CN214065803U - Heat exchanger with scale removal structure - Google Patents
Heat exchanger with scale removal structure Download PDFInfo
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- CN214065803U CN214065803U CN202022545191.3U CN202022545191U CN214065803U CN 214065803 U CN214065803 U CN 214065803U CN 202022545191 U CN202022545191 U CN 202022545191U CN 214065803 U CN214065803 U CN 214065803U
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- heat exchange
- bevel gear
- threaded rod
- descaling
- chamber
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Abstract
The utility model provides a heat exchanger with a descaling structure, which drives a threaded rod to rotate through a driving device, and the descaling structure occluded with the threaded rod threads moves up and down along the threaded rod; a scraper on the descaling sheet moves along the heat exchange tube to scrape water scale on the heat exchange tube; the utility model discloses a descaling structure automatic clear incrustation scale prevents that incrustation scale from depositing the problem of excessive thickness on the heat exchange tube outer wall and taking place, and then avoids the probability that the heat exchange efficiency reduction problem of long-time back heat exchange tube of using takes place, extension heat exchanger life.
Description
Technical Field
The utility model relates to a heat exchanger technical field specifically is a heat exchanger with scale removal structure.
Background
In the procedure of purifying and treating tail gas of the incinerator, the tail gas treated by the dust remover needs to be treated by a cooling heat exchanger and then enters the subsequent procedures. The cooling heat exchanger is as shown in figure 1, the tail gas output pipeline of the dust remover is communicated with a tail gas inlet 4, tail gas is cooled from bottom to top through a heat exchange pipe 2 and is finally discharged through a smoke outlet 6, cooling water enters from a water inlet 3 and is finally discharged through a drain pipe 5 from bottom to top in the shell 1, and soot deposited in the cooling process of the tail gas is discharged from an ash cleaning port 7.
However, the cooling water is generally industrial wastewater generated in the process, and although the industrial wastewater is chemically treated before being input into the heat exchanger, a large amount of impurities still exist, scale is formed on the heat exchange tube, and the heat exchange efficiency of the heat exchange tube is reduced after the heat exchange tube is used for a long time, and even the heat exchange capacity is gradually lost.
Disclosure of Invention
In order to solve the long-term use of heat exchanger, lead to the problem that heat exchange efficiency reduceed because of the heat exchange tube outer wall formation incrustation scale, the utility model provides a heat exchanger with scale removal structure, it can regularly clear up the incrustation scale, prevents to lead to the heat exchanger inefficacy because of the incrustation scale after passing.
The utility model relates to a heat exchanger with scale removal structure: the device comprises a shell and a heat exchange tube, wherein the shell is divided into a smoke exhaust chamber, a heat exchange chamber and an ash removal chamber from top to bottom by an upper tube plate and a lower tube plate; the heat exchange tubes are vertically parallel to the inside of the heat exchange chamber, and the arrangement shape of the heat exchange tubes is adapted to the shape of an inner cavity of the heat exchange chamber; the two ends of the heat exchange tube are communicated with the smoke discharge chamber and the ash removal chamber; one end of the water drainage pipe penetrates through the upper pipe plate and is communicated with the heat exchange chamber, and the other end of the water drainage pipe is connected with an external wastewater treatment device; a water inlet pipe is arranged at the bottom of the heat exchange chamber; the top of the ash cleaning chamber is provided with a tail gas inlet; it is characterized in that it also comprises: the descaling structure comprises a descaling disc, a threaded rod and a driving device;
one end of the threaded rod is rotatably arranged at the bottom of the upper tube plate, and the other end of the threaded rod penetrates through the lower tube plate and is rotatably arranged in the ash removal chamber;
the descaling disc comprises support frames which are respectively crossed with the heat exchange tubes, and the support frames are arranged on two sides of each heat exchange tube; the side wall of the support frame adjacent to the heat exchange tubes is provided with a descaling sheet with a scraper aiming at each heat exchange tube; the scraper is provided with an arc-shaped cutting edge, and the cutting edge is tightly attached to the side wall of the heat exchange tube;
the supporting frames are connected with each other through the top grid plate and the bottom grid plate; nut seats are fixedly arranged at the top of the top grating plate and the bottom of the bottom grating plate, and the descaling disc is sleeved on the threaded rod through the nut seats; the center of the nut seat is provided with an inner spiral hole matched with the thread of the threaded rod, the threaded rod is driven by the driving device to rotate, and the descaling disc moves linearly along the threaded rod.
