Waste gas treatment device for chemical plant

Abstract

The invention discloses a waste gas treatment device for a chemical plant, and belongs to the technical field of waste gas treatment. In order to solve the problem that filler balls in a filler layer are difficult to orderly adjust in the prior art, the technical scheme is provided as follows: the device comprises a spray tower and a circulating water tank arranged at the bottom end of the spray tower, and a circulating water pump used for circulating flow of treatment liquid is mounted at the top of the circulating water tank. The waste gas treatment unit is arranged in the spray tower, and an inner sleeve in the filler layer mechanism drives a paving plate to move under the action of the driving mechanism, so that filler balls arranged in the filler layer mechanism are disturbed, the filler balls are efficiently and comprehensively rearranged in the filler layer mechanism; the adjusting piece is driven to move in the moving process of the inner sleeve, so that the hollow cover is extruded, reciprocating motion of the knocking piece is achieved under the action of the reset spring, rearrangement of the filler ball in the filler layer mechanism is assisted under the action of the knocking piece, and cleaning of impurities is accelerated.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for a chemical plant. Background Art

[0002] Chemical waste gas refers to toxic and harmful gases emitted by chemical plants during chemical production. These gases often contain a wide variety of pollutants with complex physical and chemical properties and varying toxicity, causing significant environmental pollution and impacting human health. Therefore, these gases must be treated using appropriate equipment, such as spray towers.

[0003] A Chinese patent, CN118341231B, discloses a self-cleaning organic waste gas treatment device comprising a spray tower, the lower portion of which is connected to an air inlet pipe, a first support frame slidably connected to the inside of the spray tower, and a first fixing rod fixedly connected to the inside of the spray tower.

[0004] Although the technical solution in the above patent document can process the packing balls and through holes in the packing layer, it still has the following defects during actual use: since the packing materials in the packing layer are arranged in a stacked manner, and the above technical solution uses the first rotating shaft to drive the spiral disk to rotate, so that the packing balls are cyclically moved up and then dropped to be rearranged. Such an arrangement method needs to ensure the orderliness of the continuous feeding and conveying of the packing balls during operation, but the individual packing balls in the packing layer are very likely to be stuck with each other and gathered into a group when randomly stacked, and it is difficult to ensure that the packing balls are transported in an orderly manner when the spiral disk rotates, which affects the adjustment of the packing balls and reduces the contact area between the packing balls and the exhaust gas during the circulation of the exhaust gas. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a waste gas treatment device for a chemical plant, which provides a waste gas treatment unit inside a spray tower, and then enables the inner sleeve in the packing layer mechanism to drive the paving plate to move under the action of a driving mechanism, so as to disturb the packing balls arranged in the packing layer mechanism, so that the packing balls are efficiently and comprehensively rearranged inside the packing layer mechanism, avoiding the situation where the position of the bottom packing balls remains unchanged. During the movement of the inner sleeve, the adjusting part is driven to move, thereby squeezing the hollow cover, and the reciprocating movement of the knocking part is achieved under the action of a reset spring, which assists the packing balls in rearranging in the packing layer mechanism and speeds up the cleaning of blockages, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A waste gas treatment device for a chemical plant includes a spray tower and a circulating water tank disposed at the bottom end of the spray tower. A circulating water pump for circulating a treatment liquid is installed on the top of the circulating water tank. A waste gas treatment component for spraying waste gas is provided inside the spray tower. A carrier ring located inside the spray tower is installed above the waste gas treatment component. A demisting layer for demisting gas is provided on the top of the carrier ring. The waste gas treatment component includes a base rod, a waste gas treatment unit, a splicing rod group, a scraping mechanism, and a driving mechanism. The waste gas treatment units include two, which are linearly distributed longitudinally, and the base rod passes through the two waste gas treatment units. The exhaust gas treatment unit includes a packing layer mechanism and a spraying mechanism, wherein the spraying mechanism is located above the packing layer mechanism, and the upper and lower packing layer mechanisms are linked by a splicing rod group. The scraping mechanism is located at the bottom of the packing layer mechanism below and is used to clean the inner wall of the intake pipe. The driving mechanism is used to drive the movement of the packing layer mechanism below.

