A hole groove dewatering press roller structure

Abstract

The utility model discloses a kind of hole groove dehydration pressure roller structures, including upper pressure roller, lower pressure roller, upper dry net, lower dry net and water pan;The water pan is set below the lower pressure roller, the surface of the lower pressure roller is provided with water suction hole, the water suction hole is provided with magnetic suction slider, the lower pressure roller inside is close to the one end of the upper pressure roller and is provided with the first arc magnetic suction block articulated with the lower pressure roller;Through upper pressure roller and lower pressure roller extrusion paper web and extrude moisture, using first arc magnetic block to the magnetic suction slider is magnetically attracted, so that magnetic slider moves in water suction hole towards first arc magnetic block, so that negative pressure is formed in water suction hole and water is absorbed;Subsequently by lower pressure roller rotation, so that magnetic suction slider resets under centrifugal action and extrudes moisture, to realize efficient water absorption and efficient drainage, so as to facilitate to increase the dryness of paper web, reduce the consumption of drying steam, to save energy and reduce emissions.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment, specifically to a grooved dewatering pressure roller structure. Background Technology

[0002] The paper industry is a major energy consumer, and steam consumption is one of its resource consumption factors. Saving resources is a requirement for building a resource-saving and environmentally friendly society. How to reduce resource waste is also a challenge facing the paper industry. With the increasing environmental awareness of the people, energy conservation and emission reduction are also fundamental to the sustainable development of the paper industry.

[0003] To dry paper, there are two methods: squeezing dewatering and drying dewatering. Theoretically, for every 1% decrease in the moisture content of the paper web exiting the press section, the steam consumption for drying is 5%. The more water removed from the press section, the less steam is needed. In the press section, the paper is squeezed out of water by the upper and lower press rollers. This water must be carried away in time, otherwise it will be reabsorbed by the felt and return to the paper surface. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a grooved dewatering roller structure to solve the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a grooved dewatering pressure roller structure, including an upper pressure roller, a lower pressure roller, an upper dry wire, a lower dry wire, and a water receiving tray; the lower pressure roller is disposed below the upper pressure roller, the upper dry wire and the lower dry wire clamp the paper web and pass between the lower pressure roller and the upper pressure roller, the upper pressure roller descends towards the lower pressure roller and squeezes the lower pressure roller; the water receiving tray is disposed below the lower pressure roller, the surface of the lower pressure roller is provided with water suction holes, a magnetic suction slider is disposed in the water suction holes, and a first arc-shaped magnetic suction block is disposed inside the lower pressure roller near the upper pressure roller and hinged to the lower pressure roller.

[0006] Preferably, the lower pressure roller includes a mandrel, end caps, an outer roller surface, a bearing, and an inner roller surface; the end caps are fixedly installed at both ends of the mandrel, the outer roller surface is fixedly installed between the end caps, the bearing is fixedly installed on the mandrel, and the inner roller surface is fixedly installed on the bearing; the first arc-shaped magnetic block is disposed in the mounting groove of the inner roller surface and is close to the upper pressure roller.

[0007] Preferably, the outer roller surface includes a first roller surface layer and a second roller surface layer. The first roller surface layer has a first countersunk hole arrayed on it, and the second roller surface layer has a second countersunk hole corresponding to the first countersunk hole. The diameter of the second countersunk hole is smaller than the diameter of the first countersunk hole. The magnetic slider is disposed in the second countersunk hole, and one end of the magnetic slider extends into the second countersunk hole. The side of the magnetic slider near the first arc-shaped magnetic block is attracted to the first arc-shaped magnetic block by opposite polarities.

[0008] Preferably, a second arc-shaped magnetic block is also provided in the mounting groove on the inner roller surface near the water receiving tray, and the side of the second arc-shaped magnetic block near the magnetic slider is repelled by the magnetic slider.

[0009] Preferably, a support rod is provided inside the water receiving tray, and a scraper is provided at the end of the support rod, with the end of the scraper abutting against the roller surface of the lower pressure roller.

[0010] Preferably, a water-absorbing groove is also provided between the water-absorbing holes.

