Sample introduction device of nitrogen and oxygen element analyzer

Abstract

The utility model discloses a sampling device of a nitrogen and oxygen element analyzer, and relates to the technical field of nitrogen and oxygen element analyzers. The surface of the sample introduction base is provided with a groove, the rear side of the sample introduction base is provided with a pull rod drive, and a sample introduction structure is mounted in the groove; the sample introduction structure comprises a sample introduction block which is fixedly welded with the side wall of the groove and is provided with a sample introduction hole, and a push-pull block which is positioned at the side part of the sample introduction block and is used for sealing the sample introduction hole; the push-pull block is of an L-shaped structure, the sample injection block is located on an L-shaped groove of the push-pull block, and the sample injection hole is located over a graphite crucible in the high-temperature electrode. According to the utility model, the situation that a sample is stuck on the inner wall of the high-temperature electrode, so that the sample cannot fall into a crucible, the test cannot be normally carried out, and even abnormal shutdown is caused is avoided, and the high-temperature electrode is simple in structure, convenient and rapid to manufacture and use and strong in replaceability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to nitrogen oxygen element analysis appearance technical field, especially relates to a nitrogen oxygen element analysis appearance sampling device. BACKGROUND

[0002] The nitrogen oxygen element analysis appearance is a kind of instrument that can be heated combustion sample under inert atmosphere by pulse electrode furnace, and the content of oxygen and nitrogen in various steel, non-ferrous metal, rare earth and various new inorganic materials is measured by thermal release infrared detector IR and thermal conductivity detector TCD respectively.Nitrogen oxygen element analysis appearance includes pulse electrode furnace, detection system, gas path system, circuit system, sampling system and cooling system etc.;Its working principle is that sample is placed into pulse electrode furnace, and after high-power degassing, sample is melted at low power, oxygen and nitrogen are released, oxygen and carbon in graphite crucible react to generate carbon monoxide and carbon dioxide, and nitrogen escapes in the form of nitrogen gas.

[0003] Sample is placed into graphite crucible through the sampling position of nitrogen oxygen analysis appearance, and the existing sampling device is as shown in Figures 6-8 The recess on the surface of sampling base is provided with push block with slope, sample is located between slope and front wall of recess in initial state, the hole directly below is discharge hole, and the pull rod behind push block is pulled back, sample falls into graphite crucible in high-temperature electrode below along slope through discharge hole;For some columnar samples, length is longer, it slides down along slope and lies down in the process, and the sample after lying down is stuck on the wall of high-temperature electrode, so that sample cannot fall into crucible, test cannot be carried out normally, and even abnormal stop occurs, sample needs to be taken out to carry out test again.Therefore, in view of the above problems, the technical scheme is proposed based on the existing sampling device, which avoids sample lying down and can accurately fall into crucible. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of nitrogen oxygen element analysis appearance sampling device, the sampling block of this sampling device is fixedly arranged, push-pull block is push-pull arrangement, and sampling block surface is equipped with sampling hole, sample is located in sampling hole, and when push-pull block is pulled back, it will keep free fall motion, and will not produce lateral swing, so as to avoid being stuck on the inner wall of high-temperature electrode, so that sample cannot fall into crucible, test cannot be carried out normally, and even abnormal stop occurs;The technical scheme is simple in structure, improved based on original sampling structure, and is convenient and fast in manufacture and use, and has strong replaceability;Summarized above, the problems in background art are solved.

[0005] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0006] The utility model discloses a nitrogen oxygen element analysis appearance sampling device, including the sampling base that has the recess on the surface and has the pull rod drive on the back side, install sampling structure in the recess,

[0007] The sampling structure includes a sampling block with a sampling hole fixedly welded with the recess sidewall and a push-pull block for sealing the sampling hole on the side of the sampling block.

[0008] The push-pull block is an L-shaped structure, the sampling block is located on the L-shaped groove of the push-pull block, and the bottom surface of the sampling block is attached to the bearing surface of the push-pull block. The sampling hole is located directly above the graphite crucible in the high-temperature electrode.

[0009] Further, the pull rod drive is a pneumatic cylinder, an oil cylinder or an electric cylinder.

[0010] Further, the pull rod drive pulls the push-pull block to the side to completely expose the sampling hole, and pushes it forward to completely shield the sampling hole.

