Steam preheating box for polyester fiber production
By designing a steam preheating box for polyester fiber production with an arc-shaped box body and a conical inner box structure, the problems of condensate dripping and inconvenient debris cleaning were solved, achieving efficient preheating and convenient maintenance.
Patent Information
- Application Number
- CN202520057855.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-10
AI Technical Summary
In existing steam preheating boxes used in polyester fiber production, condensate dripping affects fiber quality and is inconvenient to clean, while polyester fiber debris is difficult to handle.
A steam preheating box for polyester fiber production was designed, which adopts an arc-shaped box body and a conical inner box structure, combined with a steam filter plate and a drainage system to prevent condensate dripping and collect debris. Steam is generated through heating pipes for preheating.
It effectively prevents condensate from dripping onto fiber materials, improves fiber quality, facilitates cleaning and maintenance, and enhances preheating efficiency.
Smart Images

Figure CN223837732U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of preheating box technology, and in particular relates to a steam preheating box for polyester fiber production. Background Technology
[0002] Polyester fiber, also known as polyester fiber, is an important type of synthetic fiber. It is a fiber-forming polymer, poly(ethylene terephthalate), produced by esterification or transesterification and polycondensation reactions of purified terephthalic acid or dimethyl terephthalate and ethylene glycol. The fiber is then spun and post-processed. During the production of polyester fiber, a steam preheating box is used to preheat the fiber to improve its processing performance and stabilize its quality.
[0003] However, in some existing steam preheating boxes, when preheating polyester fibers, the steam releases heat inside the preheating box and forms condensate, which may drip onto the polyester fiber material, causing localized increase in fiber humidity and affecting fiber quality. At the same time, polyester fiber debris may fall into the lower part of the box, making cleaning inconvenient. Utility Model Content
[0004] To address the problems existing in the prior art, this utility model provides a steam preheating box for polyester fiber production.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a steam preheating box for polyester fiber production, comprising a box body, a sealed box door movably connected to the surface of the box body, an inner box fixedly connected to the inside of the box body via a fixing frame, a slot being formed on the surface of the inner box, two screens being slidably connected inside the slot, through slots being formed at both the upper and lower ends of the inner box, a steam filter plate being slidably connected inside the inner box, one end of the steam filter plate being movably connected through and extending to the outside of the box body, a heating pipe being provided at the lower inside of the box body, a water inlet pipe being fixedly connected to the surface of the box body, and the inside of the water inlet pipe being connected to the inside of the box body, a first drain pipe being fixedly connected to the surface of the box body, and the inside of the first drain pipe being connected to the inside of the box body, a second drain pipe being fixedly connected to one end of the box body corresponding to the position of the first drain pipe, and the inside of the second drain pipe being connected to the inside of the box body, exhaust holes being formed on both sides of the box body, and an exhaust fan being provided at one end of the box body corresponding to the position of the exhaust hole.
[0006] Furthermore, the upper part of the interior of the box is curved, and the upper part of the inner box is conical.
[0007] Furthermore, a valve is installed on the second drain pipe.
[0008] Compared with the prior art, the beneficial effects of this utility model are:
[0009] 1. Because the upper part of the inner chamber is curved, condensate will slide into the space between the inner chamber and the outer chamber, be blocked by the fixing frame, and then be discharged through the first drain pipe. The top of the inner chamber is conical, and a small amount of condensate may still accumulate during the sliding process and drip directly. The conical top of the inner chamber can prevent most of the condensate from dripping onto the polyester fiber material inside the screen. The steam filter plate can also catch some fallen polyester fiber debris. The steam filter plate is movable and can be pulled out for easy cleaning, making it more convenient to use.
[0010] 2. The heating element heats the water inside the chamber to generate steam. The steam is filtered through a steam filter plate and then enters the inner chamber to preheat the polyester fiber material in the screen. The steam rises upwards along the inner chamber and is exhausted through the ventilation holes and cooling fan. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0012] Figure 2 Cross-sectional view of the overall structure of this utility model Figure 1 .
[0013] Figure 3 Cross-sectional view of the overall structure of this utility model Figure 2 .
