CN117306295A - Double-net filter-pressing wet pulp machine - Google Patents

Abstract

The application discloses a wet thick liquid machine of double-wire filter-pressing belongs to pulping papermaking equipment technical field. The double-net filter pressing wet pulp machine comprises a pulp feeding component, mesh cloth, a wedge-shaped dehydration unit, a torsion-press dehydration unit and a counter-press dehydration unit; the twisting and pressing dehydration unit comprises a first twisting and pressing assembly and a second twisting and pressing assembly, wherein the first twisting and pressing assembly comprises a first upper pressing roller and a first lower pressing roller which are oppositely arranged, and the second twisting and pressing assembly comprises a second upper pressing roller and a second lower pressing roller which are oppositely arranged; the outer peripheral surfaces of the first lower pressing roller and the second lower pressing roller are coated with stainless steel layers, and the outer peripheral surfaces of the first upper pressing roller and the second upper pressing roller are coated with rubber layers. According to the double-net filter pressing wet pulp machine, on one hand, the roller surface abrasion of the lower pressing roller can be reduced, the roller surface replacement frequency of the lower pressing roller is reduced, and the production cost can be reduced; on the other hand, can prevent to go down the compression roller and go up the hard interference between the compression roller and lead to the screen cloth wearing and tearing, can improve the life of screen cloth, reduction in production cost.

Description

Double-net filter-pressing wet pulp machine

Technical Field

The invention relates to the technical field of pulping and papermaking equipment, in particular to a double-net filter-pressing wet pulp machine.

Background

In the paper industry, a pattern of centralized pulping, decentralized papermaking is commonly employed. Pulp mills need to transport the finished pulp to individual paper mills, and pulp transportation incurs significant transportation costs. The slurry is pressed by the double-net filter pressing wet slurry machine, so that the concentration of the slurry is improved, the water content in the slurry is reduced, and the transportation cost can be reduced. In the existing double-net filter pressing wet pulp machine, rubber is wrapped on the periphery of a compression roller of a torsion-press dehydration unit arranged at the front end of a pulp moving path, the contact surface of the roller surface of the compression roller and mesh cloth is large, the dehydration amount is large, the abrasion of the rubber surface of a lower compression roller is quick, the service life is short, the replacement frequency is high, and the production cost is increased.

Disclosure of Invention

The application provides a wet thick liquid machine of double-wire filter-pressing can solve the technical problem that the lower compression roller rubber face wearing and tearing of wet thick liquid machine of double-wire filter-pressing lead to manufacturing cost to increase soon.

In order to solve the technical problems, the double-net filter pressing wet pulp machine comprises a pulp feeding component, a mesh cloth, a wedge-shaped dehydration unit, a torsion-press dehydration unit and a counter-press dehydration unit, wherein pulp entering the pulp feeding component can sequentially pass through the wedge-shaped dehydration unit, the torsion-press dehydration unit and the counter-press dehydration unit along with the mesh cloth for dehydration; the twisting and pressing dehydration unit comprises a first twisting and pressing assembly and a second twisting and pressing assembly, wherein the first twisting and pressing assembly comprises a first upper pressing roller and a first lower pressing roller which are oppositely arranged, the second twisting and pressing assembly comprises a second upper pressing roller and a second lower pressing roller which are oppositely arranged, and the mesh cloth passes through the space between the first upper pressing roller and the first lower pressing roller and the space between the second upper pressing roller and the second lower pressing roller respectively in a curve track; the outer peripheral surfaces of the first lower pressing roller and the second lower pressing roller are coated with stainless steel layers, and the outer peripheral surfaces of the first upper pressing roller and the second upper pressing roller are coated with rubber layers.

