Flushing device for flue inlet of absorption tower

Abstract

The invention discloses an absorption tower flue inlet flushing device, and relates to the technical field of absorption tower flue inlet flushing, the absorption tower flue inlet flushing device comprises a cleaning and scraping unit, and the cleaning and scraping unit comprises a movable gear ring, a clamping ring, a cleaning and scraping assembly and a connecting ring; the flushing unit comprises a connecting frame, a gear, a clamping ring, a clutch piece, a reciprocating rod, a protection piece and a flushing assembly. The device has the beneficial effects that the effect of cleaning and scraping scale on the inner wall of the flue is achieved firstly, and if the scale cannot be cleaned and scraped, the flushing assembly is started again to flush the pipe wall at the position and then scrape the scale. The flushing frequency and range of the flue are reduced, so that the rising speed of the liquid level of the absorption tower is reduced, and the situation that the liquid level of the absorption tower and the differential pressure of the demister cannot be controlled is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of absorption tower flue flushing, in particular to an absorption tower flue inlet flushing device. Background Art

[0002] The main equipment of the countercurrent limestone-gypsum wet flue gas desulfurization system is the absorption tower. The demister system is the main equipment of the absorption tower to ensure that the treated flue gas does not carry slurry. Therefore, the demister must be flushed during operation. However, the traditional absorption tower demister can only flush the inside of the absorption tower, but cannot flush the absorption tower inlet flue. After the absorption tower inlet flue has been running for a period of time, it is easy to form gypsum accumulation on the flue wall. If the gypsum accumulation is not removed in time, it will gradually form difficult-to-remove scale, seriously hindering the normal operation of the desulfurization system. At present, the conventional manual cleaning method is only implemented during the system shutdown and maintenance, which cannot meet the real-time cleaning needs. It is not only inefficient and labor-intensive, but also the flushing water in the cleaning process flows back to the absorption tower, which will cause the liquid level to rise, affecting the control of the absorption tower liquid level and the demister differential pressure, which is not conducive to the long-term stable operation of the system. Summary of the invention

[0003] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the object of the present invention is to provide an absorption tower flue inlet flushing device, which can solve the problem that the flue cannot be cleaned in real time, and the problem that flushing the flue will cause the liquid level of the absorption tower to rise again.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an absorption tower flue inlet flushing device, comprising a basic unit, including an absorption tower, a flue obliquely arranged on one side of the absorption tower, a connecting seat fixedly sleeved on the outside of the flue, a motor fixedly arranged on the connecting seat, and a driving gear arranged at the output end of the motor; The scraping unit comprises a gear ring slidably connected to the flue circumference, a clamping ring fixedly connected to the bottom of the gear ring, a scraping assembly arranged at the bottom of the clamping ring, and a connecting ring fixedly connected to the bottom of the scraping assembly; The flushing unit includes a connecting frame arranged on the inner side of the gear ring, a gear arranged at the bottom of the connecting frame, a retaining ring arranged on the inner side of the gear, a clutch arranged at the bottom of the retaining ring, a reciprocating rod arranged at the bottom of the clutch, a protective member arranged on the reciprocating rod, and a flushing assembly arranged on one side of the protective member.

[0006] As a preferred solution of the absorption tower flue inlet flushing device described in the present invention, the gear ring includes an outer gear ring meshing on one side of the driving tooth, an inner gear ring fixedly arranged on the inner side of the outer gear ring, a plurality of groups of grooves in a circular array opened at the bottom of the gear ring, and a limit groove opened at the top of the gear ring.

[0007] As a preferred solution of the absorption tower flue inlet flushing device of the present invention, the clamping ring includes a plurality of clamping columns clamped with the clamping groove, a sliding groove opened on one side of the clamping ring, and a plurality of arc grooves in a circumferential array opened at the bottom of the sliding groove; The scraping assembly comprises a positioning piece movably clamped on the inner side of the arc groove, a scraping piece fixedly arranged on the outer side of the positioning piece, and a connecting block fixedly arranged on the inner side of the scraping piece.

[0008] As a preferred solution of the absorption tower flue inlet flushing device of the present invention, wherein: the connecting frame includes a slider slidably arranged inside the limiting groove, and a rotating shaft hingedly arranged on one side of the slider; The gear includes a circular groove penetrating the inner side thereof, and a ratchet fixedly arranged on the circumference of the circular groove; The clamping ring comprises a clamping disc movably embedded in the inner side of the circular groove and a ratchet pawl fixedly arranged on the peripheral side of the clamping disc.

[0009] As a preferred solution of the flue inlet flushing device of the absorption tower of the present invention, the clutch member includes an upper tooth column fixedly arranged at the bottom of the clamping plate, a lower tooth column arranged at the bottom of the upper tooth column, and a first spring fixedly arranged at the periphery of the upper tooth column and the lower tooth column at the same time; The reciprocating rod comprises a reciprocating groove arranged on its rod body.