[0007] As a further solution of the present invention, an auxiliary plate is integrally provided on the inner ring shell wall of the carrier ring, the top end of the base rod is fixedly connected to the bottom center of the auxiliary plate by screws, the packing layer mechanism includes two arc-shaped slide rails distributed up and down, the two arc-shaped slide rails are fixedly connected to the inner wall of the spray tower, and the two arc-shaped slide rails are commonly slidably connected to an inner sleeve, a plurality of spreading plates for turning over the packing balls are provided on the inner ring shell wall of the inner sleeve along the circumferential direction, a sleeve located on the base rod is sleeved between the plurality of spreading plates, the outer ring bottom end of the sleeve is fixedly connected to a chassis, a plurality of holes for gas passage are opened on the chassis, and the chassis is used to seal the bottom notch of the inner sleeve; The sleeve is provided with a plurality of through holes along the circumferential direction, and a round rod is provided in each through hole. A knocking piece is installed on the bottom ends of the plurality of round rods, and a reset spring located on the round rod is arranged between the chassis and the knocking piece. A hollow cover is installed on the top ends of the plurality of round rods, and the hollow cover is used to seal the top notch of the inner sleeve. Adjusting pieces are symmetrically provided on the top of the inner sleeve.

[0008] As a further embodiment of the present invention, the adjusting member includes an arc-shaped plate fixedly connected to the top wall of the inner sleeve by bolts, an arc-shaped wedge is welded to the bottom of the arc-shaped plate, a contact rod located on the hollow cover is provided below the arc-shaped wedge, and a ball is rollingly connected to the top end of the contact rod, and the ball is in rolling contact with the arc-shaped wedge; The upper and lower inner sleeves are connected by a splicing rod group.

[0009] As a further solution of the present invention, the spray mechanism includes a spraying member, a cleaning assembly and an auxiliary rod, wherein the cleaning assembly is arranged on the spraying member, and the auxiliary rod is arranged on the cleaning assembly; The spraying member includes a diverter ring sleeved on the base rod, and a plurality of hollow rods are arranged on the outer circumferential wall of the diverter tube along the circumferential direction. The hollow rods are connected to the inner cavity of the diverter tube. A plurality of spraying ports for spraying the treatment liquid are linearly distributed on the bottom shell wall of each hollow rod. Auxiliary ribs are arranged between two adjacent hollow rods, and a through hole is opened above each spraying port on the top shell wall of the corresponding hollow rod.

[0010] As a further embodiment of the present invention, the cleaning assembly includes a cleaning member, a sleeve, and an integration plate, wherein the cleaning members include a plurality of members, each movably connected to a corresponding through hole, and the sleeves also include a plurality of members, each sleeved on a corresponding cleaning member, and the tops of the plurality of sleeves are commonly connected to the integration plate; The cleaning member includes a cleaning scraper head and a cleaning shaft rod, wherein the cleaning scraper head is located inside the spray port, the cleaning shaft rod is fixedly connected to the top center of the cleaning scraper head, and the top end of the cleaning shaft rod passes through the corresponding through hole, the cleaning shaft rod and the corresponding through hole are rotatably connected through a bearing, an arc-shaped closed groove located on the cleaning shaft rod is provided above the bearing, an inner groove hole is provided on the peripheral wall of the sleeve, a convex rod is movably connected in the inner groove hole, the inner end of the convex rod extends into the arc-shaped closed groove, and is slidably connected to the arc-shaped closed groove; The auxiliary rods include two, which are symmetrically arranged on the integration plate in a front-to-back manner, and the bottom ends of the two auxiliary rods are jointly arranged on the corresponding hollow covers.

[0011] As a further solution of the present invention, an infusion channel is opened inside the base rod, and the infusion channel is connected to the inner cavity of the corresponding diversion ring. An infusion tube is installed at the output end of the circulating water pump, and the top end of the infusion tube passes through the peripheral wall of the spray tower and extends into the infusion channel.

[0012] As a further solution of the present invention, an intake pipe for exhaust gas to enter is provided on the bottom side wall of the spray tower, and the scraping mechanism includes a connecting rod group, a circular ring, a gear ring 1, a driven gear ring and a scraping member, wherein the driven gear ring is rotatably connected to the outer shell wall of the intake pipe, and the scraping member is fixedly connected to the side wall of the driven gear ring by bolts, and the scraping member is used to scrape the inner wall of the end of the intake pipe, the gear ring 1 is located above the intake pipe, and meshes with the driven gear ring for transmission, the circular ring is located at the top of the gear ring 1, and the gear ring 1 is connected to the packing layer mechanism below through a connecting rod group.

