Induced draft fan impeller outer diameter cutting device

Abstract

The invention discloses a cutting device for the outer diameter of an impeller of an induced draft fan. The cutting device comprises a rack, a workbench, a support movably arranged on the rack, a cutting frame arranged on the support in a lifting mode and a cutting head arranged on the cutting frame. The cutting device further comprises a protection mechanism arranged on the cutting frame. The protection mechanism comprises a protection frame detachably arranged on the cutting frame, a plurality of eye protection frames movably arranged on the protection frame, eye protection pieces arranged on the eye protection frames, a power assembly used for controlling the eye protection pieces to move and a cleaning assembly used for cleaning the eye protection pieces. The cutting head is located in a space defined by the multiple eye protection pieces. The cutting device has the effect of protecting hard light in the cutting process, and the cutting safety environment is improved.

Description

Technical Field

[0001] The present application relates to the field of impeller cutting, and in particular to a device for cutting the outer diameter of an impeller of an induced draft fan. Background Art

[0002] At present, the outer diameter of the impeller of the existing induced draft fan is processed by lathe. The outer diameter processing of impellers with different outer diameters requires lathe equipment of different specifications. It has a high complexity coefficient, many equipments, large equipment investment, high equipment operation cost, high technical quality requirements for equipment operators, long single-piece processing time, and high processing cost, which is not conducive to reducing the manufacturing cost of the entire induced draft fan.

[0003] In the related art, the Chinese patent with application number CN201220215605.9 proposes a special machine for cutting the outer diameter of the impeller of the exhaust fan, which is composed of a frame, a horizontal moving mechanism, a vertical lifting mechanism, a motor, a transmission group, a turntable, a motor pulley, a main shaft pulley, and a floating cutting sleeve. Among them, the frame is welded by steel plates, which is tight and stable, and all parts are connected and fixed. The motor and the transmission group are fixed on the side of the frame. The motor drives the main shaft and the turntable to rotate through the belt and the pulley. The horizontal moving mechanism adopts rack transmission, and the horizontal moving hand wheel is turned to make the horizontal moving platform move horizontally along the guide rail. A column is installed on the horizontal moving platform, and a vertical lifting mechanism is installed on the column. The screw pair is used for transmission, and the lifting hand wheel is turned to drive the screw to rotate, lift the crossbeam, and drive the cutting knife to lift. It solves the problems of special machines in the current fan impeller processing, high technical quality requirements for equipment operators, long processing time for single pieces, and high processing costs.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: during the cutting process, since plasma cutting technology is currently mostly used, the strong light generated by it will cause pollution, so it is necessary to protect the strong light generated. Summary of the invention

[0005] In order to improve the problem of strong light pollution during the cutting process, the present application provides a device for cutting the outer diameter of an induced draft fan impeller.

[0006] The present application provides a device for cutting the outer diameter of an induced draft fan impeller using the following technical solution: A device for cutting the outer diameter of an induced draft fan impeller comprises a frame, a workbench, a bracket movably arranged on the frame, a cutting frame movably arranged on the bracket, and a cutting head arranged on the cutting frame; Also included is a protection mechanism disposed on the cutting frame; The protection mechanism includes a protection frame detachably arranged on the cutting frame, a plurality of eye protection frames movably arranged on the protection frame, eye protection plates arranged on the eye protection frame, a power component for controlling the movement of the eye protection plates, and a cleaning component for cleaning the eye protection plates; the cutting head is located in a space surrounded by a plurality of the eye protection plates.

[0007] Optionally, the power assembly includes a power motor, a power roller, a plurality of power ropes, a plurality of guide rings, a locking portion for locking the eye guard frame, and a cooling portion for cooling the eye guard. The power roller is rotatably arranged at the axial position of the protective frame. One end of a plurality of power ropes is connected to the movable end of the eye guard frame, and the other ends are fixed to the power roller. A plurality of separators are also arranged on the power roller. One end of the power rope is wrapped around a portion between two adjacent separators on the power roller. The plurality of guide rings are respectively fixed on the four side walls of the protective frame, and the power rope passes through the corresponding guide rings.

[0008] Optionally, the locking part includes a trigger block elastically arranged at the bottom of the eye protection frame, a proximity switch and a self-locking group for realizing self-locking of the eye protection frame, a trigger cavity is arranged at the bottom of the protective frame, the bottom of the trigger cavity is opened, the proximity switch is arranged at the top of the trigger cavity, the proximity switch controls the operation of the self-locking group, and the trigger block is located at one end of the trigger cavity and is arranged as an arc surface.

