CN217928840U

CN217928840U - Flue gas waste heat recovery device

Info

Publication number: CN217928840U
Application number: CN202222335561.XU
Authority: CN
Inventors: 王颖; 梁奎; 马少海
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2022-11-29
Anticipated expiration: 2032-09-02

Abstract

The utility model relates to a flue gas waste heat recovery device, including the box, circulation box A is installed to the bottom in the box, and circulation box B is installed at the top in the box, and even intercommunication has the runner pipe between circulation box A and the circulation box B. The inside of runner pipe is provided with the pivot, and the bottom of pivot is rotated with the bottom in the circulation box A and is connected, and the surface of pivot is located the runner intraductal symmetry and installs two doctor-bars, and two doctor-bars all are in close contact with the inner wall of runner pipe. The inside of the circulation box A is provided with a cleaning component which enables the rotating shaft to drive the scraping blade to clean the inner wall of the circulation pipe. The outer side of the box body is communicated with a smoke inlet pipe. The position of the outer side of the box body, which is close to the upper end, is communicated with a water inlet pipe, and the position of the outer side of the box body, which is close to the lower side, is communicated with a water outlet pipe. The utility model discloses a motor drives pinion rack drive pivot reciprocating rotation for the doctor-bar scrapes and rubs and clear purpose to the siphunculus inner wall, and the dust is piled up at the siphunculus inner wall in avoiding the flue gas, leads to heat transfer effect to reduce, and reduces the mesh of the circulation of flue gas.

Description

Flue gas waste heat recovery device

Technical Field

The utility model relates to a waste heat recovery technical field specifically is a flue gas waste heat recovery device.

Background

The high-temperature flue gas exhausted in industrial production can often take away 20-50% of the heat supply of the furnace, and in order to promote energy conservation and emission reduction and further improve the heat efficiency of the furnace, the flue gas waste heat recovery is also an important energy-saving way, and the flue gas waste heat recovery mainly converts the heat carried by the flue gas into the heat which can be utilized through a flue gas waste heat recovery device.

The existing flue gas waste heat recovery device usually heats water in the device by using the waste heat of flue gas, but the flue gas often contains dust, the dust is easy to accumulate on the inner wall of a pipeline after long-time use, the heat transfer effect is reduced, the circulation of the flue gas is reduced, and the flue gas is easy to pollute the air environment due to the dust when being discharged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can clear up the accumulational dust of pipe inner wall, and carry out a flue gas waste heat recovery device of dust fall when the flue gas is discharged.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a flue gas waste heat recovery device, includes the box, and circulation box A is installed to the bottom in the box, and circulation box B is installed at the top in the box, and even intercommunication has the runner pipe between circulation box A and the circulation box B. The inside of runner pipe is provided with the pivot, and the bottom of pivot is rotated with the bottom in the circulation box A and is connected, and the surface of pivot is located the runner intraductal symmetry and installs two doctor-bars, and two doctor-bars all are in close contact with the inner wall of runner pipe. The inside of the circulation box A is provided with a cleaning component which enables the rotating shaft to drive the scraping blade to clean the inner wall of the circulation pipe. The outside intercommunication of box has the flue gas to advance the pipe, and the flue gas advances the pipe and communicates with circulation box A, and the upside intercommunication of circulation box B has the flue gas exit tube, and the flue gas exit tube extends to the outside of box. The position of the outer side of the box body, which is close to the upper end, is communicated with a water inlet pipe, and the position of the outer side of the box body, which is close to the lower side, is communicated with a water outlet pipe. The outside of box is provided with the dust fall subassembly that carries out the dust fall to flue gas exit tube exhaust flue gas.

It is thus clear that, can be to the water injection in the box through the inlet tube, and the log raft after will heating through the outlet pipe is discharged and is used, the flue gas is getting into circulation box A, back in circulation pipe and the circulation box B, can increase the area of contact with water, and then improve the recovery efficiency to the flue gas waste heat, through setting up clean subassembly, can drive the scraper and clear up the accumulational dust of circulation pipe inner wall, it is too thick to avoid the dust to pile up, lead to the heat transfer effect to reduce, and reduce the circulation of flue gas, through setting up the dust fall subassembly, can carry out the dust fall to the flue gas from flue gas exit tube exhaust and handle, avoid direct discharge to influence air circumstance, the theory of green production has been improved.

