Device for reducing ammonia escape during cement denitration

Abstract

The utility model discloses a device for reducing ammonia escape during cement denitration. The device comprises a stirring structure and a vertical movement structure, wherein the stirring structure is arranged at the upper part in an outer cylinder and is used for fully stirring and mixing a cement raw material and a catalyst; the vertical movement structure is used for realizing vertical movement of stirring blades of the stirring structure. The stirring rod drives the limiting wheel to slide on the upper surface of the sliding rail through the connecting plate, when the limiting wheel slides to the convex part of the concave-convex surface of the surface of the sliding rail, the elastic telescopic rod is extruded to enable the stirring blade below to ascend, and when the limiting wheel slides to the concave part of the sliding rail, the elastic telescopic rod is reset to enable the stirring blade to ascend. And the connecting plate and the limiting wheel are extruded downwards, and meanwhile, the stirring blades descend, so that the stirring blades slide up and down while horizontally rotating and stirring in the outer cylinder, and the stirring uniformity and efficiency are remarkably improved, thereby ensuring that a cement raw material and a catalyst are fully mixed, effectively improving the denitration effect and reducing ammonia escape.

Description

Technical Field

[0001] This utility model relates to the field of cement production and processing technology, and in particular to a device for reducing ammonia escape during cement denitrification. Background Technology

[0002] Reducing ammonia slip in cement denitrification refers to the phenomenon of unreacted ammonia escaping from the system when ammonia water or gas is used as a denitrification agent during cement production, through optimizing the denitrification process and operation. This process is crucial for improving denitrification efficiency, reducing environmental pollution, and lowering production costs. Ammonia slip not only leads to decreased denitrification efficiency but can also cause air pollution, impacting human health and the ecological environment. Therefore, improving denitrification technology and equipment, controlling the amount of ammonia added, and increasing ammonia utilization efficiency can effectively reduce ammonia slip.

[0003] In current cement production processes, in order to effectively reduce nitrogen oxide emissions and control ammonia escape, it is usually necessary to add specific catalysts or chemical additives to cement raw materials. However, one of the key steps in this process is to thoroughly mix the raw materials with added catalysts or additives to ensure their uniform distribution. Most existing mixing technologies rely on traditional mixing devices, which mainly use horizontal mixing motions. Due to the single mixing mode, they have limitations in achieving efficient mixing of raw materials. Therefore, these traditional mixing devices often exhibit low mixing efficiency in practical applications, making it difficult to achieve the ideal mixing effect, which in turn affects the denitrification efficiency and the control effect of ammonia escape. Utility Model Content

[0004] One objective of this invention is to provide a device for reducing ammonia escape during cement denitrification. This invention addresses the problem mentioned in the background that most existing mixing technologies rely on traditional mixing devices. These devices mainly employ horizontal mixing actions. Due to the limited mixing mode, they have limitations in achieving efficient mixing of raw materials. Therefore, such traditional mixing devices often exhibit low mixing efficiency in practical applications, making it difficult to achieve the ideal mixing effect, which in turn affects the denitrification efficiency and the control of ammonia escape.

[0005] According to an embodiment of the present invention, a device for reducing ammonia escape during cement denitrification includes a stirring structure installed in the upper part of an outer cylinder for fully mixing cement raw materials and catalysts, and a vertical motion structure for realizing the vertical movement of the stirring blades of the stirring structure. The stirring structure includes a drive motor and stirring blades. The drive motor is fixedly connected to the upper part of the outer cylinder, and a transmission rod is driven to the output end of the drive motor. A stirring rod is movably connected to the lower part of the transmission rod via a spline. The stirring blades are fixedly connected to the side surface of the stirring rod. The vertical motion structure includes a slide rail, a limiting wheel, and an elastic telescopic rod. A connecting plate is fixedly connected to the side surface of the stirring rod, and the limiting wheel is rotatably connected to the lower part of the connecting plate. The slide rail is fixedly connected to the upper inner part of the outer cylinder, and the surface of the slide rail is provided with concave and convex surfaces. An elastic telescopic rod is provided between the transmission rod and the stirring rod.

[0006] Preferably, a fixing plate is fixedly connected to the side surface of the transmission rod, a telescopic plate is fixedly connected to the side surface of the stirring rod, and the elastic telescopic rod is disposed between the telescopic plate and the fixing plate.

