Dry fog dust removal system and operation method

Abstract

The invention discloses a dry fog dust removal system which comprises a guide cylinder internally provided with a guide cavity, the axial front end of the guide cylinder is communicated with a spray head, the front end of the spray head is provided with a nozzle for spraying air fog, and the dry fog dust removal system further comprises a water supply pipe capable of conveying purified water and an air supply pipe capable of conveying high-pressure air. The water supply pipe and the air supply pipe are respectively communicated with the upstream of the nozzle; an ejector pin is movably arranged in the guide cavity, the front end of the ejector pin can be inserted into the spray head in an aligned mode, and a cleaning driving device capable of driving the ejector pin to reciprocate front and back in the axial direction is arranged at the axial rear end of the guide cylinder. The cleaning driving device can drive the ejector pin to axially move forwards, so that the front end part of the ejector pin can be aligned and inserted into the nozzle and is in clearance fit with the inner wall of the nozzle; the cleaning driving device can further drive the ejector pin to axially move backwards so that the front end of the ejector pin can be pulled out of the nozzle. The invention further discloses a treatment method applying the dry fog dust removal system.

Description

Technical Field

[0001] The present invention relates to the technical field of dry mist dust removal equipment and devices for coal transportation systems, and in particular to a dry mist dust removal system. The present invention also relates to an operating method for the dry mist dust removal system. Background Art

[0002] In general coal transportation systems or other system equipment operating environments where dust may exist, dry fog dust removal systems are usually equipped to implement spray treatment on the dust environment to suppress dust.

[0003] Correspondingly, after the existing supporting dry fog dust removal system has been running for a period of time, the nozzles of the system will generally become clogged, causing the nozzles and related supporting pipelines to fail to operate normally, and making normal spray treatment impossible to implement. In addition, since the actual installation location of the nozzle is usually inside the guide trough and other components of the equipment, it is not easy to be found on a daily basis. Therefore, in actual working conditions, once the nozzle blockage is discovered, it often causes serious dust pollution.

[0004] Especially when only the water circuit is blocked and the air circuit is operating normally, the dry fog system will spray high-pressure air to the dust-generating point, which will in turn aggravate the dust flying in the corresponding working environment and cause more serious environmental pollution problems. In addition, due to the short development cycle of nozzle blockage and the influence of factors such as the difficulty of nozzle installation location maintenance, the actual operation process of the blocked nozzle is more frequent, and the corresponding nozzle maintenance operation requires a lot of manpower, material resources and operation time, resulting in a sharp increase in the overall operation and maintenance costs of the entire dry fog dust removal system and even the supporting coal transportation system and other operating systems.

[0005] At present, the industry usually adopts measures to deal with nozzle blockage, such as improving the water quality of the dry mist dust removal system and adding filters to the dry mist dust removal system. However, improving the water quality of the water source has a very limited effect on suppressing and improving nozzle blockage in actual operations.

[0006] If the filter used in the dry mist dust removal system is operated under poor water quality, the supporting filter screen, filter element and other filtering functional parts will often fail quickly, which requires staff to manually replace the filter screen, filter element and other components frequently. However, the component structure of this type of filter used in large equipment is relatively complex, the assembly and disassembly of the components is cumbersome, the operation is difficult, and the operating efficiency is low, which has an adverse effect on the continuous operation of the related dry mist dust removal system.

[0007] Accordingly, if the filter operates at overpressure due to untimely replacement of filter elements, filter screens and other filter components, the filter screens, filter elements and other core components will be damaged, causing a large amount of large particle pollutants to be sent into the spray pipeline of the dry mist dust removal system, thereby causing secondary pollution of related components and working conditions, resulting in nozzle blockage, which in turn seriously affects the stable operation of the entire dry mist dust removal system.

[0008] In view of this, how to optimize the component structure of the dry mist dust removal system, avoid the failure of the dry mist dust removal operation caused by the blockage of its nozzle, ensure the stable and continuous operation of the dry mist dust removal system, and at the same time reduce the maintenance cost of the dry mist dust removal system and improve its inspection and maintenance efficiency are important technical problems that technical personnel in this field currently need to solve. Summary of the invention

[0009] The object of the present invention is to provide a dry mist dust removal system, which can effectively avoid the failure of dry mist dust removal operation caused by the blockage of its nozzle, ensure the stable and continuous operation of the dry mist dust removal system, and reduce the maintenance cost of the dry mist dust removal system and improve its inspection and maintenance efficiency. Another object of the present invention is to provide a dry mist dust removal system operation method for the above dry mist dust removal system.

[0010] In order to solve the above technical problems, the present invention provides a dry mist dust removal system, comprising a guide cylinder having a guide cavity therein, the axial front end of the guide cylinder is connected to a nozzle, the front end of the nozzle has a nozzle for spraying air mist, the dry mist dust removal system also includes a water supply pipe capable of conveying clean water and an air supply pipe capable of conveying high-pressure gas, the water supply pipe and the air supply pipe are respectively connected to the upstream of the nozzle;

[0011] An ejector is movably arranged in the guide cavity, the front end of the ejector can be inserted into the nozzle in a aligned manner, and the axial rear end of the guide cylinder is provided with a cleaning drive device capable of driving the ejector to reciprocate forward and backward along the axial direction;

[0012] The cleaning drive device can drive the ejector pin to move axially forward, so that the front end of the ejector pin can be inserted into the nozzle in alignment and fit with the inner wall gap of the nozzle;

[0013] The cleaning drive device can also drive the ejector pin to move axially backwards, so that the front end of the ejector pin is drawn out of the nozzle.

