Interface device of gas chromatograph-mass spectrometer

Abstract

The utility model provides an interface device of a gas chromatograph-mass spectrometer, which comprises a multi-path interface main body, a pulse electromagnetic valve is connected onto the multi-path interface main body, a plurality of joint seats are mounted on the surface of the multi-path interface main body, a mounting opening groove is formed in the middle of each joint seat, a sealing ring is mounted at the inner bottom of each mounting opening groove, and a gas chromatograph-mass spectrometer is mounted in each sealing ring. A gasket is arranged on the surface of the sealing ring, a locking reed is arranged on the surface of the gasket, the top of the installation opening groove is of an open structure and penetrates through the top of the connector base, a holder is installed at the open position of the top of the installation opening groove, and a release button is movably arranged in the holder. According to the utility model, the plurality of joint seats are arranged on the main body of the multi-path interface, and the pluggable mounting opening grooves are formed in the joint seats, so that the joint pipes can be clamped by using the locking reeds in the mounting opening grooves, and the joint pipes are sealed by using the sealing rings, and the fixing and sealing functions are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas chromatography - mass spectrometry (GC - MS) instruments, and specifically relates to an interface device for a gas chromatography - mass spectrometry instrument. Background Art

[0002] A gas chromatography - mass spectrometry instrument, also known as a GC - MS instrument, combines the characteristics of gas chromatography and mass spectrometry and can identify different substance components in a sample. It is mainly used for the separation and detection of complex compounds in many fields such as industrial detection, food safety, and environmental protection. A GC - MS instrument usually includes a chromatography module and a mass spectrometry module. In the working mode of the combination of the chromatography module and the mass spectrometry module, a concentration and adsorption device will first collect and concentrate the sample gas, and then the sample gas enters the chromatographic column of the chromatography module for separation, and each separated component gradually enters the mass spectrometry module for mass analysis.

[0003] Gas chromatography - mass spectrometry instruments are widely used in the environmental protection industry, electronics industry, textile industry, petrochemical industry, essence and spice industry, pharmaceutical industry, agriculture, and food safety and other fields, and can analyze organic pollutants in the environment; analyze agricultural residues, veterinary residues, and drug residues; detect harmful substances in the textile industry, etc.

[0004] Currently, some manufacturers also produce some portable GC - MS instruments. In the event of a sudden environmental pollution incident, detection personnel often use portable GC - MS instruments to quickly detect the pollution site, so that the detection personnel can quickly obtain the detection results, and thus deal with the incident in a timely manner to avoid more serious harm caused by delayed handling. The working mode of the portable GC - MS instrument not only includes the above - mentioned combined mode, but also includes a quick - check mode (also known as a single - mass spectrometry analysis mode). Since the detection speed of the quick - check mode is faster, it is often used in on - site detection;

[0005] When performing detection, quick insertion and removal need to be achieved at the detection interface. Currently, when connecting a GC - MS instrument, a fixing tool is needed for connection, and the back - and - forth insertion and removal will also affect the service life and sensitivity of the device.

[0006] In summary, the utility model provides an interface device for a gas chromatography - mass spectrometry instrument to solve the above problems. Summary of the Utility Model

[0007] In order to solve the above - mentioned technical problems, the utility model provides an interface device for a gas chromatography - mass spectrometry instrument to solve the problems in the prior art that a fixing tool is needed for connection, and the back - and - forth insertion and removal will also affect the service life and sensitivity of the device, etc.

[0008] An interface device for a gas chromatography - mass spectrometry instrument, comprising a multi - path interface body, a pulse solenoid valve is connected to the multi - path interface body, a plurality of connector seats are installed on the surface of the multi - path interface body, an installation opening groove is provided in the middle of the connector seat, a sealing ring is installed at the bottom of the installation opening groove, a washer is arranged on the surface of the sealing ring, a locking spring piece is arranged on the surface of the washer, the top of the installation opening groove is of an open structure and penetrates through the top of the connector seat, a retaining frame is installed at the open top of the installation opening groove, a release button is movably arranged in the retaining frame, one end of the release button is inserted into the retaining frame and is movably in contact with the surface of the locking spring piece.

