An online papermaking dry blanket cleaning device
By designing an online papermaking dry blanket cleaning device, which utilizes the combination of jet and suction components, the problem of deposits accumulating on the dry blanket is solved, improving drying efficiency and equipment operational stability, and extending the service life of the dry blanket.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG HUAGANG PACKING MATERIALS
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-03
AI Technical Summary
The existing paper machine drying section lacks effective cleaning devices, which leads to the accumulation of deposits on the drying blanket, affecting drying efficiency and, in severe cases, causing paper damage and equipment malfunction.
An online papermaking dry blanket cleaning device was designed, including a housing, a jet assembly, and a dust collection assembly. The jet assembly cleans the dry blanket by swinging the jet pipe within a certain angle and spraying gas, while the dust collection assembly collects impurities, forming a closed cleaning space to avoid cleaning dead corners.
It achieves efficient cleaning of dry blankets, improves drying efficiency, extends the service life of dry blankets, simplifies equipment configuration, and reduces operating costs.
Smart Images
Figure CN224451256U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of papermaking equipment technology, specifically to an online papermaking dry blanket cleaning device. Background Technology
[0002] Papermaking felts are woven felts used in the papermaking industry for paper forming and conveying. The processing method involves first making a thin, coarse-mesh base fabric from synthetic fibers, then laying a mixed fiber web of synthetic fibers and a small amount of wool on top, followed by needle punching, chemical treatment, resin finishing, and heat setting. Papermaking felts are a valuable material in the papermaking industry, and can be divided into three main categories according to their use: wet felts, top felts, and dry felts. Dry felts are used in the drying sections of multi-cylinder paper machines and paperboard machines. The dry felts cover the drying cylinders and operate under both humid and dry conditions, serving to transfer paper sheets, drive the drying cylinders, and support the paper sheets, thereby improving heat transfer efficiency and paper flatness. Therefore, dry felts require high strength, high temperature resistance, a smooth surface, good air permeability, and dimensional stability. Currently, the papermaking dry felts in the drying sections of papermaking machines are not equipped with cleaning devices. Long-term accumulation of deposits on the papermaking dry felts can affect drying efficiency, and in severe cases, cause paper sheet damage, paper machine breakage, and equipment malfunction.
[0003] Inner liner paper is the main raw material used in the processing of cigarette inner liner paper. The appearance quality of the inner liner paper directly affects the stability of the quality of subsequent processing such as lamination, printing, and embossing of cigarette inner liner paper. How to effectively solve the quality defects of inner liner paper such as paper dust, felt fibers, and impurities, and improve the efficiency of cleaning and drying the felt during the production process of inner liner paper, has become an urgent problem to be solved. Summary of the Invention
[0004] To address the problems existing in the prior art, this utility model provides an online papermaking dry blanket cleaning device that can clean the dry blanket online, without dead angles, and with good cleaning effect.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] This utility model provides an online papermaking dry blanket cleaning device for cleaning dry blankets; it includes a housing adjustment cylinder, a housing, a dust suction assembly, a swing drive assembly, and a jet assembly.
[0007] The housing is slidably mounted on the frame and can move closer to or away from the dry blanket under the drive of the housing adjustment cylinder; the housing has a cleaning chamber, which has at least an opening facing the dry blanket; the upper side wall of the housing is provided with a rotating seat and a guide hole, the guide hole being arc-shaped and centered on the rotating seat;
[0008] The jet assembly includes a jet pipe, one end of which is fixedly provided with a rotating connecting shaft and a guide shaft. The rotating connecting shaft is rotatably connected to the rotating seat, and the guide shaft extends into the guide hole and slides with the guide hole. The jet pipe is located near the opening of the housing, and the jet pipe is provided with a plurality of jet holes, the air outlet of which faces the dry blanket.
[0009] The swing drive assembly includes a swing drive cylinder and a drive block. The drive block is slidably disposed on the housing. The drive block has a drive hole at a position corresponding to the guide hole. The drive hole is elongated and extends in the width direction of the dry blanket. The guide shaft extends upward into the drive hole. The piston rod of the swing drive cylinder is fixedly connected to the drive block. Pushing and pulling the drive block can drive the jet pipe to swing around the rotating connecting shaft.
[0010] The dust extraction assembly is located inside the cleaning chamber and is used to extract impurities.
