A multi-stage hot air drying oven for TPU fibers

Abstract

The utility model relates to hot -blast drying box technical field, concretely refers to a kind of TPU fiber multistage hot -blast drying box. Including cabinet, there is stirring subassembly in cabinet, there is frame in cabinet outside, cabinet includes inner box and outer box, and inner box is in outer box, there is heat preservation cavity between inner box and outer box, and there is partition in heat preservation cavity, the top and bottom of inner box are respectively inlet pipe and discharge pipe, and a plurality of hot -blast machines are fixedly arranged on outer box and are arranged with several hot -blast machines, and hot -blast machine blows hot air into heat preservation cavity, and the temperature controlled by each hot -blast machine is not identical;Stirring subassembly is arranged in inner box, the stirring rod on stirring subassembly is divided into several stirring areas, and adjacent two stirring areas are provided with spiral introduction component, and drive component for simultaneously driving several spiral introduction components to work is arranged in heat preservation cavity. The utility model provides a kind of drying of different temperature can be classified, TPU fiber multistage hot -blast drying box of TPU fiber in stirring area between introduction convenient.

Description

Technical Field

[0001] This utility model relates to the field of hot air drying oven technology, specifically to a TPU fiber multi-stage hot air drying oven. Background Technology

[0002] TPU (thermoplastic polyurethane) fiber, as a high-performance elastic fiber, is widely used in textiles, medical devices, and sporting goods. Drying is a crucial process in TPU fiber production, directly affecting the fiber's physical properties and quality. Traditional hot air drying ovens typically use hot air at a single temperature to dry TPU fibers. However, because TPU fibers have different temperature requirements at different drying stages, drying at a single temperature can easily lead to uneven heating, affecting drying efficiency and product quality.

[0003] In addition, the stirring structure of traditional drying ovens is mostly a simple blade stirring. Although it can turn the fibers over, it lacks an effective introduction mechanism when the fibers are transferred from the high temperature area to the low temperature area, which can easily cause fiber accumulation or blockage, affecting the continuity and uniformity of drying.

[0004] The following drawbacks were discovered during use:

[0005] 1. Traditional drying ovens typically use hot air at a single temperature for drying, while TPU fibers require different temperature controls at different drying stages (such as preheating, main drying, and cooling). A single temperature mode cannot meet the process requirements of fiber drying, which may result in the fiber surface being too dry while leaving moisture inside, or localized overheating leading to a decline in fiber performance;

[0006] 2. Traditional drying ovens typically use fixed blade agitators. The lack of an effective guiding mechanism for fiber transfer from one agitation zone to another easily leads to fiber accumulation or impaired transfer. This not only affects drying efficiency but can also cause fiber entanglement or blockage, increasing the difficulty of equipment maintenance.

[0007] Therefore, based on this, we studied and improved the existing structure and proposed a multi-stage hot air drying oven for TPU fibers. Utility Model Content

[0008] The technical problem this invention aims to solve is the inability to dry at different temperatures in stages, and the inconvenience of introducing TPU fibers between stirring zones.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a multi-stage hot air drying oven for TPU fibers, including a box body, a stirring assembly is provided inside the box body, a frame is fixedly provided on the outside of the box body, the box body includes a cylindrical inner box and a cylindrical outer box, and the inner box is fixedly installed inside the outer box, a heat preservation cavity is provided between the inner box and the outer box, and a partition plate is fixedly provided inside the heat preservation cavity, an inlet pipe and an outlet pipe are fixedly provided through the top and bottom of the inner box, and the inlet pipe and the outlet pipe are fixedly provided through the top and bottom of the outer box, respectively, and a number of hot air blowers are fixedly provided through the outer box, and the hot air blowers blow hot air into the heat preservation cavity, and the temperature controlled by each hot air blower is different;

[0010] The stirring assembly is installed inside the inner chamber. The stirring rod on the stirring assembly is divided into several stirring zones, and a spiral guide assembly is provided between two adjacent stirring zones. A drive assembly that simultaneously drives several spiral guide assemblies is provided inside the heat preservation cavity.

[0011] As a further embodiment of this utility model: both the feed pipe and the discharge pipe are threadedly connected to a cover, and an insert rod is fixedly installed inside the cover. The size of the insert rod is adapted to the corresponding feed pipe and discharge pipe, and the insert rod prevents TPU fibers from directly entering the feed pipe and discharge pipe during the drying process.

[0012] As a further embodiment of this utility model, the frame is fixedly installed on the outside of the outer box.

[0013] As a further embodiment of this utility model: a plurality of stirring blades are provided in the stirring area, and the stirring blades are fixedly mounted on the stirring rod, and a motor for driving the stirring rod to rotate is fixedly mounted on one side of the outer casing.

[0014] As a further embodiment of this utility model: the spiral inlet assembly includes a rotating cylinder movably sleeved on the stirring rod, and spiral blades are fixedly wound around the rotating cylinder.

