A nitriding furnace waste gas treatment equipment

Abstract

The present invention belongs to the technical field of waste gas filtration, and specifically refers to a nitriding furnace waste gas treatment device, including a waste gas treatment cylinder, a bearing base, a quantitative liquid filter mechanism, a reverse thrust negative pressure mechanism, a pressure difference exhaust mechanism and a sensor action mechanism, multiple groups of the bearing base are arranged on the bottom wall of the waste gas treatment cylinder, the waste gas treatment cylinder is opened at both ends, the quantitative liquid filter mechanism is arranged on the inner wall of the bottom of the waste gas treatment cylinder, and the reverse thrust negative pressure mechanism is arranged inside the waste gas treatment cylinder. The present invention provides a nitriding furnace waste gas treatment device that can increase the solubility of the water body to the waste gas by changing the pressure of the water body so that the gas carried in the water body escapes.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas filtration, and specifically refers to a waste gas treatment device for a nitriding furnace. Background Art

[0002] The exhaust gas from the nitriding furnace mainly comes from the chemical reaction during the nitriding process and the thermal decomposition of the materials in the furnace. These exhaust gases may contain a variety of harmful components, including but not limited to nitrogen oxides (NOx), sulfur dioxide (SO2), fluorides, heavy metals, ammonia and hydrogen, etc. These exhaust gases are harmful to the environment and human health.

[0003] The existing nitriding furnace waste gas treatment equipment has the following problems:

[0004] The existing method for treating water-soluble harmful gases in exhaust gas mostly adopts the method of directly passing the exhaust gas into a water tank, and adsorbing and filtering the harmful substances in the exhaust gas through the water body. However, this method has certain disadvantages. When the exhaust gas is directly passed into the water for filtration, more bubbles will be generated in the water body, causing the exhaust gas to flow out from the water surface without being filtered by the water body. Secondly, the water body used for filtration carries gas itself, which reduces the adsorption and dissolution efficiency of the water body for the exhaust gas. Therefore, it cannot meet the existing use requirements of water filtration equipment. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a nitriding furnace waste gas treatment device which can increase the solubility of the water in the waste gas by changing the water pressure to allow the gas carried in the water to escape.

[0006] The technical scheme adopted in this scheme is as follows: A nitriding furnace waste gas treatment equipment proposed in this scheme includes a waste gas treatment cylinder, a supporting base, a quantitative liquid filter mechanism, a reverse thrust type negative pressure mechanism, a pressure difference type exhaust mechanism and a sensor type action mechanism. Multiple groups of the supporting bases are arranged on the bottom wall of the waste gas treatment cylinder. The waste gas treatment cylinder is opened at both ends. The quantitative liquid filter mechanism is arranged on the inner wall of the bottom of the waste gas treatment cylinder. The reverse thrust type negative pressure mechanism is arranged inside the waste gas treatment cylinder. The pressure difference type exhaust mechanism is arranged on the reverse thrust type negative pressure mechanism. The sensor type action mechanism is arranged on the upper wall of the waste gas treatment cylinder. The quantitative liquid filter mechanism includes a driving mechanism and a filtering mechanism. The driving mechanism is arranged on the inner wall of the bottom of the waste gas treatment cylinder, and the filtering mechanism is arranged on the bottom wall of the driving mechanism.

[0007] As a further preferred embodiment of the present invention, the driving mechanism includes a driving plate, an annular groove, an annular magnet, a magnetic port and a power electromagnet. The driving plate is slidably arranged on the inner wall of the exhaust gas treatment cylinder, the annular groove is arranged on the side wall of the driving plate, the annular groove is open at one end, the annular magnet is arranged on the inner wall of the annular groove, multiple groups of magnetic ports are arranged on the bottom wall of the driving plate, the magnetic ports are connected to the annular groove, multiple groups of power electromagnets are penetrated through the bottom wall of the exhaust gas treatment cylinder, and the power electromagnet is vertically arranged with the magnetic port; the filtering mechanism includes an exhaust gas pump, a drain pump, a drain flow valve, an inlet pump and an inlet flow valve, the exhaust gas pump, the drain pump and the inlet pump are respectively arranged on the bottom wall of the driving plate, the power ends of the exhaust gas pump, the drain pump and the inlet pump are respectively penetrated through the upper wall of the driving plate, the drain flow valve is connected and arranged on the side of the drain pump away from the driving plate, and the water inlet flow valve is connected and arranged on the side of the water inlet pump away from the driving plate.

