Large air volume exhaust gas treatment regenerative thermal oxidation device with self-lubricating poppet valve

Abstract

The application discloses a large-wind-volume exhaust gas treatment regenerative thermal oxidation device with self-lubricating poppet valves and relates to the technical field of exhaust gas combustion treatment. The large-wind-volume exhaust gas treatment regenerative thermal oxidation device with self-lubricating poppet valves, which comprises a shell, a combustion chamber for combusting exhaust gas in the shell, a gas collecting chamber communicated through an air duct, a regenerative chamber below the combustion chamber, regenerative materials for heat storage in the regenerative chamber and a poppet valve unit connected to the air duct for switching the flow direction of the exhaust gas, a detection assembly for detecting the friction degree between the valve rod and the valve sleeve is arranged at the poppet valve unit; a pulley is fixed to the movable rod and abuts against the valve rod in the poppet valve unit on one side; an angle sensor is fixed to one end of the movable rod and detects the rotating angle and speed of the movable rod; by continuously monitoring the change of the friction force, the lubricating oil is regularly and appropriately supplemented according to the monitoring result to reduce the direct contact and wear between the components and prolong the service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas combustion treatment, in particular to a large-wind-volume waste gas treatment regenerative thermal oxidation device with self-lubricating poppet valves. BACKGROUND

[0002] The regenerative thermal oxidation furnace (RTO) is a kind of high-efficiency organic waste gas treatment equipment. Compared with the traditional catalytic combustion and direct-fired thermal oxidation furnace (TO), it has the characteristics of high thermal efficiency (≥95%), low operation cost, and can treat large-wind-volume low-concentration waste gas. When the concentration is slightly high, it can also perform secondary waste heat recovery, greatly reducing the production and operation cost. The regenerative thermal oxidation furnace (RTO) in use usually switches the flow direction of waste gas by means of poppet valves. In use, it usually relies on mechanical bearings and intermittent lubrication. The high-frequency movement of the valve rod causes the accumulation of friction heat, sealing failure and particle intrusion, resulting in valve body jamming and life reduction. It is difficult to adapt to large-wind-volume, high-temperature and corrosive waste gas treatment conditions.

[0003] For example, the rotating regenerative thermal oxidation device disclosed in the publication No. CN112377931B reduces the amount of residual waste gas by changing the layout of the regenerative chamber and the combustion chamber. However, this layout is difficult to cope with large-wind-volume waste gas treatment conditions, and the lubrication of the poppet valve still relies on mechanical bearings and intermittent lubrication, which is prone to sealing failure and particle intrusion, resulting in valve body jamming and life reduction.

[0004] Therefore, a large-wind-volume waste gas treatment regenerative thermal oxidation device with self-lubricating poppet valves is proposed. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a large-wind-volume waste gas treatment regenerative thermal oxidation device with self-lubricating poppet valves, which solves the problems raised in the background art.

[0006] To achieve the above purpose, the present application realizes the following technical scheme: a large-wind-volume waste gas treatment regenerative thermal oxidation device with self-lubricating poppet valves, comprising a shell, a combustion chamber for burning waste gas in the shell, a gas collecting chamber connected by an air duct, a regenerative chamber below the combustion chamber, a regenerative material in the regenerative chamber for heat storage, and a poppet valve unit connected to the air duct for switching the flow direction of waste gas. A detection assembly for detecting the degree of friction between the valve rod and the valve sleeve is arranged at the poppet valve unit, and a self-lubricating assembly for determining the lubrication scheme according to the detection result is arranged. The detection assembly comprises:

[0007] A mounting block is abutted on the valve sleeve at one end, and a movable rod is mounted on the mounting block;

[0008] A pulley is fixed on the movable rod and abutted on the valve rod in the poppet valve unit at one side, and rotates with the movement of the valve rod.

[0009] An angle sensor is fixed at one end of the movable rod to detect the rotating angle and speed of the movable rod.

[0010] Preferably, the detection assembly further comprises a sliding rod fixed on the movable rod and rotating with the movable rod, a pushing block abutting against the sliding rod and moving under the extrusion of the sliding rod, and a sliding seat with one end of the side wall fixed to the pushing block to provide support for the pushing block.

