阅读说明：本技术 导热油烘缸结构 (Heat-conducting oil dryer structure ) 是由 程洪玉 沈栋 于 2021-01-27 设计创作，主要内容包括：本发明设计的一种导热油烘缸结构,包括缸体、设置在缸体轴端的进出油口、设置在缸体的端面的人口,所述的缸体内圆周均布有分隔油腔,所述的分隔油腔宽度与缸体烘干面的横幅宽度一致,且至少包含一个能将导热油沿烘缸旋转方向运输到烘缸最上端的运输腔体。这种结构的特点是利用运输腔体,将导热油运输到缸体的顶端,从而保证烘干面的温度。而烘缸每旋转一周,分隔油腔内的导热油就更换一次,保证导热油的传输效率。(The invention discloses a heat conduction oil drying cylinder structure which comprises a cylinder body, an oil inlet and outlet arranged at the shaft end of the cylinder body and an inlet arranged at the end face of the cylinder body, wherein separation oil cavities are uniformly distributed on the inner circumference of the cylinder body, the width of each separation oil cavity is consistent with the width of the cross section of the drying surface of the cylinder body, and the heat conduction oil drying cylinder structure at least comprises a conveying cavity capable of conveying heat conduction oil to the uppermost end of a drying cylinder along the rotating direction of the drying cylinder. The structure is characterized in that the heat conducting oil is transported to the top end of the cylinder body by utilizing the transporting cavity, so that the temperature of the drying surface is ensured. And every time the drying cylinder rotates for a circle, the heat conduction oil in the oil separation cavity is replaced once, so that the transmission efficiency of the heat conduction oil is ensured.)

1. A heat transfer oil drying cylinder structure comprises a cylinder body, an oil inlet and an oil outlet arranged at the shaft end of the cylinder body, and an inlet arranged at the end face of the cylinder body, and is characterized in that separation oil cavities are uniformly distributed on the inner circumference of the cylinder body, the width of each separation oil cavity is consistent with the width of a cross beam of a drying surface of the cylinder body, and at least one transportation cavity capable of transporting heat transfer oil to the uppermost end of the drying cylinder along the rotation direction of the drying cylinder is arranged.

2. A conduction oil dryer structure as claimed in claim 1, wherein said transport cavity includes a circular arc plate at each point equidistant from the cylinder drying surface, and a sealing plate connecting the circular arc plate and the inner wall of the cylinder drying surface.

3. A heat transfer oil dryer structure as claimed in claim 2, wherein said circular arc plate is provided with apertures for the flow of heat transfer oil therethrough.

4. A heat transfer oil drying cylinder structure as claimed in claim 1, wherein a cylinder body sealing plate is provided in the cylinder body to divide the cylinder body equally, and a stirring piece is provided on the oil separating chamber.

5. A heat transfer oil dryer structure as claimed in claim 4, wherein said cylinder cover plate is provided with a gap for the heat transfer oil to pass through.

6. A conduction oil dryer structure as claimed in any one of claims 1-5, characterized in that said transport chamber is of uniform or convergent cross-section.

7. A conduction oil dryer structure as claimed in claim 6, characterized in that at least half of the cylinders of conduction oil are located in said cylinder, and the level of conduction oil is submerged in the oil outlet.

Technical Field

The invention relates to paper production equipment, in particular to a heat-conducting oil drying cylinder structure suitable for production in the field of medium-low speed and narrow special paper.

Background

At present, the heat conduction oil drying cylinder structure for domestic papermaking mainly comprises two structural forms of a jacket drying cylinder and a common half-cylinder oil drying cylinder, wherein the jacket drying cylinder is suitable for wide and medium-high speed paper machines, and is particularly used for ultra-high-temperature sizing equipment. The cylinder surface temperature is generally higher than that of a common steam drying cylinder. The jacket drying cylinder has a flow channel serpentine coil structure, and the cylinder surface temperature difference is generally about 10-20 ℃. And the paper sheet has low moisture during setting and low heat required by the paper sheet. And is insensitive to temperature difference of more than 10 degrees under the condition of high temperature. Jacket drying cylinders on heat-setting equipment are widely used. The common half-cylinder oil drying cylinder is generally suitable for shaping equipment with medium and low speed, and generally needs to be matched with electromagnetic heating for use, so that the requirement on heat transfer inside the drying cylinder is not high. The heat conducting oil drying cylinder structure developed and designed at this time is specially designed in consideration of high requirements of special paper types on the accuracy of the horizontal width temperature difference, and the process requires that the cylinder surface temperature difference is within +/-2 ℃. The phenomenon that the prior electromagnetic heating drying cylinder has large cylinder surface breadth temperature difference and inconsistent heated shrinkage of paper sheets is replaced. Solves the paper defect caused by uneven heating of the drying cylinder. The yield and the product quality are improved.

Disclosure of Invention

In order to solve the problems, the invention provides a heat-conducting oil drying cylinder structure with the cylinder surface temperature difference within +/-2 ℃.

