A gas collecting box applied to a prilling tower

Abstract

The application provides a gas collecting box applied to a prilling tower, belongs to the technical field of urea prilling tail gas purification, is installed at the top of a prilling tower tail gas purification system body, a pulse valve is installed at the upper portion of the gas collecting box, a connecting pipe is installed at the bottom of the gas collecting box, the connecting pipe is connected with a blowing pipe of the prilling tower tail gas purification system, the gas collecting box is arranged in a single row, two rows or multiple rows, and is installed at the outer side or the middle portion of the prilling tower tail gas purification system body, and the structure type of the gas collecting box is circular, rectangular or the like. The application has the advantages of convenient installation, unrestricted routine maintenance and improved gas collecting efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of urea prilling tail gas purification, and particularly relates to a gas collecting tank applied to a prilling tower. BACKGROUND

[0002] At present, urea is mainly used as agricultural fertilizer, and is basically in the form of particles on the market. Urea prilling mainly uses two methods. One is tower prilling, that is, molten urea is sprayed in a prilling tower by using a rotating prilling nozzle installed at the top of the prilling tower, and cold air entering the bottom of the tower cools the descending urea particles, which are then collected at the bottom and packaged for sale. The other is mechanical prilling (for example, drum prilling, fluidized bed prilling, etc.), that is, urea is atomized and sprayed on seed crystals, so that the seed crystals grow continuously, and the particles reach a size of millimeters, and are then discharged from a device for packaging and sale.

[0003] The existing urea prilling tower uses natural ventilation. The urea prilling tower sprays urea melt material through a prilling nozzle, and the urea prilling tower forms urea particle products by natural ventilation cooling. The flow rate of air in the tower not only affects the settling speed of particles, but also affects the amount of urea dust discharged from the prilling tower. Due to chemical reaction processes, nozzle spraying, and abnormal operation states, etc., the top of the prilling tower discharges a considerable amount of dust, mainly CO(NH2)2, which has a very serious loss value and environmental pollution.

[0004] There are two types of dry and wet methods for urea prilling tower top dust recovery technology. The traditional wet dust removal technology is to install a water washing jet atomization device at the top of the urea prilling tower to absorb or adsorb urea dust particles with water-based substances, but it has an insurmountable technical defect, that is, a large amount of urea dust particles escape from the top of the urea prilling tower and overflow into the atmosphere, forming a "smoke" pollutant, causing secondary pollution to the surrounding environment. The dry dust recovery technology is a major technical breakthrough based on the breakthrough of the technical prejudice that "dry bag dust removal cannot be applied to urea prilling devices". The dry dust recovery technology is to install a dust recovery device at the top of the urea prilling tower, which realizes almost zero emission of urea dust recovery, and is a historic innovative technology.

[0005] Currently, urea producers are abandoning their original wet dust removal technology and opting for dry dust recovery technology. However, the tail gas treatment devices used in urea granulation towers for dry dust recovery technology still have the following technical problems: High-tower granulation tail gas purification devices require periodic pulse cleaning of the filter components. However, most currently use pulse valves, which necessitates a device to supply compressed air to meet the air volume required for the pulse valves to operate alternately within a short period. During prolonged use, the pulse valves on the gas collection box are susceptible to damage due to external environmental factors. Furthermore, the arrangement of existing filter components is severely limited by the need to reserve space for maintenance access at the top of the purification device and the requirements of daily maintenance. Summary of the Invention

[0006] To address the problems existing in current technologies, this invention proposes a gas collection box for use in granulation towers. This invention offers advantages such as easy installation, unrestricted routine maintenance, and improved gas collection efficiency.

[0007] Based on the technical solution of this invention, a gas collection box for use in a granulation tower includes a gas collection box body, which is installed on top of the granulation tower tail gas purification system body. A pulse valve is installed on the upper part of the gas collection box, and a connecting pipe is installed on the bottom of the gas collection box. The connecting pipe is connected to the blow pipe of the granulation tower tail gas purification system. The gas collection box can be arranged in a single row, two rows, or multiple rows, and the installation position is on the outside or in the middle of the granulation tower tail gas purification system body.

[0008] Furthermore, the gas collection box has both circular and rectangular structural forms. Multiple nozzles are installed on the blowpipe of the granulation tower exhaust gas purification system, each nozzle corresponding to a dust collector filter bag in a filter assembly; a control valve for the gas collection box is installed on the side of the gas collection box.

[0009] Furthermore, the gas collecting box applied to the granulation tower includes a gas collecting box body, and the upper end of the gas collecting box body is provided with a protective device. The protective device is used to protect the solenoid head and cable of the pulse valve, and to prevent rainwater from entering and causing rust. The width of the gas collecting box body is 600 mm.

[0010] Preferably, the protective device includes a support rod and an upper cover. One end of the upper cover is hinged to a fixed support leg on one side of the gas collection box body. A single-track groove is provided on the upper cover. One end of the support rod is slidably supported by the single-track groove through a ring. The other end of the support rod is associated with a fulcrum located inside the gas collection box body. When the upper cover is opened, the other end of the support rod is supported on the fulcrum inside the gas collection box body through the ring, and the angle between the upper cover and the upper horizontal plane of the gas collection box body is not greater than 80°. The top of the upper cover is ridge-shaped.