[0010] As a preferred solution of the absorption tower flue inlet flushing device of the present invention, the positioning member includes an arc block slidably arranged at the bottom of the arc groove, a telescopic block arranged at the bottom of the arc block, and a second spring fixedly arranged between the telescopic block and the arc block.

[0011] As a preferred solution of the absorption tower flue inlet flushing device of the present invention, the scraper includes an arc plate arranged on the outside of the second spring, a U-shaped plate fixedly arranged on the outside of the arc plate, and a plurality of flushing grooves equidistantly extending through the U-shaped plate.

[0012] As a preferred solution of the absorption tower flue inlet flushing device of the present invention, the protective member includes a limit seat threadedly connected to the reciprocating rod, and a protective cover fixedly clamped on the outer side of the limit seat.

[0013] As a preferred solution of the absorption tower flue inlet flushing device of the present invention, the limit seat includes a limit bearing threadedly connected to the reciprocating rod, and a claw fixedly arranged on the outer side of the limit bearing.

[0014] As a preferred solution of the absorption tower flue inlet flushing device of the present invention, the flushing assembly includes a water pipe arranged on the inner side of the claw, flushing nozzles fixedly arranged at equal intervals on one side of the water pipe, and a throttle valve arranged at the end of the water pipe.

[0015] The beneficial effects of the present invention are as follows: the scale on the inner wall of the flue is first scraped off, and if the scale cannot be removed by scraping, the flushing component is started again to flush the pipe wall at that location and then scrape it off. The flushing frequency and range of the flue are reduced, thereby reducing the rising speed of the absorption tower liquid level, and avoiding the occurrence of uncontrollable absorption tower liquid level and demister differential pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the absorption tower flue inlet flushing device of the present invention.

[0018] Figure 2 It is a side full-section schematic diagram of the absorption tower flue inlet flushing device of the present invention.

[0019] Figure 3 It is a front half-section structural schematic diagram of the absorption tower flue inlet flushing device of the present invention.

[0020] Figure 4 It is a schematic diagram of the partial structure explosion of the absorption tower flue inlet flushing device of the present invention.

[0021] Figure 5 for Figure 3 An enlarged view of the connection between the scraping unit and the flushing unit at A in FIG.

[0022] Figure 6 It is a partial cross-sectional view of the clamping ring and the scraping assembly of the present invention.

[0023] Figure 7 It is a partial cross-sectional view of the protective element structure of the present invention.

[0024] Figure 8 for Figure 3 An enlarged view of the flushing component structure at point B in FIG.

[0025] Fig. 9 This is an enlarged view of the structure of the lower tooth post being detached from the upper tooth post's socket.

[0026] In the figure: 100, base unit; 101, absorption tower; 102, flue; 103, connecting seat; 104, motor; 105, driving gear; 200, scraping unit; 201, gear ring; 202, snap ring; 203, scraping assembly; 204, connecting ring; 300, flushing unit; 301, connecting frame; 302, gear; 303, snap ring; 304, clutch; 305, reciprocating rod; 306, protective member; 307, flushing assembly; 201a, outer gear ring; 201b, inner gear ring; 201c, slot; 201d, limit slot; 202a, snap column; 202b, sliding slot; 202c, arc slot; 203a, positioning member; 203b, scraping member; 20 3c, connecting block; 301a, slider; 301b, rotating shaft; 302a, circular groove; 302b, ratchet; 303a, clamping plate; 303b, pawl; 304a, upper tooth column; 304b, lower tooth column; 304c, first spring; 305a, reciprocating groove; 203a-1, arc block; 203a-2, telescopic block; 203a-3, second spring; 203b-1, arc plate; 203b-2, U-shaped plate; 203b-3, flushing groove; 306a, limit seat; 306b, protective cover; 306a-1, limit bearing; 306a-2, claw; 307a, water pipe; 307b, flushing nozzle; 307c, throttle valve; M, slot; N, positioning column. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1, reference Figure 1~Figure 3, which is the first embodiment of the present invention, and provides an absorption tower flue inlet flushing device, which includes a basic unit 100, including an absorption tower 101, a flue 102 obliquely arranged on one side of the absorption tower 101, a connecting seat 103 fixedly sleeved on the outside of the flue 102, a motor 104 fixedly arranged on the connecting seat 103, and a driving gear 105 arranged at the output end of the motor 104; The scraping unit 200 includes a gear ring 201 slidably mounted on the side of the flue 102, a clamping ring 202 fixedly mounted on the bottom of the gear ring 201, a scraping assembly 203 mounted on the bottom of the clamping ring 202, and a connecting ring 204 fixedly mounted on the bottom of the scraping assembly 203; The flushing unit 300 includes a connecting frame 301 arranged on the inner side of the ring gear 201, a gear 302 arranged at the bottom of the connecting frame 301, a retaining ring 303 arranged on the inner side of the gear 302, a clutch 304 arranged at the bottom of the retaining ring 303, a reciprocating rod 305 arranged at the bottom of the clutch 304, a protective member 306 arranged on the reciprocating rod 305, and a flushing assembly 307 arranged on one side of the protective member 306.

