Non-woven fabric hot roller

Abstract

The utility model relates to the technical field of rollers, and particularly discloses a non-woven fabric hot roller which comprises a roller body and center shafts fixedly installed at the two ends of the roller body, the two sets of center shafts are provided with an oil inlet and an oil outlet respectively, the oil inlet and the oil outlet are communicated with the interior of the roller body, pressure relief pipes are arranged at the two ends of the roller body, and the pressure relief pipes are communicated with the interior of the roller body. A pressure relief valve is arranged on the pressure relief pipe, an oil collecting barrel is arranged at the end of the pressure relief pipe, an oil return pipe is arranged at the bottom of the oil collecting barrel, the end of the oil return pipe is communicated with the roller body, a miniature water pump is arranged on the oil return pipe, a pressure sensor is arranged in the roller body, a filter part is arranged on the oil return pipe, and a filter screen is arranged in the filter part. The non-woven fabric hot roll has the advantages that the non-woven fabric hot roll has pressure relief and oil return functions, equipment damage or production interruption caused by excessively high pressure of hot oil in the roll body can be effectively prevented, and the service life of the roll body can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of rolling rolls, and particularly relates to a hot rolling roll for non-woven fabrics. Background Art

[0002] Non-woven fabric, also known as non-woven cloth or non-woven fabric, is a new type of fiber product directly bonded by oriented or random fibers through physical methods. The hot rolling roll for non-woven fabrics is an important device in the production process of non-woven fabrics, mainly used to hot-roll the fiber layer of non-woven fabrics under the action of high temperature and pressure to form a uniform and dense cloth layer structure. This kind of roll is usually made of high-quality alloy steel, with high strength, high wear resistance and good thermal stability, to ensure that it can withstand high temperature and high pressure during hot rolling without easy wear, thus ensuring the production quality and efficiency of non-woven fabrics.

[0003] In the existing technology of hot rolling rolls for non-woven fabrics, when the hot oil pressure in the roll body is too high, it is easy to cause serious damage to the equipment, such as seal rupture, component deformation, etc., affecting the production efficiency and quality of non-woven fabrics, and even causing sudden interruption of production. Moreover, working under high pressure for a long time will greatly shorten the normal service life of the roll body and increase the maintenance and replacement costs of the equipment. Therefore, it is necessary to improve this situation, and for this reason, a hot rolling roll for non-woven fabrics is proposed. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a hot rolling roll for non-woven fabrics with a pressure relief and oil return function, which can effectively prevent equipment damage or production interruption caused by too high hot oil pressure in the roll body and extend the service life of the roll body.

[0005] To achieve the above object, the utility model adopts the following technical scheme: A hot rolling roll for non-woven fabrics includes a roll body and central shafts fixedly installed at both ends of the roll body. An oil inlet and an oil outlet are respectively opened on the two groups of central shafts. The oil inlet and the oil outlet are both communicated with the inside of the roll body. Pressure relief pipes are arranged at both ends of the roll body. A pressure relief valve is arranged on the pressure relief pipe. An oil collecting cylinder is arranged at the end of the pressure relief pipe. A return oil pipe is arranged at the bottom of the oil collecting cylinder. The end of the return oil pipe is communicated with the roll body, and a micro water pump is arranged on the return oil pipe. A pressure sensor is arranged inside the roll body.

[0006] Preferably, a filtering part is arranged on the return oil pipe, and a filter screen is arranged inside the filtering part.

[0007] Preferably, a cylinder is fixedly installed inside the roll body, and uniformly distributed oil passage one is opened on the outer wall of the cylinder.

[0008] Preferably, uniformly distributed oil passage two is opened on the cylinder, and the oil passage two is respectively located on one side of the oil passage one.

[0009] Preferably, the roller body is made of high-speed steel.

[0010] In summary, compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. Through the coordinated operation among the roller body, central shaft, oil inlet, oil outlet, pressure relief pipe, pressure relief valve, oil collecting cylinder, oil return pipe, micro water pump and pressure sensor in the present utility model, the non-woven fabric hot rolling roller can be equipped with the function of pressure relief and oil return, which can effectively prevent equipment damage or production interruption caused by excessive pressure of the hot oil in the roller body and extend the service life of the roller body.

[0012] 2. By setting the filtering part and filter screen in the present utility model, the hot oil can be filtered to improve the purity of the hot oil.

[0013] 3. Through the coordinated operation among the column body, oil passage one and oil passage two in the present utility model, the flow effect of the hot oil inside the roller body can be improved, and the situation of excessive hot oil pressure can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0015] Figure 2 is an end structure diagram of the roller body of the present utility model;

[0016] Figure 3 is a bottom view structure diagram of the end of the roller body of the present utility model;

[0017] Figure 4 is a side view sectional structure diagram of the roller body and the central shaft of the present utility model;

[0018] Figure 5 is a structure diagram of the column body of the present utility model;

[0019] Figure 6 is an end structure diagram of the column body of the present utility model;

[0020] Figure 7 is a sectional structure diagram of the filtering part of the present utility model.

