A sampling needle structure of an automatic sampler

Abstract

The utility model belongs to the field of detection sampling technology, and specifically relates to a sampling needle structure of an automatic sampler. The device includes: a housing, a slider slidably arranged in the housing, a sensor arranged above the slider, and a sampling needle connected to the slider, wherein the sensor is signal-connected to the slider. The standard sample bottles currently circulating on the market have different bottom heights due to the manufacturing process. The loss caused by the different bottom heights can be avoided by the patented structure. The sensor is used to determine whether the sampling needle can enter the bottle and whether sampling can be performed, thereby avoiding losses caused by incorrect parameter settings or operating errors.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection sampling, and in particular relates to a sampling needle structure of an automatic sampler. Background Art

[0002] Since the automatic sampler is a human-computer interactive operation and can be adapted to a variety of sample bottles of different specifications, errors may occur during manual operation.

[0003] Disadvantages of the prior art: 1. The needle insertion distance is completely set manually, and once the setting is wrong, it will cause losses.

[0004] 2. The sealing status between the needle and the needle seat is completely set according to the initial program. If it is worn out after long-term use, it will not be able to seal.

[0005] 3. Unable to determine whether there is a sample bottle at the set point. Utility Model Content

[0006] The purpose of the utility model is to provide a sampling needle structure for an automatic sampler to solve the above technical problems. In order to solve the above technical problems, the utility model provides a sampling needle structure for an automatic sampler, comprising a housing, a slider slidably arranged in the housing, a sensor arranged above the slider, and a sampling needle connected to the slider, wherein the sensor is connected to the slider signal.

[0007] Furthermore, the sensor is also connected to a conversion piece, and the conversion piece includes a fixed end and a connecting end connected to the fixed end, wherein the fixed end is fixedly connected to the sensor.

[0008] Furthermore, a groove is provided on the sliding block, a spring is sleeved on the connecting end, and the other end of the spring extends into the groove and abuts against the bottom of the groove.

[0009] Furthermore, a slide groove is provided on the side wall of the shell, and a guide block is fixedly connected to the sliding block, wherein the guide block is slidably arranged in the slide groove, and the length direction of the slide groove is parallel to the sliding direction of the guide block.

[0010] Furthermore, a mounting groove is provided on one side of the slider, and the mounting groove is suitable for placing the sampling needle, and a channel is provided in the slider, wherein the sampling needle passes through the channel and extends to the outside of the shell.

[0011] Furthermore, a connector is also provided in the installation groove, one end of the connector is connected to the sampling needle, and the other end is suitable for being connected to the sampling tube.

[0012] Furthermore, a through hole is provided at one end of the housing close to the sensor to facilitate the wiring of the sensor to be led out.

[0013] Furthermore, a plurality of positioning holes are provided above the shell to facilitate transmission connection between the shell and the driving mechanism.

[0014] The beneficial effect of the utility model is that the height of the bottom of the standard sample bottles currently circulating on the market is not consistent due to the manufacturing process. The loss caused by the different heights of the bottom of the bottle can be avoided by the patented structure. The sensor is used to determine whether the sampling needle can enter the bottle and whether sampling can be performed, thereby avoiding the loss caused by incorrect parameter settings or operating errors.

[0015] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is the first schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is the second schematic diagram of the overall structure of the utility model;

[0020] Figure 3 It is a cross-sectional view of the internal structure of the utility model.

[0021] In the figure:

[0022] Shell, 110, slider, 111, groove, 112, guide block, 120, sensor, 130, sampling needle, 140, adapter, 141, fixed end, 142, connecting end, 143, spring, 150, slide groove, 160, mounting groove, 161, connector, 170, through hole, 180, positioning hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1, as Figure 1 As shown, the sampling needle structure of the automatic sampler of this embodiment includes a housing 100, a slider 110 slidably disposed in the housing 100, a sensor 120 disposed above the slider 110, and a sampling needle 130 connected to the slider 110, wherein the sensor 120 is signal-connected to the slider 110. The sampling needle 130 can be inserted into a sample bottle for sampling, and the specific steps are as follows:

[0025] 1. During the sampling process, the sampling needle 130 is aimed at the sample bottle, and the value of the sensor 120 is set to A. After finding the sampling point, the sampling needle 130 moves downward. If the value of the sensor 120 increases instantaneously and then immediately decreases to around A, it means that the sampling needle 130 has pierced through the rubber pad of the sample bottle and entered the sample bottle, and sampling can begin.

[0026] 2. During the sampling process, the sampling needle 130 is aimed at the sample bottle, and the value of the sensor 120 is set to A. After finding the sampling point, the sampling needle 130 moves downward. If the value of the sensor 120 increases instantaneously, then immediately decreases to around A, and then increases significantly, it means that the needle tip touches the bottom of the sample bottle, then an alarm will be triggered and the parameters will be reset.

[0027] 3. During the sampling process, the sampling needle 130 is aimed at the sample bottle, and the value of the sensor 120 is set to A. After finding the sampling point, the sampling needle 130 moves downward. If the value of the sensor 120 continues to increase, it means that the sampling needle 130 has pierced a hard object, an alarm starts, and the parameters are reset.

