Uniformly heated gas-fired hot-air furnace

Abstract

The utility model discloses a kind of even heating type gas hot blast furnace, it is related to hot blast furnace technical field, including hot blast furnace body, the side of the hot blast furnace body is connected with heat preservation cover sealing mechanism, the inside of the hot blast furnace body is provided with the drying material rack for placing drying material, the utility model solves the uneven heating of the upper and lower ends of the existing gas hot blast furnace body, in addition, the problem that drying furnace needs to be opened automatically, the utility model is set through hot blast furnace body, furnace mouth is placed gas heating assembly, and mutually adheres with bottom plate, realizes heat transfer, iron plate is side by side arranged at both ends, so that hot blast furnace inner wall temperature rises, and mutually corresponds with the net frame of side by side, left and right communication port and side opening are interconnected, balance the temperature of left and right two ends of furnace mouth, circulating pipe collects hot gas and is transmitted into from gas heating assembly lateral furnace mouth middle, so that every column drying material can be heated evenly, the setting of heat preservation cover sealing mechanism realizes the automatic switching of heat preservation door.

Description

Technical Field

[0001] This utility model relates to the field of hot blast stove technology, specifically a uniformly heated gas-fired hot blast stove. Background Technology

[0002] A gas-fired hot air furnace is a thermal energy device that uses combustible gases such as natural gas and liquefied petroleum gas as fuel to heat air and output hot air. Indirect gas-fired hot air furnaces typically include a shell-and-tube heat exchanger. The gas is burned in the combustion chamber, and the heat is transferred to the air through the heat exchanger to achieve heat exchange. The heat exchanger consists of multiple heat exchange tubes. Air flows outside the tubes, while flue gas flows inside the tubes, thus avoiding direct contact between flue gas and hot air and providing cleaner hot air.

[0003] The gas-fired hot air furnace with authorization announcement number CN214120398U includes a furnace body, an air duct connected to the air outlet of the furnace body, a filter box connected between the furnace body and the air duct, an activated carbon filter layer removably installed inside the filter box, a notch through one side of the filter box, an installation frame that is slidably installed inside the filter box and fits into the notch, the activated carbon filter layer is installed in the installation frame, and a sealing plate is installed inside the filter box to seal the notch. Although the heating is uniform, the temperature inside the furnace body may rise with the hot air, causing temperature loss, resulting in uneven heating of the drying materials arranged side by side. In addition, the drying furnace needs to open automatically to reduce personnel contact and ensure safety.

[0004] To address the aforementioned issues, a uniformly heated gas-fired hot air furnace is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a uniformly heated gas-fired hot air furnace, which solves the problems in the prior art where the temperature inside the furnace body of the existing gas-fired hot air furnace may be lost as the hot air rises, resulting in uneven heating of the upper and lower ends of the drying materials arranged side by side. In addition, the drying furnace needs to be opened automatically to reduce personnel contact and ensure safety.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a uniformly heated gas-fired hot air furnace, comprising a hot air furnace body, a heat-insulating cover sealing mechanism connected to one side of the hot air furnace body, a drying material placement rack for placing drying materials inside the hot air furnace body, the hot air furnace body including a furnace box, a furnace opening opened inside the furnace box, left and right connecting openings and side openings connected to the upper two sides of the furnace opening, iron plates arranged side by side on both sides of the furnace opening, circulation pipes externally connected to the upper and lower ends of the furnace opening, a gas-fired heating component arranged at the lower end of the furnace opening, a base plate resting on the upper end of the gas-fired heating component, and wire mesh frames arranged side by side at both ends of the base plate, the heat-insulating cover sealing mechanism including a heat-insulating door inserted to block one end of the furnace opening.

[0007] Preferably, the circulation pipe is located at the center of the upper end of the furnace opening, and two diversion pipes extend from the lower end of the circulation pipe. A fan is connected to one side of the circulation pipe.

[0008] Preferably, the upper end of the furnace opening is set in an arc shape, and the left and right connecting openings are opened on both sides of the arc shape.

