A detection and cleaning device for bell jar hoods

Abstract

The application relates to the technical field of overhauling equipment, and discloses a detection and cleaning device for a bell-shaped hood, which comprises a conical head, a connecting rod, a handle, a fixer, a driving device and a control device; the conical head is connected to one end of the connecting rod and is of a hollow structure, grooves are uniformly arranged on the outer side of the conical head, and the conical head is used for detecting and cleaning the bell-shaped hood; one end of the connecting rod is connected to the conical head, and the other end of the connecting rod is fixed on the handle; a gas cylinder is arranged at the tail end of the connecting rod; the part of the connecting rod close to the conical head is bent downwards, and the outer side of the bent part is provided with the fixer; the fixer is fixed on the connecting rod and is used for fixing a marking tool; and the handle is of a hollow structure. The conical head with the grooves is arranged to detect and clean the hood, the marking process is integrated into the detection and cleaning process by using the fixer, the working efficiency is improved, the gas cylinder is arranged on the connecting rod to realize the stretching and retracting of the connecting rod, the personnel operation is facilitated, and a foundation is laid for the safe operation in the later period.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance equipment, in particular to a detection and cleaning device for a bell-type hood. Background Art

[0002] The main function of a circulating fluidized bed boiler is to separate a large amount of high-temperature solid material from the air flow and return it to the combustion chamber to maintain a stable fluidized state in the combustion chamber, ensuring that the fuel and desulfurizer circulate, burn and react repeatedly to improve combustion efficiency and desulfurization efficiency.

[0003] The hood is a key component of a circulating fluidized bed boiler. Its performance directly impacts the fluidization quality of the fluidized bed material, as well as the flow, combustion, and heat transfer within the fluidized bed, ultimately affecting the entire furnace process. In recent years, the quality of incoming coal has fluctuated significantly. During long-term boiler operation, the small holes around the bell-shaped hood within the furnace are prone to varying degrees of clogging and wear, leading to increased apertures. This indirectly causes fluctuations in the pressure and flow of the primary air entering the furnace, leading to abnormal fluidization of the material within the furnace and compromising the safe and stable operation of the boiler.

[0004] Traditional bell-type hood inspection lacks special inspection equipment. Workers rely on their experience to inspect and clean the hood, which is time-consuming and laborious and lacks standards, which is not conducive to the long-term safe operation of the boiler. Summary of the Invention

[0005] The embodiment of the present invention provides a bell-shaped hood detection and cleaning device, which aims to solve the problem in traditional hood detection technology that personnel have no detection equipment, the detection and cleaning operations are inconvenient, time-consuming and labor-intensive.

[0006] In order to achieve the above-mentioned object, the present invention provides a detection and cleaning device for a bell-type hood, characterized in that it comprises:

[0007] Cone heads, connecting rods, handles, holders, drive units and controls;

[0008] The conical head is connected to one end of the connecting rod. The conical head is a hollow structure with grooves evenly arranged on the outside. The conical head is used to detect and clean the bell-shaped hood.

[0009] One end of the connecting rod is connected to the conical head, and the other end of the connecting rod is connected to the cylinder; the tail end of the cylinder is fixed to the handle; the portion of the connecting rod close to the conical head is bent downward, and the fixator is provided on the outside of the bent portion;

[0010] The fixer is fixed on the connecting rod, and the fixer is used to fix the marking tool;

[0011] The handle is a hollow structure.

[0012] Furthermore, the conical head further comprises:

[0013] Through holes are evenly arranged in the groove, and the shapes of the through holes include round and square; the maximum diameter of the conical head is 2 cm, and the height is the same as the depth of the hood aperture; gear teeth are provided at the large end surface of the conical head, and a bearing is provided at the center position.

[0014] Furthermore, the connecting rod is a hollow structure, and a driving device is provided on the connecting rod near the conical head, and the driving device is used to drive the conical head to rotate.

[0015] Furthermore, the connecting rod also includes: a compressed air pipeline; one end of which is connected to the cylinder; the compressed air pipeline is arranged in the handle, and compressed air flows into or out of the cylinder through the compressed air pipeline.

