Quick release type ion source spray needle

Abstract

The invention relates to the technical field of ion source spray needles, in particular to a quick release type ion source spray needle which comprises an ion source support, an electrospray ion source fixedly installed at the bottom, a quick installer fixedly installed on the outer side of the bottom and an installation connector fixedly installed at the bottom, and a spray needle assembly is inserted into the installation connector. The spray needle assembly is mounted at the bottom of an electrospray ion source through a quick mounting device. When the spray needle body needs to be dismantled, the hand-operated grab bar can be pushed by manually pulling the hand-operated grab ball to drive the quick-release linkage frame body to move downwards, the displacement block slides in the guide rail for guiding to enable the quick-release linkage frame body to move downwards stably, and the bottom inclined face of the quick-release linkage frame body makes contact with the inner end arc face of the guide frame body for guiding; the guide frame body is opened to enable the two sides of the guide frame body to slide, the sliding block is pushed to extrude the limiting spring, the clamping block at the end of the limiting frame is separated from the clamping groove, the spray needle connector loses limitation, and the spray needle assembly is rapidly disassembled.

Description

Technical Field

[0001] This application relates to the field of ion source spray needle technology, and in particular to a quick-release ion source spray needle. Background Technology

[0002] Ion source spray needles play a crucial role in analytical techniques such as ion source liquid chromatography. They are typically long, thin metal needles with finely machined and treated tips. During operation, the sample solution passes through the spray needle and is sprayed as charged microdroplets under high voltage. These charged droplets undergo a series of physical and chemical processes to ionize the sample, facilitating subsequent separation and detection. The design and performance of the ion source spray needle directly affect ionization efficiency, spray stability, and the accuracy and reproducibility of the final analytical results. Its material, shape, size, and surface treatment all have a significant impact on the spray effect. Different types of analytical needs may require spray needles of different specifications and characteristics to achieve optimal analytical performance. A search revealed Chinese Patent Publication No. CN117558612A, which discloses an ion source spray needle that is easy to replace and maintain. The needle includes an ion source bracket, an electrospray ion source fixedly mounted on the inner side of the bracket, and an ion source connecting tube fixedly mounted on the top of the electrospray ion source. This application utilizes a drive mechanism, a limiting mechanism, and a linkage mechanism to assist in the rapid disassembly and assembly of the spray needle body. The entire assembly and disassembly can be completed automatically and quickly without manual twisting. Compared to the bolt-mounted installation method of existing technologies, this device is much more convenient to assemble and disassemble, and there is no need to worry about bolt stripping. The overall service life is also longer. Furthermore, during disassembly and assembly, the spray needle body can be quickly pulled out from the bottom of the electrospray ion source to complete the disassembly and assembly. The overall disassembly and assembly is extremely convenient, saving maintenance time during mass spectrometry detection and improving the efficiency of the detection work. During application, the device uses a motor-driven lead screw to activate a bottom limiting device for linkage and limiting, thereby assisting in the installation of the spray needle. While this method enables quick disassembly and secure installation, it still has certain defects and shortcomings in practical applications. First, during application, additional drive structures such as motors and lead screws must be added to assist in installation. However, adding these structures to the ion source makes the production and processing of the electrospray ion source more complex. At the same time, the addition of motor and lead screw structures significantly increases the operating cost. In addition, subsequent maintenance and repair of the motor will also increase operating costs. Moreover, it requires power to assist in disassembly and assembly during installation, but the equipment is usually powered off during maintenance or assembly. If quick installation is required, a special power-on operation is necessary. It is evident that this method brings certain inconveniences in sales, assembly, and maintenance. Therefore, it is necessary to improve its design. Summary of the Invention

[0003] To improve ease of maintenance, this application provides a quick-release ion source spray needle.