[0008] When in use, the external water inlet telescopic pipe is connected to the water inlet flow valve, the external drain telescopic pipe is connected to the drain flow valve, and the external exhaust pipe is connected to the exhaust pump. Harmful components in the exhaust gas are filtered by water, and the water is pumped to the upper wall of the driving plate through the water inlet pump. The water inlet flow valve records the amount of water pumped into the upper wall of the driving plate. Subsequently, the exhaust pump draws the exhaust gas into the water, so that the water-soluble harmful gases in the exhaust gas are adsorbed and dissolved in the water. The water that filters the exhaust gas is discharged under the action of the drain pump, and the drain flow valve records the amount of water discharged by the drain pump. When the discharged water recorded by the drain flow valve is consistent with the flow of the incoming water, the drain pump stops the pumping operation, and then the water inlet pump pumps water into the upper wall of the driving plate again to purify the exhaust gas.

[0009] Preferably, the reverse thrust type negative pressure mechanism includes a pressure plate, an anti-suction spring, a reverse thrust electromagnet, a decompression magnet and an air suction gas pressure sensor. The pressure plate is slidably arranged on the inner wall of the exhaust gas treatment cylinder above the driving plate, the anti-suction spring is arranged between the pressure plate and the inner wall of the top of the exhaust gas treatment cylinder, the reverse thrust electromagnet is arranged on the upper wall of the driving plate, the decompression magnet is arranged on the bottom wall of the pressure plate, the reverse thrust electromagnet and the decompression magnet are arranged opposite to each other, and the air suction gas pressure sensor is arranged on the bottom wall of the pressure plate.

[0010] When in use, in the initial state, the anti-suction spring is shortened, the power electromagnet is energized to generate magnetism, the power electromagnet and the annular magnet are set with the same poles, the power electromagnet is fixed to the bottom wall of the exhaust gas treatment tube, and the annular magnet is pushed by repulsion, and the annular magnet drives the driving plate to slide along the inner wall of the exhaust gas treatment tube close to the pressure plate, and the distance between the driving plate and the pressure plate is shortened, and then the water inlet pump draws water into the space formed between the pressure plate and the driving plate, and then the magnetic pole of the power electromagnet changes, and the power electromagnet and the annular magnet are set with different poles, and the power electromagnet is fixed to the bottom wall of the exhaust gas treatment tube and absorbs the annular magnet by magnetic force, and the annular magnet drives the driving plate to slide along the inner wall of the exhaust gas treatment tube and descend in height, and when the driving plate descends in height, the space formed between the pressure plate and the driving plate becomes larger, and the air pressure inside the space between the pressure plate and the driving plate decreases, and the pressure plate is formed by the anti-suction spring. The height of the filter is improved by sliding along the inner wall of the exhaust gas treatment tube. At this time, the reverse thrust electromagnet is energized to generate magnetism. The reverse thrust electromagnet and the decompression magnet are set with the same pole. The reverse thrust electromagnet is fixed on the upper wall of the driving plate and pushes the decompression magnet through repulsion, so that the decompression magnet remains in place, thereby making the space formed between the driving plate and the pressure plate in a negative pressure state, reducing the surface tension of the water body, causing the gas in the water body to escape, reducing the dissolved gas in the water, and indirectly improving the filtration efficiency of water for exhaust gas. As the height of the driving plate continues to decrease, the distance between the reverse thrust electromagnet and the decompression magnet increases, and the magnetic field strength between the reverse thrust electromagnet and the decompression magnet weakens. The pressure plate slowly approaches the driving plate under the suction generated by the lowering height of the driving plate, thereby reducing the load pressure on the exhaust gas treatment tube, and the suction gas pressure sensor monitors the pressure value between the driving plate and the pressure plate in real time.

[0011] Specifically, the pressure differential type exhaust mechanism includes a pressure differential cylinder, a vacuum pump, an evacuated gas pressure sensor, an electric valve, a limit push rod and a limit push plate. The pressure differential cylinder is slidably arranged at the top opening of the exhaust gas treatment cylinder, the vacuum pump is arranged on the upper wall of the pressure differential cylinder, the power end of the vacuum pump is penetrated and arranged inside the pressure differential cylinder, the evacuated gas pressure sensor is arranged on the upper wall of the pressure differential cylinder on one side of the vacuum pump, the detection end of the evacuated gas pressure sensor is penetrated and arranged inside the pressure differential cylinder, multiple groups of the electric valves are connected and arranged between the pressure differential cylinder and the pressure plate, the limit push rod penetrates the pressure plate, the pressure differential cylinder is arranged on the upper wall of the driving plate, the limit push plate is arranged on the side of the limit push rod away from the driving plate, and the limit push plate is arranged inside the pressure differential cylinder.