[0011] Further, the side of the push-pull block is provided with a T-shaped groove matched with the connecting head, and the connecting head is a T-shaped connecting head connected with the end of the top rod of the pull rod drive.

[0012] The utility model discloses relative to prior art includes the following beneficial effects:

[0013] (1) avoid being stuck in the inner wall of high-temperature electrode: the sampling block of the sampling device is fixedly arranged, the push-pull block is pushably arranged, the surface of the sampling block is provided with a sampling hole, and the sample is located in the sampling hole. When the push-pull block is pulled back, it will keep free-fall motion and will not produce horizontal swing, thereby avoiding being stuck in the inner wall of the high-temperature electrode, so that the sample cannot fall into the crucible, resulting in that the test cannot be normally carried out, and even the abnormal stoppage situation may occur.

[0014] (2) the technical scheme is simple in structure, improved on the basis of the original sampling structure, convenient and fast to manufacture and use, and strong in replaceability.

[0015] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating labor.

[0017] Figure 1The utility model relates to a nitrogen oxygen element analyzer sampling device structure schematic diagram of installing on the sampling base,

[0018] Figure 2 The utility model relates to a nitrogen oxygen element analyzer sampling device and high temperature electrode's position relation diagram,

[0019] Figure 3 The utility model relates to a nitrogen oxygen element analyzer sampling device structure schematic diagram,

[0020] Figure 4 For Figure 3 Structure top view,

[0021] Figure 5 For Figure 3 Structure exploded view,

[0022] Figure 6 It is the structure schematic diagram of installing the nitrogen oxygen element analyzer sampling device of prior art in the background art on the sampling base,

[0023] Figure 7 It is the position relation diagram of nitrogen oxygen element analyzer sampling device and high temperature electrode of prior art in the background art,

[0024] Figure 8 It is the structure relation diagram of nitrogen oxygen element analyzer sampling device and high temperature electrode port of prior art in the background art,

[0025] Figure 9 It is the position mark diagram of nitrogen oxygen element analyzer sampling device in nitrogen oxygen element analyzer,

[0026] In the drawings, the component list represented by each sign is as follows:

[0027] 1-sampling base, 11-groove, 12-pull rod drive, 13-high temperature electrode, 14-graphite crucible, 2-sampling block, 21-sampling hole, 3-pull block, 31-bearing surface, 32-T-shaped groove, 4-pull block, 41-discharging hole, 42-side stop, 43-inclined plane. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0029] In the description of the utility model, it is understood that the terms "surface", "rear side", "inner", "side wall", "side", "bottom", "directly above" and the like indicate the orientation or positional relationship, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] As shown in Figure 9 It is the position map of the nitrogen and oxygen element analyzer sample introduction device on the nitrogen and oxygen element analyzer, specifically at the A position, that is, above the high-temperature electrode, which is the standard position of the nitrogen and oxygen element analyzer, and the position of the nitrogen and oxygen element analyzer sample introduction device of the present technical solution is the same as that of the existing nitrogen and oxygen element analyzer sample introduction device.

[0031] As shown in Figures 6-8 It is the structure and position schematic diagram of the existing nitrogen and oxygen element analyzer sample introduction device; as shown in Figure 8 The existing nitrogen and oxygen element analyzer sample introduction device includes a push block 4 with a slope 43 installed in the groove 11 on the surface of the sample introduction base 1, and side stops 42 are arranged on both sides of the slope 43, and in the starting state of the existing nitrogen and oxygen element analyzer sample introduction device, the sample B is located between the slope 43 and the front wall of the groove 11, and the lower hole 41 is located directly below the slope 43, and in the process of pulling the pull rod behind the push block 4 backward, the sample B falls along the slope 43 through the lower hole 41 and falls into the graphite crucible 14 in the high-temperature electrode 13 below; for some columnar samples, the length is relatively long, and due to the falling process, one end may fall down first, the other end may fall down later, or the whole falls down horizontally, so the sample B will slide down along the slope and lie down in the process of sliding, and the graphite crucible 14 and the high-temperature electrode 13 are arranged with a spacing, and the sample B after lying down will be clamped on the inner wall of the high-temperature electrode 13, so that the sample B cannot fall into the crucible 14, resulting in that the test cannot be carried out normally, and even abnormal stop, and the sample B needs to be taken out before the test can be carried out again; based on the above problems, the present technical solution is proposed, which can avoid the sample lying down and can accurately fall into the crucible.

