CN211635649U - Flue gas bag-type dust collector for boiler - Google Patents

Abstract

The utility model relates to the technical field of flue gas dust removal auxiliary devices, in particular to a flue gas bag-type dust remover for a boiler, which can reduce the temperature of introduced flue gas, reduce the damage to the interior of the dust remover, conveniently and fully utilize the waste heat in the flue gas and improve the practicability; including well casing, the ash bucket, the apron, the access door, the blowback pipe, the multiunit shunt tubes, go up the casing, the locating plate, multiunit venturi tube, multiunit filter bag frame, the multiunit filter bag, the cooling box, the multiunit dead lever, the multiunit fixed plate, multiunit set screw, communicating pipe, the arc keeps off the cover, the toper keeps off the cover, multiunit bracing piece and multiunit spiral cooling tube, the ash bucket bottom is provided with the relief valve, be provided with the electromagnetic pulse valve on the blowback pipe, it is provided with intake pipe and outlet duct to communicate respectively on first region of ash bucket and the last casing, all be provided with the ooff valve on intake pipe and the outlet duct, cooling box right side wall bottom and top communicate respectively and.

Description

Flue gas bag-type dust collector for boiler

Technical Field

The utility model relates to a flue gas dust removal auxiliary device's technical field especially relates to a flue gas sack cleaner for boiler.

Background

As is known, a boiler is an energy conversion device, energy input into the boiler has chemical energy and electric energy in combustion, the boiler outputs certain heat energy and steam, high-temperature water or an organic heat carrier, and can also generate a large amount of smoke to be discharged, and the smoke contains more dust, impurities and the like, and can cause pollution to a certain extent on the position of a discharged environment when being directly discharged into air, so that the smoke of the boiler needs to be discharged after being filtered, a bag-type dust collector is often adopted for filtering and purifying treatment in the conventional smoke filtering treatment, so that the cleanliness of the smoke is improved, but when the conventional bag-type dust collector for smoke purification is used, the direct introduction into the bag-type dust collector easily causes damage to the bag-type dust collector due to high smoke temperature, and the waste heat in the smoke is inconvenient to be fully utilized, resulting in poor practicality.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a can reduce leading-in flue gas temperature, reduce the damage to the dust remover is inside to can conveniently carry out make full use of to the waste heat in the flue gas, improve the flue gas sack cleaner for boiler of practicality.

The utility model discloses a flue gas sack cleaner for boiler, including well casing, ash bucket, apron, access door, blowback pipe, multiunit shunt tubes, go up casing, locating plate, multiunit venturi tube, multiunit filter bag frame, multiunit filter bag, cooling box, multiunit dead lever, multiunit fixed plate, multiunit set screw, communicating pipe, arc fender cover, toper fender cover, multiunit bracing piece and multiunit spiral cooling tube, the locating plate presss from both sides between last casing and well casing, and locating plate, last casing and well casing pass through bolt fastening connection, the ash bucket is connected with well casing bottom fixed connection, and is provided with the blow-off valve in the ash bucket bottom, the apron is installed at last casing top, be provided with the access hole on well casing right side wall, the access door is installed in the access hole department, the blowback pipe passes the left side wall of last casing and stretches into to the last casing, and the blowback pipe is sealed with last casing contact department, the back flushing pipe is provided with an electromagnetic pulse valve, the multiple groups of shunt pipes are communicated with the back flushing pipe, the upper half area of the ash hopper and the upper shell are respectively communicated with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are respectively provided with a switch valve, the positioning plate is provided with multiple groups of fixing holes, the multiple groups of venturi tubes are respectively and fixedly arranged at the multiple groups of fixing holes, the multiple groups of filter bag frames are respectively arranged at the bottoms of the multiple groups of venturi tubes, the multiple groups of filter bags are respectively wrapped and attached on the outer walls of the multiple groups of filter bag frames, the multiple groups of filter bags are respectively sealed with the outer walls of the multiple groups of venturi tubes, the cooling box is positioned at the lower half area in the middle shell, two ends of the multiple groups of fixing rods are respectively connected with the inner wall of the middle shell and the multiple groups of fixing, the cooling box is internally provided with a cooling cavity, the top and the bottom of the cooling box are respectively provided with a plurality of groups of positioning holes, a plurality of groups of spiral cooling pipes are all positioned in the cooling box, the two ends of the plurality of groups of spiral cooling pipes are respectively and fixedly arranged at the positions of the plurality of groups of positioning holes, the arc-shaped shielding cover is arranged at the bottom of the cooling box, the two ends of the communicating pipe are respectively communicated with the arc-shaped shielding cover and the air inlet pipe, the conical shielding cover is arranged above the cooling box through a plurality of groups of supporting rods, the bottom and the top of the right side wall of the cooling box are respectively communicated with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are both extended out after passing.

