Waste gas pollution-free treatment device for vacuum sintering furnace

Abstract

The invention relates to the technical field of vacuum sintering furnaces, in particular to a waste gas pollution-free treatment device for a vacuum sintering furnace. Comprising a vacuum sintering furnace, a spray tower is arranged on one side of the vacuum sintering furnace, a vacuum pump is fixedly communicated with the top of the vacuum sintering furnace, a waste gas pipe is connected between the vacuum pump and the spray tower, a discharge pipe is arranged on the top of the spray tower, a water inlet pipe is arranged above the spray tower, and a blow-off pipe is arranged at the bottom of the side wall of the spray tower. The device further comprises a heat conduction mechanism and a scraping mechanism. Through the arrangement of the spray tower, three lengthy waste gas treatment lines of dust removal, oil removal and cooling are combined together, so that the effects of dust removal, oil removal and cooling of waste gas can be simultaneously realized in only one treatment device, the waste gas treatment time is greatly shortened, and the resource consumption is also greatly reduced.

Description

A pollution-free waste gas treatment device for vacuum sintering furnaces Technical Field

[0001] This invention relates to the field of vacuum sintering furnace technology, and in particular to a pollution-free waste gas treatment device for vacuum sintering furnaces. Background Technology

[0002] Vacuum sintering furnaces generate mixed flue gas containing dust particles, oil mist, and organic waste gas during operation. Currently, the industry typically employs a two-stage treatment process: simple purification and deep purification. The pretreatment stage primarily removes dust particles and most of the oil mist from the flue gas, while the remaining small amount of oil mist and waste gas then enters subsequent purification devices for harmless treatment.

[0003] Simple purification is divided into three steps: dust removal, oil removal, and cooling. Each of these three steps requires a separate treatment device, which makes the purification process for exhaust gas lengthy.

[0004] In addition, because oil mist has strong adhesion, it is very easy to adhere to the oil removal device. As the equipment runs for longer, the adhered oil mist will continue to accumulate. This not only reduces the oil removal effect of the oil removal device, but also easily leads to poor operation of the device and increased energy consumption. It also increases the difficulty of subsequent maintenance and cleaning, and cannot meet the long-term stable and efficient exhaust gas treatment requirements of the vacuum sintering furnace. Summary of the Invention

[0005] In order to overcome the shortcomings mentioned in the background art, the present invention provides a pollution-free waste gas treatment device for vacuum sintering furnaces.

[0006] The technical solution of the present invention is: a pollution-free waste gas treatment device for a vacuum sintering furnace, comprising a vacuum sintering furnace, a spray tower arranged on one side of the vacuum sintering furnace, a vacuum pump fixedly connected to the top of the vacuum sintering furnace, a waste gas pipe connected between the vacuum pump and the spray tower, a discharge pipe arranged at the top of the spray tower, a water inlet pipe arranged above the spray tower, a sewage discharge pipe arranged at the bottom of the side wall of the spray tower, and further comprising a heat conduction mechanism and a scraping mechanism. The heat conduction mechanism is installed on the waste gas pipe, and the heat conduction mechanism includes a gas collecting cylinder. The gas collecting cylinder is fixedly connected to the outer wall of the waste gas pipe. The inside of the gas collecting cylinder is filled with thermally expanding gas. The waste gas pipe can transfer heat to the gas collecting cylinder, and the gas collecting cylinder can transfer heat to the thermally expanding gas. A scraping mechanism is installed inside the spray tower. The scraping mechanism includes a rectangular scraper. The rectangular scraper is slidably connected to the inner wall of the spray tower. The rectangular scraper can scrape off the oil stains attached to the inner wall of the spray tower.

[0007] Preferably, the heat conduction mechanism further includes an air outlet pipe, the bottom of the air collecting cylinder is connected to the air outlet pipe, one end of the air outlet pipe is connected to a shaped body fixed to the side wall of the spray tower, the end of the air outlet pipe located inside the shaped body is provided with a tapered tube, and an impeller is rotatably connected inside the shaped body.

[0008] Preferably, the heat conduction mechanism further includes a spiral tube, with the outer wall of the discharge pipe wrapped with the spiral tube, one end of the spiral tube communicating with the irregular body, and the other end of the spiral tube being connected to an air inlet pipe communicating with the top of the air collecting cylinder.

