A method and device for cleaning the interior of a DCB sintering furnace

Abstract

The invention discloses a method and a cleaning device for cleaning the interior of a DCB sintering furnace, and specifically relates to the technical field of sintering furnaces. The joint is connected to an air inlet of a turbine fan, and a metal pulley is rotatably installed at the bottom of the dust suction end of the dust suction pipe. The method has obvious effects on improving the undesirable effects such as bulges on the surface of products, and can clean the interior of the furnace at high temperature, thereby improving production efficiency, improving product quality, and simultaneously increasing the service life of the sintering furnace; by oxidizing the mesh belt in advance, the oxidation time after the mesh belt is replaced is greatly saved, thereby improving production efficiency; by a screening mechanism, the impurity particles intercepted thereon are shaken to avoid accumulation and clogging of the filter plate, thereby affecting the filtering effect, and avoiding affecting the separation between the impurity particles and water, thereby being more convenient to use and more practical; by a water circulation mechanism, it can be linked with the screening mechanism to improve power utilization, and can achieve water circulation to cool down the high-temperature particles and the dust collecting bucket, and can withstand the impact of high-temperature particles.

Description

Technical Field

[0001] The invention relates to the technical field of sintering furnaces, and in particular to a method and a device for cleaning the interior of a DCB sintering furnace. Background Art

[0002] DCB board is a ceramic copper-clad board. DCB refers to a special process in which copper foil is directly bonded to the surface (single or double sides) of an aluminum oxide (Al2O3) or aluminum nitride (AlN) ceramic substrate at high temperature. The ultra-thin composite substrate has excellent electrical insulation properties, high thermal conductivity, excellent soft solderability and high adhesion strength. It can be etched with various patterns like a PCB board and has a large current carrying capacity. The sintering furnace is required in the production process of DCB boards. The sintering furnace used in the field of ceramic copper cladding is a device that heats multiple temperature zones and cooperates with the corresponding gas atmosphere to sinter copper sheets and ceramic sheets together. It generally includes a feeding area, a muffle area, a cooling area, etc.

[0003] During the sintering process of DCB board using sintering furnace, various defects will be produced, such as bubbles, wrinkles, bulges, pits, color difference, etc. After long-term practical verification, the cause of surface bulge is the most clear. In the final analysis, it is because foreign matter is introduced and falls on the surface of the product, resulting in uneven surface, which looks like small bulges. According to the results of elemental analysis, the bulges may come from the copper sheet itself, organic pollutants and furnace residues, and the latter accounts for the largest proportion. In order to solve this problem, it is necessary to regularly and thoroughly maintain the inside of the furnace. Therefore, how to thoroughly clean the inside of the furnace becomes a key factor in determining the yield and quality of the product. The operating temperature of the high temperature zone of the normal sintering furnace reaches more than 1000℃. The conventional maintenance and cleaning method in the industry is to reduce the furnace temperature to room temperature before operation. Frequently cooling the furnace to room temperature is not only time-consuming, but also greatly reduces the life of the furnace. It also affects the use of the sintering furnace and reduces production efficiency. Summary of the invention

[0004] The object of the present invention is to provide a method and a device for cleaning the interior of a DCB sintering furnace to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for cleaning the interior of a DCB sintering furnace, using a sintering furnace interior cleaning device to clean the inner wall of the sintering furnace, and stipulates that the frequency of minor maintenance is once / 3 months, and the main contents are: cooling to 800°C, mainly including high-temperature dust collection, etc.; the frequency of major maintenance is once / year, and the main contents are: cooling to room temperature, mainly including furnace bottom plate maintenance, furnace interior cleaning, and mesh belt replacement.

[0006] Further, major maintenance and minor maintenance include the following steps:

[0007] S1: First, the sintering furnace to be cleaned is cooled down, and when the temperature starts to drop, the oxygen and nitrogen are stopped;

[0008] S2: When the internal temperature of the sintering furnace is reduced to 800°C, a fence is set up around the equipment;

[0009] S3: Then use the cleaning device to directly vacuum the furnace. At the same time, the high-temperature particles will be cooled and taken away by the water circulation system. At this time, the minor maintenance is over, and the preparations before resuming production can be carried out according to steps S18-S24:

[0010] S4: When the sintering furnace is undergoing major maintenance, it should be cooled to room temperature and enclosures should be set up around the equipment;

[0011] S5: Then cut the mesh belt and drag out both ends of it;

[0012] S6: Then, a cleaning device is inserted into the furnace to suck out foreign matter;

[0013] S7: Pull the furnace bottom plate out of the furnace;

[0014] S8: Arrange the furnace bottom plates in order, and then wipe the front and back of the furnace bottom plates repeatedly with a dust-free cloth dipped in water;

[0015] S9: After wiping, clean off the raised parts on the furnace floor;

[0016] S10: then placing the partially incompletely oxidized furnace bottom plate and the new furnace bottom plate to be replaced into a muffle furnace for oxidation treatment;

[0017] S11: Use the turbine fan in the cleaning device to cooperate with the joint through the dust suction pipe to extend into the furnace for dust suction. At this time, when using the special dust suction joint for normal temperature to clean the inside of the furnace, since the material of the joint is relatively soft, an iron rod is used to support it when cleaning deep inside the furnace;

[0018] S12: Open the nitrogen gas to the maximum to purge the inside of the furnace;

[0019] S13: Use a steel brush to scrub the inner top of the furnace and use a sweeping device to vacuum it to clean it;

[0020] S14: Perform the same cleaning process on the other side of the furnace according to the above steps;

[0021] S15: Use a cleaning device to vacuum the bottom of the furnace and clean it:

[0022] S16: After the furnace bottom plate is oxidized, install it back into the furnace;

[0023] S17: The mesh belt is installed;

[0024] S18: Clean the area around the device using a dust-free cloth dipped in water or alcohol, or a vacuum cleaner.