[0013] As a further solution of the present invention, the driving mechanism includes a fixed ring, a second gear ring, a gear and a motor, wherein the fixed ring is fixedly connected to the outer ring wall of the lower inner sleeve, the second gear ring is arranged at the top of the fixed ring, the gear is located above the second gear ring and is engaged with the second gear ring for transmission, a base is provided on the outer ring shell wall of the spray tower, the motor is provided on the base, and a rotating shaft is installed at the output end of the motor, the other end of the rotating shaft passes through the peripheral wall of the spray tower and is connected to the gear.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By setting up an exhaust gas treatment unit inside the spray tower, and then making the inner sleeve in the packing layer mechanism drive the paving plate to move under the action of the driving mechanism, the packing balls arranged in the packing layer mechanism are disturbed, so that they are efficiently and comprehensively rearranged inside the packing layer mechanism, avoiding the situation where the position of the bottom packing balls remains unchanged.

[0015] The movement of the inner sleeve drives the adjusting part to move, thereby intermittently squeezing the hollow cover, and realizing the reciprocating movement of the knocking part under the action of the reset spring. When the knocking part moves, it can not only assist in the rearrangement of the filler balls in the filler layer structure, and improve the tightness and uniformity of the rearrangement of the filler balls, but also the knocking of the knocking part on the chassis can accelerate the cleaning of blockages in the holes of the chassis, thereby ensuring the fluidity of the exhaust gas.

[0016] A scraping mechanism is provided at the bottom of the lower packing layer mechanism. When the inner sleeve in the packing layer mechanism moves, the movement of the gear ring 1 is synchronously driven by the action of the connecting rod group in the scraping mechanism. The gear ring 1 and the driven gear ring are engaged and transmitted, thereby driving the scraping member to scrape the inner wall of the intake pipe, and then automatically clean the attachments on the inner wall of the intake pipe with the help of the airflow when the exhaust gas enters.

[0017] The hollow cover can synchronously drive the movement of the cleaning components in the spray mechanism of the exhaust unit when it moves up and down, thereby realizing automatic scraping and cleaning of each spray port in the spray mechanism and extending the service life of the spray mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of an exhaust gas treatment device used in a chemical plant; Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure; Figure 3 for Figure 2 Schematic diagram of the structure viewed from above; Figure 4 for Figure 2 Schematic diagram of the exhaust gas treatment component structure; Figure 5 for Figure 4 Schematic diagram of the structure viewed from above; Figure 6 for Figure 5 A magnified schematic diagram of the local structure at point A; Figure 7 for Figure 4 Schematic diagram of the exhaust gas treatment unit structure; Figure 8 for Figure 7 Schematic diagram of the structure viewed from above; Figure 9 for Figure 8 A magnified schematic diagram of the local structure at point B; Figure 10 for Figure 7 Schematic diagram of the spray mechanism structure; Figure 11 for Figure 10 Schematic diagram of the structure viewed from above; Figure 12 for Figure 11 A magnified schematic diagram of the local structure at point C; Figure 13 for Figure 12 Schematic diagram of the cleaning component structure.

[0019] In the figure: 1, spray tower; 2, circulating water tank; 3, circulating water pump; 4, carrier ring; 5, demisting layer; 6, base rod; 7, packing layer mechanism; 71, inner sleeve; 72, paving board; 73, sleeve; 74, chassis; 75, round rod; 76, knocking piece; 77, hollow cover; 78, adjustment piece; 781, curved plate; 782, curved wedge; 8, spray mechanism; 81, spraying piece; 82, cleaning component; 82 1. Cleaning part; 822. Sleeve; 8211. Cleaning scraper; 8212. Cleaning shaft; 823. Integration plate; 83. Auxiliary rod; 9. Splicing rod group; 10. Scraping mechanism; 101. Connecting rod group; 102. Circular ring; 103. Gear ring 1; 104. Driven gear ring; 105. Scraping part; 11. Driving mechanism; 111. Fixed ring; 112. Gear ring 2; 113. Gear; 114. Motor. DETAILED DESCRIPTION

