Thermal insulation plug for discharge hole of infrared drying furnace

Abstract

The utility model discloses an infrared drying furnace discharge port thermal insulation plug which comprises a main body, a cover plate and fireproof thermal insulation materials, the main body is a cuboid corresponding to a furnace mouth of an infrared drying furnace, the part, close to the interior of the furnace body, of the main body serves as the front end, the fireproof thermal insulation materials are filled in the main body, and the cover plate is arranged at the rear end of the main body. The edge of the cover plate extends out of the rear surface of the main body to form a protruding edge, and a handle is arranged on the cover plate, so that cold air of the infrared drying furnace cannot enter, the temperature in the furnace is kept, and energy is saved. Meanwhile, the outer surface of the heat preservation plug for the discharge port of the drying furnace is made of 304 stainless steel plates, the heat preservation cotton is filled in the heat preservation plug, the thickness reaches 140 mm, the heat preservation effect is good, heat in the furnace cannot be dissipated from the discharge port, and the heat preservation and energy saving effects are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of infrared drying furnace technology, specifically relating to a heat-insulating plug for the discharge port of an infrared drying furnace. Background Technology

[0002] The infrared drying oven uses an infrared quartz heater to convert electrical energy into heat energy. During the heating test run, the temperature inside the furnace continuously rises until it reaches the required temperature of 550℃ to achieve normal operation. During the heating process, the hot air inside the furnace continuously rises through the exhaust duct at the top of the furnace and the feed inlet, but cold air continuously enters from the bottom of the furnace through the discharge outlet, which lowers the temperature inside the furnace. Therefore, a stainless steel plate is used to shield the discharge outlet.

[0003] The defects of the discharge port of existing drying equipment:

[0004] 1. During operation, many manufacturers cover the discharge port of infrared drying ovens with a stainless steel plate. As the oven temperature rises, the stainless steel plate deforms due to heat, creating gaps between the plate and the discharge port. As the oven temperature increases, hot air rises through the inlet and exhaust duct, while cold air enters the oven through the gap to maintain pressure balance. The entry of cold air causes a drop in oven temperature. Therefore, covering the discharge port with a stainless steel plate requires more energy to achieve the same target temperature. Furthermore, as the oven temperature rises, the thin stainless steel plate is insufficient for insulation. Since stainless steel is a metal with high heat transfer rates, heat dissipates continuously through the discharge port, resulting in energy waste and environmental pollution.

[0005] 2. The discharge port is shielded by a stainless steel plate. The temperature outside the furnace is high, which can easily cause burns and endanger the personal safety of operators. Utility Model Content

[0006] To overcome the aforementioned shortcomings, the inventors of this utility model have proposed a heat-insulating plug for the discharge port of an infrared drying furnace. This plug prevents cold air from entering the furnace, maintaining the furnace temperature and saving energy. Furthermore, the outer surface of the heat-insulating plug is made of 304 stainless steel, and the interior is filled with 140mm thick insulating cotton, providing excellent insulation and preventing heat from escaping from the discharge port, thus achieving both heat preservation and energy saving.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a heat-insulating plug for the discharge port of an infrared drying furnace. It includes a main body, a cover plate, and fireproof and heat-insulating material. The main body is a cuboid corresponding to the furnace opening of the infrared drying furnace, with the front end of the main body closest to the furnace interior. The main body is filled with fireproof and heat-insulating material. A cover plate is provided at the rear end of the main body, with its edge extending beyond the rear surface of the main body to form a protruding edge. A handle is provided on the cover plate.

[0008] A further preferred technical solution of the heat insulation plug for the discharge port of an infrared drying furnace according to the present invention is: the main body is formed by bending and welding a 1.5mm thick 304 stainless steel plate, with smooth welds and no gaps or protrusions.

[0009] A further preferred technical solution of the heat insulation plug for the discharge port of an infrared drying furnace according to the present invention is that the fireproof and heat-insulating material is heat-insulating cotton with a thickness of 140mm or more.

[0010] A further preferred embodiment of the present invention is that the cover plate is provided with vent holes, which are located away from the handle.

[0011] A further preferred embodiment of the present invention is that the diameter of the vent hole is greater than 4 mm.

[0012] A further preferred embodiment of the present invention is that the number of handles is two, which are correspondingly installed on the left and right sides of the cover plate.

[0013] A further preferred embodiment of the present invention is that the handle is a foldable handle, with the folding direction facing both sides of the cover plate.

[0014] A further preferred technical solution of the heat insulation plug for the discharge port of an infrared drying furnace according to the present invention is: the cover plate is a 2mm thick 304 stainless steel plate, and the rear edge is rounded.

[0015] A further preferred technical solution of the infrared drying furnace outlet insulation plug according to the present invention is as follows: the main body includes a front guide part and a rear sealing part; the two narrow side surfaces of the front part of the main body are set as inclined surfaces, and the intersection of the inclined surfaces and the long side surfaces is chamfered to form the front guide part, or the guide part is set as a chamfered truncated pyramid structure; the sealing part is tightly fitted to the furnace opening wall.

[0016] A further preferred embodiment of the present invention is that the guide portion occupies half the height of the main body.

