A sample tray light shield

Abstract

This utility model discloses a sample tray light shield, belonging to the technical field of experimental equipment. The sample tray light shield includes a housing with a U-shaped cavity inside, into which a resistance wire is installed. A control module is installed on one side of the housing, and the control module is electrically connected to the resistance wire via a wire. An X-axis linear module is fixedly connected to the other side of the housing via a bracket. A Y-axis linear module is fixedly connected to a slide on the X-axis linear module. It can add heating elements to the resistance wire inside the housing and achieve temperature monitoring and adjustment through the control module and temperature sensor, reducing changes in the sample during the waiting period for sample introduction and further improving the reproducibility of the detection. Simultaneously, it adds a disassembly and assembly capping structure formed by a servo motor, lifting mechanism, and capping head, realizing automatic tightening and loosening of the sample cap, reducing detection steps, improving detection efficiency, and reducing experimental errors caused by the sample cap.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, and more specifically, to a sample tray light shield. Background Technology

[0002] Solid-phase microextraction pretreatment combined with gas chromatography separation technology can effectively achieve trace detection of volatile substances. The solid-phase microextraction autosampler adapted to the gas chromatograph can continuously inject up to 45 samples. However, because it does not have the ability to block light, and some volatile substances are easily photodegradable, the samples may be lost due to photodegradation during long-term continuous injection. Therefore, when continuously injecting samples, a light shield is usually used to block light.

[0003] Based on the above, the inventors discovered that traditional light shields typically lack temperature control during use, which can cause sample changes due to temperature variations while waiting for sample introduction, affecting the accuracy and reproducibility of the detection data. Furthermore, placing the sample inside a traditional light shield makes the removal and installation of the sample cover inconvenient, increasing the number of detection steps, reducing detection efficiency, and increasing experimental errors caused by the sample cover. Therefore, in view of these issues, the inventors researched and improved the existing structure to provide a sample tray light shield with greater practical value. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a sample tray light shield. It can add a resistance wire heating element inside the box and achieve temperature monitoring and adjustment through a control module and a temperature sensor, thereby reducing changes in the sample during the waiting period for sample injection and further improving the reproducibility of the detection. At the same time, it adds a disassembly and assembly cap structure formed by a servo motor, a lifting mechanism and a capping head, which realizes automatic tightening and loosening of the sample cap, reduces detection steps, improves detection efficiency and reduces experimental errors caused by the sample cap.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A sample tray light shield includes a housing with a U-shaped cavity inside, into which a resistance wire is installed. A control module is installed on one side of the housing, and the control module is electrically connected to the resistance wire via a wire. An X-axis linear module is fixedly connected to the other side of the housing via a bracket. A Y-axis linear module is fixedly connected to a slide on the X-axis linear module, and a mounting bracket is fixedly connected to a slide on the Y-axis linear module. A lifting mechanism is provided inside the mounting bracket, and a servo motor is vertically mounted on the lifting mechanism. The output shaft of the servo motor is driven to a connecting seat via a coupling, and a capping head is installed at the bottom of the connecting seat.

[0009] Furthermore, the top of the box body has several sample insertion holes, and the sample insertion holes are arranged in a matrix.

[0010] Furthermore, multiple temperature sensors are installed on the top of the box, and the temperature sensors are evenly distributed among several sample insertion holes.

[0011] Furthermore, the lifting mechanism includes a lifting cylinder vertically installed inside the mounting frame, the output end of the lifting cylinder is fixedly connected to a mounting plate, and the servo motor is vertically installed on the top of the mounting plate.

[0012] Furthermore, the bottom of the capping head is open, and the inner side wall is provided with anti-slip grooves.

[0013] Furthermore, a return spring is fixedly connected to the inner top wall of the capping head, and a push plate is fixedly connected to the bottom end of the return spring.

[0014] Furthermore, the Y-direction linear module is located above the X-direction linear module and is vertically distributed thereon.

