Nonwoven hot calender roll

Abstract

The utility model relates to the technical field of roll, especially to a non - woven fabric hot roll. Including roll cylinder, the both ends of roll cylinder are provided with end cap, the outside of end cap is provided with axle cylinder, still include two conductive disc and the both sides of two conductive disc are provided with the connecting rod of insulating with both, the outside of conductive disc is provided with the center axle that passes through after from axle cylinder outwardly, the center axle is rotatably connected with conductive disc and insulates between both, and the both sides of two conductive disc are provided with PTC cylinder. The utility model does not need constant temperature hot oil circulation equipment.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill technology, and in particular to a nonwoven hot rolling mill roll. Background Technology

[0002] Nonwoven fabric hot rolling equipment is mainly used to hot roll the fiber layer of nonwoven fabric under high temperature and pressure. Nonwoven fabric hot rolling roll is an important component of nonwoven fabric hot rolling equipment. Patent application number 202421976346.0 discloses a nonwoven fabric hot rolling roller, including a roller body and central shafts fixedly installed at both ends of the roller body. Two sets of central shafts are respectively provided with oil inlets and outlets, both of which are connected to the interior of the roller body. Pressure relief pipes are provided at both ends of the roller body, each equipped with a pressure relief valve. An oil collecting cylinder is provided at the end of the pressure relief pipe, and a return oil pipe is provided at the bottom of the oil collecting cylinder. The end of the return oil pipe is connected to the roller body, and a miniature water pump is installed on the return oil pipe. A pressure sensor is installed inside the roller body, and a filter section is provided on the return oil pipe, containing a filter screen. A column is fixedly installed inside the roller body, and the outer wall of the column has uniformly distributed oil passages. When hot oil flows through the interior of the roller body, the roller body is heated. However, using hot oil to heat the roller body requires a matching constant-temperature hot oil circulation device, increasing the floor space required. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a nonwoven fabric hot rolling roll in response to the above-mentioned technical deficiencies.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a non-woven fabric hot rolling roller, including a roller, end caps at both ends of the roller, a shaft cylinder on the outside of the end caps, and two conductive discs with a connecting rod insulated from both of them between the two conductive discs. A central shaft is provided on the outside of the conductive discs, passing through the shaft cylinder and extending outward. The central shaft is rotatably connected to the conductive discs and insulated from them. A PTC cylinder is provided between the two conductive discs.

[0005] To further optimize this technical solution, a silicon nitride bearing is provided between the central shaft and the conductive disk.

[0006] To further optimize this technical solution, an insulating support cylinder is also provided between the two conductive disks, and the PTC cylinder is sleeved on the outside of the support cylinder.

[0007] To further optimize this technical solution, an insulating layer is also provided on the outside of the central shaft.

[0008] To further optimize this technical solution, a bayonet is provided on the part of the central shaft exposed outside the shaft cylinder.

[0009] Compared with the prior art, the present invention has the following advantages: end caps are provided at both ends of the roller, a connecting rod insulated from both is provided between the two conductive discs, a PTC cylinder that can play a heating role is also provided between the two conductive discs, and a central shaft that passes through the shaft cylinder on the end cap and extends outward is provided on the outside of the conductive disc. The central shaft is rotatably connected to the conductive disc and the two are insulated from each other. The hot rolling roller does not require a constant temperature hot oil circulation device, so no additional floor space is required due to the existence of the constant temperature hot oil circulation device. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a nonwoven fabric hot rolling roll.