[0017] Compared with the prior art, the technical solution of this utility model has the following advantages / benefits:

[0018] 1. The insulating plug of this utility model prevents cold air from entering the infrared drying oven, maintaining the oven temperature and saving energy. Simultaneously, the outer surface of the insulating plug at the oven outlet is made of 304 stainless steel plate, and the interior is filled with 140mm thick insulating cotton, providing excellent insulation. Heat inside the oven will not dissipate from the outlet, achieving the effect of heat preservation and energy saving. Under different temperature conditions inside the drying oven, no cold air will leak into the oven through the outlet. Even when the oven temperature reaches 800℃, the insulating plug will not deform, the weld joints will not crack, and no heat will dissipate outwards.

[0019] 2. It reduces the temperature after the furnace opening is sealed, which is more operator-friendly, reduces the risk of high-temperature burns, and prevents prolonged heat loss, thus improving the working environment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an insulating plug for the discharge port of an infrared drying furnace according to this utility model.

[0022] Figure 2 This is a front view of an insulating plug for the discharge port of an infrared drying furnace according to this utility model.

[0023] Figure 3 yes Figure 2 Sectional view at point AA.

[0024] Figure 4 This is a left view of an insulating plug for the discharge port of an infrared drying furnace according to this utility model.

[0025] Figure 5 This is a top view of a heat-insulating plug for the discharge port of an infrared drying oven according to this utility model.

[0026] The markings in the diagram are as follows: 1. Main body 101. Guide part 102. Sealing part 2. Cover plate 201. Protruding edge 3. Fireproof and heat-insulating material 4. Ventilation hole 5. Handle. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the detailed description of the embodiments of this utility model provided below is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

[0029] Example 1:

[0030] like Figures 1-5 As shown, an insulating plug for the discharge port of an infrared drying furnace is disclosed. It includes a main body 1, a cover plate 2, and fireproof and heat-insulating material 3. The main body 1 is a cuboid corresponding to the furnace opening of the infrared drying furnace, used to seal the rectangular furnace opening. The insulating plug is custom-designed according to the shape and size of the furnace opening, ensuring a tight fit without gaps and preventing cold air from leaking into the furnace. This maintains the furnace temperature and saves energy. The main body 1 with the closest point to the furnace interior forms the front end, and the interior of the main body 1 is filled with fireproof and heat-insulating material 3. The cover plate 2 is located at the rear end of the main body 1, with its edge extending beyond the rear surface of the main body 1 to form a protruding edge 201. This edge cooperates with the edge of the furnace opening to limit movement and increase sealing. A handle 5 is provided on the cover plate 2 for removing and inserting the insulating plug.

[0031] The main body 1 is formed by bending and welding a 1.5mm thick 304 stainless steel plate. The weld is smooth and seamless, which makes it easy to insert and does not deform when heated. Under different temperature conditions in the furnace chamber of the drying oven, cold air will not leak into the furnace through the discharge port. When the furnace temperature reaches 800℃, the heat insulation plug will not deform, the weld will not crack, and no heat will be dissipated outward.

[0032] The fireproof and heat-insulating material 3 is heat-insulating cotton with a thickness of 140mm or more, which achieves a good heat-insulating effect. The cover plate 2 is provided with vent holes 4, which are located away from the handle 5. The vent holes 4 prevent the heat-insulating plug from expanding internally after being heated and cracking the weld.

[0033] The diameter of the ventilation hole 4 is greater than 4mm, which ensures that the insulation cotton is not exposed while maintaining good air permeability, and the insulation cotton also has a certain expansion space.

[0034] There are two handles 5, which are installed on the left and right sides of the cover plate 2 respectively, so as to facilitate operation with both hands. The handles 5 are foldable handles, and the folding direction is towards the sides of the cover plate 2. After the operation is completed, the handles 5 can be laid down to prevent interference with other operations.

[0035] The cover plate 2 is made of 2mm thick 304 stainless steel plate, and the rear edge is rounded to prevent sharp parts from injuring the operator during operation. The increased thickness prevents the handle 5 from tearing. The cover plate 2 is also installed by welding, and the weld is required to be strong.

[0036] The main body 1 includes a front guide part 101 and a rear sealing part 102. The two narrow sides of the front of the main body 1 are set as bevels, and the intersection of the bevels and the long side is chamfered to form the front guide part 101. That is, the guide part 101 is installed by using the bevels on both sides. Similarly, the long side can also be set to be inclined to achieve the same purpose. The sealing part 102 is in close contact with the furnace opening wall. That is, the sealing part 102 corresponds to the shape of the furnace opening and is the main sealing part.

[0037] The guide section 101 occupies half the height of the main body 1. Of course, this is just a reasonable ratio, and it can be adjusted according to needs when necessary.

