Tank-type calcining furnace with multi-point automatic cleaning function

Abstract

The present application belongs to the technical field of tank type calcination furnace, and particularly relates to a tank type calcination furnace with a multi-point automatic cleaning function, which comprises a calcination tank, a control unit is arranged on one side of the outer part of the calcination tank, a dust cleaning unit is arranged on the side close to the gravity of the control unit, and an air pressure balancing unit is arranged on the outer part of the dust cleaning unit; the present application utilizes air pressure fluctuation to trigger the relative displacement of the rubber plug ring and the compensation ring, drives the angular brush to scrape through the inner walls of the upstream and downstream pressure tapping openings, can remove the tar condensation layer and carbon black deposition existing in the inner walls of the upstream and downstream pressure tapping openings in real time, controls the differential pressure detection error within a predetermined range, and thereby guarantees the reliability of the injection system; through the moment when the ball rod enters the straight groove from the spiral groove, the extension spring drives the single-head wedge plate to reset, so that the angular brush moves axially and rotates again to scrape, and the problem that the hard coke cannot be removed by single scraping is further solved, and the medium flow of the upstream and downstream pressure tapping openings is further stabilized.

Description

Technical Field

[0001] This invention belongs to the technical field of tank calcining furnaces, specifically relating to a tank calcining furnace with multi-point automatic cleaning function. Background Technology

[0002] Tank-type calcining furnace: A vertical continuous thermal equipment with internal heating, specifically designed for the carbon industry. It uses a vertical calcining tank built with refractory bricks as its core cavity. The furnace generates high temperatures by burning fuel in the fire channel. Through indirect heating methods such as radiation and conduction, the carbon raw materials added to the calcining tank complete a continuous high-temperature treatment process of drying, preheating, calcining, and homogenization under conditions of isolation from open flame.

[0003] Core structural features: multiple tanks are arranged in parallel, with flues and calcining tanks arranged alternately. The mainstream processes are divided into co-current and counter-current types. It is the core basic equipment for carbon raw material calcination and a key upstream equipment for the production of carbon products such as prebaked anodes, graphite electrodes and carbon blocks.

[0004] Coking in the volatile matter channel of a pot furnace is the result of the combined effects of raw material characteristics, process conditions, channel structure, and airflow. Essentially, it is caused by the entrainment and deposition of carbonaceous particles, the pyrolysis and condensation of tar-like substances, incomplete combustion of volatile matter leading to carbon black formation, and the local resistance effect of the channel structure. For example, bends, diameter changes, guide walls, and connections between the channel and the flue create local resistance, causing a sudden drop in airflow velocity in these areas. Particles and tar components are deposited on the wall surface due to inertial forces. The "bottleneck effect" of the volatile matter guide holes is the most significant, with particles continuously depositing in large quantities and extending into the channel.

[0005] Existing industry solutions: Periodically inject high-pressure airflow into the volatile matter channel through a compressed air or nitrogen injection system, using the impact force of the airflow to break the adhesion of the ash layer, so that the ash particles are carried into the fire channel for combustion or discharged out of the furnace by the airflow.

[0006] Compared to traditional manual or timed pulse-jet cleaning devices, the mainstream intelligent pulse-jet cleaning systems in China now have dual pressure taps on the spray guns. However, in practice, ash accumulation at the upstream and downstream pressure taps is an inherent operating risk of the pulse-jet cleaning device for the tank calciner. In particular, the severe and continuous ash accumulation at the downstream pressure tap is a core pain point in the industry, directly affecting the accuracy of differential pressure detection and the reliability of the pulse-jet cleaning system. Summary of the Invention

[0007] To solve the above problems, the present invention adopts the following technical solution: a tank-type calcining furnace with multi-point automatic cleaning function, including a calcining tank, a control unit is arranged in the space on one side of the calcining tank, a ash cleaning unit is arranged on the side of the control unit closer to gravity, and a pressure balancing unit is arranged outside the ash cleaning unit.

[0008] The pressure balancing unit includes:

[0009] Corner joint plate, installed in the space on the side of the calcining tank away from gravity;

[0010] Corner brackets are snapped onto the outer wall of the vertical section of the corner joint plate.

[0011] The base is snap-fitted and installed in the middle of the end face of the corner bracket near the corner joint plate.

[0012] The high-temperature differential pressure tube is snap-fitted onto the inner arc surface of the base opposite the corner mounting plate; in addition, the inner corners at both ends of the high-temperature differential pressure tube are rounded and smoothly machined.

[0013] Alloy conduits are arranged in pairs, symmetrically distributed, and are connected to the high-temperature differential pressure pipe by a snap-fit ​​connection.

[0014] The upstream pressure tap is plugged into and snapped onto the outer wall of the alloy conduit at one end of the corner bracket;

[0015] The downstream pressure tap is installed on the outer wall of another alloy conduit via a plug-in snap-fit.

[0016] Preferably, a hanger rod is snapped onto the middle of the inner wall of the alloy conduit opposite to the high-temperature differential pressure tube. A double-ended cylinder is snapped onto the end of the hanger rod near the base. The double-ended cylinder has a T-shaped cross-section. Gaskets are arranged in an array on the inner wall of the horizontal section of the double-ended cylinder, with three gaskets forming a group. The gasket in the middle position is slidably snapped onto the inner wall of the double-ended cylinder. The remaining two gaskets are snapped onto the double-ended cylinder. A single-headed striker is snapped onto the axial center of the gasket in the middle position, and is slidably snapped onto the remaining two gaskets. A serrated groove is formed on the outer wall of the end of the single-headed striker near the alloy conduit.

[0017] A traction rod compatible with the snake groove is snapped onto the inner wall of the double-ended cylinder near the alloy guide tube. A reset spring sleeved on the outer wall of the traction rod is snapped onto the two gaskets at the end away from the alloy guide tube. A corner brush is snapped onto the outer wall of the single-ended striker at the end away from the alloy guide tube. The corner brush has tapered ends along its axial direction, and the cutter on the outer wall of the corner brush has a quarter-cylindrical helical surface. A sealing ring is snapped onto the inner wall of the vertical section of the double-ended cylinder at the end away from the boom.

[0018] Preferably, the vertical section of the double-ended cylinder is coaxially provided with a single-headed wedge plate adapted to the single-headed striker. In addition, the shaft section of the single-headed wedge plate passes through the sealing ring. The inner walls of both ends of the high-temperature differential pressure tube are symmetrically snapped with screen rings. The end faces of the screen rings are evenly distributed with screen openings. The outer walls of the shaft section of the single-headed wedge plate are symmetrically snapped with support rings. The outer walls of the two support rings in the same group are snapped with support pipes. The outer wall of the support pipe near the single-headed wedge plate is snapped with a rubber plug ring that slides with the inner wall of the high-temperature differential pressure tube. The end of the single-headed wedge plate away from the rod is snapped with a straight seat. The end face of the rubber plug ring near the screen ring is snapped with a pressure sensing ring. The side of the pressure sensing ring away from the rubber plug ring is provided with a limiting ring that is snapped with the inner wall of the high-temperature differential pressure tube.

[0019] Preferably, a single-sided rack is snapped onto the inner wall of the vertical section of the straight-mouth seat, and a double-insertion rotating rod is rotatably installed at the middle position of the high-temperature differential pressure tube. The double-insertion rotating rod consists of two mutually rotating rods. A single-sided gear is snapped onto the end of the double-insertion rotating rod near the axis of the high-temperature differential pressure tube, and the single-sided gear meshes with the single-sided rack. A cam is snapped onto the outer wall of both ends of the double-insertion rotating rod, and an inner support ring is symmetrically snapped onto the middle position of the high-temperature differential pressure tube. A spring pressure rod that cooperates with the cam is snapped onto the end face of the inner support ring near the double-insertion rotating rod.

