Truss structure for tail gas purification system of prilling tower

Abstract

The invention provides a truss structure for a granulation tower tail gas purification system, and belongs to the technical field of granulation tower tail gas purification devices. The steel frame structure of the granulation tower tail gas purification device uniformly bears the weight of equipment above the cleaning chamber, the induced draft fan and the pulse ash removal system arranged above the purification device body and the weight of the purification device body, so that the safety of the granulation tower tail gas purification device and the granulation tower is ensured; the steel frame structure of the tail gas purification device of the granulation tower adopts a #-shaped truss structure, generally, at least three trusses are X three trusses, and the number of the trusses is increased or decreased according to actual conditions. The problems that in the prior art, a supporting structure body is insufficient in load bearing, the weight of a purification device needs to be borne through a steel frame, and the purification device needs to be dispersed to a tower body of a prilling tower are solved.

Description

Technical Field

[0001] This invention belongs to the field of granulation tower tail gas purification technology, specifically relating to a truss structure for a granulation tower tail gas purification system. Background Technology

[0002] Currently, urea is mainly used as an agricultural fertilizer, and it is primarily available on the market in granular form. Urea granulation mainly uses two methods: tower granulation and mechanical granulation. Existing urea granulation towers utilize natural ventilation. Molten urea is sprayed through granulation nozzles, and the granules are cooled by natural ventilation. The airflow velocity within the tower affects not only the particle settling speed but also the amount of urea dust emitted. Due to the chemical reaction process, nozzle spraying, and abnormal operating conditions, the exhaust gas from the top of the granulation tower contains a significant amount of dust, primarily CO(NH2)2, resulting in substantial loss of value and severe environmental pollution.

[0003] There are two types of dust recovery technologies for urea granulation towers: dry and wet. Traditional wet dust collection technology involves installing a water-washing jet atomizing device at the top of the urea granulation tower to absorb or adsorb urea dust particles using water-based substances. However, it has an insurmountable technical drawback: a large number of urea dust particles "escape" from the top of the tower and overflow into the atmosphere, forming pollutants similar to "smoke," causing secondary pollution to the surrounding environment. Dry dust recovery technology represents a significant technological breakthrough, overcoming the prejudice that "dry baghouse dust collectors are unsuitable for urea granulation equipment." Dry dust recovery technology involves installing a dust recovery device at the top of the urea granulation tower, achieving near-zero emission urea dust recovery—a historic and innovative technology.

[0004] Currently, urea producers are abandoning their original wet dust removal technology and opting for dry dust recovery technology. The purification device in dry dust recovery technology for urea granulation exhaust gas is typically installed at the top of the granulation tower. It consists of the purification device body, a cleanroom, an induced draft fan, and a pulse cleaning system. The cleanroom, induced draft fan, and pulse cleaning system, located above the purification device body, can weigh tens of tons. This weight is unsafe to bear due to insufficient load-bearing capacity of the purification device body itself. Therefore, a steel frame is needed to support this weight and distribute it across the granulation tower, which is impractical to rely on the original support structure. Summary of the Invention

[0005] Based on the technical problems existing in the prior art, the present invention proposes a truss structure for a granulation tower exhaust gas purification system. The present invention solves the problem that the supporting structure body of the prior art is not strong enough, and that the weight of the purification device needs to be borne by a steel frame and the purification device needs to be distributed on the granulation tower body.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: providing a truss structure for a granulation tower tail gas purification system, wherein the steel frame structure of the granulation tower tail gas purification device evenly bears the weight of the equipment above the purification device body, including the cleaning chamber, the induced draft fan, and the pulse dust removal system, as well as the weight of the purification device body, ensuring the safety of the granulation tower tail gas purification device and the granulation tower; the steel frame structure of the granulation tower tail gas purification device adopts a grid-shaped truss structure, typically at least 3 x 3 trusses, which can be increased or decreased according to actual conditions.

[0007] The upper and lower chords of each truss are reinforced with pipes, profiles, and plates. Preferably, the steel frame structure of the granulation tower exhaust gas purification device further includes longitudinal trusses and transverse trusses. Both longitudinal and transverse trusses are supported on the granulation tower body by columns. The longitudinal trusses include end reinforcing ribs, which are fixedly connected to the columns near the edge of the purification device body. The transverse trusses also include end reinforcing ribs, which are fixedly connected to the columns near the edge of the purification device body.

[0008] Furthermore, the support positions of the columns are determined based on the condition of the granulation tower body and the tail gas purification device of the granulation tower, and the columns are reinforced with diagonal braces.

