A SPE column placement automatic sensing device

Abstract

The utility model relates to the technical field of extraction detection provides a kind of SPE column placement automatic sensing device, including storage bin, the storage bin is rectangle, and inside is empty cavity, PCB board is fixedly installed in the middle part of storage bin inner cavity, and the storage bin inner cavity is fixedly installed with placement plate above PCB board, this SPE column placement automatic sensing device, when every placement one SPE column, will press the sensing touch point of the edge of each induction hole of PCB board, the opening and closing action of sensing touch point informs central control to know current position, whether there is SPE column, to provide data for later stage clamping, greatly improve the degree of automation.

Description

Technical Field

[0001] This utility model relates to the field of extraction detection technology, and in particular to an automatic sensing device for SPE column placement. Background Technology

[0002] SPE columns, short for solid phase extraction columns, are sample pretreatment devices evolved from chromatography columns, used for extraction, separation, and concentration. They are primarily used for sample pretreatment of target compounds in various food, agricultural and livestock products, environmental samples, and biological samples. Solid phase extraction technology has been widely adopted in many (GB / T) and industry analytical standards.

[0003] The automatic sensing of the extraction column in a fully automated solid phase extraction instrument is traditionally difficult to automate and make intelligent. It often requires manual assistance from the experimenter to position and clamp the extraction column, which greatly reduces the automation level of the fully automated solid phase extraction instrument. At the same time, the extraction column is easily damaged by external impacts when placed in the placement chamber. Utility Model Content

[0004] In order to solve the problems existing in the background art, the present invention provides an automatic sensing device for SPE column placement, so as to solve the problems mentioned in the background art.

[0005] To address the problems in the existing technology, this utility model provides an automatic sensing device for SPE column placement, including a placement chamber. The placement chamber is rectangular and has an internal cavity. A PCB board is fixedly installed in the middle of the cavity of the placement chamber, and a placement plate is fixedly installed above the PCB board in the cavity of the placement chamber.

[0006] Specifically, the PCB board has multiple evenly distributed sensing holes that extend through its surface, and a sensing contact is fixedly provided at the edge of each sensing hole.

[0007] Specifically, the surface of the placement chamber is provided with multiple evenly distributed placement holes, and the inner wall of the placement holes is provided with multiple sliding grooves evenly distributed along the circumference of the placement holes. The sliding grooves are slidably connected to abutment blocks, and a spring is provided between the abutment blocks and the inner wall of the sliding grooves.

[0008] Specifically, the two ends of the spring are fixedly connected to the inner wall of the groove and the side wall of the abutment block, respectively.

[0009] Specifically, one edge of the abutment block has a chamfer.

[0010] Specifically, the positions and numbers of the sensing holes and placement holes correspond to each other.

[0011] The beneficial effects of this utility model are:

[0012] (1) The automatic sensing device for placing SPE pillars will press down the sensing contact on the edge of each sensing hole on the PCB board when each SPE pillar is placed. The opening and closing action of the sensing contact will notify the central control to know the current position and whether an SPE pillar has been placed, thereby providing data for subsequent clamping and greatly improving the degree of automation.

[0013] (2) The SPE column is placed with an automatic sensing device. When an SPE column is placed, the side wall of the SPE column will abut against the abutment block that is slidably connected to the inner wall of the placement hole. The abutment block will retract into the groove under the pressure of the SPE column, and the spring will deform under its own elastic force. Multiple abutment blocks will clamp the SPE column to prevent the SPE column from being damaged by external impact. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the PCB board structure of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0019] Figure 5 This is a schematic diagram of the placement plate structure of this utility model;

[0020] Figure 6 This utility model Figure 5 Enlarged structural diagram at point B;

[0021] Figure 7 This is a partial structural schematic diagram of the present invention.

[0022] In the diagram: 1. Placement compartment; 11. PCB board; 111. Sensing hole; 112. Sensing contact; 12. Placement plate; 121. Placement hole; 122. Slide groove; 123. Abutment block; 124. Spring; 125. Chamfer. Detailed Implementation

[0023] To make the technical methods, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1-7The present invention discloses an automatic sensing device for SPE column placement, comprising a placement chamber 1, which is rectangular and has an internal cavity. A PCB board 11 is fixedly installed in the middle of the cavity of the placement chamber 1, and a placement plate 12 is fixedly installed above the PCB board 11 in the cavity of the placement chamber 1.