[0004] This application provides a quick-release ion source spray needle, which adopts the following technical solution: it includes an ion source bracket, an electrospray ion source is fixedly installed at the bottom of the ion source bracket, a quick installer is fixedly installed on the outer side of the bottom of the electrospray ion source, an installation connector is fixedly installed at the bottom of the electrospray ion source, a spray needle assembly is inserted into the installation connector, and the spray needle assembly is installed at the bottom of the electrospray ion source by quick installation. The quick installer includes a linkage mechanism and a side rail frame. The linkage mechanism is fixedly installed on one side of the electrospray ion source, and the side rail frame is fixedly installed on both sides of the bottom of the electrospray ion source. A limiting mechanism is fixedly installed inside the side rail frame, and the spray needle assembly is installed at the bottom of the electrospray ion source through the limiting mechanism.

[0005] Optionally, a mounting plate is fixedly installed on the top of the ion source support, and mounting holes are equally spaced at the bottom outer end of the mounting plate, and the mounting holes are countersunk holes.

[0006] Optionally, an ion source connecting pipe is fixedly installed on the top of the electrospray ion source, and a threaded joint is fixedly installed on the top of the ion source connecting pipe through the mounting plate.

[0007] Optionally, the limiting mechanism includes a limiting spring and a protrusion. The limiting spring is fixedly installed inside the side rail frame. A slider is fixedly installed at the end of the limiting spring. A limiting frame is fixedly installed at the bottom of the slider. The protrusion is fixedly installed on both sides of the upper end of the spray needle assembly. A snap-fit ​​groove is opened on the outer side of the protrusion. A snap-fit ​​block is fixedly installed at the bottom of the limiting frame. The snap-fit ​​block is inserted into the snap-fit ​​groove.

[0008] Optionally, the linkage mechanism includes a guide frame and a guide rail. The guide rail is fixedly installed on one side of the electrospray ion source, and the guide frame is fixedly installed on the side of the slider near the guide rail. A displacement block is slidably connected inside the guide rail, and a quick-release linkage frame is fixedly installed on the front of the displacement block. The bottom of the quick-release linkage frame is fitted and connected to the inner side of the guide frame.

[0009] Optionally, the quick-release linkage frame is arrow-shaped, the inner end of the guide frame is arc-shaped, and the bottom slope of the quick-release linkage frame and the arc surface of the inner end of the guide frame are fitted together.

[0010] Optionally, a hand-operated handle is fixedly installed on the upper end of the quick-release linkage frame on the side away from the electrospray ion source, and a hand-operated handle ball is fixedly connected to the outer end of the hand-operated handle.

[0011] Optionally, the overall cross-sectional shape of the snap-fit ​​block is a right-angled trapezoid, and the inclined surface of the snap-fit ​​block is located at the bottom inner end.

[0012] Optionally, the spray needle assembly includes a spray needle connector, which is inserted into the inner side of the mounting connector. Both sides of the spray needle connector are fixedly connected to the protrusion. A threaded groove is provided at the bottom of the spray needle connector. A threaded mounting tube is threadedly connected to the inner side of the threaded groove. A sealing cover is fixedly installed at the bottom of the threaded mounting tube. The spray needle body is fixedly installed at the bottom of the sealing cover.

[0013] Optionally, the upper end of the sealing cover is fixedly connected with anti-slip protrusions at equal intervals, and the top of the sealing cover and the top of the spray needle connector are fixedly connected with sealing gaskets. The sealing gaskets at the top of the spray needle connector are fitted and connected to the top of the spray needle body, and the sealing gaskets at the top of the spray needle connector are fitted and connected to the mounting connector.

[0014] In summary, this application includes the following beneficial technical effects: By setting up a quick installer, the spray needle assembly is inserted into the installation connector during installation. The top of the spray needle connector contacts the inclined surface of the snap-fit ​​block, causing the limiting frame to move outward and the limiting spring to extend. After the spray needle connector is inserted, the limiting spring returns to its original position when the snap-fit ​​block contacts the snap-fit ​​groove, causing the limiting frame to move inward. The snap-fit ​​block inserts into the snap-fit ​​groove, completing the snap-fit ​​installation. No motor drive is required during use; simply push the spray needle body upward to insert the connector. The snap-fit ​​is quickly completed by the snap-fit ​​block and snap-fit ​​groove, making the installation of the spray needle body convenient and fast.

