A nonwoven fabric hot rolling system with uniform temperature control

Abstract

The utility model discloses a non - woven fabric hot rolling system of temperature control even, including hot rolling roller, the inside of hot rolling roller is fixed with sealed baffle in the position of two ends close, and the fixed with central tube between two sealed baffle, the oil inlet pipe is connected with 90 degree elbow pipe in the inside central of central tube and extends to the corresponding sealed end plate and sealed baffle and is connected, and the inner wall of central tube is provided with the shunt plate in the position of 90 degree elbow pipe, and the oil outlet pipe is connected with the inner chamber of hot rolling roller and communicates through the corresponding sealed end plate. The utility model discloses through oil inlet pipe directly to the inside central position of hot rolling roller with heat -conducting oil, and the inside of hot rolling roller is transported from the central tube and multilayer sleeve from inside to outside layer by layer, and heat -conducting oil reaches each layer temperature same, and sets up sealed baffle and sealed fender simultaneously, ensures that heat -conducting oil is exported from the inner chamber of hot rolling roller two ends simultaneously, and heat -conducting oil completely fills up the inner chamber of hot rolling roller, and fully guarantees the evenness of the temperature of each place on the surface of hot rolling roller.

Description

Technical Field

[0001] This utility model relates to the field of hot-rolled nonwoven fabric technology, specifically a nonwoven fabric hot-rolling system with uniform temperature control. Background Technology

[0002] The hot rolling process for nonwoven fabrics is an important web-forming technology. In the production of spunbond polypropylene nonwoven fabric (PP), polyester nonwoven fabric (PET), and PA nylon (PA), sheet fibers enter the hot rolling mill and are hot-pressed into a web by the temperature and pressure of the upper and lower hot rolling rolls or hot rolling rolls and idler rolls. This process has the characteristics of high production efficiency and suitability for large-scale industrial production.

[0003] Currently, hot rolling rolls on the market mainly achieve hot rolling through resistance heating and thermal oil heating. Uniform temperature control of the hot rolling roll ensures the surface smoothness of nonwoven fabric products, directly affecting their quality. Currently, regardless of whether the hot rolling roll uses resistance heating or thermal oil heating, the conduit layout is similar: it either extends directly from one end of the roll to the other or is spirally wound to extend to the other end.

[0004] Heating with heat transfer oil causes it to cool down as it flows, resulting in a higher temperature at the heat transfer oil input end of the hot roll compared to the output end. While resistance heating maintains a uniform temperature throughout, it also has drawbacks: the temperature distribution on the hot roll surface cannot be guaranteed to be uniform, and the temperature at the location of the heating cable is higher than the temperature in the area between adjacent heating cables. Therefore, the temperature uniformity of currently available hot rolls is insufficient. To improve the quality of nonwoven fabrics, a new type of hot roll with more uniform temperature control must be designed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a nonwoven fabric hot rolling system with uniform temperature control, which solves the problem of insufficient temperature control in current hot rolling rolls on the market.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A nonwoven fabric hot rolling system with uniform temperature control includes a hot rolling roller, sealing end plates fixed at both ends of the hot rolling roller, shaft tubes fixed on the sealing end plates, oil inlet pipes and oil outlet pipes respectively disposed inside the two shaft tubes, and rotary joints installed at the ends of the oil inlet pipes and oil outlet pipes. A sealing baffle is vertically fixed inside the hot rolling roller near both ends, and a central tube is fixed between the two sealing baffles.

[0008] The oil inlet pipe passes through the corresponding sealing end plate and sealing baffle and extends to the center of the central pipe and connects with the 90-degree bend. A diversion plate is provided on the inner wall of the central pipe at the position corresponding to the 90-degree bend. The oil outlet pipe passes through the corresponding sealing end plate and connects with the inner cavity of the hot rolling roll.

