A dosing mechanism for a denitrification device
By designing a dosing mechanism with functions of classifying and mixing, the problem of poor applicability of existing dosing mechanisms has been solved, enabling flexible adjustment and uniform mixing of the reagents, thereby improving the flue gas treatment effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU KAITIAN ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-30
AI Technical Summary
Existing dosing facilities cannot classify, store, and add different agents, resulting in poor applicability, uneven agent mixing, and reduced flue gas treatment efficiency.
A dosing mechanism for a denitrification device was designed, comprising a fixed frame, partition, addition port, support plate, fixed pipe, connecting pipe valve, drain pipe valve, housing, worm gear, motor, rotating rod, turbine and stirring blades, realizing the functions of classifying and mixing the reagents.
It enables flexible adjustment of reagent type according to different working conditions, improves the mixing uniformity and quality of reagents, and enhances the practicality of the equipment.
Smart Images
Figure CN224422650U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of equipment dosing technology, and specifically relates to a dosing mechanism for denitrification equipment. Background Technology
[0002] Flue gas denitrification equipment is a key environmental protection device for industrial flue gas treatment. It reduces nitrogen oxide emissions through physical or chemical means and is widely used in the treatment of exhaust gas from combustion systems in industries such as power, steel, and ceramics. The dosing mechanism is an important component of the denitrification equipment, which is used to deliver the prepared reagents into the equipment for spraying.
[0003] Existing dosing mechanisms are generally installed above the equipment. Although they have a large capacity and are securely installed, they still have other problems during use. For example, they do not have the function of classifying, storing, and adding chemicals. Since different chemicals need to be added to the denitrification equipment at different times, depending on the operating conditions such as flue gas temperature and sulfur / dust content, if a single-chamber single-chemical agent is used, the applicability is poor, which reduces the treatment effect of flue gas. Moreover, it is impossible to fully mix and stir the chemicals. After the chemicals are added, they need to be mixed with water and other additives. If they are directly fed in and rely on diffusion, it will lead to uneven distribution, which is not very practical. Utility Model Content
[0004] The purpose of this invention is to provide a dosing mechanism for a denitrification device, which has the advantages of being able to add chemicals in a classified manner and improving the mixing effect of the chemicals.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a dosing mechanism for a denitrification device, comprising a fixed frame, two partitions installed inside the fixed frame, three inlet ports penetrating through the front of the fixed frame, a support plate bolted to the bottom of the fixed frame, a fixed pipe disposed inside the support plate, three connecting pipe valves communicating with the fixed frame fixedly sleeved on the surface of the fixed pipe, a drain pipe valve penetrating through the surface of the fixed pipe, a housing placed on top of the fixed frame, a worm gear rotatably connected inside the housing, a motor fixedly sleeved at the other end of the worm gear, three rotating rods rotatably connected inside the housing, a turbine for cooperating with the worm gear fixedly sleeved on the surface of the rotating rods, and stirring blades bolted to the surface of the rotating rods.
[0006] The above technical solution has the function of adding different agents according to different time periods of the denitrification equipment, and can adjust the agent type in a timely manner. It has good flexibility, improves the mixing effect of agents, ensures the uniformity and quality of agents, and has high practicality.
[0007] The present invention is further configured such that two limiting plates are placed at the bottom of the fixed tube, and the top of the limiting plates is bolted to the bottom of the fixed frame.
[0008] The above technical solution, by setting the limiting plate, can support and limit the fixed tube, thereby improving the stability of the fixed tube during use.
[0009] The present invention is further configured such that mounting plates are welded to both sides of the support plate, and two mounting holes are formed inside the mounting plates.
[0010] The above technical solution allows for easy fixing of the support plate with screws by the installation plate and mounting holes.
[0011] The present invention is further configured such that a sealing cap is threadedly connected to the surface of the adding port.
[0012] The above technical solution can seal the opening of the filling port by setting a sealing cap, preventing dust in the air from entering.
[0013] The present invention is further configured such that the front of the fixed frame is integrally formed with three observation ports.
[0014] The above technical solution allows personnel to easily observe and understand the remaining liquid volume in the internal chamber through the setting of the observation port.
[0015] The present invention is further configured such that a protective cover is bolted to one side of the housing, a heat dissipation groove is provided on the front of the protective cover, and a dustproof net is installed inside the heat dissipation groove.
[0016] The above technical solution protects the motor from damage and malfunctions caused by impacts from external objects.
[0017] The present invention is further configured such that the rotating rod, turbine and stirring blade are all made of stainless steel.
