Sample introduction device

Abstract

The utility model particularly relates to a sample introduction device which comprises a sample introduction chamber, the sample introduction chamber comprises a main body and a cover body, a sealing ring is arranged on the top surface of the main body, a containing cavity located on the inner side of the sealing ring is formed in the top surface of the main body, and a first connecting port and a second connecting port which are communicated with the containing cavity are formed in the main body. The first connector is used for being communicated with a sample injection pipe, and the second connector is used for being communicated with a combustion pipe. The cover body is at least arranged in a movable mode in the height direction of the main body, and the cover body is used for blocking the containing cavity. According to the sample introduction device, the accommodating cavity, the first connecting port and the second connecting port are formed in the main body, so that the porcelain boat can pass through the first connecting port, the accommodating cavity and the second connecting port in sequence to realize sample introduction of the porcelain boat, and the cover body capable of moving along the height direction is arranged, so that the sample introduction of the porcelain boat is realized. The sealing performance of the sample introduction chamber is improved, and the problem that an existing sample introduction chamber is not tight in sealing is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring the carbon dioxide content of solid samples, and particularly relates to a sampling device. Background Art

[0002] When analyzing solid samples with existing instruments, the carbon dioxide content is mainly detected based on a non-dispersive infrared detector. The specific operation is as follows: First, the weighed sample is placed in a ceramic boat and pushed into a heating chamber through the guidance of a sampling chamber for the determination of the total carbon content.

[0003] Currently, the sampling chamber includes a chamber and a sealing door, and the sealing door mostly closes the chamber in a flip-up manner. However, whether it is manually or automatically controlled, there will be a situation of poor sealing, resulting in gas leakage and affecting the detection results. Among them, the leakage in the manual mode is the most serious. Summary of the Utility Model

[0004] The purpose of the utility model is to at least solve the problem that the existing sampling chamber is prone to poor sealing. This purpose is achieved through the following technical solutions:

[0005] The utility model provides a sampling device, including a sampling chamber, and the sampling chamber includes:

[0006] A main body, on the top surface of which a sealing ring is provided, a receiving cavity located inside the sealing ring is opened on the top surface, and a first connection port and a second connection port communicating with the receiving cavity are opened on the main body. The first connection port is used to communicate with a sampling tube, and the second connection port is used to communicate with a combustion tube;

[0007] A cover body, which is arranged at least in a manner that can move along the height direction of the main body, and the cover body is used to block the receiving cavity.

[0008] The sampling device of the utility model includes a sampling chamber, which specifically includes a main body and a cover body. Among them, the main body is provided with a receiving cavity, and a first connection port and a second connection port communicating with the receiving cavity, so that the ceramic boat can pass through the first connection port, the receiving cavity and the second connection port in sequence to realize the sampling of the ceramic boat. At the same time, by setting a cover body that can move along the height direction to cooperate with the main body to block the receiving cavity, it helps to improve the sealing performance of the sampling chamber and solve the problem of poor sealing existing in the existing sampling chamber.

[0009] In addition, according to the sampling device of the utility model, it may also have the following additional technical features:

[0010] In some embodiments of the utility model, the first connection port and the second connection port are respectively arranged on two opposite side surfaces of the main body.

[0011] In some embodiments of the present utility model, a boat guide groove is provided at the bottom of the accommodation cavity, and the boat guide groove is communicatively arranged between the first connection port and the second connection port.

[0012] In some embodiments of the present utility model, a flame detection part is provided on the main body, and the flame detection part is used to detect the flame in the accommodation cavity.

[0013] In some embodiments of the present utility model, a refrigeration component is provided on the main body, the refrigeration component is arranged below the accommodation cavity, and the refrigeration component is used to cool the accommodation cavity.

[0014] In some embodiments of the present utility model, an observation window is provided on the cover body.

[0015] In some embodiments of the present utility model, it further includes:

[0016] A driving mechanism, the driving mechanism includes a mounting member moving along the height direction, and the cover body is fixedly connected to the mounting member.

[0017] In some embodiments of the present utility model, the driving mechanism further includes:

[0018] A fixing frame;

[0019] A first driving part, the first driving part is movably arranged on the fixing frame;

[0020] A first lead screw, the first lead screw is connected to the output end of the first driving part, the first lead screw is arranged along the height direction, and the mounting member is screwed on the first lead screw.