[0025] S19: Remove the fence around the equipment;

[0026] S20: Use a tester to test the particle size of the environment around the equipment to ensure that it meets the clean room standards;

[0027] S21: Confirm the cleaning effect of the furnace: visual inspection + strong flashlight confirmation, requiring no obvious dust in the furnace, at this time the major maintenance is over;

[0028] S22: Start the furnace to heat up;

[0029] S23: After each temperature zone reaches the set value, the temperature curve is pulled to ensure that the temperature curve is normal;

[0030] S24: Start trial production and monitor the surface condition and peel strength of the product in the early stage.

[0031] Furthermore, the mesh belt in step S17 involves a method for oxidizing the mesh belt in advance, comprising the following steps:

[0032] S17.1 mesh belt oxidation furnace replacement oxidation belt process:

[0033] a) Turn off the mesh belt running switch to ensure that the conveyor belt stops running;

[0034] b) Roll the new mesh belt counterclockwise onto the No. 2 transmission wheel, cut the old mesh belt, and connect the upper end to the new mesh belt;

[0035] c) Use the handle to shake the driving wheel device, roll the lower end of the old mesh belt counterclockwise onto the No. 1 transmission wheel, turn on the switch of the external transmission system, wait for the old mesh belt to be completely wound, and turn off the transmission switch;

[0036] d) Disconnect the connection between the old and new mesh belts, then connect the upper and lower ends of the new mesh belt, and move the external guide rail until the mesh belt is straightened;

[0037] S17.2 mesh belt oxidation furnace startup process:

[0038] a) Open the air inlet valve, water inlet valve and water outlet valve;

[0039] b) Press the power switch, the equipment is powered on, the power indicator light comes on, and all temperature controllers are powered on and displayed;

[0040] c) Setting temperature parameters using a computer system;

[0041] d) Press the mesh belt button, set the mesh belt speed, and the mesh belt starts running;

[0042] e) Press the heating button and the furnace starts to heat up;

[0043] f) When ventilating, first open the gas source switch at the rear of the equipment, adjust the pressure reducing valve to the working pressure, and finally adjust each flow meter to the working flow;

[0044] g) When any temperature zone rises to 400℃, turn on the cooling switch to supply cooling air.

[0045] Furthermore, the joint is connected with the air inlet of the turbine fan, and a metal pulley is rotatably installed at the bottom of the dust suction end of the dust suction pipe, the bottom of the turbine fan is provided with a base, and universal wheels are symmetrically provided at the bottom of the base, a cyclone separator and a filter cartridge are provided on the left and right sides of the base in sequence, and seven layers of high-temperature resistant filter bags are provided on the top and bottom of the filter cartridge in sequence, a dust collecting bucket is provided below the cyclone separator on the top of the base, a screening mechanism is provided in the dust collecting bucket, a water circulation mechanism connected to the screening mechanism is provided between the cyclone separator and the filter cartridge, the air outlet of the turbine fan is connected with the feed port of the cyclone separator through a feed pipe, and the top discharge port of the cyclone separator is connected with the top of the filter cartridge through a discharge pipe, the screening mechanism includes a filter plate, and the filter plate is arranged in the dust collecting bucket, a partition is fixedly installed below the filter plate in the dust collecting bucket, a crankshaft 1 is rotatably installed below the partition in the dust collecting bucket, one end of the crankshaft 1 is connected with a motor at the rear of the dust collecting bucket, and the outer surface of the crankshaft 1 The side sleeve is provided with a connecting piece, the other end of the connecting piece is movably connected with a push rod, and the upper end of the push rod is fixedly connected to the bottom of the filter plate, the outer side of the push rod is symmetrically provided with an L frame, the L frame is rotatably installed with a gear one in the dust collecting bucket relative to the outer side, and the outer wall of the L frame is provided with a tooth groove one meshing with the gear one, the outer wall of the connecting shaft of the gear one is sleeved with a local gear, one side of the local gear is provided with a support rod, and the side wall of the support rod is provided with a tooth groove two matched with the local gear, the upper end of the support rod is connected to the bottom of the filter plate, and a sliding rod is symmetrically provided on the inner side of the dust collecting bucket at the bottom of the partition, the sliding rod is sleeved with a slider on the outer side of the sliding rod, and the slider is fixedly connected to the support rod, and a spring is sleeved on the outer side of the sliding rod under the slider, and the filter plate can be continuously driven to shake up and down through the screening mechanism, and the knocking head can continuously hit the filter plate to vibrate, thereby realizing the screening of impurities such as dust collected on the filter plate in the dust collecting bucket in the furnace, avoiding accumulation and blockage, thereby affecting the separation of water and impurities.