[0032] Please refer to Figures 1-5 The utility model discloses a nitrogen and oxygen element analyzer sample introduction device, which comprises a sample introduction base 1 provided with a groove 11 on the surface and a pull rod drive 12 on the rear side, and a sample introduction structure is installed in the groove 11.

[0033] The sample introduction structure comprises a sample introduction block 2 provided with a sample introduction hole 21 and fixedly welded with the side wall of the groove 11, and a push-pull block 3 arranged on the side of the sample introduction block 2 and sealing the sample introduction hole 21.

[0034] The push-pull block 3 is L-shaped structure, the sample feeding block 2 is located on the L-shaped groove of the push-pull block 3, and the bottom surface of the sample feeding block 2 is attached to the bearing surface 31 of the push-pull block 3; the side of the push-pull block 3 is connected with the top rod end of the pull rod drive 12 through a connecting head, and the sample feeding hole 21 is located directly above the graphite crucible 14 in the high-temperature electrode 13.

[0035] The pull rod drive 12 pulls the pull rod to move the push-pull block 3 backward, so that the sample B carried in the sample feeding hole 21 falls vertically into the graphite crucible 14 directly below the sample feeding hole 21, and the graphite crucible 14 is located in the high-temperature electrode 13.

[0036] The pull rod drive 12 is a pneumatic cylinder, an oil cylinder or an electric cylinder, which can realize the forward pushing and backward pulling of the push-pull block 3, so as to realize the falling action of the sample B in the sample feeding hole 21; the pull rod drive 12 pulls the push-pull block 3 to the side to make the sample feeding hole 21 completely exposed, and pushes it forward to make the sample feeding hole 21 completely shielded.

[0037] The side of the push-pull block 3 is provided with a T-shaped groove 32 matched with the connecting head, and the connecting head is a T-shaped connecting head connected with the top rod end of the pull rod drive 12.

[0038] In the technical solution, the sample feeding block 2 is fixedly arranged, the push-pull block 3 is arranged to be pushed and pulled, the sample feeding block 2 is provided with the sample feeding hole 21, and the sample B is located in the sample feeding hole 21; when the push-pull block 3 is pulled backward, the sample B keeps free-fall motion and does not produce horizontal swing, so that the sample B is prevented from being stuck on the inner wall of the high-temperature electrode 13, the sample B cannot fall into the crucible 14, the test cannot be normally performed, and even the abnormal stop occurs; the technical solution has simple structure, is improved on the basis of the original sample feeding structure, and is convenient and fast to manufacture and use, and has strong replaceability.

[0039] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific embodiments. Apparently, according to the content of the specification, many modifications and changes can be made. The embodiments are selected and specifically described in the specification, in order to better explain the principle and practical application of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A nitrogen oxygen elemental analyzer sample inlet device, comprising a sample inlet base (1) with a groove (11) on the surface and a pull rod drive (12) on the back side, and a sample inlet structure is installed in the groove (11), characterized in that: the sample inlet structure comprises a sample inlet block (2) with a sample inlet hole (21) welded and fixed with the side wall of the groove (11), and a push-pull block (3) located on the side of the sample inlet block (2) to seal the sample inlet hole (21); the push-pull block (3) is an L-shaped structure, the sample inlet block (2) is located on the L-shaped groove of the push-pull block (3), and the bottom surface of the sample inlet block (2) is attached to the bearing surface (31) of the push-pull block (3); the side of the push-pull block (3) is connected to the end of the top rod of the pull rod drive (12) through a connecting head, and the sample inlet hole (21) is located directly above the graphite crucible (14) in the high-temperature electrode (13). The pull rod drive (12) is a pneumatic cylinder, an oil cylinder or an electric cylinder. After the pull rod drive (12) pulls the push-pull block (3) to the side, the sample inlet hole (21) is completely exposed, and after it is pushed forward, the sample inlet hole (21) is completely shielded.

2. A sampling device for a nitrogen-oxygen elemental analyzer according to claim 1, wherein The side of the push-pull block (3) is provided with a T-shaped groove (32) matched with the connecting head, and the connecting head is a T-shaped connecting head connected to the end of the top rod of the pull rod drive (12).

3. A sampling device for a nitrogen-oxygen elemental analyzer according to claim 1, wherein ​ 4. A sampling device for a nitrogen-oxygen elemental analyzer according to claim 1, wherein ​

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