A metering rod cleaning device using a planetary gear mechanism to implement cleaning actions

Abstract

The present invention provides a metering rod cleaning device that uses a planetary gear mechanism to implement a cleaning action. The cleaning device is equipped with a packaging shell on a frame, and the packaging shell is respectively provided with a water inlet, an overflow drain port and a water outlet, a hatch is installed at the end of the packaging shell, and a hand wheel and a screw are installed on the hatch. The interior of the packaging shell is equipped with a transmission shaft, a fixed planetary gear mechanism and a mobile planetary gear mechanism, and a sun gear and a brush roller are mounted on the transmission shaft. The end of the fixed planetary gear mechanism is equipped with a rear pressure cover, and the end of the mobile planetary gear mechanism is equipped with a front pressure cover. The other end of the packaging shell is equipped with a bearing assembly, and the bearing assembly is mounted on the end of the transmission shaft. The transmission shaft passes through the packaging shell and is connected to a power source. The number of planetary gears in the device can be appropriately increased or decreased according to the cleaning requirements of the metering rod, so as to achieve the purpose of cleaning more metering rods at one time and reducing energy consumption, and the combination design of the components is reasonable, the cost is low, and it is easy to use. Through the packaging method, the volume of the equipment is reduced.

Description

Technical Field

[0001] The invention relates to the field of papermaking coating machinery, and in particular to a metering rod cleaning device which adopts a planetary gear mechanism to implement a cleaning action. Background Art

[0002] The metering rod (also known as grooved rod, wire rod, scraper rod, silk rod, glue scraping rod, film coating rod, etc.) is a coating component that is widely used in the domestic paper production, adhesive tape products, various film coating industries and other industries. Its working method is to use the cavity area of ​​the groove (tooth shape) of the metering rod to quantitatively scrape glue on the surface of the substrate. It is generally installed behind the glue roller of the coating machine, and the excess glue is scraped off with precise quantitative control. Different metering rod models are selected according to the actual production needs to achieve precise control of the glue coating amount.

[0003] In the prior art, high-speed paper machines generally use a metering rod to apply the glue to the glue roller, and the glue roller transfers the glue to the paper surface for gluing. In actual use, the grooves (tooth profiles) on the metering rod will be blocked by impurities, so the metering rod needs to be cleaned after each period of use. The solution of the prior art is to perform a roller-separating operation on the glue roller of the sizing machine, and then replace the metering rod, and manually clean the replaced metering rod with a high-pressure water gun. This operation method leads to high labor intensity, long time and inconvenient cleaning. In the prior art, the cleaning of the metering rod usually requires an operating platform with a certain height and width, which results in a large external size and inconvenience for on-site installation and use near the metering rod use site. In the prior art, the cleaning of the metering rod requires a soaking tank and a cleaning tank, which requires sufficient external size and installation and use space. The cleaning of the metering rod usually requires two actions, one is that the metering rod is driven to rotate, and the other is that the brush or nozzle moves back and forth in a straight line along the direction of the metering rod, which results in at least 2 or more power sources. The metering rod has a large aspect ratio and requires a platform support when cleaning. The existing technology uses a brush cleaning method, in which the brush makes reciprocating linear motion along the metering rod. The brush movement direction is perpendicular to the groove (tooth shape) of the metering rod, which cannot achieve effective cleaning.

[0004] The patent number is 201520514307.3, and the patent name is a utility model patent for an automatic cleaning device for a metering rod. The automatic cleaning method of the metering rod is proposed as follows: the first servo motor drives the brush and the nozzle to move, and the second servo motor drives the metering rod to rotate. The cleaning method is water flushing and brush scrubbing. It needs to be equipped with a water tank and a slide rail. The defects of this technology are: (1) The driving device is complicated and requires two servo motors. If the roller-shaped brush needs to rotate (it is not clear in the patent whether the brush rotates), three motors are required to drive it; (2) It is equipped with a rack, a slide rail, and a water tank, which makes the equipment occupy a large space and is inconvenient to install and use on the spot where the metering rod is used; (3) The roller-shaped brush needs to be replaced frequently, and the large number of motors makes maintenance complicated during use.