The utility model discloses a flue gas sack cleaner for boiler still includes multiunit landing leg and multiunit antiskid seat, the multiunit landing leg all with well casing outer wall welded fastening to multiunit landing leg bottom is connected with multiunit antiskid seat respectively.

The utility model relates to a flue gas bag-type dust collector for a boiler, which also comprises a motor, a speed reducer, a transmission shaft, a first bevel gear, a second bevel gear, a fixed shaft and two groups of scraping blades, the motor is arranged at the input end of the speed reducer, the speed reducer is arranged on the left side wall of the middle shell, one end of the transmission shaft penetrates through the left side wall of the middle shell and is connected with the output end of the speed reducer, and a mechanical sealing element is arranged at the contact position of the transmission shaft and the left side wall of the middle shell, the first conical gear is arranged at the other end of the transmission shaft, the fixed shaft is arranged at the top of the conical shield, the second conical gear is provided with a mounting hole, and the second bevel gear is sleeved on a fixed shaft, a first ball bearing is arranged between the fixed shaft and the second bevel gear, the first bevel gear is meshed with the second bevel gear, and the two groups of scraping pieces are connected with the second bevel gear.

The utility model discloses a flue gas sack cleaner for boiler, be provided with two sets of rubber pads on two sets of scrapers respectively, two sets of rubber pads all keep off cover top contact with the toper.

The utility model discloses a flue gas sack cleaner for boiler still includes locating rack and holding ring, the locating rack both ends are connected with well shells inner wall and holding ring respectively, the transmission shaft passes the holding ring to be provided with second ball bearing between transmission shaft and holding ring inner wall.

The utility model discloses a flue gas sack cleaner for boiler still includes the mount, the mount is installed on the wall of the right side in the upper casing to be provided with the through-hole on the mount, the blowback pipe right-hand member passes the through-hole.

The utility model discloses a flue gas sack cleaner for boiler still includes the protective housing, the protective housing is installed on well casing left side wall, motor and speed reducer all are located the protective housing.

The utility model discloses a flue gas sack cleaner for boiler, be provided with the multiunit louvre on the protective housing to be provided with the dust screen on the protective housing outer wall.