[0012] When in use, the vacuum pump draws the air inside the pressure differential cylinder through the power end through the air pressure value between the driving plate and the pressure plate fed back by the air pressure sensor, and the air pressure sensor detects the gas pressure value inside the pressure differential cylinder. When the gas pressure value inside the pressure differential cylinder detected by the air pressure sensor is lower than the gas pressure value inside the space between the driving plate and the pressure plate, the vacuum pump stops drawing the air inside the pressure differential cylinder, the electric valve opens, and the space inside the pressure differential cylinder and the exhaust gas treatment cylinder is connected. Since the gas pressure value between the driving plate and the annular magnet is higher than the gas pressure value inside the pressure differential cylinder, the gas escaping from the clean water body flows into the pressure differential cylinder through the electric valve, thereby completing the discharge of the gas contained in the clean water body, which helps to improve the solubility of the water body in harmful gases in the exhaust gas.

[0013] Among them, the sensing type action mechanism includes a sensing groove, a laser emitter, a laser receiver and a conduction port. Multiple groups of the sensing grooves are arranged on the upper wall of the exhaust gas treatment cylinder outside the pressure differential cylinder. The pressure differential cylinder is set through. The laser emitter is arranged on the side of the sensing groove away from the pressure differential cylinder. Multiple groups of the laser receivers are arranged on the top side wall, middle side wall and bottom side wall of the pressure differential cylinder from top to bottom. The conduction port is arranged on the side of the sensing groove away from the laser emitter.

[0014] When in use, the driving plate drives the limit push plate to fit the top wall of the pressure differential cylinder through the limit push rod when the driving plate rises. The driving plate drives the laser receiver set in the middle of the pressure differential cylinder to the position of the conduction port under the deformation of the anti-suction spring through the limit push plate. The laser emitted by the laser transmitter is received by the laser receiver, and the driving plate stops rising. At this time, the space between the driving plate and the pressure plate is fixed. Under the metering of the water inlet flow valve, the water enters the space formed by the driving plate and the pressure plate through the water inlet pump. The driving plate descends to remove the gas in the clean water. When the driving plate passes through the suction belt When the laser receiver on the top of the dynamic pressure difference cylinder reaches the position of the conduction port, the driving plate stops descending, completing the release of the gas inside the clean water body, the electric valve is closed, the pressure difference cylinder and the exhaust gas treatment cylinder are blocked and cut off, and then the exhaust pump discharges the exhaust gas into the water body on the wall of the driving plate. The exhaust gas penetrates the water body from bottom to top, and the water absorbs and removes the water-soluble pollutants in the exhaust gas. When the exhaust gas directly enters the water body, bubbles are usually generated, causing the exhaust gas to flow out of the water body without being filtered by water, thereby reducing the effect of water filtration. At this time, the water body is continuously filled with exhaust gas. When the purified After the gas fills the space formed between the driving plate and the pressure plate, the pressure plate slides and rises along the bearing base through the deformation of the anti-absorption spring under the push of the gas, and the power electromagnet is energized to generate magnetism. The power electromagnet pushes the annular magnet through repulsion, and the annular magnet drives the driving plate to slide and rise along the inner wall of the exhaust gas treatment tube, so that the water body and the gas are squeezed against each other, increasing the pressure inside the space between the driving plate and the pressure plate. The increase in pressure will promote the gas to enter the gap between water molecules, thereby increasing the solubility of the gas in the water, so that the gas that escapes from the water body as bubbles dissolves into the water body, thereby improving The adsorption efficiency of water on exhaust gas. When the pressure plate drives the laser receiver at the bottom of the pressure difference cylinder to the position of the conduction port, the laser signal emitted by the laser transmitter is received by the laser receiver, and the exhaust pump stops filling the water with exhaust gas. The drainage pump discharges the water between the driving plate and the pressure plate through the power end. The drainage flow valve measures the amount of water drawn by the drainage pump. When the amount of water measured by the drainage flow valve is consistent with the amount of water measured by the water inlet flow valve, the drainage pump stops the extraction operation. Then the water inlet pump again transports clean water between the driving plate and the pressure plate under the measurement of the water inlet flow valve to purify the exhaust gas.

[0015] Furthermore, a controller is provided on the upper wall of the exhaust gas treatment tube.

[0016] Furthermore, the controller is electrically connected to the power electromagnet, the exhaust pump, the drainage pump, the water intake pump, the suction gas pressure sensor, the exhaust gas pressure sensor, the laser transmitter and the laser receiver respectively.

