Automatic cleaning device for sputum suction connecting tube

Abstract

The present application relates to the technical field of medical equipment cleaning device, a kind of automatic cleaning device of sputum suction connecting pipe, comprising: cleaning tank, the inside of cleaning tank is sequentially provided with first cleaning chamber, second cleaning chamber and storage room from left to right;First cleaning assembly, it is arranged in first cleaning chamber;Second cleaning assembly, it is arranged in second cleaning chamber;Dryer, it is arranged at the top in storage room;Clamping assembly, it is arranged in the front side of cleaning tank;Guide plate, it is arranged in the bottom of cleaning tank, guide plate is equipped with the first drive assembly for driving clamping assembly transverse movement.It is when using, connecting pipe is completed twice cleaning sterilization operation by first cleaning assembly and second cleaning assembly, there is no sputum residue in connecting pipe inside and outside, finally the free end of connecting pipe is stored in storage room, the inside of storage room can be isolated from the outside world, ensure that connecting pipe is not contaminated when being in storage state.

Description

Technical Field

[0001] This invention relates to the field of medical device cleaning equipment technology, specifically to an automatic cleaning device for a suction tube. Background Technology

[0002] Negative pressure wall systems play an irreplaceable role as crucial equipment in medical facilities. Suctioning via a connecting tube is a common nursing procedure for managing respiratory secretions. One end of the connecting tube connects to a sputum container, which in turn connects to the negative pressure wall system. The other end of the connecting tube is fitted with a disposable suction catheter. When the negative pressure system is activated, it creates a negative pressure environment within the sputum container. Medical staff then connect the suction catheter to the patient's airway. Under negative pressure, the patient's sputum is drawn through the suction catheter into the connecting tube, and finally flows into the sputum container. After suctioning, the suction catheter is removed and discarded, while the connecting tube needs to be reused, thus requiring cleaning and sterilization. Currently, cleaning the connecting tube requires manual operation by medical staff. The staff holds the connecting tube and inserts the free end into a bottle containing sterilizing solution, rinsing it repeatedly to clean and sterilize the outer surface of the tube. Simultaneously, a negative pressure device works to suction out both the sterilizing solution in the bottle and the sputum inside the connecting tube. As the sterilizing solution passes through the inside of the connecting tube, it cleans and sterilizes the inner surface. After the process is complete, the medical staff places the free end of the connecting tube in a plastic bag for storage, ready for the next use.

[0003] The drawbacks of medical staff manually cleaning and sterilizing the connecting tubes are that the sterilizing solution in the bottle is already contaminated after the connecting tube is inserted. Even if the negative pressure device can remove the sterilizing solution, sputum residue may remain on the outer surface of the connecting tube. In addition, plastic bags are easily damaged, and the connecting tube is easily contaminated when it is stored. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic cleaning device for suction tubes. The tube undergoes two cleaning and sterilization operations through a first cleaning component and a second cleaning component, ensuring that there is no sputum residue inside or outside the tube. Finally, the free end of the tube is stored in a storage chamber, which is isolated from the outside world to ensure that the tube is not contaminated when it is stored.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic cleaning device for a suction tube, comprising: a cleaning box, wherein the interior of the cleaning box is provided with a first cleaning chamber, a second cleaning chamber and a storage chamber from left to right; a first cleaning component disposed in the first cleaning chamber; a second cleaning component disposed in the second cleaning chamber; a dryer disposed at the top of the storage chamber; a clamping component disposed at the front side of the cleaning box; and a guide plate disposed at the bottom of the cleaning box, wherein the guide plate is provided with a first driving component for driving the clamping component to move laterally.

[0006] Preferably, the left end of the cleaning box is provided with a receiving plate, the receiving plate has an L-shaped cross-section, and the receiving plate is provided with a clamp; a first isolation component is provided between the receiving plate and the first cleaning chamber, between the first cleaning chamber and the second cleaning chamber, and between the second cleaning chamber and the storage chamber; a first clearance opening is provided at the front end of the first cleaning chamber, a second clearance opening is provided at the front end of the second cleaning chamber, and a third clearance opening is provided at the front end of the storage chamber; a second isolation component is provided above the third clearance opening; and controllers are provided at both ends of the top surface of the cleaning box.

[0007] Preferably, the clamping assembly includes: a carrier box, the end of which facing the cleaning box has a fourth clearance opening; a carrier block disposed within the fourth clearance opening, and the interior of the carrier box has a second driving assembly for driving the carrier block to swing; a first electric gripper disposed on the top surface of the carrier box away from the cleaning box; and a second electric gripper disposed on the top surface of the carrier block. The first driving assembly includes: a carrier frame, the carrier box being disposed on top of the carrier frame; an electric roller disposed at the bottom of the carrier frame, the top surface of the guide plate having a slide rail, the electric roller extending into the slide rail and capable of rolling along the inner wall of the slide rail; and a protrusion fixedly disposed at the bottom of the carrier frame, the bottom surface of the protrusion having a first limiting groove, the top surface of the guide plate being fixedly disposed with a first limiting block, the top of the first limiting block extending into the first limiting groove and capable of sliding along the inner wall of the first limiting groove.

[0008] Preferably, the inner two opposite end faces of the fourth clearance opening are provided with stepped surfaces, and the inner end face of the fourth clearance opening facing the cleaning box is provided with an arc-shaped surface and a fifth clearance opening; the second drive assembly includes a first motor, the first motor is fixedly mounted on the inner wall of the carrier box, the output end of the first motor is fixedly connected to the first end of the swing rod, and the second end of the swing rod extends out of the carrier box through the fifth clearance opening and is fixedly connected to the carrier block.

[0009] Preferably, the first cleaning component includes: a first upright plate, the first upright plate including a vertical section and a horizontal section, the horizontal section being located at the top front side of the vertical section, and the cross-section of the first upright plate being inverted L-shaped; a first liquid storage tank, disposed on the top surface of the horizontal section; a cleaning tank, disposed below the horizontal section, the top surface of the cleaning tank being open; and a stirring assembly, disposed inside the cleaning tank, the cleaning tank being provided with a third driving assembly for driving the stirring assembly to stir; the second cleaning component includes: a second upright plate; a second liquid storage tank, disposed on the top of the second upright plate, the bottom of the second liquid storage tank being provided with a liquid outlet pipe, the first end of the liquid outlet pipe being connected to the interior of the second liquid storage tank; and a cleaning box, disposed on the front side of the second upright plate, the top surface of the cleaning box being open, and the second end of the liquid outlet pipe extending into the cleaning box.