[0031] It should be noted that if Figure 1 As shown, in the prior art, the flue 102 is generally tilted and arranged at the bottom of the absorption tower 101, and the flue 102 is the entrance of the absorption tower 101. The flue gas enters the absorption tower 101 through the flue 102, and after being processed by the absorption tower 101, the flue gas will be discharged without carrying gypsum slurry. In this embodiment, a group of connecting seats 103 are threadedly connected to the outer wall of the flue 102, and a group of motors 104 are fixedly welded on the connecting seats 103. The output end of the motor 104 is fixedly connected to a group of driving teeth 105, and the driving teeth 105 provide a rotational driving force for the scraping unit 200 and the flushing unit 300.

[0032] Better, such as Figure 2As shown, a circle of annular grooves is provided along the pipe body near the pipe mouth of the flue 102, and the annular groove can slide and embed the gear ring 201 on the pipe wall of the flue 102. The driving teeth 105 are meshed on the outer side of the gear ring 201, and the driving teeth 105 can drive the gear ring 201 to rotate. The bottom of the gear ring 201 is fixedly clamped with a group of clamping rings 202 through a clamping block, and the clamping ring 202 is elastically connected to the cleaning component 203 at the bottom thereof through the clamping mode of the inclined arc block and the arc groove, and the bottom of the cleaning component 203 is hinged on the connecting ring 204, and the connecting ring 204 is slidably limited on the inner wall of the flue 102. In addition, a group of connecting frames 301 are hinged on the end face of the gear ring 201, and the function of the connecting frame 301 is to limit the gear 302 at the bottom thereof, so that it can always be meshed with the gear ring 201 and fit the side wall of the gear ring 201. The gear 302 has a certain rotation damping force, which can prevent the gear 302 (without the action of the limiting mechanism) from rotating with the ring gear 201 and rotating on its own. A set of snap rings 303 are movably sleeved on the inner side of the gear 302, and a set of clutches 304 are fixedly welded to the bottom of the snap rings 303. The clutches 304 can prevent the reciprocating rod 305 from overloading. The reciprocating rod 305 is threadedly connected with a set of protective members 306, which can move with the rotation of the reciprocating rod 305.

[0033] During use, when the motor 104 is rotating, the driving gear 105 can drive the gear ring 201 to rotate in the annular groove of the flue 102; and the clamping ring 202 at the bottom of the gear ring 201 is connected to the gear ring 201 by clamping, so that the clamping ring 202 can rotate coaxially with the gear ring 201, and the cleaning component 203 at the bottom of the clamping ring 202 can scrape the inner wall of the flue 102 when there is no resistance. And the gear 302 has a certain damping force, so that when the gear ring 201 rotates, the gear 302 originally meshed on the inner side of the gear ring 201 will remain relatively still with the gear ring 201 and revolve around the gear ring 201 due to its own rotation damping force, and the gear 302 cannot rotate on its own. If the scraping assembly 203 performs the scraping task on the side wall of the flue 102 and the dirt on the wall cannot be scraped off, the scraping assembly 203 will be disconnected from the clamping ring 202, and the inner inclined groove and inclined block of the two will be clamped, so that the scraping assembly 203 can no longer follow the gear ring 201 to revolve in the flue 102, and the gear 302 will stop following the gear ring 201 to revolve under the action of the scraping assembly 203 being limited, and then turn to rotate in place. The rotation of the gear 302 will drive the reciprocating rod 305 to rotate, and the protective member 306 will move upward under the action of the threaded connection, exposing the flushing assembly 307, so as to facilitate the flushing of the flue 102 pipe wall at that location, so that the deposited slurry in the flue 102 at the entrance of the absorption tower 101 can be completely flushed into the absorption tower 101.

[0034] In summary, the device first scrapes the scale on the inner wall of the flue 102. If the scale cannot be removed by scraping, the flushing component 307 is started again to flush the pipe wall and then scrape it. The flushing frequency and range of the flue 102 are reduced, thereby reducing the rising speed of the absorption tower liquid level and avoiding the occurrence of uncontrollable absorption tower liquid level and demister differential pressure.

[0035] Example 2, reference Figures 1 to 9 , which is the second embodiment of the present invention, and is different from the first embodiment in that: it also includes a gear ring 201 including an outer gear ring 201a meshing on one side of the driving tooth 105, an inner gear ring 201b fixedly arranged on the inner side of the outer gear ring 201a, a plurality of groups of grooves 201c opened in a circumferential array at the bottom of the gear ring 201, and a limiting groove 201d opened at the top of the gear ring 201.