[0014] Preferably, a limiting block is provided in linkage with the rear portion of the ejector pin, and the front end surface of the limiting block can abut against the front end inner wall of the guide cavity.

[0015] Preferably, the cleaning drive device is a cylinder, and the ejector pin is linked to the action end of the cylinder.

[0016] Preferably, the limit block is linked to be connected between the action end of the cylinder and the ejector pin.

[0017] Preferably, the nozzle further comprises an atomizing box connected between the nozzle and the guide tube, the atomizing box comprises an atomizing chamber connected to the upstream of the nozzle, and the water supply pipe and the air supply pipe are respectively connected to the upstream of the atomizing chamber.

[0018] Preferably, a sealing ring sleeved on the outer periphery of the ejector pin is packaged and provided at the junction of the guide cavity and the atomization cavity, and the inner wall of the sealing ring is tightly fitted with the outer wall of the ejector pin.

[0019] Preferably, it further comprises a controller communicating and cooperating with the cleaning drive device, wherein the controller comprises a start-stop module and a timing module communicating and cooperating with each other.

[0020] Preferably, when the front end of the ejector pin is inserted into the nozzle with clearance fit, the aerosol conduction area of ​​the nozzle is 0.54 square millimeters;

[0021] After the ejector pin is pulled out of the nozzle, the aerosol conduction area of ​​the nozzle is 4.91 square millimeters.

[0022] The present invention also provides a dry mist dust removal system operation method, which is used for the dry mist dust removal system as described in any one of the above items, comprising the steps of:

[0023] The cleaning drive device is used to drive the ejector pin to move forward along the axial direction until the front end of the ejector pin is aligned and inserted into the nozzle and matches with the inner wall gap of the nozzle, so that the aerosol conduction area at the nozzle meets the spray processing requirements;

[0024] Clean water is introduced into the nozzle through the water supply pipe, and high-pressure gas is introduced into the nozzle through the air supply pipe, so that the clean water is atomized by the high-pressure gas and then sprayed out through the matching gap between the outer wall of the ejector pin and the inner wall of the nozzle, thereby implementing dry mist dust removal operation;

[0025] After the dry mist dust removal operation has been implemented for a period of time, or when the nozzle is clogged, the cleaning drive device is used to drive the ejector pin to move backward along the axial direction until the front end of the ejector pin is pulled out of the nozzle. At this time, the aerosol conduction area at the nozzle increases to the inner cavity cross-sectional area of ​​the nozzle, and then the water supply pipe is used to continuously introduce clean water into the nozzle, and at the same time, the air supply pipe is used to continuously introduce high-pressure gas into the nozzle, so that the clean water introduced into the nozzle forms a large-flow high-pressure water flow under the action of the high-pressure gas, and the large-flow high-pressure water flow is continuously ejected outward through the nozzle, so as to perform a flushing operation on the nozzle until the impurities clogged in the nozzle are removed, so that the nozzle is restored to be unobstructed;

[0026] After the nozzle is unblocked, the cleaning drive device is used to drive the ejector pin to move forward axially until the front end of the ejector pin is re-aligned and inserted into the nozzle and matched with the inner wall gap of the nozzle, so that the aerosol conduction area at the nozzle meets the spray processing requirements.

[0027] Preferably, the cleaning interval and cleaning operation time are set by using the timing module. When the continuous operation time of the dry mist dust removal system reaches the cleaning interval, the timing module sends a start instruction to the start-stop module. After receiving the start instruction, the start-stop module controls the cleaning drive device to move backward along the axial direction, until the front end of the ejector is pulled out of the nozzle, so as to perform a high-pressure water flow flushing operation on the nozzle.

[0028] When the duration of the high-pressure water flushing operation implemented on the nozzle reaches the cleaning operation time, the timing module sends a stop command to the start-stop module. After receiving the stop command, the start-stop module controls the cleaning drive device to move forward in the axial direction, so as to drive the ejector pin to move forward in the axial direction until the front end of the ejector pin is inserted into the nozzle and matches the inner wall gap of the nozzle to meet the spray operation requirements of the dry fog dust removal system.

