Flue gas heat recycling device

Abstract

The utility model relates to the technical field of heat recycling, and discloses a flue gas heat recycling device which comprises an installation box, a heat recycling mechanism is arranged in the installation box, a flue gas filtering mechanism is arranged below the left side of the installation box, and the heat recycling mechanism comprises a metal heating water tank. And the metal heating water tank is fixedly mounted in an inner cavity of the mounting box. According to the stirring device, the metal heating water tank, the gas guide pipe, the connector, the metal heat conduction pipe, the graphite heat conduction sheet, the water inlet pipe and the water outlet pipe are matched, so that water in the metal heating water tank can be conveniently heated by utilizing flue gas in the metal heat conduction pipe; and water in the metal heating water tank can be conveniently stirred, so that the water can be uniformly heated, heat loss is avoided, the effect of recycling smoke heat is further achieved, and the use efficiency of waste heat energy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery and utilization, and more specifically to a flue gas heat recovery and utilization device. Background Art

[0002] Waste heat refers to the sensible heat and latent heat that are not reasonably utilized in the original design of the energy-consuming devices of industrial enterprises that have been put into operation due to the limitations of historical, technological, and conceptual factors. It includes waste heat from high-temperature exhaust gas, waste heat from cooling media, waste heat from waste steam and waste water, waste heat from high-temperature products and slag, waste heat from chemical reactions, and waste heat from combustible waste gas, waste liquid, and waste materials. According to the survey, the total waste heat resources of various industries account for about 17% to 67% of their total fuel consumption, and the recyclable waste heat resources account for about 60% of the total waste heat resources.

[0003] For example, Chinese patent application number "CN201610458862.8" discloses a heat recovery and utilization device for a boiler flue gas channel, including a boiler provided with a flue gas channel and a source water bucket for supplying water to the boiler, characterized in that it also includes a heat recovery water jacket placed on the flue gas channel, the heat recovery water jacket is provided with a water inlet and a water outlet, and the heat recovery water jacket is provided with a circulating water channel connecting the water inlet and the water outlet, the water inlet is connected to a water source through an inlet pipe, and a pump is provided on the inlet pipe, and the water outlet is connected to the source water bucket through an outlet pipe. The present invention adds a heat recovery water jacket to the flue gas channel of the boiler, recovers the heat in the flue gas channel and uses it to heat the water flowing into the source water bucket. When this part of water is supplied to the boiler, it can greatly increase the heating temperature in the boiler, saving the fuel loss corresponding to this part of the temperature, thereby saving energy.

[0004] After the product is improved, this boiler flue gas channel heat recovery and utilization device is convenient for utilizing the heat of the flue gas to heat water and realize the effect of heat recovery and utilization, but it is not convenient for filtering and purifying the flue gas. The flue gas burned by the boiler usually contains a large number of impurity particles that are not fully burned. For example, after the heat of the flue gas is utilized, when the hot gas is discharged into the air, the impurity particles in the flue gas float in the air, which can easily cause environmental pollution. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a flue gas heat recovery and utilization device to solve the problems existing in the above-mentioned background technology.

[0006] The utility model provides the following technical solution: a flue gas heat recovery device, comprising a mounting box, a heat recovery mechanism is arranged inside the mounting box, and a flue gas filtering mechanism is arranged below the left side of the mounting box.

[0007] The heat recovery mechanism includes a metal heating water tank, which is fixedly installed in the inner cavity of a mounting box. A graphite heat conducting sheet is fixedly connected to the outer wall of the metal heating water tank. A metal heat conducting pipe is provided in the inner cavity of the mounting box. The metal heat conducting pipe is wound around the outer wall of the graphite heat conducting sheet. A plurality of stirring blades are provided inside the metal heating water tank.

[0008] The smoke filtering mechanism includes a filter box, a smoke pipe is fixedly connected to the middle of the left side of the filter box, a filter frame is movably sleeved on the inner cavity of the filter box, a metal filter is fixedly installed on the left side of the inner cavity of the filter frame, an activated carbon purification net is fixedly installed on the right side of the inner cavity of the filter frame, a positioning groove is opened at the bottom of the inner wall of the filter box, an iron sheet is fixedly connected to the bottom of the inner cavity of the positioning groove, a magnetic sheet is fixedly connected to the bottom of the filter frame, the outer wall of the magnetic sheet is movably inserted into the inner cavity of the positioning groove, and the bottom of the magnetic sheet is magnetically connected to the top of the iron sheet.

[0009] Furthermore, a mounting opening is provided at the top of the filter box, a closing plate is movably sleeved inside the mounting opening, the bottom of the closing plate is fixedly connected to the top of the filter frame, and a handle is fixedly connected to the top of the closing plate.

[0010] Furthermore, a sealing sleeve is fixedly embedded inside the installation opening, and the inner wall of the sealing sleeve is movably sleeved on the outer wall of the closing plate.