[0028] 4. During the sampling process, the sampling needle 130 is aimed at the sample bottle, and the value of the sensor 120 is set to A. After finding the sampling point, the sampling needle 130 moves downward. If the value of the sensor 120 remains unchanged at A, it means that the sampling needle 130 has not pierced the rubber pad of the sample bottle. The sample bottle may not be placed here, or the sample bottle may be in an open state and there is no sample bottle rubber pad.

[0029] In order to enable the sensor 120 to sense the force of the sampling needle 130, the sensor 120 is also connected to an adapter 140, and the adapter 140 includes a fixed end 141 and a connecting end 142 connected to the fixed end 141, wherein the fixed end 141 is fixedly connected to the sensor 120. The slider 110 is provided with a groove 111, and the connecting end 142 is sleeved with a spring 143, and the other end of the spring 143 extends into the groove 111 and abuts against the bottom of the groove 111. The adapter 140 ensures that the force of the slider 110 is transmitted to the sensor 120, that is, since the sampling needle 130 is installed on the slider 110, the force of the sampling needle 130 is transmitted to the sensor 120. The spring 143 ensures that when the sampling needle 130 is inserted into the sample bottle, the instantaneous force is prevented from being too large to damage the components.

[0030] A slide groove 150 is provided on the side wall of the housing 100, and a guide block 112 is fixedly connected to the slider 110. The guide block 112 is slidably disposed in the slide groove 150, and the length direction of the slide groove 150 is parallel to the sliding direction of the guide block 112. The guide block 112 slides in the slide groove 150, and the slide groove 150 cooperates with the spring 143 to limit the sliding stroke of the guide block 112, that is, to limit the sliding stroke of the slider 110 when the housing 100 does not move, so as to prevent excessive instantaneous force from damaging components.

[0031] A mounting groove 160 is provided on one side of the slider 110, and the mounting groove 160 is suitable for placing the sampling needle 130. A channel is provided in the slider 110, wherein the sampling needle 130 passes through the channel and extends to the outside of the housing 100. The sampling needle 130 passes through the housing 100 and reaches the bottom of the housing 100. Since a plurality of positioning holes 180 are provided on the upper part of the housing 100, so as to facilitate the transmission connection between the housing 100 and the driving mechanism, the positioning holes 180 are suitable for fixed connection with the connecting piece at the end of the driving mechanism, and the driving mechanism drives the housing 100 to move up and down, and the housing 100 drives the sampling needle 130 to move up and down.

[0032] In order to take out the liquid in the sample bottle, a connector 161 is further provided in the mounting groove 160, one end of the connector 161 is connected to the sampling needle 130, and the other end is suitable for conducting with the sampling tube. The sampling tube is aligned with the connector 161, and the liquid in the sample bottle is taken out by suction.

[0033] The sensor 120 is disposed on the housing 100 to facilitate wiring of the sensor 120 . A through hole 170 is also provided at one end of the housing 100 close to the sensor 120 to facilitate wiring of the sensor 120 .

[0034] All devices (parts without specific structure) selected in this application are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or conventional experimental methods. In addition, the software programs involved in this application are all prior art, and this application does not involve any improvement to the software programs.

[0035] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0038] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0039] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0040] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A sampling needle structure for an automatic sampler, characterized in that: include: A housing, a slider slidably disposed in the housing, a sensor disposed above the slider, and a sampling needle connected to the slider, wherein: The sensor is signal-connected to the slider.

2. The automatic sampler sampling needle structure according to claim 1, characterized in that: The sensor is also connected to a transfer piece, and the transfer piece includes a fixed end and a connecting end connected to the fixed end, wherein: The fixed end is fixedly connected to the sensor.

3. The automatic sampler sampling needle structure according to claim 2, characterized in that: The sliding block is provided with a groove, the connecting end is sleeved with a spring, and the other end of the spring extends into the groove and abuts against the bottom of the groove.

4. The automatic sampler sampling needle structure according to claim 1, characterized in that: A sliding groove is provided on the side wall of the housing, and a guide block is fixedly connected to the sliding block, wherein: The guide block is slidably disposed in the slide groove, and the length direction of the slide groove is parallel to the sliding direction of the guide block.

5. The automatic sampler sampling needle structure according to claim 1, characterized in that: A mounting groove is provided on one side of the slider, and the mounting groove is suitable for placing the sampling needle, and a channel is provided in the slider, wherein: The sampling needle passes through the channel and extends to the outside of the shell.

6. The automatic sampler sampling needle structure according to claim 5, characterized in that: A connector is also provided in the installation groove, one end of the connector is connected to the sampling needle, and the other end is suitable for being connected to the sampling tube.

7. The automatic sampler sampling needle structure according to claim 1, characterized in that: A through hole is also provided at one end of the housing close to the sensor to facilitate the wiring of the sensor.

8. The automatic sampler sampling needle structure according to claim 1, characterized in that: A plurality of positioning holes are provided above the shell to facilitate transmission connection between the shell and the driving mechanism.

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