In order to achieve the purpose, the heat conduction oil drying cylinder structure comprises a cylinder body, an oil inlet and an oil outlet arranged at the shaft end of the cylinder body, and an inlet arranged at the end face of the cylinder body, wherein separation oil cavities are uniformly distributed on the inner circumference of the cylinder body, the width of each separation oil cavity is consistent with the width of the cross section of the drying surface of the cylinder body, and the heat conduction oil drying cylinder structure at least comprises a conveying cavity capable of conveying heat conduction oil to the uppermost end of the drying cylinder along the rotating direction of the drying cylinder. The structure is characterized in that the heat conducting oil is transported to the top end of the cylinder body by utilizing the transporting cavity, so that the temperature of the drying surface is ensured. And every time the drying cylinder rotates for a circle, the heat conduction oil in the oil separation cavity is replaced once, so that the transmission efficiency of the heat conduction oil is ensured.

Preferably, the transportation cavity comprises an arc plate with the same distance from each point to the cylinder drying surface and a sealing plate for connecting the arc plate and the inner wall of the cylinder drying surface. The sealing plate, the arc plate and the inner wall of the drying surface of the cylinder body are matched to form a complete transportation cavity.

Preferably, the circular arc plate is provided with a gap for heat conduction oil to flow through, so that the heat conduction oil can uniformly enter the transportation oil cavity, and the temperature of the drying surface of the corresponding cylinder body is uniform.

Preferably, a cylinder body sealing plate for equally dividing the cylinder body is arranged in the cylinder body, a stirring sheet is arranged on the separated oil cavity, and the cylinder body sealing plate and the stirring sheet are used for stirring heat conduction oil in the cylinder body, so that heat conduction oil exchange is more uniform.

Preferably, the cylinder body sealing plate is provided with a gap for heat conduction oil to pass through, so that the cylinder body sealing plate has a good stirring effect.

Preferably, the transportation cavity is of a uniform cross-section structure or a convergent cross-section structure so as to adapt to different cylinder shapes and ensure uniform temperature in the banner direction.

Preferably, at least half cylinder of heat conducting oil is arranged in the cylinder body, and the liquid level of the heat conducting oil does not pass through the oil outlet, so that the lower half part of the cylinder surface is immersed in the heat conducting oil, and the temperature influence in the transverse direction is small.

Compared with the traditional heat-conducting oil drying cylinder, the heat-conducting oil drying cylinder structure designed by the invention is unique in design, the oil cavity and the conveying oil cavity inside the oil cavity are separated, the heat conducting oil is conveyed to the upper half part of drying, the enthalpy value of the upper half cylinder is increased, the drying requirement of paper sheets can be met, the reduction of the transverse amplitude temperature difference to +/-2 ℃ can be ensured, the heat-conducting oil drying cylinder structure is wide in applicability, is particularly suitable for narrow-width test paper machines, can meet the development of various new products, improves the working efficiency and reduces the cost.

Drawings

FIG. 1 is a schematic structural view of example 1.

Wherein: 1. a population; 2. a cylinder body; 3. an oil inlet and an oil outlet; 4. a cylinder body sealing plate; 5. a stirring sheet; 6. a transport chamber.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

The heat-conducting oil drying cylinder structure described in the embodiment comprises a cylinder body 2, an oil inlet and outlet 3 arranged at the shaft end of the cylinder body, and a population 1 arranged on the end surface of the cylinder body, wherein four separation oil cavities are uniformly distributed in the cylinder body 2, the width of each separation oil cavity is consistent with the width of the cross beam of the drying surface of the cylinder body 2, and the heat-conducting oil drying cylinder structure comprises a transportation cavity 6 which can transport heat-conducting oil to the uppermost end of the drying cylinder along the rotation direction of the drying cylinder. The transportation cavity 6 comprises arc plates with equal distance from each point to the drying surface of the cylinder body and a sealing plate for connecting the arc plates and the inner wall of the drying surface of the cylinder body. The complete transportation cavity 6 is formed by matching the sealing plate, the arc plate and the inner wall of the drying surface of the cylinder body. Be equipped with the cylinder body shrouding 4 of equalling divide the cylinder body in the cylinder body 2, the separate oil pocket on be equipped with stirring piece 5. The cylinder body closing plate 4 is formed by extending a bottom plate at one side of the transportation cavity into the cylinder body. The cylinder body sealing plate 4 is provided with a gap for heat conduction oil to pass through, so that the cylinder body sealing plate has a good stirring effect. The arc plate is also provided with a gap for heat conducting oil to flow through. The whole transportation cavity 6 is of a uniform cross-section structure or a convergent cross-section structure so as to adapt to the shapes of different cylinder bodies, and the temperature in the banner direction is uniform.

When the cylinder works, at least half cylinder of heat conducting oil is arranged in the cylinder body, and the liquid level of the heat conducting oil is over the oil outlet, so that the lower half part of the cylinder surface is immersed in the heat conducting oil.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.