[0005] The patent number is 201520585473.2, and the patent name is a utility model patent for an automatic cleaning device for a metering rod. The automatic cleaning method of the metering rod is proposed as follows: soaking in a soaking tank, cleaning in a cleaning tank, one motor drives the metering rod to rotate, and another motor drives the cleaning nozzle to move. The cleaning method is high-pressure water flushing, which requires a high-pressure water pump. The defects of this technology are: (1) There are many motors, requiring a drive motor and a high-pressure water pump motor; (2) It is equipped with a frame, a cleaning tank, a soaking tank, a cleaning mobile mechanism, a cleaning rack, a cleaning platform, and a metering rod placement area, resulting in a large space occupied by the equipment, which is inconvenient to install and use on-site at the metering rod use site; (3) The need for high-pressure water flushing leads to high energy consumption.

[0006] The patent number is 201721108995.9, and the patent name is a utility model patent for a device for cleaning the metering rod of a glue roller. The method for automatically cleaning the metering rod is proposed as follows: one motor drives the metering rod to rotate, and another motor drives the trolley to move back and forth. The cleaning method is water flushing. The flushing nozzle is installed on the trolley, and it needs to be equipped with a rack, guide rails, rollers, chains or steel ropes. The defects of this technology are: (1) There are many motors, the drive is complicated, and two motors are required; (2) The rack, guide rails, rollers, chains or steel ropes cause the equipment to occupy a large space, which is inconvenient to install and use on the spot where the metering rod is used; (3) The chain or steel rope needs to be frequently tightened or replaced, resulting in a large workload for repair and maintenance.

[0007] The patent number is 201820343693.8, and the patent name is a utility model patent for a metering rod cleaning device. It proposes an automatic cleaning device for the metering rod, and its structure includes a circulating water storage tank, a filter, a cleaning device body, a cleaner, a conveyor, a blower, a control box, a bracket, a duct, and a water pump. Its advantage is that the filter is used to avoid incomplete cleaning caused by impurities in the water. Its technical defects are: it requires multiple devices such as water pumps and blowers that require motors, resulting in complex driving; (2) The bracket, circulating water storage tank, cleaner, conveyor, blower, etc. cause the equipment to occupy a large space, which is inconvenient to install and use on the spot where the metering rod is used. (3) The metering rod is transported by the conveyor and does not rotate by itself, resulting in incomplete cleaning.

[0008] The patent number is 201822246254.8, and the patent name is a utility model patent for an online cleaning device for a metering rod. It proposes an online cleaning method for the metering rod, and its structure includes an alkali solution tank, a first delivery pump, a dilution tank, a second delivery pump, a first valve, and a second valve. Its advantages: it is possible to achieve online cleaning on the machine without disassembling the metering rod. Its technical defects are: since online cleaning is carried out when the metering rod is working, the cleaning alkali solution and diluent can directly enter the glue or coating along the groove (tooth shape) of the metering rod when cleaning the metering rod, and then enter the surface of the paper sheet, which has an uncertain impact on the subsequent process of paper production. Summary of the invention

[0009] The purpose of the present invention is to provide a metering rod cleaning device that uses a planetary gear mechanism to implement the cleaning action. The technical problems that the present invention needs to solve are: 1. Simplify the external dimensions, installation and use space of the metering rod cleaning device; 2. Reduce the number of driving motors in the cleaning device, reduce the energy consumption of the cleaning device, and reduce the workload of maintenance during the use of the cleaning device; 3. Meet the requirements of on-site installation and on-site cleaning; 4. Reduce manpower, reduce costs, reduce energy consumption, and achieve the purpose of cleaning multiple metering rods at one time.

[0010] The design concept of the present invention is: 1. A tubular encapsulation shell is used, and all parts are integrated in the tubular encapsulation shell. The power source is directly installed at one end of the tubular encapsulation shell, and the cross-sectional area can be made very small, which is convenient for on-site installation and use near the use site of the metering rod. The encapsulation shell can be used to replace the soaking tank and the cleaning tank, simplifying the external dimensions and installation and use space. Considering the user's on-site use, the frame design is simple and can be directly placed against the wall in the use workshop of the equipment to which the metering rod belongs.

[0011] 2. Since the cleaning device of the present application adopts a planetary gear mechanism, it only needs one power source to drive it. At that time, the brush roller that drives the sun gear to rotate synchronously can complete the cleaning action. The rotation of the metering rod is driven by the planetary gear of the mobile planetary gear mechanism, and no additional power source is required.