[0011] Preferably, the detection assembly further comprises a sliding rail with the side wall fixed on the mounting block and sliding through the sliding seat to guide and limit the sliding seat, a measuring plate fixed at one end on the sliding seat and moving with the sliding seat, and a speed sensor fixed above the side of the sliding rail and above the measuring plate to measure the moving speed of the measuring plate.

[0012] Preferably, the detection assembly further comprises a fixed plate with one end fixed on the side wall of the mounting block and a fixed hole formed on the surface, a sliding plate sliding through the fixed plate, and a fixed block fixed in the sliding plate by a return spring and matching the size of the fixed hole.

[0013] Preferably, the self-lubricating assembly comprises a guide rail fixed on the fixed plate, an electromagnet one fixed at one end on the top of the guide rail, an electromagnet two slidingly installed on the guide rail by a support rod and magnetically matched with the electromagnet one, and a fixed sleeve fixed at one end on the support rod.

[0014] Preferably, the self-lubricating assembly further comprises an atomizing nozzle fixed in the fixed sleeve and communicated with an oil pump through an oil delivery pipe and a four-way joint, and an oil tank communicated with the oil pump to supply lubricating oil to the oil pump.

[0015] Preferably, the auxiliary assembly comprises a mounting shaft hingedly connected in the fixed sleeve by a torsion spring, and a scraper fixed on the mounting shaft.

[0016] Preferably, the auxiliary assembly further comprises a brush plate slidingly abutting against the fixed sleeve, a limiting rod with one end fixed on the brush plate and the other end slidingly passing out of the fixed sleeve, a spring with one end fixed on the limiting rod and the other end fixed on the fixed sleeve to provide elastic force for the return of the brush plate, and an air bag fixed in the brush plate and communicated with a deformation bag fixed on the fixed sleeve.

[0017] Preferably, the auxiliary assembly further comprises a pressing plate abutting against the top of the deformation bag, an extrusion rod with the side wall fixed on the side wall of the pressing plate and the other end abutting against the top of the scraper, and a guide rod with one end fixed on the fixed sleeve and the other end slidingly passing out of the pressing plate.

[0018] Preferably, the auxiliary assembly further comprises: a magnet fixed at one end of the side wall of the pressing plate; and an electromagnet three fixed at the bottom of the fixing sleeve and magnetically matched with the magnet.

[0019] The application provides a large-wind-volume exhaust gas treatment regenerative thermal oxidation device with self-lubricating poppet valves.

[0020] (1) The large-wind-volume exhaust gas treatment regenerative thermal oxidation device with self-lubricating poppet valves can ensure that the exhaust gas meets strict emission standards by completely decomposing volatile organic compounds and other harmful substances into harmless substances such as carbon dioxide and water vapor through the regenerative thermal oxidation device (RTO) for thermal oxidation treatment of the exhaust gas and by guiding the flow direction of the exhaust gas through the poppet valves, greatly reducing fuel consumption and improving overall energy utilization efficiency.

[0021] (2) The large-wind-volume exhaust gas treatment regenerative thermal oxidation device with self-lubricating poppet valves can detect problems in advance before wear or failure occurs by continuously monitoring changes in friction, effectively reduce direct contact and wear between components by regularly and appropriately supplementing lubricating oil according to monitoring results, adjust the lubrication frequency and amount according to the actual friction change situation to avoid waste and potential pollution problems caused by excessive lubrication, prevent mechanical damage caused by insufficient lubrication, reduce valve sticking caused by abnormal friction, ensure that the poppet valve can smoothly perform air flow switching tasks, maintain normal operation of the system, thereby prolonging the service life of the poppet valve and other related components, and improve the accuracy and reliability of the data by using two different detection methods to confirm the trend of changes in friction, making maintenance decisions based on these data more scientific and reasonable, and long-term recording of friction data can help analyze equipment aging patterns and predict future problems to provide a reference for developing more effective preventive maintenance strategies.

[0022] (3) The large-wind-volume exhaust gas treatment regenerative thermal oxidation device with self-lubricating poppet valves realizes "on-demand lubrication", significantly improves lubrication efficiency and economy, and the metal friction between the valve stem and the valve sleeve is the main cause of wear, seal aging, and action delay, so it is necessary to supplement the lubricating film in the early stage of wear to prevent minor scratches from evolving into serious damage, effectively reduce the mechanical wear rate, prolong the overall life of the valve, reduce RTO system downtime or switching failure caused by valve sticking and action not in place, realize "dynamic smearing" combined with the lifting action of the poppet valve, cover the entire stroke, avoid local dry grinding, and at the same time, the modular design facilitates the upgrading and reconstruction of old RTO systems, reducing the cost of upgrading and reconstruction.

