Solid-phase extraction device

Abstract

The utility model relates to the technical field of medical instruments, and provides a solid-phase extraction device, which comprises a cover plate, a flow control valve, a diversion trench and a waste liquid collection box, and is characterized in that the flow control valve is mounted at the top of the cover plate in an inserting manner; the flow guide groove comprises a flow guide plate, a butt strap, a side baffle and a positioning plate, and the flow guide plate is mounted below the cover plate; the lapping plates are obliquely arranged at the two ends of the flow guide plate, and the side baffles are fixedly arranged on the two sides of the flow guide plate and the lapping plates; the positioning plates are fixedly arranged at the two ends of the bottom of the flow guide plate, and the positioning plates are perpendicular to the cover plate; the flow guide plate is arranged below the cover plate, the waste liquid collecting boxes are arranged at the two ends of the flow guide plate, waste liquid flows into the waste liquid collecting boxes under the action of the flow guide plate, the flow guide plate is installed between the cover plate and the cylinder body, and the flow guide groove can be directly drawn out after use. The cover plate is combined with the cylinder body, the operation process is simplified, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to sample pre -treatment technical field especially, relates to a solid -phase extraction device. BACKGROUND

[0002] Solid phase extraction is a technique for sample preparation, mainly used for extracting and purifying target analytes from complex matrices, solid phase extraction device usually includes a column, which is filled with a specific adsorbent material, through which the target compounds can be effectively separated and concentrated.

[0003] The utility model discloses a solid -phase extraction device in the utility model discloses a solid -phase extraction device, including the casing, the opening of the casing top is equipped with the cover, install a plurality of through channels on the cover, a plurality of through channels are centrally installed on the one side of cover board;The bottom plate of casing is placed with a support bottom plate, and the test tube rack and waste liquid collection box are arranged side by side on the support bottom plate, the test tube rack is located directly below a plurality of through channels, and the waste liquid collection box is located directly below the side of the cover plate not installed a plurality of through channels, the casing of the application can install the test tube rack and waste liquid collection box simultaneously, so that the step of replacing the collection container with the test tube rack in the process of detection is saved, thereby simplifying the experimental steps and effectively improving the detection efficiency.

[0004] In the above technical scheme, in order to simplify the experimental steps, the waste liquid collection box is directly arranged in the casing, however, in actual operation, the cover plate also needs to be lifted, then rotated, and then covered, and when rotating, the guide needle at the bottom of the cover plate needs to be avoided, which has certain operation difficulty, and the waste liquid collection box occupies additional space in the casing, so that the volume of the casing and the cover plate is increased, which has certain limitation. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a solid -phase extraction device, simplifies operation procedure, and is convenient for collecting waste liquid.

[0006] The technical scheme of the utility model is as follows: the utility model provides a solid -phase extraction device, including cover, flow control valve, guide groove and waste liquid collection box, wherein,

[0007] The flow control valve is inserted and installed at the top of the cover plate;

[0008] The guide groove includes guide plate, clamping plate, side baffle and positioning plate, the guide plate is installed below the cover plate, the clamping plate is obliquely arranged at both ends of the guide plate, and the side baffle is fixedly arranged at both sides of the guide plate and the clamping plate, the positioning plate is fixedly arranged at both ends of the bottom of the guide plate, and the positioning plate is perpendicular to the cover plate;

[0009] The waste liquid collecting box is arranged at both ends of the flow guide groove.

[0010] More preferably, the flow guide plate is a bent plate structure, and the flow guide plate is bent downward from the middle position to both ends.

[0011] More preferably, a long groove is formed in the top of the side baffle.

[0012] On the basis of the above technical scheme, preferably, the utility model also includes a cover plate support, the cover plate support is screwed and installed at the bottom of the cover plate, and the waste liquid collecting box is installed on the cover plate support.

[0013] More preferably, the waste liquid collecting box comprises a box body, a connecting plate and a mounting plate, the box body is installed at both ends of the flow guide groove, a connecting plate is fixedly arranged at the top of one side of the box body, the connecting plate abuts against the bottom of the baffle, the mounting plate is fixedly arranged at both ends of the box body, the mounting plate is movably installed on the cover plate support in a sleeved manner, and the mounting plate is limited by a nut.

[0014] On the basis of the above technical scheme, preferably, the utility model also includes a cylinder, a vacuum regulating valve and a test tube rack, the cylinder is installed below the flow guide groove, the top of both ends of the cylinder is inserted and installed between the two positioning plates, the vacuum regulating valve is fixedly installed on the cylinder, and the test tube rack is placed in the cylinder.