[0046] Furthermore, the water circulation mechanism includes a crankshaft 2, and two crankshafts 2 are provided. The two crankshafts 2 are rotatably installed at the rear of the dust collecting bucket through a support frame, and the two crankshafts 2 are connected at one end on the inner side thereof, and the crankshaft 2 is connected at one end on the outer side thereof with a bevel gear 3. The outer side of the motor output end is sleeved with a bevel gear 4 meshing with the bevel gear 3. The outer side of the crankshaft 2 is sleeved with a connecting piece 2, and one end of the connecting piece 2 is movably connected with a push rod 2. Two pump barrels are provided between the dust collecting bucket and the filter barrel. One end of the push rod is connected with a piston in the pump barrel, one end of each of the pump barrels is connected with a connecting pipe with a second one-way valve, one side of the dust collecting bucket is provided with a water distribution pipe with a first one-way valve between the partition and the filter plate, and the water distribution pipes are respectively connected with the two pump barrels, a water distribution ring is provided between the cyclone separator and the dust collecting bucket, and a plurality of inclined nozzles are provided on the inner wall of the water distribution ring, one end of the connecting pipe close to the dust collecting bucket is connected with the water distribution ring, and one end of the connecting pipe away from the dust collecting bucket is connected with a cooling pipe two, and the cooling pipe is connected with the cooling pipe. The cooling tube second is arranged on the outside of the discharge pipe, and the outer wall of the discharge pipe is provided with a cooling box on the outside of the cooling tube second, and the side wall of the dust collecting bucket is provided with a cavity, and a refrigeration layer is arranged on one side of the cavity, and a cooling tube one is arranged on the side of the refrigeration layer close to the inner wall of the dust collecting bucket, and the cooling tube one is located in the cavity, and a lower end of the cooling tube is connected with one end of the cooling tube two, and an upper end of the cooling tube one is connected with the dust collecting bucket, and the water circulation mechanism can be connected with the screening mechanism to improve the power utilization rate, and at the same time, the piston can be driven to move to push water into the water distribution ring and the cooling tube two respectively, and the large particle impurities separated by the cyclone separator can be cooled by the nozzle on the water distribution ring, and the cooling tube two is used to cool the smaller particles to avoid damage to the high temperature resistant filter bag, and the water in the cooling tube two will be transmitted to the dust collecting bucket of the cooling tube one and water-cooled, and then it will be re-guided to the dust collecting bucket for recycling and reuse, forming a water circulation mechanism, and at the same time, the cooling of the dust collecting bucket is improved in conjunction with the refrigeration layer, so that it can withstand the impact of high temperature particles.

[0047] Furthermore, a gear 2 is rotatably installed on the inner wall of the dust collecting bucket on the inner side of the L frame, a tooth groove 3 is opened on the inner wall of the L frame and meshes with the gear 2, a bevel gear 1 is sleeved on the outer wall of the connecting shaft of the gear 2, a rotating rod is rotatably installed on the bottom of the partition, and the lower end of the rotating rod passes through the top of the L frame and is further connected with a bevel gear 2, and the bevel gear 2 is meshed with the bevel gear 1, and a stirring rod is symmetrically provided on the upper end of the rotating rod between the partition and the filter plate, so as to be linked with the screening mechanism, continuously drive the rotating rod to drive the stirring rod to rotate forward and reverse, stir the water, and accelerate its heat dissipation and cooling.

[0048] Furthermore, guide rods are symmetrically provided at the bottom of the filter plate, guide blocks are sleeved on the outer side of the guide rods, and the guide blocks are fixedly connected to the inner wall of the dust collecting bucket, and the guide blocks are slidably connected to the guide rods to support and guide the filter plate and improve its movement stability.

[0049] Furthermore, the rotating rod is rotatably connected to the partition through a bearing, and the rotating rod is slidably connected to the L frame so as to support and position the rotating rod without affecting its own rotation.

[0050] Furthermore, one end of the connecting member is rotationally connected to the crankshaft, and the other end of the connecting member is hingedly connected to the push rod to transmit power.

[0051] Furthermore, the cooling pipe 2 and the cooling pipe 1 are both distributed in a spiral form, and the plurality of nozzles are distributed in a circular equidistant array. One end of the connecting piece 2 is rotatably connected to the crankshaft 2, and the push rod 2 is hingedly connected to the connecting piece 2. A sealing ring is provided between the outer wall of the piston and the inner wall of the pump barrel to transmit power and improve the sealing between the piston and the pump barrel, so as to increase the residence time of water and improve the cooling effect.

[0052] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0053] 1. The present invention has formulated a complete set of detailed processes for the maintenance of the sintering furnace, including small maintenance at high temperature and large maintenance at room temperature. After long-term practical verification, this method has obvious effects on improving the undesirable effects such as surface protrusions of products. The furnace can be cleaned at high temperature (800°C), which can improve production efficiency, improve product quality, and increase the life of the sintering furnace; by oxidizing the mesh belt in advance, the oxidation time after the mesh belt is replaced is greatly saved, and the production efficiency is improved; detailed steps for quickly resuming normal production after furnace maintenance are formulated, which can ensure that furnace maintenance will not have a negative impact on product quality. ; By providing a screening mechanism, the motor can be started to drive the crankshaft to rotate, and the connecting piece can be continuously driven to drive the push rod to push and pull the filter plate up and down. At the same time, when the L frame moves synchronously with the push rod, the driving gear and the local gear rotate synchronously, so that the local gear drives the support rod to move upward and downward, so that the support rod can continuously push the knocking head and the filter plate to collide, so that the filter plate can shake up and down and vibrate itself, thereby shaking the impurity particles intercepted on it, avoiding their accumulation and clogging the filter plate, thereby affecting its filtering effect, and avoiding affecting the separation between the impurity particles and water. It is more convenient to use and more practical.

[0054] 2. The present invention can be linked with the screening mechanism through the water circulation mechanism to improve the power utilization rate, so that it can drive the two connecting parts to rotate through the meshing of the crankshaft 2 and the bevel gear 3, so that the crankshaft 2 drives the connecting part 2 to move, which can continuously push and pull the push rod 2, so that the push rod 2 drives the piston to move synchronously in the pump barrel, and the water in the dust collecting bucket is distributed to the two pump barrels under the action of the water distribution pipe, and the water is guided to the connected connecting pipe under the push of the piston, so that the water is respectively guided to the water distribution ring and the cooling pipe 2, and the larger impurity particles separated are sprayed out through the nozzle on the water distribution ring. The water is collected and recycled after being cooled and brought to the dust collecting bucket and separated from the impurity particles by the filter plate. At the same time, the cooling pipe 2 will cool the smaller particles in the discharge pipe and guide them to the filter cartridge for filtration through the high-temperature resistant filter bag to avoid damage to the high-temperature resistant filter bag due to its high temperature. At the same time, the water passing through the cooling pipe 2 will be guided to the cooling pipe 1 to cool the dust collecting bucket, and cooperate with the refrigeration layer to improve the cooling effect on the dust collecting bucket, so that it can withstand the impact of high-temperature particles, and the water guided to the cooling pipe 1 will be redirected to the dust collecting bucket for recycling, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0056] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0057] Figure 2 It is a schematic diagram of the structure between the pump barrel, the motor and the dust collection bucket of the present invention;