[0010] Preferably, the horizontal section has an internal liquid outlet channel, the top of which is connected to the interior of the first liquid storage tank, the bottom of which is located at the corner of the vertical section and the horizontal section and penetrates the bottom surface of the horizontal section, the bottom surface of the horizontal section slopes downward near the end of the vertical section, and the width of the bottom of the liquid outlet channel is greater than half the width of the horizontal section; a liquid guide plate is provided between the first vertical plate and the cleaning tank, the liquid guide plate is located at the rear edge of the top of the cleaning tank, the front center of the liquid guide plate has an arc-shaped notch, the rear surface of the liquid guide plate is in close contact with the front surface of the first vertical plate, and the inner surface of the arc-shaped notch is aligned with the inner surface of the cleaning tank.

[0011] Preferably, the cleaning tank includes: a lower shell, the top surface of which is open, and a drive port on the top of the lower shell; an upper shell, including a positioning ring and a first retaining ring, the positioning ring being disposed on the top of the lower shell and detachably connected to the lower shell, the first retaining ring being fixedly disposed below the positioning ring and located inside the lower shell, a gap existing between the first retaining ring and the inner wall of the lower shell, and a second limiting groove being provided on the bottom surface of the positioning ring, the second limiting groove being disposed between the first retaining ring and the inner wall of the lower shell; the stirring assembly includes: an annular rack, disposed between the lower shell and the first retaining ring, the annular rack being at the same height as the drive port, and a plurality of evenly distributed second limiting blocks being fixedly disposed on the top of the annular rack, the tops of the second limiting blocks extending into the... The second limiting groove is located within the second limiting groove and can slide along the inner wall of the second limiting groove; a driving rod is located below the annular rack, the cross-section of the driving rod is L-shaped, the first end of the driving rod is fixedly connected to the annular rack, and there are several driving rods, which are evenly distributed at equal intervals; a stirring plate is located below the annular rack, the second end of the driving rod is fixedly connected to the stirring plate, and several radially evenly distributed stirring plates are fixedly provided on the top surface of the stirring plate; the third driving assembly includes: a second motor, fixedly installed on the outer wall of the lower housing and located below the driving port, with the output end of the second motor facing upward; a gear, fixedly installed at the output end of the second motor, the gear and the driving port are at the same height, and the gear meshes with the annular rack for transmission.

[0012] Preferably, a second retaining ring is fixedly disposed on the inner bottom surface of the lower housing and below the first retaining ring. A sixth clearance opening is formed between the second retaining ring and the first retaining ring. The second end of the drive rod extends through the sixth clearance opening to the inner side of the second retaining ring. The second end of the drive rod can slide along the bottom surface of the first retaining ring and the top surface of the second retaining ring. The bottom of the second retaining ring is provided with a plurality of first through holes distributed at equal intervals. The top surface of the stirring plate is a concave surface. The stirring plate is provided with a plurality of second through holes evenly distributed in a ring shape. The second through holes penetrate the top surface and the bottom surface of the stirring plate. There is a gap between the bottom surface of the stirring plate and the inner bottom surface of the lower housing.

[0013] Preferably, the cleaning tank is equipped with a waste liquid collection assembly, which includes: a first collection box located below the first and second cleaning chambers; a first drain pipe located at the bottom of the cleaning tank, with its first end connected to the interior of the cleaning tank and its second end extending into the first collection box; a second drain pipe located at the bottom of the cleaning box, with its first end connected to the interior of the cleaning box and its second end extending into the first collection box; and a second collection box located at the bottom of the storage chamber, with its top surface open, detachably connected to the cleaning tank, and slidable along the inner wall of the storage chamber.

[0014] Preferably, the first collection box is provided with a partition, which divides the interior of the first collection box into a first drainage chamber and a second drainage chamber. The second end of the first drainage pipe extends into the first drainage chamber, and the second end of the second drainage pipe extends into the second drainage chamber. The outside of the first collection box is provided with a third drainage pipe and a fourth drainage pipe. The third drainage pipe is connected to the first drainage chamber, and the fourth drainage pipe is connected to the second drainage chamber. Both the third drainage pipe and the fourth drainage pipe are located on the side away from the storage chamber.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (i) When the present invention is used, the connecting tube completes two cleaning and sterilization operations through the first cleaning component and the second cleaning component. There will be no sputum residue inside or outside the connecting tube. Finally, the free end of the connecting tube will be stored in the storage chamber. The interior of the storage chamber can be isolated from the outside world to ensure that the connecting tube will not be contaminated when it is stored.

[0017] (II) In use, after the free end of the connecting tube extends into the cleaning tank, the stirring component rotates to stir the sterilizing liquid in the cleaning tank, cleaning and sterilizing the outer surface of the connecting tube. The connecting tube sucks away the sterilizing liquid and sputum in the cleaning tank, cleaning and sterilizing the inner surface of the connecting tube. The sterilizing liquid in the first storage tank flows out from the bottom of the outlet channel and flows down along the front surface of the vertical section of the first upright plate. Even if sputum splashes onto the front surface of the vertical section of the first upright plate, it will be washed away by the sterilizing liquid.

[0018] (III) In this invention, the first collection box is equipped with a partition, which divides the interior of the first collection box into a first drain chamber and a second drain chamber. The sterilization liquid flowing out of the first drain pipe and the sterilization liquid flowing out of the second drain pipe flow into the first drain chamber and the second drain chamber respectively, and will not meet. Therefore, the sterilization liquid flowing out of the first drain pipe will not communicate with the interior of the cleaning box through the second drain pipe, and secondary contamination will not occur between the cleaning tank and the cleaning box after cleaning and sterilization. Attached Figure Description

[0019] Figure 1 This is an isometric view of the invention from one angle;

[0020] Figure 2 This is an isometric view of the invention from another angle;

[0021] Figure 3 An isometric view of the invention with the clamping assembly holding the connecting tube in place;

[0022] Figure 4 Left sectional view of the invention as the connecting pipe is moved into the first cleaning chamber;

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 Left sectional view of the invention as the connecting pipe is moved into the second cleaning chamber;

[0025] Figure 7 Left sectional view of the invention as the connecting pipe is moved into the third cleaning chamber;

[0026] Figure 8 This is an isometric view of the invention with the connecting pipe in the retracted state.