Compared with the prior art, the beneficial effects of the utility model are that: when the boiler flue gas is required to be filtered and purified, firstly, a switch valve is opened, the gas to be treated is guided into a communicating pipe through an air inlet pipe, and enters an arc-shaped shield to be shunted and enters a plurality of groups of spiral cooling pipes, meanwhile, heat absorption fluid is guided into a cooling box through a liquid inlet pipe, the heat absorption fluid is fully contacted with a plurality of groups of spiral cooling pipes and indirectly absorbs the heat of the flue gas circulating in the spiral cooling pipes, the flue gas is discharged through a liquid outlet pipe after being heated, the flue gas after being cooled is discharged and enters a middle shell and flows along the bottom of the cone-shaped shield, a plurality of groups of filter bags are supported by a plurality of groups of filter bag frames to keep the filter bags in a fully opened state all the time, the dust in the gas to be treated is filtered by the plurality of groups of filter bags, the impurities such as the dust and the like are blocked in the middle shell and are settled in a dust hopper or fall on the, the gas after filtration purification gets into in supreme casing through the multiunit venturi tube, and discharge through the outlet duct, when needs carry out the recoil to the multiunit filter bag, close the ooff valve, and open the electromagnetic pulse valve, blow in compressed air into supreme casing and go into in the multiunit filter bag through blowback pipe and multicomponent flow tube with the time of extremely short and short, form the air wave, make the filter bag receive the impact, play certain clearance effect, the dust of clearance out is piled up in the ash bucket under the action of gravity, regularly open the blow-off valve, it can to discharge the dust wherein, thereby can effectively reduce leading-in flue gas temperature, reduce the damage to dust remover inside, and can conveniently carry out make full use of to the waste heat in the flue gas, improve the practicality.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged view of a portion C of FIG. 1;

FIG. 5 is a schematic top view of the connection of the fixed shaft, the second bevel gear and the first ball bearing;

FIG. 6 is a schematic right side view of the connection of the cooling box, liquid inlet pipe and liquid outlet pipe;