[0058] Figure 3 It is a schematic diagram of the internal structure of the dust collecting bucket of the present invention;

[0059] Figure 4 It is a structural schematic diagram of the water distribution ring of the present invention;

[0060] Figure 5 The present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0061] Figure 6 It is a schematic diagram of the local structure between the L frame and the support rod of the present invention;

[0062] Figure 7 It is a schematic diagram of the structure between the connecting member 1 and the push rod 1 of the present invention;

[0063] In the figure: 1, base; 2, turbo fan; 3, cyclone separator; 4, filter cartridge; 5, high temperature resistant filter bag; 6, dust collecting bucket; 7, joint; 8, dust suction pipe; 9, feed pipe; 10, discharge pipe; 11, filter plate; 12, partition; 13, crankshaft 1; 14, motor; 15, connector 1; 16, push rod 1; 17, L frame; 18, gear 1; 19, local gear; 20, support rod; 21, knock head; 22, gear 2; 23 , bevel gear one; 24, rotating rod; 25, bevel gear two; 26, stirring rod; 27, guide rod; 28, guide block; 29, sliding rod; 30, sliding block; 31, spring; 32, refrigeration layer; 33, cooling pipe one; 34, crankshaft two; 35, bevel gear three; 36, bevel gear four; 37, connecting piece two; 38, push rod two; 39, pump barrel; 40, piston; 41, water distribution ring; 42, cooling pipe two; 43, cooling box; 44, water distribution pipe. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] like Figure 1 - Figure 7 A method for cleaning the interior of a DCB sintering furnace is shown, using a sintering furnace interior cleaning device to clean the inner wall of the sintering furnace, and the frequency of minor maintenance is once every three months, the main content is: cooling to 800°C, mainly including high-temperature dust collection, etc.; the frequency of major maintenance is once a year, the main content is: cooling to room temperature, mainly including furnace bottom plate maintenance, furnace interior cleaning, mesh belt replacement, etc.; major maintenance and minor maintenance include the following steps:

[0066] S1: First, the sintering furnace to be cleaned is cooled down, and when the temperature starts to drop, the oxygen and nitrogen are stopped;

[0067] S2: When the internal temperature of the sintering furnace is reduced to 800°C, a fence is set up around the equipment;

[0068] S3: Then use the cleaning device to directly vacuum the furnace. At the same time, the high-temperature particles will be cooled and taken away by the water circulation system. At this time, the minor maintenance is over, and the preparations before resuming production can be carried out according to steps S18-S24:

[0069] S4: When the sintering furnace is undergoing major maintenance, it should be cooled to room temperature and enclosures should be set up around the equipment;

[0070] S5: Then cut the mesh belt and drag out both ends of it;

[0071] S6: Then, a cleaning device is inserted into the furnace to suck out foreign matter;

[0072] S7: Drag the furnace bottom plate out of the furnace (if it is a chimeric structure, it can be directly pulled out, if not, use a special hook to drag the furnace bottom plate out);

[0073] S8: Arrange the furnace bottom plates in order, and then wipe the front and back of the furnace bottom plates repeatedly with a dust-free cloth dipped in water;

[0074] S9: After wiping, clean off the raised parts on the furnace floor;

[0075] S10: then placing the partially incompletely oxidized furnace bottom plate and the new furnace bottom plate to be replaced into a muffle furnace for oxidation treatment;

[0076] S11: Use the turbine fan in the cleaning device to cooperate with the joint through the dust suction pipe to extend into the furnace for dust suction. At this time, when using the special dust suction joint for normal temperature to clean the inside of the furnace, since the material of the joint is relatively soft, an iron rod is used to support it when cleaning deep inside the furnace;

[0077] S12: Open the nitrogen gas to the maximum to purge the inside of the furnace;

[0078] S13: Use a steel brush to scrub the inner top of the furnace and use a sweeping device to vacuum it to clean it;

[0079] S14: Perform the same cleaning process on the other side of the furnace according to the above steps;

[0080] S15: Use a cleaning device to vacuum the bottom of the furnace and clean it:

[0081] S16: After the furnace bottom plate is oxidized, it is installed back into the furnace (or a new oxidized furnace bottom plate is used);

[0082] S17: The mesh belt is installed. Note: At this time, the new mesh belt that has been oxidized in advance is replaced. Here is a method for oxidizing the mesh belt in advance, which is described in detail as follows:

[0083] The process of replacing the oxidation belt in the mesh belt oxidation furnace:

[0084] a) Turn off the mesh belt running switch to ensure that the conveyor belt stops running;

[0085] b) Roll the new mesh belt counterclockwise onto the No. 2 transmission wheel, cut the old mesh belt, and connect the upper end to the new mesh belt;

[0086] c) Use the handle to shake the driving wheel device, roll the lower end of the old mesh belt counterclockwise onto the No. 1 transmission wheel, turn on the switch of the external transmission system, wait for the old mesh belt to be completely wound, and turn off the transmission switch;

[0087] d) Disconnect the connection between the old and new mesh belts, then connect the upper and lower ends of the new mesh belt, and move the external guide rail until the mesh belt is straightened;

[0088] S17.2 mesh belt oxidation furnace startup process:

[0089] a) Open the air inlet valve, water inlet valve and water outlet valve;

[0090] b) Press the power switch, the equipment is powered on, the power indicator light comes on, and all temperature controllers are powered on and displayed;

[0091] c) Setting temperature parameters using a computer system;

[0092] d) Press the mesh belt button, set the mesh belt speed, and the mesh belt starts running;

[0093] e) Press the heating button and the furnace starts to heat up;

[0094] f) When ventilating, first open the gas source switch at the rear of the equipment, adjust the pressure reducing valve to the working pressure, and finally adjust each flow meter to the working flow;

[0095] g) When any temperature zone rises to 400°C, turn on the cooling switch to supply cooling air;

[0096] Note: When the equipment is used for the first time or used again after long-term storage, it needs to be baked;

[0097] S18: Clean the area around the device using a dust-free cloth dipped in water or alcohol, or a vacuum cleaner.

