Graphite bolt locking mechanism of graphite boat

Abstract

The utility model relates to the field of machinery, in particular to a locking technology of threaded connection. A graphite bolt locking mechanism of a graphite boat comprises a graphite disc serving as a tray and a hollow graphite rod serving as a supporting rod, and the tray and the supporting rod are detachably connected through threads. A limiting bulge is arranged at the lower part of the bolt end; the locking mechanism is used for limiting relative rotation of the tray and the supporting rod after the tray is in threaded connection with the supporting rod; the locking mechanism comprises a screw hole formed in the threaded connection position of the tray and the supporting rod. The screw hole is vertically arranged and is divided into two halves; half of the screw hole is formed in the inner side of the tray; the other half of the screw hole is formed in the outer side of the supporting rod; the limiting protrusions limit the screwing state of the tray and the supporting rod in the mode that the two halves of the screw hole are aligned and combined into the screw hole. A graphite bolt is further included, and the graphite bolt is locked in the screw hole to clamp the tray and the supporting rod. Therefore, the problem that threaded connection of the tray and the supporting rod is loosened is solved.

Description

Technical Field

[0001] This utility model relates to the field of machinery, specifically to locking technology for threaded connections. 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] A graphite boat structure is formed by connecting a graphite disk and a graphite rod through a thread. This type of graphite boat structure is simple and easy to process. However, the graphite disk is connected to the graphite rod through a thread, which is prone to rotation and loosening during use, resulting in an unstable connection and affecting its use. Utility Model Content

[0004] The purpose of this invention is to provide a graphite bolt locking mechanism for a graphite boat to solve at least one of the above-mentioned technical problems.

[0005] The technical problem solved by this utility model can be achieved by the following technical solution:

[0006] The graphite bolt locking mechanism of the graphite boat includes a graphite disk as a tray and a hollow graphite rod as a support rod. The tray has a threaded hole in the middle and a bolt, called the bolt end, is provided on the upper part of the support rod. The threaded hole of the tray and the bolt end of the support rod are detachably connected by threads.

[0007] A limiting protrusion is provided at the lower part of the bolt end;

[0008] When the threaded hole of the tray passes through the bolt end of the threaded connection support rod, the lower end face of the tray abuts against the upper end face of the protrusion, thus tightening it.

[0009] It also includes a locking mechanism that restricts the relative rotation of the tray and the support rod after they are threadedly connected;

[0010] The locking mechanism includes a threaded hole located at the threaded connection between the tray and the support rod;

[0011] The screw hole is vertically positioned and divided into two halves;

[0012] Half of the screw hole is located on the inside of the tray;

[0013] The other half of the screw hole is located on the outside of the support rod;

[0014] The limiting protrusion restricts the state of the tray and support rod to be tightened, so that the two halves of the screw hole are aligned and merged into a screw hole;

[0015] It also includes a graphite bolt, which is locked into the screw hole to hold the tray and support rod in place.

[0016] In the above design, a vertical screw hole is provided at the threaded connection between the tray and the support rod. A graphite bolt is screwed into the screw hole to lock the tray and the support rod in place. The beneficial effect is that when the tray and the support rod are tightened, the two screw holes are combined into a complete screw hole. The graphite bolt is screwed into the complete screw hole, locking the tray and the support rod so that they cannot rotate, thereby locking the tightened state of the tray and the support rod, making the connection between the tray and the support rod more secure.

[0017] Furthermore, a groove is provided in the middle of the upper surface of the tray, and a threaded hole is provided in the middle of the groove;

[0018] The locking mechanism also includes an oblique hole that leads from the threaded connection between the tray and the support rod on one side of the tray to the support rod on the other side. The oblique hole is a tapered hole that is larger at the entrance and smaller at the depth.

[0019] A graphite pin is inserted into the oblique hole. The graphite pin is a tapered pin adapted to the tapered shape of the oblique hole.

[0020] When the graphite pin is inserted into the angled hole, the upper part of the pin protrudes from the angled hole but is lower than the upper surface of the tray.

[0021] In the above design, a groove is provided on the upper surface of the tray. The effect of this groove is that it increases the overflow area of ​​the protective gas exiting from the hollow through hole in the support rod, preventing the workpiece from blocking the gas outlet when placed on the tray. The oblique hole is a tapered hole, which, together with the tapered pin, allows the pin and the oblique hole to be inserted more tightly, thereby locking the threaded connection between the tray and the support rod and preventing the tray from rotating on the support rod. The beneficial effect is that the oblique hole and the graphite pin further enhance the locking effect, and the graphite pin can share the shearing effect of the rotation of the tray and the support rod on the graphite bolt, preventing the graphite bolt from being cut in half due to the shearing action, thus losing the locking effect on the rotation of the threads of the tray and the support rod.

