Graphite gas guide cylinder with easy-to-butt-joint structure

Abstract

The utility model relates to the field of machinery, in particular to a butt joint technology of a graphite gas guide cylinder. The graphite gas guide cylinder with the structure easy to butt joint comprises a graphite gas guide cylinder, a butt joint structure connected with another graphite gas guide cylinder is arranged at one end of the graphite gas guide cylinder, and the end with the butt joint structure is called as a butt joint end; the butt joint structure comprises a flange arranged at the butt joint end and a graphite flange plate arranged behind the flange, and the graphite flange plate is rotatably arranged on the graphite gas guide cylinder in a sleeving manner; the outer diameter of the flange is larger than the inner diameter of the graphite flange, so that the graphite flange is prevented from falling off from the butting end; the flange end face, facing the turned-over edge, of the graphite flange plate is provided with a groove matched with the turned-over edge to be embedded. The depth of the groove is 0.5-1mm smaller than the thickness of the flanging; and 4-6 bolt through holes are uniformly distributed on the graphite flange plate. During butt joint, the flange plates are rotated, bolt holes in the flange plates on the two sides are easy to align, and the problem that graphite gas cylinders are easy to butt joint is solved.

Description

Technical Field

[0001] This utility model relates to the field of machinery, specifically to a docking technology for a graphite air guide tube. Background Technology

[0002] A graphite boat is a container made of high-purity graphite, possessing high-temperature resistance and chemical stability. The main purpose of high-purity graphite boats is to contain and carry substances in high-temperature environments, particularly in high-temperature reactions, metal smelting, semiconductor manufacturing, and chemical experiments. Its high purity and high-temperature resistance make it an important tool in these applications.

[0003] During the use of graphite boats, it is often necessary to isolate them from oxygen in the air. Even if the graphite boat is in a vacuum environment, oxygen will be released from the material when the workpiece is processed at high temperature. Materials such as monocrystalline silicon and polycrystalline silicon contain oxygen, so protective gases such as argon are also needed to isolate oxygen.

[0004] Graphite boats are generally located in high-temperature environments, and it is difficult to use metal components for the pipelines that transport protective gases. Therefore, the entire gas transport path is often made of graphite.

[0005] Graphite is a high-temperature resistant and rigid material, but it has poor plasticity. When connecting graphite air guides, if there is a significant deviation in the connection angle, the bolts on one side may be too loose while the bolts on the other side are too tight. Overly tight fasteners are prone to breakage. Therefore, the adjustable range of the connection angle of graphite air guides is very small, and the requirements for the connection angle are very strict, resulting in low connection efficiency. Therefore, designing an easy-to-connect structure is of great significance for the connection of graphite air guides. Utility Model Content

[0006] The purpose of this invention is to provide a graphite air guide with an easy-to-connect structure to solve at least one of the above-mentioned technical problems.

[0007] The technical problem solved by this utility model can be achieved by the following technical solution:

[0008] A graphite air guide tube with an easy docking structure includes a graphite air guide tube, one end of which is provided with a docking structure for connecting another graphite air guide tube. The end with the docking structure is called the docking end.

[0009] The docking structure includes a flange at the docking end and a graphite flange behind the flange, the graphite flange being rotatably fitted onto the graphite air guide tube.

[0010] The outer diameter of the flange is larger than the inner diameter of the graphite flange, preventing the graphite flange from falling off the mating end;

[0011] The graphite flange has a groove on the flange end face facing the flange to fit the flange.

[0012] The depth of the groove is 0.5 to 1 mm less than the thickness of the flange;

[0013] The graphite flange has 4 to 6 bolt holes evenly distributed on it.