[0009] Preferably, the heat conduction mechanism further includes a first one-way valve and a second one-way valve, with the first one-way valve provided at the connection between the air outlet pipe and the air collecting cylinder, and the second one-way valve installed at the connection between the air collecting cylinder and the air inlet pipe.

[0010] Preferably, the heat conduction mechanism further includes a first rotating shaft, which is fixedly connected to one side of the impeller. One end of the first rotating shaft rotatably extends through to the outside of the irregular body and is fixedly connected to a first bevel gear. A second bevel gear meshes with the top of the first bevel gear. A second rotating shaft is fixedly connected to the top of the second bevel gear. A connecting block fixedly connected to the side wall of the spray tower is rotatably connected to the outer wall of the second rotating shaft. A transmission assembly is installed on the top of the second rotating shaft. A water storage pipe is provided below the water inlet pipe. A rotating joint is connected between the water inlet pipe and the water storage pipe. The water storage pipe is rotatably connected to the spray tower through a bearing. The water storage pipe is connected to the transmission assembly. A spray nozzle is fixedly connected to the bottom of the water storage pipe.

[0011] Preferably, the scraping mechanism further includes a reciprocating lead screw, which is fixedly connected to the bottom of the nozzle. A lead screw and nut assembly is threaded onto the outer wall of the reciprocating lead screw, and a plurality of connecting rods are fixedly connected to the outer wall of the lead screw and nut assembly. All of the connecting rods are fixedly connected to the same rectangular scraper.

[0012] Preferably, the system also includes a dust removal mechanism, which includes a connecting frame, a waste tray slidably connected to the side wall of the spray tower, a base fixedly connected to the bottom of the spray tower, a connecting frame fixedly connected to the side of the base away from the waste tray, a cylinder mounted on the top of the connecting frame, the output end of the cylinder slidingly penetrating into the interior of the spray tower, a rotating body fixedly connected to the output end of the cylinder, a connecting body rotatably connected to one side of the rotating body, a shovel fixedly connected to one side of the connecting body, a filter plate slidably connected to the bottom of the shovel, and the filter plate being detachably slidably connected to the spray tower.

[0013] Preferably, the dust removal mechanism further includes a shielding body, with the shielding body fixedly connected to the side of the shovel near the rotating body, and the shielding body being slidably connected to the outer circumferential wall of the rotating body.

[0014] Preferably, the dust removal mechanism further includes crescent plates, with crescent plates symmetrically fixed to one side of the shovel near the rotating body. The tops of both crescent plates are fixed to the shielding body, and the opposite sides of the two crescent plates are slidably connected to both ends of the rotating body.

[0015] Preferably, the filter plate has a gap between the side near the waste tray and the interior of the spray tower.

[0016] The beneficial effects of this invention are:

[0017] 1. This invention combines the three lengthy waste gas treatment lines of dust removal, oil removal, and cooling into one by setting up a spray tower. This allows the waste gas to achieve the effects of dust removal, oil removal, and cooling simultaneously in a single treatment device, which greatly reduces the waste gas treatment time and resource consumption.

[0018] 2. By setting a rectangular scraper, the present invention enables the nozzle to cooperate with the heat conduction mechanism when spraying exhaust gas. This allows the spray tower to maintain its own cleanliness while treating exhaust gas for dust removal, oil removal and cooling, thus avoiding the situation where the oil removal device has a poor oil removal effect due to excessive oil mist accumulation.

[0019] 3. This invention utilizes the temperature of the exhaust gas through the heat conduction mechanism. When the exhaust gas temperature is high, the thermally expanding gas absorbs the heat and is ejected from the conical tube under high pressure, causing the impeller to rotate. This, in turn, causes the rectangular scraper to scrape the inner wall of the spray tower. When the exhaust gas temperature decreases, the low-temperature exhaust gas can cool the thermally expanding gas in the spiral tube at the discharge pipe, allowing the thermally expanding gas to return to the gas collecting cylinder. This continuous circulation of the thermally expanding gas allows the rectangular scraper to continuously perform scraping work. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the spray tower of the present invention; Figure 3 is a schematic diagram of the structure of the heat conduction mechanism of the present invention; Figure 4 is a schematic diagram of the disassembled structure of the heat conduction mechanism of the present invention; Figure 5 is an enlarged view of point A in Figure 4 of the present invention; Figure 6 is a schematic diagram of the structure of the scraping mechanism of the present invention; Figure 7 is a schematic diagram of the structure of the dust removal mechanism of the present invention; Figure 8 is a schematic diagram of the structure of the shovel of the present invention; Figure 9 is a cross-sectional view of the rotating body of the present invention.

