Biochemical analyzer sample injector with pre-filtering structure

Abstract

The utility model relates to the field of filter structures, in particular to a biochemical analyzer sample injector with a pre-filter structure, which comprises a sample injector, a connector, a filter element, a sealing washer, a buffer filter cartridge and a filter screen, the connector is mounted on the upper side of the sample injector, and the filter element is mounted on the inner side of the sample injector. The filter element can effectively remove impurities such as suspended solids, particles and bacteria in sample liquid, the sample injection quality of the sample liquid is ensured, the sealing washers are installed on the upper side and the lower side of the filter element, the buffer filter cartridge is installed on the outer ring of the filter element, and the filter screen is installed on the lower side of the buffer filter cartridge. The filter screen is used for secondary filtration, so that small particles, soluble substances and residual impurities in the sample liquid can be further removed, the high-standard requirement can be met, and the sample liquid is ensured to reach a higher standard.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter structure field, concretely relates to a biochemical appearance sample injector with prefiltering structure. BACKGROUND

[0002] Biochemical appearance sample injector is a device that sends sample into chromatographic column quantitatively, is mainly used in biochemical experiment, and can be divided into two types of manual sample injector and automatic sample injector. The automatic sample injector is an intelligent and automatic device, which can complete the automatic sampling process by setting the sampling parameters and putting the sample to be detected, can reduce physical labor, increase sample processing capacity, improve daily work precision, and China patent discloses a biochemical appearance sample injector with prefiltering structure (authorized announcement number CN 221999937U), the patent technology can adjust the height of the lifting cylinder installed on the side of the biochemical appearance sample tube, so that the sample tube can adjust the height according to the needs, adapt to different working environment and operation demand, improve the flexibility and applicability of the sample injector, the prefiltering structure installed in the biochemical appearance sample tube, the filter screen with U-shaped section can effectively filter the impurities and particulate matters in the sample, ensure the quality of the sample entering the biochemical appearance, and improve the accuracy of the detection result, the limiting ring at the top of the prefiltering structure not only plays the role of fixing the filter screen, but also ensures the stable position of the filter screen in the biochemical appearance sample tube, prevents the decline or damage of the filtering effect caused by vibration or movement, but the design of the U-shaped filter screen is a single filter screen structure, without double-layer filtering, and the filtering quality is not high. Therefore, the technical personnel in the field provides a biochemical appearance sample injector with prefiltering structure to solve the problems in the above background technology. CONTENT OF UTILITY MODEL

[0003] In order to solve the above technical problems, the utility model provides a biochemical appearance sample injector with prefiltering structure, which comprises a sample injector, a connecting head, a filter element, a sealing gasket, a buffer filter cartridge and a filter screen, the connecting head is installed on the upper side of the sample injector, the filter element is installed on the inner side of the sample injector, the sealing gaskets are installed on the upper side and the lower side of the filter element, the buffer filter cartridge is installed on the outer ring of the filter element, and the filter screen is installed on the lower side of the buffer filter cartridge.

[0004] Preferably, the lower side of the sample injector is provided with a conical liquid hopper, the lower side of the conical liquid hopper is provided with a plug connector, the upper end of the sample injector is provided with an internally threaded cylinder, a threaded head is installed in the internally threaded cylinder, the threaded head is fixed to the lower side wall of the connecting head, a compression ring is installed at the bottom of the threaded head, and the compression ring compresses the sealing gasket between the threaded head and the filter element.

[0005] Preferably, two convex plates are installed on the upper and lower sides of the filter element, a groove is arranged between the convex plates, a sealing gasket is installed in the groove, tapered plates are arranged on the inner and outer side walls of the filter element, and a first filter hole is arranged at the joint of the tapered plates.

