Smoke heat recovery device in brick kiln production process

Abstract

The utility model belongs to the technical field of brick making, and particularly discloses a brick kiln production process flue gas heat recovery device which comprises a heat exchange box, a flue gas output branch pipe and a flue gas outlet pipe assembly. The heat exchange box is in a hollow box body shape with openings in the left side and the right side, an air outlet pipe and an air inlet pipe are connected to the openings in the left side and the right side of the heat exchange box correspondingly, and the multiple smoke output branch pipes penetrate through the heat exchange box and extend to the upper side and the lower side of the heat exchange box. By arranging the heat exchange box and the flue gas output branch pipe, high-temperature flue gas in the brick kiln passes through the heat exchange box when being exhausted, and air passes through the heat exchange box when the brick kiln sucks air from the outside, so that the outside air exchanges heat with the high-temperature flue gas, heat is brought back into the brick kiln, and waste of heat resources is reduced; and by arranging the filtering mechanism, when the smoke is exhausted, the smoke can be filtered, residues obtained after filtering can fall into the dust collecting box, residue discharging is reduced, and pollution to the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of brick making, in particular to a smoke heat recovery device in a brick kiln production process. Background Art

[0002] In the traditional brick kiln production process, a large amount of heat energy and flue gas will be directly discharged into the environment, which not only causes energy waste, but also causes serious environmental pollution. Therefore, how to effectively recycle and utilize these heat energy and flue gas, reduce environmental pollution, and improve energy utilization has become an urgent problem to be solved in the current brick kiln production industry.

[0003] Existing brick kiln flue gas treatment technologies mainly include wet scrubbing, electrostatic precipitator, bag filter and other methods. Although these methods can remove some pollutants in the flue gas, they cannot effectively recover the heat energy in the flue gas, and have low treatment efficiency, high equipment investment and operating costs. Utility Model Content

[0004] The purpose of the utility model is to provide a flue gas heat recovery device for a brick kiln production process, so as to solve the problems that the existing brick kiln flue gas treatment technologies proposed in the above background technology mainly include wet scrubbing, electrostatic precipitator, bag dust removal and the like. Although these methods can remove some pollutants in the flue gas, they cannot effectively recover the heat energy in the flue gas, and have low treatment efficiency, high equipment investment and operating costs.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a smoke heat recovery device in a brick kiln production process, comprising:

[0006] A heat exchange box, wherein the heat exchange box is in the shape of a hollow box with left and right openings, and the left and right openings of the heat exchange box are respectively connected to an air outlet pipe and an air inlet pipe;

[0007] A flue gas output branch pipe, wherein a plurality of flue gas output branch pipes are provided, and the flue gas output branch pipes penetrate the heat exchange box and extend to the upper and lower sides of the heat exchange box, and the lower end of the flue gas output branch pipe is connected to the smoke outlet of the brick kiln;

[0008] A smoke outlet pipe assembly, wherein the upper end of the smoke output branch pipe is connected to the smoke outlet pipe assembly, and a filtering mechanism is arranged on the pipeline of the smoke outlet pipe assembly.

[0009] Preferably, the heat exchange box comprises a rear box body and a front box cover, the left and right sides and the front of the rear box body are all open, and the front box cover is detachably connected to the front opening of the rear box body.

[0010] Preferably, the rear box body and the front box cover are both made of heat-insulating plastic material, and the inner side walls of the rear box body and the front box cover are provided with a foam insulation layer.

[0011] Preferably, the upper and lower surfaces of the rear box body are both provided with fixing rings, the fixing rings have rubber rings built in them, and the smoke output branch pipes are plugged into the rubber rings of the upper and lower fixing rings.

[0012] Preferably, the filtering mechanism includes a filter storage shell and a cover plate, a filter mesh plate is arranged inside the filter storage shell, the smoke outlet pipe assembly includes a smoke pipe 1 and a smoke pipe 2, the bottom end of the smoke pipe 1 is connected to a gathering connection cover, one end of the smoke pipe 1 is connected to the cover plate, one end of the gathering connection cover away from the smoke pipe 1 is connected to the upper end of the smoke output branch pipe, and one end of the smoke pipe 2 is connected to the filter storage shell.

[0013] Preferably, a support pressing block is provided on one side of the cover plate facing the filter screen plate, and the support pressing block is supported at four corners of the filter screen plate.

