CN2734633Y - Hand-held vacuum air pump - Google Patents

Abstract

The utility model relates to an encapsulation equipment, in particular to a hand-held vacuum air pump, attaching a valve port, and comprising a handle, a vacuum nozzle, a vacuum air pump and a sensing switch. The vacuum nozzle, which extends to the handle and is connected with the valve port of the container, has a vacuum degree corresponding to the internal pressure of the container, and the vacuum air pump supported by the handle generates the vacuum effect in the vacuum nozzle. The sensing switch comprises a movable sensing component driven by the vacuum pressing of the vacuum nozzle and a control component which spatially separates from the movable sensing component and makes the vacuum pump running, and the vacuum pump can be stopped by the line connection of the movable sensing component and the control component, when the vacuum pressure is below to the setting value. The sensing switch of the vacuum pump is arranged in the handle, so the running effect of the vacuum air pump is optimization, and the sucking is stopped automatically when the sucking of the container is already enough. So the utility model has the advantages of compact conformation and convenient use.

Description

The hand-held vacuum air pump

Technical field

The utility model relates to a kind of sealed in unit, more specifically is a kind of hand-held vacuum air pump.

Background technology

Traditional sealed in unit as vacuum air pump, is widely used, Vacuum Package food storage bag for example, after air was drained, it is minimum that microbial numbers is reduced to, therefore the food in the sack is subjected to the degree of microorganism encroach also to drop to minimum, and the time that food is preserved is longer.Traditional vacuum air pump is furnished with an operator's compartment (vacuum chamber), and the plastic bag that food is housed to be packaged is placed in the vacuum chamber, extracts the air in the plastic bag out, with the valve port of heat sealing machine sealed plastic bag.This air pump uses so be not suitable for family because vacuum chamber is bigger.

In order to address the above problem, through effort in a few years, the handle vacuum air pump has emerged, and the vacuum chamber of its outfit links to each other with vacuum noz(zle), and vacuum noz(zle) just in time inserts in the plastic bag, drains the air of the inside.Generally speaking, the practical application of handle vacuum air pump get up not too convenient.At first, the handle vacuum air pump needs filter to filter in the plastic bag N/R particle or water droplet in order to avoid enter vacuum pump.So use very inconvenient because frequently change filter in the use possibly.

In addition, generally, traditional handle vacuum air pump has a vacuum transducer in vacuum chamber, links to each other with vacuum pump to detect air pressure in the plastic bag, and therefore when all air in the plastic bag all were evacuated, vacuum pump can stop extracting air automatically.But sensor is difficult to meet requirements usually, therefore how regularly, when vacuum pump quits work with plastic bag in the best of air extract and be difficult to reach synchronous.So when plastic bag not during perfect vacuum, vacuum pump may stop extracting air.On the contrary, when all air in the plastic bag all are drawn out of,, cause vacuum pump to work on, may cause the infringement of product in the plastic bag if vacuum transducer is sensitive inadequately.

The Kriston vacuum air pump (patent No. 5765608) that a traditional vacuum air pump example is the U.S., it is made up of a Room, a pipe, a motor and a monofilm vacuum transducer, on this machine, there is a conduit to be used for transfering fluid, allow fluid to pass through vacuum transducer simultaneously, thereby during the pressure that can in reaching container, set, optimally close motor.Its problem that mainly exists is to play the part of the center role during the fluid of fluid flow pipe in vacuum pump shifts.This means the position of associated components such as motor, drinking-water pipe and vacuum transducer, on path and fluid flow geom (shape is elongated), be independently, specifically, associated components must distribute along the fluid flow pipeline, and this makes the size that reduces shell become very difficult.

In addition,, see that imagination fluid flow pipeline air pressure everywhere is identical, is irrational in the viewpoint of practicality because the shape of fluid flow pipeline is elongated.So the position of the vacuum transducer on the fluid flow pipeline when determining that a Best Times stops vacuum suction, becomes extremely important at the air pressure of accurate measuring vessel.This puts into practice and goes up unlikely, and on the fluid flow pipeline, seek the optimum position so vacuum transducer is installed, to reach the best effort performance of vacuum pump, also be very difficult.

Summary of the invention

The purpose of this utility model provides a kind of high efficiency, volume hand-held vacuum air pump little, easy to use, and it can accurately detect the air pressure of the container of the draw fluid of wanting, that is when the air in the container is sucked, stops suction automatically.