According to the double-net filter pressing wet pulp machine, on one hand, the stainless steel layers and the rubber layers are respectively coated on the outer peripheral surfaces of the lower compression roller and the upper compression roller of the torsion compression assembly, so that the stainless steel layers coated by the lower compression roller are good in wear resistance, the roller surface wear of the lower compression roller can be reduced, the roller surface replacement frequency of the lower compression roller is reduced, and the production cost can be reduced; on the other hand, the rubber layer coated by the upper press roller has a buffer effect, so that the abrasion of the screen cloth caused by hard interference between the lower press roller and the upper press roller can be prevented, the service life of the screen cloth can be prolonged, and the production cost can be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of a twin-wire filter press wet slurry machine provided herein;

FIG. 2 is a schematic view of a partial structure of an embodiment of a twin-wire filter press wet slurry machine provided herein;

FIG. 3 is a schematic diagram of an embodiment of a wringing and dewatering unit according to the present disclosure;

FIG. 4 is a schematic view of another partial structure of an embodiment of a twin-wire filter press wet slurry machine provided herein;

fig. 5 is a schematic structural view of an embodiment of a pulp feeding assembly provided in the present application.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustrating the present invention, but do not limit the scope of the present invention. Likewise, the following examples are only some, but not all, of the examples of the present invention, and all other examples, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the present invention.

In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The terms "first," "second," "third," and the like in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. The terms "comprising" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The application provides a wet thick liquid machine of double-wire filter-pressing. Referring to fig. 1-4, a twin wire press wet pulper 100 may include a pulp feed assembly 10, a web 20, a wedge dewatering unit 30, a twist press dewatering unit 40, and a counter press dewatering unit 50. The slurry entering the slurry feed assembly 10 may sequentially pass through the wedge-shaped dewatering unit 30, the twist press dewatering unit 40, and the counter press dewatering unit 50 with the web 20. The mesh 20 may include an upper mesh 21 and a lower mesh 22, and the slurry is accommodated in a space formed by the upper mesh 21 and the lower mesh 22. The driving device drives the mesh cloth 20 to move, so that the mesh cloth 20 can drive the slurry to move. The width of the slurry channel of the wedge-shaped dehydrating unit 30 is gradually narrowed in the vertical direction along the moving direction of the slurry, thereby forming a press for the slurry, so that the slurry is dehydrated and formed. The movement track of the mesh cloth 20 in the torsion pressing dehydration unit 40 is curved so that the slurry in the mesh cloth 20 is fully contacted with the roller surface of the pressing roller, thereby rapidly reducing the moisture content in the slurry. The counter-pressure dewatering unit 50 comprises at least one set of counter-pressure rolls, and the counter-pressure dewatering unit 50 comprises three sets of counter-pressure rolls, as shown in fig. 1, for example. The movement track of the mesh cloth 20 in the opposite-pressing dehydration unit 50 may be in a straight line type.

The wringing and pressing dehydration unit 40 can include a first wringing and pressing assembly 41 and a second wringing and pressing assembly 42, as shown in fig. 2 and 3. The first twisting component 41 includes a first upper pressing roller 411 and a first lower pressing roller 412 that are disposed opposite to each other, the second twisting component 42 includes a second upper pressing roller 421 and a second lower pressing roller 422 that are disposed opposite to each other, and the web 20 passes through between the first upper pressing roller 411 and the first lower pressing roller 412, and between the second upper pressing roller 421 and the second lower pressing roller 422, respectively, in a curved track. Two oppositely arranged press rolls are pressed against the slurry passing through, so that the water in the slurry is extruded. The outer circumferential surfaces of the first lower compression roller 412 and the second lower compression roller 422 are coated with stainless steel layers, and the outer circumferential surfaces of the first upper compression roller 411 and the second upper compression roller 421 are coated with rubber layers.

According to the double-net filter pressing wet pulp machine 100 provided by the application, the outer peripheral surfaces of the lower compression roller and the upper compression roller of the torsion compression assembly are respectively coated with the stainless steel layer and the rubber layer, on one hand, the stainless steel layer coated by the lower compression roller has good wear resistance, so that the roller surface wear of the lower compression roller can be reduced, the roller surface replacement frequency of the lower compression roller is reduced, and the production cost can be reduced; on the other hand, the rubber layer coated by the upper press roller has a buffer effect, so that abrasion of the mesh cloth 20 caused by hard interference between the lower press roller and the upper press roller can be prevented, the service life of the mesh cloth 20 can be prolonged, and the production cost can be reduced.

