Cleaning equipment for sizing scraping rod

Abstract

The invention provides cleaning equipment for a sizing scraping rod. The cleaning equipment comprises a support, a cleaning device, a moving device and a rotating device. The moving device is connected with the support, the cleaning device is fixedly connected with the moving device, the cleaning device can be driven by the moving device to move in a reciprocating mode in the axial direction of the to-be-cleaned sizing scraping rod so that the to-be-cleaned sizing scraping rod can be cleaned, and the rotating device is connected with the support and used for driving the to-be-cleaned sizing scraping rod to rotate along the axis. According to the cleaning equipment, aiming at the three major pain points of incomplete coverage, stubborn residual glue and tedious operation caused by traditional cleaning in the production process of the sizing scraping rod, 360-degree dead-angle-free coverage of scraping rod grooves can be achieved through the structural scheme of a rotating and reciprocating two-dimensional cleaning mode, the residual glue removal rate is increased to 99% or above, the problem of cleaning of the sizing scraping rod is fundamentally solved, and the production efficiency is improved. On-machine cleaning can be achieved, the problem of efficient recycling of the sizing scraping rod is solved, and the cleaning equipment has the advantages of being simple in structure, low in maintenance cost and the like.

Description

Technical Field

[0001] This application relates to the technical field of papermaking auxiliary equipment, specifically to a cleaning device for sizing scrapers. Background Technology

[0002] In the papermaking industry, the sizing process is a core step in improving the surface properties of paper. The sizing doctor blade, as the key component in this process, directly determines crucial indicators such as paper smoothness, water resistance, and printability. Its main body is a slender metal rod (1.5-3 meters in length, 30-50 mm in diameter) with spiral or straight microgrooves (0.1-0.5 mm deep) on its surface. Through the "scraping effect" when in contact with the sizing agent, it precisely controls the sizing layer thickness (accuracy ±0.1 g / m²), ensuring uniform sizing on the paper surface. The cleanliness and surface integrity of the sizing doctor blade directly affect production stability, making it a critical tool in the production of high-end packaging paper and cultural paper.

[0003] Currently, the cleaning and maintenance of adhesive scrapers still heavily relies on manual operation, becoming a major bottleneck restricting production efficiency. Manual cleaning requires 2-3 people working together, using high-pressure water guns or wire brushes for repeated rinsing, taking 30-60 minutes per session (taking a 3-meter-long scraper as an example). Because the groove depth is only 0.1-0.5 mm, adhesives (starch glue, latex) easily accumulate at the bottom of the groove. Manual rinsing can only remove surface adhesive, with a residual adhesive removal rate of less than 70%. This leads to uneven adhesive application when the scraper is reused (yield decrease of 3%-5%), and accelerated wear due to residual adhesive (lifespan of only 2-3 months), resulting in annual procurement costs exceeding one million yuan. Furthermore, cleaning requires machine shutdown, accumulating over 200 hours of downtime annually, resulting in significant capacity loss.

[0004] Although some companies have attempted to introduce automated cleaning equipment, existing solutions still suffer from several technical bottlenecks. Firstly, poor support stability: The slender scraper (length-to-diameter ratio ≥30:1) sags under gravity during cleaning, and its rotation or movement causes a jump of ≥2 mm, resulting in fluctuations in the distance between the nozzle and the scraper, leading to incomplete cleaning coverage (blind spot rate ≥10%). Secondly, limited cleaning modes: Most general-purpose equipment uses a "fixed nozzle + unidirectional movement" mode, which cannot adapt to the spiral distribution of grooves, resulting in low adhesive removal efficiency (residual adhesive removal rate ≤85%). Thirdly, insufficient adaptability: It only supports a single scraper specification (e.g., length ≤2 meters), and changeover and debugging take more than 30 minutes. Fourthly, high maintenance costs: The nozzle is easily clogged by adhesive particles (particle size ≥0.5 mm), requiring more than 50 hours of maintenance per year, resulting in low equipment utilization. Summary of the Invention

[0005] This application provides a cleaning device for a squeegee, the cleaning device including: a support, a cleaning device, a moving device, and a rotating device; the moving device is connected to the support, the cleaning device is fixedly connected to the moving device, the cleaning device can reciprocate along the axial direction of the squeegee to be cleaned under the drive of the moving device, thereby cleaning the squeegee to be cleaned, and the rotating device is connected to the support and is used to drive the squeegee to be cleaned to rotate along the axis.