[0020] Preferably, a compensating ring is slidably snapped onto the outer wall of the branch pipe at the end away from the rubber plug ring. In addition, the compensating ring is threadedly assembled with the inner wall of the high-temperature differential pressure pipe. A telescopic spring sleeved on the outer wall of the branch pipe is snapped onto both the compensating ring and the rubber plug ring. A convex engagement ring is symmetrically snapped onto the middle position of the high-temperature differential pressure pipe. A drive gear is rotatably fitted onto the outer end face of the convex engagement ring via a rotating shaft. A driven gear is rotatably fitted onto one side of the drive gear and rotates with the outer wall of the convex engagement ring. An angle steel ring is snapped onto the end of the driven gear away from the convex engagement ring. A guide rod is symmetrically snapped onto the end face of the angle steel ring away from the convex engagement ring, and the guide rod passes through the compensating ring. The vertical section is T-shaped and slidably snapped onto the compensating ring.

[0021] Preferably, an outer ring is symmetrically arranged between the two opposing convex engagement rings, and the outer ring is snapped into the inner wall of the high-temperature differential pressure pipe. An inner ring is provided at the axis of the outer ring and is rotatably installed with the convex engagement ring. The inner wall of the inner ring has a straight groove and a spiral groove that are connected to each other. A clutch tooth plate is snapped into the outer wall of the inner ring in an array. A corrugated sleeve is snapped into the inner wall of the vertical section of the clutch tooth plate. The corrugated sleeve has an internal support spring connected to the clutch tooth plate. A roller is rotatably installed at the end of the corrugated sleeve away from the clutch tooth plate. An end ring is snapped into the end of the branch pipe near the axis of the double-insertion rotating rod. A ball rod is snapped into the middle position of the outer wall of one side of the end ring.

[0022] Preferably, the calcining tank is fitted with a furnace top at the end opposite to gravity, and a furnace bottom is fitted at the side of the calcining tank closest to gravity. The calcining tank has at least one fire channel arranged in an array inside. An observation hole connected to the fire channel is opened on the top surface of the furnace. A sealing door is installed at the end of the observation hole opposite to gravity by bolts. Refractory bricks are evenly stacked on the side of the furnace top opposite to gravity.

[0023] Preferably, the control unit includes:

[0024] The transfer trolley is set on the side of the furnace top away from gravity, and the transfer trolley rolls with the top surface of the furnace through rollers.

[0025] The ash removal cylinder is snapped onto the end face of the transfer trolley opposite the calcining tank.

[0026] There are two handrails, which are symmetrically snapped onto the outer wall of the dust removal cylinder;

[0027] The servo motor is mounted on the end face of the ash cleaning cylinder away from the calcining tube via a mounting bracket.

[0028] The corner plate is rotatably mounted on the outer wall of the servo motor output end, and the corner plate and the dust removal cylinder are embedded and snap-fitted together.

[0029] The electric telescopic rod is snapped onto the output end of the servo motor.

[0030] The central control panel is snapped onto the end of the electric telescopic pole furthest from the servo motor.

[0031] The bearing seat is snap-fitted onto the end of the center console furthest from the turntable.

[0032] Preferably, the dust removal unit includes:

[0033] The multi-head bearings are arranged in groups of three, with three groups in total, and are evenly distributed circumferentially on the end face of the bearing away from the center console; in addition, the multi-head bearings are connected to the bearing via ball joints.

[0034] Angle plates are snapped onto the end faces of the three multi-head seats in the same group, away from the shaft seat.

[0035] The corner ball is hinged to the end of the multi-head seat away from the axle seat and passes through the corner plate;

[0036] The valve seat is snap-fitted onto the outer wall of the end of the ball joint away from the shaft seat;

[0037] The electromagnetic jet valve is snap-fitted onto the end face of the valve seat away from the shaft seat; in addition, the horizontal section of the corner plate is located between the electromagnetic jet valve and the valve seat, and is snap-fitted to both.

[0038] The air inlet end is snapped onto the outer wall of one side of the electromagnetic jet valve;

[0039] The exhaust port is located on the side of the electromagnetic jet valve away from the air inlet, and the exhaust port and the electromagnetic jet valve are installed in a plug-in snap-fit ​​manner.

[0040] The air outlet is snapped onto the side of the electromagnetic jet valve closest to gravity.

[0041] The blowpipe is installed on the side of the air outlet away from the valve seat using a plug-in snap-fit ​​design.

[0042] Preferably, a sub-arc seat is snapped onto the outer wall of the blow pipe on the side away from the high-temperature differential pressure pipe. A high-temperature motor is snapped onto the end of the sub-arc seat near the valve seat. A fully automatic telescopic rod, rotatably assembled with the sub-arc seat, is snapped onto the output end of the high-temperature motor. An angle seat is snapped onto the end of the fully automatic telescopic rod away from the valve seat. A blocking chamber is rotatably fitted onto the end of the angle seat away from the valve seat, and a gear set is built into the blocking chamber. An angle rod is rotatably fitted onto the end of the blocking chamber away from the angle seat via a rotating shaft. A brush ring is snapped onto the outer wall of the angle rod. An angle shovel is snapped onto the outer wall of the brush ring in a circumferentially uniform manner, and the angle shovel is inclined to the outer wall of the brush ring. An air plate is snapped onto the end of the angle shovel near the axis of the brush ring, and the blowing direction of the air plate is tangent to the surface of the angle shovel.

[0043] The self-cleaning and pressure monitoring method of the dual pressure taps inside the spray gun tube in the intelligent injection system adopts a tank-type calcining furnace with multi-point automatic cleaning function to achieve self-cleaning and maintain pressure balance. The specific steps are as follows:

[0044] S1: The operator makes a preliminary judgment on the coking status inside the fire channel through the observation hole. When a certain amount of coking occurs, the operator moves the cleaning cylinder to the top of the fire channel in different areas through the transfer trolley (the sealing door is opened before this). Then, under the control of the electric telescopic rod, the central control console drives the cleaning unit and the air pressure balance unit to move along the axis of the cleaning cylinder to the predetermined depth through the bearing. The relative rotation angle of the bearing can be changed in real time through the servo motor to ensure that the cleaning unit fully covers the working range of coking on the inner wall of the fire channel in the rotating scenario.

[0045] S2: The equivalent amount of gas flowing from the inlet to the outlet is controlled by the electromagnetic jet valve, and then quantitatively jetted to the predetermined area of ​​the fire channel through the jet pipe. Through the coordinated cooperation between the upstream and downstream pressure taps, the stable static pressure of the jetting airflow in the area flowing through the jet pipe port is collected in real time as a reference pressure for the jetting process, realizing the technological leap from passive timed jetting to active on-demand jetting.

[0046] During this process, the elastic force of the extension spring provides a relatively stable environment for the rubber plug ring and the airflow inside the blowpipe. At the moment of air pressure fluctuation, the aforementioned environment is simultaneously fluctuated, causing a change in the relative displacement between the rubber plug ring and the compensation ring (relatively stationary). At this time, the branch pipe drives the single-head wedge plate to move synchronously through the branch ring, changing the relative interaction depth between the single-head wedge plate and the single-head striker. The single-head striker moves towards the axis of the double-opening cylinder with a displacement corresponding to the aforementioned instantaneous fluctuation. Through the relative movement between the traction rod and the snake groove on the outer wall of the single-head striker, the relative rotation variable of the single-head striker's own angle under the axial displacement scenario is simultaneously adjusted, driving the angle brush to perform a through-scraping operation on the inner wall of the upstream or downstream pressure tap, stabilizing the medium flow at the interface between the two and the blowpipe.

[0047] S3: By synchronizing the movement between the end ring and the branch pipe, the relative interaction depth between the ball rod and the inner spiral groove is changed in real time. By unidirectional meshing between the roller and the outer ring, the instantaneous fluctuation of air pressure within a predetermined cycle is accumulated and recorded until the ball rod enters the straight groove from the spiral groove. At this instant, the single-sided gear and the single-sided rack mesh synchronously to reach a predetermined threshold, and the cam squeezes the spring pressure rod, which serves as the air pressure fluctuation alarm benchmark within the current cycle.