[0027] Figure 9 An isometric view of the cleaning chamber in this invention at one angle when the first isolation component is closed;

[0028] Figure 10 An isometric view of the cleaning chamber in this invention from another angle when the first isolation component is open;

[0029] Figure 11 This is an isometric view of the first cleaning component in this invention;

[0030] Figure 12 This is an exploded isometric view of the cleaning tank in this invention;

[0031] Figure 13 for Figure 12 Enlarged view of point B in the middle;

[0032] Figure 14 This is a left sectional view of the upper housing in this invention;

[0033] Figure 15 This is an isometric view of the stirring assembly in this invention;

[0034] Figure 16 This is an isometric view of the second cleaning component in this invention;

[0035] Figure 17 This is an isometric view of the clamping component and the first driving component in this invention;

[0036] Figure 18 This is an isometric sectional view of the clamping assembly in this invention;

[0037] Figure 19 This is an isometric view of the bearing box in this invention;

[0038] Figure 20 This is an exploded isometric view of the waste liquid collection component in this invention.

[0039] The reference numerals in the figures include:

[0040] 1-Cleaning box, 11-First cleaning chamber, 12-Second cleaning chamber, 13-Storage chamber, 14-Receiving plate, 141-Clamp, 15-First isolation assembly, 16-First clearance port, 17-Second clearance port, 18-Third clearance port, 19-Second isolation assembly, 110-Controller, 2-First cleaning assembly, 21-First upright plate, 211-Liquid outlet channel, 22-First liquid storage tank, 23-Cleaning tank, 231-Lower shell, 2311-Drive port, 2312-Second 23121-First through hole, 232-Upper shell, 2321-Positioning ring, 23211-Second limiting groove, 2322-First retaining ring, 233-Sixth clearance opening, 234-First drain pipe, 24-Stirring assembly, 241-Annular rack, 242-Second limiting block, 243-Drive rod, 244-Stirring disc, 2441-Stirring plate, 2442-Second through hole, 25-Third drive assembly, 251-Second motor, 252-Gear, 26-Liquid guide Flow plate, 261-arc-shaped notch, 3-second cleaning component, 31-second vertical plate, 32-second liquid storage tank, 33-liquid outlet pipe, 34-cleaning box, 35-second drain pipe, 4-dryer, 5-clamping component, 51-carrying box, 511-fourth clearance opening, 512-step surface, 513-arc-shaped surface, 514-fifth clearance opening, 52-carrying block, 53-second drive component, 531-first motor, 532-swing arm, 54-first electric gripper, 55-second electric... 6-clamping claw, 6-guide plate, 61-slide rail, 62-first limiting block, 7-first drive assembly, 71-bearing frame, 72-electric roller, 73-protrusion, 731-first limiting groove, 8-waste liquid collection assembly, 81-first collection box, 811-partition, 812-first sewage chamber, 813-second sewage chamber, 814-third sewage pipe, 815-fourth sewage pipe, 82-second collection box, 9-wall negative pressure belt, 91-negative pressure device, 92-spittoon, 10-connecting pipe. Detailed Implementation

[0041] 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.

[0042] Please see Figure 1-20This invention provides a technical solution: an automatic cleaning device for suction tubes, comprising a cleaning box 1, a first cleaning component 2, a second cleaning component 3, a dryer 4, a clamping component 5, a guide plate 6, and a first driving component 7. The clamping component 5 is located at the front of the cleaning box 1 and is used to clamp the suction tube 10 containing sputum. The guide plate 6 is located at the bottom of the cleaning box 1, and the first driving component 7 is mounted on the guide plate 6 to drive the clamping component 5 to move laterally. The interior of the cleaning box 1, from left to right, comprises a first cleaning chamber 11, a second cleaning chamber 12, and a storage chamber 13 (in the front-back, left-right directions as shown). Figure 1-2 (As shown). The first cleaning component 2 is located in the first cleaning chamber 11 and is used for the first cleaning and sterilization of the connecting tube 10. The second cleaning component 3 is located in the second cleaning chamber 12 and is used for the second cleaning and sterilization of the connecting tube 10. The dryer 4 is located at the top of the storage chamber 13 and can dry the connecting tube 10. During the process of the first driving component 7 driving the clamping component 5 to move from left to right, the clamping component 5 first drives the connecting tube 10 through the first cleaning chamber 11 and the second cleaning chamber 12 in sequence to complete the two cleaning and sterilization operations, and there will be no sputum residue inside or outside the connecting tube 10. Next, the clamping component 5 drives the connecting tube 10 to move into the storage chamber 13. After the dryer 4 dries the connecting tube 10, the free end of the connecting tube 10 will be stored in the storage chamber 13. The interior of the storage chamber can be isolated from the outside to ensure that the connecting tube 10 will not be contaminated when it is stored.

[0043] Please see Figure 1 and Figure 9 The left end of the cleaning box 1 is provided with a receiving plate 14, and a clip 141 is provided on the receiving plate 14. A removable disposable plastic film can be clamped onto the receiving plate 14 by the clip 141. Please refer to Figure 1 and Figure 3 In use, the clamping component 5 is initially positioned in front of the receiving plate 14. When cleaning and disinfecting the connecting tube 10 after suctioning is required, the clamping component 5 first clamps the connecting tube 10. At this time, the free end of the connecting tube 10 is located above the receiving plate 14. In this embodiment, the cross-section of the receiving plate 14 is L-shaped, and the disposable plastic film clamped on the receiving plate 14 is also L-shaped. Therefore, the free end of the connecting tube 10 will not extend to the rear of the cleaning box 1. Even if sputum drips from the free end of the connecting tube 10, it will be caught by the disposable plastic film. After the connecting tube 10 enters the first cleaning chamber 11, medical staff can remove and discard the contaminated disposable plastic film and clamp a new one.