[0023] (4), the large volume of exhaust gas treatment with regenerative thermal oxidation device with self-lubricating poppet valve, old lubricating oil in adsorbed dust, metal filings and other particulate matter, form similar "grinding paste" material, after cleaning and then spray lubricating oil, ensure that the new spray lubricating oil directly on the clean metal surface, form a complete, efficient lubricating film, guarantee the valve action precision and sealing performance, improve the air tightness and operation stability of RTO system.

[0024] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the present application;

[0026] Figure 2 is another view of the overall structure of the present application;

[0027] Figure 3 is the internal structure diagram of the shell of the present application;

[0028] Figure 4 is the sectional view of the air duct of the present application;

[0029] Figure 5 is the position structure diagram of the mounting seat of the present application;

[0030] Figure 6 is the side sectional view of the cover of the present application;

[0031] Figure 7 is the position structure diagram of the cylinder of the present application;

[0032] Figure 8 is the position structure diagram of the oil pump of the present application;

[0033] Figure 9 is the position structure diagram of the detection assembly of the present application;

[0034] Figure 10 is the position structure diagram of the present application Figure 9 is the enlarged view of A in the present application;

[0035] Figure 11 is the position structure diagram of the sliding plate of the present application;

[0036] Figure 12 is the position structure diagram of the support rod of the present application;

[0037] Figure 13 is the position structure diagram of the fixing sleeve of the present application;

[0038] Figure 14 Figure 3 is a position structure diagram of the electromagnet three of the present application;

[0039] Figure 15 Figure 4 is a position structure diagram of the spring of the present application.

[0040] In the figure: 1, shell; 11, gas collecting chamber; 12, air duct; 13, heat accumulating material; 2, mounting seat; 21, cover; 22, cylinder; 23, valve sleeve; 24, valve plate; 25, fixed plate; 251, mounting block; 26, sliding plate; 27, fixed block; 28, pulley; 29, movable rod; 210, sliding rod; 211, angle sensor; 212, toggle block; 213, sliding seat; 214, measuring plate; 215, sliding rail; 216, speed sensor; 3, guide rail; 31, electromagnet one; 32, electromagnet two; 33, support rod; 34, fixed sleeve; 35, scraper; 351, mounting shaft; 36, atomizing nozzle; 37, oil delivery pipe; 38, four-way pipe; 39, oil pump; 310, oil tank; 4, brush plate; 41, limiting rod; 42, spring; 43, air bag; 44, deformation bag; 45, pressing plate; 451, extrusion rod; 46, guide rod; 47, magnet; 48, electromagnet three. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0042] In the embodiments of the present application, the devices or elements impliedly referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specified precisely and specifically.

[0043] Please refer to Figures 1 to 15 The present application provides the following technical solutions:

[0044] Embodiment one: large air volume waste gas treatment regenerative thermal oxidation device with self-lubricating poppet valve, including shell 1, combustion chamber for burning waste gas in shell 1, through air duct 12 for temporary storage of waste gas for processing gas collection chamber 11, regenerator chamber below the combustion chamber, regenerator material 13 for heat storage in regenerator chamber, poppet valve unit connected to air duct 12 for switching waste gas flow direction, poppet valve unit includes: for providing switching power cylinder 22, fixedly installed on the output end of cylinder 22 for power transmission valve rod, slidingly sleeved on the outside of valve rod for improving the airtightness of valve sleeve 23, valve sleeve 23 is fixedly installed on air duct 12, side wall is fixedly installed on one end of valve rod for controlling the intake state of valve plate 24, poppet valve unit is fixedly installed on air duct 12 through mounting seat 2, and a cover 21 is slidingly placed on mounting seat 2.

