Hot roller for producing medical hydrophilic non-woven fabric

Abstract

The embodiment of the utility model discloses a hot roller for producing medical hydrophilic non-woven fabrics, which comprises a hollow roller, sealing partition plates are mounted at two ends in the roller in a sliding and sealing manner, and a hot oil heating area is formed in a space between the two sealing partition plates; a communicating pipe is installed in the middle of the sealing partition plate in a penetrating mode, one end of the communicating pipe penetrates out of the interior of the rotating shaft and extends to the outer side of one end of the rotating shaft, and the communicating pipe is limited in the rotating shaft through a limiting structure. And one side of the constant-temperature hot oil tank communicates with a hot oil pump, and an outlet of the hot oil pump communicates with one end of one communicating pipe through a first oil pipe. According to the non-woven fabric production device, the hot oil heating area is formed in the space between the two sealing partition plates, the length of the hot oil heating area is flexibly adjusted according to the width of the non-woven fabric during production, the heating area is basically kept consistent with the width of the non-woven fabric, and the problem that the local temperature of the side edge of the non-woven fabric is high is solved.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production technology, and in particular to a hot rolling roll for producing medical hydrophilic nonwoven fabric. Background Technology

[0002] Hydrophilic nonwoven fabrics have a strong ability to absorb liquids and do not cause harm to people, so they are often used to produce medical nonwoven dressings, diapers, kitchen cloths, and sanitary napkins for women.

[0003] During production, the continuous heating of the nonwoven fabric hot press roller can lead to uneven temperature distribution, affecting the hot pressing quality of the nonwoven fabric. In particular, because the length of the hot press roller is greater than the width of the nonwoven fabric, heat is transferred from the areas not in contact with the nonwoven fabric to the contact areas, resulting in higher temperatures on both sides of the hot press roller and lower temperatures in the middle, forming a temperature curve similar to a "boat".

[0004] In this type of nonwoven fabric, the high-temperature areas on both sides are prone to damage to the fiber structure due to excessive heating, resulting in problems such as uneven thickness and reduced strength. In severe cases, the product is easily penetrated by mold, thus posing a risk of mildew. To address this, we propose a hot rolling roller for the production of medical hydrophilic nonwoven fabrics. Utility Model Content

[0005] In view of this, the present invention provides a hot rolling roller for the production of medical hydrophilic nonwoven fabric, which solves the problem in the prior art where the length of the hot rolling roller is greater than the width of the nonwoven fabric, which easily leads to higher temperatures on both sides of the nonwoven fabric during heating.

[0006] A hot rolling roller for producing medical hydrophilic nonwoven fabric includes a hollow roller, with hollow rotating shafts fixedly connected to both ends of the roller. A sealing plate is slidably and sealingly installed at both ends of the roller, and the space between the two sealing plates forms a hot oil heating zone. A connecting pipe is installed through the middle of the sealing plate, with one end of the connecting pipe extending from the inside of the rotating shaft to the outside of one end of the rotating shaft, and the connecting pipe is confined inside the rotating shaft by a limiting structure.

[0007] It also includes a constant temperature hot oil tank, one side of which is connected to a hot oil pump. The outlet of the hot oil pump is connected to one end of a connecting pipe through a first oil pipe. The connecting pipe on another sealing plate is connected to one side of the constant temperature hot oil tank through a second oil pipe.

[0008] Preferably, the aforementioned limiting structure includes multiple uniform baffles fixedly sleeved on the connecting pipe and a handle screw threaded onto the rotating shaft, the lower end of which can be locked between two baffles to limit the position of the connecting pipe.

[0009] Preferably, the surface of the roller is slidably fitted with a high-temperature resistant heat-insulating ring, which is made of perfluororubber.

[0010] Preferably, the above also includes an arc-shaped heat insulation plate, which is spaced above the roller and is fixedly connected to the hot rolling mill by a connecting frame; the rotating shaft is rotatably mounted on the hot rolling mill by bearings.

[0011] Preferably, at least two sets of the aforementioned heat insulation baffles are provided, and the heat insulation baffles located on the outside of the roller are aligned with the sealing plate located inside the roller.

[0012] Preferably, the aforementioned sealing plate is made of high-temperature resistant ceramic, and a sealing ring is fixedly fitted on the circumference of the sealing plate, the sealing ring being made of high-temperature resistant perfluororubber.

