A cleaning device for a pulp dryer

Abstract

The utility model relates to paper pulp drying cylinder cleaning technical field discloses a kind of cleaning devices for paper pulp drying cylinder, including, main component, including drying cylinder, the heating mechanism is arranged in drying cylinder side;Cleaning assembly is set in drying cylinder side, including cleaning part, the auxiliary part is arranged in cleaning part side;The cleaning part includes crosspiece, bristle is fixed on the crosspiece, the first scraper is arranged in crosspiece side, the first scraper bottom is fixed with connecting plate.The utility model has beneficial effect: two scrapers are additionally arranged on the basis of cleaning brush head, scraper hardness is different, the scraper of lower hardness can clean the light degree adhering of drying cylinder surface, and the influence on drying cylinder surface is less, while hard deposit is not scraped, and then lower hardness scraper is moved, trigger high-hardness scraper and drying cylinder surface contact, to remove surface hard deposit, avoid high-hardness scraper long time and drying cylinder surface contact, make drying cylinder surface wear.

Description

Technical Field

[0001] This utility model relates to the field of pulp drying cylinder cleaning technology, and in particular to a cleaning device for pulp drying cylinders. Background Technology

[0002] A pulp drying cylinder is typically a hollow metal cylinder with a precision-machined surface that provides excellent thermal conductivity. It heats and dries the pulp by introducing heat sources such as steam, causing the moisture to evaporate and achieving the required dryness. Resins, adhesives, fillers, or fiber clumps in the pulp tend to adhere to the cylinder surface during high-temperature drying, forming deposits. These deposits reduce the surface smoothness of the drying cylinder, affecting the uniformity of paper drying and even causing quality problems such as paper holes and breaks. Therefore, a brush is used to clean the cylinder surface. However, for hard deposits, a brush cannot remove them, requiring the use of a harder scraper. If the scraper remains in constant contact with the cylinder surface, it can damage the surface, further affecting the uniformity of paper drying. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above and / or existing cleaning devices for pulp drying cylinders, this utility model is proposed.

[0005] Therefore, the problem to be solved by this invention is the cleaning of hard deposits. If the scraper used is always in contact with the surface of the drying cylinder, the surface of the drying cylinder is easily damaged.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a cleaning device for a pulp drying cylinder, comprising a main component including a drying cylinder, wherein a heating mechanism is provided on one side of the drying cylinder;

[0007] A cleaning component is disposed on one side of the drying cylinder and includes a cleaning part, with an auxiliary part disposed on one side of the cleaning part;

[0008] The cleaning component includes a horizontal plate with bristles fixed on it. A first scraper is provided on one side of the horizontal plate, and a connecting plate is fixed to the bottom of the first scraper. A connecting block is fixed on one side of the horizontal plate, and a fixing block is fixed on the connecting block. A sliding groove is provided on the fixing block, and the connecting plate can slide in the sliding groove.

[0009] The auxiliary component includes a second scraper located below the first scraper. A movable block is fixed to the bottom of the second scraper, and a movable groove is provided in the fixed block. The movable block slides in the movable groove.

[0010] As a preferred embodiment of the cleaning device for the pulp drying cylinder of this utility model, a pressing block is fixed on the connecting plate, one side of the pressing block is inclined, a force groove is provided on the moving block, and the pressing block can slide in the force groove.

[0011] As a preferred embodiment of the cleaning device for the pulp drying cylinder of this utility model, a piston rod is fixed on one side of the moving block, a cavity is opened in the fixed block, a piston cylinder is fixed on the inner wall of the cavity, and a piston is fixed at one end of the piston rod.

[0012] In a preferred embodiment of the cleaning device for the pulp drying cylinder of this utility model, a first spring is fixed on one side of the moving block, and the other end of the first spring is fixed on the piston cylinder.

[0013] As a preferred embodiment of the cleaning device for the pulp drying cylinder of this utility model, the piston cylinder has a large hole, a support block is fixed on the inner wall of the piston cylinder, a rotating shaft is fixed on the support block, a baffle is rotatably connected to the rotating shaft, and a small hole is opened on the baffle.

[0014] In a preferred embodiment of the cleaning device for the pulp drying cylinder of this utility model, a torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring are respectively fixed to the support block and the baffle.

