Efficient SNCR (selective non-catalytic reduction) self-rotating assembly type denitration atomization spray gun and process

Abstract

The invention relates to the technical field of denitration atomization spray guns, and discloses an efficient SNCR self-rotating assembly type denitration atomization spray gun and a process, the efficient SNCR self-rotating assembly type denitration atomization spray gun comprises a flange connector, an input sleeve, a connecting connector, a rotating sleeve, a connecting sleeve, a discharging sleeve, a nozzle and fan blades, the input sleeve is fixedly connected with the surface of the flange connector, and the connecting connector is fixedly connected with the surface of the input sleeve; a rotating sleeve is rotatably connected to the lower surface of the input sleeve, a connecting sleeve is rotatably connected to the inner wall of the rotating sleeve, an assembling device is arranged on the surface of the connecting sleeve, a discharging sleeve is installed on the side, away from the connecting sleeve, of the assembling device, a nozzle is fixedly connected to the inner wall of the discharging sleeve, and an adjusting device is arranged on the inner wall of the nozzle. According to the urea spraying device, by arranging the adjusting device, a user can adjust the air spraying direction of the spraying gun, so that the application range of the spraying gun is widened, the air spraying direction of the spraying gun reaches the optimal state, and the mixing effect of the steam and the urea solution is improved.

Description

Technical Field

[0001] The invention relates to the technical field of denitrification atomizing spray guns, in particular to a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and a process. Background Art

[0002] The denitrification atomizing spray gun is a core component for achieving precise injection of reducing agents in industrial flue gas denitrification systems. It is mainly used to atomize the denitrification reducing agent (such as ammonia water or urea solution) into fine droplets and spray them evenly into the flue, where they fully react with nitrogen oxides in the flue gas to reduce emissions. It is powered by a high-pressure pump, which causes the reducing agent to form micron-sized droplets (particle size is usually 10-150μm) through a nozzle (mostly spiral, fan-shaped or hollow cone structures), increasing the contact area with the flue gas and improving the reaction efficiency. The spray gun is made of high-temperature and corrosion-resistant materials (such as 316L stainless steel and ceramic coatings) to adapt to the high temperature environment of 300-600℃ in the flue and the complex working conditions containing sulfur and dust. Some are equipped with cooling sleeves or anti-blocking designs to prevent coking and clogging of the nozzle. It is widely used in flue gas treatment projects in thermal power, steel, chemical and other industries. It is a key equipment to ensure denitrification efficiency (up to 80% or more) and reduce ammonia escape, helping enterprises meet environmental emission standards.

[0003] Conventional SNCR spray guns are designed to spray the reducing agent from the wall. Affected by the flue gas flow in the furnace, the reducing agent injection trajectory is prone to deflection, and the injection distance is often limited. During the injection process, if there is a local low-temperature area in the furnace or the nozzle atomization effect is poor, crystallization is likely to occur. After the water in the solution evaporates quickly, the urea particles will adhere to the nozzle surface or the inner wall of the spray gun, forming a hard crystal layer, resulting in a 30%-50% decrease in the injection flow rate; at the same time, the spray gun is mostly an integrated structure, with the nozzle fixedly connected to the gun body and no modular replacement parts. When the nozzle is damaged due to crystallization or wear, the spray gun needs to be dismantled as a whole for replacement, resulting in increased maintenance costs. For this reason, we propose a high-efficiency SNCR self-rotating assembled denitrification atomization spray gun and process. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the present invention provides a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and process, which solves the problem that during the spraying process of the existing denitrification atomizing spray gun, if it encounters a local low-temperature area in the furnace or the nozzle atomization effect is poor, crystallization is likely to occur. After the water in the solution evaporates rapidly, urea particles will adhere to the nozzle surface or the inner wall of the spray gun, forming a hard crystal layer, resulting in a 30%-50% decrease in the spray flow rate.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and process, including a flange joint, an input sleeve, a connecting joint, a rotating sleeve, a connecting sleeve, a blanking sleeve, a nozzle and a fan blade, the input sleeve is fixedly connected to the surface of the flange joint, the surface of the input sleeve is fixedly connected to the connecting joint, the lower surface of the input sleeve is rotatably connected to the rotating sleeve, the inner wall of the rotating sleeve is rotatably connected to the connecting sleeve, the surface of the connecting sleeve is provided with an assembly device, a blanking sleeve is installed on the side of the assembly device away from the connecting sleeve, the inner wall of the blanking sleeve is fixedly connected to the nozzle, and the inner wall of the rotating sleeve is fixedly connected to the fan blade;

