A sampling device for oil chromatographic detection

Abstract

This utility model discloses a sampling device for oil chromatography detection, including a detection chamber. The inner cavity of the detection chamber is fixedly equipped with a locking structure, and one side of the detection chamber is fixedly equipped with a quick-release structure. The quick-release structure includes an oil guide tube, which is fixedly disposed within the inner cavity of the detection chamber. One side of the oil guide tube is fixedly connected to a snap-fit ​​frame post. This utility model features a quick-release structure. When it is necessary to connect a second snap-fit ​​frame post, it is inserted into the first snap-fit ​​frame post. The snap-fit ​​groove on the outer wall of the second snap-fit ​​frame post engages with the snap-fit ​​ball inside the first snap-fit ​​frame post. Under the action of a second spring and a sliding frame post, the snap-fit ​​ball engages with the snap-fit ​​groove, achieving rapid locking. At this time, the first compression column and the second compression column are connected, the first oil guide hole and the second oil guide hole are connected, and the first rubber ring and the second rubber ring form a seal, ensuring unobstructed and leak-free oil sample flow. For disassembly, pressing the sliding frame post disengages the protrusion of the sliding frame post from the snap-fit ​​ball, allowing the second snap-fit ​​frame post to be easily pulled out, achieving rapid disassembly.

Description

Technical Field

[0001] This utility model relates to the field of oil chromatography detection instruments, and in particular to a sampling device for oil chromatography detection. Background Technology

[0002] The main steps of chromatographic detection are as follows: after sample extraction and rigorous purification, qualitative and quantitative determination are performed using chromatography or chromatography-mass spectrometry (GC-MS). High-performance liquid chromatography (HPLC) or gas chromatography (GC) is used to qualitatively or quantitatively detect certain single or multiple components in the sample. Rapid gas chromatography detection methods greatly improve detection speed by simplifying the purification process as much as possible.

[0003] The existing patent publication number CN222420118U discloses a sampling device for oil chromatography detection, relating to the field of chromatographic detection. This sampling device includes a sample body, inside which is a filtration mechanism. The filtration mechanism includes a filter chamber, inside which a first filter plate and a second filter plate are engaged. Inside the filter chamber is a cleaning mechanism, including a first cleaning plate and a second cleaning plate. A power rope is fixedly connected to the surface of the first cleaning plate. This sampling device extracts the oil to be tested by taking the sample body, filters impurities from the oil through the first and second filter plates, cleans the first and second filter plates with the first cleaning plate, cleans the upper surface of the first filter plate with the second cleaning plate, and uses the power rope to move the second cleaning plate by pulling the first cleaning plate. This reduces the difficulty of oil sampling and improves the efficiency of oil chromatography detection.

[0004] Existing oil chromatography sampling devices involve cumbersome sampling head disassembly, requiring tools and complex operation. Furthermore, the filters suffer from poor locking stability, are time-consuming to assemble and disassemble, and frequent operation can lead to loosening, thus affecting detection accuracy. Therefore, we propose a sampling device for oil chromatography to address these problems. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this invention is to provide a sampling device for oil chromatography detection, which can solve the problem of *.

[0007] To solve the above-mentioned technical problems, this utility model provides a sampling device for oil chromatography detection, which adopts the following technical solution: it includes a detection box, the inner cavity of the detection box is fixedly provided with a locking structure, and one side of the detection box is fixedly provided with a quick-release structure;

[0008] The quick-release structure includes an oil guide tube, which is fixedly installed in the inner cavity of the testing box. A snap-fit ​​frame post is fixedly connected to one side of the oil guide tube. A spring is fixedly connected to the inner cavity of the snap-fit ​​frame post. A compression post is fixedly connected to one end of the spring. An oil guide hole is opened in the inner cavity of the compression post. A rubber ring is fixedly installed on the outer wall of the compression post. A groove is opened in the inner cavity of the snap-fit ​​frame post. Multiple grooves are provided on the snap-fit ​​frame post. A snap-fit ​​ball is movably installed in the inner cavity of the groove.

[0009] Optionally, a spring is fixedly connected to the outer side of the first snap-fit ​​frame post, and a sliding frame post is slidably connected to the outer side of the first snap-fit ​​frame post.

[0010] Optionally, a protruding post is provided on the outer side of the snap-fit ​​frame post one, and a protruding post is provided on the inner side of the sliding frame post, with the spring two disposed between the two protruding posts.

