A carton conveying device and a color-printed carton packaging equipment

Abstract

This invention belongs to the field of paper box packaging technology and discloses a paper box conveying device and color-printed paper box packaging equipment, including a paper box conveying mechanism; a pneumatic mechanism disposed on the top of the paper box conveying mechanism; a gripping component disposed at one end of the pneumatic mechanism, and the other end of the gripping component being fixedly connected to the pneumatic mechanism; and a power component including a piston block. The above technical solution, by setting up a power component and a blocking component, allows the pneumatic mechanism to operate, drawing gas from the vent pipe. This enables the power component to be smoothly driven to release the blocking component from sealing the bottom of the vent pipe. At this time, the gas will sequentially pass through the power component to draw away the gas in the vent pipe, causing the gripping suction cup to adhere to the paper box for suction and clamping. When the suction stops and the gas is exhausted, the power component drives the blocking component to seal the connection between the vent pipe and the gripping suction cup, ultimately preventing external dust from entering and causing blockage when idle, thus avoiding affecting subsequent operations.

Description

Technical Field

[0001] This invention belongs to the field of paper box packaging technology, specifically a paper box conveying device and color printing paper box packaging equipment. Background Technology

[0002] Color printing paper box packaging equipment is used to transport and package items inside paper boxes, while paper box conveying device is used to transport paper boxes from one position to another. By using a clamping mechanism to transport the stacked paper boxes to the top of the conveyor belt, the packaging mechanism sequentially puts the items into the corresponding paper boxes to achieve the purpose of paper box packaging.

[0003] Existing cardboard box gripping and conveying devices generally use suction cup gripping devices. However, since the suction cups and air inlet pipes are connected to the outside, when the suction cups and pipes are not in use, dust and impurities from the outside will enter and accumulate inside, causing blockages over time. This will greatly affect the gripping force of the suction cups, requiring disassembly and cleaning. This operation is cumbersome and complicated, and the devices cannot be disassembled and cleaned immediately, which will affect the conveying efficiency during operation. Therefore, improvements are needed. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a paper box conveying device and a color printing paper box packaging equipment, which has the advantage of facilitating dust prevention by covering the suction cup pipe when it is idle.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a paper box conveying device, comprising a paper box conveying mechanism; a pneumatic mechanism disposed on the top of the paper box conveying mechanism; a gripping component disposed at one end of the pneumatic mechanism, and the other end of the gripping component being fixedly connected to the pneumatic mechanism; a power component comprising a piston block, a one-way valve flap movably installed inside the gripping component, the piston block having a one-way valve flap inside, a baffle plate located between the piston block and the pneumatic mechanism being disposed on the inner wall of the gripping component, a through pipe being fixedly connected to the end of the baffle plate near the one-way valve flap, and a blocking component located outside the one-way valve flap being disposed inside the gripping component.

[0006] Preferably, the diameter of the through pipe is smaller than the diameter of the one-way valve disc, and the diameter of the through pipe is smaller than the diameter of the piston block inner cavity.

[0007] Preferably, the gripping component includes an air duct and a gripping suction cup;

[0008] The ventilation tube is located on one side of the pneumatic mechanism, with one end fixedly connected to the pneumatic mechanism, and the gripping suction cup is fixedly installed on the other end of the ventilation tube.

[0009] Preferably, the shielding assembly includes a triangular block, a connecting frame, a shielding block, and a power spring;

[0010] The triangular block is movably installed on the outer side between the baffle plate and the piston block. The connecting frame is fixedly installed on the outer side of the triangular block and slidably connected to the inner wall of the vent pipe. The shielding block is fixedly installed on one end of the inner side of the connecting frame. The connecting frame is elastically connected to the inner wall of the pneumatic mechanism through a power spring.

[0011] Preferably, the inner side of the triangular block is inclined.

[0012] Preferably, a pneumatic assembly between the through pipes is provided on the outer side of the piston block, and the pneumatic assembly includes a circular hole, a first pneumatic groove and a pneumatic piston rod;

[0013] The circular hole is opened inside the outer side of the baffle plate, the first pneumatic groove is opened inside the piston block and is directly opposite the circular hole, the pneumatic piston rod is movably installed in the inner cavity of the first pneumatic groove, and the diameter of the other end is the same as the diameter of the circular hole.