[0015] As a preferred embodiment of the cleaning device for the pulp drying cylinder of this utility model, an extension plate is fixed on one side of the connecting plate, a second spring is fixed on the extension plate, and the other end of the second spring is fixed to the fixing block.

[0016] In a preferred embodiment of the cleaning device for the pulp drying cylinder of this utility model, a support rod is fixed to the bottom of the fixing block, and a base is fixed to the bottom of the support rod.

[0017] In a preferred embodiment of the cleaning device for the pulp drying cylinder of this utility model, a collection frame is placed on the base.

[0018] As a preferred embodiment of the cleaning device for the pulp drying cylinder of this utility model, the extension plate is provided with a guide groove, and the fixed block is fixed with a guide column.

[0019] The beneficial effects of this utility model are as follows: Two scrapers with different hardness are added to the cleaning brush head. The scraper with lower hardness can clean the lightly adhered substances on the surface of the drying cylinder with less impact on the surface of the drying cylinder, while hard deposits will not be scraped off. This will push the scraper with lower hardness to move, triggering the scraper with higher hardness to contact the surface of the drying cylinder, thereby removing the hard deposits on the surface and avoiding prolonged contact between the scraper with higher hardness and the surface of the drying cylinder, which would cause wear on the surface of the drying cylinder. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 A structural diagram of the cleaning device for pulp drying cylinders.

[0022] Figure 2 Diagram of the brush structure for a cleaning device used in pulp drying cylinders.

[0023] Figure 3 A side view of the drying cylinder for a cleaning device used in pulp drying cylinders.

[0024] Figure 4 Cleaning device for pulp drying cylinders Figure 3 Enlarged view of the structure at point A in the middle.

[0025] Figure 5 A structural diagram of the first scraper of a cleaning device for a pulp drying cylinder.

[0026] Figure 6 Cleaning device for pulp drying cylinders Figure 5 Enlarged view of the structure at point B in the middle.

[0027] Figure 7 Cleaning device for pulp drying cylinders Figure 5 Enlarged view of the structure at point C.

[0028] Figure 8 Cross-sectional view of the piston cylinder of a cleaning device for pulp drying cylinders.

[0029] Figure 9 Cleaning device for pulp drying cylinders Figure 8 Enlarged view of the structure at point D. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0033] Example 1

[0034] Reference Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a cleaning device for a pulp drying cylinder. The cleaning device for a pulp drying cylinder includes a main component 100, including a drying cylinder 101. A heating mechanism 102 is provided on one side of the drying cylinder 101. A heating device is provided inside the drying cylinder 101. Through the cooperation of the heating mechanism 102, the pulp is heated and dried, so that the moisture in the pulp evaporates, thereby achieving the specified dryness requirement. This is the prior art, and this solution will not be described in detail. Moreover, those skilled in the art can clearly understand the working principle.

[0035] The cleaning component 200 is disposed on one side of the drying cylinder 101 and includes a cleaning component 201. The cleaning component 201 is used to clean soft deposits attached to the surface of the drying cylinder 101. An auxiliary component 202 is disposed on one side of the cleaning component 201, which is used to clean hard deposits.

[0036] The cleaning component 201 includes a horizontal plate 2011, on which bristles 2012 are fixed. There are multiple bristles 2012, which are always in contact with the surface of the drying cylinder 101 for initial cleaning of the surface of the drying cylinder 101. A first scraper 2013 is provided on one side of the horizontal plate 2011. The first scraper 2013 has low hardness and continuously contacts the surface of the drying cylinder 101 with light pressure. Due to its low hardness and low contact pressure, the first scraper 2013 causes almost no wear to the surface of the drying cylinder 101 and is used to scrape soft deposits off the surface of the drying cylinder 101 to ensure cleaning effect. During cleaning, the drying cylinder 101 does not need to be stopped and maintains a clockwise rotation state as shown in the figure.

[0037] The bottom of the first scraper 2013 is fixed with a connecting plate 2014, which is used to drive the first scraper 2013 to move. A connecting block 2015 is fixed on one side of the horizontal plate 2011, and a fixing block 2016 is fixed on the connecting block 2015. The fixing block 2016 provides support for the auxiliary component 202. The connecting block 2015 connects the horizontal plate 2011 and the fixing block 2016.

