Low-energy-consumption foaming furnace

Abstract

The utility model discloses a foaming furnace with low energy consumption, which relates to the technical field of foaming equipment and comprises a furnace body, a conveying mechanism and a hot air blowing mechanism, and the furnace body is further provided with a waste gas exhaust component and a heat recovery component. The waste gas discharging assembly is provided with a smoke discharging channel and a plurality of smoke discharging pipes communicated with the smoke discharging channel, the smoke discharging pipes extend into the furnace body, and pipe openings of the smoke discharging pipes are flush with or lower than the position height of the cushion body to be foamed; the heat recovery assembly is arranged at the output end of the smoke exhaust channel and can conduct heat exchange between air needed by the hot air blowing mechanism and waste gas. The pipe orifice of the smoke exhaust pipe extends into the furnace body, and the pipe orifice of the smoke exhaust pipe is flush with the pad body or lower than the pad body, so that heat in waste gas can be better utilized, and energy consumption is reduced; and by arranging the heat recovery assembly, heat in waste gas can be used for preheating gas, and the energy consumption of the hot air blowing mechanism is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of foaming equipment, in particular to a low-energy consumption foaming furnace. Background Art

[0002] In the production process of foam pads, after slurry coating and thickness determination, foaming needs to be carried out in a foaming furnace. Existing foaming furnaces are usually heated by blowing hot air. However, since the foam pads will produce high-temperature fumes during the foaming process, these fumes must be extracted in time, otherwise it is easy to cause combustion or explosion, causing safety accidents. In the prior art, an exhaust pipe is usually set at the top of the foaming furnace for exhaust. Although the fumes can be quickly extracted, these high-temperature fumes will also take away a large amount of heat, resulting in insufficient heat for the foam pad located in the middle of the furnace body. The input of hot air needs to be increased to meet the requirements of foaming, resulting in very high energy consumption. It can be seen that the prior art still needs to be improved and enhanced. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a low-energy consumption foaming furnace, aiming to solve the defect of high energy consumption of the foaming furnace in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A low-energy foaming furnace comprises a furnace body, a conveying mechanism and a hot air blowing mechanism, wherein the furnace body is also provided with an exhaust gas exhaust component and a heat recovery component; the exhaust gas exhaust component is provided with a smoke exhaust channel and a plurality of smoke exhaust pipes connected to the smoke exhaust channel, the plurality of smoke exhaust pipes extend into the furnace body, and the pipe openings thereof are flush with or lower than the position height of a cushion body to be foamed; the heat recovery component is arranged at the output end of the smoke exhaust channel, and can exchange heat between the air required by the hot air blowing mechanism and the exhaust gas.

[0006] In the low-energy consumption foaming furnace, the smoke exhaust pipe is a retractable pipe body.

[0007] In the low-energy foaming furnace, the hot air blowing mechanism includes a first air pump, a blowing hood connected to the output end of the first air pump, an electric heating wire arranged in the blowing hood, and an air distribution plate arranged at the air outlet of the blowing hood.

[0008] In the low-energy foaming furnace, the waste gas discharge component also includes a second air pump, the input end of the second air pump is connected to the output end of the smoke exhaust channel, and the output end of the second air pump is connected to the input end of the waste gas treatment device.

[0009] In the low-energy foaming furnace, the heat recovery component includes multiple groups of heat exchange tubes, the input ends of the multiple groups of heat exchange tubes are connected to the outside, and the output ends are connected to the input ends of the first air pump.

[0010] In the low-energy consumption foaming furnace, the foaming furnace is further provided with a control mechanism and a plurality of first temperature sensors electrically connected to the control mechanism, and the plurality of first temperature sensors are distributed in the furnace body.

[0011] In the low-energy consumption foaming furnace, a second temperature sensor is provided in the smoke exhaust passage, and the second temperature sensor is electrically connected to the control mechanism.

[0012] Beneficial effects:

[0013] The utility model provides a low-energy consumption foaming furnace. By arranging an exhaust gas discharge component, the exhaust gas inside the furnace body can be discharged in time to avoid safety hazards when the content of flammable and explosive substances in the exhaust gas is too high; by extending the pipe mouth of the smoke exhaust pipe into the furnace body and arranging the pipe mouth of the smoke exhaust pipe to be flush with the cushion body or lower than the position height of the cushion body, the heat in the exhaust gas can be better utilized to reduce energy consumption; by arranging a heat recovery component, the heat in the exhaust gas can be used to preheat the gas, thereby reducing the energy consumption of the hot air blowing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the low-energy consumption foaming furnace provided by the utility model.