[0044] Please see Figure 2 and Figure 9-10A first isolation component 15 is provided between the receiving plate 14 and the first cleaning chamber 11, between the first cleaning chamber 11 and the second cleaning chamber 12, and between the second cleaning chamber 12 and the storage chamber 13. The first isolation component 15 can adjust the first cleaning chamber 11, the second cleaning chamber 12, and the storage chamber 13 to be connected or disconnected. The front end of the first cleaning chamber 11 is provided with a first clearance opening 16, the front end of the second cleaning chamber 12 is provided with a second clearance opening 17, and the front end of the storage chamber 13 is provided with a third clearance opening 18. The first isolation component 15 includes two opposing first electric telescopic rods. The first electric telescopic rods are fixed to the rear side wall of the cleaning box 1, and a baffle is fixedly provided at the output end of the first electric telescopic rod. The cleaning box 1 has an installation groove for mounting the baffle. When both first electric telescopic rods in the first isolation assembly 15 shorten simultaneously, the first isolation assembly 15 changes from a closed state to an open state, allowing the connecting pipe 10 to enter the interior of the cleaning box 1 or move laterally inside the cleaning box 1. At this time, the connecting pipe 10 will move inside the three clearance openings, thus preventing it from colliding with the cleaning box 1. Please refer to... Figure 9-10 In this embodiment, two first isolation components 15 are provided between the second cleaning chamber 12 and the storage chamber 13 to further ensure the airtightness of the storage chamber 13 and prevent the interior of the storage chamber 13 from being contaminated.

[0045] Please see Figure 1 , Figure 3 and Figure 8-9 Above the third clearance opening 18, a second isolation component 19 is provided. The second isolation component 19 includes a second electric telescopic rod, which is fixed to the front side wall of the cleaning chamber 1. A first sealing plate is fixedly installed at the output end of the second electric telescopic rod. The bottom of the first sealing plate has a positioning notch. The front surface of the cleaning chamber 1 has an mounting groove for assembling the sealing plate, and a second sealing plate is provided on the back of the sealing plate. When the connecting pipe 10 does not enter the storage chamber 13, the second electric telescopic rod extends, causing the first and second sealing plates to move downwards simultaneously, blocking the third clearance opening 18 and isolating the storage chamber 13 from the outside world. When the connecting pipe 10 needs to enter the storage chamber 13, the second electric telescopic rod shortens, causing the first and second sealing plates to move upwards simultaneously, exposing the third clearance opening 18. Please refer to [link to relevant documentation]. Figure 8 When the connecting pipe 10 enters the storage chamber 13, the second electric telescopic rod shortens, causing only the first sealing plate to move downwards. The connecting pipe 10 then enters the positioning notch, and the first sealing plate blocks the third clearance opening 18, thus sealing the storage chamber 13 and isolating it from the outside world. At this time, the connecting pipe 10 is in a retracted state, and its free end remains inside the storage chamber 13 and will not be contaminated. Please refer to [link / reference]. Figure 1 In this embodiment, the front side of the first cleaning chamber 11 and the second cleaning chamber 12 is not provided with an isolation component. In other embodiments, the front side of the first cleaning chamber 11 and the second cleaning chamber 12 may also be provided with an isolation component.

[0046] When suctioning is needed again using the connecting tube 10, the second electric telescopic rod shortens, causing the first sealing plate to move upward, exposing the third clearance opening 18. Next, the clamping assembly 5 releases the connecting tube 10, which can then be removed from the storage chamber 13 by medical personnel. Please refer to [link to relevant documentation]. Figure 1-2 Both ends of the top surface of the cleaning box 1 are equipped with controllers 110, and both controllers 110 can control the operating status of various parts of the invention. Initially, when the connecting tube 10 containing sputum is clamped by the clamping assembly 5, it is controlled by the left controller 110, which may therefore be contaminated. When medical personnel need to remove the cleaned and sterilized connecting tube 10 from the storage chamber 13, their hands have been disinfected and sterilized, and the right controller 110 can be used to operate the device, ensuring that the connecting tube 10 is not contaminated during removal.

[0047] Please see Figure 1 , Figure 3 and Figure 17-18 The clamping assembly 5 includes a carrier box 51, a carrier block 52, a second drive assembly 53, a first electric gripper 54, and a second electric gripper 55. The carrier block 52 is disposed within a fourth clearance opening 511 on the carrier box 51, and the second drive assembly 53 is disposed inside the carrier box 51 for driving the carrier block 52 to swing. In use, the invention clamps or releases the connecting pipe 10 by closing and opening the first electric gripper 54 and the second electric gripper 55. (See also...) Figure 4 and Figure 6-7 When the clamping assembly 5 clamps the connecting pipe 10, and the second drive assembly 53 drives the carrier block 52 to swing, the carrier block 52 drives the free end of the connecting pipe 10 to swing upward or downward via the second electric gripper 55. Please refer to [link / reference]. Figure 3-4 and Figure 6-7 When the first electric gripper 54 and the second electric gripper 55 close and clamp the connecting tube 10, there is a gap between the first electric gripper 54 and the second electric gripper 55 and the connecting tube 10. Therefore, when the second electric gripper 55 swings, the connecting tube 10 can slide relative to the first electric gripper 54 and the second electric gripper 55, and the connecting tube 10 will not be torn due to the change in the distance between the two grippers.

[0048] Please see Figure 18-19 The second drive assembly 53 includes a first motor 531. The output end of the first motor 531 is fixedly connected to the first end of the swing arm 532. The second end of the swing arm 532 extends out of the carrier box 51 through the fifth clearance opening 514 and is fixedly connected to the carrier block 52. When the second drive assembly 53 is in operation, the forward and reverse rotation of the first motor 531 drives the swing arm 532 to swing upward or downward, thereby driving the carrier block 52 to swing. (See also...) Figure 18-19The fourth clearance opening 511 has stepped surfaces 512 on its two opposite inner end faces. These stepped surfaces 512 increase the width of the fourth clearance opening 511, preventing the second electric gripper 55 from colliding with the carrier box 51 when the carrier block 52 swings. (Please refer to...) Figure 19 The inner side of the fourth clearance opening 511 facing the cleaning box 1 has an arc-shaped surface 513 and a fifth clearance opening 514. When the support block 52 swings, the support block 52 can slide along the arc-shaped surface 513, increasing the stability of the support block 52. In addition, the edges of the fourth clearance opening 511 are all rounded, and the connecting pipe 10 can also contact the arc-shaped surface 513. The connecting pipe 10 will not touch the sharp edges, extending the service life of the connecting pipe 10.