[0011] Further, the gas collecting box applied to the prilling tower comprises a gas collecting box body, two pulse valves are arranged on the upper end surface of the gas collecting box body, a butt joint pipe is fixedly connected to one side wall of the gas collecting box body, two fixed pipes are fixedly connected to the bottom end surface of the gas collecting box body, a blowing pipe is arranged at the end of the fixed pipes away from the gas collecting box cup body, a plurality of spray heads are arranged on the arc surface bottom end of the blowing pipe, and the protection device comprises a protection frame and a limiting assembly.

[0012] Preferably, the bottom end of the protection frame is in abutment with the upper end surface of the gas collecting box body, two fixing frames are fixedly connected to each corner of the protection frame, the same fixing frame is rotatably connected to the inner wall of the fixing frame, the cross section of the fixing frame is in the shape of 'U', a fixing column is fixedly connected to the position corresponding to the fixing frame of the gas collecting box body, the four fixing columns are distributed in the shape of a rectangle, a fixing sleeve is fixedly connected to the arc surface end of the fixing frame, the fixing sleeve is a rubber sleeve, and a plurality of friction grooves are arranged on the surface of the fixing sleeve.

[0013] Preferably, two positioning plates are in abutment with the two sides of the protection frame, the bottom end of each positioning plate is fixedly connected to the surface of the gas collecting box body, a guide plate is fixedly connected to the upper end of each positioning plate, and the cross section of the guide plate is in the shape of an arc.

[0014] Preferably, the limiting assembly comprises a limiting block, the inner wall of the limiting block is sleeved on the arc surface of the fixing column, the two ends of the limiting block are in symmetrical bending structure, the bending structure of the limiting block is in the shape of an inverted triangle, a first spring is fixedly connected to the bottom end of the limiting block, the end of the first spring away from the limiting block is fixedly connected to the gas collecting box body, a limiting plate is fixedly connected to the position corresponding to the limiting block on the inner wall of the fixing frame, the two sides of the limiting plate are in the shape of a guide cone, and the size of the guide cone-shaped limiting plate is matched with the size of the inverted triangle-shaped limiting block.

[0015] Preferably, the arc surface of the fixed pipe is provided with an adjusting device, the adjusting device comprises a fixing ring, the inner wall of the fixing ring is fixedly connected to the arc surface of the fixed pipe, three positioning frames are uniformly fixedly connected to the arc surface of the fixing ring, a rotating plate is rotatably connected to the inner wall of each positioning frame, a positioning frame is fixedly connected to the inner wall of the rotating plate, the size of the positioning frame is matched with the size of the blowing pipe and the fixed pipe, a sliding ring is slidably connected to the arc surface of the blowing pipe, a positioning ring is rotatably connected to the end of the sliding ring close to the positioning frame, a threaded groove is arranged on the surface of the positioning frame, and the inner wall of the positioning ring is threadedly connected with the threaded groove.

[0016] Preferably, the inner wall of the positioning frame is sleeved with a coil spring, both ends of the coil spring are fixedly connected with the positioning frame, and the arc surface of the coil spring is slidably connected with the inner wall of the rotating plate.

[0017] Preferably, the arc surface of the blowing pipe is provided with an auxiliary device at the position corresponding to the nozzle, the auxiliary device comprises two rotating rings, the inner walls of the two rotating rings are rotatably connected with the arc surface of the blowing pipe, the bottom ends of the two rotating rings are fixedly connected with limiting rods, the arc surface of the two limiting rods is slidably connected with the same extrusion plate, the extrusion plate is fixedly connected with a top block at the position corresponding to the nozzle, the arc surface of the top block is sleeved with a sealing ring, the arc surface of the top block is connected with the inner wall of the nozzle in an interference fit, the arc surface of the limiting rod is fixedly connected with a connecting ring, the arc surface of the limiting rod is sleeved with a second spring, and both ends of the second spring are fixedly connected with the connecting ring and the extrusion plate respectively.

[0018] Preferably, the arc surface of the blowing pipe is provided with a rotating assembly at the position corresponding to the rotating ring, the rotating assembly comprises a linking ring, the inner wall of the linking ring is rotatably connected with the arc surface of the blowing pipe, the surface of the linking ring is provided with a sliding groove, the bottom end of the sliding groove abuts against a limiting column, the inner wall of the limiting column is slidably connected with the arc surface of the limiting rod, the surface of the limiting column is fixedly connected with a third spring, and one end of the third spring away from the limiting column is fixedly connected with the rotating ring.

[0019] Preferably, the sliding groove is divided into a sliding end and a convex cavity end, the cross section of the sliding end is in a semicircular arc shape, the inner wall of the convex cavity end is in a U shape, and the joint between the sliding end and the convex cavity end is chamfered.

[0020] Compared with the prior art, the application has the advantages and positive effects that,

[0021] 1、In the application, when the pulse valve needs to be provided with compressed air and meet the gas amount required for the pulse valve to rotate in turn in a short time when the filter assembly of the high tower granulation tail gas purification device needs to be periodically pulsed, the entire pulse valve needs to be protected by the protection device when the pulse valve is operated and used, thereby facilitating long-term use of the entire pulse valve.