[0021] In some embodiments of the present utility model, the driving mechanism further includes:

[0022] A second driving part, the second driving part is arranged on the fixing frame;

[0023] A second lead screw, the second lead screw is connected to the output end of the first driving part;

[0024] A fixing seat, the fixing seat is screwed on the second lead screw, and the first driving part is arranged on the fixing seat.

[0025] In some embodiments of the present utility model, it further includes:

[0026] A clamping part, the clamping part is used to grab the boat and place the boat in the accommodation cavity;

[0027] A pushing part, the pushing part is detachably connected to the boat in the accommodation cavity, and the pushing part is used to drive the boat to move.

[0028] A control member, which is electrically connected to the clamping member, the pushing member, the first driving portion and the second driving portion. Description of the Drawings

[0029] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0030] Figure 1 is a schematic structural diagram of the sample introduction device shown in the embodiment of the present invention;

[0031] Figure 2 is a partial structural diagram of the sample introduction device shown in the embodiment of the present invention from a first perspective;

[0032] Figure 3 is a partial structural diagram of the sample introduction device shown in the embodiment of the present invention from a second perspective;

[0033] Figure 4 is a schematic structural diagram of the cover shown in the embodiment of the present invention.

[0034] The reference numerals in the drawings are as follows:

[0035] 10. Sample introduction chamber; 20. Driving mechanism;

[0036] 1. Main body; 11. First part; 111. Accommodating cavity; 112. First connection port; 113. Second connection port; 114. Boat guide groove; 12. Second part;

[0037] 2. Sealing ring;

[0038] 3. Cover; 31. Observation window;

[0039] 4. Flame detection part;

[0040] 5. Refrigeration component;

[0041] 6. Fixing bracket;

[0042] 71. First driving portion; 72. First lead screw; 73. Mounting member; 74. Connecting seat;

[0043] 81. Second driving portion; 82. Second lead screw; 83. Fixed seat;

[0044] 9. Sample boat. Detailed Description of the Embodiments

[0045] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0046] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an" and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing" and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is expressly stated. It should also be understood that additional or alternative steps may be used.

[0047] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms when used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0048] For ease of description, spatial relative relation terms may be used in the text to describe the relationship of one element or feature shown in the figure relative to another element or feature. These relative relation terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relation terms are intended to include different orientations of the device in use or operation other than the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" other elements or features will then be oriented as "above" or "over" other elements or features. Thus, the exemplary term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relation descriptors used in the text are accordingly interpreted.

[0049] As Figure 1 shown, an embodiment of the present utility model provides a sample introduction device, which is used to solve the problem of poor sealing of the existing sample introduction chamber 10.

[0050] In the overall design, the sample introduction device includes a sample introduction chamber 10, and the sample introduction chamber 10 includes a main body 1 and a cover 3. Among them, a sealing ring 2 is provided on the top surface of the main body 1, and a receiving cavity 111 located inside the sealing ring 2 is opened on the top surface. A first connection port 112 and a second connection port 113 communicating with the receiving cavity 111 are opened on the main body 1. The first connection port 112 is used to communicate with a sample introduction tube, and the second connection port 113 is used to communicate with a combustion tube. The cover 3 is arranged at least in a manner movable along the height direction of the main body 1, and the cover 3 is used to block the receiving cavity 111.

[0051] For the sample introduction device of the present utility model, by providing a receiving cavity 111 on the main body 1, and a first connection port 112 and a second connection port 113 communicating with the receiving cavity 111, the porcelain boat can sequentially pass through the first connection port 112, the receiving cavity 111 and the second connection port 113 to realize the sample introduction of the sample porcelain boat 9. At the same time, by providing a cover 3 that can move along the height direction to cooperate with the main body 1 to block the receiving cavity 111, it helps to improve the sealing performance of the sample introduction chamber 10.