[0009] Preferably, the supporting or connecting components between the upper and lower chords of each truss are installed using welding or bolt fasteners. More preferably, the longitudinal truss adopts a structure of 3-7 main beams arranged in parallel, with multiple transversely fixed support beams between the main beams; the transverse beams near the end stiffeners of the longitudinal truss have a tensile strength 2-5 times greater than other transverse beams; the transverse truss adopts a structure of 3-7 main beams arranged in parallel, with multiple transversely fixed support beams between the main beams; the transverse beams near the end stiffeners of the transverse truss have a tensile strength 2-5 times greater than other transverse beams.

[0010] Furthermore, based on the main beam structure and the columns near the edge of the purification device body in the longitudinal truss, the end stiffeners near the longitudinal truss are bent polygons; based on the main beam structure and the columns near the edge of the purification device body in the transverse truss, the end stiffeners near the transverse truss are bent polygons.

[0011] Preferably, the columns are made of pipes, profiles, or plates, and are connected and supported to the horizontal or vertical trusses via movable connecting parts. Each horizontal or vertical truss is reinforced with diagonal bracing, the angle between the diagonal brace and the vertical direction of the column not exceeding 45°; alternatively, the horizontal or vertical trusses are multi-layered, meaning multiple layers of horizontal or vertical trusses are stacked together to form the steel frame structure of the granulation tower exhaust gas purification device.

[0012] Furthermore, a truss structure for the granulation tower exhaust gas purification system is installed on the tower body. A support structure is provided on the upper surface of the tower body. This support structure includes a support assembly and a reinforcing assembly. The support assembly includes four main columns, arranged in pairs. The lower end of each pair of main columns is fixedly connected to the tower body, and the upper end of each pair of main columns is fixedly connected to a central crossbar. Each pair of main columns is also fixedly connected to a connecting rod located below the central crossbar. Each pair of main columns and the central crossbar together form the main truss, which are intersected in a cross shape. Next, several main stabilizing rods are fixedly connected to the side of the connecting rods and crossbars that are close to each other. Eight auxiliary columns are fixedly connected to the upper surface of the tower body. The eight auxiliary columns are in groups of two. The upper end of each group of auxiliary columns is fixedly connected to a side crossbar. Each group of auxiliary columns is fixedly connected to an auxiliary rod. Each group of auxiliary columns and auxiliary rods together form an auxiliary truss. There is an auxiliary truss on each side of the main truss. Several auxiliary stabilizing rods are fixedly connected to the side of the side crossbars and auxiliary rods that are close to each other. The four auxiliary trusses are in groups of two. The auxiliary trusses in each group are intersected and connected.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0014] 1. In this invention, before assembling the support structure above the tower body, the limiting frame can be welded to the top of the tower body first. Then, the four columns and eight auxiliary columns are fixed in sequence in the corresponding main and auxiliary embedding slots. Then, the corresponding central crossbar, matching rod, side crossbar, auxiliary rod, main stabilizing rod and auxiliary stabilizing rod are welded together. By setting up the support structure, the force above the truss can be evenly distributed through the central crossbar, matching rod, side crossbar, auxiliary rod, main stabilizing rod and auxiliary stabilizing rod connected between the four main columns and eight auxiliary columns. The steel frame structure can evenly bear the weight of various equipment above, ensuring the safety of the cleaning room, induced draft fan, pulse cleaning system and other devices and granulation tower above the truss.

[0015] 2. In this invention, two Z-shaped frames are then welded together to fix the main truss and the auxiliary trusses on both sides, so that the main truss and the auxiliary trusses become a whole and the force can be shared between them. Welding the end fixing rods can fix one main column and two auxiliary columns into a whole, thereby improving the overall stability. By setting the reinforcement components, the overall load-bearing capacity and stability of the support structure can be further improved.

[0016] 3. In this invention, when the steel frame structure above the tower body is deformed due to prolonged use, the auxiliary structure can provide support. However, since the sliding block can slide within the sliding groove, the support plate provides a certain buffer space for the support structure above. During this process, the friction between the anti-slip protrusions and the sliding block reduces the impact force, preventing the support plate from suddenly breaking under stress. The first and second limiting rods can limit the sliding block and the sliding plate, preventing them from falling off when sliding violently. The first and second springs can generate compressive force in the sliding direction of the sliding block and the sliding plate, further reducing the impact force. By setting up the auxiliary structure, an additional layer of protection can be added to the support structure, effectively avoiding the risk of various equipment falling off due to deformation caused by aging of the support structure over time, thus preventing unnecessary losses.

[0017] 4. In this invention, after the support structure is assembled, the bottom of the connection between the lifting plate and the two auxiliary rods can be fixed. Then, the lifting rope and the positioning ring are pulled down by the pull rod. Then, the positioning rod is rotated by the handle to make the positioning rod threadedly connected to the irregular hole on the lifting frame, thereby fixing the lifting rope. The U-shaped plate can limit the lifting rope so that the lifting rope is still in front of the irregular hole even when it is not fixed. By setting the lifting structure, the lifting rope can be pulled down to different depths and fixed as needed. The connection between the two auxiliary rods of the support structure is fixed by the tension, so that the force is more even. Attached Figure Description

[0018] Figure 1 This invention provides a three-dimensional structural diagram of a truss structure for a granulation tower tail gas purification system.

