Extraction device for food detection

Abstract

The utility model relates to the technical field of food detection, in particular to an extraction device for food detection, which comprises a base, two first supports distributed left and right at intervals are arranged at the top of the base, a first cross beam is clamped at the tops of the first supports, a plurality of extraction columns are arranged on the first cross beam, and a sliding block is arranged on the base below the first cross beam. A linear sliding rail is arranged between the sliding block and the base, the sliding block can horizontally move inwards and outwards relative to the base, a second cross beam is erected on the sliding block, a plurality of groove holes are formed in the second cross beam, clamping seats of conical cylinder structures with wide upper parts and narrow lower parts are clamped in the groove holes, radial tensioning structures are arranged at the bottoms of the clamping seats, and the clamping seats are used for inserting and clamping test tubes. The test tubes installed according to the threshold positions can be located under the liquid outlets of the extraction columns in a one-to-one correspondence mode. The utility model is favorable for solving the problem that the test tubes of some existing extraction devices are inconvenient to disassemble and assemble due to stiff mounting structures of the test tubes.

Description

Technical Field

[0001] The utility model relates to the technical field of food detection, in particular to an extraction device used for food detection. Background Art

[0002] Solid-phase extraction (SPE) is a sample pretreatment technology developed by combining liquid-solid extraction and column liquid chromatography technology. It is mainly used for sample separation, purification and concentration. Compared with traditional liquid-liquid extraction, it can improve the recovery rate of analytes, more effectively separate analytes from interfering components, reduce the sample pretreatment process, and is simple to operate. Solid-phase extraction uses solid adsorbents to adsorb target compounds in liquid samples, separate them from the sample matrix and interfering compounds, and then elute with eluent or heat desorb to achieve the purpose of separating and enriching target compounds. It is widely used in medicine, food, environment, commodity inspection, chemical industry and other fields.

[0003] Currently, the common solid-phase extraction device used for food testing generally includes a bracket with multiple extraction columns inserted on the bracket. A corresponding test tube is placed at the bottom of each extraction column to collect liquid. When performing the extraction work, liquid needs to be added and collected in multiple steps, and the liquid collection test tube generally needs to be replaced multiple times. Since the test tube is inserted in the slot of the bracket, repeated disassembly and assembly of the test tube is cumbersome and prone to collision, resulting in liquid leakage in the test tube or damage to the test tube structure, which is also easy to affect the progress of the detection. Utility Model Content

[0004] The utility model provides an extraction device for food testing, which is conducive to solving the problems of some existing extraction devices in that the test tube installation structure is rigid and the test tube is not convenient to assemble and disassemble.

[0005] The utility model is achieved in this way:

[0006] A food inspection extraction device comprises a base, two first brackets spaced apart on the left and right sides are provided on the top of the base, a first crossbeam is clamped on the top of the first bracket, a plurality of extraction columns are provided on the first crossbeam, the discharge port of the extraction column passes through the first crossbeam and is arranged downward, a valve with adjustable discharge speed is provided on the extraction column above the discharge port, a slider is provided on the base below the first crossbeam, a linear slide rail is provided between the slider and the base, the slider can be horizontally displaced inward and outward relative to the base, a second crossbeam is mounted on the slider, a plurality of slots are provided on the second crossbeam, a holder with a tapered structure with a wide top and a narrow bottom is clamped in the slot, a radial tensioning structure is provided at the bottom of the holder, the holder is used to insert and clamp test tubes, and the test tubes installed according to the threshold position can be located one-to-one directly below the discharge port of the extraction column.

[0007] On the basis of the above technical solution, a limiting plate is provided at the bottom of the first crossbeam, and the limiting plate can be fitted with the outer side wall of the first bracket to form a transverse limiting structure.

[0008] On the basis of the above technical solution, a sink groove is provided on the base, the slider is arranged in the sink groove, and the linear slide rail is located between the bottom of the slider and the bottom of the sink groove.

[0009] On the basis of the above technical solution, the slider is provided with a pull ring for facilitating push and pull operations.

[0010] On the basis of the above technical solution, the slider is provided with two second brackets spaced apart on the left and right sides, the second brackets are sleeved with an adjusting knob, and the second crossbeam is clamped on the top of the adjusting knob.

[0011] On the basis of the above technical solution, the adjusting knob can slide up and down along the second bracket in a loose state, and the adjusting knob can form a height adjustment structure of the second beam on the second bracket through the loose and tight states.

[0012] On the basis of the above technical solution, a radially outwardly protruding clamping edge is provided on the top of the clamping seat, and the clamping edge can be clamped on the top of the slot hole of the second beam.

[0013] On the basis of the above technical solution, a convex ring made of elastic material is provided on the inner side wall of the holder, and the convex ring is radially convex inward relative to the inner side wall of the holder.

[0014] Compared with the prior art, the present invention has at least the following advantages:

[0015] 1. The utility model arranges light sources and photoelectric detection elements on both sides of the path along which the test tube rotates following the turntable to form a detection module with a fixed installation position. This makes the detection structure compact and exquisite, and has better structural stability. On the basis of improving the detection process, it can also greatly reduce the incidence of structural failures, thereby extending the service life of the equipment.

