A chromatograph sample introduction device that is easy to maintain

Abstract

The utility model discloses a chromatographic apparatus sampling device convenient to maintain relates to chromatographic apparatus sampling technical field, the utility model discloses a support platform still includes, dismounting mechanism, the dismounting mechanism sets up at the front of support platform, fixed establishment, the fixed establishment sets up at support platform top, the dismounting mechanism includes locking assembly, and the locking assembly sets up at the front of support platform. The utility model discloses through setting up dismounting mechanism, when maintaining internal parts, hold two fixed plates and pull and make it close, and the fixed plate is driven locking plate close through fixed link, and fixed link slides along the notched mouth, and locking plate compresses spring one and separates from locking groove simultaneously, hold fixed plate and remove baffle at this moment, and spring one drives locking plate reset after loosing fixed plate, can maintain or check inside control module, need not special tool, and maintenance time is greatly shortened, and the precision of repeatedly dismounting damage component is reduced, and the maintenance efficiency is improved simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of chromatograph injection technology, and in particular relates to a chromatograph injection device that is easy to maintain. Background Technology

[0002] In fields such as chemical analysis, environmental monitoring, and biomedicine, the core performance of a chromatograph, as a high-precision separation and detection device, directly depends on the stability and accuracy of the sample injection process. As a key component of the chromatograph, the sample injection device plays an important role in accurately delivering trace amounts of sample to the chromatographic column. Its structural design and ease of maintenance have a decisive impact on the overall detection efficiency, data repeatability, and long-term service life of the instrument.

[0003] Most existing sample introduction devices adopt an integrated fixed structure, with core components and support platforms connected by bolts, welding, etc. However, when the device experiences component wear or requires maintenance, operators need to use special tools to disassemble multiple fixed parts one by one. Furthermore, some internal components are difficult to access directly due to their compact space, resulting in a time-consuming disassembly and reassembly process. This not only reduces the sample detection efficiency of the laboratory but may also damage the coaxiality and sealing between components due to repeated disassembly operations, thereby affecting the accuracy of subsequent detection data. Therefore, a chromatograph sample introduction device that is easy to maintain is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a chromatograph injection device that is easy to maintain. By incorporating a disassembly mechanism, specifically when repairing internal components, two fixing plates are grasped and pulled close together. The fixing plates, via fixing rods, bring a locking plate closer. As the fixing rods slide along the groove, the locking plate's compression spring disengages from the locking groove. At this point, the fixing plates are grasped to remove the baffle. Releasing the fixing plates causes the spring to reset the locking plate, allowing for the repair or inspection of the internal control module. No special tools are required, significantly shortening maintenance time, reducing damage to component precision caused by repeated disassembly, and improving maintenance efficiency. This invention addresses the problem that most existing injection devices use an integrated fixed structure, where core components are connected to the support platform via bolts or welding. However, when the device experiences component wear or requires repair, operators must use special tools to disassemble multiple fixing parts one by one. Furthermore, some internal components are difficult to access directly due to their compact space, leading to time-consuming disassembly and reassembly processes. This not only reduces laboratory sample testing efficiency but may also damage the coaxiality and sealing between components due to repeated disassembly, thus affecting the accuracy of subsequent test data.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a chromatograph sample injection device that is easy to maintain. It includes a support platform, a disassembly mechanism located on the front of the support platform, a fixing mechanism located on the top of the support platform, and a locking component located on the front of the support platform. The support component is located inside the support platform. The locking component includes a baffle with four slots on its front. Four springs are installed inside the baffle. Two locking plates are installed on the sides of the four springs that are far apart from each other. Locking slots are provided on the left and right sides of the front of the support platform. Driving components are provided on the front of both locking plates. The support component includes a control module located inside the support platform. Support legs are installed at the four corners of the bottom of the support platform, and a control console is installed on the top of the support platform.