[0098] S19: Remove the fence around the equipment;

[0099] S20: Use a tester to test the particle size of the environment around the equipment to ensure that it meets the clean room standards;

[0100] S21: Confirm the cleaning effect of the furnace: visual inspection + strong flashlight confirmation, requiring no obvious dust in the furnace (recorded in the sintering furnace maintenance effect confirmation table), at this time the major maintenance has been completed;

[0101] S22: Start the furnace to heat up;

[0102] S23: After each temperature zone reaches the set value, the temperature curve is pulled to ensure that the temperature curve is normal;

[0103] S24: Start trial production and monitor the surface condition and peel strength of the product in the early stage.

[0104] In this example, the joint 7 is connected to the air inlet of the turbine fan 2, a metal pulley is rotatably installed at the bottom of the dust suction end of the dust suction pipe 8, a base 1 is provided at the bottom of the turbine fan 2, and universal wheels are symmetrically provided at the bottom of the base 1. A cyclone separator 3 and a filter cartridge 4 are provided on the left and right sides of the base 1 in sequence, and seven layers of high-temperature resistant filter bags 5 are provided on the top and bottom of the filter cartridge 4 in sequence. A dust collecting bucket 6 is provided below the cyclone separator 3 at the top of the base 1, and a screening mechanism is provided in the dust collecting bucket 6. A water circulation mechanism connected to the screening mechanism is provided between the cyclone separator 3 and the filter cartridge 4. The air outlet of the turbine fan 2 is connected to the feed port of the cyclone separator 3 through the feed pipe 9, and the top discharge port of the cyclone separator 3 is connected to the top of the filter cartridge 4 through the discharge pipe 10. The screening mechanism includes a filter plate 11, and the filter plate 11 is arranged in the dust collecting bucket 6. A partition 12 is fixedly installed below the filter plate 11 in the dust collecting bucket 6. A crankshaft 13 is rotatably installed below the partition 12 in the dust collecting bucket 6. One end of the crankshaft 13 is connected to a motor 14 at the rear of the dust collecting bucket 6. A connecting piece 15 is sleeved on the outer side of the crankshaft 13. The connecting piece 15 is also One end is movably connected with a push rod 16, and the upper end of the push rod 16 is fixedly connected to the bottom of the filter plate 11, and an L frame 17 is symmetrically arranged on the outside of the push rod 16. A gear 18 is rotatably installed in the dust collecting bucket 6 relative to the outside of the L frame 17, and a tooth groove 1 meshing with the gear 18 is provided on the outer wall of the L frame 17. A local gear 19 is sleeved on the outer wall of the connecting shaft of the gear 18. A support rod 20 is provided on one side of the local gear 19, and a tooth groove 2 adapted to the local gear 19 is provided on the side wall of the support rod 20. The upper end of the support rod 20 is fixed to the filter plate 11. A knocking head 21 is connected to the bottom, and a sliding rod 29 is symmetrically provided on the inner side of the dust collecting bucket 6 at the bottom of the partition 12. A sliding block 30 is sleeved on the outer side of the sliding rod 29, and the sliding block 30 is fixedly connected to the support rod 20. A spring 31 is sleeved on the outer side of the sliding rod 29 under the sliding block 30. Through the screening mechanism, the filter plate 11 can be continuously driven to shake up and down, and the knocking head 21 can continuously hit the filter plate 11 to vibrate, thereby realizing the screening of dust and other impurities collected in the furnace on the filter plate 11 in the dust collecting bucket 6, avoiding accumulation and blockage, thereby affecting the separation of water and impurities.In this example, the water circulation mechanism includes a crankshaft 2 34, and there are two crankshafts 2 34. The two crankshafts 2 34 are rotatably installed at the rear of the dust collecting bucket 6 through a support frame, and the two crankshafts 2 34 are connected at one end on the inner side, and the crankshaft 2 34 is connected at one end on the outer side with a bevel gear 35. The outer side of the output end of the motor 14 is sleeved with a bevel gear 4 36 meshing with the bevel gear 35, and the outer side of the crankshaft 2 34 is sleeved with a connecting piece 2 37, and one end of the connecting piece 2 37 is movably connected with a push rod 2 38. Two pump barrels 39 are provided between the dust collecting bucket 6 and the filter cartridge 4. The push rod 2 One end of the pump barrel 38 is connected to a piston 40 in the pump barrel 39, one end of the two pump barrels 39 is connected to a connecting pipe with a one-way valve 2, a water distribution pipe 44 with a one-way valve 1 is provided between the partition 12 and the filter plate 11 on one side of the dust collecting bucket 6, and the water distribution pipe 44 is respectively connected to the two pump barrels 39, a water distribution ring 41 is provided between the cyclone separator 3 and the dust collecting bucket 6, and a plurality of inclined nozzles are provided on the inner wall of the water distribution ring 41, one end of the connecting pipe close to the dust collecting bucket 6 is connected to the water distribution ring 41, and one end of the connecting pipe away from the dust collecting bucket 6 is connected to the cooling pipe 2 42, The second cooling pipe 42 is sleeved on the outside of the discharge pipe 10, and a cooling box 43 is sleeved on the outer wall of the discharge pipe 10 on the outside of the second cooling pipe 42. A cavity is opened on the side wall of the dust collecting bucket 6, and a refrigeration layer 32 is provided on one side of the cavity. A cooling pipe 1 33 is provided on the side of the refrigeration layer 32 close to the inner wall of the dust collecting bucket 6, and the cooling pipe 1 33 is located in the cavity. The lower end of the cooling pipe 1 33 is connected to one end of the second cooling pipe 42, and the upper end of the cooling pipe 1 33 is connected to the dust collecting bucket 6. Through the water circulation mechanism, it can be connected to the screening mechanism to improve the power utilization rate, and at the same time, the piston 40 can be driven to move The water is pushed into the water distribution ring 41 and the cooling pipe 2 42 respectively, and sprayed out through the nozzle on the water distribution ring 41 to cool the large particles of impurities separated by the cyclone separator 3. At the same time, the cooling pipe 2 42 is used to cool the smaller particles to avoid damage to the high-temperature resistant filter bag 5. The water in the cooling pipe 2 42 will be transmitted to the cooling pipe 1 33 to cool the dust collecting bucket 6 with water, and then it will be re-guided to the dust collecting bucket 6 for recycling and reuse, forming a water circulation. At the same time, the cooling of the dust collecting bucket 6 is improved in cooperation with the refrigeration layer 32 so that it can withstand the impact of high-temperature particles. In this example, a gear 22 is rotatably installed on the inner wall of the dust collecting bucket 6 on the inner side of the L frame 17, a tooth groove 3 is opened on the inner wall of the L frame 17 and meshes with the gear 22, a bevel gear 1 23 is sleeved on the outer wall of the connecting shaft of the gear 22, a rotating rod 24 is rotatably installed on the bottom of the partition 12, and the lower end of the rotating rod 24 passes through the top of the L frame 17 and is further connected with a bevel gear 25, and the bevel gear 25 is meshed with the bevel gear 1 23, and a stirring rod 26 is symmetrically provided on the upper end of the rotating rod 24 between the partition 12 and the filter plate 11, so as to be linked with the screening mechanism, continuously drive the rotating rod 24 to drive the stirring rod 26 to rotate forward and reverse, stir the water, and accelerate its heat dissipation and cooling.In this example, a guide rod 27 is symmetrically provided at the bottom of the filter plate 11, and a guide block 28 is sleeved on the outside of the guide rod 27, and the guide block 28 is fixedly connected to the inner wall of the dust collecting bucket 6, and the guide block 28 is slidably connected to the guide rod 27, so as to support and guide the filter plate 11 and improve its moving stability. In this example, one end of the connecting member 2 37 is rotatably connected to the crankshaft 2 34, the push rod 2 38 is hingedly connected to the connecting member 2 37, and a sealing ring is sleeved between the outer wall of the piston 40 and the inner wall of the pump barrel 39 to transmit power and improve the sealing between the piston 40 and the pump barrel 39. In this example, the rotating rod 24 is rotatably connected to the partition 12 through a bearing, and the rotating rod 24 is slidably connected to the L frame 17 to support and position the rotating rod 24 without affecting its own rotation. In this example, one end of the connecting member 15 is rotatably connected to the crankshaft 13, and the other end of the connecting member 15 is hingedly connected to the push rod 16 to transmit power. In this example, cooling tube 2 42 and cooling tube 1 33 are both arranged in a spiral distribution form, and a plurality of nozzles are arranged in a circumferentially equidistant array to increase the retention time of water and improve the cooling effect.