[0048] At the instant the cue enters the straight groove, the branch pipe, under the elastic restoring force of the extension spring, controls the single-headed wedge plate to move to the initial position in a relatively short time, realizing the "instantaneous" relative reverse movement between the single-headed wedge plate and the single-headed striker. The single-headed striker controls the angle brush to generate axial relative operation with the upstream or downstream pressure tap, and at the same time, changes the angle of the angle brush under the aforementioned movement again through the traction rod, thus forming synchronous rotation in the axial movement scenario of the angle brush;

[0049] Furthermore, the relative position between the compensation ring and the high-temperature differential pressure tube can be adjusted synchronously through the meshing of the driving gear and the driven gear. That is, when the angle steel ring rotates, it drives the compensation ring to rotate through the guide rod and provides it with guiding support, so as to smoothly achieve the thread fit depth between the compensation ring and the high-temperature differential pressure tube. Then, the current deformation of the telescopic spring can be adjusted. On the one hand, it can dynamically adapt to the different air pressure environment requirements of the blowpipe; on the other hand, it can appropriately correct the relative balance force between the rubber plug ring, the compensation ring and the external gas when the elasticity of the telescopic spring decays, thereby further improving the accuracy of differential pressure acquisition.

[0050] S4: The high-temperature resistant motor drives the fully automatic telescopic rod to rotate to a predetermined angle until the corner rod is directly opposite the blow pipe. Then, the fully automatic telescopic rod retracts the corner seat until the brush ring enters the blow pipe. Finally, the dust accumulation in the blow pipe port area is removed by mechanical scraping with a corner shovel and assisted by air jet blowing, and the air pressure before and after blowing is stabilized.

[0051] The present invention has the following beneficial effects:

[0052] 1. This invention utilizes air pressure fluctuations to trigger the relative displacement of the rubber plug ring and the compensation ring, driving the angle brush to scrape through the inner walls of the upstream and downstream pressure taps. This can remove the tar condensate layer and carbon black deposits on the inner walls of the upstream and downstream pressure taps in real time, keeping the differential pressure detection error within a predetermined range, thereby ensuring the reliability of the injection system.

[0053] In addition, the telescopic spring drives the single-headed wedge plate to reset at the moment the ball rod enters the straight groove, so that the corner brush can move axially and rotate to scrape again, effectively removing the dense coking layer on the inner wall of the upstream and downstream pressure taps, further solving the problem that the hard coke cannot be removed by a single scraping, and further stabilizing the medium flow rate of the upstream and downstream pressure taps.

[0054] 2. This invention uses the unidirectional meshing of the roller and the outer ring to accumulate and record the air pressure fluctuations within a predetermined period in the spiral groove. When the fluctuation reaches the threshold, an alarm is triggered to remind the operator to check the air source or channel blockage in a timely manner within the predetermined period, thereby avoiding the temperature imbalance of the fire channel caused by the failure of the injection system.

[0055] 3. This invention adjusts the position of the compensation ring by meshing the driving gear and the driven gear, which can dynamically adapt to different air pressure environments of the blowpipe. At the same time, when the elasticity of the telescopic spring decreases, it automatically corrects the balancing force between the rubber plug ring and the compensation ring, thereby ensuring the long-term stability of the differential pressure acquisition, while reducing the frequency of spring replacement and increasing its relative service life.

[0056] 4. This invention, through the coordinated operation of mechanical scraping with an angle shovel and air plate blowing, can ensure the degree of removal of coking and ash accumulation in the port area of ​​the blowing pipe, that is, to achieve full coverage of the coking area that causes air pressure fluctuations, further stabilize the relative stability of air pressure fluctuations before and after blowing, and further reduce the risk of temperature imbalance in the fire channel. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0058] Figure 2 This is a plan view of the internal structure of the ash removal cylinder and calcining tank in this invention.

[0059] Figure 3 This is a plan view of the control unit and the dust removal unit in this invention.

[0060] Figure 4 This is a three-dimensional structural diagram of the dust removal unit and the air pressure balance unit in this invention.

[0061] Figure 5 This is an appendix to the present invention. Figure 4 Left view of the middle structure.

[0062] Figure 6 This is a three-dimensional view of the internal structure of the high-temperature differential pressure pipe and the jet pipe in this invention.

[0063] Figure 7 This is a three-dimensional view of a partial structure of the air pressure balance unit in this invention.

[0064] Figure 8 This is a partial three-dimensional view of the internal structure of the high-temperature differential pressure tube in this invention.

[0065] Figure 9 This is a three-dimensional view of another part of the air pressure balance unit in this invention.

[0066] Figure 10 This is a partial structural plan view of the air pressure balance unit in this invention.

[0067] Figure 11 This is a plan view of the internal partial structure of the high-temperature differential pressure tube of the present invention.

[0068] Figure 12 This is a partial cross-sectional view of the three-dimensional assembly of the outer ring, inner ring, and clutch tooth plate in this invention.

[0069] The diagram is labeled as follows: 1. Calcination tank; 2. Control unit; 3. Ash removal unit; 4. Pressure balance unit.

[0070] 11. Furnace top; 12. Furnace bottom; 13. Fire channel; 14. Observation hole; 15. Sealing door; 16. Refractory bricks;

[0071] 21. Transfer trolley; 22. Dust removal cylinder; 23. Handrail; 24. Servo motor; 25. Angle plate; 26. Electric telescopic rod; 27. Central control panel; 28. Shaft seat;

[0072] 31. Multi-head seat; 32. Angle plate; 33. Angle ball; 34. Valve seat; 35. Electromagnetic jet valve; 36. Air inlet; 37. Exhaust port; 38. Air outlet; 39. Jet pipe;

[0073] 311. Sub-arc seat; 312. High-temperature resistant motor; 313. Fully automatic telescopic rod; 314. Angle seat; 315. Blocking chamber; 316. Angle rod; 317. Brush ring; 318. Angle shovel; 319. Air plate;

[0074] 41. Corner joint plate; 42. Corner hanging plate; 43. Base; 44. High temperature differential pressure pipe; 45. Alloy conduit; 46. Upstream pressure tap; 47. Downstream pressure tap;

[0075] 411. Borehole; 412. Double-ended cylinder; 413. Gasket; 414. Single-ended firing pin; 415. Snake groove; 416. Traction rod; 417. Return spring; 418. Angle brush; 419. Sealing ring;

[0076] 421. Single-headed wedge plate; 422. Screen ring; 423. Support ring; 424. Branch pipe; 425. Rubber plug ring; 426. Straight seat; 427. Pressure sensing ring; 428. Limiting ring;

[0077] 431. Single-sided rack; 432. Double-ended rotary rod; 433. Single-sided gear; 434. Cam; 435. Inner support ring; 436. Spring pressure rod;

[0078] 441. Compensating ring; 442. Telescopic spring; 443. Convex engagement ring; 444. Driving gear; 445. Driven gear; 446. Angle steel ring; 447. Guide rod;

[0079] 451. Outer ring; 452. Inner ring; 453. Clutch tooth plate; 454. Corrugated sleeve; 455. Roller; 456. End ring; 457. Cue stick. Detailed Implementation

[0080] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0081] It should be noted that the terms "vertical," "horizontal," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0082] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0083] Reference Figure 1 , Figure 2 and Figure 3 It is known that a calcining furnace with multi-point automatic cleaning function includes a calcining tank 1, a control unit 2 is provided on one side of the calcining tank 1, a ash cleaning unit 3 is provided on the side of the control unit 2 near gravity, and a pressure balancing unit 4 is provided outside the ash cleaning unit 3.

[0084] Reference Figure 1 and Figure 2 It is known that the furnace top 11 is snapped onto the side of the calcining tank 1 away from gravity, and the furnace bottom 12 is snapped onto the side of the calcining tank 1 near gravity. The calcining tank 1 has fire channels 13 arranged in an array inside, at least one of which is provided. An observation hole 14 connected to the fire channel 13 is opened on the end face of the furnace top 11. A sealing door 15 is snapped onto the end of the observation hole 14 away from gravity by bolts. Refractory bricks 16 are evenly stacked on the end face of the furnace top 11 away from gravity.

