Automatic waste gas collecting and treating device for vacuum furnace

Abstract

The invention belongs to the technical field of vacuum furnaces, and particularly relates to an automatic waste gas collection and treatment device for a vacuum furnace, the automatic waste gas collection and treatment device comprises a waste gas recovery treatment pool, a vacuum furnace body and an intermittent gas guide mechanism, the vacuum furnace body is connected with the intermittent gas guide mechanism through a gas guide pipe, and the intermittent gas guide mechanism is rotatably connected in the waste gas recovery treatment pool; the intermittent air guide mechanism comprises a limiting ring piece, an air leakage rotating piece and an intermittent air guide assembly. The intermittent gas guide mechanism is arranged between the waste gas recovery treatment pool and the vacuum furnace body, waste gas in the vacuum furnace body is intermittently extruded in a limited area, then the pressure intensity is increased, the waste gas can be effectively guided into the waste gas recovery treatment pool instead of being limited in the limited area, the diffusion range of the waste gas in the waste gas recovery treatment pool is expanded, and the waste gas recovery treatment effect is improved. The waste gas collection and treatment effect and the working efficiency are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vacuum furnaces, and particularly relates to an automatic exhaust gas collection and treatment device for a 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 a vacuum pump, a vacuum measuring device, and a vacuum valve), so that the pressure in the furnace cavity is less than one standard atmosphere, and the space in the furnace cavity thus achieves a vacuum state. This is a vacuum furnace.

[0003] Rare earth metals, also known as rare earth elements, are the general term for 17 elements including scandium, yttrium, and the 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, after 178 years, people finally found 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 ore dressing and concentration of rare earth ores, etc., it is necessary to separate and purify them to form rare earth metal raw materials, and a reduction process is carried out using a vacuum furnace.

[0004] During the reaction process of a vacuum furnace, a large amount of harmful exhaust gas that needs to be treated is generated. In the prior art, during the collection and treatment of the exhaust gas of a vacuum furnace, the exhaust gas is generally directly introduced into a treatment pool, and the exhaust gas can only be adsorbed in a limited area and is difficult to diffuse to a large range outside, resulting in poor treatment effect and low efficiency in the whole exhaust gas treatment process. Therefore, based on the above defects, the applicant proposes a better technical solution to solve the above technical problems.

[0005] The information disclosed in this background art section is only intended to enhance the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of implication 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 automatic exhaust gas collection and treatment device for a vacuum furnace, mainly solving the technical problems that in the prior art, during the collection and treatment of the exhaust gas of a vacuum furnace, the exhaust gas is generally directly introduced into a treatment pool, and the exhaust gas can only be adsorbed in a limited area and is difficult to diffuse to a large range outside, resulting in poor treatment effect and low efficiency in the whole exhaust gas treatment process.

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

[0008] An automatic exhaust gas collection and treatment device for a vacuum furnace includes an exhaust gas recovery and treatment pool, a vacuum furnace body, and an intermittent gas guiding mechanism.

[0009] The vacuum furnace body is connected to the intermittent air guiding mechanism through an air guiding pipe, and the intermittent air guiding mechanism is rotatably connected in the waste gas recovery and treatment pool.

[0010] The intermittent air guiding mechanism includes a limit ring member, an air leakage rotating member, and an intermittent air guiding assembly. The limit ring member is arranged on the waste gas recovery and treatment pool and communicated with it. An air leakage port is provided on the limit ring member.

[0011] The air leakage rotating member is rotatably connected in the limit ring member. An accommodation cavity is arranged in the air leakage rotating member, and an air outlet corresponding to the air leakage port is provided on the side wall of the accommodation cavity.

[0012] The intermittent air guiding assembly is arranged in the accommodation cavity, and its upper end is connected to the air guiding pipe.

[0013] Preferably, the intermittent air guiding assembly includes a stator, a main pipe, and a plurality of branch pipes.

[0014] The stator is arranged in the accommodation cavity and fits against its side wall. A plurality of air gathering grooves arranged in a circular array are recessed on the side wall of the stator, and the air gathering grooves are communicated with the air outlet.

[0015] The main pipe is inserted into the stator and rotatably connected to the air leakage rotating member through a bearing. One end of the main pipe is connected to the air guiding pipe, and the other end is connected to a plurality of branch pipes. Each branch pipe is communicated with a corresponding air gathering groove.

[0016] Preferably, the intermittent air guiding assembly further includes a compression member.

[0017] The compression member includes a support column, a pressure spring, and a sliding orifice plate. The support column is arranged on the stator and its lower end extends into the air gathering groove. The sliding orifice plate is slidably connected to the support column.