[0008] The inner wall of the nozzle is provided with an adjusting device, and the adjusting device includes a positioning frame, the inner wall of the positioning frame is rotatably connected to a connecting shaft, the lower surface of the positioning frame is fixedly connected to a protective sleeve, the lower surface of the protective sleeve is fixedly connected to a mounting box, the inner wall of the mounting box is rotatably connected to bevel gear 1, the bevel gear 1 is fixedly connected to the surface of the connecting shaft, the inner wall of the mounting box is rotatably connected to a rotating shaft, the outer side of the rotating shaft is fixedly connected to a guide vane, the inner side of the rotating shaft is fixedly connected to bevel gear 2, and the bevel gear 2 is meshed with the tooth groove of bevel gear 1.

[0009] Preferably, the upper surface of the connecting shaft is fixedly connected with a knob, the surface of the connecting shaft is threadedly connected with a fastening nut, the fastening nut is movably abutted against the upper surface of the positioning frame, the surface of the connecting shaft is fixedly connected with a splint, and the splint is rotatably connected to the inner wall of the positioning frame. By utilizing the cooperation between the fastening nut and the splint, when the user tightens the fastening nut, the position of the connecting shaft can be locked by the friction between the splint, the fastening nut and the positioning frame, thereby limiting the position of the bevel gear one.

[0010] Preferably, the protective sleeve is mounted on the surface of the connecting shaft, and the connecting shaft is rotatably connected to the inner wall of the mounting box. The protective sleeve can shield and protect the connecting shaft to reduce the problem of the connecting shaft being exposed to the steam of the spray gun, which may cause damage to the connecting shaft.

[0011] Preferably, the guide blades are located inside the nozzle, and the number of the guide blades is eight. The eight guide blades are arranged in a circular array with the center of the mounting box as a reference. The bevel gear 2 is located inside the mounting box, and the number of the bevel gear 2 is adapted to the guide blades. By utilizing the transmission chain between the bevel gear 2 and the bevel gear 1, the guide blades can be rotated in conjunction with the rotating shaft under the operation of the user, thereby changing the guiding angle of the guide blades.

[0012] Preferably, the assembly device includes a connecting frame 1, which is fixedly connected to the surface of the connecting sleeve, a pressing sleeve is installed on the inner wall of the connecting frame 1, and a connecting frame 2 is fixedly connected to the surface of the blanking sleeve, and the connecting frame 2 is sleeved on the surface of the pressing sleeve. The inner walls of the connecting frame 1 and the connecting frame 2 are both installed with sealing rings, and the sealing rings are movably abutted against the surface of the pressing sleeve. A fixing bolt is inserted into the inner wall of the connecting frame 1, and a threaded sleeve is fixedly connected to the lower surface of the connecting frame 2. The fixing bolt is threadedly connected to the inner wall of the threaded sleeve. By utilizing the cooperation of the pressing sleeve and the sealing ring, the connection area between the connecting frame 1 and the connecting frame 2 can be shielded, and the sealing effect of the connection part can be increased, thereby reducing the chance of steam leakage.

[0013] Preferably, a U-shaped frame is fixedly connected to the surface of the pressing sleeve, and the U-shaped frame is sleeved on the surface of the fixing bolt. By utilizing the cooperation between the U-shaped frame and the fixing bolt, the position of the pressing sleeve can be restricted after tightening the fixing bolt to reduce the chance of the pressing sleeve rotating during use.

[0014] Preferably, a cavity is provided in the center of the pressing sleeve, a circular hole connected to the cavity is provided on the surface of the sealing ring, and the fixing bolt is plugged into the inner wall of the connecting frame 2. By utilizing the cooperation between the fixing bolt and the threaded sleeve, after the user tightens the fixing bolt, the connecting frame 1, the pressing sleeve and the connecting frame 2 can be assembled into a whole, thereby connecting the connecting sleeve and the blanking sleeve.