[0014] Preferably, a locking assembly located inside the first pneumatic groove is provided in the middle of the piston block. The locking assembly includes a second pneumatic groove, a locking piston rod, a locking slot, and a venting channel.

[0015] The second pneumatic groove is opened on both sides of the middle part of the piston block. The locking piston rod is movably installed in the inner cavity of the second pneumatic groove. The locking slot is opened inside the baffle plate and is located inside the one-way valve disc. The second pneumatic groove is connected to the first pneumatic groove through the air passage.

[0016] Preferably, the inner wall of the vent pipe is provided with a drive assembly located outside the baffle plate and the shielding block, the drive assembly including a drive fan blade, a mounting shaft and a transmission gear;

[0017] The drive fan blade is movably sleeved inside the vent pipe and located on the other side of the baffle plate. The mounting shaft is movably sleeved inside the vent pipe and located at the outer end of the baffle plate. The transmission gear is movably sleeved at both ends of the mounting shaft. The surfaces of the drive fan blade and the transmission gear on one side mesh.

[0018] Preferably, a cleaning assembly located on one side of the shielding block is movably sleeved inside the vent pipe; the cleaning assembly includes a movable toothed ring and a cleaning scraper.

[0019] The movable toothed ring is movably sleeved in the inner cavity of the vent pipe and is located between the shielding block and the gripping suction cup. The cleaning scraper is fixedly installed on the outer side of the inner wall of the movable toothed ring. The movable toothed ring meshes with the surface of the transmission gear on the other side.

[0020] A color printing paper box packaging equipment includes a paper box packaging device body, a paper box storage rack is provided at the top of the paper box packaging device body, and the top of the paper box packaging device body and one side of the bottom of the paper box storage rack are connected to a paper box conveying mechanism.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The above technical solution, by setting up a power component and a shielding component, operates through a pneumatic mechanism to extract gas from the vent pipe. This allows the power component to be smoothly driven to release the shielding component from sealing the bottom of the vent pipe. At this time, the gas will be drawn out of the vent pipe by the power component, allowing the gripping suction cup to adhere to the cardboard box for suction and gripping. When the extraction stops and the gas is exhausted, the power component drives the shielding component to seal the connection between the vent pipe and the gripping suction cup. Ultimately, this can prevent external dust from entering and causing blockage when the device is not in use, thus avoiding affecting subsequent operations.

[0023] This invention, by setting up a pneumatic component and a locking component, allows air to be drawn out between the piston block and the through pipe when the piston block is brought into contact with the through pipe. This, in turn, draws air from one end of the pneumatic component, enabling the pneumatic component to smoothly drive the locking component to move and lock the one-way valve and the baffle plate together. Then, one end of the through pipe can push the one-way valve to open, allowing air to be drawn through the through pipe and directed towards one end of the air pipe. This enables the gripping component to stably pick up and hold the cardboard box.

[0024] This invention, by setting up a driving component and a cleaning component, first uses a pneumatic mechanism to extract gas from the vent pipe, which smoothly drives the entire driving component to operate. This allows the driving component to rotate the entire cleaning component. At this time, one end of the cleaning component can scrape the inner wall of the gripping suction cup back and forth, and then smoothly remove impurities and dust from the gripping suction cup and the side of the shielding component, thereby keeping the inner wall of the gripping suction cup smooth and maintaining its airtight gripping of the cardboard box. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the paper box conveying mechanism of the present invention;

[0027] Figure 3 This is a side cross-sectional view of the vent pipe of the present invention;

[0028] Figure 4 for Figure 3 A magnified schematic diagram of the partial structure at point A in the middle;

[0029] Figure 5 for Figure 3A magnified schematic diagram of the local structure at point B;

[0030] Figure 6 This is a cross-sectional view of the gripping component of the present invention;

[0031] Figure 7 for Figure 6 A magnified schematic diagram of the structure at point C in the middle;

[0032] Figure 8 This is a schematic diagram of the structure of the power spring of the present invention;

[0033] Figure 9 This is a bottom view of the driving component of the present invention.