[0019] Figure 2 This invention proposes a truss structure for a granulation tower tail gas purification system. Figure 1 Enlarged schematic diagram of a local structure;

[0020] Figure 3 This invention proposes a truss structure for a granulation tower tail gas purification system. Figure 2 Partial structural disassembly diagram;

[0021] Figure 4This invention provides a schematic diagram of the support structure for a truss structure used in a granulation tower tail gas purification system.

[0022] Figure 5 This invention provides a partial structural diagram of the support structure of a truss structure for a granulation tower tail gas purification system.

[0023] Figure 6 This invention proposes a truss structure for a granulation tower tail gas purification system. Figure 5 Partial structural bottom view;

[0024] Figure 7 This invention provides a schematic diagram of the auxiliary structure disassembly for a truss structure used in a granulation tower tail gas purification system.

[0025] Figure 8 This invention proposes a truss structure for a granulation tower tail gas purification system. Figure 2 Enlarged diagram of part A;

[0026] Figure 9 This invention provides a schematic diagram of the disassembly of a truss structure ground crane for a granulation tower exhaust gas purification system.

[0027] Figure 10 This invention presents a partial structural disassembly diagram of a truss-structured ground-mounted structure for a granulation tower exhaust gas purification system.

[0028] Explanation of reference numerals in the attached drawings: 1. Tower body; 2. Support structure; 21. Support assembly; 211. Main column; 212. Auxiliary column; 213. Central crossbar; 214. Matching rod;

[0029] 215. Side crossbar; 216. Auxiliary bar; 217. Main stabilizer bar; 218. Secondary stabilizer bar;

[0030] 219. End fixing rod; 22. Reinforcing component; 221. Z-shaped frame; 222. Main positioning plate; 223. Auxiliary positioning plate; 224. Limiting frame; 225. Main embedding groove; 226. Auxiliary embedding groove; 3. Auxiliary structure; 31. Auxiliary component; 311. Sliding groove; 312. Sliding block; 313. Anti-slip protrusion; 314. Auxiliary groove; 315. Sliding plate; 316. Damping plate; 317. Support plate; 32. Stabilizing component; 32 1. First limiting rod; 322. First spring; 333. Second limiting rod; 334. Second spring; 4. Lifting structure; 41. Lifting assembly; 411. Lifting frame; 412. Pulley; 413. Lifting rope; 414. Auxiliary block; 415. Lifting plate; 416. Positioning ring; 417. Positioning rod; 418. Irregular hole; 42. Assisting assembly; 421. Pull-down rod; 422. Handle; 423. Grip sleeve; 424. U-shaped plate. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0033] This invention proposes a steel frame structure for a granulation tower exhaust gas purification device. This steel frame structure evenly bears the weight of various equipment located above the purification device body, including the cleanroom, induced draft fan, and pulse cleaning system, as well as the weight of the purification device itself, ensuring the safety of both the granulation tower and the purification device. The steel frame structure adopts a grid-like truss structure, typically at least 3 x 3 trusses, with adjustments made based on actual conditions. Each upper and lower chord is reinforced with pipes, profiles, and plates. The steel frame structure further includes longitudinal and transverse trusses, both supported by columns on the granulation tower body. The longitudinal trusses include end reinforcement ribs, which are fixedly connected to columns near the edge of the purification device body. Similarly, the transverse trusses also include end reinforcement ribs, which are fixedly connected to columns near the edge of the purification device body. The support positions of the columns are determined based on the condition of the granulation tower and the exhaust gas purification device. Diagonal bracing (pipes, profiles, or plates) is used to reinforce the columns. Preferably, the support components or connecting components between the upper and lower chords of each frame can be installed using welding or bolt fastening.

[0034] Furthermore, the longitudinal truss preferably consists of 3-7 parallel main beams, with multiple transversely fixed support beams between the main beams. The transverse beams near the end stiffeners of the longitudinal truss have a tensile strength 2-5 times greater than other transverse beams. Similarly, the transverse truss preferably consists of 3-7 parallel main beams, with multiple transversely fixed support beams between the main beams. The transverse beams near the end stiffeners of the transverse truss have a tensile strength 2-5 times greater than other transverse beams. Even further, depending on the main beam structure and the columns near the edge of the purification unit body in the longitudinal truss, the end stiffeners near the longitudinal truss are bent polygons. Likewise, depending on the main beam structure and the columns near the edge of the purification unit body in the transverse truss, the end stiffeners near the transverse truss are bent polygons. Even further, the columns are made of materials such as pipes, profiles, and plates, and are connected and supported to the transverse or longitudinal trusses via bolts or other movable connecting components.