[0014] Preferably, an ash discharge groove is provided on the lower surface of the filter screen plate, and an ash discharge cover is detachably connected to the lower surface of the ash discharge groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By setting up a heat exchange box and a flue gas output branch pipe, the high-temperature flue gas in the brick kiln passes through the heat exchange box when it is discharged. When the brick kiln inhales air from the outside, the air passes through the heat exchange box, so that the outside air exchanges heat with the high-temperature flue gas and brings the heat back to the brick kiln, reducing the waste of heat resources;

[0017] By setting up a filtering mechanism, the flue gas can be filtered when it is discharged, and the filtered residue will fall into the dust collecting box, which reduces the discharge of residue and reduces pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the internal structure of the heat exchange box, fixing ring, air inlet pipe and air outlet pipe of the utility model;

[0020] Figure 3 It is a schematic diagram of the split structure of the smoke pipe 1, the smoke pipe 2, the filter storage shell, the cover plate, the filter screen plate, and the support block of the utility model.

[0021] In the figure: 1. heat exchange box; 2. fixing ring; 3. air inlet pipe; 4. air outlet pipe; 5. flue gas output branch pipe; 6. gathering connection cover; 7. flue gas pipe 1; 8. flue gas pipe 2; 9. filter storage shell; 10. cover plate; 11. filter screen plate; 12. support block. DETAILED DESCRIPTION

[0022] 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.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Embodiment 1:

[0025] See also Figure 1-3 , the utility model provides a technical solution: a flue gas heat recovery device, comprising: a heat exchange box 1, a flue gas output branch pipe 5, and a smoke outlet pipe assembly;

[0026] The heat exchange box 1 is in the shape of a hollow box with left and right sides opened. The left and right openings of the heat exchange box 1 are respectively connected with an outlet pipe 4 and an inlet pipe 3. A plurality of smoke output branch pipes 5 are provided. The smoke output branch pipes 5 penetrate the heat exchange box 1 and extend to the upper and lower sides of the heat exchange box 1. The lower end of the smoke output branch pipe 5 is connected to the smoke outlet of the brick kiln, and the upper end of the smoke output branch pipe 5 is connected to the smoke outlet pipe assembly. A filtering mechanism is provided on the pipeline of the smoke outlet pipe assembly.

[0027] Analysis of the above content: When in use, the air inlet pipe 3 and the air outlet pipe 4 supply air from the outside to the inside of the brick kiln (according to the needs of use, a suction fan can be added to the pipeline of the air outlet pipe 4), the air inlet pipe 3 outputs the external low-temperature air into the heat exchange box 1, and the smoke output branch pipe 5 also passes the high-temperature smoke from the inside of the smoke output branch pipe 5. The smoke output branch pipe 5 is made of copper. The high-temperature smoke releases heat to the low-temperature air outside the smoke output branch pipe 5 through the smoke output branch pipe 5, so that the temperature of the low-temperature air increases to obtain high-temperature air, and the high-temperature air is output through the air outlet pipe 4 into the brick kiln.

[0028] Embodiment 2:

[0029] See also Figure 1-3The utility model provides a technical solution based on the first embodiment: the heat exchange box 1 includes a rear box body and a front box cover, the left and right sides and the front of the rear box body are open, and the front box cover is detachably connected to the front opening of the rear box body. The rear box body and the front box cover are both made of heat-insulating plastic material, and the inner side walls of the rear box body and the front box cover are provided with a foam insulation layer.

[0030] Analysis of the above content: The rear box body and the front box cover are connected in a detachable manner, which is convenient for internal inspection and installation. The heat-insulating plastic material used has a good thermal insulation effect, and a foam insulation layer is provided to further improve the thermal insulation effect.

[0031] Embodiment three:

[0032] See also Figure 1-3 The utility model provides a technical solution based on the second embodiment: the upper and lower surfaces of the rear box body are both provided with fixing rings 2, the fixing rings 2 have rubber rings built in them, and the smoke output branch pipe 5 is inserted into the rubber rings of the upper and lower fixing rings 2.

[0033] Analysis of the above content: the rubber ring is supported between the inner wall of the fixing ring 2 and the outer wall of the smoke output branch pipe 5, and the rubber ring is squeezed and deformed, so that the fixing ring 2 and the smoke output branch pipe 5 are tightly connected.