For reaching above-mentioned target, the utility model adopts following technical scheme: the hand-held vacuum air pump, subsidiary valve port, it comprises handle, vacuum noz(zle) and the vacuum pump with vacuum head, described vacuum pump is arranged in the handle and is connected with a sensing switch, this sensing switch is made up of two function uniies that make vacuum pump be able to work, and one is that the vacuum pressure in the vacuum noz(zle) drives removable sensing element, and it two often be isolation move operation parts.

Sensing switch described in the utility model comprises a sensing chamber, and the sensing chamber is provided with a sealing chamber, and it connects a pressure inlet that links to each other with sealing chamber, and described removable sensing element is free to slide under this sealing chamber sealing means.

Sensing switch described in the utility model also comprises an elastic element.

Sensing switch described in the utility model comprises a sensing regulating control, and it comprises a fixedly cushion that is fixed in the sensing chamber rotatably, and described elastic element terminal is fixed on this fixedly on the cushion.

Sensing switch described in the utility model comprises a sealing coaxial rings that is attached to the sensing chamber interior walls, and it seals removable sensing element slidably.

Vacuum noz(zle) described in the utility model comprises a nozzle, and nozzle has the vacuum chamber of increasing and is arranged in the fluid intake of handle vacuum head, and gas absorption spray wherein has the sensor outlet and the outlet of bleeding; Described vacuum noz(zle) comprises a sensing pipe flexibly, and sealing ground extends to the sensing chamber from the sensor outlet, thereby vacuum chamber and sealing chamber are coupled together; It also comprises a drinking-water pipe flexibly, and sealing ground extends to vacuum pump from the outlet of bleeding, thereby vacuum chamber and vacuum pump are linked up.

The utility model also comprises an electric supply installation, and electric supply installation includes a rechargeable battery of being supported by handle, and it is connected with control panel with vacuum pump in handle.

Valve port described in the utility model is made up of following each several part: a vacuum noz(zle), and it comprises a nozzle, and nozzle has the vacuum chamber of increasing and is arranged in the fluid intake of handle vacuum head; A vacuum pump of supporting by handle, one and vacuum pump bonded assembly sensing switch.

Vacuum noz(zle) described in the utility model is provided with the sensor outlet and the outlet of bleeding.

Vacuum noz(zle) described in the utility model comprises a sensing pipe, and sealing ground extends to the sensing chamber from the sensor outlet; It also comprises a drinking-water pipe, and sealing ground extends to vacuum pump from the outlet of bleeding; Also comprise an electric supply installation, electric supply installation includes a rechargeable battery of being supported by handle, is connected with control panel with the vacuum pump of moulding on handle.

The vacuum pump that the utility model is provided with in handle is connected with a sensing switch, thereby can make the operation optimization of vacuum air pump, that is to say, when container is sucked, stop draw fluid automatically, and the relative position of its inner member is independently on the fluid flow pipeline, thereby these elements can form a compact design at handle, it does not comprise expensive and baroque electronics or mechanical element, thereby manufacturing cost is lower, and easy to use.

Description of drawings

Fig. 1 is a three-dimensional decomposition texture scheme drawing of the present utility model.

Fig. 2 is the sectional structure chart of gas absorption spray part of the present utility model.

Fig. 3 is the sectional structure chart of sensing switch part of the present utility model.

Fig. 4 A, Fig. 4 B, 4C are vacuum pump operation logic figure of the present utility model.

Fig. 5 is a diagram of work of the present utility model.

Fig. 6 is the constructional drawing of another embodiment of the present utility model.

Fig. 7 is the diagram of work of another embodiment of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

As Fig. 1 and shown in Figure 5, be used for drawing the hand-held vacuum air pump of container 90 inner fluids through valve port 91, include a handle 10, vacuum noz(zle) 20 and a vacuum pump 30, on vacuum noz(zle) 20, be provided with the sensing switch of sensing degree of vacuum simultaneously.For convenience and permanent the use, handle 10 generally is made with lightweight durable material such as plastics, and it has a vacuum head 11, gets in touch the valve port 91 of container 90, thus can allow container 90 fluid particularly air drawn by valve port 91 and vacuum head 11; Vacuum noz(zle) 20 corresponding to the inner chamber of container 90, has degree of vacuum in it.It extends to vacuum head 11, and then the valve port of contact container 90.

Vacuum pump 30 is installed in the handle 10, in vacuum noz(zle) 20, the vacuum head of handle 10 produces vacuum effect for 11 li, to draw the fluid of container 90.