[0018] The pressure spring is arranged on the support column between the stator and the sliding orifice plate.

[0019] Preferably, the outer end of the sliding orifice plate abuts against the inner wall of the air leakage rotating member.

[0020] Preferably, a air leakage conduit is provided on the air leakage port, and a one-way valve is provided on the air leakage conduit.

[0021] Preferably, the present invention further includes a driving mechanism. The driving mechanism includes a gear ring, a gear, and a driving motor. The output end of the driving motor is connected to the gear, the gear is meshed and connected to the gear ring, and the gear ring is sleeved on the limit ring member.

[0022] Preferably, the present invention further includes a stirring mechanism, which includes a turntable and multiple groups of stirring components. The turntable is sleeved under the air leakage rotating part, and multiple groups of the stirring components are arranged in a circular array on the turntable.

[0023] Preferably, each stirring component includes a fixing part, a connecting rod, and a blade.

[0024] Through holes are formed on the turntable, sliding columns are arranged in the through holes, the fixing part is slidably connected to the sliding columns, connecting rods are connected to both the upper and lower ends of the fixing part, and blades are arranged on the connecting rods.

[0025] Due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0026] 1. The present invention provides an automatic exhaust gas collection and treatment device for a vacuum furnace, which has a simple structure and is easy to use. An intermittent air guiding mechanism is arranged between the exhaust gas recovery and treatment pool and the vacuum furnace body, so that the exhaust gas in the vacuum furnace body can be intermittently extruded within a limited area to increase the pressure and effectively introduced into the exhaust gas recovery and treatment pool without being limited to a limited area, expanding the diffusion range of the exhaust gas in the exhaust gas recovery and treatment pool, and improving the exhaust gas collection and treatment effect and working efficiency.

[0027] 2. In the present invention, the exhaust gas is introduced into the intermittent air guiding component through the air guiding pipe and flows into the gas gathering tank. During the rotation of the air leakage rotating part in the intermittent air guiding mechanism, the air outlet on it is intermittently communicated with the air leakage port on the limit ring part, so that after the exhaust gas gathers into a group in the gas gathering tank, it can be intermittently sprayed into the exhaust gas recovery and treatment pool through the air outlet and the air leakage port in sequence. Compared with the method in the prior art that the exhaust gas directly enters the exhaust gas recovery and treatment pool, on the one hand, it can improve the fusion efficiency of the exhaust gas and the treatment liquid in the exhaust gas recovery and treatment pool, and on the other hand, it can expand the fusion range between the two, so that the exhaust gas can be dissolved in the treatment liquid within a larger range, and avoid reducing the treatment effect and working efficiency after the two are saturated in a limited area. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the present invention;

[0029] Figure 2 is Figure 1 an enlarged schematic view of part A of

[0030] Figure 3 is Figure 2 an enlarged schematic view of part B of

[0031] Figure 4 is a schematic sectional view of the intermittent air guiding mechanism;

[0032] Figure 5 is Figure 2Enlarged schematic diagram at position C.

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

[0034] 1. Exhaust gas recovery and treatment pool; 2. Vacuum furnace body; 3. Intermittent air guiding mechanism; 31. Limiting ring part; 311. Air leakage port; 32. Air leakage rotating part; 321. Accommodating cavity position; 3211. Air outlet; 33. Intermittent air guiding component; 331. Stator; 3311. Air gathering groove; 332. Main pipeline; 333. Branch pipeline; 334. Compression part; 3341. Support column; 3342. Pressure spring; 3343. Slide plate; 4. Driving mechanism; 41. Gear ring; 42. Gear; 43. Driving motor; 5. Stirring mechanism; 51. Turntable; 511. Through hole; 52. Stirring component; 521. Fixed part; 522. Connecting rod; 523. Blade; 100. Air guiding pipe; 200. Air leakage guiding pipe; 300. Check valve; 400. Slide column; 500. Bearing. Detailed implementation mode

[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 5 shown, an automatic exhaust gas collection and treatment device for a vacuum furnace includes an exhaust gas recovery and treatment pool 1, a vacuum furnace body 2, and an intermittent air guiding mechanism 3. The vacuum furnace body 2 is connected to the intermittent air guiding mechanism 3 through an air guiding pipe 100. The intermittent air guiding mechanism 3 is rotatably connected in the exhaust gas recovery and treatment pool 1. The intermittent air guiding mechanism 3 includes a limiting ring part 31, an air leakage rotating part 32, and an intermittent air guiding component 33. The limiting ring part 31 is arranged on the exhaust gas recovery and treatment pool 1 and is communicated with it. An air leakage port 311 is provided on the limiting ring part 31. The air leakage rotating part 32 is rotatably connected in the limiting ring part 31. An accommodating cavity position 321 is arranged inside the air leakage rotating part 32. An air outlet 3211 corresponding to the air leakage port 311 is provided on the side wall of the accommodating cavity position 321. The intermittent air guiding component 33 is arranged in the accommodating cavity position 321, and its upper end is connected to the air guiding pipe 100.

