CN215504655U - Suction device - Google Patents

Abstract

The utility model discloses a suction device, which comprises a suction device body, wherein a negative pressure bottle fixing part is arranged on the suction device body, a negative pressure device for generating negative pressure is arranged in the suction device body, a negative pressure device fixing cavity is arranged in the suction device body, the negative pressure device is arranged in the negative pressure device fixing cavity, the negative pressure device comprises an elastic air bag, one end of the air bag is provided with an air suction pipe communicated with the interior of the air bag, and the suction device body is provided with a plurality of controllers and display panels which are in control connection with a control host machine, avoid the too much equipment damage that causes of drainage liquid.

Description

Suction device

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of medical equipment, in particular to the technical field of suction devices.

[ background of the utility model ]

The suction device is an instrument commonly used in clinic at present, but the suction device used at present has the problems of single function, inaccurate pressure regulation and the like, and cannot be well applied to clinic. The aspirator is used for aspirating and removing the contents of hemorrhage, exudate, pus and thoracic organs in the operation, so that the operation is clear, and the pollution chance is reduced. The principle of the suction apparatus is that the negative pressure state of the suction head is manufactured by a certain method, so that substances outside the suction head are squeezed towards the suction head by atmospheric pressure, and the suction effect is achieved.

Wherein, the Chinese utility model patent with the patent number of CN211434343U provides a novel negative pressure aspirator, which relates to the technical field of aspirators and comprises an aspirator main body, a first negative pressure bottle is placed in the placing groove on one side of the upper part of the aspirator main body, a second negative pressure bottle is placed in the placing groove on the other side of the upper part of the aspirator main body, the first negative pressure bottle is connected with an air suction pipe, an air filter is arranged on the air suction pipe, one end of the air suction pipe, which is far away from the first negative pressure bottle, is connected with the aspirator main body, the second negative pressure bottle is connected with an extension pipe, one end of the extension pipe is connected with a threaded pipe, a control panel is embedded in the top end of the aspirator main body, a push rod is fixedly arranged on the back side of the top end of the aspirator main body through screws, the utility model has smaller diameter of the suction hole in the suction head, which makes the suction more delicate and is not easy to block; the suction head is screwed in the threaded pipe through the connecting sleeve thread, so that the suction head is convenient to disassemble or assemble. However, the aspirator has a complex structure and a heavy weight, and is inconvenient to carry and use. In addition, the suction head of the suction apparatus is easily blocked by the tissue blocks and the blood clots, the suction port is easily closed by the tissue organs, after the suction port is closed, high negative pressure can cause mechanical damage to the tissue organs, the suction apparatus with the structure generates negative pressure through the negative pressure pump, the suction force of the negative pressure pump is general, the maintenance and the replacement are inconvenient, the maintenance and the deterioration cost are high, some waste liquid sucked out in the working process of the negative pressure pump has risk of entering the negative pressure pump, once the waste liquid enters the negative pressure pump, the negative pressure pump is polluted, the whole negative pressure pump needs to be replaced, the cost is high, no waste gas treatment equipment is provided, and no equipment specially used for monitoring the liquid content condition in a waste liquid bottle is provided.

[ Utility model ] content

The utility model aims to solve the problems in the prior art and provides a suction device which can improve the suction force of the suction device and improve the safety.

In order to achieve the above purpose, the utility model provides a suction device, which comprises a suction device body, wherein a negative pressure bottle fixing part is arranged on the suction device body, a negative pressure device for generating negative pressure is arranged in the suction device body, a negative pressure device fixing cavity is arranged in the suction device body, the negative pressure device is arranged in the negative pressure device fixing cavity, the negative pressure device comprises an elastic air bag, one end of the air bag is provided with an air suction pipe communicated with the interior of the air bag, the air suction pipe penetrates through the negative pressure device fixing cavity and extends out of the negative pressure device fixing cavity, the air suction pipe is provided with a first one-way valve only allowing air to flow into the air bag, a second one-way valve only allowing air in the air bag to flow outwards is arranged on the air bag far away from the air suction pipe, and a pump body driving mechanism for compressing and releasing the air bag is arranged on the suction device body, the suction device body in still be equipped with negative pressure device control connection's main control system, be equipped with on the suction device body a plurality of with main control system control connection's controller and display panel, negative pressure bottle fixed part, the weight monitoring sensor with main control system data communication connects.