[0035] In a preferred embodiment, each transverse or longitudinal truss is reinforced with diagonal bracing (pipes, profiles, plates), and the angle of the diagonal bracing (the angle with respect to the vertical direction of the column) is preferably no greater than 45°. Furthermore, the transverse or longitudinal truss is a multi-layered structure, meaning multiple layers of transverse or longitudinal trusses are stacked together to form the steel frame structure of the granulation tower exhaust gas purification device.

[0036] The following further describes the detailed structure of the truss structure for the granulation tower exhaust gas purification system of the present invention. The truss structure for the granulation tower exhaust gas purification system is installed on the tower body. A support structure is provided on the upper surface of the tower body. The support structure includes a support assembly and a reinforcing assembly. The support assembly includes four main columns, arranged in pairs. The lower end of each pair of main columns is fixedly connected to the tower body. A central crossbar is fixedly connected to the upper end of each pair of main columns. A matching rod is fixedly connected to each pair of main columns, located below the central crossbar. Each pair of main columns and the central crossbar together form the main truss. The main trusses are interconnected in a cross shape. Several main stabilizing rods are fixedly connected to the adjacent sides of the connecting rods and crossbars. Eight auxiliary columns are fixedly connected to the upper surface of the tower body, arranged in pairs. Each pair of auxiliary columns has a side crossbar fixedly connected to its upper end, and each pair also has an auxiliary rod fixedly connected. Each pair of auxiliary columns and auxiliary rods forms an auxiliary truss. There is one auxiliary truss on each side of the main truss. Several auxiliary stabilizing rods are fixedly connected to the adjacent sides of the side crossbars and auxiliary rods. The four auxiliary trusses are arranged in pairs, and these pairs are interconnected in a cross shape. By adopting the above technical solution and setting up a support structure, the force on the truss above can be evenly distributed through the central crossbar, connecting rods, side crossbars, auxiliary rods, main stabilizing rods, and auxiliary stabilizing rods connecting the four main columns and eight auxiliary columns. The steel frame structure evenly bears the weight of various equipment above, ensuring the safety of the cleaning chamber, induced draft fan, pulse cleaning system, and granulation tower above the truss.

[0037] Preferably, end fixing rods are fixedly connected to both sides of the main column, and the end of the end fixing rod away from the main column is fixedly connected to the corresponding auxiliary column. By adopting this preferred solution, the main column and two auxiliary columns can be fixedly connected as a whole by adding end fixing rods, thereby improving the overall stability.

[0038] Preferably, Z-shaped frames are fixedly connected to both sides of the central crossbar. The sides of the two Z-shaped frames that are closer to each other are fixedly connected to the same matching rod, while the sides of the two Z-shaped frames that are farther from each other are fixedly connected to the side crossbar and the amplitude rod, respectively. By adding two Z-shaped frames, the main truss and the auxiliary trusses on both sides are fixed together, making the main truss and auxiliary trusses further integrated into a single unit, allowing the stress to be distributed among them.

[0039] Preferably, a main positioning plate is fixedly connected to the lower end of the column, and an auxiliary positioning plate is fixedly connected to the lower end of the auxiliary column. The auxiliary positioning plate and the main positioning plate are fixedly connected to the upper surface of the tower body. A limiting frame is fixedly connected to the upper surface of the tower body. The upper surface of the limiting frame has four main embedding slots, each corresponding to one of the main positioning plates. The upper surface of the limiting frame has eight auxiliary embedding slots, each corresponding to one of the auxiliary positioning plates. With this preferred design, when the columns are fixed to the top of the tower body, the limiting frame and the main and auxiliary embedding slots on it can provide guidance, making the position of each main and auxiliary column more precise. Furthermore, the main and auxiliary positioning plates can increase the contact area between the main and auxiliary columns and the upper surface of the tower body, making the fixation more stable.

