Composite roller

Abstract

The composite roller comprises a roller part, a rotating assembly and a cleaning assembly, the rotating assembly comprises a rotating piece and a supporting piece, the roller part is arranged around the supporting piece, the rotating piece is arranged at the end of the roller part and connected with the roller part, and the rotating part is used for driving the roller part to rotate around the supporting piece; the cleaning assembly comprises a cleaning part and a fixing part, the cleaning part penetrates through the rotating part to enter the inner side of the roller part, and the cleaning part is used for releasing a cleaning agent to the inner side of the roller part; the fixing piece is arranged at the end of the supporting piece and used for fixing the cleaning piece so that the cleaning piece can not rotate along with rotation of the rotating piece and the roller part. According to the composite roller, the cleaning assembly is arranged in the roller, the inner side of the roller part can be cleaned under the condition that the roller part does not stop rotating, it is effectively guaranteed that the surface of the roller part is clean, meanwhile, the suction efficiency of the roller part is improved, and the problem of material accumulation of the roller part is solved.

Description

Technical Field

[0001] This application relates to the field of papermaking machinery technology, and in particular to a composite roll. Background Technology

[0002] In existing papermaking technology, composite rolls are key components of papermaking machines. A composite roll is a roll made by combining multiple materials or functional layers through a specific process. Structurally, a composite roll generally consists of a core, an intermediate layer (such as a metal alloy layer, rubber layer, or ceramic layer), and a surface layer (which can be designed as a wear-resistant layer of different materials depending on requirements). This multi-layered structural design allows composite rolls to adapt to complex papermaking processes and meet the requirements of different paper types and production conditions.

[0003] However, in actual use, material accumulation often occurs on the composite roll shell, meaning that residues from raw materials or processing accumulate on the roll shell surface. If this phenomenon is not addressed promptly, bubbling will occur on the paper web surface, leading to paper breaks. Frequent shutdowns to clean up accumulated material will disrupt the production process, reduce production efficiency, and cause scratches, spots, or unevenness on the product surface, severely affecting the product's appearance quality, physical properties, and mechanical properties. Furthermore, the accumulated material may contain impurities, further contaminating the product and affecting its performance and safety. Utility Model Content

[0004] To address the problems existing in the prior art, embodiments of this application provide a composite roller, which has a simple assembly and high cleaning efficiency, comprising:

[0005] Roller section;

[0006] A rotating assembly includes a rotating component and a supporting component. The roller portion is arranged around the supporting component. The rotating component is disposed at the end of the roller portion and connected to the roller portion. The rotating component is used to drive the roller portion to rotate around the supporting component.

[0007] A cleaning assembly includes a cleaning component and a fixing component. The cleaning component passes through the rotating component and enters the inner side of the roller section. The cleaning component is used to release cleaning agent into the inner side of the roller section. The fixing component is disposed at the end of the support component and is used to fix the cleaning component so that the cleaning component does not rotate with the rotation of the rotating component and the roller section.

[0008] Optionally, the rotating member is arranged around the support member, the support member has a receiving cavity, and the cleaning member extends to the inner side of the roller through the receiving cavity.

[0009] Optionally, the cleaning member comprises a first cleaning pipe, a second cleaning pipe and a spraying pipe, the first cleaning pipe and the second cleaning pipe respectively pass through the accommodating cavity and are connected to two ends of the spraying pipe.

[0010] Optionally, the cleaning liquid in the first cleaning pipe and the cleaning liquid in the second cleaning pipe are hydraulically counter punched in the spraying pipe.

[0011] Optionally, the rotating member comprises a first rotating member and a second rotating member, the first rotating member is arranged on one side of the cleaning member entering the roller part, the second rotating member is arranged on the other side of the roller part in the length direction, the second rotating member is a driving rotating member, the first rotating member is a driven rotating member, the second rotating member rotates to drive the roller part to rotate, thereby driving the first rotating member to rotate.

[0012] Optionally, the rotating member further comprises a first water blocking member and a second water blocking member, the first water blocking member is connected with the first rotating member, the second water blocking member is connected with the second rotating member, the first water blocking member and the second water blocking member rotate with the rotation of the roller part.