[0011] In the above-mentioned online papermaking dry blanket cleaning device, the frame is provided with two first guide rails, which are spaced apart and parallel to each other; one end of the first guide rail is close to the dry blanket, and the other end extends away from the dry blanket.
[0012] The housing is located between the two first guide rails; a first slider is provided at the position of the housing corresponding to the first guide rail, and the first slider slides in cooperation with the first guide rail, thereby allowing the housing to slide closer to or away from the dry blanket.
[0013] In the above-mentioned online papermaking dry blanket cleaning device, the first guide rail is a dovetail guide rail.
[0014] In the above-mentioned online papermaking dry blanket cleaning device, the swing angle α of the jet pipe is 6°-15°.
[0015] In the above-mentioned online papermaking dry blanket cleaning device, the dust collection component includes a dust collection pipe that extends along the width direction of the dry blanket; the dust collection pipe has a dust collection channel on one side facing the dry blanket.
[0016] In the above-mentioned online papermaking dry blanket cleaning device, the dust collection assembly further includes a tube seat and a tube support rod. The dust collection tube is fixedly connected to the tube seat, and the tube support rod is fixed on the lower side wall of the housing with one end close to the dry blanket and the other end extending away from the dry blanket. The tube seat is slidably disposed on the tube support rod, and its position on the tube support rod is adjustable.
[0017] In the above-mentioned online papermaking dry blanket cleaning device, a plurality of the jet holes are spaced apart and evenly distributed along the length of the jet pipe.
[0018] The beneficial effects of this utility model are as follows:
[0019] The housing of the online papermaking dry blanket cleaning device, together with the dry blanket, forms a nearly enclosed cleaning space. The dust collection component and the air jet pipe are both located in the cleaning chamber inside the housing, so the cleaning operation has no impact on the surrounding environment. Driven by the swing drive component, the air jet pipe can swing within a certain angle, which can avoid the formation of cleaning dead zones by the spaced air jet holes. At the same time, the swinging air jet pipe can rinse the dry blanket at different angles, which helps to blow off the impurities on the dry blanket and further improve the cleaning effect.
[0020] The online papermaking dry blanket cleaning device uses gas as the medium for rinsing the dry blanket, minimizing its impact on surrounding equipment. Furthermore, the movement control of the housing and the oscillation of the jet pipes are also powered by gas, simplifying equipment configuration and reducing operating costs.
[0021] The position of the suction tube inside the housing is adjustable. You can choose to vacuum closer to the dry blanket as needed, or move it to clean the dust accumulated inside the housing.
[0022] The online papermaking dry blanket cleaning device has a simple structure, is easy to operate, and is fast and efficient. It is clean and hygienic, with excellent dust removal effect on the dry blanket, maximizing the performance of the dry blanket and extending its service life. Attached Figure Description
[0023] Figure 1 A front view showing the operational status of the online papermaking dry blanket cleaning device;
[0024] Figure 2 A three-dimensional structural diagram showing the usage status of an online papermaking dry blanket cleaning device;
[0025] Figure 3 A schematic diagram of the assembly structure of the online papermaking dry blanket cleaning device and its frame;
[0026] Figure 4 This is a schematic diagram of the jet pipe structure;
[0027] Figure 5 for Figure 2 Enlarged view of region A in the middle;
[0028] Figure 6 This is a schematic diagram showing the swing range of the jet nozzle;
[0029] Figure 7 This is a schematic diagram of the vacuum cleaner assembly.
[0030] In the picture:
[0031] 100 - First drying cylinder; 200 - Second drying cylinder; 300 - Dry blanket;
[0032] 400 - Online papermaking dry blanket cleaning device; 410 - Housing adjustment cylinder;
[0033] 420 - Housing; 421 - Upper sidewall; 422 - Guide hole; 423 - Rotating seat; 424 - First slider; 425 - Lower sidewall;
[0034] 430 - Vacuum assembly; 431 - Vacuum hose; 432 - Vacuum channel; 433 - Hose base; 434 - Hose support rod; 435 - Pin; 436 - Adjustment hole; 437 - Tightening screw;
[0035] 440 - Swing drive assembly; 441 - Swing drive cylinder; 442 - Drive block; 443 - Drive hole;
[0036] 450 - Jet assembly; 451 - Jet pipe; 452 - Jet orifice; 453 - Gas connection port; 454 - Rotary connecting shaft; 455 - Guide shaft; 456 - Nut sleeve;
[0037] 500 - Frame; 510 - First guide rail. Detailed Implementation
[0038] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0039] The drying section of a paper machine, such as Figure 1 and Figure 2 As shown, the system includes a frame 500, a first drying cylinder 100, and a second drying cylinder 200. The first drying cylinder 100 and the second drying cylinder 200 are rotatably mounted on the frame 500 and rotate under the drive of a drive device. A dry blanket 300 is wound around the first drying cylinder 100 and the second drying cylinder 200. An online papermaking dry blanket cleaning device 400 is installed on the frame 500 to perform online cleaning of the dry blanket 300. The online papermaking dry blanket cleaning device 400 is located on one side of the dry blanket 300 and performs online cleaning of the portion of the dry blanket 300 located between the first drying cylinder 100 and the second drying cylinder 200.
