Gas-fired boiler heat recovery device

Abstract

The utility model relates to the technical field of gas-fired boilers, in particular to a gas-fired boiler heat recovery device which comprises a gas-fired boiler, a heat recovery box is arranged on the right side of the gas-fired boiler, a partition plate is arranged in the middle of the inner side of the heat recovery box, and a water storage cavity and a filtering cavity are formed in the left side and the right side of the partition plate respectively. A vertically-placed spiral pipe is arranged on the inner side of the water storage cavity, and the upper end of the spiral pipe is connected with the gas-fired boiler through a smoke exhaust pipe. Smoke is conveyed through the spiral pipe, so that the retention time of the smoke is prolonged, heat of the smoke can be fully dissipated outwards, meanwhile, water is stored through the water storage cavity, it is guaranteed that water is fully heated, and the preheating effect of the water is greatly improved; and meanwhile, the stirring mechanism is used for stirring water in the water storage cavity so that the water can be fully heated, and therefore the flue gas heat recovery effect is greatly improved while the water preheating effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas boiler technical field especially relates to a gas boiler heat recovery device. BACKGROUND

[0002] Gas boiler includes gas boiling water boiler, gas hot water boiler, gas steam boiler, gas power boiler etc., wherein gas hot water boiler is also called gas heating boiler and gas bath boiler, obtains hot water and steam for production use through the heating of water in the boiler by gas, and the flue gas produced when the gas heats the boiler carries a large amount of heat, if not utilized, it will cause the waste of energy.

[0003] The patent with the publication number CN219141099U discloses a heat recovery device of a gas boiler, which belongs to the technical field of boiler heat recovery and utilization devices. The heat recovery device of the gas boiler is provided with a hot water tank on the boiler body, a preheating component on one side of the boiler body, and a heat preservation component on the other side of the boiler body. The preheating component is provided with a water inlet pipe, and the boiler body is provided with a smoke exhaust pipe. The smoke exhaust pipe can preheat the water in the water inlet pipe. The heat preservation component is provided with a water outlet pipe, and the hot water tank is provided with a steam pipe. The steam pipe can heat preserve the water outlet pipe. The heat recovery device has the advantages of preheating the cold water in the water inlet pipe by the combustion flue gas of the boiler body, and heat preserving the water outlet pipe by the water vapor generated in the hot water tank. Thus, the heat recovery and utilization of the heat discharged by the gas boiler are realized, the utilization rate of heat is increased, the energy loss is reduced, the resources are saved, and the energy-saving and environment-friendly purposes are achieved.

[0004] The heat recovery device of the gas boiler preheats the water flowing in the water inlet pipe by the flue gas when recovering heat, so as to realize the recovery of heat. However, the preheating effect on the water and the recovery effect on the heat in the flue gas are poor due to the limited residence time of the flowing water in the pipe and the limited residence time of the flue gas in the box. SUMMARY

[0005] The utility model discloses a kind of gas boiler heat recovery devices to solve the preheating effect of the heat recovery device of the gas boiler on water and the recovery effect of the heat in the flue gas are poor, and is presented.

[0006] In order to solve the above technical problems, the utility model is through the following technical scheme realizes: a gas boiler heat recovery device, including gas boiler, the right side of gas boiler is provided with heat recovery tank, the inside middle part of heat recovery tank is provided with baffle, and baffle's left and right sides are provided with water storage cavity and filter cavity respectively, the inside of water storage cavity is provided with spiral tube that places vertically, and the upper end of spiral tube is connected with gas boiler through smoke pipe, the left side wall of water storage cavity is fixed with water supplement pipe near the upper end position, and the inside bottom of water storage cavity is provided with submersible pump, the water outlet end of submersible pump is connected with gas boiler through water delivery pipe, the inside of the cylindrical chamber formed in spiral tube is provided with vertical stirring mechanism, and the lower end of spiral tube communicates with filter cavity through baffle, the inside of filter cavity is installed from bottom to top one side with filter assembly and purification assembly, and the upper end of filter cavity is fixed with gas outlet pipe, the outside of filter cavity right side wall is fixed with locking mechanism that carries out locking and fixing to purification assembly.

[0007] As a preferred scheme, the purification assembly comprises a right-opening mesh frame, the right end of the mesh frame is provided with an opening, and the upper and lower sides of the mesh frame are both provided with evenly arranged air passing holes, the inside of the mesh frame is filled with activated carbon particles, and the right end of the mesh frame is provided with a cover plate installed through the right side wall of the filter cavity, and the left side of the cover plate is provided with a clamping table clamped in the right end opening of the mesh frame.

[0008] As a preferred scheme, the locking mechanism comprises a fixed column, the left end of the fixed column is fixed with a threaded head, and a pressing plate is sleeved on the fixed column and presses the right side of the cover plate.

[0009] As a preferred scheme, the filter assembly comprises a fixed edge inserted on the right side wall of the filter cavity, the left side of the fixed edge is fixed with a mesh plate, the upper surface of the mesh plate is paved with filter cotton, and a plurality of fixed pins are inserted on the mesh plate and pass through the filter cotton.

