Tail gas treatment device and method for phosphoric acid processing

Abstract

The invention relates to the technical field of phosphoric acid processing tail gas treatment, and provides a phosphoric acid processing tail gas treatment device and method.The phosphoric acid processing tail gas treatment device comprises a separator body, an inner wall scraping plate, a sliding connection ring body, an assembly frame body, an outer installation frame, an installation rod, an extrusion block, a sliding connection rod, a positioning insertion rod and a connecting part; and the inner wall scraping plate is inserted into the inner side of the first assembly hole. According to the inner wall scraping plate separator, the outer mounting frame is arranged to be rotationally connected with the mounting rod from the middle of the mounting rod, so that the extrusion block can be matched with the positioning insertion rod to form a warping plate structure, and synchronous adjustment treatment on the inner wall scraping plate and the positioning insertion rod is facilitated; the inner wall scraping plate and the assembling frame body are connected through the connecting part, then the sliding connection ring body is adjusted to rotate, scraping treatment of impurities on the inner wall of the separator body can be completed, the separator body does not need to be disassembled for cleaning, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of phosphoric acid processing tail gas treatment, and in particular to a tail gas treatment device and method for phosphoric acid processing. Background Art

[0002] The phosphoric acid production process produces tail gas containing pollutants such as fluoride, sulfide, and dust. Therefore, the tail gas must be purified during the phosphoric acid processing process. The tail gas treatment process includes a pretreatment unit, an absorption purification unit, and a demisting unit. The tail gas pretreatment unit includes a cyclone separator.

[0003] The cyclone separator is a conical structure with a tangential air intake design. The exhaust pipe is located in the middle of the cyclone separator, inserted approximately one-third of the way into the separator body. The cyclone separator separates large particles from the exhaust gas by generating centrifugal force through the formation of a strong three-dimensional rotating flow. An ash hopper is located at the bottom of the cyclone separator to collect the particles.

[0004] However, when a conventional cyclone separator is performing particle separation, a large amount of impurities will adhere to the side walls of the cyclone separator. A large amount of impurities adhered to the side walls of the cyclone separator will hinder the exhaust gas from forming a rotating flow at the side walls of the cyclone separator, thereby increasing the pressure drop. Therefore, it is necessary to regularly clean the impurities adhered to the side walls of the cyclone separator. The design of the conventional cyclone separator is not convenient for cleaning the impurities adhered to the side walls of the cyclone separator. The cyclone separator needs to be disassembled and then the attached impurities need to be cleaned. Disassembling and cleaning the cyclone separator is time-consuming and labor-intensive. Therefore, this solution specifically proposes an exhaust gas treatment device and method for phosphoric acid processing to solve the above problems. Summary of the Invention

[0005] In view of this, the present invention proposes an exhaust gas treatment device and method for phosphoric acid processing, which is used to solve the technical problem that the design of conventional cyclone separators is inconvenient to clean impurities attached to the side walls of the cyclone separators, and the cyclone separators need to be disassembled before cleaning the attached impurities, which is time-consuming and labor-intensive to disassemble and clean.

[0006] The technical solution of the present invention is achieved as follows: The present invention provides a tail gas treatment device for phosphoric acid processing, comprising a separator body, an inner wall scraper, a sliding ring body, an assembly frame body, an installation outer frame, a mounting rod, an extrusion block, a sliding rod, a positioning rod and a connecting component, wherein:

[0007] A first assembly hole is opened on one side of the separator body, and the inner wall scraper is inserted into the inner side of the first assembly hole, and the end of the inner wall scraper is aligned with the inner wall of the separator body;

[0008] A sliding ring platform is provided on the peripheral wall of the separator body, the sliding ring platform is communicated with the inner cavity of the separator body, and the sliding ring body is rotatably provided on the inner side of the sliding ring platform, and the assembly frame is provided on the sliding ring body, and the end of the sliding ring body is aligned with the inner wall scraper during the sliding stroke of the inner wall scraper;

[0009] An external mounting frame is provided on the outside of the separator body, and the mounting rod is rotatably provided on the external mounting frame;

[0010] An extrusion block is provided at one end of the mounting rod and abuts against the inner wall scraper. A sliding rod is slidably connected to the other end of the mounting rod and slides in the extension direction of the mounting rod.

[0011] A positioning rod is rotatably arranged at the end of the sliding rod and is located on one side of the sliding ring platform. A positioning slot is provided on the sliding ring body. The positioning rod passes through the sliding ring platform and is inserted into the positioning slot.

[0012] A connecting component is provided on the assembly frame body, and when the inner wall scraper slides to be located inside the separator body, the connecting component connects the assembly frame body and the inner wall scraper.

[0013] On the basis of the above technical solution, preferably, it further comprises a sealing cover, wherein,

[0014] The sealing cover is arranged on the outside of the separator body and is located at the first assembly hole. When the inner wall scraper slides to the inside of the sealing cover, the end of the inner wall scraper is sealed and fitted with the sealing cover.