[0009] Optionally, the self-locking group includes a rotating shaft, an air supply component, an airbag, an electromagnet ring fixed on the protective frame and a self-locking block. The rotating shaft is used to realize the rotation of the eye protection frame and the protective frame. A ventilation cavity is provided at one end of the rotating shaft. The inner wall of the ventilation cavity is penetrated by a self-locking hole for the movement of the self-locking block. The self-locking block is elastically arranged in the self-locking hole. The airbag is arranged in the ventilation cavity. The air supply component is used to supply air to multiple airbags at the same time. The electromagnet ring covers the rotating shaft. The self-locking block is squeezed by the inflated airbag until it is adsorbed by the electromagnet ring.

[0010] Optionally, the cooling part includes a cooling chamber and a quenching group for accelerating water cooling, the cooling chamber is arranged in the eye protection frame, a water inlet is arranged on the outer side of the top wall of the eye protection frame, the water inlet is provided with a solenoid valve, and the quenching group is used to cool the water.

[0011] Optionally, the quenching group includes a storage chamber, a winding roller, a winding motor, a winding rope, a plurality of non-woven bags and a control component. A control port is provided between the storage chamber and the cooling chamber. The control component is used to block / open the control port. The winding roller is rotatably arranged in the storage chamber. The winding motor controls the rotation of the winding roller. The plurality of non-woven bags are tied to the winding rope. The non-woven bags are filled with sodium acetate particles.

[0012] Optionally, the cleaning assembly includes a coating part and a heating part for coating the damaged part, the coating part includes a coating box lifted and lowered in the eye protection frame, a coating plate rotatably arranged at the bottom of the coating box, an extrusion part and a wiping piece arranged at the bottom of the coating plate, the coating box is filled with solid vaseline, the extrusion part is used to squeeze the vaseline in the coating box onto the wiping piece, the heating part is used to heat the coating plate, and the coating box is opened at one end facing the coating plate.

[0013] Optionally, the extrusion part includes an extrusion plate and an extrusion electric push rod, the extrusion plate is movably arranged in the coating box, and the extrusion electric push rod is used to extrude the vaseline in the coating box.

[0014] Optionally, the heating part includes a detection tube, a sliding tube, a temperature sensor and a hose, the detection tube is arranged in the cooling chamber, the sliding tube slides in the detection tube, a detection port is arranged on one side of the sliding tube, the temperature sensor is arranged in the sliding tube, the sliding tube is located in the detection tube in an initial state, the hose is arranged on the back side of the cooling chamber and the hose is used to connect the cooling chamber and the inner cavity of the coating plate, and the initial position of the coating plate is lower than the highest end of the cooling chamber.

[0015] Optionally, the cooling chamber is further provided with a waste liquid port and a waste liquid pipe, and the waste liquid pipe is also provided with a solenoid valve.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. In the initial state, the trigger block stretches the spring under the action of its own weight. As the eye protection frame swings downward, the power roller continuously releases the corresponding power rope until the trigger block contacts the workbench or raw material. At this time, under the action of the gravity of the eye protection frame, the trigger block is squeezed toward the trigger cavity, and the spring is squeezed and deformed until the trigger block moves to contact the proximity switch. At this time, the self-locking group is triggered to work, which proves that the eye protection frame moves above the workbench or raw material, and then the position of the eye protection frame and the eye protection sheet can be locked. The subsequent eye protection sheet always follows the movement of the cutting head, and the eye protection sheet can achieve the protective effect of the eye protection sheet against the strong light generated during the cutting process; 2. First, water is still needed to cool the eye guard. However, if the temperature of the eye guard and the goggles is consistent and will not drop significantly, the control panel will be turned on at this time. It should be noted that the water in the cooling chamber is located below the eye guard at this time, and the water will not enter the cooling chamber. As the winding motor controls the winding roller to rotate, the winding roller begins to release the winding rope, and the non-woven bag enters the cooling chamber from the storage chamber. At this time, the control panel is closed again, the eye guard is unlocked, and the protective sheet is temporarily swung upward until it is above the protective frame. After the water is completely in contact with the sodium acetate in the non-woven bag, wait until the sodium acetate is decomposed, and then put down the eye guard, and lock the eye guard again, which greatly improves the cooling effect of the eye guard and the goggles. 3. When cooling, part of the water can be directed to the coating plate. After the cutting work is completed, the coating plate can be rotated to the top of the protective frame, and the solenoid valve on the hose can be opened to allow part of the water to enter the coating plate for storage. Since the coating plate is separated from the cooling chamber, the cooling process has little effect on the water in the coating plate. Moreover, the coating plate is close to one side of the cutting head, which also has the effect of keeping the water in the coating plate warm. When the cutting protection work is completed, the coating plate is rotated until it contacts the opening of the coating box, and the Vaseline in the coating box is squeezed through the squeezing plate until the Vaseline is coated on the wiper. After the Vaseline is wiped on the wiper, the addition of hot water in the coating plate softens the Vaseline on the wiper, and then the wiper is rotated to a position abutting the goggles. As the coating box rises and falls, the coating plate and the wiper slide together and coat the Vaseline on the inner side of the goggles, which has the effect of repairing the goggles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 yes Figure 1 A magnified schematic diagram of part A; Figure 3 yes Figure 1 A magnified schematic diagram of part B; Figure 4 is a schematic diagram of an air supply member, a rotating shaft, a self-locking block and an electromagnet ring in an embodiment of the present application; Figure 5 It is a schematic diagram of the goggles frame, goggles, detection tube, sliding tube and temperature sensor in the embodiment of the present application.