[0040] Specifically, such as Figure 2-7 As shown, the online papermaking dry blanket cleaning device 400 includes a housing adjustment cylinder 410, a housing 420, a dust suction assembly 430, a swing drive assembly 440, and an air jet assembly 450. The housing 420 is slidably mounted on the frame 500 and can move closer to or away from the dry blanket 300 under the drive of the housing adjustment cylinder 410. The dust suction assembly 430, the swing drive assembly 440, and the air jet assembly 450 are mounted on the housing 420 and move synchronously thereafter. During the cleaning operation of the dry blanket 300, the housing 420 moves closer to the dry blanket 300, and after cleaning is completed, the housing 420 moves away from the dry blanket 300.
[0041] For example, the frame 500 is provided with two first guide rails 510, which are spaced apart and parallel to each other. The first guide rails 510 are fixed to the frame 500, with one end close to the dry blanket 300 and the other end extending away from the dry blanket 300. The housing 420 is located between the two first guide rails 510; a first slider 424 is provided at a position corresponding to the first guide rail 510 on the housing 420. The first slider 424 is fixed integrally with the housing 420 and moves synchronously. The first slider 424 slides in engagement with the first guide rail 510, thereby allowing the housing 420 to slide closer to or away from the dry blanket 300.
[0042] Preferably, the first guide rail 510 is a dovetail guide rail, which can limit and support the first slider 424 and the housing 420 in multiple dimensions.
[0043] The housing adjustment cylinder 410 is located on the side of the housing 420 opposite to the dry blanket 300; the cylinder body is fixed on the frame 500, and the piston rod is fixedly connected to the housing 420; the position of the housing 420 can be controlled by controlling the extension and retraction of the piston rod of the housing adjustment cylinder 410. The housing 420 has a cleaning chamber, which has at least one opening facing the dry blanket 300.
[0044] The jet assembly 450 includes a jet pipe 451, which is mounted on the housing 420 and positioned near the opening of the housing 420. The jet pipe 451 has several jet holes 452, with the outlet ends of the jet holes 452 facing the dry blanket 300. Gas passes through the opening of the housing 420 and is sprayed onto the dry blanket 300. Nozzles can be installed on the jet holes 452; commercially available jet nozzles can be used. These nozzles, in conjunction with the jet pipe 451, spray gas onto the dry blanket 300, using pressurized gas to remove debris and impurities from the dry blanket 300, for example, with the gas pressure controlled at 0.1-1 MPa. Alternatively, gas can be sprayed directly onto the dry blanket 300 through the jet holes 452. The jet holes 452 are spaced apart and evenly distributed along the length of the jet pipe 451.
[0045] Furthermore, in order to improve the cleaning effect of the jet pipe 451 and avoid the existence of cleaning dead corners, the swing drive assembly 440 drives the jet pipe 451 to swing at a certain angle. For example, the upper side wall 421 of the housing 420 is provided with a rotating seat 423 and a guide hole 422; the guide hole 422 is arc-shaped and centered on the rotating seat 423. One end of the jet pipe 451 is fixedly provided with a rotating connecting shaft 454 and a guide shaft 455. The rotating connecting shaft 454 is rotatably connected to a rotating seat 423. For example, the rotating seat 423 has an axially extending through hole, through which the rotating connecting shaft 454 passes and can rotate relative to it. A nut sleeve 456 is provided at the upper end of the rotating connecting shaft 454, and a thrust bearing is provided between the nut sleeve 456 and the upper end face of the rotating seat 423. By using the cooperation of the rotating connecting shaft 454, the nut sleeve 456 and the rotating seat 423, not only can the vertical position of the jet pipe 451 be limited, but the jet pipe 451 can also rotate about the rotating connecting shaft 454 as the pivot. The guide shaft 455 extends into the guide hole 422 and slides with the guide hole 422. The guide hole 422 limits the rotation angle of the jet pipe 451; that is, the jet pipe 451 does not rotate 360°, but only swings back and forth within a set range. The rotating base 423 can be partially thickened on the upper sidewall 421 to ensure the stability of the jet pipe 451 during rotational installation.