[0022] 2. In this invention, the protective device limits and fixes the position of the protective frame on the gas collecting box body. The fixed frame, with its rotating corners, abuts against the fixed post on the gas collecting box body. When rotating the fixed frame, the rubber fixing sleeve on the frame allows for convenient use, effectively enabling the protective frame to quickly protect and limit the pulse valve. To quickly guide the abutment position of the protective frame, a positioning plate and guide plate on the gas collecting box body provide auxiliary limiting, facilitating convenient and secure positioning of the protective frame. To better fix and limit the position of the protective frame, a limiting block fitted on the fixing post is used. When the fixed frame is rotated, the limiting block is first rotated by the tension of the first spring, which facilitates the contact between the limiting plate on the fixed frame and the fixing post. Then, the limiting block is rotated to the position corresponding to the limiting plate, so that the limiting block and the limiting plate are inserted and limited. Since the inner walls of the limiting plate and the limiting block are inverted triangular, the position of the entire fixed frame can be better fixed when the fixed frame is stretched and moved, effectively compressing and limiting the position of the entire protective frame.

[0023] 3. In this invention, the fixing and limiting of the connection between the fixed pipe and the blow pipe is achieved through the adjustment device, which helps to prevent the pipes from breaking and separating after long-term use. At this time, the fixed ring of the fixed pipe is used to move the rotating plate on the fixed ring. The positioning frame on the rotating plate then provides abutment protection at the connection between the fixed pipe and the blow pipe. The sliding ring on the blow pipe moves the positioning ring, allowing the inner wall of the positioning ring to be threadedly connected to the threaded groove on the positioning frame. This helps to fix and limit the position of the entire positioning frame, effectively limiting and protecting the entire blow pipe and the fixed ring. The torsional force generated by the coil spring can better squeeze and limit the position of the rotating plate. When the sliding ring slides, the slot on the rotating plate and the locking block on the sliding ring can effectively fix and limit the position of the sliding ring.

[0024] 4. In this invention, when cleaning the entire blowpipe by compressing air using the air collection box body through an auxiliary device, the nozzle needs to be blocked to better clean the inside of the blowpipe and nozzle, thereby increasing the pressure. At this time, the rotating ring on the blowpipe is used for limiting, and the top block on the extrusion plate sliding along the limiting rod is used to make an interference fit with the nozzle. The sealing ring on the top block can better seal the nozzle. The second spring on the limiting rod is used to better squeeze and limit the entire extrusion plate. After the entire nozzle and blowpipe are cleaned, in order to facilitate the rotation adjustment of the position of the rotating ring and the limiting rod, the connecting ring on the blowpipe is used to drive the position of the limiting post to move through the tension generated by the third spring on the limiting rod. The limiting post slides with the sliding groove opened on the connecting ring, thereby conveniently limiting the position of the entire rotating ring. The sliding end and the convex end on the sliding groove are used to better slide and limit the limiting post, thereby making the movement of the limiting post more convenient. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of a gas collection box applied to a granulation tower is provided for this invention.

[0026] Figure 2 This invention provides a schematic diagram of a protective device for a gas collection box used in a granulation tower.

[0027] Figure 3 This invention proposes a gas collection box for use in granulation towers. Figure 2 A magnified structural diagram at point A;

[0028] Figure 4 This invention provides a schematic diagram of the disassembled structure of a limiting component for a gas collecting box used in a granulation tower.

[0029] Figure 5 This invention provides a schematic diagram of the regulating device structure for a gas collection box applied to a granulation tower.

[0030] Figure 6 This invention provides a schematic diagram of the disassembled structure of an adjustment device for a gas collection box used in a granulation tower.

[0031] Figure 7 This invention provides a partially disassembled structural diagram of an adjustment device for a gas collection box used in a granulation tower.

[0032] Figure 8 This invention provides a partial structural schematic diagram of an auxiliary device for a gas collection box used in a granulation tower.

[0033] Figure 9To propose an auxiliary device dismounting structure schematic view of a gas collecting box applied to a prilling tower;

[0034] Figure 10 To propose a rotating assembly structure schematic view of a gas collecting box applied to a prilling tower;

[0035] Figure 11 To propose a rotating assembly partial structure schematic view of a gas collecting box applied to a prilling tower.

[0036] Legend: 1, gas collecting box body; 2, pulse valve; 3, butt joint pipe; 4, injection pipe; 5, spray head; 6, fixed pipe; 7, protection device; 701, protection frame; 702, fixing frame; 703, fixed frame; 704, fixed sleeve; 705, friction groove; 706, positioning plate; 707, fixed column; 708, guide plate; 710, limiting assembly; 7101, limiting block; 7102, first spring; 7103, limiting plate; 8, adjusting device; 801, fixed ring; 802, positioning frame; 803, coil spring; 804, rotating plate; 805, positioning frame; 806, clamping groove; 807, clamping block; 808, sliding ring; 809, positioning ring; 810, threaded groove; 9, auxiliary device; 91, rotating ring; 92, limiting rod; 93, extrusion plate; 94, top block; 95, sealing ring; 96, connecting ring; 97, second spring; 98, rotating assembly; 981, link ring; 982, sliding groove; 983, limiting column; 984, third spring. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above objectives, features and advantages of the present application, the following further describes the present application with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, and therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0039] The present application provides a gas collecting box applied to a prilling tower, which is installed at the top of a prilling tower tail gas purification system body, a pulse valve is installed at the upper part of the gas collecting box, a connecting pipe is installed at the bottom of the gas collecting box, and the connecting pipe is connected with an injection pipe of the prilling tower tail gas purification system. Further, the gas collecting box is arranged in a single row, two rows or multiple rows, and is installed at the outside or middle part of the prilling tower tail gas purification system body; the structure type of the gas collecting box includes a circular structure, a rectangular structure and the like. Preferably, a plurality of nozzles are arranged on the injection pipe of the prilling tower tail gas purification system, each nozzle corresponds to a dust removal filter bag in a filter assembly; a gas collecting box control valve is installed on the side of the gas collecting box.