[0011] Furthermore, an air duct is fixedly connected to the middle of the right side of the filter box, one end of the air duct extends to the lower left side of the inner cavity of the installation box and is fixedly connected to a connecting head, one end of the metal heat pipe is fixedly connected to the right end of the connecting head, and the other end of the metal heat pipe extends to the upper right side of the installation box.

[0012] Furthermore, a motor is fixedly installed in the middle of the top of the installation box, the output end of the motor extends to the inner cavity of the installation box and is fixedly connected to a rotating shaft, the outer wall of the rotating shaft is rotatably sleeved on the middle of the top of the metal heating water tank, one end of the rotating shaft extends to the inner cavity of the metal heating water tank, and one end of the multiple stirring blades is fixedly connected to the outer wall of the rotating shaft.

[0013] Furthermore, a water inlet pipe is fixedly connected to the right side of the top of the metal heating water tank, one end of which extends to the outside of the installation box, and an inlet valve is installed on the inlet pipe. A water outlet pipe is fixedly installed in the middle of the bottom of the metal heating water tank, one end of which extends to the bottom of the installation box, and a water outlet valve is installed on the outlet pipe.

[0014] Furthermore, four corners of the outer wall of the installation box are fixedly connected with installation plates, and the installation plates are provided with installation holes.

[0015] Technical effects and advantages of the utility model:

[0016] 1. The utility model uses a filter box, a filter frame, a metal filter, an activated carbon purification net, a closing plate, a handle, a sealing sleeve, a positioning groove, a magnetic sheet and an iron sheet to facilitate filtering and purifying the smoke discharged from the smoke pipe, thereby preventing the impurity particles in the smoke from floating in the air and causing environmental pollution when the smoke is discharged, and conveniently taking out the filter frame, the metal filter and the activated carbon purification net from the inside of the filter box, conveniently cleaning the impurities on the metal filter and the activated carbon purification net, and conveniently replacing the filter frame, the metal filter and the activated carbon purification net.

[0017] 2. The utility model adopts a metal heating water tank, an air guide pipe, a connector, a metal heat pipe, a graphite heat conductive sheet, a water inlet pipe and a water outlet pipe to facilitate heating the water inside the metal heating water tank with the flue gas inside the metal heat conductive pipe, and facilitates stirring the water inside the metal heating water tank through the cooperation of a motor, a rotating shaft and a stirring blade, so that the water can be heated evenly and heat loss can be avoided, thereby realizing the effect of flue gas heat recovery and improving the efficiency of waste heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic cross-sectional view of the filter box and filter frame structure of the utility model.

[0020] Figure 3 It is a schematic cross-sectional view of the side structure of the filter box of the utility model.

[0021] Figure 4 The utility model is a schematic cross-sectional view of the graphite heat conducting sheet and the metal heating water tank structure.

[0022] The accompanying drawings are marked as follows: 1. Installation box; 2. Heat recovery and utilization mechanism; 3. Flue gas filtering mechanism; 4. Flue gas pipe; 5. Installation plate; 21. Metal heating water tank; 22. Air guide pipe; 23. Connector; 24. Metal heat pipe; 25. Graphite heat conductive plate; 26. Motor; 27. Rotating shaft; 28. Stirring blade; 211. Water inlet pipe; 212. Water outlet pipe; 31. Filter box; 32. Filter frame; 33. Metal filter screen; 321. Activated carbon purification net; 34. Closing plate; 35. Handle; 36. Sealing sleeve; 37. Positioning groove; 38. Magnetic sheet; 39. Iron sheet. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The flue gas heat recovery and utilization device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0024] Embodiment 1:

[0025] like Figure 1-4 As shown, a flue gas heat recovery and utilization device comprises an installation box 1, a flue gas filtering mechanism 3 is arranged at the lower part of the left side of the installation box 1, the flue gas filtering mechanism 3 comprises a filter box 31, a flue gas pipe 4 is fixedly connected to the middle part of the left side of the filter box 31, a filter frame 32 is movably sleeved in the inner cavity of the filter box 31, a metal filter screen 33 is fixedly installed on the left side of the inner cavity of the filter frame 32, an activated carbon purification screen 321 is fixedly installed on the right side of the inner cavity of the filter frame 32, a positioning groove 37 is opened at the bottom of the inner wall of the filter box 31, and the bottom of the inner cavity of the positioning groove 37 is fixedly connected to the inner cavity of the filter box 31. An iron sheet 39 is connected, a magnetic sheet 38 is fixedly connected to the bottom of the filter frame 32, the outer wall of the magnetic sheet 38 is movably inserted into the inner cavity of the positioning groove 37, the bottom of the magnetic sheet 38 is magnetically connected to the top of the iron sheet 39, a mounting opening is opened at the top of the filter box 31, a closing plate 34 is movably sleeved inside the mounting opening, the bottom of the closing plate 34 is fixedly connected to the top of the filter frame 32, a handle 35 is fixedly connected to the top of the closing plate 34, a sealing sleeve 36 is fixedly inlaid inside the mounting opening, and the inner wall of the sealing sleeve 36 is movably sleeved on the outer wall of the closing plate 34.