[0049] Please see Figure 1 , Figure 3 , Figure 8-9 and Figure 17 The first driving assembly 7 includes a support frame 71, an electric roller 72, and a protrusion 73. The support box 51 is fixedly connected to the support frame 71. A slide rail 61 is provided on the top surface of the guide plate 6, and the electric roller 72 extends into the slide rail 61. A first limiting groove 731 is provided on the bottom surface of the protrusion 73, and a first limiting block 62 is fixedly provided on the top surface of the guide plate 6. In use, the electric roller 72 rotates clockwise or counterclockwise within the slide rail 61, driving the support frame 71 to move left or right. The support frame 71, through the clamping assembly 5, drives the connecting pipe 10 to move left or right. During the movement of the support frame 71, the protrusion 73 slides along the outer surface of the first limiting block 62, preventing the support frame 71 from tilting and ensuring its stability during movement. The support frame 71 will not detach from the guide plate 6.

[0050] Please see Figure 11 The first cleaning component 2 includes a first vertical plate 21, a first liquid storage tank 22, a cleaning tank 23, a stirring component 24, and a third drive component 25. The first vertical plate 21 includes a vertical section and a horizontal section. The first liquid storage tank 22 is located on the top surface of the horizontal section, and an inlet pipe (not shown) is provided on the first liquid storage tank 22 for adding sterilizing solution. The stirring component 24 is located inside the cleaning tank 23, and the third drive component 25 is located on the outer wall of the cleaning tank 23 for driving the stirring component 24 to perform stirring.

[0051] Please see Figure 3-4 When the first isolation component 15 between the receiving plate 14 and the first cleaning chamber 11 is opened, the first driving component 7 can drive the connecting tube 10 into the first cleaning chamber 11 by driving the clamping component 5, and the connecting tube 10 is then cleaned and sterilized for the first time by the first cleaning component 2. Please refer to Figure 4After the connecting tube 10 enters the first cleaning chamber 11, the first isolation component 15 between the receiving plate 14 and the first cleaning chamber 11 closes. Next, the second drive component 53 operates, causing the support block 52 to swing downwards. This, in turn, causes the free end of the connecting tube 10 to swing downwards via the second electric gripper 55, extending into the cleaning tank 23. Immediately afterward, the sterilizing solution in the first storage tank 22 flows quantitatively into the cleaning tank 23, submerging the free end of the connecting tube 10. At this time, the third drive component 25 operates, driving the stirring component 24 to operate. The stirring component 24 rotates to stir the sterilizing solution in the cleaning tank 23. While the sterilizing solution moves within the cleaning tank 23 under the influence of the stirring component 24, it carries away the sputum on the outer surface of the connecting tube 10, cleaning and sterilizing the outer surface of the connecting tube 10. Please refer to [link / reference]. Figure 3-4 During this process, the negative pressure device 91 on the wall negative pressure belt 9 operates, creating a negative pressure environment inside the sputum container 92. The sterilizing solution and sputum in the cleaning tank 23 are then suctioned away through the connecting pipe 10. As the sterilizing solution passes through the inside of the connecting pipe 10, it cleans and sterilizes the inner surface of the pipe. After most of the sterilizing solution in the cleaning tank 23 has been suctioned away, the sterilizing solution in the first storage tank 22 flows back into the cleaning tank 23 in a measured amount, and the above operation is repeated to ensure that no sputum residue remains inside or outside the connecting pipe 10. The entire process can be repeated 2-4 times.

[0052] After the sterilizing solution in the cleaning tank 23 is finally drawn away through the connecting pipe 10, the second drive assembly 53 operates, causing the free end of the connecting pipe 10 to swing upward. The first isolation assembly 15 between the first cleaning chamber 11 and the second cleaning chamber 12 opens, and the first drive assembly 7 operates, using the clamping assembly 5 to drive the connecting pipe 10 into the second cleaning chamber 12. The second cleaning assembly 3 then performs a second cleaning and sterilization on the connecting pipe 10. At this time, the sterilizing solution in the first storage tank 22 flows back into the cleaning tank 23 in a measured amount. The stirring assembly 24 operates to stir the sterilizing solution, and finally, the cleaning tank 23 discharges the sterilizing solution. This process cleans and sterilizes the interior of the cleaning tank 23.

[0053] Please see Figure 4 The first vertical plate 21 has a liquid outlet channel 211 inside the horizontal section at its top. An electrically controlled valve is installed at the top of the liquid outlet channel 211 to allow for the metered outflow of sterilizing solution from the first storage tank 22. The bottom of the liquid outlet channel 211 is located at the corner of the vertical and horizontal sections and extends through the bottom surface of the horizontal section. The sterilizing solution flowing out of the first storage tank 22 via the electrically controlled valve flows out from the bottom of the liquid outlet channel 211 and down the front surface of the vertical section of the first vertical plate 21, eventually flowing into the cleaning tank 23. Therefore, even if sputum splashes onto the front surface of the vertical section of the first vertical plate 21, it will be washed away by the sterilizing solution. Please refer to [link / reference]. Figure 11A liquid guide plate 26 is provided between the first vertical plate 21 and the cleaning tank 23. The liquid guide plate 26 has an arc-shaped notch 261 at its front center, and the inner surface of the arc-shaped notch 261 is aligned with the inner surface of the cleaning tank 23. The sterilization liquid flowing downwards along the front surface of the vertical section of the first vertical plate 21 will first flow onto the liquid guide plate 26 and then into the cleaning tank 23. In this embodiment, the top surface of the liquid guide plate 26 is concave downwards, so the sterilization liquid on the top surface of the liquid guide plate 26 will not flow outside the cleaning tank 23.

