A drainage device

Abstract

The present invention relates to a drainage device, including a fluid accumulation box, a pumping assembly, a drainage hose and a storage mechanism, wherein the pumping assembly is arranged on the fluid accumulation box, the drainage hose extends to the outside of the fluid accumulation box, the storage mechanism is used to store the drainage hose, the storage mechanism includes a bottom plate and a bending assembly, the bottom plate is connected to the fluid accumulation box, the bending assembly includes a support unit, a first transmission unit, a limit unit, a driving member, a screw and a second transmission unit, the support unit is connected to the side of the fluid accumulation box, the driving member and the first transmission unit are arranged at the bottom of the support unit, the two ends of the screw are respectively connected to the driving member and the bottom plate, and the screw and the first transmission unit form a threaded fit, the limit unit is movably connected to the first transmission unit and has a channel for the drainage hose to pass through, and the second transmission unit is connected to the first transmission unit. The present invention can make the drainage hose move and bend as a whole through the storage mechanism and form a U-shaped state to be stored on the side of the fluid accumulation box, which is convenient to store, simple in structure and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of medical auxiliary tools, and in particular relates to a drainage device. Background Art

[0002] In the field of clinical medicine, especially in surgery-related departments, drainage devices play a vital role. Drainage devices are used for drainage or flushing in clinical surgery departments. They are a kind of medical auxiliary tool for draining various wounds, body cavities, etc. to discharge accumulated fluids, blood or gases, etc., to prevent local infection and accelerate the recovery of patients.

[0003] In the prior art, the accumulated fluid is generally sucked out through the drainage tube on the drainage device. However, when the drainage device is not in use, it is inconvenient to store the drainage tube, resulting in a large footprint of the drainage device. Moreover, when the drainage tube is not properly stored, it may be too long, twisted, etc., resulting in poor drainage, which can significantly affect the suction effect and the patient's recovery process. Therefore, a more convenient, reliable, and easy-to-store drainage device is urgently needed to meet the needs of clinical medicine. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a drainage device, which effectively solves the problem that it is inconvenient to store the drainage tube when the drainage device is not in use.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A drainage device comprises a fluid accumulation box, a pumping assembly, a drainage hose and a storage mechanism, wherein the pumping assembly is arranged on the top of the fluid accumulation box, one end of the drainage hose is connected to the pumping assembly, and the other end thereof extends to the outside of the fluid accumulation box, and the storage mechanism is arranged on the side of the fluid accumulation box for storing the drainage hose, the storage mechanism comprises a bottom plate and a bending assembly, the bottom plate is connected to the side of the fluid accumulation box, the bending assembly comprises a supporting unit, a first transmission unit, a limiting unit, a driving member, a screw rod and a second transmission unit, the supporting unit is connected to the side of the fluid accumulation box, the driving member and the first transmission unit are arranged at the bottom of the supporting unit, the two ends of the screw rod are respectively connected to the driving member and the bottom plate, and the screw rod passes through the first transmission unit and forms a threaded fit therewith, the limiting unit is movably connected to the first transmission unit and has a channel for the drainage hose to pass through, and the second transmission unit is connected to the first transmission unit.

[0007] Preferably, the support unit includes a sleeve, a first round rod and a support tube, the sleeve is connected to the side of the fluid collection box, both ends of the first round rod are connected to the sleeve, the support tube is rotatably arranged on the first round rod, and the outer surface of the support tube can support the drainage hose.

[0008] Further preferably, the first transmission unit includes a lifting rod and a lifting plate, the top end of the lifting rod is connected to the bottom of the sleeve plate, the bottom end of the lifting rod is connected to the bottom plate, the lifting plate is slidably arranged on the lifting rod, and the lifting rod is sleeved with a first spring, and the first spring is located between the sleeve plate and the lifting plate.

[0009] Further preferably, the limit unit includes a limit seat, a limit turntable and a limit roller, the limit seat can be slidably set on the lifting rod, and the limit seat is located above the lifting plate, the limit turntable and the limit roller can be rotatably set on the limit seat, and a channel for the drainage hose to pass through is formed between the two.

[0010] Further preferably, the second transmission unit includes a second round rod, a sliding rod, a guide column and a guide block, the second round rod is located below the base plate and both ends of the second round rod pass through the base plate and are movably connected to the lifting plate, the sliding rod is rotatably connected to the second round rod, a through groove is provided on the base plate, the guide column is arranged in the through groove, the guide block is slidably arranged on the guide column, and the sliding rod passes through the through groove and is connected to the guide block.