Preferably, the pump body driving mechanism comprises a speed reducer and a driving motor capable of driving the speed reducer to rotate, a rotating shaft of the speed reducer extends into the negative pressure device fixing cavity, a rocker arm is fixedly arranged at the extending part of the rotating shaft, the tail end of the rocker arm is rotatably connected with a connecting rod, and the other end of the connecting rod is hinged with the air bag through a hinge piece.

Preferably, the air bag comprises a bellows type air bag body and an air bag limiting cylinder sleeved outside the air bag body, a limiting cylinder lower fixing disc is arranged at the bottom of the air bag limiting cylinder, the limiting cylinder lower fixing disc is fixedly connected with the bottom of the fixing cavity of the negative pressure device, and the air bag bottom is fixedly connected with the limiting cylinder lower fixing disc.

Preferably, the air bag body is provided with an air bag limiting sliding sleeve at one end far away from the lower fixed disk of the limiting cylinder, and the air bag limiting sliding sleeve is connected with the inner wall of the air bag limiting cylinder in a sliding manner.

Preferably, the two ends of the air bag body are respectively provided with a first connecting part which can be detachably connected with the lower fixed disc of the limiting cylinder and a second connecting part which can be detachably connected with the limiting sliding sleeve of the air bag, and the air suction pipe is arranged on the first connecting part.

Preferably, a plurality of air outlets communicated with the outside are formed in two sides of the negative pressure device fixing cavity, and a filtering device used for filtering air is detachably arranged on each air outlet.

Preferably, the suction device body is detachably provided with a negative pressure device fixing cavity door plate which is close to the negative pressure device fixing cavity and can be matched with the negative pressure device fixing cavity.

Preferably, a rechargeable battery electrically connected with the negative pressure device and the control host is further arranged in the suction device body, a plurality of rollers are arranged at the bottom of the suction device body, and a push-pull handle is arranged on one side of the suction device body.

Preferably, a plurality of ultraviolet germicidal lamps are arranged in the negative pressure device fixing cavity.

Preferably, a relief valve is provided in the air bag to communicate with the interior thereof.

Preferably, the air bag or the lower fixed disk of the limiting cylinder is provided with a pump body connecting piece for fixedly arranging the negative pressure bottle at the lower end of the air bag.

Preferably, the pump body connecting piece comprises an annular connecting bulge and a fixing nut arranged on the outer ring of the annular connecting bulge, the upper end of the fixing nut is rotatably connected with the annular connecting bulge, and the inner wall of the fixing nut is provided with an internal thread

Preferably, the air-suction device further comprises a negative pressure bottle, wherein a suction connecting port matched with the air bag is arranged on the negative pressure bottle, an inner ring of the suction connecting port is provided with an annular connecting groove matched with the annular connecting bulge, a sealing ring is arranged in the annular connecting groove, and an external thread is arranged on the outer wall of the suction connecting port.

Preferably, the number of the air bags is at least two, the air bags operate and suck air alternately, and the negative pressure bottle is provided with air suction connecting ports with the same number as the air bags.

Preferably, the bottom of the negative pressure bottle fixing part is provided with a lifting device for driving the negative pressure bottle to lift.

Preferably, the lifting device comprises a lifting plate and a scissor type lifting support capable of driving the lifting plate to lift up and down, a lifting support fixing cavity is arranged at the bottom of the negative pressure bottle fixing part, the scissor type lifting support is arranged in the lifting support fixing cavity, the lifting plate is arranged at the upper end of the scissor type lifting support, and the scissor type lifting support is provided with a hand-operated screw rod or a driving motor capable of driving the scissor type lifting support to lift.

The suction device has the beneficial effects that: the utility model changes the traditional negative pressure equipment, generates negative pressure not by the traditional negative pressure pump, but by arranging the air bag, generates suction by compressing and restoring the air bag to suck a wound, has simple structure, large suction, convenient adjustment, low cost of the air bag and convenient replacement, can directly replace the air bag in case that drainage liquid permeates the air bag to cause air bag pollution in the using process of the suction device, has low replacement cost, can directly replace the air bag in occasions with higher requirements on sterility even can directly replace the air bag, improves the safety, can monitor the weight of the drainage liquid in the bottle in real time by arranging the weight monitoring sensor, and avoids the damage of the equipment caused by excessive drainage liquid.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic front view of an embodiment of a suction device according to the present invention.