[0015] Markings in the attached drawings: 1-furnace body, 2-transmission mechanism, 3-hot air blowing mechanism, 5-heat recovery component, 6-first air pump, 7-blowing hood, 8-electric heating wire, 9-air uniformity plate, 10-smoke exhaust channel, 11-smoke exhaust pipe, 12-second air pump, 13-pipe mouth, 14-first temperature sensor, 15-second temperature sensor. DETAILED DESCRIPTION

[0016] The utility model provides a low energy consumption foaming furnace. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0017] See also Figure 1 The preferred embodiment of the utility model provides a low-energy foaming furnace, which is used for foaming foam pads, such as yoga mats, sports mats, crawling mats, bathroom mats, etc. It is usually arranged after the slurry coating device and before the cooling mechanism or the winding mechanism. The foaming furnace includes: a furnace body 1, a conveying mechanism 2 for conveying the pad body to be foamed, a hot air blowing mechanism 3 for heating the pad body, an exhaust gas exhaust component for exhausting the exhaust gas generated during foaming, and a heat recovery component 5 for recovering the heat of the exhaust gas, which are as follows:

[0018] The furnace body 1 is a rectangular parallelepiped with a hollow furnace cavity inside, and the furnace cavity is used to accommodate the pad to be foamed, the conveying mechanism 2 and the hot air blowing mechanism 3; strip-shaped inlets and outlets are provided at both ends of the furnace body 1 to facilitate the entry and removal of the pad and the conveying mechanism 2; the length of the furnace body 1 can be set according to the foaming needs of the foaming pad, and generally a plurality of areas with different temperatures are provided to gradually heat the foaming pad from preheating to foaming.

[0019] The conveying mechanism 2 passes through the furnace body 1 horizontally, is located in the middle of the furnace body 1 and extends along the length direction of the furnace body 1; it can be a grid-shaped conveyor belt, which is driven by a conveyor wheel and a motor, and the pad to be foamed is placed on the conveyor belt and moved by the conveyor belt; or, it is composed of two sets of circulating chains and a sprocket and a motor for driving the chain to rotate, and a hanging needle is provided on the top of the sprocket. The mesh hook of the foaming pad is hung on the hanging needle, which can not only make the mesh cloth horizontally open, but also move with the chain, thereby realizing the horizontal movement of the pad to be foamed in the furnace body 1.

[0020] The hot air blowing mechanism 3 comprises a first air pump 6 for blowing gas, a blowing hood 7 connected to the output end of the first air pump 6, and an electric heating wire 8 arranged in the blowing hood 7. There are multiple blowing hoods 7, which are evenly distributed above and below the foaming pad, and an air distribution plate 9 is provided at the air outlet thereof. Through the action of the air distribution plate 9, the hot air can be evenly blown on the surface of the pad to be foamed.

[0021] The exhaust gas discharge component includes a smoke exhaust channel 10, a plurality of smoke exhaust pipes 11 connected to the smoke exhaust channel 10, and a second air pump 12. The plurality of smoke exhaust pipes 11 are evenly distributed on both sides of the top of the furnace body 1, and the pipe bodies thereof extend into the furnace body 1; the input end of the second air pump 12 is connected to the smoke exhaust channel 10 through a pipeline, and the output end thereof is connected to the exhaust gas treatment device. Since the hot exhaust gas will go upward and accumulate at the top of the furnace body 1, in order to smoothly extract the exhaust gas, the prior art usually makes the pipe mouth 13 of the smoke exhaust pipe 11 flush with the top surface of the furnace body 1. This results in a large amount of heat being taken away at the same time when the exhaust gas is extracted, causing the internal temperature of the furnace body 1 to drop, and the hot air supply must be increased to meet the temperature requirement for foaming of the pad body. In this regard, in the present embodiment, the pipe mouth 13 of the smoke exhaust pipe 11 is set to be flush with the pad body or lower than the position height of the pad body. Therefore, when the exhaust gas is extracted, the exhaust gas needs to go downward first and move to the height of the pad body to be foamed, or lower than the position height of the pad body. Therefore, its heat can be first transferred to the pad body and then enter the smoke exhaust pipe 11, thereby improving the utilization rate of the heat in the exhaust gas and reducing the energy consumption of the hot air blowing mechanism 3.

[0022] The heat recovery component 5 is arranged at the output end of the smoke exhaust channel 10, and includes a plurality of groups of heat exchange tubes arranged in parallel. The input ends of the plurality of heat exchange tubes are connected to the outside, and the output ends thereof are connected to the input end of the first air pump 6. Through the heat exchange effect of the heat exchange tubes, the air required by the hot air blowing mechanism 3 can be exchanged with the high-temperature hot exhaust gas, thereby increasing the temperature of the air, playing a preheating role, and greatly reducing the energy consumption of the hot air blowing mechanism 3; at the same time, the heat in the exhaust gas can be utilized, and the temperature of the exhaust gas can be reduced, thereby avoiding high-temperature overheating and combustion of the exhaust gas, and improving safety.

[0023] In this embodiment, by setting up an exhaust gas discharge component, the exhaust gas inside the furnace body 1 can be discharged in time to avoid safety hazards when the content of flammable and explosive substances in the exhaust gas is too high; by extending the pipe mouth 13 of the smoke exhaust pipe 11 into the furnace body 1, and setting the pipe mouth 13 of the smoke exhaust pipe 11 flush with the cushion body or lower than the height of the cushion body, the heat in the exhaust gas can be better utilized and the energy consumption can be reduced; by setting up a heat recovery component 5, the heat in the exhaust gas can be used to preheat the gas, thereby reducing the energy consumption of the hot air blowing mechanism 3.