[0015] The linkage mechanism, in conjunction with the limiting mechanism, allows for the removal of the spray needle body. When the spray needle body needs to be removed, manually pulling the handle ball pushes the handle lever, causing the quick-release linkage frame to move downwards. The displacement block slides within the guide rail, guiding the quick-release linkage frame to move steadily downwards. The inclined surface at the bottom of the quick-release linkage frame contacts the inner arc surface of the guide frame, opening the guide frame and causing it to slide and displace on both sides. This pushes the slider to compress the limiting spring, causing the locking block at the end of the limiting frame to disengage from the locking groove. The spray needle connector loses its limit, enabling rapid removal of the spray needle assembly. After the spray needle assembly and connector are removed, the equipment can resume operation. The removed components can be further disassembled and reassembled; the anti-slip protrusion can be used to twist the threaded installation tube for removal. This allows for quick replacement of the body and connector, avoiding waste. When using the spray needle assembly, the sealing cover and sealing gasket improve sealing performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram of the rear view structure in an embodiment of this application; Figure 3 This is a bottom-view structural diagram of an embodiment of this application; Figure 4 This is a top-view structural diagram of the overall disassembled state in an embodiment of this application; Figure 5 This is a top view of the overall disassembled structure in an embodiment of this application; Figure 6 This is a schematic diagram of the spray needle assembly structure in an embodiment of this application; Figure 7 This is a schematic diagram of the limiting mechanism structure in an embodiment of this application; Figure 8 This is a schematic diagram of the quick-release linkage frame structure in the embodiments of this application.

[0017] Reference numerals: 1. Ion source bracket; 2. Electrospray ion source; 3. Quick installer; 31. Linkage mechanism; 311. Guide frame; 312. Guide rail; 313. Displacement block; 314. Quick-release linkage frame; 315. Hand-operated handle bar; 316. Hand-operated handle ball; 32. Side rail frame; 33. Limiting mechanism; 331. Limiting spring; 332. Protrusion; 333. Slider; 334. Limiting frame; 335. Snap-fit ​​block; 336. Snap-fit ​​groove; 4. Mounting connector; 5. Spray needle assembly; 51. Spray needle connector; 52. Threaded groove; 53. Spray needle body; 54. Threaded mounting tube; 55. Sealing cover; 56. Anti-slip protrusion; 6. Mounting plate; 7. Mounting hole; 8. Ion source connecting tube; 9. Threaded connector. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0019] This application discloses a quick-release ion source spray needle. For example... Figure 1-8 As shown, it includes an ion source bracket 1, an electrospray ion source 2 fixedly installed at the bottom of the ion source bracket 1, a quick installer 3 fixedly installed on the outer side of the bottom of the electrospray ion source 2, an installation connector 4 fixedly installed at the bottom of the electrospray ion source 2, a spray needle assembly 5 inserted inside the installation connector 4, and the spray needle assembly 5 is installed at the bottom of the electrospray ion source 2 by quick installation.