[0029] Compared with the above-mentioned background technology, the dry mist dust removal system provided by the present invention, when performing dry mist dust removal operation under normal working conditions, uses a cleaning drive device to drive the ejector pin to move forward in the axial direction until the front end of the ejector pin is inserted into the nozzle and matches with the inner wall gap of the nozzle, so that the aerosol conduction area at the nozzle meets the spray processing requirements; clean water is introduced into the nozzle through a water supply pipe, and high-pressure gas is introduced into the nozzle through an air supply pipe at the same time, so that the clean water is atomized by the high-pressure gas and then sprayed out through the matching gap between the outer wall of the ejector pin and the inner wall of the nozzle to implement dry mist dust removal operation; when the dry mist dust removal operation has been implemented for a period of time, or when the nozzle is blocked, the cleaning drive device is used to drive the ejector pin to move backward in the axial direction until the front end of the ejector pin is inserted into the nozzle through the nozzle. The nozzle is then drawn out, at which time the aerosol conduction area at the nozzle increases to the cross-sectional area of ​​the inner cavity of the nozzle, and then the water supply pipe is used to continuously introduce clean water into the nozzle, and at the same time, the air supply pipe is used to continuously introduce high-pressure gas into the nozzle, so that the clean water introduced into the nozzle forms a large-flow high-pressure water flow under the action of the high-pressure gas, and the large-flow high-pressure water flow is continuously ejected outward through the nozzle, so as to perform a flushing operation on the nozzle until the impurities blocking the nozzle are removed, so that the nozzle is restored to be unobstructed; after the nozzle is restored to be unobstructed, the cleaning drive device is used to drive the ejector pin to move forward axially, until the front end of the ejector pin is re-aligned and inserted into the nozzle and matched with the inner wall gap of the nozzle, so that the aerosol conduction area at the nozzle meets the spray processing requirements. The dry mist dust removal system utilizes the axial reciprocating motion of the ejector pin to adjust the effective aerosol conduction area at the nozzle, so that when the ejector pin is inserted into the nozzle and the clearance is matched, the aerosol conduction area of ​​the nozzle is smaller to ensure the corresponding water purification atomization effect. After the ejector pin is pulled out of the nozzle, the nozzle can restore its original effective cross-sectional area of ​​the inner cavity, thereby significantly increasing the aerosol conduction area of ​​the nozzle. Thus, a large-flow high-pressure water flow is used to perform high-pressure flushing on the nozzle, so as to efficiently flush and remove impurities that clog the nozzle, and can use the high-pressure water flow to thoroughly flush the chamber and the inner wall of the pipeline at the nozzle and the nozzle, destroy the formation of calcium carbonate crystals and other types of scale, and prevent these impurities and scale from clogging the nozzle during the subsequent operation of the equipment. This type of high-pressure water flushing is used to clean the blocked impurities and efficiently dredge the nozzles, effectively avoiding the failure of dry mist dust removal operations due to nozzle blockage, and fully ensuring the stable and continuous operation of the dry mist dust removal system. During the operation, there is no need for frequent manual operations by staff, and the cleaning operation can be completed by relying only on the original air supply pipeline and water supply pipeline, which greatly improves the cleaning and maintenance efficiency of the nozzles and nozzles, significantly reduces the corresponding component overhaul and maintenance costs, and effectively reduces the difficulty of cleaning and maintenance operations of the nozzles and nozzles, so that the labor intensity of relevant staff can be reduced accordingly.

[0030] In addition, the present invention also provides an assembly and inspection method for the above-mentioned dry mist dust removal system, which effectively avoids the failure of the dry mist dust removal operation caused by the blockage of the nozzles and nozzles of the dry mist dust removal system by implementing each operation step in sequence, thereby ensuring the stable and continuous operation of the dry mist dust removal system, while reducing the maintenance cost of the dry mist dust removal system and improving its inspection and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A cross-sectional view of the assembly structure of a dry mist dust removal system provided in a specific embodiment of the present invention.

[0033] in:

[0034] 11-guide cylinder; 111-guide cavity; 112-thrust pin; 113-limiting block;

[0035] 12-spray head; 121-nozzle; 122-atomizing box; 123-atomizing chamber;

[0036] 13- Water supply pipe;

[0037] 14- air supply pipe;

[0038] 15-Cylinder. DETAILED DESCRIPTION

[0039] The core of the present invention is to provide a dry mist dust removal system, which can effectively avoid the failure of dry mist dust removal operation caused by the blockage of its nozzle nozzle, ensure the stable and continuous operation of the dry mist dust removal system, and at the same time reduce the maintenance cost of the dry mist dust removal system and improve its inspection and maintenance efficiency; it also provides a dry mist dust removal system operation method for the above-mentioned dry mist dust removal system.

[0040] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] Please refer to Figure 1 .

[0042] In a specific embodiment, the dry mist dust removal system provided by the present invention includes a guide cylinder 11 with a guide cavity 111 inside, the axial front end of the guide cylinder 11 is connected to a nozzle 12, and the front end of the nozzle 12 has a nozzle 121 for spraying air mist. The dry mist dust removal system also includes a water supply pipe 13 capable of conveying clean water and an air supply pipe 14 capable of conveying high-pressure gas. The water supply pipe 13 and the air supply pipe 14 are respectively connected to the upstream of the nozzle 12.

[0043] An ejector pin 112 is movably disposed in the guide cavity 111 , and the front end of the ejector pin 112 can be inserted into the nozzle 12 . The axial rear end of the guide cylinder 11 is provided with a cleaning driving device capable of driving the ejector pin 112 to reciprocate axially.

[0044] The cleaning drive device can drive the ejector pin 112 to move axially forward, so that the front end of the ejector pin 112 can be inserted into the nozzle 121 in alignment and fit with the inner wall gap of the nozzle 121 .

[0045] The cleaning drive device can also drive the ejector pin 112 to move axially backward, so that the front end of the ejector pin 112 is drawn out of the nozzle 121 .

[0046] During dry mist dust removal under normal working conditions, the cleaning drive device is used to drive the ejector pin 112 to move forward axially until the front end of the ejector pin 112 is aligned and inserted into the nozzle 121 and matches the inner wall gap of the nozzle 121, so that the aerosol conduction area at the nozzle 121 meets the spray processing requirements. Clean water is introduced into the nozzle 12 through the water supply pipe 13, and high-pressure gas is introduced into the nozzle 12 through the air supply pipe 14, so that the clean water is atomized by the high-pressure gas and then sprayed out through the matching gap between the outer wall of the ejector pin 112 and the inner wall of the nozzle 121, and the dry mist dust removal operation is implemented.