[0016] Furthermore, the connecting rod further comprises: a cleaning air pipeline and an adapter;

[0017] The adapter is provided on the connecting rod and is close to the bent portion of the connecting rod;

[0018] One end of the sweep air pipeline is connected to the adapter, and the sweep air pipeline is used to pass sweep air into the conical head.

[0019] Furthermore, the fixture includes: a clamp and a tension knob, the clamp is located at the upper part of the fixture, and the clamp is used to clamp and fix the marking tool; the tension knob is arranged at the lower end of the fixture and close to the connecting rod, and the tension knob is used to control the tightening and loosening of the clamp.

[0020] Furthermore, the handle includes: anti-slip textures provided on the surface.

[0021] Furthermore, the handle also includes: a lock for quickly connecting the handle to another detection and cleaning device for the bell-shaped hood.

[0022] Furthermore, the driving device includes: a gear and a driving module;

[0023] The gear is located at the top of the driving device, and the gear is engaged with the gear teeth at the large end surface of the conical head;

[0024] The driving module is used to drive the gear to rotate.

[0025] Furthermore, the control device includes: a control button, a compressed air control module and a purge air control module;

[0026] The compressed air control module is arranged on the connecting rod and close to the cylinder, and is used to control the flow of compressed air into and out of the cylinder;

[0027] The sweep air control module is arranged on the connecting rod and is close to the conical head

[0028] The control button is arranged on the handle and is used to control the opening and closing of the control module.

[0029] Compared with the prior art, the embodiment of the present invention is a detection and cleaning device for a bell-type hood, and its beneficial effects are as follows: a conical head, a connecting rod, a handle, a fixer, a drive device and a control device are provided; the conical head is connected to one end of the connecting rod, and the conical head is a hollow structure with grooves evenly provided on the outside; one end of the connecting rod is connected to the conical head, and the other end is fixed to the handle; a cylinder is provided at the tail end of the connecting rod; the connecting rod is bent downward on the side close to the conical head, and a fixer is provided on the outside of the bent part; the fixer fixes the marking tool; and the handle adopts a hollow structure. The hollow structure of the conical head reduces the weight of the conical head, and the grooves provided on the conical head can facilitate the cleaning of impurities out of the hood when cleaning the hood; the cylinder provided at the tail end of the connecting rod can realize the extension and retraction of the connecting rod, which is convenient for personnel operation and reduces labor intensity; the fixer is provided to fix the marking tool to facilitate marking the hood that needs to be replaced; the handle is provided as a hollow structure, which can reduce the weight of the entire device and reserve a channel for the cylinder to enter the gas.

[0030] The through hole provided in the conical head facilitates the exhaust of air entering the conical head, and when cleaning the hood, impurities are removed with air assistance. The gear teeth, drive device and control device realize the combination of rotary cleaning of the conical head and air cleaning, which is beneficial for clearing blockages deposited in the hood.

[0031] During the hood inspection and cleaning operation, this device combines inspection, cleaning and marking in one, and multiple tasks can be completed simultaneously, which is convenient for improving the efficiency of boiler maintenance operations. The setting of the cylinder realizes the position control of the conical head, reduces the difficulty of personnel operation, ensures that all apertures in the hood are unobstructed, and lays the foundation for the safe operation of the unit in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of a bell-type hood detection and cleaning device according to an embodiment of the present invention;

[0033] Figure 2 It is a side view of a detection and cleaning device for a bell-type hood according to an embodiment of the present invention;

[0034] Figure 3 yes Figure 2 Cross-sectional view in the direction of A.