[0011] Optionally, a second snap-fit ​​frame is slidably provided in the inner cavity of the first snap-fit ​​frame, a fixing plate is fixedly provided in the inner cavity of the second snap-fit ​​frame, a rubber ring is fixedly connected to one side of the fixing plate, a spring is fixedly connected to the other side of the fixing plate, a compression column is fixedly connected to one side of the spring, an oil guide hole is provided in the inner cavity of the compression column, and a rubber ring is fixedly provided on the outer side of the compression column.

[0012] Optionally, the outer wall of the second snap-fit ​​frame post is provided with a snap-fit ​​groove, and one side of the second snap-fit ​​frame post is provided with an oil inlet hole.

[0013] Optionally, the locking structure includes a filter box, which is fixedly disposed in the inner cavity of the test box. A base is fixedly connected to the inner wall of the filter box. A locking plate is hinged to one side of the base. A connecting post is hinged to one end of the locking plate. A handle is fixedly connected to one side of the connecting post.

[0014] Optionally, a connecting frame column is fixedly connected to the inner cavity of the connecting column, and a second locking plate is fixedly connected to one side of the connecting frame column. The connecting column is connected to the second locking plate through the connecting frame column, and the second locking plate is hinged to one side of the base.

[0015] In summary, this utility model has at least one of the following beneficial effects:

[0016] 1. When connecting the second snap-fit ​​frame post, insert it into the first snap-fit ​​frame post. The snap-fit ​​groove on the outer wall of the second snap-fit ​​frame post engages with the snap-fit ​​ball inside the first snap-fit ​​frame post. Under the action of the second spring and the sliding frame post, the snap-fit ​​ball engages in the snap-fit ​​groove, achieving quick locking. At this time, the first compression post and the second compression post are connected, the first oil guide hole and the second oil guide hole are connected, and the first rubber ring and the second rubber ring form a seal, ensuring unobstructed and leak-free oil sample flow. For disassembly, press the sliding frame post; the protrusion of the sliding frame post and the snap-fit ​​ball disengage, allowing the second snap-fit ​​frame post to be easily pulled out, achieving quick disassembly.

[0017] 2. When the filter needs to be tightened, pull the handle to rotate the connecting column. The connecting column, through the connecting frame column, links locking plates one and two, causing them to rotate around the base hinge point and press the filter firmly. The synchronized movement of locking plates one and two ensures the filter is securely fixed and prevents loosening. When the handle is released, locking plates one and two automatically return to their original positions under the linkage, releasing the filter for easy disassembly and maintenance. The locking structure is simple to operate, reliable in locking, and effectively improves maintenance efficiency. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the locking structure base connection of this utility model;

[0021] Figure 3 This is a schematic diagram of the quick-release structure oil guide tube connection of this utility model;

[0022] Figure 4 This is a schematic diagram of the quick-release structure snap-fit ​​frame column connection of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Testing box; 2. Locking structure; 3. Quick-release structure; 201. Filter box body; 202. Base; 203. Locking plate one; 204. Connecting column; 205. Handle; 206. Connecting frame column; 207. Locking plate two; 301. Oil guide pipe; 302. Snap-fit ​​frame column one; 303. Spring one; 304. Compression column one; 305. Oil guide hole one; 306. Rubber ring one; 307. Groove; 308. Snap-fit ​​ball; 309. Spring two; 310. Sliding frame column; 311. Snap-fit ​​frame column two; 312. Fixing plate; 313. Rubber ring two; 314. Spring three; 315. Compression column two; 316. Oil guide hole two; 317. Snap-fit ​​groove; 318. Oil inlet hole. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0025] Example 1, refer to Figure 1-4 In this embodiment, in order to solve the problems of inconvenient disassembly and low maintenance efficiency of the sampling head in existing oil chromatography sampling devices, and to avoid the problems of sampling head wear or detection delay caused by the difficulty of disassembly in traditional structures, this utility model discloses an oil chromatography sampling device.

[0026] Includes a testing box 1, with a locking structure 2 fixedly installed inside the testing box 1, and a quick-release structure 3 fixedly installed on one side of the testing box 1;

[0027] The quick-release structure 3 includes an oil guide tube 301, which is fixedly installed in the inner cavity of the test box 1. A snap-fit ​​frame post 302 is fixedly connected to one side of the oil guide tube 301. A spring 303 is fixedly connected to the inner cavity of the snap-fit ​​frame post 302. A compression post 304 is fixedly connected to one end of the spring 303. An oil guide hole 305 is opened in the inner cavity of the compression post 304. A rubber ring 306 is fixedly installed on the outer wall of the compression post 304. A slot 307 is opened in the inner cavity of the snap-fit ​​frame post 302. Multiple slots 307 are provided on the snap-fit ​​frame post 302. A snap-fit ​​ball 308 is movably installed in the inner cavity of the slot 307.