[0009] Preferably, the gas heating assembly includes a furnace body insulation plate fixed to the bottom of the furnace box, a furnace liner horizontally arranged inside the furnace body insulation plate, the furnace liner being aligned with the air outlet of the circulation pipe, heat exchanger heat dissipation pipes for heat exchange being connected to both sides of the furnace liner, a burner being connected to one end of the furnace liner and the heat exchanger heat dissipation pipes, a waste gas exhaust pipe being connected to one end of the burner, and a dehumidification pipe being correspondingly arranged at the top of the furnace box.

[0010] Preferably, the heat preservation cover sealing mechanism further includes a drive cylinder fixedly installed at the upper end of the furnace box, and the output end of the drive cylinder is provided with a connecting block, which is connected to both sides of the heat preservation door.

[0011] Preferably, a guide rod is connected to one side of the connecting block.

[0012] Preferably, the base plate has a built-in vent at its center.

[0013] Preferably, the drying material placement rack further includes side support frames connected to both ends of the wire mesh frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 3. The present invention provides a uniformly heated gas-fired hot air furnace. Through the arrangement of the hot air furnace body, a gas heating component is placed below the furnace opening and is in close contact with the bottom plate to achieve heat transfer. Iron plates are arranged side by side at both ends, which makes the temperature of the inner wall of the hot air furnace rise. This corresponds to the parallel mesh frame. The left and right connecting ports and the side openings are interconnected to balance the temperature at the left and right ends of the furnace opening. The circulation pipe collects hot air and introduces it from the side of the gas heating component to the middle of the furnace opening, so that the hot air in the internal space of the furnace opening is balanced and uniform heating is achieved. This initially solves the problem that the temperature inside the furnace body of the existing gas-fired hot air furnace may rise with the hot air, causing temperature loss and uneven heating of the upper and lower ends of the parallel drying materials.

[0015] 4. The gas-fired hot air furnace with uniform heating provided by this utility model can ensure that each row of drying materials is heated evenly by setting up a drying material placement rack and iron plate. This solves the problem that the temperature inside the furnace body of the existing gas-fired hot air furnace may be lost as the hot air rises, resulting in uneven heating of the upper and lower ends of the drying materials arranged side by side.

[0016] 5. The gas-fired hot air furnace with uniform heating provided by this utility model realizes the automatic opening and closing of the insulation door through the setting of the insulation cover sealing mechanism, which solves the problem that existing gas-fired hot air furnaces need to open automatically, reduce personnel contact, and ensure safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the overall dissection structure of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the overall dissection structure of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the cross-sectional structure of the gas heating component of this utility model; Figure 6 This is a schematic diagram of the structure of the drying material placement rack of this utility model.

[0018] In the diagram: 1. Hot air furnace body; 11. Furnace box; 111. Furnace opening; 112. Left and right connecting ports; 113. Side opening; 12. Iron plate; 13. Gas heating assembly; 131. Burner; 132. Furnace body insulation board; 133. Furnace liner; 134. Heat exchanger radiator pipe; 135. Exhaust gas exhaust pipe; 14. Circulation pipe; 141. Diversion pipe; 15. Dehumidification pipe; 2. Insulation cover sealing mechanism; 21. Drive cylinder; 22. Connecting block; 23. Guide rod; 24. Insulation door; 3. Drying material placement rack; 31. Base plate; 311. Internal vent; 32. Side support frame; 33. Grid frame. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0020] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0021] Combination Figure 1This utility model discloses a uniformly heated gas-fired hot air furnace, comprising a hot air furnace body 1, a heat insulation cover sealing mechanism 2 connected to one side of the hot air furnace body 1, a drying material placement rack 3 for placing drying materials inside the hot air furnace body 1, a furnace box 11, a furnace opening 111 inside the furnace box 11, left and right connecting ports 112 and side openings 113 connected to the upper two sides of the furnace opening 111, iron plates 12 arranged side by side on both sides of the furnace opening 111, a circulation pipe 14 externally connected to the upper and lower ends of the furnace opening 111, a gas heating component 13 arranged at the lower end of the furnace opening 111, a base plate 31 resting on the upper end of the gas heating component 13, and a mesh frame 33 arranged side by side at both ends of the base plate 31. The heat insulation cover sealing mechanism 2 includes a heat insulation door 24 inserted to block one end of the furnace opening 111, the heat insulation door 24 being relatively thick and capable of sealing the furnace opening 111 to achieve heat preservation.