[0035] In the figure: 100, hood detection and cleaning device; 110, conical head; 111, groove; 112, through hole; 113, gear teeth; 114, bearing; 120, connecting rod; 121, cylinder; 1211, quick exhaust valve; 122, compressed air pipeline; 123, cleaning air pipeline; 124, adapter; 130, handle; 131, anti-slip groove; 132, lock; 140, fixer; 141, clamp; 142, tension knob; 143, marking tool; 150, drive device; 151, drive module; 152, gear; 161, first control button; 162, second control button; 163, third control button; 164, compressed air control module; 165, cleaning air control module. DETAILED DESCRIPTION

[0036] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0037] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] Boilers No. 4 and No. 5 at the power plant are HG-465 / 13.7-L.PM7 ultra-high-pressure, naturally circulating fluidized-bed drum boilers manufactured by Harbin Boiler Plant. Boiler No. 4 was commissioned in July 2003, and Boiler No. 5 in September 2003. These boilers feature a single furnace, membrane water-cooled walls, balanced ventilation, single-stage reheating, a suspended structure, solid slag removal, and an all-steel frame. They are located outdoors and are fully enclosed below the nine-meter operating floor. Circulating materials are separated by high-temperature adiabatic cyclones, and the air distribution system utilizes water-cooled air distribution plates and a large-diameter bell-shaped hood.

[0041] Due to the long-term operation of the boiler and the significant changes in the quality of the coal entering the plant in recent years, the small holes around the bell-shaped hoods in the furnace have shown varying degrees of blockage and wear, leading to increased apertures. The hood is a key component of the circulating fluidized bed boiler, and its performance directly affects the fluidization quality of the fluidized bed material, as well as the flow, combustion, and heat transfer within the fluidized bed, thus affecting the entire furnace process. However, traditional bell-shaped hood inspections lack dedicated testing equipment, and inspection and cleaning rely on worker experience. This is laborious and lacks standardization, which is detrimental to the long-term safe operation of the boiler.

[0042] Therefore, it is necessary to propose a bell-shaped hood detection and cleaning device to solve the current problems.

[0043] See Figure 1 As shown in Figure 2, a preferred embodiment of the present invention is a bell-shaped hood inspection and cleaning device, comprising: a conical head 110, a connecting rod 120, a handle 130, a fixture 140, a drive device 150, and a control device. The conical head 110 is connected to one end of the connecting rod 120. The conical head 110 is a hollow structure with grooves 111 evenly arranged on the outside. The conical head 110 is used to inspect and clean the bell-shaped hood. One end of the connecting rod 120 is connected to the conical head 110, and the other end is fixed to the handle 130. A cylinder 121 is provided at the rear end of the connecting rod 120. The portion of the connecting rod 120 near the conical head 110 is bent downward, and a fixture 140 is provided on the outside of the bent portion. The fixture 140 is fixed to the connecting rod 120 and is used to fix a marking tool 143. The handle 130 is a hollow structure.

[0044] Specifically, the conical head 110 is the primary component used for inspecting and cleaning hoods. It's fixed to one end of a connecting rod 120. When a cylinder 121, mounted at the end of the connecting rod 120, drives the connecting rod 120 forward or backward, the connecting rod 120 drives the conical head 110 forward and backward. A retainer 140 is attached to the outside of the curved portion of the connecting rod 120. When a hood needs replacement, the handle 130 is rotated to reorient the conical head 110, aligning retainer 140 with the hood, allowing the marking tool to be used to mark the hood.

[0045] As can be understood, using the conical head 110 to inspect and clean the hood simultaneously reduces maintenance time and labor intensity. Using the cylinder 121 to control the movement of the conical head 110 makes it smoother, reducing damage to the hood caused by vibration during cleaning. Using the fixture 140 integrates the marking process into the inspection and cleaning process, further reducing operation time and improving work efficiency.

[0046] In some embodiments of the present application, through holes 112 are evenly arranged in the groove 111, and the shapes of the through holes 112 include round and square; the maximum diameter of the conical head 110 is 2 cm, and the height is the same as the depth of the hood aperture; gear teeth are provided at the large end face of the conical head 110, and a bearing 114 is provided at the center position.