[0014] In the above design, a flange is provided at the mating end of the graphite air guide tube. The purpose of the flange is to prevent the graphite air guide tube from detaching from the graphite flange. The graphite flange is fitted onto the graphite air guide tube and can rotate on it. When mating the graphite air guide tubes, the flanges on both sides can easily align with the bolt holes by rotation, without the need for precise adjustment of the alignment angle of the graphite air guide tube, thus making mating easier and more convenient. Its advantages are that it saves labor and time, reduces the time spent adjusting the mating angle, and improves the efficiency of mating.

[0015] Furthermore, the locking components of the graphite flange are graphite bolts and graphite nuts;

[0016] When the graphite bolt and graphite nut are tightened, a threaded hole is vertically provided at the threaded connection of the graphite bolt and graphite nut;

[0017] Half of the screw hole is located on the outside of the external thread of the graphite bolt;

[0018] The other half of the screw hole is located inside the internal thread of the graphite nut;

[0019] A graphite screw is screwed into the screw hole to lock the graphite bolt and graphite nut in place.

[0020] In the above design, the locking components of the graphite flange are graphite bolts and graphite nuts, which have the advantage of high temperature resistance.

[0021] In the above design, a vertical screw hole is provided at the threaded connection of the graphite bolt and graphite nut in the tightened state. A graphite screw is screwed into the screw hole, and the graphite screw locks the graphite bolt and graphite nut. Its beneficial effect is to prevent the graphite bolt and graphite nut from loosening.

[0022] In the above design, the graphite screw is screwed into the screw hole and a recess is left. The recess is filled with high-temperature resistant adhesive. The beneficial effect is that filling the recess with high-temperature resistant adhesive prevents the graphite screw from coming loose from the screw hole, which would cause the graphite bolt and graphite nut to fail to hold.

[0023] Furthermore, the graphite air guide, graphite flange, graphite bolt, graphite nut, and graphite screw are all made of graphite material with the same coefficient of expansion.

[0024] In the above design, the graphite air guide, graphite flange, graphite bolt, graphite nut, and graphite screw are all made of graphite material with the same coefficient of expansion to avoid the risk of the locking parts breaking due to different expansion systems during high-temperature use. The risks include the following: the graphite air guide cracking the graphite flange, the graphite bolt cracking the graphite nut, and the graphite screw cracking the graphite nut.

[0025] Furthermore, after the graphite screw is screwed into the screw hole, a recess is left above the screw hole, and the recess is filled with high-temperature resistant adhesive.

[0026] In the above design, the graphite screw is screwed into the screw hole and a recess is left. The recess is filled with high-temperature resistant adhesive. The beneficial effect is that filling the recess with high-temperature resistant adhesive prevents the graphite screw from coming out of the screw hole, thus preventing the graphite bolt and graphite nut from being locked in place.

[0027] Furthermore, it also includes a soft graphite ring for sealing, which is placed on the graphite flange.

[0028] In the above design, the function of the soft graphite ring is that when the flanges on both sides are connected, the soft graphite ring can achieve a sealing effect on the graphite air guide tube through deformation.

[0029] Furthermore, a layer of flexible graphite corrugated tape is attached to the outer surface of the soft graphite ring.

[0030] In the above design, a layer of flexible graphite corrugated tape is attached to the outer surface of the soft graphite ring, which has the beneficial effect of further enhancing the sealing effect.

[0031] In this invention, the docking structure of the graphite air guide tube uses a graphite flange for docking. The graphite flange and the graphite air guide tube are connected in a non-fixed manner. In this design, the graphite flange is sleeved on the graphite air guide tube and can rotate on the graphite air guide tube. The advantage of this rotation is that, during docking, the bolt holes of the two graphite flanges can be quickly aligned by rotating the graphite flange, without the need for alignment through the graphite air guide tube. This alignment method has the advantages of saving time and effort, thus improving the docking efficiency.