[0022] Specifically, a gas heating component 13 is placed under the furnace opening 111 and is in close contact with the bottom plate 31 to achieve heat transfer during drying. Iron plates 12 are arranged side by side at both ends, corresponding to the parallel mesh frame 33. The left and right connecting ports 112 and the side openings 113 are interconnected to balance the temperature at the left and right ends of the furnace opening 111. The circulation pipe 14 collects hot air and introduces it from the side of the gas heating component 13 to the middle of the furnace opening 111, so that the hot air in the internal space of the furnace opening 111 is balanced and uniform heating is achieved. At the same time, the iron plate 12 absorbs heat and becomes hot, which can increase the temperature of the inner wall of the furnace box 11. The combination of the mesh frame 33, the circulation pipe 14 and the iron plate 12 ensures that each row of drying material can be heated evenly. The heat insulation cover sealing mechanism 2 can realize the automatic opening of the hot air furnace body 1. At the same time, the heat insulation door 24 of the heat insulation cover sealing mechanism 2 is thick to ensure the heat insulation effect inside the furnace box 11.

[0023] The present invention will be further described below with reference to the embodiments.

[0024] Example 1: Combination Figures 2-5 The circulation pipe 14 is located at the center of the upper end of the furnace opening 111. Two diversion pipes 141 extend from the lower end of the circulation pipe 14. A fan is connected to one side of the circulation pipe 14. The circulation pipe 14 fully collects hot air and drives the diversion pipes 141 to circulate hot air to the gas heating component 13 through the external fan. The circulated air is reheated by the gas heating component 13 and then sent to the furnace box 11 to realize the heating of the center and bottom of the drying material placement rack 3.

[0025] The upper end of the furnace opening 111 is set in an arc shape, and the left and right connecting ports 112 are opened on both sides of the arc shape. The connection between the furnace opening 111 and the left and right connecting ports 112 is relatively stable, which facilitates the connection of hot air from the left and right ends of the furnace opening 111.

[0026] The gas heating assembly 13 includes a furnace body insulation plate 132 fixed to the bottom of the furnace box 11. A furnace liner 133 is horizontally arranged inside the furnace body insulation plate 132. The furnace liner 133 is aligned with the air outlet of the circulation pipe 14. Heat exchanger radiator pipes 134 for heat exchange are connected to both sides of the furnace liner 133. One end of the furnace liner 133 and the heat exchanger radiator pipes 134 is connected to a burner 131. One end of the burner 131 is connected to a waste gas exhaust pipe 135. A dehumidification pipe 15 is correspondingly arranged at the upper end of the furnace box 11. The gas is burned in the burner 131, and the heat is transferred to the air through the heat exchanger radiator pipes 134 and the burner 131, realizing heat exchange. In the next step, the furnace shell 133 is aligned with the air outlet of the circulation pipe 14 to reheat the circulating air. The air flows outside the heat exchanger heat dissipation pipe 134 and the furnace shell 133. The furnace body insulation plate 132 is set on the outside for heat preservation. At the same time, the outside of the circulation pipe 14 also needs to be wrapped with insulation material. The flue gas flows inside the heat exchanger heat dissipation pipe 134 and the furnace shell 133 and is discharged through the exhaust gas exhaust pipe 135, thereby avoiding direct contact between the flue gas and the hot air, and providing cleaner hot air to the furnace box 11. The moisture of the drying material in the furnace box 11 is discharged to the outside through the exhaust pipe 15 set at the upper end. The exhaust pipe 15 has a small diameter, which can ensure that most of the hot air circulates in the furnace box 11.