[0018] Figure numerals: 1, frame; 2, workbench; 3, bracket; 4, cutting frame; 5, cutting head; 6, protective frame; 7, eye protection frame; 8, eye protection plate; 9, power motor; 10, power roller; 11, power rope; 12, guide ring; 13, separator; 14, trigger block; 15, proximity switch; 16, trigger chamber; 17, rotating shaft; 18, air pump; 19, air pipe; 20, air bag; 21, electromagnet ring; 22, self-locking block; 23, ventilation cavity; 24, self-locking hole; 25, moving block; 26, moving groove; 27, cooling cavity; 28, storage cavity; 29, winding roller; 30, winding motor; 31, winding rope; 32, non-woven bag; 33, control part; 34, coating box; 35, coating plate; 36, extrusion plate; 37, extrusion electric push rod; 38, wiping part; 39, detection tube; 40, sliding tube; 41, temperature sensor; 42, hose; 43, detection port; 44, waste liquid pipe. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-5 This application is described in further detail.

[0020] The present application discloses a device for cutting the outer diameter of an impeller of an induced draft fan. Figure 1-Figure 5 A device for cutting the outer diameter of an induced draft fan impeller comprises a frame 1, a workbench 2, a bracket 3 movably arranged on the frame 1, a cutting frame 4 lifted and lowered on the bracket 3, and a cutting head 5 arranged on the cutting frame 4; the bracket 3 can move along two mutually perpendicular directions on a horizontal plane, and adopts a driving method in the prior art, which will not be repeated in this embodiment. The cutting head 5 uses plasma cutting technology to place the raw material of the impeller on the workbench 2, and then can control the position of the bracket 3 and the cutting frame 4 to achieve the cutting of the impeller to a certain size and shape.

[0021] The invention also includes a protective mechanism arranged on the cutting frame 4; the protective mechanism is used to protect against light pollution during the cutting process to ensure a safe working environment for the staff, and the protective mechanism includes a protective frame 6 detachably arranged on the cutting frame 4, a plurality of eye protection frames 7 movably arranged on the protective frame 6, eye protection plates 8 arranged on the eye protection frame 7, a power component for controlling the movement of the eye protection plates 8, and a cleaning component for cleaning the eye protection plates 8; the cutting head 5 is located in a space surrounded by a plurality of eye protection plates 8, the protective frame 6 is fixed above the cutting frame 4, and rises and falls with the cutting frame 4. The protective frame 6 is fixed to the cutting frame 4 by a plurality of bolts, and the eye protection frame 7 is rotatably connected to the protective frame 6. In the embodiment, two eye protection frames 7 or four eye protection frames 7 can be set. If two eye protection frames 7 are selected, the two sides of the protective frame 6 are opened. If four eye protection frames 7 are selected, the four sides of the protective frame 6 are all opened. The protective frame 6 and the axis of rotation of the eye protection frame 7 are horizontally set. In the initial state, the eye protection frame 7 and the eye protection piece 8 are both initially horizontal or located above the protective frame 6, that is, the eye protection frame 7 will not affect the cutting head 5, and it is convenient to observe the position of the raw materials and the cutting head 5 in the initial state. The eye protection piece 8 is made of the material of the goggles in the prior art, which is used to reduce light pollution, so as to avoid the light pollution generated during the cutting process causing discomfort to the staff's glasses.