[0040] Preferably, the lower surface of the matching rod is provided with an auxiliary structure, the auxiliary structure including an auxiliary component and a stabilizing component. The auxiliary component includes a sliding groove, which is formed on the lower surface of the auxiliary rod. A sliding block is slidably connected to the inner wall of the sliding groove. Several anti-slip protrusions are fixedly connected to the bottom wall of the sliding groove, and the anti-slip protrusions abut against the sliding block. An auxiliary groove is formed on the side of the auxiliary column near the auxiliary rod. A sliding plate is slidably connected to the inner wall of the auxiliary groove. Several damping plates are fixedly connected to the bottom wall of the auxiliary groove, and the damping plates abut against the sliding plates. A support plate is fixedly connected to both the sliding plates and the sliding block. By adopting this preferred solution, when the steel frame structure above the tower has been used for too long and deforms, the auxiliary structure can support it. However, since the sliding block can slide in the sliding groove, the support plate will have a certain buffer space for supporting the upper support structure. In addition, the friction between the anti-slip protrusion and the sliding block will reduce the impact force to a certain extent, preventing the support plate from breaking suddenly under stress. By setting up the auxiliary structure, an extra layer of protection can be added to the support structure, effectively avoiding the risk of various equipment falling down due to deformation caused by aging of the support structure after long-term use, thus avoiding unnecessary losses.

[0041] Preferably, the stabilizing component includes a first limiting rod, the two ends of which are fixedly connected to the inner wall of the sliding groove, the arc surface of the first limiting rod is slidably connected to the sliding block, and a second limiting rod is fixedly connected to both sides of the inner wall of the auxiliary groove, the second limiting rod being slidably connected to the sliding plate.

[0042] By adopting this preferred solution, the addition of a first limiting rod and a second limiting rod can limit the sliding block and the sliding plate, preventing them from falling off when they slide violently.

[0043] Preferably, a first spring is fitted onto the arc surface of the first limiting rod, and the first spring is located on the side of the sliding block away from the auxiliary column. A second spring is fitted onto the arc surface of the second limiting rod, and the second spring is located on the side of the sliding plate away from the auxiliary rod. By adopting this preferred embodiment, the addition of the first and second springs can generate compressive forces in the sliding directions of the sliding block and the sliding plate, respectively, further reducing the impact force.

[0044] Preferably, the upper surface of the limiting frame is provided with a lifting structure, which includes a lifting assembly and a levering assembly. The lifting assembly includes four lifting frames, which are evenly fixed on the upper surface of the limiting frame. A pulley is rotatably connected to the end of each lifting frame away from the limiting frame. A lifting rope is slidably connected to the arc surface of the pulley. The arc surface of the lifting rope sequentially slides through an auxiliary block and a lifting plate. The lifting plate is fixedly connected to the lower surface of an auxiliary rod. The end of the lifting rope away from the lifting frame is connected to the auxiliary rod. The lifting rope is fixedly connected to the lifting plate, with a positioning ring fixedly connected to the end of the lifting rope away from the lifting plate. A positioning rod is rotatably connected to the inner wall of the positioning ring. The arc surface of the lifting frame has a shaped hole, and the positioning rod is threadedly connected to the inner wall of the shaped hole. The force-assisting component includes two pull rods, which are fixedly connected to the arc surface of the lifting ring. The two pull rods are located on both sides of the positioning ring. Two handles are fixedly connected to the end of the positioning rod away from the lifting frame, and the two handles are located on both sides of the positioning rod. With this preferred solution, after the support structure is assembled, the bottom of the connection between the lifting plate and the two auxiliary rods can be fixed. Then, the lifting rope and positioning ring can be pulled downwards by the pull rods. Then, the positioning rod can be rotated by the handles to make the positioning rod threadedly connected to the shaped hole on the lifting frame, thereby fixing the lifting rope. By setting up the lifting structure, the lifting rope can be pulled down to different depths for fixing as needed. The tension is used to fix the connection between the two auxiliary rods of the support structure, making the force more even.

[0045] Preferably, the curved surface of the grip is covered with a grip sleeve, which is a rubber sleeve. This preferred embodiment, by adding a rubber grip sleeve, increases the friction on the grip surface, thus providing an anti-slip effect.

[0046] Preferably, a U-shaped plate is fixedly connected to the arc surface of the lifting frame, and the inner wall of the U-shaped plate is slidably connected to the lifting rope. With this preferred embodiment, the addition of the U-shaped plate can limit the movement of the lifting rope, ensuring that the lifting rope remains in front of the irregular hole even when not fixed.

[0047] The following explanation is provided in conjunction with the accompanying drawings, such as... Figures 1-10The truss structure shown is used for a granulation tower exhaust gas purification system. It is installed on the tower body 1. The upper surface of the tower body 1 is provided with a support structure 2, the lower surface of the rod 214 is provided with an auxiliary structure 3, and the upper surface of the limiting frame 224 is provided with a lifting structure 4.

[0048] The specific setup and function of its supporting structure 2, auxiliary structure 3, and lifting structure 4 will be discussed below.

