Multi-temperature-zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace

Abstract

The present application relates to the technical field of memory cotton processing, and particularly relates to a multi-temperature-zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace. The present application aims to provide a multi-temperature-zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace which can uniformly bake memory cotton in all directions, improve the utilization rate of heat energy and realize continuous and automatic production. The multi-temperature-zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace comprises a first tunnel furnace arranged along a first conveying direction; a second tunnel furnace arranged along a second conveying direction; the first conveying direction is perpendicular to the second conveying direction, so that the first tunnel furnace and the second tunnel furnace jointly form an L-shaped layout; and a turnover and change-over conveying line is arranged between the outlet of the first tunnel furnace and the inlet of the second tunnel furnace. The present application can uniformly bake memory cotton in all directions, improve the utilization rate of heat energy and realize continuous and automatic production.

Description

Technical Field

[0001] This invention relates to the field of memory foam processing technology, and in particular to a multi-temperature zone adjustable continuous hot air circulation deodorization tunnel oven for memory foam. Background Technology

[0002] Memory foam, a high-molecular polymer material with slow rebound properties, is widely used in home furnishings such as mattresses and pillows due to its excellent comfort and support. However, during the production process of memory foam, the raw materials and foaming process inevitably introduce or generate some volatile organic compounds, resulting in odor problems in the product. In order to eliminate these odors and improve product quality and consumer experience, hot air baking is a crucial post-processing step in the production process.

[0003] Currently, the industry commonly uses traditional single-line tunnel ovens to bake and deodorize memory foam. This equipment has several significant technical drawbacks: First, because memory foam blocks are typically thick and soft, the traditional method of blowing hot air from top to bottom or one side makes it difficult for the hot air to penetrate evenly and fully onto all surfaces, especially the bottom and sides, which easily create baking dead zones, leading to incomplete deodorization. Second, to ensure deodorization effectiveness, it is often necessary to extend the baking time or increase the baking temperature, which not only results in low production efficiency but also causes huge energy consumption. Therefore, there is an urgent need to develop a multi-temperature zone adjustable continuous hot air circulation deodorization tunnel oven for memory foam that can bake memory foam evenly from all directions, improve heat energy utilization, and achieve continuous and automated production. Summary of the Invention

[0004] In order to overcome the shortcomings of traditional single linear tunnel ovens, which blow hot air from top to bottom or from one side, making it difficult to evenly and fully penetrate all surfaces of memory foam, especially the bottom and sides where baking dead zones are easily formed, resulting in incomplete deodorization, the present invention aims to provide a multi-temperature zone adjustable continuous hot air circulation deodorization tunnel oven for memory foam that can bake memory foam evenly from all directions, improve heat energy utilization, and realize continuous and automated production.

[0005] This invention is achieved through the following specific technical means:

[0006] A multi-temperature zone adjustable memory foam continuous hot air circulation deodorizing tunnel oven includes a first tunnel oven arranged along a first conveying direction and a second tunnel oven arranged along a second conveying direction; the first conveying direction and the second conveying direction are perpendicular to each other, such that the first tunnel oven and the second tunnel oven together form an L-shaped layout.

[0007] A reversing conveyor line is provided between the outlet of the first tunnel furnace and the inlet of the second tunnel furnace; the reversing conveyor line includes a first roller conveyor line connected to the outlet end of the first tunnel furnace for receiving memory foam blocks from the first tunnel furnace; a second roller conveyor line connected to the inlet end of the second tunnel furnace for conveying memory foam blocks to the second tunnel furnace; the conveying direction of the first roller conveyor line is perpendicular to the conveying direction of the second roller conveyor line; a reversing device disposed in the middle of the first roller conveyor line or the second roller conveyor line for clamping and reversing the memory foam blocks; and a pushing device disposed at the end of the first roller conveyor line for pushing the memory foam blocks on the first roller conveyor line to the second roller conveyor line.

[0008] The first tunnel oven includes a first oven body and a first conveyor belt disposed inside the first oven body; the first oven body is provided with a preheating zone and a first hot air baking zone in sequence along a first conveying direction; a preheating component is disposed in the preheating zone; a first hot air baking component is disposed above the first conveyor belt in the first hot air baking zone for blowing hot air onto the upper surface and left and right sides of the memory foam block.

[0009] The second tunnel oven includes a second oven body and a second conveyor belt disposed within the second oven body; the second oven body is provided with a second hot air baking zone and a cooling zone in sequence along the second conveying direction; a second hot air baking component is disposed above the second conveyor belt in the second hot air baking zone for blowing hot air onto the upper surface and left and right sides of the flipped memory foam block; a cooling component is disposed in the cooling zone.

