Power station boiler dust removal device

Abstract

The utility model relates to the technical field of power plant boiler dust removal, and discloses a power plant boiler dust removal device which comprises a dust removal box, supporting legs fixed to the four corners of the surface of the dust removal box and a filter screen arranged in the dust removal box and used for filtering smoke. The output end of the fan is fixedly communicated with one side of the dust removal box; according to the power plant boiler dust removal device, in the flue gas dust removal process, impurity filtering is conducted through the filter screen, fine dust particles can be further captured in a water mist dust removal mode, dust in flue gas can be more effectively taken out through combination of the filter screen and the water mist dust removal mode, and the dust removal effect is improved; meanwhile, sulfur harmful substances in the flue gas can be removed by a sulfur removal agent in the water mist, so that the flue gas discharge quality is improved, the pollution to the environment is reduced, dust particles precipitated in the water mist do not need to be cleaned manually, the labor intensity of workers is relieved, and the using effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal for power plant boilers, in particular to a dust removal device for power plant boilers. Background Art

[0002] At present, power plant boiler dust removal and purification devices usually have multiple sets of different filtering structures inside the device. Then, the air inlet of the device is opened, and the flue gas discharged from the power plant boiler enters the interior of the device and passes through the filtering structure to remove dust and purify particles in the flue gas. After the flue gas is purified, the treated flue gas is discharged. This is a common way to use power plant boiler dust removal and purification devices;

[0003] The power plant boiler dust removal device used on the market removes harmful substances and dust from the flue gas through a filtering structure. However, the discharged flue gas contains harmful sulfur components, which cannot be purified by just the filtering structure. In addition, the dust removal effect is not good, and a small amount of dust will still be discharged. Moreover, the dust filtered by the dust removal is not discharged unchanged and needs to be manually cleaned, which reduces the effectiveness of the device. Therefore, we proposed a power plant boiler dust removal device to solve the above problems. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides a power plant boiler dust removal device, which solves the problem that the power plant boiler dust removal devices currently used on the market remove harmful substances and dust from the flue gas through a filtering structure. However, the discharged flue gas contains harmful components such as sulfur, which cannot be purified by the filtering structure alone. Moreover, the dust removal effect is poor, and a small amount of dust will still be discharged. Moreover, the dust filtered by the dust removal is not discharged unchanged, and manual cleaning is required, which reduces the use effect of the device.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A power plant boiler dust removal device includes a dust removal box, legs fixed at the four corners of the dust removal box surface, and a filter screen arranged inside the dust removal box for filtering flue gas, a fan is installed at one end of the dust removal box, and the output end of the fan is fixedly connected to one side of the dust removal box;

[0006] A liquid storage tank is provided on the ground on one side of the dust removal box, and a water pump for extracting liquid is installed on the top of the liquid storage tank;

[0007] A drain pipe is fixed to the output end of the water pump, and a water mist nozzle is fixed to the other end of the drain pipe;

[0008] A scraper is provided inside the dust removal box;

[0009] A strip-shaped sewage outlet is provided on the lower surface of the dust removal box, a frame cover is fixed on the surface of the dust removal box at the position of the strip-shaped sewage outlet, and a sealing fan is provided in the frame cover;

[0010] The dust removal box is equipped with a transmission mechanism, which can drive the scraper to scrape off the dust particles deposited inside the dust removal box and drive the sealing fan to discharge the dust particles collected in the frame cover.

[0011] Preferably, a water pump is fixed to the input end of the water pump, one end of the water pump passes through the liquid storage tank and extends to the inner bottom of the liquid storage tank. The top of the dust removal box is fixedly connected to an annular cover, and the water mist nozzle is installed on the inner wall of the annular cover.

[0012] Preferably, the scraper is provided with a blade angle structure on a side close to the dust removal box, and the scraper is in contact with the inner wall of the dust removal box.

[0013] Preferably, the transmission mechanism includes a servo motor fixedly mounted on one side of the dust removal box through a support plate, a spur gear 1 fixed to the output end of the servo motor, and a spur gear 2 meshing with the surface of the spur gear 1;

[0014] A connecting rod is rotatably connected to the center of one side of the dust removal box through a bearing, the second spur gear is fixed to one end of the connecting rod, and the other end of the connecting rod is fixed to the surface of the scraper.