[0036] Furthermore, the clamping ring 202 includes a plurality of clamping posts 202a clamped with the clamping groove 201c, a sliding groove 202b opened on one side of the clamping ring 202, and a plurality of arc grooves 202c opened in a circumferential array at the bottom of the sliding groove 202b; The scraping assembly 203 includes a positioning member 203a movably mounted on the inner side of the arc groove 202c, a scraping member 203b fixedly mounted on the outer side of the positioning member 203a, and a connecting block 203c fixedly mounted on the inner side of the scraping member 203b.

[0037] Furthermore, the connecting frame 301 includes a slider 301a slidably disposed inside the limiting groove 201d, and a rotating shaft 301b hingedly disposed on one side of the slider 301a; The gear 302 includes a circular groove 302a extending through the inner side thereof, and a ratchet tooth 302b fixedly disposed on the circumference of the circular groove 302a. The snap ring 303 includes a snap-in plate 303 a movably embedded in the inner side of the circular groove 302 a and a ratchet pawl 303 b fixedly arranged on the circumference of the snap-in plate 303 a .

[0038] Furthermore, the clutch member 304 includes an upper tooth column 304a fixedly disposed at the bottom of the clamping plate 303a, a lower tooth column 304b disposed at the bottom of the upper tooth column 304a, and a first spring 304c fixedly disposed at the circumference of the upper tooth column 304a and the lower tooth column 304b; The reciprocating rod 305 includes a reciprocating groove 305a disposed on its rod body.

[0039] Furthermore, the positioning member 203a includes an arc block 203a-1 slidably disposed at the bottom of the arc groove 202c, a telescopic block 203a-2 disposed at the bottom of the arc block 203a-1, and a second spring 203a-3 fixedly disposed between the telescopic block 203a-2 and the arc block 203a-1.

[0040] Furthermore, the scraper 203b includes an arc-shaped plate 203b-1 arranged outside the second spring 203a-3, a U-shaped plate 203b-2 fixedly arranged outside the arc-shaped plate 203b-1, and a plurality of flushing grooves 203b-3 that are evenly spaced and penetrate the U-shaped plate 203b-2.

[0041] Furthermore, the protective member 306 includes a limit seat 306a threadedly connected to the reciprocating rod 305, and a protective cover 306b fixedly clamped on the outer side of the limit seat 306a.

[0042] Furthermore, the limiting seat 306a includes a limiting bearing 306a-1 threadedly connected to the reciprocating rod 305, and a claw 306a-2 fixedly disposed on the outer side of the limiting bearing 306a-1.

[0043] Furthermore, the flushing assembly 307 includes a water pipe 307a disposed inside the clamping claw 306a-2, flushing nozzles 307b fixedly disposed at one side of the water pipe 307a at equal intervals, and a throttle valve 307c disposed at the end of the water pipe 307a.

[0044] It should be noted that if Figure 3 and Figure 4 As shown, the outer toothed ring 201a outside the flue 102 meshes with the driving tooth 105 to provide a rotational driving force for the entire device. At the same time, a group of inner toothed rings 201b are fixedly welded on the inner side of the outer toothed ring 201a, and a circle of arc-shaped limit grooves 201d are opened on the upper end surface of the inner toothed ring 201b, and a plurality of groups of card slots 201c for connecting with the key slots of the card ring 202 are arranged in a circumferential array on the lower end surface of the inner toothed ring. The arc diameter of the slider 301a is consistent with the limit groove 201d, so that the slider 301a can be slidably engaged in the limit groove 201d. The bottom rotating shaft 301b of the slider 301a is hinged on the shaft end of the gear 302, so that the gear 302 can be attached to one side of the inner toothed ring 201b to prevent the device from affecting the normal circulation of the flue 102. Multiple groups of card slots 201c with equal spacing are opened on the bottom circumferential side of the inner toothed ring 201b. Similarly, the clamping ring 202 at the bottom of the inner gear ring 201b cooperates with these clamping grooves 201c through the clamping columns 202a thereon, thereby achieving fixed clamping. A set of sliding grooves 202b is provided on the inner side of the clamping ring 202 to provide connection notches for the cleaning component 203 at the bottom. In addition, multiple sets of arc grooves 202c are provided at equal intervals on the circumference of the clamping ring 202. The arc grooves 202c are inclined arc grooves, which are consistent with the structure of the arc block 203a-1 in the cleaning component 203, so that the cleaning component 203 can be connected and disconnected with the clamping ring 202 by embedding and sliding out of the arc grooves 202c.