[0006] Furthermore, the fixing mechanism includes a circular plate mounted on the top of the support platform. The top of the circular plate has several slots. Several fixing blocks are installed inside the circular plate, with three fixing blocks forming a group, and several groups in total. Each fixing block has a sliding groove inside, and each sliding groove has a spring. Limiting plates are installed on the opposite sides of each spring. The springs are made of 60Si2Mn alloy spring steel, which has excellent elastic limit and fatigue strength. When the sample bottle presses against the arc-shaped plate and moves the sliding rod and limiting plate, the spring is compressed and stores elastic potential energy. After the sample bottle is fully inserted, the spring releases its elastic potential energy, and through the reaction force, pushes the limiting plate, sliding rod, and arc-shaped plate back to their original positions, causing the arc-shaped plate to tightly fit against the outer wall of the sample bottle. This achieves adaptive clamping and fixing of the sample bottle, while avoiding rigid clamping that could cause compression damage, ensuring the bottle remains stable and does not shift during the injection process.

[0007] Furthermore, each of the several limiting plates has a sliding rod installed on one side close to each other, and each of the sliding rods slides within several sliding grooves. The limiting plates are rectangular in shape, and each limiting plate limits the sliding movement of the sliding rods. The limiting plates are directly connected to the second spring, receiving the elastic force of the second spring and transmitting it to the sliding rods, providing a stable source of thrust for the sliding rods. By adapting the rectangular structure to the sliding grooves inside the fixed block, the sliding trajectory of the sliding rods is strictly limited.

[0008] Furthermore, several of the sliding rods are equipped with arc-shaped plates on their adjacent sides, and several of the arc-shaped plates are equipped with guide plates on their tops. The arc-shaped plates are all arc-shaped, the guide plates are all semi-arc-shaped, and the tops of the guide plates are conical. The conical surface of the guide plates can automatically guide the sample bottle to slide towards the center of the circular plate, reducing the difficulty of operation. At the same time, the semi-arc design is adapted to the outer wall of the sample bottle, and can initially fit the bottle during the guidance process, preventing the sample bottle from shaking or tipping over during introduction, and assisting the sample bottle to enter the fixed position quickly and smoothly.

[0009] Furthermore, the driving component includes four fixing rods, which are respectively installed on the front of the two locking plates. The four fixing rods slide within the four slots. Two fixing plates are installed on the front of the four fixing rods. The four fixing rods are arranged in pairs, with a total of two sets. Each set of fixing rods is symmetrically arranged with the baffle as the center. The fixing rods are made of 304 stainless steel, which has high strength and rigidity and can withstand the pushing force of the operator without bending or deforming, ensuring transmission stability. The fixing rods are limited by the sliding trajectory of a pair of fixing rods in the slots, ensuring that the fixing rods always maintain a horizontal direction when driving the locking plates to move, and preventing the locking plates from shifting due to uneven force, which would prevent them from accurately disengaging from or locking into the locking slots.

[0010] This utility model has the following beneficial effects: 1. This utility model, through the setting of a disassembly mechanism, specifically, when repairing internal components, grasp two fixing plates and pull them close together. The fixing plates drive the locking plate close together via fixing rods. As the fixing rods slide along the groove, the locking plate compresses the spring and disengages from the locking groove. At this time, grasp the fixing plates to remove the baffle. After releasing the fixing plates, the spring drives the locking plate to reset, allowing for the repair or inspection of the internal control module. No special tools are required, which greatly shortens maintenance time, reduces damage to component precision caused by repeated disassembly, and improves maintenance efficiency.

[0011] 2. This utility model features a fixing mechanism. Specifically, the sample bottle is inserted into the circular plate along the guide plate at the top of the cone. The guide plate guides and assists in insertion. During insertion, the sample bottle pushes the arc plate apart, causing the slide rod to slide along the groove. At the same time, it pushes the limiting plate and compresses the second spring. After the sample bottle is fully inserted, the compressed second spring generates a reaction force, causing the slide rod and the arc plate to move closer to each other. The arc plate fixes the sample bottle, achieving self-adaptive fixing. This mechanism can accommodate sample bottles of different specifications, ensuring stability and detection accuracy during the injection process.