Fig. 2 is a schematic front sectional view of an embodiment of a suction device according to the present invention.

Fig. 3 is a schematic rear sectional view of an embodiment of a suction device according to the present invention.

FIG. 4 is a schematic view showing the structure of a bladder of a suction device according to the present invention.

FIG. 5 is a schematic view of the airbag body structure of a suction device of the present invention.

FIG. 6 is a schematic cross-sectional view of a suction device according to an embodiment of the present invention.

FIG. 7 is a schematic front view of a suction device according to an embodiment of the present invention.

Fig. 8 is a schematic front view of a negative pressure bottle of the suction device of the present invention.

Fig. 9 is a schematic top view of a negative pressure bottle of the suction apparatus of the present invention.

In the figure: 1-suction device body, 2-negative pressure device, 3-lifting device, 4-roller, 5-push-pull handle, 6-negative pressure bottle, 11-negative pressure bottle fixing part, 12-negative pressure device fixing cavity, 14-control host, 15-controller, 16-display panel, 17-rechargeable storage battery, 18-weight monitoring sensor, 111-lifting support fixing cavity, 121-exhaust port, 122-filter device, 123-negative pressure device fixing cavity door plate, 21-air bag, 22-first one-way valve, 23-second one-way valve, 24-pump body driving mechanism, 25-pump body connecting piece, 26-air suction pipe, 211-air bag body, 212-air bag limiting cylinder, 213-limiting cylinder lower fixing plate, 214-air bag limiting sliding sleeve, 2111-a first connecting part, 2112-a second connecting part, 241-a speed reducer, 242-a driving motor, 243-a rocker arm, 244-a connecting rod, 251-an annular connecting bulge, 252-a fixing nut, 31-a lifting plate, 32-a scissor type lifting support, 61-an air suction connecting port, 62-an annular connecting groove and 63-a sealing ring.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the utility model and not to limit the scope of the utility model. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the products of the present invention are conventionally placed when used, and are merely used for convenience of describing and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. . Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1, 2 and 3, the suction device of the present invention includes a suction device body 1. The suction device body 1 is provided with a negative pressure bottle fixing part 11. A negative pressure device 2 for generating negative pressure is arranged in the suction device body 1. The suction device body 1 is internally provided with a negative pressure device fixing cavity 12. The negative pressure device 2 is arranged in the pressure device fixing cavity 12. The negative pressure device 2 includes an air bag 21 having elasticity. An air suction pipe 26 communicated with the interior of the air bag 21 is provided at one end of the air bag. The air suction pipe 26 extends through the vacuum fixing chamber 12 to the outside of the vacuum fixing chamber 12. The air suction pipe 26 is provided with a first check valve 22 for allowing air to flow only into the air bladder 21. A second one-way valve 23 is arranged on the air bag 21 far away from the air suction pipe 26 and only allows the air in the air bag 21 to flow outwards. The suction device body 1 is provided with a pump body driving mechanism 24 for compressing and releasing the air bag 21. The suction device body 1 is also internally provided with a control host 14 which is connected with the negative pressure device 2 in a control way. The suction device body 1 is provided with a plurality of controllers 15 and display panels 16 which are connected with the control host 14 in a control way. The weight monitor sensor 18 for monitoring the weight of the bottle body disposed on the upper side thereof is provided at the bottom of the negative pressure bottle fixing portion 11. The weight monitoring sensor 18 is in data communication with the control host 14. This embodiment changes traditional negative pressure equipment, do not produce the negative pressure through traditional negative pressure pump, but through setting up gasbag 21, through compression and recovery gasbag 21 production suction attract the wound, gasbag 21 simple structure, suction is big, it is convenient to adjust, and gasbag 21 is with low costs, convenient change, in case there is drainage liquid infiltration gasbag 21 to cause gasbag 21 to pollute in the suction device use, directly change gasbag 21 can, the replacement cost is low, some can directly change gasbag 21 one by one even to the higher occasion of aseptic requirement, the improvement security, can the in-bottle drainage liquid weight of real-time supervision through setting up weight monitoring sensor 18, avoid the too much equipment damage that causes of drainage liquid.