[0045] Better, refer to Figure 4The scraper assembly 203 is composed of a positioning member 203a matched with the arc groove 202c, a scraper 203b outside the positioning member 203a, and a connecting block 203c that tightly clamps the scraper assembly 203 to the inner side of the clamping ring 202. The upper end of the connecting block 203c is fixedly clamped to the sliding groove 202b, and the bottom end is fixedly clamped to the scraper 203b, so that the scraper 203b is fixedly connected to one side of the clamping ring 202. Figure 6 and Figure 7 As shown, the scraper 203b is composed of an arc plate 203b-1 that is consistent with the arc of the flue 102, a U-shaped plate 203b-2 at the bottom of the arc plate 203b-1, and multiple groups of flushing grooves 203b-3 that run through the body of the U-shaped plate 203b-2. The plate arms on both sides of the U-shaped plate 203b-2 are attached to the pipe wall of the flue 102, and two groups of scrapers are welded on the plate arms on both sides of the U-shaped plate 203b-2. Under the revolution of the clamping ring 202, the plate arms of the U-shaped plate 203b-2 can scrape the flue 102, and the two groups of plate arms can improve the scraping completion.

[0046] Better, refer to Figure 6 As shown, a rectangular receiving groove is provided at the end of the arc plate 203b-1 (the end connected to the clamping ring 202), and the provided receiving groove can accommodate a set of positioning members 203a. The positioning member 203a is composed of an arc block 203a-1, a telescopic block 203a-2 at the bottom of the arc block 203a-1, and a second spring 203a-3 at the bottom of the telescopic block 203a-2. The bottom of the clamping ring 202 is provided with multiple groups of equally spaced arc grooves 202c, the shape of which is a vertical groove edge on one side and an inclined groove edge on the other side, and the arc block 203a-1 and the arc groove 202c have the same triangular structure. The telescopic block 203a-2, which is an integral structure with the arc block 203a-1, is slidably connected in the accommodating groove of the arc plate 203b-1, and a group of rectangular second springs 203a-3 are fixedly connected to the bottom of the telescopic block 203a-2, and the other side of the second spring 203a-3 is fixedly connected to the bottom of the accommodating groove of the arc plate 203b-1.

[0047] Under normal conditions, the second spring 203a-3 bounces the arc block 203a-1 upwards, allowing it to fit together with the arc groove 202c at the bottom of the clamping ring 202. When the clamping ring 202 rotates, the positioning member 203a positions the scraper 203b at the bottom of the clamping ring 202, allowing the scraper 203b to rotate with the clamping ring 202. If one side of the scraper 203b is subjected to a large extrusion force, the arc groove 202c and the arc block 203a-1 will cooperate to slide the end face, thereby squeezing the second spring 203a-3, allowing the telescopic block 203a-2 to shrink into the receiving groove of the arc plate 203b-1. Finally, the scraper 203b is embedded in and slides out of the arc groove 202c to achieve connection and disconnection with the ring gear 201.

[0048] Better, such as Figure 2 As shown, the connecting frame 301 limits the position of the gear 302, so that the gear 302 always fits on the side wall of the inner gear ring 201b. Figure 4 As shown, a group of circular grooves 302a are provided inside the gear 302, and a circle of ratchet teeth 302b are arrayed inside the circular grooves 302a, and a clamping disc 303a is clamped inside the gear 302. A group of ratchet pawls 303b are arranged outside the clamping disc 303a, and the ratchet pawls 303b cooperate with the ratchet teeth 302b, so that the clamping disc 303a can only rotate in one direction. The bottom of the clamping disc 303a is fixedly connected to the clutch 304 to avoid the movement conflict of the reciprocating rod 305 caused by the rotation of the clamping disc 303a. A group of limit seats 306a are connected to the outside of the rod body of the reciprocating rod 305, and a group of protective covers 306b are connected to the outside of the limit seats 306a. When the clamping disc 303a above the reciprocating rod 305 rotates, the reciprocating grooves 305a thereon will drive the limit seats 306a to move up and down.

[0049] Better, such as Figure 7 As shown, the limit seat 306a is composed of a limit bearing 306a-1 threadedly connected to the reciprocating rod 305, and a claw 306a-2 fixedly clamped on the outside of the limit bearing 306a-1. In addition, the two claws of the claw 306a-2 are slidably clamped on both sides of the U-shaped plate 203b-2 to limit the limit bearing 306a-1, so that the limit bearing 306a-1 can move up and down when the reciprocating rod 305 rotates. When the limit bearing 306a-1 moves up and down, it will drive the protective cover 306b to move, and when the limit bearing 306a-1 moves upward to the specified position, it will start the throttle valve 307c on one side of the water pipe 307a, open the valve port, and let the water flow inside the water pipe 307a flow to the flushing nozzle 307b to flush the pipe wall.