[0010] Furthermore, the first hot air baking assembly includes a first top surface baking plate disposed above the first conveyor belt for uniformly blowing hot air onto the upper surface of the memory foam block; and first side surface baking plates disposed on both sides of the first conveyor belt for uniformly blowing hot air onto the left and right sides of the memory foam block; the first top surface baking plate and the first side surface baking plate are respectively connected to the first hot air blower through the first hot air conveying pipe.

[0011] The second hot air baking assembly includes a second top surface baking plate disposed above the second conveyor belt for uniformly blowing hot air onto the upper surface of the memory foam block; and second side surface baking plates disposed on both sides of the second conveyor belt for uniformly blowing hot air onto the left and right sides of the memory foam block; the second top surface baking plate and the second side surface baking plate are respectively connected to the second hot air blower through the second hot air conveying pipe.

[0012] Furthermore, the flipping device includes fixed blocks fixedly connected to both sides of the first roller conveyor line or the second roller conveyor line; a rotating shaft rotatably mounted between the two fixed blocks; a flipping frame fixedly connected to the rotating shaft; a fixed housing fixedly connected to one side of the fixed block; and a rotary motor fixedly connected to the fixed housing; the output shaft of the rotary motor extends into the fixed housing and is fixedly connected to one end of the rotating shaft.

[0013] Furthermore, the pushing device includes several fixed plates, a sliding shaft installed between the fixed plates, a linear bearing sleeved on the sliding shaft, a movable plate fixedly connected to the linear bearing, a connecting rod fixedly connected to the movable plate, a push plate fixedly connected to the connecting rod, a cylinder fixedly mounted on a fixed seat, and a connecting block connecting the cylinder piston rod and the movable plate.

[0014] Furthermore, it also includes a heat exchange and purification system, which includes a first air collecting plate located below the first conveyor belt in the first hot air baking zone; a second air collecting plate located below the second conveyor belt in the second hot air baking zone; a first waste gas conveying pipe connected to the first and second air collecting plates; a heat exchange device located on one side of the first waste gas conveying pipe; and a purification device located on one side of the heat exchange device. The heat exchange device is a tubular heat exchanger, including a hot waste gas inlet, a cold waste gas outlet, a cold air inlet, and a hot air outlet. The hot waste gas inlet of the heat exchange device is fixedly connected to the first waste gas conveying pipe. The cold waste gas outlet of the heat exchange device is connected to the inlet of the purification device. A fan is installed at the cold air inlet of the heat exchange device. In the cooling zone, a third air collecting plate is also located below the second conveyor belt. The third air collecting plate is connected to the inlet of the purification device through the second waste gas conveying pipe.

[0015] Furthermore, the preheating component includes preheating air distribution plates located in the preheating zone and respectively disposed on the upper and lower sides of the first conveyor belt; the preheating air distribution plates are connected to the hot air outlet of the heat exchange device through air supply pipes; used to supply the recovered heat energy to the preheating zone.

[0016] Furthermore, the cooling assembly includes a cooling air distribution plate located within the cooling zone and disposed on the upper side of the second conveyor belt; the cooling air distribution plate is connected to the cooler via a cold air delivery pipe.

[0017] Furthermore, the purification device is a catalytic oxidation device that can decompose volatile organic compounds into carbon dioxide and water, rather than simply adsorbing them, making it more environmentally friendly and efficient.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention achieves the effect of baking memory foam in all directions and evenly, improving heat energy utilization, and realizing continuous and automated production.

[0020] By combining an L-shaped layout with a flip-and-reverse mechanism, the six sides of the memory foam block are baked in a segmented, directional, and efficient manner. The system also integrates heat recovery and exhaust gas purification, ultimately achieving efficient, uniform deodorization and energy-saving and environmentally friendly results. Attached Figure Description

[0021] Figure 1 This is a top view of the structure of the present invention.

[0022] Figure 2 This is a schematic cross-sectional view of the first tunnel furnace of the present invention.

[0023] Figure 3 This is a schematic cross-sectional view of the second tunnel furnace of the present invention.

[0024] Figure 4 This is a schematic diagram of the heat exchange and purification system of the present invention.

[0025] Figure 5 This is a schematic diagram of the cooling component structure of the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the reversing conveyor line of the present invention.

[0027] Figure 7 This is a three-dimensional structural diagram of the flipping device of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the pushing device of the present invention.