[0034] In the diagram: 1. Body of the cardboard packaging device; 2. Drive assembly; 201. Drive blade; 202. Mounting shaft; 203. Transmission gear; 3. Cardboard storage rack; 4. Cardboard conveying mechanism; 5. Pneumatic mechanism; 6. Gripping assembly; 601. Air pipe; 602. Gripping suction cup; 7. Power assembly; 701. Piston block; 702. One-way valve; 703. Baffle plate; 704. Through pipe; 8. Shielding assembly; 801, Triangular block; 802, Connecting frame; 803, Blocking block; 804, Power spring; 9, Pneumatic assembly; 901, Round hole; 902, First pneumatic groove; 903, Pneumatic piston rod; 10, Locking assembly; 101, Second pneumatic groove; 102, Locking piston rod; 103, Locking slot; 104, Ventilation channel; 11, Cleaning assembly; 1101, Movable toothed ring; 1102, Cleaning scraper. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 9As shown, the present invention provides a paper box conveying device, including a paper box conveying mechanism 4; a pneumatic mechanism 5 disposed on the top of the paper box conveying mechanism 4; a gripping component 6 disposed at one end of the pneumatic mechanism 5, and the other end of the gripping component 6 being fixedly connected to the pneumatic mechanism 5; a power component 7, including a piston block 701, a one-way valve 702 movably installed inside the gripping component 6, the piston block 701 having a one-way valve 702 disposed inside, the inner wall of the gripping component 6 having a baffle plate 703 located between the piston block 701 and the pneumatic mechanism 5, the baffle plate 703 having a through pipe 704 fixedly connected to one end near the one-way valve 702, and the gripping component 6 having a shielding component 8 located outside the one-way valve 702 disposed inside the gripping component 6.

[0037] By operating the pneumatic mechanism 5 to extract the gas inside the gripping assembly 6, the gas between the piston block 701 and the baffle plate 703 can be extracted, causing the piston block 701 to slowly move closer to the baffle plate 703 until they are completely in contact, which allows the blocking assembly 8 to be fully driven to release the blockage on one end of the gripping assembly 6.

[0038] like Figure 4 and Figure 9 As shown, the diameter of the through pipe 704 is smaller than that of the one-way valve disc 702, and also smaller than the diameter of the inner cavity of the piston block 701.

[0039] By adopting the above scheme: since the diameter of the through pipe 704 is smaller than the inner diameter of the piston block 701, the gas between the piston block 701 and the baffle plate 703 can be smoothly drawn away through the through pipe 704 before the through pipe 704 is inserted into the piston block 701 to push the baffle plate 703, and then the one-way valve 702 can be smoothly pushed to flip open.

[0040] like Figure 3 and Figure 6 As shown, the gripping component 6 includes an air duct 601 and a gripping suction cup 602;

[0041] The ventilation pipe 601 is located on one side of the pneumatic mechanism 5, and one end is fixedly connected to the pneumatic mechanism 5. The gripping suction cup 602 is fixedly installed on the other end of the ventilation pipe 601.

[0042] The above solution is adopted because the gripping suction cup 602 is made of rubber, which provides a certain sealing effect and makes it fit more tightly with the cardboard box.

[0043] like Figures 7 to 9 As shown, the shielding assembly 8 includes a triangular block 801, a connecting frame 802, a shielding block 803, and a dynamic spring 804;

[0044] Triangular block 801 is movably installed on the outer side between baffle plate 703 and piston block 701. Connecting frame 802 is fixedly installed on the outer side of triangular block 801 and slidably connected to the inner wall of vent pipe 601. Block 803 is fixedly installed on one end of the inner side of connecting frame 802. Connecting frame 802 is elastically connected to the inner wall of pneumatic mechanism 5 through power spring 804.

[0045] The above solution is adopted: by setting a power spring 804, the two connecting frames 802 and the blocking block 803 can be smoothly pushed to move in opposite directions due to the elastic force of the power spring 804. This causes the blocking block 803 to block and seal the connection end of the vent pipe 601 and the gripping suction cup 602, preventing external dust and gas from entering when idle.