[0015] On the basis of the above technical solution, preferably, the connecting component includes a connecting block, a spring and a connecting rope, wherein,

[0016] The end of the assembly frame body is provided with a mounting groove, and the connecting card block is slidably connected to the inside of the mounting groove and extends out of the mounting groove, the side surface of the connecting card block close to the side wall of the separator body is an inclined surface, a limit plate is provided on the side wall of the assembly frame body, and a sliding groove for inserting the connecting card block and the limit plate is provided on the inner wall scraper, and a connecting card groove for plugging the connecting card block is provided inside the sliding groove, and the limit plate is used to limit the assembly frame body from separating from the inner wall scraper from the top of the inner wall scraper;

[0017] a spring, disposed between the connecting block and the mounting slot, for resetting the sliding position of the connecting block;

[0018] A connecting rope is connected to the connecting block, and an end of the connecting rope extends out of the assembly frame.

[0019] On the basis of the above technical solution, preferably, mutually connected threading holes are provided between the assembly frame body and the sliding ring body, the threading holes are connected to the installation groove, the connecting rope passes through the threading holes, and the sliding ring platform is provided with a first connecting hole which is opposite to the threading hole on the sliding ring body.

[0020] On the basis of the above technical solution, preferably, a connecting plate is further included, wherein,

[0021] The sliding ring body is provided with a connecting groove connected to the threading hole, the connecting plate is slidably connected to the inside of the connecting groove, and a pull ring is rotatably connected to a side of the connecting plate close to the first connecting hole.

[0022] On the basis of the above technical solution, preferably, it further includes a driving motor and a driving gear, wherein,

[0023] The driving motor is arranged on the sliding ring platform, and the driving gear is fixedly connected to the output shaft of the driving motor. The sliding ring platform is provided with a second connecting hole for the driving gear to pass through. The sliding ring body is provided with a driving tooth groove, and the driving gear is inserted into the driving tooth groove and engages with the driving tooth groove.

[0024] On the basis of the above technical solution, preferably, it further comprises a positioning assembly for locating the rotation position of the mounting rod, the positioning assembly comprising a screw rod and a locking gear, wherein,

[0025] A rectangular block is provided on the outer side of the mounting rod, a second assembly hole is provided on the mounting outer frame, and the rectangular block is rotatably connected to the inner side of the second assembly hole;

[0026] A sliding hole is provided inside the second assembly hole, and the locking gear is slidably connected to the inside of the sliding hole. A locking tooth groove is provided on the square block and is opposite to the locking gear. When the locking gear slides, the locking gear is inserted into the locking tooth groove and meshes with the locking tooth groove.

[0027] The screw rod is threadedly connected to the mounting outer frame and is rotationally connected to the locking gear.

[0028] On the basis of the above technical solution, preferably, it further includes a sieve plate and an air guide plate, wherein,

[0029] The separator body is connected to an air inlet pipe and an exhaust pipe, the air inlet pipe is used to supply exhaust gas to the separator body, and the exhaust pipe is used to discharge the gas in the separator body;

[0030] a plurality of sieve plates, arranged inside the exhaust pipe and distributed in the extension direction of the exhaust pipe, the sieve plates being used to filter particles in the exhaust pipe;

[0031] A plurality of air guide plates are arranged inside the exhaust pipe and at the end of the exhaust pipe, and are distributed equidistantly in the circumferential direction.

[0032] On the basis of the above technical solution, preferably, it further includes a purge gas inlet pipe, a purge gas outlet pipe and an exhaust pipe, wherein,

[0033] The exhaust pipe is rotatably connected to the separator body, and the exhaust pipe is fixedly connected to the assembly frame;

[0034] The purge gas inlet pipe and the purge gas outlet pipe are both arranged inside the separator body and located on one side of the exhaust pipe, and the bottom of the purge gas inlet pipe is open;

[0035] A plurality of purge branch pipes are connected between the purge gas inlet pipe and the exhaust pipe, and the plurality of purge branch pipes are respectively connected to the bottom of the plurality of sieve plates to blow gas toward the sieve plates. A plurality of exhaust branch pipes are connected between the purge gas outlet pipe and the exhaust pipe, and the plurality of exhaust branch pipes are respectively positioned opposite to the plurality of purge branch pipes.

[0036] The gas outlet pipe is connected to the purge gas outlet pipe and is used to discharge gas in the direction of the gas flow in the separator body.

[0037] The present invention also provides a method for treating tail gas from phosphoric acid processing, which is accomplished by the above-mentioned tail gas treatment device for phosphoric acid processing and further includes the following steps:

[0038] S1. When it is necessary to scrape impurities on the inner wall of the separator body, adjust the mounting rod to rotate along the mounting outer frame, so that the sliding rod drives the positioning rod to slide away from the sliding ring body, and the extrusion block squeezes the inner wall scraper into the separator body;

[0039] S2, until the positioning rod is completely separated from the positioning slot, at which time the inner wall scraper slides to the inside of the separator body and is connected to the assembly frame through the connecting component;

[0040] S3, regulating the sliding ring body to rotate along the sliding ring platform to complete the scraping process of impurities on the inner wall of the separator body;

[0041] S4. Adjust the sliding ring body to rotate to reset, and adjust the installation rod to rotate so that the positioning rod is fully inserted into the positioning slot. At this time, the inner wall scraper slides outward along the first assembly hole, and the extrusion block blocks and positions the inner wall scraper from one side of the inner wall scraper, and the inner wall scraper is reset.