[0021] LEGEND DESCRIPTION:

[0022] 1. Roller body; 2. Central shaft; 3. Oil inlet; 4. Oil outlet; 5. Pressure relief pipe; 6. Pressure relief valve; 7. Oil collecting cylinder; 8. Oil return pipe; 9. Micro water pump; 10. Pressure sensor; 11. Filtering part; 12. Filter screen; 13. Column body; 14. Oil passage one; 15. Oil passage two. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present utility model.

[0024] Please refer to Figures 1-6 , the present utility model provides a technical solution:

[0025] A non-woven fabric hot rolling roll, comprising a roll body 1 and central shafts 2 fixedly installed at both ends of the roll body 1. Oil inlets 3 and oil outlets 4 are respectively opened on the two groups of central shafts 2. Both the oil inlets 3 and the oil outlets 4 are communicated with the inside of the roll body 1. Pressure relief pipes 5 are arranged at both ends of the roll body 1. A pressure relief valve 6 is arranged on the pressure relief pipes 5. An oil collecting cylinder 7 is arranged at the end of the pressure relief pipes 5. A return oil pipe 8 is arranged at the bottom of the oil collecting cylinder 7. The end of the return oil pipe 8 is communicated with the roll body 1, and a micro water pump 9 is arranged on the return oil pipe 8. A pressure sensor 10 is arranged inside the roll body 1.

[0026] During the non-woven fabric hot rolling process, hot oil is continuously injected into the inside of the roll body 1 through the oil inlets 3 on the central shafts 2 for heating and lubrication, and the hot oil is continuously discharged from the oil outlets 4 on the central shafts 2. As the production continues, the hot oil inside the roll body 1 may cause the internal pressure to gradually increase due to thermal expansion or an increase in the injection amount. At this time, the pressure sensor 10 arranged inside the roll body 1 monitors the pressure change in real time. Once it detects that the pressure exceeds the preset safety threshold, a signal is triggered to the pressure relief valve 6, and the pressure relief valve 6 responds quickly, opening the channel of the pressure relief pipe 5, so that the high-pressure hot oil inside the roll body 1 flows through the pressure relief pipe 5 to the oil collecting cylinder 7. After the oil collecting cylinder 7 collects this hot oil, under the action of the micro water pump 9, the hot oil is pumped back into the inside of the roll body 1 when needed. This non-woven fabric hot rolling roll has the function of pressure relief and oil return, and can effectively prevent equipment damage or production interruption caused by excessive pressure of the hot oil inside the roll body 1, and prolong the service life of the roll body 1.

[0027] A filtering part 11 is arranged on the return oil pipe 8, and a filter screen 12 is arranged inside the filtering part 11;

[0028] During the process of the hot oil flowing back to the roll body 1 through the return oil pipe 8, the filtering part 11 is internally equipped with a fine filter screen 12, which can intercept and remove impurities, particulate matters, etc. in the hot oil, ensuring that the hot oil flowing back to the roll body 1 has a high purity. It not only protects the oil circuit system inside the roll body 1 from being invaded by impurities, but also improves the heat conduction efficiency of the hot oil, further ensuring the stability of the non-woven fabric hot rolling process and the product quality.

[0029] A cylinder 13 is fixedly installed inside the roller body 1. An evenly distributed first oil passage 14 is provided on the outer wall of the cylinder 13, and an evenly distributed second oil passage 15 is provided on the cylinder 13. The second oil passages 15 are respectively located on the sides of the first oil passages 14.

[0030] To optimize the circulation effect of the hot oil inside the roller body 1, a cylinder 13 is fixedly installed inside the roller body 1. The first oil passages 14 and the second oil passages 15 are evenly distributed on the outer wall and the surface of the cylinder 13. When the hot oil enters the roller body 1 through the oil inlet 3, it enters multiple groups of the first oil passages 14 and the second oil passages 15 respectively, increasing the contact area between the hot oil and the inner wall of the roller body 1, improving the heat exchange efficiency, and effectively reducing the risk of excessive pressure caused by local accumulation of the hot oil.

[0031] The roller body 1 is made of high-speed steel.

[0032] The roller body 1 is made of high-speed steel. The high strength, high wear resistance and excellent thermal stability of high-speed steel are required during the hot rolling process of non-woven fabrics. The roller body 1 needs to withstand harsh working conditions such as high temperature, high pressure and frequent friction. The high-speed steel material is designed for these requirements. Its high-strength characteristic ensures that the roller body 1 is not easily deformed or damaged during long-term operation. The high wear resistance extends the service life of the roller body 1 and reduces the replacement frequency. The excellent thermal stability ensures that the roller body 1 can still maintain stable dimensional accuracy and mechanical properties in a high-temperature environment, providing a solid guarantee for the high-quality hot rolling of non-woven fabrics.