[0011] Still further preferably, the second transmission unit also includes an abutment plate, a transmission rod and a slide plate, the abutment plate is arranged on the base plate, one end of the transmission rod is connected to the abutment plate, and the other end of the transmission rod is connected to the base plate, the slide plate is slidably arranged on the transmission rod, a second spring is arranged on the transmission rod, and the second spring is located between the abutment plate and the slide plate.

[0012] Still further preferably, the second transmission unit also includes a first abutment column and a second abutment column, one end of the first abutment column is connected to the guide block, and the other end of the first abutment column extends toward the slide plate, one end of the second abutment column is connected to the slide plate, and the other end of the second abutment column extends toward the abutment plate.

[0013] Preferably, the storage mechanism further comprises a supporting assembly, wherein the supporting assembly is arranged on the bending assembly, and the supporting assembly is used to support the end of the drainage hose.

[0014] Further preferably, the support assembly includes a vertical plate, a support shaft and a limiting cylinder, the vertical plate is connected to the bending assembly, the support shaft is rotatably connected to the side of the vertical plate, and the limiting cylinder is arranged on the support shaft.

[0015] Preferably, the drainage device further comprises a protection mechanism, wherein the protection mechanism is connected to the storage mechanism, and the protection mechanism is used to protect the end of the drainage hose after being bent and stored.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0017] (1) When the drainage hose needs to be stored in the drainage device of the present invention, the storage mechanism starts to work, that is, through the cooperation between the bending component and the supporting component, the drainage hose is moved as a whole and approaches the fluid collection box, so that the drainage hose can form a U-shaped state and be stored on the side of the fluid collection box. The storage is convenient, the degree of automation is high, the structure is simple and the reliability is good, which improves the convenience of use.

[0018] (2) The drainage device of the present invention is provided with a protective mechanism, that is, when the storage mechanism drives the drainage hose to bend, it can simultaneously drive the protective mechanism to work, so that after the drainage hose is bent, the protective mechanism can be sleeved on the end of the drainage hose to form effective protection, thereby further improving the storage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] Figure 1 It is a schematic diagram of the structure of the drainage device of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the storage mechanism of the drainage device of the present invention;

[0022] Figure 3 It is a structural schematic diagram of a bending assembly of the drainage device of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the bending assembly and the supporting assembly of the drainage device of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the protection mechanism of the drainage device of the present invention;

[0025] Figure 6 It is a schematic structural diagram of the support assembly of the drainage device of the present invention.

[0026] In the above attached figure:

[0027] 1. Fluid accumulation box; 10. Drainage tube; 2. Base; 3. Pumping assembly; 31. Suction pump; 32. Infusion tube; 4. Drainage hose; 5. Storage mechanism; 50. Bottom plate; 501. Support column; 51. Bending assembly; 511. Support unit; 5111. Sleeve plate; 5112. First round rod; 5113. Support cylinder; 512. First transmission unit; 5121. Lifting rod; 5122. Lifting plate; 5123. First spring; 513. Limiting unit; 5131. Limiting seat; 5132. Limiting turntable; 5133. Limiting roller; 514. Driving member; 515. Screw; 516. Second transmission unit; 5161. Second round rod; 5162 , sleeve block; 5163, sliding rod; 5164, guide column; 5165, guide block; 5166, abutment plate; 5167, transmission rod; 5168, slide plate; 5169, second spring; 5171, first abutment column; 5172, second abutment column; 52, support assembly; 521, vertical plate; 5210, slide groove; 522, support shaft; 523, limit cylinder; 524, sliding rod; 525, rack; 526, gear; 527, screw; 528, turntable; 529, screw sleeve; 6, protection mechanism; 61, movable frame; 62, connecting rod; 63, top plate; 64, protection cylinder; 65, third round rod; 66, fixing ring; 67, third spring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] A drainage device includes a fluid collection box 1, a base 2, a pumping assembly 3, a drainage hose 4 and a storage mechanism 5. The fluid collection box 1 is arranged on the base 2 and is located at a side of the base 2. An infusion port and a discharge port are provided on the fluid collection box 1. The discharge port is located at the lower side of the fluid collection box 1. A discharge tube 10 is installed at the discharge port. The infusion port is located at the top of the fluid collection box 1. The pumping assembly 3 is arranged at the infusion port. The pumping assembly 3 is connected to one end of the drainage hose 4, and the other end of the drainage hose 4 extends to the outside of the fluid collection box 1. The storage mechanism 5 is arranged on the base 2 and is located at the side of the fluid collection box 1. The storage mechanism 5 is used to store and organize the drainage hose 4.