Further, the cleaning assembly comprises a toothed ring sleeved on the outer surface of the rotating shaft, a toothed plate is arranged inside the circulation box A, the toothed plate is connected with the toothed ring in a meshed mode, side plates are installed at two ends of the toothed plate respectively, the surface of one side plate is connected with a push rod, the end portion of the push rod penetrates through the outer side of the circulation box A and the outer side of the box body extends to the box body, the inner wall of the circulation box A is connected with a guide rod, the end portion of the guide rod penetrates through the inner portion of the other side plate, a spring is sleeved on the outer surface of the guide rod, two ends of the spring are respectively connected with the inner wall of the circulation box A and the outer surface of the other side plate, a mounting box is installed on the outer side of the box, a motor is installed inside the end portion of an output shaft of the motor, the outer edge of the cam is in close contact with the end portion of the push rod, the motor drives the side plates to move, the spring force to push the toothed plate to push, the toothed ring to reciprocate, the inner wall of the rotary shaft to scrape the through pipe, the dust scraped through pipe to drop through pipe through the gravity effect, and the purpose of cleaning the inside of the through pipe is achieved.

Further, the dust fall subassembly is including setting up the L venturi tube at the box upside, flue gas exit tube and L venturi tube intercommunication, the dust fall pipe is installed at the top of L venturi tube, the water tank is installed in the outside of box, the water pump is installed in the outside of water tank, the delivery end intercommunication of water pump has L shape water pipe, the internally mounted of dust fall pipe has annular water pipe, the tip and the annular water pipe intercommunication of L shape water pipe, annular water pipe's surface evenly is provided with atomizer, the water pump is taken out the water in the water tank and is spout downwards through atomizer, and the flue gas of following the intraductal exhaust flue gas of flue gas outlet can be fully with atomizer spun water smoke contact at the in-process of upward movement, reach the purpose of dust fall.

Furthermore, the bottom of the L-shaped pipe is provided with a filter, the filter is communicated with the water tank, and water after dust fall enters the water tank again after passing through the filter, so that the purpose of recycling is achieved, and water resources are saved.

Further, the outside intercommunication of circulation box B has the washing water pipe, and the flue gas advances the downside of pipe and installs the guide and drench the valve, when clean in the convection current pipe, through washing of washing water pipe water injection, can further improve clean effect, and the accessible guide drenches the valve with sewage discharge.

Furthermore, the tail end of the smoke outlet pipe is downwards inclined and communicated with the L-shaped pipe, so that water sprayed by the atomizing spray head cannot flow back into the smoke outlet pipe, and the normal use of the device is ensured.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is a schematic view of the local cross-sectional structure of the present invention.

Fig. 3 is a schematic view of a partial section structure of the middle flow-through box a of the present invention.

Fig. 4 is a schematic diagram of the regional structure of the motor of the present invention.

Fig. 5 is an enlarged view of a in fig. 1.

Fig. 6 is an enlarged schematic view of B in fig. 3.

In the figure: 100. a box body; 101. a flow-through box A; 102. a flow-through box B; 103. a flow-through tube; 104. a rotating shaft; 105. scraping a blade; 106. a flue gas inlet pipe; 107. a flue gas outlet pipe; 108. a water inlet pipe; 109. a water outlet pipe; 110. flushing the water pipe; 111. a pilot shower valve; 200. a cleaning assembly; 201. a toothed ring; 202. a toothed plate; 203. a side plate; 204. a push rod; 205. a guide bar; 206. a spring; 207. mounting a box; 208. a motor; 209. a cam; 300. a dust fall assembly; 301. an L-shaped tube; 302. a dust settling pipe; 303. a water tank; 304. a water pump; 305. an L-shaped water pipe; 306. an annular water pipe; 307. an atomizing spray head; 400. and (4) a filter.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, the flue gas waste heat recovery device comprises a box 100, a circulation box a101 is installed at the bottom in the box 100, a circulation box B102 is installed at the top in the box 100, and a circulation pipe 103 is uniformly communicated between the circulation box a101 and the circulation box B102. The inside of the circulation pipe 103 is provided with a rotating shaft 104, the bottom of the rotating shaft 104 is rotatably connected with the bottom inside the circulation box A101, two scraping blades 105 are symmetrically arranged on the outer surface of the rotating shaft 104 in the circulation pipe 103, and the two scraping blades 105 are both in close contact with the inner wall of the circulation pipe 103. The flowing box A101 is provided with a cleaning component 200 which enables the rotating shaft 104 to drive the scraping blade 105 to clean the inner wall of the flowing pipe 103. The outer side of the box body 100 is communicated with a flue gas inlet pipe 106, the flue gas inlet pipe 106 is communicated with the circulation box A101, the upper side of the circulation box B102 is communicated with a flue gas outlet pipe 107, and the flue gas outlet pipe 107 extends to the outer side of the box body 100. The outer side of the box 100 near the upper end is communicated with a water inlet pipe 108, and the outer side of the box 100 near the lower side is communicated with a water outlet pipe 109. A dust fall module 300 for performing dust fall on the flue gas discharged from the flue gas outlet pipe 107 is provided outside the casing 100.