[0006] In some alternative embodiments, the mobile device includes a first drive motor and a transmission chain, the cleaning device is fixedly connected to the transmission chain, and the first drive motor drives the cleaning device to move through the transmission chain.

[0007] In some alternative embodiments, the cleaning device includes a connecting assembly and a spray unit, the spray unit being connected to the connecting assembly, the connecting assembly being fixedly connected to the drive chain; the spray unit is connected to an external water supply device.

[0008] In some optional embodiments, the connecting assembly includes a connecting plate and an adjusting unit. The connecting plate is fixedly connected to the transmission chain, and the adjusting unit is connected to both the connecting plate and the spraying unit. The adjusting unit is used to adjust the height of the spraying unit.

[0009] In some optional embodiments, the adjustment unit includes an adjustment vertical rod, an adjustment horizontal rod, a connecting block, and an adjustment nut. The spraying unit is fixedly connected to one end of the adjustment horizontal rod. The adjustment vertical rod is connected to the adjustment horizontal rod through the adjustment block. The adjustment vertical rod passes through the connecting plate. The adjustment nuts are respectively located on opposite sides of the connecting plate and screwed to the adjustment vertical rod.

[0010] In some optional embodiments, the spray unit has a liquid flow channel in the middle, and a plurality of nozzles are evenly distributed along the extension direction of the liquid flow channel, and the plurality of nozzles are respectively connected to the liquid flow channel.

[0011] In some optional embodiments, the rotating device includes a second drive motor and a coupling, wherein the second drive motor is connected to the end of the squeegee to be cleaned through the coupling, and the second drive motor drives the squeegee to be cleaned to rotate along the axis through the coupling.

[0012] In some optional embodiments, the cleaning equipment further includes a fixing device fixed to the bracket. The fixing device is used to assist in clamping and fixing the sealing element outside the squeegee to be cleaned, and the squeegee to be cleaned can rotate relative to the sealing element.

[0013] In some alternative embodiments, the fixing device includes a support, a drive cylinder, and a clamp, the drive cylinder being fixed to the support and capable of driving the clamp to open or close, thereby clamping or releasing the seal.

[0014] In some optional embodiments, the clamp includes a first clamping block and a second clamping block, the first clamping block being fixedly connected to the support member, the second clamping block being connected to the piston rod of the drive cylinder and being able to move away from or closer to the first clamping block under the drive of the piston rod, and the sealing member being clamped between the first clamping block and the second clamping block.

[0015] The cleaning equipment for the squeegee provided in this application addresses three major pain points in the production process of squeegees: incomplete coverage, stubborn adhesive residue, and cumbersome operation. Through a structural solution of a dual-dimensional cleaning mode of "rotation + reciprocating", it can achieve 360° coverage of the grooves of the squeegee without dead angles, and improve the adhesive removal rate to over 99%. This fundamentally solves the problem of cleaning squeegees, enables on-machine cleaning, and solves the problem of efficient recycling of squeegees. The cleaning equipment is characterized by simple structure and low maintenance cost. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view schematic diagram of an embodiment of the cleaning device for the adhesive scraper of this application; Figure 2 yes Figure 1 A side view of the cleaning equipment in the embodiment; Figure 3 This is a schematic diagram of the cleaning device in this embodiment; Figure 4 yes Figure 3 A cross-sectional view of the cleaning device along line AA in the embodiment; Figure 5 This is a cross-sectional structural schematic diagram of an embodiment of the spray unit of this application; Figure 6 This is a schematic diagram of the fixing device in this embodiment; Figure 7 yes Figure 6 A top view of the fixing device in the embodiment. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0019] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] This application provides a cleaning device for a glue applicator scraper, please refer to the following embodiments as well. Figure 1 and Figure 2 , Figure 1 This is a front view schematic diagram of an embodiment of the cleaning device for the adhesive scraper of this application. Figure 2 yes Figure 1 The side view of the cleaning device in the embodiment is shown in the schematic diagram. The cleaning device 10 includes, but is not limited to, the following structures: support 100, cleaning device 200, moving device 300 and rotating device 400.