[0022] The power assembly includes a power motor 9, a power roller 10, a plurality of power ropes 11, a plurality of guide rings 12, a locking portion for locking the eye protection frame 7, and a cooling portion for cooling the eye protection plate 8. The power roller 10 is rotatably arranged at the axial position of the protective frame 6. One end of the plurality of power ropes 11 is connected to the movable end of the eye protection frame 7, and the other end is fixed to the power roller 10. A plurality of separators 13 are also arranged on the power roller 10. One end of the power rope 11 is wound around the portion between two adjacent separators 13 on the power roller 10. The plurality of guide rings 12 are respectively fixed on the four side walls of the protective frame 6, and the power ropes 11 pass through the corresponding guide rings 12. The rotating axis 17 of the power roller 10 is set vertically. If the eye protection pieces 8 are set to two, the power rope 11 and the guide ring 12 are both set to four, and the separator 13 is set to three. Through the dividing action of the three separators 13, the power roller 10 is divided into two parts, that is, the two power ropes 11 are respectively wound around the power roller 10. The two power ropes 11 can be synchronously controlled through the same power roller 10. In this embodiment, by setting the length of the power rope 11, the synchronous swing of the two eye protection frames 7 can be achieved, and the guide ring 12 is used to ensure that the two power ropes 11 are wound around the corresponding area.

[0023] The locking part includes a trigger block 14 elastically arranged at the bottom of the eye protection frame 7, a proximity switch 15 and a self-locking group for realizing the self-locking of the eye protection frame 7. A trigger cavity 16 is arranged at the bottom of the protective frame 6, and the bottom of the trigger cavity 16 is opened. The proximity switch 15 is arranged at the top of the trigger cavity 16. The proximity switch 15 controls the operation of the self-locking group. One end of the trigger block 14 located in the trigger cavity 16 is arranged as an arc surface, and one end of the trigger block 14 is located outside the trigger cavity 16. The other end of the trigger cavity 16 is connected to the inner wall of the end of the trigger cavity 16 through a plurality of springs, thereby realizing the elastic connection between the trigger block 14 and the trigger cavity 16. In the initial state, the trigger block 14 is under its own weight. , the spring is stretched under the action of, and as the eye protection frame 7 swings downward, the power roller 10 continuously releases the corresponding power rope 11 until the trigger block 14 contacts the workbench 2 or the raw material. At this time, under the action of the gravity of the eye protection frame 7, the trigger block 14 is squeezed toward the trigger cavity 16, and the spring is squeezed and deformed until the trigger block 14 moves to contact the proximity switch 15. At this time, the self-locking group is triggered to work, which proves that the eye protection frame 7 moves to the top of the workbench 2 or the raw material, and then the position of the eye protection frame 7 and the eye protection piece 8 can be locked. Subsequently, the eye protection piece 8 always follows the movement of the cutting head 5, and the eye protection piece 8 can achieve the protective effect of the strong light generated during the cutting process.

[0024] The self-locking group includes a rotating shaft 17, an air supply component, an air bag 20, an electromagnet ring 21 fixed on the protective frame 6, and a self-locking block 22. The rotating shaft 17 is used to realize the rotation of the eye protection frame 7 and the protective frame 6. A ventilation cavity 23 is provided at one end of the rotating shaft 17. The inner wall of the ventilation cavity 23 is penetrated by a self-locking hole 24 for the movement of the self-locking block 22. The self-locking block 22 is elastically arranged in the self-locking hole 24. The air bag 20 is arranged in the ventilation cavity 23. The air supply component is used to supply air to multiple air bags 20 at the same time. The electromagnet ring 21 covers the rotating shaft 17. The self-locking block 22 is squeezed by the inflated air bag 20 until it is adsorbed by the electromagnet ring 21; the supply component includes an air pump 18 and multiple air pipes 19. The multiple air pipes 19 are all connected to the output end of the air pump 18. In the embodiment, the air pump 18 is placed in the external environment, and the air pipe 19 is used to connect the airbag 20; the air pump 18 is connected to the proximity switch 15 through a PLC controller control, and the side wall of the self-locking block 22 is fixedly connected with a moving block 25, and the side wall of the self-locking hole 24 is provided with a moving groove 26, and the two ends of the moving groove 26 in the length direction are closed. The moving block 25 and the corresponding side walls of the moving groove 26 are connected by an elastic member, thereby realizing the elastic setting of the self-locking block 22 in the self-locking hole 24. In the initial state, one end of the self-locking block 22 is in the ventilation cavity 23, and the other end is also located in the self-locking hole 24 or outside the self-locking hole 24, but this end of the self-locking block 22 does not contact the electromagnet ring 21, and the inner diameter of the electromagnet ring 21 is larger than the outer diameter of the rotating shaft 17.