[0046] The swing drive assembly 440 also includes a swing drive cylinder 441 and a drive block 442. The drive block 442 is slidably mounted on the housing 420. Wear-resistant and easily replaceable pads, guide rails, etc., can be provided between the drive block 442 and the housing 420 as needed to prevent wear on the housing 420 and improve the movement control accuracy of the drive block 442. This is prior art and is not shown in the accompanying drawings, so it will not be described in detail here. A drive hole 443 is provided at the position corresponding to the guide hole 422 on the drive block 442. The drive hole 443 is elongated and extends in the width direction of the dry blanket 300. The guide shaft 455 extends upward into the drive hole 443. The cylinder body of the swing drive cylinder 441 is fixed on the housing 420, and the piston rod is fixedly connected to the drive block 442.
[0047] In use, the jet pipe 451 covers the entire width of the dry blanket 300, parallel or nearly parallel to the dry blanket 300. The jet pipe 451 is configured with one end of the guide shaft 455 as the first end and the other end as the second end. The jet pipe 451 rotates around the rotating connecting shaft 454; when the swing drive cylinder 441 moves the drive block 442 closer to the dry blanket 300, the first end of the jet pipe 451 approaches the dry blanket, and the corresponding second end of the jet pipe 451 rotates away from the dry blanket 300; conversely, when the swing drive cylinder 441 moves the drive block 442 away from the dry blanket 300, the first end of the jet pipe 451 moves away from the dry blanket 300, and the corresponding second end of the jet pipe 451 rotates closer to the dry blanket 300. Figure 6As shown, the radiation range of a single jet nozzle 452 is fixed. When the jet pipe 451 oscillates within a certain range, it can avoid the existence of cleaning dead zones between two adjacent jet nozzles 452. At the same time, the relative angle between the jet pipe 451 and the dry blanket 300 changes when the jet pipe 451 oscillates, so the angle at which the gas is injected into the dry blanket 300 also changes. Injecting gas into the dry blanket 300 from different angles is more conducive to blowing off and removing impurities from the dry blanket 300. The oscillation angle α of the jet pipe 451 is preferably controlled between 6° and 15°.
[0048] During the movement of the dry blanket 300, the jet pipe 451 blows off impurities, dust, blanket fibers and other foreign objects from the surface of the dry blanket 300. The impurities blown off and away from the dry blanket 300 are confined together by the dry blanket 300 and the housing 420 within the cleaning chamber of the housing 420. The dust collection component 430 is located in the cleaning chamber and can collect and process the impurities.
[0049] Specifically, such as Figure 7 As shown, the vacuuming assembly 430 includes a vacuum tube 431 that extends along the width of the dry blanket 300. A vacuuming channel 432 is formed on the side of the vacuum tube 431 facing the dry blanket 300. The vacuum tube 431 can be fixed to the lower sidewall 425 of the housing 420 and is positioned near the opening. Preferably, the vacuuming assembly 430 also includes a tube seat 433 and a tube support rod 434. The vacuum tube 431 is fixedly connected to the tube seat 433, and the tube support rod 434 is fixed to the lower sidewall 425 of the housing 420 and extends in a direction perpendicular to the dry blanket 300, i.e., one end is close to the dry blanket 300, and the other end extends away from the dry blanket 300. The tube seat 433 is slidably disposed on the tube support rod 434, and its position on the tube support rod 434 is adjustable or fixed; for example, as... Figure 7 As shown, the tube support rod 434 is provided with multiple adjustment holes 436, and two pins 435 are used to block the tube seat 433 on opposite sides to limit its position; or, a tightening screw 437 can be provided on the tube seat 433, the tube seat 433 slides with the tube support rod 434 through a U-shaped groove, and the tightening screw 437 is threaded to the side wall of the U-shaped groove of the tube seat 433, the tightening screw 437 can press against the side wall of the tube support rod 434 extending along the length direction to fix the position of the tube seat 433; or, the pins 435 and the tightening screw 437 are provided at the same time, and the pins 435 and / or the tightening screw 437 are selected according to different working conditions.