Referring to fig. 1, 2, 3, 4 and 5, the pump body driving mechanism 24 includes a speed reducer 241 and a driving motor 242 capable of driving the speed reducer 241 to rotate. The rotating shaft of the speed reducer 241 extends into the negative pressure device fixing chamber 12, and a swing arm 243 is fixed to the extended portion. A link 244 is rotatably connected to the end of the swing arm 243. The other end of the link 244 is hingedly connected to the airbag 21 by a hinge 245. The rocker arm 243 is driven to rotate by the driving motor 242, so that the connecting rod 244 is driven to drive the air bag 21 to compress and release, suction force is generated, and the air bag 21 is more convenient to mount and dismount and replace.

Referring to fig. 4 and 5, the airbag 21 includes a bellows-type airbag body 211 and an airbag positioning tube 212 sleeved outside the airbag body 211. The bottom of the air bag limiting cylinder 212 is provided with a lower limiting cylinder fixing disc 213. The lower fixed disc 213 of the limiting cylinder is fixedly connected with the bottom in the fixing cavity 12 of the negative pressure device. The bottom of the air bag 21 is fixedly connected with a lower fixed disc 213 of the limiting cylinder. The air bag body 211 is a driven bellows type compression air bag, the service life is long, the cost is low, the air bag body 211 moving position is limited by the cooperation of the air bag limiting barrel 212 and the air bag body 211, the deviation of the air bag body 211 is avoided, the power of the pump body driving mechanism 24 is effectively utilized, the suction force is more uniform, and the air bag 21 is conveniently fixed by the lower fixing disk 213 of the limiting barrel. When replacing, the whole set of the air bag 21 can be replaced selectively, and the air bag body 211 can also be replaced independently.

Referring to fig. 4 and 5, an air bag limiting sliding sleeve 214 is disposed on an end of the air bag body 211 away from the lower fixing disc 213 of the limiting cylinder. The air bag limiting sliding sleeve 214 is connected with the inner wall of the air bag limiting cylinder 212 in a sliding way. Set up the spacing sliding sleeve 214 of gasbag and further inject gasbag body 211 active position, thereby avoid gasbag body 211 activity in-process friction gasbag spacing section of thick bamboo 212 inner wall to influence gasbag body 211 life.

Referring to fig. 4 and 5, the two ends of the airbag body 211 are respectively provided with a first connection portion 2111 detachably connected to the lower fixed disk 213 of the limiting cylinder and a second connection portion 2112 detachably connected to the limiting sliding sleeve 214 of the airbag. The suction pipe 26 is provided at the first connection portion 2111. The gasbag body 211 is separated from the other parts, and the first connecting part 2111 and the second connecting part 2112 are arranged to fix the gasbag body 211, so that the gasbag body 211 can be mounted and dismounted more conveniently, and the gasbag body 211 can be replaced conveniently.

Referring to fig. 2, a plurality of exhaust ports 121 communicated with the outside are disposed at both sides of the negative pressure device fixing chamber 12. A filter 122 for filtering air is detachably provided on the air outlet 121. The rest part of the negative pressure device fixing cavity 12 is sealed and provided with the exhaust port 121 only used for exhausting, and the filtering device 122 can filter the peculiar smell in the exhausted air, reduce the peculiar smell and improve the quality of the ambient air.

Referring to fig. 1, a negative pressure device fixing cavity door plate 123 capable of being matched with the negative pressure device fixing cavity 12 is detachably arranged on the suction device body 1 near the negative pressure device fixing cavity 12. The negative pressure device 2 is convenient to replace and maintain.

Referring to fig. 1 and 3, a rechargeable battery 17 electrically connected to the negative pressure device 2 and the control host 14 is further disposed in the suction device body 1. The bottom of the suction device body 1 is provided with a plurality of rollers 4. One side of the suction device body 1 is provided with a push-pull handle 5. The use is more convenient, is convenient for remove.

Referring to fig. 2, a plurality of ultraviolet germicidal lamps 18 are disposed in the negative pressure device fixing cavity 12. The gas discharged from the air bag can be sterilized, so that the transmission of germs is avoided, and the safety is improved.