It is further characterized in that:
the driving device includes: the motor is fixed in the shell 1 through a fixing frame, a first bevel gear is arranged on a rotating shaft connected with an output shaft of the motor, a second bevel gear is fixedly arranged on the outer surface of the threaded rod, a bevel gear rod with two ends provided with the bevel gears respectively is installed between the first bevel gear and the second bevel gear through the fixing frame, and the bevel gears on the bevel gear rod are meshed with the first bevel gear and the second bevel gear respectively;
the cross section of the inner cavity of the shell is circular; the heat exchange tubes are arranged in a concentric circle manner; the cylindrical support frames are respectively arranged with the heat exchange tubes in a cross way according to the diameter size; through holes for the heat exchange tubes to pass through are formed in the disc-shaped top grid plate and the disc-shaped bottom grid plate;
the heat exchange tubes in the heat exchange chamber are arranged into two concentric circles, and 3 support frames are arranged with the heat exchange tubes in a crossed mode.
The utility model provides a heat exchanger with a descaling structure, which drives a threaded rod to rotate through a driving device, and the descaling structure occluded with the threaded rod threads moves up and down along the threaded rod; a scraper on the descaling sheet moves along the heat exchange tube to scrape water scale on the heat exchange tube; the utility model discloses a descaling structure automatic clear incrustation scale prevents that incrustation scale from depositing the problem of excessive thickness on the heat exchange tube outer wall and taking place, and then avoids the probability that the heat exchange efficiency reduction problem of long-time back heat exchange tube of using takes place, extension heat exchanger life.
Drawings
FIG. 1 is a schematic diagram of a heat exchanger according to the prior art;
FIG. 2 is a schematic structural view of a heat exchanger with a descaling structure installed therein;
FIG. 3 is a schematic sectional view of the heat exchanger in the direction A-A.
Detailed Description
As shown in fig. 2-3, the utility model relates to a heat exchanger with scale removal structure: the device comprises a shell 1 and a heat exchange tube 2, wherein the shell 1 is divided into a smoke exhaust chamber 11, a heat exchange chamber 12 and an ash removal chamber 10 which are mutually closed from top to bottom by an upper tube plate 8 and a lower tube plate 9; the heat exchange tubes 2 are vertically arranged in parallel in the heat exchange chamber 12, a flue is reserved between the heat exchange tubes 2, and the arrangement shape is adapted to the shape of an inner cavity of the heat exchange chamber 12; two ends of the heat exchange tube 2 are communicated with a smoke exhaust chamber 11 and an ash cleaning chamber 10; one end of the drain pipe 5 penetrates through the upper pipe plate and is communicated with the heat exchange chamber 12, and the other end of the drain pipe is connected with an external wastewater treatment device; the bottom of the heat exchange chamber 12 is provided with a water inlet pipe 3; the top of the ash cleaning chamber 10 is provided with an exhaust gas inlet 4. During heat exchange, the tail gas inlet 4 is connected with a tail gas output pipeline of the dust remover, and flue gas enters the closed ash cleaning chamber 10 from the tail gas inlet 4, enters the heat exchange tube 2 and enters the heat exchange chamber from bottom to top; the water inlet pipe 3 is connected with a water supply device of industrial wastewater, the industrial wastewater enters the heat exchange chamber from the water inlet pipe, passes through the heat exchange chamber from bottom to top and is discharged out of the heat exchanger through a water discharge pipe 5 communicated with the heat exchange chamber; the industrial wastewater exchanges heat with the tail gas in the heat exchange tube 2 in the heat exchange chamber; the tail gas after heat exchange enters the smoke exhaust chamber 11 through the heat exchange tube 2 and is exhausted from a smoke exhaust port 6 at the top end of the smoke exhaust chamber 11; in the heat exchange process, impurities in the tail gas are precipitated into soot due to temperature reduction, enter the soot cleaning chamber 10 and are discharged from the soot cleaning port 7.