[0015] Preferably, the transmission mechanism also includes sprocket 2 fixed to the output end of the servo motor, sprocket 1 fixed to one end of the blocking fan by screws, and a chain meshed between sprocket 1 and sprocket 2. The two end surfaces of the blocking fan are rotatably connected through bearings and frame covers.

[0016] Preferably, an annular baffle is fixed to the inner wall of the dust removal box, and the filter is arranged on one side of the annular baffle. The surface of the dust removal box close to the filter is threadedly connected with multiple groups of limiting bolts arranged equidistantly in a ring through threaded holes, and the filter can be blocked and limited by the limiting bolts.

[0017] Beneficial effects

[0018] The utility model provides a dust removal device for power plant boilers. Compared with the existing technology, it has the following beneficial effects:

[0019] The power plant boiler dust removal device, during the flue gas dust removal process, not only filters impurities through the filter, but also uses water mist dust removal to further capture fine dust particles. The combination of the two can more effectively remove dust from the flue gas and improve the dust removal effect. At the same time, the desulfurizer in the water mist can remove harmful sulfur substances in the flue gas, thereby improving the quality of flue gas emissions and reducing pollution to the environment. At the same time, the dust particles precipitated by the water mist do not need to be manually cleaned, which reduces the labor intensity of the staff and improves the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0022] Figure 3 This is a cross-sectional view of the frame cover structure of the utility model;

[0023] Figure 4 This is a partial cross-sectional view of the dust removal box structure of the present utility model.

[0024] In the figure: 101, dust removal box; 102, support leg; 103, fan; 104, liquid storage tank; 105, water pump; 106, suction pipe; 107, drain pipe; 108, annular cover; 109, water mist nozzle; 110, filter screen; 111, annular baffle; 112, limit bolt; 113, strip sewage outlet; 114, scraper; 115, frame cover; 116, blocking fan; 2, transmission mechanism; 201, servo motor; 202, spur gear 1; 203, spur gear 2; 204, sprocket 1; 205, chain; 206, sprocket 2; 207, connecting rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1 As shown:

[0027] A dust removal device for a power plant boiler includes a dust removal box 101, support legs 102 fixed at four corners of the surface of the dust removal box 101, and a filter screen 110 arranged inside the dust removal box 101 for filtering flue gas.

[0028] In this embodiment: In order to solve the technical problems existing in the prior art, as disclosed in the background technology above, "the power plant boiler dust removal device used on the market removes harmful substances and dust in the flue gas through a filtering structure, but the discharged flue gas contains harmful components such as sulfur, which cannot be purified by just using a filtering structure, and the dust removal effect is not good, and a small amount of dust will still be discharged, and the dust filtered by the dust removal is not discharged unchanged, and manual cleaning is required, which reduces the use effect of the device." In terms of use, this problem is obviously a real problem that exists and is relatively difficult to solve. The electrical equipment involved in this product is all powered by an external power supply.

[0029] More specifically:

[0030] like Figures 1-4 As shown:

[0031] In combination with the above content: a fan 103 is installed at one end of the dust removal box 101, and the output end of the fan 103 is fixedly connected to one side of the dust removal box 101;

[0032] A liquid storage tank 104 is provided on the ground at one side of the dust removal box 101, and a water pump 105 for extracting liquid is installed on the top of the liquid storage tank 104;

[0033] A drain pipe 107 is fixed to the output end of the water pump 105, and a water mist nozzle 109 is fixed to the other end of the drain pipe 107;

[0034] A scraper 114 is provided inside the dust removal box 101;

[0035] A strip-shaped drain outlet 113 is provided on the lower surface of the dust removal box 101. A frame cover 115 is fixed on the surface of the dust removal box 101 at the position of the strip-shaped drain outlet 113. A blocking fan 116 is provided inside the frame cover 115.

