Paper web extrusion dewatering device for papermaking

Abstract

The utility model relates to the technical field of paper processing, and discloses a paper web extrusion dewatering device for papermaking, which comprises a machine body, a vacuum adsorption roller and a vacuum box are arranged on the machine body, guide rollers are rotatably mounted in the machine body, papermaking felt is movably mounted on the four guide rollers, a bidirectional threaded rod is rotatably mounted on the machine body, and the bidirectional threaded rod is movably mounted on the machine body. A rotating disc is fixedly mounted at one end of the two-way threaded rod; the two-way threaded rod is connected with two nut pairs through threads, and cleaning devices are fixedly installed on the two nut pairs. A limiting block is fixedly mounted on the nut pair; the two cleaning devices are obliquely installed and located on the two sides of the papermaking felt correspondingly; according to the papermaking felt cleaning device, the cleaning devices can clean papermaking felt, and the distance between the two cleaning devices can be changed, so that the cleaning devices can be conveniently cleaned through the adjustment, and meanwhile, the equipment can be suitable for the papermaking felt with different thicknesses.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper processing technical field, concretely is a paper web extrusion dewatering device for papermaking. BACKGROUND

[0002] In the papermaking link, the wet paper web output by the paper machine net part contains a large amount of water, needs to be extruded to the wet paper web by the squeezing roller, the water in the wet paper web is extruded and is adsorbed by the felt, and then the dryness of the paper web is improved, so that the energy required for subsequent drying cylinder drying activity is saved.

[0003] The existing equipment is used, and the wet paper web contains adhesive and other impurities, which will stick to the felt in the extrusion dewatering process, and the effect of subsequent dewatering of the felt is affected.

[0004] Therefore, we propose a paper web extrusion dewatering device for papermaking to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in the prior art and provides a paper web extrusion dewatering device for papermaking.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A paper web extrusion dewatering device for papermaking, comprising a machine body, a vacuum adsorption roller and a vacuum box are arranged on the machine body, a guide roller is rotatably installed in the machine body, four guide rollers are movably installed with papermaking felt, a bidirectional threaded rod is rotatably installed on the machine body, a rotating disc is fixedly installed on one end of the bidirectional threaded rod;

[0008] Two nut pairs are connected to the bidirectional threaded rod through threads, and a cleaning device is fixedly installed on the two nut pairs;

[0009] A limiting block is fixedly installed on the nut pair;

[0010] The cleaning device is obliquely installed, and the two cleaning devices are respectively arranged on the two sides of the papermaking felt.

[0011] Preferably, the cleaning device comprises a moving plate, a fixed plate is fixedly installed on the moving plate, a scraper is movably installed on the fixed plate, an enclosed plate is fixedly installed on the moving plate and the fixed plate, and a drain pipe is inlaidly installed on the moving plate.

[0012] Preferably, the two scrapers are in direct contact with the two sides of the papermaking felt.

[0013] Preferably, a sliding groove is formed in the machine body, the sliding groove is perpendicular to the papermaking felt in the side view angle.

[0014] Preferably, the machine body is fixedly installed with a paper inlet and a paper outlet.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model discloses a rotating disc, bidirectional screw rod, nut pair and cleaning device are set up, when bidirectional screw rod is rotating, two nut pairs are mutually close or far away, and the distance between two cleaning devices also can synchronous change, and this adjustment makes the cleaning of the cleaning device become convenient, and also make the equipment can be applicable to different thickness papermaking felt.

[0017] The utility model discloses a moving plate, fixed plate, scraper, closing plate and drain pipe are set up, and the scraper can directly scrape the impurity and gum on the both sides of papermaking felt, guarantees the cleanliness of papermaking felt, and the scraper can also scrape the water of papermaking felt part, reduces the amount of water adsorbed on papermaking felt, reduces the energy required for subsequent vacuum tank dehydration. DRAWINGS

[0018] Figure 1 A paper web extrusion dehydration device for papermaking is provided.

[0019] Figure 2 A paper web extrusion dehydration device for papermaking is provided.

[0020] Figure 3 A paper web extrusion dehydration device for papermaking is provided.

[0021] Figure 4 A paper web extrusion dehydration device for papermaking is provided.

[0022] Figure 5 A paper web extrusion dehydration device for papermaking is provided.