[0015] Preferably, an auxiliary device is provided on the surface of the positioning frame, and the auxiliary device includes a guide sleeve, the guide sleeve is fixedly connected to the upper surface of the positioning frame, the inner wall of the guide sleeve is slidably connected to a connecting column, the connecting column is slidably connected to the inner wall of the positioning frame, the lower surface of the connecting column is fixedly connected to a counterweight block, the upper surface of the connecting column is fixedly connected to a connecting frame, the surface of the connecting frame is fixedly connected to a hexagonal block, the upper surface of the knob is provided with a slot, and the hexagonal block is plugged into the inner wall of the slot, and the weight of the counterweight block can be used to limit the position of the connecting column when the connecting column is in a non-operating state, thereby ensuring the stability of the connecting column in the non-operating state. When the spray gun is installed horizontally, the user can install a tension spring in the area between the connecting frame and the guide sleeve to use the force of the tension spring to limit the position of the connecting frame.

[0016] Preferably, the inner wall of the guide sleeve is provided with a protrusion, and the surface of the connecting column is provided with a key groove adapted to the protrusion. The guide sleeve can guide the moving direction of the connecting column and avoid the problem of rotation of the connecting column during movement.

[0017] Preferably, S1, when using a spray gun, install the flange joint to the steam joint. After completing the installation of the flange joint, install the pipe for pumping urea solution to the connecting joint and fix it. After completing the above operations, install the nozzle to the designated installation position;

[0018] S2. When the spray gun is working, steam is sent into the input sleeve through the flange joint. When the steam passes through the input sleeve, it blows the fan blades. Under the guidance of the rotating sleeve, the fan blades are blown by the steam and rotate. During the rotation, the steam is disturbed, causing the steam to rotate. The rotating steam is guided by the connecting sleeve and the assembly device and enters the nozzle of the discharge sleeve. When the steam enters the nozzle, the steam passes through the guide blades and is guided by the guide blades to rotate again, thereby increasing the mixing disturbance of the steam and the urea solution.

[0019] At the same time, the connecting joint sends the pumped urea solution into the cavity of the input sleeve, and the input sleeve sends the urea solution into the cavities of the rotating sleeve, the assembly device, and the discharge sleeve in sequence, and sends the urea solution into the nozzle through the discharge sleeve and mixes with the steam in the nozzle. The steam of the mixed urea solution is sprayed into the designed use environment such as the flue, and reacts with nitrogen oxides (NOx) to produce nitrogen and water to achieve denitrification.

[0020] In summary, the technical effects and advantages of the present invention are:

[0021] 1. In the present invention, by providing an adjustment device, the user can adjust the jet direction of the spray gun, thereby improving the applicability of the spray gun and making the jet direction of the spray gun reach the optimal state, reducing the problem of urea crystal precipitation caused by the interference of flue gas on steam and urea solution, and increasing the mixing effect of steam and urea solution.

[0022] 2. In the present invention, by providing an assembly device, the user can disassemble the nozzle structure of the spray gun separately, thereby reducing the problem of high replacement cost of the spray gun adopting an integrated structure, and reducing the replacement cost of the spray gun in subsequent maintenance.

[0023] 3. In the present invention, by providing an auxiliary device, the adjustment device can be locked at an appropriate position to ensure the stability of the adjustment device in some states, thereby improving the guiding effect of the adjustment device in a specified state. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and process of the present invention;

[0025] Figure 2 This is a front view of a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and process according to the present invention;

[0026] Figure 3 The invention discloses a high-efficiency SNCR self-rotating assembly type denitrification atomizing spray gun and process. Figure 2 Schematic diagram of the cross-sectional structure;

[0027] Figure 4 This is a schematic structural diagram of an adjustment device for a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and process according to the present invention;

[0028] Figure 5 The invention discloses a high-efficiency SNCR self-rotating assembly type denitrification atomizing spray gun and process. Figure 4 Schematic diagram of the structure at A in the middle;

[0029] Figure 6 This is a schematic diagram of the assembly structure of a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and process of the present invention;

[0030] Figure 7 The invention discloses a high-efficiency SNCR self-rotating assembly type denitrification atomizing spray gun and process. Figure 6 Schematic diagram of the structure at B in the middle;

[0031] Figure 8 This is a schematic diagram of the structure of an auxiliary device for a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and process of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the auxiliary device of a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and process of the present invention.