[0038] An intermittent air guiding mechanism 3 is arranged between the exhaust gas recovery and treatment pool 1 and the vacuum furnace body 2. The exhaust gas in the vacuum furnace body 2 is intermittently squeezed within a limited area to increase the pressure, so that it can be effectively introduced into the exhaust gas recovery and treatment pool 1 without being limited to a limited area, expanding the diffusion range of the exhaust gas in the exhaust gas recovery and treatment pool 1, and improving the exhaust gas collection and treatment effect and working efficiency.

[0039] In this embodiment, please refer to Figures 2 to 4 , the intermittent air guiding assembly 33 includes a stator 331, a main pipeline 332 and a plurality of branch pipelines 333. The stator 331 is arranged in the accommodation cavity 321 and fits against its side wall. A plurality of air collecting grooves 3311 arranged in a circular array are recessed on the side wall of the stator 331. The air collecting grooves 3311 communicate with the air outlet 3211. The main pipeline 332 is inserted into the stator 331 and is rotationally connected to the air leakage rotating part 32 through a bearing 500. One end of the main pipeline 332 is connected to the air guiding pipe 100, and the other end is connected to a plurality of branch pipelines 333. Each branch pipeline 333 communicates with a corresponding air collecting groove 3311.

[0040] In the present invention, the waste gas is introduced into the stator 331 through the air guiding pipe 100 and the main pipeline 332 and flows into the air collecting grooves 3311 through the branch pipelines 333. During the rotation of the air leakage rotating part 32 in the intermittent air guiding mechanism 3, the air outlet 3211 provided thereon intermittently communicates with the air leakage port 311 on the limiting ring part 31, so that after the waste gas aggregates into a group in the air collecting grooves 3311, it can be intermittently sprayed into the waste gas recovery and treatment pool 1 through the air outlet 3211 and the air leakage port 311 in sequence. Compared with the method in the prior art that the waste gas directly enters the waste gas recovery and treatment pool 1, on the one hand, it can improve the fusion efficiency of the waste gas and the treatment liquid in the waste gas recovery and treatment pool 1, and on the other hand, it can expand the fusion range between the two, so that the waste gas can be dissolved in the treatment liquid within a larger range, and avoid reducing the treatment effect and working efficiency after the two are saturated in a limited area.

[0041] In this embodiment, the intermittent air guiding assembly 33 further includes a compression member 334. The compression member 334 includes a support column 3341, a pressure spring 3342 and a sliding orifice plate 3343. The support column 3341 is arranged on the stator 331 and its lower end extends into the air collecting groove 3311. The sliding orifice plate 3343 is slidably connected to the support column 3341. A pressure spring 3342 is arranged on the support column 3341 between the stator 331 and the sliding orifice plate 3343; specifically, the sliding orifice plate 3343 matches the size of the air collecting groove 3311 to better control the accommodation size of the air collecting groove 3311; the setting of the intermittent air guiding assembly 33 can better extrude the waste gas introduced into the air collecting groove 3311 to increase the pressure, so as to facilitate the waste gas to be sprayed into the waste gas recovery and treatment pool 1 from the air leakage port 311 with a greater force.

[0042] During specific operation, the waste gas is introduced into the gas collecting tank 3311. During the process of pushing the sliding orifice plate 3343 upward, the pressure spring 3342 can also continuously squeeze the waste gas through the orifice plate 3343. When the air release rotating part 32 rotates to a state where the air outlet 3211 is connected to the air release port 311, the waste gas is ejected from the air release port 311 with a greater force into the waste gas recovery and treatment pool 1, thereby achieving an expanded fusion range between the waste gas and the treatment liquid, enabling the waste gas to dissolve in the treatment liquid within a larger range.

[0043] Specifically, as Figure 3 shown, the outer end of the sliding orifice plate 3343 abuts against the inner wall of the air release rotating part 32; at the same time, sealing cushions (not shown in the figure) can be provided on both the outer and inner sides of the sliding orifice plate 3343 to ensure the sealing effect of the sliding orifice plate 3343 on the gas collecting tank 3311 and prevent leakage when the sliding orifice plate 3343 controls and squeezes the waste gas in the gas collecting tank 3311; as Figure 2 shown, an air release conduit 200 is provided on the air release port 311, and a one-way valve 300 is provided on the air release conduit 200; the one-way valve 300 can prevent the waste gas and the treatment liquid 1 from flowing back into the gas collecting tank 3311.