[0038] Example 2:

[0039] A heat-insulating plug for the discharge port of an infrared drying furnace includes a main body 1, a cover plate 2, and fireproof and heat-insulating material 3. The main body 1 is a cuboid corresponding to the furnace opening of the infrared drying furnace. This cuboid is used to seal the rectangular furnace opening. The heat-insulating plug for the discharge port is custom-designed according to the shape and size of the furnace opening, fitting tightly without gaps to ensure that no cold air leaks into the furnace. This maintains the temperature inside the furnace and saves energy. The front end of the main body 1 is located near the inside of the furnace. The interior of the main body 1 is filled with fireproof and heat-insulating material 3. The cover plate 2 is set at the rear end of the main body 1. The edge of the cover plate 2 extends beyond the rear surface of the main body 1 to form a protruding edge 201. This edge cooperates with the edge of the furnace opening to limit the movement and increase the sealing performance. A handle 5 is provided on the cover plate 2 for removing and inserting the heat-insulating plug.

[0040] The main body 1 is formed by bending and welding a 1.5mm thick 304 stainless steel plate. The weld is smooth and seamless, which makes it easy to insert and does not deform when heated. Under different temperature conditions in the furnace chamber of the drying oven, cold air will not leak into the furnace through the discharge port. When the furnace temperature reaches 800℃, the heat insulation plug will not deform, the weld will not crack, and no heat will be dissipated outward.

[0041] The fireproof and heat-insulating material 3 is heat-insulating cotton with a thickness of 140mm or more, which achieves a good heat-insulating effect. The cover plate 2 is provided with vent holes 4, which are located away from the handle 5. The vent holes 4 prevent the heat-insulating plug from expanding internally after being heated and cracking the weld.

[0042] The diameter of the ventilation hole 4 is greater than 4mm, which ensures that the insulation cotton is not exposed while maintaining good air permeability, and the insulation cotton also has a certain expansion space.

[0043] There are two handles 5, which are installed on the left and right sides of the cover plate 2 respectively, so as to facilitate operation with both hands. The handles 5 are foldable handles, and the folding direction is towards the sides of the cover plate 2. After the operation is completed, the handles 5 can be laid down to prevent interference with other operations.

[0044] The cover plate 2 is made of 2mm thick 304 stainless steel plate, and the rear edge is rounded to prevent sharp parts from injuring the operator during operation. The increased thickness prevents the handle 5 from tearing. The cover plate 2 is also installed by welding, and the weld is required to be strong.

[0045] The main body 1 includes a front guide part 101 and a rear sealing part 102. The front guide part 101 of the main body 1 is set as a chamfered frustum structure, that is, all four sides of the main body 1 are set as inclined surfaces, forming a frustum structure with a small front end and a large rear end. The edges of the frustum are chamfered, which can reduce wear on protruding parts and make the guiding function smoother. Its structure is relatively simple and will not be described in detail here. The sealing part 102 is tightly fitted to the furnace opening wall, that is, the sealing part 102 corresponds to the shape of the furnace opening and is the main sealing part.

[0046] The guide section 101 occupies half the height of the main body 1. Of course, this is just a reasonable ratio, and it can be adjusted according to needs when necessary.

[0047] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An infrared drying furnace discharge port heat retaining plug, characterized in that, It includes a main body, a cover plate, a fireproof insulation material, the main body is a cuboid corresponding to the furnace mouth of the infrared drying furnace, the main body is close to the inside of the furnace body as the front end, the main body is filled with fireproof insulation material inside, the cover plate is arranged at the rear end of the main body, the edge of the cover plate extends out of the rear surface of the main body to form a protruding edge, and a handle is arranged on the cover plate.

2. The heat retaining plug for the discharge port of an infrared drying furnace according to claim 1, characterized in that, The main body is formed by bending and welding a 1.5mm thick 304 stainless steel plate, and the weld is smooth without gaps and protrusions.

3. The heat retaining plug for the discharge port of an infrared drying furnace according to claim 1, characterized in that, The fireproof insulation material is thermal insulation cotton, and the thickness of the thermal insulation cotton is more than 140mm.

4. The heat retaining plug for the discharge port of an infrared drying furnace according to claim 1, characterized in that, The cover plate is provided with a breathable hole, and the breathable hole is arranged away from the handle.

5. The infrared drying oven discharge port insulation plug according to claim 4, characterized in that, The diameter of the breathable hole is greater than 4mm.

6. The infrared drying oven discharge port insulation plug of claim 1, wherein, The number of handles is two, and the handles are correspondingly installed on the left and right sides of the cover plate.

7. The heat retaining plug for the discharge port of an infrared drying furnace according to claim 6, characterized in that, The handle is a foldable handle, and the folding direction is towards the two sides of the cover plate.

8. The heat retaining plug for the discharge port of an infrared drying furnace according to claim 1, characterized in that, The cover plate is a 2mm thick 304 stainless steel plate, and the edge of the rear end is a round corner.

9. The infrared drying oven discharge port heat retaining plug according to claim 1, characterized in that, The main body includes a guide part at the front and a sealing part at the rear, the two narrow side surfaces of the front part of the main body are arranged as inclined surfaces, and the intersection of the inclined surfaces and the long side surfaces is chamfered to form the guide part at the front, or the guide part is arranged as a chamfered prism structure; the sealing part is closely combined with the wall surface of the furnace mouth.

10. The infrared drying oven discharge port insulation plug according to claim 9, characterized in that, The guide part occupies one half of the height of the main body.

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