[0023] In the figure: 1, machine body;2, paper inlet;3, paper outlet;4, vacuum suction roller;5, rotating disc;6, guide roller;7, papermaking felt;8, cleaning device;9, chute;10, vacuum tank;11, bidirectional screw rod;12, nut pair;13, limit block;14, moving plate;15, fixed plate;16, scraper;17, closing plate;18, drain pipe. DETAILED DESCRIPTION

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0025] Please refer to Figure 1 - Figure 5 A paper web extrusion dewatering device comprises a machine body 1, the machine body 1 is provided with a vacuum suction roller 4 and a vacuum box 10, the vacuum suction roller 4 is used for adsorbing a wet paper web, thereby driving the wet paper web to move and perform a pressing dewatering link, and the vacuum box 10 is used for performing a dewatering link on a papermaking felt 7.

[0026] As preferred, the wet paper web should be connected with a corresponding winding device (as shown) so that the winding device can provide a power source for the wet paper web, so that the wet paper web can move smoothly. Figure 3

[0027] The machine body 1 is internally rotatably installed with guide rollers 6, the four guide rollers 6 are movably installed with the papermaking felt 7, the guide rollers 6 are used for guiding the papermaking felt 7 to move on the guide rollers 6, thereby adsorbing water squeezed out of the wet paper web.

[0028] As preferred, under the action of the vacuum suction roller 4 and the guide roller 6, the wet paper web is closely attached to the papermaking felt 7, so that the water on the wet paper web can be smoothly transferred to the papermaking felt 7.

[0029] The machine body 1 is rotatably installed with a bidirectional threaded rod 11, one end of the bidirectional threaded rod 11 is fixedly installed with a rotating disc 5, and the bidirectional threaded rod 11 can be rotated by rotating the rotating disc 5.

[0030] The bidirectional threaded rod 11 is threadedly connected with two nut pairs 12, and the two nut pairs 12 are both fixedly installed with cleaning devices 8;

[0031] The two nut pairs 12 are installed on different threaded directions of the bidirectional threaded rod 11, and the distances from the two nut pairs 12 to the center position of the bidirectional threaded rod 11 are the same, so when the bidirectional threaded rod 11 rotates, the two nut pairs 12 approach or move away from each other, and the distance between the two cleaning devices 8 also synchronously changes, which makes it convenient to clean the cleaning devices 8 and can be suitable for papermaking felts 7 of different thicknesses.

[0032] The nut pair 12 is fixedly installed with a limiting block 13, and the limiting block 13 is used to make the nut pair 12 only move linearly; ​

[0033] The cleaning device 8 is obliquely installed and two cleaning devices 8 are respectively arranged on the two sides of the papermaking felt 7, so that the cleaning device 8 can not only scrape the impurities adhered on the papermaking felt 7 and ensure the cleanliness of the two sides of the papermaking felt 7, but also can scrape part of water on the papermaking felt 7, so as to reduce the amount of water adsorbed on the papermaking felt 7 and facilitate the subsequent cleaning process in the vacuum box 10.

[0034] As preferred, the vacuum box 10 can adopt the IBS multi-chamber vacuum water suction box of ILLIES, since the vacuum adsorption roller 4 and the vacuum box 10 are prior art and non-distinctive technical features, so they are not described here.

[0035] The cleaning device 8 comprises a moving plate 14, a fixed plate 15 is fixedly installed on the moving plate 14, a scraper 16 is movably installed on the fixed plate 15, and the scraper 16 is movably installed on the fixed plate 15 through a mortise and tenon structure. After the cleaning device 8 completes the cleaning of the papermaking felt 7, the scraper 16 can be conveniently and quickly disassembled for cleaning, so that the impurities and the like on the scraper 16 are washed clean, and normal use is ensured.

[0036] The moving plate 14 and the fixed plate 15 are fixedly installed with a sealing plate 17, and the moving plate 14 is embeddedly installed with a drain pipe 18. The moving plate 14, the fixed plate 15, the sealing plate 17 and the papermaking felt 7 can form a closed triangular space, so that water can be temporarily stored in the space and then discharged through the drain pipe 18.

[0037] The two scrapers 16 are in direct contact with the two sides of the papermaking felt 7, and the two scrapers 16 can directly scrape the impurities and the like adhered on the papermaking felt 7, so as to ensure the cleanliness.