[0049] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the support structure 2 includes a support assembly 21 and a reinforcement assembly 22. The support assembly 21 includes four main columns 211, arranged in pairs. The lower end of each pair of main columns 211 is fixedly connected to the tower body 1, and the upper end of each pair of main columns 211 is fixedly connected to a central crossbar 213. Each pair of main columns 211 is also fixedly connected to a connecting rod 214, which is located below the central crossbar 213. Each pair of main columns 211 and the central crossbar 213 together form a main truss, which are interconnected in a cross shape. Several main stabilizing rods 217 are fixedly connected to the side of the rods 214 and the crossbars that are close to each other. Eight auxiliary columns 212 are fixedly connected to the upper surface of the tower body 1. The eight auxiliary columns 212 are arranged in pairs. The upper end of each pair of auxiliary columns 212 is fixedly connected to a side crossbar 215. Each pair of auxiliary columns 212 is fixedly connected to an auxiliary rod 216. Each pair of auxiliary columns 212 and auxiliary rods 216 together form an auxiliary truss. There is an auxiliary truss on each side of the main truss. Several main stabilizing rods 217 are fixedly connected to the side of the side crossbars 215 and the auxiliary rods 216 that are close to each other. Auxiliary stabilizing rods 218; four auxiliary trusses are arranged in pairs, with each pair of auxiliary trusses interlocking. End fixing rods 219 are fixedly connected to both sides of the main column 211. The end of each end fixing rod 219, furthest from the main column 211, is fixedly connected to the corresponding auxiliary column 212. Z-shaped frames 221 are fixedly connected to both sides of the central crossbar 213. The sides of two Z-shaped frames 221 closest to each other are fixedly connected to the same matching rod 214, while the sides of two Z-shaped frames furthest from each other are fixedly connected to the side crossbars 215 and the amplitude rod, respectively. The lower end of the column is fixedly connected to a main positioning plate 222, and the lower end of the auxiliary column 212 is fixedly connected to an auxiliary positioning plate 223. The auxiliary positioning plate 223 and the main positioning plate 222 are fixedly connected to the upper surface of the tower body 1. The upper surface of the tower body 1 is fixedly connected to a limit frame 224. The upper surface of the limit frame 224 is provided with four main embedding slots 225, and the positions of the four main embedding slots 225 are respectively corresponding to the main positioning plate 222. The upper surface of the limit frame 224 is provided with eight auxiliary embedding slots 226, and the positions of the eight embedding slots are respectively corresponding to the auxiliary positioning plate 223.

[0050] The overall effect of the support structure 2 is that, by setting up the support structure 2, the force on the truss above can be evenly distributed through the central crossbar 213, matching bar 214, side crossbar 215, auxiliary bar 216, main stabilizer bar 217 and auxiliary stabilizer bar 218 connected between the four main columns 211 and eight auxiliary columns 212. The steel frame structure can evenly bear the weight of various equipment above, ensuring the safety of the clean room, induced draft fan, pulse cleaning system and granulation tower above the truss.

[0051] like Figure 5 , Figure 6 , Figure 7 As shown, the auxiliary structure 3 includes an auxiliary component 31 and a stabilizing component 32. The auxiliary component 31 includes a sliding groove 311, which is formed on the lower surface of the auxiliary rod 216. A sliding block 312 is slidably connected to the inner wall of the sliding groove 311. Several anti-slip protrusions 313 are fixedly connected to the bottom wall of the sliding groove 311, and the anti-slip protrusions 313 abut against the sliding block 312. An auxiliary groove 314 is formed on the side of the auxiliary column 212 near the auxiliary rod 216. A sliding plate 315 is slidably connected to the inner wall of the auxiliary groove 314. Several damping plates 316 are fixedly connected to the bottom wall of the auxiliary groove 314, and the damping plates 316 abut against the sliding plates 315. The sliding plates 315 and the sliding block 312 work together... A support plate 317 is fixedly connected. The stabilizing component 32 includes a first limiting rod 321. The two ends of the first limiting rod 321 are fixedly connected to the inner wall of the sliding groove 311. The arc surface of the first limiting rod 321 is slidably connected to the sliding block 312. The inner walls of the auxiliary groove 314 are fixedly connected to a second limiting rod 333. The second limiting rod 333 is slidably connected to the sliding plate 315. The arc surface of the first limiting rod 321 is fitted with a first spring 322. The first spring 322 is located on the side of the sliding block 312 away from the auxiliary column 212. The arc surface of the second limiting rod 333 is fitted with a second spring 334. The second spring 334 is located on the side of the sliding plate 315 away from the auxiliary rod 216.

[0052] The overall effect of the auxiliary structure 3 is that by setting the auxiliary structure 3, an additional layer of protection can be added to the support structure 2, effectively avoiding the risk of various equipment falling due to deformation caused by the aging of the support structure 2 over time, thus preventing unnecessary losses.