[0013] Optionally, the second rotating member is provided with an accommodating groove, the support member extends from the first rotating member to the inside of the roller part, the support member extends into the accommodating groove of the second rotating member and does not contact with the accommodating groove.

[0014] Optionally, the fixing member comprises a first fixing member and a second fixing member, the second fixing member is arranged between the support member and the second water blocking member, the second fixing member comprises a stop member, the support member is provided with a stop cooperating member, the stop member and the stop cooperating member cooperate to prevent the second rotating member and the second water blocking member from driving the support member to rotate.

[0015] Optionally, the first rotating member and the support member are provided with the first fixing member, the first fixing member connects the first rotating member and the support member, the first fixing member is used for providing support for the rotation of the first rotating member, and simultaneously makes the support member not rotate with the rotation of the first rotating member.

[0016] Optionally, the first fixing member comprises a rotating base, an outer shell and a sealing member, the rotating base is connected with the first rotating member, the first rotating member is located between the support member and the rotating base;

[0017] the outer shell is connected with the sealing member and the rotating base, the sealing member is connected with the support member, and the sealing member is used for keeping the rotation of the first rotating member smooth.

[0018] The composite roller provided by the application can clean the inner side of the roller part under the condition that the roller part does not stop rotating, effectively ensures the surface cleaning of the roller part, improves the suction efficiency of the roller part, and solves the problem of material accumulation of the roller part. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0020] Figure 1 is a cross-sectional structure schematic view of the composite roller in the embodiment of the application;

[0021] Figure 2 is a structure schematic view of the composite roller in another embodiment;

[0022] Figure 3 is Figure 1 is an enlarged structure schematic view of A in the embodiment;

[0023] Figure 4 is Figure 1 is an enlarged structure schematic view of B in the embodiment;

[0024] Fig. 1 is a composite roller, Fig. 10 is a roller part, Fig. 20 is a rotating assembly, Fig. 200 is a rotating piece, Fig. 2000 is a first rotating piece, Fig. 2000a is a first bearing, Fig. 2000b is a first water retaining piece, Fig. 2000c is a first matching piece, Fig. 2000d is a first rotating matching piece, Fig. 201 is a second rotating piece, Fig. 201a is a bearing assembly, Fig. 201b is a second water retaining piece, Fig. 201c is a second matching piece, Fig. 201d is a second rotating matching piece, Fig. 202 is a containing groove, Fig. 203 is an avoiding hole, Fig. 204 is a supporting piece, Fig. 2040 is a supporting frame, Fig. 2041 is a containing cavity, Fig. 2042 is a supporting fixed part, Fig. 30 is a cleaning assembly, Fig. 300 is a cleaning piece, Fig. 3000 is a first cleaning pipeline, Fig. 3001 is a second cleaning pipeline, Fig. 3002 is a spraying pipeline, Fig. 301 is a fixed piece, Fig. 302 is a first fixed piece, Fig. 3020 is a rotating base, Fig. 3021 is an outer shell, Fig. 3022 is a sealing piece, Fig. 3023 is a bearing outer shell, Fig. 3024 is a shell, Fig. 3025 is a scale disc, Fig. 303 is a second fixed piece, Fig. 3030 is a stop piece, Fig. 3031 is a stop matching piece, Fig. 3032 is a fixed base, Fig. 3033 is a second bearing, and Fig. 304 is a positioning block. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0026] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

[0027] The terms "first", "second", "third" in the embodiments of the present application are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. The terms "include" and "have" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or components inherent to the process, method, product or device.

[0028] In this document, the term "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it independent or alternative to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] In the existing papermaking technology, the paper machine as the core equipment of paper production, each component inside it plays a vital role, the composite roller as one of the key components on the paper machine, not only plays an important role in calendering and smoothing, controlling moisture content, improving production efficiency, optimizing energy consumption, adapting to various paper types, but also directly relates to the stability of the production process and energy consumption level.

[0030] However, in actual use, the material accumulation phenomenon often occurs on the roll shell of the composite roll, that is, the raw materials or residues in the processing process are accumulated on the roll shell surface. If this phenomenon is not handled in time, the bubble phenomenon occurs on the surface of the paper web, causing the paper web to break. Frequent stop to clean the accumulated material will interrupt the production process and reduce the production efficiency. The accumulated material causes scratches, spots or unevenness on the surface of the product, seriously affecting the appearance quality of the product, affecting the physical properties and mechanical properties of the product. At the same time, the accumulated material may contain impurities, further polluting the product and affecting its use performance and safety.

