Sample moisture meter sample introduction device

Abstract

The utility model relates to a kind of sample moisture determinator sample introduction device, including determinator machine body, the determinator machine body side is provided with lifting sampling mechanism, determinator machine body other side is equipped with electrolytic cell bottle, the lifting sampling mechanism is connected with the gas pipe to electrolytic cell bottle, determinator machine body side is provided with heating tray located in the lifting sampling mechanism below, the heating tray above is equipped with carousel, the carousel is uniformly distributed with a plurality of positioning holes for placing sample bottle along the circumference direction on it. The utility model sample moisture determinator sample introduction device structure is novel, reasonable in design, convenient and practical, can heat several sample bottles simultaneously, and utilize carousel rotation switching to carry out moisture determination to sample in different sample bottles, high efficiency, significantly improve batch processing speed.

Description

Technical Field

[0001] This utility model relates to the field of moisture analyzers, and in particular to a sample injection device for a sample moisture analyzer. Background Technology

[0002] A Karl Fischer moisture analyzer is a method used to accurately determine the humidity or water content in a sample. Traditionally, when measuring the moisture in a solid sample, the moisture in the sample is slowly released at high temperature in a sealed container while dry gas is passed through the sealed container. The moisture content in the output gas is then measured to obtain the moisture content of the solid.

[0003] Currently, moisture analyzers are usually equipped with heating furnaces to heat samples, but they can only heat one sample at a time, which is slow and inefficient. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a sample moisture analyzer injection device with a novel structure, convenient and practical, high efficiency, and significantly improved batch processing speed.

[0005] This utility model is achieved by the following scheme: a sample moisture analyzer injection device, including an analyzer body, a lifting sampling mechanism is provided on one side of the analyzer body, an electrolytic cell is provided on the other side of the analyzer body, the lifting sampling mechanism is connected to an outlet pipe leading to the electrolytic cell, a heating plate is provided on one side of the analyzer body below the lifting sampling mechanism, a turntable is provided above the heating plate, and a plurality of positioning holes for placing sample bottles are evenly distributed along the circumference of the turntable.

[0006] Furthermore, the lifting sampling mechanism includes a lifting frame, a sampling head at the front end of the lifting frame, and a sampling needle tube. The sampling needle tube consists of an inner inlet needle tube and an outer outlet needle tube. The two ends of the inner inlet needle tube extend from the two ends of the outer outlet needle tube, respectively. An air inlet hole communicating with the upper end of the inner inlet needle tube is opened on the upper side of the sampling head, and an air outlet hole communicating with the upper end of the outer outlet needle tube is opened on the side of the sampling head.

[0007] Furthermore, the air outlet pipe is connected to the air outlet on the sampling head; the measuring instrument body is equipped with a drying bottle, the drying bottle is connected to an air supply pipe, and an air inlet pipe is connected between the drying bottle and the air inlet on the sampling head.

[0008] Furthermore, a bracket fixed to the measuring instrument body is provided behind the heating plate. The bracket has a vertically arranged lead screw and guide rod inside. The lifting frame is threadedly connected to the lead screw and slidably connected to the guide rod. A first motor is provided below the bracket and coaxially connected to the lower end of the lead screw.

[0009] Furthermore, a pressure plate is provided below the sampling head to press against the sample bottle. The pressure plate is connected to the lifting frame through a pair of guide shafts. The upper end of the guide shaft passes through the lifting frame and slides with the lifting frame. A retaining ring is provided at the upper end of the guide shaft to lock onto the upper side of the lifting frame. A spring is sleeved on the guide shaft. The two ends of the spring abut against the lifting frame and the pressure plate, respectively. A through hole is provided on the pressure plate for the sampling needle to pass through. A tapered guide groove is provided at the upper opening of the through hole.

[0010] Furthermore, a stabilizing plate is provided above the turntable, and the stabilizing plate is fixedly connected to the turntable. The stabilizing plate is provided with limiting holes that correspond one-to-one with the positioning holes on the turntable for the sample bottles to pass through.

[0011] Furthermore, the measuring instrument is equipped with a second motor located below the heating plate, and the main shaft of the second motor passes through the heating plate and is connected to the turntable.

[0012] Compared with the prior art, the present invention has the following advantages: The sample moisture analyzer of the present invention has a novel and reasonable design, is convenient and practical, can heat several sample bottles at the same time, and can use the turntable to switch between different sample bottles to measure the moisture content of the samples, which is highly efficient and significantly improves the batch processing speed.