[0030] In some specific embodiments, the pumping component 3 includes a fluid pump 31 and an infusion tube 32. The fluid pump 31 is fixedly arranged on the top of the fluid effusion box 1. One end of the infusion tube 32 is connected to the infusion port of the fluid effusion box 1, and the other end of the infusion tube 32 is connected to the fluid pump 31. The fluid pump 31 is connected to one end of the drainage hose 4.

[0031] In some specific embodiments, a metal soft strip is bonded to the outer wall of the drainage hose 4 to prevent the drainage hose 4 from turning over, winding or coiling, thereby significantly improving the smoothness of the flow of the effusion.

[0032] In some specific embodiments, the storage mechanism 5 includes a bottom plate 50, a bending assembly 51 and a supporting assembly 52, wherein the bending assembly 51 is used to bend the drainage hose 4, and the supporting assembly 52 is used to support the end of the drainage hose 4. Specifically:

[0033] The bottom plate 50 is arranged above the base 2 , one end of the bottom plate 50 is fixedly connected to the side of the fluid collection box 1 , and the other end of the bottom plate 50 is connected to the base 2 through two support columns 501 , that is, a gap is formed between the bottom plate 50 and the base 2 .

[0034] The bending assembly 51 includes a support unit 511, a first transmission unit 512, a limit unit 513, a driving member 514, a screw rod 515 and a second transmission unit 516. The support unit 511 is arranged above the bottom plate 50, and the support unit 511 is connected to the side of the fluid collection box 1. The driving member 514 is arranged at the bottom of the support unit 511. The screw rod 515 extends in the vertical direction, and one end of the screw rod 515 is connected to the output shaft of the driving member 514, and the other end of the screw rod 515 is rotatably connected to the bottom plate 50. The first transmission unit 512 is connected to the support unit 511. The bottom of the element 511 is connected to the first transmission unit 512, and the first transmission unit 512 is connected to the bottom plate 50. The screw rod 515 passes through the first transmission unit 512 and forms a threaded fit therewith. The limiting unit 513 is movably connected to the first transmission unit 512. The limiting unit 513 has a passage for the drainage hose 4 to pass through. The second transmission unit 516 is connected to the first transmission unit 512. The support assembly 52 is connected to the second transmission unit 516, so that the drainage hose 4 can be supported on the support unit 511 and then pass through the passage of the limiting unit 513, and its end is supported by the support assembly 52. ​​When the driving member 514 is working, it drives the screw rod 515 to rotate, drives the first transmission unit 512 to work and drive the limiting unit 513 to move downward, and at the same time, the first transmission unit 512 works to drive the second transmission unit 516, driving the support assembly 52 to approach the first transmission unit 512, so that the end of the drainage hose 4 approaches accordingly, thereby bending the drainage hose 4.

[0035] The support unit 511 specifically includes a sleeve plate 5111, a first round rod 5112 and a support tube 5113. The side of the sleeve plate 5111 is fixedly connected to the side of the fluid collection box 1. The first round rod 5112 is in an inverted U shape, and both ends of the first round rod 5112 are fixedly connected to the top of the sleeve plate 5111. The support tube 5113 is rotatably arranged in the middle of the first round rod 5112, and the outer surface of the support tube 5113 can support the drainage hose 4.

[0036] The first transmission unit 512 specifically includes a pair of lifting rods 5121 and a lifting plate 5122. The top end of the lifting rod 5121 is fixedly connected to the bottom of the sleeve plate 5111, and the bottom end of the lifting rod 5121 is fixedly connected to the bottom plate 50. The pair of lifting rods 5121 are symmetrically arranged, and the two ends of the lifting plate 5122 are respectively slidably mounted on the pair of lifting rods 5121; the lifting rod 5121 is mounted with a first spring 5123, and the first spring 5123 is located between the sleeve plate 5111 and the lifting plate 5122.

[0037] The limiting unit 513 specifically includes a limiting seat 5131, a limiting turntable 5132 and a limiting roller 5133. The two ends of the limiting seat 5131 are respectively slidably mounted on a pair of lifting rods 5121, and the limiting seat 5131 is located above the lifting plate 5122, so that the first spring 5123 is located between the sleeve plate 5111 and the limiting seat 5131; the limiting turntable 5132 and the limiting roller 5133 are both rotatably arranged on the limiting seat 5131, and the limiting turntable 5132 and the limiting roller 5133 are distributed in the up and down directions, and the limiting turntable 5132 is located above the limiting roller 5133, and a channel is formed between the two for the drainage hose 4 to pass through.

