Movable filter sieve arranged in cement denitration tower

Abstract

The utility model discloses a movable filter sieve built in a cement denitration tower, which comprises two filter plates and a catalyst plate, and the catalyst plate is arranged between the two filter plates and is used for filtering after a denitration catalyst is catalyzed; the filter sieve comprises a catalyst fixing frame and two filter plate fixing frames, the two filter plate fixing frames are movably mounted at the upper end and the lower end of the catalyst fixing frame through hinges, and the corresponding filter plates are clamped in the filter plate fixing frames, so that the filter plates on the filter sieve are convenient to mount and replace. A traditional integrated filter sieve is arranged to be of a split structure, the filter plate fixing frames are movably connected to the two sides of the catalyst fixing frame through the hinges, and then the filter plates are clamped and installed in the filter plate fixing frames, so that the filter plates are convenient to replace and clean in the denitration process, and the denitration efficiency is improved. Therefore, the flue gas denitration efficiency and denitration quality in the cement denitration tower are improved.

Description

A movable filter screen built into a cement denitrification tower Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology for cement processing, specifically to a movable filter screen built into a cement denitrification tower. Background Technology

[0002] Cement denitrification towers (environmental protection equipment used to reduce nitrogen oxide emissions) typically use filter screens to intercept dust, catalyst particles, or other impurities generated during the denitrification process, ensuring stable system operation and protecting downstream equipment.

[0003] Existing cement denitrification tower filters (a desulfurization and denitrification system with application number 201920335269.3) use an integrated filter plate within the denitrification chamber to catalytically denitrate the flue gas entering the chamber. Because the filter is an integrated structure and not movable, it cannot be opened as needed to replace, clean, or add catalyst to the filter plate, thus affecting the catalytic filtration efficiency and quality of the flue gas inside the cement denitrification tower. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a movable filter screen built into a cement denitrification tower to solve the technical problem that the existing cement denitrification tower filter screen is a one-piece structure and is not designed to be movable, so that the filter screen cannot be opened in time as needed, thereby affecting the replacement, cleaning or addition of catalyst on the filter plate, which affects the catalytic filtration efficiency and catalytic filtration quality of the flue gas inside the cement denitrification tower.

[0005] According to the technical solution provided in the embodiments of this application, a movable filter screen built into a cement denitrification tower includes two filter plates and a catalyst plate. The catalyst plate is installed between the two filter plates and is used for filtration after denitrification catalyst catalysis.

[0006] The filter screen includes a catalyst fixing frame and two filter plate fixing frames. The two filter plate fixing frames are movably installed on the upper and lower ends of the catalyst fixing frame by hinges, and each filter plate fixing frame has a corresponding filter plate snapped in, which facilitates the installation and replacement of the filter plates on the filter screen.

[0007] Several fixing pins are vertically installed in the fixing slots on the two filter plate fixing frames to fix the two filter plate fixing frames to the catalyst fixing frame.

[0008] Furthermore, corresponding sealing grooves are provided on both sides of the catalyst fixing frame, and corresponding sealing strips are provided on the connecting surfaces of each filter plate fixing frame and the catalyst fixing plate, with each sealing strip snapping into the corresponding sealing groove.

[0009] Furthermore, the sealing groove and the sealing strip form a ring structure.

[0010] Furthermore, the bottom of the fixing pin is provided with two corresponding snap-fit ​​blocks, and the fixing groove is provided with two corresponding snap-fit ​​slots, so that the two snap-fit ​​blocks snap into the corresponding snap-fit ​​slots.

[0011] Furthermore, the snap-fit ​​groove has an L-shaped structure.

[0012] Furthermore, the fixing pin has a cylindrical structure with an adjustment groove at its top and an adjustment handle inside the adjustment groove for rotating and adjusting the fixing pin.

[0013] Furthermore, the catalyst fixing frame and the filter plate fixing frame have a rectangular structure.

[0014] Furthermore, the fixing groove is composed of a first connecting groove and a second connecting groove. The first connecting groove is vertically disposed on the filter plate fixing frame, while the second connecting groove is disposed on the catalyst fixing frame, so that the fixing pin passes through the first connecting groove and the second connecting groove to fix the filter plate fixing frame to the catalyst fixing frame.

[0015] In summary, the beneficial effects of this application are as follows:

[0016] 1. By setting the traditional integrated filter screen into a split structure, and using hinges to movably connect the filter plate fixing frame to both sides of the catalyst fixing frame, the filter plate is snapped into the filter plate fixing frame, which facilitates the replacement and cleaning of the filter plate during the denitrification process, thereby improving the denitrification efficiency and quality of flue gas in the cement denitrification tower.

