Tray mechanism of sample injector and sample disc

Abstract

The tray mechanism comprises a tray body, the tray body is used for supporting the sample disc, a plurality of second detection pieces are arranged on the tray body, and the plurality of second detection pieces can respectively identify second identification pieces arranged on the sample disc and send signals to an external controller. Therefore, the sample disc is identified. The sample disc can be accommodated in the tray body. The device is reasonable in structure, high in automation degree and favorable for improving the detection safety.

Description

Technical Field

[0001] The utility model relates to the technical field of sample detection, in particular to a tray mechanism of a sample injector and a sample tray. Background Art

[0002] A sampler is a device or apparatus used to introduce samples into an analytical instrument. It is widely used in laboratories, particularly in chemical analysis, biomedical research, and environmental monitoring. A sample tray is a tray that holds sample vials to be analyzed. It is often used in conjunction with an automated sampling system for efficient and accurate sample processing.

[0003] Among them, due to the different specifications and sizes of sample bottles, different sample trays are often required to match different testing requirements. In testing practice, after replacing different sample trays, due to the different cavity parameters on the sample trays, the default parameter values ​​of the injection system must be manually switched, especially the default parameter values ​​of the injection needle. This can easily lead to detection failures due to human negligence, or even damage to the injection needle or sample bottle. Utility Model Content

[0004] The utility model discloses a tray mechanism and sample tray for a sampler, which solves the problems of detection failure and damage to the injection needle or sample bottle that are easy to occur when replacing sample trays of different specifications and sizes in the prior art. It has a reasonable structure, a high degree of automation, and is conducive to improving the technical effect of detection safety. The technical solution adopted is as follows:

[0005] A tray mechanism of an injector includes a tray body, which is used to support a sample tray. The tray body is provided with multiple second detection members, which can respectively identify second identification members provided on the sample tray and send signals to an external controller to identify the sample tray.

[0006] Based on the above technical solution, the second detection member includes a second optical coupler, and the second identification member includes a second baffle fixed at the lower part of the sample tray. When the second baffle extends into the second optical coupler, the second optical coupler sends a signal to the external controller.

[0007] On the basis of the above technical solution, the tray body is provided with a groove for accommodating and supporting the sample tray, and a plurality of the second detection members are provided on the groove wall of the groove.

[0008] Based on the above technical solution, the pallet body can slide axially along the pallet body under the action of the pallet drive. The pallet drive includes a pallet motor and a screw transmission unit. The pallet motor drives the pallet body to slide axially through the screw transmission unit.

[0009] On the basis of the above technical solution, it also includes a fixed supporting roller, the roller surface of the supporting roller abuts against the bottom surface of the pallet body upward and supports the pallet body upward.

[0010] On the basis of the above technical solution, the end surface where the bottom surface of the tray body contacts the roller surface of the support roller is an arc surface, and the arc surface is perpendicular to the axial direction of the support roller.

[0011] A sample tray is provided with a plurality of concave cavities for accommodating sample bottles. The sample tray can be accommodated in the tray body as described above. The sample tray includes avoidance grooves arranged in a one-to-one correspondence with second detection members, and a second identification member is provided in at least one of the avoidance grooves. When the second detection member extends into the avoidance groove and identifies the second identification member, the second detection member sends a signal to an external controller.

[0012] On the basis of the above technical solution, a through hole is provided on the bottom surface of the cavity for accommodating the sample bottle to avoid liquid accumulation.

[0013] Based on the above technical solution, the sample tray is provided with an identifier for identifying the position of the cavity.

[0014] Beneficial effects

[0015] The utility model has a reasonable structure and a high degree of automation. The tray body includes multiple second detection members, and second identification members are provided at corresponding positions on the sample tray. When the second detection member identifies the second identification member, it can send a signal to the controller, which can determine the specifications of the sample tray based on the signal, and the controller can control the switching of the default parameters of the injection system. There are multiple second detection members and second identification members, and the arrangement and combination of the identification signals can be used to define and identify sample trays of various specifications. It is convenient and flexible to use, and can greatly reduce production failures or losses caused by human negligence. The automatic switching of the default parameters of the injection system also helps to improve production efficiency.

[0016] In this utility model, multiple second detection elements are arranged on the groove wall, which not only improves flatness, but also facilitates inspection by staff and is easy to use. In addition, the design of the support rollers prevents the pallet body from forming a cantilever structure, which helps improve the stability of the pallet during movement. The support rollers contact the pallet body with their curved surfaces, reducing the contact area between the two. This not only helps reduce friction, but also reduces the difficulty of machining the contacting surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other implementation drawings can be derived from the provided drawings without inventive effort.

[0018] Figure 1 : Schematic diagram of the three-dimensional structure of the sample tray on the tray mechanism in the utility model Figure 1 ;

[0019] Figure 2 : Schematic diagram of the three-dimensional structure of the sample tray on the tray mechanism in the utility model Figure 1 ;

[0020] Figure 3 : Schematic diagram of the three-dimensional structure of the sample tray in the utility model Figure 1 ;

[0021] Figure 4 : Schematic diagram of the three-dimensional structure of the sample tray in the utility model Figure 2 ; DETAILED DESCRIPTION

[0022] The following description and accompanying drawings sufficiently illustrate the specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for portions and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims, including all available equivalents thereof. Herein, the terms "first," "second," and the like are used solely to distinguish one element from another and do not require or imply any actual relationship or order between these elements. In practice, the first element can also be referred to as the second element, and vice versa. Furthermore, the terms "comprise," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a structure, device, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such structure, device, or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of other identical elements in the structure, device, or apparatus comprising the element. The various embodiments herein are described in a progressive manner, with each embodiment focusing on its differences from the other embodiments. Similar or identical parts between the various embodiments can be referenced to each other.