[0047] Specifically, if the diameter of the conical head 110 is 2 cm, the standard inner diameter of a small hole in the hood, and the conical head 110 fits neatly into the hole without any gaps, then the inner diameter of the hole is considered to be acceptable and has not been worn or enlarged. If all the small holes around the hood are of acceptable size, then the hood can be used normally and does not need to be replaced. The triangular height of the conical head 110 is the depth of the hood's small aperture. During use, the hood inspection and cleaning device 100 should be inserted into the aperture just enough to make the triangular bottom surface flush with the edge of the small aperture. This is the normal depth, and it is determined that there is no debris inside. If the insertion is shallow, it is determined that there is still debris inside and the small hole needs to be cleaned.

[0048] Specifically, the gear teeth 113 provided at the large end surface of the conical head 110 can provide a force point for the rotation of the conical head 110, and the bearing 114 provided in the middle can reduce the friction between the conical head 110 and the connecting rod 120 when rotating, thereby reducing the rotation resistance.

[0049] It is understood that the groove 111 provided on the conical head 110 increases the friction area between the conical head 110 and impurities in the small hole, which is conducive to quickly cleaning impurities in the small hole. The conical head 110 is provided with a through hole 113 within the groove 112, which can exhaust air entering the conical head 110 through the through hole. When the conical head 110 is rotated to clean impurities in the hood, fine dust and impurities can be blown out of the hood, thereby accelerating the hood cleaning efficiency. The provision of gear teeth 113 and bearings 114 can provide greater torque for the conical head 110, accelerating cleaning efficiency.

[0050] In some embodiments of the present application, Figure 3As shown, connecting rod 120 is a hollow structure. A drive device 150 is provided near conical head 110 on connecting rod 120. Drive device 150 is used to drive conical head 110 to rotate. Connecting rod 120 is also provided with a compressed air line 122. One end of compressed air line 122 is connected to cylinder 121, and the other end is filled with compressed air. Compressed air line 122 is arranged within the hollow structure of handle 130. Connecting rod 120 is also provided with a purge air line 123 and an adapter 124. Adapter 124 is provided on connecting rod 120 near the bend of connecting rod 120. One end of purge air line 123 is connected to adapter 124, and purge air line 123 is used to pass purge air into conical head 110.

[0051] Specifically, drive device 151 is mounted on connecting rod 120 and contacts the gear teeth 113 of conical head 110. Drive device 151 provides power to rotate conical head 110. Compressed air line 122 connects to cylinder 121. When air is introduced, cylinder 121 extends under the thrust of the air, stretching the connecting rod and thus moving conical head 110 forward. When air is released, cylinder 121 contracts, driving conical head 110 backward. The length and diameter of cylinder 121 can be adjusted according to actual needs. Purge air line 123 connects to adapter 124, which in turn connects to connecting rod 120. Connecting rod 120 is a hollow structure. When gas enters connecting rod 120 through purge air line 123, connecting rod 120 passes the air into the internal cavity of conical head 110, where it is finally discharged through through-hole 112 in groove 111 of conical head 110.

[0052] It is understandable that the cylinder 121 is provided at the connecting rod 120 to realize the contraction of the connecting rod 120. The connecting rod 120 is retractable, which is convenient for the cleaning personnel to rise and lower, avoiding long-term, continuous monitoring of the personnel and causing fatigue. The compressed air pipeline 122 is provided to hide the cylinder 121 connecting pipeline inside the hood detection and cleaning device 100, avoiding the problem of too many parts on the detection and cleaning device 100 causing the device to be cumbersome to use. At the same time, the compressed air pipeline 122 is wrapped with the handle 130, which to a certain extent reduces the wear and tear caused by long-term use of the compressed air pipeline 122.

[0053] In some embodiments of the present application, the fixer 140 includes: a clamp 141 and a tension knob 142, the clamp 141 is located at the upper part of the fixer 140, and the clamp 142 is used to clamp the fixed marking tool 143; the tension knob 142 is set at the lower end of the fixer 140 and close to the connecting rod 120, and the tension knob 142 is used to control the tightening and loosening of the clamp 141.