[0031] In view of the problems of easy material accumulation in the roll surface and pores of the composite roll, which causes bubble breakage and affects the quality, a mature and effective treatment scheme has not been provided in the market. Production generally uses the opportunity of shutdown to enter the composite roll, and uses a high-pressure water gun to clean the pore structure of the roll shell. However, generally, there is only a shutdown opportunity every half month, but the accumulation period of the roll shell is generally 5-8 days, so the cleaning problem of the roll accumulation has been affecting the normal production.

[0032] The accumulation of the roll shell of the composite roll is a complex and highly valued problem, which not only affects the product quality and production efficiency, but also increases the risk of equipment damage and maintenance cost. Although the optimization of raw materials and process conditions, the improvement of equipment condition, and the strengthening of cleaning and maintenance can effectively prevent and solve the accumulation problem, frequent shutdown for flushing limits the paper machine, and a large amount of research and development investment affects the production capacity and product quality stability of the paper machine.

[0033] The embodiments of the present application aim to overcome the defects and deficiencies in the prior art, and provide a composite roll which aims to solve the problems of accumulation of raw materials or residues in the processing process on the roll shell surface, causing scratches, spots or unevenness on the surface of the product, seriously affecting the appearance quality of the product, affecting the physical properties and mechanical properties of the product, and the like.

[0034] In order to solve the problems of the prior art, the present application provides a composite roll 1 which can clean the roll part and will not stop the work of the roll part, as shown in Figure 1 , and the like. Figure 1is a schematic view of a cross-sectional structure of a composite roller in the embodiments of the present application. The composite roller 1 comprises a roller part 10, a rotating assembly 20 and a cleaning assembly 30. The rotating assembly 20 comprises a rotating piece 200 and a supporting piece 202. The roller part 10 is arranged around the supporting piece 202. The rotating piece 200 is arranged at the end of the roller part 10 and connected with the roller part 10. The rotating assembly 20 is used to drive the roller part 10 to rotate around the supporting piece 202. The cleaning assembly 30 comprises a cleaning piece 300 and a fixing piece 301. The cleaning piece 300 penetrates the rotating piece 200 and enters the inside of the roller part 10. The fixing piece 301 is arranged at the end of the supporting piece 202. The fixing piece 301 is used to fix the cleaning piece 300 so that the cleaning piece 300 does not rotate with the rotating piece 200 and the roller part 10. In some embodiments, the roller part 10 is a cylindrical column with both ends not sealed. The rotating piece 200 clamps both ends of the roller part 10 and simultaneously serves as the sealing surface of both ends of the roller part 10. The rotating piece 200 is provided with an avoiding groove 201 with the center of the sealing surface as the center. The avoiding groove 201 is used to make the supporting piece 202 and the cleaning piece 300 pass through the rotating piece 200 and enter the inside of the roller part 10. The cleaning assembly 30 and the supporting piece 202 can pass through the rotating piece 200 in parallel or the cleaning piece 300 can be contained in the supporting piece 202 and pass through the rotating piece 200. In the embodiments of the present application, the supporting piece 202 and the cleaning assembly 30 pass through the rotating piece 200. At the same time, the fixing piece 301 is used to make the supporting piece 202 and the cleaning piece 300 trend with the rotating piece 200 when the rotating piece 200 drives the roller part 10 to rotate. Thus, the roller part 10 can be sprayed with cleaning liquid for cleaning under the condition that the roller part 10 normally rotates. In some embodiments, the supporting piece 202 is provided with a supporting frame 2020 which extends from the supporting piece 202 to the roller part 10. The bottom of the supporting frame 2020 which contacts with the roller part 10 can be but is not limited to a replaceable nylon block. The bottom has a relatively low friction coefficient and can support the supporting piece 202 without affecting the rotation of the roller part 10.