[0029] The labels in the attached diagram are as follows: 1-First tunnel furnace, 2-Second tunnel furnace, 3-Tilting and reversing conveyor line, 4-Heat exchange and purification system, 11-First furnace body, 12-First conveyor belt, 13-Preheating zone, 14-First hot air baking zone, 15-Preheating component, 16-First hot air baking component, 21-Second furnace body, 22-Second conveyor belt, 23-Second hot air baking zone, 24-Cooling zone, 25-Second hot air baking component, 26-Cooling component, 31-First roller conveyor line, 32-Second roller conveyor line, 33-Tilting device, 34-Pushing device, 41-First air collecting plate, 42-Second air collecting plate, 43-First waste gas conveying pipe, 44-Heat exchange device, 45-Purification device, 46-Fan, 47-Third air collecting plate, 48- Second exhaust gas conveying pipe, 151-preheating air distribution plate, 152-air supply pipe, 161-first top baking plate, 162-first side baking plate, 163-first hot air blower, 164-first hot air conveying pipe, 251-second top baking plate, 252-second side baking plate, 253-second hot air blower, 254-second hot air conveying pipe, 261-cooling air distribution plate, 262-cold air blower, 263-cold air conveying pipe, 331-fixed block, 332-rotating shaft, 333-tilting frame, 334-fixed housing, 335-rotary motor, 341-fixed plate, 342-sliding shaft, 343-linear bearing, 344-moving plate, 345-connecting rod, 346-push plate, 347-fixed seat, 348-cylinder, 349-connecting block. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings: Example

[0031] A multi-temperature zone adjustable memory foam continuous hot air circulation deodorizing tunnel oven, such as Figure 1-8 As shown, it includes a first tunnel furnace 1 arranged along a first conveying direction; and a second tunnel furnace 2 arranged along a second conveying direction; the first conveying direction and the second conveying direction are perpendicular to each other, such that the first tunnel furnace 1 and the second tunnel furnace 2 together form an L-shaped layout.

[0032] A reversing conveyor line 3 is provided between the outlet of the first tunnel furnace 1 and the inlet of the second tunnel furnace 2. The reversing conveyor line 3 includes a first roller conveyor line 31 connected to the outlet end of the first tunnel furnace 1 for receiving memory foam blocks from the first tunnel furnace 1; a second roller conveyor line 32 connected to the inlet end of the second tunnel furnace 2 for conveying memory foam blocks to the second tunnel furnace 2; the conveying direction of the first roller conveyor line 31 is perpendicular to the conveying direction of the second roller conveyor line 32; a reversing device 33 disposed in the middle of the first roller conveyor line 31 or the second roller conveyor line 32 for clamping and reversing the memory foam blocks; and a pushing device 34 disposed at the end of the first roller conveyor line 31 for pushing the memory foam blocks on the first roller conveyor line 31 to the second roller conveyor line 32.

[0033] The first tunnel oven 1 includes a first oven body 11 and a first conveyor belt 12 disposed within the first oven body 11; the first oven body 11 is provided with a preheating zone 13 and a first hot air baking zone 14 in sequence along a first conveying direction; a preheating component 15 is disposed within the preheating zone 13; a first hot air baking component 16 is disposed above the first conveyor belt 12 in the first hot air baking zone 14 for blowing hot air onto the upper surface and left and right sides of the memory foam block;

[0034] The second tunnel oven 2 includes a second oven body 21 and a second conveyor belt 22 disposed within the second oven body 21; the second oven body 21 is provided with a second hot air baking zone 23 and a cooling zone 24 in sequence along the second conveying direction; a second hot air baking assembly 25 is disposed above the second conveyor belt 22 in the second hot air baking zone 23 for blowing hot air onto the upper surface and left and right sides of the flipped memory foam block; a cooling assembly 26 is disposed in the cooling zone 24.

[0035] Working principle:

[0036] The tunnel oven of this invention combines an L-shaped layout with a flipping and reversing mechanism to achieve segmented, directional, and efficient baking of the six sides of the memory foam block. It also integrates a heat recovery and exhaust gas purification system, ultimately achieving efficient, uniform deodorization and energy conservation.

[0037] The memory foam block first enters the first tunnel oven 1. In the preheating zone 13, the hot air recovered by the heat exchange and purification system 4 is evenly blown onto the memory foam block through the upper and lower preheating air distribution plates 151, so that it is initially heated evenly and the surface skin is avoided due to the impact of subsequent high-temperature hot air. Then, the memory foam block enters the first hot air baking zone 14. The first hot air baking component 16 is activated. The first top baking plate 161 and the first side baking plate 162 bake the upper surface and the left and right sides of the memory foam block with hot air from above and from the left and right sides towards the center, respectively, and volatilize odor molecules.

