A portable negative pressure device

Abstract

The application relates to a portable negative pressure device, a first support, a second support, a first shell fixed on the first support, a second shell fixed on the second support, a cleaning mechanism fixed on the first shell, a conveying mechanism fixed on the first shell, an electric control mechanism fixed on the second shell, a storage mechanism fixed on the first shell and the second shell, the cleaning mechanism comprises a first cavity fixed on the first shell, a threaded rod fixed on the first shell, a first sliding groove fixed on the first shell, a second sliding groove fixed on the threaded rod, a baffle fixed on the first shell, a first sealing ring fixed on the baffle, a rotating assembly slidingly arranged on the first sliding groove and a driving assembly fixed on the rotating assembly, and the negative pressure device can be hung beside a nursing bed through the first support and the second support, so that the problem that the existing negative pressure device is not portable is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a portable negative pressure device. BACKGROUND

[0002] The negative pressure suction device is a tool that completes the suction effect by manufacturing the negative pressure state of the suction head through a certain method, extruding the substances outside the suction head to the suction head, and is used in various departments in the clinic, mainly for medical drainage, sputum, sewage blood and secretions.

[0003] In the hospital, the negative pressure suction device usually adopts the central negative pressure suction mode, which is suitable for patients who are long-term hospitalized and bedridden, and for patients who are not long-term hospitalized and need to be transferred, when leaving the ward, the central negative pressure suction cannot be used, so a portable negative pressure device is needed, which can be used for negative pressure suction. SUMMARY

[0004] The summary part of the present application is used to introduce the concept in a simple form, which will be described in detail in the specific embodiment part. The summary part of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] In order to solve the technical problems mentioned in the background part, some embodiments of the present application provide a portable negative pressure device, which comprises a first shell support, a second shell support, a first shell fixed on the first shell support, a second shell fixed on the second shell support, a cleaning mechanism arranged on the first shell, a conveying mechanism fixed on the first shell, an electric control mechanism fixed on the second shell, and a storage mechanism fixed on the first shell and the second shell.

[0006] The cleaning mechanism comprises a first cavity fixed on the first shell, a threaded rod fixed on the first shell, a first sliding groove fixed on the first shell, a second sliding groove fixed on the threaded rod, a baffle fixed on the first shell, a first sealing ring fixed on the baffle, a rotating assembly sliding on the first sliding groove, and a driving assembly fixed on the rotating assembly.

[0007] Specifically, the rotating assembly comprises a first support sliding on the first sliding groove, a second support sliding on the second sliding groove, a first mounting groove fixed on the first support and the second support, a connecting ring rotating on the first mounting groove, a plurality of rotating shafts rotating through the connecting ring, a first gear fixed on the rotating shaft, a rack fixed on the first mounting groove, a plurality of first brushes fixed on the rotating shaft, a bottom plate sleeved on one end of the rotating shaft, and a second brush fixed on the bottom plate.

[0008] Specifically, the driving assembly comprises a motor fixed on the second support, a second gear fixed on the motor, a plurality of limiting supports fixed on the second support, a first driving ring rotatably arranged on the limiting supports and engaged with the second gear and rotatably sleeved on the threaded rod, a rotating shaft support fixed on the second support, a third gear rotatably arranged on the rotating shaft support and engaged with the first driving ring, and a second driving ring sleeved on the other end of the rotating shaft and engaged with the third gear and the second gear.

[0009] Specifically, the conveying mechanism comprises a first hose fixed on the first shell and the second shell, a first through hole fixed on the second shell, a second through hole fixed on the second shell, a second hose fixed on the first shell, and a suction assembly fixed on the second hose.

[0010] Specifically, the suction assembly comprises a handle fixed on the second hose, a through slot fixed on the handle, a connecting pipe fixed on the handle, and an anti-blocking device fixed on the handle.