[0022] Specifically, the bracket 100 may include multiple vertical beams and horizontal beams, etc., which are described here as an assembly. The bracket 100 is used to contact the ground 001 and to connect with other structures that support and fix the cleaning equipment.

[0023] The moving device 300 is connected to the bracket 100, and the cleaning device 200 is fixedly connected to the moving device 300. The cleaning device 200 can reciprocate along the axial direction (arrow X direction in the figure) of the squeegee 88 to be cleaned under the drive of the moving device 300, thereby cleaning the squeegee 88 to be cleaned. The rotating device 400 is connected to the bracket and is used to drive the squeegee 88 to be cleaned to rotate along the axis.

[0024] Alternatively, please continue reading Figure 1 In this embodiment, the mobile device 300 includes a first drive motor 310 and a transmission chain 320. The cleaning device 200 is fixedly connected to the transmission chain 320. The first drive motor 310 drives the cleaning device 200 to reciprocate along the X direction in the figure via the transmission chain 320. Other auxiliary transmission components of the mobile device 300 are within the understanding of those skilled in the art and will not be described in detail here.

[0025] Please refer to the following: Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the cleaning device in this embodiment. Figure 4 yes Figure 3 The embodiment shows a cross-sectional view of the cleaning device along line AA. The cleaning device 200 includes a connecting component 210 and a spraying unit 220. The spraying unit 220 is connected to the connecting component 210, and the connecting component 210 is fixedly connected to the transmission chain 320 of the moving device 300. The spraying unit 220 is connected to an external water supply device and is used to spray water onto the squeegee 88 to be cleaned in order to clean the squeegee 88.

[0026] Optionally, the connecting component 210 in this embodiment includes a connecting plate 211 and an adjusting unit 212. The connecting plate 211 is fixedly connected to the transmission chain 320. The adjusting unit 212 is connected to the connecting plate 211 and the spraying unit 220 respectively. The adjusting unit 212 is used to adjust the height of the spraying unit 220, thereby adjusting the distance between the spraying unit 220 and the adhesive scraper 88 to be cleaned.

[0027] Optionally, the adjustment unit 212 in this embodiment includes an adjustment vertical rod 2121, an adjustment horizontal rod 2122, a connecting block 2123, and an adjustment nut 2124. The spray unit 220 is fixedly connected to one end of the adjustment horizontal rod 2122. The adjustment vertical rod 2121 is connected to the adjustment horizontal rod 2122 through the adjustment block 2123. The adjustment horizontal rod 2122 adjusts the position of the spray unit 220 in the direction of arrow Y in the figure by changing the connection position with the adjustment block 2123.

[0028] The adjusting vertical rod 2121 is set through the connecting plate 211. The adjusting vertical rod 2121 is a threaded rod. The adjusting nuts 2124 are respectively set on the opposite sides of the connecting plate 211 and screwed to the adjusting vertical rod 2121. By adjusting the position of the upper and lower adjusting nuts 2124, the height (Z direction in the figure) of the spray unit 220 can be adjusted.

[0029] Optionally, to enhance stability and reliability, both the adjusting vertical rod 2121 and the adjusting horizontal rod 2122 in this embodiment may include two parallel rods.