The descaling structure comprises a descaling disc 13, a threaded rod 14 and a driving device; one end of the threaded rod 14 is rotatably arranged at the bottom of the upper tube plate 8 through a bearing assembly, and the other end of the threaded rod passes through the lower tube plate 9 and is rotatably arranged in the ash cleaning chamber 10 through the bearing assembly; the descaling disc 13 comprises support frames which are respectively crossed with the heat exchange tubes 2, and the support frames are arranged on two sides of each heat exchange tube 2; the side wall of the support frame adjacent to the heat exchange tubes 2 is provided with a descaling sheet with a scraper 13-4 aiming at each heat exchange tube 2; the scraper 13-4 is provided with an arc-shaped cutting edge which is tightly attached to the side wall of the heat exchange tube 2; the arc angle of the scrapers 13-4 is matched with the outer wall of the heat exchange tube 2, and the scrapers 13-4 on the two sides can just clean water scales on the circumference of the outer wall of the heat exchange tube 2; the scraper 13-4 and the support frame are integrally formed, and are made of wear-resistant materials, so that the heat conducting performance is good, and the service life is long; the adjacent scrapers 14-4 are not connected, and a heat exchange water channel 13-8 is arranged to avoid blocking the flow of heat exchange water.
The supporting frames are connected with the bottom grid plate 13-6 through the top grid plate 13-5; the top center position of the top grid plate 13-5 and the bottom center position of the bottom grid plate 13-6 are fixedly provided with nut seats 13-7, the descaling disc 13 is sleeved on a threaded rod 14 through the nut seats 13-7, the center of the nut seat 13-7 is provided with an inner spiral hole matched with the thread of the threaded rod 14, and the threaded rod 14 rotates under the driving of a driving device; in the concrete implementation, the descaling disc 13 moves linearly along the threaded rod 14 in the up-and-down direction based on the screw-nut structure.
In this embodiment, as shown in fig. 3, the cross section of the inner cavity of the housing 1 is circular; the heat exchange tubes 2 are arranged in a concentric circle manner; the cylindrical support frames are respectively arranged with the heat exchange tubes 2 in a cross way according to the diameter size; through holes for the heat exchange tubes 2 to pass through are formed in the disc-shaped top grid plate 13-5 and the disc-shaped bottom grid plate 13-6; the nut seats 13-7 are respectively arranged at the circle centers of the top grid plate 13-5 and the bottom grid plate 13-6, and the threaded rod 14 sequentially passes through the circle centers of the nut seat 13-7 at the top, the top grid plate 13-5, the bottom grid plate 13-6 and the nut seat 13-7 at the bottom; the heat exchange tubes 2 in the heat exchange chamber 12 are two concentric circles, 3 support frames 13-1, 13-2 and 13-3 are respectively arranged in a cross mode with the two rows of annularly arranged heat exchange tubes 2, and each heat exchange tube 2 is guaranteed to be simultaneously provided with two scrapers 13-4; ensure that the outer wall of the heat exchange tube 2 can be cleaned of scale without dead angles.
The driving device comprises a motor 19 fixed in the shell 1 through a fixing frame, a first bevel gear 16 is arranged on a rotating shaft connected with an output shaft of the motor 19, a second bevel gear 17 is fixedly arranged on the outer surface of the threaded rod 14, a bevel gear rod 15 with a third bevel gear 18 and a fourth bevel gear 19 respectively arranged at two ends is arranged between the first bevel gear 16 and the second bevel gear 17 through a fixing frame 20, the fourth bevel gear 19 on the bevel gear rod 15 is meshed with the first bevel gear 16, and the third bevel gear 18 is meshed with the second bevel gear 17; a sealing box body (not marked in the figure) is arranged outside the driving device, so that the driving device is prevented from being polluted by the ash impurities and damaging equipment.
When scale is removed, the motor 19 is started, and the output shaft of the motor 19 drives the rotating shaft and the first conical gear 16 on the rotating shaft to rotate; a fourth bevel gear 19 meshed with the first bevel gear 16 drives to drive a third bevel gear 18 on the other side of the bevel gear rod 15 to rotate; the second bevel gear 17 fitted with the third bevel gear 18 rotates simultaneously to drive the threaded rod 14 to rotate; the descaling disc 13 meshed with the threaded rod 14 through threads moves up and down along the threaded rod 14, and scrapers 13-4 are arranged on each heat exchange tube 2 to scrape and descale simultaneously in the moving process. The removed scale is discharged out of the heat exchanger along with the heat exchange water.