[0026] In this embodiment, by setting the flue gas pipe 4, it is convenient to discharge the flue gas generated when the boiler is working into the interior of the filter box 31, and the impurity particles in the flue gas that are completely burned are filtered through the metal filter 33, and the flue gas is purified by the activated carbon purification net 321, so as to prevent the impurity particles in the flue gas from floating in the air and causing environmental pollution when the flue gas is discharged. When the filter box 31 is used for a long time, the closing plate 34, the filter frame 32, the metal filter 33, the activated carbon purification net 321 and the magnetic sheet 38 can be taken out from the interior of the filter box 31 through the handle 35, which is convenient for cleaning. The metal filter 33 and the activated carbon purification net 321 are cleaned or replaced. After cleaning or replacement, the staff inserts the filter frame 32 into the interior of the filter box 31 through the installation port, and makes the closing plate 34 cover the inner wall of the installation port and the sealing sleeve 36. The setting of the sealing sleeve 36 can increase the sealing between the closing plate 34 and the installation port. At the same time, the filter frame 32 drives the magnetic sheet 38 to insert into the interior of the positioning groove 37, so that the magnetic sheet 38 and the iron sheet 39 are magnetically adsorbed together, which makes it easy to fix the filter frame 32, thereby increasing the stability of the filter frame 32 inside the filter box 31.

[0027] Embodiment 2:

[0028] like Figure 1-4 As shown, a heat recovery mechanism 2 is provided inside the installation box 1, and the heat recovery mechanism 2 includes a metal heating water tank 21, which is fixedly installed in the inner cavity of the installation box 1, and a graphite heat conductive sheet 25 is fixedly connected to the outer wall of the metal heating water tank 21, and a metal heat conductive pipe 24 is provided in the inner cavity of the installation box 1, and the metal heat conductive pipe 24 is wound around the outer wall of the graphite heat conductive sheet 25, and a plurality of stirring blades 28 are provided inside the metal heating water tank 21, and an air guide pipe 22 is fixedly connected to the middle of the right side of the filter box 31, and one end of the air guide pipe 22 extends to the lower left side of the inner cavity of the installation box 1 and is fixedly connected to a connector 23, and one end of the metal heat conductive pipe 24 is fixedly connected to the right end of the connector 23, and the other end of the metal heat conductive pipe 24 extends to the upper right side of the installation box 1, and the middle of the top of the installation box 1 A motor 26 is fixedly installed, and the output end of the motor 26 extends to the inner cavity of the installation box 1 and is fixedly connected to a rotating shaft 27. The outer wall of the rotating shaft 27 is rotatably sleeved on the middle part of the top of the metal heating water tank 21, and one end of the rotating shaft 27 extends to the inner cavity of the metal heating water tank 21. One ends of multiple stirring blades 28 are fixedly connected to the outer wall of the rotating shaft 27. An inlet pipe 211 is fixedly connected to the right side of the top of the metal heating water tank 21, and one end of the inlet pipe 211 extends to the outside of the installation box 1, and an inlet valve is installed on the inlet pipe 211. A water outlet pipe 212 is fixedly installed in the middle part of the bottom of the metal heating water tank 21, and one end of the outlet pipe 212 extends to the bottom of the installation box 1, and a water outlet valve is installed on the outlet pipe 212. The four corners of the outer wall of the installation box 1 are fixedly connected to mounting plates 5, and mounting holes are opened on the mounting plates 5.

[0029] In this embodiment, the installation box 1 is conveniently fixedly installed by the arrangement of the installation plate 5, and the air duct 22 and the metal heat-conducting pipe 24 are conveniently connected by the arrangement of the connecting head 23. The flue gas after filtering and purification is conveniently discharged into the metal heat-conducting pipe 24 through the air duct 22. The metal heat-conducting pipe 24 and the graphite heat-conducting plate 25 are conveniently arranged to transfer heat, so that the water inside the metal heating water tank 21 is heated by the flue gas inside the metal heat-conducting pipe 24, thereby realizing the effect of flue gas heat recovery and utilization.

