Energy-saving pre-baking circulation oven

Abstract

The utility model provides an energy -saving pre -baking circulating oven relates to oven technical field, including box, two groups of baffle, cloth feeding roller, cloth exit roller, guide component, air blower, two groups of baffle are stacked in the top of box, form upper passage and lower passage between two groups of baffle respectively, the lower part of two groups of baffle in the box is the air inlet chamber, the air blower is used for introducing hot air into air inlet chamber, cloth feeding roller, cloth exit roller set up respectively in the input of upper passage and the output of lower passage outside the box, the guide component is used for introducing the cloth of upper passage to come out lower passage, and the compact hole is set up on two groups of baffle. This energy -saving pre -baking circulating oven, can reduce the air velocity of hot air through the setting baffle, increase the retention time of hot air in the box, improve the heat exchange efficiency, can also heat the baffle, through the high temperature baffle to the cloth heating can further increase the drying effect of cloth.

Description

Technical Field

[0001] This utility model relates to the field of setting machine oven technology, specifically an energy-saving pre-drying circulating oven. Background Technology

[0002] During the fabric printing and dyeing process, the fabric needs to be dried in an oven. Existing ovens generally have a set of exhaust vents in the air box inside. Driven by an external fan, the high-temperature gas passing through the air box circulates and dries the fabric.

[0003] Current drying ovens have two main shortcomings: First, the high air intake power means the air doesn't fully exchange heat with the fabric before being expelled, resulting in significant heat loss. Second, the use of steam for air intake is expensive, leading to higher costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an energy-saving pre-drying circulating oven, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: an energy-saving pre-drying circulating oven, comprising a box body, two sets of partitions, a fabric inlet roller, a fabric outlet roller, a guide assembly, and a blower. The two sets of partitions are stacked on top of the box body, forming an upper channel and a lower channel between the two sets of partitions respectively. The air inlet chamber is located below the two sets of partitions inside the box body. The blower is used to introduce hot air into the air inlet chamber. The fabric inlet roller and the fabric outlet roller are respectively located at the input end of the upper channel and the output end of the lower channel outside the box body. The guide assembly is used to guide the fabric coming out of the upper channel into the lower channel. Dense holes are opened on the two sets of partitions.

[0008] Preferably, the guiding assembly includes guide roller one and guide roller two, which are respectively disposed outside the housing at the output end of the upper channel and the input end of the lower channel.

[0009] Preferably, it also includes a flue gas waste heat recovery device, which includes a frame, a housing, and a waste gas inlet assembly. The housing has a flue gas passage along its length, and the front and rear ends of the flue gas passage are an inlet and an outlet. The waste gas inlet assembly is used to introduce waste gas into the inlet of the flue gas passage. A heat exchange tube is arranged inside the housing, and the outlet end of the heat exchange tube is connected to an air intake fan.

[0010] Preferably, the heat exchange tubes consist of a coarse heat exchange tube group and a fine heat exchange tube group, which are connected end to end. The coarse heat exchange tube group is located at the front of the shell, and the fine heat exchange tube group is located at the rear of the shell. The end of the fine heat exchange tube group is connected to the air inlet fan.

[0011] Preferably, the flow direction of the coarse heat exchange tube group and the fine heat exchange tube group is arranged in a serpentine reciprocating pattern within the shell.

[0012] (III) Beneficial Effects

[0013] This invention provides an energy-saving pre-drying circulating oven. It has the following beneficial effects:

[0014] 1. This energy-saving pre-drying circulating oven can reduce the wind speed of hot air and increase the residence time of hot air in the oven by setting up partitions, thereby improving heat exchange efficiency. At the same time, it can also heat the partitions, and heating the fabric through the high-temperature partitions can further enhance the drying effect of the fabric.