Referring to fig. 1 and 2, in one embodiment, the twin-wire press wet slurry machine 100 further includes a frame 60. The frame 60 may be mounted on a ground-based basis. The frame 60 includes an upper frame 61 and a lower frame 62 disposed opposite to each other, and the wringing and dehydrating unit 40 and the counter-pressure dehydrating unit 50 are mounted in a mounting space formed by the upper frame 61 and the lower frame 62. The first lower press roller 412 and the second lower press roller 422 are mounted on the lower frame 62, and the first upper press roller 411 and the second upper press roller 421 are mounted on the upper frame 61. Because the upper press roller and the lower press roller of the torsion press assembly are respectively arranged on the upper frame 61 and the lower frame 62, the shielding of the installation fixing pieces of the upper press roller and the lower press roller on two sides of the mesh cloth 20 can be avoided, thereby facilitating the disassembly and the installation of the mesh cloth 20.

In one embodiment, as shown in fig. 2 and 3, the first twisting and pressing assembly 41 includes a first upper support 413 and a first upper support 414, and the second twisting and pressing assembly 42 includes a second upper support 423. The first upper support 413 and the second upper support 423 are respectively fixed to the upper frame 61, one end of the first upper support 414 is rotatably connected to the first upper support 413, and the opposite end of the first upper support 414 is supported on the second upper support 423. The first upper pressing roller 411 and the second upper pressing roller 421 are respectively mounted on the first upper bracket 414 and the second upper bracket 423. The first upper bracket 414 is rotatably connected with the first upper bracket 413 such that the first upper press roller 411 mounted on the first upper bracket 414 can rotate around the first upper bracket 413 to adjust the interval between the first upper press roller 411 and the first lower press roller 412, thereby adjusting the pressure of the first torsion press assembly 41 on the pulp. Through the arrangement, the upper press rollers of the first torsion press assembly 41 and the second torsion press assembly 42 are arranged on the upper frame 61, so that the installation fixing parts of the upper press rollers can be prevented from interfering with the disassembly and the installation of the mesh cloth 20, the replacement working time of the mesh cloth 20 can be saved, and the production efficiency is improved.

Optionally, referring to fig. 3, in an embodiment, a bearing seat 4141 is respectively provided on the first upper bracket 414 and the second upper bracket 423, and the first upper pressing roller 411 and the second upper pressing roller 421 are respectively mounted on the bearing seat 4141, and a cross section of the bearing seat 4141 is circular. Because the circular bearing seat 4141 has no outwardly extending blocking member, the installation fixture of the upper press roller can be prevented from interfering with the replacement of the mesh cloth 20, thereby facilitating the maintenance of the mesh cloth 20.

In one embodiment, as shown in fig. 2 and 3, the second torsion press assembly 42 includes a second lower support 424 and a second lower bracket 425, the second lower support 424 is fixed on the lower frame 62, one end of the second lower bracket 425 is rotatably connected to the second lower support 424, the opposite end of the second lower bracket 425 is supported on the lower frame 62, and the second lower press roller 422 is mounted on the second lower bracket 425. The second lower bracket 425 is rotatably connected with the second lower support 424 such that the second lower press roller 422 mounted on the second lower bracket 425 can rotate around the second lower support 424 to adjust the interval between the second upper press roller 421 and the second lower press roller 422, thereby adjusting the pressure of the second torsion press assembly 42 on the pulp.

Referring to fig. 2 and 3, in an embodiment, the second twisting and pressing assembly 42 further includes a bracket support 426, where the bracket support 426 is disposed along the slurry moving direction, and two ends of the bracket support 426 are respectively connected to the second upper bracket 423 and the upper frame 61. The support supporting member 426 is arranged between the second upper support 423 and the upper frame 61, so that the acting force of other connection points between the second upper support 423 and the upper frame 61 can be reduced, the section of the second upper support 423 is reduced, and the material consumption is saved.