[0030] In summary, if Figure 1-4 As shown, the flue gas heat recovery and utilization device, when in use, discharges the flue gas into the interior of the filter box 31 through the flue gas pipe 4, and filters and purifies the flue gas through the metal filter 33 and the activated carbon purification net 321, and then discharges the filtered and purified flue gas into the interior of the metal heat conducting pipe 24 through the air conducting pipe 22 and the connector 23, and the heat in the flue gas is transferred to the graphite heat conducting sheet 25 through the metal heat conducting pipe 24, and the thermal conductivity of the graphite heat conducting sheet 25 is used to heat the water inside the metal heating water tank 21, and at the same time, the motor 26 drives the rotating shaft 27 and the stirring blade 28 to rotate, so as to heat the metal heating water tank 21. The water inside the water tank 21 is evenly stirred so that the water is heated more evenly, thereby realizing the effect of flue gas heat recovery and utilization. The flue gas can then be discharged through one end of the metal heat pipe 24. After the water inside the metal heating water tank 21 is heated, the user can open the water outlet valve to discharge the water inside the metal heating water tank 21 through the water outlet pipe 212, and hot water can be used. When adding water to the metal heating water tank 21, the staff can open the water inlet valve and inject water into the metal heating water tank 21 through the water inlet pipe 211, thereby realizing the function of adding water to the metal heating water tank 21.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0032] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A flue gas heat recovery device, comprising an installation box (1), characterized in that: A heat recovery mechanism (2) is provided inside the installation box (1), and a smoke filtering mechanism (3) is provided below the left side of the installation box (1); The heat recovery mechanism (2) comprises a metal heating water tank (21), the metal heating water tank (21) is fixedly installed in the inner cavity of the installation box (1), the outer wall of the metal heating water tank (21) is fixedly connected to a graphite heat conducting sheet (25), the inner cavity of the installation box (1) is provided with a metal heat conducting pipe (24), the metal heat conducting pipe (24) is wound around the outer wall of the graphite heat conducting sheet (25), and a plurality of stirring blades (28) are provided inside the metal heating water tank (21); The smoke filtering mechanism (3) comprises a filter box (31), the middle part of the left side of the filter box (31) is fixedly connected to a smoke pipe (4), the inner cavity of the filter box (31) is movably sleeved with a filter frame (32), the left side of the inner cavity of the filter frame (32) is fixedly installed with a metal filter screen (33), the right side of the inner cavity of the filter frame (32) is fixedly installed with an activated carbon purification screen (321), the bottom of the inner wall of the filter box (31) is provided with a positioning groove (37), the bottom of the inner cavity of the positioning groove (37) is fixedly connected with an iron sheet (39), the bottom of the filter frame (32) is fixedly connected with a magnetic sheet (38), the outer wall of the magnetic sheet (38) is movably inserted into the inner cavity of the positioning groove (37), and the bottom of the magnetic sheet (38) is magnetically connected to the top of the iron sheet (39).

2. The flue gas heat recovery device according to claim 1, characterized in that: The top of the filter box (31) is provided with a mounting opening, the interior of the mounting opening is movably sleeved with a closing plate (34), the bottom of the closing plate (34) is fixedly connected to the top of the filter frame (32), and the top of the closing plate (34) is fixedly connected to a handle (35).

3. The flue gas heat recovery device according to claim 2, characterized in that: A sealing sleeve (36) is fixedly embedded inside the installation opening, and the inner wall of the sealing sleeve (36) is movably sleeved on the outer wall of the closing plate (34).

4. The flue gas heat recovery device according to claim 1, characterized in that: An air guide pipe (22) is fixedly connected to the middle of the right side of the filter box (31), one end of the air guide pipe (22) extends to the lower left side of the inner cavity of the installation box (1) and is fixedly connected to a connector (23), one end of the metal heat conduction pipe (24) is fixedly connected to the right end of the connector (23), and the other end of the metal heat conduction pipe (24) extends to the upper right side of the installation box (1).

5. The flue gas heat recovery device according to claim 1, characterized in that: A motor (26) is fixedly installed in the middle of the top of the installation box (1), the output end of the motor (26) extends to the inner cavity of the installation box (1) and is fixedly connected to a rotating shaft (27), the outer wall of the rotating shaft (27) is rotatably sleeved on the middle of the top of the metal heating water tank (21), one end of the rotating shaft (27) extends to the inner cavity of the metal heating water tank (21), and one end of the plurality of stirring blades (28) is fixedly connected to the outer wall of the rotating shaft (27).

6. The flue gas heat recovery device according to claim 1, characterized in that: A water inlet pipe (211) is fixedly connected to the right side of the top of the metal heating water tank (21), one end of the water inlet pipe (211) extends to the outside of the installation box (1), and a water inlet valve is installed on the water inlet pipe (211). A water outlet pipe (212) is fixedly installed in the middle of the bottom of the metal heating water tank (21), one end of the water outlet pipe (212) extends to the bottom of the installation box (1), and a water outlet valve is installed on the water outlet pipe (212).

7. The flue gas heat recovery device according to claim 1, characterized in that: The four corners of the outer wall of the installation box (1) are fixedly connected with installation pieces (5), and the installation pieces (5) are provided with installation holes.

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