[0085] Reference Figure 1 , Figure 2 and Figure 3 It is known that the control unit 2 includes: a transfer trolley 21, which is set on the end face of the furnace top 11 away from gravity, and the transfer trolley 21 rolls with the end face of the furnace top 11 through rollers; a cleaning cylinder 22, which is snapped onto the end face of the transfer trolley 21 away from the calcining tank 1; two handrails 23, which are symmetrically snapped onto the outer wall of the cleaning cylinder 22; a servo motor 24, which is snapped onto the end face of the cleaning cylinder 22 away from the calcining tube through a mounting seat; a corner plate 25, which is rotatably installed on the outer wall of the output end of the servo motor 24, and the corner plate 25 is embedded and snapped onto the cleaning cylinder 22; an electric telescopic rod 26, which is snapped onto the output end of the servo motor 24; a central control panel 27, which is snapped onto the end of the electric telescopic rod 26 away from the servo motor 24; and a bearing 28, which is snapped onto the end of the central control panel 27 away from the corner plate 25.

[0086] Reference Figure 3 , Figure 4 and Figure 5 It can be seen that the dust removal unit 3 includes: a multi-head seat 31, three in a group, for a total of three groups, and evenly distributed circumferentially on the end face of the bearing seat 28 away from the central control panel 27; in addition, the multi-head seat 31 is connected to the bearing seat 28 by ball joint; a corner plate 32, which is snapped onto the end face of the three multi-head seats 31 in the same group away from the bearing seat 28; a corner ball 33, which is hinged onto the end of the multi-head seat 31 away from the bearing seat 28 and passes through the corner plate 32; a valve seat 34, which is snapped onto the outer wall of the end of the corner ball 33 away from the bearing seat 28; and an electromagnetic jet valve 35, which is snapped onto the end face of the valve seat 34 away from the bearing seat 28.

[0087] In addition, the horizontal section of the corner plate 41 is located between the electromagnetic jet valve 35 and the valve seat 34, and is snap-fitted to both; the air inlet 36 is snap-fitted to the outer wall of one side of the electromagnetic jet valve 35; the exhaust port 37 is located on the side of the electromagnetic jet valve 35 away from the air inlet 36, and the exhaust port 37 is snap-fitted to the electromagnetic jet valve 35; the air outlet 38 is snap-fitted to the side of the electromagnetic jet valve 35 near gravity; and the jet pipe 39 is snap-fitted to the side of the air outlet 38 away from the valve seat 34.

[0088] A simplified process for observing and removing coke buildup in calcining furnace flue 13:

[0089] S1.1: The operator unlocks and opens the sealing door 15 of the observation hole 14 on the furnace top 11 to expose the observation hole 14. Then, the high-temperature resistant industrial endoscope (not shown in the figure) is inserted into the fire channel 13 through the observation hole 14. The high-definition camera of the endoscope is used to visually inspect the inner wall of the fire channel 13, the volatile matter guide hole and other areas with severe coking (and when the ash cleaning operation is completed, the observation hole 14 is sealed again through the sealing door 15 to prevent flue gas leakage and cold air from entering and disrupting the thermal balance inside the furnace).

[0090] S1.2: For fire passage 13 with severe coking: The operator pushes the transfer trolley 21 using the handle 23 until the ash removal cylinder 22 accurately falls directly above the target fire passage 13. Then, the operator locks the four high-temperature resistant rollers of the transfer trolley 21 (in practice, the position of the rollers can be temporarily locked using a corresponding limiting structure - and this is supported by existing technology). The servo motor 24 is started. The servo motor 24 achieves synchronous movement between the electric telescopic rod 26 and the bearing seat 28 (in practice, a high-temperature resistant graphite gasket 413 can be added between the contact surface of the angle plate 25 and the electric telescopic rod 26 to reduce high-temperature wear). The circumferential angle of the bearing seat 28 is adjusted to achieve full coverage between the blowpipe 39 (in practice, the blowpipe 39 achieves full coverage of the blowpipe angle through a two-axis linkage between the axial and circumferential directions) and the inner wall of the fire passage 13, that is, the three sets of multi-head seats 31 are at 120°. The dust removal unit 3 is evenly distributed to ensure 360° full coverage of the inner wall of the fire channel 13, avoiding the occurrence of cleaning dead corners;

[0091] S1.3: Open the electromagnetic jet valve 35, and compressed air enters from the inlet end 36. After being quantitatively distributed by the flow regulating valve core in the valve body, it is delivered to the jet pipe 39 through the outlet end 38 and jetted to the coking area of ​​the fire channel 13 at a predetermined pressure.

[0092] During the purging process, the upstream pressure tap 46 collects the stable static pressure before purging, and the downstream pressure tap 47 collects the resistance static pressure after purging. The pressure difference between the two is transmitted to the external control and processing system in real time, and finally the electromagnetic purging valve 35 realizes on-demand purging.

[0093] Handrail 23: The installation position conforms to ergonomics, providing a stable support environment for operators, and at the same time reducing the vibration of the dust removal cylinder 22 during actual operation to a certain extent, indirectly reducing the relative air pressure fluctuation problem caused by external vibration;

[0094] Central control console 27: In specific implementation, a corresponding mechanical transmission structure can be set inside, which, together with the angle plate 32, the ball 33 and the multi-head seat 31, can realize multi-degree-of-freedom adjustment of the valve seat 34 angle;

[0095] Exhaust port 37: for rapid pressure relief of residual gas in the valve body cavity to ensure accurate injection pressure, for discharge of condensate and impurities to prevent jamming and wear of valve components inside the valve body, for assisting the valve core to quickly reset and reduce response delay, and for pressure relief in case of abnormal pressure to ensure valve body safety.

[0096] Reference Figure 4 , Figure 5 and Figure 6It is known that the pressure balancing unit 4 includes: a corner plate 41, which is set in the space on the side of the calcining tank 1 away from gravity; a corner bracket 42, which is snapped onto the outer wall of the vertical section of the corner plate 41; a base 43, which is snapped onto the middle position of the end face of the corner bracket 42 near the corner plate 41; a high-temperature differential pressure pipe 44, which is snapped onto the inner arc surface of the base 43 on the side away from the corner bracket 42; in addition, the inner corners of both ends of the high-temperature differential pressure pipe 44 are rounded and smoothly processed; alloy conduits 45, which are arranged in pairs and symmetrically inserted, and the alloy conduits 45 are snapped onto the high-temperature differential pressure pipe 44; an upstream pressure tap 46, which is snapped onto the outer wall of the alloy conduit 45 at one end of the corner bracket 42; and a downstream pressure tap 47, which is snapped onto the outer wall of the alloy conduit 45 at the other end.

[0097] Reference Figure 6 and Figure 7 It can be seen that a hanger 411 is snapped into the middle of the inner wall of the alloy conduit 45 away from the high temperature differential pressure tube 44. A double-ended cylinder 412 is snapped into the end of the hanger 411 near the base 43. The double-ended cylinder 412 has a T-shaped cross section. The inner wall of the horizontal section of the double-ended cylinder 412 is provided with gaskets 413 in an array, and three gaskets 413 form a group. The gasket 413 in the middle position is slidably snapped into the inner wall of the double-ended cylinder 412. The remaining two gaskets 413 are snapped into the double-ended cylinder 412. A single-headed firing pin 414 is snapped into the axial position of the gasket 413 in the middle position and is slidably snapped into the remaining two gaskets 413. A snake groove 415 is opened on the outer wall of the end of the single-headed firing pin 414 near the alloy conduit 45.

[0098] A traction rod 416, compatible with the snake groove 415, is snapped onto the inner wall of the double-opening cylinder 412 near the alloy guide tube 45. A return spring 417, sleeved on the outer wall of the traction rod 416, is snapped onto the two gaskets 413 at the end away from the alloy guide tube 45. A corner brush 418 is snapped onto the outer wall of the single-headed firing pin 414 at the end away from the alloy guide tube 45. The corner brush 418 has tapered ends and the cutter on the outer wall of the corner brush 418 has a quarter-cylindrical spiral surface. A sealing ring 419 is snapped onto the inner wall of the vertical section of the double-opening cylinder 412 away from the hanging rod 411.