[0028] Specifically: the oil guide tube 301 is used to transport the oil sample to be tested; the snap-fit ​​frame post 302 is elastically connected by the internal spring 303 and compression post 304; the oil guide hole 305 of the compression post 304 ensures smooth flow of the oil sample; and the rubber ring 306 provides a seal to prevent oil leakage. The snap-fit ​​ball 308 in the slot 307 acts as a lock when the snap-fit ​​frame post 302 is connected to the snap-fit ​​frame post 311, ensuring a stable connection.

[0029] A spring 309 is fixedly connected to the outer side of the snap-fit ​​frame post 302, and a sliding frame post 310 is slidably connected to the outer side of the snap-fit ​​frame post 302.

[0030] Specifically, the design of spring 2 309 and sliding frame post 310 allows snap-fit ​​frame post 1 302 to slide under external force, facilitating quick disassembly or installation of snap-fit ​​frame post 2 311.

[0031] A protruding post is provided on the outer side of the snap-fit ​​frame post 302, and a protruding post is provided on the inner side of the sliding frame post 310. A second spring 309 is provided between the two protruding posts.

[0032] Specifically, the protruding post design limits the position of the second spring 309. The second spring 309 drives the movement of the sliding frame post 310 through the restoring force. The protruding post of the sliding frame post 310 can press or release the movement of the locking ball 308 to achieve the release and locking of the second frame post 311.

[0033] The inner cavity of the snap-fit ​​frame post 302 is slidably provided with snap-fit ​​frame post 311. The inner cavity of snap-fit ​​frame post 311 is fixedly provided with a fixing plate 312. A rubber ring 313 is fixedly connected to one side of the fixing plate 312. A spring 314 is fixedly connected to the other side of the fixing plate 312. A compression post 315 is fixedly connected to one side of the spring 314. An oil guide hole 316 is opened in the inner cavity of the compression post 315. A rubber ring 306 is fixedly provided on the outer side of the compression post 315.

[0034] Specifically, oil guide hole 2 316 is connected to oil guide hole 1 305 to ensure unobstructed flow of oil sample, and rubber ring 2 313 and rubber ring 1 306 further enhance the sealing performance to prevent oil sample leakage.

[0035] The outer wall of the snap-fit ​​column 2 311 is provided with a snap-fit ​​groove 317, and an oil inlet hole 318 is provided on one side of the snap-fit ​​column 2 311.

[0036] The specific working principle is as follows: When it is necessary to connect the second snap-fit ​​frame post 311, it is inserted into the first snap-fit ​​frame post 302. The snap-fit ​​groove 317 on the outer wall of the second snap-fit ​​frame post 311 cooperates with the snap-fit ​​ball 308 inside the first snap-fit ​​frame post 302. Under the action of the second spring 309 and the sliding frame post 310, the snap-fit ​​ball 308 is engaged in the snap-fit ​​groove 317, achieving quick locking. At this time, the first compression post 304 is connected to the second compression post 315, the first oil guide hole 305 is connected to the second oil guide hole 316, and the first rubber ring 306 and the second rubber ring 313 form a seal, ensuring unobstructed and leak-free oil sample flow. During disassembly, pressing the sliding frame post 310 disengages the protrusion of the sliding frame post 310 from the snap-fit ​​ball 308, allowing the second snap-fit ​​frame post 311 to be easily pulled out, achieving quick disassembly.

[0037] Example 2, refer to Figure 1-4In this embodiment, in order to solve the problems of unstable filter locking and cumbersome disassembly in existing oil chromatography sampling devices, and to avoid the problems of time-consuming maintenance or filter loosening affecting detection accuracy due to the complex operation of the traditional locking structure 2, based on the same concept as the first embodiment above, this oil chromatography sampling device also includes a locking structure 2:

[0038] The locking structure 2 includes a filter box 201, which is fixedly installed in the inner cavity of the test box 1. A base 202 is fixedly connected to the inner wall of the filter box 201. A locking plate 203 is hinged to one side of the base 202. A connecting post 204 is hinged to one end of the locking plate 203. A handle 205 is fixedly connected to one side of the connecting post 204.

[0039] Specifically, the filter housing 201 is used to house the filter, and the base 202 provides support for the locking plate 203 and the second locking plate 207. By pulling the handle 205, the connecting column 204 drives the locking plate 203 and the second locking plate 207 to rotate around the hinge point, thereby achieving quick locking or releasing of the filter.

