External gas shunting automatic sealing connection structure for high-temperature vacuum furnace

Abstract

The invention belongs to the technical field of vacuum furnaces, and particularly relates to an external gas shunting automatic sealing connection structure for a high-temperature vacuum furnace, the external gas shunting automatic sealing connection structure comprises a vacuum furnace body, a sealing cover and driving mechanisms, the outer end of the sealing cover is provided with two sets of symmetrically arranged driving mechanisms, and each driving mechanism comprises a connecting piece, two transverse joining plate pieces arranged at intervals, a base and a driving assembly; the connecting piece is connected between the sealing cover and the connecting plates, the two connecting plates are slidably connected with the sliding rails through sliding blocks, rectangular grooves are formed in the connecting plates, one end of the driving assembly is slidably connected with the rectangular grooves, and the other end of the driving assembly is rotationally connected with the base. The sealing cover and the vacuum furnace body can be well driven to be subjected to furnace closing operation, so that automatic sealing connection during furnace closing is achieved, the technical problem that the sealing effect of a gas inlet pipeline is poor due to the fact that the sealing performance of the vacuum furnace body is poor is effectively solved, and the strict requirement for the vacuum environment in the external gas inlet process is well met.

Description

Technical Field

[0001] The present invention belongs to the technical field of vacuum furnaces, and particularly relates to an external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace. Background Art

[0002] A vacuum furnace is a furnace that evacuates some substances in the furnace cavity within a specific space by using a vacuum system (carefully assembled from components such as vacuum pumps, vacuum measuring devices, and vacuum valves), so that the pressure in the furnace cavity is less than one standard atmospheric pressure, and the space in the furnace cavity thus achieves a vacuum state. This is the vacuum furnace.

[0003] Rare earth metals, also known as rare earth elements, are the general names of 17 elements including scandium, yttrium, and lanthanide series in Group IIIB of the periodic table, and are commonly represented by R or RE; from the discovery of the first rare earth element yttrium in 1794 to the discovery of the natural rare earth element promethium in 1972, it took 178 years for people to find all 17 rare earth elements in nature; the luster of rare earth metals is between silver and iron and the chemical activity of rare earth metals is very strong; after beneficiation and concentration of rare earth ores, etc., it is necessary to separate and purify them to form rare earth metal raw materials, and use a vacuum furnace for smelting operations, and during the vacuum smelting process, it is necessary to add external gas into the furnace body.

[0004] In the prior art, when the cover and the furnace body of a vacuum furnace are combined, there is a poor sealing performance, resulting in a poor sealing effect of the intake pipeline, which in turn affects the vacuum state of the furnace body and cannot better meet the strict requirements for the vacuum environment during the intake of external gas, ultimately reducing the smelting effect of rare earth metals. Therefore, based on the above defects, the applicant has proposed a better technical solution to solve the above technical problems.

[0005] The information disclosed in this background art section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0006] The present invention aims to solve the above technical problems, and provides an external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace, mainly solving the technical problems that in the prior art, when the cover and the furnace body of a vacuum furnace are sealed, there is a poor sealing performance, resulting in a poor sealing effect of the intake pipeline, which in turn affects the vacuum state of the furnace body and cannot better meet the strict requirements for the vacuum environment during the intake of external gas, ultimately reducing the smelting effect of rare earth metals.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] An external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace, comprising a vacuum furnace body, a cover, and a driving mechanism. The vacuum furnace body includes a main body part and a sliding part.

[0009] A sealing groove for accommodating the cover is provided at the boss of the sliding part. Two sets of symmetrically arranged driving mechanisms are provided at the outer end of the cover. A slide rail is vertically arranged between the two sets of driving mechanisms.

[0010] The driving mechanism includes a connecting piece, two horizontally and spaced connecting plate parts, a base, and a driving component. The connecting piece is connected between the cover and the connecting plate part. Both connecting plate parts are vertically slidably connected to the slide rail through sliding blocks.

[0011] A rectangular groove is provided on the connecting plate part. One end of the driving component is slidably connected to the rectangular groove, and the other end is rotatably connected to the base.