[0046] like Figure 7 As shown, the inner side of triangular block 801 is sloping.

[0047] The above solution is adopted: by setting up a triangular block 801, when the piston block 701 moves and approaches the baffle plate 703, the outer side of the piston block 701 will slide along the inner inclined surface of the triangular block 801, and smoothly squeeze and push the two triangular blocks 801, the connecting frame 802 and the blocking block 803 to move in opposite directions, so that the blocking block 803 releases the blocking effect on the air pipe 601 and the connecting end of the gripping suction cup 602.

[0048] like Figure 4 As shown, a pneumatic assembly 9 is provided between the through pipes 704 on the outer side of the piston block 701. The pneumatic assembly 9 includes a circular hole 901, a first pneumatic groove 902 and a pneumatic piston rod 903.

[0049] A circular hole 901 is formed inside the outer side of the baffle plate 703. A first pneumatic groove 902 is formed inside the piston block 701 and is directly opposite to the circular hole 901. A pneumatic piston rod 903 is movably installed in the inner cavity of the first pneumatic groove 902, and the diameter of the other end is the same as the diameter of the circular hole 901.

[0050] The above solution is adopted: by setting up a pneumatic piston rod 903, when the piston block 701 and the baffle plate 703 are in contact, the suction force can draw away the gas in the cavity of the round hole 901, thereby driving the pneumatic piston rod 903 to move as a whole.

[0051] like Figure 4 As shown, a locking assembly 10 located inside the first pneumatic groove 902 is provided in the middle of the piston block 701. The locking assembly 10 includes a second pneumatic groove 101, a locking piston rod 102, a locking slot 103, and a ventilation channel 104.

[0052] The second pneumatic groove 101 is opened on both sides of the middle part of the piston block 701. The locking piston rod 102 is movably installed in the inner cavity of the second pneumatic groove 101. The locking slot 103 is opened inside the baffle plate 703 and is located inside the one-way valve disc 702. The second pneumatic groove 101 is connected to the first pneumatic groove 902 through the ventilation channel 104.

[0053] The above solution is adopted: by setting a locking piston rod 102, when the pneumatic piston rod 903 moves to one side, the other end of the pneumatic piston rod 903 can push the gas inside the first pneumatic groove 902 through the ventilation channel 104 into the second pneumatic groove 101, thereby increasing the gas volume inside the second pneumatic groove 101 and pushing the two locking piston rods 102 toward each other, so that when the piston block 701 and the baffle plate 703 are subsequently attached, the inner end of the locking piston rod 102 is inserted into the locking slot 103, and the piston block 701 and the baffle plate 703 are attached, locked and fixed.

[0054] like Figure 5 and Figure 9 As shown, the inner wall of the vent pipe 601 is provided with a drive assembly 2 located outside the baffle plate 703 and the shielding block 803. The drive assembly 2 includes a drive fan blade 201, a mounting shaft 202 and a transmission gear 203.

[0055] The drive fan blade 201 is movably sleeved inside the vent pipe 601 and located on the other side of the baffle plate 703. The mounting shaft 202 is movably sleeved inside the vent pipe 601 and located at the outer end of the baffle plate 703. The transmission gear 203 is movably sleeved at both ends of the mounting shaft 202. The surfaces of the drive fan blade 201 and the transmission gear 203 on one side mesh.

[0056] Using the above scheme: By setting a transmission gear 203, when the pneumatic mechanism 5 operates to draw gas from the vent pipe 601, the drive fan blade 201 can be driven to rotate by suction, and the teeth on the surface of the drive fan blade 201 will drive the teeth on the surface of the transmission gear 203, so that the transmission gear 203 and the mounting shaft 202 will rotate as a whole.

[0057] like Figure 9 As shown, a cleaning assembly 11 located on one side of the shielding block 803 is movably sleeved inside the vent pipe 601. The cleaning assembly 11 includes a movable toothed ring 1101 and a cleaning scraper 1102.