[0012] 3. The planetary gear mechanism cage is used for segmented support, which simplifies the design appearance and usage space. In order to facilitate the insertion and installation of the metering rod, the metering rod insertion hole on the cage should be larger than the diameter of the metering rod to ensure sufficient clearance and adopt a large chamfer design of the tapered hole.

[0013] 4. The movement direction of the brush designed in the technical solution of this application is parallel to the groove (tooth shape) of the metering rod, and the cleaning method is more scientific. A brush roller is used, and its cumulative length is approximately the same as the length of the metering rod. Compared with the short-bristled roller brush in the prior art, there are more brushes, less wear and tear during use, and no frequent replacement of brushes is required, which reduces the workload of replacing brushes. This method is similar to brushing teeth. When brushing teeth, the toothbrush should move up and down instead of left and right.

[0014] 5. The cleaning device of the present application is a tubular encapsulated shell with a rotating element inside. In order to effectively seal, the model of a drum washing machine is borrowed, and a hatch is designed at one end of the tubular shell. Based on the large aspect ratio of the metering rod, an insertion installation method is adopted, so that the installation of the metering rod can be achieved by one person.

[0015] 6. The cleaning device of the present application takes into account that the metering rod cannot fully contact the brush of the brush roller due to the support of the retaining frame of the planetary gear mechanism, so it is necessary to add a spiral reciprocating mechanism. After the metering rod is cleaned for a period of time, the reciprocating mechanism pushes the metering rod to change position, so that the part of the metering rod that is not in contact with the brush (not cleaned) contacts the brush and is cleaned.

[0016] 7. In order to reduce the number of power sources, the spiral reciprocating mechanism in the cleaning device of the present application adopts a manual method. Although the degree of automation is not high, the operation is simple and effective.

[0017] 8. In order to ensure high coaxiality of multiple sets of planetary gear mechanisms in a tubular package, the cleaning device of the present application is designed with threaded pins for adjustment and positioning, and the threads are pipe threads to prevent water leakage.

[0018] 9. The cleaning device of the present application takes into account the need to add and replace cleaning water and cleaning liquid, and is designed with a water inlet, a drain outlet, and an overflow drain outlet.

[0019] To achieve the above object, the present invention adopts the following technical solutions:

[0020] A metering rod cleaning device that uses a planetary gear mechanism to implement a cleaning action includes: a packaging shell, a hatch, a water inlet, a water outlet, an overflow drain, a threaded pin, a bearing assembly, a fixed planetary gear mechanism, a mobile planetary gear mechanism, a locking nut, a brush roller, a transmission shaft, a metering rod, a frame, a brush, and a spiral reciprocating mechanism, wherein: the fixed planetary gear mechanism and the mobile planetary gear mechanism include: an internal gear, a sun gear, a planetary gear, and a planetary gear retainer; the spiral reciprocating mechanism includes: a spring, a rear pressure plate, a hand wheel, a screw rod, and a front pressure plate; the cleaning device is equipped with a packaging shell on the frame, a sealing shell, and a movable planetary gear mechanism. A water inlet and an overflow drain are respectively arranged at the two ends of the upper part of the encapsulated shell, a drain is arranged at the lower part of the encapsulated shell, a hatch is arranged at the end of the encapsulated shell, a hand wheel and a screw are arranged on the hatch, a transmission shaft is arranged inside the encapsulated shell, a sun gear and a brush roller are arranged on the transmission shaft, a fixed planetary gear mechanism and a movable planetary gear mechanism are arranged inside the encapsulated shell, a rear pressure cover is arranged at the end of the fixed planetary gear mechanism, a front pressure cover is arranged at the end of the movable planetary gear mechanism, a bearing assembly is arranged at the other end of the encapsulated shell, the bearing assembly is arranged on the end of the transmission shaft, and the transmission shaft passes through the encapsulated shell and is connected with the power source.

[0021] The sun gears of the fixed planetary gear mechanism and the movable planetary gear mechanism in the cleaning device are mounted on the transmission shaft, the planetary gears are mounted in the internal gear and connected with a planetary gear retainer, the planetary gears are meshed with the sun gear and the internal gear respectively, and the internal gear is fixed to the packaging shell through a threaded pin.

[0022] The planetary gear in the cleaning device is kept overhead and sleeved on the metering rod, the two ends of the metering rod are respectively mounted on the rear pressure cover and the front pressure cover, and the metering rod is fixed by a locking nut.