[0020] See also Figure 1-Figure 3 In an embodiment of the present invention, a waste gas treatment device for a chemical plant includes a spray tower 1 and a circulating water tank 2 disposed at the bottom end of the spray tower 1. A circulating water pump 3 for circulating a treatment liquid is installed on the top of the circulating water tank 2. The circulating water pump 3 is used to store the treatment liquid used for spraying the waste gas. A liquid replenishment pipe for replenishing the treatment liquid and a sewage pipe for discharging the waste liquid are installed on the left side of the shell wall of the circulating water pump 3. The sewage pipe is located below the liquid replenishment pipe. The spray tower 1 is provided with an exhaust gas treatment component for exhaust gas spray treatment. A carrier ring 4 is installed above the exhaust gas treatment component and is located inside the spray tower 1. A demisting layer 5 for gas demisting is provided on the top of the carrier ring 4. The demisting layer 5 on the carrier ring 4 is used to demist the gas after spraying before discharge to ensure the dryness of the gas; The exhaust gas treatment component includes a base rod 6, an exhaust gas treatment unit, a splicing rod group 9, a scraping mechanism 10 and a driving mechanism 11, wherein the exhaust gas treatment unit includes two, which are longitudinally linearly distributed, and the base rod 6 passes through the two exhaust gas treatment units; The exhaust gas treatment unit includes a packing layer mechanism 7 and a spray mechanism 8, wherein the spray mechanism 8 is located above the packing layer mechanism 7. The treatment liquid sprayed by the spray mechanism 8 contacts the packing layer mechanism 7, and then treats the exhaust gas passing through the packing layer mechanism 7. The upper and lower packing layer mechanisms 7 are linked by a splicing rod group 9. When a single packing layer mechanism 7 moves, the two packing layer mechanisms 7 move synchronously. The scraping mechanism 10 is located at the bottom of the lower packing layer mechanism 7 and is used to clean the inner wall of the intake pipe. The driving mechanism 11 is used to drive the movement of the lower packing layer mechanism 7.

[0021] See also Figure 3-Figure 9 In the embodiment of the present invention, an auxiliary plate is integrally provided on the inner shell wall of the carrier ring 4. The auxiliary plate has a Y-shaped structure, which can not only stably support the base rod 6, but also reserve a large amount of space for the contact between the gas and the demisting layer 5; The top of the base rod 6 is fixedly connected to the bottom center of the auxiliary plate by screws. The packing layer mechanism 7 includes two arc-shaped slide rails distributed up and down. Both arc-shaped slide rails are fixedly connected to the inner wall of the spray tower 1, and an inner sleeve 71 is slidably connected to the two arc-shaped slide rails. A sealing strip is provided between the inner sleeve 71 and each arc-shaped slide rail to prevent gas from leaking without being sprayed. A plurality of spreading plates 72 for turning over the filler balls are provided along the circumferential direction on the inner ring shell wall of the inner sleeve 71. The spreading plates 72 adopt an arc-shaped structure, which makes it easier to turn over the stacked filler balls. A sleeve 73 located on the base rod 6 is sleeved between the plurality of spreading plates 72. The outer ring bottom end of the sleeve 73 is fixedly connected to a chassis 74. The chassis 74 has a plurality of holes for gas passage. The chassis 74 is used to cover the bottom notch of the inner sleeve 71. The sleeve 73 is fixedly connected to the base rod 6 to ensure the stability of the chassis 74. Three through holes are opened on the sleeve 73 along the circumferential direction, and a round rod 75 is provided in each through hole. A knocking piece 76 is installed at the bottom end of the three round rods 75, and a return spring located on the round rod 75 is sleeved between the chassis 74 and the knocking piece 76. The return spring provided on each round rod 75 can not only provide power for the reset of the knocking piece 76 to the greatest extent, but also ensure the stability of the reset movement of the knocking piece 76. The knocking piece 76 is composed of a positioning ring, a straight rod and a knocking rod. Among them, the straight rod includes three, which are arranged on the outer ring shell wall of the positioning ring along the circumferential direction, and the knocking rod also includes three, which are respectively arranged on the top of the corresponding straight rod to vibrate the chassis 74; When the knocking member 76 knocks the bottom plate 74, it can not only vibrate the filler balls stacked thereon so that they are evenly distributed and compact after being turned over, but also the vibration of the bottom plate 74 can remove impurities in the holes thereon; A hollow cover 77 is commonly installed on the top of the three round rods 75. The hollow cover 77 is used to cover the top notch of the inner sleeve 71. Adjusting parts 78 are symmetrically provided on the top of the inner sleeve 71.

