Circular flue jacket heat pipe economizer

Abstract

The utility model discloses a circular flue jacket heat pipe economizer which comprises a base, a jacket shell is arranged at the top of the base, a filter bin is arranged in the middle of the bottom in the base, a heat exchange flue communicated with the filter bin is arranged on the inner side of the jacket shell, an air inlet pipe is arranged on one side of the filter bin, and an air outlet pipe is arranged on the other side of the filter bin. A filter screen is arranged on the top of the inner side of the filter bin, and three sets of heat exchange pipes are arranged on the two sides of the heat exchange flue. Through mutual cooperation of the rotating rod, the motor, the filter screen, the scraping plate, the movable rod, the U-shaped rod and the hinge rod, when the device is used, smoke can be filtered through the filter screen, dust making contact with the heat pipe is reduced, the dust can be prevented from contaminating the outer side of the heat pipe, and the heat exchange efficiency is prevented from being influenced; the scraping plate can be synchronously driven to move left and right to clean the filter screen, so that the filter screen is prevented from being blocked, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler economizers, in particular to a circular flue jacketed heat pipe economizer. Background Art

[0002] Economizer is a device installed at the bottom of the flue at the tail end of the boiler to recover the waste heat of the exhaust gas. It heats the boiler feed water into a heating surface of saturated water under drum pressure. Because it absorbs the heat of high-temperature flue gas, it reduces the exhaust temperature of the flue gas, saves energy and improves efficiency, so it is called economizer.

[0003] The existing patent with the authorization announcement number "CN201129709Y" discloses a circular flue jacket heat pipe economizer, including a flue pipe, which is characterized in that a jacket cylinder is sealed and arranged on the outside of the flue pipe wall, a heat pipe is connected to the wall of the flue pipe, the heat pipe part is inserted into the flue pipe cavity, and the rest of the part extends into the jacket cylinder, the lower part of the jacket cylinder is provided with a water inlet hole, and the upper part is provided with a water outlet. The vertical circular flue jacket heat pipe economizer has a novel design concept, and has the characteristics of reasonable structure, simple process, low flue gas resistance, high heat exchange efficiency, etc. It is installed in the circular vertical flue of small vertical coal-fired, oil-fired and steam-fired boilers. When the high-temperature flue gas passes through the flue, the medium water is heated by heat exchange through the heat pipe to achieve the effect of waste heat recovery. The flue gas exhaust temperature can be reduced to about 150°C, and the boiler thermal efficiency can be increased by about 10%;

[0004] However, there are the following deficiencies in this device:

[0005] 1. The above device fails to filter the flue gas when the flue gas is exchanging heat, causing the dust in the flue gas to easily adhere to the outside of the heat pipe, affecting the heat exchange effect of the heat pipe;

[0006] 2. When the above device is in use, the heat exchange water flow is not stirred, resulting in poor fluidity of the water flow, prone to uneven heating, and the water flow in some positions fails to fully exchange heat, thus affecting the heat exchange effect of the device. Utility Model Content

[0007] The utility model aims to provide a circular flue jacket heat pipe economizer to solve the existing problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circular flue jacket heat pipe economizer, comprising a base, a jacket shell is provided on the top of the base, a filter bin is provided in the middle of the bottom of the base, a heat exchange flue connected with the filter bin is provided on the inner side of the jacket shell, an air inlet pipe is provided on one side of the filter bin, a filter screen is provided on the top of the inner side of the filter bin, three groups of heat exchange tubes are provided on both sides of the heat exchange flue, a turntable is provided on the bottom of the jacket shell, and the turntable is sleeved on the outer side of the heat exchange flue, fixing rods are provided on both sides of the top of the turntable, multiple groups of stirring rods are provided on one side where two groups of fixing rods are close to each other, an outer gear ring is provided on the bottom of the turntable, a motor is provided on one side of the bottom of the base, a rotating rod is provided on the output end of the motor, a U-shaped rod is provided on the top of the rotating rod, a connecting rod extending into the jacket shell is provided on the top of the U-shaped rod, a gear meshed with the outer gear ring is provided on the top of the connecting rod, and a cleaning component is provided on the top of one side of the filter bin.

[0009] Preferably, the cleaning assembly includes a scraper, a movable rod and a hinged rod. The movable rod is sleeved on the top of one side of the filter bin, a scraper is provided on one side of the movable rod, and the outer side of the U-shaped rod is sleeved with a hinged rod hinged to the movable rod, which can automatically clean the filter screen to prevent the filter screen from being blocked.

[0010] Preferably, a water inlet pipe is provided at the bottom of one side of the jacket shell, and a drain pipe is provided on one side of the top of the jacket shell. The heat exchange water flow can enter the jacket shell through the water inlet pipe and can be discharged from the drain pipe after the heat exchange is completed.