[0040] A connecting frame post 206 is fixedly connected to the inner cavity of the connecting post 204. A locking plate 207 is fixedly connected to one side of the connecting frame post 206. The connecting post 204 is connected to the locking plate 207 through the connecting frame post 206. The locking plate 207 is hinged to one side of the base 202.

[0041] Specifically, the connecting frame post 206 links the connecting post 204 with the second locking plate 207, ensuring that the first locking plate 203 and the second locking plate 207 move synchronously, thereby enhancing the stability of the locking structure 2.

[0042] The specific working principle is as follows: When the filter needs to be locked, pulling handle 205 rotates the connecting column 204. The connecting column 204, through the connecting frame column 206, links locking plates 203 and 207, causing it to rotate around the hinge point of the base 202 and press the filter. The synchronous movement of locking plates 203 and 207 ensures the filter is firmly fixed and prevents loosening. When the handle 205 is released, locking plates 203 and 207 automatically return to their original positions under the linkage, releasing the filter for easy disassembly and maintenance. The locking structure 2 is designed for ease of operation and reliable locking, effectively improving maintenance efficiency.

[0043] The wiring diagrams of the motor and cylinder in this utility model are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the motor and cylinder will not be explained in detail.

[0044] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A sampling device for oil chromatography detection, comprising a detection chamber (1), characterized in that: The inner cavity of the testing box (1) is fixedly provided with a locking structure (2), and one side of the testing box (1) is fixedly provided with a quick-release structure (3); The quick-release structure (3) includes an oil guide pipe (301), which is fixedly installed in the inner cavity of the detection box (1). A snap-fit ​​frame post (302) is fixedly connected to one side of the oil guide pipe (301). A spring (303) is fixedly connected to the inner cavity of the snap-fit ​​frame post (302). A compression post (304) is fixedly connected to one end of the spring (303). An oil guide hole (305) is opened in the inner cavity of the compression post (304). A rubber ring (306) is fixedly installed on the outer wall of the compression post (304). A slot (307) is opened in the inner cavity of the snap-fit ​​frame post (302). Multiple slots (307) are provided on the snap-fit ​​frame post (302). A snap-fit ​​ball (308) is movably installed in the inner cavity of the slot (307).

2. The sampling device for oil chromatography detection according to claim 1, characterized in that: A spring (309) is fixedly connected to the outer side of the snap-fit ​​frame post one (302), and a sliding frame post (310) is slidably connected to the outer side of the snap-fit ​​frame post one (302).

3. The sampling device for oil chromatography detection according to claim 2, characterized in that: The outer side of the snap-fit ​​frame post one (302) is provided with a protruding post, the inner side of the sliding frame post (310) is provided with a protruding post, and the spring two (309) is disposed between the two protruding posts.

4. The sampling device for oil chromatography detection according to claim 3, characterized in that: The inner cavity of the first snap-fit ​​frame post (302) is slidably provided with the second snap-fit ​​frame post (311). The inner cavity of the second snap-fit ​​frame post (311) is fixedly provided with the fixing plate (312). A rubber ring (313) is fixedly connected to one side of the fixing plate (312). A spring (314) is fixedly connected to the other side of the fixing plate (312). A compression post (315) is fixedly connected to one side of the spring (314). An oil guide hole (316) is opened in the inner cavity of the compression post (315). A rubber ring (306) is fixedly provided on the outer side of the compression post (315).

5. The sampling device for oil chromatography detection according to claim 4, characterized in that: The outer wall of the snap-fit ​​frame post 2 (311) is provided with a snap-fit ​​groove (317), and an oil inlet hole (318) is provided on one side of the snap-fit ​​frame post 2 (311).

6. The sampling device for oil chromatography detection according to claim 1, characterized in that: The locking structure (2) includes a filter box (201), which is fixedly installed in the inner cavity of the detection box (1). A base (202) is fixedly connected to the inner wall of the filter box (201). A locking plate (203) is hinged to one side of the base (202). A connecting post (204) is hinged to one end of the locking plate (203). A handle (205) is fixedly connected to one side of the connecting post (204).

7. The sampling device for oil chromatography detection according to claim 6, characterized in that: The inner cavity of the connecting column (204) is fixedly connected to the connecting frame column (206), and a locking plate (207) is fixedly connected to one side of the connecting frame column (206). The connecting column (204) is connected to the locking plate (207) through the connecting frame column (206), and the locking plate (207) is hinged to one side of the base (202).

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