Referring to fig. 4, the air bag 21 is provided with a relief valve 27 communicating with the interior thereof. A certain suction force is removed, the air bag 21 is prevented from being damaged, and the human body is prevented from being injured by overlarge suction force.

Example two:

referring to fig. 6, the lower fixing plate 213 of the limiting cylinder is provided with a pump body connector 25 for fixing the negative pressure bottle at the lower end of the air bag 21. The pump body connecting piece 25 can directly fix the negative pressure bottle at the lower side of the air bag 21 without connecting the negative pressure bottle through an additional pipeline, and the negative pressure bottle is more stable to fix and is not easy to topple

Referring to fig. 6, the pump body connector 25 includes an annular coupling projection 251 and a fixing nut 252 provided on an outer circumference of the annular coupling projection 251. The upper end of the fixing nut 252 is rotatably coupled to the annular coupling protrusion 251. And the inner wall of the fixing nut 252 is provided with internal threads. The annular connecting bulge 251 is used for being in interference fit with the interface position of the negative pressure bottle to improve the sealing performance, and the fixing nut 252 is used for being in fit with and fixedly connected with an external nut on the bottle opening of the negative pressure bottle.

Referring to fig. 7, 8 and 9, a negative pressure bottle 6 is further included. The negative pressure bottle 6 is provided with a suction connection port 61 that can be engaged with the air bag 21. The inner ring of the air suction connection port 61 is provided with an annular connection groove 62 which can be matched with the annular connection projection 251. A sealing ring 63 is arranged in the annular connecting groove 62. The outer wall of the air exhaust connecting port 61 is provided with external threads. The suction connecting port 61, the annular connecting groove 62 and the sealing ring 63 are arranged on the negative pressure bottle and matched with the pump body connecting piece 25, so that the connection is tighter, and the sealing performance is better.

Referring to fig. 6, 7, 8 and 9, there are two air bags 21, and the air suction is alternately performed between the two air bags 21. The negative pressure bottle 6 is provided with suction connection ports 61 in the same number as the number of the air bags 21. The two air bags 21 can be matched with each other to fill the air exchange time of the air bags 21, so that uninterrupted air suction is performed, and the air suction process is smoother.

Referring to fig. 6, the bottom of the negative pressure bottle fixing portion 11 is provided with a lifting device 3 for driving the negative pressure bottle to lift. The lifting device 3 is lifted to support the bottom of the negative pressure bottle, so that a certain pressure bearing effect is achieved, and the negative pressure device 2 is prevented from being damaged due to overweight of the negative pressure bottle.

Referring to fig. 6, the lifting device 3 includes a lifting plate 31 and a scissor type lifting bracket 32 capable of driving the lifting plate 31 to lift up and down. The bottom of the negative pressure bottle fixing part 11 is provided with a lifting bracket fixing cavity 111. The scissor lift truck 32 is disposed within the lift truck mounting cavity 111. The lifting plate 31 is arranged at the upper end of the scissor type lifting bracket 32. The lifting plate 31 is driven to lift through the adjustment of the scissor type lifting support 32, the lifting plate 31 is lifted to support the bottom of the negative pressure bottle, a certain pressure bearing effect is achieved, the negative pressure device 2 is prevented from being damaged due to the fact that the negative pressure bottle is too heavy, the scissor type lifting support 32 is convenient to adjust, the lifting process is stable, and the looseness is not prone to occurring. The scissor type lifting support 32 is provided with a driving motor which can drive the scissor type lifting support 32 to lift. Through motor drive, it is more convenient to go up and down.

The working process of the utility model is as follows:

in the working process of the suction device, the negative pressure bottle 6 is connected with the negative pressure bottle 6, the driving motor 242 drives the rocker arm 243 to rotate, so that the connecting rod 244 is driven to pull the air bag 21 to compress and recover, when the air bag 21 is compressed, the first one-way valve 22 is closed, the second one-way valve 23 is opened, air in the air bag 21 is discharged through the second one-way valve 23, and in the recovery process of the air bag 21, the first one-way valve 22 is opened, the second one-way valve 23 is closed, air in the negative pressure bottle 6 is sucked through the air suction pipe 26, and negative pressure is generated in the negative pressure bottle 6.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims (10)