[0015] More preferably, the test tube rack comprises a supporting plate, a support column, a limiting ring and a placing rack, the support column is inserted and installed at the top of the supporting plate, a plurality of limiting rings are uniformly arranged on the support column, the placing rack is installed on the support column, and the placing rack is clamped with the limiting ring.

[0016] More preferably, the test tube rack further comprises a handle, a plug rod, a limiting block, a torsion spring and a buckle plate, the four corners of the placing rack are provided with the buckle plate, the placing rack is fixed on the support column through the buckle plate, one end of the buckle plate is provided with the handle, an inner side wall of the handle is fixedly provided with the plug rod, the handle is inserted and movably connected with the placing rack through the plug rod, an end of the plug rod is provided with the limiting block for limiting, and a torsion spring is arranged between the handle and the placing rack and is sleeved and installed outside the plug rod.

[0017] More preferably, circular arc grooves for clamping with the support column are formed in the four corners of the placing rack and the inner side of the buckle plate, and the two grooves are circular when the placing rack and the buckle plate are combined.

[0018] The solid phase extraction device has the following beneficial effects compared with the prior art:

[0019] (1) through the setting of the flow guide plate under the cover plate, and the waste liquid collection box is set at both ends of the flow guide plate, under the action of the flow guide plate, the waste liquid flows into the waste liquid collection box, and the flow guide plate is installed between the cover plate and the cylinder body, after use, the flow guide groove can be directly extracted, so that the cover plate is combined with the cylinder body, the operation process is simplified, operation is facilitated, and the waste liquid collection box is installed on the cover plate support at the bottom of the cover plate, which does not affect the overall use.

[0020] (2) through the setting of the buckle plate at the four corners of the placing rack, and the placing rack is installed on the support column through the buckle plate, and the buckle plate is movably connected with the placing rack, the buckle plate is separated from the placing rack by pressing the handle, the buckle plate is separated from the limiting ring, so that the installation height of the placing rack is adjusted, the placing of test tubes of different sizes is suitable, the operation is simple, the use is convenient, and the operation process is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 It is a perspective view of a solid phase extraction device of the present application;

[0023] Figure 2 It is a front view structure diagram of a solid phase extraction device of the present application;

[0024] Figure 3 It is an explosion structure diagram of the flow guide groove in a solid phase extraction device of the present application;

[0025] Figure 4 It is an internal perspective view of a cylinder body of a solid phase extraction device of the present application;

[0026] Figure 5 It is a perspective view of a test tube rack in a solid phase extraction device of the present application;

[0027] Figure 6 It is a local enlarged view of the placing rack in a solid phase extraction device of the present application.

[0028] Among them: 1. Cover plate; 2. Flow control valve; 3. Guide groove; 31. Guide plate; 32. Strap plate; 33. Side baffle; 34. Positioning plate; 4. Cover plate bracket; 5. Waste liquid collection box; 51. Box body; 52. Connecting plate; 53. Mounting plate; 6. Cylinder body; 7. Vacuum regulating valve; 8. Test tube rack; 81. Support plate; 82. Support pillar; 83. Limiting ring; 84. Placement rack; 85. Handle; 86. Insert rod; 87. Limiting block; 88. Torsion spring; 89. Buckle plate. DETAILED DESCRIPTION

[0029] The following will be combined with the specific embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only 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 efforts are within the scope of protection of the present invention.

[0030] like Figures 1-6 As shown, a solid phase extraction device of the present invention includes a cover plate 1, a flow control valve 2, a guide groove 3, a cover plate bracket 4, a waste liquid collection box 5, a cylinder 6, a vacuum regulating valve 7 and a test tube rack 8.

[0031] The flow control valve 2 is plugged and installed on the top of the cover plate 1 .

[0032] The guide trough 3 includes a guide plate 31, a strap plate 32, a side baffle 33 and a positioning plate 34. The guide plate 31 is installed under the cover plate 1. The guide plate 31 is a bent plate-like structure. The guide plate 31 bends downward from the middle position to both ends, and has a good guiding effect, so that the waste liquid flowing out of the flow control valve 2 flows toward the two ends of the guide plate 31; and the side baffles 33 are fixedly arranged on both sides of the guide plate 31 and the strap plate 32. The side baffles 33 have a blocking effect on the guide plate 31 to prevent the waste liquid from flowing out from the two sides of the guide plate 31. A long groove is provided on the top of the side baffle 33. The depth of the groove should be greater than the length of the guide needle at the bottom of the cover plate 1 to prevent the guide needle at the bottom of the cover plate 1 from being obstructed by the side baffles 33 when the guide trough 3 is pulled out; the positioning plates 34 are fixedly arranged at both ends of the bottom of the guide plate 31, and the positioning plates 34 are perpendicular to the cover plate 1.