[0014] In the diagram: 1. Box body; 2. Inner box; 3. Screen; 4. Steam filter plate; 5. Water inlet pipe; 6. Heating pipe; 7. First drain pipe; 8. Vent; 9. Exhaust fan; 10. Second drain pipe. Detailed Implementation
[0015] 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, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example
[0017] See appendix Figure 1-3 As shown, a steam preheating box for polyester fiber production includes a box body 1. A sealed box door is movably connected to the surface of the box body 1. An inner box 2 is fixedly connected to the inside of the box body 1 via a fixing frame. A slot is opened on the surface of the inner box 2. Two screens 3 are slidably connected inside the slot. Through slots are opened at both the upper and lower ends of the inner box 2. A steam filter plate 4 is slidably connected inside the inner box 2. One end of the steam filter plate 4 movably passes through and extends to the outside of the box body 1. A heating pipe 6 is arranged at the lower part of the inside of the box body 1. A water inlet pipe 5 is fixedly connected to the surface of the box body 1, and the inside of the water inlet pipe 5 is connected to the inside of the box body 1. A first drain pipe 7 is fixedly connected to the surface of the box body 1, and the inside of the first drain pipe 7 is connected to the inside of the box body 1. A second drain pipe 10 is fixedly connected to one end of the box body 1 corresponding to the position of the first drain pipe 7, and the inside of the second drain pipe 10 is connected to the inside of the box body 1. Exhaust holes 8 are opened on both sides of the box body 1. An exhaust fan 9 is arranged at one end of the box body 1 corresponding to the position of the exhaust hole 8.
[0018] The upper part of the inner box 1 is curved, while the upper part of the inner box 2 is conical.
[0019] A valve is installed on the second drain pipe 10.
[0020] Working principle: Upon opening the sealed door, remove the screen 3 and place the polyester fiber material inside. Then, slide the screen 3 into the inner chamber 2 and close the sealed door. Water can be added to the lower part of the chamber 1 via the water inlet pipe 5. The heating pipe 6 heats the water inside the chamber 1 to generate steam. The steam is filtered through the steam filter plate 4 and then enters the inner chamber 2 to preheat the polyester fiber material inside the screen 3. The steam rises upwards along the inner chamber 2 and is exhausted through the heat dissipation holes and cooling fan. Some steam exits from the inner chamber 2. After contacting the top of the housing 1, the steam may produce condensate. Since the upper part of the housing 1 is curved, the condensate will slide into the space between the inner tank 2 and the housing 1, be blocked by the fixing frame, and then discharged through the first drain pipe 7. The top of the inner tank 2 is conical, and a small amount of condensate may still accumulate too much during the sliding process, causing it to drip directly. The conical top of the inner tank 2 can prevent most of the condensate from dripping onto the polyester fiber material in the screen 3. The steam filter plate 4 can also catch some fallen polyester fiber fragments. The steam filter plate 4 is movable and can be pulled out for easy cleaning, making it more convenient to use.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.
[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A steam preheating box for polyester fiber production, comprising a box body (1), wherein a sealed box door is movably connected to the surface of the box body (1), characterized in that: The inner box (2) is fixedly connected to the inside of the box body (1) by a fixing frame. The surface of the inner box (2) is provided with a slot. Two screens (3) are slidably connected inside the slot. The upper and lower ends of the inner box (2) are respectively provided with through slots. A steam filter plate (4) is slidably connected inside the inner box (2). One end of the steam filter plate (4) extends through and to the outside of the box body (1). A heating pipe (6) is provided at the bottom inside the box body (1). A water inlet pipe (5) is fixedly connected to the surface of the box body (1). 5) is connected to the interior of the box (1). The surface of the box (1) is fixedly connected to a first drain pipe (7). The interior of the first drain pipe (7) is connected to the interior of the box (1). The end of the box (1) corresponding to the position of the first drain pipe (7) is fixedly connected to a second drain pipe (10). The interior of the second drain pipe (10) is connected to the interior of the box (1). Both sides of the box (1) are provided with exhaust holes (8). The end of the box (1) corresponding to the position of the exhaust hole (8) is provided with an exhaust fan (9).
2. The steam preheating box for polyester fiber production according to claim 1, characterized in that: The upper part of the inner box (1) is curved, and the upper part of the inner box (2) is conical.
3. The steam preheating box for polyester fiber production according to claim 1, characterized in that: A valve is installed on the second drain pipe (10).