[0025] Furthermore, the PCB board 11 has a plurality of evenly distributed sensing holes 111 through its surface, and each sensing hole 111 has a sensing contact 112 fixedly disposed at its edge.

[0026] The aforementioned automatic sensing device for SPE column placement presses down the sensing contact 112 on the edge of each sensing hole 111 on the PCB board 11 when an SPE column is placed. The opening and closing action of the sensing contact 112 notifies the central control to know the current position and whether an SPE column already exists, thereby providing data for subsequent clamping and greatly improving the degree of automation.

[0027] Furthermore, the surface of the placement chamber 1 is provided with a plurality of evenly distributed placement holes 121, and the inner wall of the placement holes 121 is provided with a plurality of sliding grooves 122 evenly distributed along the circumference of the placement holes 121. The sliding grooves 122 are slidably connected to abutment blocks 123, and a spring 124 is provided between the abutment blocks 123 and the inner wall of the sliding grooves 122.

[0028] The aforementioned automatic sensing device for SPE column placement works as follows: each time an SPE column is placed, the side wall of the SPE column will abut against the abutment block 123 that is slidably connected to the inner wall of the placement hole 121. Under the pressure of the SPE column, the abutment block 123 retracts into the slide groove 122, and the spring 124 deforms under its own elastic force. Multiple abutment blocks 123 clamp the SPE column to prevent the SPE column from being damaged by external impact.

[0029] Furthermore, the two ends of the spring 124 are fixedly connected to the inner wall of the slide groove 122 and the side wall of the abutment block 123, respectively, which facilitates the movement of the abutment block 123 by the spring 124 under its own elastic force.

[0030] Furthermore, one side edge of the abutment block 123 is chamfered 125 to facilitate sliding engagement with the SPE column.

[0031] Furthermore, the position and number of the sensing holes 111 and the placement holes 121 correspond to each other.

[0032] Working principle

[0033] In use, the operator places the SPE column sequentially through the placement hole 121 and the sensing hole 111 into the placement chamber 1. Each time an SPE column is placed, the side wall of the SPE column will abut against the abutment block 123 that is slidably connected to the inner wall of the placement hole 121. Under the pressure of the SPE column, the abutment block 123 retracts into the slide groove 122, and the spring 124 deforms under its own elastic force. Multiple abutment blocks 123 clamp the SPE column to prevent it from being damaged by external impact. At the same time, each time an SPE column is placed, the sensing contact 112 on the edge of each sensing hole 111 of the PCB board 11 will be pressed down. The opening and closing action of the sensing contact 112 notifies the central control to know the current position and whether an SPE column has been placed, thus providing data for subsequent clamping and greatly improving the degree of automation.

Claims

1. An automatic sensing device for SPE column placement, characterized in that, include: Placement compartment (1), wherein the placement compartment (1) is rectangular and has an internal cavity; PCB board (11), the PCB board (11) is fixedly installed in the middle of the inner cavity of the placement compartment (1); Placement plate (12), the placement compartment (1) is located above the PCB board (11) and the placement plate (12) is fixedly installed thereon; The PCB board (11) has a plurality of uniformly distributed sensing holes (111) through it, and a sensing contact (112) is fixedly provided at the edge of each sensing hole (111).

2. The automatic sensing device for SPE column placement according to claim 1, characterized in that: The surface of the placement chamber (1) is provided with a plurality of evenly distributed placement holes (121). The inner wall of the placement hole (121) is provided with a plurality of sliding grooves (122) evenly distributed along the circumference of the placement hole (121). The sliding groove (122) is slidably connected to an abutment block (123). A spring (124) is provided between the abutment block (123) and the inner wall of the sliding groove (122).

3. The automatic sensing device for SPE column placement according to claim 2, characterized in that: The two ends of the spring (124) are fixedly connected to the inner wall of the groove (122) and the side wall of the abutment block (123), respectively.

4. The automatic sensing device for SPE column placement according to claim 3, characterized in that: The abutment block (123) has a chamfer (125) on one side edge.

5. The automatic sensing device for SPE column placement according to claim 4, characterized in that: The position and number of the sensing holes (111) and the placement holes (121) correspond to each other.

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