[0035] In order to make the cleaning piece 300 enter the roller part 10 without occupying too much cleaning volume, the cleaning piece 300 is arranged in the avoiding groove 201 of the rotating piece 200. Figure 1As shown, the rotating member 200 is arranged around the support member 202, the support member 202 is internally provided with a receiving cavity 2021, and the cleaning member 300 extends to the inside of the roller part 10 through the receiving cavity 2021. The cleaning member 300 comprises a first cleaning pipeline 3000, a second cleaning pipeline 3001 and a spraying pipeline 3002, the first cleaning pipeline 3000 and the second cleaning pipeline 3001 pass through the receiving cavity 2021 respectively and are connected to two ends of the spraying pipeline 3002. In some embodiments, the support member 202 is a partially or wholly hollow shaft structure, the support member 202 is arranged on both sides of the rotating member 200, used to provide support force for the rotation of the roller part 10 and the rotating member 200, and meanwhile, the support member 202 can also reduce the avoiding size of the avoiding groove 201, so that the avoiding groove 201 only needs to match the size of the support member 202, thereby simplifying the complexity of the process.

[0036] As shown in the drawings, Figure 1 In some embodiments, the first cleaning pipeline 3000 and the second cleaning pipeline 3001 are connected to a cleaning liquid supply device, the first cleaning pipeline 3000 and the second cleaning pipeline 3001 enter the receiving cavity 2021 from the cleaning liquid supply device, and meanwhile, a plurality of avoiding holes 203 are formed on the support member 202 towards the inside of the roller part 10. In the embodiments of the present application, two pairs of avoiding holes 203 are formed on the support member 202 and are 180° apart in the vertical direction, the first cleaning pipeline 3000 and the second cleaning pipeline 3001 enter the roller part 10 through one pair of avoiding holes 203 respectively, the first cleaning pipeline 3000 is connected to the spraying pipeline 3002, the second cleaning pipeline 3001 continues to extend to the other pair of avoiding holes 203 in the roller part 10 and then passes through the other pair of avoiding holes 203 to connect to the spraying pipeline 3002 through the support member 202, and the two pairs of avoiding holes 203 are a certain distance apart, so that the cleaning liquid in the first cleaning pipeline 3000 and the cleaning liquid in the second cleaning pipeline 3001 perform water pressure counterattack at the spraying pipeline 3002, the water pressure counterattack keeps the pressure balance in the entire width direction, so that the cleaning liquid does not gradually attenuate in the width direction, the spraying pipeline 3002 is provided with uniformly distributed cleaning nozzle mounting holes on the surface, and the cleaning liquid can be sprayed from the cleaning nozzles of the spraying pipeline 3002 to the surface of the roller part 10 for cleaning. In order to accurately enter the receiving cavity 2021, the first cleaning pipeline 3000 and the second cleaning pipeline 3001 are provided with positioning blocks 304 at the positions of entering the support member 202.

[0037] In another embodiment, as shown in the drawings, Figure 2 Figure 2 ​is another embodiment of the composite roller structure diagram, the support 202 is provided with two holes 203 in the same direction. The first cleaning pipe 3000 enters the roller part 10 through one of the holes 203 and is connected with the spray pipe 3002, and the second cleaning pipe 3001 extends in the accommodating cavity 2021 of the support 202 until the other hole 203, and enters the roller part 10 through the other hole 203 and is connected with the spray pipe 3002, so as to form water pressure collision.

[0038] As shown in Figure 3 and Figure 4 , Figure 3 is Figure 1 embodiment A enlarged structure diagram, Figure 4 is Figure 1 embodiment B enlarged structure diagram, the rotating part 200 includes a first rotating part 2000 and a second rotating part 2001, the first rotating part 2000 is arranged on the side of the cleaning part 300 entering the roller part 10, and the second rotating part 2001 is arranged on the other side of the roller part 10 in the length direction, the second rotating part 2001 is a driving rotating part 200, and the first rotating part 2000 is a driven rotating part 200, the second rotating part 2001 rotates to drive the roller part 10 to rotate, so as to drive the first rotating part 2000 to rotate. In some embodiments, the second rotating part 2001 includes a bearing assembly 2001a, a second water blocking part 2001b and a second matching part 2001c, the second matching part 2001c is used for closing the end of the roller part 10, and the second matching part 2001c extends out of the second rotating matching part 2001d in the opposite direction of the support 202; the second rotating matching part 2001d can be but is not limited to a columnar structure, the bearing assembly 2001a is connected with the second rotating matching part 2001d, and the bearing assembly 2001a is connected with an external motor; the bearing assembly 2001a is used for enabling the motor to drive the roller part 10 to move without large movement; the second water blocking part 2001b is located on the side of the second matching part 2001c facing the support 202, because the roller part 10 is always in a spraying state, a large amount of washing water is moved to the rotating part 200 under the action of centrifugal force, if the sealing treatment is not made, the washing water enters the two sides of the rotating part 200, which is not conducive to the long-term use of the composite roller 1, the second water blocking part 2001b is used for sealing the second rotating part 2001, and the second water blocking part 2001b is partially connected with the support 202, so as to realize better water blocking effect.