[0006] Preferably, a sealing baffle is installed in the middle of the buffer filter cartridge, a second filter hole is installed at the bottom of the buffer filter cartridge, a flow slowing groove is provided between the sealing baffle and the second filter hole, and multiple outflow holes are provided in the inner side plate of the buffer filter cartridge;

[0007] Preferably, a convex ring is installed on the inner wall of the injector, a retaining ring is installed on the upper side of the convex ring, the retaining ring is fixed to the upper outer wall of the filter screen, and a buffer filter cartridge is installed on the upper side of the retaining ring.

[0008] The technical effects and advantages of this utility model are as follows:

[0009] 1. The filter cartridge can effectively remove suspended solids, particulate matter, bacteria and other impurities from the sample solution, ensuring the quality of the sample solution.

[0010] 2. The fluid after the initial filtration may still contain tiny particles. The presence of the slow-flow tank can further settle these tiny particles, thus improving the quality of subsequent filtration.

[0011] 3. Secondary filtration through a filter screen can further remove tiny particles, dissolved substances, and residual impurities from the sample solution, meeting high standards and ensuring that the sample solution meets higher standards. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a biochemical analyzer injector with a pre-filter structure provided in an embodiment of this application;

[0013] Figure 2 This is a schematic cross-sectional view of a biochemical analyzer injector with a pre-filter structure provided in an embodiment of this application;

[0014] Figure 3 This application provides a biochemical analyzer injector with a pre-filter structure. Figure 2 A schematic diagram of structure A;

[0015] Figure 4 This application provides a biochemical analyzer injector with a pre-filter structure. Figure 2 A schematic diagram of the B structure;

[0016] Figure 5 This is a schematic diagram of the structure of the connector removed from the sample injector of a biochemical analyzer with a pre-filter structure, provided in an embodiment of this application.

[0017] Figure 6 This is an exploded structural diagram of a biochemical analyzer sampler with a pre-filter structure provided in an embodiment of this application;

[0018] Figure 7 This application provides a biochemical analyzer injector with a pre-filter structure. Figure 6 A schematic diagram of the C-structure;

[0019] Figure 8 Figure 1 is a schematic view of a biochemical instrument sample injector with a pre-filtering structure according to an embodiment of the present application.

[0020] In the figure: 1, sample injector; 2, connecting head; 3, filter cartridge; 4, sealing washer; 5, buffer filter cartridge; 6, filter screen; 101, conical liquid hopper; 102, plug connector; 103, internally threaded cylinder; 104, convex ring; 201, threaded head; 202, compression ring; 301, convex plate; 302, groove; 303, conical plate; 304, first filter hole; 501, outflow hole; 502, sealing baffle; 503, buffer groove; 504, second filter hole; 601, snap ring. DETAILED DESCRIPTION

[0021] The present application will be further described below in conjunction with the drawings and specific embodiments. The embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments are chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

[0022] EMBODIMENT

[0023] Please refer to Figures 1-8 In the present embodiment, a biochemical instrument sample injector with a pre-filtering structure is provided, which comprises a sample injector 1, a connecting head 2, a filter cartridge 3, a sealing washer 4, a buffer filter cartridge 5, and a filter screen 6. The connecting head 2 is installed on the upper side of the sample injector 1, the filter cartridge 3 is installed on the inner side of the sample injector 1, the sealing washer 4 is installed on the upper and lower sides of the filter cartridge 3, the buffer filter cartridge 5 is installed on the outer ring of the filter cartridge 3, and the filter screen 6 is installed on the lower side of the buffer filter cartridge 5.