[0017] Second, by setting several fixing slots on each filter plate fixing frame and engaging corresponding fixing pins in each fixing slot, the locking blocks on the fixing pins move along the L-shaped locking slots on the fixing slots, thereby fixing the filter plate fixing frame to the catalyst fixing frame, so that the filter plate and the catalyst plate fit tightly together, thereby filtering the flue gas passing through the catalyst through the filter screen, thus improving the flue gas denitrification efficiency and denitrification quality in the cement denitrification tower. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 is a schematic diagram of the connection structure between the present invention and the cement denitrification tower body;

[0020] Figure 2 is a schematic diagram of the overall structure of the filter plate of this utility model;

[0021] Figure 3 is a schematic diagram of the filter screen of this utility model in the open state;

[0022] Figure 4 is a magnified view of point 320 in Figure 3;

[0023] Figure 5 is an enlarged view of section B in Figure 3.

[0024] The following are labeled in the diagram: Filter plate-100, catalyst plate-200, filter screen-300, filter plate fixing frame-310, fixing groove-311, snap-fit ​​groove-312, sealing strip-313, catalyst fixing frame-320, sealing groove-321, fixing pin-330, snap-fit ​​block-331, adjusting handle-332, limiting plate-333, cement denitrification tower-400. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] A movable filter screen built into a cement denitrification tower, the structure of which is shown in Figures 1-5, includes two filter plates 100 and a catalyst plate 200. The catalyst plate 200 is installed between the two filter plates 100 for post-catalytic filtration of flue gas in the cement denitrification tower 400. The filter screen 300 includes a catalyst fixing frame 320 and two filter plate fixing frames 310. The catalyst fixing frame 320 and the filter plate fixing frames 310 have a rectangular structure, and the two filter plate fixing frames 310 are movably installed at the upper and lower ends of the catalyst fixing frame 320 by hinges. Each filter plate fixing frame 310 has a corresponding filter plate 10 snapped into it. 0, which facilitates the installation and replacement of filter plates 100 on filter screen 300, and catalyst plate 200 is snapped into catalyst fixing frame 320, making it easy to add and replenish catalyst in catalyst plate 200, thereby improving the denitrification filtration efficiency of filter screen 300 for flue gas in cement denitrification tower 400; several fixing pins 330 are vertically installed in each fixing groove 311 on two filter plate fixing frames 310, used to fix the two filter plate fixing frames 310 to catalyst fixing frame 320, thereby sealing the filter plate fixing frame 310 in catalyst fixing frame 320 and preventing flue gas leakage during catalysis.

[0028] As a preferred embodiment, please refer to Figure 3. The catalyst fixing frame 320 is provided with corresponding sealing grooves 321 on both sides, and each filter plate fixing frame 310 is provided with a corresponding sealing strip 313 on the connecting surface with the catalyst fixing plate. The sealing grooves 321 and sealing strips 313 form an annular structure so that each sealing strip 313 is engaged in the corresponding sealing groove 321, thereby forming a sealed structural frame between the filter plate fixing frame 310 and the catalyst fixing plate, thereby preventing flue gas leakage during the denitrification process and thus affecting catalytic denitrification.

[0029] As a preferred embodiment, please refer to Figures 3, 4 and 5. The bottom of the fixing pin 330 is provided with two corresponding snap-fit ​​blocks 331, and the fixing groove 311 is provided with two corresponding snap-fit ​​slots 312, so that the two snap-fit ​​blocks 331 are snapped into the corresponding snap-fit ​​slots 312. The snap-fit ​​slots 312 are L-shaped, so that the two snap-fit ​​blocks 331 on the fixing pin 330 can move along the path of the L-shaped snap-fit ​​slots 312 and then rotate and snap into the fixing grooves 311. Similarly, rotating in the opposite direction can release the locking of the fixing pin 330.

[0030] As a preferred embodiment, please refer to Figure 5. The fixing pin 330 has a cylindrical structure with an adjustment groove at its top. An adjustment handle 332 is provided in the adjustment groove, which allows the operator to rotate and adjust the fixing pin 330 through the adjustment handle 332. The top of the fixing pin 330 is also provided with a limiting plate 333 with a diameter larger than that of the fixing groove 311. The limiting plate 333 is engaged in the limiting groove at the top of the fixing groove 311, thereby fixing the fixing pin 330 to the filter plate fixing frame 310.

[0031] As a preferred embodiment, please refer to Figures 3 and 4. The fixing groove 311 is composed of a first connecting groove and a second connecting groove. The first connecting groove is vertically disposed on the filter plate fixing frame 310, while the second connecting groove is disposed on the catalyst fixing frame 320, so that the fixing pin 330 passes through the first connecting groove and the second connecting groove to fix the filter plate fixing frame 310 on the catalyst fixing frame 320.