[0015] Furthermore, the bottom surface of the box is provided with heat dissipation fins, and the extension direction of the heat dissipation fins is consistent with the guide rail direction of the X-axis linear module.

[0016] 3. Beneficial effects

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] (1) In this scheme, by opening a cavity in the box and adding a resistance wire in the cavity, the resistance wire can be heated under the control of the control module. At the same time, with the cooperation of the temperature sensor, the temperature can be monitored and adjusted, reducing the changes in the sample during the waiting period for sample injection and further improving the reproducibility of the detection.

[0019] (2) In this solution, by using the X-axis linear module and the Y-axis linear module together, the disassembly and assembly structure formed by the servo motor, the lifting mechanism and the capping head on the mounting frame can be moved to the top of the corresponding sample cap. The lifting mechanism drives the capping head to move down, so that the sample cap is inserted into the capping head. The servo motor drives the capping head to rotate, which can realize the automatic tightening or loosening of the sample cap, reduce the detection steps, improve the detection efficiency, and reduce the experimental error caused by the sample cap. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the present invention;

[0022] Figure 3 This is a cross-sectional view of the capping head of this utility model.

[0023] Figure 4 This is a schematic diagram of the resistance wire and control module structure of this utility model.

[0024] Explanation of the labels in the diagram:

[0025] 1. Box body;

[0026] 2. Resistance wire;

[0027] 3. Control module;

[0028] 4. X-axis linear module;

[0029] 5. Y-axis linear module;

[0030] 6. Mounting bracket;

[0031] 7. Lifting mechanism; 701. Lifting cylinder; 702. Mounting plate;

[0032] 8. Servo motor;

[0033] 9. Connecting base;

[0034] 10. Screw cap;

[0035] 11. Sample insertion hole;

[0036] 12. Temperature sensor;

[0037] 13. Return spring;

[0038] 14. Push plate. Detailed Implementation

[0039] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0040] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0041] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0042] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0043] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0044] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0045] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0046] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0047] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0048] Please see Figures 1-4 A sample tray light shield includes a box body 1. The box body 1 has a U-shaped cavity inside, and a resistance wire 2 is installed in the U-shaped cavity. A control module 3 is installed on one side of the box body 1. The control module 3 and the resistance wire 2 are electrically connected by a wire. An X-axis linear module 4 is fixedly connected to the other side of the box body 1 by a bracket. A Y-axis linear module 5 is fixedly connected to a slide on the X-axis linear module 4. A mounting bracket 6 is fixedly connected to a slide on the Y-axis linear module 5. A lifting mechanism 7 is provided inside the mounting bracket 6. A servo motor 8 is vertically installed on the lifting mechanism 7. The output shaft of the servo motor 8 is connected to a connecting seat 9 through a coupling. A capping head 10 is installed at the bottom of the connecting seat 9.

[0049] See Figure 1 The top of the box 1 has several sample insertion holes 11, and the sample insertion holes 11 are arranged in a matrix.

[0050] See Figure 1 Multiple temperature sensors 12 are installed on the top of the housing 1, and the temperature sensors 12 are evenly distributed among several sample jacks 11. During use, the temperature sensors 12 can be used to monitor and adjust the temperature, reduce changes in the sample during the waiting period for sample injection, and further improve the reproducibility of the detection.

[0051] See Figure 2 The lifting mechanism 7 includes a lifting cylinder 701 vertically installed inside the mounting frame 6. The output end of the lifting cylinder 701 is fixedly connected to the mounting plate 702, and the servo motor 8 is vertically installed on the top of the mounting plate 702.

[0052] See Figure 3 The bottom of the capping head 10 is open, and the inner side wall is provided with anti-slip grooves.

[0053] See Figure 3 A return spring 13 is fixedly connected to the inner top wall of the capping head 10, and a push plate 14 is fixedly connected to the bottom end of the return spring 13. In use, the sample cap can be pushed out of the capping head 10 by the return spring 13 in conjunction with the push plate 14.