[0011] Specifically, the anti-blocking device comprises a second mounting groove fixed on the handle, a crushing plate slidably arranged on the second mounting groove, a plurality of third sliding grooves fixed on the handle, a plurality of guide rods fixed on the crushing plate and slidably arranged on the third sliding grooves, a third through hole fixed on the handle and communicating with the second mounting groove, a plurality of springs having one end fixed on the crushing plate and the other end fixed on the second mounting groove, and a second sealing ring fixed on the second mounting groove and the crushing plate.

[0012] Specifically, the electric control mechanism comprises a battery fixed on the second shell, an electric control board fixed on the second shell, an operation panel fixed on the second shell, a display screen fixed on the operation panel, a plurality of buttons fixed on the operation panel, a water pump fixed on the second shell, a vacuum pump fixed on the second shell, and a shunt valve fixed on the second shell.

[0013] Specifically, the storage mechanism comprises a second cavity fixed on the first shell, a flow guide surface fixed on the first shell, a cross valve fixed on the first shell, and a water tank fixed on the second shell.

[0014] The beneficial effects of the present application are:

[0015] (1) The motor works to drive the second gear to rotate, the second gear drives the first drive ring to rotate, the first drive ring is engaged with the threaded rod, so the first drive ring rotates and moves down along the threaded rod, because the first drive ring is arranged on the limiting support, the limiting support is fixed on the second support, so the second support slides down on the second sliding groove, and drives the first support to slide down on the first sliding groove through the connecting ring, the first support and the second support move down synchronously, because the first drive ring is engaged with the third gear, so the third gear rotates and the rotating direction is the same as the second gear, and then the second gear and the third gear drive the second drive ring to rotate, and the second drive ring is sleeved on the rotating shaft, so the rotating shaft revolves around the threaded rod, and then drives the connecting ring to rotate on the first mounting groove, and drives the bottom plate to rotate, when the rotating shaft revolves, the first gear rolls along the rack, that is, the rotating shaft rotates; the first shell inner wall side and bottom surface are cleaned in the process of moving down.

[0016] (2) When the coagulation blood block enters the through groove, because the blood block is clustered and has certain toughness, the through groove is easily blocked, so that the negative pressure device is disabled, when the through groove is blocked, the pipeline behind the blood block is in a sealed state, because the vacuum pump works, the air pressure of the pipeline behind the blood block continuously decreases, when the air pressure decreases to a certain extent, because the space formed by the crushing plate and the second mounting groove is connected with the outside through the third through hole, that is, the air pressure is normal atmospheric pressure, which is greater than the air pressure in the pipeline, so the crushing plate moves due to the pressure difference, and the blood block in the through groove is crushed and extruded, the spring is stretched, because the width of the crushing plate is less than the diameter of the through groove, when the crushing plate moves a distance, the side of the crushing plate provided with the guide rod is out of contact with the second mounting groove, that is, the through groove is partially connected, so that the internal and external air pressure gradually balances, the spring resets to pull the crushing plate to reset, and the function of automatically identifying pipeline blockage and dredging is realized.

[0017] (3) The first shell support and the second shell support can hang the negative pressure device beside the nursing bed, so that the problem that the existing negative pressure device is not portable is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0019] In addition, throughout the drawings, same or similar reference numerals are used to represent same or similar elements. It should be understood that the drawings are schematic, and the elements and elements are not necessarily drawn according to the proportion.

[0020] In the drawings:

[0021] Figure 1is a structural schematic view of the present application;

[0022] Figure 2 is a right view of the present application;

[0023] Figure 3 is Figure 2 is a line section view of A-A in the middle;

[0024] Figure 4 is Figure 2 is an isometric line section view of A-A in the middle;

[0025] Figure 5 is Figure 4 is a partial enlarged view at B in the middle;

[0026] Figure 6 is Figure 4 is a partial enlarged view at C in the middle;

[0027] Figure 7 is Figure 4 is a partial enlarged view at D in the middle;

[0028] Figure 8 is Figure 4 is a partial enlarged view at E in the middle;

[0029] Figure 9 is Figure 4 is a partial enlarged view at F in the middle. DETAILED DESCRIPTION

[0030] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms, and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly and completely understood. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes, and are not intended to limit the scope of protection of the present disclosure.