[0032] A soft graphite ring is also provided in front of the graphite flange. Furthermore, a flexible graphite corrugated strip is attached to the soft graphite ring. The beneficial effect is that it allows for deviations in the docking angle of the mating graphite air guide tubes. The deviations in the docking angle can be compensated by the deformation of the soft graphite ring and the flexible graphite corrugated strip, thereby improving the docking efficiency. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0034] Figure 1 This is a schematic diagram of the present invention;

[0035] Figure 2 This is a front sectional view of the present invention;

[0036] Figure 3 This is an enlarged schematic diagram of the front cross-section of region A of this utility model;

[0037] Figure 4 This is a front sectional view of the graphite bolt and graphite nut connection of this utility model;

[0038] Figure 5 This is a top view of the graphite bolt and graphite nut connection of this utility model.

[0039] Symbol explanation:

[0040] 1. Graphite air guide; 2. Graphite flange; 3. Flanged edge; 4. Graphite bolt; 5. Graphite nut; 6. Threaded hole. Detailed Implementation

[0041] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0042] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0044] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in an embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0045] Reference Figure 1 , Figure 2 , Figure 3 As shown, a graphite air guide tube with an easy docking structure includes a graphite air guide tube 1, one end of which is provided with a docking structure for connecting another graphite air guide tube. The end with the docking structure is called the docking end.

[0046] The docking structure includes a flange 3 provided at the docking end, and a graphite flange 2 provided behind the flange 3. The graphite flange 2 is rotatably sleeved on the graphite air guide tube 1.

[0047] The outer diameter of the flange 3 is larger than the inner diameter of the graphite flange 2, preventing the graphite flange 2 from falling off from the mating end;

[0048] The flange end face of the graphite flange 2 facing the flange 3 is provided with a groove adapted to be embedded in the flange 3;

[0049] The depth of the groove is 0.5 to 1 mm less than the thickness of the flange 3;

[0050] There are 4 to 6 bolt holes evenly distributed on the graphite flange 2.

[0051] In this embodiment, a flange 3 is provided at the mating end of the graphite air guide cylinder 1. The purpose of the flange 3 is to prevent the graphite air guide cylinder 1 from falling off the graphite flange 2. The graphite flange 2 is fitted onto the graphite air guide cylinder 1 and can rotate on it. When the graphite air guide cylinder 1 is mated, the flanges on both sides can easily align with the bolt holes by rotation, without the need for precise adjustment of the alignment angle of the graphite air guide cylinder 1. Therefore, mating is easier and more convenient. Its beneficial effects are that it saves effort and time, reduces the time required to adjust the mating angle, and improves the efficiency of mating.

[0052] Reference Figure 4 , Figure 5 As shown, the locking components of the graphite flange 2 are graphite bolts 4 and graphite nuts 5;

[0053] When the graphite bolt 4 and graphite nut 5 are tightened, a screw hole 6 is vertically provided at the threaded connection of the graphite bolt 4 and graphite nut 5.

[0054] Half of the screw hole 6 is located on the outside of the external thread of the graphite bolt 4;

[0055] The other half of the screw hole 6 is located inside the internal thread of the graphite nut 5;

[0056] A graphite screw is screwed into the screw hole 6 to lock the graphite bolt 4 and the graphite nut 5.

[0057] In this embodiment, the locking components of the graphite flange 2 are graphite bolts 4 and graphite nuts 5. The advantage of this is that the graphite bolts 4 and graphite nuts 5 have high temperature resistance.

[0058] In this embodiment, a vertical screw hole 6 is provided at the threaded connection of the graphite bolt 4 and the graphite nut 5 in the tightened state. A graphite screw is screwed into the screw hole 6, and the graphite screw locks the graphite bolt 4 and the graphite nut 5. Its beneficial effect is to prevent the graphite bolt 4 and the graphite nut 5 from loosening.

[0059] In this embodiment, the graphite screw is screwed into the screw hole 6 and a recess is left. The recess is filled with high-temperature resistant adhesive. The beneficial effect is that filling the recess with high-temperature resistant adhesive prevents the graphite screw from coming loose from the screw hole 6, which would cause the graphite bolt 4 and graphite nut 5 to be unable to be locked.