[0013] Preferably, the first oil pipe and the second oil pipe are rotatably connected to the connecting pipe via rotary joints.

[0014] Implementing the embodiments of this utility model will have the following beneficial effects:

[0015] The aforementioned hot rolling rolls for the production of medical hydrophilic nonwoven fabrics were adopted;

[0016] By forming a hot oil heating zone in the space between two partitions, the length of the hot oil heating zone can be flexibly adjusted according to the width of the nonwoven fabric during production, so that the heating zone is basically consistent with the width of the nonwoven fabric, thus avoiding the problem of local high temperature on the side of the nonwoven fabric.

[0017] Compared with existing hot press rollers that heat the entire fabric, this application reduces the heating area according to the width of the nonwoven fabric, avoiding additional heat loss and saving more energy;

[0018] Heat insulation rings and heat insulation plates can reduce heat loss from the outside of the roller, and the position of the heat insulation rings can be adjusted as needed, which can also further stabilize the temperature of the nonwoven fabric edge. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] in:

[0021] Figure 1 This is a schematic diagram of the structure of a hot rolling mill used in the production of medical hydrophilic nonwoven fabric in one embodiment;

[0022] Figure 2This is a schematic diagram of the structure of the partition plate in one embodiment;

[0023] Figure 3 This is a partially cut-away side view of the roller in one embodiment.

[0024] Reference numerals: 100, roller; 101, bearing; 102, rotating shaft; 103, handle screw; 200, heat insulation ring; 300, connecting pipe; 301, baffle; 302, rotary joint; 400, constant temperature hot oil tank; 401, hot oil pump; 402, first oil pipe; 403, second oil pipe; 500, heat insulation plate; 600, sealing plate; 601, sealing ring. Detailed Implementation

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0028] Example 1

[0029] Please see Figure 1-3A hot rolling roller for producing medical hydrophilic nonwoven fabric includes a hollow roller 100, with hollow rotating shafts 102 fixedly connected to both ends of the roller 100. A sealing plate 600 (made of high-temperature resistant ceramic, with a sealing ring 601 fixedly fitted on its circumference, made of high-temperature resistant perfluororubber) is slidably sealed at both ends of the roller 100. The space between the two sealing plates 600 forms a hot oil heating zone. A connecting pipe 300 is installed through the middle of the sealing plate 600, with one end of the connecting pipe 300 extending from the inside of the rotating shaft 102 to the outside of one end of the rotating shaft 102, and the connecting pipe 300 is confined inside the rotating shaft 102 by a limiting structure. Figure 1 As shown, it also includes a constant-temperature hot oil tank 400, with a hot oil pump 401 connected to one side of the constant-temperature hot oil tank 400. The outlet of the hot oil pump 401 is connected to one end of a connecting pipe 300 via a first oil pipe 402. Another connecting pipe 300 on a partition plate 600 is connected to one side of the constant-temperature hot oil tank 400 via a second oil pipe 403. Both the first oil pipe 402 and the second oil pipe 403 are configured as insulated oil pipes.

[0030] It should be noted that the constant temperature hot oil tank 400 is existing technology, employing an insulated oil tank equipped with a temperature controller, thermocouples, and electric heating elements. The electric heating elements heat the oil inside the insulated oil tank, while the thermocouples detect the temperature. The temperature controller, electrically connected to the thermocouples and electric heating elements, achieves temperature control. Depending on the materials and requirements during non-woven fabric production, the temperature range is controlled between 140 and 230℃.

[0031] The limiting structure includes multiple uniformly spaced baffles 301 fixedly sleeved on the connecting pipe 300 and a handle screw 103 threaded onto the rotating shaft 102. The lower end of the handle screw 103 can be locked between two baffles 301 to limit the position of the connecting pipe 300. By removing the handle screw 103, the position of the sealing plate 600 inside the roller 100 can be moved by manually pushing and pulling the connecting pipe 300, thereby adjusting the size of the hot oil heating zone.