[0020] The quick installer 3 includes a linkage mechanism 31 and a side rail frame 32. The linkage mechanism 31 is fixedly installed on one side of the electrospray ion source 2, and the side rail frame 32 is fixedly installed on both sides of the bottom of the electrospray ion source 2. A limiting mechanism 33 is fixedly installed inside the side rail frame 32. The spray needle assembly 5 is installed on the bottom of the electrospray ion source 2 through the limiting mechanism 33. The ion source bracket 1 provides stable support for the entire device. The electrospray ion source 2 is fixed on the bottom of the ion source bracket 1. The quick installer 3 on the outer side of its bottom plays a key role. The linkage mechanism 31 in the quick installer 3 can realize efficient operation linkage, and the side rail frame 32 provides a stable installation base for the internal limiting mechanism 33. Through the limiting mechanism 33, the spray needle assembly 5 can be conveniently and securely installed on the bottom of the electrospray ion source 2, realizing quick installation and removal without complicated operations and additional tools. This design not only improves the efficiency of installation and removal and reduces operation time and labor costs, but also ensures the stability and reliability of the spray needle assembly 5 during operation, making the entire ion source spray needle more convenient, efficient and stable in use.

[0021] Please refer to Figures 1-5 An ion source bracket 1 has a mounting plate 6 fixedly installed on its top. The bottom outer end of the mounting plate 6 has evenly spaced mounting holes 7, which are countersunk. An ion source connecting pipe 8 is fixedly installed on the top of the electrospray ion source 2. The top of the ion source connecting pipe 8 passes through the mounting plate 6 and is fixedly fitted with a threaded connector 9. The mounting holes 7 at equal intervals on the bottom outer end of the mounting plate 6 are countersunk. This design makes the installation more stable and aesthetically pleasing. The ion source connecting pipe 8 at the top of the electrospray ion source 2 passes through the mounting plate 6, and the threaded connector 9 is fixedly installed on its top, enhancing the tightness and stability of the connection. The countersunk holes effectively hide the mounting screw heads, reducing the interference of protruding parts to the surrounding environment, while ensuring the stability of the installation. The cooperation between the ion source connecting pipe 8 and the threaded connector 9 makes it easy to connect the electrospray ion source 2 to equipment, which is beneficial for signal and energy transmission, reduces the risk of failure caused by loose connections, and improves the stability and reliability of the entire device.

[0022] Please refer to Figure 1-5 and Figure 7The limiting mechanism 33 includes a limiting spring 331 and a protrusion 332. The limiting spring 331 is fixedly installed inside the side rail frame 32. A slider 333 is fixedly installed at the end of the limiting spring 331. A limiting frame 334 is fixedly installed at the bottom of the slider 333. The protrusion 332 is fixedly installed on both sides of the upper end of the spray needle assembly 5. A snap-fit ​​groove 336 is opened on the outer side of the protrusion 332. A snap-fit ​​block 335 is fixedly installed at the bottom of the limiting frame 334. The snap-fit ​​block 335 is inserted into... Inside the slot 336, the linkage mechanism 31 includes a guide frame 311 and a guide rail 312. The guide rail 312 is fixedly installed on one side of the electrospray ion source 2. The guide frame 311 is fixedly installed on the side of the slider 333 near the guide rail 312. A displacement block 313 is slidably connected inside the guide rail 312. A quick-release linkage frame 314 is fixedly installed on the front of the displacement block 313. The bottom of the quick-release linkage frame 314 and the guide frame 311 are connected. The inner side of the 1 is fitted and connected. In the limiting mechanism 33, the limiting spring 331 inside the side rail frame 32 provides elastic support for the slider 333, so that the slider 333 can drive the limiting frame 334 to move flexibly. When the snap block 335 is inserted into the snap groove 336 on the outside of the protrusion 332, a stable limit is achieved, ensuring the accurate and stable position of the spray needle assembly 5. In the linkage mechanism 31, the guide rail 312 provides a precise sliding track for the displacement block 313. The fitted connection between the guide frame 311 and the quick-release linkage frame 314 achieves effective force transmission. When the quick-release linkage frame 314 moves, it can drive the slider 333 and the limiting frame 334 to move through the guide frame 311, thereby realizing the quick installation and removal of the spray needle assembly 5. The whole design makes the installation and removal of the spray needle assembly 5 both accurate and efficient, improves the convenience and reliability of operation, and also reduces the difficulty of maintenance and replacement, ensuring the normal operation of the equipment.