[0016] 2. The utility model provides a pressure block pivotally connected to the cover body, which can seal the top opening of the test tube when the cover body is closed, and the turntable can rotate stably while maintaining this posture, thereby reducing the leakage of substances in the test tube during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 Schematic diagram of the structure of an extraction device for food testing in one embodiment;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle card seat;

[0020] Figure 3 This is a schematic structural diagram of a convex ring in one embodiment;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the middle slider in the outward extended state.

[0022] Markings in the figure: 1. Base; 11. First bracket; 12. Sink; 2. First crossbeam; 21. Limit plate; 3. Extraction column; 31. Drain port; 32. Valve; 4. Slider; 41. Second bracket; 42. Second crossbeam; 43. Adjustment knob; 44. Pull ring; 5. Clamping seat; 51. Clamping edge; 52. Opening groove; 53. Raised ring; 6. Test tube; 7. Linear slide rail. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the present invention.

[0024] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically specified.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Combine Figures 1 to 4 This embodiment discloses an extraction device for food testing, including a base 1, a first bracket 11, a first crossbeam 2, an extraction column 3, a slider 4, a second bracket 41, a second crossbeam 42, a test tube 6, a holder 5 and a linear slide 7. The purpose is to provide an extraction device for food testing. By improving the installation structure of the test tube 6, the test tube 6 can be quickly and conveniently installed and removed, thereby improving the efficiency and safety of the extraction operation.

[0028] Specifically, in this embodiment, the base 1 utilizes a horizontally arranged rectangular plate structure. The base 1 utilizes its own counterweight as the device's stable chassis structure, providing a foundation for overall structural stability. Two first brackets 11 are spaced apart on the top of the base 1. These first brackets 11 utilize vertically arranged acrylic panels. A first crossbeam 2 is secured to the top of each first bracket 11. The first crossbeam 2 is horizontally arranged in a left-right orientation. A limit plate 21 is provided at the bottom of the first crossbeam 2. The limit plate 21 engages with the outer wall of the first bracket 11 to form a lateral limit structure.

[0029] Four extraction columns 3 are mounted on the first crossbeam 2. Specifically, the extraction columns 3 are inserted and snapped onto the first crossbeam 2 by engaging through-holes in the first crossbeam 2. The drainage ports 31 of the extraction columns 3 extend through the first crossbeam 2 and face downward. A valve 32 for adjusting the drainage speed is located above the drainage port 31. During operation, the drainage speed of the drainage port 31 can be controlled by a knob switch outside the valve 32. The extraction columns 3 are filled with a filler for selective adsorption, which is conventional technology. The specific structure and operating principle are not detailed here. Those skilled in the art can select and implement a suitable model from the existing technology based on actual operational conditions.

[0030] A slider 4 is provided on the base 1 below the first beam 2, and a linear slide rail 7 is provided between the slider 4 and the base 1. The slider 4 can be horizontally displaced inward and outward relative to the base 1. A second beam 42 is mounted on the slider 4, and four slots are provided on the second beam 42. A holder 5 with a conical structure with a wide top and a narrow bottom is provided in the slots. The holder 5 is made of plastic, and a radial tensioning structure is provided at the bottom of the holder 5. In this embodiment, the radial tensioning structure includes a plurality of open grooves 52 provided at the bottom of the holder 5. The open grooves 52 are distributed axially along the holder 5 and radially penetrate the side walls of the holder 5, so that the bottom end of the holder 5 constitutes a socket structure with a certain elastic expansion capability. This structure enables the test tube 6 to have better wrapping tightness after insertion, reducing the risk of accidental falling off. In addition, this structure is also conducive to adapting to test tubes 6 of different specifications, thereby improving the structural inclusiveness and operability. The holder 5 is used to insert and connect the test tubes 6. The test tubes 6 installed according to the threshold position can be located one by one directly below the drainage port 31 of the extraction column 3. The test tubes 6 are used to collect the liquid discharged from the drainage port 31, and the slider 4 can pull out the four test tubes 6 synchronously and quickly, freeing up more space for disassembly and replacement. After replacement, the slider 4 is pushed inward for quick and convenient reset.

[0031] Further, combined Figure 4 As shown, a groove 12 is provided on the base 1, the slider 4 is arranged in the groove 12, and the linear slide rail 7 is located between the bottom of the slider 4 and the bottom of the groove 12. The linear slide rail 7 in this embodiment is arranged along the horizontal front and rear direction, that is, the slider 4 can slide back and forth conveniently, and the limiting relationship formed by the inner side wall of the groove 12 on the slider 4 is utilized, so that the slider 4 can be accurately positioned when moving inward.

[0032] In order to improve the control convenience of the slider 4, a pull ring 44 is provided on the front side of the slider 4 for convenient push and pull operations.