[0007] Preferably, the drive motor is fixedly connected to the bracket, and the bracket is fixedly connected to the upper part of the outer cylinder.

[0008] Preferably, the side surface of the bracket is fixedly connected with a pipe clamp for engaging and fixing the cement raw material and catalyst feed pipe.

[0009] Preferably, the side surface of the outer cylinder is fixedly connected to an observation window for observing the stirring reaction of cement raw materials and catalyst inside the outer cylinder.

[0010] Preferably, the lower part of the outer cylinder is fixedly connected to a discharge port, and a valve is installed inside the discharge port.

[0011] Preferably, the lower side surface of the outer cylinder is fixedly connected with a support leg for supporting the entire device.

[0012] Preferably, the side surface of the stirring rod is provided with a cleaning structure for cleaning the inside of the outer cylinder while stirring. The cleaning structure includes a connecting rod and a scraper. The scraper is fixedly connected to the side surface of the stirring rod through the connecting rod and is in close contact with the inner wall surface of the outer cylinder.

[0013] The beneficial effects of this utility model are:

[0014] This invention utilizes a vertical motion structure. While the mixing structure stirs and mixes cement raw materials and catalysts inside the outer cylinder, a transmission rod drives the mixing rod to rotate via a spline. The mixing blades then thoroughly stir the materials. Simultaneously, the mixing rod, through a connecting plate, drives a limiting wheel to slide on the upper surface of a slide rail. When the limiting wheel slides to the protruding part of the slide rail's surface, the elastic telescopic rod is compressed, causing the lower mixing blades to rise. When the limiting wheel slides to the recessed part of the slide rail, the elastic telescopic rod resets, pressing the connecting plate and the limiting wheel downwards, simultaneously causing the mixing blades to descend. As the limiting wheel rolls on the concave-convex surface of the slide rail, the mixing blades simultaneously rotate horizontally and slide up and down inside the outer cylinder, significantly improving the uniformity and efficiency of the mixing. This ensures thorough mixing of the cement raw materials and catalysts, effectively enhancing the denitrification effect and reducing ammonia escape.

[0015] This invention features a cleaning structure that rotates along with the stirring structure. The scraper of the cleaning structure adheres tightly to the inner wall surface of the outer cylinder, effectively cleaning the raw materials on the inner wall surface of the outer cylinder. This removes residual raw materials from the inner wall surface of the outer cylinder, preventing material accumulation and clumping, maintaining stirring efficiency while extending the service life of the equipment. The included pipe clamps facilitate the clamping and fixing of cement raw materials and catalyst feed pipes. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a device for reducing ammonia escape during cement denitrification proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the outer cylinder in a device for reducing ammonia escape during cement denitrification proposed in this utility model.

[0019] Figure 3 This invention proposes a device to reduce ammonia escape during cement denitrification. Figure 2 Enlarged view of point A in the middle;