[0017] The beneficial effects achieved by adopting the above structure are as follows:

[0018] Compared with the prior art, this solution adopts a method of regulating gas pressure. By setting up a quantitative liquid filtration mechanism, a reverse-thrust negative pressure mechanism, a pressure difference exhaust mechanism and a sensor-type action mechanism, the gas carried by the clean water itself can be released before the water adsorbs and filters the exhaust gas, thereby increasing the solubility of the water body for the gas, thereby improving the water body's purification efficiency for water-soluble harmful substances in the exhaust gas. At the same time, through the combination of self-pressurization and pushing and squeezing methods, the exhaust gas that enters the water body and turns into bubbles and flows out can be adsorbed and treated, which improves the water filtration effect of the exhaust gas to a certain extent. When the purified gas is filled with After a space is formed between the driving plate and the pressure plate, the pressure plate slides and rises along the bearing base through the deformation of the anti-suction spring under the push of the gas, the power electromagnet is energized to generate magnetism, and the power electromagnet pushes the annular magnet through repulsion. The annular magnet drives the driving plate to slide and rise along the inner wall of the exhaust gas treatment tube, so that the water body and the gas are squeezed against each other, increasing the pressure inside the space between the driving plate and the pressure plate. The increase in pressure will promote the gas to enter the gaps between water molecules, thereby increasing the solubility of the gas in water, causing the gas that escapes from the water body into bubbles to dissolve into the water body, thereby improving the adsorption efficiency of water to the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0020] Figure 2 This is a bottom-up stereogram of the scheme;

[0021] Figure 3 This is a schematic diagram of the combined structure of the reverse thrust type negative pressure mechanism and the pressure difference type exhaust mechanism of this scheme;

[0022] Figure 4 This is a schematic diagram of the structure of the quantitative liquid filtration mechanism of this scheme;

[0023] Figure 5 This is a schematic diagram of the structure of the exhaust gas treatment tube of this scheme;

[0024] Figure 6 This is the main view of this scheme;

[0025] Figure 7 This is a top view of the scheme;

[0026] Figure 8 It is a cross-sectional view of the AA portion of the figure;

[0027] Fig. 9 for Figure 5 Part I shows a magnified structural view.

[0028] Among them, 1. exhaust gas treatment cylinder, 2. bearing base, 3. quantitative liquid filter mechanism, 4. driving mechanism, 5. driving plate, 6. annular groove, 7. annular magnet, 8. magnetic guide port, 9. power electromagnet, 10. filtering mechanism, 11. exhaust gas pump, 12. drainage pump, 13. drainage flow valve, 14. water inlet pump, 15. water inlet flow valve, 16. reverse thrust type negative pressure mechanism, 17. pressure plate, 18. anti-suction spring, 19. reverse thrust electromagnet, 20. decompression magnet, 21. suction gas pressure sensor, 22. differential pressure exhaust mechanism, 23. differential pressure cylinder, 24. vacuum pump, 25. evacuation gas pressure sensor, 26. electric valve, 27. sensing action mechanism, 28. sensing groove, 29. laser transmitter, 30. laser receiver, 31. conduction port, 32. controller, 33. limit push rod, 34. limit push plate.

[0029] The accompanying drawings are used to provide further understanding of the present scheme and constitute a part of the specification. Together with the embodiments of the present scheme, they are used to explain the present scheme and do not constitute a limitation on the present scheme. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the present scheme will be clearly and completely described below in conjunction with the drawings in the embodiments of the present scheme. Obviously, the described embodiments are only part of the embodiments of the present scheme, not all of the embodiments; based on the embodiments in the present scheme, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present scheme.

[0031] In the description of this scheme, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this scheme.

[0032] like Figure 1-Figure 9As shown, the present scheme proposes a nitriding furnace waste gas treatment equipment, including a waste gas treatment tube 1, a supporting base 2, a quantitative liquid filter mechanism 3, a reverse thrust type negative pressure mechanism 16, a pressure difference type exhaust mechanism 22 and a sensor type action mechanism 27, a plurality of groups of the supporting base 2 are arranged on the bottom wall of the waste gas treatment tube 1, the waste gas treatment tube 1 is opened at both ends, the quantitative liquid filter mechanism 3 is arranged on the inner wall of the bottom of the waste gas treatment tube 1, the reverse thrust type negative pressure mechanism 16 is arranged inside the waste gas treatment tube 1, the pressure difference type exhaust mechanism 22 is arranged on the reverse thrust type negative pressure mechanism 16, the sensor type action mechanism 27 is arranged on the upper wall of the waste gas treatment tube 1, the quantitative liquid filter mechanism 3 includes a driving mechanism 4 and a filtering mechanism 10, the driving mechanism 4 is arranged on the inner wall of the bottom of the waste gas treatment tube 1, and the filtering mechanism 10 is arranged on the bottom wall of the driving mechanism 4.