[0030] Please see Figure 5 , Figure 5 This is a cross-sectional structural diagram of an embodiment of the spray unit of this application. In this embodiment, the spray unit 220 has a liquid flow channel 2200 in the middle. One end of the liquid flow channel 2200 is connected to an external water supply device (including a water pump and water pipes, etc.) via a connecting ring 222, while the other end can be sealed. Multiple nozzles 221 are evenly distributed along the extension direction of the liquid flow channel 2200, each connected to the liquid flow channel 2200. These nozzles are used to spray water streams or water mist, thereby cleaning the adhesive scraper 88 to be cleaned. High-pressure cleaning uses a spiral nozzle arrangement (50mm spacing, 15° angle) to simulate the spiral direction of the scraper grooves (common spiral angle 10-20°), ensuring the high-pressure water flow is aligned with the groove direction, thus improving residual adhesive removal efficiency (30% higher than vertical spraying). A Y-type filter (50μm precision) is added to the water inlet of the spray unit 220 to prevent particulate matter from clogging the nozzles.

[0031] Alternatively, please continue reading Figure 1 In this embodiment, the rotating device 400 includes a second drive motor 410 and a coupling 420, wherein the coupling 420 can be a universal joint. The second drive motor 410 is connected to the end of the adhesive scraper 88 to be cleaned through the coupling 420, and the second drive motor 410 drives the adhesive scraper 88 to be cleaned to rotate along the axis through the coupling 420.

[0032] Please refer to the following: Figure 1 , Figure 6 as well as Figure 7 , Figure 6This is a schematic diagram of the fixing device in this embodiment. Figure 7 yes Figure 6 The top view of the fixing device in the embodiment shows that, optionally, the cleaning device 10 in this embodiment also includes a fixing device 500, which is fixed to the bracket 100. The fixing device 500 can be one or more, and is evenly distributed along the axial direction of the adhesive scraper 88 to be cleaned.

[0033] The fixing device 500 is used to assist in clamping and fixing the sealing element 87 covering the outer sleeve of the adhesive scraper 88 to be cleaned. The adhesive scraper 88 to be cleaned can rotate relative to the sealing element 87. The sealing element 87 is the core component to ensure material feeding, and the adhesive scraper is used to distribute the adhesive evenly. During normal use, the sealing element 87 is fixed, and the adhesive scraper rotates. Therefore, the structure of the fixing device 500 is designed by utilizing the non-moving sealing element 87.

[0034] Optionally, the fixing device 500 in this embodiment includes a support member 510, a drive cylinder 520, and a clamp 530. The drive cylinder 520 is fixed to the support member 510. The support member 510 is used to fix the bracket 100. The drive cylinder 520 can drive the clamp 530 to open or close, thereby clamping or releasing the seal 87.

[0035] In one embodiment, the clamp 530 may include a first clamping block 531 and a second clamping block 532. The first clamping block 531 is fixedly connected to the support member 510, and the second clamping block 532 is connected to the piston rod 521 of the drive cylinder 520, and can move away from or towards the first clamping block 531 under the drive of the piston rod 521 (along...). Figure 6 (In the direction of the middle arrow), the seal 87 can be clamped between the first clamping block 531 and the second clamping block 532. The mating surface structure of the first clamping block 531 and the second clamping block 532 is adapted to the contour of the seal 87 and can be replaced; no specific limitation is made here. In addition, the cleaning device in this embodiment may also include structures such as an air source for driving the drive cylinder 520.

[0036] In addition, the cleaning equipment in this embodiment may also include a control device (not shown in the figure). The control device is also the core of the automatic cleaning equipment for the adhesive scraper. It consists of a PLC control system, a control panel, supporting air supply, supporting high and low voltage electrical components, various sensors, control valves, etc. After the scraper parameters are input through the control panel, the system automatically calculates and controls parameters such as the rotation speed of the scraper, the moving speed of the cleaning unit, and the pressure of the high-pressure water through the PLC. The distance between the nozzle and the adhesive scraper to be cleaned is controlled by manually adjusting the cleaning adjustment bracket (adjustment unit) (optionally, an automatic adjustment can be designed using a pneumatic device, but its stability is weaker and the cost is higher than that of a mechanical structure, so manual adjustment is preferred). Subsequently, the adhesive scraper to be cleaned rotates, and the cleaning device moves accordingly to clean, reciprocating until the designed stroke ends, at which point the cleaning equipment shuts down.

