.

[0071] According to another specific embodiment of the present invention, a pressure relief assembly for a capillary chromatographic column coating device disclosed in an embodiment of the present invention further includes an alarm, and the alarm is electrically connected to the trigger component 210 .

[0072] Specifically, the alarm can be a horn or a warning light, which is connected in parallel or series with the switch component 220 and is activated when the trigger component 210 reaches the trigger condition. The specific circuit structure can be selected according to design requirements and is not specifically limited in this embodiment.

[0073] By adopting the above solution, the triggering component 210 starts the alarm response, which can prompt the operator that the coating process has been completed and the blocking operation can be carried out in time.

[0074] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A pressure relief assembly for a capillary chromatographic column coating device, characterized in that: include: A sealing shell, wherein a containing space is formed inside the sealing shell, and a sealing port is provided on the outer peripheral wall of the sealing shell, wherein the sealing port is communicated with the containing space, and the sealing port is used for a gas chromatography column to pass through the outside of the sealing shell; A pressure relief mechanism, the pressure relief mechanism comprising a trigger component and a switch component, the trigger component is arranged in the accommodating space and located at the lower part of the accommodating space, the trigger component is electrically connected to the switch component, and the switch component is used to control the pressure unit of the capillary chromatographic column coating device to be turned on or off; wherein, The triggering member includes a pressure sensor. When the coating liquid flows out of the gas chromatography column, the coating liquid applies pressure to the pressure sensor. When the coating liquid accumulates on the pressure sensor and reaches a weight threshold, the pressure unit is closed. The trigger component also includes a deposition part, which is arranged above the pressure sensor. A replacement pad is arranged on the deposition part, and the replacement pad is detachably connected to the top wall of the deposition part. The deposition part is provided with a slot, and the replacement pad is inserted into the slot.

2. The pressure relief assembly for a capillary chromatographic column coating device according to claim 1, characterized in that: The switch component is connected to the pressure sensor via an electric wire, and one end of the electric wire is electrically connected to the pressure sensor and is detachably fixedly connected.

3. The pressure relief assembly for a capillary chromatographic column coating device according to claim 2, characterized in that: The sealing shell is provided with a cleaning door which is sealed with the sealing shell, and the cleaning door is used to control the communication between the accommodating space and the outside.

4. The pressure relief assembly for a capillary chromatographic column coating device according to claim 3, characterized in that: The sealing shell has a bottom wall, and the bottom wall is in the shape of a cone with its apex pointing vertically downward. A receiving cavity is formed inside the cone-shaped bottom wall, and the pressure sensor and the deposition part are arranged at the bottom of the receiving cavity.

5. The pressure relief assembly for a capillary chromatographic column coating device according to claim 4, characterized in that: A fixing bracket is arranged at the lower end of the sealing shell.

6. The pressure relief assembly for a capillary chromatographic column coating device according to any one of claims 1 to 5, characterized in that: A sealing block is arranged in the sealing port, and one end of the gas chromatography column passes through the sealing block and is accommodated in the accommodation space.

7. The pressure relief assembly for a capillary chromatographic column coating device according to claim 6, characterized in that: The outer wall of the sealing shell is made of transparent material.

8. The pressure relief assembly for a capillary chromatographic column coating device according to claim 7, characterized in that: Also included is an alarm, which is electrically connected to the triggering component.

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