[0060] Furthermore, the graphite air guide 1, graphite flange 2, graphite bolt 4, graphite nut 5, and graphite screw are all made of graphite material with the same coefficient of expansion.

[0061] In this embodiment, the graphite air guide 1, graphite flange 2, graphite bolt 4, graphite nut 5, and graphite screw are all made of graphite material with the same coefficient of expansion to avoid the risk of the locking parts breaking due to different expansion systems during high-temperature use. The risks include the following: the graphite air guide 1 cracking the graphite flange 2, the graphite bolt 4 cracking the graphite nut 5, and the graphite screw cracking the graphite nut 5.

[0062] Furthermore, after the graphite screw is screwed into the screw hole 6, a recess is left above the screw hole 6, and the recess is filled with high-temperature resistant adhesive.

[0063] In the above design, the graphite screw is screwed into the screw hole 6 and a recess is left. The recess is filled with high-temperature resistant adhesive. The beneficial effect is that filling the recess with high-temperature resistant adhesive prevents the graphite screw from coming out of the screw hole 6, thus preventing the graphite bolt 4 and graphite nut 5 from being locked in place.

[0064] Furthermore, it also includes a soft graphite ring for sealing, which is placed on the graphite flange 2.

[0065] In this embodiment, the function of the soft graphite ring is that when the flanges on both sides are connected, the soft graphite ring can achieve a sealing effect on the graphite air guide tube 1 through deformation.

[0066] Furthermore, a layer of flexible graphite corrugated tape is attached to the outer surface of the soft graphite ring.

[0067] In this embodiment, a flexible graphite corrugated tape is attached to the outer surface of the soft graphite ring, which has the beneficial effect of further enhancing the sealing effect.

[0068] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments may be described, i.e., those features that are not relevant to the currently considered best mode for carrying out the present invention, or those features that are not relevant to implementing the present invention.

[0069] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A graphite gas guide tube with an easily dockable structure, comprising a graphite gas guide tube, characterized in that, One end of the graphite air guide tube is provided with a docking structure for connecting another graphite air guide tube. The end with the docking structure is called the docking end. The docking structure includes a flange at the docking end and a graphite flange behind the flange, the graphite flange being rotatably fitted onto the graphite air guide tube. The outer diameter of the flange is larger than the inner diameter of the graphite flange, preventing the graphite flange from falling off the mating end; The graphite flange has a groove on the flange end face facing the flange to fit the flange. The depth of the groove is 0.5 to 1 mm less than the thickness of the flange; The graphite flange has 4 to 6 bolt holes evenly distributed on it.

2. The graphite air guide tube with an easily dockable structure according to claim 1, characterized in that, The locking mechanism for the graphite flange uses graphite bolts and graphite nuts; When the graphite bolt and graphite nut are tightened, a threaded hole is vertically provided at the threaded connection of the graphite bolt and graphite nut; Half of the screw hole is located on the outside of the external thread of the graphite bolt; The other half of the screw hole is located inside the internal thread of the graphite nut; A graphite screw is screwed into the screw hole to lock the graphite bolt and graphite nut in place.

3. The graphite air guide tube with an easily dockable structure according to claim 2, characterized in that, The graphite air guide, graphite flange, graphite bolt, graphite nut, and graphite screw are all made of graphite material with the same coefficient of expansion.

4. The graphite air guide tube with an easily dockable structure according to claim 2, characterized in that, After the graphite screw is screwed into the screw hole, a recess is left above the screw hole, and the recess is filled with high-temperature resistant adhesive.

5. The graphite air guide tube with an easily dockable structure according to claim 1, characterized in that, It also includes a soft graphite ring for sealing, which is placed on the graphite flange.

6. The graphite air guide tube with an easily dockable structure according to claim 5, characterized in that, A layer of flexible graphite corrugated tape is attached to the outer surface of the soft graphite ring.

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