High efficiency water film dust removal system

Abstract

The utility model discloses a kind of efficient water film dust removal systems, including cylinder, circulating assembly and spraying assembly;The bottom of cylinder is equipped with hopper;Spraying assembly includes overflow structure, first water inlet pipe and second water inlet pipe, overflow structure includes first overflow tank and second overflow tank;The overflow gap between first overflow tank and cylinder is less than the overflow gap between second overflow tank and cylinder;First water inlet pipe end extends to first overflow tank inside through cylinder, and second water inlet pipe end extends to second overflow tank inside through cylinder;Circulating assembly sedimentation tank and circulating pump, the bottom of hopper is equipped with blow-off pipe, blow-off pipe end connects sedimentation tank input end, and the output end of sedimentation tank is connected with first water inlet pipe and second water inlet pipe by circulating pump.The efficient water film dust removal system of the utility model is conducive to improving water film thickness by the effect of two layers of overflow tank, improves the capture efficiency of dust particle by water film.

Description

Technical Field

[0001] This utility model relates to the field of water film dust removal equipment, and in particular to a high-efficiency water film dust removal system. Background Technology

[0002] The spray structure is the core component of a water film dust collector. Its main function is to form a water film on the inner wall of the collector's cylinder to capture dust particles in the flue gas. Conventional vertical cyclone water film dust collectors use an overflow trough to form a water film by either overflowing or spraying water onto the inner wall of the cylinder. The overflow method produces a more uniform and complete water film, but it requires a high degree of levelness in the equipment; otherwise, the water film thickness will be uneven. The spray method, on the other hand, is prone to nozzle clogging, and the water film is not as uniform as that formed by overflow.

[0003] The water film generated by the existing overflow tank may be thinner on one side due to the influence of water volume and equipment levelness. A thinner water film is not effective in capturing dust particles. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a high-efficiency water film dust removal system. The two-layer overflow trough helps to increase the thickness of the water film and improve the efficiency of the water film in capturing dust particles.

[0005] The technical solution of this utility model is as follows:

[0006] A high-efficiency water film dust removal system includes:

[0007] The cylindrical body has a smoke outlet at the top and a smoke inlet at the bottom of the side wall; the bottom of the cylindrical body is equipped with an ash hopper.

[0008] A spray assembly includes an overflow structure, a first inlet pipe, and a second inlet pipe. The overflow structure includes a first overflow trough and a second overflow trough with identical structures. The first overflow trough is located at the top inner side of the cylinder, and the second overflow trough is located at the bottom of the first overflow trough. The overflow gap between the first overflow trough and the cylinder is smaller than the overflow gap between the second overflow trough and the cylinder. The end of the first inlet pipe extends through the cylinder into the first overflow trough, and the end of the second inlet pipe extends through the cylinder into the second overflow trough.

[0009] The system includes a circulation assembly, a sedimentation tank, and a circulation pump. The bottom of the ash hopper is equipped with a drain pipe, the end of which is connected to the input end of the sedimentation tank. The output end of the sedimentation tank is connected to the first inlet pipe and the second inlet pipe via the circulation pump.

[0010] In a further technical solution, the overflow structure includes an inner ring wall, an outer ring wall, a bottom ring, and a top ring. The outer ring wall is located outside the inner ring wall, with its bottom side flush with the inner ring wall. The top side of the inner ring wall is higher than the outer ring wall. The bottom ring is connected to the bottom side of the inner ring wall on its inner side and to the bottom side of the outer ring wall on its outer side, forming an annular water trough. The top ring is located on the top side of the inner ring wall.

[0011] In a further technical solution, the outer side of the top ring of the first overflow tank is connected to the inner wall of the cylinder, and a connecting rod is provided between the bottom of the first overflow tank and the top of the second overflow tank; the second water inlet pipe passes through the side wall of the cylinder at the top of the first overflow tank, bypasses the inner side of the inner ring wall of the first overflow tank and extends through the inner ring wall of the second overflow tank into the second overflow tank.

[0012] In a further technical solution, the bottom of the outer ring wall of the overflow structure is provided with an annular and downwardly inclined side; the overflow gap is the gap between the bottom side of the inclined side and the inner wall of the cylinder.