[0023] The spring and rear gland of the spiral reciprocating mechanism in the cleaning device are hollowly sleeved on the transmission shaft, one end of the spring is connected to the end of the packaging shell, and the other end is connected to the rear gland, the front gland is hollowly sleeved on the screw rod, and the front gland is provided with an installation hole for installing the metering rod.

[0024] The brush roller in the cleaning device is a cylindrical structure, on which a brush is arranged, and the brush is made of natural material, artificial fiber or metal material.

[0025] The hatch in the cleaning device is opened and closed by a hinge mechanism and is provided with a sealing gasket and a locking handle. The hatch is made of transparent material.

[0026] The planetary wheel holder in the cleaning device is provided with a tapered hole for placing a metering rod, and there is a movable space between the tapered hole and the metering rod.

[0027] The fixed planetary gear mechanism and the brush roller in the cleaning device are a combined structure.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The number of planetary wheels in the device can be increased or decreased appropriately according to the cleaning requirements of the metering rods, so as to achieve the purpose of cleaning more metering rods at one time and reducing energy consumption;

[0030] 2. The spiral reciprocating mechanism in the device can drive the planetary gear and the planetary gear holder in the mobile planetary gear mechanism to reciprocate, and drive the metering rod to reciprocate linearly;

[0031] 3. When the brush roller and brush in the device rotate, they can brush along the grooves (tooth shape) of the metering rod without damaging the tooth shape of the metering rod. The cleaning method is appropriate and reasonable, and has little effect on the subsequent coating operation effect;

[0032] 4. The device has the advantages of reasonable combination design, low cost, easy use, etc. The volume of the device is reduced through tubular packaging;

[0033] 5. The use of this device produces significant social and economic benefits and has good industrialization prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 , schematic diagram of the main structure of the metering rod cleaning device;

[0035] Figure 2 , a schematic diagram of the side structure of the metering rod cleaning device;

[0036] Figure 3 , a schematic diagram of the end surface structure of the planetary gear mechanism of the metering rod cleaning device;

[0037] Figure 4 , working principle diagram of metering rod cleaning device;

[0038] Figure 5 , schematic diagram of the metering rod support and locking of the metering rod cleaning device.

[0039] In the figure: 1. packaging shell, 2. hatch, 3. water inlet, 4. drain port, 5. overflow drain port, 6. threaded pin, 7. bearing assembly, 8. fixed planetary gear mechanism, 9. internal gear, 10. sun gear, 11. planetary gear, 12. planetary gear retainer, 13. mobile planetary gear mechanism, 14. locking nut, 15. brush roller, 16. spring, 17. rear pressure plate, 18. hand wheel, 19. screw, 20. front pressure plate, 21. transmission shaft, 22. metering rod, 23. frame, 24. brush. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is further described clearly and completely below in conjunction with the accompanying drawings and embodiments.

[0041] See attached Figure 1-5 The figure only schematically shows the connection relationship between the various components and is only used to explain the working principle of the cleaning device for the metering rod of the planetary gear mechanism. All pipe fittings in actual applications are not drawn, and it is not proportional to the actual product. Figure 3 and Figure 4 The middle arrow indicates the rotation direction of the sun gear 10, the planetary gear 11, the brush roller 15 and the metering rod 22. Figure 5 The middle arrow indicates the insertion direction of the metering rod 22 during installation.

[0042] The cleaning device comprises a packaging shell 1 mounted on a frame 23, and a hatch 2, a water inlet 3, a water outlet 4, an overflow drain 5, a threaded pin 6 and a bearing assembly 7 arranged on the packaging shell. Inside the packaging shell 1, multiple sections of fixed planetary gear mechanisms 8 are arranged (the number of fixed planetary gear mechanisms 8 is not specifically limited here. Generally, the longer the length of the metering rod 22, the more the number of such mechanisms). The fixed planetary gear mechanism 8 is composed of an internal gear 9, a sun gear 10, a planetary gear 11 and a planetary gear holder 12. The planetary gear holder 12 in the fixed planetary gear mechanism 8 is loosely sleeved on the metering rod 22 to support the metering rod 22. A mobile planetary gear mechanism 13 is arranged at one end of the packaging shell 1 near the hatch 2. Its basic structure and function are the same as those of the fixed planetary gear mechanism 8. A locking nut 14 is also arranged on the planetary gear 11 of the mobile planetary gear mechanism 13, which can lock the metering rod 22 with the planetary gear 11 of this mechanism, and the metering rod 22 moves and rotates axially synchronously with the planetary gear 11 of this mechanism. The planetary gear 11 and the planetary gear holder 12 in the mobile planetary gear mechanism 13 can move axially within a certain range, and a brush roller 15 equipped with a brush 24 is also provided in the encapsulating shell 1, which is installed on the transmission shaft 21 and rotates with the transmission shaft. It is ensured that all the grooves (teeth) on the surface of the metering rod 22 can contact the brush 24 on the brush roller 15, so that all the grooves (teeth) on the surface of the metering rod 22 can be cleaned.