[0038] The driving member 514 is fixedly arranged at the bottom of the sleeve plate 5111 and is located between a pair of lifting rods 5121. The driving member 514 can be, for example, a driving motor, but is not limited to this embodiment; the screw rod 515 extends in the vertical direction, one end of the screw rod 515 is fixedly connected to the output shaft of the driving member 514, and a threaded hole is provided on the lifting plate 5122. The screw rod 515 passes through the lifting plate 5122 and the outer thread of the screw rod 515 forms a threaded fit with the threaded hole of the lifting plate 5122. The other end of the screw rod 515 is rotatably connected to the base plate 50.

[0039] The second transmission unit 516 specifically includes a second round rod 5161, a sleeve block 5162, a sliding rod 5163, a guide column 5164 and a guide block 5165. The second round rod 5161 is U-shaped and is located below the base plate 50. Both ends of the second round rod 5161 pass through the base plate 50 and are movably connected to the bottom of the lifting plate 5122. The sleeve block 5162 is fixedly arranged in the middle of the second round rod 5161. One end of the sliding rod 5163 is rotatably connected to the sleeve block 5162. A through groove 501 is provided on the base plate 50. The guide column 5164 is fixedly connected in the through groove 501. The guide block 5165 is slidably arranged on the guide column 5164. The other end of the sliding rod 5163 passes through the through groove 501 and is connected to the bottom of the guide block 5165.

[0040] The second transmission unit 516 also includes an abutment plate 5166, a transmission rod 5167 and a slide plate 5168. The abutment plate 5166 is fixedly arranged on the base plate 50 and is located on a side close to the first transmission unit 512. The transmission rod 5167 is L-shaped. A pair of transmission rods 5167 are provided. The pair of transmission rods 5167 are symmetrically arranged on the left and right. One end of the transmission rod 5167 is fixedly connected to the side of the abutment plate 5166, and the other end of the transmission rod 5167 is fixedly connected to the base plate 50. The slide plate 5168 is slidably arranged on the pair of transmission rods 5167. Each transmission rod 5167 is provided with a second spring 5169, and the second spring 5169 is located between the abutment plate 5166 and the slide plate 5168.

[0041] The second transmission unit 516 also includes a first abutment column 5171 and a second abutment column 5172, one end of the first abutment column 5171 is fixedly connected to the guide block 5165, and the other end of the first abutment column 5171 extends horizontally toward the slide plate 5168, one end of the second abutment column 5172 is fixedly connected to the slide plate 5168, and the other end of the second abutment column 5172 extends horizontally toward the abutment plate 5166; in some specific embodiments, a pair of second abutment columns 5172 are provided, and the pair of second abutment columns 5172 are horizontally symmetrically distributed.

[0042] The support assembly 52 includes a vertical plate 521, a support shaft 522 and a limiting cylinder 523. The top of the slide plate 5168 is fixedly connected to the vertical plate 521, one side of the vertical plate 521 is rotatably connected to the support shaft 522, and the limiting cylinder 523 is fixed to the end of the support shaft 522 away from the vertical plate 521. By setting the limiting cylinder 523, it is convenient to provide limiting support for the end of the drainage hose 4, and with the cooperation of the limiting unit 513, the drainage hose 4 can be prevented from becoming scattered.

[0043] The following specifically describes the storage working process of the drainage device of the present invention:

[0044] In the initial state, the top of the lifting plate 5122 fits with the bottom of the limiting seat 5131, the two first springs 5123 are in a compressed state, the end of the first abutting column 5171 abuts against the sliding plate 5168, and the two second springs 5169 are in a stretched state; when the drainage hose 4 needs to be stored, the driving member 514 is first started to drive the screw rod 515 to rotate, thereby driving the lifting plate 5122 to slide downward along the first round rod 5112, thereby releasing the restriction effect on the limiting seat 5131. At this time, the two first springs 5123 are reset, driving the limiting seat 5131 to slide downward along the first round rod 5112, so that the limiting turntable 5132 and the limiting roller 5133 move downward, so that the drainage hose 4 between the two is bent. At the same time, when the lifting plate 5122 descends, it pushes the second round rod 5161 to drive the sleeve block 5162 to move downward, and drives the guide block 5165 to slide along the guide column 5164 and approach the abutment plate 5166 through the sliding rod 5163. At the same time, the first abutment column 5171 moves horizontally to release the restriction effect on the slide plate 5168. At this time, the two second springs 5169 are reset, driving the slide plate 5168 to slide along a pair of transmission rods 5167, and driving the support assembly 52 to move, so that the drainage hose 4 moves as a whole and approaches the fluid accumulation box 1 until the second abutment column 5172 abuts against the abutment plate 5166. At this time, the limit seat 5131 descends to the top of the abutment plate 5166, so that the drainage hose 4 forms a U-shaped state and is stored on the side of the fluid accumulation box 1.

