Waste gas heat energy purifying and recycling device

Abstract

The utility model discloses a waste gas heat energy purifying and recycling device which comprises a box body, a fresh air outlet, a fresh air inlet, a waste gas inlet, a waste gas outlet, a heat recycling structure, an oil collecting box, a valve and supporting legs, and the four supporting legs are symmetrically arranged at the four top corners of the bottom of the box body through bolts respectively; and the heat recovery structure is arranged in the box body. The waste gas heat energy purifying and recycling device is simple in structure and convenient to install, heat energy (temperature) of exhausted waste gas can be recycled according to the heat exchange principle only by correspondingly connecting the connectors to an air outlet and an air inlet of baking equipment, and the heat energy recycling rate is gt; the power consumption for heating is reduced, and the energy is relatively saved gt; = 30%; moreover, the device has certain oil stain collecting and separating functions, oil stains can be conveniently and intensively collected and cleaned, and oil stain accumulation of the main exhaust pipeline is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment equipment, in particular to a device for purifying, recycling and utilizing the heat energy of waste gas. Background Technique

[0002] At present, most industrial baking equipment discharges waste gas through a centralized pipeline direct discharge method, resulting in a waste of about 80% of the heat relative to the set temperature of the oven itself being discharged through the pipeline. When the oven replenishes fresh air at normal temperature (about 30°C), it must continuously heat up to ensure constant temperature, consuming a large amount of electric energy at the same time; moreover, the liquefied reverse flow of volatile gases will pollute the equipment or production items, and some volatile gases solidify and accumulate in the pipeline for a long time, making it difficult to clean the pipeline. The specific problems are as follows:

[0003] (1) The direct discharge of waste gas from industrial baking equipment leads to a waste of about 80% of the heat relative to the set temperature of the oven itself, and further causes the oven to consume a large amount of electric energy when replenishing fresh air at normal temperature (about 30°C);

[0004] (2) The liquefaction of volatile gases will cause reverse flow and pollute the equipment or production items, and after some volatile gases solidify, they will accumulate in the pipeline for a long time, resulting in difficult pipeline cleaning. Summary of the Invention

[0005] In view of the above technical deficiencies, the purpose of the utility model is to provide a waste gas heat energy purification and recycling device, which has a simple structure and is easy to install, has a certain function of oil stain collection and partition, is convenient for centralized collection and cleaning of oil stains, and reduces the accumulation of oil stains in the main exhaust pipeline.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a waste gas heat energy purification and recycling device, which includes a box body, a fresh air outlet, a fresh air inlet, a waste gas discharge inlet, a waste gas discharge outlet, a heat recovery structure, an oil collecting box, a valve and support feet. At the four top corner positions at the bottom of the box body, a support foot is symmetrically arranged through bolts respectively; the heat recovery structure is placed inside the box body, and both ends of the heat recovery structure are respectively connected to the left side wall and the right side wall of the box body through bolts in a one-to-one correspondence; the fresh air outlet is installed in the middle position of the left side wall of the box body through bolts; the fresh air inlet is installed in the middle position of the left side wall of the box body through bolts; the waste gas discharge outlet is arranged at a position near the right end in the middle of the front side wall of the box body; the waste gas discharge inlet is arranged at a position near the left end in the middle of the top plate of the box body; the oil collecting box is arranged at a position near the right end in the middle of the bottom plate of the box body; a through hole is opened at a position near the bottom on the right side of the oil collecting box, and the oil collecting box is communicated with the valve through the through hole for convenient oil stain cleaning;

[0008] The heat recovery structure is composed of heat exchange branch pipes and left and right side plates correspondingly arranged on the left and right sides of the square pipe, which are welded together; several heat exchange branch pipes are evenly distributed inside the square pipe, and both ends of the heat exchange branch pipes are correspondingly connected to the left and right side plates respectively; several through holes that are in one-to-one correspondence and cooperate with the heat exchange branch pipes are respectively opened on the left and right side plates.