[0023] Please refer to Figures 1-5 and Figure 8The quick-release linkage frame 314 is arrow-shaped overall, while the inner end of the guide frame 311 is arc-shaped. The bottom slope of the quick-release linkage frame 314 and the arc surface of the inner end of the guide frame 311 are fitted together. A hand-operated handle 315 is fixedly installed on the upper end of the side of the quick-release linkage frame 314 away from the electrospray ion source 2. A hand-operated handle ball 316 is fixedly connected to the outer end of the hand-operated handle 315. The overall cross-sectional shape of the locking block 335 is a right-angled trapezoid, with the slope of the locking block 335 located at the bottom inner end. The arrow-shaped overall shape of the quick-release linkage frame 314 facilitates auxiliary guiding linkage and improves efficiency. For smooth operation, the inner end of the guide frame 311 is arc-shaped, which can perfectly fit and connect with the bottom slope of the quick-release linkage frame 314, ensuring effective force transmission and precise movement. The hand-operated handle ball 316 at the outer end of the hand-operated handle 315 facilitates manual operation by the operator, making the pushing action more convenient and comfortable. The right-angled trapezoidal cross-section of the locking block 335, especially the slope design at the bottom inner end, not only enhances the stability of the structure, but also enables smooth sliding guidance when cooperating with other components, improving the ease of disassembly and assembly of the entire device, making the disassembly and assembly process of the spray needle assembly 5 simpler, faster and more stable.

[0024] Please refer to Figures 1-6 The spray needle assembly 5 includes a spray needle connector 51, which is inserted into the inner side of the mounting connector 4. Both sides of the spray needle connector 51 are fixedly connected to protrusions 332. A threaded groove 52 is provided at the bottom of the spray needle connector 51, and a threaded mounting tube 54 is threadedly connected to the inner side of the threaded groove 52. A sealing cover 55 is fixedly installed at the bottom of the threaded mounting tube 54, and a spray needle body 53 is fixedly installed at the bottom of the sealing cover 55. Anti-slip protrusions 56 are fixedly connected at equal intervals at the upper end of the sealing cover 55. Sealing gaskets are fixedly connected to the top of the sealing cover 55 and subsequently to the top of the spray needle connector 51. The sealing gaskets at the top of the spray needle connector 51 are in close contact with the top of the spray needle body 53, and the sealing gaskets at the top of the spray needle connector 51 are in close contact with the mounting connector 4. The spray needle connector 51 is inserted into the inner side of the mounting connector 4. The fixed connection with the protrusion 332 ensures the stability of the connection. The threaded groove 52 at the bottom is threaded to the threaded mounting tube 54 for easy disassembly and maintenance. The setting of the sealing cover 55 and its fixed connection with the threaded mounting tube 54 enhance the overall sealing performance. The spray needle body 53 is connected to the threaded mounting tube 54 through the sealing cover 55, ensuring the stability of operation and facilitating quick disassembly and assembly. The anti-slip protrusions 56 at equal intervals on the upper end of the sealing cover 55 facilitate gripping and rotation during operation. The sealing gaskets on the top of the sealing cover 55 and the top of the spray needle connector 51 are respectively fitted to the top of the spray needle body 53 and the mounting connector 4, greatly improving the sealing performance, effectively preventing liquid leakage or gas ingress, ensuring the normal operation of the spray needle assembly 5, extending its service life, and improving work efficiency and quality.