[0025] If the proximity switch 15 starts to trigger the air pump 18 to start working, the airbag 20 begins to expand and squeezes the self-locking block 22 out of the self-locking hole 24 until the other end of the self-locking block 22 moves to contact the electromagnet ring 21. At this time, the electromagnet ring 21 is energized to adsorb the self-locking block 22, and the electromagnet ring 21 limits the rotation of the rotating shaft 17 to achieve the self-locking effect of the eye protection frame 7. Why is the self-locking block 22 and the electromagnet ring 21 adsorbed instead of directly contacting the electromagnet ring 21 in this embodiment? This is because during the reciprocating rotation of the rotating shaft 17, if the inner wall of the electromagnet ring 21 directly contacts the rotating shaft 17, the electromagnet ring 21 is constantly rubbed, which will affect the service life of the electromagnet ring 21. After completing the work on the eye protection frame 7, the eye protection piece 8 begins to play a role in protecting against strong light.

[0026] The cooling part includes a cooling chamber 27 and a quenching group for accelerating water cooling. The cooling chamber 27 is arranged in the eye guard frame 7. A water inlet is arranged on the outer side of the top wall of the eye guard frame 7. The water inlet is provided with an electromagnetic valve. The quenching group is used to cool the water. Water is introduced into the cooling chamber 27. However, in this embodiment, there is no need to fill the cold cutting chamber with water. Only three-quarters of it needs to be filled because it is necessary to ensure the movement of water in the cooling chamber 27. When the eye guard frame 7 swings downward, the water flows toward the bottom of the eye guard frame 7. After the eye guard frame 7 swings to above the protective frame 6, the water flows toward the upper end of the eye guard frame 7 to achieve the water flow effect.

[0027] The quenching group includes a storage chamber 28, a winding roller 29, a winding motor 30, a winding rope 31, a plurality of non-woven bags 32, and a control component 33. A control port is provided between the storage chamber 28 and the cooling chamber 27. The control component is used to block / open the control port. The winding roller 29 is rotatably provided in the storage chamber 28. The winding motor 30 controls the rotation of the winding roller 29. A plurality of non-woven bags 32 are tied to the winding rope 31. The control component 33 includes a control panel slidably provided at the control port. The sliding of the control panel is realized by an electric push rod. The non-woven bag 32 contains sodium acetate particles. After sodium acetate is dissolved in water, the acetate ions (CH3COO-) will combine with the hydrogen ions (H+) in the water to generate acetic acid (CH3COOH), which is a weak acid. At the same time, sodium ions (Na+) do not participate in the hydrolysis reaction. The hydrolysis reaction of sodium acetate is a special chemical reaction in which when salt is dissolved in water, its ions interact with water molecules to generate weak acids or weak bases. This process usually requires the absorption of heat, which is an endothermic reaction, thereby reducing the temperature of the water in the cooling chamber 27 and further accelerating the cooling effect on the eye guard 7.

[0028] During the protection process of the goggles frame 7 and the goggles 8, the goggles 8 are in a high-temperature environment and high-temperature waste chips splash onto the goggles 8, so it is necessary to cool down and clean the goggles 8 in time. Since the goggles frame 7 is the frame of the goggles 8, the temperature of the goggles 8 can also be reduced after heat transfer occurs between the goggles 8 and the goggles frame 7. Of course, water is still needed to cool the goggles frame 7 first. However, if the temperatures of the goggles frame 7 and the goggles 8 are consistent and will not decrease significantly, the control panel will be turned on at this time, and it should be noted that at this time, the water in the cooling chamber 27 is at the level of the goggles. Under the eye frame 7, water will not enter the cooling chamber 27. As the winding motor 30 controls the winding roller 29 to rotate, the winding roller 29 begins to release the winding rope 31, and the non-woven bag 32 enters the cooling chamber 27 from the storage chamber 28. At this time, the control panel is closed again, the lock of the eye protection frame 7 is released, and the protective sheet is temporarily swung upward until it is located above the protective frame 6. After the water is completely in contact with the sodium acetate in the non-woven bag 32, wait until the sodium acetate is decomposed, and then put down the eye protection frame 7, and lock the eye protection frame 7 again, which greatly improves the cooling effect of the eye protection frame 7 and the eye protection sheet 8. The cooling chamber 27 is also provided with a waste liquid port and a waste liquid pipe 44, and the waste liquid pipe 44 is also provided with a solenoid valve. When the protection work and cooling work are completed, the solenoid valve on the waste liquid pipe 44 can be opened to discharge the product after the decomposition of acetic acid to avoid affecting the next work of the cooling chamber 27.