In one embodiment, as shown in fig. 2 and 3, the first twisting and pressing assembly 41 includes a first air bag 415 and a second air bag 416 that are disposed at intervals in a vertical direction, the first air bag 415 is disposed between the first upper bracket 414 and the second upper bracket 423, and the second air bag 416 is disposed between the first upper bracket 414 and the upper frame 61. By adjusting the air pressure of the first air bladder 415 and the second air bladder 416, the second lower press roller 422 can be rotated about the second lower support 424 to adjust the spacing between the second upper press roller 421 and the second lower press roller 422, thereby adjusting the pressure of the second torsion press assembly 42 on the pulp. The adjustable roll shaft of the second torsion pressing assembly 42 is arranged on the lower press roll, the adjustable roll shaft of the first torsion pressing assembly 41 is arranged on the upper press roll, so that the adjustable roll shafts of the second torsion pressing assembly 42 and the adjustable roll shaft of the first torsion pressing assembly 41 are respectively distributed in the lower space and the upper space of the frame 60, the installation space of the frame 60 can be fully utilized, and the size of the double-net filter pressing wet pulp machine 100 is reduced.

It will be appreciated that the relative positions of the first torsion bar assembly 41 and the second torsion bar assembly 42 may be interchanged. Accordingly, it is also possible that the adjustable roller of the second torsion pressing assembly 42 is provided at the upper pressing roller, and the adjustable roller of the first torsion pressing assembly 41 is provided at the lower pressing roller.

Referring to fig. 2 and 3, in an embodiment, the second torsion assembly 42 includes a third air bag 427 disposed vertically, and the third air bag 427 is disposed between the second lower bracket 425 and the lower frame 62. By adjusting the air pressure of the third air bag 427, the second lower pressing roller 422 can be rotated around the second lower support 424, thereby adjusting the pressure of the second torsion pressing assembly 42 to the pulp.

In one embodiment, as shown in FIG. 4, the twin wire press wet slurry machine 100 includes a tensioning assembly 70 for adjusting the tension of the web 20. The tensioning assembly comprises a tensioning roller 71 and a driving cylinder 72, wherein the tensioning roller 71 is movably connected to the driving cylinder 72, and the mesh 20 is tensioned on the tensioning roller 71. The drive cylinder 72 may drive the tensioning roller 71 to move to adjust the tension of the web 20. The stroke of the drive cylinder 72 may be 250-350mm. The pulp feeding assembly 10 comprises a pulp feeding box 11 and a supporting column 12, wherein the pulp feeding box 11 is arranged at the top of the supporting column 12, a pulp outlet of the pulp feeding box 11 faces to the mesh cloth 20, and the pulp feeding box 11 transmits pulp to the mesh cloth 20. In the non-operating state, the distance d between the outer edge of the tension roller 71 and the support column 12 is 150-350mm.

In existing twin wire press wet pulpers, the distance d between the outer edge of the tensioning roller 71 and the support column 12 is determined based on the initial length of the web 20, which is typically less than 150mm. Under the long-term effect of tension, the mesh 20 will have a certain degree of stretching for the initial length, and if the mesh 20 is stretched in the tensioning space reserved according to the initial length, the mesh 20 will loose, the tension of the mesh 20 will decrease, the slurry bulges in the middle of the mesh 20, causing uneven slurry web distribution and poor dewatering effect. It has been found that the distance d between the outer edge of the tensioning roller 71 and the support column 12 is 150-350mm, which effectively alleviates the problem of reduced tension in the web 20 over extended periods of use. Alternatively, the distance d between the outer edge of the tension roller 71 and the support column 12 may be 150mm, 200mm, 250mm, 300mm, 350mm, etc., without being particularly limited herein.