[0009] The tail end of the exhaust gas outlet extends into the interior of the box body and communicates with the front plate in the square pipe; the tail end of the exhaust gas inlet extends into the interior of the box body and communicates with the top plate in the square pipe; the tail end of the oil collecting box extends into the interior of the box body and communicates with the bottom plate in the square pipe.

[0010] Preferably, the fresh air inlet is composed of a frustum-shaped pipe and a bent pipe, and a first base that cooperates with the edge of the tail of the first frustum-shaped pipe is provided at the tail of the first frustum-shaped pipe; the fresh air outlet is composed of a second frustum-shaped pipe and a straight pipe, and a second base that cooperates with the edge of the tail of the second frustum-shaped pipe is provided at the tail of the second frustum-shaped pipe; the shapes and sizes of the first frustum-shaped pipe and the second frustum-shaped pipe are the same, and the shapes and sizes of the first base and the second base are the same; a square opening is symmetrically opened at the center positions of the left and right side walls of the box body respectively; the size of the square opening is smaller than the size of the first base.

[0011] Preferably, the lengths and widths of the left and right side plates are the same as the lengths and widths of the first base.

[0012] Preferably, the second base, the left wall plate and the left side plate are sequentially connected by bolts; the first base, the right wall plate and the right side plate are sequentially connected by bolts.

[0013] Preferably, the exhaust gas inlet and the exhaust gas outlet have the same shape and size, and are both communicated by the cooperation of a bent pipe and a straight pipe.

[0014] Preferably, the opening of the fresh air outlet faces left; the opening of the fresh air inlet faces up; the opening of the exhaust gas inlet faces forward; the opening of the exhaust gas outlet faces up.

[0015] Preferably, a heat insulation layer is provided on the outer wall of the box body.

[0016] Preferably, the box body is installed on an oven, and the support feet in the box body are connected to the top surface of the oven by bolts; the fresh air outlet is communicated with the fresh air inlet pipe of the oven; the exhaust gas inlet is communicated with the exhaust gas outlet pipe of the oven.

[0017] The beneficial effects of the present utility model are as follows: The waste gas heat energy purification, recovery and utilization device in the present utility model has a simple structure and is easy to install. Only by correspondingly connecting the interfaces to the exhaust port and the air inlet of the baking equipment, the heat energy (temperature) of the exhausted waste gas can be recovered and utilized by using the heat exchange principle. The heat energy recovery rate >= 80%, reducing the heating power consumption, and relatively saving energy >= 30%; moreover, this device has a certain function of oil stain collection and isolation, which is convenient for centralized collection and cleaning of oil stains, and reduces the accumulation of oil stains in the main exhaust duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 FIG. is a schematic structural diagram of a waste gas heat energy purification, recovery and utilization device provided by an embodiment of the present utility model;

[0020] Figure 2 For Figure 1 FIG. is a schematic structural diagram of the middle box body;

[0021] Figure 3 For Figure 1 FIG. is the front view (a) of the heat recovery structure in the middle, and its side view (b).

[0022] Description of the reference numerals:

[0023] Box body 1, fresh air outlet 2, fresh air inlet 3, waste gas inlet 4, waste gas outlet 5, heat recovery structure 6, oil collecting box 7, valve 8, support feet 9;

[0024] Square pipe 601, left side plate 602, right side plate 603, heat exchange branch pipe 604. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] Embodiment 1, as Figures 1 to 3As shown in the figure, an exhaust gas heat energy purification, recovery and utilization device includes a box body 1, a fresh air outlet 2, a fresh air inlet 3, an exhaust gas inlet 4, an exhaust gas outlet 5, a heat recovery structure 6, an oil collecting box 7, a valve 8 and support feet 9. At the four corner positions at the bottom of the box body 1, a support foot 9 is symmetrically arranged through bolts respectively; the heat recovery structure 6 is placed inside the box body 1, and both ends of the heat recovery structure 6 are respectively connected to the left side wall and the right side wall of the box body 1 through bolts in a one-to-one correspondence; the fresh air outlet 2 is installed in the middle position of the left side wall of the box body 1 through bolts; the fresh air inlet 3 is installed in the middle position of the right side wall of the box body 1 through bolts; the exhaust gas outlet 4 is arranged near the right end in the middle of the front side wall of the box body 1; the exhaust gas inlet 5 is arranged near the left end in the middle of the top plate of the box body 1; the oil collecting box 7 is arranged near the right end in the middle of the bottom plate of the box body 1; a through port is opened near the bottom position on the right side of the oil collecting box 7, and the oil collecting box 7 is communicated with the valve 8 through the through port to facilitate the cleaning of oil stains;