[0018] The above-mentioned technical solution features high strength, low density, and excellent corrosion resistance in the rotating rod, turbine, and stirring blades.
[0019] In summary, this utility model has the following beneficial effects:
[0020] 1. The mechanism is first fixed to the designated position with screws. After the mechanism is fixed, the reagent and water are fed into different internal chambers through the addition port in proportion. The three chambers correspond to SNCR denitrification agent for high temperature period, SCR denitrification agent for medium temperature period and PNCR polymer denitrification agent for low temperature period respectively. When the reagent needs to be added, first open the drain pipe valve, and then open the connecting pipe valve below the corresponding chamber to let the reagent be discharged through the fixed pipe and drain pipe valve. It has the function of classified addition, and different reagents can be added according to different time periods of the denitrification equipment, and the reagent type can be adjusted in time, which is highly flexible.
[0021] 2. By starting the motor, the motor will drive the worm gear to rotate through the housing. When the worm gear rotates, it will drive the three turbines to rotate together. When the turbines rotate, they will drive the rotating rod to rotate. When the rotating rod rotates, it will drive the stirring blade to rotate together. When the stirring blade rotates, it will drive the liquid in the chamber to stir, which can improve the mixing effect of the agent, ensure the uniformity and quality of the agent, and has high practicality. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a front sectional view of the structure of this utility model;
[0024] Figure 3 This is the utility model Figure 2 Enlarged diagram of point A in the middle.
[0025] Reference numerals: 1. Fixed frame; 2. Partition plate; 3. Adding port; 4. Support plate; 5. Fixed pipe; 6. Connecting pipe valve; 7. Drain pipe valve; 8. Housing; 9. Worm gear; 10. Motor; 11. Rotating rod; 12. Turbine; 13. Stirring blade; 14. Limiting plate; 15. Mounting plate; 16. Sealing cover; 17. Observation port; 18. Protective cover. Detailed Implementation
[0026] The present invention will be further described in detail below with reference to the accompanying drawings.
[0027] Example 1:
[0028] refer to Figure 1 , Figure 2 and Figure 3A dosing mechanism for a denitrification device includes a fixed frame 1, with two partitions 2 installed inside the fixed frame 1. Three inlet ports 3 are connected through the front of the fixed frame 1. A support plate 4 is bolted to the bottom of the fixed frame 1, and a fixed pipe 5 is installed inside the support plate 4. Three connecting pipe valves 6, connected to the fixed frame 1, are fixedly sleeved on the surface of the fixed pipe 5. A drain pipe valve 7 is also connected through the surface of the fixed pipe 5. The mechanism is first fixed to a designated position with screws. After the mechanism is fixed, the reagents and water are fed into different internal chambers through the inlet ports 3 in a specific ratio. The three chambers correspond to SNCR denitrification agent for high-temperature periods, SCR denitrification agent for medium-temperature periods, and PNCR polymeric denitrification agent for low-temperature periods, respectively. When reagents need to be added, the drain pipe valve 7 is opened first, and then the connecting pipe valve 6 below the corresponding chamber is opened to allow the reagents to be discharged through the fixed pipe 5 and the drain pipe valve 7. This mechanism has a classified addition function, allowing different reagents to be added according to different periods of the denitrification equipment, and timely adjustment of reagent types, providing good flexibility.
[0029] refer to Figure 2 Two limiting plates 14 are placed at the bottom of the fixed tube 5. The top of the limiting plates 14 is bolted to the bottom of the fixed frame 1. The limiting plates 14 can support and limit the fixed tube 5, thereby improving the stability of the fixed tube 5 during use.
[0030] refer to Figure 1 and Figure 2 Mounting plates 15 are welded to both sides of the support plate 4. Two mounting holes are opened inside the mounting plate 15. The mounting plate 15 and the mounting holes make it easy for personnel to fix the support plate 4 with screws.
[0031] refer to Figure 1 The surface of the filling port 3 is threaded with a sealing cap 16. The sealing cap 16 can seal the opening of the filling port 3 to prevent dust in the air from entering.
[0032] refer to Figure 1 The fixed frame 1 has three observation ports 17 integrally formed on the front. The observation ports 17 make it easy for personnel to observe and understand the amount of remaining liquid in the internal chamber.