in the drawings, the reference numbers: 1. a middle shell; 2. an ash hopper; 3. a cover plate; 4. an access door; 5. a blowback pipe; 6. a shunt tube; 7. an upper housing; 8. positioning a plate; 9. a venturi tube; 10. a filter bag frame; 11. a filter bag; 12. a cooling box; 13. fixing the rod; 14. a fixing plate; 15. a set screw; 16. a communicating pipe; 17. an arc-shaped shield; 18. a conical shield; 19. a support bar; 20. a spiral cooling tube; 21. a discharge valve; 22. an electromagnetic pulse valve; 23. an air inlet pipe; 24. an air outlet pipe; 25. an on-off valve; 26. a liquid inlet pipe; 27. a liquid outlet pipe; 28. a support leg; 29. an anti-slip seat; 30. A motor; 31. a speed reducer; 32. a drive shaft; 33. a first bevel gear; 34. a second bevel gear; 35. a fixed shaft; 36. scraping a blade; 37. a mechanical seal; 38. a first ball bearing; 39. a rubber pad; 40. a positioning frame; 41. a positioning ring; 42. a second ball bearing; 43. A fixed mount; 44. a protective shell; 45. a dust screen.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in figures 1 to 6, the utility model discloses a flue gas bag-type dust collector for boiler, conveniently fix the position of cooling box 12 in well casing 1 through multiunit set screw 15 and multiunit fixed plate 14, can play certain supporting role to the whole through multiunit landing leg 28, and can strengthen the frictional force between the bottom of multiunit landing leg 28 and the contact surface through multiunit antiskid seat 29, reduce the displacement of landing leg 28, improve the stability of whole, it is at work, when needing to filter and purify the boiler flue gas, at first open switch valve 25, introduce the gas that needs to be handled into communicating pipe 16 through intake pipe 23, and in entering arc fender cover 17 shunt and entering to the spiral cooling tube 20 of multiunit, simultaneously lead to the heat absorption fluid in cooling box 12 through feed liquor pipe 26, the heat absorption fluid fully contacts with multiunit spiral cooling tube 20 and indirectly absorbs the heat of the flue gas of wherein circulating, after the temperature is raised, the smoke is discharged through the liquid outlet pipe 27, the smoke after the temperature is lowered is discharged and enters the middle shell 1 and flows along the bottom of the conical shield 18, a plurality of groups of filter bags 11 are supported by a plurality of groups of filter bag frames 10, so that the plurality of groups of filter bags 11 are always kept in a completely opened state, dust in the gas to be processed is filtered by the plurality of groups of filter bags 11, impurities such as dust are blocked in the middle shell 1 and are settled into the dust hopper 2 or on the surface of the conical shield 18 under the action of gravity, the filtered and purified gas enters the upper shell 7 through a plurality of groups of venturi tubes 9 and is discharged through the gas outlet pipe 24, when the plurality of groups of filter bags 11 are required to be backflushed, the switch valve 25 is closed, the electromagnetic pulse valve 22 is opened, compressed air is blown into the upper shell 7 through the backflush pipe 5 and the multi-component flow pipe 6 and enters the plurality of groups of filter bags 11, air waves are formed, so that the filter bag 11 is impacted to play a certain cleaning role, the motor 30 can be electrified and started, the power output by the motor 30 is reduced through the speed reducer 31, the transmission shaft 32 drives the first bevel gear 33 to rotate, the first bevel gear 33 is meshed with the second bevel gear 34, so that the second bevel gear 34 can drive the two groups of scraping blades 36 to rotate, the two groups of rubber pads 39 clean the surface of the conical shield 18, the cleaned dust is accumulated in the ash hopper 2 under the action of gravity, the discharge valve 21 is periodically opened to discharge the dust, the temperature of the introduced flue gas can be effectively reduced, the damage to the interior of the dust remover is reduced, the waste heat in the flue gas can be conveniently and fully utilized, the practicability is improved, the position of the positioning ring 41 can be fixed through the positioning frame 40, and the position of the transmission shaft 32 can be limited, can play certain guard action to motor 30 and speed reducer 31 through protective housing 44, reduce the damage of motor 30 and speed reducer 31 to can conveniently dispel the heat through the multiunit louvre, impurity through dust screen 45 in the reduction air enters into protective housing 44, can conveniently prescribe a limit to the position of blowback pipe through mount 43.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A flue gas bag-type dust collector for a boiler is characterized by comprising a middle shell (1), a dust hopper (2), a cover plate (3), an access door (4), a back flushing pipe (5), a multi-component flow pipe (6), an upper shell (7), a positioning plate (8), a plurality of groups of venturi tubes (9), a plurality of groups of filter bag frames (10), a plurality of groups of filter bags (11), a cooling box (12), a plurality of groups of fixing rods (13), a plurality of groups of fixing plates (14), a plurality of groups of fixing screws (15), a communicating pipe (16), an arc-shaped retaining cover (17), a conical retaining cover (18), a plurality of groups of supporting rods (19) and a plurality of groups of spiral cooling pipes (20), wherein the positioning plate (8) is clamped between the upper shell (7) and the middle shell (1), the positioning plate (8), the upper shell (7) and the middle shell (1) are fixedly connected through bolts, the dust hopper, and a discharge valve (21) is arranged at the bottom of the ash bucket (2), the cover plate (3) is arranged at the top of the upper shell (7), an access hole is arranged on the right side wall of the middle shell (1), the access door (4) is arranged at the access hole, the back-blowing pipe (5) penetrates through the left side wall of the upper shell (7) and extends into the upper shell (7), the contact part of the back-blowing pipe (5) and the upper shell (7) is sealed, an electromagnetic pulse valve (22) is arranged on the back-blowing pipe (5), a plurality of groups of shunt pipes (6) are communicated with the back-blowing pipe (5), an air inlet pipe (23) and an air outlet pipe (24) are respectively communicated with the upper half area of the ash bucket (2) and the upper shell (7), switch valves (25) are respectively arranged on the air inlet pipe (23) and the air outlet pipe (24), a plurality of groups of fixing holes are arranged on the positioning plate (8), and a plurality of groups of venturi pipes, the multiple groups of filter bag frames (10) are respectively arranged at the bottoms of the multiple groups of venturi tubes (9), the multiple groups of filter bags (11) are respectively wrapped and attached to the outer walls of the multiple groups of filter bag frames (10), the multiple groups of filter bags (11) are respectively sealed with the outer walls of the multiple groups of venturi tubes (9), the cooling box (12) is positioned in the lower half area of the middle shell (1), two ends of the multiple groups of fixing rods (13) are respectively connected with the inner wall of the middle shell (1) and the multiple groups of fixing plates (14), the multiple groups of fixing plates (14) are both contacted with the outer wall of the cooling box (12), the multiple groups of fixing screws (15) are respectively screwed through the multiple groups of fixing plates (14) and are screwed into the cooling box (12), a cooling cavity is arranged in the cooling box (12), multiple groups of positioning holes are respectively arranged at the top and the bottom of the cooling box (12), and the multiple groups of spiral cooling tubes (20) are, and multiunit spiral cooling tube (20) both ends are fixed mounting respectively in multiunit locating hole department, the arc keeps off cover (17) and installs in cooling box (12) bottom, communicating pipe (16) both ends keep off cover (17) and intake pipe (23) intercommunication with the arc respectively, the toper keeps off cover (18) and installs in cooling box (12) top region through multiunit bracing piece (19), cooling box (12) right side wall bottom and top communicate respectively and are provided with feed liquor pipe (26) and drain pipe (27), casing (1) rear side wall stretches out in feed liquor pipe (26) and drain pipe (27) all pass to feed liquor pipe (26) and drain pipe (27) and well casing (1) contact department are all sealed.