[0036] The dust box 101 is equipped with a transmission mechanism 2, which drives the scraper 114 to scrape off the dust particles deposited inside the dust box 101 and drives the blocking fan 116 to discharge the dust particles collected in the frame cover 115;

[0037] The transmission mechanism 2 includes a servo motor 201 fixedly mounted on one side of the dust removal box 101 via a support plate, a spur gear 1 202 fixed to the output end of the servo motor 201, and a spur gear 2 203 meshing with the surface of the spur gear 1 202;

[0038] A connecting rod 207 is rotatably connected to the center of one side of the dust removal box 101 through a bearing. The second spur gear 203 is fixed to one end of the connecting rod 207, and the other end of the connecting rod 207 is fixed to the surface of the scraper 114.

[0039] The transmission mechanism 2 also includes a sprocket 206 fixed to the output end of the servo motor 201, a sprocket 104 fixed to one end of the blocking fan 116 by screws, and a chain 205 meshed between the sprocket 104 and the sprocket 206. The two end surfaces of the blocking fan 116 are rotatably connected via bearings and the frame cover 115.

[0040] A water pump 105 is fixed to the input end thereof with a water pump pipe 106. One end of the water pump pipe 106 passes through the liquid reservoir 104 and extends to the inner bottom of the liquid reservoir 104. The top of the dust removal box 101 is fixedly connected to an annular cover 108. A water mist nozzle 109 is mounted on the inner side wall of the annular cover 108.

[0041] A blade angle structure is provided on the side of the scraper 114 close to the dust removal box 101 , and the scraper 114 contacts the inner wall of the dust removal box 101 .

[0042] In this embodiment, when using the power plant boiler dust removal device, the exhaust port of the boiler is first connected to the air inlet port of the fan 103, and the fan 103 is started to discharge the flue gas into the dust removal box 101;

[0043] During this process, the water pump 105 is started, and the liquid inside the liquid storage tank 104 is pumped out through the water pumping pipe 106 and discharged to the drain pipe 107, and then discharged through the water mist nozzle 109 at one end of the drain pipe 107. The water mist nozzle 109 can discharge water mist, which mixes with the smoke and dust. The water mist can capture and absorb dust particles in the smoke. When the water mist comes into contact with the dust, the dust particles will be wrapped by the tiny water droplets of the water mist, thereby increasing their weight and causing them to settle, which can effectively remove dust in the smoke and improve the quality of smoke exhaust. At the same time, the desulfurizer is added to the liquid storage tank 104 through the liquid injection port, and the desulfurizer is mixed with water. The desulfurizer in the sprayed water mist can remove sulfides in the smoke.

[0044] At the same time, part of the unabsorbed flue gas dust can be filtered through the filter 110, further improving the quality of flue gas dust removal;

[0045] When the particles precipitated by the flue gas and water mist need to be cleaned inside the dust removal box 101, the operation of the fan 103 is stopped, the flue gas is stopped from entering, and the water mist discharge from the water mist nozzle 109 is stopped. Then, the servo motor 201 is started, thereby driving the spur gear 1 202 to rotate. Since the spur gear 1 202 and the spur gear 2 203 are meshed and connected, the spur gear 2 203 is driven to rotate. The spur gear 203 drives the connecting rod 207 to rotate, and the connecting rod 207 drives the scraper 114 to rotate inside the dust removal box 101. The rotation of the scraper 114 can scrape off the dust particles precipitated on the inner wall of the dust removal box 101. As the scraper 114 rotates, the precipitated dust particles are scraped to the position of the strip-shaped sewage outlet 113 and fall into the frame cover 115.

[0046] At the same time, when the servo motor 201 rotates, it can drive the second sprocket 206 to rotate. Since the second sprocket 206 and the first sprocket 204 are meshed and connected by the chain 205, the first sprocket 204 is driven to rotate, and the blocking fan blade 116 is driven to rotate by the first sprocket 204. The dust particles deposited in the frame cover 115 are located in the intersection grooves of adjacent fan blades of the frame cover 115. When the blocking fan blade 116 rotates, the dust in the intersection grooves of the fan blades can be discharged from the frame cover 115.