[0039] In order to cooperate with the driving rotation of the second rotating part 2001, the first rotating part 2000 located at the other end of the roller part 10 can also smoothly cooperate with the first rotating part 2000 to rotate, in some embodiments, as shown in Figure 4As shown, the first rotating member 2000 comprises a first bearing 2000a, a first water blocking member 2000b, and a first matching member 2000c for closing with the end of the roller 10, while the first matching member 2000c extends in the opposite direction of the support member 202 as a first rotating matching member 2000d connected with the first bearing 2000a, while the first bearing 2000a is connected with the fixing member 301, the rotation of the roller 10 drives the rotation of the first rotating matching member 2000d, and the rotation of the first rotating matching member 2000d is transmitted to the first bearing 2000a, and the property of the bearing can make the rotation of the second rotating member 2001 transmitted to the first rotating member 2000 while the fixing member 301 does not rotate. The first water blocking member 2000b is used to seal the first rotating member 2000, and the first water blocking member 2000b is partially clamped with the support member 202 to achieve better water blocking effect.

[0040] As shown in Figure 3 In some embodiments, the first rotating member 2000 and the second rotating member 2001 are provided with accommodating grooves 2002 on the side facing the support member 202, the support member 202 extends from the accommodating groove 2002 of the first rotating member 2000 to the inside of the roller 10, the support member 202 extends into the accommodating groove 2002 of the second rotating member 2001 and does not contact with the accommodating groove 2002 of the second rotating member 2001. In some embodiments, part of the support member 202 is located in the accommodating groove 2002 of the first rotating matching member 2000d, when the support member 202 extends into the accommodating groove 2002 of the second rotating member 2001, the solid support fixing part 2022 extends out of the accommodating cavity 2021 of the support member 202, the accommodating groove 2002 of the second rotating member 2001 matches the size of the support fixing part 2022, and the size is smaller than the rod of the support member 202.

[0041] Because the roller 10 will continuously rotate at high speed, while the cleaning member 300 and the support member 202 need to be kept from large motion, the fixing member 301 is provided to prevent the cleaning member 300 and the support member 202 from moving with the rotating member 200, as shown in Figure 3 and Figure 4As shown, the fixing member 301 includes a first fixing member 302 and a second fixing member 303, and the second fixing member 303 is arranged between the support member 202 and the second water blocking member 2001b. The second fixing member 303 includes a stop member 3030, and the support member 202 is provided with a stop cooperating member 3031. The stop member 3030 and the stop cooperating member 3031 cooperate to prevent the second rotating member 2001 and the second water blocking member 2001b from driving the support member 202 to rotate. In some embodiments, the second fixing member 303 further includes a fixing base 3032, and a second bearing 3033 is arranged between the fixing base 3032 and the second water blocking member 2001b. The second bearing 3033 is used to rotate the second water blocking member 2001b with the rotation of the second rotating member 2001, while the second fixing member 303 does not rotate with the second rotating member 2001. The fixing base 3032 is provided with the stop member 3030, which can be but is not limited to a stop baffle. The support member 202 is provided with the stop cooperating member 3031, which can be but is not limited to a stop stop pin. The stop member 3030 and the stop cooperating member 3031 cooperate to prevent the cleaning member 300 and the support member 202 from moving with the rotating member 200.