[0027] The heat preservation cover sealing mechanism 2 also includes a drive cylinder 21 fixedly installed on the upper end of the furnace box 11. The output end of the drive cylinder 21 is provided with a connecting block 22. The connecting block 22 is connected to both sides of the heat preservation door 24. The drive cylinder 21 drives the connecting block 22 to move and seal the furnace opening 111.

[0028] A guide rod 23 is connected to one side of the connecting block 22, and the guide rod 23 guides the heat preservation door 24.

[0029] Example 2: Combination Figure 6 The base plate 31 has a built-in vent 311 in the center, which is connected to the port of the diversion pipe 141 connected to the center of the gas heating component 13, so as to facilitate the delivery of hot air to the center of the base plate 31.

[0030] The drying material placement rack 3 also includes side support frames 32 that connect the two ends of the wire mesh frame 33. The side support frames 32 provide fixed support for multiple sets of parallel wire mesh frames 33. The wire mesh frame 33 and the side support frames 32 are respectively arranged on both sides of the base plate 31.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A uniformly heated gas-fired hot air furnace, comprising a hot air furnace body (1), characterized in that: A heat preservation cover sealing mechanism (2) is connected to one side of the hot air furnace body (1), and a drying material placement rack (3) for placing drying materials is provided inside the hot air furnace body (1). The hot air furnace body (1) includes a furnace box (11), and a furnace opening (111) is provided inside the furnace box (11). The upper end of the furnace opening (111) is provided with left and right connecting ports (112) and side openings (113). Iron plates (12) are arranged side by side on both sides of the furnace opening (111). A circulation pipe (14) is externally connected to the upper and lower ends of the furnace opening (111). A gas heating component (13) is provided at the lower end of the furnace opening (111). A base plate (31) is placed on the upper end of the gas heating component (13). A wire mesh frame (33) is arranged side by side at both ends of the base plate (31). The heat preservation cover sealing mechanism (2) includes a heat preservation door (24) inserted into and blocking one end of the furnace opening (111).

2. The uniformly heated gas-fired hot blast stove according to claim 1, characterized in that: The circulation pipe (14) is located at the center of the upper end of the furnace opening (111). Two diversion pipes (141) extend from the lower end of the circulation pipe (14). A fan is connected to one side of the circulation pipe (14).

3. The uniformly heated gas-fired hot air furnace according to claim 1, characterized in that: The upper end of the furnace opening (111) is set in an arc shape, and the left and right connecting ports (112) are opened on both sides of the arc shape.

4. The uniformly heated gas-fired hot blast stove according to claim 1, characterized in that: The gas heating assembly (13) includes a furnace body insulation plate (132) fixed at the bottom of the furnace box (11). A furnace liner (133) is horizontally arranged inside the furnace body insulation plate (132). The furnace liner (133) is aligned with the air outlet of the circulation pipe (14). Heat exchanger heat dissipation pipes (134) for heat exchange are connected to both sides of the furnace liner (133). A burner (131) is connected to one end of the furnace liner (133) and the heat exchanger heat dissipation pipes (134). A waste gas exhaust pipe (135) is connected to one end of the burner (131). A dehumidification pipe (15) is correspondingly arranged at the top of the furnace box (11).

5. A uniformly heated gas-fired hot air furnace according to claim 1, characterized in that: The heat preservation cover sealing mechanism (2) also includes a drive cylinder (21) fixedly installed on the upper end of the furnace box (11). The output end of the drive cylinder (21) is provided with a connecting block (22), which is connected to both sides of the heat preservation door (24).

6. A uniformly heated gas-fired hot blast stove according to claim 5, characterized in that: A guide rod (23) is connected to one side of the connecting block (22).

7. A uniformly heated gas-fired hot air furnace according to claim 1, characterized in that: The base plate (31) has a built-in vent (311) at its center.

8. A uniformly heated gas-fired hot air furnace according to claim 1, characterized in that: The drying material placement rack (3) also includes side support frames (32) set at both ends of the connecting wire mesh frame (33).

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