[0038] The fixed block 2016 is provided with a sliding groove 2016-1, and the connecting plate 2014 can slide in the sliding groove 2016-1. After the hard deposit comes into contact with the first scraper 2013, the first scraper 2013 has limited hardness and cannot produce the hard deposit. The hard deposit will squeeze the first scraper 2013, causing the first scraper 2013 to move in the sliding groove 2016-1.

[0039] The auxiliary component 202 includes a second scraper 2021 located below the first scraper 2013. The second scraper 2021 has high hardness and can scrape hard deposits off the surface of the drying cylinder 101. In the initial state, the second scraper 2021 is away from the surface of the drying cylinder 101. Only when the hard deposits squeeze the first scraper 2013, causing the first scraper 2013 to move, will the second scraper 2021 be triggered to come closer to the surface of the drying cylinder 101, thereby scraping off the hard deposits. This ensures the cleaning effect and avoids continuous contact between the second scraper 2021 and the surface of the drying cylinder 101, thus reducing friction on the surface.

[0040] The bottom of the second scraper 2021 is fixed with a movable block 2022, which is used to drive the second scraper 2021 to move. The fixed block 2016 has a movable groove 2016-2, and the movable block 2022 slides in the movable groove 2016-2.

[0041] Example 2

[0042] Reference Figures 3-9 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0043] Specifically, a pressing block 2023 is fixed on the connecting plate 2014. One side of the pressing block 2023 is inclined. A force-receiving groove 2022-1 is opened on the moving block 2022. The pressing block 2023 can slide in the force-receiving groove 2022-1. When the hard deposits press the first scraper 2013, causing the first scraper 2013 to move in the sliding groove 2016-1, the connecting plate 2014 will move synchronously, which will drive the pressing block 2023 to move downward. The pressing block 2023 will press the force-receiving groove 2022-1, thereby causing the moving block 2022 to move closer to the drying cylinder 101, and then causing the second scraper 2021 to contact the surface of the drying cylinder 101, thus scraping off the hard deposits.

[0044] The inclined angle of the extrusion block 2023 is small, so that when the first scraper 2013 moves a small distance, it can trigger the second scraper 2021 to contact the surface of the drying cylinder 101.

[0045] Specifically, a piston rod 2024 is fixed to one side of the movable block 2022, and a cavity 2016-3 is opened inside the fixed block 2016. The cavity 2016-3 communicates with the outside of the fixed block 2016. A piston cylinder 2027 is fixed to the inner wall of the cavity 2016-3, and a piston 2028 is fixed to one end of the piston rod 2024. The piston rod 2024, the piston 2028, and the piston cylinder 2027 together constitute a "piston structure" to delay the reset speed of the second scraper 2021, thereby ensuring that the hard deposits can be scraped off.

[0046] When the extrusion block 2023 pushes the extrusion block 2023 to move closer to the drying cylinder 101, the moving block 2022 will simultaneously drive the piston 2028 to move inside the piston cylinder 2027.

[0047] Specifically, a first spring 2029 is fixed on one side of the movable block 2022, and the other end of the first spring 2029 is fixed on the piston cylinder 2027. The first spring 2029 applies a continuous pulling force to the movable block 2022 to ensure that the second scraper 2021 is located away from the surface of the drying cylinder 101 when no other external force is applied. The first spring 2029 is also used for resetting the movable block 2022.

[0048] Specifically, the piston cylinder 2027 has a large hole 2027-1, and a support block 20210 is fixed to the inner wall of the piston cylinder 2027. A rotating shaft 20211 is fixed to the support block 20210, and a baffle 20212 is rotatably connected to the rotating shaft 20211. The size of the baffle 20212 is larger than the size of the large hole 2027-1, and a small hole 20212-1 is opened on the baffle 20212. The small hole 20212-1 is smaller in size. By setting the baffle 20212, the resistance of the piston 2028 when moving in the piston cylinder 2027 is controlled, so that the hard deposits come into contact with the first scraper 2013 as the drying cylinder 101 rotates, causing the first scraper 2013 to move. At this time, the second scraper 2021 moves quickly and comes into contact with the surface of the drying cylinder 101. When the hard deposits separate from the first scraper 2013, the second scraper 2021 can slowly return to its original position, thus ensuring that the hard deposits can be scraped off.