[0013] A further technical solution also includes a cleaning assembly, which comprises a support frame, a rotating mechanism, and a cleaning device. The support frame is located on the top inner side of the ash hopper; the rotating mechanism is located on the support frame; the cleaning device includes a connecting frame, a first scraper, and a second scraper. The first and second scrapers are evenly distributed circumferentially on the connecting frame and are parallel to the inclined inner wall of the ash hopper; the first scraper comprises two pieces, each with scraping teeth on one side in its forward direction, and the scraping teeth of the two first scrapers are staggered; the second scraper has a scraper blade on one side in its forward direction, which can fit against the inclined inner wall of the ash hopper.

[0014] In a further technical solution, the support frame includes a support platform and a support rod. The support platform has a through hole in the middle, and the support rod is arranged around the edge of the support platform. The end of the support rod is connected to the inner wall of the ash hopper.

[0015] In a further technical solution, the rotating mechanism includes a motor, a reducer, a rotating shaft, and a waterproof shell. The motor is connected to the reducer and is located on the top of the support platform. The rotating shaft is connected to the reducer, and its end rotates through a through hole to connect with the connecting frame. The waterproof shell is fitted over the outside of the motor and the reducer, and its bottom edge is sealed to the support platform.

[0016] In a further technical solution, the connecting frame includes a connecting sleeve, a first connecting rod, and a second connecting rod. The connecting sleeve is sleeved on the outside of the rotating shaft. The two ends of the first connecting rod are respectively connected to the connecting sleeve and the first scraper, and the two ends of the second connecting rod are respectively connected to the connecting sleeve and the second scraper.

[0017] In a further technical solution, the cleaning device also includes a spray pipe, which includes an input pipe extending to the outside of the ash hopper and multiple nozzles.

[0018] In a further technical solution, the ash hopper is located at the bottom of the support frame and has a support ring on the inner wall of the first scraper and the second scraper. The spray pipe is annular and is mounted on the support ring. The spray nozzle is set towards the inclined inner wall of the ash hopper.

[0019] The beneficial effects of this utility model are:

[0020] 1. The structure of a double-layer overflow trough is adopted. On the basis of the thin water film formed in the first overflow trough, the structure of the second overflow trough with a wider overflow gap is used to further supplement the water film generated in the first overflow trough, thereby generating a water film with sufficient thickness, improving the capture efficiency of the water film for dust particles, and reducing the impact of the cylinder levelness.

[0021] 2. The water after water film dust removal can enter the sedimentation tank through the sewage pipe for simple separation treatment, and then be used to feed water into the overflow tank through the first water inlet pipe. The overflow tank is not easy to be blocked and is convenient for recycling.

[0022] 3. The first and second water inlet pipes enter the cylinder from a position higher than the water film, without interfering with the water film, which facilitates the formation of a continuous and complete water film;

[0023] 4. The rotating mechanism is mounted inside the ash hopper via a support frame. This position is lower than the flue gas inlet of the water film dust collector. Without affecting the use of the water film dust collector, it drives the first and second scrapers to clean the hardened ash on the inner wall of the ash hopper. During cleaning, the scraper teeth are mainly responsible for breaking the loose and harder ash. The scraper blades of the second scraper push the ash down, which helps the broken ash fall to the bottom of the ash hopper under gravity, making it easy to discharge and saving manpower to a great extent.

[0024] 5. The spray pipe can spray water to rinse the ash hopper. Harder ash can be softened by spraying and soaking, which will further facilitate the scraping work of the first and second scrapers. After scraping, water can be sprayed to rinse the ash residue remaining on the inner wall of the ash hopper. Attached Figure Description

[0025] Figure 1 This is a connection diagram of the high-efficiency water film dust removal system described in this embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the spray assembly inside the cylinder according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the overflow tank described in an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the ash hopper cleaning component described in this embodiment of the utility model;