[0099] Reference Figure 8 , Figure 9 and Figure 10It can be seen that a single-headed wedge plate 421, which is compatible with the single-headed firing pin 414, is coaxially arranged inside the vertical section of the double-opening cylinder 412. In addition, the shaft section of the single-headed wedge plate 421 passes through the sealing ring 419. The inner walls of both ends of the high-temperature differential pressure pipe 44 are symmetrically snapped with screen rings 422. The end face of the screen ring 422 has screen openings evenly distributed. The outer wall of the shaft section of the single-headed wedge plate 421 is symmetrically snapped with support rings 423. The outer walls of the two support rings 423 in the same group are jointly snapped with support pipes 4. 24. A rubber plug ring 425, which is slidably assembled with the inner wall of the high-temperature differential pressure pipe 44, is snapped onto the outer wall of the branch pipe 424 near the single-headed wedge plate 421. A straight seat 426 is snapped onto the end of the single-headed wedge plate 421 away from the hanger rod 411. A pressure sensing ring 427 is snapped onto the end face of the rubber plug ring 425 near the screen ring 422. A limiting ring 428, which is snapped onto the inner wall of the high-temperature differential pressure pipe 44, is provided on the side of the pressure sensing ring 427 away from the rubber plug ring 425.

[0100] Reference Figure 10 and Figure 11 It can be seen that a single-sided rack 431 is snapped onto the inner wall of the vertical section of the straight seat 426, and a double-insertion rotating rod 432 is rotatably installed in the middle position of the high-temperature differential pressure tube 44. The double-insertion rotating rod 432 is composed of two mutually rotating rods. A single-sided gear 433 is snapped onto the end of the double-insertion rotating rod 432 near the axis of the high-temperature differential pressure tube 44, and the single-sided gear 433 meshes with the single-sided rack 431. A cam 434 is snapped onto the outer wall of both ends of the double-insertion rotating rod 432. An inner support ring 435 is symmetrically snapped onto the middle position of the high-temperature differential pressure tube 44. A spring pressure rod 436 that cooperates with the cam 434 is snapped onto the end face of the inner support ring 435 near the double-insertion rotating rod 432.

[0101] Reference Figure 8 and Figure 9 It can be seen that a compensating ring 441 is slidably snapped onto the outer wall of the branch pipe 424 away from the rubber stopper ring 425. In addition, the compensating ring 441 is threadedly assembled with the inner wall of the high-temperature differential pressure pipe 44. The compensating ring 441 and the rubber stopper ring 425 are both snapped onto a telescopic spring 442 sleeved on the outer wall of the branch pipe 424. A convex engagement ring 443 is symmetrically snapped onto the middle position of the high-temperature differential pressure pipe 44. The outer end face of the convex engagement ring 443 is rotated and fitted by a rotating shaft. A drive gear 444 is installed, and a driven gear 445 is provided on one side of the drive gear 444, which is rotatably fitted to the outer wall of the convex ring 443. An angle steel ring 446 is snapped onto the end of the driven gear 445 away from the convex ring 443. A guide rod 447 is symmetrically snapped onto the end face of the angle steel ring 446 away from the convex ring 443. The guide rod 447 passes through the compensation ring 441, has a T-shaped vertical section, and is slidably snapped onto the compensation ring 441.

[0102] Reference Figure 9 and Figure 12It can be seen that an outer ring 451 is symmetrically arranged between two opposing convex rings 443, and the outer ring 451 is snapped into the inner wall of the high-temperature differential pressure pipe 44. An inner ring 452 is set at the axis of the outer ring 451 and is rotatably installed with the convex ring 443. The inner wall of the inner ring 452 has a straight groove and a spiral groove that are connected. The outer wall of the inner ring 452 is snapped into the clutch tooth plate 453 in an array. The inner wall of the vertical section of the clutch tooth plate 453 is snapped into the corrugated sleeve 454, and the corrugated sleeve 454 has an internal support spring connected to the clutch tooth plate 453. A roller 455 is rotatably installed at the end of the corrugated sleeve 454 away from the clutch tooth plate 453. An end ring 456 is snapped into the end of the branch pipe 424 near the axis of the double-insertion rotating rod 432. A ball rod 457 is snapped into the middle of the outer wall of one side of the end ring 456.

[0103] The initial cleaning process of the angle brush 418 on the inner walls of the upstream and downstream pressure taps 47:

[0104] Prerequisites: 1. Instantaneous pressure difference fluctuations occur at the upstream and downstream pressure taps 47; 2. Under a predetermined blowing pressure environment (a certain value), the air pressure inside the rubber plug ring 425 and the blowing pipe 39 is stable in a relatively balanced state.

[0105] At the moment of pressure fluctuation, the pressure balance between the rubber plug ring 425 and the blow pipe 39 is disrupted. At this time, under the reset action of the telescopic spring 442, the rubber plug ring 425 synchronously controls the branch pipe 424 to move a predetermined distance towards the compensation ring 441. At the same time, under the control of the branch ring 423, the single-head wedge plate 421 reduces the relative interaction depth with the single-head impact pin 414, causing the single-head impact pin 414 to have a displacement in the direction of the double-opening cylinder 412 axis at an instant (in the current state, the reset spring 417 is also in a relatively compressed state, that is, through the self-restoring force of the reset spring 417, it provides further axial movement support to the single-head impact pin 414), which in turn causes the angle brush 418 to perform a relative scraping unidirectional movement at the junction of the upstream pressure tap 46 and the blow pipe, completing the preliminary cleaning operation of the coking inside the aforementioned area;

[0106] While the single-headed striker 414 generates axial movement, the relative engagement movement between the traction rod 416 (relatively stationary) and its outer wall groove 415 (in specific implementation, the relative rotation speed of the angle brush 418 can be adjusted by designing the pitch of the groove 415) synchronously adjusts the relative angle between the single-headed striker 414 and the horizontal section of the double-opening cylinder 412 in the current state. That is, when the single-headed striker 414 moves axially, a circumferential movement is added, which further improves the relative working dimension of the angle brush 418 and the aforementioned area with coking, which helps to improve the scraping effect.

[0107] In addition, the outer wall cutter of the angle brush 418 is designed with a quarter-cylindrical spiral surface. On the one hand, it helps to improve the shearing action between the angle brush 418 and the coking, and on the other hand, it can effectively prevent the problem of jamming between the detached coking and the "cutter". That is, it guides the coking in the detached state and ensures the long-term operational stability between the angle brush 418 and the coking.

[0108] Corner plate 41, corner hanging plate 42 and base 43: Through the spatial arrangement of the three, they provide further stable support to the high temperature differential pressure tube 44 and reduce the impact of external vibration on the final balance effect of the air pressure balance unit 4.

[0109] It is hereby noted that in specific implementation, there is an assembly gap between the double-opening cylinder 412 and the upstream and downstream pressure taps 47 and the alloy guide tube 45, so as to ensure the gas flow between the rubber plug ring 425 and the blow pipe 39, which is the basic guarantee for gas pressure balance.

[0110] The cumulative record of air pressure fluctuations within a given period and the secondary cleaning process of the corresponding area by the 418 angle brush:

[0111] Prerequisite environment: Multiple single instantaneous fluctuations in air pressure;

[0112] Let's take a single instantaneous fluctuation as an example:

[0113] First, under the control of the rubber stopper ring 425, the branch pipe 424 synchronously drives the end ring 456 to move a predetermined distance towards the centerline of the high-temperature differential pressure pipe 44 (the distance is determined by the aforementioned instantaneous fluctuation degree, that is, there is a linear relationship between the two).

[0114] Next, the cue stick 457 engages with the spiral groove on the inner wall of the inner ring 452 to a corresponding degree (in the initial state, the cue stick 457 is exactly at the intersection of the spiral groove and the straight groove). Under the engagement of the cue stick 457, the inner ring 452 synchronously drives the clutch plate 453 to rotate a predetermined angle. At this time, the roller 455 moves towards the wide area formed by the clutch plate 453, the outer ring 451 and the inner ring 452. That is, there is no relative contact friction between the roller 455 and the inner wall of the outer ring 451. At this time, the inner ring 452 can synchronously rotate a predetermined angle.