[0031] In addition, it should be further noted that only parts related to the present application are shown in the drawings for ease of description. The embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0032] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] It should be noted that the modification of "one", "multiple" in the present disclosure is illustrative and not restrictive, and those skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0034] The present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.

[0035] Referring to Figures 1-9 As shown in the figure, the portable negative pressure device comprises a first shell support 1, a second shell support 2, a first shell 3 fixed on the first shell support 1, a second shell 4 fixed on the second shell support 2, a cleaning mechanism 5 arranged on the first shell 3, a conveying mechanism 6 fixed on the first shell 3, an electric control mechanism 7 fixed on the second shell 4, and a storage mechanism 8 fixed on the first shell 3 and the second shell 4. The first shell support 1 and the second shell support 2 are structurally identical and are provided with hooks, so that the negative pressure device can be hung beside a nursing bed, solving the problem of insufficient portability of the existing negative pressure device. The first shell support 1 and the second shell support 2 are provided with U-shaped hooks on the outer sides, which can accommodate the conveying mechanism 6. The cleaning mechanism 5 is used to clean the storage mechanism 8 of the first shell 3. The conveying mechanism 6 is used to suck sputum or blood clots in surgery from patients. The storage mechanism 8 on the first shell 3 stores the sucked sputum or blood clots, and the storage mechanism 8 on the second shell 4 is used to store disinfectant water.

[0036] The cleaning mechanism 5 comprises a first cavity 51 fixed on the first shell 3, a threaded rod 52 fixed on the first shell 3, a first sliding groove 53 fixed on the first shell 3, a second sliding groove 54 fixed on the threaded rod 52, a baffle 55 fixed on the first shell 3, a first sealing ring 56 fixed on the baffle 55, a rotating assembly 57 slidingly arranged on the first sliding groove 53, and a driving assembly 58 fixed on the rotating assembly 57. The first cavity 51 is used to install the cleaning mechanism 5. The first sliding groove 53 and the second sliding groove 54 limit the rotating assembly 57. The sealing ring cooperates with the rotating assembly 57 to achieve sealing effect. The driving assembly 58 is used to drive the rotating assembly 57 to rotate. The rotating assembly 57 can rotate to clean the inner wall of the first shell 3.

[0037] Specifically, the rotating assembly 57 comprises a first support 571 slidingly arranged on the first sliding groove 53, a second support 572 slidingly arranged on the second sliding groove 54, a first mounting groove 573 fixedly arranged on the first support 571 and the second support 572, a connecting ring 574 rotatably arranged on the first mounting groove 573, a plurality of rotating shafts 575 rotatably arranged on the connecting ring 574, a first gear 576 fixedly arranged on the rotating shaft 575, a rack 577 fixedly arranged on the first mounting groove 573, a plurality of first brushes 578 fixedly arranged on the rotating shaft 575, a bottom plate 579 sleeved on one end of the rotating shaft 575, and a second brush fixedly arranged on the bottom plate 579. The first support 571 can slide along the first sliding groove 53, the first sliding groove 53 limits the first support 571, and the first support 571 cannot rotate. The second support 572 can slide along the second sliding groove 54, the second sliding groove 54 limits the second support 572, and the second support 572 cannot rotate. The first support 571 is not in contact with the second support 572, one side of the connecting ring 574 is in contact with the second support 572, and the other side is in contact with the first support 571. The connecting ring 574 can support the first support 571 and the second support 572. The rotating shaft 575 penetrates the connecting ring 574, the connecting ring 574 is sleeved on the rotating shaft 575, the rotating shaft 575 can rotate, and the connecting ring 574 can also drive the rotating shaft 575 to revolve around the threaded rod 52. The first gear 576 is engaged with the rack 577, and when the connecting ring 574 drives the rotating shaft 575 to revolve around the threaded rod 52, the rotating shaft 575 will also rotate due to the engagement between the first gear 576 and the rack 577. The first brush 578 is fixedly arranged on the rotating shaft 575, and when the rotating shaft 575 revolves and rotates, it rubs the inner wall of the first shell 3 to clean it. The bottom plate 579 is sleeved on one end of the rotating shaft 575, so that the rotating shaft 575 revolves to drive the bottom plate 579 to rotate. The second brush is arranged on the bottom surface of the bottom plate 579, and when the bottom plate 579 is in contact with the bottom surface of the inner wall of the first shell 3, it can clean the bottom surface of the inner wall of the first shell 3.