[0105] Working principle of the present invention: when the device is used for cleaning, the dust in the furnace is sucked by starting the turbine fan 2 in conjunction with the joint 7 and the dust suction pipe 8, and the dust impurities and dust are guided to the cyclone separator 3 through the feed pipe 9 for separation, and the smaller particles are guided to the filter cartridge 4 through the discharge pipe 10 and filtered by the high temperature resistant filter bag 5. At the same time, the motor 14 is started to drive the crankshaft 13 to rotate, so that the crankshaft 13 drives the connecting piece 15, and then the connecting piece 15 continuously pushes and pulls the push rod 16, thereby driving The filter plate 11 moves up and down, and at the same time, the push rod 16 drives the L frame 17 to move up and down synchronously, so that the L frame 17 drives the gear 18 meshing with it and then drives the local gear 19 to rotate, so that the local gear 19 drives the meshing support rod 20 on one side to move up and down intermittently, thereby continuously pushing the knocking head 21 to move up and down, so that the knocking head 21 continuously hits the filter plate 11 and vibrates, thereby shaking the impurity particles thereon to avoid accumulation and blockage affecting its filtering effect. At the same time as the filter plate 11 moves up and down, it drives the guide rod 27 to move synchronously; the motor 14 The start of the bevel gear 4 36 drives the bevel gear 3 35 meshing with it to rotate, thereby driving the two crankshafts 2 34 to rotate synchronously, so that the crankshaft 2 34 drives the connecting piece 2 37, so that the connecting piece 2 37 continuously pushes and pulls the push rod 2 38, so that the push rod 2 38 drives the piston 40 to move in the pump barrel 39, and at the same time opens the one-way valve 1, so that the water in the dust collecting bucket 6 is distributed to the two pump barrels 39 through the water distribution pipe 44, and then the one-way valve 1 is closed, and the water pushed by the piston 40 will be pushed into the connecting pipe, so that the water is distributed and transported to the water distribution ring 41 and the cooling pipe 2 respectively. 42, and the separated larger particles are cooled by spraying out through the nozzle and the water is recycled. At the same time, the water in the cooling tube 2 42 is guided to the cooling tube 1 33 to cool the dust collecting bucket 6. At the same time, the refrigeration layer 32 is started to improve the cooling effect. The water after passing through the cooling tube 1 33 is guided back to the dust collecting bucket 6 for recycling, thereby realizing the recycling of water. At the same time, the cooling tube 2 42 cools the smaller particles in the discharge pipe 10 to avoid the high temperature of the impurity particles from causing damage to the high temperature resistant filter bag 5. It is easy to use and more practical.