[0020] In the diagram: 1. Outer cylinder; 2. Stirring structure; 201. Support; 202. Drive motor; 203. Transmission rod; 204. Stirring rod; 205. Stirring blade; 3. Cleaning structure; 301. Connecting rod; 302. Scraper; 4. Vertical motion structure; 401. Fixing plate; 402. Telescopic plate; 403. Spline; 404. Elastic telescopic rod; 405. Connecting plate; 406. Limiting wheel; 407. Slide rail; 408. Concave-convex surface; 5. Support leg; 6. Discharge port; 7. Valve; 8. Observation window; 9. Pipe clamp. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] refer to Figure 1-3A device for reducing ammonia escape during cement denitrification includes a stirring structure 2 installed in the upper part of an outer cylinder 1 for fully mixing cement raw materials and catalysts, and a vertical motion structure 4 for realizing the vertical movement of the stirring blades 205 of the stirring structure 2. The stirring structure 2 includes a drive motor 202 and stirring blades 205. The drive motor 202 is fixedly connected to the upper part of the outer cylinder 1, and the output end of the drive motor 202 is driven by a transmission rod 203. The lower part of the transmission rod 203 is movably connected via a spline 403. A stirring rod 204 is provided, and a stirring blade 205 is fixedly connected to the side surface of the stirring rod 204. The vertical motion structure 4 includes a slide rail 407, a limiting wheel 406, and an elastic telescopic rod 404. A connecting plate 405 is fixedly connected to the side surface of the stirring rod 204, and the limiting wheel 406 is rotatably connected to the lower part of the connecting plate 405. The slide rail 407 is fixedly connected to the upper inner part of the outer cylinder 1, and the surface of the slide rail 407 is provided with a concave-convex surface 408. An elastic telescopic rod 404 is provided between the transmission rod 203 and the stirring rod 204. While the mixing structure 2 mixes the cement raw materials and catalysts inside the outer cylinder 1, the transmission rod 203 drives the mixing rod 204 to rotate via the spline 403, which in turn drives the mixing blades 205 to fully mix the materials. Simultaneously, the mixing rod 204 drives the limiting wheel 406 to slide on the upper surface of the slide rail 407 via the connecting plate 405. When the limiting wheel 406 slides to the protruding part of the uneven surface 408 on the slide rail 407, the elastic telescopic rod 404 is compressed, causing the lower mixing blades 205 to rise and stop. When wheel 406 slides to the recessed part of slide rail 407, elastic telescopic rod 404 resets, pressing connecting plate 405 and limiting wheel 406 downwards, while simultaneously causing mixing blade 205 to descend. As limiting wheel 406 rolls on the concave and convex surface 408 of slide rail 407, mixing blade 205 rotates horizontally and slides up and down inside outer cylinder 1, significantly improving the uniformity and efficiency of mixing, thereby ensuring thorough mixing of cement raw materials and catalyst, effectively improving denitrification effect and reducing ammonia escape.

[0023] Example 1: A fixed plate 401 is fixedly connected to the side surface of the transmission rod 203, and a telescopic plate 402 is fixedly connected to the side surface of the stirring rod 204. The elastic telescopic rod 404 is set between the telescopic plate 402 and the fixed plate 401. The drive motor 202 is fixedly connected to the bracket 201, and the bracket 201 is fixedly connected to the upper part of the outer cylinder 1. A pipe clamp 9 for locking and fixing the cement raw material and catalyst feed pipe is fixedly connected to the side surface of the bracket 201. The pipe clamp 9 facilitates the fixing and clamping of the cement raw material and catalyst feed pipe 9. An observation window 8 for observing the stirring reaction of the cement raw material and catalyst inside the outer cylinder 1 is fixedly connected to the side surface of the outer cylinder 1. A discharge port 6 is fixedly connected to the lower part of the outer cylinder 1. A valve 7 is installed inside the discharge port 6. A support leg 5 for supporting the entire device is fixedly connected to the lower part of the side surface of the outer cylinder 1.

[0024] Example 2: The side surface of the stirring rod 204 is provided with a cleaning structure 3 for cleaning the inside of the outer cylinder 1 while stirring. The cleaning structure 3 includes a connecting rod 301 and a scraper 302. The scraper 302 is fixedly connected to the side surface of the stirring rod 204 through the connecting rod 301. The scraper 302 is in close contact with the inner wall surface of the outer cylinder 1. The cleaning structure 3 rotates with the stirring structure 2. By having the scraper 302 of the cleaning structure 3 in close contact with the inner wall surface of the outer cylinder 1, the raw materials on the inner wall surface of the outer cylinder 1 are cleaned. This effectively removes residual raw materials from the inner wall surface of the outer cylinder 1, prevents raw material accumulation and clumping, maintains stirring efficiency, and extends the service life of the equipment.

[0025] This device achieves efficient mixing of cement raw materials and catalyst through the synergistic action of the stirring structure 2 and the vertical motion structure 4, thereby reducing ammonia escape during the denitrification process. The drive motor 202 is located on the upper part of the outer cylinder 1 and is connected to the stirring rod 204 through the transmission rod 203. The stirring blade 205 is fixed on the side surface of the stirring rod 204. After the motor is started, the transmission rod 203 drives the stirring rod 204 to rotate through the spline 403, and the stirring blade 205 performs horizontal stirring accordingly. At the same time, the limiting wheel 406 slides on the concave and convex surface 408 of the slide rail 407 under the drive of the connecting plate 405. Under the action of the elastic telescopic rod 404, the stirring blade 205 achieves vertical up and down movement, thereby realizing three-dimensional stirring and improving the mixing uniformity.