[0042] The tail gas treatment device and method for phosphoric acid processing of the present invention have the following beneficial effects compared with the prior art:

[0043] (1) The tail gas treatment device for phosphoric acid processing of the present invention is connected to the mounting rod by rotating the mounting rod from the middle of the mounting rod by setting an external mounting frame, so that the extrusion block can cooperate with the positioning rod to form a seesaw structure. In this way, when the positioning rod is inserted into the sliding ring body, the extrusion block can block and position the inner wall scraper from the side away from the separator body, so that the separator body can be used normally. When it is necessary to scrape impurities on the inner wall of the separator body, it is only necessary to adjust the positioning rod to slide in the direction away from the sliding ring body, so that the extrusion block can squeeze the inner wall scraper in the direction close to the separator body, thereby completing the locking and disengagement of the sliding ring body and the synchronous movement of the inner wall scraper. After the inner wall scraper is moved to the inside of the separator body, the inner wall scraper and the assembly frame are connected by the connecting component, and then the sliding ring body is adjusted to rotate to complete the scraping of impurities on the inner wall of the separator body. There is no need to disassemble the separator body for cleaning, which is convenient to use. (2) The inner wall scraper is connected by setting a connecting block, and the side wall of the connecting block close to the inner wall scraper is an inclined surface. In this way, when the inner wall scraper is adjusted to move toward the inside of the separator body, the connecting block can be inserted into the inside of the sliding groove by compressing the spring, and the limit plate is simultaneously inserted into the inside of the sliding groove. The connecting block and the limit plate slide along the sliding groove synchronously. After the inner wall scraper is completely moved to the inside of the separator body, the connecting block is inserted and clamped into the inside of the connecting groove under the action of the spring. Since the other side of the connecting block is a plane, the connection between the inner wall scraper and the assembly frame is completed under the action of the connecting block, which facilitates the assembly frame to automatically connect to the inner wall scraper and carry the inner wall scraper to rotate on the inner wall of the separator body, which is convenient for use.

[0044] (3) By providing the mounting rod to drive the moment block to rotate synchronously, when it is necessary to locate the rotational position of the mounting rod, the screw rod can be rotated. At this time, the screw rod pushes the locking gear to slide along the sliding hole under the action of the thread, inserts and engages inside the locking tooth groove, thereby completing the positioning of the rotational position of the mounting rod by fixing the moment block. By providing the moment block on the outer wall of the mounting rod, a locking tooth groove for the locking gear to be inserted is provided, which facilitates the positioning of the rotational position of the mounting rod by the locking gear, and is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1It is a front perspective view of the tail gas treatment device for phosphoric acid processing of the present invention;

[0047] Figure 2 A top perspective view of a tail gas treatment device for phosphoric acid processing according to the present invention;

[0048] Figure 3 It is a right side view of the tail gas treatment device for phosphoric acid processing of the present invention;

[0049] Figure 4 The tail gas treatment device for phosphoric acid processing of the present invention Figure 3 A cross-sectional view of the structure at AA is shown;

[0050] Figure 5 The tail gas treatment device for phosphoric acid processing of the present invention Figure 4 An enlarged schematic diagram of point B is shown;

[0051] Figure 6 It is a rear view of the tail gas treatment device for phosphoric acid processing of the present invention;

[0052] Figure 7 The tail gas treatment device for phosphoric acid processing of the present invention Figure 6 A cross-sectional view of the structure at CC is shown;

[0053] Figure 8 This is a schematic diagram of the internal structure of the separator body of the tail gas treatment device for phosphoric acid processing of the present invention;

[0054] Figure 9 The tail gas treatment device for phosphoric acid processing of the present invention Figure 8 a top perspective view of the structure shown;

[0055] Figure 10 This is a three-dimensional schematic diagram of the connection between the mounting frame and the rectangular block of the tail gas treatment device for phosphoric acid processing according to the present invention;

[0056] Figure 11 This is a cross-sectional schematic diagram of the connection between the mounting frame and the rectangular block of the tail gas treatment device for phosphoric acid processing according to the present invention;

[0057] Figure 12 This is a perspective view of the inner wall scraper of the exhaust gas treatment device for phosphoric acid processing according to the present invention.