[0043] The spiral reciprocating mechanism is composed of a spring 16, a rear pressure plate 17, a hand wheel 18, a screw 19, and a front pressure plate 20. The spiral reciprocating mechanism can push the planetary gear 11 and the planetary gear holder 12 in the planetary gear mechanism 13 to reciprocate, and drive the metering rod 22 to reciprocate linearly.

[0044] like Figure 1 As shown, there is a certain space between the brush roller 15 and the metering rod 22. When the brush roller 15 rotates, the grooves (teeth) on the metering rod 22 can be cleaned. The bearing assembly 7 supports the rotation of the transmission shaft 21.

[0045] like Figure 3As shown, in the fixed planetary gear mechanism 8, a plurality of planetary gears 11 are evenly distributed between the internal gear 9 and the sun gear 10 (the number of the planetary gears 11 is not specifically limited here, and generally, the more metering rods 22 that need to be cleaned simultaneously, the greater the number of the planetary gears 11). When working, the planetary gears 11 are driven by the sun gear 10 to rotate at a low speed.

[0046] In actual use, a cleaning liquid (including clean water and cleaning agent) is injected through the water inlet 3 on the packaging shell 1, the power source is started, the transmission shaft 21 is driven to rotate and the brush roller 15 mounted on the transmission shaft 21 is driven to rotate, and at the same time, the metering rod 22 is driven by the planetary gear 11 to rotate in the opposite direction to the rotation direction of the brush roller 15. During operation, the linear velocity of the brush roller 15 is higher than the linear velocity of the metering rod 22, so that the speed difference between the metering rod 22 and the brush 24 forms friction, so that the metering rod 22 can be cleaned. The grooves (tooth shape) of the metering rod 22 can contact with the brush 24 and the cleaning liquid, and the brush 24 brushes along the grooves (tooth shape) of the metering rod 22 for a period of time (the specific cleaning time is not limited here, usually, the dirtier the metering rod 22, the longer the cleaning time). The self-rotation of the metering rod 22 can clean the circumference of the metering rod 22. The places where the metering rod 22 is not in contact with the brush 24 in the axial direction can be cleaned by axial displacement using a spiral reciprocating mechanism. The overflow water during cleaning is discharged through the overflow outlet 5. After cleaning for a period of time, the metering rod 22 is basically cleaned in the axial direction, and only the part that is not in contact with the brush 24 is not cleaned. At this time, the hand wheel 18 on the hatch 2 can be turned to make the screw 19 connected to the hand wheel 18 produce a spiral reciprocating motion, thereby pushing the movable planetary gear mechanism 13 to move axially, driving the metering rod 22 to produce displacement, so that the parts that were not in contact with the brush 24 are in contact with the brush 24 and cleaned. After cleaning, the hand wheel 18 is rotated in the opposite direction to reset the metering rod 22. After cleaning, the water outlet 4 is opened to discharge the dirty liquid. The power source for driving the transmission shaft 21 to rotate is not within the protection scope of the present invention, so the accompanying drawings are not drawn.

[0047] It should be noted that the present invention claims protection for the structure of the cleaning device for the metering rod of the planetary gear mechanism. Although cleaning liquid, water, etc. are used in actual use, the cleaning liquid and water are not within the protection scope of the present invention. It should be noted that any method of using a planetary gear mechanism to drive the metering rod and the brush roller for cleaning does not change the essence of the technical solution and should fall within the protection scope of the present invention.

[0048] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the technical essence of the present invention should be included in the protection scope of the present invention.