[0024] Specific, the lower side of the sample injector 1 is installed with a conical liquid hopper 101, the lower side of the conical liquid hopper 101 is installed with a plug 102, the upper end of the sample injector 1 is provided with an internally threaded cylinder 103, the internally threaded cylinder 103 is installed with a threaded head 201, the threaded head 201 is fixed to the lower side wall of the connecting head 2, the bottom of the threaded head 201 is installed with a compression ring 202, the compression ring 202 compresses the sealing gasket 4 between the threaded head 201 and the filter cartridge 3, two convex plates 301 are installed on the upper and lower sides of the filter cartridge 3, a groove 302 is arranged between the convex plates 301, the sealing gasket 4 is installed in the groove 302, the inner and outer side walls of the filter cartridge 3 are provided with tapered plates 303, a first filter hole 304 is arranged at the abutting position of the tapered plates 303, a sealing baffle 502 is installed in the middle of the buffer filter cartridge 5, a second filter hole 504 is installed at the bottom of the buffer filter cartridge 5, a slow flow groove 503 is arranged between the sealing baffle 502 and the second filter hole 504, a plurality of outflow holes 501 are arranged in the inner side plate of the buffer filter cartridge 5, a convex ring 104 is installed on the inner side wall of the sample injector 1, a clamping ring 601 is installed on the upper side of the convex ring 104, the clamping ring 601 is fixed to the outer side wall of the upper end of the filter screen 6, and the buffer filter cartridge 5 is installed on the upper side of the clamping ring 601.

[0025] The working principle of the utility model is:

[0026] In use a kind of biochemical instrument sample injector with pre-filtering structure, filter cartridge 3 can effectively remove suspended solids, particulate matter, bacteria and other impurities in sample solution, ensure the sample injection quality of sample solution, micro-particles can still be contained in fluid after primary filtration, the existence of slow flow groove 503, further sedimentation these micro-particles, improve guarantee for subsequent filtration, secondary filtration is carried out by filter screen 6, and micro-particles, dissolved substances and residual impurities in sample solution can be further removed, high standard requirement can be met, and sample solution reaches higher standard.

[0027] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled person in the art and related fields without creative labor should belong to the scope of protection of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model, are implemented according to conventional means in the art, without special description and limitation.

Claims

1. A biochemical instrument sample injector with pre-filtering structure, characterized in that, The utility model provides an improved sample injector, which comprises a sample injector (1), a connecting head (2), a filter cartridge (3), a sealing gasket (4), a buffer filter cartridge (5) and a filter screen (6).

2. The biochemical instrument sample injector with pre-filter structure according to claim 1, characterized in that, The utility model discloses a sample injector, which comprises a sample injector (1), a connecting head (2), a filter cartridge (3), a sealing gasket (4), a buffer filter cartridge (5) and a filter screen (6).

3. The biochemical instrument sample injector with pre-filter structure according to claim 2, characterized in that, The utility model discloses a sample injector, which comprises a sample injector (1), a connecting head (2), a filter cartridge (3), a sealing gasket (4), a buffer filter cartridge (5) and a filter screen (6).

4. The biochemical instrument sample injector with pre-filter structure according to claim 3, characterized in that, The utility model discloses a sample injector, which comprises a sample injector (1), a connecting head (2), a filter cartridge (3), a sealing gasket (4), a buffer filter cartridge (5) and a filter screen (6).

5. The biochemical instrument sample injector with pre-filter structure according to claim 4, characterized in that, The utility model discloses a sample injector, which comprises a sample injector (1), a connecting head (2), a filter cartridge (3), a sealing gasket (4), a buffer filter cartridge (5) and a filter screen (6).

6. The biochemical instrument sample injector with pre-filter structure according to claim 5, characterized in that, The utility model discloses a sample injector, which comprises a sample injector (1), a connecting head (2), a filter cartridge (3), a sealing gasket (4), a buffer filter cartridge (5) and a filter screen (6).

7. The biochemical instrument sample injector with pre-filtering structure according to claim 1, characterized in that, The utility model discloses a sample injector, which comprises a sample injector (1), a connecting head (2), a filter cartridge (3), a sealing gasket (4), a buffer filter cartridge (5) and a filter screen (6).

8. The biochemical instrument sample injector with pre-filter structure according to claim 3, characterized in that, The utility model discloses a sample injector, which comprises a sample injector (1), a connecting head (2), a filter cartridge (3), a sealing gasket (4), a buffer filter cartridge (5) and a filter screen (6). The utility model discloses a sample injector, which comprises a sample injector (1), a connecting head (2), a filter cartridge (3), a sealing gasket (4), a buffer filter cartridge (5) and a filter screen (6).

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