[0053] like Figure 2 , Figure 8 , Figure 9 and Figure 10As shown, the lifting structure 4 includes a lifting assembly 41 and a levering assembly 42. The lifting assembly 41 includes four lifting frames 411, which are evenly fixed on the upper surface of the limiting frame 224. A pulley 412 is rotatably connected to the end of each lifting frame 411 away from the limiting frame 224. A lifting rope 413 is slidably connected to the arc surface of the pulley. The arc surface of the lifting rope 413 slides through an auxiliary block 414 and a lifting plate 415. The lifting plate 415 is fixedly connected to the lower surface of the auxiliary rod 216. The end of the lifting rope 413 away from the lifting frame is fixedly connected to the auxiliary block 414. A positioning ring 416 is fixedly connected to the end of the lifting rope 413 away from the lifting plate 415. The inner end of the positioning ring 416... The wall is rotatably connected to a positioning rod 417. The arc surface of the lifting frame has a shaped hole 418. The positioning rod 417 is threadedly connected to the inner wall of the shaped hole 418. The lever component 42 includes two pull rods 421. The two pull rods 421 are fixedly connected to the arc surface of the lifting ring. The two pull rods 421 are located on both sides of the positioning ring 416. The end of the positioning rod 417 away from the lifting frame is fixedly connected to two handles 422. The two handles 422 are located on both sides of the positioning rod 417. The arc surface of the handles 422 is covered with a grip sleeve 423, which is a rubber sleeve. The arc surface of the lifting frame is fixedly connected to a U-shaped plate 424. The inner wall of the U-shaped plate 424 is slidably connected to the lifting rope 413.

[0054] The effect achieved by the entire lifting structure 4 is that, by setting the lifting structure 4, the lifting rope 413 can be pulled down to different depths and fixed according to the needs, and the connection of the two auxiliary rods 216 of the support structure 2 can be fixed by the tension, so that the force is more even.

[0055] The overall working principle is as follows: before assembling the support structure 2 above the tower body 1, the limiting frame 224 can be welded to the top of the tower body 1. Then, the four columns and eight auxiliary columns 212 are fixed in sequence into the corresponding main embedding slots 225 and auxiliary embedding slots 226. Then, the corresponding central crossbar 213, matching rod 214, side crossbar 215, auxiliary rod 216, main stabilizing rod 217 and auxiliary stabilizing rod 218 are welded together in sequence. By setting the support structure 2, the force above the truss can be evenly distributed through the central crossbar 213, matching rod 214, side crossbar 215, auxiliary rod 216, main stabilizing rod 217 and auxiliary stabilizing rod 218 connected between the four main columns 211 and the eight auxiliary columns 212. The weight of various equipment above is evenly borne by the steel frame structure, ensuring the safety of the cleaning room, induced draft fan, pulse cleaning system and other devices and granulation tower above the truss.

[0056] Then, two Z-shaped frames are welded to fix the main truss and the auxiliary trusses on both sides together, so that the main truss and the auxiliary trusses become a whole and the force can be shared between them. Welding the end fixing rods 219 can fix one main column 211 and two auxiliary columns 212 into a whole, thereby improving the overall stability. By setting the reinforcement components 22, the overall load-bearing capacity and stability of the support structure 2 can be further improved.

[0057] When the steel frame structure above tower 1 deforms due to prolonged use, the auxiliary structure 3 can provide support. However, since the sliding block 312 can slide within the sliding groove 311, the support plate 317 provides a certain buffer space for supporting the upper support structure 2. During this process, the friction between the anti-slip protrusion 313 and the sliding block 312 reduces the impact force, preventing the support plate 317 from suddenly breaking under stress. The first limiting rod 321 and the second limiting rod 333 can limit the sliding block 312 and the sliding plate 315, preventing them from falling off when sliding violently. The first spring 322 and the second spring 334 can generate compressive force in the sliding direction of the sliding block 312 and the sliding plate 315, further reducing the impact force. By setting up the auxiliary structure 3, an additional layer of protection can be added to the support structure 2, effectively avoiding the risk of various equipment falling due to deformation caused by aging of the support structure 2 over a long period of use, thus preventing unnecessary losses.

[0058] After the support structure 2 is assembled, the bottom of the connection between the lifting plate 415 and the two auxiliary rods 216 can be fixed. Then, the lifting rope 413 and the positioning ring 416 can be pulled down by the pull rod 421. Then, the positioning rod 417 can be rotated by the handle 422 so that the positioning rod 417 is threadedly connected to the irregular hole 418 on the lifting frame, thereby fixing the lifting rope 413. The U-shaped plate 424 can limit the lifting rope 413 so that the lifting rope 413 is still in front of the irregular hole 418 even when it is not fixed. By setting the lifting structure 4, the lifting rope 413 can be pulled down to different depths and fixed as needed. The connection between the two auxiliary rods 216 of the support structure 2 can be fixed by the pulling force, so that the force is more even.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A truss structure for a granulation tower tail gas purification system, characterized in that: The steel frame structure of the granulation tower exhaust gas purification device evenly bears the weight of the equipment above the purification device body, including the cleanroom, induced draft fan, and pulse cleaning system, as well as the weight of the purification device itself, ensuring the safety of the granulation tower exhaust gas purification device and the granulation tower. The steel frame structure of the granulation tower exhaust gas purification device adopts a grid-shaped truss structure, usually at least 3 x 3 trusses, which can be increased or decreased according to the actual situation.