[0011] Preferably, a collection box is provided at the bottom of the interior of the filter bin, and a bin door connected to the filter bin is provided at the bottom of one end of the base to facilitate the collection of filtered dust.

[0012] Preferably, flanges are provided on one side of the outer side of the air inlet pipe and on the top of the outer side of the heat exchange flue to facilitate connection to the boiler exhaust pipe.

[0013] Preferably, an annular groove is provided at the edge of the top of the inner part of the jacket shell, and sliding blocks matching with the annular groove are provided at the tops of the two groups of fixing rods to guide the fixing rods.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the circular flue jacket heat pipe economizer;

[0015] 1. Through the cooperation between the rotating rod, motor, filter, scraper, movable rod, U-shaped rod and hinged rod, the device can filter the flue gas through the filter when in use, reduce the contact of the heat pipe with dust, and prevent dust from being contaminated on the outside of the heat pipe to affect the heat exchange efficiency. When the device controls the fixed rod to stir the heat exchange water flow, it can simultaneously drive the scraper to move left and right to clean the filter, preventing the filter from being blocked, thereby improving the convenience of use;

[0016] 2. Through the cooperation between the stirring rod, the fixed rod, the outer gear ring, the gear, the rotating rod, the motor, the U-shaped rod and the connecting rod, when the device is in use, the fixed rod can be controlled to rotate, and the stirring rod can be used to stir the hot water flow to increase the fluidity of the hot water flow, which can ensure that the hot water flow is heated evenly and improve the heat exchange effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a front cross-sectional view of the utility model;

[0019] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure.

[0020] In the figure: 1. base; 2. air inlet pipe; 3. turntable; 4. heat exchange tube; 5. heat exchange flue; 6. stirring rod; 7. fixed rod; 8. outer gear ring; 9. gear; 10. rotating rod; 11. motor; 12. filter screen; 13. filter chamber; 14. scraper; 15. movable rod; 16. U-shaped rod; 17. hinged rod; 18. connecting rod; 19. jacket shell. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 The utility model provides an embodiment: a circular flue jacket heat pipe economizer, comprising a base 1, a jacket shell 19 is provided on the top of the base 1, a water inlet pipe is provided on the bottom of one side of the jacket shell 19, a drain pipe is provided on one side of the top of the jacket shell 19, and the heat exchange water flow can enter the jacket shell 19 through the water inlet pipe, and can be discharged from the drain pipe after the heat exchange is completed. A filter bin 13 is provided in the middle of the bottom of the base 1, and a heat exchange flue 5 connected with the filter bin 13 is provided on the inner side of the jacket shell 19, an air inlet pipe 2 is provided on one side of the filter bin 13, and a flange is provided on one side of the outer side of the air inlet pipe 2 and the top of the outer side of the heat exchange flue 5, which is convenient for connecting the boiler exhaust pipe, a filter screen 12 is provided on the top of the inner side of the filter bin 13, and three groups of heat exchange pipes 4 are provided on both sides of the heat exchange flue 5;

[0023] A turntable 3 is sleeved on the bottom of the jacket shell 19, and the turntable 3 is sleeved on the outside of the heat exchange flue 5. Fixed rods 7 are provided on both sides of the top of the turntable 3, and multiple groups of stirring rods 6 are provided on the side close to the two groups of fixed rods 7. An outer gear ring 8 is provided at the bottom of the turntable 3, and a motor 11 is provided on one side of the bottom of the base 1. A rotating rod 10 is provided at the output end of the motor 11. A U-shaped rod 16 is provided on the top of the rotating rod 10. A connecting rod 18 extending into the jacket shell 19 is provided on the top of the U-shaped rod 16. A gear 9 meshing with the outer gear ring 8 is provided on the top of the connecting rod 18. A cleaning component is provided on the top of one side of the filter bin 13.

[0024] The cleaning assembly includes a scraper 14, a movable rod 15 and a hinged rod 17. The movable rod 15 is sleeved on the top of one side of the filter bin 13, and a scraper 14 is provided on one side of the movable rod 15. The outer side of the U-shaped rod 16 is sleeved with a hinged rod 17 hinged to the movable rod 15. When the fixed rod 7 is controlled to rotate and the water flow in the jacket shell 19 is stirred, the scraper 14 can be synchronously driven to clean the filter screen 12; a collecting box is provided at the bottom of the filter bin 13, and a bin door connected to the filter bin 13 is provided at the bottom of one end of the base 1. The dust filtered by the device can be collected in the collecting box, and the bin door can be opened later to take out the collecting box for cleaning; an annular groove is provided at the edge of the top of the inner part of the jacket shell 19, and a slider matching the annular groove is provided at the top of the two groups of fixed rods 7. When the fixed rod 7 rotates, the slider can be driven to slide along the annular groove to improve its rotation stability.