[0021] In the attached diagram, the following are the reference numerals: 1-vacuum sintering furnace, 2-vacuum pump, 3-exhaust gas pipe, 4-gas collecting cylinder, 401-exhaust pipe, 4011-first one-way valve, 402-irregular shape, 403-conical tube, 404-impeller, 405-spiral tube, 406-inlet pipe, 4061-second one-way valve, 407-first rotating shaft, 408-first bevel gear, 409-second bevel gear, 410-second rotating shaft, 411-transmission assembly, 412-water storage pipe, 413-... 5-Sprayer head, 5-Spray tower, 501-Connecting block, 502-Base, 503-Waste tray, 504-Filter plate, 505-Sewage pipe, 6-Discharge pipe, 7-Water inlet pipe, 701-Rotary joint, 801-Reciprocating screw, 802-Screw nut pair, 803-Connecting rod, 804-Rectangular scraper, 901-Connecting frame, 902-Cylinder, 903-Rotating body, 904-Connecting body, 905-Shovel, 906-Shielding body, 907-Crescent plate. Detailed Implementation

[0022] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] A pollution-free waste gas treatment device for a vacuum sintering furnace, as shown in Figures 1-9, includes a vacuum sintering furnace 1, a spray tower 5 installed on one side of the vacuum sintering furnace 1, a vacuum pump 2 fixedly connected to the top of the vacuum sintering furnace 1, a waste gas pipe 3 connected between the vacuum pump 2 and the spray tower 5, a discharge pipe 6 installed at the top of the spray tower 5, a water inlet pipe 7 installed above the spray tower 5, and a sewage discharge pipe 505 installed at the bottom of the side wall of the spray tower 5. It also includes a heat conduction mechanism and a scraping mechanism. The waste gas pipe 3 is equipped with... The system includes a heat transfer mechanism, which consists of a gas collecting cylinder 4. The gas collecting cylinder 4 is fixed to the outer wall of the exhaust pipe 3. The gas collecting cylinder 4 is filled with thermally expanding gas. The exhaust pipe 3 can transfer heat to the gas collecting cylinder 4, and the gas collecting cylinder 4 can transfer heat to the thermally expanding gas. The spray tower 5 is equipped with a scraping mechanism, which includes a rectangular scraper 804. The rectangular scraper 804 is slidably connected to the inner wall of the spray tower 5. The rectangular scraper 804 can scrape off the oil stains adhering to the inner wall of the spray tower 5.

[0024] The heat transfer mechanism also includes an air outlet pipe 401. The bottom of the air collecting cylinder 4 is connected to the air outlet pipe 401. One end of the air outlet pipe 401 is connected to a shaped body 402 fixed to the side wall of the spray tower 5. A tapered pipe 403 is provided at one end of the air outlet pipe 401 inside the shaped body 402. An impeller 404 is rotatably connected inside the shaped body 402.

[0025] The heat conduction mechanism also includes a spiral tube 405. The outer wall of the discharge pipe 6 is wrapped with the spiral tube 405. One end of the spiral tube 405 is connected to the irregular body 402, and the other end of the spiral tube 405 is connected to an air inlet pipe 406 that is connected to the top of the air collecting cylinder 4.

[0026] The heat transfer mechanism also includes a first one-way valve 4011 and a second one-way valve 4061. The first one-way valve 4011 is provided at the connection between the air outlet pipe 401 and the air collecting cylinder 4, and the second one-way valve 4061 is installed at the connection between the air collecting cylinder 4 and the air inlet pipe 406.