[0047] Through this operation, in the process of flue gas dust removal, not only are impurities filtered through the filter 110, but also fine dust particles can be further captured through water mist dust removal. The combination of the two can more effectively remove dust from the flue gas and improve the dust removal effect. At the same time, the desulfurizer in the water mist can remove harmful sulfur substances in the flue gas, thereby improving the quality of flue gas emissions and reducing pollution to the environment. At the same time, the dust particles precipitated by the water mist do not need to be cleaned manually, which reduces the labor intensity of the staff and improves the use effect of the device.

[0048] It should be noted that when the servo motor 201 stops, it will drive the blocking fan 116 to return to its initial position. The frame cover 115 can be blocked by the blocking fan 116. The blocking fan 116 is thin and has an arc corner on one side close to the fan.

[0049] The scraper 114 is provided with a blade angle structure on the side close to the dust removal box 101 to improve the effect of scraping out dust particles deposited on the inner wall of the dust removal box 101. At the same time, the surface of the scraper 114 is coated with polyurethane to improve the wear resistance and corrosion resistance of the scraper 114. The scraper 114 has an L-shaped structure.

[0050] Going further;

[0051] In an optional embodiment, an annular baffle 111 is fixed to the inner wall of the dust removal box 101, and the filter 110 is arranged on one side of the annular baffle 111. The surface of the dust removal box 101 close to the filter 110 is threadedly connected with multiple groups of limiting bolts 112 arranged equidistantly in a ring through threaded holes. The filter 110 can be blocked and limited by the limiting bolts 112, and a hand-held twist is fixed on one side of the filter 110.

[0052] In this embodiment, by rotating the limit bolt 112, the limit lock on the filter 110 is released, making it convenient to disassemble and replace the filter 110, and a hand-held twist is fixed on one side of the filter 110, making it more convenient to remove the filter 110 from the dust removal box 101.

[0053] The working principle and use process of the utility model are as follows: when using the power plant boiler dust removal device, first connect the exhaust end of the boiler with the air inlet end of the fan 103, and start the fan 103 to discharge the flue gas into the dust removal box 101; in this process, start the water pump 105, and extract the liquid in the liquid storage tank 104 through the water pumping pipe 106, and discharge it to the drain pipe 107, and discharge it through the water mist nozzle 109 at one end of the drain pipe 107, and the water mist nozzle 109 can discharge water mist, which mixes with the flue gas and can capture and absorb dust particles in the flue gas. When the water mist contacts the dust, the dust particles will be wrapped by the tiny water droplets of the water mist, thereby increasing their weight and causing them to settle. It can effectively remove dust in the flue gas and improve the quality of flue gas discharge. At the same time, the desulfurizer is added to the liquid storage tank 104 through the liquid injection port. The desulfurizer is mixed with water, and the desulfurizer in the sprayed water mist can remove the sulfide in the flue gas; at the same time, part of the unabsorbed flue gas dust can be filtered through the filter 110, further improving the quality of flue gas dust removal; when the particles precipitated by the flue gas and water mist need to be cleaned inside the dust removal box 101, the operation of the fan 103 is stopped, the flue gas is stopped from entering, and the water mist discharge of the water mist nozzle 109 is stopped. Then the servo motor 201 is started, which drives the spur gear 1 202 to rotate. Since the spur gear 1 202 and the spur gear 2 203 are meshed and connected, the spur gear 203 is driven. The second wheel 203 rotates, and the connecting rod 207 is driven to rotate by the spur gear 203, and the scraper 114 is driven to rotate in the dust box 101 by the connecting rod 207. The rotation of the scraper 114 can scrape off the dust particles deposited on the inner wall of the dust box 101. As the scraper 114 rotates, the deposited dust particles are scraped to the position of the strip-shaped sewage outlet 113 and fall into the frame cover 115. At the same time, when the servo motor 201 rotates, it can drive the sprocket 206 to rotate. Since the sprocket 206 and the sprocket 1 204 are meshed and connected by the chain 205, the sprocket 1 204 is driven to rotate, and the blocking fan 116 is driven to rotate by the sprocket 1 204. The particulate dust deposited in the cover 115 is located in the intersection groove of the adjacent fan blades of the frame cover 115. When the blocking fan blade 116 rotates, the dust in the intersection groove of the fan blade can be discharged from the frame cover 115. Through this operation, in the process of flue gas dust removal, not only the impurities are filtered through the filter 110, but also the water mist dust removal method can further capture fine dust particles. The combination of the two can more effectively remove dust from the flue gas and improve the dust removal effect. At the same time, the desulfurizer in the water mist can remove harmful sulfur substances in the flue gas, thereby improving the quality of flue gas discharge and reducing pollution to the environment. At the same time, the dust particles deposited by the water mist do not need to be cleaned manually, which reduces the labor intensity of the staff and improves the use effect of the device.