[0038] After being baked in the first tunnel oven 1, the memory foam block is fed into the turning and reversing conveyor line 3 by the first conveyor belt 12. First, the first roller conveyor line 31 receives and transports the memory foam block. When it reaches the designated position, the turning device 33 is activated. The motor drives the rotating shaft 332 and the turning frame 333 to rotate, accurately clamping and turning the memory foam block 180 degrees. Then, the cylinder 348 of the pushing device 34 drives the push plate 346 to push the turned memory foam block laterally from the first roller conveyor line 31 to the second roller conveyor line 32, which is perpendicular to it. This causes the previously unbaked lower surface to be turned to the top, while the already baked upper surface is transferred to the bottom.

[0039] In the second tunnel oven 2, the memory foam block enters the second hot air baking zone 23. At this time, the second top baking plate 251 and the second side baking plate 252 of the second hot air baking component 25 bake the new top surface and left and right sides of the memory foam block with hot air again. Thus, all six surfaces of the memory foam block have been effectively and evenly treated with hot air, ensuring thorough deodorization. Finally, the memory foam block enters the cooling zone 24, and the cooling air distribution plate 261 of the cooling component 26 blows cold air downwards, so that the memory foam block cools down and sets quickly and evenly, completing the entire processing flow.

[0040] Simultaneously, in the first hot air baking zone 14 and the second hot air baking zone 23, the exhaust gas carrying odors and high temperatures after baking is collected by the first and second air collecting plates 41 and 42 located below them, and then transported to the heat exchange device 44 through the first exhaust gas conveying pipe 43. At the same time, the cold air used for cooling in the cooling zone 24 absorbs heat and is collected by the third air collecting plate 47, and also sent to the purification box through the second exhaust gas conveying pipe 48. In the heat exchange device 44, the heat of the collected high-temperature exhaust gas is exchanged with the ambient temperature fresh air supplied by the fan 46. The heated fresh air is transported to the preheating zone 13 of the first tunnel furnace 1 through the hot air outlet and the air supply pipe 152, serving as a preheating heat source, realizing energy recovery and utilization, and significantly reducing preheating energy consumption. After heat exchange, the temperature of the exhaust gas has been reduced, and it is then sent to the purification box for purification treatment, finally meeting the emission standards and achieving environmentally friendly production.

[0041] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0042] Although this disclosure has been described in detail with reference to exemplary embodiments, it is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of this disclosure.

Claims

1. A multi-temperature-zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace, characterized in that, The first tunnel furnace (1) is arranged along a first conveying direction; the second tunnel furnace (2) is arranged along a second conveying direction; the first conveying direction and the second conveying direction are perpendicular to each other, so that the first tunnel furnace (1) and the second tunnel furnace (2) jointly form an L-shaped layout; The outlet of the first tunnel furnace (1) and the inlet of the second tunnel furnace (2) are provided with a turnover conveying line (3); the turnover conveying line (3) comprises a first roller conveying line (31) connected to the outlet end of the first tunnel furnace (1) and used for receiving the memory cotton block from the first tunnel furnace (1); a second roller conveying line (32) connected to the inlet end of the second tunnel furnace (2) and used for conveying the memory cotton block to the second tunnel furnace (2); the conveying direction of the first roller conveying line (31) is perpendicular to the conveying direction of the second roller conveying line (32); a turnover device (33) is arranged in the middle of the first roller conveying line (31) or the second roller conveying line (32) and used for clamping and turning over the memory cotton block; a pushing device (34) is arranged at the end of the first roller conveying line (31) and used for pushing the memory cotton block on the first roller conveying line (31) to the second roller conveying line (32); The first tunnel furnace (1) comprises a first furnace body (11) and a first conveying mesh belt (12) arranged in the first furnace body (11); the first furnace body (11) is sequentially provided with a preheating zone (13) and a first hot air baking zone (14) along the first conveying direction; the preheating zone (13) is provided with a preheating assembly (15); the first hot air baking zone (14) is provided with a first hot air baking assembly (16) located above the first conveying mesh belt (12) and used for blowing hot air to the upper surface and the left and right side surfaces of the memory cotton block; The second tunnel furnace (2) comprises a second furnace body (21) and a second conveying mesh belt (22) arranged in the second furnace body (21); the second furnace body (21) is sequentially provided with a second hot air baking zone (23) and a cooling zone (24) along the second conveying direction; the second hot air baking zone (23) is provided with a second hot air baking assembly (25) located above the second conveying mesh belt (22) and used for blowing hot air to the upper surface and the left and right side surfaces of the memory cotton block after turning over; the cooling zone (24) is provided with a cooling assembly (26).