[0009] Further, the connector seats are arranged along the outer wall of the multi - path interface body, an interface hole is provided in the middle of the connector seat, and the middle of the sealing ring is aligned with the interface hole.

[0010] Further, the locking spring piece is of a ring structure, the locking spring piece is in contact with the surface of the washer, the side of the locking spring piece away from the washer is in contact with the bottom of the retaining frame, the locking spring piece includes a plurality of spring - piece teeth, and one end of the spring - piece teeth is arranged in the ring middle of the locking spring piece.

[0011] Further, the end of the retaining frame inserted into the connector seat is closely attached to the inner wall of the installation opening groove, and a through - hole is provided in the middle of the retaining frame.

[0012] Further, one end of the release button passes through the through - hole, and the end of the release button passing through the through - hole is in contact with the spring - piece teeth.

[0013] Further, the middle of the washer is aligned with the middle of the sealing ring, and the washer is in contact with the sealing ring.

[0014] Further, a main joint is connected to one end of the pulse solenoid valve.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. By arranging a plurality of connector seats on the main body of the multi - path interface and providing a pluggable installation opening groove in the connector seat, the utility model can use the locking spring piece in the installation opening groove to clamp the connector tube, and use the sealing ring to seal the connector tube, playing the functions of fixation and sealing.

[0017] 2. By arranging a plurality of spring - piece teeth on the locking spring piece, the utility model can use the spring - piece teeth on the locking spring piece to reversely clamp and fasten the connector tube to prevent the connector tube from detaching from the connector seat. The reverse clamping and fastening is more stable. By setting the release button, the angle of the spring - piece teeth can be adjusted, which helps to quickly disassemble the connector tube, and it is more sensitive and fast during plugging and unplugging. Description of the Drawings

[0018] Figure 1 is the three-dimensional view of the present utility model Figure 1 ;

[0019] Figure 2 is the three-dimensional view of the present utility model Figure 2 ;

[0020] Figure 3 is the enlarged view of part A in the present utility model Figure 2 ;

[0021] Figure 4 is the exploded view of the joint seat of the present utility model

[0022] Figure 5 is the three-dimensional view of the locking spring piece of the present utility model

[0023] In the figure:

[0024] 1. Multi-channel interface main body; 2. Joint seat; 3. Pulse solenoid valve; 4. Sealing ring; 5. Washer; 6. Locking spring piece; 7. Retainer; 8. Release button; 9. Spring piece tooth Specific embodiments

[0025] The following further describes in detail the embodiments of the present utility model with reference to the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model

[0026] As Figures 1-5 shown, the present utility model provides an interface device for a gas chromatography-mass spectrometry instrument, including a multi-channel interface main body 1, a pulse solenoid valve 3 is connected to the multi-channel interface main body 1, a plurality of joint seats 2 are installed on the surface of the multi-channel interface main body 1, an installation opening groove is formed in the middle of the joint seat 2, a sealing ring 4 is installed at the bottom of the installation opening groove, a washer 5 is arranged on the surface of the sealing ring 4, a locking spring piece 6 is arranged on the surface of the washer 5, the top of the installation opening groove is an open structure and penetrates through the top of the joint seat 2, a retainer 7 is installed at the open top of the installation opening groove, a release button 8 is movably arranged in the retainer 7, and one end of the release button 8 is inserted into the retainer 7 and is in movable contact with the surface of the locking spring piece 6

[0027] As an embodiment of the present utility model, the joint seat 2 is arranged along the outer wall of the multi-channel interface main body 1, an interface hole is formed in the middle of the joint seat 2, and the middle of the sealing ring 4 is aligned with the interface hole

[0028] As an embodiment of the present utility model, the locking spring piece 6 is of an annular structure, the locking spring piece 6 is in contact with the surface of the washer 5, the side of the locking spring piece 6 away from the washer 5 is in contact with the bottom of the retainer 7, the locking spring piece 6 includes a plurality of spring piece teeth 9, and one end of the spring piece tooth 9 is arranged in the annular middle of the locking spring piece 6

[0029] As an embodiment of the present utility model, one end of the cage 7 inserted into the joint seat 2 is in close contact with the inner wall of the mounting port groove, and a through hole is provided in the middle of the cage 7.