[0042] As shown, Figure 3 The first rotating member 2000 and the support member 202 are provided with the first fixing member 302. The first fixing member 302 connects the first rotating member 2000 and the support member 202, and is used to provide support for the rotation of the first rotating member 2000, while preventing the support member 202 from rotating with the first rotating member 2000. In some embodiments, the first fixing member 302 includes a rotating base 3020, a housing 3021, and a sealing member 3022. The rotating base 3020 is connected to the first bearing 2000a. The first rotating cooperating member 2000d and the first bearing 2000a are located between the support member 202 and the rotating base 3020. The housing 3021 includes a bearing housing 3023, a shell 3024, and a dial 3025. The bearing housing 3023 connects the rotating base 3020 and the shell 3024. The shell 3024 is arranged on the outer side and protects the support member 202. The dial 3025 is arranged on the side of the shell 3024 opposite to the support member 202. The cleaning member 300 enters the containing cavity 2021 through the dial 3025 and the support member 202. The sealing member 3022 is located in the shell 3024 and the bearing housing 3023 and connects the support member 202. The sealing member 3022 can be but is not limited to a labyrinth ring. The sealing member 3022 is used to form a sealed and lubricated environment on one side close to the bearing housing 3023 and the first bearing 2000a, and forms a sealed environment on the other side with the shell 3024, preventing the flushing water from entering the hollow wall of the support member 202, thereby forming a sealed environment on the other side.

[0043] The above merely describes some embodiments of the present application, and does not limit the protection scope of the present application, and any equivalent device or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A composite roll characterized by, The utility model relates to a cleaning device for roll, including: Roll part; Rotary assembly, the roll part is arranged around the support, the rotary member is arranged at the end of roll part and is connected with roll part, and the rotary member is used to drive roll part to rotate around the support; Cleaning assembly, the cleaning member passes through the rotary member and enters the inside of roll part, and the cleaning member is used to release cleaning agent to the inside of roll part, and the fixed member is arranged at the end of support, and the fixed member is used to fix the cleaning member and make the cleaning member not rotate with the rotation of rotary member and roll part.

2. The composite roll of claim 1, wherein The rotary member is arranged around the support, and the support is provided with a containing cavity, and the cleaning member extends to the inside of roll part through the containing cavity.

3. The composite roll of claim 2, wherein, The cleaning member includes first cleaning pipeline, second cleaning pipeline and spray pipeline, and the first cleaning pipeline and the second cleaning pipeline pass through the containing cavity and are connected to both ends of the spray pipeline.

4. The composite roll of claim 3, wherein The cleaning liquid in the first cleaning pipeline and the cleaning liquid in the second cleaning pipeline are hydraulically offset in the spray pipeline.

5. The composite roll of claim 1 wherein, The rotary member includes first rotary member and second rotary member, the first rotary member is arranged at the side where the cleaning member enters roll part, and the second rotary member is arranged at the other side of the length direction of roll part, the second rotary member is a driving rotary member, the first rotary member is a driven rotary member, the second rotary member rotates and drives roll part to rotate, thereby driving the first rotary member to rotate.

6. The composite roll of claim 5 wherein, The rotary member also includes first water retaining member and second water retaining member, the first water retaining member is connected with the first rotary member, the second water retaining member is connected with the second rotary member, and the first water retaining member and the second water retaining member rotate with the rotation of roll part.

7. The composite roll of claim 5 wherein, The second rotary member is provided with a containing groove, the support extends to the inside of roll part from the first rotary member, and the support extends into the containing groove of the second rotary member and does not contact the containing groove.

8. The composite roll of claim 6 wherein, The fixed member includes first fixed member and second fixed member, the second fixed member is arranged between the support and the second water retaining member, the second fixed member includes a stopper, the support is provided with a stopper fitting part, and the stopper and the stopper fitting part are matched to prevent the second rotary member and the second water retaining member from driving the support to rotate.

9. The composite roll of claim 8, wherein, The first rotary member and the support are provided with the first fixed member, the first fixed member connects the first rotary member and the support, the first fixed member is used to support the rotation of the first rotary member, and the support does not rotate with the rotation of the first rotary member.

10. The composite roll of claim 9, wherein, The first fixed member includes a rotary base, an outer shell and a sealing member, the rotary base connects the first rotary member, and the first rotary member is located between the support and the rotary base; The outer shell connects the sealing member and the rotary base, the sealing member connects the support, and the sealing member is used to keep the rotation of the first rotary member smooth.

Images