[0029] Figure 5 This is a top view schematic diagram of the cleaning device described in an embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Cylinder body; 11. Smoke outlet; 12. Smoke inlet; 13. Sewage pipe; 20. Ash hopper; 21. Support ring; 22. Sewage cleaning door; 23. Coarse filter screen; 31. First water inlet pipe; 32. Second water inlet pipe; 33. First overflow trough; 34. Second overflow trough; 35. Inner ring wall; 36. Outer ring wall; 37. Bottom ring; 38. Top ring; 39. Bevel; 40. Connecting rod; 51. Sedimentation tank; 52. Circulation pump; 53. T-joint; 61. Support platform; 62. Support rod; 71. Motor; 72. Reducer; 73. Rotating shaft; 74. Waterproof shell; 81. Connecting sleeve; 82. First connecting rod; 83. Second connecting rod; 84. First scraper; 85. Second scraper; 86. Scraper teeth; 87. Scraper blade; 91. Spray pipe; 92. Input pipe; 93. Spray head. Detailed Implementation

[0032] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0033] Example:

[0034] like Figures 1-3As shown, a high-efficiency water film dust removal system includes a cylinder 10, a circulation assembly, and a spray assembly. The cylinder 10 has a smoke outlet 11 at the top and a smoke inlet 12 at the bottom of its side wall. A dust hopper 20 is located at the bottom of the cylinder 10. The spray assembly includes an overflow structure, a first inlet pipe 31, and a second inlet pipe 32. The overflow structure includes a first overflow trough 33 and a second overflow trough 34 with identical structures. The first overflow trough 33 is located at the top inner side of the cylinder 10, and the second overflow trough 34 is located at the bottom of the first overflow trough 33. The overflow structure includes an inner ring wall 35, an outer ring wall 36, a bottom ring 37, and a top ring 38. The outer ring wall 36 is located outside the inner ring wall 35, with its bottom side flush with the inner ring wall 35, and its top side higher than the outer ring wall 36. The bottom ring 37 connects to the bottom side of the inner ring wall 35 on its inner side and to the bottom side of the outer ring wall 36 on its outer side, forming an annular water trough. The top ring 38 is located on the top side of the inner ring wall 35. The bottom of the outer ring wall 36 of the overflow structure has an annular and downwardly sloping edge 39 at its outer bottom. The first overflow trough 33 and the cylinder... The overflow gap between the bodies 10 is smaller than the overflow gap between the second overflow trough 34 and the cylinder 10; the overflow gap is the gap between the bottom side of the inclined side 39 and the inner wall of the cylinder 10; the outer side of the top ring 38 of the first overflow trough 33 is connected to the inner wall of the cylinder 10; a connecting rod 40 is provided between the bottom of the first overflow trough 33 and the top of the second overflow trough 34; the second inlet pipe 32 passes through the side wall of the cylinder 10 at the top of the first overflow trough 33, bypasses the inner side of the inner ring wall 35 of the first overflow trough 33 and passes through the second overflow trough. The inner ring wall 35 of 34 extends into the second overflow tank 34; the first inlet pipe 31 and the second inlet pipe 32 enter the cylinder 10 from above the water film, without interfering with the water film, which facilitates the formation of a continuous and complete water film; the circulation components include a sedimentation tank 51 and a circulation pump 52, and a sewage pipe 13 is provided at the bottom of the ash hopper 20. The end of the sewage pipe 13 is connected to the input end of the sedimentation tank 51. After the output end of the sedimentation tank 51 is connected to the circulation pump 52, it can be connected to the first inlet pipe 31 and the second inlet pipe 32 through a three-way connector 53.

[0035] The working principle of the above technical solution is as follows:

[0036] In use, clean water can be initially added to the sedimentation tank 51. Water is continuously injected into the first overflow trough 33 and the second overflow trough 34 by the circulation pump 52 to keep the high water level of the first overflow trough 33 and the second overflow trough 34 in an overflow state. Since the overflow gap of the second overflow trough 34 is wider than that of the first overflow trough 33, the water film formed by the first overflow trough 33 can combine with the water film of the second overflow trough 34 to form a stable water film with a larger thickness. Dust-laden flue gas enters from the flue gas inlet 12 of the cylinder 10, rotates and rises inside the cylinder 10, and is thrown against the inner wall of the cylinder 10 under centrifugal force, impacting the water film. The water film can efficiently capture dust particles in the flue gas and carry the dust particles to the ash hopper 20. Finally, it enters the sedimentation tank 51 for sedimentation treatment through the sewage pipe 13. The treated water is driven by the circulation pump 52 to enter the next round of spray circulation.