[0033] For the convenience of waste liquid collection, waste liquid collection box 5 is arranged at both ends of the flow guide groove 3, the cover plate support 4 is screwed and installed at the bottom of the cover plate 1, and the waste liquid collection box 5 is installed on the cover plate support 4. The waste liquid collection box 5 comprises a box body 51, a connecting plate 52 and a mounting plate 53. The box body 51 is installed at both ends of the flow guide groove 3, and the waste liquid is discharged into the box body 51 through the flow guide effect of the flow guide groove 3; the connecting plate 52 is fixedly arranged at the top of one side of the box body 51, the connecting plate 32 is arranged at both ends of the flow guide plate 31 in an inclined manner, and the connecting plate 52 abuts against the bottom of the connecting plate 32, so that the waste liquid can flow directly into the box body 51 along the connecting plate 32 and the connecting plate 52, and meanwhile, the waste liquid is not hindered from being discharged from the flow guide groove 3. In addition, the length of the connecting plate 32 should be slightly smaller than the length of the connecting plate 52, so as to prevent the waste liquid from leaking out from both ends of the connecting plate 52.

[0034] As shown in Figure 3 , the mounting plate 53 is fixedly arranged at both ends of the box body 51, and the mounting plate 53 is movably installed on the cover plate support 4 in a sleeved manner. The mounting plate 53 is limited by the nut, so as to adjust the installation height of the waste liquid collection box 5, and avoid the waste liquid from leaking out from the gap.

[0035] As shown in Figure 2 , the cylinder body 6 is installed below the flow guide groove 3, and the top of both ends of the cylinder body 6 is inserted and installed between the two positioning plates 34, so as to position the installation of the flow guide groove 3, facilitate the dismounting of the flow guide groove 3, and combine the cover plate 1 with the cylinder body 6 after the flow guide groove 3 is dismounted, so as to simplify the operation process and facilitate the operation. The vacuum regulating valve 7 is fixedly installed on the cylinder body 6, so as to adjust the vacuum degree in the cylinder body 6.

[0036] In order to facilitate the placement of the test tube, the test tube rack 8 is placed in the cylinder body 6. The test tube rack 8 comprises a supporting plate 81, a support column 82, a limiting ring 83 and a placing rack 84. The support column 82 is inserted and installed at the top of the supporting plate 81, and a plurality of limiting rings 83 are uniformly arranged on the support column 82. The placing rack 84 is installed on the support column 82, and the placing rack 84 is clamped with the limiting ring 83, so as to support and limit the placing rack 84.

[0037] As shown in Figure 5 , the four corners of the placing rack 84 are provided with buckling plates 89, and the placing rack 84 is fixed on the support column 82 through the buckling plates 89. The four corners of the placing rack 84 and the inner side of the buckling plate 89 are provided with arc-shaped grooves for clamping with the support column 82. When the placing rack 84 and the buckling plate 89 are combined, the two grooves are circular by splicing, so as to realize the connection with the support column 82.

[0038] As shown in Figure 6As shown, one end of the buckle plate 89 is provided with a handle 85, and an inner side wall of the handle 85 is fixedly provided with an insertion rod 86; the handle 85 is inserted and movably connected with the placing rack 84 through the insertion rod 86, and the opening and closing of the buckle plate 89 is realized through the rotation of the handle 85, so that the installation height of the placing rack 84 is adjusted, the end of the insertion rod 86 is provided with a limiting block 87 for limiting, the insertion rod 86 is limited, and the handle 85 is prevented from falling off; the handle 85 and the placing rack 84 are provided with a torsion spring 88, and the torsion spring 88 is sleeved and installed outside the insertion rod 86; the torsion spring 88 elastically supports the handle 85, realizes the automatic rebound of the handle 85, and prevents the placing rack 84 from falling off.