[0058] In the figure: 1, separator body; 11, first assembly hole; 12, sliding ring platform; 121, first connecting hole; 122, second connecting hole; 13, air inlet pipe; 14, exhaust pipe; 21, inner wall scraper; 211, sliding groove; 212, connecting slot; 22, sealing cover; 31, sliding ring body; 311, positioning slot; 312, driving tooth groove; 313, connecting slot; 32, assembly frame; 321, mounting slot; 322, threading hole; 41, mounting outer frame; 411, second assembly hole; 412, sliding hole; 42, Mounting rod; 43. Extrusion block; 44. Sliding rod; 45. Positioning rod; 46. Rectangular block; 461. Locking tooth groove; 5. Connecting component; 51. Connecting block; 52. Spring; 53. Connecting rope; 54. Connecting plate; 55. Pull ring; 56. Limiting plate; 61. Driving motor; 62. Driving gear; 7. Positioning assembly; 71. Screw; 72. Locking gear; 81. Screen plate; 82. Air guide plate; 91. Purge air inlet pipe; 911. Purge branch pipe; 92. Purge air outlet pipe; 921. Exhaust branch pipe; 93. Exhaust pipe. DETAILED DESCRIPTION

[0059] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0060] like Figures 1 to 12As shown, the tail gas treatment device for phosphoric acid processing of the present invention includes a separator body 1, an inner wall scraper 21, a sliding ring body 31, an assembly frame body 32, an installation outer frame 41, a mounting rod 42, an extrusion block 43, a sliding rod 44, a positioning plug rod 45 and a connecting component 5, wherein a first assembly hole 11 is opened on one side of the separator body 1, and the inner wall scraper 21 is inserted into the inner side of the first assembly hole 11, and the end of the inner wall scraper 21 is aligned with the inner wall of the separator body 1; a sliding ring platform 12 is provided on the peripheral wall of the separator body 1, the sliding ring platform 12 is connected to the inner cavity of the separator body 1, and the sliding ring body 31 is rotatably arranged on the inner side of the sliding ring platform 12, and the assembly frame body 32 is arranged on the sliding ring body 31, and the end of the sliding ring body 31 is on the sliding of the inner wall scraper 21. It is aligned with the inner wall scraper 21 in terms of stroke; the mounting outer frame 41 is arranged on the outside of the separator body 1, and the mounting rod 42 is rotatably arranged on the mounting outer frame 41; the extrusion block 43 is arranged at one end of the mounting rod 42 and abuts against the inner wall scraper 21, and the sliding rod 44 is slidably connected to the other end of the mounting rod 42 and slides in the extension direction of the mounting rod 42; the positioning rod 45 is rotatably arranged at the end of the sliding rod 44 and is located on one side of the sliding ring platform 12, and a positioning slot 311 is provided on the sliding ring body 31, the positioning rod 45 passes through the sliding ring platform 12 and is inserted into the positioning slot 311; the connecting component 5 is arranged on the assembly frame body 32, and when the inner wall scraper 21 slides to the inside of the separator body 1, the connecting component 5 connects the assembly frame body 32 and the inner wall scraper 21.

[0061] In practice, the separator body 1 is cylindrical at the top and conical at the bottom. An air inlet pipe 13 is connected to one side of the top of the separator body 1, which draws air tangentially to the separator body 1. An exhaust pipe 14 is located in the middle of the top of the separator body 1. An inner wall scraper 21 is slidably connected to the conical portion of the separator body 1.

[0062] In a specific implementation, the sliding rod 44 is inserted into the inside of the mounting rod 42 and slides along the mounting rod 42. The side of the extrusion block 43 away from the mounting rod 42 is an arc surface. A rectangular outer block is provided on the outer side of the positioning rod 45, and the sliding rod 44 is hinged to the rectangular outer block. A ring rod is provided at the end of the positioning rod 45.

[0063] In a specific implementation, the inner wall scraper 21 is located outside the separator body 1 and covers the first assembly hole 11 , so as to enable the separator body 1 to normally perform particle separation processing in the exhaust gas. When it is necessary to scrape impurities on the inner wall of the separator body 1, the mounting rod 42 is regulated to rotate along the mounting outer frame 41, so that the sliding rod 44 drives the positioning rod 45 to slide in the direction away from the sliding ring body 31, and the extrusion block 43 squeezes the inner wall scraper 21 into the separator body 1 until the positioning rod 45 is completely disengaged from the positioning slot 311. At this time, the inner wall scraper 21 slides to the inside of the separator body 1 and is connected to the assembly frame body 32 through the connecting component 5. The sliding ring body 31 is regulated to rotate along the sliding ring platform 12 to complete the scraping of impurities on the inner wall of the separator body 1. The sliding ring body 31 is regulated to rotate to reset, and the mounting rod 42 is regulated to rotate so that the positioning rod 45 is fully inserted into the positioning slot 311. At this time, the inner wall scraper 21 slides outward along the first assembly hole 11, and the extrusion block 43 blocks and positions the inner wall scraper 21 from one side of the inner wall scraper 21, and the inner wall scraper 21 is reset.

[0064] By setting the mounting outer frame 41 to be rotatably connected to the mounting rod 42 from the middle of the mounting rod 42, the extrusion block 43 can cooperate with the positioning plug 45 to form a seesaw structure. In this way, when the positioning plug 45 is inserted into the sliding ring body 31, the extrusion block 43 can block and position the inner wall scraper 21 from the side away from the separator body 1, so that the separator body 1 can be used normally. When it is necessary to scrape impurities on the inner wall of the separator body 1, it is only necessary to adjust the positioning plug 45 to slide in the direction away from the sliding ring body 31, so that the extrusion block 43 can squeeze the inner wall scraper 21 in the direction close to the separator body 1, thereby completing the locking and disengagement of the sliding ring body 31 and the synchronous movement of the inner wall scraper 21. After the inner wall scraper 21 is moved to the inside of the separator body 1, the inner wall scraper 21 and the assembly frame 32 are connected by the connecting component 5, and then the sliding ring body 31 is adjusted to rotate, the scraping of impurities on the inner wall of the separator body 1 can be completed, and there is no need to disassemble the separator body 1 for cleaning, which is convenient for use.