[0049] Specifically, a torsion spring 20213 is fitted on the rotating shaft 20211. The two ends of the torsion spring 20213 are fixed to the support block 20210 and the baffle 20212 respectively. The torsion spring 20213 ensures that it can fit against the inner wall of the piston cylinder 2027 without any other external force. At this time, the piston cylinder 2027 is connected to the outside through the small hole 20212-1.

[0050] When the moving block 2022 moves closer to the drying cylinder 101, the piston 2028 moves away from the baffle 20212. A negative pressure will be generated between the piston 2028 and the baffle 20212. Under the action of atmospheric pressure, the baffle 20212 will rotate and open, and the torsion spring 20213 will be compressed. At this time, the piston cylinder 2027 is connected to the outside through the large hole 2027-1. The movement resistance of the piston 2028 is small, so that the movement of the first scraper 2013 can quickly bring the second scraper 2021 close to the drying cylinder 101, thereby cleaning the hard deposits.

[0051] After the hard deposits separate from the first scraper 2013 and the squeezing block 2023 stops squeezing the force groove 2022-1 of the moving block 2022, the moving block 2022 will reset under the action of the first spring 2029 and move away from the drying cylinder 101. At this time, under the action of the airflow and the reset of the torsion spring 20213, the baffle 20212 closes, and the piston cylinder 2027 communicates with the outside through the small hole 20212-1. At this time, the resistance of the piston 2028 is large, so the reset speed of the second scraper 2021 is slow, thus ensuring that the hard deposits can be cleaned.

[0052] Example 3

[0053] Reference Figures 1-9 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0054] Specifically, an extension plate 2017 is fixed to one side of the connecting plate 2014, and a second spring 2018 is fixed to the extension plate 2017. The other end of the second spring 2018 is fixed to the fixing block 2016. The extension plate 2017 and the second spring 2018 ensure that the first scraper 2013 can contact the surface of the drying cylinder 101 without other external forces. The second spring 2018 has a large elasticity. Only when very hard deposits rotate with the drying cylinder 101 can the second spring 2018 be compressed, thereby triggering the movement of the second scraper 2021. The second spring 2018 is also used for the reset of the first scraper 2013.

[0055] Specifically, a support rod 2019 is fixed to the bottom of the fixing block 2016, and a base 20110 is fixed to the bottom of the support rod 2019. The base 20110 provides stable support for the entire cleaning assembly 200, and the support rod 2019 is used to connect the fixing block 2016 and the base 20110.

[0056] Specifically, a collection frame 20111 is placed on the base 20110. The sediment cleaned by the brush 2012, the first scraper 2013 and the second scraper 2021 will fall into the collection frame 20111. After a period of time, the collection frame 20111 can be removed and the collected sediment can be centrally processed.

[0057] Specifically, the extension plate 2017 has a guide groove 2017-1, and the fixing block 2016 has a guide post 20112 fixed on it. The guide post 20112 is inserted into the guide groove 2017-1. Through the cooperation of the two, the connecting plate 2014 and the first scraper 2013 can move smoothly.

[0058] During use, the drying cylinder 101 rotates normally, and the brush 2012 and the first scraper 2013 can clean the soft deposits attached to the surface of the drying cylinder 101. When hard deposits are attached to the surface of the drying cylinder 101, the brush 2012 and the first scraper 2013 cannot clean them. At this time, the hard deposits will exert a downward pushing force on the first scraper 2013, causing the second spring 2018 to compress. The connecting plate 2014 will move synchronously, which will drive the pressing block 2023 to move downward. The pressing block 2023 will press the force groove 2022-1, thereby causing the moving block 2022 to move closer to the drying cylinder 101. The moving block 2022 will synchronously drive the piston 2028 to move inside the piston cylinder 2027.