[0045] In use, the waste gas to be burned is transported to the gas collection chamber 11 through the air duct 12, and then the poppet valve is controlled to open and close according to the progress of waste gas treatment in the shell 1, so that the waste gas is orderly transported from the gas collection chamber 11 to the three regenerator chambers in the shell 1, when one of the regenerator chambers has untreated waste gas passing through and entering the combustion chamber above, another regenerator chamber discharges waste gas after thermal oxidation treatment, and the last regenerator chamber is cleaned;

[0046] The heat storage material 13 in the regenerator chamber is used for heat storage, so that the waste gas is preheated by the heat storage material 13 in the regenerator chamber before entering the combustion chamber, the waste gas is more easily heated to the combustion temperature after preheating, and the energy consumption is further reduced. During the operation of the poppet valve, the valve rod is driven to move by the cylinder 22, so that the valve rod drives the valve plate 24 to move to open or close, and the valve rod is supported and limited by the valve sleeve 23 to ensure the airtightness.

[0047] Embodiment two, the technical scheme of embodiment two is different from that of embodiment one, including: the poppet valve unit is provided with a detection assembly for detecting the friction degree between the valve rod and the valve sleeve 23, the detection assembly includes: fixed plate 25, mounting block 251, sliding plate 26, fixed block 27, pulley 28, movable rod 29, angle sensor 211;

[0048] One end of the mounting block 251 is in sliding abutment on the valve sleeve 23, and a movable rod 29 is movably mounted in the mounting block 251 through a bearing, one end of the fixed plate 25 is fixedly mounted on the side wall of the mounting block 251, and a fixing hole is formed in the surface of the fixed plate 25, one end of the sliding plate 26 is slidably arranged in the fixed plate 25, and a handle is fixedly mounted on the sliding plate 26, a return spring is fixedly mounted on the side wall of the fixed block 27, the other end of the return spring is fixedly mounted in the sliding plate 26, and the fixed block 27 is matched with the fixing hole, the pulley 28 is fixedly mounted on the movable rod 29, and one side of the pulley 28 is in sliding abutment on the valve rod in the poppet valve unit, the pulley 28 can rotate with the movement of the valve rod, and one end of the angle sensor 211 is fixedly mounted on one end of the movable rod 29, the angle sensor 211 is used for detecting the rotation angle and speed of the movable rod 29, and provides a basis for determining the oil injection time and oil injection amount.

[0049] The detection assembly further comprises a sliding rod 210, a pushing block 212, a sliding seat 213, a measuring plate 214, a sliding rail 215 and a speed sensor 216.

[0050] One end of the sliding rod 210 is fixedly mounted on the movable rod 29, and the sliding rod 210 can rotate with the rotation of the movable rod 29, the side wall of the pushing block 212 is in abutment on the sliding rod 210, and the pushing block 212 can move under the extrusion of the sliding rod 210, the side wall of the sliding seat 213 is fixedly connected with one end of the pushing block 212, the sliding seat 213 provides support for the pushing block 212, the side wall of the sliding rail 215 is fixedly mounted on the mounting block 251, the sliding rail 215 is slidably arranged in the sliding seat 213, and the sliding rail 215 can guide and limit the sliding seat 213, one end of the measuring plate 214 is fixedly mounted on the sliding seat 213, and the measuring plate 214 can move with the movement of the sliding seat 213, one end of the speed sensor 216 is fixedly mounted on the side of the sliding rail 215, and the speed sensor 216 is located directly above the measuring plate 214, and the speed sensor 216 is used for measuring the moving speed of the measuring plate 214, and assisting in judging the oil injection time and oil injection amount.

[0051] In use, the fixed plate 25 is sleeved outside the valve sleeve 23, and the mounting block 251 is also abutted on the valve sleeve 23, the sliding plate 26 is pushed, the sliding plate 26 is slid out from one end of the fixed plate 25 and inserted into the other end of the fixed plate 25, under the action of the return spring, the fixed block 27 is popped out from the sliding plate 26 and clamped into the fixing hole formed in the surface of the fixed plate 25, so that the fixed plate 25 can be kept in the position shown in the figure. Figure 9

[0052] Further, an installation groove can be formed in the surface of the valve sleeve 23, and the installation groove is matched with the mounting block 251, so that the mounting block 251 can be clamped into the installation groove for a small distance, and the mounting block 251 can be better fixed at this position.​

[0053] The movable rod 29 provides support for the pulley 28, which slides against the valve rod. The contact surface between the pulley 28 and the valve rod is concave inward from both sides to match the curvature of the valve rod. In order to ensure the friction between them, a convex strip can be further arranged on the surface of the pulley 28.