[0047] After the dry mist dust removal operation has been implemented for a period of time, or when the nozzle 121 is blocked, the cleaning drive device is used to drive the ejector pin 112 to move backward along the axial direction until the front end of the ejector pin 112 is pulled out of the nozzle 121. At this time, the aerosol conduction area at the nozzle 121 is increased to the inner cavity cross-sectional area of ​​the nozzle 121, and then the water supply pipe 13 is used to continuously introduce clean water into the nozzle 12, and at the same time, the air supply pipe 14 is used to continuously introduce high-pressure gas into the nozzle 12, so that the clean water introduced into the nozzle 12 forms a large-flow high-pressure water flow under the action of the high-pressure gas, and the large-flow high-pressure water flow is continuously ejected outward through the nozzle 121, so as to perform a flushing operation on the nozzle 121 until the impurities blocking the nozzle 121 are removed, so that the nozzle 121 is restored to be unobstructed. After the nozzle 121 is unobstructed, the cleaning drive device is used to drive the ejector pin 112 to move forward axially until the front end of the ejector pin 112 is re-aligned and inserted into the nozzle 121 and fits with the inner wall gap of the nozzle 121, so that the aerosol conduction area at the nozzle 121 meets the spray processing requirements.

[0048] The dry mist dust removal system utilizes the axial reciprocating motion of the ejector pin 112 to adjust the effective aerosol conduction area at the nozzle 121, so that when the ejector pin 112 is inserted into the nozzle 121 and the clearance is matched, the aerosol conduction area of ​​the nozzle 121 is smaller to ensure the corresponding water purification atomization effect. After the ejector pin 112 is pulled out of the nozzle 121, the nozzle 121 can restore its original effective cross-sectional area of ​​the inner cavity, thereby significantly increasing the aerosol conduction area of ​​the nozzle 121. Therefore, a high-pressure water flow with a large flow rate is used to perform high-pressure flushing on the nozzle 121, so as to efficiently flush and remove impurities that block the nozzle 121, and can use the high-pressure water flow to thoroughly flush the chamber and the inner wall of the pipeline at the nozzle 12 and the nozzle 121, destroy the formation of calcium carbonate crystals and other types of scale, and avoid these impurities and scale from clogging the nozzle 121 during the subsequent operation of the equipment.

[0049] This type of high-pressure water flow flushing is used to clean the blocked impurities and efficiently dredge the nozzle 121, effectively avoiding the failure of the dry mist dust removal operation due to the blockage of the nozzle 121 of the nozzle 12, and fully ensuring the stable and continuous operation of the dry mist dust removal system. In addition, there is no need for frequent manual operation by the staff during the operation. The cleaning operation can be completed by relying on the original air supply pipe 14 and the water supply pipe 13. There is no need to additionally equip functional devices such as filters and backwashing devices, which streamlines the equipment structure and reduces the equipment use cost. At the same time, the cleaning and maintenance efficiency of the nozzle 12 and the nozzle 121 is greatly improved, the corresponding component overhaul and maintenance costs are significantly reduced, and the difficulty of cleaning and maintenance operations of the nozzle 121 and the nozzle 12 is effectively reduced, so that the labor intensity of relevant staff can be reduced accordingly.

[0050] It should be noted that the air supply pipe 14 is connected to the downstream of an external air compressor or other air supply equipment, while the water supply pipe 13 is connected to the downstream of an external water source equipment. When performing a specific high-pressure water flow cleaning operation on the nozzle 121, the pressure of the gas delivered to the nozzle 12 can be controlled by a control valve or other control device on the air supply pipe 14. Considering the conventional operating requirements under most working conditions, it is appropriate to control the air pressure at the nozzle 12 to 4 to 10 bar. In addition, by reasonably adjusting the working matching distance between the outlet end of the nozzle 121 and the opposite workpiece, a high-momentum and more uniform high-pressure water jet can be obtained to further optimize the cleaning effect at the nozzle 121.

[0051] Correspondingly, the nozzle 121 and the spray head 12 can also be pulse-flushed through the valve control devices on the air supply pipe 14 and the water supply pipe 13, so as to further optimize the cleaning effect of the nozzle 121, thereby meeting the cleaning requirements of the nozzle 121 and the spray head 12 under different working conditions.

[0052] Specifically, the rear of the ejector pin 112 is linked with a limit block 113, and the front end surface of the limit block 113 can abut against the front end inner wall of the guide cavity 111. When the cleaning drive device drives the ejector pin 112 to move forward axially, when the front end surface of the limit block 113 abuts against the front end inner wall of the guide cavity 111, the ejector pin 112 will no longer move forward, thereby utilizing the abutment between the limit block 113 and the guide cavity 111 to prevent the ejector pin 112 from excessively moving forward, causing structural impact or damage to the nozzle 121 or the main structure of the spray head 12, thereby ensuring the reliable operation of the spray head 12 and the nozzle 121.

[0053] It is not difficult to understand that, for general working conditions, the ejector pin 112, the guide cavity 111 and the limit block 113 are all coaxially arranged with the nozzle 121, so as to ensure the structural adaptability of the ejector pin 112 and other components with the nozzle 121 and the nozzle 12 and other components, avoid rigid contact and non-operating damage between the moving parts, and further ensure the operating stability and safety of the dry mist dust removal system.