After being added with water for box 100 in through inlet tube 108, in advancing pipe 106 row inflow box A101 with the flue gas from the flue gas, the flue gas enters into circulation box A101 after the reposition of redundant personnel that flows through circulation box A101 in the runner pipe 103, circulate to circulation box B102 in the end, the flue gas is when getting into circulation box A101 until when discharging from circulation box B102, all can heat for water, and increase the area of contact with water, the flue gas is at last through the collection of circulation box B102, discharge from flue gas exit tube 107, and can make the flue gas carry out the dust fall through dust fall subassembly 300 before discharging and handle, avoid direct discharge to influence air circumstance, the theory of green production has been improved, under this banker's long-time use, the dust adhesion that carries in the flue gas flows the inner wall of pipe 103, accessible cleaning subassembly 200 is cleaned in flowing through the pipe 103, avoid the dust to pile up thickly, lead to the heat transfer effect reduction, and reduce the circulation of flue gas.

Preferably, the cleaning assembly 200 includes a toothed ring 201 sleeved on the outer surface of the rotating shaft 104, a toothed plate 202 is arranged inside the circulation box a101, the toothed plate 202 is engaged with the toothed ring 201, side plates 203 are respectively installed at two ends of the toothed plate 202, a push rod 204 is connected to the surface of the side plate 203 on one side, the end of the push rod 204 penetrates through the circulation box a101 and the box 100 and extends to the outside of the box 100, a guide rod 205 is connected to the inner wall of the circulation box a101, the end of the guide rod 205 penetrates through the inside of the side plate 203 on the other side, a spring 206 is sleeved on the outer surface of the guide rod 205, two ends of the spring 206 are respectively connected to the inner wall of the circulation box a101 and the outer surface of the side plate 203 on the other side, a mounting box 207 is installed on the outside of the box 100, a motor 208 is installed inside the mounting box 207, the cam 209 is installed to the tip of motor 208 output shaft, the outer edge of cam 209 and the tip in close contact with of catch bar 204, when needing to clear up in the circulation pipe 103, can start motor 208 and drive cam 209 rotatory, the extrusion to catch bar 204 through cam 209 makes catch bar 204 promote curb plate 203 and toothed plate 202 remove and compression spring 206, and it is rotatory to drive pivot 104 through the meshing relation of ring gear 201 and toothed plate 202, because the promotion of spring 206 elasticity, make catch bar 204 can be all the time with cam 209 in close contact with, thereby can drive toothed plate 202 reciprocating motion in the rotatory in-process of cam 209, and drive pivot 104 reciprocating rotation, and then drive doctor-bar 105 to carry out reciprocal scraping to the circulation pipe 103 inner wall, reach clear purpose.

Preferably, the dust fall assembly 300 comprises an L-shaped pipe 301 arranged on the upper side of the box body 100, the flue gas outlet pipe 107 is communicated with the L-shaped pipe 301, a dust fall pipe 302 is arranged at the top of the L-shaped pipe 301, a water tank 303 is arranged on the outer side of the box body 100, a water pump 304 is arranged on the outer side of the water tank 303, an L-shaped water pipe 305 is communicated with the water outlet end of the water pump 304, an annular water pipe 306 is arranged inside the dust fall pipe 302, the end of the L-shaped water pipe 305 is communicated with the annular water pipe 306, and atomizing nozzles 307 are uniformly arranged on the outer surface of the annular water pipe 306.

Preferably, the bottom of the L-shaped pipe 301 is provided with a filter 400, the filter 400 is communicated with the water tank 303, and the water mist sprayed by the atomizer 307 is used for reducing dust in the flue gas, flows into the filter 400 through the L-shaped pipe 301, and is filtered by the filter 400 and then enters the water tank 303 again for use, so that the water resource is saved.

Preferably, the outside of circulation box B102 is communicated with a flushing water pipe 110, a pilot valve 111 is installed at the lower side of flue gas inlet pipe 106, when the circulation pipe 103 is cleaned, water can be injected into circulation box B102 from flushing water pipe 110, so that water can flush the inside of circulation pipe 103, the cleaning efficiency of the inside of circulation pipe 103 is improved, and the flushed sewage can be discharged from pilot valve 111.