Claims (4)
1. A heat exchanger with a descaling structure comprises: the device comprises a shell and a heat exchange tube, wherein the shell is divided into a smoke exhaust chamber, a heat exchange chamber and an ash removal chamber from top to bottom by an upper tube plate and a lower tube plate; the heat exchange tubes are vertically parallel to the inside of the heat exchange chamber, and the arrangement shape of the heat exchange tubes is adapted to the shape of an inner cavity of the heat exchange chamber; the two ends of the heat exchange tube are communicated with the smoke discharge chamber and the ash removal chamber; one end of the water drainage pipe penetrates through the upper pipe plate and is communicated with the heat exchange chamber, and the other end of the water drainage pipe is connected with an external wastewater treatment device; a water inlet pipe is arranged at the bottom of the heat exchange chamber; the top of the ash cleaning chamber is provided with a tail gas inlet; it is characterized in that it also comprises: the descaling structure comprises a descaling disc, a threaded rod and a driving device;
one end of the threaded rod is rotatably arranged at the bottom of the upper tube plate, and the other end of the threaded rod penetrates through the lower tube plate and is rotatably arranged in the ash removal chamber;
the descaling disc comprises support frames which are respectively crossed with the heat exchange tubes, and the support frames are arranged on two sides of each heat exchange tube; the side wall of the support frame adjacent to the heat exchange tubes is provided with a descaling sheet with a scraper aiming at each heat exchange tube; the scraper is provided with an arc-shaped cutting edge, and the cutting edge is tightly attached to the side wall of the heat exchange tube;
the supporting frames are connected with each other through the top grid plate and the bottom grid plate; nut seats are fixedly arranged at the top of the top grating plate and the bottom of the bottom grating plate, and the descaling disc is sleeved on the threaded rod through the nut seats; the center of the nut seat is provided with an inner spiral hole matched with the thread of the threaded rod, the threaded rod is driven by the driving device to rotate, and the descaling disc moves linearly along the threaded rod.
2. The heat exchanger with a descaling structure according to claim 1, wherein: the driving device includes: fix through the mount the inside motor of casing, set up first bevel gear in the pivot of motor output shaft connection, the external surface mounting of threaded rod sets up second bevel gear, and the bevel gear pole that both ends were provided with bevel gear respectively passes through the mount is installed first bevel gear between the second bevel gear, last bevel gear of bevel gear pole respectively with first bevel gear second bevel gear meshing.
3. The heat exchanger with a descaling structure according to claim 1, wherein: the cross section of the inner cavity of the shell is circular; the heat exchange tubes are arranged in a concentric circle manner; the cylindrical support frames are respectively arranged with the heat exchange tubes in a cross way according to the diameter size; the disc-shaped top grid plate and the disc-shaped bottom grid plate are provided with through holes for the heat exchange tubes to pass through.
4. The heat exchanger with a descaling structure according to claim 1, wherein: the heat exchange tubes in the heat exchange chamber are arranged into two concentric circles, and 3 support frames are arranged with the heat exchange tubes in a crossed mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022545191.3U CN214065803U (en) | 2020-11-06 | 2020-11-06 | Heat exchanger with scale removal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022545191.3U CN214065803U (en) | 2020-11-06 | 2020-11-06 | Heat exchanger with scale removal structure |
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| Publication Number | Publication Date |
|---|---|
| CN214065803U true CN214065803U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022545191.3U Active CN214065803U (en) | 2020-11-06 | 2020-11-06 | Heat exchanger with scale removal structure |
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| CN (1) | CN214065803U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958936A (en) * | 2021-10-11 | 2022-01-21 | 浙江浙能镇海燃气热电有限责任公司 | Quick furnace for power center |
| CN116146970A (en) * | 2023-04-24 | 2023-05-23 | 厦门铭光能源科技有限公司 | Welded plate-type coal economizer |
| CN116734279A (en) * | 2023-07-24 | 2023-09-12 | 济南百诚供水换热设备有限公司 | Straight pipe type flue gas heat exchange device |
-
2020
- 2020-11-06 CN CN202022545191.3U patent/CN214065803U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958936A (en) * | 2021-10-11 | 2022-01-21 | 浙江浙能镇海燃气热电有限责任公司 | Quick furnace for power center |
| CN113958936B (en) * | 2021-10-11 | 2024-03-01 | 浙江浙能镇海燃气热电有限责任公司 | Quick furnace for power center |
| CN116146970A (en) * | 2023-04-24 | 2023-05-23 | 厦门铭光能源科技有限公司 | Welded plate-type coal economizer |
| CN116734279A (en) * | 2023-07-24 | 2023-09-12 | 济南百诚供水换热设备有限公司 | Straight pipe type flue gas heat exchange device |
| CN116734279B (en) * | 2023-07-24 | 2024-01-30 | 济南百诚供水换热设备有限公司 | Straight pipe type flue gas heat exchange device |
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