[0054] In addition, the cleaning drive device is a cylinder 15, and the ejector pin 112 is linked to the action end of the cylinder 15. The cylinder 15 has a simple and reliable structure and high action accuracy, which can fully ensure the axial drive efficiency and displacement control accuracy of the ejector pin 112.

[0055] Of course, other driving mechanisms such as a screw mechanism or a hydraulic cylinder that can realize axial reciprocating motion can also be used as the specific application type of the cleaning drive device. In principle, as long as it can meet the actual operation and use needs of the dry mist dust removal system, it can be used.

[0056] More specifically, the stopper 113 is linked to the action end of the cylinder 15 and the ejector pin 112. In practical applications, the stopper 113 can be connected to the action end of the cylinder 15 and the ejector pin 112 respectively through connecting pieces such as screws or bolts to complete the linkage assembly, thereby using the stopper 113 as a transition component between the action end of the cylinder 15 and the ejector pin 112, so that the component structural stress is appropriately optimized when the cylinder 15 drives the ejector pin 112 to reciprocate.

[0057] On the other hand, the nozzle 12 further includes an atomizing box 122 connected between the nozzle 121 and the guide tube 11, and the atomizing box 122 has an atomizing chamber 123 connected to the upstream of the nozzle 121, and the water supply pipe 13 and the air supply pipe 14 are respectively connected to the upstream of the atomizing chamber 123. The atomizing box 122 can serve as an action space for high-pressure gas and clean water, so as to optimize the jet atomization effect delivered to the nozzle 121, so that the spray and dust removal performance of the dry fog dust removal system can be correspondingly improved.

[0058] Furthermore, a sealing ring is encapsulated and arranged at the junction of the guide cavity 111 and the atomizing cavity 123, and the inner wall of the sealing ring is closely fitted with the outer wall of the atomizing cavity 112. The sealing ring can effectively ensure the relative structural sealing between the guide cavity 111 and the atomizing cavity 123, and prevent the airflow or water mist in the atomizing cavity 123 from entering the guide cavity 111, so as to prevent the relevant components in the guide cavity 111 from being adversely affected.

[0059] During actual installation, the sealing ring can be fixed at the end of the guide cavity 111 or the end of the atomizing cavity 123, and fit with the outer wall of the ejector pin 112 and slide fit; or the sealing ring can be linked to the outer wall of the ejector pin 112, and the outer wall of the sealing ring can fit with the front inner wall of the guide cavity 111 or the rear inner wall of the atomizing cavity 123 and slide fit. Of course, the specific assembly form and arrangement position of the sealing ring are not limited to the two types described above. The staff can flexibly select and adjust the specific assembly form of the sealing ring according to the actual working conditions and assembly conditions. In principle, as long as it can meet the actual application needs of the dry fog dust removal system, it can be used.

[0060] The dry mist dust removal system also includes a controller that communicates with the cleaning drive device, and the controller includes a start-stop module and a timing module that communicate with each other. When the equipment is running, the cleaning interval time and the cleaning operation time are set by using the timing module. When the continuous operation time of the dry mist dust removal system reaches the cleaning interval time, the timing module sends a start instruction to the start-stop module. After receiving the start instruction, the start-stop module controls the cleaning drive device to move, so as to drive the ejector pin 112 to move backward along the axial direction until the front end of the ejector pin 112 is pulled out of the nozzle 121, so as to implement a high-pressure water flow flushing operation on the nozzle 121.

[0061] When the duration of the high-pressure water flushing operation implemented on the nozzle 121 reaches the cleaning operation time, the timing module sends a stop command to the start-stop module. After receiving the stop command, the start-stop module controls the operation of the cleaning drive device to drive the ejector pin 112 to move forward axially until the front end of the ejector pin 112 is inserted into the nozzle 121 and cooperates with the inner wall gap of the nozzle 121 to meet the spray operation requirements of the dry fog dust removal system.

[0062] In addition, in specific assembly applications, for general working conditions and application requirements, when the front end of the ejector pin 112 is inserted into the nozzle 121 with clearance fit, the aerosol conduction area of ​​the nozzle 121 is 0.54 square millimeters; after the ejector pin 112 is pulled out of the nozzle 121, the aerosol conduction area of ​​the nozzle 121 is 4.91 square millimeters.

[0063] It is easy to understand that the above-mentioned aerosol conduction area is the area inside the nozzle 121 that allows airflow and water flow to pass through, and this area can be reduced when the ejector pin 112 is inserted into the nozzle 121, and can also be restored to a larger size after the ejector pin 112 is withdrawn from the nozzle 121. In this solution, the forward insertion and backward withdrawal of the ejector pin 112 are used to change the effective cross-sectional area of ​​the nozzle 121, so as to achieve different working effects of small cross-sectional area for spray dust removal and large cross-sectional area for high-pressure washing.

[0064] In a specific embodiment, the dry mist dust removal system operation method provided by the present invention adopts the dry mist dust removal system as described above, comprising the following steps:

[0065] First, the cleaning drive device is used to drive the ejector pin 112 to move forward axially until the front end of the ejector pin 112 is aligned and inserted into the nozzle 121 and matches the inner wall gap of the nozzle 121, so that the aerosol conduction area at the nozzle 121 meets the spray processing requirements.

[0066] Afterwards, clean water can be introduced into the nozzle 12 through the water supply pipe 13, and high-pressure gas can be introduced into the nozzle 12 through the air supply pipe 14, so that the clean water can be atomized by the high-pressure gas and sprayed out through the matching gap between the outer wall of the ejector pin 112 and the inner wall of the nozzle 121, thereby implementing dry mist dust removal operations.