[0037] In this embodiment, the cleaning equipment operates as follows: The moving device, controlled by the PLC system, reciprocates horizontally, and the cleaning device, fixedly connected to the moving device, also drives the cleaning and adhesive scraper. The movement process is simple: when the motor rotates forward, the tank chain (drive chain) moves it to the end of the frame. After the sensor receives a signal, the motor reverses, moving in the opposite direction, thus completing the reciprocating movement. On the other hand, the rotating device controls the scraper's rotation. After the motor starts, the scraper coupling drives the scraper to rotate. Because its seal is fixed, the scraper rotates accordingly, gradually cleaning the inside of the scraper during the reciprocating movement of the upper cleaning unit. The cleaning action of the scraper is achieved through the reciprocating cleaning device and the rotating scraper.

[0038] The cleaning principle of the squeegee cleaning device is as follows: The distance between the nozzle and the squeegee is adjusted according to the squeegee's dimensions. The vertical height of the cleaning unit is controlled by adjusting the adjusting bolts on the support. When the upper and lower bolts move upwards, the distance between the nozzle and the squeegee increases, and vice versa. After the cleaning device is started, spray water enters the main spray pipe through a high-pressure water pipe. The high-pressure water inside the main spray pipe is sprayed out through the nozzles at high speed to clean the squeegee surface. After the squeegee is mounted on the machine, one side approaches the auxiliary clamp, while the piston rod of the cylinder on the other side extends and inflates. The main clamp, installed at the end of the piston rod, extends to fix the squeegee. After the motor is started, the hanging rod rotates, and the cleaning work is gradually completed under the reciprocating motion of the cleaning unit.

[0039] The control principle of the automatic cleaning equipment for adhesive scrapers is as follows: The scraper rotation is driven by a servo motor, and the rotation drive uses frequency conversion control, with a speed adjustment range of 5-15 rpm. Based on the synchronous pulse output function of the PLC controller, the motion matching between the scraper rotation and the reciprocating motion of the cleaning head (speed 0-500 mm / s) is achieved. Through mathematical model calculation (formula: reciprocating speed = scraper circumference × rotation speed × coverage coefficient), it is ensured that the nozzle covers the entire circumference within one rotation of the scraper, avoiding cleaning blind spots. The distance between the nozzle and the scraper is monitored in real time by a laser displacement sensor, and an automatic alarm and shutdown are triggered when the deviation exceeds ±2 mm. Drainage system: The bottom of the water tank is designed with an inclined base plate (5° slope), connected to the workshop sewage pipe network, and equipped with an automatic slag discharge valve. The integrated PLC controller and touch screen support two modes: "Standard Cleaning" (suitable for conventional starch adhesives) and "Deep Cleaning" (suitable for high adhesion latex). Users can customize parameters such as rotation speed (5-15 rpm) and reciprocating speed (100-500 mm / s). Electrical Control System: Integrated Siemens S7-1200 PLC controller, equipped with a 10-inch touchscreen, supporting two modes: "Standard Cleaning" (10 rpm, 300 mm / s reciprocating speed) and "Deep Cleaning" (5 rpm, 100 mm / s reciprocating speed). Sensor Module: Equipped with a laser displacement sensor (model KEYENCE LK-G152, accuracy ±0.02 mm) to monitor the scraper bar runout, and a limit sensor (model OMRON E2E-X10D1) to prevent the cleaning head from overtraveling. Scraper Bar Fixing Device: The scraper bar clamp is controlled by a cylinder to clamp the rear support seat. Depending on the scraper bar length requirement of 2-10 m, after inputting the scraper bar length into the PLC system and opening the air supply switch valve, the cylinder actuates to clamp the scraper bar by adjusting the corresponding control valve.