[0033] Working principle:

[0034] During the hot rolling process of non-woven fabrics, hot oil is continuously injected into the roller body 1 through the oil inlet 3 on the central shaft 2 for heating and lubrication, and the hot oil is continuously discharged through the oil outlet 4 on the central shaft 2. As the production continues, the internal pressure of the hot oil in the roller body 1 may gradually increase due to thermal expansion or increased injection volume. At this time, the pressure sensor 10 installed inside the roller body 1 monitors the pressure change in real time. Once the detected pressure exceeds the preset safety threshold, a signal is triggered to the pressure relief valve 6. The pressure relief valve 6 responds quickly and opens the passage of the pressure relief pipe 5, so that the high-pressure hot oil in the roller body 1 flows through the pressure relief pipe 5 to the oil collecting cylinder 7. After the oil collecting cylinder 7 collects this hot oil, under the action of the micro water pump 9, the hot oil is pumped back into the roller body 1 when needed.

[0035] During the process of the hot oil flowing back to the roller body 1 through the oil return pipe 8, a fine filter screen 12 is installed inside the filtering part 11, which can intercept and remove impurities, particulate matters, etc. in the hot oil, ensuring that the hot oil flowing back to the roller body 1 has a high purity. This not only protects the oil circuit system inside the roller body 1 from being invaded by impurities, but also improves the heat conduction efficiency of the hot oil, further ensuring the stability of the non-woven fabric hot rolling process and the product quality.

[0036] To optimize the circulation effect of the hot oil inside the roller body 1, a cylinder 13 is fixedly installed inside the roller body 1. Oil passage one 14 and oil passage two 15 are evenly distributed on the outer wall and surface of the cylinder 13. When the hot oil enters the roller body 1 through the oil inlet 3, it enters multiple groups of oil passage one 14 and oil passage two 15 respectively, increasing the contact area between the hot oil and the inner wall of the roller body 1, improving the heat exchange efficiency, and effectively reducing the risk of excessive pressure caused by local accumulation of the hot oil;

[0037] The roller body 1 is made of high-speed steel. The high strength, high wear resistance and excellent thermal stability of high-speed steel are required during the hot rolling process of non-woven fabrics. The roller body 1 needs to withstand harsh working conditions such as high temperature, high pressure and frequent friction. The high-speed steel material is designed for these requirements. Its high-strength characteristic ensures that the roller body 1 is not easily deformed or damaged during long-term operation. The high wear resistance extends the service life of the roller body 1 and reduces the replacement frequency. The excellent thermal stability ensures that the roller body 1 can still maintain stable dimensional accuracy and mechanical properties in a high-temperature environment, providing a solid guarantee for the high-quality hot rolling of non-woven fabrics;

[0038] This non-woven fabric hot rolling roller has the function of pressure relief and oil return, which can effectively prevent equipment damage or production interruption caused by excessive pressure of the hot oil inside the roller body 1 and extend the service life of the roller body 1.

[0039] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A non-woven fabric hot rolling roll, comprising a roll body (1) and central shafts (2) fixedly installed at both ends of the roll body (1), characterized in that, An oil inlet (3) and an oil outlet (4) are respectively formed on two groups of the central shafts (2). The oil inlet (3) and the oil outlet (4) are both communicated with the inside of the roller body (1). Pressure relief pipes (5) are arranged at both ends of the roller body (1). A pressure relief valve (6) is arranged on the pressure relief pipes (5). An oil collecting cylinder (7) is arranged at the end of the pressure relief pipe (5). A return oil pipe (8) is arranged at the bottom of the oil collecting cylinder (7). The end of the return oil pipe (8) is communicated with the roller body (1), and a micro water pump (9) is arranged on the return oil pipe (8). A pressure sensor (10) is arranged inside the roller body (1).

2. The non-woven fabric hot rolling roll according to claim 1, characterized in that, A filtering part (11) is arranged on the return oil pipe (8), and a filter screen (12) is arranged inside the filtering part (11).

3. A non-woven fabric hot rolling roll according to claim 1, characterized in that, A column body (13) is fixedly installed inside the roller body (1), and uniformly distributed oil through channels one (14) are formed on the outer wall of the column body (13).

4. A non-woven fabric hot rolling roll according to claim 3, characterized in that, Uniformly distributed oil through channels two (15) are formed on the column body (13), and the oil through channels two (15) are respectively located on the sides of the oil through channels one (14).

5. A non-woven fabric hot rolling roll according to claim 1, characterized in that, The roller body (1) is made of high-speed steel material.

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