[0044] In this embodiment, the device further includes a driving mechanism 4. The driving mechanism 4 includes a gear ring 41, a gear 42, and a driving motor 43. The output end of the driving motor 43 is connected to the gear 42, the gear 42 is meshed with the gear ring 41, and the gear ring 41 is sleeved on the limiting ring part 31; the driving mechanism 4 plays a role of providing a power source for the air release rotating part 32; as Figure 4 shown, when the driving motor 43 rotates, it drives the gear ring 41 and the gear 42 to rotate, thereby driving the air release rotating part 32 to rotate. During the rotation of the air release rotating part 32, the air outlet 3211 is intermittently connected to the gas collecting tank 3311 to introduce the waste gas into the waste gas recovery and treatment pool 1.

[0045] In this embodiment, please refer to Figure 5 , the device further includes a stirring mechanism 5. The stirring mechanism 5 includes a turntable 51 and multiple groups of stirring components 52. The turntable 51 is sleeved below the air release rotating part 32, and multiple groups of stirring components 52 are arranged in a circular array on the turntable 51.

[0046] Specifically, the stirring component 52 includes a fixing part 521, a connecting rod 522, and a blade 523. Through holes 511 are formed on the turntable 51, sliding columns 400 are provided in the through holes 511, the fixing part 521 is slidably connected to the sliding columns 400, connecting rods 522 are connected to both the upper and lower ends of the fixing part 521, and blades 523 are provided on the connecting rods 522.

[0047] The stirring mechanism 5 can rotate around the area where the waste gas is injected into the waste gas recovery and treatment pool 1 and merges with the treatment liquid, playing a role in stirring and mixing. It can accelerate the diffusion of the waste gas to a wider range, thereby better improving and expanding the fusion range between the waste gas and the treatment liquid, enabling the waste gas to dissolve in the treatment liquid within a larger range, and enhancing the waste gas collection and treatment effect and work efficiency. During specific operation, when the driving motor 43 drives the air leakage rotating part 32 to rotate, the rotating disk 51 is driven to rotate, thereby driving the stirring assembly 52 to rotate. During the rotation of the stirring assembly 52, the blades 523 are used to continuously stir the waste gas and the treatment liquid that are merging with each other, and can make the two spread and extend faster and more widely to a wider area, preventing the reduction of the waste gas treatment effect and work efficiency due to saturation in a limited area.

[0048] The working principle of the present invention:

[0049] The present invention provides an automatic waste gas collection and treatment device for a vacuum furnace. During specific operation, the waste gas is introduced into the stator 331 through the air guide pipe 100 and the main pipe 332 and flows through the branch pipe 333 to the gas gathering groove 3311. The sliding orifice plate 3343 continuously squeezes the waste gas introduced into the gas gathering groove 3311 by the action of the pressure spring 3342 to increase the pressure, prompting the waste gas to gather into a mass in the gas gathering groove 3311. Then, when the air leakage rotating part 32 rotates to a state where the air outlet 3211 is connected to the air leakage port 311, the waste gas is sprayed from the air leakage port 311 into the waste gas recovery and treatment pool 1 with a greater force to merge with the treatment liquid to achieve its collection and treatment.

[0050] During the above process, when the driving motor 43 drives the air leakage rotating part 32 to rotate, the rotating disk 51 is driven to rotate, thereby driving the stirring assembly 52 to rotate. During the rotation of the stirring assembly 52, the blades 523 are used to continuously stir the waste gas and the treatment liquid that are merging with each other, and can make the two spread and extend faster and more widely to a wider area, preventing the reduction of the waste gas treatment effect and work efficiency due to saturation in a limited area.

[0051] Compared with the prior art, an intermittent air guiding mechanism 3 is provided between the waste gas recovery and treatment pool 1 and the vacuum furnace body 2. The waste gas in the vacuum furnace body 2 is intermittently squeezed within a limited area (the gas gathering groove 3311 mentioned above) to increase the pressure and can be effectively introduced into the waste gas recovery and treatment pool 1 without being limited to a limited area. On the one hand, it can improve the fusion efficiency of the waste gas and the treatment liquid in the waste gas recovery and treatment pool 1, and on the other hand, it can expand the fusion range between the two, enabling the waste gas to dissolve in the treatment liquid within a larger range, and avoiding the reduction of the fusion effect and work efficiency due to saturation in a limited area. By using a unique structural setting and treatment method, the waste gas collection and treatment effect and work efficiency are improved.