[0040] Further, the gas collecting box applied to the prilling tower comprises a gas collecting box body, two pulse valves are arranged on the upper end surface of the gas collecting box body, a butt joint pipe is fixedly connected to one side wall of the gas collecting box body, two fixed pipes are fixedly connected to the bottom end surface of the gas collecting box body, a blowing pipe is arranged on the end of each fixed pipe away from the gas collecting box cup body, a plurality of spray heads are arranged on the arc surface bottom end of the blowing pipe, a protection device is arranged on the upper end of the gas collecting box body, and the protection device comprises a protection frame and a limiting assembly. The pulse valve preferably adopts a submerged pulse valve.

[0041] By adopting the technical scheme, when the filter assembly of the high-tower prilling tail gas purification device needs to be regularly cleaned by pulse, the pulse valve needs a device for providing compressed air, and the air volume required for the pulse valve to rotate in turn in a short time is met. When the pulse valve is operated and used, the entire pulse valve is protected by the protection device, thereby facilitating long-time use of the entire pulse valve.

[0042] Preferably, the bottom end of the protection frame is in abutment with the upper end surface of the gas collecting box body, two fixing frames are fixedly connected to each corner of the protection frame, the same fixing frame is rotatably connected to the inner wall of the fixing frame, the cross section of the fixing frame is in the shape of "U", a fixing column is fixedly connected to the position corresponding to the fixing frame of the gas collecting box body, the four fixing columns are distributed in a rectangular shape, a fixing sleeve is fixedly connected to the arc surface end of the fixing frame, the fixing sleeve is a rubber sleeve, and a plurality of friction grooves are formed in the surface of the fixing sleeve.

[0043] By adopting the technical scheme, the position of the protection frame on the gas collecting box body is limited and fixed. When the fixing frame at the four corners of the protection frame is rotated, the fixing frame is in abutment and limited with the fixing column on the gas collecting box body. When the position of the fixing frame is rotated, the fixing frame can be conveniently used through the rubber fixing sleeve on the fixing frame, and the protection frame can quickly protect and limit the pulse valve.

[0044] Preferably, two positioning plates are in abutment with the two sides of the protection frame, the bottom end of each positioning plate is fixedly connected to the surface of the gas collecting box body, a guide plate is fixedly connected to the upper end of each positioning plate, and the cross section of the guide plate is in the shape of an arc.

[0045] By adopting the preferred scheme, the abutment position of the protection frame is quickly guided. The positioning plate and the guide plate on the gas collecting box body are used for auxiliary limiting, thereby facilitating convenient fixing of the position of the protection frame.

[0046] Preferably, the limiting assembly comprises a limiting block, the inner wall of the limiting block is sleeved on the circular surface of the fixing column, the two ends of the limiting block are symmetrically bent, the bent structure of the limiting block is inverted triangular, the bottom end of the limiting block is fixedly connected with a first spring, the end of the first spring away from the limiting block is fixedly connected with the gas collecting box body, the inner wall of the fixed frame is fixedly connected with a limiting plate corresponding to the position of the limiting block, the two sides of the limiting plate are conical, and the size of the conical limiting plate is matched with the size of the inverted triangular limiting block.

[0047] By adopting the preferred scheme, the position of the protection frame is better fixed and limited, the limiting block sleeved on the fixing column is used, the limiting block is rotated by the pulling force of the first spring when the fixed frame is rotated, the limiting plate on the fixed frame is abutted with the fixing column, the limiting block is rotated to the position corresponding to the limiting plate, the limiting block is inserted and limited with the limiting plate, the position of the fixed frame is better fixed when the position of the fixed frame is stretched and moved, and the position of the protection frame is effectively extruded and limited.

[0048] Preferably, the circular surface of the fixed pipe is provided with an adjusting device, the adjusting device comprises a fixed ring, the inner wall of the fixed ring is fixedly connected with the circular surface of the fixed pipe, the circular surface of the fixed ring is uniformly fixedly connected with three positioning frames, the inner wall of each of the three positioning frames is rotatably connected with a rotating plate, the inner wall of each of the rotating plates is fixedly connected with a positioning frame, the size of the positioning frame is matched with the size of the blowing pipe and the fixed pipe, the circular surface of the blowing pipe is slidably connected with a sliding ring, one end of the sliding ring close to the positioning frame is rotatably connected with a positioning ring, a threaded groove is formed in the surface of the positioning frame, and the inner wall of the positioning ring is threadedly connected with the threaded groove.

[0049] By adopting the above technical scheme, the fixed pipe and the blowing pipe are fixed and limited at the butt joint, so that the pipes are prevented from being separated and broken after long time use, the rotating plate rotatably arranged on the fixed ring of the fixed pipe is moved in position, the positioning frame on the rotating plate is used to abut and protect the butt joint of the fixed pipe and the blowing pipe, the sliding ring on the blowing pipe is moved to drive the positioning ring to move, the inner wall of the positioning ring is threadedly connected with the threaded groove formed in the positioning frame, and the position of the positioning frame is fixed and limited, so that the blowing pipe and the fixed ring are effectively limited and protected.