[0054] Please see Figure 11-12 The cleaning tank 23 includes a lower housing 231 and an upper housing 232. The upper housing 232 includes a positioning ring 2321 and a first retaining ring 2322, with the first retaining ring 2322 fixedly disposed below the positioning ring 2321. (See also...) Figure 12-14 The lower housing 231 has a drive port 2311 on its top, and the positioning ring 2321 has a second limiting groove 23211 on its bottom surface. (See also...) Figure 4 , Figure 11 and Figure 15 The stirring assembly 24 includes an annular rack 241, second limiting blocks 242, a drive rod 243, and a stirring disc 244. The annular rack 241 is located between the lower housing 231 and the first retaining ring 2322, and is at the same height as the drive port 2311. Several evenly distributed second limiting blocks 242 are fixedly disposed on the top of the annular rack 241, with the tops of the second limiting blocks 242 extending into the second limiting groove 23211 and sliding along the inner wall of the second limiting groove 23211. The drive rod 243 is located below the annular rack 241, and has an L-shaped cross-section. The first end of the drive rod 243 is fixedly connected to the annular rack 241. The stirring disc 244 is located below the annular rack 241, and the second end of the drive rod 243 is fixedly connected to the stirring disc 244. Several radially evenly distributed stirring plates 2441 are fixedly disposed on the top surface of the stirring disc 244. (See also...) Figure 11-12 The third drive assembly 25 includes a second motor 251 and a gear 252. The second motor 251 is fixedly mounted on the outer side wall of the lower housing 231, and the gear 252 is fixedly mounted on the output end of the second motor 251. The gear 252 extends into the drive port 2311 and meshes with the ring rack 241 for transmission.

[0055] Please see Figure 4 and Figure 11-15When the free end of the connecting pipe 10 extends into the cleaning tank 23, the third drive assembly 25 operates. The second motor 251 drives the gear 252 to rotate, and the gear 252 drives the annular rack 241 to rotate. The annular rack 241 drives the second limiting block 242 at the top to slide along the inner wall of the second limiting groove 23211. There are gaps between the annular rack 241 and the first retaining ring 2322 and the lower housing 231, so it will not collide with the inner wall of the cleaning tank 23. The annular rack 241 drives the stirring disc 244 and the stirring plate 2441 to rotate together through the drive rod 243, stirring the sterilization solution in the cleaning tank 23.

[0056] Please see Figure 4-5 and Figure 12-13 A second retaining ring 2312 is fixedly disposed on the inner bottom surface of the lower housing 231, below the first retaining ring 2322. A sixth clearance opening 233 is formed between the second retaining ring 2312 and the first retaining ring 2322, and the second end of the drive rod 243 extends through the sixth clearance opening 233 to the inner side of the second retaining ring 2312. Please refer to [link / reference]. Figure 4-5 When the annular rack 241 drives the drive rod 243 to rotate, the second end of the drive rod 243 slides along the top surface of the second retaining ring 2312 and the bottom surface of the first retaining ring 2322. The second retaining ring 2312 can provide support force to the drive rod 243 and increase the stability of the stirring assembly 24 when it rotates.

[0057] Please see Figure 5 and Figure 13 The bottom of the second retaining ring 2312 is provided with several equally spaced first through holes 23121. Since the sterilizing liquid flows into the space between the lower housing 231 and the first retaining ring 2322 through the sixth clearance port 233, when the sterilizing liquid needs to be discharged from the cleaning tank 23, it can flow out through the first through holes 23121. (The sterilizing liquid flows into the cleaning tank 23 in a measured amount; the sterilizing liquid will not contact the annular rack 241.) Please refer to [link / reference]. Figure 4-5 and Figure 15 The top surface of the mixing plate 244 is concave, and several annularly distributed second through holes 2442 are provided on the mixing plate 244. The second through holes 2442 penetrate the top and bottom surfaces of the mixing plate 244, and there is a gap between the bottom surface of the mixing plate 244 and the inner bottom surface of the lower shell 231. The sterilization solution on the top surface of the mixing plate 244 can flow through the second through holes 2442 to the bottom of the mixing plate 244, facilitating the discharge of the sterilization solution into the cleaning tank 23.

[0058] Please see Figure 6 , Figure 10 and Figure 16The second cleaning component 3 includes a second upright plate 31, a second liquid storage tank 32, a liquid outlet pipe 33, and a cleaning box 34. The second liquid storage tank 32 is located at the top of the second upright plate 31, and the liquid outlet pipe 33 is located at the bottom of the second liquid storage tank 32. The first end of the liquid outlet pipe 33 is connected to the interior of the second liquid storage tank 32, and the first end of the liquid outlet pipe 33 is equipped with an electrically controlled valve to realize the quantitative outflow of sterilization solution from the second liquid storage tank 32. The cleaning box 34 is located on the front side of the second upright plate 31, and the top surface of the cleaning box 34 is open, with the second end of the liquid outlet pipe 33 extending into the cleaning box 34.

[0059] Please see Figure 6 After the first drive assembly 7 drives the connecting tube 10 into the second cleaning chamber 12 via the clamping assembly 5, the first isolation assembly 15 between the first cleaning chamber 11 and the second cleaning chamber 12 closes. Next, the second drive assembly 53 operates, causing the support block 52 to swing downwards, which in turn causes the free end of the connecting tube 10 to swing downwards and extend into the cleaning box 34 via the second electric gripper 55. Immediately afterwards, the sterilizing solution in the second storage tank 32 flows quantitatively into the cleaning box 34, submerging the free end of the connecting tube 10. Then, the second drive assembly 53 operates, causing the support block 52 to swing up and down, performing secondary cleaning and sterilization on the outer surface of the connecting tube 10. During this process, the negative pressure device 91 on the wall negative pressure belt 9 operates, sucking away the sterilizing solution and sputum in the cleaning box 34 together through the connecting tube 10, while the sterilizing solution performs secondary cleaning and sterilization on the inner surface of the connecting tube 10.

[0060] After the connecting tube 10 draws away the sterilization solution in the cleaning box 34, the second drive assembly 53 operates, causing the free end of the connecting tube 10 to swing upwards. Simultaneously, the two first isolation components 15 between the second cleaning chamber 12 and the storage chamber 13, and the second isolation component 19 above the third clearance opening 18, open. The first drive assembly 7 operates, using the clamping assembly 5 to drive the connecting tube 10 into the storage chamber 13. Immediately afterwards, the two first isolation components 15 between the second cleaning chamber 12 and the storage chamber 13, and the second isolation component 19 above the third clearance opening 18, close simultaneously, and the connecting tube 10 is dried by the dryer 4.