[0033] In the figure: 1. Flange joint; 2. Input sleeve; 3. Connecting joint; 4. Rotating sleeve; 5. Connecting sleeve; 6. Feeding sleeve; 7. Nozzle; 8. Fan blade;

[0034] 9. Assembly device; 91. Connecting frame 1; 92. Pressing sleeve; 93. Connecting frame 2; 94. Sealing ring; 95. Fixing bolt; 96. U-shaped frame; 97. Threaded sleeve;

[0035] 10. Adjustment device; 101. Positioning bracket; 102. Connecting shaft; 103. Knob; 104. Fastening nut; 105. Clamp; 106. Protective cover; 107. Mounting box; 108. Bevel gear 1; 109. Rotating shaft; 1010. Guide vane; 1011. Bevel gear 2;

[0036] 11. Auxiliary device; 111. Guide sleeve; 112. Connecting column; 113. Counterweight; 114. Connecting frame; 115. Hexagonal clamping block; 116. Clamping slot. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] refer to Figures 1-9 The illustrated embodiment shows a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun and process, comprising a flange joint 1, an input sleeve 2, a connecting joint 3, a rotating sleeve 4, a connecting sleeve 5, a blanking sleeve 6, a nozzle 7 and a fan blade 8. The input sleeve 2 is fixedly connected to the surface of the flange joint 1, the surface of the input sleeve 2 is fixedly connected to the connecting joint 3, the lower surface of the input sleeve 2 is rotatably connected to the rotating sleeve 4, the inner wall of the rotating sleeve 4 is rotatably connected to the connecting sleeve 5, an assembly device 9 is provided on the surface of the connecting sleeve 5, a blanking sleeve 6 is installed on the side of the assembly device 9 away from the connecting sleeve 5, the inner wall of the blanking sleeve 6 is fixedly connected to the nozzle 7, and the inner wall of the rotating sleeve 4 is fixedly connected to the fan blade 8;

[0039] The inner wall of the nozzle 7 is provided with an adjusting device 10, which includes a positioning frame 101. The inner wall of the positioning frame 101 is rotatably connected to the connecting shaft 102. The lower surface of the positioning frame 101 is fixedly connected to a protective sleeve 106. The lower surface of the protective sleeve 106 is fixedly connected to a mounting box 107. The inner wall of the mounting box 107 is rotatably connected to a bevel gear 108. The bevel gear 108 is fixedly connected to the surface of the connecting shaft 102. The inner wall of the mounting box 107 is rotatably connected to a rotating shaft 109. The outer side of the rotating shaft 109 is fixedly connected to a guide blade 1010. The inner side of the rotating shaft 109 is fixedly connected to a bevel gear 2 1011. The bevel gear 2 1011 is meshed with the tooth grooves of the bevel gear 108.

[0040] Among them, the upper surface of the connecting shaft 102 is fixedly connected with a knob 103, and the surface of the connecting shaft 102 is threadedly connected with a fastening nut 104, and the fastening nut 104 is movably abutted against the upper surface of the positioning frame 101, and the surface of the connecting shaft 102 is fixedly connected with a splint 105, and the splint 105 is rotatably connected to the inner wall of the positioning frame 101. By utilizing the cooperation between the fastening nut 104 and the splint 105, when the user tightens the fastening nut 104, the position of the connecting shaft 102 can be locked by the friction between the splint 105, the fastening nut 104 and the positioning frame 101, thereby limiting the position of the bevel gear 108.