[0050] The jet pipe 451 is provided with a gas communication port 453 for connecting to the air supply system; the housing adjustment cylinder 410 and the swing drive cylinder 441 are also connected to the air supply system, and the negative pressure fan can provide negative pressure suction to the suction pipe 431. The negative pressure fan and the air supply system are existing technologies, and this application has not made any improvements, so they are not shown in the attached drawings and will not be described in detail here.
[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An on-line papermaking dryer fabric cleaning device for cleaning a dryer fabric (300); characterized by, Includes a housing adjustment cylinder (410), a housing (420), a dust collection assembly (430), a swing drive assembly (440), and a jet assembly (450): The housing (420) is slidably mounted on the frame (500) and can move closer to or away from the dry blanket (300) under the drive of the housing adjustment cylinder (410); the housing (420) has a cleaning chamber, which has at least an opening facing the dry blanket (300); the upper side wall (421) of the housing (420) is provided with a rotating seat (423) and a guide hole (422), the guide hole (422) is arc-shaped and centered on the rotating seat (423); The jet assembly (450) includes a jet pipe (451), one end of which is fixedly provided with a rotating connecting shaft (454) and a guide shaft (455). The rotating connecting shaft (454) is rotatably connected to the rotating seat (423), and the guide shaft (455) extends into the guide hole (422) and slides with the guide hole (422). The jet pipe (451) is located near the opening of the housing (420), and the jet pipe (451) is provided with a plurality of jet holes (452). The air outlet end of the jet holes (452) faces the dry blanket (300). The swing drive assembly (440) includes a swing drive cylinder (441) and a drive block (442). The drive block (442) is slidably disposed on the housing (420). The drive block (442) is provided with a drive hole (443) corresponding to the position of the guide hole (422). The drive hole (443) is elongated and extends in the width direction of the dry blanket (300). The guide shaft (455) extends upward into the drive hole (443). The piston rod of the swing drive cylinder (441) is fixedly connected to the drive block (442). Pushing and pulling the drive block (442) can drive the jet pipe (451) to swing around the rotating connecting shaft (454). The vacuuming assembly (430) is located inside the cleaning chamber and is used to remove impurities.
2. An on-line papermakers' dryer fabric cleaning apparatus as claimed in claim 1, wherein, The frame (500) is provided with two first guide rails (510), which are spaced apart and parallel to each other; one end of the first guide rail (510) is close to the dry blanket (300), and the other end extends away from the dry blanket (300). The housing (420) is located between the two first guide rails (510); the housing (420) is provided with a first slider (424) at the position corresponding to the first guide rail (510), and the first slider (424) slides with the first guide rail (510) to allow the housing (420) to slide closer to or away from the dry blanket (300).
3. An on-line papermakers' dryer fabric cleaning apparatus as claimed in claim 2, wherein, The first guide rail (510) is a dovetail guide rail.
4. An on-line papermakers' dryer fabric cleaning apparatus as claimed in claim 1, wherein, The swing angle α of the jet pipe (451) is 6°-15°.
5. An on-line papermakers' dryer fabric cleaning apparatus as claimed in claim 1, wherein, The vacuuming assembly (430) includes a vacuum tube (431) that extends along the width of the dry blanket (300); the vacuum tube (431) has a vacuuming channel (432) on the side facing the dry blanket (300).
6. An on-line papermakers' dryer fabric cleaning apparatus as claimed in claim 5, wherein, The vacuuming assembly (430) also includes a tube seat (433) and a tube support rod (434). The vacuum tube (431) is fixedly connected to the tube seat (433). The tube support rod (434) is fixed on the lower side wall (425) of the housing (420) with one end close to the dry blanket (300) and the other end extending away from the dry blanket (300). The tube seat (433) is slidably disposed on the tube support rod (434) and its position on the tube support rod (434) is adjustable.
7. An on-line papermakers' dryer fabric cleaning apparatus as claimed in claim 1, wherein, Several of the jet holes (452) are spaced apart and evenly distributed along the length of the jet pipe (451).