[0027] Furthermore, the heat recovery structure 6 is composed of heat exchange branch pipes 604 and left side plates 602 and right side plates 603 correspondingly arranged on the left and right sides of the square pipe 601, which are welded together; several heat exchange branch pipes 604 are evenly distributed inside the square pipe 601, and both ends of the heat exchange branch pipes 604 are respectively connected to the left side plate 602 and the right side plate 603 in a one-to-one correspondence; several through holes that cooperate with the heat exchange branch pipes 604 in a one-to-one correspondence are respectively opened on the left side plate 602 and the right side plate 603;

[0028] Even further, the tail end of the exhaust gas outlet 5 extends into the box body 1 and is communicated with the front plate in the square pipe 601; the tail end of the exhaust gas inlet 4 extends into the box body 1 and is communicated with the top panel in the square pipe 601; the tail end of the oil collecting box 7 extends into the box body 1 and is communicated with the bottom panel in the square pipe 601.

[0029] Furthermore, in the embodiment, as Figure 1 shown, the fresh air inlet 2 is composed of a first frustum-shaped pipe and a bent pipe, and a first base that cooperates with the edge of the tail of the first frustum-shaped pipe is provided at the tail of the first frustum-shaped pipe; the fresh air outlet 3 is composed of a second frustum-shaped pipe and a straight pipe, and a second base that cooperates with the edge of the tail of the second frustum-shaped pipe is provided at the tail of the second frustum-shaped pipe; the first frustum-shaped pipe and the second frustum-shaped pipe have the same shape and size, and the first base and the second base have the same shape and size; a square opening is symmetrically opened at the center positions of the left side wall and the right side wall of the box body 1 respectively; the size of the square opening is smaller than the size of the first base.

[0030] Furthermore, the length and width dimensions of the left side plate and the right side plate in the box body 1 are the same as the length and width dimensions of the first base.

[0031] Furthermore, asFigure 1 As shown, the second base, the left wall panel, and the left side panel are sequentially connected by bolts; the first base, the right wall panel, and the right side panel are sequentially connected by bolts.

[0032] Furthermore, as Figure 1 shown, the exhaust gas inlet 4 and the exhaust gas outlet 5 have the same shape and size, and are both connected by the cooperation of a bent pipe and a straight pipe.

[0033] Furthermore, as Figure 1 shown, the opening of the fresh air outlet 2 faces left; the opening of the fresh air inlet 3 faces up; the opening of the exhaust gas inlet 4 faces forward; the opening of the exhaust gas outlet 5 faces up.

[0034] Furthermore, a heat insulation layer is provided on the outer wall of the box body 1.

[0035] Furthermore, the box body 1 is installed on an oven, and the support feet 9 in the box body 1 are connected to the top surface of the oven by bolts; the fresh air outlet 2 is communicated with the fresh air inlet pipe of the oven; the exhaust gas inlet 4 is communicated with the exhaust gas outlet pipe of the oven.

[0036] Installation method: Install the box body on the oven, and connect the support feet in the box body to the top surface of the oven by bolts; communicate the fresh air outlet with the fresh air inlet pipe of the oven; communicate the exhaust gas inlet with the exhaust gas outlet pipe of the oven.

