Solid-phase extraction assembly

Abstract

The utility model relates to the technical field of sewage treatment, and particularly discloses a solid-phase extraction component, which comprises an extraction unit arranged in a box body, a fastening part used for extracting the extraction unit is arranged in the box body, the fastening part comprises a stress rod connected in the box body in a sliding manner, and a barrier plate is fixedly connected onto the stress rod; a box cover is rotationally connected to the box body, and the box cover is in transmission connection with the stress rod through a linkage mechanism. In the stroke that the box cover covers the box body, the linkage mechanism drives the stress rod to drive the blocking plate to slide towards one side of the extraction unit, the extraction unit is fixed, the stability of the extraction unit during installation is improved, the situation that in the whole extraction assembly transportation process, the extraction unit shakes, and consequently the extraction unit is damaged is reduced, and the extraction efficiency is improved. The practicability of the extraction assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a solid phase extraction component. Background Technology

[0002] Solid-phase extraction is commonly used in scientific research experiments for sample pretreatment. It can separate, purify, and concentrate samples. The principle is to use a solid adsorbent to adsorb the target compound in the liquid sample. The target compound is separated from the sample matrix and interfering substances. Then, it is eluted with an elution solution or heated for adsorption, thereby achieving the separation and enrichment of the target compound. It is widely used in pharmaceutical and food analysis.

[0003] Solid-phase extraction (SPE) evolved from the combination of liquid-solid extraction (LC) and liquid chromatography (LC). It is primarily used for sample separation, purification, and enrichment, with the main purpose of reducing matrix interference and improving detection sensitivity. Based on LC theory, SPE employs selective adsorption and selective elution to enrich, separate, and purify samples. It is a physical extraction process involving both liquid and solid phases; it can also be approximated as a simple chromatographic process. Specifically, SPE utilizes the separation principles of selective adsorption and selective elution in LC. A common method involves passing a liquid sample solution through an adsorbent to retain the analyte, then rinsing away impurities with a solvent of appropriate strength, followed by rapid elution of the analyte with a small amount of good solvent. This achieves rapid separation, purification, and concentration. Alternatively, it can selectively adsorb interfering impurities while allowing the analyte to elute; or simultaneously adsorb impurities and the analyte, then selectively elute the analyte with a suitable solvent.

[0004] However, existing extraction devices are large and inconvenient to carry. To address this issue, portable extraction devices have also been developed, comprising a housing and an extraction unit installed inside the housing. However, during transportation, the extraction unit inside the housing may shake, potentially causing damage. Furthermore, fixing the extraction unit inside the housing with fasteners makes it difficult to remove and place it, presenting certain drawbacks. Utility Model Content

[0005] The purpose of this invention is to provide a solid-phase extraction component to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solid-phase extraction assembly, comprising an extraction unit installed inside a housing, wherein a fastening part for the extraction unit is provided inside the housing, the fastening part comprising a force-bearing rod slidably connected inside the housing, and a baffle plate fixedly connected to the force-bearing rod; a housing cover is rotatably connected to the housing, and the housing cover and the force-bearing rod are connected by a linkage mechanism. When the housing cover is closed on the housing, the force-bearing rod is driven by the transmission mechanism to slide towards the extraction unit, thereby fixing the extraction unit.

[0007] Furthermore, the lid is rotatably connected to the box body via a pivot, and the linkage mechanism includes a linkage rod that is vertically slidably connected inside the box body. A protrusion is fixedly connected to the pivot, and an adapter groove that matches the protrusion is provided on the linkage rod. During the rotation of the pivot, the protrusion abuts against the adapter groove to drive the linkage rod to slide downward.

[0008] Furthermore, a wedge-shaped groove is provided on the side of the force-bearing rod away from the blocking plate, and a wedge-shaped block that matches the wedge-shaped groove is fixedly connected to the bottom of the linkage rod, with the wedge-shaped block abutting against the wedge-shaped groove.

[0009] Furthermore, a support frame is rotatably connected inside the box, and an extraction unit is installed inside the support frame; a locking part is provided between the linkage rod and the support frame.

[0010] Furthermore, the snap-fit ​​part includes a connecting rod fixedly connected to the linkage rod, a snap-fit ​​rod fixedly connected to the connecting rod, and a snap-fit ​​groove is provided on the side wall of the support frame, wherein the snap-fit ​​rod snaps into the snap-fit ​​groove.

[0011] Furthermore, a protruding plate is fixedly connected to the lid, and an installation groove adapted to the protruding plate is provided on the box body. When the lid and the box body are closed, the protruding plate is engaged in the installation groove.

[0012] Furthermore, a locking element is provided between the convex plate and the box body to lock the box cover onto the box body.