[0010] As a preferred scheme, the stirring mechanism comprises a motor fixed on the upper surface of the upper side wall of the water storage cavity, the output shaft of the motor is fixed with a transmission rod through the upper side wall of the water storage cavity, and a plurality of stirring blades are arranged on the transmission rod in an up-down arrangement.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The smoke is transported through the spiral tube to prolong the retention time of the smoke, so that the heat of the smoke can be fully emitted outward, and the water is stored in the water storage cavity to ensure that the water is fully heated, thereby greatly improving the preheating effect of the water. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1It is the whole structure schematic view of the utility model;

[0014] Figure 2 It is the purification assembly schematic view of the utility model;

[0015] Figure 3 It is the locking mechanism schematic view of the utility model;

[0016] Figure 4 It is the filter assembly schematic view of the utility model;

[0017] Figure 5 It is the stirring mechanism schematic view of the utility model.

[0018] In the figure: 1, gas boiler;2, smoke pipe;3, water storage cavity;4, spiral pipe;5, stirring mechanism;51, motor;52, transmission rod;53, stirring blade;6, heat recovery tank;7, air outlet pipe;8, filter cavity;9, locking mechanism;91, threaded head;92, pressing plate;93, fixed column;10, purification assembly;101, net frame;102, air passage;103, activated carbon particles;104, clamping table;105, cover plate;11, filter assembly;111, filter cotton;112, fixed nail;113, net plate;114, fixed edge;12, partition;13, submersible pump;14, water delivery pipe. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0021] The foregoing description, for purposes of explanation, sets forth specific values and arrangements of components and steps that are subject to many options. The intent is to be accurate in describing the principles and novel features of the application. Thus, although the application has been described with reference to specific embodiments thereof, it will be apparent to those of ordinary skill in the art that a number of changes can be made to the embodiments described without departing from the spirit and scope of the application. For example, the various features of the application can be combined in any combination, where possible. Accordingly, the scope of the application is to be construed as encompassing modifications and variations of the specific examples described herein, subject only to the conditions of the prior art.

[0022] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0023] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0024] In addition, it should be noted that the use of "first", "second" and the like words to limit parts, only for the convenience of distinguishing the corresponding parts, if there is no further declaration, the above words have no special meaning, therefore, it cannot be understood as a limitation on the protection scope of the present application.

[0025] AsFigure 1 As shown in the figure, a gas boiler heat recovery device, including a gas boiler 1, the right side of the gas boiler 1 is provided with a heat recovery tank 6, the inner side of the heat recovery tank 6 is provided with a partition 12, and the left and right sides of the partition 12 are respectively provided with a water storage cavity 3 and a filter cavity 8, the inner side of the water storage cavity 3 is provided with a vertical spiral tube 4, and the upper end of the spiral tube 4 is connected with the gas boiler 1 through the smoke exhaust pipe 2, the left side wall of the water storage cavity 3 is fixed with a water replenishing pipe near the upper end, and the inner bottom of the water storage cavity 3 is provided with a submersible pump 13, the water outlet end of the submersible pump 13 is connected with the gas boiler 1 through the water delivery pipe 14, a vertical stirring mechanism 5 is arranged in the cylindrical cavity formed in the inner side of the spiral tube 4, and the lower end of the spiral tube 4 communicates with the filter cavity 8 through the partition 12, the filter assembly 11 and the purification assembly 10 are installed on one side of the inner side of the filter cavity 8 from bottom to top, and the upper end of the filter cavity 8 is fixed with the gas outlet pipe 7, the outer side of the right side wall of the filter cavity 8 is fixed with the locking mechanism 9 for locking and fixing the purification assembly 10, the flue gas is transported through the spiral tube 4 to prolong the retention time of the flue gas, so that the heat of the flue gas can be fully dissipated outward, and the water is stored in the water storage cavity 3 to ensure that the water is fully heated, thereby greatly improving the preheating effect of the water, and the water in the water storage cavity 3 is stirred by the stirring mechanism 5 to make the water fully heated, thereby improving the preheating effect of the water and greatly improving the heat recovery effect of the flue gas.

[0026] As shown in the figure, Figure 2 The purification assembly 10 includes a right opening net frame 101, the right end opening of the net frame 101 is provided, and the upper and lower sides of the net frame 101 are both provided with evenly arranged air passing holes 102, the inner side of the net frame 101 is filled with activated carbon particles 103, and the air passing holes 102 on the upper and lower sides realize the circulation of flue gas, at this time, the harmful substances in the flue gas are adsorbed and purified by the activated carbon particles 103, and the right end of the net frame 101 is provided with a cover plate 105 which is installed through the right side wall of the filter cavity 8, the left side of the cover plate 105 is provided with a clamping table 104 which is clamped in the right end port of the net frame 101, and the cover plate 105 is clamped in the right end port of the net frame 101 through the clamping table 104 to realize installation and fixation.

[0027] As shown in the figure, Figure 3 The locking mechanism 9 includes a fixed column 93, the left end of the fixed column 93 is fixed with a threaded head 91, and the fixed column 93 is sleeved with a pressing plate 92 which presses the right side of the cover plate 105, and the pressing plate 92 is rotated to press one end of the cover plate 105 to limit and lock the purification assembly 10 after installation on the heat recovery tank 6.