[0022] The adjusting member 78 comprises an arc-shaped plate 781 fixedly connected to the top wall of the inner sleeve 71 by bolts. An arc-shaped wedge 782 is welded to the bottom of the arc-shaped plate 781. A contact rod located on the hollow cover 77 is provided below the arc-shaped wedge 782. A ball is rollingly connected to the top of the contact rod, and the ball is in rolling contact with the arc-shaped wedge 782. When the inner sleeve 71 rotates, the adjusting member 78 is driven to move synchronously. The arc-shaped wedge 782 in the adjusting member 78 comes into contact with the contact rod on the hollow cover 77 during the rotation process, and then applies force to the contact rod to move the hollow cover 77 downward. If the arc-shaped wedge 782 in the adjusting member 78 leaves the contact rod, the return spring of the contact rod can drive the round rod 75 to return to its original position in the absence of force, thereby causing the knocking member 76 and the hollow cover 77 to return to their original position. The upper and lower inner sleeves 71 are connected by a splicing rod group 9.

[0023] See also Figure 7-Figure 8 and Figure 10-13 In the embodiment of the present invention, the spray mechanism 8 includes a spraying member 81, a cleaning assembly 82 and an auxiliary rod 83, wherein the cleaning assembly 82 is provided on the spraying member 81, and the auxiliary rod 83 is provided on the cleaning assembly 82; The spraying member 81 includes a diverter ring sleeved on the base rod 6. A plurality of hollow rods are provided on the outer circumferential wall of the diverter tube along the circumferential direction. The hollow rods are connected to the inner cavity of the diverter tube, and the treatment liquid entering the diverter tube is diverted to each hollow rod. There are multiple spray ports for spraying the treatment liquid linearly distributed on the bottom shell wall of each hollow rod. Auxiliary ribs are arranged between two adjacent hollow rods. The auxiliary ribs are used to ensure the stability of the spraying member 81. A through hole is opened above each spray port on the top shell wall of the corresponding hollow rod.

[0024] The cleaning assembly 82 includes a cleaning member 821, a sleeve 822, and an integration plate 823. There are multiple cleaning members 821, each movably connected to a corresponding through-hole. There are also multiple sleeves 822, each sleeve mounted on a corresponding cleaning member 821. The tops of the multiple sleeves 822 are commonly connected to the integration plate 823. The movement of the integration plate 823 synchronously drives the multiple sleeves 822 to move, thereby achieving adjustment of the corresponding cleaning members 821. The cleaning member 821 includes a cleaning scraper head 8211 and a cleaning shaft rod 8212, wherein the cleaning scraper head 8211 is located inside the spray port, the cleaning shaft rod 8212 is fixedly connected to the top center of the cleaning scraper head 8211, and the top end of the cleaning shaft rod 8212 passes through the corresponding through hole, the cleaning shaft rod 8212 and the corresponding through hole are rotatably connected via a bearing, an arc-shaped closed groove is provided above the bearing and located on the cleaning shaft rod 8212, an inner groove hole is provided on the peripheral wall of the sleeve 822, a convex rod is movably connected to the inner groove hole, the inner end of the convex rod extends into the arc-shaped closed groove and is slidably connected to the arc-shaped closed groove; When the sleeve 822 is lifted and lowered, it simultaneously drives the protruding rod to move in the arc-shaped closed groove, thereby causing the cleaning member 821 to rotate and scrape and clean the inner wall of the spray port; There are two auxiliary rods 83, which are symmetrically arranged on the integration plate 823 in a front-to-back manner. The bottom ends of the two auxiliary rods 83 are jointly arranged on the corresponding hollow cover 77. When the hollow cover 77 moves up and down, the integration plate 823 is driven to move synchronously through the auxiliary rods 83.

[0025] An infusion channel is provided inside the base rod 6, which is connected to the inner cavity of the corresponding diversion ring. An infusion tube is installed at the output end of the circulating water pump 3. The top end of the infusion tube passes through the peripheral wall of the spray tower 1 and extends into the infusion channel.