[0054] After the detection assembly is installed at the valve sleeve 23, during the opening and closing process of the poppet valve, the valve rod slides in the valve sleeve 23, and the pulley 28 and the valve rod also slide against each other at the same time. Under the action of friction, the pulley 28 rotates with the expansion and contraction of the valve rod. The rotation of the pulley 28 drives the movable rod 29 to rotate, and the rotation of the movable rod 29 drives the angle sensor 211 to rotate. The rotation speed and angle of the movable rod are measured by the angle sensor 211, and the friction between the valve rod and the valve sleeve 23 is determined by the speed and the rotation angle.

[0055] If the rotation speed is slow and the angle is small, it indicates that there is more lubricating oil on the surface of the valve rod, and the friction between the pulley 28 and the valve rod is small, so it is determined that the friction between the valve rod and the valve sleeve 23 is also small. If the rotation speed is fast and the angle is large, it indicates that there is less lubricating oil on the surface of the valve rod, and the friction between the pulley 28 and the valve rod is large, so it is determined that the friction between the valve rod and the valve sleeve 23 is also large. If the rotation speed is slow and the angle is large, it indicates that the amount of lubricating oil on the surface of the valve rod is appropriate, and the friction between the pulley 28 and the valve rod is moderate, so it is determined that the friction between the valve rod and the valve sleeve 23 is also moderate.

[0056] Further, a plurality of sliding rods 210 are installed on the movable rod 29, which are driven to rotate synchronously by the rotation of the movable rod 29. When the sliding rods 210 rotate, the push block 212 moves. The sliding seat 213 is driven to move by the push block 212, and the sliding seat 213 can only move up and down linearly along the slide rail 215 through the sliding fit between the sliding seat 213 and the slide rail 215. The sliding seat 213 moves synchronously with the measuring plate 214. When one of the sliding rods 210 is separated from the push block 212, the push block 212 falls under the combined action of its own gravity, the self-weight of the sliding seat 213, and the self-weight of the measuring plate 214. The speed of the measuring plate 214 is measured by the speed sensor 216 installed above the side wall of the slide rail 215, so as to assist in determining the friction condition of the valve rod and the valve sleeve 23. A wire spring can also be installed between the sliding seat 213 and the slide rail 215 to provide stable reset force to the sliding seat 213.

[0057] By comparing the moving speed results of the measuring plate 214 measured in two adjacent times, if the measured speed presents acceleration, it indicates that the rotation speed of the movable rod 29 is continuously accelerated, indicating that the friction between the valve rod and the pulley 28 is in an increasing state, so as to determine that the friction between the valve rod and the valve sleeve 23 is also in an increasing state. If the measured speed presents deceleration, it indicates that the rotation speed of the movable rod 29 is continuously reduced, indicating that the friction between the valve rod and the pulley 28 is in a decreasing state, so as to determine that the friction between the valve rod and the valve sleeve 23 is also in a decreasing state. If the measured speed is similar, it indicates that the rotation speed of the movable rod 29 is uniform, and the friction between the pulley 28 and the valve rod is moderate, so as to determine that the friction between the valve rod and the valve sleeve 23 is also moderate.

[0058] In example three, the technical scheme of the example is different from that of example two, and the self-lubricating assembly for determining the lubrication scheme according to the detection result is arranged at the lift valve unit, and the self-lubricating assembly comprises a guide rail 3, an electromagnet 31, an electromagnet 32, a support rod 33, a fixed sleeve 34, an atomizing nozzle 36, an oil conveying pipe 37, a four-way valve 38, an oil pump 39, and an oil tank 310.