[0025] The implementation principle of the quick-release ion source spray needle in this application embodiment is as follows: By setting the quick installer 3, the installation operation of this device during use becomes simpler and more efficient. During installation, the spray needle assembly 5 can be inserted upward into the interior of the mounting connector 4. During the installation process, the top of the spray needle connector 51 will contact the inclined surface at the bottom of the snap-fit ​​block 335. After the inclined surface of the snap-fit ​​block 335 is subjected to force, it will resist the limiting frame 334 and move outward. At this time, the limiting spring 331 is in an extended state. As the limiting frame 334 moves outward, the spray needle connector 51 can be smoothly inserted into the interior of the mounting connector 4. Through the mutual connection between the spray needle connector 51 and the mounting connector 4, when the snap-fit ​​block 335 contacts the snap-fit... When the slot 336 is in position, the limit spring 331 resets, thereby driving the limit frame 334 to move inward. As the limit frame 334 moves inward, it will drive the snap-fit ​​block 335 to insert into the inside of the snap-fit ​​slot 336. The snap-fit ​​block 335 and the snap-fit ​​slot 336 limit each other, thereby assisting in completing the snap-fit ​​installation of the spray needle body 53. It can be clearly seen that during its use, there is no need to set up an additional motor for driving. Simply push the spray needle body 53 upward to insert the spray needle connector 51 into the installation connector 4. Through the mutual limitation of the snap-fit ​​block 335 and the snap-fit ​​slot 336, the snap-fit ​​operation can be completed quickly and smoothly. This makes the installation of the spray needle body 53 of this device more convenient and faster. By setting up a linkage mechanism 31 in conjunction with a limiting mechanism 33, if the spray needle body 53 needs to be removed during use, the manual operation handle ball 316 can be pulled to push the manual operation handle lever 315, thereby causing the quick-release linkage frame 314 to move downward. During this process, the sliding guide action of the displacement block 313 inside the guide rail 312 ensures that the quick-release linkage frame 314 can move downward stably. During the downward movement of the quick-release linkage frame 314, the bottom slope of the quick-release linkage frame 314 will meet the guide frame. The inner end arc surface of body 311 contacts each other. The bottom slope of quick-release linkage frame 314 and the inner end arc surface of guide frame 311 can play an auxiliary guiding role. By moving quick-release linkage frame 314 downward, guide frame 311 can be opened, causing guide frame 311 to slide to both sides. When guide frame 311 slides to both sides, it will push slider 333 to squeeze limit spring 331. At the same time, during this process, the locking block 335 at the end of limit frame 334 will disengage from locking groove 336. The locking block 335 and the locking groove 336 will then disengage. When the grooves 336 separate, the spray needle connector 51 loses its limiting position, allowing for the rapid disassembly of the spray needle assembly 5 and its spray needle body 53. It is evident that the overall disassembly and assembly process of this device is more convenient and faster. By setting up the spray needle assembly 5, the device can be put back into operation immediately after the spray needle connector 51 is removed. The disassembled spray needle assembly 5 can then be further disassembled and reassembled. Simply hold the anti-slip protrusion 56 and twist the threaded mounting tube 54; the threaded mounting tube 54 will then detach from the threaded groove 52, allowing the spray needle assembly 5 to be removed. It is clear that this device not only allows for the rapid disassembly of the spray needle assembly 5 but also enables the rapid replacement of the spray needle body 53 and the spray needle connector 51, effectively avoiding the waste caused by replacing the entire spray needle connector 51. Furthermore, during the application of the spray needle assembly 5, the sealing cover 55, in conjunction with the sealing gasket, significantly improves the sealing performance of the spray needle body 53 and the mounting structure after installation.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick-release ion source spray needle, comprising an ion source bracket (1), an electro-spray ion source (2) fixedly mounted at the bottom of the ion source bracket (1), a quick installer (3) fixedly mounted on the outer side of the bottom of the electro-spray ion source (2), an installation connector (4) fixedly mounted at the bottom of the electro-spray ion source (2), a spray needle assembly (5) inserted inside the installation connector (4), and the spray needle assembly (5) being installed at the bottom of the electro-spray ion source (2) by quick installation; The quick installer (3) includes a linkage mechanism (31) and a side rail frame (32). The linkage mechanism (31) is fixedly installed on one side of the electrospray ion source (2), and the side rail frame (32) is fixedly installed on both sides of the bottom of the electrospray ion source (2). A limiting mechanism (33) is fixedly installed inside the side rail frame (32), and the spray needle assembly (5) is installed on the bottom of the electrospray ion source (2) through the limiting mechanism (33).