[0026] See also Figure 2 and Figure 4-Figure 6In the embodiment of the present invention, an air intake pipe for exhaust gas is provided on the bottom side wall of the spray tower 1, and an exhaust pipe connected to an external negative pressure device is connected to the top of the spray tower 1 by bolts. The scraping mechanism 10 includes a connecting rod group 101, a circular ring 102, a gear ring 103, a driven gear ring 104 and a scraping member 105, wherein the driven gear ring 104 is rotatably connected to the outer shell wall of the air intake pipe, and the scraping member 105 is fixedly connected to the side wall of the driven gear ring 104 by bolts. The scraping member 105 is used to scrape the inner wall of the end of the air intake pipe, the gear ring 103 is located above the air intake pipe and meshes with the driven gear ring 104 for transmission, the circular ring 102 is located on the top of the gear ring 103, and the gear ring 103 is connected to the packing layer mechanism 7 below by the connecting rod group 101; When the inner sleeve 71 in the packing layer mechanism 7 rotates, the connecting rod group 101 drives the ring 102 to move, so that the gear ring 103 moves synchronously, and the gear ring 103 engages with the driven gear ring 104, so that the scraping member 105 scrapes and cleans the inner wall of the port of the intake pipe.

[0027] See also Figure 2 、 Figure 4 and Figure 7 In the embodiment of the present invention, the driving mechanism 11 includes a fixed ring 111, a second gear ring 112, a gear 113 and a motor 114, wherein the fixed ring 111 is fixedly connected to the outer circumferential wall of the lower inner sleeve 71, the second gear ring 112 is arranged on the top of the fixed ring 111, the gear 113 is located above the second gear ring 112 and meshes with the second gear ring 112 for transmission, a base is provided on the outer shell wall of the spray tower 1, the motor 114 is provided on the base, and a rotating shaft is installed at the output end of the motor 114, the other end of the rotating shaft passes through the circumferential wall of the spray tower 1 and is connected to the gear 113; The motor 114 drives the gear 113 to rotate via the rotating shaft, and the gear 113 is meshed with the second gear ring 112 to transmit the rotation, thereby causing the inner sleeve 71 in the packing layer mechanism 7 to rotate.

[0028] The working principle of the present invention is as follows: when the equipment is treating the waste gas, the circulating water pump 3 pumps the treatment liquid in the circulating water tank 2 into the base rod 6, and then the treatment liquid is discharged from each spray mechanism 8 to spray the corresponding packing layer mechanism 7. The waste gas enters the interior of the spray tower 1 from the air inlet pipe, and the waste gas is demisted in the demisting layer 5 after passing through the waste gas treatment component. Then, the treated waste gas enters the next treatment process from the exhaust pipe. After the equipment has treated the waste gas for a period of time, it is necessary to adjust and clean the packing balls in each packing layer mechanism 7 and the spray port in the spray mechanism 8. The motor 114 in the driving mechanism 11 is started by the external controller body, and the motor 114 drives the gear 113 to rotate through the rotating shaft. The gear 113 is meshed with the second gear ring 112 for transmission, thereby causing the inner sleeve 71 in the packing layer mechanism 7 at the lower position to rotate. Since the inner sleeves 71 in the upper and lower packing layer mechanisms 7 are connected by the splicing rod group 9, when the inner sleeve 71 in the packing layer mechanism 7 at the lower position rotates, the inner sleeve 71 in the packing layer mechanism 7 at the upper position moves synchronously. The inner sleeve 71 in the packing layer mechanism 7 at the lower position rotates and simultaneously drives the ring 102 to move synchronously through the connecting rod group 101 in the scraping mechanism 10. The movement of the ring 102 drives the gear ring 103 to move, and the gear ring 103 and the driven gear ring 104 are engaged with each other to drive the scraper 105 to rotate. The scraper 105 scrapes the inner wall of the port of the intake pipe during the movement, thereby scraping off impurities attached to the inner wall of the port of the intake pipe. The scraped impurities are brought into the interior of the spray tower 1 under the action of the exhaust gas. When the inner sleeve 71 rotates, it drives the multiple paving boards 72 arranged on its inner wall to move synchronously. At this time, since the chassis 74 is fixedly connected to the sleeve 73, and the sleeve 73 is also fixedly connected to the base rod 6, the chassis 74 is in a stationary state. When the inner sleeve 71 drives the paving boards 72 to move, it not only scrapes the filler balls stacked in the inner sleeve 71, causing the filler balls to flip over, thereby adjusting the filler balls on the bottom layer, but also the paving boards 72 can scrape the chassis 74 when they move, thereby cleaning the attached impurities; When the inner sleeve 71 rotates, it also drives the adjustment member 78 to move synchronously. During the rotation of the adjustment member 78, the arc-shaped wedge 782 of the adjustment member 78 comes into contact with the contact rod on the hollow cover 77. After the contact rod is subjected to force, the hollow cover 77 is pressed down. When the hollow cover 77 moves, it applies force to the round rod 75, which drives the knocking member 76 downward through the round rod 75, stretching the return spring. When the arc-shaped wedge 782 in the adjustment member 78 leaves the contact rod, the knocking member 76 and the hollow cover 77 move upward accordingly. Among them, the knocking member 76 knocks the chassis 74. After the chassis 74 is subjected to force, the filler balls stacked inside it are tightly and evenly distributed with the vibration force. The chassis 74 is also subjected to force to shake out impurities in the holes on it, avoiding the holes from being blocked and ensuring the efficiency of gas passage. During the up and down movement of the hollow cover 77, the auxiliary rod 83 synchronously drives the lifting movement of the integration plate 823 in the cleaning assembly 82. When the integration plate 823 is moving, the sleeves 822 loaded thereon perform lifting and lowering movements on the cleaning shaft 8212 of the corresponding cleaning member 821. As the sleeve 822 moves, the convex rod is driven to move, and the convex rod slides in the arc-shaped closed groove on the cleaning shaft 8212, so that the cleaning shaft 8212 drives the cleaning scraper 8211 to rotate, thereby achieving scraping and cleaning of the inner wall of the spray port.