[0033] The driving mechanism 4 includes a driving plate 5, an annular groove 6, an annular magnet 7, a magnetic port 8 and a power electromagnet 9. The driving plate 5 is slidably arranged on the inner wall of the exhaust gas treatment tube 1, the annular groove 6 is arranged on the side wall of the driving plate 5, and the annular groove 6 is opened at one end. The annular magnet 7 is arranged on the inner wall of the annular groove 6. Multiple groups of magnetic ports 8 are arranged on the bottom wall of the driving plate 5. The magnetic ports 8 are connected to the annular groove 6. Multiple groups of power electromagnets 9 are arranged through the bottom wall of the exhaust gas treatment tube 1. The power electromagnets 9 and the magnetic ports 8 are vertically arranged. The filtering mechanism 10 includes an exhaust pump 11, a drain pump 12, a drain flow valve 13, a water inlet pump 14 and a water inlet flow valve 15. The exhaust pump 11, the drain pump 12 and the water inlet pump 14 are respectively arranged on the bottom wall of the driving plate 5. The power ends of the exhaust pump 11, the drain pump 12 and the water inlet pump 14 are respectively penetrated through the upper wall of the driving plate 5. The drain flow valve 13 is connected to the side of the drain pump 12 away from the driving plate 5, and the water inlet flow valve 15 is connected to the side of the water inlet pump 14 away from the driving plate 5.

[0034] The reverse thrust type negative pressure mechanism 16 includes a pressure plate 17, an anti-suction spring 18, a reverse thrust electromagnet 19, a decompression magnet 20 and an air suction gas pressure sensor 21. The pressure plate 17 is slidably arranged on the inner wall of the exhaust gas treatment tube 1 above the driving plate 5. The anti-suction spring 18 is arranged between the pressure plate 17 and the top inner wall of the exhaust gas treatment tube 1. The reverse thrust electromagnet 19 is arranged on the upper wall of the driving plate 5. The decompression magnet 20 is arranged on the bottom wall of the pressure plate 17. The reverse thrust electromagnet 19 and the decompression magnet 20 are arranged opposite to each other. The air suction gas pressure sensor 21 is arranged on the bottom wall of the pressure plate 17.

[0035] The pressure differential exhaust mechanism 22 includes a pressure differential cylinder 23, a vacuum pump 24, an evacuated gas pressure sensor 25, an electric valve 26, a limit push rod 33 and a limit push plate 34. The pressure differential cylinder 23 is slidably arranged at the top opening of the exhaust gas treatment cylinder 1, the vacuum pump 24 is arranged on the upper wall of the pressure differential cylinder 23, the power end of the vacuum pump 24 is penetrated and arranged inside the pressure differential cylinder 23, the evacuated gas pressure sensor 25 is arranged on the upper wall of the pressure differential cylinder 23 on one side of the vacuum pump 24, the detection end of the evacuated gas pressure sensor 25 is penetrated and arranged inside the pressure differential cylinder 23, multiple groups of the electric valves 26 are connected and arranged between the pressure differential cylinder 23 and the pressure plate 17, the limit push rod 33 penetrates the pressure plate 17, the pressure differential cylinder 23 is arranged on the upper wall of the driving plate 5, the limit push plate 34 is arranged on the side of the limit push rod 33 away from the driving plate 5, and the limit push plate 34 is arranged inside the pressure differential cylinder 23.

[0036] The sensing action mechanism 27 includes a sensing slot 28, a laser emitter 29, a laser receiver 30 and a conduction port 31. A plurality of sets of the sensing slots 28 are arranged on the upper wall of the exhaust gas treatment cylinder 1 outside the pressure differential cylinder 23. The pressure differential cylinder 23 is a through-type setting. The laser emitter 29 is arranged on the side of the sensing slot 28 away from the pressure differential cylinder 23. A plurality of sets of the laser receivers 30 are arranged on the top side wall, the middle side wall and the bottom side wall of the pressure differential cylinder 23 from top to bottom. The conduction port 31 is arranged on the side of the sensing slot 28 away from the laser emitter 29.

[0037] A controller 32 is disposed on the upper wall of the exhaust gas treatment tube 1 .

[0038] The controller 32 is electrically connected to the power electromagnet 9 , the exhaust pump 11 , the drainage pump 12 , the water intake pump 14 , the suction gas pressure sensor 21 , the exhaust gas pressure sensor 25 , the laser transmitter 29 and the laser receiver 30 , respectively.