[0032] The working principle of this utility model of a movable filter screen built into a cement denitrification tower is as follows:

[0033] In the process of catalytic denitrification of high-temperature flue gas in the cement denitrification tower 400 using filter screen 300, solid nitrogen oxides are generated after the catalytic reaction, which affects the quality of catalytic denitrification in the tower. The existing filter screen 300 is a one-piece structure, not a separate structure, making it difficult to replace the filter plate 100 and catalyst plate 200 in a timely manner, and resulting in high overall replacement costs. By converting the traditional one-piece filter screen 300 into a separate structure, and using hinges to movably connect the filter plate fixing frame 310 to both sides of the catalyst fixing frame 320, the filter plate 100 is snapped into the filter plate fixing frame 310, and the catalyst plate 200 is installed in the catalyst fixing frame 320. This facilitates the replacement and cleaning of the filter plate 100 during the denitrification process, thereby improving the denitrification efficiency and quality of the flue gas in the cement denitrification tower 400. Furthermore, the filter plate fixing frame 310... During the sealing and fixing process between the filter plate 100 and the catalyst fixing frame 320, several fixing grooves 311 are set on each filter plate fixing frame 310, and corresponding fixing pins 330 are engaged in each fixing groove 311. This allows the engaging blocks 331 on the fixing pins 330 to move along the L-shaped engaging grooves 312 on the fixing grooves 311, thereby fixing the filter plate fixing frame 310 onto the catalyst fixing frame 320. This ensures that the filter plate 100 and the catalyst plate 200 are tightly fitted together, allowing the filter screen 300 to filter the flue gas passing through the catalyst. During the sealing and fixing process between the filter plate fixing frame 310 and the catalyst fixing frame 320, the sealing strip 313 on the filter plate fixing frame 310 engages in the sealing groove 321 on the catalyst fixing frame 320 to prevent the flue gas from leaking during the catalytic process, thereby improving the filtration effect of the filter screen 300 and thus improving the flue gas denitrification efficiency and denitrification quality in the cement denitrification tower 400.

[0034] The above description is merely a preferred embodiment of this application and an explanation of the technical principles and solutions employed. Furthermore, the scope of the utility model involved in this application is not limited to the specific combination of the above-described technical features, but should also cover other technical solutions formed by any combination of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A movable filter screen built into a cement denitrification tower, comprising two filter plates (100) and a catalyst plate (200), wherein the catalyst plate (200) is installed between the two filter plates (100) for filtration after denitrification catalyst catalysis, characterized in that: The filter screen (300) includes a catalyst fixing frame (320) and two filter plate fixing frames (310). The two filter plate fixing frames (310) are movably installed on the upper and lower ends of the catalyst fixing frame (320) by hinges, and each filter plate fixing frame (310) has a corresponding filter plate (100) snapped in it, which facilitates the installation and replacement of the filter plate (100) on the filter screen (300). Several fixing pins (330) are vertically installed in each fixing groove (311) on the two filter plate fixing frames (310) for fixing the two filter plate fixing frames (310) to the catalyst fixing frame (320).

2. The movable filter screen built into a cement denitrification tower according to claim 1, characterized in that: The catalyst fixing frame (320) has corresponding sealing grooves (321) on both sides, and each filter plate fixing frame (310) and the catalyst fixing plate connection surface are provided with corresponding sealing strips (313), and each sealing strip (313) is snapped into the corresponding sealing groove (321).

3. The movable filter screen built into a cement denitrification tower according to claim 2, characterized in that: The sealing groove (321) and the sealing strip (313) form an annular structure.

4. The movable filter screen built into a cement denitrification tower according to claim 1, characterized in that: The bottom of the fixing pin (330) is provided with two corresponding snap-fit ​​blocks (331), and the fixing groove (311) is provided with two corresponding snap-fit ​​grooves (312), so that the two snap-fit ​​blocks (331) are snapped into the corresponding snap-fit ​​grooves (312).

5. The movable filter screen built into a cement denitrification tower according to claim 4, characterized in that: The snap-fit ​​groove (312) has an L-shaped structure.

6. The movable filter screen built into a cement denitrification tower according to claim 4, characterized in that: The fixing pin (330) has a cylindrical structure and an adjustment groove is provided on its top. An adjustment handle (332) is provided in the adjustment groove for the rotation adjustment of the fixing pin (330).

7. The movable filter screen built into a cement denitrification tower according to claim 1, characterized in that: The catalyst fixing frame (320) and the filter plate fixing frame (310) have a rectangular structure.

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