[0027] The heat transfer mechanism also includes a first rotating shaft 407. The first rotating shaft 407 is fixedly connected to one side of the impeller 404. One end of the first rotating shaft 407 rotatably extends through to the outside of the irregular body 402 and is fixedly connected to a first bevel gear 408. A second bevel gear 409 meshes with the top of the first bevel gear 408. A second rotating shaft 410 is fixedly connected to the top of the second bevel gear 409. A connecting block 501, which is fixedly connected to the side wall of the spray tower 5, is rotatably connected to the outer wall of the second rotating shaft 410. A transmission mechanism is installed on the top of the second rotating shaft 410. Component 411, a water storage pipe 412 is provided below the water inlet pipe 7, a rotating joint 701 is connected between the water inlet pipe 7 and the water storage pipe 412, the water storage pipe 412 is rotatably connected to the spray tower 5 through a bearing, the water storage pipe 412 is connected to the transmission component 411, the transmission component 411 includes two transmission wheels and a transmission belt, the two transmission wheels are respectively fixed to the second rotating shaft 410 and the water storage pipe 412, the transmission belt is connected to the two transmission wheels, and a spray head 413 is fixed to the bottom of the water storage pipe 412.

[0028] The scraping mechanism also includes a reciprocating lead screw 801. The bottom of the nozzle 413 is fixedly connected to the reciprocating lead screw 801. The outer wall of the reciprocating lead screw 801 is threadedly connected to a lead screw nut pair 802. Several connecting rods 803 are fixedly connected to the outer wall of the lead screw nut pair 802. All of the several connecting rods 803 are fixedly connected to the same rectangular scraper 804.

[0029] It also includes a dust removal mechanism, which includes a connecting frame 901. A waste tray 503 is slidably connected to the side wall of the spray tower 5. A base 502 is fixedly connected to the bottom of the spray tower 5. The connecting frame 901 is fixedly connected to the side of the base 502 away from the waste tray 503. A cylinder 902 is installed on the top of the connecting frame 901. The output end of the cylinder 902 slides through into the interior of the spray tower 5. A rotating body 903 is fixedly connected to the output end of the cylinder 902. A connecting body 904 is rotatably connected to one side of the rotating body 903. A shovel 905 is fixedly connected to one side of the connecting body 904. A filter plate 504 is slidably connected to the bottom of the shovel 905. The filter plate 504 is detachably slidably connected to the spray tower 5. A gap is left between the top side of the shovel 905 and the top side of the rotating body 903.

[0030] The dust removal mechanism also includes a shield 906. The shield 906 is fixedly connected to the side of the scraper 905 near the rotating body 903. The shield 906 is slidably connected to the outer circumferential wall of the rotating body 903.

[0031] The dust removal mechanism also includes a crescent plate 907. The shovel 905 is symmetrically fixed to the side of the rotating body 903 with the crescent plate 907. The top of both crescent plates 907 is fixed to the shield 906. The opposite side of the two crescent plates 907 is slidably connected to both ends of the rotating body 903.

[0032] There is a gap between the side of the filter plate 504 near the waste tray 503 and the interior of the spray tower 5.

[0033] First, connect the discharge pipe 6 to an external purification device, the inlet pipe 7 to an external water source, and the sewage pipe 505 to an external collection device. Open the furnace door of the vacuum sintering furnace 1, and after the furnace door is opened, place the alloy blank into the vacuum sintering furnace 1. Then close the furnace door of the vacuum sintering furnace 1 and start the vacuum sintering furnace 1. The interior of the vacuum sintering furnace 1 begins to heat up, and the vacuum sintering furnace 1 performs sintering treatment on the alloy blank inside (the vacuum sintering furnace 1 and the alloy blank mentioned above are both existing technologies, so the above process is also an existing process and will not be described in detail). Then start the vacuum pump 2, and at the same time, inject liquid into the inlet pipe 7 through the external water source. The liquid in the inlet pipe 7 will flow through the rotary joint 701 to the water storage pipe 412 and the nozzle 413, and be sprayed into the spray tower 5 through the nozzle 413. After the vacuum pump 2 is started, it will extract the gas in the vacuum sintering furnace 1, so that the interior of the vacuum sintering furnace 1 is in a vacuum state, thereby allowing the vacuum sintering furnace 1 to perform vacuum sintering treatment on the alloy blank inside.