[0012] Preferably, the driving component includes a driving piece and a first cylinder. The driving piece includes two V-shaped pieces and a connecting block. The connecting block is connected between the first ends of the two V-shaped pieces.

[0013] A positioning block is provided on the side wall of the slide rail. One end of the first cylinder is rotatably connected to the positioning block, and the other end is rotatably connected to the middle of the connecting block.

[0014] A sliding circular piece is rotatably connected to the second end of the V-shaped piece. The sliding circular piece is slidably connected in the rectangular groove. The third end of the V-shaped piece is rotatably connected to the base.

[0015] When the cylinder is driven, by driving the V-shaped piece to slide in the rectangular groove, the cover is pushed to be embedded in the sealing groove, or the cover is pulled away from the sealing groove.

[0016] Preferably, a limiting block is provided on the base. When the V-shaped piece pushes the cover to be embedded in the sealing groove, the outer end face of the connecting block abuts against the limiting block.

[0017] Preferably, a fastening mechanism is further included. The fastening mechanism includes a second cylinder and a fastening component. The second cylinder is arranged on the outer side wall of the main body part, and its telescopic end is connected to the fastening component. The fastening component is slidably connected to the outer side wall of the sliding part.

[0018] Preferably, the fastening component includes a sliding ring piece, a fastening spring, and a connecting column.

[0019] The telescopic end of the second cylinder is connected to the sliding ring piece. A sliding cavity is provided at the telescopic end of the second cylinder.

[0020] The sliding ring is slidably connected to the outer side wall of the sliding part. The fastening spring is connected between the sliding ring and the boss. One end of the connecting column is arranged at the inner end of the cover, and the other end sequentially passes through the boss, the fastening spring and the sliding ring and extends into the sliding cavity.

[0021] Preferably, a sealing gasket is embedded in the sealing groove.

[0022] Preferably, a guiding column is arranged at the inner end of the cover, and a deep hole for the guiding column to slide is arranged in the sliding part.

[0023] Due to the above technical solutions, the beneficial effects of the present invention are as follows:

[0024] 1. The present invention provides an external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace. Its structure is ingeniously designed and simple and convenient to use. Two groups of driving mechanisms symmetrically arranged at the outer end of the cover are adopted, and the unique mechanical structure can evenly act on the cover, enabling better driving of the cover and the vacuum furnace body for furnace closing operation, thereby realizing automatic sealing connection during furnace closing, effectively solving the technical problem of poor sealing effect of the intake pipeline due to poor sealing of the vacuum furnace body, and better meeting the strict requirements for the vacuum environment during the external gas intake process.

[0025] 2. In the present invention, the driving mechanism adopts a triangular connection mode of a connecting plate, a base and a driving component, which can maximize the stability of the driving mechanism and better apply a thrust to the cover, so that the cover can be tightly embedded in the sealing groove on the boss arranged in the sliding part, thereby improving the sealing effect during furnace closing.

[0026] 3. In the driving component of the present invention, the driving part is arranged in a way that two V-shaped pieces and a connecting block are connected to each other. By using three-point force, the stability of the driving mechanism is improved; one end drives the second end of the V-shaped piece to slide in the rectangular groove on the connecting plate through the extension or contraction of the first cylinder, and at the same time, the third end of the V-shaped piece is rotatably connected to the base; during the process of the second end of the V-shaped piece sliding in the rectangular groove, the cover is pushed and embedded in the sealing groove, or the cover is pulled away from the sealing groove, realizing the automatic sealing connection operation of the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the present invention;

[0028] Figure 2 is a side view of the present invention;

[0029] Figure 3 is Figure 1 an enlarged schematic view of part A of

[0030] Figure 4 For Figure 2 the enlarged schematic view of part B of

[0031] Figure 5 the structural schematic view of the driving part of the present invention;

[0032] Figure 6 For Figure 1 of Figure 1 the enlarged schematic view of part C of

[0033] The main component symbols in the figure are explained as follows:

[0034] 1. Vacuum furnace body; 11. Main body part; 12. Sliding part; 121. Sealing groove; 2. Sealing cover; 3. Driving mechanism; 31. Connecting part; 32. Connecting plate part; 321. Rectangular groove; 33. Base; 34. Driving component; 341. Driving part; 3411. V-shaped piece; 3412. Connecting block; 342. Cylinder 1; 4. Slide rail; 5. Sliding block; 6. Limiting block; 7. Fastening mechanism; 71. Cylinder 2; 711. Sliding cavity; 72. Fastening component; 721. Sliding ring part; 722. Fastening spring; 723. Connecting column; 8. Guide column; 100. Positioning block; 200. Sliding circular part; 300. Boss; 400. Sealing gasket; 500. Deep hole position. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment

[0037] As Figures 1 to 6 shown, an external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace includes a vacuum furnace body 1, a sealing cover 2 and a driving mechanism 3. The vacuum furnace body 1 includes a main body part 11 and a sliding part 12. A sealing groove 121 for accommodating the sealing cover 2 is provided at the boss 300 of the sliding part 12. Two groups of symmetrically arranged driving mechanisms 3 are provided at the outer end of the sealing cover 2, and a slide rail 4 is vertically arranged between the two groups of driving mechanisms 3; the driving mechanism 3 includes a connecting part 31, two horizontally and spaced connecting plate parts 32, a base 33 and a driving component 34. The connecting part 31 is connected between the sealing cover 2 and the connecting plate part 32. Both connecting plate parts 32 are vertically slidably connected to the slide rail 4 through sliding blocks 5. A rectangular groove 321 is provided on the connecting plate part 32. One end of the driving component 34 is slidably connected to the rectangular groove 321, and the other end is rotatably connected to the base 33.

[0038] The present invention adopts two sets of driving mechanisms 3 symmetrically arranged at the outer end of the cover 2, and by virtue of its unique mechanical structure, it can act on the cover 2 with equal force, and can preferably drive the cover 2 to perform the furnace closing operation with the vacuum furnace body 1, so as to realize automatic sealing connection during furnace closing, effectively solve the technical problem that the sealing performance of the vacuum furnace body 1 is poor, resulting in poor sealing effect of the intake pipeline, and preferably meet the strict requirements for the vacuum environment during the external gas intake process.

[0039] At the same time, the driving mechanism 3 adopts a triangular connection method of the connecting plate member 32, the base 33 and the driving component 34, which can maximize the stability of the driving mechanism 3 and can preferably apply a thrust to the cover 2, so that the cover 2 can be tightly embedded in the sealing groove 121 provided on the boss 300 of the sliding part 12, thereby improving the sealing effect during furnace closing.

[0040] External gas intake and exhaust pipelines (not shown in the figure) are provided on the cover 2. This part of the technical solution belongs to a conventional technical setting and will not be elaborated here.

[0041] In this embodiment, please refer to Figure 1 、 Figure 3 and Figure 5 , the driving component 34 includes a driving part 341 and a first cylinder 342. The driving part 341 includes two V-shaped pieces 3411 and a connecting block 3412. The connecting block 3412 is connected between the first ends of the two V-shaped pieces 3411. A positioning block 100 is provided on the side wall of the slide rail 4. One end of the first cylinder 342 is rotatably connected to the positioning block 100, and the other end is rotatably connected to the middle of the connecting block 3412. A sliding circular piece 200 is rotatably connected to the second end of the V-shaped piece 3411. The sliding circular piece 200 is slidably connected in the rectangular groove 321. The third end of the V-shaped piece 3411 is rotatably connected to the base 33. When the driving cylinder 341 is actuated, by driving the V-shaped piece 3411 to slide in the rectangular groove 321, the cover 2 is pushed to be embedded in the sealing groove 121, or the cover 2 is pulled away from the sealing groove 121.