[0115] When the external air pressure returns to relative equilibrium, the branch pipe 424 should have a driving force to move towards the initial position, that is, there is a tendency for the cue stick 457 and the inner ring 452 to move in opposite directions. However, at the moment the inner ring 452 rotates in the opposite direction, the roller 455 moves towards the "narrow zone" corresponding to the aforementioned "wide zone". At this time, the roller 455 and the outer ring 451 generate a relatively engaging contact friction. That is, in the current state, the outer ring 451 restricts the inner ring 452 to rotate in the opposite direction (and when the external air pressure fluctuates again, the inner ring 452 can only rotate in one direction), until the cue stick 457 enters another junction point of the straight groove and the spiral groove (this is the predetermined limit preset threshold of this application).

[0116] During this process, under the synchronous action of the single-headed wedge plate 421, the straight seat 426 drives the single-sided rack 431 to engage with the single-sided gear 433 at the corresponding position until the cam 434 contacts the spring pressure rod 436 and maintains a certain pressure (at this time, the ball rod 457 synchronously enters another junction point of the straight groove and the spiral groove; and in specific implementation, the spring pressure rod 436 can be connected to an external pressure detection control and processing system, and the operator can be alerted by an alarm light).

[0117] Finally, under the elastic restoring force of the extension spring 442, the branch pipe 424 drives the rubber plug ring 425 to move away from the centerline of the high-temperature differential pressure pipe 44 until the rubber plug ring 425 moves to the initial position.

[0118] At this time, the single-headed wedge plate 421 is again squeezed relative to the single-headed impact pin 414, causing the single-headed impact pin 414 to drive the angle brush 418 to perform relative scraping motion with the inner wall of the junction of the upstream and downstream pressure taps 47 and the blow pipe 39 under the support and guidance of the gasket 413 (the traction rod 416 again realizes the relative rotation support of the angle brush 418), realizing the secondary supplementary scraping operation of the angle brush 418, and fully ensuring the relative cleanliness of the area at the junction of the upstream and downstream pressure taps 47 and the blow pipe 39;

[0119] It is hereby noted that after the ball rod 457 enters the straight groove, the single-headed wedge plate 421 has stored a considerable amount of recovery potential energy. Therefore, during the recovery process, the relative interaction between the single-headed wedge plate 421 and the single-headed striker 414 tends to be elastic and repetitive. This further increases the relative operational complexity between the angle brush 418 and the coking, which helps to improve the scraping effect of the coking.

[0120] The reset process of cam 434: During the movement of single-headed wedge plate 421 to the initial position, single-sided rack 431 meshes with single-sided gear 433 in the opposite direction, causing double-ended rotation to control cam 434 to rotate to the initial position.

[0121] When faced with different blowing pressure environments, the process of pressure rebalancing between the rubber stopper ring 425 and the blowing pipe 39, or the process of pressure correction between the rubber stopper ring 425 and the blowing pipe 39 when the elasticity of the telescopic spring 442 decreases:

[0122] By engaging the driven gear 445 with the active gear 444 (in specific implementation, the active gear 444 can be driven to rotate by the built-in motor), the angle steel ring 446, under the control of the driven gear 445, drives the compensation ring 441 to rotate a predetermined angle through the guide rod 447. During this process, the guide rod 447 provides movement guidance support to the compensation ring 441 until the pressure sensing ring 427 and the limit ring 428 come into contact and remain within the predetermined pressure value. This means that the current telescopic spring 442 is sufficient to maintain the air pressure balance between the rubber plug ring 425 and the nozzle.

[0123] Furthermore, the purpose of using threaded assembly between the compensation ring 441 and the high-temperature differential pressure tube 44 is to enable high-precision adjustment of any variable, thereby increasing the adjustment bandwidth and improving practicality.

[0124] Reference Figure 4 and Figure 5 It is known that a sub-arc seat 311 is snapped onto the outer wall of the blowpipe 39 on the side opposite to the high-temperature differential pressure pipe 44. A high-temperature motor 312 is snapped onto the end of the sub-arc seat 311 near the valve seat 34. A fully automatic telescopic rod 313, which rotates and rotatably assembles with the sub-arc seat 311, is snapped onto the output end of the high-temperature motor 312. An angle seat 314 is snapped onto the end of the fully automatic telescopic rod 313 opposite to the valve seat 34. A blocking chamber 315 is rotatably fitted onto the end of the angle seat 314 opposite to the valve seat 34. Furthermore, the blocking chamber 315 has a built-in gear set inside. The end of the blocking chamber 315 away from the corner seat 314 is fitted with an angle rod 316 via a rotating shaft. A brush ring 317 is snapped onto the outer wall of the angle rod 316. An angle shovel 318 is snapped onto the outer wall of the brush ring 317 in a circumferentially uniform manner. The angle shovel 318 is inclined to the outer wall of the brush ring 317. An air plate 319 is snapped onto the end of the angle shovel 318 near the axis of the brush ring 317. The blowing direction of the air plate 319 is tangent to the surface of the angle shovel 318.

[0125] Cleaning process for coking on the inner wall of the outlet end of blowpipe 39:

[0126] After the dust removal is completed, the high-temperature resistant motor 312 drives the fully automatic telescopic rod 313 to rotate, so that the angle rod 316 is aligned with the port of the blowpipe 39. The fully automatic telescopic rod 313 retracts and drives the brush into the pipe. Then, through the mechanical scraping of the angle shovel 318 (in specific implementation, a drive motor can be built into the angle seat 314, and a gear set can be set inside the blocking chamber 315, and the gear set is engaged with the angle rod 316 to realize the rotation of the brush ring 317) and the auxiliary blowing of the air plate 319, the accumulated dust and coke at the port of the blowpipe 39 are removed, so that the air pressure fluctuation before and after the blowing is controlled within a certain range, and the subsequent blowing effect is stabilized.

[0127] Finally, the electric telescopic rod 26 drives the dust removal unit 3 and the air pressure balance unit 4 to rise into the dust removal cylinder 22, and the transfer trolley 21 moves to the standby position, thus completing the entire dust removal process.

[0128] The working principle of the tank calciner with multi-point automatic cleaning function provided by the present invention is as follows: First step: The operator makes a preliminary judgment on the coking state inside the fire channel 13 through the observation hole 14. When a certain amount of coking occurs, the operator moves the ash cleaning cylinder 22 to the fire channel 13 in different areas through the transfer trolley 21 (the sealing door 15 is opened before this). Then, under the control of the electric telescopic rod 26, the central control console 27 drives the ash cleaning unit 3 and the air pressure balance unit 4 to move along the axis of the ash cleaning cylinder 22 to a predetermined depth through the bearing 28. The relative rotation angle of the bearing 28 can be changed in real time through the servo motor 24 to ensure that the ash cleaning unit 3 fully covers the coking area inside the fire channel 13 in the rotating scenario.

[0129] The second step is to control the gas equivalent flowing from the inlet end 36 to the outlet end 38 through the electromagnetic jet valve 35, and then quantitatively jet it to the predetermined area of ​​the fire channel 13 through the jet pipe 39. Through the coordinated cooperation between the upstream pressure tap 46 and the downstream pressure tap 47, the stable static pressure of the jet gas flow in the area of ​​the jet pipe port is collected in real time as a reference pressure for the jet process, realizing the technological leap from passive timed jet to active on-demand jet.

[0130] During this process, the elastic force of the extension spring 442 provides a relatively stable environment for the rubber plug ring 425 and the airflow inside the blowpipe 39. At the moment of air pressure fluctuation, the aforementioned environment is simultaneously fluctuated, causing a change in the relative displacement between the rubber plug ring 425 and the compensation ring 441 (relatively stationary). At this time, the branch pipe 424 drives the single-head wedge plate 421 to move synchronously through the branch ring 423, changing the relative interaction depth between the single-head wedge plate 421 and the single-head striker 414. The single-head striker 414 moves towards the axis of the double-opening cylinder 412 with a displacement corresponding to the aforementioned instantaneous fluctuation. Through the relative movement between the traction rod 416 and the snake groove 415 on the outer wall of the single-head striker 414, the relative rotation variable of the angle of the single-head striker 414 under the axial displacement scenario is simultaneously adjusted, driving the angle brush 418 to perform a through-scraping operation on the inner wall of the upstream pressure tap 46 or the downstream pressure tap 47, stabilizing the medium flow at the interface between the two and the blowpipe 39.