[0058] The movable toothed ring 1101 is movably sleeved in the inner cavity of the vent pipe 601 and is located between the shielding block 803 and the gripping suction cup 602. The cleaning scraper 1102 is fixedly installed on the outer side of the inner wall of the movable toothed ring 1101. The movable toothed ring 1101 meshes with the surface of the transmission gear 203 on the other side.

[0059] The above solution is adopted: by setting up a cleaning scraper 1102, when the transmission gear 203 rotates, it can drive the movable gear ring 1101 and the cleaning scraper 1102 to rotate as a whole. The cleaning scraper 1102 can scrape and clean the inside of the gripping suction cup 602. The cleaning scraper 1102 is made of rubber, which can flatten the gripping suction cup 602 when it squeezes the cardboard box, so as to avoid affecting the sealing of the gripping suction cup 602 and the cardboard box.

[0060] A color printing paper box packaging equipment includes a paper box packaging device body 1, a paper box storage rack 3 is provided at the top of the paper box packaging device body 1, and a paper box conveying mechanism 4 is provided at the top of the paper box packaging device body 1 and at the bottom side of the paper box storage rack 3.

[0061] Using the above solution: Through the design of the cardboard storage rack 3, cardboard boxes can be stacked in this position, and then the cardboard conveying mechanism 4 can be driven to drive the pneumatic mechanism 5 and the gripping component 6 to transport the cardboard boxes as a whole.

[0062] Working principle and usage process of this invention:

[0063] First, the operator can start the pneumatic mechanism 5 to extract some gas and drive the drive fan blade 201 to rotate. At this time, through the meshing relationship between the drive fan blade 201 and the transmission gear 203, the transmission gear 203 and the mounting shaft 202 can be driven to rotate as a whole. Meanwhile, the transmission gear 203, which meshes with the surface of the movable gear ring 1101 on the other side, will rotate synchronously, driving the movable gear ring 1101 and the cleaning scraper 1102 to rotate as a whole. At this time, the cleaning scraper 1102 can be used to scrape and clean the inside of the gripping suction cup 602 in advance.

[0064] Then, the paper box conveying mechanism 4 is driven to drive the pneumatic mechanism 5 and the gripping component 6 to move together until one end of the gripping suction cup 602 is completely attached to one side of the paper box stacked on top of the paper box storage rack 3. At this time, the pneumatic mechanism 5 can be driven to evacuate the air pipe 601 and the gripping suction cup 602. Then, the air between the piston block 701 and the baffle plate 703 will be drawn away, so that the piston block 701 and the baffle plate 703 will slowly come closer together. Then, the inner inclined surface of the triangular block 801 will be squeezed and pushed, and the two triangular blocks 801, the connecting frame 802 and the blocking block 803 will move in opposite directions until the blocking block 803 releases the blocking effect on the connection end of the air pipe 601 and the gripping suction cup 602.