2. The multi-temperature zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace according to claim 1, characterized in that, The first hot air baking assembly (16) comprises a first top surface baking disc (161) arranged above the first conveying mesh belt (12) and used for uniformly blowing hot air to the upper surface of the memory cotton block; first side surface baking discs (162) arranged on both sides of the first conveying mesh belt (12) and used for uniformly blowing hot air to the left and right side surfaces of the memory cotton block; the first top surface baking disc (161) and the first side surface baking disc (162) are respectively connected with a first hot air blower (163) through a first hot air conveying pipe (164). The second hot air baking assembly (25) comprises a second top surface baking disc (251) arranged above the second conveying mesh belt (22) and used for uniformly blowing hot air to the upper surface of the memory cotton block; second side surface baking discs (252) arranged on both sides of the second conveying mesh belt (22) and used for uniformly blowing hot air to the left and right side surfaces of the memory cotton block; the second top surface baking disc (251) and the second side surface baking disc (252) are connected with the second air blower (253) through the second hot air conveying pipe (254) respectively.

3. The multi-temperature zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace according to claim 1, characterized in that, The turnover device (33) comprises fixed blocks (331) fixedly connected to both sides of the first roller conveying line (31) or the second roller conveying line (32), a rotating shaft (332) rotatably installed between the two fixed blocks (331), a turnover frame (333) fixedly connected to the rotating shaft (332), a fixed shell (334) fixedly connected to one side of the fixed block (331), and a rotating motor (335) fixedly connected to the fixed shell (334); the output shaft of the rotating motor (335) extends into the fixed shell (334) and is fixedly connected with one end of the rotating shaft (332).

4. The multi-temperature zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace according to claim 1, characterized in that, The pushing device (34) comprises a plurality of fixed plates (341), sliding shafts (342) installed between the fixed plates (341), linear bearings (343) sleeved on the sliding shafts (342), moving plates (344) fixedly connected with the linear bearings (343), connecting rods (345) fixedly connected with the moving plates (344), push plates (346) fixedly connected with the connecting rods (345), air cylinders (348) fixedly arranged on fixed seats (347), and connecting blocks (349) connecting the piston rods of the air cylinders (348) and the moving plates (344).

5. The multi-temperature zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace according to claim 1, characterized in that, The heat exchange and purification system (4) arranged in the first tunnel furnace (1) and the second tunnel furnace (2) is also included; the heat exchange and purification system (4) comprises a first air collecting disc (41) arranged in the first hot air baking area (14) and located below the first conveying mesh belt (12), a second air collecting disc (42) arranged in the second hot air baking area (23) and located below the second conveying mesh belt (22), a first waste gas conveying pipe (43) in communication with the first air collecting disc (41) and the second air collecting disc (42), a heat exchange device (44) arranged on one side of the first waste gas conveying pipe (43), a purification device (45) arranged on one side of the heat exchange device (44), the heat exchange device (44) being a tubular heat exchanger and comprising a hot waste gas inlet, a cold waste gas outlet, a cold air inlet and a hot air outlet, the hot waste gas inlet of the heat exchange device (44) being fixedly communicated with the first waste gas conveying pipe (43), the cold waste gas outlet of the heat exchange device (44) being in communication with the inlet of the purification device (45), a fan (46) being arranged at the cold air inlet of the heat exchange device (44), and a third air collecting disc (47) being further arranged below the second conveying mesh belt (22) in the cooling area (24) and in communication with the inlet of the purification device (45) through a second waste gas conveying pipe (48).

6. The multi-temperature zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace according to claim 5, characterized in that, The preheating assembly (15) comprises preheating air distribution discs (151) arranged on the upper and lower sides of the first conveying mesh belt (12) in the preheating area (13), and the preheating air distribution discs (151) are connected with the hot air outlet of the heat exchange device (44) through air supply pipes (152).

7. The multi-temperature zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace according to claim 1, characterized in that, The cooling assembly (26) comprises a cooling air distribution disc (261) arranged on the upper side of the second conveying mesh belt (22) in the cooling area (24), and the cooling air distribution disc (261) is connected with the air cooler (262) through a cooling air supply pipe (263).

8. The multi-temperature zone adjustable memory cotton continuous hot air circulation deodorization tunnel furnace according to claim 5, characterized in that, The purification device (45) is a catalytic oxidation device.

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