[0025] Working principle: When the device is in use, the hot water flow can be transported into the jacket shell 19 through the water inlet pipe, and the boiler exhaust flue gas can enter the device from the air inlet pipe 2. The flue gas can be guided into the filter bin 13 through the air inlet pipe 2. After the flue gas enters the filter bin 13, the dust in the flue gas can be filtered through the filter screen 12. The filtered flue gas can enter the heat exchange flue 5 and contact the heat exchange pipe 4, and exchange heat with the hot water flow in the jacket shell 19, reducing the flue gas temperature while heating the water flow. The hot water after heat exchange can be discharged through the drain pipe and transported to the boiler for heating, so as to reduce the heating time of the boiler for the water flow and save fuel consumption. The flue gas after heat exchange can be discharged through the heat exchange flue 5;

[0026] When the device is exchanging heat, the motor 11 can be started to run, and the motor 11 can drive the rotating rod 10 to rotate, and then the rotating rod 10 drives the U-shaped rod 16 to rotate the connecting rod 18, and then the connecting rod 18 drives the gear 9, and the gear 9 drives the outer gear ring 8 to rotate the turntable 3. At this time, the turntable 3 can drive the two sets of fixed rods 7 to rotate along the heat exchange flue 5, and stir the hot water flow in the jacket shell 19 through the stirring rod 6, so that the water flow can evenly contact the heat exchange tube 4, thereby improving the heat exchange effect;

[0027] When the U-shaped rod 16 rotates, the movable rod 15 can be driven to move back and forth left and right through the connection of the hinged rod 17, and then the movable rod 15 drives the scraper 14, which can scrape and clean the filter 12 through the scraper 14 to scrape off the filtered dust and prevent the filter 12 from being blocked by dust. The scraped dust can automatically fall into the collection box at the bottom of the filter bin 13 for collection, and the bin door can be opened later to take out the collection box for cleaning.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A circular flue jacket heat pipe economizer, comprising a base (1), characterized in that: A jacket shell (19) is provided on the top of the base (1), a filter chamber (13) is provided in the middle of the bottom of the base (1), a heat exchange flue (5) connected to the filter chamber (13) is provided on the inner side of the jacket shell (19), an air inlet pipe (2) is provided on one side of the filter chamber (13), a filter screen (12) is provided on the top of the inner side of the filter chamber (13), three groups of heat exchange tubes (4) are provided on both sides of the heat exchange flue (5), a turntable (3) is provided on the bottom of the inner side of the jacket shell (19), and the turntable (3) is sleeved on the outer side of the heat exchange flue (5), and two sides of the top of the turntable (3) are provided A fixing rod (7), a plurality of stirring rods (6) are arranged on one side where two groups of the fixing rods (7) are close to each other, an outer tooth ring (8) is arranged at the bottom of the rotating disk (3), a motor (11) is arranged at one side of the bottom of the base (1), a rotating rod (10) is arranged at the output end of the motor (11), a U-shaped rod (16) is arranged at the top of the rotating rod (10), a connecting rod (18) extending into the jacket shell (19) is arranged at the top of the U-shaped rod (16), a gear (9) meshing with the outer tooth ring (8) is arranged at the top of the connecting rod (18), and a cleaning assembly is arranged at the top of one side of the filter bin (13).

2. A circular flue jacket heat pipe economizer according to claim 1, characterized in that: The cleaning assembly comprises a scraper (14), a movable rod (15) and a hinged rod (17); the movable rod (15) is sleeved on the top of one side of the filter bin (13); the scraper (14) is provided on one side of the movable rod (15); and the hinged rod (17) hingedly connected to the movable rod (15) is sleeved on the outer side of the U-shaped rod (16).

3. The circular flue jacket heat pipe economizer according to claim 1, characterized in that: A water inlet pipe is provided at the bottom of one side of the jacket shell (19), and a drain pipe is provided at one side of the top of the jacket shell (19).

4. The circular flue jacket heat pipe economizer according to claim 1, characterized in that: A collecting box is provided at the bottom of the interior of the filter bin (13), and a bin door communicating with the filter bin (13) is provided at the bottom of one end of the base (1).

5. The circular flue jacket heat pipe economizer according to claim 1, characterized in that: A flange is provided on one side of the outside of the air inlet pipe (2) and on the top of the outside of the heat exchange flue (5).

6. The circular flue jacket heat pipe economizer according to claim 1, characterized in that: An annular groove is provided at the edge of the top of the inner part of the jacket shell (19), and sliding blocks matching the annular groove are provided at the tops of the two groups of fixing rods (7).

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