[0042] In the present invention, the driving part 34 adopts a connection method of two V-shaped pieces 3411 and a connecting block 3412, and the stability of the driving mechanism 3 is improved by three-end force application; one end uses the extension or contraction of the first cylinder 342 to drive the second end of the V-shaped piece 3411 to slide in the rectangular groove 321 on the connecting plate member 32, and at the same time the third end of the V-shaped piece 3411 is rotatably connected to the base 33; during the process of the second end of the V-shaped piece 3411 sliding in the rectangular groove 321, the cover 2 is pushed and embedded in the sealing groove 121, or the cover 2 is pulled away from the sealing groove 121, realizing the automatic sealing connection operation of the cover 2.

[0043] Specifically, a limiting block 6 is provided on the base 33. When the V-shaped piece 3411 pushes the cover 2 to be embedded in the sealing groove 121, the outer end surface of the connecting block 3412 abuts against the limiting block 6. Rubber buffers (not shown in the figure) can be provided on the mutually contacting surfaces of the limiting block 6 and the V-shaped piece 3411, which can better protect both of them and prevent damage during contact, and reduce the noise generated during contact by using their flexible contact.

[0044] In this embodiment, please refer to Figure 1 and Figure 6 , the present invention further includes a fastening mechanism 7. The fastening mechanism 7 includes a second cylinder 71 and a fastening component 72. The second cylinder 71 is provided on the outer side wall of the main body portion 11, and its telescopic end is connected to the fastening component 72. The fastening component 72 is slidably connected to the outer side wall of the sliding portion 12; the fastening mechanism 7 and the driving mechanism 3 can form two opposite acting forces on the boss 300, which can better improve the sealing degree between the cover 2 and the sealing groove 121 on the boss 300.

[0045] Specifically, the fastening component 72 includes a sliding ring member 721, a fastening spring 722 and a connecting column 723. The telescopic end of the second cylinder 71 is connected to the sliding ring member 721. A sliding cavity 711 is provided at the telescopic end of the second cylinder 71. The sliding ring member 721 is slidably connected to the outer side wall of the sliding portion 12. The fastening spring 722 is connected between the sliding ring member 721 and the boss 300. One end of the connecting column 723 is provided on the inner end of the cover 2, and the other end sequentially passes through the boss 300, the fastening spring 722 and the sliding ring member 721 and extends into the sliding cavity 711; during operation, the second cylinder 71 drives the sliding ring member 721 to move downward and compress the fastening spring 722, and uses the acting force of the fastening spring 722 to press against the boss 300, combined with the thrust given to the cover 2 by the driving mechanism 3 to form two opposite acting forces on the boss 300, so as to better achieve automatic sealing connection during furnace closing, and effectively solve the technical problem that the sealing performance of the vacuum furnace body 1 is not good, resulting in poor sealing effect of the intake pipeline.

[0046] In this embodiment, please refer to Figure 6 , a sealing gasket 400 is embedded in the sealing groove 121; a guiding column 8 is provided on the inner end of the cover 2, and a deep hole 500 for the guiding column 8 to slide is provided in the sliding portion 12.

[0047] The working principle of the present invention:

[0048] The present invention provides an external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace. Specifically, during use, as Figure 1 shown, Figure 1 is a schematic diagram of the cover 2 in an open state. At this time, the second end of the V-shaped piece 3411 is at the right end in the rectangular groove 321 on the connecting plate member 32;

[0049] When it is necessary to seal the cover 2 to the sealing groove 121, the extension drive of the first cylinder 342 is used to drive the second end of the V-shaped piece 3411 to slide to the left end in the rectangular groove 321. At this time, the V-shaped piece 3411 applies an upward thrust to the cover 2 to push and inlay the cover 2 in the sealing groove 121. At the same time, the second cylinder 71 drives the sliding ring member 721 to move downward and compress the fastening spring 722, and the acting force of the fastening spring 722 is used to press against the boss 300. Then, two opposite acting forces can be formed on the boss 300 by combining the thrust given by the V-shaped piece 3411 to the cover 2, so as to better achieve automatic sealing connection during furnace combination, and effectively solve the technical problem that the sealing performance of the vacuum furnace body 1 is not good, resulting in poor sealing effect of the intake pipeline.