[0065] As a preferred embodiment, it also includes a sealing cover 22, wherein the sealing cover 22 is arranged on the outside of the separator body 1 and is located at the first assembly hole 11. When the inner wall scraper 21 slides to the inside of the sealing cover 22, the end of the inner wall scraper 21 is sealed and fits with the sealing cover 22.

[0066] In the specific implementation, in order to enable the inner wall scraper 21 to slide smoothly into the interior of the first assembly hole 11 along the assembly frame 32 after completing the scraping of impurities on the inner wall of the separator body 1, the size of the first assembly hole 11 needs to be designed to be slightly larger than the size of the inner wall scraper 21, so that the sealing cover 22 is provided to realize the sealing treatment between the inner wall scraper 21 and the separator body 1.

[0067] The sealing cover 22 is provided to increase the sealing performance of the connection between the inner wall scraper 21 and the separator body 1 .

[0068] Preferably, a sealing block for sealingly fitting with the inner wall scraper 21 is provided at the end of the sealing cover 22 .

[0069] As a preferred embodiment, the connecting component 5 includes a connecting block 51, a spring 52 and a connecting rope 53, wherein the end of the assembly frame body 32 is provided with a mounting groove 321, and the connecting block 51 is slidably connected to the inside of the mounting groove 321 and extends out of the mounting groove 321, and the side of the connecting block 51 close to the side wall of the separator body 1 is an inclined surface, and a limiting plate 56 is provided on the side wall of the assembly frame body 32, and a sliding groove 211 for inserting the connecting block 51 and the limiting plate 56 is provided on the inner wall scraper 21, and a connecting groove 212 for plugging the connecting block 51 is provided inside the sliding groove 211, and the limiting plate 56 is used to limit the assembly frame body 32 from detaching from the inner wall scraper 21 from the top of the inner wall scraper 21; the spring 52 is provided between the connecting block 51 and the mounting groove 321, for resetting the sliding position of the connecting block 51; the connecting rope 53 is connected to the connecting block 51, and the end of the connecting rope 53 extends out of the assembly frame body 32.

[0070] The inner wall scraper 21 is connected by a connecting block 51, and the side wall of the connecting block 51 close to the inner wall scraper 21 is an inclined surface. In this way, when the inner wall scraper 21 is adjusted to move toward the interior of the separator body 1, the connecting block 51 can be inserted into the interior of the sliding groove 211 by the compression spring 52, and the limit plate 56 is simultaneously inserted into the interior of the sliding groove 211. The connecting block 51 and the limit plate 56 slide synchronously along the sliding groove 211. After the inner wall scraper 21 is completely moved to the interior of the separator body 1, the connecting block 51 is inserted and connected to the interior of the connecting groove 212 under the action of the spring 52. Since the other side of the connecting block 51 is a plane, the connection between the inner wall scraper 21 and the assembly frame 32 is completed under the action of the connecting block 51, which facilitates the assembly frame 32 to automatically connect to the inner wall scraper 21 and carry the inner wall scraper 21 to rotate on the inner wall of the separator body 1, which is convenient for use.

[0071] At the same time, by providing a connecting rope 53 connected to the connecting block 51 , it is convenient to pull the connecting rope 53 from multiple directions to adjust the connecting block 51 to slide out of the connecting slot 212 .

[0072] A threading hole 322 is provided between the assembly frame 32 and the sliding ring body 31 , and the threading hole 322 is connected to the installation groove 321 . The connecting rope 53 passes through the threading hole 322 . The sliding ring platform 12 is provided with a first connecting hole 121 which is opposite to the threading hole 322 on the sliding ring body 31 .

[0073] By providing a threading hole 322 for the connecting rope 53 to pass through, and providing a first connecting hole 121 on the sliding ring platform 12 that is opposite to the threading hole 322, the connecting rope 53 that passes through the threading hole 322 can pass through the sliding ring platform 12 through the first connecting hole 121, making it convenient to pull the connecting rope 53 from the outside of the separator body 1 to adjust the clamping state of the connecting block 51, which is convenient for use.

[0074] It also includes a connecting plate 54, wherein a connecting groove 313 connected to the threading hole 322 is opened on the sliding ring body 31, and the connecting plate 54 is slidably connected to the inside of the connecting groove 313. A pull ring 55 is rotatably connected to the side of the connecting plate 54 close to the first connecting hole 121.

[0075] In a specific implementation, the pull ring 55 is rotated inside the first connecting hole 121. When it is necessary to pull the connecting rope 53 to cancel the engagement of the connecting block 51, the pull ring 55 is rotated to be removed and pulled outward. At this time, the connecting plate 54 slides along the connecting groove 313, thereby completing the convenient pulling process of the connecting rope 53.