[0052] Specifically, the sample injection device at least includes a sample injection chamber 10, a driving mechanism 20, a clamping member, a pushing member and a control member. Among them, the sample injection chamber 10 includes a main body 1 and a cover body 3. In this embodiment, the main body 1 includes a first part 11 and a second part 12. The first part 11 is arranged on the second part 12. The top surface of the first part 11 is provided with a sealing ring 2. At the same time, a accommodating cavity 111 located inside the sealing ring 2 is also provided on the top surface. The main body 1 is provided with a first connecting port 112 and a second connecting port 113 connected to the accommodating cavity 111. The first connecting port 112 is used to communicate with the sample injection tube, and the second connecting port 113 is used to communicate with the combustion tube. Such an arrangement enables the sample porcelain boat 9 to pass through the first connecting port 112, the accommodating cavity 111 and the second connecting port 113 in sequence, so that the sample in the sample porcelain boat 9 can be accurately placed in the combustion furnace, or taken out from the combustion furnace, so as to realize the combustion analysis of the sample in the combustion furnace. Preferably, the first connection port 112 and the second connection port 113 are respectively arranged on two opposite sides of the main body 1, so that the sample porcelain boat 9 can be transported along a straight line, thereby improving the transportation efficiency.

[0053] It should be noted that a cover 3 is movably provided on the top of the main body 1, and the cover 3 can be moved closer to or away from the first part 11 of the main body 1 under the action of the driving mechanism 20 described below, so as to cooperate with the main body 1 to block the accommodating cavity 111. At this time, the sealing ring 2 on the top surface of the first part 11 can ensure the sealing effect of the injection chamber 10 and effectively prevent gas leakage.

[0054] At this time, a porcelain boat guide groove 114 is provided at the bottom of the accommodating cavity 111, and the porcelain boat guide groove 114 is connected between the first connection port 112 and the second connection port 113. In this embodiment, the porcelain boat guide groove 114 is suitable for the shape setting of the sample porcelain boat 9, so as to prevent the sample boat from deviating and jamming during entering the high-temperature combustion furnace, thereby affecting the normal detection operation of the sample.

[0055] Combination Figures 1-3 As shown, the main body 1 is provided with a flame detection unit 4, which is used to detect the flame in the accommodating cavity 111. Specifically, the flame detection unit 4 is provided on the outer side of the first part 11. In this embodiment, the flame detection unit 4 is a flame sensor, and the detection unit of the flame sensor is provided in the accommodating cavity 111. When the sample in the sample porcelain boat 9 enters the combustion furnace, the flame sensor can detect the flame condition of the sample at any time, and if a flame occurs, the advancement is stopped immediately and the sample is returned.

[0056] It should be understood that a refrigeration component 5 is provided on the main body 1. The refrigeration component 5 is arranged below the accommodation cavity 111 and is used to cool the accommodation cavity 111. Since when the sample porcelain boat 9 after high-temperature combustion returns to the sample chamber, its temperature is still very high and it is easy to cause the temperature of the sample chamber to be high. At this time, since the accommodation cavity 111 is closed, it can heat the next sample, causing volatile components to volatilize in the sample chamber, affecting the test results and polluting the sample chamber and subsequent samples. By providing the refrigeration component 5 on the main body 1 to cool the accommodation cavity 111, it is possible to prevent samples that are volatile and have a low ignition point from burning or volatilizing before entering the combustion furnace, that is, it can prevent the sample chamber from being polluted and incomplete combustion, seriously affecting the accuracy of the test results. In this embodiment, the refrigeration component 5 is arranged on the second part 12.

[0057] At this time, an observation window 31 is provided on the cover body 3. In this embodiment, a transparent window is hollowed out at the middle position of the cover body 3 so as to be able to observe the state of the sample porcelain boat 9 and ensure the smooth conveyance of the sample.

[0058] Still Figure 1 As shown, the above-mentioned driving mechanism 20 can at least move the cover body 3 in the height direction. In this embodiment, the cover body 3 can not only move in the height direction but also move in the horizontal direction. Specifically, the driving mechanism 20 includes a fixing frame 6, a first driving part 71 and a first lead screw 72. Among them, the first driving part 71 is arranged on the fixing frame 6, the first lead screw 72 is connected to the output end of the first driving part 71, the first lead screw 72 is arranged in the height direction, a connecting seat 74 is screwed on the first lead screw 72, and a mounting member 73 is fixedly connected to the connecting seat 74, and the mounting member 73 is fixedly connected to the cover body 3. When the first driving part 71 works, the first lead screw 72 rotates, thereby driving the mounting member 73 to move in the height direction, and then realizing the movement of the cover body 3 in the height direction.