[0045] In some specific embodiments, the drainage device further includes a protection mechanism 6, and the protection mechanism 6 is used to protect the end of the drainage hose 4 after being bent and stored. The protection mechanism 6 specifically includes a movable frame 61, a connecting rod 62, a top plate 63 and a protective tube 64. The two ends of the movable frame 61 are respectively slidably mounted on a pair of lifting rods 5121, and the movable frame 61 is located below the lifting plate 5122. The top surface height of the movable frame 61 is lower than the top surface height of the abutment plate 5166. A pair of connecting rods 62 are provided. The pair of connecting rods 62 are symmetrically arranged on the left and right sides of the movable frame 61. The connecting rod 62 is L-shaped. One end of the connecting rod 62 is fixedly connected to the movable frame 61, and the other end of the connecting rod 62 is connected to the top plate 63. The protective tube 64 is arranged at the bottom of the top plate 63, and the opening of the protective tube 64 faces downward; the protection mechanism 6 also includes a third round rod 65, the third round rod 65 is in an inverted U shape, both ends of the third round rod 65 pass through the top plate 63 and are connected to the bottom plate 50, the two bending parts of the third round rod 65 are fixedly sleeved with a fixing ring 66, and a third spring 67 is sleeved on the third round rod 65 between the fixing ring 66 and the top plate 63. When the lifting plate 5122 descends so that the limit seat 5131 is located at the top of the abutment plate 5166, the second abutment column 5172 abuts against the abutment plate 5166, and the drainage hose 4 forms a U-shaped state and is stored in the side of the fluid collection box 1. Then the lifting plate 5122 continues to descend to push the movable frame 61, and drives the top plate 63 to slide downward along the third round rod 65 through two connecting rods 62. At the same time, the protective tube 64 descends until it is sleeved on the end of the drainage hose 4 to form effective protection.

[0046] In some specific embodiments, the support assembly 52 also includes a slide rod 524, both ends of which are fixedly connected to the vertical plate 521, and there is a gap between the middle of the slide rod 524 and the vertical plate 521. A rack 525 is slidably provided on the slide rod 524, and the toothed side of the rack 525 faces upward. A gear 526 is coaxially fixedly installed on the support shaft 522, and the gear 526 and the rack 525 are meshed with each other; a slide groove 5210 is provided on the side of the vertical plate 521 close to the slide rod 524, and a screw rod 527 is rotatably connected in the slide groove 5210, one end of the screw rod 527 extends to the outside of the vertical plate 521, and one end of the screw rod 527 is fixedly connected to a turntable 528, a screw sleeve 529 is sleeved on the screw rod 527, and the screw sleeve 529 and the screw 527 are threadedly matched, and the rack 525 is fixed to the outside of the screw sleeve 529. During operation, the turntable 528 can be rotated to drive the screw 527 to rotate, so that the screw sleeve 529 drives the rack 525 to slide along the slide bar 524. Since the rack 525 and the gear 526 are meshed with each other, the support shaft 522 can be driven to rotate, and then the drainage hose 4 can be driven to rotate through the limiting cylinder 523. When the rack 525 moves to the end of the slide bar 524, the end of the drainage hose 4 faces upward, so that the subsequent protective cylinder 64 can be sleeved on the end of the drainage hose 4 when it descends to form effective protection.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drainage device, characterized in that: The invention comprises a fluid collection box (1), a pumping assembly (3), a drainage hose (4) and a storage mechanism (5), wherein the pumping assembly (3) is arranged on the top of the fluid collection box (1), one end of the drainage hose (4) is connected to the pumping assembly (3), and the other end thereof extends to the outside of the fluid collection box (1), and the storage mechanism (5) is arranged on the side of the fluid collection box (1) for storing the drainage hose (4), and the storage mechanism (5) comprises a bottom plate (50) and a bending assembly (51), wherein the bottom plate (50) is connected to the side of the fluid collection box (1), and the bending assembly (51) comprises a supporting unit (511), a first transmission unit (512), a limiting unit (513), a driving member (514), and a plurality of driving members (515). 4), a screw rod (515) and a second transmission unit (516), the support unit (511) is connected to the side of the fluid collection box (1), the driving member (514) and the first transmission unit (512) are arranged at the bottom of the support unit (511), the two ends of the screw rod (515) are respectively connected to the driving member (514) and the bottom plate (50), and the screw rod (515) passes through the first transmission unit (512) and forms a threaded fit therewith, the limiting unit (513) is movably connected to the first transmission unit (512) and has a channel for the drainage hose (4) to pass through, and the second transmission unit (516) is connected to the first transmission unit (512).