[0034] During the vacuum sintering process of the alloy billet, waste gas is generated, which contains dust particles and oil mist. When the vacuum sintering furnace 1 is under vacuum, the vacuum pump 2 continues to operate, thereby extracting the waste gas from the vacuum sintering furnace 1. The waste gas extracted by the vacuum pump 2 enters the spray tower 5 through the waste gas pipe 3 for purification. When the vacuum sintering furnace 1 is performing vacuum sintering on the alloy billet, the interior of the vacuum sintering furnace 1 is at a high temperature. Therefore, the waste gas generated by the alloy billet is also at a high temperature. When the high-temperature waste gas flows through the waste gas pipe 3, it transfers heat to the gas collecting cylinder 4, causing the gas collecting cylinder 4 to heat up. After the gas collecting cylinder 4 heats up, it can transfer heat to the thermally expanding gas inside it, thereby... The thermally expanding gas expands due to heat. After expansion, the gas passes through the first one-way valve 4011 and enters the outlet pipe 401. It is then ejected from the conical pipe 403 and sprayed onto the impeller 404, causing the impeller 404 to rotate. It's important to note that because the conical pipe 403 has a conical structure, the pressure of the thermally expanding gas at that point is relatively high, resulting in a faster gas velocity. This allows the conical pipe 403 to forcefully spray the thermally expanding gas onto the impeller 404, ensuring its rotation. It's also important to note that both the outlet pipe 401 and the conical pipe 403 have relatively small diameters to ensure proper airflow. The conical tube 403 is always under high pressure. This constant high pressure directly ensures the force with which the conical tube 403 ejects the thermally expanding gas, thus ensuring that the impeller 404 can rotate continuously and the subsequent structures can operate continuously. The rotation of the impeller 404 will drive the first rotating shaft 407 to rotate synchronously. The rotation of the first rotating shaft 407 will drive the second rotating shaft 410 to rotate through the meshing of the first bevel gear 408 and the second bevel gear 409. The second rotating shaft 410 will drive the water storage pipe 412 to rotate through the transmission assembly 411. The water storage pipe 412 will drive the nozzle 413 to rotate. The rotation of the nozzle 413 can swing the sprayed liquid through centrifugal force, thereby increasing the spray range. When the exhaust gas enters the spray tower 5, it will flow upward. The liquid sprayed by the nozzle 413 can reduce dust in the exhaust gas and also wet the oil mist in the exhaust gas. The rotation of the nozzle 413 can expand the spray range, thereby covering a larger area and further increasing the dust reduction effect and the oil mist wetting effect. After the dust particles are reduced, they will fall onto the filter plate 504 and be blocked by the filter plate 504, while the liquid will be filtered out through the filter plate 504. After being wetted, the oil mist will mix with the liquid to form larger oil mixture beads. The oil mixture beads will be filtered out through the filter plate 504. The liquid and oil mixture beads filtered out by the filter plate 504 will be discharged from the drain pipe 505 into the collection device.

[0035] The exhaust gas flows upward within the spray tower 5 and eventually exits through the discharge pipe 6 into the purification device. After being sprayed, the temperature of the exhaust gas decreases, and most of the dust particles inside are removed. However, residual oil mist remains. Therefore, the exhaust gas needs further purification within the purification device. The purified exhaust gas becomes harmless and can be directly discharged into the atmosphere. During this process, dust particles and oil mist in the exhaust gas adhere to the inner wall of the spray tower 5, requiring timely cleaning of the adhered material. To treat dust particles and oil mist, a reciprocating screw 801 is installed at the bottom of the nozzle 413. This allows the nozzle 413 to rotate while spraying, driving the reciprocating screw 801 to rotate synchronously. The reciprocating screw 801, through its threaded engagement with the screw nut pair 802, drives the connecting rod 803 and the rectangular scraper 804 to move up and down reciprocally. The up and down reciprocating movement of the rectangular scraper 804 can scrape off the dust particles and oil mist adhering to the inner wall of the spray tower 5, keeping the inner wall of the spray tower 5 clean.