[0041] Among them, the protective sleeve 106 is sleeved on the surface of the connecting shaft 102, and the connecting shaft 102 is rotatably connected to the inner wall of the installation box 107. The protective sleeve 106 can shield and protect the connecting shaft 102 to reduce the problem of the connecting shaft 102 being exposed to the steam of the spray gun and causing damage to the connecting shaft 102.

[0042] Among them, the guide blades 1010 are located inside the nozzle 7, and the number of the guide blades 1010 is eight. The eight guide blades 1010 are arranged in a circular array with the center of the installation box 107 as a reference. The bevel gear 2 1011 is located inside the installation box 107. The number of the bevel gear 2 1011 is adapted to the guide blades 1010. By utilizing the transmission chain between the bevel gear 2 1011 and the bevel gear 1 108, the guide blades 1010 can be rotated in conjunction with the rotating shaft 109 under the operation of the user, thereby changing the guiding angle of the guide blades 1010.

[0043] Among them, the assembly device 9 includes a connecting frame 91, which is fixedly connected to the surface of the connecting sleeve 5, and a pressing sleeve 92 is installed on the inner wall of the connecting frame 91. The surface of the blanking sleeve 6 is fixedly connected to a connecting frame 2 93, and the connecting frame 2 93 is sleeved on the surface of the pressing sleeve 92. The inner walls of the connecting frame 1 91 and the connecting frame 2 93 are both installed with sealing rings 94, and the sealing ring 94 is movably abutted against the surface of the pressing sleeve 92. The inner wall of the connecting frame 1 91 is inserted with a fixing bolt 95, and the lower surface of the connecting frame 2 93 is fixedly connected with a threaded sleeve 97. The fixing bolt 95 is threadedly connected to the inner wall of the threaded sleeve 97. By utilizing the cooperation of the pressing sleeve 92 and the sealing ring 94, the connection area between the connecting frame 1 91 and the connecting frame 2 93 can be shielded, and the sealing effect of the connection part can be increased, thereby reducing the chance of steam leakage.

[0044] Among them, the surface of the pressing sleeve 92 is fixedly connected with a U-shaped frame 96, and the U-shaped frame 96 is sleeved on the surface of the fixing bolt 95. By utilizing the cooperation between the U-shaped frame 96 and the fixing bolt 95, the position of the pressing sleeve 92 can be restricted after tightening the fixing bolt 95, so as to reduce the chance of the pressing sleeve 92 rotating during use.

[0045] Among them, a cavity is opened in the center of the pressing sleeve 92, and a circular hole connected to the cavity is opened on the surface of the sealing ring 94. The fixing bolt 95 is inserted into the inner wall of the connecting frame 2 93. By utilizing the cooperation of the fixing bolt 95 and the threaded sleeve 97, after the user tightens the fixing bolt 95, the connecting frame 1 91, the pressing sleeve 92 and the connecting frame 2 93 can be assembled into a whole, thereby connecting the connecting sleeve 5 and the blanking sleeve 6.

[0046] Among them, the surface of the positioning frame 101 is provided with an auxiliary device 11, which includes a guide sleeve 111, which is fixedly connected to the upper surface of the positioning frame 101, and the inner wall of the guide sleeve 111 is slidably connected to a connecting column 112, which is slidably connected to the inner wall of the positioning frame 101, and the lower surface of the connecting column 112 is fixedly connected to a counterweight block 113, and the upper surface of the connecting column 112 is fixedly connected to a connecting frame 114, and the surface of the connecting frame 114 is fixedly connected to a hexagonal block 11 5. A slot 116 is provided on the upper surface of the knob 103. The hexagonal block 115 is plugged into the inner wall of the slot 116. The weight of the counterweight 113 can be used to limit the position of the connecting column 112 when it is in a non-operating state, thereby ensuring the stability of the connecting column 112 in the non-operating state. When the spray gun is installed horizontally, the user can install a tension spring in the area between the connecting frame 114 and the guide sleeve to utilize the force of the tension spring to limit the position of the connecting frame 114.

[0047] Among them, the inner wall of the guide sleeve 111 is provided with a protrusion, and the surface of the connecting column 112 is provided with a key groove adapted to the protrusion. The guide sleeve 111 can guide the moving direction of the connecting column 112, and at the same time, it can avoid the problem of rotation of the connecting column 112 during the movement.