[0065] Meanwhile, when the pneumatic mechanism 5 draws air, the gas inside the circular hole 901 drives the pneumatic piston rod 903 to slide on one side of the inner cavity of the circular hole 901. The other end of the pneumatic piston rod 903 pushes the gas in the inner cavity of the first pneumatic groove 902 through the ventilation channel 104 into the inner cavity of the second pneumatic groove 101, increasing the air pressure in the inner cavity of the second pneumatic groove 101 and smoothly pushing the two locking piston rods 102 to move towards each other, causing the inner end of the locking piston rod 102 to be locked in the locking slot 1. Inside 03, the piston block 701 and the baffle plate 703 are fixed together, and one end of the through pipe 704 will push the one-way valve 702 to open, so that the air suction effect of the pneumatic mechanism 5 is transmitted through the through pipe 704 to the gripping suction cup 602. Finally, the gripping suction cup 602 is pressed tightly against the paper box and clamped. Then, the paper box conveying mechanism 4 can be driven to move the pneumatic mechanism 5, the gripping component 6, and the paper box as a whole, driving the top of the paper box packaging device body 1 to realize the conveying of the paper box.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper box conveying device, characterized in that, Includes a paper box conveying mechanism (4); A pneumatic mechanism (5) is located on top of the paper box conveying mechanism (4); The gripping component (6) is located at one end of the pneumatic mechanism (5), and the other end of the gripping component (6) is fixedly connected to the pneumatic mechanism (5); The power assembly (7) includes a piston block (701), a one-way valve (702) is movably installed inside the gripping assembly (6), the piston block (701) is provided with a one-way valve (702), the inner wall of the gripping assembly (6) is provided with a baffle plate (703) located between the piston block (701) and the pneumatic mechanism (5), the end of the baffle plate (703) near the one-way valve (702) is fixedly connected to a through pipe (704), and the gripping assembly (6) is provided with a shielding assembly (8) located outside the one-way valve (702). The gripping component (6) includes a vent pipe (601) and a gripping suction cup (602). The ventilation pipe (601) is located on one side of the pneumatic mechanism (5), and one end is fixedly connected to the pneumatic mechanism (5). The gripping suction cup (602) is fixedly installed on the other end of the ventilation pipe (601). The shielding assembly (8) includes a triangular block (801), a connecting frame (802), a shielding block (803), and a power spring (804). The triangular block (801) is movably installed on the outside between the baffle plate (703) and the piston block (701). The connecting frame (802) is fixedly installed on the outside of the triangular block (801) and slidably connected to the inner wall of the vent pipe (601). The shielding block (803) is fixedly installed on one end of the inner side of the connecting frame (802). The connecting frame (802) is elastically connected to the inner wall of the pneumatic mechanism (5) through a power spring (804). The inner side of the triangular block (801) is inclined; the outer side of the piston block (701) is provided with a pneumatic assembly (9) between the through pipe (704), and the pneumatic assembly (9) includes a round hole (901), a first pneumatic groove (902) and a pneumatic piston rod (903). The circular hole (901) is opened on the inner outer side of the baffle plate (703), the first pneumatic groove (902) is opened inside the piston block (701) and is directly opposite to the circular hole (901), the pneumatic piston rod (903) is movably installed in the inner cavity of the first pneumatic groove (902), and the diameter of the other end is the same as the diameter of the circular hole (901); The piston block (701) is provided with a locking assembly (10) located inside the first pneumatic groove (902) in the middle. The locking assembly (10) includes a second pneumatic groove (101), a locking piston rod (102), a locking slot (103), and a ventilation channel (104). The second pneumatic groove (101) is opened on both sides of the middle part of the piston block (701). The locking piston rod (102) is movably installed in the inner cavity of the second pneumatic groove (101). The locking slot (103) is opened inside the baffle plate (703) and located inside the one-way valve disc (702). The second pneumatic groove (101) is connected to the first pneumatic groove (902) through the air passage (104).

2. The paper box conveying device according to claim 1, characterized in that: The diameter of the through pipe (704) is smaller than the diameter of the one-way valve disc (702), and the diameter of the through pipe (704) is smaller than the diameter of the inner cavity of the piston block (701).

3. The paper box conveying device according to claim 1, characterized in that: The inner wall of the vent pipe (601) is provided with a drive assembly (2) located outside the baffle plate (703) and the shielding block (803). The drive assembly (2) includes a drive fan blade (201), a mounting shaft (202) and a transmission gear (203). The drive fan blade (201) is movably sleeved inside the vent pipe (601) and located on the other side of the baffle plate (703). The mounting shaft (202) is movably sleeved inside the vent pipe (601) and located at the outer end of the baffle plate (703). The transmission gear (203) is movably sleeved at both ends of the mounting shaft (202). The surfaces of the drive fan blade (201) and the transmission gear (203) on one side mesh.

4. The paper box conveying device according to claim 3, characterized in that: The vent tube (601) is movably sleeved with a cleaning component (11) located on one side of the shielding block (803). The cleaning component (11) includes a movable toothed ring (1101) and a cleaning scraper (1102). The movable toothed ring (1101) is movably sleeved in the inner cavity of the vent pipe (601) and located between the shielding block (803) and the gripping suction cup (602). The cleaning scraper (1102) is fixedly installed on the outer side of the inner wall of the movable toothed ring (1101). The movable toothed ring (1101) meshes with the surface of the transmission gear (203) on the other side.

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