[0040] The cleaning equipment for squeegee rods provided in this application addresses three major pain points in the squeegee rod production process: incomplete coverage, stubborn adhesive residue, and cumbersome operation. Through a dual-dimensional cleaning mode of "rotation + reciprocating," it achieves 360° coverage of the squeegee rod grooves without dead angles, increasing the adhesive removal rate to over 99%. This fundamentally solves the problem of squeegee rod cleaning, enabling on-machine cleaning and solving the problem of efficient recycling of squeegee rods. The cleaning equipment features a simple structure and low maintenance costs. In terms of cost savings: thorough removal of adhesive residue (removal rate ≥99%) extends the squeegee rod life to 6-12 months, reducing annual procurement by 50%; cleaning time is shortened to 5-10 minutes, improving adhesive coating uniformity (deviation ≤±0.1g / m²), increasing the yield from 95% to 99.5%, reducing paper breakage rate by 70%, and enhancing production continuity. Simultaneously, it significantly reduces manual labor intensity and has achieved excellent results in actual production.

[0041] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A cleaning device for a glue applicator scraper, characterized in that, The cleaning equipment includes: a support frame, a cleaning device, a moving device, and a rotating device; the moving device is connected to the support frame, the cleaning device is fixedly connected to the moving device, and the cleaning device can reciprocate along the axial direction of the squeegee to be cleaned under the drive of the moving device, thereby cleaning the squeegee to be cleaned; the rotating device is connected to the support frame and is used to drive the squeegee to be cleaned to rotate along the axis.

2. The cleaning equipment according to claim 1, characterized in that, The mobile device includes a first drive motor and a transmission chain. The cleaning device is fixedly connected to the transmission chain, and the first drive motor drives the cleaning device to move through the transmission chain.

3. The cleaning equipment according to claim 2, characterized in that, The cleaning device includes a connecting assembly and a spray unit. The spray unit is connected to the connecting assembly, and the connecting assembly is fixedly connected to the transmission chain. The spray unit is connected to an external water supply device.

4. The cleaning equipment according to claim 3, characterized in that, The connecting assembly includes a connecting plate and an adjusting unit. The connecting plate is fixedly connected to the transmission chain, and the adjusting unit is connected to both the connecting plate and the spraying unit. The adjusting unit is used to adjust the height of the spraying unit.

5. The cleaning equipment according to claim 4, characterized in that, The adjustment unit includes an adjustment vertical rod, an adjustment horizontal rod, a connecting block, and an adjustment nut. The spraying unit is fixedly connected to one end of the adjustment horizontal rod. The adjustment vertical rod is connected to the adjustment horizontal rod through the adjustment block. The adjustment vertical rod passes through the connecting plate. The adjustment nuts are respectively located on opposite sides of the connecting plate and screwed to the adjustment vertical rod.

6. The cleaning equipment according to claim 3, characterized in that, The spray unit has a liquid flow channel in the middle, and multiple nozzles are evenly distributed along the extension direction of the liquid flow channel, with each nozzle communicating with the liquid flow channel.

7. The cleaning equipment according to claim 1, characterized in that, The rotating device includes a second drive motor and a coupling. The second drive motor is connected to the end of the squeegee to be cleaned through the coupling. The second drive motor drives the squeegee to be cleaned to rotate along the axis through the coupling.

8. The cleaning equipment according to claim 1, characterized in that, The cleaning equipment also includes a fixing device, which is fixed to the bracket. The fixing device is used to assist in clamping and fixing the sealing element on the outer sleeve of the adhesive scraper to be cleaned. The adhesive scraper to be cleaned can rotate relative to the sealing element.

9. The cleaning equipment according to claim 8, characterized in that, The fixing device includes a support member, a drive cylinder, and a clamp. The drive cylinder is fixed to the support member and can drive the clamp to open or close, thereby clamping or releasing the seal.

10. The cleaning equipment according to claim 9, characterized in that, The clamp includes a first clamping block and a second clamping block. The first clamping block is fixedly connected to the support member, and the second clamping block is connected to the piston rod of the drive cylinder and can move away from or closer to the first clamping block under the drive of the piston rod. The sealing member can be clamped between the first clamping block and the second clamping block.

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