[0059] When the moving block 2022 moves closer to the drying cylinder 101, the piston 2028 moves away from the baffle 20212. A negative pressure is generated between the piston 2028 and the baffle 20212, and under atmospheric pressure, the baffle 20212 rotates open, compressing the torsion spring 20213. At this time, the piston cylinder 2027 communicates with the outside through the large hole 2027-1. The movement resistance of the piston 2028 is relatively small, allowing the first scraper 2013 to quickly bring the second scraper 2021 closer to the drying cylinder 101, thereby cleaning the hard deposits. After the hard deposits separate from the first scraper 2013 and the squeezing block 2023 stops squeezing the force groove 2022-1 of the moving block 2022, the moving block 2022 will reset under the action of the first spring 2029 and move away from the drying cylinder 101. At this time, under the action of the airflow and the reset of the torsion spring 20213, the baffle 20212 closes, and the piston cylinder 2027 communicates with the outside through the small hole 20212-1. At this time, the resistance of the piston 2028 is large, so the reset speed of the second scraper 2021 is slow, thus ensuring that the hard deposits can be cleaned.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cleaning device for a pulp drying cylinder, characterized in that: include, The main component (100) includes a drying cylinder (101), and a heating mechanism (102) is provided on one side of the drying cylinder (101). A cleaning component (200) is disposed on one side of the drying cylinder (101) and includes a cleaning element (201), wherein an auxiliary element (202) is disposed on one side of the cleaning element (201). The cleaning component (201) includes a horizontal plate (2011), on which bristles (2012) are fixed. A first scraper (2013) is provided on one side of the horizontal plate (2011), and a connecting plate (2014) is fixed to the bottom of the first scraper (2013). A connecting block (2015) is fixed on one side of the horizontal plate (2011), and a fixing block (2016) is fixed on the connecting block (2015). A sliding groove (2016-1) is provided on the fixing block (2016), and the connecting plate (2014) can slide in the sliding groove (2016-1). The auxiliary component (202) includes a second scraper (2021) located below the first scraper (2013). A movable block (2022) is fixed at the bottom of the second scraper (2021). A movable groove (2016-2) is provided in the fixed block (2016), and the movable block (2022) slides in the movable groove (2016-2).

2. The cleaning device for pulp drying cylinders as described in claim 1, characterized in that: A pressing block (2023) is fixed on the connecting plate (2014). One side of the pressing block (2023) is inclined. A force groove (2022-1) is opened on the moving block (2022). The pressing block (2023) can slide in the force groove (2022-1).

3. The cleaning device for pulp drying cylinders as described in claim 1 or 2, characterized in that: A piston rod (2024) is fixed on one side of the movable block (2022), a cavity (2016-3) is opened in the fixed block (2016), a piston cylinder (2027) is fixed on the inner wall of the cavity (2016-3), and a piston (2028) is fixed at one end of the piston rod (2024).

4. The cleaning device for pulp drying cylinders as described in claim 3, characterized in that: A first spring (2029) is fixed on one side of the movable block (2022), and the other end of the first spring (2029) is fixed on the piston cylinder (2027).

5. The cleaning device for pulp drying cylinders as described in claim 4, characterized in that: The piston cylinder (2027) has a large hole (2027-1), and a support block (20210) is fixed on the inner wall of the piston cylinder (2027). A rotating shaft (20211) is fixed on the support block (20210), and a baffle (20212) is rotatably connected to the rotating shaft (20211). A small hole (20212-1) is opened on the baffle (20212).

6. The cleaning device for pulp drying cylinders as described in claim 5, characterized in that: A torsion spring (20213) is fitted on the rotating shaft (20211), and the two ends of the torsion spring (20213) are fixed to the support block (20210) and the baffle (20212) respectively.

7. The cleaning device for pulp drying cylinders as described in claim 5 or 6, characterized in that: An extension plate (2017) is fixed to one side of the connecting plate (2014), and a second spring (2018) is fixed on the extension plate (2017). The other end of the second spring (2018) is fixed to the fixing block (2016).

8. The cleaning device for pulp drying cylinders as described in claim 7, characterized in that: The bottom of the fixing block (2016) is fixed with a support rod (2019), and the bottom of the support rod (2019) is fixed with a base (20110).

9. The cleaning device for pulp drying cylinders as described in claim 8, characterized in that: A collection box (20111) is placed on the base (20110).

10. The cleaning device for pulp drying cylinders as described in claim 8 or 9, characterized in that: The extension plate (2017) is provided with a guide groove (2017-1), and the fixing block (2016) is fixed with a guide post (20112).

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