2. The truss structure for a granulation tower tail gas purification system according to claim 1, characterized in that: Each upper and lower chord is reinforced with tubing, profiles, and sheet metal.

3. A truss structure for a granulation tower tail gas purification system according to claim 2, characterized in that: The steel frame structure of the granulation tower exhaust gas purification device further includes longitudinal trusses and transverse trusses. Both longitudinal and transverse trusses are supported on the granulation tower body by columns. The longitudinal truss includes end reinforcing ribs at the ends, which are fixedly connected to the columns near the edge of the purification device body. The transverse truss also includes end reinforcing ribs at the ends, which are fixedly connected to the columns near the edge of the purification device body.

4. A truss structure for a granulation tower tail gas purification system according to claim 3, characterized in that: The support positions of the columns are determined based on the condition of the granulation tower body and the tail gas purification device of the granulation tower, and the columns are reinforced with diagonal braces.

5. A truss structure for a granulation tower tail gas purification system according to claim 1, characterized in that: The supporting or connecting components between each upper and lower chord are installed using welding or bolt fasteners.

6. A truss structure for a granulation tower tail gas purification system according to claim 3, characterized in that: The longitudinal truss adopts a structure of 3-7 main beams arranged in parallel, with multiple transversely fixed support beams between the main beams; the transverse beams near the end stiffeners of the longitudinal truss have a tensile strength 2-5 times greater than other transverse beams; the transverse truss adopts a structure of 3-7 main beams arranged in parallel, with multiple transversely fixed support beams between the main beams; the transverse beams near the end stiffeners of the transverse truss have a tensile strength 2-5 times greater than other transverse beams.

7. A truss structure for a granulation tower tail gas purification system according to claim 4, characterized in that: Based on the main beam structure and the columns near the edge of the purification unit body in the longitudinal truss, the end stiffeners near the longitudinal truss are bent polygons; based on the main beam structure and the columns near the edge of the purification unit body in the transverse truss, the end stiffeners near the transverse truss are bent polygons.

8. A truss structure for a granulation tower tail gas purification system according to claim 4, characterized in that: The columns are made of pipes, profiles, and plates, and are connected and supported to the horizontal or vertical trusses through movable connecting parts.

9. A truss structure for a granulation tower tail gas purification system according to claim 7, characterized in that: In each transverse or longitudinal truss, diagonal bracing is used for reinforcement, and the angle between the diagonal bracing and the vertical direction of the column is no greater than 45°; or, the transverse or longitudinal truss is a multi-layered transverse or longitudinal truss, that is, multiple transverse or longitudinal trusses are stacked together to form the steel frame structure of the granulation tower tail gas purification device.

10. A truss structure for a granulation tower tail gas purification system according to claim 1, characterized in that: The truss structure for the granulation tower tail gas purification system is installed on the tower body (1). A support structure (2) is provided on the upper surface of the tower body (1). The support structure (2) includes a support assembly (21) and a reinforcement assembly (22). The support assembly (21) includes four main columns (211). The four main columns (211) are arranged in pairs. The lower end of each pair of main columns (211) is fixedly connected to the tower body (1). The upper end of each pair of main columns (211) is fixedly connected to a central crossbar (213). Each pair of main columns (211) is fixedly connected to a matching rod (214). The matching rod (214) is located below the central crossbar (213). Each pair of main columns (211) and the central crossbar (213) together form the main truss. The main trusses are interconnected. The characters are intersected and connected. The matching rod (214) and the crossbar are fixedly connected to several main stabilizing rods (217) on the side close to each other. The upper surface of the tower body (1) is fixedly connected to eight auxiliary columns (212). The eight auxiliary columns (212) are in pairs. The upper end of each pair of auxiliary columns (212) is fixedly connected to a side crossbar (215). Each pair of auxiliary columns (212) is fixedly connected to an auxiliary rod (216). Each pair of auxiliary columns (212) and auxiliary rods (216) together form an auxiliary truss. There is an auxiliary truss on each side of the main truss. The side crossbars (215) and auxiliary rods (216) are fixedly connected to several auxiliary stabilizing rods (218) on the side close to each other. The four auxiliary trusses are in pairs. Each pair of auxiliary trusses is intersected and connected to each other.

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