[0015] 2. This energy-saving pre-drying circulating oven divides the heat exchange tubes into two groups of different thicknesses: a coarse heat exchange tube group and a fine heat exchange tube group. When low-temperature air enters the coarse heat exchange tube, the air can quickly absorb heat because the exhaust gas temperature is also relatively high. When the exhaust gas enters the fine heat exchange tube in the second half, the exhaust gas temperature decreases, and the fine heat exchange tube has more heat exchange tubes in the same cross-section, thereby increasing the contact area of ​​the exhaust gas. By increasing the contact area, the heat exchange efficiency of the relatively low-temperature exhaust gas is improved, thus improving the thermal energy conversion rate of the exhaust gas. Attached Figure Description

[0016] Figure 1 This is a sectional view of the side of the housing of this utility model;

[0017] Figure 2 This is a front sectional view of the housing of this utility model;

[0018] Figure 3 This is a schematic diagram of the flue gas waste heat recovery device of this utility model;

[0019] Figure 4 This is a side sectional view of the casing of this utility model.

[0020] In the diagram: 1. Box body, 2. Air inlet cavity, 3. Air inlet fan, 4. Baffle plate, 5. Upper channel, 6. Lower channel, 7. Inlet fabric roller, 8. Outlet fabric roller, 9. Guide roller one, 10. Guide roller two, 11. Fabric, 12. Frame, 13. Shell, 14. Flue gas channel, 15. Air inlet, 16. Air outlet, 17. Blower, 18. Coarse heat exchange tube assembly, 19. Fine heat exchange tube assembly. Detailed Implementation

[0021] This utility model embodiment provides an energy-saving pre-drying circulating oven, such as... Figure 1-4As shown, it includes a housing 1, two sets of partitions 4, a feed roller 7, an output roller 8, a guide assembly, and a blower 17.

[0022] Two sets of partitions 4 are stacked on top of each other inside the chamber 1, and each set of partitions 4 has dense perforations. An upper channel 5 and a lower channel 6 are formed between the two sets of partitions 4. By setting up the partitions 4, the air velocity of the hot air can be reduced, the residence time of the hot air inside the chamber 1 can be increased, and the heat exchange efficiency can be improved. At the same time, the partitions 4 can also be heated, and the high-temperature partitions 4 can further enhance the drying effect of the fabric 11. The partitions 4 can be made of a metal material with good heat absorption properties.

[0023] like Figure 2 As shown, the air inlet chamber 2 is located below the two sets of partitions 4 inside the housing 1. A blower 17 is used to introduce hot air into the air inlet chamber 2. After entering the air inlet chamber 2, the hot air dries the fabric 11 from bottom to top. The feed roller 7 and the output roller 8 are rotatably mounted outside the housing 1 at the input end of the upper channel 5 and the output end of the lower channel 6, respectively. The feed roller 7 guides the fabric 11 into the upper channel 5, and the output roller 8 drives the fabric 11 out of the lower channel 6. A motor can be installed on the housing 1 to drive the feed roller 7 and the output roller 8. A guide assembly is used to guide the fabric 11 from the upper channel 5 into the lower channel 6. The feed roller 7 and the output roller 8 are tangent to the centerline of the upper channel 5 and the centerline of the lower channel 6, respectively.

[0024] The guiding assembly includes guide roller 9 and guide roller 10, which are rotatably mounted outside the housing 1 at the output end of the upper channel 5 and the input end of the lower channel 6, respectively. The upper surface of guide roller 9 is tangent to the centerline of the upper channel 5, and the lower surface of guide roller 10 is tangent to the centerline of the lower channel 6. The guide rollers prevent the fabric 11 from contacting the housing 1 or the partition 4.

[0025] like Figure 3-4 As shown, this device also includes a flue gas waste heat recovery device, which includes a frame 12, a housing 13, and a waste gas inlet assembly. The housing 13 has a flue gas channel 14 along its length. The front and rear ends of the flue gas channel 14 are an air inlet 15 and an air outlet 16. The flue gas waste heat recovery device can be set in multiple sections. Several sections of the flue gas waste heat recovery device are connected through the air inlets 15 and outlets 16 at the beginning and end. The waste gas inlet assembly is used to introduce the high-temperature waste gas generated by the setting machine into the air inlet of the flue gas channel 14. The air outlet 16 of the last section of the flue gas waste heat recovery device is connected to the waste gas purification equipment. The purification equipment is not the focus of protection in this case, so it will not be described in detail.

[0026] Heat exchange tubes are arranged inside the shell 13, and the outlet end of the heat exchange tubes is connected to the air inlet fan 3.