[0030] As an embodiment of the present utility model, one end of the release button 8 passes through the through hole, and the end of the release button 8 passing through the through hole is in contact with the reed tooth 9.

[0031] As an embodiment of the present utility model, the middle of the washer 5 is aligned with the middle of the sealing ring 4, and the washer 5 is in contact with the sealing ring 4.

[0032] As an embodiment of the present utility model, a master joint is connected to one end of the pulse solenoid valve 3.

[0033] Specific working principle:

[0034] First, the joint pipe is inserted into the joint seat 2 from the middle of the release button 8 and contacts the inner wall of the sealing ring 4 to realize the connection at the interface. Then, after the joint pipe is inserted, the reed tooth 9 is inverted and grabs the outer wall of the joint pipe to realize the fixation of the joint pipe.

[0035] When pulling out, press the release button 8 inward. The release button 8 presses the reed tooth 9, bends one end of the reed tooth 9, and then makes the reed tooth 9 not contact the joint pipe, so that the joint pipe can be freely pulled out to realize fast plugging and unplugging work.

[0036] By arranging a plurality of reed teeth on the locking reed in the present utility model, the reed teeth on the locking reed can be used to hang and clamp the joint pipe upside down, preventing the joint pipe from detaching from the joint seat. The upside-down clamping is more stable. By arranging the release button, the angle of the reed tooth can be adjusted, which helps to quickly disassemble the joint pipe. When plugging and unplugging, it is more sensitive and fast.

[0037] Finally, it should be noted that in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] The embodiments of the present utility model are given for the purposes of illustration and description. Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An interface device for a gas chromatograph-mass spectrometer, comprising a multi-channel interface body (1), characterized in that: The multi-way interface body (1) is connected to a pulse solenoid valve (3), and a plurality of connector seats (2) are installed on the surface of the multi-way interface body (1). A mounting groove is provided in the middle of the connector seat (2), and a sealing ring (4) is installed at the bottom of the mounting groove. A gasket (5) is provided on the surface of the sealing ring (4), and a locking spring (6) is provided on the surface of the gasket (5). The top of the mounting groove is an open structure and passes through the top of the connector seat (2). A retaining frame (7) is installed at the open top of the mounting groove, and a release button (8) is movably provided in the retaining frame (7). One end of the release button (8) is inserted into the retaining frame (7) and movably contacts the surface of the locking spring (6).

2. The interface device for gas chromatography-mass spectrometry according to claim 1, characterized in that: The connector seat (2) is arranged along the outer wall of the multi-way connector body (1); an interface hole is arranged in the middle of the connector seat (2); and the middle of the sealing ring (4) is aligned with the interface hole.

3. The interface device for gas chromatography-mass spectrometry according to claim 1, characterized in that: The locking spring (6) is an annular structure. The locking spring (6) contacts the surface of the washer (5). The side of the locking spring (6) away from the washer (5) contacts the bottom of the retaining frame (7). The locking spring (6) includes a plurality of spring teeth (9). One end of the spring teeth (9) is provided in the annular middle part of the locking spring (6).

4. The interface device for gas chromatography-mass spectrometry according to claim 1, characterized in that: One end of the retaining frame (7) inserted into the joint seat (2) is in close contact with the inner wall of the mounting slot, and a through hole is provided in the middle of the retaining frame (7).

5. The interface device for gas chromatography-mass spectrometry as claimed in claim 3 or 4, characterized in that: One end of the release button (8) passes through the through hole, and the end of the release button (8) passing through the through hole contacts the reed latch tooth (9).

6. The interface device for gas chromatography-mass spectrometry according to claim 1, characterized in that: The middle of the gasket (5) is aligned with the middle of the sealing ring (4), and the gasket (5) is in contact with the sealing ring (4).

7. The interface device for gas chromatography-mass spectrometry according to claim 1, characterized in that: One end of the pulse solenoid valve (3) is connected to a main connector.

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