After the twin-wire press wet pulp machine 100 is put into use, if the tension of the mesh cloth 20 is reduced, and the distance d between the outer edge of the tension roller 71 reserved in the original design and the support column 12 cannot meet the tension requirement of the mesh cloth 20, the position of the support column 12 needs to be moved. Because the lower end of the support column 12 is fixed on the ground foundation, the foundation is usually concrete, and the support column 12 needs to be poured again when the support column 12 is moved, so that the reworking amount is large and the transformation cost is high. In one embodiment, as shown in FIG. 5, support column 12 includes an upper section column 121 and a lower section column 122. The upper section column 121 is connected to the lower section column 122, and the headbox 11 is mounted on top of the upper section column 121. In the direction of movement of the slurry, the vertical axis of the upper stage column 121 is spaced from the vertical axis of the lower stage column 122, and the upper stage column 121 is located on the side away from the tension roller 71. The spacing between the vertical axis of the upper section post 121 and the vertical axis of the lower section post 122 is determined according to the tension space of the web 20. Specifically, in the non-operating state, the distance between the outer edge of the tension roller 71 and the upper stage column 121 is 150 to 350mm. Through the arrangement, when the existing double-net filter-pressing wet pulp machine 100 needs to be modified, only the upper end part of the original support column 12 needs to be cut off, the lower end of the original support column 12 is used as the lower section column 122, and the upper section column 121 is connected to the lower section column 122, so that the modification can be completed, and the engineering quantity can be reduced and the modification cost can be reduced because the foundation of the support column 12 does not need to be adjusted. Optionally, a connection plate, stiffening ribs, etc. may be provided at the top end of the lower section column 122 to connect the upper section column 121.

The application provides a wet thick liquid machine of double-wire filter-pressing has following beneficial effect at least:

1. the outer peripheral surfaces of the lower compression roller and the upper compression roller of the torsion and compression assembly are respectively coated with a stainless steel layer and a rubber layer, so that on one hand, the stainless steel layer coated by the lower compression roller has good wear resistance, the roller surface wear of the lower compression roller can be reduced, the roller surface replacement frequency of the lower compression roller can be reduced, and the production cost can be reduced; on the other hand, the rubber layer coated by the upper press roller has a buffer effect, so that abrasion of the mesh cloth 20 caused by hard interference between the lower press roller and the upper press roller can be prevented, the service life of the mesh cloth 20 can be prolonged, and the production cost can be reduced.

2. The upper press roller and the lower press roller of the torsion press assembly are respectively arranged on the upper frame 61 and the lower frame 62, so that the shielding of the upper press roller and the lower press roller on two sides of the mesh 20 by the installation fixing pieces can be avoided, and the disassembly and the installation of the mesh 20 are facilitated.

3. The first upper bracket 414 and the second upper bracket 423 are respectively provided with the bearing seat 4141, the cross section of the bearing seat 4141 is circular, the installation fixing piece of the upper pressing roller can be prevented from obstructing the replacement of the mesh cloth 20, and the maintenance of the mesh cloth 20 is facilitated.

4. The adjustable roller of the second torsion pressing assembly 42 is arranged on the lower pressing roller, the adjustable roller of the first torsion pressing assembly 41 is arranged on the upper pressing roller, so that the adjustable roller of the second torsion pressing assembly 42 and the adjustable roller of the first torsion pressing assembly 41 are respectively distributed in the lower space and the upper space of the frame 60, the installation space of the frame 60 can be fully utilized, and the size of the double-net filter pressing wet pulp machine 100 is reduced.

5. In the non-working state, the distance between the outer edge of the tensioning roller 71 and the support column 12 is 150-350mm, so that the problem that the tension of the mesh 20 is reduced in long-term use can be effectively relieved.

6. The support column 12 comprises an upper section column 121 and a lower section column 122, the vertical axis of the upper section column 121 and the vertical axis of the lower section column 122 are arranged at intervals, the upper section column 121 is positioned at one side far away from the tensioning roller 71, the engineering quantity of the existing double-net filter-pressing wet pulp machine 100 can be reduced, and the transformation cost is reduced.