[0039] When in use, the external water inlet telescopic pipe is connected to the water inlet flow valve 15, the external drainage telescopic pipe is connected to the drainage flow valve 13, and the external exhaust pipe is connected to the exhaust pump 11, and the water-soluble harmful components in the exhaust gas are filtered through water. In the initial state, the anti-suction spring 18 is shortened, and the laser transmitter 29 is located between the laser receiver 30 in the middle of the pressure difference cylinder 23 and the laser receiver 30 at the bottom of the pressure difference cylinder 23;

[0040] Specifically, the controller 32 controls the power electromagnet 9 to start, and the power electromagnet 9 generates magnetism when it is energized. The power electromagnet 9 and the annular magnet 7 are arranged with the same pole. The power electromagnet 9 is fixed to the bottom wall of the exhaust gas treatment tube 1 and pushes the annular magnet 7 through repulsion. The annular magnet 7 drives the driving plate 5 to slide along the inner wall of the exhaust gas treatment tube 1 close to the pressure plate 17, and the distance between the driving plate 5 and the pressure plate 17 is shortened. When the driving plate 5 rises in height, the limiting push rod 33 drives the limiting push plate 34 to fit with the top wall of the pressure difference tube 23. The driving plate 5 is pushed by the limiting push plate 34 Under the deformation of the anti-absorption spring 18, the laser receiver 30 set in the middle of the pressure difference cylinder 23 is driven to reach the position of the conduction port 31, and the controller 32 controls the laser transmitter 29 and the laser receiver 30 to start, and the laser emitted by the laser transmitter 29 is received by the laser receiver 30, and the driving plate 5 stops rising. At this time, the space between the driving plate 5 and the pressure plate 17 is in a fixed state. Under the metering of the water inlet flow valve 15, the water body enters the space formed by the driving plate 5 and the pressure plate 17 through the water inlet pump 14;

[0041] The controller 32 controls the water inlet pump 14 to start, and water is pumped to the upper wall of the driving plate 5 through the water inlet pump 14. The water inlet flow valve 15 records the amount of water pumped into the upper wall of the driving plate 5. The water inlet pump 14 pumps water into the space formed between the pressure plate 17 and the driving plate 5. Then the controller 32 controls the magnetic pole change of the power electromagnet 9. The power electromagnet 9 and the annular magnet 7 are arranged with different poles. The power electromagnet 9 is fixed to the bottom wall of the exhaust gas treatment tube 1 and absorbs the annular magnet 7 by magnetic force. The annular magnet 7 drives the driving plate 5 to slide and descend along the inner wall of the exhaust gas treatment tube 1. When the driving plate 5 is descending, the space formed between the pressure plate 17 and the driving plate 5 becomes larger, and the air pressure inside the space between the pressure plate 17 and the driving plate 5 is reduced. The pressure plate 17 slides and descends along the inner wall of the exhaust gas treatment tube 1 through the deformation of the anti-suction spring 18. At this time, the reverse thrust electromagnet 19 is energized to generate magnetism, and the reverse thrust electromagnet 19 and the reduction The pressure magnet 20 is arranged with the same pole, and the reverse thrust electromagnet 19 is fixed on the upper wall of the driving plate 5 to push the decompression magnet 20 through repulsion, so that the decompression magnet 20 remains in place, so that the space formed between the driving plate 5 and the pressure plate 17 can be in a negative pressure state, and the surface tension of the water body is reduced, so that the gas in the water body escapes, and the gas dissolved in the water is reduced, which indirectly improves the filtration efficiency of water to the exhaust gas. As the height of the driving plate 5 continues to decrease, the distance between the reverse thrust electromagnet 19 and the decompression magnet 20 increases, and the magnetic field strength between the reverse thrust electromagnet 19 and the decompression magnet 20 weakens. The pressure plate 17 slowly approaches the driving plate 5 under the suction force generated by the descending height of the driving plate 5, thereby reducing the load pressure on the exhaust gas treatment tube 1, and the limit push rod 33 supports the base 2 to control the air suction gas pressure sensor 21 to start, and the air suction gas pressure sensor 21 monitors the pressure value between the driving plate 5 and the pressure plate 17 in real time;