[0038] The body 1 is provided with a sliding groove 9 for sliding of the moving plate 14, and the sliding groove 9 cooperates with the limiting block 13 at the back of the moving plate 14, so as to ensure that the moving plate 14 only moves linearly. In the side view, the sliding groove 9 is perpendicular to the papermaking felt 7.

[0039] The body 1 is fixedly installed with an inlet 2 and an outlet 3. The wet paper web enters the body 1 from the inlet 2, is pressed and dehydrated, and then is moved out through the outlet 3 under the cooperation of the vacuum adsorption roller 4.

[0040] The working process of the utility model is as follows: firstly, the rotating disc 5 is rotated to rotate the bidirectional threaded rod 11. When the bidirectional threaded rod 11 rotates, the two nut pairs 12 are close to or away from each other, so that the distance between the two cleaning devices 8 also synchronously changes, until the two scrapers 16 are directly in contact with the two sides of the papermaking felt 7.

[0041] After that, the wet paper web is made to enter into the body 1 from the paper inlet 2, and then the wet paper web is made to move synchronously with the papermaking felt 7, at this time, the water in the wet paper web is squeezed out and then is adsorbed by the papermaking felt 7, thereby improving the dryness of the paper web.

[0042] After that, the paper web is made to leave from the paper outlet 3 under the driving of the vacuum adsorption roller 4, and the papermaking felt 7 is made to move under the driving of the guide roller 6, when the papermaking felt 7 moves to the position of the cleaning device 8, the two scrapers 16 can directly scrape off the impurities and the adhesive substances adhered on the papermaking felt 7, thereby ensuring the cleanliness, at the same time, the scrapers 16 can also scrape off part of the water on the papermaking felt 7, thereby reducing the amount of the water adsorbed on the papermaking felt 7, the water is temporarily kept in the closed space formed by the moving plate 14, the fixed plate 15, the closed plate 17 and the papermaking felt 7, and then is discharged through the drain pipe 18.

[0043] The papermaking felt 7 continues to move, and further dehydration is carried out through the vacuum box 10, the papermaking felt 7 continues to move and then carries out the humidification activity, after that, the papermaking felt 7 recontacts with the wet paper web and carries out the repeated adsorption activity.

[0044] When the cleaning of the papermaking felt 7 is completed by the cleaning device 8, the scrapers 16 can be conveniently and quickly disassembled, and the cleaning activity for the scrapers 16 is carried out, so that the impurities and the adhesive substances on the scrapers 16 are washed clean, thereby ensuring the normal use in the subsequent period.

[0045] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0046] Although the embodiments of the present application have been shown and described, it is understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A paper web extrusion dewatering device for papermaking, comprising a machine body (1), a vacuum suction roller (4) and a vacuum box (10) being arranged on the machine body (1), a guide roller (6) being rotatably installed inside the machine body (1), and a papermaking felt (7) being movably installed on the four guide rollers (6), characterized in that, The body (1) is rotatably installed with a bidirectional threaded rod (11), and one end of the bidirectional threaded rod (11) is fixedly installed with a rotating disc (5); The bidirectional threaded rod (11) is threadedly connected with two nut pairs (12), and the two nut pairs (12) are fixedly installed with cleaning devices (8); The nut pair (12) is fixedly installed with a limiting block (13); The cleaning device (8) is obliquely installed, and the two cleaning devices (8) are respectively arranged at the two sides of the papermaking felt (7).

2. A paper web press dewatering device according to claim 1, wherein The cleaning device (8) comprises a moving plate (14), the moving plate (14) is fixedly installed with a fixed plate (15), the fixed plate (15) is movably installed with a scraper (16), the moving plate (14) and the fixed plate (15) are fixedly installed with a closed plate (17), and the moving plate (14) is embeddedly installed with a drain pipe (18).

3. A paper web press dewatering device according to claim 2, wherein The two scrapers (16) are in direct contact with the two sides of the papermaking felt (7).

4. A paper web press dewatering device according to claim 2, wherein The body (1) is internally provided with a sliding groove (9) for sliding of the moving plate (14), and the sliding groove (9) is perpendicular to the papermaking felt (7) in the side view angle.

5. A paper web press dewatering device according to claim 1, 2, 3 or 4 wherein, The body (1) is fixedly installed with a paper inlet (2) and a paper outlet (3).

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