[0012] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the slot structure of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a schematic diagram of the control module structure of this utility model; Figure 5 This is a schematic diagram of the second groove structure of this utility model; Figure 6 This is a schematic diagram of the fixing mechanism of this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 1. Support platform; 2. Disassembly mechanism; 21. Locking assembly; 211. Baffle; 212. Slot 1; 213. Spring 1; 214. Locking plate; 215. Locking slot; 216. Fixing rod; 217. Fixing plate; 22. Support assembly; 221. Control module; 222. Support leg; 223. Control console; 3. Fixing mechanism; 311. Circular plate; 312. Slot 2; 313. Fixing block; 314. Slide groove; 315. Spring 2; 316. Limiting plate; 317. Slide rod; 318. Arc plate; 319. Guide plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] Please see Figures 1-6As shown, this utility model is a chromatograph sample injection device that is easy to maintain. It includes a support platform 1, a disassembly mechanism 2 (located on the front of the support platform 1), and a fixing mechanism 3 (located on the top of the support platform 1). The disassembly mechanism 2 includes a locking component 21 (located on the front of the support platform 1) and a support component 22 (located inside the support platform 1). The locking component 21 includes a baffle 211 with four slots 212 on its front. Four springs 213 are installed inside the baffle 211. Two locking plates 214 are installed on the side of the four springs 213 that are far apart from each other. Locking slots 215 are provided on the left and right sides of the front of the support platform 1. A driving component is provided on the front of each of the two locking plates 214. The support component 22 includes a control... Module 221, the control module 221 is located inside the support platform 1. Support legs 222 are installed at the four corners of the bottom of the support platform 1, and a control console 223 is installed on the top of the support platform 1. Specifically, when repairing internal parts, hold the two fixing plates 217 and pull them close. The fixing plates 217 drive the locking plate 214 close through the fixing rod 216. The fixing rod 216 slides along the slot 212, and at the same time, the locking plate 214 compresses the spring 213 and disengages from the locking groove 215. At this time, hold the fixing plate 217 to remove the baffle 211. After releasing the fixing plate 217, the spring 213 drives the locking plate 214 to reset. The internal control module 221 can then be repaired or inspected without special tools, which greatly shortens the maintenance time, reduces repeated disassembly that damages the precision of parts, and improves maintenance efficiency.

[0018] The fixing mechanism 3 includes a circular plate 311, which is installed on the top of the support platform 1. The top of the circular plate 311 has several slots 312. Several fixing blocks 313 are installed inside the circular plate 311, arranged in groups of three. Each fixing block 313 has a sliding groove 314 inside, and each sliding groove 314 has a spring 315 installed inside. Limit plates 316 are installed on the sides of the springs 315 that are far apart from each other, and sliding rods 317 are installed on the sides of the limit plates 316 that are close together. The sliding rods 317 slide within the sliding grooves 314. The limit plates 316 are rectangular and are used to limit the sliding movement of the sliding rods 317. An arc-shaped plate 318 is installed on one side, and an inlet plate 319 is installed on the top of several arc-shaped plates 318. Several arc-shaped plates 318 are arc-shaped, several inlet plates 319 are semi-arc-shaped, and several inlet plates 319 are conical in top. Specifically, the sample bottle is placed into the circular plate 311 along the inlet plate 319 at the top of the conical plate. The inlet plate 319 guides and assists the insertion. When inserted, the sample bottle pushes the arc-shaped plate 318 to separate, causing the slide rod 317 to slide along the slide groove 314. At the same time, it pushes the limiting plate 316 and compresses the second spring 315. After the sample bottle is fully inserted, the compressed second spring 315 generates a reaction force, causing the slide rod 317 and the arc-shaped plate 318 to move closer to each other. The arc-shaped plate 318 fixes the sample bottle, achieving self-adaptive fixation. It can be adapted to sample bottles of different specifications, ensuring stability and detection accuracy during the injection process.

[0019] The driving component includes four fixing rods 216, which are respectively installed on the front of two locking plates 214. All four fixing rods 216 slide inside the four slots 212. Two fixing plates 217 are installed on the front of the four fixing rods 216. The four fixing rods 216 are arranged in pairs, and there are two sets in total. Each set of fixing rods 216 is symmetrically arranged with the baffle 211 as the center.