[0106] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for cleaning the interior of a DCB sintering furnace, characterized in that: Use the internal cleaning device of the sintering furnace to clean the inner wall of the sintering furnace, and stipulate that the frequency of minor maintenance is once every three months, the main content is: cooling to 800℃, including high-temperature dust collection; the frequency of major maintenance is once a year, the main content is: cooling to room temperature, mainly including furnace bottom plate maintenance, furnace internal cleaning, and mesh belt replacement; Major and minor maintenance The following steps are involved: S1: First, the sintering furnace to be cleaned is cooled down, and when the temperature starts to drop, the oxygen and nitrogen are stopped; S2: When the internal temperature of the sintering furnace is reduced to 800°C, a fence is set up around the equipment; S3: Then use the cleaning device to directly vacuum the furnace. At the same time, the high-temperature particles will be cooled and taken away by the water circulation system. At this time, the minor maintenance is over, and the preparations before resuming production can be carried out according to steps S18-S24: S4: When the sintering furnace is undergoing major maintenance, it should be cooled to room temperature and enclosures should be set up around the equipment; S5: Then cut the mesh belt and drag out both ends of it; S6: Then, a cleaning device is inserted into the furnace to suck out foreign matter; S7: Pull the furnace bottom plate out of the furnace; S8: Arrange the furnace bottom plates in order, and then wipe the front and back of the furnace bottom plates repeatedly with a dust-free cloth dipped in water; S9: After wiping, clean off the raised parts on the furnace floor; S10: then placing the partially incompletely oxidized furnace bottom plate and the new furnace bottom plate to be replaced into a muffle furnace for oxidation treatment; S11: The turbine fan (2) in the cleaning device is used in conjunction with the joint (7) through the dust suction pipe (8) to extend into the furnace for dust suction. When the dust suction joint dedicated to normal temperature is used to clean the inside of the furnace, since the material of the joint is relatively soft, an iron rod is used to support it when cleaning deep inside the furnace; S12: Open the nitrogen gas to the maximum to purge the inside of the furnace; S13: Use a steel brush to scrub the inner top of the furnace and use a sweeping device to vacuum it to clean it; S14: Perform the same cleaning process on the other side of the furnace according to the above steps; S15: Use a cleaning device to vacuum the bottom of the furnace and clean it: S16: After the furnace bottom plate is oxidized, install it back into the furnace; S17: The mesh belt is installed; S18: Clean the area around the device using a dust-free cloth dipped in water, alcohol, or a vacuum cleaner. S19: Remove the fence around the equipment; S20: Use a tester to test the particle size of the environment around the equipment to ensure that it meets the clean room standards; S21: Confirm the cleaning effect of the furnace: visual inspection + strong flashlight confirmation, requiring no obvious dust in the furnace, then the major maintenance is over; S22: Start the furnace to heat up; S23: After each temperature zone reaches the set value, the temperature curve is pulled to ensure that the temperature curve is normal; S24: Start trial production and monitor the surface condition and peel strength of the product in the early stage.

2. A method for cleaning the interior of a DCB sintering furnace according to claim 1, characterized in that: The mesh belt in step S17 involves a method for oxidizing the mesh belt in advance, comprising the following steps: S17.1 mesh belt oxidation furnace replacement oxidation belt process: a) Turn off the mesh belt running switch to ensure that the conveyor belt stops running; b) Roll the new mesh belt counterclockwise onto the No. 2 transmission wheel, cut the old mesh belt, and connect the upper end to the new mesh belt; c) Use the handle to shake the driving wheel device, roll the lower end of the old mesh belt counterclockwise onto the No. 1 transmission wheel, turn on the switch of the external transmission system, wait for the old mesh belt to be completely wound, and turn off the transmission switch; d) Disconnect the connection between the old and new mesh belts, then connect the upper and lower ends of the new mesh belt, and move the external guide rail until the mesh belt is straightened; S17.2 mesh belt oxidation furnace startup process: a) Open the air inlet valve, water inlet valve and water outlet valve; b) Press the power switch, the equipment is powered on, the power indicator light comes on, and all temperature controllers are powered on and displayed; c) Setting temperature parameters using a computer system; d) Press the mesh belt button, set the mesh belt speed, and the mesh belt starts running; e) Press the heating button and the furnace starts to heat up; f) When ventilating, first open the gas source switch at the rear of the equipment, adjust the pressure reducing valve to the working pressure, and finally adjust each flow meter to the working flow; g) When any temperature zone rises to 400℃, turn on the cooling switch to supply cooling air.

3. A device for cleaning the interior of a DCB sintering furnace, which is applied to a method for cleaning the interior of a DCB sintering furnace according to any one of claims 1 to 2, characterized in that: The joint (7) is connected to the air inlet of the turbine fan (2); a metal pulley is rotatably mounted at the bottom of the dust suction end of the dust suction pipe (8); a base (1) is provided at the bottom of the turbine fan (2); a universal wheel is symmetrically provided at the bottom of the base (1); a cyclone separator (3) and a filter cartridge (4) are provided on the left and right sides of the base (1); seven layers of high-temperature resistant filter bags (5) are provided on the top and bottom of the filter cartridge (4); a dust collecting bucket (6) is provided below the cyclone separator (3) at the top of the base (1); a screening mechanism is provided in the dust collecting bucket (6); the cyclone separator (3) and the filter cartridge (4) are provided on the top and bottom of the base (1); A water circulation mechanism connected to the screening mechanism is provided between the filter cartridges (4); the air outlet of the turbine fan (2) is connected to the feed port of the cyclone separator (3) through a feed pipe (9); the top discharge port of the cyclone separator (3) is connected to the top of the filter cartridge (4) through a discharge pipe (10); the screening mechanism comprises a filter plate (11), and the filter plate (11) is arranged in a dust collecting bucket (6); a partition plate (12) is fixedly installed below the filter plate (11) in the dust collecting bucket (6); a crankshaft (13) is rotatably installed below the partition plate (12) in the dust collecting bucket (6); the crankshaft One end of the crankshaft (13) is connected to a motor (14) at the rear of the dust collecting bucket (6), a connecting piece (15) is sleeved on the outer side of the crankshaft (13), and the other end of the connecting piece (15) is movably connected to a push rod (16), and the upper end of the push rod (16) is fixedly connected to the bottom of the filter plate (11), and an L frame (17) is symmetrically arranged on the outer side of the push rod (16), and a gear (18) is rotatably installed on the L frame (17) relative to the outer side in the dust collecting bucket (6), and a tooth groove (1) meshing with the gear (18) is provided on the outer wall of the L frame (17), and the gear (18) is A local gear (19) is sleeved on the outer wall of the connecting shaft, a support rod (20) is provided on one side of the local gear (19), and two tooth grooves matched with the local gear (19) are opened on the side wall of the support rod (20), the upper end of the support rod (20) is connected with a knocking head (21) at the bottom of the filter plate (11), and a sliding rod (29) is symmetrically provided on the inner side of the dust collecting bucket (6) at the bottom of the partition (12), and a sliding block (30) is sleeved on the outer side of the sliding rod (29), and the sliding block (30) is fixedly connected to the support rod (20), and a spring (31) is sleeved on the outer side of the sliding rod (29) below the sliding block (30).