[0076] As a preferred embodiment, it also includes a drive motor 61 and a drive gear 62, wherein the drive motor 61 is arranged on the sliding ring platform 12, and the drive gear 62 is fixedly connected to the output shaft of the drive motor 61, and a second connecting hole 122 for the drive gear 62 to pass through is opened on the sliding ring platform 12, and a drive tooth groove 312 is opened on the sliding ring body 31, and the drive gear 62 is inserted into the drive tooth groove 312 and meshes with the drive tooth groove 312.

[0077] In a specific implementation, the drive tooth groove 312 is an annular tooth groove. Specifically, when the rotation of the sliding ring body 31 needs to be adjusted, the drive motor 61 is started, and the drive motor 61 drives the drive gear 62 to rotate. The drive gear 62 drives the sliding ring body 31 to rotate under the action of the drive tooth groove 312, thereby completing the automatic rotation adjustment process of the sliding ring body 31.

[0078] By setting up a drive motor 61 and a drive gear 62 to drive the sliding ring body 31 to rotate, the driving component can be located outside the separator body 1 to rotate the sliding ring body 31. Compared with direct drive shaft drive, the drive shaft located inside the separator body 1 may interfere with the gas flow in the separator body 1.

[0079] As a preferred embodiment, it also includes a positioning assembly 7 for positioning the rotational position of the mounting rod 42, the positioning assembly 7 includes a screw rod 71 and a locking gear 72, wherein a moment block 46 is provided on the outside of the mounting rod 42, a second assembly hole 411 is provided on the mounting outer frame 41, and the moment block 46 is rotatably connected to the inner side of the second assembly hole 411; a sliding hole 412 is provided inside the second assembly hole 411, and the locking gear 72 is slidably connected to the inside of the sliding hole 412, and a locking tooth groove 461 is provided on the moment block 46, which is opposite to the locking gear 72. When the locking gear 72 slides, the locking gear 72 is inserted into the locking tooth groove 461 and engages with the locking tooth groove 461; the screw rod 71 is threadedly connected to the mounting outer frame 41 and is rotatably connected to the locking gear 72.

[0080] In a specific implementation, the mounting rod 42 drives the moment block 46 to rotate synchronously.

[0081] In this way, when it is necessary to locate the rotational position of the mounting rod 42, the screw rod 71 is rotated. At this time, the screw rod 71 pushes the locking gear 72 to slide along the sliding hole 412 under the action of the thread, and is inserted into and engaged with the inside of the locking tooth groove 461, thereby completing the positioning of the rotational position of the mounting rod 42 through the fixed moment block 46.

[0082] By arranging the moment block 46 on the outer wall of the mounting rod 42, a locking tooth groove 461 is provided for the locking gear 72 to be inserted, so that the positioning of the rotation position of the mounting rod 42 can be completed conveniently through the locking gear 72, which is convenient for use.

[0083] As a preferred embodiment, it also includes a sieve plate 81 and an air guide plate 82, wherein the separator body 1 is connected to an air intake pipe 13 and an exhaust pipe 14, the air intake pipe 13 is used to supply exhaust gas to the separator body 1, and the exhaust pipe 14 is used to discharge the gas in the separator body 1; multiple sieve plates 81 are arranged inside the exhaust pipe 14 and distributed in the extension direction of the exhaust pipe 14, and the sieve plates 81 are used to filter particles in the exhaust pipe 14; multiple air guide plates 82 are arranged inside the exhaust pipe 14 and are located at the end of the exhaust pipe 14, and are distributed equidistantly in the circumferential direction.

[0084] It also includes a purge gas inlet pipe 91, a purge gas outlet pipe 92 and an air outlet pipe 93, wherein the exhaust pipe 14 is rotatably connected to the separator body 1, and the exhaust pipe 14 is fixedly connected to the assembly frame 32; the purge gas inlet pipe 91 and the purge gas outlet pipe 92 are both arranged inside the separator body 1, and are located on one side of the exhaust pipe 14, and the bottom of the purge gas inlet pipe 91 is open; a plurality of purge branch pipes 911 are connected between the purge gas inlet pipe 91 and the exhaust pipe 14, and the plurality of purge branch pipes 911 are respectively connected to the bottom of the plurality of sieve plates 81 to blow gas toward the sieve plates 81, and a plurality of exhaust branch pipes 921 are connected between the purge gas outlet pipe 92 and the exhaust pipe 14, and the plurality of exhaust branch pipes 921 are respectively positioned opposite to the plurality of purge branch pipes 911; the air outlet pipe 93 is connected to the purge gas outlet pipe 92, and is used to discharge gas in the direction of the airflow in the separator body 1.

[0085] The above embodiment is a preferred embodiment of the tail gas treatment device for phosphoric acid processing of the present application, and is also a matching extension solution of the assembly frame 32 and other structures.