[0050] like Figure 5As shown, the clutch 304 is composed of an upper tooth column 304a and a lower tooth column 304b fixedly welded to the bottom of the clamping plate 303a, and a first spring 304c fixedly sleeved on the outer sides of the upper tooth column 304a and the lower tooth column 304b. The tooth column 304a and the lower tooth column 304b have the same structure, and the tooth surfaces are both arc-shaped. Under normal conditions, the gear 302 remains relatively still with the gear ring 201 and revolves around the gear ring 201. If the plate arm of the U-shaped plate 203b-2 is blocked by stubborn dirt, the U-shaped plate 203b-2 and the mechanism connected to the U-shaped plate 203b-2 are both limited at this moment and cannot revolve normally. The upper and lower ends of the U-shaped plate 203b-2 are both limited. When the gear ring 201 and the clamping ring 202 at the bottom are still rotating, the U-shaped plate 203b-2 cannot rotate, and the arc block 203a-1 is also limited because it is embedded in the groove of the arc plate 203b-1. Since the arc groove 202c and the arc block 203a-1 are triangular bevel grooves, the arc groove 202c of the circular array is continuously compressed during rotation, so that the inclined surface of the arc block 203a-1 and the arc groove 202c have alternating sliding friction. The arc block 203a-1 slides out of the notch of the arc groove 202c and enters the next notch. It will also slide out, and the notch cannot be clamped normally, causing the U-shaped plate 203b-2 and the clamping ring 202 to lose the connection function of maintaining the revolution, and the U-shaped plate 203b-2 stays here. At the same time, the gear 302 is unable to operate normally due to the action of the limit bearing 306a-1 on the bottom reciprocating rod 305 being clamped on both sides of the U-shaped plate 203b-2. The meshing drive rotation occurs here, and the clamping plate 303a on the inner side of the gear 302 will drive the clutch 304 and the reciprocating rod 305 to rotate, and the threaded limit bearing 306a-1 on the reciprocating rod 305 will rise, rolling up the protective cover 306b, exposing the flushing pipeline and using the sensor to open the throttle valve 307c. When the limit bearing 306a-1 moves to the top / close to the clutch 304, the U-shaped plate 203b-2 is still unable to revolve normally. If the limit bearing 306a-1 continues to rise, it will cause collision and extrusion. In order to avoid this situation, if Fig. 9As shown, the tooth surfaces of the upper tooth column 304a and the lower tooth column 304b are in the shape of arc grooves, which can allow the upper tooth column 304a and the lower tooth column 304b to slide relative to each other. Under normal circumstances, the upper tooth column 304a and the lower tooth column 304b are tightly fitted together under the action of the first spring 304c, and the lower tooth column 304b is slidably connected with the reciprocating rod 305 through the slot M and the positioning column N, and at this time, there is a certain gap between the end surface of the lower tooth column 304b and the end surface of the reciprocating rod 305. If the lower tooth column 304b is limited or the limit bearing 306a-1 rises to the top layer and causes the reciprocating rod 305 to lock, the first spring 304c will be continuously stretched, causing the upper tooth column 304a and the lower tooth column 304b to slip. During the downward movement of the lower tooth column 304b, the slot M will fall, allowing the positioning column N to further penetrate into the slot M, and the end surface of the lower tooth column 304b falls and fits the end surface of the reciprocating rod 305. Fig. 9The upper tooth column 304a and the lower tooth column 304b are shown in a disengaged state. Ensure that the lower tooth column 304b is sleeved on the reciprocating rod 305 and can slide up and down to prevent the reciprocating rod 305 from being affected by the slipping and oscillation of the lower tooth column 304b. After the upper tooth column 304a and the lower tooth column 304b rise to a position where they cannot rise, they will slip, stop driving the reciprocating rod 305 to rotate, and thus avoid the reciprocating rod 305 from moving in conflict due to the continuous rotation of the clamping plate 303a. The water pipe 307a is fixedly installed inside the protective cover 306b, and the multiple groups of flushing nozzles 307b installed linearly are all aligned with the U-shaped plate 203b-2, which is convenient for flushing the side wall of the flue 102. The throttle valve 307c is installed at the top position of the water pipe 307a. The throttle valve 307c has a sensor inside. The sensor is a prior art and can be a photoelectric switch sensor. Its light can be irradiated on the side of the limit shaft 306a-1, and the reflected light is received by the sensor again, and then the sensor controls the opening / closing of the throttle valve 307c. When the limit bearing 306a-1 passes through the position of the throttle valve 307c, the water pipe 307a can be opened or closed. Most of the water pipe 307a is wrapped inside the protective cover 306b. The protective cover 306b is made of flexible material, and the protective cover 306b is clamped on both sides of the limit bearing 306a-1. When the limit bearing 306a-1 rises / falls under the rotation of the reciprocating rod 305, the protective cover 306b can be folded up / dropped to cover the water pipe 307a. The protective cover 306b and the water pipe 307a are located at the side of the flue 102, but the path of the water pipe 307a at the top will extend to the inside of the axis of the flue 102 near the port of the flue 102, and be sealed and slidably connected with the vertical pipeline to the outside, and the whole is similar to a Z shape, so that the water pipe 307a can be connected to the external water flow pipeline more stably. After the flushing nozzle 307b flushes away the dirt, the two side plate arms of the U-shaped plate 203b-2 are not limited, the arc groove 202c and the arc block 203a-1 cannot slide displacedly, and the compressed second spring 203a-3 will push the arc block 203a-1 upward into the next arc groove 202c, and the U-shaped plate 203b-2 will continue to follow the clamping ring 202 to perform orbital motion. When the U-shaped plate 203b-2 is not limited, the elastic force of the second spring 203a-3 will lift the arc block 203a-1 and fit it tightly on the inclined surface of the arc groove 202c to form a clamping effect.