[0023] The terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are intended only to facilitate the description of this document and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In the description herein, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, they can be mechanical or electrical connections, or they can be internal connections between two elements, they can be directly connected, or they can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0024] As used herein, unless otherwise specified, the term "plurality" means two or more.

[0025] In this document, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0026] In this article, the term "and / or" is used to describe the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0027] like Figures 1 and 2 The tray mechanism of the sample injector shown includes a tray body 41, which is used to support a sample tray 42. The tray body 41 is provided with a groove 411 for accommodating the sample tray 42, so as to facilitate guiding the sample tray 42 to be placed on the tray body 41. In addition, the setting of the groove 411 can also position the sample tray 42 when the tray body 41 is displaced.

[0028] Three second detection members 43 are arranged in parallel on the tray body 41. Figure 1 As shown, three second detection members 43 are provided on the groove wall on one side of the groove 411. In this embodiment, the second detection members 43 include second optical couplers, which can respectively identify the second identification members 44 provided on the sample tray 42 and send signals to the external controller to identify the sample tray 42.

[0029] Specifically, the second identification member 44 includes a second baffle fixed at the lower part of the sample tray 42. When the second baffle extends into the second optocoupler, the second optocoupler sends a signal to the external controller. The external controller determines the specifications of the sample tray 42 based on the received signal, and then controls the switching of the default parameters of the injection system.

[0030] like Figure 2As shown, it also includes a tray drive 45. The tray body 41 can slide axially along the tray body 41 under the action of the tray drive 45. The tray drive 45 includes a tray motor 451 and a screw transmission unit 452. The screw transmission unit 452 includes a screw and a screw nut cooperating with the screw. The tray motor 451 is fixedly arranged and can transmit rotational motion to the screw. The screw nut is sleeved outside the screw and fixedly connected to the tray body upward. In this way, the tray motor 451 drives the tray body 41 to slide along its axial direction through the screw transmission unit 452.

[0031] like Figure 2 As shown, it also includes a fixed support roller 46, the roller surface of the support roller 46 abuts against the bottom surface of the tray body 41 upward, and supports the tray body 41 upward; specifically, the end surface where the bottom surface of the tray body 41 abuts against the surface of the support roller 46 is an arc surface, and the arc surface is perpendicular to the axial direction of the support roller 46, so that the contact area between the two is small, which is not only beneficial to reduce friction, but also helps to reduce the difficulty of the processing technology of the conflicting surfaces.

[0032] like Figure 3 and 4 A sample tray 42 is shown, and the sample tray 42 is provided with a plurality of concave cavities 421 for accommodating sample bottles. The bottom surface of the concave cavities 421 is provided with through holes to prevent liquid accumulation. The sample tray 43 is provided with identifiers for identifying the positions of the concave cavities 421 to facilitate the positioning of any concave cavity 421. The sample tray 42 can be accommodated in the groove 411 of the tray body 41 as above, wherein the corresponding position of the sample tray 42 includes an avoidance groove 422 corresponding to the second detection member 43, and a second identification member 44 is provided in at least one avoidance groove 422. When the second detection member 43 extends into the avoidance groove 422 and identifies the second identification member 44, the second detection member 43 sends a signal to the external controller.

[0033] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments. Any changes or modifications based on the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A tray mechanism for a sample injector, characterized in that: The invention comprises a tray body (41), wherein the tray body (41) is used to support a sample tray (42), and a plurality of second detection members (43) are provided on the tray body (41). The plurality of second detection members (43) can respectively identify a second identification member (44) provided on the sample tray (42) and send a signal to an external controller to identify the sample tray (42).

2. The tray mechanism of the sample injector according to claim 1, characterized in that: The second detection member (43) includes a second optical coupler, and the second identification member (44) includes a second baffle fixed to the lower part of the sample tray (42). When the second baffle extends into the second optical coupler, the second optical coupler sends a signal to an external controller.

3. The tray mechanism of the sample injector according to claim 2, characterized in that: The tray body (41) is provided with a groove (411) for accommodating the supporting sample tray (42), and a plurality of the second detection members (43) are arranged on the groove wall of the groove (411).

4. The tray mechanism of the sample injector according to any one of claims 1 to 3, characterized in that: The tray body (41) can slide along the axial direction of the tray body (41) under the action of the tray drive (45), and the tray drive (45) includes a tray motor (451) and a screw transmission unit (452). The tray motor (451) drives the tray body (41) to slide along its axial direction through the screw transmission unit (452).

5. The tray mechanism of the sample injector according to claim 4, characterized in that: It also includes a fixed support roller (46), the roller surface of the support roller (46) abuts against the bottom surface of the tray body (41) upwards, and supports the tray body (41) upwards.

6. The tray mechanism of the sample injector according to claim 5, characterized in that: The end surface where the bottom surface of the tray body (41) contacts the roller surface of the support roller (46) is an arc surface, and the arc surface is perpendicular to the axial direction of the support roller (46).

7. A sample tray (42), the sample tray (42) being provided with a plurality of recessed cavities (421) for accommodating sample bottles, characterized in that: The sample tray (42) can be accommodated in the tray body (41) as described in any one of claims 1 to 3, 5, and 6. The sample tray (42) includes avoidance grooves (422) arranged in a one-to-one correspondence with the second detection members (43), and a second identification member (44) is provided in at least one of the avoidance grooves (422). When the second detection member (43) extends into the avoidance groove (422) and identifies the second identification member (44), the second detection member (43) sends a signal to an external controller.

8. The sample tray according to claim 7, wherein: The inner bottom surface of the cavity (421) for accommodating the sample bottle is provided with a through hole to prevent liquid accumulation.

9. The sample tray according to claim 8, characterized in that The sample tray (42) is provided with an identifier for identifying the position of the cavity (421).

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