[0054] Specifically, the fixer 140 is provided on the back of the bent portion of the connecting rod 120, so as to facilitate the fixing of objects used for marking, such as chalk and talc. During the monitoring process, if a hood that needs to be replaced is found, the inspector only needs to hold the hood inspection and cleaning device 100 in his hand and turn it over, and use the chalk on the back to make a mark on the surface of the hood. There is no need to loosen your hand separately and use chalk to make another mark. The provision of the clamp 141 and the tension knob 142 can increase the scope of use of the fixer 140. When replacing the marking tool, the marking tool 143 can be replaced by rotating the tension knob 142 to set the clamp 141 in a relaxed state, and then the clamp 141 can clamp the marking tool 143 to complete the replacement by rotating the tension knob 142 in the opposite direction.

[0055] It is understood that the provision of the holder 140 integrates the marking process with the inspection and cleaning process, reducing the number of steps and improving the efficiency of the hood maintenance operation. The provision of the clamp 141 and the tension knob 142 expands the scope of use of the holder 140 and facilitates the replacement of the marking tool 143 at any time during operation.

[0056] In some real-time examples of the present application, the surface of the handle 130 is provided with anti-slip grooves 131 ; the tail of the handle can be connected to an air pipe, which is used to connect compressed air to the compressed air pipeline 122 .

[0057] Specifically, handle 130 is made of materials such as aluminum and polyethylene. It is lightweight and features anti-slip patterns 131 on its surface to increase contact area. An air pipe at the rear of handle 130 allows compressed air to flow into compressed air line 122, controlling the contraction and extension of cylinder 121.

[0058] In some real-time examples of the present application, the handle 130 further includes a lock buckle 132 , and the lock hole 132 is provided on one side of the tail of the handle 130 for connecting another hood detection and cleaning device 100 .

[0059] Specifically, a single hood inspection and cleaning device 100 is equipped with a connecting lock 132 on the rear of the handle 130, allowing two hood inspection and cleaning devices 100 to be combined into a set. The opening angle between the two devices is determined by the distance between two adjacent small holes in the hood. A person can hold one set in each hand, and four devices in both hands simultaneously for inspection or cleaning, greatly improving work efficiency.

[0060] In some real-time examples of the present application, the driving device 150 includes: a gear 152 and a driving module 151; the gear 152 is located at the top of the driving device 150, and the gear 152 is engaged with the gear teeth 113 at the large end surface of the conical head 110; the driving module 151 is used to drive the gear 152 to rotate.

[0061] Specifically, a gear 152 is provided at the head of the driving device 150. When the driving device 150 provides power, the gear 152 rotates. Since the gear 152 engages with the gear teeth 113 at the large end surface of the conical head 110, the conical head 110 is driven to rotate, thereby achieving the purpose of rotating the conical head 110 to clean the wind hood.

[0062] It can be understood that the use of gear 152 transmission can provide a larger torque for the conical head 110, making it more convenient and faster to clean impurities and accumulated dust, and realizing the rotational removal of impurities in the hood. The groove 111 on the conical head 110 can bring impurities or dust out of the small hole when rotating, and the cleaning effect is more obvious.

[0063] In some embodiments of the present application, the control device includes: control buttons, a compressed air control module 164, and a purge air control module 165. The compressed air control module 164 is disposed on the connecting rod 120 and close to the compressed air pipeline 122, and is used to control the flow of compressed air into and out of the compressed air pipeline 122; the purge air control module 165 is disposed on the purge air pipeline 123; the control buttons include a first control button 161, a second control button 162, and a third control button 163. The control buttons are disposed on the handle 130. The first control button 161 is used to control the opening and closing of the compressed air control module 164; the second control button 162 is used to control the opening and closing of the purge air control module 165; and the third control button 163 is used to control the opening and closing of the drive device 150.

[0064] Specifically, in order to facilitate the control of the detection and cleaning device for the bell-type hood, the control device is provided with three control modules to respectively control the inlet and outlet of the compressed air in the compressed air pipeline; the opening and closing of the cleaning air pipeline and the start and stop of the driving device, and different control buttons are provided for the corresponding control modules.