[0050] Preferably, the inner wall of the positioning frame is sleeved with a coil spring, the two ends of the coil spring are fixedly connected with the positioning frame, and the circular surface of the coil spring is slidably connected with the inner wall of the rotating plate.

[0051] Adopting the preferred scheme, the torsional force generated by the coil spring can rotate the position of the plate for better extrusion limiting.

[0052] Preferably, the rotating plate is provided with a clamping groove at one end away from the fixed ring, the circular arc surface of the sliding ring is fixedly connected with a clamping block at the position corresponding to the clamping groove, and the inner wall of the clamping groove is clamped with the surface of the clamping block.

[0053] Adopting the preferred scheme, when the position of the sliding ring is sliding, the clamping groove on the rotating plate and the clamping block on the sliding ring can effectively fix and limit the position of the sliding ring.

[0054] Preferably, the circular arc surface of the blowing pipe is provided with an auxiliary device at the position corresponding to the nozzle, the auxiliary device comprises two rotating rings, the inner walls of the two rotating rings are rotatably connected with the circular arc surface of the blowing pipe, the bottom ends of the two rotating rings are fixedly connected with limiting rods, the circular arc surface of the two limiting rods is slidingly connected with the same extrusion plate, the extrusion plate is fixedly connected with a top block at the position corresponding to the nozzle, the circular arc surface of the top block is sleeved with a sealing ring, the circular arc surface of the top block is interference-connected with the inner wall of the nozzle, the circular arc surface of the limiting rod is fixedly connected with a connecting ring, the circular arc surface of the limiting rod is sleeved with a second spring, and the two ends of the second spring are fixedly connected with the connecting ring and the extrusion plate respectively.

[0055] By adopting the above technical scheme, when the gas collecting box body is used for air compression to clean the entire blowing pipe, the nozzle needs to be blocked for better cleaning of the inside of the blowing pipe and the nozzle, so as to increase the pressure, the rotating ring on the blowing pipe is used for limiting, the extrusion plate sliding along the limiting rod is used, the top block on the extrusion plate is interference-connected with the nozzle, the sealing ring on the top block can better seal the nozzle, and the second spring on the limiting rod is used for better extrusion limiting of the entire extrusion plate.

[0056] Preferably, the circular arc surface of the blowing pipe is provided with a rotating assembly at the position corresponding to the rotating ring, the rotating assembly comprises a linking ring, the inner wall of the linking ring is rotatably connected with the circular arc surface of the blowing pipe, the surface of the linking ring is provided with a sliding groove, the bottom end of the sliding groove abuts against a limiting column, the inner wall of the limiting column is slidingly connected with the circular arc surface of the limiting rod, the surface of the limiting column is fixedly connected with a third spring, and one end of the third spring away from the limiting column is fixedly connected with the rotating ring.

[0057] By adopting this preferred solution, after cleaning the entire nozzle and blowpipe, in order to facilitate the rotation adjustment of the position of the rotating ring and the limiting rod, the connecting ring on the blowpipe, through the tension generated by the third spring on the limiting rod, drives the position of the limiting post to move, allowing the limiting post to slide with the sliding groove opened on the connecting ring, thereby conveniently limiting the position of the entire rotating ring.

[0058] Preferably, the sliding groove is divided into a sliding end and a convex cavity end. The cross-section of the sliding end is semi-circular, the inner wall of the convex cavity end is U-shaped, and the joint between the sliding end and the convex cavity end is rounded.

[0059] By adopting this preferred solution, the sliding end and the convex cavity end on the sliding groove are used to better slide and limit the limiting post, thereby making the movement of the limiting post more convenient.

[0060] The following provides a further description of the specific structure of a gas collection box applied to a granulation tower provided by the present invention:

[0061] like Figures 1-11 As shown in Embodiment 1, a gas collecting box for use in a granulation tower according to the present invention includes a gas collecting box body 1. Two pulse valves 2 are provided on the upper surface of the gas collecting box body 1. A connecting pipe 3 is fixedly connected to one side wall of the gas collecting box body 1. Two fixed pipes 6 are fixedly connected to the bottom surface of the gas collecting box body 1. A blow pipe 4 is provided at the end of each fixed pipe 6 away from the gas collecting box body. Several nozzles 5 are provided at the bottom of the arc surface of the blow pipe 4. A protective device 7 is provided at the upper end of the gas collecting box body 1. An adjustment device 8 is provided on the arc surface of the fixed pipe 6. An auxiliary device 9 is provided on the arc surface of the blow pipe 4 corresponding to the position of the nozzle 5.

[0062] The specific settings and functions of its protective device 7, adjusting device 8, and auxiliary device 9 will be described in detail below.