[0011] The main technical advantages of this invention are as follows: the upper and lower pressure rollers squeeze the paper web and squeeze out the water. The first arc-shaped magnetic block magnetically attracts the magnetic slider, causing the magnetic slider to move towards the first arc-shaped magnetic block within the water absorption hole, thereby creating a negative pressure within the water absorption hole and absorbing water. Subsequently, the lower pressure roller rotates, causing the magnetic slider to reset under centrifugal force and squeeze out the water, thus achieving efficient water absorption and drainage. This helps increase the dryness of the paper web, reduce the consumption of drying steam, and thus save energy and reduce emissions. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a side sectional view of the lower pressure roller;

[0014] Figure 3 This is a front side view of the lower pressure roller;

[0015] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0016] The attached diagram is labeled as follows: 1-Upper pressure roller, 2-Lower pressure roller, 21-Suction hole, 211-Suction groove, 22-Magnetic slider, 23-First arc-shaped magnetic block, 24-Mandrel, 25-End cap, 26-Outer roller surface, 261-First roller surface layer, 262-Second roller surface layer, 263-First countersunk hole, 264-Second countersunk hole, 27-Bearing, 28-Inner roller surface, 281-Mounting groove, 29-Second arc-shaped magnetic block, 3-Upper dry net, 4-Lower dry net, 5-Water receiving tray, 51-Support rod, 52-Scraper blade. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0018] In this embodiment, it should be understood that the terms "middle," "upper," "lower," "top," "right side," "left end," "above," "back," "center," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0019] Furthermore, unless otherwise specified in this specific embodiment, the connection or fixing method between components can be achieved by bolt fixing, pin fixing, or pin connection commonly used in the prior art. Therefore, it will not be described in detail in this embodiment.

[0020] This utility model provides a grooved dewatering roller structure, such as... Figure 1-4 As shown, the assembly includes an upper pressure roller 1, a lower pressure roller 2, an upper dry wire 3, a lower dry wire 4, and a drip tray 5. The lower pressure roller 2 is positioned below the upper pressure roller 1. The upper dry wire 3 and the lower dry wire 4 clamp the paper web and pass it between the lower pressure roller 2 and the upper pressure roller 1. The upper pressure roller 1 descends towards the lower pressure roller 2 and squeezes the lower pressure roller 2. The drip tray 5 is positioned below the lower pressure roller 2. The surface of the lower pressure roller 2 is provided with water absorption holes 21, and a magnetic slider 22 is provided inside the water absorption holes 21. The lower pressure roller 2 has a connection point with the upper pressure roller 1 at one end. The first arc-shaped magnetic block 23, hinged to the pressure roller 2, squeezes the paper web and squeezes out the water through the upper pressure roller 1 and the lower pressure roller 2. The first arc-shaped magnetic block 23 magnetically attracts the magnetic slider 22, causing the magnetic slider 22 to move towards the first arc-shaped magnetic block 23 within the water absorption hole 21, thereby creating a negative pressure within the water absorption hole 21 and absorbing water. Subsequently, the rotation of the lower pressure roller 2 causes the magnetic slider 22 to reset under centrifugal force and squeeze out the water, thereby achieving efficient water absorption and efficient water drainage, which helps to increase the dryness of the paper web, reduce the consumption of drying steam, and thus save energy and reduce emissions.

[0021] Preferably, the lower pressure roller 2 includes a spindle 24, an end cap 25, an outer roller surface 26, a bearing 27, and an inner roller surface 28. The end cap 25 is fixedly installed at both ends of the spindle 24, the outer roller surface 26 is fixedly installed between the end caps 25, the bearing 27 is fixedly installed on the spindle 24, and the inner roller surface 28 is fixedly installed on the bearing 27. The first arc-shaped magnetic block 23 is disposed in the mounting groove 281 of the inner roller surface 28 and close to the upper pressure roller 1. The bearing 27 enables the inner roller surface 28 to be rotatably connected to the spindle 24, thereby keeping the position of the first arc-shaped magnetic block 23 unchanged.

[0022] Preferably, the outer roller surface 26 includes a first roller surface layer 261 and a second roller surface layer 262. The first roller surface layer 261 is provided with an array of first countersunk holes 263, and the second roller surface layer 262 is provided with second countersunk holes 264 corresponding to the first countersunk holes 263. The diameter of the second countersunk hole 264 is smaller than that of the first countersunk hole 263, thereby preventing the magnetic slider 22 from coming out of the second countersunk hole 264. The magnetic slider 22 is disposed in the second countersunk hole 264, and one end of the magnetic slider 22 extends into the second countersunk hole 264. The side of the magnetic slider 22 near the first arc-shaped magnetic block 23 is attracted to the first arc-shaped magnetic block 23 by opposite polarity, thereby enabling the magnetic slider 22 to move toward the first arc-shaped magnetic block 23 and creating negative pressure in the first countersunk hole 263 and the second countersunk hole 264.