[0042] The controller 32 controls the vacuum pump 24 to start according to the air pressure value between the driving plate 5 and the pressure plate 17 fed back by the air suction gas pressure sensor 21. The vacuum pump 24 extracts the air inside the pressure differential cylinder 23 through the power end. The controller 32 controls the air evacuation gas pressure sensor 25 to start. The air evacuation gas pressure sensor 25 detects the gas pressure value inside the pressure differential cylinder 23. When the gas pressure value inside the pressure differential cylinder 23 detected by the air evacuation gas pressure sensor 25 is less than the gas pressure value inside the space between the driving plate 5 and the pressure plate 17, the controller 32 controls the vacuum pump 24 to stop extracting the air inside the pressure differential cylinder 23. The controller 32 controls the electric valve 26 to open. Start, the pressure difference cylinder 23 is connected to the space inside the exhaust gas treatment cylinder 1. Since the gas pressure value between the driving plate 5 and the annular magnet 7 is greater than the gas pressure value inside the pressure difference cylinder 23, the gas escaping from the clean water body flows into the pressure difference cylinder 23 through the electric valve 26, and the driving plate 5 descends to remove the gas in the clean water body. When the driving plate 5 drives the laser receiver 30 on the top of the pressure difference cylinder 23 to the position of the conduction port 31 through the suction force, the driving plate 5 stops descending to complete the release of the gas inside the clean water body, and then completes the discharge of the gas contained in the clean water body, which helps to improve the solubility of the water body to the harmful gas in the exhaust gas;

[0043] Subsequently, the controller 32 controls the electric valve 26 to close, the pressure difference cylinder 23 and the exhaust gas treatment cylinder 1 are blocked and cut off, and the exhaust gas pump 11 discharges the exhaust gas into the water body on the upper wall of the driving plate 5. The controller 32 controls the exhaust gas pump 11 to start, and the exhaust gas pump 11 draws the exhaust gas into the water. The exhaust gas passes through the water body from bottom to top, so that the water-soluble harmful gases in the exhaust gas are adsorbed and dissolved in the water. When the exhaust gas directly enters the water body, bubbles are usually generated, causing the exhaust gas to flow out of the water body without being filtered by water, thereby reducing the effect of water filtration. At this time, the exhaust gas is continuously filled into the water body. When the purified gas fills the space between the driving plate 5 and the pressure plate 17 After the space is formed between the driving plate 5 and the pressure plate 17, the pressure plate 17 is deformed by the anti-absorption spring 18 to slide and rise along the bearing base 2 under the push of the gas, the power electromagnet 9 is energized to generate magnetism, and the power electromagnet 9 pushes the annular magnet 7 by repulsion, and the annular magnet 7 drives the driving plate 5 to slide and rise along the inner wall of the exhaust gas treatment tube 1, so that the water body and the gas are squeezed against each other, and the pressure inside the space between the driving plate 5 and the pressure plate 17 is increased. The increase in pressure will promote the gas to enter the gap between the water molecules, thereby increasing the solubility of the gas in the water, so that the gas that escapes from the water body as bubbles dissolves into the water body, thereby improving the adsorption efficiency of the water to the exhaust gas;

[0044] When the pressure plate 17 drives the laser receiver 30 at the bottom of the pressure differential cylinder 23 to reach the position of the conduction port 31, the laser signal emitted by the laser transmitter 29 is received by the laser receiver 30, the exhaust gas pump 11 stops filling the water with exhaust gas, and the controller 32 controls the drainage pump 12 to start. The drainage pump 12 discharges the water between the driving plate 5 and the pressure plate 17 through the power end, and the drainage flow valve 13 measures the amount of water drawn by the drainage pump 12. When the amount of water measured by the drainage flow valve 13 is consistent with the amount of water measured by the water inlet flow valve 15, the drainage pump 12 stops the extraction operation, and then the water inlet pump 14 again transports clean water to the space between the driving plate 5 and the pressure plate 17 under the measurement of the water inlet flow valve 15 to purify the exhaust gas; the above operation can be repeated the next time it is used.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above is a description of the present solution and its implementation methods, which is not restrictive. The drawings show only one implementation method of the present solution, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the creative purpose of the present solution, they should all fall within the protection scope of the present solution.