[0061] Please see Figure 2 and Figure 7The storage chamber 13 has a vent on its right side wall, with a filter screen inside. Moist air generated during drying can be exhausted outside the storage chamber 13 through the vent, while dust from outside the cleaning box 1 is blocked by the filter screen and cannot enter the storage chamber 13. Simultaneously, the sterilizing solution in the second storage tank 32 flows back into the cleaning box 34 in a measured amount. Finally, the cleaning box 34 discharges the sterilizing solution, a process that cleans and sterilizes the interior of the cleaning box 34. At this time, the free end of the connecting tube 10 is stored inside the storage chamber 13, isolating the interior of the storage chamber from the outside and ensuring that the connecting tube 10 is not contaminated when it is stored.

[0062] Please see Figure 1-10 and Figure 20 The cleaning tank 1 is equipped with a waste liquid collection assembly 8, which includes a first collection box 81 and a second collection box 82. The first collection box 81 is located below the first cleaning chamber 11 and the second cleaning chamber 12. The bottom of the cleaning tank 23 is equipped with a first drain pipe 234, and the bottom of the cleaning box 34 is equipped with a second drain pipe 35. The second collection box 82 is located at the bottom of the storage chamber 13. Both the first drain pipe 234 and the second drain pipe 35 are equipped with electrically controlled valves. When the connecting pipe 10 is cleaned and sterilized, the electrically controlled valves on the first drain pipe 234 and the second drain pipe 35 are in the closed state. When the cleaning tank 23 and the cleaning box 34 are cleaned and sterilized, the electrically controlled valves on the first drain pipe 234 and the second drain pipe 35 are in the open state, and the sterilization liquid in the cleaning tank 23 and the cleaning box 34 can flow into the first collection box 81 through the first drain pipe 234 and the second drain pipe 35. When the connecting tube 10 is dried, the sterilization liquid dripping from the free end of the connecting tube 10 will fall into the second collection box 82. Simply pull the second collection box 82 forward to remove it and pour out the sterilization liquid inside.

[0063] Please see Figure 4-6 and Figure 20 The first collection box 81 is equipped with a partition 811, which divides the interior of the first collection box 81 into a first drain chamber 812 and a second drain chamber 813. The second end of the first drain pipe 234 extends into the first drain chamber 812, and the second end of the second drain pipe 35 extends into the second drain chamber 813. Therefore, the sterilization solution flowing out of the first drain pipe 234 and the sterilization solution flowing out of the second drain pipe 35 flow into the first drain chamber 812 and the second drain chamber 813 respectively, and will not meet. Therefore, the sterilization solution flowing out of the first drain pipe 234 will not communicate with the interior of the cleaning box 34 through the second drain pipe 35, and secondary contamination will not occur between the cleaning tank 23 and the cleaning box 34 after cleaning and sterilization.

[0064] Please see Figure 1-2 and Figure 20The outer side of the first collection box 81 is provided with a third drain pipe 814 and a fourth drain pipe 815. The third drain pipe 814 is connected to the first drain chamber 812, and the fourth drain pipe 815 is connected to the second drain chamber 813. Both the third drain pipe 814 and the fourth drain pipe 815 are equipped with drain valves, allowing the sterilization solution in the first drain chamber 812 and the second drain chamber 813 to be discharged outside the cleaning box 1 through the third drain pipe 814 and the fourth drain pipe 815, respectively. The third drain pipe 814 and the fourth drain pipe 815 are both located on the side away from the storage chamber 13, further reducing the risk of contamination of the storage chamber 13.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0066] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic cleaning device for a suction tube, characterized in that, include: The cleaning box contains, from left to right, a first cleaning chamber, a second cleaning chamber, and a storage chamber. A first cleaning component is disposed within the first cleaning chamber; A second cleaning component is provided in the second cleaning chamber; A dryer is located at the top of the storage chamber; A clamping assembly is located on the front side of the cleaning box; A guide plate is provided at the bottom of the cleaning box, and the guide plate is provided with a first drive component for driving the clamping assembly to move laterally; The left end of the cleaning box is provided with a receiving plate, the receiving plate has an L-shaped cross-section, and the receiving plate is provided with clips; A first isolation component is provided between the receiving plate and the first cleaning chamber, between the first cleaning chamber and the second cleaning chamber, and between the second cleaning chamber and the storage chamber; The first cleaning chamber has a first clearance opening at its front end, the second cleaning chamber has a second clearance opening at its front end, and the storage chamber has a third clearance opening at its front end. A second isolation component is provided above the third clearance opening; The cleaning box is equipped with controllers at both ends of its top surface; The clamping assembly includes: A carrier box, wherein the end of the carrier box facing the cleaning box is provided with a fourth clearance opening; A support block is disposed within the fourth clearance opening, and the interior of the support box is provided with a second drive assembly for driving the support block to swing. The first electric gripper is located on the top surface of the carrier box at the end away from the cleaning box; The second electric gripper is located on the top surface of the bearing block; The first driving component includes: A support frame, wherein the support box is located on top of the support frame; An electric roller is provided at the bottom of the support frame. The top surface of the guide plate is provided with a slide rail. The electric roller extends into the slide rail and can roll along the inner wall of the slide rail. A protrusion is fixedly installed at the bottom of the support frame. The bottom surface of the protrusion is provided with a first limiting groove. The top surface of the guide plate is fixedly provided with a first limiting block. The top of the first limiting block extends into the first limiting groove and can slide along the inner wall of the first limiting groove. The first cleaning component includes: The first upright plate includes a vertical section and a horizontal section, the horizontal section being located on the front side of the top of the vertical section, and the cross-section of the first upright plate is inverted L-shaped. The first liquid storage tank is located on the top surface of the horizontal section; A cleaning tank is located below the horizontal section, and the top surface of the cleaning tank is open; A stirring assembly is disposed inside the cleaning tank, and the cleaning tank is provided with a third driving assembly for driving the stirring assembly to stir. The second cleaning component includes: Second upright board; The second liquid storage tank is located on the top of the second vertical plate, and the bottom of the second liquid storage tank is provided with a liquid outlet pipe. The first end of the liquid outlet pipe is connected to the interior of the second liquid storage tank. A cleaning box is located on the front side of the second upright plate. The top surface of the cleaning box is open, and the second end of the liquid outlet tube extends into the cleaning box. After the connecting tube enters the first cleaning chamber, the first isolation component between the receiving plate and the first cleaning chamber closes. Next, the second drive component operates, causing the support block to swing downwards. This, in turn, causes the free end of the connecting tube to swing downwards via the second electric gripper and extend into the cleaning tank. Immediately afterward, the sterilizing liquid in the first storage tank flows into the cleaning tank in measured amounts, submerging the free end of the connecting tube. At this time, the third drive component operates, driving the stirring component to operate. The stirring component rotates to stir the sterilizing liquid in the cleaning tank. As the sterilizing liquid moves within the cleaning tank under the action of the stirring component, it carries away the sputum on the outer surface of the connecting tube and cleans and sterilizes the outer surface of the connecting tube. During this process, the negative pressure device on the wall negative pressure belt operates, creating a negative pressure environment inside the sputum container. The sterilizing liquid and sputum in the cleaning tank are sucked away together through the connecting tube. As the sterilizing liquid passes through the inside of the connecting tube, it cleans and sterilizes the inner surface of the connecting tube.