[0013] Furthermore, the locking component includes a pressure rod slidably connected to the housing, a locking rod fixedly connected to the pressure rod, a positioning spring provided between the pressure rod and the mounting groove, and a locking groove adapted to the locking rod provided on the protruding plate, the elastic force of the positioning spring driving the locking rod to engage in the locking groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This solid-phase extraction assembly, through the cooperation between the extraction unit, fastening part, force-bearing rod, baffle plate, box cover and linkage mechanism, etc., allows the extraction unit to be installed inside the box when the extraction assembly needs to be transported. Then, the box cover is closed on the box. During the stroke of the box cover being closed on the box, the linkage mechanism drives the force-bearing rod to slide the baffle plate to the side of the extraction unit, thus fixing the extraction unit. This improves the stability of the extraction unit during installation, reduces the possibility of the extraction unit shaking and being damaged during the transportation of the entire extraction assembly, and improves the practicality of the extraction assembly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of another state of the support frame provided in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the box body in its closed state provided in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the box provided in an embodiment of the present utility model;

[0020] Figure 5 This is a partial structural diagram of the linkage mechanism provided in an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the locking component structure provided in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Box cover; 3. Support frame; 4. Extraction unit; 5. Switching valve; 6. Bearing cylinder; 7. Connecting pipe; 8. Rotating shaft; 9. Protrusion; 10. Linkage rod; 11. Adaptor groove; 12. Connecting rod; 13. Snap-fit ​​rod; 14. Force rod; 15. Blocking plate; 16. Return spring; 17. Wedge groove; 18. Protrusion plate; 19. Locking groove; 20. Locking rod; 21. Pressure rod; 22. Positioning spring. Detailed Implementation

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a solid phase extraction assembly, including an extraction unit 4 installed inside a housing 1. The housing 1 is provided with a fastening part for the extraction unit 4. The fastening part includes a force-bearing rod 14 slidably connected inside the housing 1, and a baffle plate 15 is fixedly connected to the force-bearing rod 14. A housing cover 2 is rotatably connected to the housing 1. The housing cover 2 and the force-bearing rod 14 are connected by a linkage mechanism. When the housing cover 2 is closed on the housing 1, the force-bearing rod 14 is driven by the transmission mechanism to slide the baffle plate 15 to one side of the extraction unit 4, thereby fixing the extraction unit 4.

[0025] Specifically, the solid-phase extraction assembly includes an extraction unit 4 installed inside a housing 1. The housing 1 has a fastening mechanism for the extraction unit 4, which restricts its movement, improves stability during installation, and reduces the risk of damage due to shaking during transport. Specifically, the fastening mechanism includes a force-bearing rod 14 slidably connected inside the housing 1, with a baffle plate 15 fixedly connected to the rod 14. The baffle plate 15 restricts contact between the extraction unit 4 and the housing 1. A cover 2 is rotatably connected to the housing 1, and the cover 2 is connected to the force-bearing rod 14 via a linkage mechanism. When the cover 2 is closed on the housing 1, the linkage mechanism drives the force-bearing rod 14 to slide the baffle plate 15 towards the extraction unit 4, thus securing the extraction unit 4. Therefore, during use, when the extraction assembly needs to be transported, the extraction unit 4 is installed inside the housing 1, and then the housing cover 2 is closed on the housing 1. During the stroke of the housing cover 2 on the housing 1, the linkage mechanism drives the force rod 14 to slide the baffle plate 15 to one side of the extraction unit 4, thereby fixing the extraction unit 4, improving the stability of the extraction unit 4 during installation, reducing the possibility of the extraction unit 4 shaking and being damaged during the transportation of the entire extraction assembly, and improving the practicality of the extraction assembly.

[0026] Specifically, a return spring 16 is provided between the housing 1 and the force rod 14. The elastic force of the return spring 16 drives the baffle plate 15 to separate from the extraction unit 4. At this time, the restriction on the extraction unit 4 can be released, making it easier to disassemble the extraction unit 4 and improving the performance.

[0027] In the embodiments provided by this utility model, the box cover 2 is rotatably connected to the box body 1 via a rotating shaft 8. The linkage mechanism includes a linkage rod 10 that is vertically slidably connected inside the box body 1. A protrusion 9 is fixedly connected to the rotating shaft 8. An adapter groove 11 that matches the protrusion 9 is provided on the linkage rod 10. During the rotation of the rotating shaft 8, the protrusion 9 abuts against the adapter groove 11 to drive the linkage rod 10 to slide downward to meet the working requirements.

[0028] In the embodiment provided by this utility model, a wedge-shaped groove 17 is provided on the side of the force-bearing rod 14 away from the blocking plate 15, and a wedge-shaped block adapted to the wedge-shaped groove 17 is fixedly connected to the bottom of the linkage rod 10. The wedge-shaped block abuts against the wedge-shaped groove 17. When the linkage rod 10 slides downward, the force-bearing rod 14 is driven to slide horizontally through the cooperation between the wedge-shaped block and the wedge-shaped groove 17.