[0063] like Figure 2 , Figure 3 and Figure 4As shown, the protection device 7 comprises a protection frame 701 and a limiting assembly 710. The bottom end of the protection frame 701 abuts against the upper end surface of the gas collecting box body 1. Two fixed frames 702 are fixedly connected to each corner of the protection frame 701. The inner wall of the fixed frame 702 is rotatably connected to the same fixed frame 703. The cross section of the fixed frame 703 is in the shape of "U". The fixed columns 707 are fixedly connected to the positions corresponding to the fixed frame 703 of the gas collecting box body 1. The four fixed columns 707 are distributed in a rectangular shape. The fixed sleeve 704 is fixedly connected to the arc surface end of the fixed frame 703. The fixed sleeve 704 is a rubber sleeve. A plurality of friction grooves 705 are formed on the surface of the fixed sleeve 704. Two positioning plates 706 are arranged on the two sides of the protection frame 701. The bottom end of the two positioning plates 706 is fixedly connected to the surface of the gas collecting box body 1. The upper end of the two positioning plates 706 is fixedly connected to the guide plate 708. The cross section of the guide plate 708 is in the shape of arc. The limiting assembly 710 comprises a limiting block 7101. The inner wall of the limiting block 7101 is sleeved on the arc surface of the fixed column 707. The two ends of the limiting block 7101 are in symmetrical bending structure. The bending structure of the limiting block 7101 is in the shape of inverted triangle. The bottom end of the limiting block 7101 is fixedly connected to the first spring 7102. The end of the first spring 7102 away from the limiting block 7101 is fixedly connected to the gas collecting box body 1. The limiting plate 7103 is fixedly connected to the position corresponding to the limiting block 7101 of the inner wall of the fixed frame 703. The two sides of the limiting plate 7103 are in the shape of guide cone. The size of the guide cone-shaped limiting plate 7103 is matched with the size of the inverted triangle-shaped limiting block 7101.

[0064] The effect of the whole protection device 7 is that the fixed frame 703 rotating on the four corners of the protection frame 701 is limited, and then the fixed frame 703 abuts against the fixed column 707 on the gas collecting box body 1. When the position of the fixed frame 703 is rotated, the fixed frame 703 can be conveniently used through the fixed sleeve 704 made of rubber on the fixed frame 703, so that the protection and limiting of the pulse valve 2 by the protection frame 701 can be quickly achieved.

[0065] As shown in the drawings, Figure 5 , Figure 6 and Figure 7As shown, the adjusting device 8 comprises a fixed ring 801, the inner wall of the fixed ring 801 is fixedly connected with the arc surface of the fixed pipe 6, the arc surface of the fixed ring 801 is uniformly fixedly connected with three positioning frames 802, the inner wall of each of the three positioning frames 802 is rotationally connected with a rotating plate 804, the inner wall of each of the rotating plates 804 is fixedly connected with a positioning frame 805, the size of the positioning frame 805 is matched with the size of the blowing pipe 4 and the fixed pipe 6, the arc surface of the blowing pipe 4 is slidingly connected with a sliding ring 808, one end of the sliding ring 808 close to the positioning frame 805 is rotationally connected with a positioning ring 809, the surface of the positioning frame 805 is provided with a threaded groove 810, the inner wall of the positioning ring 809 is threadedly connected with the threaded groove 810, the positioning frame 802 is sleeved with a coil spring 803, both ends of the coil spring 803 are fixedly connected with the positioning frame 802, the arc surface of the coil spring 803 is slidingly connected with the inner wall of the rotating plate 804, one end of the rotating plate 804 away from the fixed ring 801 is provided with a clamping groove 806, the arc surface of the sliding ring 808 is fixedly connected with a clamping block 807 corresponding to the position of the clamping groove 806, and the inner wall of the clamping groove 806 is clamped with the surface of the clamping block 807.

[0066] The adjusting device 8 achieves the effect that the fixed ring 801 is fixed on the fixed pipe 6, the rotating plate 804 rotating on the fixed ring 801 is moved, and the positioning frame 805 on the rotating plate 804 is used to abut and protect the joint between the fixed pipe 6 and the blowing pipe 4.

[0067] As Figure 8 , Figure 9 and Figure 10As shown, the auxiliary device 9 includes two rotating rings 91, the inner walls of the two rotating rings 91 are rotatably connected with the arc surface of the blowing pipe 4, the bottom ends of the two rotating rings 91 are fixedly connected with limiting rods 92, the arc surface of the two limiting rods 92 is slidingly connected with the same extrusion plate 93, the extrusion plate 93 is fixedly connected with a top block 94 corresponding to the position of the nozzle 5, the arc surface of the top block 94 is sleeved with a sealing ring 95, the arc surface of the top block 94 is interference connected with the inner wall of the nozzle 5, the arc surfaces of the limiting rods 92 are fixedly connected with connecting rings 96, the arc surfaces of the limiting rods 92 are sleeved with second springs 97, the two ends of the second springs 97 are fixedly connected with the connecting rings 96 and the extrusion plate 93 respectively, the blowing pipe 4 is provided with a rotating assembly 98 corresponding to the position of the rotating ring 91, the rotating assembly 98 includes a connecting ring 981, the inner wall of the connecting ring 981 is rotatably connected with the arc surface of the blowing pipe 4, a sliding groove 982 is formed in the surface of the connecting ring 981, the bottom end of the sliding groove 982 abuts against a limiting column 983, the inner wall of the limiting column 983 is slidingly connected with the arc surface of the limiting rod 92, the surface of the limiting column 983 is fixedly connected with a third spring 984, one end of the third spring 984 away from the limiting column 983 is fixedly connected with the rotating ring 91, the sliding groove 982 is divided into a sliding end and a convex cavity end, the cross section of the sliding end is semicircular, the inner wall of the convex cavity end is "U" shaped, and the joint between the sliding end and the convex cavity end is chamfered.