[0048] The working principle of the present invention is as follows: when using the spray gun, install the flange joint 1 to the steam joint. After completing the installation of the flange joint 1, install the pipe for pumping urea solution to the connecting joint 3 and fix it. After completing the above operations, install the spray head to the designated installation position;

[0049] When the spray gun is working, steam is sent into the input sleeve 2 through the flange joint 1. When the steam passes through the input sleeve 2, it blows the fan blade 8. Under the guidance of the rotating sleeve 4, the fan blade 8 is blown by the steam to rotate, and the steam is disturbed during the rotation process, causing the steam to rotate. The steam in the rotating state is guided by the connecting sleeve 5 and the assembly device 9 and enters the nozzle 7 of the blanking sleeve 6. When the steam enters the nozzle 7, the steam passes through the guide blade 1010 and is guided by the guide blade 1010 to rotate again, thereby increasing the mixing disturbance of the steam and the urea solution.

[0050] At the same time, the connecting joint 3 delivers the pumped urea solution into the cavity of the input sleeve 2. The input sleeve 2 delivers the urea solution into the cavities of the rotating sleeve 4, the assembly device 9, and the blanking sleeve 6 in sequence. The urea solution is then delivered to the nozzle 7 via the blanking sleeve 6 and mixed with the steam in the nozzle 7. The steam of the mixed urea solution is sprayed into the designed use environment such as the flue, and reacts with nitrogen oxides NOx to produce nitrogen and water to achieve denitrification.

[0051] When the user needs to adjust the guide angle of the guide blade 1010 or disassemble the nozzle 7, rotate the fixing bolt 95, and the fixing bolt 95 gradually unscrews the threaded sleeve 97. When the fixing bolt 95 is completely unscrewed from the threaded sleeve 97, pull out the fixing bolt 95, and the fixing bolt 95 loses the locking effect on the connecting frame 91 and the pressing sleeve 92. At this time, the user can remove the blanking sleeve 6 and the pressing sleeve 92. After removing the blanking sleeve 6, the user can replace or adjust the guide blade 1010 according to the disassembly requirements; after completing the replacement or adjustment operation, insert a fixing bolt 95 into the connecting frame 91, and align the U-shaped frame 96 on the pressing sleeve 92 with the fixing bolt 95 for installation, After the ring 94 contacts, align the connecting frame 2 93 with the fixing bolt 95 for installation. In the process of pushing the connecting frame 2 93, the threaded sleeve 97 is sleeved on the fixing bolt 95. At this time, the fixing bolt 95 is rotated, and the fixing bolt 95 is screwed into the threaded sleeve 97 tube, and the position of the connecting frame 2 93 is preliminarily locked. Then, according to the above steps, the fixing bolts 95 are screwed into the threaded sleeve 97 in turn and tightened one by one. After all the fixing bolts 95 are tightened, the blanking sleeve 6 is reinstalled on the connecting sleeve 5. By providing the assembly device 9, the user can disassemble the nozzle structure of the spray gun separately, thereby reducing the problem of high replacement cost of the spray gun adopting an integrated structure, and reducing the replacement cost of the spray gun in subsequent maintenance;

[0052] In addition, when operating the adjustment device 10, the connecting frame 114 is pulled upward, and the connecting frame 114 pulls the connecting column 112 and the hexagonal block 115. The connecting column 112 guides the moving direction of the connecting frame 114 with the cooperation of the guide sleeve and pulls the counterweight 113, and the hexagonal block 115 is pulled out of the slot 116 by force. When the hexagonal block 115 is completely out of the slot 116, the user can operate the adjustment device 10. During the adjustment process, the user needs to continue to pull the connecting frame 114 to ensure that the hexagonal block 115 is always out of the slot. The state of the card slot 116; after completing the adjustment operation, the user releases the connecting frame 114, the connecting frame 114 loses the pulling force applied to the connecting column 112, the connecting column 112 loses the pulling force applied to the counterweight 113, the counterweight 113 loses its force, and under the action of its own weight, cooperates with the connecting column 112 to pull the connecting frame 114 to its original position; by providing the auxiliary device 11, the adjustment device 10 can be locked in an appropriate position to ensure the stability of the adjustment device 10 in some states, thereby improving the guiding effect of the adjustment device 10 in a specified state;