[0020] A specific application of this embodiment is as follows: In use, the user first inserts the sample vial into the circular plate 311 along the guide plate 319. Since the guide plate 319 has a conical top, it guides the sample vial when the user inserts it into the circular plate 311. When the sample vial is inserted into the circular plate 311, it first pushes the arc-shaped plates 318 away from each other, thereby causing the slide rod 317 to slide along the slide groove 314, and pushing the limiting plate 316 to move, and compressing the second spring 31. 5. When the sample vial is fully inserted into the circular plate 311, the compressed spring 315 generates an opposing force, causing the sliding rods 317 to move closer together, and simultaneously causing the arc-shaped plates 318 to move closer together. At this time, the arc-shaped plates 318 will fix the sample vial. Subsequently, commands can be input through the control console 223, and the control module 221 will start the chromatograph's sample injection process. When internal components need to be repaired, the user can hold the two fixing plates 217 and pull them closer together. At this time, the fixing plates 217 will be locked by the fixing rod 216. When the plates 214 approach each other, the fixing rod 216 slides along the slot 212. Simultaneously, as the two locking plates 214 approach each other, the spring 213 is compressed, and the locking plate 214 disengages from the locking slot 215. When the locking plate 214 disengages from the locking slot 215, the user can remove the baffle 211 from the support platform 1 by holding the fixing plate 217 and releasing the fixing plate 217. Under the elastic action of the spring 213, the locking plate 214 is reset, and then the internal control... When the control module 221 is being maintained or periodically inspected, during installation, the user can hold the two fixing plates 217 to bring the two locking plates 214 closer together, thereby compressing the spring 213. Then, the baffle 211 can be placed at the opening on the front of the support platform 1, aligning the locking groove 215 with the locking plate 214. After that, the fixing plates 217 can be released, and under the elastic action of the spring 213, the two locking plates 214 will move away from each other, thereby causing the two locking plates 214 to snap into the locking groove 215, completing the installation.

[0021] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A chromatograph injection device that is easy to maintain, comprising a support stage (1), characterized in that, Also includes: Disassembly mechanism (2), which is located on the front of support platform (1); as well as Fixing mechanism (3), which is set on top of support platform (1); The disassembly mechanism (2) includes a locking component (21) which is disposed on the front of the support platform (1); Support component (22), which is disposed inside the support platform (1); The locking assembly (21) includes a baffle (211), which has four slots (212) on its front side. Four springs (213) are installed inside the baffle (211). Two locking plates (214) are installed on the side of the four springs (213) that are far apart from each other. Locking slots (215) are provided on the left and right sides of the front side of the support platform (1). A driving component is provided on the front side of the two locking plates (214).

2. The chromatograph injection device for easy maintenance according to claim 1, characterized in that, The support assembly (22) includes a control module (221), which is located inside the support platform (1). Support legs (222) are installed at the four corners of the bottom of the support platform (1), and a control console (223) is installed on the top of the support platform (1).

3. The chromatograph sample introduction device for easy maintenance according to claim 2, characterized in that, The fixing mechanism (3) includes a circular plate (311), which is installed on the top of the support platform (1). The top of the circular plate (311) has several slots (312), and several fixing blocks (313) are installed inside the circular plate (311). Among them, several fixed blocks (313) are arranged in groups of three, and a total of several groups are set.

4. The chromatograph sample introduction device for easy maintenance according to claim 3, characterized in that, Each of the fixed blocks (313) has a sliding groove (314) inside, and each of the sliding grooves (314) has a spring (315) installed inside. Each of the springs (315) has a limit plate (316) installed on the side away from each other.

5. The chromatograph sample introduction device for easy maintenance according to claim 4, characterized in that, Each of the limiting plates (316) is equipped with a sliding rod (317) on one side that is close to each other, and the sliding rods (317) slide inside the sliding grooves (314); Among them, several of the limiting plates (316) are rectangular, and several of the limiting plates (316) are sliding and limited by several sliding rods (317).

6. The chromatograph sample introduction device for easy maintenance according to claim 5, characterized in that, An arc-shaped plate (318) is installed on one side of each of the sliding rods (317) that are close to each other, and an inlet plate (319) is installed on the top of each of the arc-shaped plates (318). Among them, several of the arc-shaped plates (318) are arc-shaped, several of the guide plates (319) are semi-arc-shaped, and the top of several of the guide plates (319) is conical.

7. The chromatograph sample introduction device for easy maintenance according to claim 1, characterized in that, The driving component includes four fixing rods (216), which are respectively installed on the front of two locking plates (214). The four fixing rods (216) slide inside the four slots (212), and two fixing plates (217) are installed on the front of the four fixing rods (216). Among them, the four fixing rods (216) are arranged in pairs, and there are two sets in total. The fixing rods (216) in each set are symmetrically arranged with the baffle (211) as the center.

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