[0086] In a specific implementation, multiple sieve plates 81 are provided inside the exhaust pipe 14. The design of the multiple sieve plates 81 can achieve multi-stage screening of particles in the gas flowing through the exhaust pipe 14, thereby increasing the screening effect of the exhaust gas treatment device for phosphoric acid processing on particles in the exhaust gas.

[0087] When the sieve plate 81 is screening particles, particles may adhere to the sieve plate 81. In order to increase the screening effect of the sieve plate 81, a purge gas inlet pipe 91 and a purge gas outlet pipe 92 are provided. By providing a bottom opening of the purge gas inlet pipe 91, in a specific implementation, the gas flowing back from the bottom of the separator body 1 will not only flow into the interior of the exhaust pipe 14, but also flow into the interior of the purge gas inlet pipe 91. The gas flowing into the purge gas inlet pipe 91 will be discharged from multiple purge branches 911, completing the purge process of the multiple sieve plates 81 to minimize the particles that may adhere to the sieve plates 81. At the same time, after the purge gas is purged, it is discharged from the outlet pipe 93 through the purge gas outlet pipe 92. By setting the outlet direction of the outlet pipe 93 to be consistent with the gas flow direction in the separator body 1, the gas discharged from the outlet pipe 93 is prevented from interfering with the flow of gas in the separator body 1.

[0088] By setting the exhaust pipe 14 to be rotatably connected to the separator body 1, and the exhaust pipe 14 to be fixedly connected to the assembly frame 32, the exhaust pipe 14 can rotate together with the assembly frame 32 to prevent the purge gas inlet pipe 91 and the purge gas outlet pipe 92 set on one side of the exhaust pipe 14 from hindering the rotation of the assembly frame 32, making it convenient to use.

[0089] The present invention also provides a method for treating tail gas from phosphoric acid processing, which is accomplished by the above-mentioned tail gas treatment device for phosphoric acid processing and further includes the following steps:

[0090] Step 1: When it is necessary to scrape impurities on the inner wall of the separator body 1, the mounting rod 42 is adjusted to rotate along the mounting outer frame 41, so that the sliding rod 44 drives the positioning rod 45 to slide away from the sliding ring body 31, and the squeezing block 43 squeezes the inner wall scraper 21 into the separator body 1;

[0091] Step 2: until the positioning rod 45 is completely separated from the positioning slot 311, at which time the inner wall scraper 21 slides to the inside of the separator body 1 and is connected to the assembly frame 32 through the connecting member 5;

[0092] Step 3: Adjust the sliding ring body 31 to rotate along the sliding ring platform 12 to complete the scraping process of impurities on the inner wall of the separator body 1;

[0093] Step 4: Adjust the sliding ring body 31 to rotate to reset, and adjust the installation rod 42 to rotate so that the positioning rod 45 is fully inserted into the positioning slot 311. At this time, the inner wall scraper 21 slides outward along the first assembly hole 11, and the extrusion block 43 blocks and positions the inner wall scraper 21 from one side of the inner wall scraper 21, and the inner wall scraper 21 is reset.

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tail gas treatment device for phosphoric acid processing, characterized in that: It includes a separator body, an inner wall scraper, a sliding ring body, an assembly frame body, an installation outer frame, a mounting rod, an extrusion block, a sliding rod, a positioning rod and a connecting component, wherein: A first assembly hole is opened on one side of the separator body, and the inner wall scraper is inserted into the inner side of the first assembly hole, and the end of the inner wall scraper is aligned with the inner wall of the separator body; A sliding ring platform is provided on the peripheral wall of the separator body, the sliding ring platform is communicated with the inner cavity of the separator body, and the sliding ring body is rotatably provided on the inner side of the sliding ring platform, and the assembly frame is provided on the sliding ring body, and the end of the sliding ring body is aligned with the inner wall scraper during the sliding stroke of the inner wall scraper; An external mounting frame is provided on the outside of the separator body, and the mounting rod is rotatably provided on the external mounting frame; An extrusion block is provided at one end of the mounting rod and abuts against the inner wall scraper. A sliding rod is slidably connected to the other end of the mounting rod and slides in the extension direction of the mounting rod. A positioning rod is rotatably arranged at the end of the sliding rod and is located on one side of the sliding ring platform. A positioning slot is provided on the sliding ring body. The positioning rod passes through the sliding ring platform and is inserted into the positioning slot. A connecting component is provided on the assembly frame body, and when the inner wall scraper slides to be located inside the separator body, the connecting component connects the assembly frame body and the inner wall scraper.

2. The tail gas treatment device for phosphoric acid processing according to claim 1, characterized in that: Also includes a sealing cover, wherein The sealing cover is arranged on the outside of the separator body and is located at the first assembly hole. When the inner wall scraper slides to the inside of the sealing cover, the end of the inner wall scraper is sealed and fitted with the sealing cover.