[0037] In another embodiment, such as Figure 4-5 As shown, the system also includes a cleaning assembly, which includes a support frame, a rotating mechanism, and a cleaning device. The support frame is located on the top inner side of the ash hopper 20 and includes a support platform 61 and a support rod 62. The support platform 61 has a through hole in its center, and the support rod 62 is located around the edge of the support platform 61, with its end connected to the inner wall of the ash hopper 20. The rotating mechanism is located on the support frame and includes a motor 71, a reducer 72, a rotating shaft 73, and a waterproof shell 74. The motor 71 is connected to the reducer 72 and is located on the top of the support platform 61. The rotating shaft 73 is connected to the reducer 72, and its end rotates through the through hole to connect with the connecting frame. The waterproof shell 74 is fitted over the motor 71 and the reducer 72, and its bottom edge is sealed to the support platform 61. The cleaning device includes a connecting frame, a first scraper 84, and a second scraper 85. The connecting frame includes a connecting sleeve 81. A first connecting rod 82 and a second connecting rod 83 are connected, and a connecting sleeve 81 is sleeved on the outside of the rotating shaft 73. The two ends of the first connecting rod 82 are connected to the connecting sleeve 81 and the first scraper 84, respectively. The two ends of the second connecting rod 83 are connected to the connecting sleeve 81 and the second scraper 85, respectively. The first scraper 84 includes two scrapers, each with a scraper tooth 86 on one side in the forward direction. The scraper teeth 86 of the two first scraper 84 are staggered. The second scraper 85 has a scraper blade 87 on one side in the forward direction, which can fit against the inclined inner wall of the ash hopper 20. The scraper blade 87 can be made of polyurethane. The first scraper 84 and the second scraper 85 are evenly distributed circumferentially on the outside of the connecting sleeve 81 through the first connecting rod 82 and the second connecting rod 83, and are parallel to the inclined inner wall of the ash hopper 20. A cleaning door 22 can be provided on one side of the bottom of the ash hopper 20, and a coarse filter screen 23 can be provided at the connection between the bottom of the ash hopper 20 and the drain pipe 13.

[0038] When the ash hopper 20 needs to be cleaned, the starting motor 71 drives the rotating shaft 73 to rotate after being reduced in speed by the reducer 72. This causes the first scraper 84 and the second scraper 85 on the connecting frame to rotate. As the first scraper 84 rotates along the inclined inner wall of the ash hopper 20, the scraper teeth 86 squeeze and break the harder ash. The two first scraper 84 with staggered scraper teeth 86 can scrape and break the ash. The scraper blades 87 of the second scraper 85 then push the ash down. The broken ash falls to the bottom of the ash hopper 20 under the action of gravity. The coarse filter screen 23 can block large pieces of ash, making it easy to open the cleaning door 22 and discharge it, thus saving manpower to a great extent.

[0039] In another embodiment, such as Figure 4As shown, the cleaning device also includes a spray pipe 91, which includes an input pipe 92 extending to the outside of the ash hopper 20 and a plurality of nozzles 93. The ash hopper 20 is located at the bottom of the support frame and is provided with a support ring 21 on the inner wall of the first scraper 84 and the second scraper 85. The spray pipe 91 is annular and is mounted on the support ring 21. The nozzles 93 are arranged facing the inclined inner wall of the ash hopper 20.

[0040] The entire process of cleaning the spray pipe 91 can be connected to a water source through the input pipe 92 to rinse the ash hopper 20. Harder ash can be softened by spraying and soaking, which further facilitates the scraping work of the first scraper 84 and the second scraper 85. After scraping, water can be sprayed to rinse the ash residue remaining on the inner wall of the ash hopper 20.