[0027] like Figure 4As shown, the heat exchange tubes consist of a coarse heat exchange tube group 18 and a fine heat exchange tube group 19. In this embodiment, two sections of coarse heat exchange tube groups 18 and fine heat exchange tube groups 19 are respectively provided. Each section of coarse heat exchange tube group 18 consists of several coarse heat exchange tubes arranged in a matrix, and each section of fine heat exchange tube group 19 consists of several fine heat exchange tubes arranged in a matrix. The two sections of coarse heat exchange tube groups 18 are located at the front of the shell 13, and the two sections of fine heat exchange tube groups 19 are located at the rear of the shell 13. Air is introduced into the inlet end of the first section of coarse heat exchange tube group 18 through an induced draft fan. The first two sections of coarse heat exchange tube group 18 are connected through a closed bend channel provided in the shell 13. The rear section of coarse heat exchange tube group 18 and the first section of fine heat exchange tube group 19 are connected through a closed bend channel provided in the shell 13. The two sections of fine heat exchange tube group 19 are connected through a closed bend channel provided in the shell 13. The end of the last section of fine heat exchange tube group 19 is connected to the inlet fan 3. This results in the coarse heat exchange tube group 18 and the fine heat exchange tube group 19 being arranged in a serpentine reciprocating pattern within the shell 13.

[0028] By dividing the heat exchange tubes into two groups of different thicknesses, namely a coarse heat exchange tube group 18 and a fine heat exchange tube group 19, when the low-temperature air enters the coarse heat exchange tube 18, the air can quickly absorb heat because the exhaust gas temperature is also relatively high. When the exhaust gas enters the fine heat exchange tube 19, the exhaust gas temperature decreases. The fine heat exchange tube 19 has more heat exchange tubes in the same cross-section, thereby increasing the contact area of ​​the exhaust gas. By increasing the contact area, the heat exchange efficiency of the relatively low-temperature exhaust gas is improved, thus improving the thermal energy conversion rate of the exhaust gas.

[0029] 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. An energy-saving pre-drying circulating oven, characterized in that: The device includes a housing (1), two sets of partitions (4), a feed roller (7), an output roller (8), a guide assembly, and a blower (17). The two sets of partitions (4) are stacked on top of the housing (1), forming an upper channel (5) and a lower channel (6) between the two sets of partitions (4). The air inlet chamber (2) is located below the two sets of partitions (4) inside the housing (1). The blower (17) is used to introduce hot air into the air inlet chamber (2). The feed roller (7) and the output roller (8) are respectively located outside the housing (1) at the input end of the upper channel (5) and the output end of the lower channel (6). The guide assembly is used to introduce the fabric (11) coming out of the upper channel (5) into the lower channel (6). The two sets of partitions (4) have dense holes.

2. The energy-saving pre-drying circulating oven according to claim 1, characterized in that: The guiding assembly includes guide roller one (9) and guide roller two (10), which are respectively located outside the housing (1) at the output end of the upper channel (5) and the input end of the lower channel (6).

3. The energy-saving pre-drying circulating oven according to claim 1, characterized in that: It also includes a flue gas waste heat recovery device, which includes a frame (12), a housing (13), and a waste gas inlet assembly. The housing (13) has a flue gas passage (14) along its length. The front and rear ends of the flue gas passage (14) are an air inlet (15) and an air outlet (16). The waste gas inlet assembly is used to introduce waste gas into the air inlet of the flue gas passage (14). A heat exchange tube is arranged inside the housing (13), and the outlet end of the heat exchange tube is connected to the air inlet fan (3).

4. The energy-saving pre-drying circulating oven according to claim 3, characterized in that: The heat exchange tubes consist of a coarse heat exchange tube group (18) and a fine heat exchange tube group (19). The coarse heat exchange tube group (18) and the fine heat exchange tube group (19) are connected end to end. The coarse heat exchange tube group (18) is located at the front of the shell (13), and the fine heat exchange tube group (19) is located at the rear of the shell (13). The end of the fine heat exchange tube group (19) is connected to the air inlet fan (3).

5. An energy-saving pre-drying circulating oven according to claim 4, characterized in that: The flow direction of the coarse heat exchange tube group (18) and the fine heat exchange tube group (19) is arranged in a serpentine reciprocating pattern within the shell (13).

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