[0026] In the operation process, the feed pipe is first fixed to the support 201 by the pipe clamp 9, and then the drive motor 202 is turned on. Cement raw materials and catalyst enter the outer cylinder 1 through the feed pipe. During the mixing process, the cleaning structure 3 rotates with the mixing rod 204, and the scraper 302 is in close contact with the inner wall of the outer cylinder 1 to remove residual raw materials and prevent accumulation and clumping. The mixing situation is monitored through the observation window 8 to ensure the mixing effect. After the mixing is completed, the drive motor 202 is turned off, and the discharge port 6 is controlled by the valve 7 to discharge the material. The entire device is supported by the support legs 5 to ensure the stability of the mixing process. This design not only ensures the full mixing of raw materials and catalyst and improves the denitrification effect, but also reduces ammonia escape. At the same time, the cleaning structure 3 extends the service life of the equipment, achieving a dual improvement in environmental protection and economic benefits.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for reducing ammonia escape during cement denitrification, characterized in that, The system includes a stirring structure (2) installed in the upper part of the outer cylinder (1) for fully mixing cement raw materials and catalysts, stirring blades (205) for realizing the stirring structure (2), and a vertical motion structure (4) for vertical movement. The stirring structure (2) includes a drive motor (202) and stirring blades (205). The drive motor (202) is fixedly connected to the upper part of the outer cylinder (1). The output end of the drive motor (202) is connected to a transmission rod (203). The lower part of the transmission rod (203) is movably connected to a stirring rod (204) through a spline (403). The mixing blade (205) is fixedly connected to the side surface of the stirring rod (204). The vertical motion structure (4) includes a slide rail (407), a limiting wheel (406), and an elastic telescopic rod (404). A connecting plate (405) is fixedly connected to the side surface of the stirring rod (204). The limiting wheel (406) is rotatably connected to the lower part of the connecting plate (405). The slide rail (407) is fixedly connected to the upper inner part of the outer cylinder (1). The surface of the slide rail (407) is provided with a concave-convex surface (408). An elastic telescopic rod (404) is provided between the transmission rod (203) and the stirring rod (204).

2. The device for reducing ammonia escape during cement denitrification according to claim 1, characterized in that, A fixing plate (401) is fixedly connected to the side surface of the transmission rod (203), and a telescopic plate (402) is fixedly connected to the side surface of the stirring rod (204). The elastic telescopic rod (404) is disposed between the telescopic plate (402) and the fixing plate (401).

3. The device for reducing ammonia escape during cement denitrification according to claim 1, characterized in that, The drive motor (202) is fixedly connected to the bracket (201), and the bracket (201) is fixedly connected to the upper part of the outer cylinder (1).

4. The device for reducing ammonia escape during cement denitrification according to claim 3, characterized in that, The side surface of the bracket (201) is fixedly connected with a pipe clamp (9) for engaging and fixing the cement raw material and catalyst feed pipe.

5. The device for reducing ammonia escape during cement denitrification according to claim 1, characterized in that, The outer cylinder (1) is fixedly connected to an observation window (8) for observing the stirring reaction of cement raw materials and catalyst inside the outer cylinder (1).

6. The device for reducing ammonia escape during cement denitrification according to claim 1, characterized in that, The lower part of the outer cylinder (1) is fixedly connected to a discharge port (6), and a valve (7) is installed inside the discharge port (6).

7. The device for reducing ammonia escape during cement denitrification according to claim 1, characterized in that, The lower side surface of the outer cylinder (1) is fixedly connected to a support leg (5) for supporting the entire device.

8. The device for reducing ammonia escape during cement denitrification according to claim 1, characterized in that, The side surface of the stirring rod (204) is provided with a cleaning structure (3) for cleaning the inside of the outer cylinder (1) while stirring. The cleaning structure (3) includes a connecting rod (301) and a scraper (302). The scraper (302) is fixedly connected to the side surface of the stirring rod (204) through the connecting rod (301) and the scraper (302) is in close contact with the inner wall surface of the outer cylinder (1).

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