[0068] The effect of the whole auxiliary device 9 is that the rotating ring 91 on the blowing pipe 4 is used for limiting, then the extrusion plate 93 sliding along the limiting rod 92 is used, the top block 94 on the extrusion plate 93 is interference connected with the nozzle 5, the sealing ring 95 on the top block 94 can better seal the nozzle 5, and the second spring 97 on the limiting rod 92 is used for better extruding and limiting the whole extrusion plate 93.

[0069] On the basis of example 1, example 2 is further improved, and the overall working principle of example 2 is that when the filter assembly of the high tower granulation tail gas purification device needs to be periodically pulsed, the pulse valve 2 needs a device to provide compressed air, and the air volume required for the pulse valve 2 to act alternately in a short time is met, at this time, when the pulse valve 2 is operated and used, the whole pulse valve 2 is protected by the protection device 7, thereby facilitating the long-term use of the whole pulse valve 2.

[0070] The position of the protective frame 701 on the gas collecting box body 1 is limited and fixed, at this time, the fixed frame 703 rotating around the four corners of the protective frame 701 abuts against the fixed column 707 on the gas collecting box body 1 to limit the position of the fixed frame 703, when the position of the fixed frame 703 is rotated, the fixed frame 703 can be conveniently used through the fixed sleeve 704 of rubber material on the fixed frame 703, effectively allowing the protective frame 701 to quickly protect and limit the pulse valve 2, in order to quickly guide the abutting position of the protective frame 701, at this time, the positioning plate 706 and the guide plate 708 on the gas collecting box body 1 are used to assist in limiting the position of the protective frame 701, which is convenient for fixing the position of the protective frame 701, in order to better fix the position of the protective frame 701, at this time, the limiting block 7101 on the fixed column 707 is used, when the fixed frame 703 is rotated, the limiting block 7101 is first rotated by the tension of the first spring 7102, so that the limiting plate 7103 on the fixed frame 703 abuts against the fixed column 707, then the limiting block 7101 is rotated to the position corresponding to the limiting plate 7103, so that the limiting block 7101 and the limiting plate 7103 are inserted and limited, since the inner walls of the limiting plate 7103 and the limiting block 7101 are inverted triangular, when the position of the fixed frame 703 is stretched and moved, the position of the entire fixed frame 703 can be better fixed, and the position of the entire protective frame 701 can be effectively extruded and limited.

[0071] The fixed pipe 6 and the blowing pipe 4 are connected and limited, so as to avoid the separation and rupture of the pipes after long-term use, at this time, the rotating plate 804 rotating on the fixed ring 801 on the fixed pipe 6 is moved, the positioning frame 805 on the rotating plate 804 abuts against the connection position of the fixed pipe 6 and the blowing pipe 4 for protection, the positioning ring 809 is moved by the sliding ring 808 on the blowing pipe 4, the inner wall of the positioning ring 809 is threadedly connected with the threaded groove 810 on the positioning frame 805, so as to fix and limit the position of the entire positioning frame 805, effectively limiting and protecting the entire blowing pipe 4 and the fixed ring 801, the position of the rotating plate 804 can be better extruded and limited by the torsional force of the coil spring 803, when the position of the sliding ring 808 is slid, the clamping groove 806 on the rotating plate 804 and the clamping block 807 on the sliding ring 808 can effectively fix and limit the position of the sliding ring 808.

[0072] When the air compression is carried out by the gas collecting box body 1 to clean the whole blowing pipe 4, in order to better clean the inside of the blowing pipe 4 and the nozzle 5, the nozzle 5 needs to be blocked at the moment, so as to increase the pressure, the rotating ring 91 on the blowing pipe 4 is used for limiting, the extrusion plate 93 sliding along the limiting rod 92 is used, the top block 94 on the extrusion plate 93 is in interference connection with the nozzle 5, the sealing ring 95 on the top block 94 can better seal the nozzle 5, the second spring 97 on the limiting rod 92 is used for better extruding and limiting the whole extrusion plate 93, after the nozzle 5 and the blowing pipe 4 are cleaned, in order to conveniently rotate and adjust the position of the rotating ring 91 and the limiting rod 92, the connecting ring 981 on the blowing pipe 4 is used, the pulling force generated by the third spring 984 on the limiting rod 92 is used, so as to drive the movement of the limiting column 983, the sliding groove 982 is opened in the connecting ring 981, the sliding groove 982 is used for sliding, so as to conveniently rotate and limit the position of the rotating ring 91, the sliding end and the convex cavity end on the sliding groove 982 are used for better sliding limiting of the limiting column 983, so that the movement of the limiting column 983 is more convenient.

[0073] The above is only the preferred embodiment of the present application, and does not limit the present application in other forms. Any person skilled in the art can change or modify the above disclosed technical content into equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments still belongs to the protection scope of the present application technical solution.