1. The utility model provides a suction device, includes suction device body (1), be equipped with negative pressure bottle fixed part (11) on suction device body (1), be equipped with negative pressure device (2) that are used for producing the negative pressure in suction device body (1), its characterized in that: a negative pressure device fixing cavity (12) is arranged in the suction device body (1), the negative pressure device (2) is arranged in the negative pressure device fixing cavity (12), the negative pressure device (2) comprises an elastic air bag (21), an air suction pipe (26) communicated with the interior of the air bag (21) is arranged at one end of the air bag (21), the air suction pipe (26) penetrates through the negative pressure device fixing cavity (12) and extends to the outside of the negative pressure device fixing cavity (12), a first one-way valve (22) only allowing air to flow into the air bag (21) is arranged on the air suction pipe (26), a second one-way valve (23) only allowing air in the air bag (21) to flow outwards is arranged at a position, far away from the air suction pipe (26), on the suction device body (1), a pump body driving mechanism (24) used for compressing and releasing the air bag (21) is arranged, the suction device body (1) in still be equipped with negative pressure device (2) control connection's main control system (14), be equipped with on suction device body (1) a plurality of with main control system (14) control connection's controller (15) and display panel (16), negative pressure bottle fixed part (11) bottom is equipped with weight monitoring sensor (18) that are used for monitoring to set up the bottle weight of its upside, weight monitoring sensor (18) with main control system (14) data communication is connected.

2. A suction device as claimed in claim 1, wherein: the pump body driving mechanism (24) comprises a speed reducer (241) and a driving motor (242) capable of driving the speed reducer (241) to rotate, a rotating shaft of the speed reducer (241) extends into the negative pressure device fixing cavity (12), a rocker arm (243) is fixedly arranged at the extending part of the rotating shaft, the tail end of the rocker arm (243) is rotatably connected with a connecting rod (244), and the other end of the connecting rod (244) is hinged with the air bag (21) through a hinge piece (245).

3. A suction device as claimed in claim 1, wherein: gasbag (21) locate including bellows formula gasbag body (211) and cover gasbag spacing section of thick bamboo (212) outside gasbag body (211), gasbag spacing section of thick bamboo (212) bottom is equipped with fixed disk (213) under the spacing section of thick bamboo, fixed disk (213) under the spacing section of thick bamboo with bottom fixed connection in negative pressure device fixed cavity (12), gasbag (21) bottom with fixed disk (213) fixed connection under the spacing section of thick bamboo.

4. A suction device as claimed in claim 3, wherein: the airbag is characterized in that an airbag limiting sliding sleeve (214) is arranged at one end, away from the limiting cylinder lower fixing disc (213), of the airbag body (211), and the airbag limiting sliding sleeve (214) is connected with the inner wall of the airbag limiting cylinder (212) in a sliding mode.

5. A suction device as claimed in claim 4, characterized in that: the air bag comprises an air bag body (211), wherein a first connecting part (2111) and a second connecting part (2112) are arranged at two ends of the air bag body (211), the first connecting part (2111) can be detachably connected with a lower fixed disc (213) of a limiting cylinder, the second connecting part (2112) can be detachably connected with an air bag limiting sliding sleeve (214), and an air suction pipe (26) is arranged on the first connecting part (2111).

6. A suction device as claimed in claim 1, wherein: the negative pressure device fixing cavity (12) is provided with a plurality of exhaust ports (121) communicated with the outside on two sides, and the exhaust ports (121) are detachably provided with filtering devices (122) used for filtering air.

7. A suction device as claimed in claim 1, wherein: the suction device body (1) is provided with a negative pressure device fixing cavity door plate (123) which is close to the negative pressure device fixing cavity (12) and can be matched with the negative pressure device fixing cavity (12) in a detachable mode.

8. A suction device as claimed in claim 1, wherein: the suction device is characterized in that a rechargeable storage battery (17) electrically connected with the negative pressure device (2) and the control host (14) is further arranged in the suction device body (1), a plurality of rollers (4) are arranged at the bottom of the suction device body (1), and a push-pull handle (5) is arranged on one side of the suction device body (1).

9. A suction device as claimed in claim 1, wherein: a plurality of ultraviolet germicidal lamps (18) are arranged in the negative pressure device fixing cavity (12).

10. A suction device as claimed in claim 1, wherein: and a pressure release valve (27) communicated with the interior of the air bag (21) is arranged on the air bag.

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