[0052] The above description is a detailed description of the preferred and feasible embodiments of the present invention. However, the embodiments are not intended to limit the scope of the patent application of the present invention. Any equivalent changes or modifications made under the technical spirit disclosed by the present invention shall fall within the scope of the patent covered by the present invention.

Claims

1. An automatic waste gas collection and treatment device for a vacuum furnace, characterized in that: It comprises a waste gas recovery and treatment pool (1), a vacuum furnace body (2) and an intermittent gas guide mechanism (3). The vacuum furnace body (2) is connected to the intermittent air guide mechanism (3) via an air guide pipe (100); the intermittent air guide mechanism (3) is rotatably connected in the waste gas recovery and treatment pool (1). The intermittent air guide mechanism (3) comprises a limiting ring (31), an air leakage rotating member (32) and an intermittent air guide assembly (33); the limiting ring (31) is arranged on the waste gas recovery and treatment pool (1) and is in communication with the waste gas recovery and treatment pool (1); the limiting ring (31) is provided with an air leakage port (311); The air-release rotating member (32) is rotatably connected to the limiting ring member (31), and a receiving cavity (321) is provided in the air-release rotating member (32), and a side wall of the receiving cavity (321) is provided with an air outlet (3211) corresponding to the air-release port (311). The intermittent air guide component (33) is arranged in the accommodating cavity (321), and the upper end thereof is connected to the air guide pipe (100).

2. The automatic waste gas collection and treatment device for a vacuum furnace according to claim 1, characterized in that: The intermittent air guide assembly (33) comprises a stator (331), a main pipeline (332) and a plurality of branch pipelines (333). The stator (331) is arranged in the accommodating cavity (321) and is in contact with the side wall thereof. The side wall of the stator (331) is concavely provided with a plurality of gas gathering grooves (3311) arranged in a circular array. The gas gathering grooves (3311) are connected to the gas outlet (3211). The main pipe (332) is inserted into the stator (331) and is rotatably connected to the air leakage rotating part (32) through a bearing (500), and one end of the main pipe is connected to the air guide pipe (100), and the other end is connected to the plurality of branch pipes (333), and each branch pipe (333) is connected to a corresponding one of the air gathering grooves (3311).

3. The automatic waste gas collection and treatment device for a vacuum furnace according to claim 2, characterized in that: The intermittent air guide assembly (33) further includes a compression member (334), The compression member (334) comprises a support column (3341), a pressure spring (3342) and a sliding plate (3343); the support column (3341) is arranged on the stator (331) and its lower end extends into the gas gathering groove (3311); the sliding plate (3343) is slidably connected to the support column (3341). The pressure spring (3342) is provided on the support column (3341) between the stator (331) and the slide plate (3343).

4. The automatic waste gas collection and treatment device for a vacuum furnace according to claim 3, characterized in that: The outer end of the sliding plate (3343) abuts against the inner wall of the air-deflating rotating member (32).

5. The automatic waste gas collection and treatment device for a vacuum furnace according to claim 1, characterized in that: The air leakage port (311) is provided with an air leakage conduit (200), and the air leakage conduit (200) is provided with a one-way valve (300).

6. The automatic waste gas collection and treatment device for a vacuum furnace according to claim 1, characterized in that: The invention also comprises a driving mechanism (4), wherein the driving mechanism (4) comprises a ring gear (41), a gear (42) and a driving motor (43), wherein the output end of the driving motor (43) is connected to the gear (42), the gear (42) is meshingly connected to the ring gear (41), and the ring gear (41) is sleeved on the limiting ring (31).

7. The automatic waste gas collection and treatment device for a vacuum furnace according to claim 1, characterized in that: It also comprises a stirring mechanism (5), the stirring mechanism (5) comprising a rotating disk (51) and a plurality of stirring components (52), the rotating disk (51) being sleeved below the air-deflating rotating member (32), and the plurality of stirring components (52) being arranged on the rotating disk (51) in a circular array.

8. The automatic waste gas collection and treatment device for a vacuum furnace according to claim 7, characterized in that: The stirring assembly (52) includes a fixing member (521), a connecting rod (522) and blades (523). The rotating disk (51) is provided with a through hole (511), a sliding column (400) is provided in the through hole (511), the fixing member (521) is slidably connected to the sliding column (400), the upper and lower ends of the fixing member (521) are connected to the connecting rod (522), and the connecting rod (522) is provided with the blade (523).

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