[0033] Brief description of the usage process: First, fix the mechanism to the designated position with screws. After the mechanism is fixed, send the reagent and water into the different internal chambers through the addition port 3 in proportion. The three chambers correspond to the SNCR denitrification agent during the high temperature period, the SCR denitrification agent during the medium temperature period, and the PNCR polymer denitrification agent during the low temperature period, respectively. When the reagent needs to be added, first open the drain pipe valve 7, and then open the connecting pipe valve 6 below the corresponding chamber to allow the reagent to be discharged through the fixed pipe 5 and the drain pipe valve 7.
[0034] Example 2:
[0035] refer to Figure 1 and Figure 2 A dosing mechanism for a denitrification device includes a housing 8 placed on top of a fixed frame 1. A worm gear 9 is rotatably connected inside the housing 8, and a motor 10 is fixedly sleeved at the other end of the worm gear 9. Three rotating rods 11 are rotatably connected inside the housing 8. Turbines 12, which cooperate with the worm gear 9, are fixedly sleeved on the surface of each rotating rod 11. Stirring blades 13 are bolted to the surface of each rotating rod 11. When the motor 10 is started, it drives the worm gear 9 to rotate in conjunction with the housing 8. The rotation of the worm gear 9 drives the three turbines 12 to rotate together. The rotation of the turbines 12 drives the rotating rods 11 to rotate, and the rotation of the rotating rods 11 drives the stirring blades 13 to rotate together. The rotation of the stirring blades 13 agitates the liquid in the chamber, improving the mixing effect of the reagents and ensuring the uniformity and quality of the reagents. This design is highly practical.
[0036] refer to Figure 1 and Figure 2 A protective cover 18 is bolted to one side of the housing 8. A heat dissipation groove is provided on the front of the protective cover 18. A dustproof net is installed inside the heat dissipation groove. The protective cover 18 can protect the motor 10 and prevent the motor 10 from being damaged or malfunctioning due to collisions with external objects.
[0037] refer to Figure 2 The rotating rod 11, turbine 12 and stirring blade 13 are all made of stainless steel. The rotating rod 11, turbine 12 and stirring blade 13 have the characteristics of high strength, low density and high corrosion resistance.
[0038] Brief description of the usage process: After starting the motor 10, the motor 10 will drive the worm 9 to rotate in cooperation with the housing 8. When the worm 9 rotates, it will drive the three turbines 12 to rotate together. When the turbines 12 rotate, they will drive the rotating rod 11 to rotate. When the rotating rod 11 rotates, it will drive the stirring blade 13 to rotate together. When the stirring blade 13 rotates, it will drive the liquid in the chamber to stir.
[0039] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.
[0040] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A dosing mechanism for a denitrification device, comprising a fixed frame (1), characterized in that: The fixed frame (1) has two partitions (2) installed inside. The front of the fixed frame (1) has three through-holes (3). The bottom of the fixed frame (1) is bolted with a support plate (4). The support plate (4) has a fixed pipe (5) inside. The surface of the fixed pipe (5) is fixedly fitted with three connecting pipe valves (6) that communicate with the fixed frame (1). The surface of the fixed pipe (5) is connected through a drain pipe valve (7). The top of the fixed frame (1) is placed with a housing (8). The inside of the housing (8) is rotatably connected with a worm gear (9). The other end of the worm gear (9) is fixedly fitted with a motor (10). The inside of the housing (8) is rotatably connected with three rotating rods (11). The surface of the rotating rods (11) is fixedly fitted with a turbine (12) that works with the worm gear (9). The surface of the rotating rods (11) is bolted with stirring blades (13).
2. The dosing mechanism of a denitrification device according to claim 1, characterized in that: Two limiting plates (14) are placed at the bottom of the fixed tube (5), and the top of the limiting plates (14) is bolted to the bottom of the fixed frame (1).
3. The dosing mechanism of a denitrification device according to claim 1, characterized in that: Mounting plates (15) are welded to both sides of the support plate (4), and two mounting holes are opened inside the mounting plate (15).
4. The dosing mechanism of a denitrification device according to claim 1, characterized in that: The surface of the addition port (3) is threaded with a sealing cap (16).
5. The dosing mechanism of a denitrification device according to claim 1, characterized in that: The fixed frame (1) has three observation ports (17) integrally formed on the front.
6. The dosing mechanism of a denitrification device according to claim 1, characterized in that: A protective cover (18) is bolted to one side of the housing (8). A heat dissipation groove is provided on the front of the protective cover (18), and a dustproof net is installed inside the heat dissipation groove.
7. The dosing mechanism of a denitrification device according to claim 1, characterized in that: The rotating rod (11), turbine (12) and stirring blade (13) are all made of stainless steel.