3. The tail gas treatment device for phosphoric acid processing according to claim 1, wherein: The connecting component includes a connecting block, a spring and a connecting rope, wherein: The end of the assembly frame body is provided with a mounting groove, and the connecting card block is slidably connected to the inside of the mounting groove and extends out of the mounting groove, the side surface of the connecting card block close to the side wall of the separator body is an inclined surface, a limit plate is provided on the side wall of the assembly frame body, and a sliding groove for inserting the connecting card block and the limit plate is provided on the inner wall scraper, and a connecting card groove for plugging the connecting card block is provided inside the sliding groove, and the limit plate is used to limit the assembly frame body from separating from the inner wall scraper from the top of the inner wall scraper; a spring, disposed between the connecting block and the mounting slot, for resetting the sliding position of the connecting block; A connecting rope is connected to the connecting block, and an end of the connecting rope extends out of the assembly frame.

4. The tail gas treatment device for phosphoric acid processing according to claim 3, wherein: A threading hole connected to each other is provided between the assembly frame and the sliding ring body. The threading hole is connected to the installation groove. The connecting rope passes through the threading hole. The sliding ring platform is provided with a first connecting hole corresponding to the threading hole on the sliding ring body.

5. The tail gas treatment device for phosphoric acid processing according to claim 4, characterized in that: Also included is a connecting plate, wherein The sliding ring body is provided with a connecting groove connected to the threading hole, the connecting plate is slidably connected to the inside of the connecting groove, and a pull ring is rotatably connected to a side of the connecting plate close to the first connecting hole.

6. The tail gas treatment device for phosphoric acid processing according to claim 1, wherein: Also includes a drive motor and a drive gear, wherein, The driving motor is arranged on the sliding ring platform, and the driving gear is fixedly connected to the output shaft of the driving motor. The sliding ring platform is provided with a second connecting hole for the driving gear to pass through. The sliding ring body is provided with a driving tooth groove, and the driving gear is inserted into the driving tooth groove and engages with the driving tooth groove.

7. The tail gas treatment device for phosphoric acid processing according to claim 1, wherein: It also includes a positioning assembly for positioning the rotation position of the mounting rod, the positioning assembly includes a screw rod and a locking gear, wherein, A rectangular block is provided on the outer side of the mounting rod, a second assembly hole is provided on the mounting outer frame, and the rectangular block is rotatably connected to the inner side of the second assembly hole; A sliding hole is provided inside the second assembly hole, and the locking gear is slidably connected to the inside of the sliding hole. A locking tooth groove is provided on the square block and is opposite to the locking gear. When the locking gear slides, the locking gear is inserted into the locking tooth groove and meshes with the locking tooth groove. The screw rod is threadedly connected to the mounting outer frame and is rotationally connected to the locking gear.

8. The tail gas treatment device for phosphoric acid processing according to claim 1, wherein: It also includes a screen plate and an air guide plate, wherein: The separator body is connected to an air inlet pipe and an exhaust pipe, the air inlet pipe is used to supply exhaust gas to the separator body, and the exhaust pipe is used to discharge the gas in the separator body; a plurality of sieve plates, arranged inside the exhaust pipe and distributed in the extension direction of the exhaust pipe, the sieve plates being used to filter particles in the exhaust pipe; A plurality of air guide plates are arranged inside the exhaust pipe and at the end of the exhaust pipe, and are distributed equidistantly in the circumferential direction.

9. The tail gas treatment device for phosphoric acid processing according to claim 8, characterized in that: It also includes a purge gas inlet pipe, a purge gas outlet pipe and an air outlet pipe, wherein: The exhaust pipe is rotatably connected to the separator body, and the exhaust pipe is fixedly connected to the assembly frame; The purge gas inlet pipe and the purge gas outlet pipe are both arranged inside the separator body and located on one side of the exhaust pipe, and the bottom of the purge gas inlet pipe is open; A plurality of purge branch pipes are connected between the purge gas inlet pipe and the exhaust pipe, and the plurality of purge branch pipes are respectively connected to the bottom of the plurality of sieve plates to blow gas toward the sieve plates. A plurality of exhaust branch pipes are connected between the purge gas outlet pipe and the exhaust pipe, and the plurality of exhaust branch pipes are respectively positioned opposite to the plurality of purge branch pipes. The gas outlet pipe is connected to the purge gas outlet pipe and is used to discharge gas in the direction of the gas flow in the separator body.

10. A method for treating tail gas from phosphoric acid processing, characterized in that: The tail gas treatment device for phosphoric acid processing according to any one of claims 1 to 9 is used, further comprising the following steps: S1. When it is necessary to scrape impurities on the inner wall of the separator body, adjust the mounting rod to rotate along the mounting outer frame, so that the sliding rod drives the positioning rod to slide away from the sliding ring body, and the extrusion block squeezes the inner wall scraper into the separator body; S2, until the positioning rod is completely separated from the positioning slot, at which time the inner wall scraper slides to the inside of the separator body and is connected to the assembly frame through the connecting component; S3, regulating the sliding ring body to rotate along the sliding ring platform to complete the scraping process of impurities on the inner wall of the separator body; S4. Adjust the sliding ring body to rotate to reset, and adjust the installation rod to rotate so that the positioning rod is fully inserted into the positioning slot. At this time, the inner wall scraper slides outward along the first assembly hole, and the extrusion block blocks and positions the inner wall scraper from one side of the inner wall scraper, and the inner wall scraper is reset.

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