[0033] like Figure 1 As shown, the slider 4 is provided with two second brackets 41 spaced apart from each other. The second brackets 41 are vertical cylindrical structures. The bottom of the second brackets 41 is fixedly connected to the top surface of the slider 4. An adjustment knob 43 is sleeved on the second bracket 41, and the second crossbeam 42 is clamped on the top of the adjustment knob 43. A handle switch is threadedly connected to the front of the adjustment knob 43. When the handle switch is tightened, its inner end moves radially inward to abut against the outer wall of the second bracket 41, forming a locking and fixing structure. Therefore, the adjustment knob 43 can slide up and down along the second bracket 41 when loose. The adjustment knob 43 can form a height adjustment structure for the second crossbeam 42 on the second bracket 41 by adjusting the tension or looseness of the adjustment knob 43.

[0034] In this embodiment, Figure 2 and Figure 3As shown, the top of the holder 5 is provided with a radially outward-convex clamping edge 51, which can be clamped to the top of the slot of the second crossbeam 42. In order to further improve the installation stability of the test tube 6, the inner wall of the holder 5 is provided with a convex ring 53 made of elastic material (silicone, rubber, etc.). The convex ring 53 is radially inwardly convex relative to the inner wall of the holder 5. The convex ring 53 can increase the friction between the outer wall of the test tube 6 and the inner wall of the holder 5 during actual use. It should be noted that in order to speed up the replacement of the test tube 6, the test tube 6 can be connected to the holder 5 before use. When replacing, the test tube 6 on the second crossbeam 42 is connected to the holder 5 and removed together for overall replacement.

[0035] In this embodiment, the slotted card connection structure between the holder and the second crossbeam enables quick and convenient installation and disassembly of the test tube, avoiding the problem of liquid leakage or test tube damage caused by repeated disassembly and assembly of the test tube in the traditional method; the design of the slider and the linear slide rail enables the test tube to be easily moved to the bottom of the extraction column drain port, eliminating the need to replace the test tube multiple times, thereby improving the efficiency of the extraction operation; the radial tensioning structure at the bottom of the holder and the elastic convex ring on the inner wall enhance the stability and sealing of the test tube fixation, prevent liquid leakage, and ensure the smooth progress of the detection process; the design of the adjustment knob enables the height of the second crossbeam to be adjusted according to the height of the extraction column, adapting to different models of extraction columns, thereby improving the versatility and practicality of the device.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An extraction device for food testing, characterized in that: The invention comprises a base (1), wherein two first brackets (11) are arranged at intervals on the top of the base (1), a first crossbeam (2) is clamped on the top of the first bracket (11), a plurality of extraction columns (3) are arranged on the first crossbeam (2), a liquid discharge port (31) of the extraction column (3) passes through the first crossbeam (2) and is arranged downward, a valve (32) capable of adjusting the liquid discharge speed is arranged above the liquid discharge port (31) on the extraction column (3), and a slider (4) is arranged on the base (1) below the first crossbeam (2). The slider (4) A linear slide rail (7) is provided between the slider and the base (1), and the slider (4) can be displaced horizontally inward and outward relative to the base (1). A second crossbeam (42) is mounted on the slider (4), and a plurality of slots are provided on the second crossbeam (42). A holder (5) having a tapered structure with a wide top and a narrow bottom is provided in the slots. A radial tensioning structure is provided at the bottom of the holder (5). The holder (5) is used for inserting and receiving a test tube (6). The test tubes (6) installed at the threshold position can be located one-to-one directly below the liquid discharge port (31) of the extraction column (3).

2. The extraction device for food testing according to claim 1, characterized in that: A limiting plate (21) is provided at the bottom of the first crossbeam (2), and the limiting plate (21) can be fitted with the outer side wall of the first bracket (11) to form a transverse limiting structure.

3. The extraction device for food testing according to claim 1, characterized in that: The base (1) is provided with a sinking groove (12), the slider (4) is arranged in the sinking groove (12), and the linear slide rail (7) is located between the bottom of the slider (4) and the bottom of the sinking groove (12).

4. The extraction device for food testing according to claim 3, characterized in that: The slider (4) is provided with a pull ring (44) for facilitating push and pull operations.

5. The extraction device for food testing according to claim 3, characterized in that: The slider (4) is provided with two second brackets (41) spaced apart from each other on the left and right sides. The second bracket (41) is sleeved with an adjusting knob (43). The second crossbeam (42) is clamped on the top of the adjusting knob (43).

6. The extraction device for food testing according to claim 5, characterized in that: The adjusting knob (43) can slide up and down along the second bracket (41) in a loose state, and the adjusting knob (43) can form a height adjustment structure of the second crossbeam (42) on the second bracket (41) through a loose state.

7. The extraction device for food testing according to claim 1, characterized in that: The top of the clamping seat (5) is provided with a radially outwardly protruding clamping edge (51), and the clamping edge (51) can be clamped on the top of the slot hole of the second crossbeam (42).

8. The extraction device for food testing according to claim 7, characterized in that: A convex ring (53) made of elastic material is provided on the inner side wall of the clamping seat (5), and the convex ring (53) is radially inwardly convex relative to the inner side wall of the clamping seat (5).

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