[0059] One end of the guide rail 3 is fixedly installed on the fixed plate 25, one end of the electromagnet 31 is fixedly installed on the top of the guide rail 3, one end of the electromagnet 32 is fixedly installed on the top of the support rod 33, one end of the support rod 33 is slidably installed on the guide rail 3, the electromagnet 32 and the electromagnet 31 are magnetically matched, the support rod 33 is driven to slide back and forth along the guide rail 3 through the magnetic switching between the electromagnet 32 and the electromagnet 31, the top of the fixed sleeve 34 is fixedly installed on one end of the support rod 33, the fixed sleeve 34 is composed of two halves, the two halves of the fixed sleeve 34 can be fixed by welding, bolts or the like, the sidewall of the atomizing nozzle 36 is fixedly installed in the fixed sleeve 34, the oil inlet of the atomizing nozzle 36 is communicated with an oil conveying pipe 37, one end of the oil conveying pipe 37 is communicated with the four-way valve 38, one end of the four-way valve 38 is communicated with the output end of the oil pump 39, the oil tank 310 is communicated with the oil inlet end of the oil pump 39, and the oil tank 310 can supply lubricating oil to the oil pump 39.

[0060] The self-lubricating assembly further comprises an auxiliary assembly for evenly lubricating the oil, and the auxiliary assembly comprises an installation shaft 351, a scraper 35, a brush plate 4, a limiting rod 41, a spring 42, an air bag 43, a deformation bag 44, a pressing plate 45, an extrusion rod 451, a guide rod 46, a magnet 47, and an electromagnet 48.

[0061] One end of the mounting shaft 351 is hingedly connected in the fixed sleeve 34 through a torsion spring, the scraper 35 is fixedly installed on the mounting shaft 351, the side wall of the brush plate 4 is slidingly abutted on the fixed sleeve 34, one end of the limiting rod 41 is fixedly installed on the brush plate 4, the other end of the limiting rod 41 slidingly penetrates out of the fixed sleeve 34, one end of the spring 42 is fixedly installed on the limiting rod 41, the other end of the spring 42 is fixedly installed on the fixed sleeve 34, the spring 42 is used for providing elastic force for resetting the brush plate 4, one end of the air bag 43 is fixedly installed in the brush plate 4 and is communicated with the shape change bag 44, one end of the shape change bag 44 is fixedly installed on the fixed sleeve 34, the bottom of the pressing plate 45 is abutted on the top of the shape change bag 44, the side wall of the extrusion rod 451 is fixedly installed on the side wall of the pressing plate 45, the other end of the extrusion rod 451 is slidingly abutted on the top of the scraper 35, one end of the guide rod 46 is fixedly installed on the fixed sleeve 34, the other end of the guide rod 46 slidingly penetrates out of the pressing plate 45, one end of the magnet 47 is fixedly installed on the side wall of the pressing plate 45, the bottom of the electromagnet three 48 is fixedly installed on the fixed sleeve 34, and the electromagnet three 48 is magnetically matched with the magnet 47.

[0062] In use, after the detection assembly completes the detection of the friction force, the oil pump 39 is started according to the detection result, the oil pump 39 delivers the lubricating oil in the oil tank 310 to the atomizing nozzle 36 through the four-way valve 38 and the oil delivery pipe 37 to spray the surface of the valve rod, the valve rod normally operates in extension and retraction when the lubricating oil is sprayed, at the same time of spraying the lubricating oil, the magnetism between the electromagnet one 31 and the electromagnet two 32 is switched back and forth between attraction and repulsion through the control of the control console, so that the electromagnet two 32 moves under the joint action of the magnetic attraction force and the repulsive force, and the sliding cooperation between the support rod 33 and the guide rail 3 makes the support rod 33 only slide along the guide rail 3 during movement;

[0063] At the same time, the magnetism between the electromagnet three 48 and the magnet 47 is switched to attraction, so that the magnet 47 drives the pressing plate 45 to move, the sliding cooperation between the pressing plate 45 and the guide rod 46 makes the pressing plate 45 only move linearly along the guide rod 46, the pressing plate 45 extrudes the shape change bag 44, so that the gas in the shape change bag 44 is delivered to the air bag 43, the air bag 43 expands to drive the brush plate 4 to move to the side where the valve rod is located, so that the brush plate 4 can contact the valve rod;

[0064] The support rod 33 drives the fixed sleeve 34 to move, the fixed sleeve 34 drives the limiting rod 41 to move, the limiting rod 41 drives the brush plate 4 to move, so that the brush plate 4 evenly spreads the lubricating oil sprayed by the atomizing nozzle 36, after the spreading is completed, the magnetism between the electromagnet three 48 and the magnet 47 is switched to repulsion to reset to Figure 14 The initial state shown in the figure, at the same time, the spring 42 provides the limiting rod 41 with elastic force for resetting, so that the brush plate 4 resets to the side where the fixed sleeve 34 is located, the gas in the air bag 43 flows back to the shape change bag 44, and the next use is waited;