2. The flue gas bag dust collector for the boiler according to claim 1, further comprising a plurality of sets of legs (28) and a plurality of sets of anti-slip seats (29), wherein the plurality of sets of legs (28) are welded and fixed with the outer wall of the middle casing (1), and the bottom ends of the plurality of sets of legs (28) are respectively connected with the plurality of sets of anti-slip seats (29).

3. The flue gas bag dust collector for the boiler according to claim 2, further comprising a motor (30), a speed reducer (31), a transmission shaft (32), a first bevel gear (33), a second bevel gear (34), a fixed shaft (35) and two sets of scraping blades (36), wherein the motor (30) is installed at the input end of the speed reducer (31), the speed reducer (31) is installed on the left side wall of the middle shell (1), one end of the transmission shaft (32) penetrates through the left side wall of the middle shell (1) and is connected with the output end of the speed reducer (31), a mechanical sealing element (37) is arranged at the contact position of the transmission shaft (32) and the left side wall of the middle shell (1), the first bevel gear (33) is installed at the other end of the transmission shaft (32), the fixed shaft (35) is installed at the top of the conical shield (18), and a mounting hole is arranged on the second bevel gear (34), and the second conical gear (34) is sleeved on the fixed shaft (35), a first ball bearing (38) is arranged between the fixed shaft (35) and the second conical gear (34), the first conical gear (33) is meshed with the second conical gear (34), and the two groups of scraping blades (36) are connected with the second conical gear (34).

4. A flue gas bag dust collector for a boiler according to claim 3, wherein two sets of rubber pads (39) are provided on said two sets of scraper blades (36), respectively, and said two sets of rubber pads (39) are in contact with the top of the conical shield (18).

5. The flue gas bag dust collector for the boiler according to claim 4, further comprising a positioning frame (40) and a positioning ring (41), wherein two ends of the positioning frame (40) are respectively connected with the inner wall of the middle shell (1) and the positioning ring (41), the transmission shaft (32) passes through the positioning ring (41), and a second ball bearing (42) is arranged between the transmission shaft (32) and the inner wall of the positioning ring (41).

6. The flue gas bag dust collector for the boiler according to claim 5, further comprising a fixing frame (43), wherein the fixing frame (43) is mounted on the right side wall inside the upper housing (7), a through hole is arranged on the fixing frame (43), and the right end of the blowback pipe passes through the through hole.

7. A flue gas bag dust collector for a boiler according to claim 6, further comprising a protective housing (44), wherein said protective housing (44) is mounted on the left side wall of the middle housing (1), and said motor (30) and reducer (31) are both located in the protective housing (44).

8. The flue gas bag dust collector for boiler according to claim 7, wherein a plurality of sets of heat dissipation holes are provided on the protective housing (44), and a dust screen (45) is provided on the outer wall of the protective housing (44).

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