[0029] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A waste gas treatment device for a chemical plant, comprising a spray tower (1), and a circulating water tank (2) arranged at the bottom end of the spray tower (1), a circulating water pump (3) for circulating a treatment liquid installed on the top of the circulating water tank (2), characterized in that: The spray tower (1) is provided with an exhaust gas treatment component for exhaust gas spray treatment, a carrier ring (4) located inside the spray tower (1) is installed above the exhaust gas treatment component, and a demisting layer (5) for gas demisting is provided on the top of the carrier ring (4), and the exhaust gas treatment component includes a base rod (6), an exhaust gas treatment unit, a splicing rod group (9), a scraping mechanism (10) and a driving mechanism (11), wherein the exhaust gas treatment unit includes two exhaust gas treatment units, which are linearly distributed longitudinally, and the base rod (6) passes through the two exhaust gas treatment units; The exhaust gas treatment unit includes a packing layer mechanism (7) and a spray mechanism (8), wherein the spray mechanism (8) is located above the packing layer mechanism (7), and the upper and lower packing layer mechanisms (7) are linked via a splicing rod group (9). The scraping mechanism (10) is located at the bottom of the packing layer mechanism (7) below and is used to clean the inner wall of the intake pipe. The driving mechanism (11) is used to drive the movement of the packing layer mechanism (7) below.

2. The waste gas treatment device for a chemical plant according to claim 1, characterized in that: An auxiliary plate is integrally provided on the inner ring shell wall of the carrier ring (4), and the top end of the base rod (6) is fixedly connected to the bottom center of the auxiliary plate by screws. The packing layer mechanism (7) includes two arc-shaped slide rails distributed up and down, and the two arc-shaped slide rails are fixedly connected to the inner wall of the spray tower (1), and the two arc-shaped slide rails are slidably connected to an inner sleeve (71) together, and a plurality of spreading plates (72) for turning the packing balls are provided on the inner ring shell wall of the inner sleeve (71) along the circumferential direction, and a sleeve (73) located on the base rod (6) is provided between the plurality of spreading plates (72), and the outer ring bottom end of the sleeve (73) is fixedly connected to a chassis (74), and a plurality of holes for gas passage are provided on the chassis (74), and the chassis (74) is used to seal the bottom gap of the inner sleeve (71); The sleeve (73) is provided with a plurality of through holes along the circumferential direction, and a round rod (75) is provided in each through hole. A knocking member (76) is installed on the bottom ends of the plurality of round rods (75), and a return spring located on the round rod (75) is sleeved between the chassis (74) and the knocking member (76). A hollow cover (77) is installed on the top ends of the plurality of round rods (75). The hollow cover (77) is used to cover the top notch of the inner sleeve (71). An adjusting member (78) is symmetrically provided on the top of the inner sleeve (71).

3. The waste gas treatment device for a chemical plant according to claim 2, characterized in that: The regulating member (78) includes an arc-shaped plate (781) fixedly connected to the top shell wall of the inner sleeve (71) by bolts, an arc-shaped wedge (782) is welded to the bottom of the arc-shaped plate (781), a contact rod located on the hollow cover (77) is provided below the arc-shaped wedge (782), and a ball is connected to the top of the contact rod in a rolling manner, and the ball is in rolling contact with the arc-shaped wedge (782); The upper and lower inner sleeves (71) are connected via a splicing rod group (9).