[0038] Specifically, the driving assembly 58 comprises a motor 581 fixed on the second support 572, a second gear 582 fixed on the motor 581, a plurality of limiting supports 583 fixed on the second support 572, a first driving ring 584 rotatably arranged on the limiting supports 583, rotatably engaged with the second gear 582 and rotatably sleeved on the threaded rod 52, a rotating shaft support 585 fixed on the second support 572, a third gear 586 rotatably arranged on the rotating shaft support 585 and rotatably engaged with the first driving ring 584, and a second driving ring 587 sleeved on the other end of the rotating shaft 575, rotatably engaged with the third gear 586 and rotatably engaged with the second gear 582. The motor 581 drives the second gear 582 to rotate, the second gear 582 drives the first driving ring 584 to rotate, the first driving ring 584 is rotatably engaged with the threaded rod 52, so that the first driving ring 584 rotates and moves downward along the threaded rod 52. Since the first driving ring 584 is rotatably arranged on the limiting supports 583, and the limiting supports 583 are fixed on the second support 572, the second support 572 also slides downward on the second sliding groove 54, and drives the first support 571 to slide downward on the first sliding groove 53 through the connecting ring 574. The first support 571 and the second support 572 move downward synchronously. Since the first driving ring 584 is rotatably engaged with the third gear 586, the third gear 586 rotates in the same direction as the second gear 582, and the second gear 582 and the third gear 586 drive the second driving ring 587 to rotate at the same time. Since the second driving ring 587 is sleeved on the rotating shaft 575, the rotating shaft 575 revolves around the threaded rod 52, thereby driving the connecting ring 574 to rotate on the first mounting groove 573, and driving the bottom plate 579 to rotate. When the rotating shaft 575 revolves, the first gear 576 rolls along the rack 577, i.e., the rotating shaft 575 rotates. The inner wall side and the bottom surface of the first shell 3 are cleaned during the downward movement.

[0039] Specifically, the conveying mechanism 6 comprises a first hose 61 fixed on the first shell 3 and the second shell 4, a first through hole 62 fixed on the second shell 4, a second through hole 63 fixed on the second shell 4, a second hose 64 fixed on the first shell 3, and a suction assembly 65 fixed on the second hose 64. The first shell 3 is used to balance the air pressure inside and outside the second shell 4, so that the vacuum pump 77 can work normally. The second through hole 63 is used for cleaning of the suction assembly 65. The second through hole 63 is provided with a valve. One end of the first hose 61 connected with the first shell 3 is provided with a valve. One end of the second hose 64 connected with the first shell 3 is provided with a valve.

[0040] Specifically, the suction assembly 65 comprises a handle 651 fixed on the second hose 64, a through slot 652 fixed on the handle 651, a connecting pipe 653 fixed on the handle 651, and a blocking prevention device 654 fixed on the handle 651. The handle 651 is used for being held by medical staff. The connecting pipe 653 can be directly used for sucking the coagulated blood clots, or a hose can be sleeved on the connecting pipe 653 for sucking sputum.