[0067] After the dry mist dust removal operation has been implemented for a period of time, or when the nozzle 121 is blocked, the cleaning drive device is used to drive the ejector pin 112 to move backward along the axial direction until the front end of the ejector pin 112 is pulled out of the nozzle 121. At this time, the aerosol conduction area at the nozzle 121 is increased to the inner cavity cross-sectional area of ​​the nozzle 121, and then the water supply pipe 13 is used to continuously introduce clean water into the nozzle 12, and at the same time, the air supply pipe 14 is used to continuously introduce high-pressure gas into the nozzle 12, so that the clean water introduced into the nozzle 12 forms a large-flow high-pressure water flow under the action of the high-pressure gas, and the large-flow high-pressure water flow is continuously ejected outward through the nozzle 121, so as to perform a flushing operation on the nozzle 121 until the impurities blocking the nozzle 121 are removed, so that the nozzle 121 is restored to be unobstructed.

[0068] After the nozzle 121 is unobstructed, the cleaning drive device is used to drive the ejector pin 112 to move forward axially until the front end of the ejector pin 112 is re-aligned and inserted into the nozzle 121 and fits with the inner wall gap of the nozzle 121, so that the aerosol conduction area at the nozzle 121 meets the spray processing requirements.

[0069] In the operational application of the above-mentioned assembly detection method, the axial reciprocating motion of the ejector pin 112 is used to adjust the effective aerosol conduction area at the nozzle 121, so that when the ejector pin 112 is inserted into the nozzle 121 and the clearance is matched, the aerosol conduction area of ​​the nozzle 121 is smaller to ensure the corresponding water purification atomization effect. After the ejector pin 112 is pulled out of the nozzle 121, the nozzle 121 can restore its original effective cross-sectional area of ​​the inner cavity, thereby significantly increasing the aerosol conduction area of ​​the nozzle 121. Therefore, a high-pressure water flow with a large flow rate is used to perform high-pressure flushing on the nozzle 121, so as to efficiently flush and remove impurities that block the nozzle 121, and can use the high-pressure water flow to thoroughly flush the chamber and the inner wall of the pipeline at the nozzle 12 and the nozzle 121, destroy the formation of calcium carbonate crystals and other types of scale, and avoid these impurities and scale from clogging the nozzle 121 during the subsequent operation of the equipment. This type of high-pressure water flow flushing is used to clean the blocked impurities and efficiently dredge the nozzle 121, effectively avoiding the failure of the dry mist dust removal operation due to the blockage of the nozzle 121 of the nozzle 12, and fully ensuring the stable and continuous operation of the dry mist dust removal system. In addition, there is no need for frequent manual operation by the staff during the operation, and the cleaning operation can be completed by relying on the original air supply pipe 14 and water supply pipe 13, which greatly improves the cleaning and maintenance efficiency of the nozzle 12 and the nozzle 121, significantly reduces the inspection and maintenance costs of the corresponding components, and effectively reduces the difficulty of cleaning and maintenance operations of the nozzle 121 and the nozzle 12, so that the labor intensity of relevant staff can be reduced accordingly.

[0070] In another specific embodiment, the dry mist dust removal system operation method provided by the present invention adopts the dry mist dust removal system as described above, comprising the following steps:

[0071] First, the cleaning drive device is used to drive the ejector pin 112 to move forward axially until the front end of the ejector pin 112 is aligned and inserted into the nozzle 121 and matches the inner wall gap of the nozzle 121, so that the aerosol conduction area at the nozzle 121 meets the spray processing requirements.

[0072] Afterwards, clean water can be introduced into the nozzle 12 through the water supply pipe 13, and high-pressure gas can be introduced into the nozzle 12 through the air supply pipe 14, so that the clean water can be atomized by the high-pressure gas and sprayed out through the matching gap between the outer wall of the ejector pin 112 and the inner wall of the nozzle 121, thereby implementing dry mist dust removal operations.

[0073] If the dry mist dust removal system is equipped with a controller that communicates with the cleaning drive device, and the controller includes a start-stop module and a timing module that communicate with each other, the timing module is used to set the cleaning interval time and the cleaning operation time. When the continuous operation time of the dry mist dust removal system reaches the cleaning interval time, the timing module sends a start instruction to the start-stop module. After receiving the start instruction, the start-stop module controls the cleaning drive device to move, so as to drive the ejector pin 112 to move backward along the axial direction until the front end of the ejector pin 112 is pulled out of the nozzle 121, so as to perform a high-pressure water flow flushing operation on the nozzle 121.

[0074] When the duration of the high-pressure water flushing operation implemented on the nozzle 121 reaches the cleaning operation time, the timing module sends a stop command to the start-stop module. After receiving the stop command, the start-stop module controls the operation of the cleaning drive device to drive the ejector pin 112 to move forward axially until the front end of the ejector pin 112 is inserted into the nozzle 121 and cooperates with the inner wall gap of the nozzle 121 to meet the spray operation requirements of the dry fog dust removal system.