[0053] When making adjustments, use a tool to loosen the fastening nut 104. After the fastening nut 104 is loosened, operate the auxiliary device 11 to disengage the auxiliary device 11 from the knob 103. Then, hold the knob 103 and rotate it synchronously. The knob 103 rotates the connecting shaft 102, and the connecting shaft 102 rotates the bevel gear 108. The bevel gear 108 meshes with the bevel gear 2 1011. Under the action of the bevel gear 108, the bevel gear 2 1011 rotates the rotating shaft 109, and the rotating shaft 109 rotates the guide blade 1010, thereby adjusting the inclination state of the guide blade 1010. After completing the adjustment operation, hold the knob 103 and use The auxiliary tool re-tightens the fastening nut 104. After the fastening nut 104 is tightened, it rests on the positioning frame 101 and cooperates with the clamping plate 105 to lock the position of the connecting shaft 102. At this time, the connecting shaft 102 can cooperate with the bevel gear 1 108 to limit the position of the bevel gear 2 1011, the rotating shaft 109 and the guide blade 1010. By setting the adjustment device 10, the user can adjust the jet direction of the spray gun, thereby improving the applicability of the spray gun and making the jet direction of the spray gun reach the optimal state, reducing the interference of the steam and urea solution by the flue gas, causing the problem of urea crystal precipitation, and increasing the mixing effect of the steam and urea solution.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun, comprising a flange joint (1), an input sleeve (2), a connecting joint (3), a rotating sleeve (4), a connecting sleeve (5), a blanking sleeve (6), a nozzle (7) and a fan blade (8), characterized in that: The input sleeve (2) is fixedly connected to the surface of the flange joint (1); the surface of the input sleeve (2) is fixedly connected to a connecting joint (3); the lower surface of the input sleeve (2) is rotatably connected to a rotating sleeve (4); the inner wall of the rotating sleeve (4) is rotatably connected to a connecting sleeve (5); an assembling device (9) is provided on the surface of the connecting sleeve (5); a blanking sleeve (6) is installed on a side of the assembling device (9) away from the connecting sleeve (5); the inner wall of the blanking sleeve (6) is fixedly connected to a nozzle (7); and the inner wall of the rotating sleeve (4) is fixedly connected to a fan blade (8); The inner wall of the nozzle (7) is provided with an adjusting device (10), and the adjusting device (10) comprises a positioning frame (101), the inner wall of the positioning frame (101) is rotatably connected to a connecting shaft (102), the lower surface of the positioning frame (101) is fixedly connected to a protective sleeve (106), the lower surface of the protective sleeve (106) is fixedly connected to a mounting box (107), the inner wall of the mounting box (107) is rotatably connected to a bevel gear 1 (108), the bevel gear 1 (108) is fixedly connected to the surface of the connecting shaft (102), the inner wall of the mounting box (107) is rotatably connected to a rotating shaft (109), the outer side of the rotating shaft (109) is fixedly connected to a guide vane (1010), the inner side of the rotating shaft (109) is fixedly connected to a bevel gear 2 (1011), and the bevel gear 2 (1011) is meshed with the tooth groove of the bevel gear 1 (108).

2. The high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun according to claim 1, characterized in that: The upper surface of the connecting shaft (102) is fixedly connected to a knob (103), the surface of the connecting shaft (102) is threadedly connected to a fastening nut (104), the fastening nut (104) is movably abutted against the upper surface of the positioning frame (101), the surface of the connecting shaft (102) is fixedly connected to a clamping plate (105), and the clamping plate (105) is rotatably connected to the inner wall of the positioning frame (101).

3. The high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun according to claim 1, characterized in that: The protective sleeve (106) is sleeved on the surface of the connecting shaft (102), and the connecting shaft (102) is rotatably connected to the inner wall of the installation box (107).