2. The drainage device according to claim 1, characterized in that: The support unit (511) includes a sleeve (5111), a first round rod (5112) and a support tube (5113); the sleeve (5111) is connected to the side of the fluid collection box (1); both ends of the first round rod (5112) are connected to the sleeve (5111); the support tube (5113) is rotatably disposed on the first round rod (5112); and the outer surface of the support tube (5113) can support the drainage hose (4).

3. The drainage device according to claim 2, characterized in that: The first transmission unit (512) comprises a lifting rod (5121) and a lifting plate (5122); the top end of the lifting rod (5121) is connected to the bottom of the sleeve plate (5111); the bottom end of the lifting rod (5121) is connected to the bottom plate (50); the lifting plate (5122) is slidably arranged on the lifting rod (5121); a first spring (5123) is sleeved on the lifting rod (5121); and the first spring (5123) is located between the sleeve plate (5111) and the lifting plate (5122).

4. The drainage device according to claim 3, characterized in that: The limiting unit (513) comprises a limiting seat (5131), a limiting turntable (5132) and a limiting roller (5133); the limiting seat (5131) is slidably arranged on the lifting rod (5121), and the limiting seat (5131) is located above the lifting plate (5122); the limiting turntable (5132) and the limiting roller (5133) are both rotatably arranged on the limiting seat (5131), and a channel is formed between the two for the drainage hose (4) to pass through.

5. The drainage device according to claim 3, characterized in that: The second transmission unit (516) comprises a second round rod (5161), a sliding rod (5163), a guide column (5164) and a guide block (5165); the second round rod (5161) is located below the base plate (50) and its two ends pass through the base plate (50) and are movably connected to the lifting plate (5122); the sliding rod (5163) is rotatably connected to the second round rod (5161); a through groove (501) is provided on the base plate (50); the guide column (5164) is arranged in the through groove (501); the guide block (5165) is slidably arranged on the guide column (5164); the sliding rod (5163) passes through the through groove (501) and is connected to the guide block (5165).

6. The drainage device according to claim 5, characterized in that: The second transmission unit (516) also includes an abutment plate (5166), a transmission rod (5167) and a slide plate (5168), wherein the abutment plate (5166) is arranged on the base plate (50), one end of the transmission rod (5167) is connected to the abutment plate (5166), and the other end of the transmission rod (5167) is connected to the base plate (50), and the slide plate (5168) is slidably arranged on the transmission rod (5167), and a second spring (5169) is arranged on the transmission rod (5167), and the second spring (5169) is located between the abutment plate (5166) and the slide plate (5168).

7. The drainage device according to claim 6, characterized in that: The second transmission unit (516) also includes a first abutment column (5171) and a second abutment column (5172), wherein one end of the first abutment column (5171) is connected to the guide block (5165), and the other end of the first abutment column (5171) extends toward the slide plate (5168), and one end of the second abutment column (5172) is connected to the slide plate (5168), and the other end of the second abutment column (5172) extends toward the abutment plate (5166).

8. The drainage device according to claim 1, characterized in that: The storage mechanism (5) further comprises a support assembly (52), wherein the support assembly (52) is arranged on the bending assembly (51), and the support assembly (52) is used to support the end of the drainage hose (4).

9. The drainage device according to claim 8, characterized in that: The support assembly (52) comprises a vertical plate (521), a support shaft (522) and a limiting cylinder (523); the vertical plate (521) is connected to the bending assembly (51); the support shaft (522) is rotatably connected to the side of the vertical plate (521); and the limiting cylinder (523) is arranged on the support shaft (522).

10. The drainage device according to claim 1, characterized in that: The drainage device further comprises a protection mechanism (6), wherein the protection mechanism (6) is connected to the storage mechanism (5), and the protection mechanism (6) is used to protect the end of the drainage hose (4) after being bent and stored.

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