The foregoing description is only a partial embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims (10)

1. A twin-wire press wet pulp machine, comprising:

the device comprises a pulp feeding assembly, a mesh cloth, a wedge-shaped dewatering unit, a torsion-pressure dewatering unit and a counter-pressure dewatering unit, wherein pulp entering the pulp feeding assembly can sequentially pass through the wedge-shaped dewatering unit, the torsion-pressure dewatering unit and the counter-pressure dewatering unit along with the mesh cloth for dewatering;

the twisting and pressing dehydration unit comprises a first twisting and pressing assembly and a second twisting and pressing assembly, the first twisting and pressing assembly comprises a first upper pressing roller and a first lower pressing roller which are oppositely arranged, the second twisting and pressing assembly comprises a second upper pressing roller and a second lower pressing roller which are oppositely arranged, and the mesh cloth passes through the space between the first upper pressing roller and the first lower pressing roller and the space between the second upper pressing roller and the second lower pressing roller respectively in a curve track;

the outer peripheral surfaces of the first lower pressing roller and the second lower pressing roller are coated with stainless steel layers, and the outer peripheral surfaces of the first upper pressing roller and the second upper pressing roller are coated with rubber layers.

2. The twin-wire press wet pulp machine of claim 1, comprising a frame comprising an upper frame and a lower frame arranged in opposition, wherein the twist press dewatering unit and the counter press dewatering unit are arranged in an installation space formed by the upper frame and the lower frame, the first lower press roller and the second lower press roller are installed on the lower frame, and the first upper press roller and the second upper press roller are installed on the upper frame.

3. The twin-wire press wet slurry machine of claim 2, wherein the first twist press assembly comprises a first upper support and a first upper bracket, and the second twist press assembly comprises a second upper bracket;

the first upper support and the second upper support are respectively fixed on the upper rack, one end of the first upper support is rotatably connected to the first upper support, and the opposite end of the first upper support is supported on the second upper support;

the first upper pressing roller and the second upper pressing roller are respectively arranged on the first upper bracket and the second upper bracket.

4. The twin-wire press wet slurry machine of claim 3, wherein the second torsion press assembly includes a second lower support and a second lower support, the second lower support being fixed to the lower frame, one end of the second lower support being rotatably connected to the second lower support, an opposite end of the second lower support being supported on the lower frame, the second lower press roll being mounted on the second lower support.

5. The twin-wire press wet pulp machine of claim 1, comprising a tensioning assembly for adjusting the tension of the web, the tensioning assembly comprising a tensioning roller and a drive cylinder, the tensioning roller being movably connected to the drive cylinder, the web being tensioned to the tensioning roller;

the pulp feeding assembly comprises a pulp feeding box and a supporting column, the pulp feeding box is arranged at the top of the supporting column, a pulp outlet of the pulp feeding box faces to the mesh cloth, and the pulp feeding box transmits the pulp to the mesh cloth;

in the non-working state, the distance between the outer edge of the tensioning roller and the supporting column is 150-350mm.

6. The twin-wire press wet slurry machine of claim 5, wherein the support column comprises an upper section column and a lower section column, the upper section column is connected to the lower section column, the vertical axis of the upper section column is spaced from the vertical axis of the lower section column in the direction of the slurry movement, and the upper section column is located on a side away from the tension roller.

7. The twin-wire press wet slurry machine of claim 3, wherein the first torsion press assembly includes a first air bladder and a second air bladder disposed in a vertical spacing, the first air bladder disposed between the first upper support and the second upper support, the second air bladder disposed between the first upper support and the upper frame.

8. The twin wire press wet slurry machine of claim 4, wherein the second torsion press assembly includes a third bladder disposed vertically, the third bladder being disposed between the second lower support and the lower frame.

9. The twin-wire press wet slurry machine of claim 4, wherein the second torsion press assembly comprises a rack support, the rack support is disposed along the slurry moving direction, and two ends of the rack support are respectively connected to the second upper rack and the upper rack.

10. The twin-wire press wet pulp machine according to claim 3, wherein bearing seats are respectively arranged on the first upper bracket and the second upper bracket, the first upper press roller and the second upper press roller are respectively arranged on the bearing seats, and the cross sections of the bearing seats are circular.