[0034] Embodiment 4:

[0035] See also Figure 1-3 The utility model provides a technical solution based on the first embodiment: the filtering mechanism includes a filter storage shell 9 and a cover plate 10, a filter screen plate 11 is arranged inside the filter storage shell 9, the smoke outlet pipe assembly includes a smoke pipe 1 7 and a smoke pipe 2 8, the bottom end of the smoke pipe 1 7 is connected with a gathering connection cover 6, one end of the smoke pipe 1 7 is connected to the cover plate 10, the end of the gathering connection cover 6 away from the smoke pipe 1 7 is connected to the upper end of the smoke output branch pipe 5, and one end of the smoke pipe 2 8 is connected to the filter storage shell 9. A support block 12 is arranged on the side of the cover plate 10 facing the filter screen plate 11, and the support block 12 is supported at the four corners of the filter screen plate 11.

[0036] Analysis of the above content: the cover plate 10 is covered on the filter storage shell 9, and the right side of the filter storage shell 9 is open. The cover plate 10 closes and covers the right side opening of the filter storage shell 9, and the support pressing block 12 presses the filter mesh plate 11 on the inner left side of the filter storage shell 9, so that during the filtering process, the filter mesh plate 11 will not shake, and storage space for filtered dust is left on the right side of the filter mesh plate 11.

[0037] Embodiment five:

[0038] See also Figure 1-3The utility model provides a technical solution based on the fourth embodiment: an ash discharge groove is provided on the lower surface of the filter screen plate 11, and an ash discharge cover is detachably connected to the lower surface of the ash discharge groove.

[0039] Analysis of the above content: When it is necessary to clean the filtered dust, open the dust discharge cover, clean the dust discharge slot from the bottom through a brush or other structures, and clean up the filtered dust.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas heat recovery device for a brick kiln production process, characterized in that: include: A heat exchange box (1), the heat exchange box (1) being in the shape of a hollow box with left and right openings, the left and right openings of the heat exchange box (1) being respectively connected to an air outlet pipe (4) and an air inlet pipe (3); A flue gas output branch pipe (5), wherein a plurality of flue gas output branch pipes (5) are provided, wherein the flue gas output branch pipes (5) penetrate the heat exchange box (1) and extend to the upper and lower sides of the heat exchange box (1), and the lower end of the flue gas output branch pipe (5) is connected to the smoke outlet of the brick kiln; A smoke outlet pipe assembly, wherein the upper end of the smoke output branch pipe (5) is connected to the smoke outlet pipe assembly, and a filtering mechanism is arranged on the pipeline of the smoke outlet pipe assembly.

2. The device for recovering heat from flue gas during brick kiln production process according to claim 1, characterized in that: The heat exchange box (1) comprises a rear box body and a front box cover, the left and right sides and the front of the rear box body are all open, and the front box cover is detachably connected to the front opening of the rear box body.

3. The device for recovering heat from flue gas during brick kiln production process according to claim 2, characterized in that: The rear box body and the front box cover are both made of heat-insulating plastic material, and the inner side walls of the rear box body and the front box cover are provided with foam insulation layers.

4. A heat recovery device for flue gas in a brick kiln production process according to claim 2 or 3, characterized in that: The upper and lower surfaces of the rear box body are both provided with fixing rings (2), the fixing rings (2) have rubber rings built in them, and the smoke output branch pipes (5) are plugged into the rubber rings of the upper and lower fixing rings (2).

5. The device for recovering heat from flue gas during brick kiln production process according to claim 1, characterized in that: The filtering mechanism comprises a filtering storage shell (9) and a cover plate (10), a filtering mesh plate (11) is arranged inside the filtering storage shell (9), the smoke outlet pipe assembly comprises a smoke pipe 1 (7) and a smoke pipe 2 (8), the bottom end of the smoke pipe 1 (7) is connected with a gathering connection cover (6), one end of the smoke pipe 1 (7) is connected to the cover plate (10), one end of the gathering connection cover (6) away from the smoke pipe 1 (7) is connected to the upper end of the smoke output branch pipe (5), and one end of the smoke pipe 2 (8) is connected to the filtering storage shell (9).

6. The device for recovering heat from flue gas during brick kiln production process according to claim 5, characterized in that: A support pressing block (12) is provided on one side of the cover plate (10) facing the filter screen plate (11), and the support pressing block (12) is supported at four corners of the filter screen plate (11).

7. The device for recovering heat from flue gas during brick kiln production process according to claim 5, characterized in that: The lower surface of the filter screen plate (11) is provided with an ash discharge groove, and the lower surface of the ash discharge groove is detachably connected with an ash discharge cover.

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