[0131] Step 3: By synchronizing the movement between the end ring 456 and the branch pipe 424, the relative interaction depth between the ball rod 457 and the spiral groove of the inner ring 452 is changed in real time. Furthermore, by unidirectional meshing between the roller 455 and the outer ring 451, the instantaneous fluctuations in air pressure within a predetermined cycle are recorded cumulatively until the ball rod 457 enters the straight groove from the spiral groove. At this instant, the single-sided gear 433 meshes synchronously with the single-sided rack 431 to reach a predetermined threshold, and the cam 434 squeezes the spring pressure rod 436. This serves as the air pressure fluctuation alarm benchmark for the current cycle.

[0132] At the instant the cue stick 457 enters the straight groove, the branch pipe 424, under the elastic restoring force of the extension spring 442, controls the single-headed wedge plate 421 to move to the initial position in a relatively short time, realizing the "instantaneous" relative reverse movement between the single-headed wedge plate 421 and the single-headed firing pin 414. The single-headed firing pin 414 controls the angle brush 418 to generate axial relative operation with the upstream pressure tap 46 or the downstream pressure tap 47 again. At the same time, the angle of the angle brush 418 under the aforementioned movement is changed again through the traction rod 416, thus forming synchronous rotation in the axial movement scenario of the angle brush 418.

[0133] Furthermore, the relative position between the compensation ring 441 and the high-temperature differential pressure tube 44 can be adjusted synchronously through the meshing between the driving gear 444 and the driven gear 445. That is, when the angle steel ring 446 rotates, it drives the compensation ring 441 to rotate through the guide rod 447 and provides it with guiding support, so as to smoothly realize the thread fit depth between the compensation ring 441 and the high-temperature differential pressure tube 44, thereby adjusting the current deformation of the telescopic spring 442. On the one hand, it can dynamically adapt to the different air pressure environment requirements of the blowpipe 39; on the other hand, it can moderately correct the relative balance force between the rubber plug ring 425, the compensation ring 441 and the external gas when the elasticity of the telescopic spring 442 decays, thereby further improving the accuracy of differential pressure acquisition.

[0134] Step 4: Drive the fully automatic telescopic rod 313 to rotate at a predetermined angle by the high-temperature resistant motor 312 until the corner rod 316 is directly opposite the blow pipe 39. Then, retract the corner seat 314 by the fully automatic telescopic rod 313 until the brush ring 317 enters the blow pipe 39. Finally, the dust accumulation in the port area of ​​the blow pipe 39 is removed by mechanical scraping with the corner scraper 318 and blown by the air plate 319, and the air pressure before and after the blow is stabilized.

[0135] The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.

[0136] The above are merely embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A calcining furnace with multi-point automatic cleaning function, comprising a calcining tank (1), characterized in that: A control unit (2) is provided on one side of the calcining tank (1), a dust removal unit (3) is provided on the side of the control unit (2) near gravity, and a pressure balancing unit (4) is provided outside the dust removal unit (3). The pressure balancing unit (4) includes: An angle plate (41) is set in the space on the side of the calcining tank (1) away from gravity; Angle bracket (42) is snapped onto the outer wall of the vertical section of the corner bracket (41); The base (43) is snapped into the middle of the end face of the corner bracket (42) near the corner joint plate (41); The high-temperature differential pressure tube (44) is snapped onto the inner arc surface of the base (43) away from the corner hanging plate (42); in addition, the inner corners of both ends of the high-temperature differential pressure tube (44) are rounded and smoothly processed. Alloy conduits (45) are arranged in pairs, symmetrically distributed, and the alloy conduits (45) are connected to the high-temperature differential pressure tube (44) by a plug-in snap-fit ​​installation. The upstream pressure tap (46) is plugged into and snapped onto the outer wall of the alloy conduit (45) at one end of the corner bracket (42); The downstream pressure tap (47) is plugged into and snapped onto the outer wall of another alloy conduit (45); A rod (411) is snapped onto the inner wall of the alloy conduit (45) away from the high-temperature differential pressure tube (44). A double-ended cylinder (412) is snapped onto the end of the rod (411) near the base (43). The double-ended cylinder (412) has a T-shaped cross-section. Gaskets (413) are arranged in an array on the inner wall of the horizontal section of the double-ended cylinder (412), with three gaskets (413) forming a group. The gasket (413) in the middle position is slidably snapped onto the inner wall of the double-ended cylinder (412), and the remaining two gaskets (413) are snapped onto the double-ended cylinder (412). A single-headed firing pin (414) is snapped onto the axial center of the gasket (413) in a through-type manner and is slidably snapped onto the remaining two gaskets (413). The single-headed striker (414) has a serpentine groove (415) on the outer wall of the end near the alloy guide tube (45). The double-opening cylinder (412) has a traction rod (416) that matches the serpentine groove (415) snapped onto the inner wall of the end near the alloy guide tube (45). The two gaskets (413) at the end away from the alloy guide tube (45) are snapped together with a return spring (417) sleeved on the outer wall of the traction rod (416). The single-headed striker (414) has a corner brush (418) snapped onto the outer wall of the end away from the alloy guide tube (45). The corner brush (418) has tapered ends in the axial direction. The cutter on the outer wall of the corner brush (418) is a quarter-cylindrical spiral surface. The double-opening cylinder (412) has a sealing ring (419) snapped onto the inner wall of the end away from the hanging rod (411) in the vertical section. The vertical section of the double-ended cylinder (412) is coaxially provided with a single-headed wedge plate (421) that is compatible with the single-headed firing pin (414). In addition, the shaft section of the single-headed wedge plate (421) passes through the sealing ring (419). The inner walls of both ends of the high-temperature differential pressure tube (44) are symmetrically snapped with screen rings (422). The end face of the screen ring (422) has screen openings evenly distributed. The outer wall of the shaft section of the single-headed wedge plate (421) is symmetrically snapped with support rings (423). The outer walls of the two support rings (423) in the same group are jointly snapped with support pipes (424). A rubber plug ring (425) that slides on the inner wall of the high-temperature differential pressure pipe (44) is snapped onto the outer wall of the branch pipe (424) near the single-headed wedge plate (421). A straight seat (426) is snapped onto the end of the single-headed wedge plate (421) away from the hanger (411). A pressure sensing ring (427) is snapped onto the end face of the rubber plug ring (425) near the screen ring (422). A limiting ring (428) that snaps onto the inner wall of the high-temperature differential pressure pipe (44) is provided on the side of the pressure sensing ring (427) away from the rubber plug ring (425). A single-sided rack (431) is snapped onto the inner wall of the vertical section of the straight seat (426). A double-insertion rotating rod (432) is rotatably fitted onto the middle position of the high-temperature differential pressure tube (44). The double-insertion rotating rod (432) is composed of two mutually rotating rods. A single-sided gear (433) is snapped onto the end of the double-insertion rotating rod (432) near the axis of the high-temperature differential pressure tube (44). The single-sided gear (433) meshes with the single-sided rack (431). A cam (434) is snapped onto the outer wall of both ends of the double-insertion rotating rod (432). An inner support ring (435) is symmetrically snapped onto the middle position of the high-temperature differential pressure tube (44). A spring pressure rod (436) that cooperates with the cam (434) is snapped onto the end face of the inner support ring (435) near the double-insertion rotating rod (432). A compensating ring (441) is slidably snapped onto the outer wall of the branch pipe (424) away from the rubber plug ring (425). Furthermore, the compensating ring (441) is threaded onto the inner wall of the high-temperature differential pressure pipe (44). A telescopic spring (442) fitted onto the outer wall of the branch pipe (424) is also snapped onto the compensating ring (441) and the rubber plug ring (425). A convex engagement ring (443) is symmetrically snapped onto the middle position of the high-temperature differential pressure pipe (44). The outer end face of the convex engagement ring (443) is rotated and fitted onto the branch pipe (424) via a rotating shaft. The device is equipped with a drive gear (444), and a driven gear (445) is provided on one side of the drive gear (444) and is rotatably fitted to the outer wall of the convex ring (443). An angle steel ring (446) is snapped onto the end of the driven gear (445) away from the convex ring (443). A guide rod (447) is symmetrically snapped onto the end face of the angle steel ring (446) away from the convex ring (443). The guide rod (447) passes through the compensation ring (441), has a T-shaped vertical section, and is slidably snapped onto the compensation ring (441). Two opposing engagement rings (443) are symmetrically arranged with an outer ring (451), which is snapped onto the inner wall of the high-temperature differential pressure pipe (44). An inner ring (452) is rotatably mounted on the outer ring (451) at its axis, and the inner wall of the inner ring (452) has a straight groove and a spiral groove that are connected to each other. A clutch tooth plate (453) is snapped onto the outer wall of the inner ring (452) in an array. 53) A corrugated sleeve (454) is snapped onto the inner wall of the vertical section, and the corrugated sleeve (454) has an inner support spring connected to the clutch tooth plate (453) inside. A roller (455) is rotatably installed on the end of the corrugated sleeve (454) away from the clutch tooth plate (453). An end ring (456) is snapped onto the end of the branch pipe (424) near the axis of the double-insertion rotating rod (432). A ball rod (457) is snapped onto the middle position of the outer wall of one side of the end ring (456).