Claims

1. A nitriding furnace waste gas treatment device, comprising a waste gas treatment tube (1) and a bearing base (2), characterized in that: It also comprises a quantitative liquid filtration mechanism (3), a reverse thrust negative pressure mechanism (16), a differential pressure exhaust mechanism (22) and a sensor-type actuating mechanism (27); a plurality of groups of the bearing bases (2) are arranged on the bottom wall of the waste gas treatment tube (1); the waste gas treatment tube (1) is provided with openings at both ends; the quantitative liquid filtration mechanism (3) is arranged on the inner wall of the bottom of the waste gas treatment tube (1); the reverse thrust negative pressure mechanism (16) is arranged inside the waste gas treatment tube (1); the differential pressure exhaust mechanism (22) is arranged on the reverse thrust negative pressure mechanism (16); the sensor-type actuating mechanism (27) is arranged on the upper wall of the waste gas treatment tube (1); the quantitative liquid filtration mechanism (3) comprises a driving mechanism (4) and a filtering mechanism (10); the driving mechanism (4) is arranged on the inner wall of the bottom of the waste gas treatment tube (1); and the filtering mechanism (10) is arranged on the bottom wall of the driving mechanism (4); The driving mechanism (4) comprises a driving plate (5), an annular groove (6), an annular magnet (7), a magnetic guide port (8) and a power electromagnet (9); the driving plate (5) is slidably arranged on the inner wall of the exhaust gas treatment cylinder (1); the annular groove (6) is arranged on the side wall of the driving plate (5); and the annular groove (6) is arranged with an opening at one end; The annular magnet (7) is arranged on the inner wall of the annular groove (6), a plurality of groups of magnetic guide ports (8) are arranged on the bottom wall of the driving plate (5), the magnetic guide ports (8) are connected to the annular groove (6), a plurality of groups of power electromagnets (9) are arranged through the bottom wall of the exhaust gas treatment cylinder (1), and the power electromagnets (9) and the magnetic guide ports (8) are arranged vertically; The filtering mechanism (10) comprises an exhaust pump (11), a drainage pump (12), a drainage flow valve (13), a water inlet pump (14) and a water inlet flow valve (15); the exhaust pump (11), the drainage pump (12) and the water inlet pump (14) are respectively arranged on the bottom wall of the driving plate (5); The power ends of the exhaust pump (11), the drainage pump (12) and the water inlet pump (14) are respectively arranged through the upper wall of the driving plate (5); the drainage flow valve (13) is arranged in communication with the side of the drainage pump (12) away from the driving plate (5); and the water inlet flow valve (15) is arranged in communication with the side of the water inlet pump (14) away from the driving plate (5); The reverse thrust type negative pressure mechanism (16) comprises a pressure plate (17), an anti-suction spring (18), a reverse thrust electromagnet (19), a decompression magnet (20) and an air suction gas pressure sensor (21); the pressure plate (17) is slidably arranged on the inner wall of the exhaust gas treatment tube (1) above the driving plate (5); the anti-suction spring (18) is arranged between the pressure plate (17) and the inner wall of the top of the exhaust gas treatment tube (1); The reverse thrust electromagnet (19) is arranged on the upper wall of the driving plate (5), the decompression magnet (20) is arranged on the bottom wall of the pressure plate (17), the reverse thrust electromagnet (19) and the decompression magnet (20) are arranged opposite to each other, and the air suction gas pressure sensor (21) is arranged on the bottom wall of the pressure plate (17); The differential pressure exhaust mechanism (22) comprises a differential pressure cylinder (23), a vacuum pump (24), an evacuated gas pressure sensor (25), an electric valve (26), a limit push rod (33) and a limit push plate (34); the differential pressure cylinder (23) is slidably arranged at the top opening of the exhaust gas treatment cylinder (1); the vacuum pump (24) is arranged on the upper wall of the differential pressure cylinder (23); the power end of the vacuum pump (24) is arranged through the inside of the differential pressure cylinder (23); the evacuated gas pressure sensor (25) is arranged on the upper wall of the differential pressure cylinder (23) on one side of the vacuum pump (24); and the detection end of the evacuated gas pressure sensor (25) is arranged through the inside of the differential pressure cylinder (23); A plurality of groups of the electric valves (26) are connected and arranged between the pressure differential cylinder (23) and the pressure plate (17); the limit push rod (33) passes through the pressure plate (17); the pressure differential cylinder (23) is arranged on the upper wall of the drive plate (5); the limit push plate (34) is arranged on a side of the limit push rod (33) away from the drive plate (5); and the limit push plate (34) is arranged inside the pressure differential cylinder (23); The sensing action mechanism (27) comprises a sensing slot (28), a laser emitter (29), a laser receiver (30) and a conduction port (31). A plurality of sets of the sensing slots (28) are arranged on the upper wall of the exhaust gas treatment cylinder (1) outside the pressure differential cylinder (23). The pressure differential cylinder (23) is through-set. The laser emitter (29) is arranged on a side of the sensing slot (28) away from the pressure differential cylinder (23). A plurality of sets of the laser receivers (30) are arranged on the top side wall, the middle side wall and the bottom side wall of the pressure differential cylinder (23) in sequence from top to bottom. The conduction port (31) is arranged on a side of the sensing slot (28) away from the laser emitter (29).

Images