[0015] As a further embodiment of this utility model: the driving assembly includes a rotating rod rotatably disposed within the insulation cavity; a plurality of protective shells are fixedly disposed through the inner box; the rotating rod and the stirring rod both movably pass through the plurality of protective shells; one end of the rotating cylinder rotatably passes through the protective shell; and the rotating cylinder is rotatably connected to the protective shell through a bearing; a synchronous belt is disposed between the rotating cylinder and the rotating rod; and the synchronous belt is located inside the protective shell; and a second motor for driving the rotating rod to rotate is fixedly disposed on one side of the outer box.

[0016] Compared with the prior art, the advantages of this utility model are as follows:

[0017] 1. This utility model can achieve precise control of different temperature zones by setting up an insulation cavity between the inner and outer boxes and equipping it with multiple independently temperature-controlled hot air blowers.

[0018] During the drying process, TPU fibers can be treated with hot air at different temperatures in sequence. For example, first, high temperature is used to quickly evaporate the moisture, then medium temperature is used for uniform drying, and finally low temperature is used to stabilize the fiber structure, thus avoiding problems such as local overheating or uneven drying.

[0019] The partition further optimizes the hot air flow path, ensuring stable temperature in each zone and improving drying efficiency.

[0020] 2. The stirring rod of this utility model is divided into multiple stirring zones, and a spiral guide component is set between adjacent zones. The rotation of the spiral blades promotes the smooth transition of fibers, avoiding fiber accumulation or jamming caused by traditional stirring methods.

[0021] The drive assembly links all spiral inlet components via a synchronous belt, ensuring synchronized and efficient fiber delivery in each area and reducing the need for manual intervention and maintenance. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of a multi-stage hot air drying oven for TPU fibers according to this utility model.

[0024] Figure 2 This is a cross-sectional view of a multi-stage hot air drying oven for TPU fibers according to this utility model. Figure 1 .

[0025] Figure 3 This is a cross-sectional view of a multi-stage hot air drying oven for TPU fibers according to this utility model. Figure 2 .

[0026] Figure 4 This is a schematic diagram of the spiral inlet assembly structure of a TPU fiber multi-stage hot air drying oven according to this utility model.

[0027] In the attached image:

[0028] 1. Housing; 2. Mixing assembly; 3. Spiral guide assembly; 4. Drive assembly; 5. Hot air blower; 6. Frame; 101. Inner box; 102. Outer box; 103. Insulation chamber; 104. Divider plate; 105. Feed pipe; 106. Discharge pipe; 107. Cover; 201. Mixing rod; 202. Mixing blade; 203. Motor 1; 301. Rotary drum; 302. Spiral blade; 401. Rotating rod; 402. Protective shell; 403. Motor 2; 404. Synchronous belt. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-3 A multi-stage hot air drying oven for TPU fibers includes a box body 1 with a double-layer design. A stirring assembly 2 is installed inside the box body 1, and a frame 6 is fixedly installed on the outside of the box body 1. The box body 1 includes a cylindrical inner box 101 and a cylindrical outer box 102, with the inner box 101 fixedly installed inside the outer box 102 and the frame 6 fixedly installed on the outside of the outer box 102. A heat insulation cavity 103 is provided between the inner box 101 and the outer box 102, and a partition plate 104 is fixedly installed inside the heat insulation cavity 103, dividing the heat insulation cavity into multiple independent temperature zones, each corresponding to a hot air blower 5. The top and bottom of the inner box 101 are respectively fixedly connected by an inlet pipe 105 and an outlet pipe 106, and the inlet pipe 105 and the outlet pipe 106 are respectively fixedly connected through the top and bottom of the outer box 102. The inlet pipe 105 and the outlet pipe 106 are both threadedly connected to a cover 107, and an insert rod is fixedly installed inside the cover 107. The size of the insert rod is adapted to the corresponding inlet pipe 105 and outlet pipe 106. The insert rod prevents TPU fibers from directly entering the inlet pipe 105 and the outlet pipe 106 during the drying process, and prevents the TPU fibers entering the pipes from not being stirred. Several hot air blowers 5 are fixedly and continuously installed on the outer casing 102, and the hot air blowers 5 blow hot air into the insulation cavity 103. Each hot air blower 5 controls a different temperature and delivers hot air of different temperatures to different temperature zones of the insulation cavity 103 (such as high temperature zone 120℃, medium temperature zone 80℃, and low temperature zone 50℃). The hot air circulates in the insulation cavity and heats the TPU fibers evenly through the inner casing wall. The partition plate 104 ensures that the temperature of each temperature zone is independently controllable.

[0031] Please see Figure 1-4The mixing assembly 2 is located inside the inner box 101. The mixing rod 201 on the mixing assembly 2 is divided into several mixing zones. Several mixing blades 202 are provided in each mixing zone to agitate the fibers and promote drying. The mixing blades 202 are fixedly mounted on the mixing rod 201. A motor 203 for driving the mixing rod 201 to rotate is fixedly mounted on one side of the outer box 102. A spiral guide assembly 3 is provided between two adjacent mixing zones. The spiral guide assembly 3 includes a rotating drum 301 movably sleeved on the mixing rod 201. Spiral blades 302 are fixedly wound around the rotating drum 301. When the spiral blades 302 rotate, they push the fibers to the next zone smoothly, avoiding manual intervention or fiber accumulation. The insulation cavity 103 is equipped with a drive assembly 4 that simultaneously drives several spiral inlet components 3. The drive assembly 4 includes a rotating rod 401 rotatably disposed in the insulation cavity 103. Several protective shells 402 are fixedly disposed through the inner box 101. The rotating rod 401 and the stirring rod 201 both movably pass through the several protective shells 402. One end of the rotating drum 301 rotatably passes through the protective shell 402, and the rotating drum 301 is rotatably connected to the protective shell 402 through a bearing. A synchronous belt 404 is disposed between the rotating drum 301 and the rotating rod 401, and the synchronous belt 404 is located inside the protective shell 402. A motor 403 that drives the rotating rod 401 to rotate is fixedly disposed on one side of the outer box 102.