[0029] The cleaning assembly includes a coating unit and a heating unit for coating the damaged part. The coating unit includes a coating box 34 that is lifted and arranged in the eye protection frame 7, a coating plate 35 that is rotatably arranged at the bottom of the coating box 34, an extrusion unit, and a wiping piece 38 that is arranged at the bottom of the coating plate 35. The coating box 34 is filled with solid vaseline. The extrusion unit is used to squeeze the vaseline in the coating box 34 onto the wiping piece 38. The heating unit is used to heat the coating plate 35. The coating box 34 is opened at one end facing the coating plate 35. The solid vaseline is The paste is better, the lifting of the coating frame is achieved by an electric push rod, and the coating box 34 and the cooling chamber 27 are respectively located on both sides of the eye protection frame 7, and the coating box 34 is close to one side of the cutting head 5, and the coating plate 35 is in the initial state. The wiper 38 faces downward, and the rotating shaft 17 of the coating plate 35 is arranged along the length direction of the coating box 34. The extrusion part includes an extrusion plate 36 and an extrusion electric push rod 37. The extrusion plate 36 is movably arranged in the coating box 34, and the extrusion electric push rod 37 is used to extrude the Vaseline in the coating box 34.

[0030] Since the flying waste hits the inner side of the goggles 8, it is easy to damage the goggles 8. After the goggles 8 are damaged, it is inconvenient for the staff to observe the working condition of the cutting head 5. Therefore, the goggles 8 need to be repaired, and the paste vaseline needs to be heated and softened for better effect; the heating part includes a detection tube 39, a sliding tube 40, a temperature sensor 41 and a hose 42. The detection tube 39 is arranged in the cooling chamber 27, the sliding tube 40 slides in the detection tube 39, a detection port 43 is arranged on one side of the sliding tube 40, and the temperature sensor 41 is arranged in the sliding tube 40. The sliding tube 40 is located in the detection tube 39 in the initial state. In the cooling chamber 27, a hose 42 is arranged on the back of the cooling chamber 27 and the hose 42 is used to connect the cooling chamber 27 and the inner cavity of the coating plate 35. The initial position of the coating plate 35 is lower than the highest end of the cooling chamber 27. Since the water in the cooling chamber 27 is always conducting heat transfer with the high temperature environment, part of the cooling water is decomposed with the sodium acetate, and part of the water can soften the vaseline. A solenoid valve is also arranged on the hose 42. If during the protection process, the sliding tube 40 is extended out of the detection tube 39, and the temperature sensor 41 contacts the water, if the temperature of the water is high at this time, the eye protection frame 7 can be rotated until the eye protection frame 7 is located above the protection frame 6. When cooling, part of the water can be directed to the coating plate 35. If the cutting work is completed, the coating plate 35 can be rotated to the top of the protective frame 6, and the solenoid valve on the hose 42 is opened, and part of the water enters the coating plate 35 for storage. Since the coating plate 35 is separated from the cooling chamber 27, the cooling process has little effect on the water in the coating plate 35. In addition, the coating plate 35 is close to one side of the cutting head 5, which also has the effect of keeping the water in the coating plate 35 warm. When the cutting protection work is completed, the coating plate 35 is rotated until it contacts the opening of the coating box 34, and the vaseline in the coating box 34 is squeezed by the squeezing plate 36. , until the vaseline is coated on the wiping piece 38. The wiping piece 38 in this embodiment is made of sponge or other materials. Of course, the coating box 34 can also be provided with a control member 33 to prevent the vaseline from falling. Under normal conditions, the paste vaseline will not automatically fall from the coating box 34. After the vaseline is wiped on the wiping piece 38, the addition of hot water in the coating plate 35 softens the vaseline on the wiping piece 38, and then the wiping piece 38 is rotated to a position abutting the goggles 8. As the coating box 34 rises and falls, the coating plate 35 and the wiping piece 38 slide together and coat the vaseline on the inner side of the goggles 8, thereby repairing the goggles 8.

[0031] The implementation principle of a device for cutting the outer diameter of an induced draft fan impeller according to an embodiment of the present application is as follows: in the initial state, the trigger block 14 stretches the spring under the action of its own weight, and as the eye protection frame 7 swings downward, the power roller 10 continuously releases the corresponding power rope 11 until the trigger block 14 contacts the workbench 2 or the raw material. At this time, under the action of the gravity of the eye protection frame 7, the trigger block 14 is squeezed toward the trigger cavity 16, and the spring is squeezed and deformed until the trigger block 14 moves to contact the proximity switch 15. At this time, the self-locking group is triggered to work, which proves that the eye protection frame 7 moves to the top of the workbench 2 or the raw material, and then the position of the eye protection frame 7 and the eye protection plate 8 can be locked. Subsequently, the eye protection plate 8 always follows the movement of the cutting head 5, so that the eye protection plate 8 can achieve the protective effect of the strong light generated during the cutting process.