[0011] In the diagram: 1. Roller; 11. End cap; 111. Shaft cylinder; 2. Bearing; 3. Conductive disk; 31. Central shaft; 32. Insulation layer; 4. Connecting rod; 5. Support cylinder; 6. PTC cylinder. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0013] Detailed implementation method: combined with Figure 1As shown, a nonwoven fabric hot rolling roller includes a roller 1, with end caps 11 at both ends of the roller 1. A shaft cylinder 111 is provided on the outer side of the end caps 11, and an inner hole on the shaft cylinder 111 penetrates the end caps 11. It also includes two conductive discs 3, with a connecting rod 4 insulated from both of the two conductive discs 3 between them. Preferably, the connecting rod 4 is made of insulating material, but an insulating gasket can also be provided between the connecting rod 4 and the conductive discs 3. A central shaft 31 is provided on the outer side of the conductive discs 3, which passes through the shaft cylinder 111 and extends outward. The central shaft 31 is a conductor, and the central shaft 31 is rotatably connected to the conductive discs 3 and insulated from them. A PTC cylinder 6 is provided between the two conductive discs 3. The PTC cylinder 6 is made of positive temperature coefficient thermistor material. When it reaches its own Curie temperature, the temperature no longer rises. When the temperature is lower than its own Curie temperature, it will automatically heat up, thereby automatically maintaining the temperature at around its own Curie temperature. Due to the presence of the connecting rod 4, the two conductive discs 3 will not rotate relative to the connecting rod 4 and thus will not damage the PTC cylinder 6. The PTC cylinder 6 does not contact the roller 1. In use, the hot rolling roller of this application is installed on a nonwoven fabric hot rolling device. The hot rolling roller can rotate relative to the nonwoven fabric hot rolling device. The central shaft 31 is fixed by an insulated bracket (another component, not part of this application) so that it does not rotate. One central shaft 31 is connected to the live wire, and the other central shaft 31 is connected to the neutral wire, thereby enabling the PTC cylinder 6 to heat the roller 1 and maintain it at the required temperature. Since a constant temperature hot oil circulation device is not required, no additional floor space is needed due to the presence of a constant temperature hot oil circulation device.

[0014] Furthermore, a silicon nitride bearing 2 is provided between the central shaft 31 and the conductive disk 3. The diameter of the central shaft 31 is smaller than the inner diameter of the shaft cylinder 111, so the two do not contact each other. The silicon nitride bearing 2 is non-conductive, thereby insulating the central shaft 31 from the conductive disk 3.

[0015] Furthermore, an insulating support cylinder 5 is provided between the two conductive disks 3. The PTC cylinder 6 is sleeved on the outside of the support cylinder 5, and the support cylinder 5 can provide support to prevent the PTC cylinder 6 from being damaged.

[0016] Furthermore, an insulating layer 32 is provided on the outside of the central shaft 31, which improves the reliability of the insulation between the central shaft 31 and the shaft cylinder 111.

[0017] Furthermore, the portion of the central shaft 31 exposed outside the shaft cylinder 111 is also provided with a bayonet, which facilitates being held in place by an insulated bracket to prevent rotation.

[0018] The specific embodiments described above do not constitute a limitation of this utility model. Any modifications, equivalent substitutions, or improvements made to the above embodiments should be included within the protection scope of this utility model.

Claims

1. A nonwoven fabric hot rolling roll, comprising a roller (1), wherein end caps (11) are provided at both ends of the roller (1), and a shaft cylinder (111) is provided on the outer side of the end caps (11), characterized in that: It also includes two conductive disks (3) and a connecting rod (4) insulated from both of the two conductive disks (3) is provided between them. A central shaft (31) is provided on the outside of the conductive disk (3) after passing through the shaft cylinder (111) and extending outward. The central shaft (31) is rotatably connected to the conductive disk (3) and insulated from both of them. A PTC cylinder (6) is provided between the two conductive disks (3).

2. The nonwoven fabric hot rolling roll according to claim 1, characterized in that: A silicon nitride bearing (2) is provided between the central shaft (31) and the conductive disk (3).

3. The nonwoven fabric hot rolling roll according to claim 1, characterized in that: An insulating support cylinder (5) is also provided between the two conductive disks (3), and the PTC cylinder (6) is sleeved on the outside of the support cylinder (5).

4. The nonwoven fabric hot rolling roll according to claim 1, characterized in that: An insulating layer (32) is also provided on the outside of the central shaft (31).

5. A nonwoven fabric hot rolling roll according to any one of claims 1-4, characterized in that: The portion of the central shaft (31) exposed outside the shaft cylinder (111) is also provided with a bayonet.

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