[0041] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A high-efficiency water film dust removal system, characterized in that, include: Cylinder, circulation assembly, and spray assembly; The cylindrical body has a smoke outlet at the top and a smoke inlet at the bottom of the side wall; the bottom of the cylindrical body is equipped with an ash hopper. A spray assembly includes an overflow structure, a first inlet pipe, and a second inlet pipe. The overflow structure includes a first overflow trough and a second overflow trough with identical structures. The first overflow trough is located at the top inner side of the cylinder, and the second overflow trough is located at the bottom of the first overflow trough. The overflow gap between the first overflow trough and the cylinder is smaller than the overflow gap between the second overflow trough and the cylinder. The end of the first inlet pipe extends through the cylinder into the first overflow trough, and the end of the second inlet pipe extends through the cylinder into the second overflow trough. The system includes a circulation assembly, a sedimentation tank, and a circulation pump. The bottom of the ash hopper is equipped with a drain pipe, the end of which is connected to the input end of the sedimentation tank. The output end of the sedimentation tank is connected to the first inlet pipe and the second inlet pipe via the circulation pump.

2. The high-efficiency water film dust removal system according to claim 1, characterized in that, The overflow structure includes an inner ring wall, an outer ring wall, a bottom ring, and a top ring. The outer ring wall is located outside the inner ring wall, and the bottom side of the outer ring wall is flush with the inner ring wall. The top side of the inner ring wall is higher than the outer ring wall. The inner side of the bottom ring is connected to the bottom side of the inner ring wall, and the outer side is connected to the bottom side of the outer ring wall, forming an annular water trough. The top ring is located on the top side of the inner ring wall.

3. The high-efficiency water film dust removal system according to claim 2, characterized in that, The outer side of the top ring of the first overflow trough is connected to the inner wall of the cylinder; a connecting rod is provided between the bottom of the first overflow trough and the top of the second overflow trough; the second water inlet pipe passes through the side wall of the cylinder at the top of the first overflow trough, goes around the inner side of the inner ring wall of the first overflow trough and passes through the inner ring wall of the second overflow trough to extend into the second overflow trough.

4. The high-efficiency water film dust removal system according to claim 2, characterized in that, The outer bottom of the outer ring wall of the overflow structure is provided with an annular and downwardly inclined edge; the overflow gap is the gap between the bottom side of the inclined edge and the inner wall of the cylinder.

5. The high-efficiency water film dust removal system according to claim 1, characterized in that, It also includes a cleaning assembly, which comprises a support frame, a rotating mechanism, and a cleaning device. The support frame is located on the top inner side of the ash hopper; the rotating mechanism is located on the support frame; the cleaning device includes a connecting frame, a first scraper, and a second scraper. The first and second scrapers are evenly distributed circumferentially on the connecting frame and are parallel to the inclined inner wall of the ash hopper; there are two first scrapers, each with scraping teeth on one side in its forward direction, and the scraping teeth of the two first scrapers are staggered; the second scraper has a scraper blade on one side in its forward direction, which can fit against the inclined inner wall of the ash hopper.

6. The high-efficiency water film dust removal system according to claim 5, characterized in that, The support frame includes a support platform and a support rod. The support platform has a through hole in the middle. The support rod is arranged around the edge of the support platform and the end of the support rod is connected to the inner wall of the ash hopper.

7. The high-efficiency water film dust removal system according to claim 6, characterized in that, The rotating mechanism includes a motor, a reducer, a rotating shaft, and a waterproof shell. The motor is connected to the reducer and is located on the top of the support platform. The rotating shaft is connected to the reducer, and its end rotates through a through hole to connect with the connecting frame. The waterproof shell is fitted over the outside of the motor and the reducer, and its bottom edge is sealed to the support platform.

8. The high-efficiency water film dust removal system according to claim 7, characterized in that, The connecting frame includes a connecting sleeve, a first connecting rod, and a second connecting rod. The connecting sleeve is sleeved on the outside of the rotating shaft. The two ends of the first connecting rod are respectively connected to the connecting sleeve and the first scraper. The two ends of the second connecting rod are respectively connected to the connecting sleeve and the second scraper.

9. The high-efficiency water film dust removal system according to claim 5, characterized in that, The cleaning device also includes a spray pipe, which has an input pipe extending to the outside of the ash hopper and multiple nozzles.

10. The high-efficiency water film dust removal system according to claim 9, characterized in that, The ash hopper is located at the bottom of the support frame and has a support ring on its inner side wall, which is higher than the first scraper and the second scraper. The spray pipe is annular and is mounted on the support ring. The spray nozzle is set towards the inclined inner wall of the ash hopper.

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