[0032] If the proximity switch 15 starts to trigger the air pump 18 to start working, the airbag 20 begins to expand and squeezes the self-locking block 22 out of the self-locking hole 24 until the other end of the self-locking block 22 moves to contact the electromagnet ring 21. At this time, the electromagnet ring 21 is energized to adsorb the self-locking block 22, and the electromagnet ring 21 limits the rotation of the rotating shaft 17 to achieve the self-locking effect of the eye protection frame 7. Why is the self-locking block 22 and the electromagnet ring 21 adsorbed instead of directly contacting the electromagnet ring 21 in this embodiment? This is because during the reciprocating rotation of the rotating shaft 17, if the inner wall of the electromagnet ring 21 directly contacts the rotating shaft 17, the electromagnet ring 21 is constantly rubbed, which will affect the service life of the electromagnet ring 21. After completing the work on the eye protection frame 7, the eye protection piece 8 begins to play a role in protecting against strong light.

[0033] First, water is still needed to cool the eye guard frame 7. However, if the temperatures of the eye guard frame 7 and the eye shield 8 are consistent and will not drop significantly, the control panel will be turned on at this time. It should be noted that the water in the cooling chamber 27 is located below the eye guard frame 7 at this time, and the water will not enter the cooling chamber 27. As the winding motor 30 controls the winding roller 29 to rotate, the winding roller 29 begins to release the winding rope 31, and the non-woven bag 32 enters the cooling chamber 27 from the storage chamber 28. At this time, the control panel is closed again, the eye guard frame 7 is unlocked, and the protective sheet is temporarily swung upward until it is above the protective frame 6. After the water is completely in contact with the sodium acetate in the non-woven bag 32, wait until the sodium acetate is decomposed, and then the eye guard frame 7 is put down, and the eye guard frame 7 is locked again, which greatly improves the cooling effect of the eye guard frame 7 and the eye shield 8.

[0034] When cooling, part of the water can be directed to the coating plate 35. If the cutting work is completed, the coating plate 35 can be rotated to the top of the protective frame 6, and the solenoid valve on the hose 42 is opened, and part of the water enters the coating plate 35 for storage. Since the coating plate 35 is separated from the cooling chamber 27, the cooling process has little effect on the water in the coating plate 35. In addition, the coating plate 35 is close to one side of the cutting head 5, which also has the effect of keeping the water in the coating plate 35 warm. When the cutting protection work is completed, the coating plate 35 can be rotated to the top of the protective frame 6, and the solenoid valve on the hose 42 is opened. The plate 35 contacts the opening of the coating box 34, and the Vaseline in the coating box 34 is squeezed by the squeezing plate 36 until the Vaseline is coated on the wiping piece 38. After the Vaseline is wiped on the wiping piece 38, the addition of hot water in the coating plate 35 softens the Vaseline on the wiping piece 38, and then the wiping piece 38 is rotated to a position abutting against the goggles 8. As the coating box 34 rises and falls, the coating plate 35 and the wiping piece 38 slide together and coat the Vaseline on the inner side of the goggles 8, thereby repairing the goggles 8.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for cutting the outer diameter of an induced draft fan impeller, characterized in that: It comprises a frame (1), a workbench (2), a support (3) movably arranged on the frame (1), a cutting frame (4) movably arranged on the support (3), and a cutting head (5) arranged on the cutting frame (4); It also includes a protection mechanism arranged on the cutting frame (4); The protection mechanism comprises a protection frame (6) detachably arranged on the cutting frame (4), a plurality of eye protection frames (7) movably arranged on the protection frame (6), an eye protection plate (8) arranged on the eye protection frame (7), a power component for controlling the movement of the eye protection plate (8) and a cleaning component for cleaning the eye protection plate (8); the cutting head (5) is located in a space surrounded by the plurality of eye protection plates (8).

2. The device for cutting the outer diameter of an induced draft fan impeller according to claim 1, characterized in that: The power assembly comprises a power motor (9), a power roller (10), a plurality of power ropes (11), a plurality of guide rings (12), a locking portion for locking the eye protection frame (7), and a cooling portion for cooling the eye protection plate (8). The power roller (10) is rotatably arranged at the axial position of the protective frame (6). One end of each of the plurality of power ropes (11) is connected to the movable end of the eye protection frame (7), and the other end is fixed to the power roller (10). A plurality of separators (13) are also arranged on the power roller (10). One end of the power rope (11) is wound around the portion between two adjacent separators (13) on the power roller (10). The plurality of guide rings (12) are respectively fixed to the four side walls of the protective frame (6), and the power rope (11) passes through the corresponding guide rings (12).