[0032] In specific implementation, such as Figure 1 In this process, a high-temperature resistant heat-insulating ring 200 is slidably fitted onto the surface of the roller 100. The heat-insulating ring 200 is made of perfluororubber. Furthermore, as... Figure 3 The system also includes arc-shaped heat insulation plates 500, which are spaced above the roller 100 and fixedly connected to the hot rolling mill (not shown in the figure) via a connecting frame (not shown in the figure); the rotating shaft 102 is rotatably mounted on the hot rolling mill via bearing 101. The bearing 101 is a high-temperature resistant ceramic bearing or a metal bearing.

[0033] More specifically, at least two sets of heat insulation baffles 200 are provided, and the heat insulation baffles 200 located on the outside of the roller 100 are aligned with the sealing plate 600 located inside the roller 100. In specific implementation, the thickness of the heat insulation baffles 200 is less than or equal to the gap between the two rollers 100. Due to its elasticity, it will not affect the hot rolling production of nonwoven fabric; it can be flexibly adjusted; and it plays a partial role in heat insulation.

[0034] The other two oil pipes, the first oil pipe 402 and the second oil pipe 403, are rotatably connected to the connecting pipe 300 via rotary joints 302. Rotary joint 302 is existing technology; a rotary joint is a mechanical component used to connect rotating equipment to a fixed pipeline, enabling dynamic sealing and transmission of fluids (such as hydraulic oil, water, steam, etc.) during rotation. Existing rotary joints mainly include a housing, a sealed bearing, and a rotating shaft. The housing serves as a fixed support component of the rotary joint, connects to the external fixed pipeline, and bears fluid pressure and mechanical loads. The rotating shaft is coaxially connected to the rotating equipment and rotates synchronously with the equipment; it has an internal fluid passage. Further details are omitted here.

[0035] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A hot rolling roll for producing medical hydrophilic nonwoven fabric, characterized in that, include: A hollow roller (100) has hollow rotating shafts (102) fixedly connected to both ends of the roller (100). A sealing plate (600) is slidably sealed at both ends of the roller (100), and the space between the two sealing plates (600) forms a hot oil heating zone. A connecting pipe (300) is installed through the middle of the sealing plate (600). One end of the connecting pipe (300) passes through the inside of the rotating shaft (102) and extends to the outside of one end of the rotating shaft (102). The connecting pipe (300) is confined inside the rotating shaft (102) by a limiting structure. It also includes a constant temperature hot oil tank (400), one side of which is connected to a hot oil pump (401), the outlet of which is connected to one end of a connecting pipe (300) through a first oil pipe (402); the connecting pipe (300) on another partition plate (600) is connected to one side of the constant temperature hot oil tank (400) through a second oil pipe (403).

2. The hot rolling roll for producing medical hydrophilic nonwoven fabric according to claim 1, characterized in that: The limiting structure includes a plurality of uniform baffles (301) fixedly sleeved on the connecting pipe (300) and a handle screw (103) threaded on the rotating shaft (102). The lower end of the handle screw (103) can be locked between two baffles (301) to limit the position of the connecting pipe (300).

3. The hot rolling roll for producing medical hydrophilic nonwoven fabric according to claim 1, characterized in that: The surface of the roller (100) is slidably fitted with a high-temperature resistant heat insulation ring (200), which is made of perfluororubber.

4. The hot rolling roll for producing medical hydrophilic nonwoven fabric according to claim 3, characterized in that: It also includes an arc-shaped heat insulation plate (500), which is spaced above the roller (100) and is fixedly connected to the hot rolling mill by a connecting frame; the rotating shaft (102) is rotatably mounted on the hot rolling mill by a bearing (101).

5. A hot rolling roll for producing medical hydrophilic nonwoven fabric according to claim 3, characterized in that: At least two sets of the heat insulation baffles (200) are provided, and the heat insulation baffles (200) located on the outside of the roller (100) are aligned with the sealing plate (600) located inside the roller (100).

6. The hot rolling roll for producing medical hydrophilic nonwoven fabric according to claim 1, characterized in that: The partition plate (600) is made of high-temperature resistant ceramic, and a sealing ring (601) is fixedly fitted on the circumference of the partition plate (600). The sealing ring (601) is made of high-temperature resistant perfluororubber.

7. A hot rolling roll for producing medical hydrophilic nonwoven fabric according to claim 1, characterized in that: The first oil pipe (402) and the second oil pipe (403) are rotatably connected to the connecting pipe (300) through a rotary joint (302).

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