[0065] Specifically, when the device needs to be extended or raised, the first control button 161 is pressed, the compressed air control module 164 is turned on, and compressed air is introduced into the cylinder 121, causing the cylinder 121 to extend, driving the conical head 110 to move, completing the extension and raising of the device. When the device needs to be shortened or lowered, the first control button 161 is pressed again, the compressed air control module 164 is turned off, and the air in the cylinder 121 is discharged from the cylinder through the quick exhaust valve 1211, reducing the pressure in the cylinder 121 and causing the cylinder 121 to contract, driving the conical head 110 to move, completing the shortening or lowering of the device.

[0066] Specifically, when the conical head needs to be installed for cleaning, the second control button 162 is pressed, and the sweep air control module 165 is turned on. The sweep air enters the connecting rod 120 through the sweep air pipe 123 and the adapter 124, and then enters the conical head 110, and is finally discharged through the through hole 112 in the groove 111 of the conical head 110. The cross-sectional area of ​​the sweep air pipe 123 is larger than the sum of the cross-sectional areas of all the through holes 112 in the groove 111 of the conical head 110, which helps to increase the pressure of the sweep air. When the device needs to be closed for cleaning, the second control button 162 is pressed again, and the sweep air control module 165 is closed. The sweep air no longer flows into the conical head 110, and the shutdown is completed.

[0067] Specifically, when the conical head 110 needs to rotate for cleaning, the drive button is pressed, and the circuit of the drive module 151 in the drive device 150 is connected. The drive module 151 starts to move, driving the gear 152 to rotate, and the gear 152 drives the conical head 110 to move for cleaning. When the rotation needs to be stopped, the third control button 163 is pressed again, and the circuit of the drive module 151 in the drive device 150 is disconnected, the drive module 151 stops moving, and the gear 152 loses power and gradually stops rotating, and the conical head 110 also stops moving.

[0068] The specific implementation process is as follows: when performing the inspection and cleaning of the bell-type hood, first use the holder 140 to fix the marking tool 143, and then connect the cleaning air pipeline 123 of the equipment and the compressed air pipeline 122 to the on-site air supply device. Use the first control button 161 to extend the conical head 110 to the required position, and place the conical head 110 into the small hole of the hood. If the conical head fits into the small hole without any gap, it is judged that the inner diameter of the small hole is qualified and has not been worn or enlarged. If the small holes around the hood are of qualified size, it is judged that the hood can be used normally and does not need to be replaced. If the small hole size is too large, it means that the hood needs to be replaced. Turn the handle 130 and use the marking tool 143 fixed on the holder 140 to mark the edge of the hood.

[0069] When cleaning, the conical head 110 is inserted into the aperture just enough to make the triangular bottom surface flush with the edge of the small aperture, which is the normal depth, and it is judged that there is no residue inside. If it is inserted shallowly, it is judged that there is still residue inside and the small hole needs to be cleaned. At this time, press the third control button 163 and the second control button 162, and the conical head 110 rotates under the drive device 150. The gas in the conical head 110 is discharged to the outside through the through hole 112 on the groove 111 to clean the impurities until the triangular bottom surface is flush with the edge of the small aperture, and the cleaning work is completed. Press the third control button 163 and the second control button 162 again to stop rotation and cleaning. Use the first control button 161 to control the conical head 110 to inspect and clean the next wind hood, and repeat the above operations until the wind hood inspection and cleaning operations are completed.

[0070] In summary, an embodiment of the present invention provides a detection and cleaning device for a bell-type hood, which is provided with a conical head, a connecting rod, a handle, a fixer, a drive device and a control device; the conical head is connected to one end of the connecting rod, and the conical head is a hollow structure with grooves evenly arranged on the outside; one end of the connecting rod is connected to the conical head, and the other end is fixed to the handle; a cylinder is provided at the tail end of the connecting rod; the connecting rod is bent downward on the side close to the conical head, and a fixer is provided on the outside of the bent part; the fixer fixes the marking tool; and the handle adopts a hollow structure. The hollow structure of the conical head reduces the weight of the conical head, and the grooves provided on the conical head can facilitate the cleaning of impurities out of the hood when cleaning the hood; the cylinder provided at the tail end of the connecting rod can realize the extension and retraction of the connecting rod, which is convenient for personnel operation and reduces labor intensity; the fixer is provided to fix the marking tool to facilitate marking the hood that needs to be replaced; the handle is provided as a hollow structure, which can reduce the weight of the entire device and reserve a channel for the cylinder to enter the gas;

[0071] The through hole in the conical head facilitates the removal of air entering the conical head, making it faster to clean the hood with air-assisted cleaning of impurities. The gear teeth, drive device, and control device combine the rotational cleaning of the conical head with the air cleaning, facilitating the removal of clogged deposits within the hood.