4. The device for cleaning the interior of a DCB sintering furnace according to claim 3, characterized in that: The water circulation mechanism comprises a crankshaft 2 (34), and two crankshafts 2 (34) are provided. The two crankshafts 2 (34) are rotatably mounted behind the dust collecting bucket (6) through a support frame, and the two crankshafts 2 (34) are connected at one end on the inner side thereof, and the crankshaft 2 (34) is connected at one end on the outer side thereof with a bevel gear 3 (35). The output end of the motor (14) is sleeved with a bevel gear 4 (36) meshing with the bevel gear 3 (35). The outer side of the crankshaft 2 (34) is provided with a bevel gear 4 (36) meshing with the bevel gear 3 (35). A second connecting piece (37) is sleeved, and one end of the second connecting piece (37) is movably connected to a second push rod (38). Two pump barrels (39) are arranged between the dust collecting bucket (6) and the filter barrel (4). One end of the second push rod (38) is connected to a piston (40) in the pump barrel (39). One end of each of the two pump barrels (39) is connected to a connecting pipe with a second one-way valve. A water distribution pipe (4) with a first one-way valve is arranged between the partition plate (12) and the filter plate (11) on one side of the dust collecting bucket (6). 4), and the water distribution pipe (44) is respectively connected to the two pump barrels (39), a water distribution ring (41) is provided between the cyclone separator (3) and the dust collecting bucket (6), and the inner wall of the water distribution ring (41) is provided with a plurality of inclined nozzles, one end of the connecting pipe close to the dust collecting bucket (6) is connected to the water distribution ring (41), and one end of the connecting pipe away from the dust collecting bucket (6) is connected to the cooling pipe 2 (42), and the cooling pipe 2 (42) is sleeved on the outer side of the discharge pipe (10), and the discharge pipe (10) is provided with a plurality of inclined nozzles. The outer wall of the material pipe (10) is provided with a cooling box (43) on the outer side of the cooling tube 2 (42); the side wall of the dust collecting bucket (6) is provided with a cavity; a refrigeration layer (32) is provided on one side of the cavity; a cooling tube 1 (33) is provided on the side of the refrigeration layer (32) close to the inner wall of the dust collecting bucket (6); and the cooling tube 1 (33) is located in the cavity; the lower end of the cooling tube 1 (33) is connected to one end of the cooling tube 2 (42), and the upper end of the cooling tube 1 (33) is connected to the dust collecting bucket (6).

5. The device for cleaning the interior of a DCB sintering furnace according to claim 3, characterized in that: The inner wall of the dust collecting bucket (6) is rotatably mounted with a second gear (22) on the inner side of the L frame (17); the inner wall of the L frame (17) is provided with a tooth groove (3) meshing with the second gear (22); the outer wall of the connecting shaft of the second gear (22) is sleeved with a bevel gear (23); a rotating rod (24) is rotatably mounted at the bottom of the partition (12); the lower end of the rotating rod (24) passes through the top of the L frame (17) and is further connected with a second bevel gear (25); the second bevel gear (25) meshes with the first bevel gear (23); and a stirring rod (26) is symmetrically arranged at the upper end of the rotating rod (24) between the partition (12) and the filter plate (11).

6. The device for cleaning the interior of a DCB sintering furnace according to claim 3, characterized in that: A guide rod (27) is symmetrically arranged at the bottom of the filter plate (11), a guide block (28) is sleeved on the outer side of the guide rod (27), and the guide block (28) is fixedly connected to the inner wall of the dust collecting bucket (6), and the guide block (28) is slidably connected to the guide rod (27).

7. The device for cleaning the interior of a DCB sintering furnace according to claim 5, characterized in that: The rotating rod (24) is rotatably connected to the partition plate (12) via a bearing, and the rotating rod (24) is slidably connected to the L frame (17).

8. The device for cleaning the interior of a DCB sintering furnace according to claim 3, characterized in that: One end of the connecting member 1 (15) is rotationally connected to the crankshaft 1 (13), and the other end of the connecting member 1 (15) is hingedly connected to the push rod 1 (16).

9. The device for cleaning the interior of a DCB sintering furnace according to claim 4, characterized in that: The cooling pipe 2 (42) and the cooling pipe 1 (33) are both arranged in a spiral distribution form, and a plurality of the nozzles are arranged in a circumferentially equidistant array distribution. One end of the connecting piece 2 (37) is rotatably connected to the crankshaft 2 (34), the push rod 2 (38) is hingedly connected to the connecting piece 2 (37), and a sealing ring is sleeved between the outer wall of the piston (40) and the inner wall of the pump barrel (39).

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