2. A pot-type calcining furnace with multi-point automatic cleaning function according to claim 1, characterized in that: The calcining tank (1) is fitted with a furnace top (11) on the side away from gravity and a furnace bottom (12) on the side near gravity. The calcining tank (1) has fire channels (13) arranged in an array inside, with at least one. An observation hole (14) connected to the fire channel (13) is opened on the end face of the furnace top (11). A sealing door (15) is installed on the end face of the observation hole (14) away from gravity by bolts. Refractory bricks (16) are evenly stacked on the end face of the furnace top (11) away from gravity.

3. A pot-type calcining furnace with multi-point automatic cleaning function according to claim 2, characterized in that: The control unit (2) includes: The transfer trolley (21) is set on the side of the furnace top (11) away from gravity, and the transfer trolley (21) rolls with the end face of the furnace top (11) through rollers; The ash removal cylinder (22) is snapped onto the end face of the transfer trolley (21) away from the calcining tank (1); Two handrails (23) are installed symmetrically on the outer wall of the dust removal cylinder (22); The servo motor (24) is mounted on the end face of the ash cleaning cylinder (22) away from the calcining tube by means of a mounting bracket; Angle plate (25) is rotatably mounted on the outer wall of the output end of servo motor (24), and the angle plate (25) and the dust removal cylinder (22) are embedded and snap-fitted together; The electric telescopic rod (26) is snapped onto the output end of the servo motor (24); The central control panel (27) is snapped onto the end of the electric telescopic rod (26) away from the servo motor (24); The bearing seat (28) is snapped onto the end of the center console (27) away from the corner plate (25).

4. A pot-type calcining furnace with multi-point automatic cleaning function according to claim 3, characterized in that: The dust removal unit (3) includes: Multi-head seats (31) are arranged in groups of three, and are evenly distributed circumferentially on the end face of the bearing seat (28) away from the center console (27). In addition, the multi-head seats (31) are connected to the bearing seat (28) by ball joint. Angle plate (32) is snapped onto the end face of the three multi-head seats (31) in the same group on the side away from the shaft seat (28); The corner ball (33) is hinged to the end of the multi-head seat (31) away from the axle seat (28) and passes through the corner plate (32). The valve seat (34) is snapped onto the outer wall of the end of the ball (33) away from the shaft seat (28); The electromagnetic jet valve (35) is snap-fitted onto the end face of the valve seat (34) away from the shaft seat (28); in addition, the horizontal section of the corner plate (41) is located between the electromagnetic jet valve (35) and the valve seat (34), and is snap-fitted onto both of them. The air inlet end (36) is snapped onto the outer wall of one side of the electromagnetic jet valve (35); The exhaust port (37) is located on the side of the electromagnetic jet valve (35) away from the air inlet end (36), and the exhaust port (37) and the electromagnetic jet valve (35) are installed in a plug-in snap-fit ​​manner. The air outlet (38) is snapped onto the side of the electromagnetic jet valve (35) near gravity. The blow pipe (39) is installed in a plug-in snap-fit ​​configuration on the side of the air outlet (38) away from the valve seat (34).

5. A pot-type calcining furnace with multi-point automatic cleaning function according to claim 4, characterized in that: The blow pipe (39) is fitted with a sub-arc seat (311) on the outer wall of the side facing away from the high-temperature differential pressure pipe (44). A high-temperature motor (312) is fitted with the end of the sub-arc seat (311) near the valve seat (34). A fully automatic telescopic rod (313) that rotates and is assembled with the sub-arc seat (311) is fitted with the output end of the high-temperature motor (312). An angle seat (314) is fitted with the end of the fully automatic telescopic rod (313) facing away from the valve seat (34). A blocking chamber (315) is rotatably fitted with the end of the angle seat (314) facing away from the valve seat (34). The blocking chamber (315) has a built-in gear set. The end of the blocking chamber (315) away from the corner seat (314) is fitted with a corner rod (316) through a rotating shaft. A brush ring (317) is snapped onto the outer wall of the corner rod (316). An angle shovel (318) is snapped onto the outer wall of the brush ring (317) in a circumferentially uniform manner. The angle shovel (318) is inclined to the outer wall of the brush ring (317). An air plate (319) is snapped onto the end of the angle shovel (318) near the axis of the brush ring (317). The blowing direction of the air plate (319) is tangent to the surface of the angle shovel (318).

6. A self-cleaning and pressure monitoring method for dual pressure taps inside the spray gun tube in an intelligent injection system, employing a multi-point automatic cleaning function of a tank-type calcining furnace as described in any one of claims 1-5 to achieve self-cleaning and maintain pressure balance, characterized in that: The specific steps are as follows: S1: After manually observing and judging the coking state of the fire channel (13), the cleaning cylinder (22) is moved to the top of the target fire channel (13) by the transfer trolley (21). The electric telescopic rod (26) drives the cleaning unit (3) and the air pressure balance unit (4) to descend to the predetermined depth. The servo motor (24) drives the shaft seat (28) to rotate, so as to realize the full coverage of the coking on the inner wall of the fire channel (13) by the cleaning unit (3). S2: The electromagnetic jet valve (35) controls the amount of jet gas, and the jet pipe (39) completes the quantitative jetting; and through the upstream and downstream pressure taps (47) to collect static pressure, the upgrade from passive timed jetting to active on-demand jetting is realized. When the air pressure fluctuates, the telescopic spring (442) drives the rubber plug ring (425) and the compensation ring (441) to generate relative displacement, triggering the single-headed striker (414) to move axially and rotate, driving the angle brush (418) to scrape off the dust accumulated on the inner wall of the pressure tap, and stabilizing the medium flow rate; S3: The end ring (456) and the branch pipe (424) move synchronously. The ball rod (457) accumulates and records the air pressure fluctuation in the spiral groove. When the threshold is reached, the meshing between the single-sided gear (433) and the single-sided rack (431) is triggered. The cam (434) squeezes the spring rod to issue an alarm. After the ball rod (457) enters the straight groove, the telescopic spring (442) drives the one-way wedge plate to reset. The single-headed striker (414) drives the angle brush (418) to scrape axially again and rotate. The drive gear (444) drives the compensation ring (441) to rotate, adjust the spring deformation, adapt to different air pressure environments and correct elastic decay, and improve the differential pressure acquisition accuracy. S4: The high-temperature resistant motor (312) drives the telescopic rod to rotate, so that the angle rod (316) is aligned with the blow pipe (39). The fully automatic telescopic rod (313) retracts to allow the brush ring (317) to enter the pipe. The corner shovel (318) mechanically scrapes away the dust accumulated on the inner wall of the blow pipe (39) with the help of the air plate (319) to blow, and stabilizes the air pressure before and after blowing.

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