2. The quick-release ion source spray needle according to claim 1, characterized in that: The top of the ion source support (1) is fixedly mounted with a mounting plate (6), and the bottom outer end of the mounting plate (6) is provided with mounting holes (7) at equal intervals, and the mounting holes (7) are countersunk holes.

3. The quick-release ion source spray needle according to claim 2, characterized in that: An ion source connecting pipe (8) is fixedly installed on the top of the electrospray ion source (2), and a threaded joint (9) is fixedly installed on the top of the ion source connecting pipe (8) through the mounting plate (6).

4. The quick-release ion source spray needle according to claim 1, characterized in that: The limiting mechanism (33) includes a limiting spring (331) and a protrusion (332). The limiting spring (331) is fixedly installed inside the side rail frame (32). A slider (333) is fixedly installed at the end of the limiting spring (331). A limiting frame (334) is fixedly installed at the bottom of the slider (333). The protrusion (332) is fixedly installed on both sides of the upper end of the spray needle assembly (5). A snap-fit ​​groove (336) is opened on the outer side of the protrusion (332). A snap-fit ​​block (335) is fixedly installed at the bottom of the limiting frame (334). The snap-fit ​​block (335) is inserted into the snap-fit ​​groove (336).

5. A quick-release ion source spray needle according to claim 4, characterized in that: The linkage mechanism (31) includes a guide frame (311) and a guide rail (312). The guide rail (312) is fixedly installed on one side of the electrospray ion source (2). The guide frame (311) is fixedly installed on the side of the slider (333) near the guide rail (312). A displacement block (313) is slidably connected inside the guide rail (312). A quick-release linkage frame (314) is fixedly installed on the front of the displacement block (313). The bottom of the quick-release linkage frame (314) is fitted and connected to the inner side of the guide frame (311).

6. A quick-release ion source spray needle according to claim 5, characterized in that: The quick-release linkage frame (314) is arrow-shaped, and the inner end of the guide frame (311) is arc-shaped. The bottom slope of the quick-release linkage frame (314) and the arc surface of the inner end of the guide frame (311) are closely connected.

7. A quick-release ion source spray needle according to claim 6, characterized in that: The quick-release linkage frame (314) has a hand-operated handrail (315) fixedly installed on the upper end of the side away from the electrospray ion source (2), and a hand-operated handrail ball (316) is fixedly connected to the outer end of the hand-operated handrail (315).

8. A quick-release ion source spray needle according to claim 7, characterized in that: The overall cross-sectional shape of the snap-fit ​​block (335) is a right trapezoid, and the inclined surface of the snap-fit ​​block (335) is located at the bottom inner end.

9. A quick-release ion source spray needle according to claim 4, characterized in that: The spray needle assembly (5) includes a spray needle connector (51), which is inserted into the inner side of the mounting connector (4). Both sides of the spray needle connector (51) are fixedly connected to the protrusion (332). A threaded groove (52) is provided at the bottom of the spray needle connector (51). A threaded mounting tube (54) is threadedly connected to the inner side of the threaded groove (52). A sealing cover (55) is fixedly installed at the bottom of the threaded mounting tube (54). A spray needle body (53) is fixedly installed at the bottom of the sealing cover (55).

10. A quick-release ion source spray needle according to claim 9, characterized in that: The upper end of the sealing cover (55) is fixedly connected with anti-slip protrusions (56) at equal intervals. The top of the sealing cover (55) and the top of the spray needle connector (51) are fixedly connected with sealing gaskets. The sealing gasket on the top of the spray needle connector (51) is fitted and connected to the top of the spray needle body (53). The sealing gasket on the top of the spray needle connector (51) is fitted and connected to the mounting connector (4).

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