Claims

1. A metering rod cleaning device using a planetary gear mechanism to implement a cleaning action, comprising: A packaging shell (1), a hatch (2), a water inlet (3), a water outlet (4), an overflow drain (5), a threaded pin (6), a bearing assembly (7), a fixed planetary gear mechanism (8), a movable planetary gear mechanism (13), a locking nut (14), a brush roller (15), a transmission shaft (21), a metering rod (22), a frame (23), a brush (24), and a spiral reciprocating mechanism, wherein the fixed planetary gear mechanism (8) and the movable planetary gear mechanism (13) include an internal gear (9), a sun gear (10), a planetary gear (11), and a planetary gear retainer (12); the spiral reciprocating mechanism includes a spring (16), a rear pressure plate (17), a hand wheel (18), a screw rod (19), and a front pressure plate (20); the cleaning device is characterized in that the packaging shell (1) is mounted on the frame (23); the upper portion of the packaging shell (1) A water inlet (3) and an overflow drain (5) are respectively arranged at both ends, a drain port (4) is arranged at the lower part of the encapsulated shell (1), a hatch (2) is arranged at the end of the encapsulated shell (1), a hand wheel (18) and a screw rod (19) are arranged on the hatch (2), a transmission shaft (21) is arranged inside the encapsulated shell (1), a sun gear (10) and a brush roller (15) are mounted on the transmission shaft (21), a fixed planetary gear mechanism (8) and a movable planetary gear mechanism (13) are arranged inside the encapsulated shell (1), a rear pressure plate (17) is arranged at the end of the fixed planetary gear mechanism (8), a front pressure plate (20) is arranged at the end of the movable planetary gear mechanism (13), a bearing assembly (7) is arranged at the other end of the encapsulated shell (1), the bearing assembly (7) is mounted on the end of the transmission shaft (21), and the transmission shaft (21) passes through the encapsulated shell (1) and is connected to a power source.

2. The metering rod cleaning device using a planetary gear mechanism to implement the cleaning action according to claim 1, characterized in that: In the cleaning device, the sun gear (10) of the fixed planetary gear mechanism (8) and the movable planetary gear mechanism (13) are mounted on a transmission shaft (21), the planetary gear (11) is mounted in an internal gear (9) and connected with a planetary gear holder (12), the planetary gear (11) is meshed with the sun gear (10) and the internal gear (9) respectively, and the internal gear (9) is fixed to the packaging shell (1) through a threaded pin (6).

3. The metering rod cleaning device using a planetary gear mechanism to implement the cleaning action according to claim 1, characterized in that: The planetary wheel holder (12) in the cleaning device is hollowly sleeved on the metering rod (22), the two ends of the metering rod (22) are respectively mounted on the rear pressure plate (17) and the front pressure plate (20), and the metering rod (22) is fixed by a locking nut (14).

4. The metering rod cleaning device using a planetary gear mechanism to implement the cleaning action according to claim 1, characterized in that: The spring (16) and the rear pressure plate (17) of the spiral reciprocating mechanism in the cleaning device are loosely mounted on the transmission shaft (21), one end of the spring (16) is connected to the end of the packaging shell (1), and the other end is connected to the rear pressure plate (17), the front pressure plate (20) is loosely mounted on the screw rod (19), and the front pressure plate (20) is provided with a mounting hole for mounting a metering rod (22).

5. The metering rod cleaning device using a planetary gear mechanism to implement the cleaning action according to claim 1, characterized in that: The brush roller (15) in the cleaning device is a cylindrical structure. A brush (24) is arranged on the brush roller (15). The brush (24) is made of natural materials, artificial fibers or metal materials.

6. The metering rod cleaning device using a planetary gear mechanism to implement the cleaning action according to claim 1, characterized in that: The hatch (2) in the cleaning device is opened and closed by a hinge mechanism and is provided with a sealing gasket and a locking handle. The hatch (2) is made of a transparent material.

7. The metering rod cleaning device using a planetary gear mechanism to implement the cleaning action according to claim 1, characterized in that: The planetary wheel holder (12) in the cleaning device is provided with a tapered hole for placing a metering rod (22), and there is a movable space between the tapered hole and the metering rod (22).

8. The metering rod cleaning device using a planetary gear mechanism to implement the cleaning action according to claim 1, characterized in that: The fixed planetary gear mechanism (8) and the brush roller (15) in the cleaning device are a combined structure.

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