[0036] In the above process, the thermally expanded gas flowing into the irregular body 402 enters the spiral tube 405. However, since the thermally expanded gas is still in a high-temperature expansion state, it cannot return to the gas collecting cylinder 4 through the inlet pipe 406. Therefore, the spiral tube 405 is wound around the outer wall of the outlet pipe 6. When the cooled exhaust gas is discharged through the outlet pipe 6, the cooled exhaust gas can cool the thermally expanded gas in the spiral tube 405 through the outlet pipe 6, causing the thermally expanded gas to cool and contract. Subsequently, the cooled thermally expanded gas flows into the inlet pipe 406. Since the thermally expanded gas inside the outlet pipe 401 is in a high-temperature and expanding high-pressure state, while the thermally expanded gas inside the inlet pipe 406 is in a low-temperature and contracting low-pressure state, the high-pressure state... Thermally expanding gas flows towards the low-pressure state of thermally expanding gas. Therefore, the thermally expanding gas in the outlet pipe 401 flows towards the inlet pipe 406 and squeezes the cooled thermally expanding gas in the inlet pipe 406. This causes the cooled thermally expanding gas to flow back into the gas collecting cylinder 4 through the second one-way valve 4061 and be reheated. This allows the cooled thermally expanding gas to continuously enter the gas collecting cylinder 4. The cooled thermally expanding gas will be reheated and re-expanded in the gas collecting cylinder 4 and then re-enter the outlet pipe 401. This keeps the thermally expanding gas in a continuous circulation state, which continuously drives the impeller 404 to rotate, thereby causing the rectangular scraper 804 to move up and down reciprocally.

[0037] Simultaneously with the start of vacuum pump 2, cylinder 902 is activated. Cylinder 902 reciprocates, extending and retracting, and via rotating body 903, drives connecting body 904 and scraper 905 to reciprocate. As scraper 905 moves toward waste tray 503, it scrapes off dust particles on filter plate 504. As scraper 905 moves, dust particles are scraped off and pushed into waste tray 503. Subsequently, scraper 905 moves away from waste tray 503. When the side of scraper 905 facing rotating body 903 comes into contact with dust particles, scraper 905 is squeezed by the dust particles, thereby causing connecting body 904 to rotate upward within rotating body 903. When scraper 905 passes over dust particles, scraper 905 will rotate and reset due to its own weight, thus preventing scraper 905 from pushing dust particles to hard-to-clean corners when moving away from waste tray 503.

[0038] When the blade 905 moves, the shield 906 and the crescent plate 907 move synchronously with the blade 905. This allows the shield 906 and the crescent plate 907 to continuously block the gap between the blade 905 and the rotating body 903, thereby preventing dust particles and oil mist from entering between the blade 905 and the rotating body 903, which would prevent the blade 905 from rotating normally.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A pollution-free waste gas treatment device for a vacuum sintering furnace, comprising a vacuum sintering furnace (1), a spray tower (5) provided on one side of the vacuum sintering furnace (1), a vacuum pump (2) fixedly connected to the top of the vacuum sintering furnace (1), a waste gas pipe (3) connected between the vacuum pump (2) and the spray tower (5), a discharge pipe (6) provided at the top of the spray tower (5), a water inlet pipe (7) provided above the spray tower (5), and a sewage discharge pipe (505) provided at the bottom of the side wall of the spray tower (5), characterized in that: It also includes a heat conduction mechanism and a scraping mechanism. The heat conduction mechanism is installed on the exhaust pipe (3). The heat conduction mechanism includes a gas collecting cylinder (4). The gas collecting cylinder (4) is fixed to the outer wall of the exhaust pipe (3). The gas collecting cylinder (4) is filled with thermally expanding gas. The exhaust pipe (3) can transfer heat to the gas collecting cylinder (4), and the gas collecting cylinder (4) can transfer heat to the thermally expanding gas. The spray tower (5) is equipped with a scraping mechanism. The scraping mechanism includes a rectangular scraper (804). The rectangular scraper (804) is slidably connected to the inner wall of the spray tower (5). The rectangular scraper (804) can scrape off the oil stains attached to the inner wall of the spray tower (5).

2. The pollution-free waste gas treatment device for a vacuum sintering furnace according to claim 1, characterized in that: The heat conduction mechanism also includes an air outlet pipe (401), the bottom of the air collecting cylinder (4) is connected to the air outlet pipe (401), one end of the air outlet pipe (401) is connected to a shaped body (402) fixed to the side wall of the spray tower (5), the end of the air outlet pipe (401) located inside the shaped body (402) is provided with a conical pipe (403), and an impeller (404) is rotatably connected inside the shaped body (402).