Preferably, the tail end of the flue gas outlet pipe 107 is inclined downwards to be communicated with the L-shaped pipe 301, the flue gas can normally flow into the L-shaped pipe 301 through the flue gas outlet pipe 107, and the water mist sprayed by the atomizing nozzle 307 cannot flow into the flow pipe 103 through the flue gas outlet pipe 107 under the influence of gravity to influence the use of the device, so that the sewage can only flow into the water tank 303 through the L-shaped pipe 301 for recycling.

The present invention has been described in detail with reference to the specific embodiments, and it should not be construed that the embodiments of the present invention are limited to the description. For a person skilled in the art to which the invention pertains, several equivalent alternatives or obvious modifications, all of which have the same properties or uses, should be considered as belonging to the scope of protection of the invention, as determined by the claims submitted, without departing from the inventive concept.

Claims

1. The utility model provides a flue gas waste heat recovery device, includes box (100), its characterized in that:

a circulation box A (101) is installed at the bottom in the box body (100), a circulation box B (102) is installed at the top in the box body (100), and circulation pipes (103) are uniformly communicated between the circulation box A (101) and the circulation box B (102);

a rotating shaft (104) is arranged in the circulating pipe (103), the bottom of the rotating shaft (104) is rotatably connected with the bottom in the circulating box A (101), two scraping blades (105) are symmetrically arranged on the outer surface of the rotating shaft (104) in the circulating pipe (103), and the two scraping blades (105) are both in close contact with the inner wall of the circulating pipe (103);

a cleaning component (200) which enables the rotating shaft (104) to drive the scraping blade (105) to clean the inner wall of the circulation pipe (103) is arranged in the circulation box A (101);

a flue gas inlet pipe (106) is communicated with the outer side of the box body (100), the flue gas inlet pipe (106) is communicated with the circulation box A (101), a flue gas outlet pipe (107) is communicated with the upper side of the circulation box B (102), and the flue gas outlet pipe (107) extends to the outer side of the box body (100);

a water inlet pipe (108) is communicated with the position, close to the upper end, of the outer side of the box body (100), and a water outlet pipe (109) is communicated with the position, close to the lower side, of the outer side of the box body (100);

the outside of box (100) is provided with the dust fall subassembly (300) that carries out the dust fall to flue gas exit tube (107) exhaust flue gas.

2. The flue gas waste heat recovery device according to claim 1, characterized in that:

cleaning assembly (200) is including cup jointing ring gear (201) of pivot (104) surface, the inside of circulation box A (101) is provided with pinion rack (202), pinion rack (202) with ring gear (201) meshing connection, curb plate (203) are all installed at the both ends of pinion rack (202), and one side the surface of curb plate (203) is connected with catch bar (204), the tip of catch bar (204) wears to see through circulation box A (101) with box (100) extend to the outside of box (100), the inner wall of circulation box A (101) is connected with guide bar (205), the tip of guide bar (205) wears to see through the opposite side the inside of curb plate (203), the outer surface cover of guide bar (205) is equipped with spring (206), the both ends of spring (206) respectively with the inner wall and the opposite side of circulation box A (101) the outer surface connection of curb plate (203), installation box (207) is installed to the outside of box (100), the internally mounted of installation box (207), motor (208) is installed to the inside of installation box (207), the motor (209) the end along the cam contact of motor (209), the outside of curb plate (204) closely along the contact of push bar (204).

3. The flue gas waste heat recovery device according to claim 2, characterized in that:

dust fall subassembly (300) is including setting up L venturi tube (301) of box (100) upside, flue gas exit tube (107) with L venturi tube (301) intercommunication, dust fall pipe (302) are installed at the top of L venturi tube (301), water tank (303) are installed in the outside of box (100), water pump (304) are installed in the outside of water tank (303), the outlet end intercommunication of water pump (304) has L shape water pipe (305), the internally mounted of dust fall pipe (302) has annular water pipe (306), the tip of L shape water pipe (305) with annular water pipe (306) intercommunication, the surface of annular water pipe (306) evenly is provided with atomizer (307).

4. The flue gas waste heat recovery device according to claim 3, characterized in that:

the bottom of the L-shaped pipe (301) is provided with a filter (400), and the filter (400) is communicated with the water tank (303).

5. The flue gas waste heat recovery device according to claim 4, wherein:

the outer side of the circulation box B (102) is communicated with a flushing water pipe (110), and the lower side of the smoke inlet pipe (106) is provided with a guide shower valve (111).

6. The flue gas waste heat recovery device according to claim 5, wherein:

the tail end of the smoke outlet pipe (107) is downwards inclined and communicated with the L-shaped pipe (301).