[0009] The surface of the central tube is covered with multiple layers of sleeves, and through holes are provided on the walls of both the sleeves and the central tube. Sealing rings located on the vertical plane of the hot rolling roll are fixed between the central tube and the adjacent sleeves, between two adjacent layers of sleeves, and between the hot rolling roll and the adjacent sleeves. The two ends of the sleeves are fixedly connected to the sealing baffles on both sides.

[0010] A connecting pipe located outside the sleeve and penetrating the corresponding sealing ring is connected between the two sealing baffles. The two ends of the connecting pipe are respectively connected to the inner cavity of the hot rolling roll on the side of the sealing baffle away from the sleeve, and the sealing baffle is also provided with a perforation located outside the sleeve.

[0011] Preferably, the surface of the hot-rolled roller is provided with an embossed pattern at the position between the two sealing baffles.

[0012] Preferably, the oil inlet pipe, oil outlet pipe, central pipe, and sleeve are all coaxially arranged with the hot rolling roll.

[0013] Preferably, the diverter plate is a wedge-shaped plate that is symmetrical from left to right.

[0014] Preferably, the sleeve has at least three layers, and the spacing between adjacent layers and between the central tube and adjacent sleeves is equal.

[0015] Preferably, the through holes on the central tube and the sleeve are equidistant along the axial direction, and the through holes on the central tube and the sleeve are respectively located above and below the corresponding tube wall or on the front and back sides, and the through holes on two adjacent sleeves or the through holes on the central tube and the adjacent sleeve are respectively located in mutually perpendicular directions.

[0016] Preferably, the through holes on the central tube are located on the front and back walls of the 90-degree bend and the diverter plate.

[0017] Preferably, the number of the connecting pipes is equal to the number of perforations on one side of the sealing baffle, and the perforations and connecting pipes are equidistantly arranged circumferentially on the sealing baffle.

[0018] Preferably, a bracket is fixed between the surface of the oil inlet pipe near the 90-degree bend and the inner wall of the central pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention delivers heat transfer oil directly to the center of the hot rolling roller via an oil inlet pipe. Inside the hot rolling roller, the oil is delivered layer by layer from the center pipe and multiple sleeves outwards. The temperature of the heat transfer oil is the same at each layer. Simultaneously, sealing baffles and sealing rings are installed to ensure that the heat transfer oil is output simultaneously from both ends of the hot rolling roller cavity and completely fills the cavity. This fully guarantees the uniformity of temperature across the surface of the hot rolling roller, improves the surface smoothness of nonwoven fabric products, enhances the quality of nonwoven fabric products, and solves the problem of uneven temperature control in current hot rolling rollers on the market. Attached Figure Description

[0021] Figure 1 This is a front view of the present utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0023] Figure 3 This is a side sectional view of the corresponding position of the 90-degree bend in the pipe of this utility model;

[0024] Figure 4 This is a side view of the bracket of this utility model.

[0025] In the diagram: 1. Hot rolling roll; 2. Sealing end plate; 3. Shaft tube; 4. Oil inlet pipe; 5. Oil outlet pipe; 6. Rotary joint; 7. Sealing baffle; 8. Center tube; 9. Sleeve; 10. 90-degree bend; 11. Diverter plate; 12. Through hole; 13. Sealing ring; 14. Connecting pipe; 15. Perforation; 16. Embossing; 17. Support. Detailed Implementation

[0026] 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.

[0027] like Figure 1-4 As shown, this utility model provides a technical solution: a non-woven fabric hot rolling system with uniform temperature control, including a hot rolling roller 1, sealing end plates 2 fixed at both ends of the hot rolling roller 1, shaft tubes 3 fixed on the sealing end plates 2, oil inlet pipes 4 and oil outlet pipes 5 respectively disposed inside the two shaft tubes 3, and rotary joints 6 installed at the ends of the oil inlet pipes 4 and oil outlet pipes 5. The surface of the hot rolling roller 1 is provided with embossed patterns 16 at the position between the two sealing baffles 7.