[0041] Specifically, the blocking prevention device 654 comprises a second mounting slot 6541 fixed on the handle 651, a crushing plate 6542 slidingly arranged in the second mounting slot 6541, a plurality of third sliding grooves 6543 fixed on the handle 651, a plurality of guide rods 6544 fixed on the crushing plate 6542 and slidingly arranged in the third sliding grooves 6543, a third through hole 6545 fixed on the handle 651 and communicating with the second mounting slot 6541, a plurality of springs 6546 having one end fixed on the crushing plate 6542 and the other end fixed on the second mounting slot 6541, and a second sealing ring 6547 fixed on the second mounting slot 6541 and the crushing plate 6542. The crushing plate 6542 can slide in the second mounting slot 6541 and is used for crushing the coagulated blood clots blocked in the through slot 652. The width of the crushing plate 6542 is smaller than the diameter of the through slot 652. The guide rods 6544 limit the crushing plate 6542. The second sealing ring 6547 is used for sealing the second mounting slot 6541 and the crushing plate 6542, preventing air leakage between the second mounting slot 6541 and the crushing plate 6542, and preventing insufficient negative pressure caused by air leakage of the suction pipeline. The third through hole 6545 is used for communicating the second mounting slot 6541 with the outside. The springs 6546 are used for resetting. When the coagulated blood clots enter the through slot 652, the blood clots are easy to block the through slot 652 due to the clumping and certain toughness of the blood clots, and the negative pressure device is disabled. When the through slot 652 is blocked, the pipeline behind the blood clots is in a sealed state. Due to the operation of the vacuum pump 77, the air pressure of the pipeline behind the blood clots continuously decreases. When the air pressure decreases to a certain extent, the space formed by the crushing plate 6542 and the second mounting slot 6541 communicates with the outside through the third through hole 6545, that is, the air pressure is the normal atmospheric pressure and is greater than the air pressure in the pipeline. Therefore, the crushing plate 6542 moves due to the air pressure difference, crushes and extrudes the blood clots in the through slot 652, the springs 6546 are stretched, the width of the crushing plate 6542 is smaller than the diameter of the through slot 652, the side of the crushing plate 6542 provided with the guide rods 6544 is separated from the second mounting slot 6541 after the crushing plate 6542 moves a distance, that is, the through slot 652 is partially communicated, the internal and external air pressures are gradually balanced, the air pressure difference is reduced, and the springs 6546 are reset to reset the crushing plate 6542, thereby realizing the functions of automatically identifying the pipeline blockage and dredging.

[0042] Specifically, the electric control mechanism 7 includes a battery 71 fixed on the second shell 4, an electric control board 72 fixed on the second shell 4, an operation panel 73 fixed on the second shell 4, a display screen 74 fixed on the operation panel 73, a plurality of buttons 75 fixed on the operation panel 73, a water pump 76 fixed on the second shell 4, a vacuum pump 77 fixed on the second shell 4, and a shunt valve 78 fixed on the second shell 4. The battery 71 can be charged and discharged, facilitating use in places without sockets. The electric control board 72 is used to control various valves and electric controls. The display screen 74 is used to display the working state. The buttons 75 are used to adjust parameters. One side of the shunt valve 78 is connected with the first hose 61, one end is connected with the vacuum pump 77, and one end is connected with the water pump 76. When the working state is negative pressure suction, the shunt valve 78 closes the valve connected with the water pump 76 and opens the valve connected with the vacuum pump 77. When in the cleaning state, the shunt valve 78 closes the valve connected with the vacuum pump 77 and opens the valve connected with the water pump 76. The water pump 76 can input the disinfectant water into the first shell 3 through the first hose 61, and cooperate with the cleaning mechanism to clean the inner wall of the first shell 3. When the hose is sleeved on the connecting pipe 653, the hose can be inserted into the water tank 84 from the second through hole 63. The water pump 76 is started to extract the disinfectant water in the water tank 84, so that the disinfectant water enters the connecting pipe 653, the through groove 652, the second hose 64, and finally the first shell 3, completing the cleaning of the through groove 652 and the first hose 61.

[0043] Specifically, the storage mechanism 8 includes a second cavity 81 fixed on the first shell 3, a flow guide surface 82 fixed on the first shell 3, a cross valve 83 fixed on the first shell 3, and a water tank 84 fixed on the second shell 4. The flow guide surface 82 is a slope, facilitating the discharge of dirt and disinfectant water in the first shell 3. The cross valve 83 is a prior art, which can be opened by pressing.

[0044] The above description is only some of the preferred embodiments of the present disclosure and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the application involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the above features and the technical features disclosed in the embodiments of the present disclosure (but not limited to) with similar functions are replaced with each other to form a technical solution.