3. The device for cutting the outer diameter of an induced draft fan impeller according to claim 2, characterized in that: The locking portion comprises a trigger block (14) elastically arranged at the bottom of the eye protection frame (7), a proximity switch (15) and a self-locking group for realizing the self-locking of the eye protection frame (7); a trigger cavity (16) is arranged at the bottom of the protective frame (6); the bottom of the trigger cavity (16) is opened; the proximity switch (15) is arranged at the top of the trigger cavity (16); the proximity switch (15) controls the operation of the self-locking group; and one end of the trigger block (14) located in the trigger cavity (16) is arranged as an arc surface.

4. The device for cutting the outer diameter of an induced draft fan impeller according to claim 3, characterized in that: The self-locking group comprises a rotating shaft (17), an air supply component, an air bag (20), an electromagnet ring (21) fixed on the protective frame (6), and a self-locking block (22); the rotating shaft (17) is used to realize the rotation of the eye protection frame (7) and the protective frame (6); a ventilation cavity (23) is arranged at one end of the rotating shaft (17); a self-locking hole (24) for the movement of the self-locking block (22) is arranged through the inner wall of the ventilation cavity (23); the self-locking block (22) is elastically arranged in the self-locking hole (24); the air bag (20) is arranged in the ventilation cavity (23); the air supply component is used to supply air to a plurality of the air bags (20) at the same time; the electromagnet ring (21) covers the rotating shaft (17); the self-locking block (22) is squeezed by the inflated air bag (20) until it is adsorbed by the electromagnet ring (21).

5. The device for cutting the outer diameter of an induced draft fan impeller according to claim 3, characterized in that: The cooling unit comprises a cooling chamber (27) and a quenching group for accelerating water cooling, the cooling chamber (27) being arranged in the eye protection frame (7), a water inlet being arranged on the outer side of the top wall of the eye protection frame (7), the water inlet being provided with a solenoid valve, and the quenching group being used for cooling water.

6. The device for cutting the outer diameter of an induced draft fan impeller according to claim 5, characterized in that: The quenching group comprises a storage chamber (28), a winding roller (29), a winding motor (30), a winding rope (31), a plurality of non-woven bags (32) and a control component (33); a control port is provided between the storage chamber (28) and the cooling chamber (27); the control component is used to block / open the control port; the winding roller (29) is rotatably arranged in the storage chamber (28); the winding motor (30) controls the rotation of the winding roller (29); a plurality of non-woven bags (32) are tied to the winding rope (31); and sodium acetate particles are contained in the non-woven bags (32).

7. The device for cutting the outer diameter of an induced draft fan impeller according to claim 6, characterized in that: The cleaning assembly comprises a coating section for coating the damaged part and a heating section, the coating section comprises a coating box (34) which is lifted and lowered in the eye protection frame (7), a coating plate (35) which is rotatably arranged at the bottom of the coating box (34), an extrusion section and a wiping piece (38) which is arranged at the bottom of the coating plate (35), the coating box (34) is filled with solid vaseline, the extrusion section is used to extrude the vaseline in the coating box (34) onto the wiping piece (38), the heating section is used to heat the coating plate (35), and one end of the coating box (34) facing the coating plate (35) is opened.

8. The device for cutting the outer diameter of an induced draft fan impeller according to claim 7, characterized in that: The extrusion part comprises an extrusion plate (36) and an extrusion electric push rod (37); the extrusion plate (36) is movably arranged in the coating box (34); and the extrusion electric push rod (37) is used to extrude the vaseline in the coating box (34).

9. The device for cutting the outer diameter of an induced draft fan impeller according to claim 8, characterized in that: The heating part comprises a detection tube (39), a sliding tube (40), a temperature sensor (41) and a hose (42); the detection tube (39) is arranged in the cooling cavity (27); the sliding tube (40) slides in the detection tube (39); a detection port (43) is arranged on one side of the sliding tube (40); the temperature sensor (41) is arranged in the sliding tube (40); the sliding tube (40) is located in the detection tube (39) in an initial state; the hose (42) is arranged on the back side of the cooling cavity (27) and is used to connect the cooling cavity (27) and the inner cavity of the coating plate (35); the initial position of the coating plate (35) is lower than the highest end of the cooling cavity (27).

10. The device for cutting the outer diameter of an induced draft fan impeller according to claim 6, characterized in that: The cooling chamber (27) is also provided with a waste liquid port and a waste liquid pipe (44), and the waste liquid pipe (44) is also provided with a solenoid valve.

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