[0051] During use, the driving tooth 105 rotates by meshing the driving gear ring 201, so that the clamping ring 202 at the bottom thereof rotates. Under the positioning limit of the arc groove 202c at the bottom of the clamping ring 202 and the arc block 203a-1, the positioning member 203a drives the scraper 203b to revolve around the pipe wall of the flue 102, so that the two side plate arms of the U-shaped plate 203b-2 in the scraper 203b scrape the flue 102. While the scraper 203b can normally revolve with the clamping ring 202, the gear 302 inside the scraper 203b and the inner gear ring 201b remain stationary and revolve with it. The flushing component 307 cannot be started to flush the flue 102.

[0052] If the U-shaped plate 203b-2 cannot scrape off the dirt on the flue 102, the U-shaped plate 203b-2 is blocked by the dirt, which forms a limiting effect on it. The arc groove 202c and the arc block 203a-1 of the circular array are caused to slide in an inclined plane dislocation, and the arc block 203a-1 slides out of the notch of the arc groove 202c, and will also slide out when entering the next notch, and the notch cannot be clamped normally, causing the U-shaped plate 203b-2 to be unable to rotate with the clamping ring 202. And when the U-shaped plate 203b-2 is limited, the claw 306a-2 will also limit the reciprocating rod 305 and the structure thereon. In this way, the gear 302 and the inner gear ring 201b cannot revolve coaxially with it, and the inner gear ring 201b drives the gear 302 to rotate in place, and the clamping plate 303a will drive the reciprocating rod 305 to rotate. As the reciprocating rod 305 rotates, the limit bearing 306a-1 originally close to the connecting ring 204 starts to move upward, and at the same time rolls up the protective cover and moves upward. When it moves to the upper position, the throttle valve 307c is also closed through the sensor, allowing the flushing nozzle 307b to flush the wall of the flue 102 at that location through the flushing groove 203b-3.

[0053] After flushing, the stubborn dirt is washed away by the flushing nozzle 307b, so that the U-shaped plate 203b-2 is released from the limiting effect and can revolve with the ring gear 201. The gear 302 remains stationary with the inner ring gear 201b again and revolves with it. After the gear 302 cannot rotate, the reciprocating rod 305 loses the rotational driving force, and the pitch on the reciprocating rod 305 is large and cannot be self-locked, which will cause the limiting bearing 306a-1 at the bottom to lack the driving force to move upward, and it will fall under the self-weight of the limiting bearing 306a-1 and the protective cover 306b, and reverse and fall back. During the reversal and fall of the reciprocating rod 305, the one-way transmission of the ratchet 302b and the pawl 303b does not limit the reversal of the reciprocating rod 305. When the reciprocating rod 305 does not rotate with the gear 302, the lower tooth column 304b in the clutch 304 will not be limited by the reciprocating rod 305, so that the lower tooth column 304b rises under the action of the first spring 304c and fits the arc surface of the upper tooth column 304a, allowing the clamping plate 303a and the reciprocating rod 305 to transmit power. The ratchet 303b welded on the outer circumference of the clamping plate 303a begins to reverse with the reciprocating rod 305, causing the ratchet 303b to reverse and unable to engage with the ratchet 302b, and the clamping plate 303a is free to reverse with the reciprocating rod 305 under the action of the reciprocating rod 305. At the same time, during the falling process of the limit bearing 306a-1, the throttle valve 307c closes the valve port under the action of the internal sensor, stops the flushing nozzle 307b from flushing the flue 102 pipe wall, and the falling protective cover 306b wraps up the device to reduce the impact of smoke.

[0054] In summary, with the setting of the scraping unit 200 and the flushing unit 300, this device effectively realizes the cleaning and flushing of the scale on the inner wall of the flue 102. The gear ring 201 first drives the scraper 203b to revolve along the flue wall, and the U-shaped plate 203b-2 is initially scraped. In the face of stubborn scale, the U-shaped plate is automatically triggered to disconnect after being blocked, and the reciprocating rod 305 is started. The throttle valve 307c is closed through sensor control, and the flushing nozzle 307b is activated for fixed-point flushing. The frequency and range of flushing of the flue 102 are significantly reduced, the rise of the liquid level of the absorption tower 101 is effectively slowed down, the problem of liquid level out of control and excessive differential pressure of the demister is prevented, the stability and safety of the flue gas desulfurization system are improved, and the purpose of water saving and environmental protection is achieved.