[0022] Furthermore, the tray, support rod, graphite bolts, and graphite pins are made of graphite material with the same coefficient of expansion.

[0023] In the above design, the tray, support rod, graphite bolt, and graphite pin are made of graphite material with the same coefficient of expansion, which can prevent the tray from breaking due to different expansion systems during the heating process.

[0024] Furthermore, the depth of the screw hole is greater than the length of the graphite bolt;

[0025] The graphite bolt has a slotted groove at the top;

[0026] After the graphite bolt is screwed in, a recess is left above the bolt hole, and the recess is filled with high-temperature resistant adhesive.

[0027] In the above design, the top of the graphite bolt is provided with a slotted groove, which makes it easy to screw in or remove the graphite bolt. Its advantage is that the graphite bolt can be removed, making it convenient to replace the new tray after disassembling the tray and support rod. The tray is replaceable, which can flexibly adapt to the processing needs of different graphite boats.

[0028] In the above design, the graphite bolt 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 bolt from coming out of the screw hole, thereby causing the locking mechanism to fail.

[0029] Furthermore, a graphite elastic gasket is provided between the lower end face of the tray and the raised upper end face.

[0030] In the above design, the elastic gasket placed between the tray and the protrusion can prevent the threaded connection from loosening.

[0031] This invention features a vertical screw hole at the threaded connection between the tray and the support rod. A graphite bolt is screwed into the screw hole to secure the tray and the support rod, thus preventing loosening after the threaded connection between the tray and the support rod is tightened, making the connection between the tray and the support rod more secure.

[0032] Another auxiliary locking mechanism is also provided, which uses a pin and a slanted hole to pass through the threaded connection surface of the tray and the support rod, thereby locking the tray and the support rod. Its beneficial effect is that the slanted hole and the graphite pin further enhance the locking effect, and the graphite pin can share the shearing effect of the rotation of the tray and the support rod on the graphite bolt, preventing the graphite bolt from being cut in half due to the shearing action, thus losing the locking effect on the rotation of the threads of the tray and the support rod. 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 front sectional view of the present invention;

[0035] Figure 2 This is a top 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] Symbol explanation:

[0038] 1. Tray; 2. Support rod; 3. Screw hole; 4. Protrusion; 11. Groove. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Reference Figure 1 , Figure 2 , Figure 3 As shown, the graphite bolt locking mechanism of the graphite boat includes a graphite disc as a tray 1 and a hollow graphite rod as a support rod 2 that provides support. The tray 1 has a threaded hole in the middle and the support rod 2 has a bolt at the top, referred to as the bolt end. The threaded hole of the tray 1 and the bolt end of the support rod 2 are detachably connected by threads.

[0044] A limiting protrusion 4 is provided at the lower part of the bolt end;

[0045] When the threaded hole of the tray 1 is connected to the bolt end of the support rod 2, the lower end face of the tray 1 abuts against the upper end face of the protrusion 4, which serves to tighten it.

[0046] It also includes a locking mechanism that restricts the relative rotation of the tray 1 and the support rod 2 after they are threadedly connected;

[0047] The locking mechanism includes a screw hole 3 located at the threaded connection between the tray 1 and the support rod 2;

[0048] The screw hole 3 is vertically arranged and divided into two halves;

[0049] Half of the screw hole 3 is located on the inside of the tray 1;

[0050] The other half of the screw hole 3 is located on the outside of the support rod 2;

[0051] The limiting protrusion 4 restricts the state of the tray 1 and the support rod 2 to be tightened, so that the two halves of the screw hole 3 are aligned and merged into the screw hole 3;

[0052] It also includes a graphite bolt, which is locked into the screw hole 3 to hold the tray 1 and the support rod 2 in place.

[0053] In this embodiment, a vertical screw hole 3 is provided at the threaded connection between the tray 1 and the support rod 2. A graphite bolt is screwed into the screw hole 3 to lock the tray 1 and the support rod 2. The beneficial effect is that when the tray 1 and the support rod 2 are tightened, the two halves of the screw hole 3 are combined into a complete screw hole 3. The graphite bolt is screwed into the complete screw hole 3, locking the tray 1 and the support rod 2 so that they cannot rotate, thereby locking the tightened state of the tray 1 and the support rod 2, making the connection between the tray 1 and the support rod 2 more secure.

[0054] Furthermore, a groove 11 is provided in the middle of the upper end face of the tray 1, and a threaded hole is provided in the middle of the groove 11;

[0055] The locking mechanism also includes an oblique hole that leads from one side of the tray 1 to the other side of the support rod 2 at the threaded connection between the tray 1 and the support rod 2. The oblique hole is a tapered hole with a large entrance and a small depth.

[0056] A graphite pin is inserted into the oblique hole. The graphite pin is a tapered pin adapted to the tapered shape of the oblique hole.