[0059] It should be further understood that the first driving part 71 is movably arranged on the fixing frame 6. Specifically, a second fixing part is arranged on the fixing frame 6, a second lead screw 82 is connected to the output end of the first driving part 71, and at the same time, a fixing seat 83 is screwed on the second lead screw 82, and the above-mentioned first driving part 71 is arranged on the fixing seat 83. In this embodiment, both the first driving part 71 and the second driving part 81 are arranged as driving motors.

[0060] Here, it should be noted that the fixing frame 6 can be connected to the second part 12 of the main body 1 or can be separately arranged from the main body 1, and there is no further limitation here. At the same time, the movement of the cover body 3 can also be realized by other methods in addition to the above structure, but the driving method of the lead screw as above is the most accurate and convenient.

[0061] In addition, the above control member is electrically connected to the clamping member, the pushing member, the first driving portion 71 and the second driving portion 81. Among them, the control member can control the clamping member to orientedly grasp the sample boat 9 of the sample to be measured and place the sample boat 9 in the accommodating cavity 111, so as to stably and reliably place the sample into the boat guide groove 114 of the sample introduction chamber 10. In this embodiment, the clamping member is a two-finger robotic arm, and the clamping member is adapted to the outer shape of the sample boat 9.

[0062] It should be understood that the above pushing member is detachably connected to the sample boat 9 in the accommodating cavity 111, and the pushing member is used to drive the sample boat 9 to move. Preferably, the pushing member is arranged as a quartz rod, and the quartz rod has a connecting hook for cooperating with the sample boat 9, so that it can be transported along the boat guide groove 114, and further the sample boat 9 can be transported into the combustion furnace, or the sample boat 9 after combustion can be pulled back.

[0063] The sample introduction device of this embodiment not only has a high degree of automation, greatly saves labor costs, but also improves the control accuracy, avoids the loss of samples during the sample introduction process, improves the combustion efficiency of the samples, and ensures the accuracy of the detection results.

[0064] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An injection device, characterized in that, Including a sample introduction chamber, the sample introduction chamber includes: A main body, on the top surface of the main body, a sealing ring is provided, an accommodation cavity located inside the sealing ring is opened on the top surface, a first connection port and a second connection port communicating with the accommodation cavity are opened on the main body, the first connection port is used to communicate with a sample introduction tube, and the second connection port is used to communicate with a combustion tube; A cover body, the cover body is arranged at least in a manner movable along the height direction of the main body, and the cover body is used to block the accommodation cavity.

2. The sample injection device according to claim 1, wherein The first connection port and the second connection port are respectively arranged on two opposite side surfaces of the main body.

3. The sample injection device according to claim 2, characterized in that, A porcelain boat guide groove is arranged at the bottom of the accommodation cavity, and the porcelain boat guide groove is communicatively arranged between the first connection port and the second connection port.

4. The sample introduction device according to claim 1, characterized in that A flame detection part is arranged on the main body, and the flame detection part is used to detect the flame in the accommodation cavity.

5. The sample introduction device according to claim 1, characterized in that, A refrigeration component is arranged on the main body, the refrigeration component is arranged below the accommodation cavity, and the refrigeration component is used to cool the accommodation cavity.

6. The sample introduction device according to claim 1, characterized in that, An observation window is arranged on the cover body.

7. The sample introduction device according to claim 1, characterized in that, It further includes: A driving mechanism, the driving mechanism includes a mounting member moving along the height direction, and the cover body is fixedly connected to the mounting member.

8. The sample injection device according to claim 7, characterized in that, The driving mechanism further includes: A fixing frame; A first driving part, the first driving part is movably arranged on the fixing frame; A first lead screw, the first lead screw is connected to the output end of the first driving part, the first lead screw is arranged along the height direction, and the mounting member is screwed on the first lead screw.

9. The sample introduction device according to claim 8, characterized in that, The driving mechanism further includes: A second driving part, the second driving part is arranged on the fixing frame; A second lead screw, the second lead screw is connected to the output end of the first driving part; A fixing seat, the fixing seat is screwed on the second lead screw, and the first driving part is arranged on the fixing seat.

10. The sample injection device according to claim 9, characterized in that, It further includes: A clamping member, the clamping member is used to grasp a porcelain boat and place the porcelain boat in the accommodation cavity; A pushing member, the pushing member is detachably connected to the porcelain boat in the accommodation cavity, and the pushing member is used to drive the porcelain boat to move; A control member, the control member is electrically connected to the clamping member, the pushing member, the first driving part and the second driving part.

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