[0039] The use method of the solid phase extraction device is as follows:

[0040] In use, first, the distance between the placing rack 84 and the supporting plate 81 is adjusted according to the length of the test tube, the buckle plate 89 is opened by pressing the handle 85, the placing rack 84 is adjusted to the appropriate height, the handle 85 is loosened, the buckle plate 89 rebounds under the action of the torsion spring 88, the buckle plate 89 clamps the support column 82, and is fixed under the action of the limiting ring 83, then the flow guide groove 3 is placed between the cover plate 1 and the cylinder body 6, the waste liquid collecting box 5 is installed on the cover plate support 4, the height of the waste liquid collecting box 5 is adjusted, the web plate 52 of the waste liquid collecting box 5 is placed below the clamping plate 32, the waste liquid discharged from the flow control valve 2 is discharged into the box body 51 of the waste liquid collecting box 5 under the action of the flow guide plate 31, after washing, the flow guide groove 3 is pulled out, the cover plate 1 is combined with the cylinder body 6, and then the extraction operation can be performed.

[0041] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A solid phase extraction device, characterized by: It comprises a cover plate (1), a flow control valve (2), a flow guide groove (3) and a waste liquid collection box (5), wherein, The flow control valve (2) is inserted and installed on the top of the cover plate (1); The flow guide groove (3) comprises a flow guide plate (31), a lap plate (32), a side baffle (33) and a positioning plate (34), the flow guide plate (31) is installed below the cover plate (1); the lap plate (32) is obliquely arranged at both ends of the flow guide plate (31), and the side baffle (33) is fixedly arranged at both sides of the flow guide plate (31) and the lap plate (32); the positioning plate (34) is fixedly arranged at both ends of the bottom of the flow guide plate (31), and the positioning plate (34) is perpendicular to the cover plate (1); The waste liquid collection box (5) is arranged at both ends of the flow guide groove (3).

2. A solid phase extraction device as claimed in claim 1, characterised in that: The flow guide plate (31) is a bent plate structure, and the flow guide plate (31) is bent downward from the middle position to both ends.

3. A solid phase extraction device as claimed in claim 1, characterized in that: The top of the side baffle (33) is provided with a groove in a strip shape.

4. A solid phase extraction device as claimed in claim 1, characterized in that: It also comprises a cover plate support (4), which is screwed and installed on the bottom of the cover plate (1), and the waste liquid collection box (5) is installed on the cover plate support (4).

5. A solid phase extraction device as claimed in claim 4, characterised in that: The waste liquid collection box (5) comprises a box body (51), a connecting plate (52) and a mounting plate (53), the box body (51) is installed at both ends of the flow guide groove (3); a connecting plate (52) is fixedly arranged at the top of one side of the box body (51), and the connecting plate (52) abuts against the bottom of the lap plate (32); the mounting plate (53) is fixedly arranged at both ends of the box body (51), and the mounting plate (53) is movably installed on the cover plate support (4) by sleeving; and the mounting plate (53) is limited by a nut.

6. The solid phase extraction device according to claim 1, wherein: It also comprises a cylinder body (6), a vacuum regulating valve (7) and a test tube rack (8), the cylinder body (6) is installed below the flow guide groove (3), and the top of both ends of the cylinder body (6) is inserted and installed between the two positioning plates (34); the vacuum regulating valve (7) is fixedly installed on the cylinder body (6); and the test tube rack (8) is placed in the cylinder body (6).

7. A solid phase extraction device as claimed in claim 6, characterised in that: The test tube rack (8) comprises a supporting plate (81), a support column (82), a limiting ring (83) and a placing rack (84), the support column (82) is inserted and installed on the top of the supporting plate (81), and a plurality of limiting rings (83) are uniformly arranged on the support column (82); the placing rack (84) is installed on the support column (82), and the placing rack (84) is clamped with the limiting ring (83).

8. A solid phase extraction device as claimed in claim 7, characterised in that: The test tube rack (8) further comprises a handle (85), a plug rod (86), a limiting block (87), a torsion spring (88) and a buckle plate (89), four corners of the placing rack (84) are provided with the buckle plate (89), the placing rack (84) is fixed on the support column (82) through the buckle plate (89); one end of the buckle plate (89) is provided with the handle (85), and the inner side wall of the handle (85) is fixedly provided with the plug rod (86); the handle (85) is inserted with the placing rack (84) through the plug rod (86) and is movably connected, and the end of the plug rod (86) is provided with the limiting block (87) for limiting; the handle (85) and the placing rack (84) are provided with the torsion spring (88), and the torsion spring (88) is sleeved and mounted on the outside of the plug rod (86).

9. A solid phase extraction device as claimed in claim 8, characterised in that: Four corners of the placing rack (84) and the inner side of the buckle plate (89) are provided with circular-arc-shaped grooves for clamping the support column (82), when the placing rack (84) and the buckle plate (89) are combined, the two grooves are circular through splicing.

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