Claims

1. A portable negative pressure device, characterized in that: The device comprises a first housing support (1), a second housing support (2), a first housing (3) fixed on the first housing support, a second housing (4) fixed on the second housing support, a cleaning mechanism (5) fixed on the first housing, a conveying mechanism (6) fixed on the first housing, an electric control mechanism (7) fixed on the second housing, and a storage mechanism (8) fixed on the first housing and the second housing; The cleaning mechanism comprises a first cavity (51) fixedly arranged on the first housing, a threaded rod (52) fixedly arranged on the first housing, a first slide groove (53) fixedly arranged on the first housing, a second slide groove (54) fixedly arranged on the threaded rod, a baffle (55) fixedly arranged on the first housing, a first sealing ring (56) fixedly arranged on the baffle, a rotating assembly (57) slidably arranged on the first slide groove, and a driving assembly (58) fixedly arranged on the rotating assembly; The rotating assembly includes a first bracket (571) slidably arranged on the first slide groove, a second bracket (572) slidably arranged on the second slide groove, a first mounting groove (573) fixedly arranged on the first bracket and the second bracket, a connecting ring (574) rotatably arranged on the first mounting groove, a plurality of rotating shafts (575) rotatably passing through the connecting ring, a first gear (576) fixedly arranged on the rotating shaft, a rack (577) fixedly arranged on the first mounting groove, a plurality of first brushes (578) fixedly arranged on the rotating shaft, a bottom plate (579) sleeved on one end of the rotating shaft, and a second brush fixedly arranged on the bottom plate; The driving assembly includes a motor (581) fixed on the second bracket, a second gear (582) fixed on the motor, a plurality of limit brackets (583) fixed on the second bracket, a first driving ring (584) rotatably mounted on the limit bracket and meshing with the second gear and rotatably sleeved on the threaded rod, a rotating shaft bracket (585) fixed on the second bracket, a third gear (586) rotatably mounted on the rotating shaft bracket and meshing with the first driving ring, and a second driving ring (587) sleeved on the other end of the rotating shaft and meshing with the third gear and the second gear.

2. A portable negative pressure device according to claim 1, characterized in that: The conveying mechanism comprises a first hose (61) fixedly arranged on the first shell and the second shell, a first through hole (62) fixedly arranged on the second shell, a second through hole (63) fixedly arranged on the second shell, a second hose (64) fixedly arranged on the first shell, and a suction assembly (65) fixedly arranged on the second hose.

3. A portable negative pressure device according to claim 2, characterized in that: The suction assembly comprises a handle (651) fixedly arranged on the second hose, a through slot (652) fixedly arranged on the handle, a connecting pipe (653) fixedly arranged on the handle, and an anti-blocking device (654) fixedly arranged on the handle.

4. A portable negative pressure device according to claim 3, characterized in that: The anti-blocking device includes a second mounting groove (6541) fixed on the handle, a crushing plate (6542) slidably arranged on the second mounting groove, a plurality of third sliding grooves (6543) fixed on the handle, a plurality of guide rods (6544) fixed on the crushing plate and slidably arranged on the third sliding grooves, a third through hole (6545) fixed on the handle and connected to the second mounting groove, a plurality of springs (6546) with one end fixed on the crushing plate and the other end fixed on the second mounting groove, and a second sealing ring (6547) fixed on the second mounting groove and the crushing plate.

5. The portable negative pressure device according to claim 1, characterized in that: The electric control mechanism comprises a battery (71) fixed on the second shell, an electric control board (72) fixed on the second shell, an operation panel (73) fixed on the second shell, a display screen (74) fixed on the operation panel, a plurality of buttons (75) fixed on the operation panel, a water pump (76) fixed on the second shell, a vacuum pump (77) fixed on the second shell, and a diverter valve (78) fixed on the second shell.

6. The portable negative pressure device according to claim 1, characterized in that: The storage mechanism comprises a second cavity (81) fixedly arranged on the first shell, a flow guide surface (82) fixedly arranged on the first shell, a cross valve (83) fixedly arranged on the first shell, and a water tank (84) fixedly arranged on the second shell.

Images