2. The automatic cleaning device for the suction connecting tube according to claim 1, characterized in that, The inner side of the fourth clearance opening has two opposite end faces with stepped surfaces. The inner side of the fourth clearance opening facing the cleaning box has an arc-shaped surface and a fifth clearance opening. The second drive assembly includes a first motor. The first motor is fixedly installed on the inner wall of the carrier box. The output end of the first motor is fixedly connected to the first end of the swing arm. The second end of the swing arm extends out of the carrier box through the fifth clearance opening and is fixedly connected to the carrier block.

3. The automatic cleaning device for the suction connecting tube according to claim 1, characterized in that, The horizontal section has an internal liquid outlet channel. The top of the liquid outlet channel is connected to the interior of the first liquid storage tank. The bottom of the liquid outlet channel is located at the corner of the vertical section and the horizontal section and penetrates the bottom surface of the horizontal section. The bottom surface of the horizontal section slopes downward near the end of the vertical section. The width of the bottom of the liquid outlet channel is greater than half the width of the horizontal section. A liquid guide plate is provided between the first upright plate and the cleaning tank. The liquid guide plate is located at the rear edge of the top of the cleaning tank. The front center of the liquid guide plate has an arc-shaped notch. The rear surface of the liquid guide plate is in close contact with the front surface of the first upright plate. The inner surface of the arc-shaped notch is aligned with the inner surface of the cleaning tank.

4. The automatic cleaning device for the suction connecting tube according to claim 1, characterized in that, The cleaning tank includes: The lower housing has an open top surface and a drive port at its top. The upper housing includes a positioning ring and a first retaining ring. The positioning ring is disposed on the top of the lower housing and is detachably connected to the lower housing. The first retaining ring is fixedly disposed below the positioning ring and located on the inner side of the lower housing. There is a gap between the first retaining ring and the inner wall of the lower housing. The bottom surface of the positioning ring is provided with a second limiting groove, which is disposed between the first retaining ring and the inner wall of the lower housing. The stirring assembly includes: A ring-shaped rack is disposed between the lower housing and the first retaining ring. The ring-shaped rack and the drive port are at the same height. A plurality of evenly distributed second limiting blocks are fixedly disposed on the top of the ring-shaped rack. The top of the second limiting blocks extends into the second limiting groove and can slide along the inner wall of the second limiting groove. A drive rod is located below the annular rack. The cross-section of the drive rod is L-shaped. The first end of the drive rod is fixedly connected to the annular rack. There are several drive rods, and the drive rods are evenly distributed at equal intervals. A stirring disc is located below the annular rack, and the second end of the drive rod is fixedly connected to the stirring disc. Several stirring plates are fixedly arranged radially and evenly on the top surface of the stirring disc. The third driving component includes: The second motor is fixedly mounted on the outer wall of the lower housing and located below the drive port, with the output end of the second motor facing upwards; A gear is fixedly mounted at the output end of the second motor. The gear and the drive port are at the same height, and the gear meshes with the ring rack for transmission.

5. The automatic cleaning device for the suction connecting tube according to claim 4, characterized in that, A second retaining ring is fixedly disposed on the inner bottom surface of the lower housing and below the first retaining ring. A sixth clearance opening is formed between the second retaining ring and the first retaining ring. The second end of the drive rod extends through the sixth clearance opening to the inner side of the second retaining ring. The second end of the drive rod can slide along the bottom surface of the first retaining ring and the top surface of the second retaining ring. The bottom of the second retaining ring is provided with a plurality of first through holes distributed at equal intervals. The top surface of the mixing plate is concave, and the mixing plate is provided with a plurality of second through holes evenly distributed in a ring. The second through holes penetrate the top and bottom surfaces of the mixing plate, and there is a gap between the bottom surface of the mixing plate and the inner bottom surface of the lower shell.

6. The automatic cleaning device for the suction connecting tube according to claim 1, characterized in that, The cleaning tank is equipped with a waste liquid collection component, which includes: A first collection box is located below the first cleaning chamber and the second cleaning chamber. The bottom of the cleaning tank is provided with a first drain pipe. The first end of the first drain pipe is connected to the inside of the cleaning tank, and the second end of the first drain pipe extends into the first collection box. The bottom of the cleaning box is provided with a second drain pipe. The first end of the second drain pipe is connected to the inside of the cleaning box, and the second end of the second drain pipe extends into the first collection box. The second collection box is located at the bottom of the storage chamber. The top surface of the second collection box is open. The second collection box is detachably connected to the cleaning box and can slide along the inner wall of the storage chamber.

7. The automatic cleaning device for the suction connecting tube according to claim 6, characterized in that, The first liquid collection box is provided with a partition, which divides the interior of the first liquid collection box into a first sewage discharge chamber and a second sewage discharge chamber. The second end of the first sewage discharge pipe extends into the first sewage discharge chamber, and the second end of the second sewage discharge pipe extends into the second sewage discharge chamber. The first collection box is provided with a third drain pipe and a fourth drain pipe on its outer side. The third drain pipe is connected to the first drain chamber, and the fourth drain pipe is connected to the second drain chamber. Both the third drain pipe and the fourth drain pipe are located on the side away from the storage chamber.

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