[0050] When it is necessary to open the cover 2, just drive and operate the first cylinder 342 and the second cylinder 71 in the reverse direction according to the above steps.

[0051] The above description is a detailed description of the preferred and feasible embodiment of the present invention, but the embodiment is not used to limit the patent application scope of the present invention. Any equivalent changes or modifications completed under the technical spirit prompted by the present invention shall fall within the patent scope covered by the present invention.

Claims

1. An external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace, characterized in that It includes a vacuum furnace body (1), a cover (2) and a driving mechanism (3). The vacuum furnace body (1) includes a main body part (11) and a sliding part (12). A sealing groove (121) for accommodating the cover (2) is provided at the boss (300) of the sliding part (12). Two sets of symmetrically arranged driving mechanisms (3) are provided at the outer end of the cover (2). A slide rail (4) is vertically arranged between the two sets of driving mechanisms (3). The driving mechanism (3) includes a connecting piece (31), two horizontally and spaced connecting plate members (32), a base (33) and a driving component (34). The connecting piece (31) is connected between the cover (2) and the connecting plate member (32). Both of the two connecting plate members (32) are vertically slidably connected to the slide rail (4) through sliding blocks (5). A rectangular groove (321) is provided on the connecting plate member (32). One end of the driving component (34) is slidably connected to the rectangular groove (321), and the other end is rotatably connected to the base (33).

2. The external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace according to claim 1, characterized in that, The driving component (34) includes a driving piece (341) and a first cylinder (342). The driving piece (341) includes two V-shaped pieces (3411) and a connecting block (3412). The connecting block (3412) is connected between the first ends of the two V-shaped pieces (3411). A positioning block (100) is provided on the side wall of the slide rail (4). One end of the first cylinder (342) is rotatably connected to the positioning block (100), and the other end is rotatably connected to the middle of the connecting block (3412). A sliding circular piece (200) is rotatably connected to the second end of the V-shaped piece (3411). The sliding circular piece (200) is slidably connected in the rectangular groove (321). The third end of the V-shaped piece (3411) is rotatably connected to the base (33). When the cylinder is driven, by driving the V-shaped piece (3411) to slide in the rectangular groove (321), the cover (2) is pushed to be embedded in the sealing groove (121), or the cover (2) is pulled away from the sealing groove (121).

3. The external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace according to claim 2, wherein, A limiting block (6) is provided on the base (33). When the V-shaped piece (3411) pushes the cover (2) to be embedded in the sealing groove (121), the outer end face of the connecting block (3412) abuts against the limiting block (6).

4. The external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace according to claim 1, wherein, It further includes a fastening mechanism (7). The fastening mechanism (7) includes a second cylinder (71) and a fastening component (72). The second cylinder (71) is provided on the outer side wall of the main body part (11), and its telescopic end is connected to the fastening component (72). The fastening component (72) is slidably connected to the outer side wall of the sliding part (12).

5. The external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace according to claim 4, wherein The fastening component (72) includes a sliding ring part (721), a fastening spring (722) and a connecting column (723). The telescopic end of the second cylinder (71) is connected to the sliding ring part (721). A sliding cavity (711) is provided at the telescopic end of the second cylinder (71). The sliding ring member (721) is slidably connected to the outer wall of the sliding portion (12). The fastening spring (722) is connected between the sliding ring member (721) and the boss (300). One end of the connecting column (723) is provided on the inner end of the cover (2), and the other end sequentially passes through the boss (300), the fastening spring (722) and the sliding ring member (721) and extends into the sliding cavity (711).

6. The external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace according to claim 1, wherein, A sealing gasket (400) is embedded in the sealing groove (121).

7. An external gas shunt automatic sealing connection structure for a high-temperature vacuum furnace as described in claim 1, characterized in that, A guide post (8) is provided on the inner end of the cover (2), and a deep hole (500) for the guide post (8) to slide is provided in the sliding portion (12).

Images