[0054] See Figure 1 The Y-direction linear module 5 is located above the X-direction linear module 4 and is vertically distributed.

[0055] In some embodiments, the bottom surface of the housing is provided with heat dissipation fins, and the extending direction of the heat dissipation fins is consistent with the guide rail direction of the X-axis linear module.

[0056] In use: The container containing the sample is firmly inserted into the sample insertion hole 11 to secure it. A U-shaped cavity is opened inside the box body 1, and a resistance wire 2 is added inside the U-shaped cavity. Under the control of the control module 3, the resistance wire 2 can be heated. Simultaneously, with the cooperation of the temperature sensor 12, temperature monitoring and adjustment can be achieved, reducing changes in the sample during the waiting period for sample injection and further improving the reproducibility of the detection. At the same time, the cooperation of the X-axis linear module 4 and the Y-axis linear module 5 can move the disassembly and assembly cap structure formed by the servo motor 8, lifting mechanism 7, and capping head 10 on the mounting frame 6 to above the corresponding sample cap. The lifting cylinder 70... The servo motor 8 on the mounting plate 702 moves downward, and the capping head 10 moves downward accordingly, so that the sample cap is inserted into the capping head 10. The servo motor 8 starts. When the servo motor 8 drives the capping head 10 to rotate in the forward direction, the lifting cylinder 701 cooperates to move the whole structure downward, which can automatically tighten the sample cap. When the servo motor 8 drives the capping head 10 to rotate in the reverse direction, the sample cap can be automatically loosened. The lifting cylinder 701 cooperates to move the whole structure upward. After the sample cap is unscrewed, the return spring 13 in the compressed state cooperates with the push plate 14 to push the sample cap out of the capping head 10. The whole operation can reduce the detection steps, improve the detection efficiency, and reduce the experimental error caused by the sample cap.

[0057] 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 the 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 sample disc light shield comprising a box body (1), characterized in that: The box body (1) has a U-shaped cavity inside, and a resistance wire (2) is installed in the U-shaped cavity. A control module (3) is installed on one side of the box body (1). The control module (3) and the resistance wire (2) are electrically connected by a wire. An X-direction linear module (4) is fixedly connected to the other side of the box body (1) by a bracket. A Y-direction linear module (5) is fixedly connected to the slide on the X-direction linear module (4). A mounting bracket (6) is fixedly connected to the slide on the Y-direction linear module (5). A lifting mechanism (7) is provided inside the mounting bracket (6). A servo motor (8) is vertically installed on the lifting mechanism (7). The output shaft of the servo motor (8) is connected to a connecting seat (9) through a coupling. A capping head (10) is installed at the bottom of the connecting seat (9).

2. The sample disc light shield of claim 1, wherein: The top of the box (1) has several sample insertion holes (11), and the sample insertion holes (11) are arranged in a matrix.

3. The sample disc light shield of claim 1, wherein: Multiple temperature sensors (12) are installed on the top of the box (1), and the temperature sensors (12) are evenly distributed among several sample jacks (11).

4. The sample disc light shield of claim 1, wherein: The lifting mechanism (7) includes a lifting cylinder (701) vertically installed inside the mounting frame (6), the output end of the lifting cylinder (701) is fixedly connected to the mounting plate (702), and the servo motor (8) is vertically installed on the top of the mounting plate (702).

5. The sample disc light shield of claim 1, wherein: The bottom of the capping head (10) is open, and the inner side wall is provided with anti-slip grooves.

6. The sample disc light shield of claim 1, wherein: A return spring (13) is fixedly connected to the inner top wall of the capping head (10), and a push plate (14) is fixedly connected to the bottom end of the return spring (13).

7. The sample disc light shield of claim 1, wherein: The Y-direction linear module (5) is located above the X-direction linear module (4) and is vertically distributed.

8. The sample disc light shield of claim 1, wherein: The bottom surface of the box (1) is provided with heat dissipation fins, and the extension direction of the heat dissipation fins is consistent with the guide rail direction of the X-direction linear module (4).

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