[0028] A sealing baffle 7 is vertically fixed at the two ends of the hot rolling roll 1. A central tube 8 is fixed between the two sealing baffles 7. The oil inlet pipe 4 passes through the corresponding sealing end plate 2 and the sealing baffle 7 and extends to the center of the central tube 8 and connects with the 90-degree bend pipe 10. A bracket 17 is fixed between the surface of the oil inlet pipe 4 near the 90-degree bend pipe 10 and the inner wall of the central tube 8. A diversion plate 11 is set on the inner wall of the central tube 8 at the position corresponding to the 90-degree bend pipe 10. The diversion plate 11 is a wedge-shaped plate that is symmetrical on the left and right. The oil outlet pipe 5 passes through the corresponding sealing end plate 2 and connects with the inner cavity of the hot rolling roll 1.

[0029] The surface of the central tube 8 is covered with multiple layers of sleeves 9, which are stacked one after another. There are at least three layers of sleeves 9, and the spacing between two adjacent layers and between the central tube 8 and the adjacent sleeves 9 is equal. The oil inlet pipe 4, the oil outlet pipe 5, the central tube 8 and the sleeves 9 are all coaxially arranged with the hot rolling roll 1.

[0030] Both the sleeve 9 and the central tube 8 are provided with through holes 12. The through holes 12 on the central tube 8 and the sleeve 9 are equidistant along the axial direction. The through holes 12 on the central tube 8 and the sleeve 9 are respectively located above and below the corresponding tube wall or on the front and back. The through holes 12 on two adjacent sleeves 9 or the through holes 12 on the central tube 8 and the adjacent sleeve 9 are respectively located in mutually perpendicular directions. The through holes 12 on the central tube 8 are located on the front and back tube walls of the 90-degree bend 10 and the diverter plate 11.

[0031] A sealing ring 13 located on the vertical surface of the hot rolling roll 1 is fixed between the central tube 8 and the adjacent sleeve 9, between two adjacent layers of sleeve 9, and between the hot rolling roll 1 and the adjacent sleeve 9. The two ends of the sleeve 9 are fixedly connected to the sealing baffles 7 on both sides respectively.

[0032] A connecting pipe 14 located outside the sleeve 9 and passing through the corresponding sealing ring 13 is connected between the two sealing baffles 7. The two ends of the connecting pipe 14 are respectively connected to the inner cavity of the hot rolling roll 1 on the side of the sealing baffle 7 away from the sleeve 9. The sealing baffle 7 is also provided with a perforation 15 located outside the sleeve 9. The number of connecting pipes 14 is equal to the number of perforations 15 on one side of the sealing baffle 7. The perforations 15 and the connecting pipes 14 are respectively arranged equidistantly along the circumference on the sealing baffle 7.

[0033] Working principle:

[0034] The heat transfer oil heated by the heating equipment is directly transported to the center of the central tube 8 through the oil inlet pipe 4. It is then vertically input into the central tube 8 through a 90° bend and split to both sides under the action of the diverter plate 11. The heat transfer oil is transported outward layer by layer in the central tube 8 and the multi-layer sleeve 9. The corresponding through holes 12 on the central tube 8 and the sleeve 9 are set in a vertical position, so that the heat transfer oil is transported at a uniform speed from the inside to the outside in the hot rolling roll 1, ensuring that the temperature of the heat transfer oil is the same when it reaches each layer. The design of the sealing baffle 7 and the sealing ring 13 ensures that the heat transfer oil is evenly divided into two parts, left and right, in the hot rolling roll 1. It flows from the perforation 15 to the two ends of the inner cavity of the hot rolling roll 1 and is directly or indirectly transported to the oil outlet pipe 5 for output through the connecting pipe 14. This ensures that the heat transfer oil is output from both ends of the inner cavity of the hot rolling roll 1 at the same time, and that the heat transfer oil completely fills the inner cavity of the hot rolling roll 1, thus fully ensuring the uniformity of temperature on all parts of the surface of the hot rolling roll 1.