[0024] Since the foaming temperatures of foam pads made of different materials are different, the exhaust gases generated are also different, so the residence time of the exhaust gas in the furnace body 1 also needs to be different. In this regard, in a preferred embodiment, the smoke exhaust pipe 11 is a retractable tube body, so the position height of the pipe mouth 13 of the smoke exhaust pipe 11 can be adjusted according to the different foaming temperatures of the foaming material, so as to control the exhaust time of the exhaust gas, thereby making full use of the heat in the exhaust gas.

[0025] In order to better control the temperature inside the foaming furnace, the foaming furnace is also provided with a control mechanism and a first temperature sensor 14. There are multiple first temperature sensors 14 distributed in different areas of the furnace body 1 to monitor the temperatures of different areas of the furnace body 1; the first temperature sensor 14 is electrically connected to the control mechanism, and the control mechanism is also electrically connected to the first fan, the second fan and the electric heating wire 8. The control mechanism can receive the temperature information obtained by the first temperature sensor 14, and control the power of the first fan, the second fan and the electric heating wire 8 according to the temperature information, so that the temperature inside the furnace body 1 meets the foaming requirements of the foaming pad.

[0026] In addition, since combustion or explosion is likely to occur when the exhaust gas concentration in the exhaust channel 10 is too high, in a preferred embodiment, a second temperature sensor 15 is provided in the exhaust channel 10, and the second temperature sensor 15 is also electrically connected to the control mechanism to monitor the temperature of the exhaust gas in the exhaust channel 10. The control mechanism can set a temperature threshold of the exhaust gas in the exhaust channel 10. When the temperature of the exhaust channel 10 exceeds the upper threshold, the power of the second fan is increased, and the power of the electric heating wire 8 is reduced, or the heating of the electric heating wire 8 is stopped, so as to ensure the safe operation of the equipment.

[0027] In summary, the low-energy foaming furnace described in the utility model, by extending the pipe mouth 13 of the smoke exhaust pipe 11 into the furnace body 1, and making the pipe mouth 13 of the smoke exhaust pipe 11 flush with the cushion body or lower than the position height of the cushion body, can make the high-temperature exhaust gas flow through the cushion body to be foamed before entering the smoke exhaust pipe 11, which can better utilize the heat in the exhaust gas and reduce the energy consumption of the electric heating wire 8; by arranging a heat recovery component 5 in the smoke exhaust channel 10, the heat in the exhaust gas is used to preheat the gas, thereby reducing the energy consumption of the hot air blowing mechanism 3.

[0028] It should be noted that in the description of the embodiments of the present utility model, the terms "inside", "outside", "upper", "lower", "left", "right", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and concept of the utility model, and all these changes or substitutions should fall within the protection scope of the claims attached to the utility model.

Claims

1. A low energy consumption foaming furnace, comprising a furnace body, a conveying mechanism and a hot air blowing mechanism, characterized in that: The furnace body is also provided with an exhaust gas discharge component and a heat recovery component; the exhaust gas discharge component is provided with a smoke exhaust channel and a plurality of smoke exhaust pipes connected to the smoke exhaust channel, the plurality of smoke exhaust pipes extend into the furnace body, and the pipe openings thereof are flush with or lower than the position height of the cushion body to be foamed; the heat recovery component is arranged at the output end of the smoke exhaust channel, which can exchange heat between the air required by the hot air blowing mechanism and the exhaust gas.

2. The low energy consumption foaming furnace according to claim 1, characterized in that: The smoke exhaust pipe is a retractable pipe body.

3. The low energy consumption foaming furnace according to claim 1, characterized in that: The hot air blowing mechanism comprises a first air pump, a blowing hood connected to the output end of the first air pump, an electric heating wire arranged in the blowing hood, and an air distribution plate arranged at the air outlet of the blowing hood.

4. The low energy consumption foaming furnace according to claim 1, characterized in that: The exhaust gas discharge component also includes a second air pump, the input end of the second air pump is connected to the output end of the smoke exhaust channel, and the output end of the second air pump is connected to the input end of the exhaust gas treatment device.

5. The low energy consumption foaming furnace according to claim 3, characterized in that: The heat recovery component includes a plurality of groups of heat exchange tubes, the input ends of the plurality of groups of heat exchange tubes are connected to the outside, and the output ends thereof are connected to the input ends of the first air pump.

6. The low energy consumption foaming furnace according to claim 1, characterized in that: The foaming furnace is further provided with a control mechanism and a plurality of first temperature sensors electrically connected to the control mechanism, wherein the plurality of first temperature sensors are distributed in the furnace body.

7. The low energy consumption foaming furnace according to claim 6, characterized in that: A second temperature sensor is provided in the smoke exhaust passage, and the second temperature sensor is electrically connected to the control mechanism.

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