[0023] Preferably, a second arc-shaped magnetic block 29 is also provided in the mounting groove 281 on the inner roller surface 28 near the water receiving tray 5. The side of the second arc-shaped magnetic block 29 near the magnetic slider 22 is repelled by the magnetic slider 22.

[0024] Preferably, a support rod 51 is provided inside the water receiving tray 5, and a scraper 52 is provided at the end of the support rod 51. The end of the scraper 52 abuts against the roller surface of the lower pressure roller 2 to treat the surface of the lower pressure roller 2 with water and reduce the surface moisture of the lower pressure roller 2.

[0025] Preferably, a water absorption groove 211 is also provided between the water absorption holes 21, so that water can be passively absorbed through the water absorption groove 211 to improve the water absorption efficiency.

[0026] The main technical advantages of this invention are as follows: the upper and lower pressure rollers squeeze the paper web and squeeze out the water. The first arc-shaped magnetic block magnetically attracts the magnetic slider, causing the magnetic slider to move towards the first arc-shaped magnetic block within the water absorption hole, thereby creating a negative pressure within the water absorption hole and absorbing water. Subsequently, the lower pressure roller rotates, causing the magnetic slider to reset under centrifugal force and squeeze out the water, thus achieving efficient water absorption and drainage. This helps increase the dryness of the paper web, reduce the consumption of drying steam, and thus save energy and reduce emissions.

[0027] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A flume dewatering press roll structure, characterized by, The application relates to a papermaking device, which comprises an upper pressing roller, a lower pressing roller, an upper dry net, a lower dry net and a water pan; the lower pressing roller is arranged below the upper pressing roller, the upper dry net and the lower dry net clamp a paper web to pass between the lower pressing roller and the upper pressing roller, the upper pressing roller is lowered towards the lower pressing roller and presses the lower pressing roller; the water pan is arranged below the lower pressing roller, the surface of the lower pressing roller is provided with water suction holes, the water suction holes are provided with magnetic suction sliding blocks, and the lower pressing roller is internally provided with a first arc-shaped magnetic suction block which is hinged to the lower pressing roller and is close to the upper pressing roller.

2. A slot dewatering press roll structure as claimed in claim 1, wherein, The lower pressing roller comprises a mandrel, end covers, an outer roller surface, bearings and an inner roller surface; the end covers are fixedly installed at two ends of the mandrel, the outer roller surface is fixedly installed between the end covers, the bearings are fixedly installed on the mandrel, and the inner roller surface is fixedly installed on the bearings; the first arc-shaped magnetic suction block is arranged in an installation groove of the inner roller surface and is close to the upper pressing roller.

3. A slot dewatering press roll structure as claimed in claim 2 wherein, The outer roller surface comprises a first roller surface layer and a second roller surface layer, first counterbores are arranged on the first roller surface layer in an array, and second counterbores corresponding to the first counterbores are arranged on the second roller surface layer; the diameter of the second counterbores is smaller than that of the first counterbores; the magnetic suction sliding blocks are arranged in the second counterbores, and one end of the magnetic suction sliding blocks extends towards the second counterbores; the side of the magnetic suction sliding blocks close to the first arc-shaped magnetic suction block is attracted to the first arc-shaped magnetic suction block.

4. A slot dewatering press structure as claimed in claim 3 wherein, The inner roller surface is further provided with a second arc-shaped magnetic suction block in the installation groove on the water pan, and the side of the second arc-shaped magnetic suction block close to the magnetic suction sliding blocks is repelled from the magnetic suction sliding blocks.

5. A slot dewatering press roll structure as claimed in claim 1 wherein, The water pan is provided with a support rod, the support rod is provided with a water scraping plate at the end, and the end of the water scraping plate abuts against the roller surface of the lower pressing roller.

6. A slot dewatering press roll structure as claimed in claim 1 wherein, Water suction grooves are further arranged between the water suction holes.

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