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0014] Figure 1 This is a front view of an embodiment of the present utility model; Figure 2 This is a side sectional view of the lifting sampling mechanism according to an embodiment of this utility model; Figure 3 This is a cross-sectional view of the sampling head according to an embodiment of the present invention; Figure 4 This is a top view of the turntable in an embodiment of this utility model; Explanation of the numbers in the diagram: 100-Analyzer body, 110-Electrolytic cell bottle, 120-Heating plate, 130-Support, 131-Lead screw, 132-Guide rod, 140-First motor, 150-Second motor, 200-Lifting sampling mechanism, 210-Lifting frame, 220-Sampling head, 221-Air inlet, 222-Air outlet, 230-Sampling needle tube, 231-Inner air inlet needle tube, 232-Outer air outlet needle tube, 240-Pressure plate, 250-Guide shaft, 260-Spring, 300-Air outlet pipe, 400-Turntable, 410-Positioning hole, 420-Stabilizing plate, 500-Drying bottle, 510-Air supply pipe, 520-Air inlet pipe, 600-Sample bottle. Detailed Implementation

[0015] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] like Figures 1-4 As shown, a sample moisture analyzer injection device includes an instrument body 100. A lifting sampling mechanism 200 is provided on one side of the instrument body 100, and an electrolytic cell bottle 110 is provided on the other side. The lifting sampling mechanism is connected to an outlet pipe 300 leading to the electrolytic cell bottle 110. A heating plate 120 is provided on one side of the instrument body below the lifting sampling mechanism. The heating plate can be heated by heating wires, which are installed inside or at the bottom of the heating plate. A turntable 400 is provided above the heating plate, and a plurality of positioning holes 410 for placing sample bottles are evenly distributed along the circumference of the turntable 400. This utility model's sample moisture analyzer's injection device can simultaneously place several sample bottles containing samples on a turntable. The heating plate heats the sample to rapidly release moisture, which then enters the electrolytic cell via the air outlet to participate in the reaction and determine its content. Since the turntable can hold several sample bottles simultaneously, it can heat several sample bottles at the same time. The rotation of the turntable allows for switching between different sample bottles to determine the moisture content, making it convenient, practical, efficient, and significantly improving batch processing speed.

[0018] In this embodiment, the lifting sampling mechanism 200 includes a lifting frame 210, with a sampling head 220 at the front end of the lifting frame. The sampling head is equipped with a sampling needle tube 230, which consists of an inner inlet needle tube 231 and an outer outlet needle tube 232. The two ends of the inner inlet needle tube extend from the two ends of the outer outlet needle tube, respectively. An inlet hole 221 communicating with the upper end of the inner inlet needle tube is opened on the upper side of the sampling head, and an outlet hole 222 communicating with the upper end of the outer outlet needle tube is opened on the side of the sampling head. Dry air is injected into the sample bottle through the inner inlet needle tube 231. The dry air carries away the moisture in the sample bottle and is discharged through the outer outlet needle tube 232, and then enters the electrolytic cell bottle through the outlet tube.

[0019] In this embodiment, the vent pipe 300 is connected to the vent on the sampling head 220; the instrument body is equipped with a drying bottle 500, which is connected to a gas supply pipe 510. The gas supply pipe 510 is connected to an air pump, and air is injected by the air pump and dried in the drying bottle before entering the sample bottle, avoiding the introduction of moisture from the outside air that could affect the experimental results. The gas supply pipe extends to the bottom of the drying bottle. In specific implementations, the gas supplied through the gas supply pipe can also be nitrogen. An air inlet pipe 520 connects the drying bottle to the vent on the sampling head.

[0020] In this embodiment, a bracket 130 fixed to the body of the measuring instrument is provided behind the heating plate. The bracket is provided with a vertically arranged lead screw 131 and a guide rod 132. The two ends of the lead screw 131 are rotatably connected to the top and bottom of the bracket. The lifting frame is threadedly connected to the lead screw and slidably connected to the guide rod. A first motor 140 is provided below the bracket and coaxially connected to the lower end of the lead screw. The first motor 140 drives the lead screw to rotate, thereby driving the lifting frame to rise and fall.