[0075] In the operational application of the above-mentioned assembly detection method, the axial reciprocating motion of the ejector pin 112 is used to adjust the effective aerosol conduction area at the nozzle 121, so that when the ejector pin 112 is inserted into the nozzle 121 and the clearance is matched, the aerosol conduction area of ​​the nozzle 121 is smaller to ensure the corresponding water purification atomization effect. After the ejector pin 112 is pulled out of the nozzle 121, the nozzle 121 can restore its original effective cross-sectional area of ​​the inner cavity, thereby significantly increasing the aerosol conduction area of ​​the nozzle 121. Therefore, a high-pressure water flow with a large flow rate is used to perform high-pressure flushing on the nozzle 121, so as to efficiently flush and remove impurities that block the nozzle 121, and can use the high-pressure water flow to thoroughly flush the chamber and the inner wall of the pipeline at the nozzle 12 and the nozzle 121, destroy the formation of calcium carbonate crystals and other types of scale, and avoid these impurities and scale from clogging the nozzle 121 during the subsequent operation of the equipment. This type of high-pressure water flow flushing is used to clean the blocked impurities and efficiently dredge the nozzle 121, effectively avoiding the failure of the dry mist dust removal operation due to the blockage of the nozzle 121 of the nozzle 12, and fully ensuring the stable and continuous operation of the dry mist dust removal system. In addition, there is no need for frequent manual operation by the staff during the operation, and the cleaning operation can be completed by relying on the original air supply pipe 14 and water supply pipe 13, which greatly improves the cleaning and maintenance efficiency of the nozzle 12 and the nozzle 121, significantly reduces the inspection and maintenance costs of the corresponding components, and effectively reduces the difficulty of cleaning and maintenance operations of the nozzle 121 and the nozzle 12, so that the labor intensity of relevant staff can be reduced accordingly.

[0076] In summary, the dry mist dust removal system provided in the present invention, during the dry mist dust removal operation under normal working conditions, uses a cleaning drive device to drive the ejector pin to move forward in the axial direction until the front end of the ejector pin is aligned and inserted into the nozzle and matches with the inner wall gap of the nozzle, so that the aerosol conduction area at the nozzle meets the spray processing requirements; clean water is introduced into the nozzle through a water supply pipe, and high-pressure gas is introduced into the nozzle through an air supply pipe at the same time, so that the clean water is atomized by the high-pressure gas and then sprayed out through the matching gap between the outer wall of the ejector pin and the inner wall of the nozzle to implement the dry mist dust removal operation; when the dry mist dust removal operation has been implemented for a period of time, or when the nozzle is blocked, the cleaning drive device is used to drive the ejector pin to move backward in the axial direction until the front end of the ejector pin is extracted from the nozzle. At this time, the aerosol conduction area at the nozzle increases to the cross-sectional area of ​​the inner cavity of the nozzle, and then the water supply pipe is used to continuously pass clean water into the nozzle, and at the same time, the air supply pipe is used to continuously pass high-pressure gas into the nozzle, so that the clean water passed into the nozzle forms a large-flow high-pressure water flow under the action of the high-pressure gas, and the large-flow high-pressure water flow is continuously ejected outward through the nozzle, so as to perform a flushing operation on the nozzle until the impurities blocking the nozzle are removed, so that the nozzle is restored to be unobstructed; after the nozzle is restored to be unobstructed, the cleaning drive device is used to drive the ejector pin to move forward axially until the front end of the ejector pin is re-aligned and inserted into the nozzle and matched with the inner wall gap of the nozzle, so that the aerosol conduction area at the nozzle meets the spray processing requirements. The dry mist dust removal system utilizes the axial reciprocating motion of the ejector pin to adjust the effective aerosol conduction area at the nozzle, so that when the ejector pin is inserted into the nozzle and the clearance is matched, the aerosol conduction area of ​​the nozzle is smaller to ensure the corresponding water purification atomization effect. After the ejector pin is pulled out of the nozzle, the nozzle can restore its original effective cross-sectional area of ​​the inner cavity, thereby significantly increasing the aerosol conduction area of ​​the nozzle. Thus, a large-flow high-pressure water flow is used to perform high-pressure flushing on the nozzle, so as to efficiently flush and remove impurities that clog the nozzle, and can use the high-pressure water flow to thoroughly flush the chamber and the inner wall of the pipeline at the nozzle and the nozzle, destroy the formation of calcium carbonate crystals and other types of scale, and prevent these impurities and scale from clogging the nozzle during the subsequent operation of the equipment. This type of high-pressure water flushing is used to clean the blocked impurities and efficiently dredge the nozzles, effectively avoiding the failure of dry mist dust removal operations due to nozzle blockage, and fully ensuring the stable and continuous operation of the dry mist dust removal system. During the operation, there is no need for frequent manual operations by staff, and the cleaning operation can be completed by relying only on the original air supply pipeline and water supply pipeline, which greatly improves the cleaning and maintenance efficiency of the nozzles and nozzles, significantly reduces the corresponding component overhaul and maintenance costs, and effectively reduces the difficulty of cleaning and maintenance operations of the nozzles and nozzles, so that the labor intensity of relevant staff can be reduced accordingly.

[0077] In addition, the dry mist dust removal system operation method provided in the present invention is used for the dry mist dust removal system as described above. It effectively avoids the failure of the dry mist dust removal operation caused by the blockage of the nozzles and nozzles of the dry mist dust removal system by implementing each operation step in sequence, thereby ensuring the stable and continuous operation of the dry mist dust removal system, while reducing the maintenance cost of the dry mist dust removal system and improving its inspection and maintenance efficiency.