[0032] Motor 403 drives the rotating rod 401 to rotate, which in turn drives the synchronous belt 404 to move, causing the rotating drum 301 connected to the synchronous belt 404 to rotate, which in turn drives the spiral blade 302 to rotate, so that the TPU fibers move from one mixing zone to another.

[0033] The working principle of this utility model:

[0034] 1. Feeding: Open the feed pipe cover 107 and feed the wet TPU fiber into the inner box 101 through the feed pipe 105.

[0035] 2. Multi-stage drying:

[0036] When motor 203 starts, it drives the stirring rod 202 to rotate, and the stirring blades 202 disperse the fibers and heat them.

[0037] The hot air blower 5 delivers air to each temperature zone according to the set temperature, and the fibers pass through the high temperature, medium temperature and low temperature zones in sequence to complete the step drying.

[0038] Motor 2 403 drives the rotating rod 401, which in turn causes all the spiral guide components 3 to operate synchronously via the synchronous belt 404. The fibers are gradually pushed towards the discharge end by the spiral blades 302.

[0039] 3. Discharge: The dried fibers are discharged through the discharge pipe 106. After the cover 107 is closed, the next batch operation can be carried out.

[0040] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multi-stage hot air drying oven for TPU fibers, comprising a box body (1), wherein a stirring assembly (2) is disposed inside the box body (1), and a frame (6) is fixedly disposed on the outside of the box body (1), characterized in that: The box (1) includes a cylindrical inner box (101) and a cylindrical outer box (102), and the inner box (101) is fixedly installed inside the outer box (102). A heat insulation cavity (103) is provided between the inner box (101) and the outer box (102), and a partition plate (104) is fixedly installed inside the heat insulation cavity (103). An inlet pipe (105) and an outlet pipe (106) are fixedly installed through the top and bottom of the inner box (101), respectively. The inlet pipe (105) and the outlet pipe (106) are fixedly installed through the top and bottom of the outer box (102), respectively. Several hot air blowers (5) are fixedly installed through the outer box (102), and the hot air blowers (5) blow hot air into the heat insulation cavity (103). The temperature controlled by each hot air blower (5) is different. The stirring assembly (2) is installed inside the inner box (101). The stirring rod (201) on the stirring assembly (2) is divided into several stirring areas, and a spiral guide assembly (3) is provided between two adjacent stirring areas. A drive assembly (4) is provided inside the heat preservation cavity (103) to drive several spiral guide assemblies (3) to work simultaneously.

2. The TPU fiber multi-stage hot air drying oven according to claim 1, characterized in that: Both the feed pipe (105) and the discharge pipe (106) are threadedly connected to a cover (107), and an insert rod is fixedly installed inside the cover (107). The size of the insert rod is adapted to the corresponding feed pipe (105) and discharge pipe (106). The insert rod prevents TPU fibers from directly entering the feed pipe (105) and discharge pipe (106) during the drying process.

3. The TPU fiber multi-stage hot air drying oven according to claim 1, characterized in that: The frame (6) is fixedly installed on the outside of the outer box (102).

4. The TPU fiber multi-stage hot air drying oven according to claim 1, characterized in that: The mixing area is provided with several mixing blades (202), and the mixing blades (202) are fixedly mounted on the mixing rod (201). A motor (203) for driving the mixing rod (201) to rotate is fixedly mounted on one side of the outer box (102).

5. A multi-stage hot air drying oven for TPU fibers according to claim 4, characterized in that: The spiral inlet assembly (3) includes a rotating cylinder (301) movably sleeved on the stirring rod (201), and spiral blades (302) are fixedly wound around the rotating cylinder (301).

6. The TPU fiber multi-stage hot air drying oven according to claim 5, characterized in that: The drive assembly (4) includes a rotating rod (401) rotatably disposed in the heat preservation cavity (103). Several protective shells (402) are fixedly disposed through the inner box (101). The rotating rod (401) and the stirring rod (201) are both movably disposed through the several protective shells (402). One end of the rotating cylinder (301) rotatably passes through the protective shell (402), and the rotating cylinder (301) is rotatably connected to the protective shell (402) through a bearing. A synchronous belt (404) is disposed between the rotating cylinder (301) and the rotating rod (401), and the synchronous belt (404) is located inside the protective shell (402). A second motor (403) for driving the rotating rod (401) to rotate is fixedly disposed on one side of the outer box (102).

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