[0035] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] 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. A temperature-controlled and uniformly temperature-controlled nonwoven fabric hot rolling system, comprising a hot rolling roller (1), sealing end plates (2) fixed at both ends of the hot rolling roller (1), shaft tubes (3) fixed on the sealing end plates (2), an oil inlet pipe (4) and an oil outlet pipe (5) respectively disposed inside the two shaft tubes (3), and a rotary joint (6) installed at the ends of the oil inlet pipe (4) and the oil outlet pipe (5), characterized in that: The hot rolling roll (1) is vertically fixed with sealing baffles (7) near both ends inside, and a central tube (8) is fixed between the two sealing baffles (7). The oil inlet pipe (4) passes through the corresponding sealing end plate (2) and sealing baffle (7) and extends to the center of the inner part of the central pipe (8) and is connected to the 90-degree bend pipe (10). A diversion plate (11) is provided on the inner wall of the central pipe (8) at the position corresponding to the 90-degree bend pipe (10). The oil outlet pipe (5) passes through the corresponding sealing end plate (2) and is connected to the inner cavity of the hot rolling roll (1). The surface of the central tube (8) is covered with multiple layers of sleeves (9) that are layered one after another. Both the sleeves (9) and the central tube (8) have through holes (12). The central tube (8) and the adjacent sleeves (9), the two adjacent layers of sleeves (9) and the hot rolling roll (1) and the adjacent sleeves (9) are all fixed with sealing rings (13) located on the vertical surface of the hot rolling roll (1). The two ends of the sleeves (9) are respectively fixedly connected to the sealing baffles (7) on both sides. A connecting pipe (14) located outside the sleeve (9) and passing through the corresponding sealing ring (13) is connected between the two sealing baffles (7). The two ends of the connecting pipe (14) are respectively connected to the inner cavity of the hot rolling roll (1) on the side of the sealing baffle (7) away from the sleeve (9), and the sealing baffle (7) is also provided with a perforation (15) located outside the sleeve (9).

2. The nonwoven fabric hot rolling system with uniform temperature control according to claim 1, characterized in that: The surface of the hot-rolled roll (1) is provided with an embossed pattern (16) at the position between the two sealing baffles (7).

3. The nonwoven fabric hot rolling system with uniform temperature control according to claim 1, characterized in that: The oil inlet pipe (4), oil outlet pipe (5), central pipe (8) and sleeve (9) are all coaxially arranged with the hot rolling roll (1).

4. The nonwoven fabric hot rolling system with uniform temperature control according to claim 1, characterized in that: The diverter plate (11) is a wedge-shaped plate that is symmetrical from left to right.

5. The nonwoven fabric hot rolling system with uniform temperature control according to claim 1, characterized in that: The sleeve (9) has at least three layers, and the spacing between adjacent layers and between the central tube (8) and the adjacent sleeve (9) is equal.

6. The nonwoven fabric hot rolling system with uniform temperature control according to claim 1, characterized in that: The through holes (12) on the central tube (8) and the sleeve (9) are equidistant along the axial direction, and the through holes (12) on the central tube (8) and the sleeve (9) are respectively located above and below the corresponding tube wall or on the front and back. The through holes (12) on two adjacent sleeves (9) or the through holes (12) on the central tube (8) and the adjacent sleeve (9) are respectively located in mutually perpendicular directions.

7. The nonwoven fabric hot rolling system with uniform temperature control according to claim 1, characterized in that: The through hole (12) on the central tube (8) is located on the front and back walls of the 90-degree bend (10) and the diverter plate (11).

8. The nonwoven fabric hot rolling system with uniform temperature control according to claim 1, characterized in that: The number of the connecting pipes (14) is equal to the number of the perforations (15) on one side of the sealing baffle (7), and the perforations (15) and the connecting pipes (14) are respectively arranged equidistantly along the circumference on the sealing baffle (7).

9. The nonwoven fabric hot rolling system with uniform temperature control according to claim 1, characterized in that: A bracket (17) is fixed between the surface of the oil inlet pipe (4) near the 90-degree bend (10) and the inner wall of the central pipe (8).

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