3. The pollution-free waste gas treatment device for a vacuum sintering furnace according to claim 2, characterized in that: The heat conduction mechanism also includes a spiral tube (405), and the outer wall of the discharge pipe (6) is wrapped with a spiral tube (405). One end of the spiral tube (405) is connected to the irregular body (402), and the other end of the spiral tube (405) is connected to an air inlet pipe (406) that is connected to the top of the air collecting cylinder (4).

4. The pollution-free waste gas treatment device for a vacuum sintering furnace according to claim 3, characterized in that: The heat conduction mechanism also includes a first one-way valve (4011) and a second one-way valve (4061). The first one-way valve (4011) is provided at the connection between the air outlet pipe (401) and the air collecting cylinder (4), and the second one-way valve (4061) is installed at the connection between the air collecting cylinder (4) and the air inlet pipe (406).

5. A pollution-free waste gas treatment device for a vacuum sintering furnace according to claim 4, characterized in that: The heat transfer mechanism further includes a first rotating shaft (407), which is fixedly connected to one side of the impeller (404). One end of the first rotating shaft (407) rotatably extends through the outside of the irregular body (402) and is fixedly connected to a first bevel gear (408). A second bevel gear (409) meshes with the top of the first bevel gear (408). A second rotating shaft (410) is fixedly connected to the top of the second bevel gear (409). The outer wall of the second rotating shaft (410) is rotatably connected to the spray tower. 5) A connecting block (501) is fixed to the side wall. A transmission assembly (411) is installed on the top of the second rotating shaft (410). A water storage pipe (412) is provided below the water inlet pipe (7). A rotating joint (701) is connected between the water inlet pipe (7) and the water storage pipe (412). The water storage pipe (412) is rotatably connected to the spray tower (5) through a bearing. The water storage pipe (412) is connected to the transmission assembly (411). A nozzle (413) is fixed to the bottom of the water storage pipe (412).

6. The pollution-free waste gas treatment device for a vacuum sintering furnace according to claim 5, characterized in that: The scraping mechanism also includes a reciprocating lead screw (801), which is fixedly connected to the bottom of the nozzle (413). The reciprocating lead screw (801) is threadedly connected to the outer wall of the reciprocating lead screw (801) with a lead screw nut pair (802). Several connecting rods (803) are fixedly connected to the outer wall of the lead screw nut pair (802), and several connecting rods (803) are fixedly connected to the same rectangular scraper (804).

7. A pollution-free waste gas treatment device for a vacuum sintering furnace according to claim 6, characterized in that: It also includes a dust removal mechanism, which includes a connecting frame (901), a waste tray (503) slidably connected to the side wall of the spray tower (5), a base (502) fixedly connected to the bottom of the spray tower (5), a connecting frame (901) fixedly connected to the side of the base (502) away from the waste tray (503), a cylinder (902) installed on the top of the connecting frame (901), the output end of the cylinder (902) slidably penetrating into the interior of the spray tower (5), a rotating body (903) fixedly connected to the output end of the cylinder (902), a connecting body (904) rotatably connected to one side of the rotating body (903), a shovel (905) fixedly connected to one side of the connecting body (904), a filter plate (504) slidably connected to the bottom of the shovel (905), and the filter plate (504) is detachably slidably connected to the spray tower (5).

8. A pollution-free waste gas treatment device for a vacuum sintering furnace according to claim 7, characterized in that: The dust removal mechanism also includes a shield (906), and the shield (906) is fixedly connected to the side of the shovel (905) near the rotating body (903). The shield (906) is slidably connected to the outer circumferential wall of the rotating body (903).

9. A pollution-free waste gas treatment device for a vacuum sintering furnace according to claim 8, characterized in that: The dust removal mechanism also includes a crescent plate (907). The shovel (905) is symmetrically fixed to the side of the rotating body (903) with the crescent plate (907). The top of the two crescent plates (907) is fixed to the shield (906). The opposite side of the two crescent plates (907) is slidably connected to both ends of the rotating body (903).

10. A pollution-free waste gas treatment device for a vacuum sintering furnace according to claim 9, characterized in that: The filter plate (504) has a gap between the side near the waste tray (503) and the interior of the spray tower (5).

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