[0021] In this embodiment, a pressure plate 240 is provided below the sampling head 220 to press against the sample bottle. The pressure plate is connected to the lifting frame via a pair of guide shafts 250. The upper end of the guide shaft passes through the lifting frame and slides with it. A retaining ring is provided at the upper end of the guide shaft to lock onto the upper side of the lifting frame. A spring 260 is sleeved on the guide shaft, with its two ends abutting against the lifting frame and the pressure plate, respectively. A through hole for the sampling needle to pass through is provided on the pressure plate, and a tapered guide groove is provided at the upper opening of the through hole. When the lifting frame descends, the pressure plate first presses down on the upper end of the sample bottle, and then the sampling needle is inserted; when the lifting frame descends, the sampling needle leaves the sample bottle first, and then the pressure plate is released, to prevent the sample bottle from being pulled up when the sampling needle is withdrawn, ensuring that the sample bottle remains stable when the sampling needle is inserted and withdrawn.

[0022] In this embodiment, in order to keep the sampling process stable, a stabilizing disk 420 is provided above the turntable. The stabilizing disk is fixedly connected to the turntable. The stabilizing disk is provided with limiting holes that correspond one-to-one with the positioning holes on the turntable for the sample bottle to pass through. The structure of the stabilizing disk is similar to that of the turntable.

[0023] In this embodiment, the measuring instrument body is provided with a second motor 150 located below the heating plate, and the main shaft of the second motor passes through the heating plate and is connected to the turntable.

[0024] The sample injection device of this utility model only improves the sample injection part of the moisture analyzer. As for the structure of the measuring part of the moisture analyzer (including the electrolytic cell bottle, detection electrode, electrolytic electrode, etc.), it adopts the existing technology and will not be described in detail here.

[0025] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0026] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0027] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0028] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A sample injection device for a sample moisture analyzer, characterized in that: The instrument includes a measuring instrument body, on one side of which is a lifting sampling mechanism and on the other side of which is an electrolytic cell bottle. The lifting sampling mechanism is connected to an outlet pipe leading to the electrolytic cell bottle. A heating plate is located below the lifting sampling mechanism on one side of the measuring instrument body. A turntable is located above the heating plate. Several positioning holes for placing sample bottles are evenly distributed along the circumference of the turntable.

2. The sample moisture analyzer injection device according to claim 1, characterized in that: The lifting sampling mechanism includes a lifting frame, a sampling head at the front end of the lifting frame, and a sampling needle tube. The sampling needle tube consists of an inner inlet needle tube and an outer outlet needle tube. The two ends of the inner inlet needle tube extend from the two ends of the outer outlet needle tube, respectively. An air inlet hole communicating with the upper end of the inner inlet needle tube is opened on the upper side of the sampling head, and an air outlet hole communicating with the upper end of the outer outlet needle tube is opened on the side of the sampling head.

3. The sample moisture analyzer injection device according to claim 2, characterized in that: The air outlet pipe is connected to the air outlet on the sampling head; the measuring instrument body is equipped with a drying bottle, the drying bottle is connected to an air supply pipe, and an air inlet pipe is connected between the drying bottle and the air inlet on the sampling head.

4. The sample moisture analyzer injection device according to claim 2, characterized in that: The heating plate is provided with a bracket fixed to the body of the measuring instrument. The bracket is provided with a vertically arranged lead screw and guide rod. The lifting frame is threadedly connected to the lead screw and slidably connected to the guide rod. A first motor is provided below the bracket and coaxially connected to the lower end of the lead screw.

5. The sample moisture analyzer injection device according to claim 2, characterized in that: Below the sampling head is a pressure plate for pressing against the sample vial. The pressure plate is connected to the lifting frame via a pair of guide shafts. The upper end of the guide shaft passes through the lifting frame and slides with it. The upper end of the guide shaft is provided with a retaining ring for locking onto the upper side of the lifting frame. A spring is sleeved on the guide shaft, with the two ends of the spring abutting against the lifting frame and the pressure plate, respectively. The pressure plate has a through hole for the sampling needle to pass through, and a tapered guide groove is provided at the upper opening of the through hole.

6. The sample moisture analyzer injection device according to claim 1, characterized in that: A stabilizing plate is provided above the turntable, and the stabilizing plate is fixedly connected to the turntable. The stabilizing plate is provided with limiting holes that correspond one-to-one with the positioning holes on the turntable for the sample bottle to pass through.

7. The sample moisture analyzer injection device according to claim 1, characterized in that: The measuring instrument is equipped with a second motor located below the heating plate. The main shaft of the second motor passes through the heating plate and is connected to the turntable.

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