[0028] As shown in the figure, Figure 4As shown, the filter assembly 11 includes a fixed side 114 installed on the right side wall of the filter chamber 8. A mesh plate 113 is fixed on the left side of the fixed side 114, and filter cotton 111 is laid on the upper surface of the mesh plate 113. Multiple fixing nails 112 are inserted through the filter cotton 111 and fixed on the mesh plate 113. The filter cotton 111 is fixed on the mesh plate 113 by the fixing nails 112, so that the mesh plate 113 and the filter cotton 111 can filter particulate matter in the flue gas.

[0029] like Figure 5 As shown, the stirring mechanism 5 includes a motor 51 fixed to the upper surface of the upper side wall of the water storage cavity 3. The output shaft of the motor 51 passes through the upper side wall of the water storage cavity 3 and a transmission rod 52 is fixed thereon. Multiple stirring blades 53 arranged vertically are fixed to the outside of the transmission rod 52. The motor 51 drives the transmission rod 52 to drive the stirring blades 53 to stir the water in the water storage cavity 3, so that the water in the water storage cavity 3 is in a state of continuous surging, thereby achieving better and more uniform heating.

[0030] In this embodiment, when recovering heat from the gas-fired boiler, cold water is added to the water storage chamber 3 through the water supply pipe. At this time, the flue gas generated by the gas-fired boiler is sent to the spiral tube 4 through the exhaust pipe 2 and flows downward. The spiral tube 4 transfers the heat in the flue gas to the water in the water storage chamber 3 for heating. At the same time, the motor 51 drives the transmission rod 52 to drive the stirring blade 53 to stir the water in the water storage chamber 3, so that the water in the water storage chamber 3 is in a state of continuous surging, thereby making the water evenly heated. The heated water is sent to the boiler through the submersible pump 13 and the water supply pipe 14. The flue gas after heat recovery enters the filter chamber 8 and is filtered by the filter assembly 11 and purified by the purification assembly 10. Finally, it is discharged through the exhaust pipe 7, thereby completing the recovery of heat from the flue gas and the treatment of boiler flue gas.

[0031] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A gas boiler heat recovery device comprising a gas boiler (1), characterized by: The right side of the gas boiler (1) is provided with a heat recovery tank (6), the inner side middle part of the heat recovery tank (6) is provided with a partition (12), and the left and right sides of the partition (12) are respectively provided with a water storage cavity (3) and a filtering cavity (8), the inner side of the water storage cavity (3) is provided with a spiral pipe (4) placed vertically, and the upper end of the spiral pipe (4) is connected with the gas boiler (1) through the smoke exhaust pipe (2), the left side wall of the water storage cavity (3) is fixed with a water replenishing pipe near the upper end position, and the inner bottom of the water storage cavity (3) is provided with a submersible pump (13), the water outlet end of the submersible pump (13) is connected with the gas boiler (1) through the water delivery pipe (14), the cylindrical cavity formed in the inner side of the spiral pipe (4) is provided with a vertical stirring mechanism (5), and the lower end of the spiral pipe (4) communicates with the filtering cavity (8) through the partition (12), the inner side of the filtering cavity (8) is mounted with a filtering assembly (11) and a purification assembly (10) from bottom to top on one side, and the upper end of the filtering cavity (8) is fixed with an air outlet pipe (7), the outer side of the right side wall of the filtering cavity (8) is fixed with a locking mechanism (9) for locking and fixing the purification assembly (10).

2. A gas boiler heat recovery device according to claim 1, characterised in that: The purification assembly (10) comprises a net frame (101) opening to the right, the right end of the net frame (101) is provided with an opening, and the upper and lower sides of the net frame (101) are both provided with evenly arranged air passing holes (102), the inner side of the net frame (101) is filled with activated carbon particles (103), and the right end of the net frame (101) is installed with a cover plate (105) penetrating through the right side wall of the filtering cavity (8).

3. A gas boiler heat recovery device according to claim 2, characterised in that: The locking mechanism (9) comprises a fixed column (93), the left end of the fixed column (93) is fixed with a threaded head (91), and the fixed column (93) is sleeved with a pressing plate (92) pressing the right side of the cover plate (105).

4. A gas boiler heat recovery device according to claim 3, characterised in that: The filtering assembly (11) comprises a fixed edge (114) inserted on the right side wall of the filtering cavity (8), the left side of the fixed edge (114) is fixed with a mesh plate (113), and the upper surface of the mesh plate (113) is paved with filter cotton (111), and a plurality of fixed nails (112) fixedly inserted on the mesh plate (113) are inserted in the filter cotton (111).

5. A gas boiler heat recovery device according to claim 4, characterised in that: The stirring mechanism (5) comprises a motor (51) fixed on the upper surface of the upper side wall of the water storage cavity (3), the output shaft of the motor (51) is fixed with a transmission rod (52) penetrating through the upper side wall of the water storage cavity (3), and the outer side of the transmission rod (52) is fixed with a plurality of up-down arranged stirring blades (53).

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