[0029] In the embodiments provided by this utility model, a support frame 3 is rotatably connected inside the housing 1. Specifically, the support frame 3 is rotatably connected inside the housing 1 with damping, facilitating the storage of the extraction assembly. An extraction unit is installed inside the support frame 3. Specifically, the extraction unit includes an extraction cylinder mounted on the support frame 3 by fasteners. A piston rod is vertically slidably connected inside the extraction cylinder, and a power component is provided inside the extraction cylinder to drive the piston rod to slide vertically inside the extraction cylinder. A carrier cylinder 6 for storing the liquid to be tested is also provided inside the housing 1. The extraction cylinder and the carrier cylinder 6 are connected by a connecting pipe 7. More specifically, a switching valve 5 is provided on the extraction unit 4, and the carrier cylinder 6 and the switching valve 5 are connected by another connecting pipe 7, facilitating the use of the extraction assembly.

[0030] In the embodiments provided by this utility model, the snap-fit ​​part includes a connecting rod 12 fixedly connected to the linkage rod, a snap-fit ​​rod 13 fixedly connected to the connecting rod 12, and a snap-fit ​​groove is provided on the side wall of the support frame 3. The snap-fit ​​rod 13 snaps into the snap-fit ​​groove, thereby improving the stability of the support frame 3 during installation.

[0031] In the embodiments provided by this utility model, a protruding plate 18 is fixedly connected to the lid 2, and an installation groove adapted to the protruding plate 18 is provided on the box body 1. When the lid 2 is closed with the box body 1, the protrusion 9 is engaged in the installation groove. A locking member is provided between the protruding plate 18 and the box body 1 to lock the lid 2 on the box body 1.

[0032] In the embodiments provided by this utility model, the locking component includes a pressure rod 21 slidably connected to the housing 1, a locking rod 20 fixedly connected to the pressure rod 21, a positioning spring 22 provided between the pressure rod 21 and the mounting groove, and a locking groove 19 adapted to the locking rod 20 on the protruding plate 18. The elastic force of the positioning spring 22 drives the locking rod 20 to engage in the locking groove 19, improving the stability of the housing 1 and the lid 2 during installation. When it is necessary to separate the housing 1 from the lid 2, the pressure rod 21 is pressed so that the pressure rod 21 drives the locking rod 20 to slide out from the locking groove 19.

[0033] It should be noted that all electrical equipment involved in this application can be powered by batteries or external power sources.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid-phase extraction assembly, comprising an extraction unit (4) installed inside a housing (1), characterized in that: The box (1) is provided with a fastening part for the extraction unit (4). The fastening part includes a force rod (14) slidably connected inside the box (1). A baffle plate (15) is fixedly connected to the force rod (14). A lid (2) is rotatably connected to the box body (1), and the lid (2) is connected to the force rod (14) through a linkage mechanism. During the stroke of the lid (2) covering the box body (1), the transmission mechanism drives the force rod (14) to move the baffle plate (15) to slide towards the extraction unit (4) and fix the extraction unit (4).

2. A solid-phase extraction assembly according to claim 1, characterized in that: The lid (2) is rotatably connected to the body (1) via a pivot (8). The linkage mechanism includes a linkage rod (10) that is vertically slidably connected inside the body (1). A protrusion (9) is fixedly connected to the pivot (8). An adapter groove (11) that matches the protrusion (9) is provided on the linkage rod (10). During the rotation of the pivot (8), the protrusion (9) abuts against the adapter groove (11) to drive the linkage rod (10) to slide downward.

3. A solid-phase extraction assembly according to claim 2, characterized in that: The force-bearing rod (14) has a wedge-shaped groove (17) on the side away from the baffle plate (15). The bottom of the linkage rod (10) is fixedly connected to a wedge-shaped block that matches the wedge-shaped groove (17). The wedge-shaped block abuts against the wedge-shaped groove (17).

4. A solid-phase extraction assembly according to claim 2, characterized in that: The box (1) is rotatably connected to a support frame (3), and an extraction unit is installed inside the support frame (3); a snap-fit ​​part is provided between the linkage rod (10) and the support frame (3).

5. A solid-phase extraction assembly according to claim 4, characterized in that: The snap-fit ​​part includes a connecting rod (12) fixedly connected to the linkage rod, a snap-fit ​​rod (13) fixedly connected to the connecting rod (12), and a snap-fit ​​groove is provided on the side wall of the support frame (3), and the snap-fit ​​rod (13) snaps into the snap-fit ​​groove.

6. A solid-phase extraction assembly according to claim 1, characterized in that: A protruding plate (18) is fixedly connected to the cover (2), and an installation groove adapted to the protruding plate (18) is provided on the box body (1). When the cover (2) and the box body (1) are closed, the protrusion (9) is engaged in the installation groove.

7. A solid-phase extraction assembly according to claim 6, characterized in that: A locking element is provided between the protruding plate (18) and the box body (1) to lock the box cover (2) onto the box body (1).

8. A solid-phase extraction assembly according to claim 7, characterized in that: The locking component includes a pressure rod (21) slidably connected to the housing (1), a locking rod (20) fixedly connected to the pressure rod (21), a positioning spring (22) provided between the pressure rod (21) and the mounting groove, and a locking groove (19) adapted to the locking rod (20) is provided on the protruding plate (18), and the elastic force of the positioning spring (22) drives the locking rod (20) to be engaged in the locking groove (19).

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