[0072] During the inspection and cleaning operation of the hood, this device combines inspection, cleaning and marking in one, and multiple tasks can be completed simultaneously, which is convenient for improving the efficiency of boiler maintenance operations. The setting of the compression rod realizes the position control of the conical head, reduces the difficulty of personnel operation, ensures that all apertures in the hood are unobstructed, and lays the foundation for the safe operation of the unit in the later stage.

[0073] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A bell-shaped hood detection and cleaning device, characterized in that: include: Cone heads, connecting rods, handles, holders, drive units and controls; The conical head is connected to one end of the connecting rod. The conical head is a hollow structure with grooves evenly arranged on the outside. The conical head is used to detect and clean the bell-shaped hood. One end of the connecting rod is connected to the conical head, and the other end of the connecting rod is connected to the cylinder; the tail end of the cylinder is fixed to the handle; the portion of the connecting rod close to the conical head is bent downward, and the fixator is provided on the outside of the bent portion; The fixer is fixed on the connecting rod, and the fixer is used to fix the marking tool; The handle is a hollow structure. The conical head also includes: The groove is evenly arranged with through holes, and the shapes of the through holes include circular and square. The through holes are used to discharge the air in the conical head. The maximum diameter of the conical head is 2 cm, and the height is the same as the depth of the hood aperture. The large end surface of the conical head is provided with gear teeth, and the center position is provided with a bearing. The connecting rod is a hollow structure. A driving device is provided on the connecting rod near the conical head. The driving device is used to drive the conical head to rotate.

2. The bell-type hood detection and cleaning device according to claim 1, characterized in that: The connecting rod further includes: a compressed air pipeline; one end of which is connected to the cylinder; the compressed air pipeline is arranged in the handle, and compressed air flows into or out of the cylinder through the compressed air pipeline.

3. The bell-type hood detection and cleaning device according to claim 2, characterized in that: The connecting rod further includes: a cleaning air pipeline and an adapter; The adapter is provided on the connecting rod and is close to the bent portion of the connecting rod; One end of the sweep air pipeline is connected to the adapter, and the sweep air pipeline is used to pass sweep air into the conical head.

4. The bell-type hood detection and cleaning device according to claim 1, characterized in that: The fixer includes: a clamp and a tension knob, the clamp is located at the upper part of the fixer, and the clamp is used to clamp and fix the marking tool; the tension knob is arranged at the lower end of the fixer and close to the connecting rod, and the tension knob is used to control the tightening and loosening of the clamp.

5. The bell-type hood detection and cleaning device according to claim 2, characterized in that: The handle includes: a surface provided with anti-slip lines.

6. The bell-type hood detection and cleaning device according to claim 5, characterized in that: The handle further comprises: a lock for quickly connecting the handle to another detection and cleaning device for the bell-shaped hood.

7. The bell-type hood detection and cleaning device according to claim 1, characterized in that: The driving device includes: a gear and a driving module; The gear is located at the top of the driving device, and the gear is engaged with the gear teeth at the large end surface of the conical head; The driving module is used to drive the gear to rotate.

8. The bell-type hood detection and cleaning device according to claim 1, characterized in that: The control device includes: a control button, a compressed air control module and a purge air control module; The compressed air control module is arranged on the connecting rod and close to the cylinder, and is used to control the flow of compressed air into and out of the cylinder; The sweep air control module is disposed on the connecting rod and is adjacent to the conical head; The control button is arranged on the handle and is used to control the opening and closing of the compressed air control module, the cleaning air control module and the driving device.

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