4. The high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun according to claim 1, characterized in that: The guide blades (1010) are located inside the nozzle (7), and the number of the guide blades (1010) is eight. The eight guide blades (1010) are arranged in a circular array with the center of the installation box (107) as a reference. The second bevel gear (1011) is located inside the installation box (107), and the number of the second bevel gear (1011) is adapted to the guide blades (1010).

5. The high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun according to claim 1, characterized in that: The assembly device (9) includes a connecting frame (91), the connecting frame (91) is fixedly connected to the surface of the connecting sleeve (5), the inner wall of the connecting frame (91) is installed with a pressing sleeve (92), the surface of the blanking sleeve (6) is fixedly connected with a connecting frame (93), the connecting frame (93) is sleeved with the surface of the pressing sleeve (92), the inner walls of the connecting frame (91) and the connecting frame (93) are both installed with sealing rings (94), the sealing rings (94) are movably abutted against the surface of the pressing sleeve (92), the inner wall of the connecting frame (91) is inserted with a fixing bolt (95), the lower surface of the connecting frame (93) is fixedly connected with a threaded sleeve (97), and the fixing bolt (95) is threadedly connected to the inner wall of the threaded sleeve (97).

6. The high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun according to claim 5, characterized in that: The surface of the pressing sleeve (92) is fixedly connected with a U-shaped frame (96), and the U-shaped frame (96) is sleeved on the surface of the fixing bolt (95).

7. The high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun according to claim 5, characterized in that: The center of the pressing sleeve (92) is provided with a cavity, the surface of the sealing ring (94) is provided with a circular hole communicating with the cavity, and the fixing bolt (95) is plugged into the inner wall of the second connecting frame (93).

8. The high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun according to claim 1, characterized in that: The surface of the positioning frame (101) is provided with an auxiliary device (11), and the auxiliary device (11) includes a guide sleeve (111), the guide sleeve (111) is fixedly connected to the upper surface of the positioning frame (101), the inner wall of the guide sleeve (111) is slidably connected to a connecting column (112), the connecting column (112) is slidably connected to the inner wall of the positioning frame (101), the lower surface of the connecting column (112) is fixedly connected to a counterweight (113), the upper surface of the connecting column (112) is fixedly connected to a connecting frame (114), the surface of the connecting frame (114) is fixedly connected to a hexagonal block (115), the upper surface of the knob (103) is provided with a card slot (116), and the hexagonal block (115) is plugged into the inner wall of the card slot (116).

9. The high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun according to claim 8, characterized in that: The inner wall of the guide sleeve (111) is provided with a protrusion, and the surface of the connecting column (112) is provided with a key groove adapted to the protrusion.

10. A process for producing a high-efficiency SNCR self-rotating assembled denitrification atomizing spray gun according to any one of claims 1 to 9, characterized in that: S1. When using a spray gun, install the flange joint (1) onto the steam joint. After completing the installation of the flange joint (1), install the pipe for pumping urea solution onto the connecting joint (3) and fix it. After completing the above operations, install the spray head to the designated installation position; S2. When the spray gun is working, steam is sent into the input sleeve (2) through the flange joint (1). When the steam passes through the input sleeve (2), it blows the fan blade (8). Under the guidance of the rotating sleeve (4), the fan blade (8) is blown and rotated by the steam, and the steam is disturbed during the rotation process, causing the steam to rotate. The steam in the rotating state is guided by the connecting sleeve (5) and the assembly device (9) and enters the nozzle (7) of the discharge sleeve (6). When the steam enters the nozzle (7), the steam passes through the guide blade (1010) and is blown by the guide blade (1010). The steam is guided and rotated again, thereby increasing the mixing disturbance of the steam and the urea solution; at the same time, the connection joint (3) sends the pumped urea solution into the cavity of the input sleeve (2), and the input sleeve (2) sends the urea solution into the cavities of the rotating sleeve (4), the assembly device (9), and the discharge sleeve (6) in sequence, and the urea solution is sent to the nozzle (7) through the discharge sleeve (6) and mixed with the steam in the nozzle (7). The steam of the mixed urea solution is sprayed into the designed use environment such as the flue, and reacts with nitrogen oxides (NOx) to form nitrogen and water to achieve denitration.

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