Claims

1. A gas collecting box for use in a granulation tower, comprising a gas collecting box body (1), characterized in that: The upper surface of the gas collection box body (1) is provided with two submerged pulse valves (2), one end of the side wall of the gas collection box body (1) is fixedly connected with a connecting pipe (3), the bottom surface of the gas collection box body (1) is fixedly connected with two fixed pipes (6), and the two fixed pipes (6) are provided with a blow pipe (4) at the end away from the gas collection box body. The bottom of the arc surface of the blow pipe (4) is provided with several nozzles (5). The upper end of the gas collection box body (1) is provided with a protective device (7), which includes a protective frame (701) and a limiting component (710). The arc surface of the blow pipe (4) is provided with an auxiliary device (9) corresponding to the position of the nozzle (5). The auxiliary device (9) includes two rotating rings (91). The inner walls of the two rotating rings (91) are rotatably connected to the arc surface of the blow pipe (4). The bottom ends of the two rotating rings (91) are fixedly connected to limit rods (92). The arc surfaces of the two limit rods (92) are slidably connected to the same extrusion plate (93). The extrusion plate (93) is fixedly connected to a top block (94) corresponding to the position of the nozzle (5). The arc surface of the top block (94) is fitted with a sealing ring (95). The arc surface of the top block (94) is interference-fitted with the inner wall of the nozzle (5). The arc surfaces of the limit rods (92) are fixedly connected to a connecting ring (96). The arc surfaces of the limit rods (92) are fitted with a second spring (97). The two ends of the second spring (97) are fixedly connected to the connecting ring (96) and the extrusion plate (93) respectively.

2. A header for use in a prilling tower according to claim 1, characterized in that: The bottom end of the protective frame (701) abuts against the upper surface of the gas collection box body (1). Two fixing brackets (702) are fixedly connected to the four corners of the protective frame (701). The inner wall of the fixing bracket (702) is rotatably connected to the same fixing frame (703). The cross section of the fixing frame (703) is "U". The gas collection box body (1) is fixedly connected to the fixing column (707) at the position corresponding to the fixing frame (703). The four fixing columns (707) are distributed in a rectangular shape. The arc end of the fixing frame (703) is fixedly connected to the fixing sleeve (704). The fixing sleeve (704) is a rubber sleeve. Several friction grooves (705) are opened on the surface of the fixing sleeve (704).

3. A header for use in a prilling tower according to claim 2, characterized in that: The protective frame (701) has two positioning plates (706) on both sides. The bottom ends of the two positioning plates (706) are fixedly connected to the surface of the gas collection box body (1). The upper ends of the two positioning plates (706) are fixedly connected to guide plates (708). The cross-section of the guide plates (708) is arc-shaped.

4. A header for use in a prilling tower according to claim 2, characterized in that: The limiting component (710) includes a limiting block (7101). The inner wall of the limiting block (7101) is fitted onto the arc surface of the fixing column (707). The two ends of the limiting block (7101) are symmetrically bent. The bent structure of the limiting block (7101) is in the shape of an inverted triangle. A first spring (7102) is fixedly connected to the bottom end of the limiting block (7101). The end of the first spring (7102) away from the limiting block (7101) is fixedly connected to the air collection box body (1). A limiting plate (7103) is fixedly connected to the inner wall of the fixing frame (703) at the position corresponding to the limiting block (7101). The two sides of the limiting plate (7103) are in the shape of guide cones. The size of the guide cone-shaped limiting plate (7103) is adapted to the size of the inverted triangle-shaped limiting block (7101).

5. A header for use in a prilling tower according to claim 1, characterized in that: The arc surface of the fixed tube (6) is provided with an adjustment device (8). The adjustment device (8) includes a fixed ring (801). The inner wall of the fixed ring (801) is fixedly connected to the arc surface of the fixed tube (6). Three positioning frames (802) are evenly fixedly connected to the arc surface of the fixed ring (801). The inner walls of the three positioning frames (802) are rotatably connected to a rotating plate (804). The inner walls of the rotating plate (804) are fixedly connected to a positioning frame (805). The size of the positioning frame (805) is adapted to the size of the blow pipe (4) and the fixed tube (6). The arc surface of the blow pipe (4) is slidably connected to a sliding ring (808). The end of the sliding ring (808) near the positioning frame (805) is rotatably connected to a positioning ring (809). The surface of the positioning frame (805) is provided with a threaded groove (810). The inner wall of the positioning ring (809) is threadedly connected to the threaded groove (810).

6. A header for use in a prilling tower according to claim 5, characterized in that: The inner wall of the positioning frame (802) is fitted with a coil spring (803), both ends of which are fixedly connected to the positioning frame (802), and the arc surface of the coil spring (803) is slidably connected to the inner wall of the rotating plate (804).

7. A gas collection box for use in a granulation tower according to claim 5, characterized in that: The rotating plate (804) has a slot (806) at one end away from the fixed ring (801). The arc surface of the sliding ring (808) is fixedly connected to a block (807) at the position corresponding to the slot (806). The inner wall of the slot (806) is engaged with the surface of the block (807).

8. A gas collection box for use in a granulation tower according to claim 1, characterized in that: The arc surface of the blow pipe (4) is provided with a rotating component (98) corresponding to the position of the rotating ring (91). The rotating component (98) includes a connecting ring (981). The inner wall of the connecting ring (981) is rotatably connected to the arc surface of the blow pipe (4). A sliding groove (982) is provided on the surface of the connecting ring (981). The bottom end of the sliding groove (982) abuts against a limiting post (983). The inner wall of the limiting post (983) is slidably connected to the arc surface of the limiting rod (92). A third spring (984) is fixedly connected to the surface of the limiting post (983). The end of the third spring (984) away from the limiting post (983) is fixedly connected to the rotating ring (91).

9. A gas collection box for use in a granulation tower according to claim 8, characterized in that: The sliding groove (982) is divided into a sliding end and a convex cavity end. The cross-section of the sliding end is semi-circular, the inner wall of the convex cavity end is "U" shaped, and the joint between the sliding end and the convex cavity end is rounded.

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