4. The waste gas treatment device for a chemical plant according to claim 2, characterized in that: The spray mechanism (8) includes a spraying member (81), a cleaning assembly (82) and an auxiliary rod (83), wherein the cleaning assembly (82) is arranged on the spraying member (81), and the auxiliary rod (83) is arranged on the cleaning assembly (82); The spraying member (81) includes a diverter ring sleeved on the base rod (6), a plurality of hollow rods are arranged on the outer circumferential wall of the diverter tube along the circumferential direction, the hollow rods and the inner cavity of the diverter tube are connected to each other, a plurality of spraying ports for spraying the treatment liquid are linearly distributed on the bottom shell wall of each hollow rod, auxiliary ribs are arranged between two adjacent hollow rods, and a through hole is opened above each spraying port on the top shell wall of the corresponding hollow rod.

5. The waste gas treatment device for a chemical plant according to claim 4, characterized in that: The cleaning assembly (82) includes a cleaning piece (821), a sleeve (822) and an integration plate (823), wherein the cleaning piece (821) includes a plurality of pieces, each movably connected to a corresponding through hole, and the sleeve (822) also includes a plurality of pieces, each sleeve being sleeved on a corresponding cleaning piece (821), and the tops of the plurality of sleeves (822) are connected to the integration plate (823) in common; The cleaning member (821) includes a cleaning scraper (8211) and a cleaning shaft (8212), wherein the cleaning scraper (8211) is located inside the spray port, the cleaning shaft (8212) is fixedly connected to the top center of the cleaning scraper (8211), and the top end of the cleaning shaft (8212) passes through the corresponding through hole, the cleaning shaft (8212) and the corresponding through hole are rotatably connected via a bearing, an arc-shaped closed groove located on the cleaning shaft (8212) is provided above the bearing, an inner groove hole is provided on the peripheral wall of the sleeve (822), a convex rod is movably connected in the inner groove hole, and the inner end of the convex rod extends into the arc-shaped closed groove and is slidably connected to the arc-shaped closed groove; The auxiliary rods (83) include two, which are symmetrically arranged on the integration plate (823) in a front-to-back manner, and the bottom ends of the two auxiliary rods (83) are jointly arranged on the corresponding hollow cover (77).

6. The waste gas treatment device for a chemical plant according to claim 4, characterized in that: An infusion channel is provided inside the base rod (6), and the infusion channel is communicated with the inner cavity of the corresponding diversion ring. An infusion tube is installed at the output end of the circulating water pump (3), and the top end of the infusion tube passes through the peripheral wall of the spray tower (1) and extends into the infusion channel.

7. The waste gas treatment device for a chemical plant according to claim 1, characterized in that: An intake pipe for exhaust gas is provided on the bottom side wall of the spray tower (1), and the scraping mechanism (10) includes a connecting rod group (101), a circular ring (102), a gear ring (103), a driven gear ring (104) and a scraping member (105), wherein the driven gear ring (104) is rotatably connected to the outer shell wall of the intake pipe, and the scraping member (105) is fixedly connected to the side wall of the driven gear ring (104) by bolts, and the scraping member (105) is used to scrape the inner wall of the end of the intake pipe, the gear ring (103) is located above the intake pipe and meshes with the driven gear ring (104), the circular ring (102) is located at the top of the gear ring (103), and the gear ring (103) and the packing layer mechanism (7) below are connected through the connecting rod group (101).

8. The waste gas treatment device for a chemical plant according to claim 2, characterized in that: The driving mechanism (11) includes a fixed ring (111), a second gear ring (112), a gear (113) and a motor (114), wherein the fixed ring (111) is fixedly connected to the outer peripheral wall of the lower inner sleeve (71), the second gear ring (112) is arranged on the top of the fixed ring (111), the gear (113) is located above the second gear ring (112) and is meshed with the second gear ring (112) for transmission, a base is provided on the outer shell wall of the spray tower (1), the motor (114) is provided on the base, and a rotating shaft is installed at the output end of the motor (114), the other end of the rotating shaft passes through the peripheral wall of the spray tower (1) and is connected to the gear (113).

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