[0065] After long-term operation, the magnetism between the electromagnet three 48 and the magnet 47 is switched to attraction before spraying the lubricating oil, so that the pressing plate 45 drives the extrusion rod 451 to move, the extrusion rod 451 pushes the scraper 35 to overturn around the installation shaft 351, so that the scraper 35 and the brush plate 4 can contact the valve rod, then the magnetism between the electromagnet one 31 and the electromagnet two 32 is switched back and forth between attraction and repulsion, so that the brush plate 4 and the scraper 35 can remove the lubricating oil with particles attached to the surface of the valve rod, and then spray out the lubricating oil, and the scraped lubricating oil can be driven into the combustion chamber by the exhaust gas flow.

[0066] In summary, the technical solutions disclosed in the above embodiments have at least the following advantages:

[0067] By continuously monitoring the change of friction, problems can be found in advance before wear or failure occurs;

[0068] According to the monitoring results, regular and appropriate replenishment of lubricating oil can effectively reduce direct contact and wear between parts;

[0069] According to the actual friction change, the lubrication frequency and amount are adjusted to avoid waste and potential pollution caused by excessive lubrication, and to prevent mechanical damage caused by insufficient lubrication;

[0070] Reduce the valve sticking phenomenon caused by abnormal friction, ensure that the poppet valve can smoothly perform the air flow switching task, maintain the normal operation of the system, and prolong the service life of the poppet valve and other related components;

[0071] The two different detection methods are used to verify the change trend of friction, improve the accuracy and reliability of the data, and make the maintenance decision based on the data more scientific and reasonable;

[0072] Long-term recording of friction data can help analyze the aging pattern of the equipment, predict possible future problems, and provide a reference for developing more effective preventive maintenance strategies;

[0073] Realize "on-demand lubrication", significantly improve the lubrication efficiency and economy;

[0074] Metal friction between the valve rod and the valve sleeve is the main reason for wear, seal aging and action delay. Timely supplement the lubricating film at the initial stage of wear to prevent minor scratches from evolving into serious damage, effectively reduce the mechanical wear rate, and prolong the overall life of the valve;

[0075] Reduce RTO system downtime or switching failure caused by valve sticking and action not in place, combined with the lifting action of the poppet valve;

[0076] Realize "dynamic smearing", cover full journey, avoid local dry grinding, and the modular design facilitates the upgrading of old RTO systems, reducing the cost of upgrading.

[0077] Meanwhile, the contents not described in detail in the specification are all the prior art known to those skilled in the art.

[0078] It should be noted that, in this paper, relational terms such as first and second are used merely to distinguish one entity or action from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or actions. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0079] Parallel: The parallel defined in this application is not limited to absolute parallel, and the definition of this parallel can be understood as substantially parallel, allowing for the influence of factors such as assembly tolerance, design tolerance, and structure flatness, which are not absolutely parallel, allowing for the existence of a small angle range of error, for example, within the assembly error range of 10 degrees, which can be understood as a parallel relationship.

[0080] Vertical: The vertical defined in this application is not limited to the relationship of absolute vertical intersection (included angle of 90 degrees), allowing for the influence of factors such as assembly tolerance, design tolerance, and structure flatness, which are not absolutely vertical intersection, allowing for the existence of a small angle range of error, for example, within the assembly error range of 80 degrees to 100 degrees, which can be understood as a vertical relationship.