[0055] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An absorption tower flue inlet flushing device, characterized in that: include, A basic unit (100) comprises an absorption tower (101), a flue (102) obliquely arranged on one side of the absorption tower (101), a connecting seat (103) fixedly sleeved on the outside of the flue (102), a motor (104) fixedly arranged on the connecting seat (103), and a driving tooth (105) arranged at the output end of the motor (104); The scraping unit (200) comprises a gear ring (201) slidably engaged with the circumference of the flue (102), a clamping ring (202) fixedly disposed at the bottom of the gear ring (201), a scraping assembly (203) disposed at the bottom of the clamping ring (202), and a connecting ring (204) fixedly disposed at the bottom of the scraping assembly (203); The flushing unit (300) comprises a connecting frame (301) arranged on the inner side of the gear ring (201), a gear (302) arranged at the bottom of the connecting frame (301), a retaining ring (303) arranged on the inner side of the gear (302), a clutch (304) arranged at the bottom of the retaining ring (303), a reciprocating rod (305) arranged at the bottom of the clutch (304), a protective member (306) arranged on the reciprocating rod (305), and a flushing assembly (307) arranged on one side of the protective member (306).

2. The absorption tower flue inlet flushing device according to claim 1, characterized in that: The gear ring (201) comprises an outer gear ring (201a) meshed with one side of the driving tooth (105), an inner gear ring (201b) fixedly arranged on the inner side of the outer gear ring (201a), a plurality of groups of slots (201c) arranged in a circumferential array at the bottom of the gear ring (201), and a limiting slot (201d) arranged at the top of the gear ring (201).

3. The absorption tower flue inlet flushing device according to claim 2, characterized in that: The clamping ring (202) comprises a plurality of clamping columns (202a) clamped with the clamping groove (201c), a sliding groove (202b) opened on one side of the clamping ring (202), and a plurality of arc grooves (202c) opened in a circular array at the bottom of the sliding groove (202b); The scraping assembly (203) comprises a positioning member (203a) movably clamped and arranged on the inner side of the arc-shaped groove (202c), a scraping member (203b) fixedly arranged on the outer side of the positioning member (203a), and a connecting block (203c) fixedly arranged on the inner side of the scraping member (203b).

4. The absorption tower flue inlet flushing device according to claim 3, characterized in that: The connecting frame (301) comprises a sliding block (301a) slidably arranged inside the limiting groove (201d), and a rotating shaft (301b) hingedly arranged on one side of the sliding block (301a); The gear (302) comprises a circular groove (302a) penetrating the inner side thereof, and a ratchet tooth (302b) fixedly arranged on the circumference of the circular groove (302a); The snap ring (303) comprises a snap-on disc (303a) movably embedded inside the circular groove (302a) and a ratchet (303b) fixedly arranged on the circumference of the snap-on disc (303a).

5. The absorption tower flue inlet flushing device according to claim 4, characterized in that: The clutch member (304) comprises an upper tooth post (304a) fixedly arranged at the bottom of the clamping plate (303a), a lower tooth post (304b) arranged at the bottom of the upper tooth post (304a), and a first spring (304c) fixedly arranged at the circumference of the upper tooth post (304a) and the lower tooth post (304b); The reciprocating rod (305) comprises a reciprocating groove (305a) arranged on its rod body.

6. The absorption tower flue inlet flushing device according to claim 5, characterized in that: The positioning member (203a) comprises an arc block (203a-1) slidably arranged at the bottom of the arc groove (202c), a telescopic block (203a-2) arranged at the bottom of the arc block (203a-1), and a second spring (203a-3) fixedly arranged between the telescopic block (203a-2) and the arc block (203a-1).

7. The absorption tower flue inlet flushing device according to claim 6, characterized in that: The scraper (203b) comprises an arc-shaped plate (203b-1) arranged outside the second spring (203a-3), a U-shaped plate (203b-2) fixedly arranged outside the arc-shaped plate (203b-1), and a plurality of flushing grooves (203b-3) that are evenly spaced and penetrate the U-shaped plate (203b-2).

8. The absorption tower flue inlet flushing device according to claim 7, characterized in that: The protective member (306) comprises a limit seat (306a) threadedly connected to the reciprocating rod (305), and a protective cover (306b) fixedly clamped on the outside of the limit seat (306a).

9. The absorption tower flue inlet flushing device according to claim 8, characterized in that: The limiting seat (306a) comprises a limiting bearing (306a-1) threadedly connected to the reciprocating rod (305), and a clamping claw (306a-2) fixedly arranged on the outside of the limiting bearing (306a-1).

10. The absorption tower flue inlet flushing device according to claim 9, characterized in that: The flushing assembly (307) comprises a water pipe (307a) arranged inside the clamping claw (306a-2), flushing nozzles (307b) fixedly arranged at equal intervals on one side of the water pipe (307a), and a throttle valve (307c) arranged at the end of the water pipe (307a).

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