[0037] The working principle is as follows:

[0038] (1) The exhaust gas of the oven (i.e., the oven) is discharged from the exhaust gas outlet after passing through the exhaust gas inlet, and heats the outer wall of the heat exchange branch pipe during the continuous discharge process, so that its temperature rises;

[0039] (2) After the fresh air enters the inside of the heat exchange branch pipe through the fresh air inlet, its temperature also rises with the increase of the temperature of the heat exchange branch pipe, and finally is discharged from the fresh air outlet and enters the oven to form a temperature compensation for the oven.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. An exhaust gas heat energy purification, recovery and utilization device, characterized in that: It includes a box body, a fresh air outlet, a fresh air inlet, an exhaust gas inlet, an exhaust gas outlet, a heat recovery structure, an oil collecting box, a valve and support feet. One support foot is symmetrically arranged at each of the four top corner positions at the bottom of the box body through bolts; the heat recovery structure is placed inside the box body, and both ends of the heat recovery structure are respectively connected to the left side wall and the right side wall of the box body through bolts in a one-to-one correspondence; the fresh air outlet is installed in the middle position of the left side wall of the box body through bolts; the fresh air inlet is installed in the middle position of the left side wall of the box body through bolts; the exhaust gas outlet is arranged near the right end in the middle of the front side wall of the box body; the exhaust gas inlet is arranged near the left end in the middle of the top plate of the box body; the oil collecting box is arranged near the right end in the middle of the bottom plate of the box body; a through hole is opened near the bottom on the right side of the oil collecting box, and the oil collecting box is communicated with the valve through the through hole to facilitate the cleaning of oil stains; The heat recovery structure is composed of heat exchange branch pipes and left and right side plates correspondingly arranged on the left and right sides of the square pipe, which are welded together; several heat exchange branch pipes are evenly distributed inside the square pipe, and both ends of the heat exchange branch pipes are respectively connected to the left and right side plates in a one-to-one correspondence; several through holes that are matched with the heat exchange branch pipes one by one are respectively opened on the left and right side plates; The tail end of the exhaust gas outlet extends into the box body and is communicated with the front plate in the square pipe; the tail end of the exhaust gas inlet extends into the box body and is communicated with the top plate in the square pipe; the tail end of the oil collecting box extends into the box body and is communicated with the bottom plate in the square pipe.

2. The waste gas heat energy purification, recovery and utilization device according to claim 1, characterized in that: The fresh air inlet is composed of a frustum-shaped pipe and a bent pipe, and a first base that is matched with the edge of the tail of the first frustum-shaped pipe is arranged at the tail of the first frustum-shaped pipe; the fresh air outlet is composed of a second frustum-shaped pipe and a straight pipe, and a second base that is matched with the edge of the tail of the second frustum-shaped pipe is arranged at the tail of the second frustum-shaped pipe; the first frustum-shaped pipe and the second frustum-shaped pipe have the same shape and size, and the first base and the second base have the same shape and size; a square opening is symmetrically opened at the center positions of the left side wall and the right side wall of the box body respectively; the size of the square opening is smaller than the size of the first base.

3. The waste gas heat energy purification, recovery and utilization device according to claim 2, characterized in that: The length and width dimensions of the left and right side plates are the same as the length and width dimensions of the first base.

4. The waste gas heat energy purification, recovery and utilization device according to claim 3, characterized in that: The second base, the left wall plate and the left side plate are sequentially connected by bolts; the first base, the right wall plate and the right side plate are sequentially connected by bolts.

5. The waste gas heat energy purification, recovery and utilization device according to claim 1, characterized in that: The exhaust gas inlet and the exhaust gas outlet have the same shape and size, and are both communicated by the cooperation of a bent pipe and a straight pipe.

6. The waste gas heat energy purification, recovery and utilization device according to claim 1, characterized in that: The opening of the fresh air outlet faces left; the opening of the fresh air inlet faces up; the opening of the exhaust gas inlet faces forward; the opening of the exhaust gas outlet faces up.

7. The waste gas heat energy purification, recovery and utilization device according to claim 1, characterized in that: A heat preservation layer is provided on the outer wall of the box body.

8. The waste gas heat energy purification, recovery and utilization device according to claim 1, wherein: The box body is installed on an oven, and the support feet on the box body are connected to the top surface of the oven through bolts; the fresh air outlet is communicated with the fresh air inlet pipe of the oven; the exhaust gas inlet is communicated with the exhaust gas outlet pipe of the oven.

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