[0081] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A regenerative thermal oxidation device for treating large volume exhaust gas with a self-lubricating lift valve, comprising a shell (1), a combustion chamber for burning exhaust gas located within the shell (1), a gas collection chamber (11) connected via a duct (12), a heat storage chamber located below the combustion chamber, a heat storage material (13) located within the heat storage chamber for heat storage, and a lift valve unit connected to the duct (12) for switching the direction of exhaust gas flow, characterized in that: The lifting valve unit is equipped with a detection component for detecting the degree of friction between the valve stem and the valve sleeve (23) and a self-lubricating component for determining the lubrication scheme based on the detection results. The detection component includes: The mounting block (251) abuts against the valve sleeve (23) at one end, and a movable rod (29) is mounted on it. The pulley (28) is fixed on the movable rod (29) and one side abuts against the valve stem in the lifting valve unit, rotating as the valve stem moves; An angle sensor (211) is fixed to one end of the movable rod (29) to detect the rotation angle and speed of the movable rod (29); The fixing plate (25) is fixed at one end to the side wall of the mounting block (251), and a fixing hole is provided on its surface; The sliding plate (26) is slidably inserted into the fixed plate (25) at one end; The fixing block (27) is fixedly installed in the sliding plate (26) by a reset spring, and its size is adapted to the fixing hole; The self-lubricating component includes: The guide rail (3) is fixed on the fixing plate (25); Electromagnet 1 (31), one end of which is fixed to the top of the guide rail (3); Electromagnet 2 (32) is slidably mounted on guide rail (3) via support rod (33) and magnetically engaged with electromagnet 1 (31); The top of the fixed sleeve (34) is fixed to one end of the support rod (33).

2. The regenerative thermal oxidation device for treating large-volume waste gas with a self-lubricating lift valve according to claim 1, characterized in that, The detection component also includes: The sliding rod (210) is fixed on the movable rod (29) and rotates with the movable rod (29); The actuating block (212) has its side wall abutting against the sliding rod (210) and moves under the squeezing action of the sliding rod (210); The sliding seat (213) has its side wall fixed to one end of the actuating block (212), providing support for the actuating block (212).

3. The regenerative thermal oxidation device for treating large-volume waste gas with a self-lubricating lift valve according to claim 2, characterized in that, The detection component also includes: The slide rail (215) is fixed on the mounting block (251) and slides through the slide seat (213) to guide and limit the slide seat (213); The measuring plate (214) is fixed at one end to the sliding seat (213) and moves with the sliding seat (213); A speed sensor (216) is fixed on the side above the slide rail (215) and directly above the measuring plate (214) to measure the moving speed of the measuring plate (214).

4. The regenerative thermal oxidation device for treating large-volume waste gas with a self-lubricating lift valve according to claim 1, characterized in that, The self-lubricating component also includes: The atomizing nozzle (36) is fixed inside the fixing sleeve (34) and connected to the oil pump (39) through the oil supply pipe (37) and the four-way connector (38). The oil tank (310) is connected to the oil pump (39) to supply lubricating oil to the oil pump (39).

5. The regenerative thermal oxidation device for treating large-volume waste gas with a self-lubricating lift valve according to claim 1, characterized in that, The self-lubricating assembly further includes an auxiliary component for spreading the lubricating oil evenly, the auxiliary component comprising: The mounting shaft (351) is hinged to the fixed sleeve (34) by a torsion spring; The scraper (35) is fixed on the mounting shaft (351).

6. The regenerative thermal oxidation device for treating large-volume waste gas with a self-lubricating lift valve according to claim 5, characterized in that, The auxiliary components also include: The brush plate (4) slides against the fixed sleeve (34); The limiting rod (41) is fixed at one end to the brush plate (4) and the other end slides out from the fixed sleeve (34); The spring (42) is fixed at one end to the limiting rod (41) and at the other end to the fixing sleeve (34), providing elastic force for the brush plate (4) to reset; An airbag (43) is fixed inside a brush plate (4) and connected to a deformation bladder (44) fixed on a fixing sleeve (34).

7. The regenerative thermal oxidation device for treating large-volume waste gas with a self-lubricating lift valve according to claim 6, characterized in that, The auxiliary components also include: The pressure plate (45) abuts against the top of the deformation bladder (44) at its bottom; The extrusion rod (451) has its side wall fixed to the side wall of the pressure plate (45), and its other end abuts against the top of the scraper (35); The guide rod (46) is fixed at one end to the fixed sleeve (34) and slides out from the pressure plate (45) at the other end.

8. The regenerative thermal oxidation device for treating large-volume waste gas with a self-lubricating lift valve according to claim 7, characterized in that, The auxiliary components also include: A magnet (47) is fixed at one end to the side wall of a pressure plate (45); Electromagnet three (48) is fixed at the bottom on the fixed sleeve (34) and magnetically engaged with the magnet (47).

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