[0078] The above is a detailed introduction to the dry mist dust removal system provided by the present invention and the dry mist dust removal system operation method used for the dry mist dust removal system. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A dry mist dust removal system, characterized in that: The dry mist dust removal system comprises a guide cylinder having a guide cavity therein, the axial front end of the guide cylinder is connected to a nozzle, the front end of the nozzle has a nozzle for spraying air mist, the dry mist dust removal system also comprises a water supply pipe capable of conveying clean water and an air supply pipe capable of conveying high-pressure gas, the water supply pipe and the air supply pipe are respectively connected to the upstream of the nozzle; An ejector is movably arranged in the guide cavity, the front end of the ejector can be inserted into the nozzle in a aligned manner, and the axial rear end of the guide cylinder is provided with a cleaning drive device capable of driving the ejector to reciprocate forward and backward along the axial direction; The cleaning drive device can drive the ejector pin to move axially forward, so that the front end of the ejector pin can be inserted into the nozzle in alignment and fit with the inner wall gap of the nozzle; The cleaning drive device can also drive the ejector pin to move axially backwards, so that the front end of the ejector pin is drawn out of the nozzle.

2. The dry mist dust removal system according to claim 1, characterized in that: A limiting block is arranged in linkage with the rear portion of the ejector pin, and a front end surface of the limiting block can abut against a front end inner wall of the guide cavity.

3. The dry mist dust removal system according to claim 2, characterized in that: The cleaning drive device is a cylinder, and the ejector pin is linked to the action end of the cylinder.

4. The dry mist dust removal system according to claim 3, characterized in that: The limit block is linked and connected between the action end of the cylinder and the ejector pin.

5. The dry mist dust removal system according to claim 1, characterized in that: The spray head also includes an atomizing box connected between the nozzle and the guide tube. The atomizing box has an atomizing chamber connected to the upstream of the nozzle. The water supply pipe and the air supply pipe are respectively connected to the upstream of the atomizing chamber.

6. The dry mist dust removal system according to claim 5, characterized in that: A sealing ring sleeved on the outer periphery of the ejector pin is packaged and arranged at the junction of the guide cavity and the atomization cavity, and the inner wall of the sealing ring is tightly matched with the outer wall of the ejector pin.

7. The dry mist dust removal system according to claim 1, characterized in that: It also includes a controller that communicates and cooperates with the cleaning drive device, and the controller includes a start-stop module and a timing module that communicate and cooperate with each other.

8. The dry mist dust removal system according to claim 1, characterized in that: When the front end of the ejector pin is aligned and inserted into the nozzle with clearance fit, the aerosol conduction area of ​​the nozzle is 0.54 square millimeters; After the ejector pin is pulled out of the nozzle, the aerosol conduction area of ​​the nozzle is 4.91 square millimeters.

9. A method for operating a dry mist dust removal system, characterized in that: A dry mist dust removal system for use in any one of claims 1 to 8, comprising the steps of: The cleaning drive device is used to drive the ejector pin to move forward along the axial direction until the front end of the ejector pin is aligned and inserted into the nozzle and matches with the inner wall gap of the nozzle, so that the aerosol conduction area at the nozzle meets the spray processing requirements; Clean water is introduced into the nozzle through the water supply pipe, and high-pressure gas is introduced into the nozzle through the air supply pipe, so that the clean water is atomized by the high-pressure gas and then sprayed out through the matching gap between the outer wall of the ejector pin and the inner wall of the nozzle, thereby implementing dry mist dust removal operation; After the dry mist dust removal operation has been implemented for a period of time, or when the nozzle is clogged, the cleaning drive device is used to drive the ejector pin to move backward along the axial direction until the front end of the ejector pin is pulled out of the nozzle. At this time, the aerosol conduction area at the nozzle increases to the inner cavity cross-sectional area of ​​the nozzle, and then the water supply pipe is used to continuously introduce clean water into the nozzle, and at the same time, the air supply pipe is used to continuously introduce high-pressure gas into the nozzle, so that the clean water introduced into the nozzle forms a large-flow high-pressure water flow under the action of the high-pressure gas, and the large-flow high-pressure water flow is continuously ejected outward through the nozzle, so as to perform a flushing operation on the nozzle until the impurities clogged in the nozzle are removed, so that the nozzle is restored to be unobstructed; After the nozzle is unblocked, the cleaning drive device is used to drive the ejector pin to move forward axially until the front end of the ejector pin is re-aligned and inserted into the nozzle and matched with the inner wall gap of the nozzle, so that the aerosol conduction area at the nozzle meets the spray processing requirements.

10. The dry mist dust removal system operation method according to claim 9, characterized in that: For the dry mist dust removal system according to claim 7, the timing module is used to set the cleaning interval time and the cleaning operation time. When the continuous operation time of the dry mist dust removal system reaches the cleaning interval time, the timing module sends a start instruction to the start-stop module. After receiving the start instruction, the start-stop module controls the cleaning drive device to move the ejector pin axially backward until the front end of the ejector pin is pulled out of the nozzle, so as to perform a high-pressure water flow flushing operation on the nozzle; When the duration of the high-pressure water flushing operation implemented on the nozzle reaches the cleaning operation time, the timing module sends a stop command to the start-stop module. After receiving the stop command, the start-stop module controls the cleaning drive device to move forward in the axial direction, so as to drive the ejector pin to move forward in the axial direction until the front end of the ejector pin is inserted into the nozzle and matches the inner wall gap of the nozzle to meet the spray operation requirements of the dry fog dust removal system.

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