[0057] The graphite pin is inserted into the inclined hole, with the upper part protruding from the inclined hole but below the upper surface of tray 1.

[0058] In this embodiment, a groove 11 is provided on the upper surface of the tray 1. The effect of this groove 11 is that it increases the overflow area of ​​the protective gas from the hollow through hole of the support rod 2, preventing the workpiece from blocking the gas outlet when placed on the tray 1. The oblique hole is a tapered hole, which, together with the tapered pin, allows the pin and the oblique hole to be inserted more tightly, thereby locking the threaded connection between the tray 1 and the support rod 2 and preventing the tray 1 from rotating on the support rod 2. The beneficial effect is that the oblique hole and the graphite pin further enhance the locking effect, and the graphite pin can share the shearing effect of the rotation of the tray 1 and the support rod 2 on the graphite bolt, preventing the graphite bolt from being cut in half due to the shearing action, thus losing the locking effect on the threaded rotation of the tray 1 and the support rod 2.

[0059] Furthermore, the pallet 1, support rod 2, graphite bolts, and graphite pins are all made of graphite material with the same coefficient of expansion.

[0060] In this embodiment, the tray 1, support rod 2, graphite bolts and graphite pins are made of graphite material with the same coefficient of expansion, which can prevent the tray 1 from breaking due to different expansion systems during the heating process.

[0061] Furthermore, the depth of the screw hole 3 is greater than the length of the graphite bolt;

[0062] The graphite bolt has a slotted groove 11 at its top;

[0063] After the graphite bolt is screwed in, a recess is left above the bolt hole 3, and the recess is filled with high-temperature resistant adhesive.

[0064] In this embodiment, the top of the graphite bolt is provided with a slotted groove 11, which allows the graphite bolt to be easily screwed in or removed. The advantage is that the graphite bolt can be removed, making it convenient to replace the new tray 1 after disassembling the tray 1 and the support rod 2. The tray 1 is replaceable, which can flexibly adapt to the processing needs of different graphite boats.

[0065] In this embodiment, the graphite bolt is screwed into the screw hole 3 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 bolt from coming out of the screw hole 3, thereby causing the locking effect of the locking mechanism to fail.

[0066] Furthermore, a graphite elastic gasket is provided between the lower end face of the tray 1 and the upper end face of the protrusion 4.

[0067] In this embodiment, the elastic gasket provided between the tray 1 and the protrusion 4 can prevent the threaded connection from loosening.

[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 bolt locking mechanism for a graphite boat, comprising a graphite disk as a tray and a hollow graphite rod for supporting the boat, characterized in that, The pallet has a threaded hole in the middle and a bolt, called the bolt end, is located on the upper part of the support rod. The threaded hole of the pallet and the bolt end of the support rod are detachably connected by threads. A limiting protrusion is provided at the lower part of the bolt end; When the threaded hole of the tray passes through the bolt end of the threaded connection support rod, the lower end face of the tray abuts against the upper end face of the protrusion, thus tightening it. It also includes a locking mechanism that restricts the relative rotation of the tray and the support rod after they are threadedly connected; The locking mechanism includes a threaded hole located at the threaded connection between the tray and the support rod; The screw hole is vertically positioned and divided into two halves; Half of the screw hole is located on the inside of the tray; The other half of the screw hole is located on the outside of the support rod; The limiting protrusion restricts the state of the tray and support rod to be tightened, so that the two halves of the screw hole are aligned and merged into a screw hole; It also includes a graphite bolt, which is locked into the screw hole to hold the tray and support rod in place.

2. The graphite bolt locking mechanism for the graphite boat according to claim 1, characterized in that, A groove is provided in the middle of the upper surface of the tray, and a threaded hole is provided in the middle of the groove; The locking mechanism also includes an oblique hole that leads from the threaded connection between the tray and the support rod on one side of the tray to the support rod on the other side. The oblique hole is a tapered hole that is larger at the entrance and smaller at the depth. A graphite pin is inserted into the oblique hole. The graphite pin is a tapered pin adapted to the tapered shape of the oblique hole. When the graphite pin is inserted into the angled hole, the upper part of the pin protrudes from the angled hole but is lower than the upper surface of the tray.

3. The graphite bolt locking mechanism for the graphite boat according to claim 2, characterized in that, The tray, support rod, graphite bolts, and graphite pins are all made of graphite material with the same coefficient of expansion.

4. The graphite bolt locking mechanism for the graphite boat according to claim 1, characterized in that: The depth of the screw hole is greater than the length of the graphite bolt; The graphite bolt has a slotted groove at the top; After the graphite bolt is screwed in, a recess is left above the bolt hole, and the recess is filled with high-temperature resistant adhesive.

5. The graphite bolt locking mechanism for the graphite boat according to claim 1, characterized in that, A graphite elastic gasket is also provided between the lower end face of the tray and the raised upper end face.

Images