[0054] At the same time, the contents not described in detail in this specification belong to the existing technology well known to those skilled in the art.

Claims

1. A dust removal device for a power plant boiler, comprising a dust removal box (101), legs (102) fixed at four corners of the surface of the dust removal box (101), and a filter (110) arranged inside the dust removal box (101) for filtering flue gas, characterized in that: A fan (103) is installed at one end of the dust removal box (101), and an output end of the fan (103) is fixedly connected to one side of the dust removal box (101); A liquid storage tank (104) is provided on the ground at one side of the dust removal box (101), and a water pump (105) for extracting liquid is installed on the top of the liquid storage tank (104); A drainage pipe (107) is fixed to the output end of the water pump (105), and a water mist nozzle (109) is fixed to the other end of the drainage pipe (107); A scraper (114) is provided inside the dust removal box (101); A strip-shaped sewage outlet (113) is provided on the lower surface of the dust removal box (101); a frame cover (115) is fixed on the surface of the dust removal box (101) at the position of the strip-shaped sewage outlet (113); and a sealing fan (116) is provided inside the frame cover (115); The dust removal box (101) is equipped with a transmission mechanism (2), which can drive a scraper (114) to scrape off dust particles deposited inside the dust removal box (101), and drive a sealing fan (116) to discharge dust particles collected in the frame cover (115).

2. A power plant boiler dust removal device according to claim 1, characterized in that: A water pump (106) is fixed to the input end of the water pump (105), one end of which passes through the liquid storage tank (104) and extends to the inner bottom of the liquid storage tank (104). The top of the dust removal box (101) is fixedly connected to an annular cover (108), and the water mist nozzle (109) is installed on the inner wall of the annular cover (108).

3. A power plant boiler dust removal device according to claim 2, characterized in that: The scraper (114) is provided with a blade angle structure on one side close to the dust removal box (101), and the scraper (114) is in contact with the inner side wall of the dust removal box (101).

4. The power plant boiler dust removal device according to claim 1, characterized in that: The transmission mechanism (2) comprises a servo motor (201) fixedly mounted on one side of the dust removal box (101) via a support plate, a spur gear 1 (202) fixed to the output end of the servo motor (201), and a spur gear 2 (203) meshed with the surface of the spur gear 1 (202); A connecting rod (207) is rotatably connected to the center of one side of the dust removal box (101) via a bearing, the second spur gear (203) is fixed to one end of the connecting rod (207), and the other end of the connecting rod (207) is fixed to the surface of the scraper (114).

5. The power plant boiler dust removal device according to claim 4, characterized in that: The transmission mechanism (2) further comprises a second sprocket (206) fixed to the output end of the servo motor (201), a first sprocket (204) fixed to one end of the blocking fan (116) by screws, and a chain (205) meshed between the first sprocket (204) and the second sprocket (206), and the two end surfaces of the blocking fan (116) are rotatably connected via bearings and a frame cover (115).

6. The power plant boiler dust removal device according to claim 1, characterized in that: An annular baffle (111) is fixed to the inner side wall of the dust removal box (101), and the filter screen (110) is arranged on one side of the annular baffle (111). A plurality of groups of limiting bolts (112) arranged in an annular shape and at equal intervals are threadedly connected through threaded holes on the surface of the dust removal box (101) near the filter screen (110), and the filter screen (110) can be blocked and limited by the limiting bolts (112).

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