Sensor comprises a sensing switch 40, it is connected with vacuum pump 30 circuit, and the degree of vacuum of 20 li of sensing vacuum noz(zle)s is driven removable sensing element 41 and is often isolated move operation parts 41 and the function unit 42 that makes vacuum pump be able to work forms by the degree of vacuum in the vacuum noz(zle) 20.When degree of vacuum drops under the setting value, removable sensing element 41 will be driven, and it and function unit 42 form the path of vacuum pumps 30, thereby make vacuum pump 30 stop to vacuumize.Will stop to draw the fluid in the container 90 when in other words, this situation takes place vacuum pump.

As shown in Figure 2, vacuum noz(zle) 20 comprises a nozzle 21, and nozzle has the vacuum chamber 211 of increasing and is arranged in the fluid intake 212 of handle 10 vacuum heads 11, thus with vacuum chamber 211 and and the interior pressure of container 90 connect.The degree of vacuum that vacuum pump wherein 30 is pressed in thereby vacuum chamber 211 generation vacuum effects produce with respect to container 90, thereby to vacuum chamber 211,, fluid intake 212 can guarantee that container 90 suitably and accurately produces vacuum thereby connecting container 90 hermetically from container 90 draw fluid.

As shown in Figure 3, sensing switch 40 wherein comprises a sensing chamber 43, and there is pressure inlet 431 the sensing chamber and respond to barometric pressure as the reference pressure.Also has a sealing chamber 432, sensing degree of vacuum is also got in touch pressure inlet 431, removable sensing element 41 wherein can be free to slide under these sealing chamber 432 sealing air modes, thereby reduce to setting value when following when degree of vacuum, promptly mean when fluid in the container 90 has been sucked the operation of control vacuum pump 30.

In addition, sensing switch 40 comprises a sealing coaxial rings 45 that is attached to sensing chamber 43 inwalls, and this ring enters the mouth 431 thereby isolate sealing chamber 432 with pressure with the sliding type motion.In other words, when removable sensing element 41 slided in sealing chamber 432, closed-loop 45 prevented that sealing chamber 432 links to each other with barometric pressure by pressure inlet 431.When degree of vacuum less than when pressing, removable sensing element 41 will slide to function unit 42 and link to each other and stop the operation of vacuum pump 30 until both.Arranging the sensor outlet 213 and the outlet 214 of bleeding on the nozzle 21 of vacuum noz(zle) 20, they reach vacuum chamber 432 and vacuum pump 30 and connect respectively with vacuum chamber 432 and sensing switch 40.

Specifically, the fluid in the container is drawn by vacuum chamber 21, can improve the degree of vacuum that equals container air pressure in the vacuum chamber substantially like this.Vacuum noz(zle) 20 also comprises a sensing pipe 22, and its sealing ground connects sensor outlet 213 and sensing switch 40; Also comprise a pump line 23, its sealing ground connects bleed outlet 214 and vacuum pump 30.Fluid flowing in vacuum chamber 21 will be connected by sensing pipe 22 and pump line 23 respectively by sensing switch 40 and vacuum pump 30 like this.Sensing pipe 22 and pump line 23 are made by lightweight, soft durable material, therefore the relative position of vacuum pump and sensing switch can be adjusted to the best neatly, so just can reach a compact design, and no longer rely on the flow process pipeline of an elongation, remove to get in touch each element of vacuum pump.

Removable sensing element 41 is designed to be positioned at the border of pressure inlet 431 and sealing chamber 432, and the outer wall sensing of movable operation parts 41 wherein is with reference to pressure, and inwall sensing degree of vacuum.So the pressure difference of inside and outside two walls will spur removable sensing element 41 and move along the direction of low pressure, in other words, along direction to vacuum chamber.In addition, sealing chamber 432 is by the vacuum chamber of the nozzle 21 of sensing pipe 22 contact vacuum noz(zle)s 20.Like this, vacuum chamber 211 and sealing chamber 432 sense same pressure, just the air pressure in the container 90.

For the better operation of control vacuum pump 30, sensing switch 40 also comprises an elastic element 46, being closed the chamber supports for 432 li safely, utilize pressure to promote removable sensing element 41 to some positions, promptly when degree of vacuum equaled with reference to pressure, removable sensing element 41 was fixed on that position of pressure inlet 431.Like this, because with reference to the existence of pressing, removable sensing element 41 often is to separate on the space with function unit 42.

In addition, sensing switch 40 comprises a sensing regulating control 44, and it comprises a fixedly cushion 441 that is fixed in sensing chamber 43 rotatably.Elastic element 46 terminals wherein are stably to be fixed on this fixedly on the cushion 441.Like this, sensing regulating control 44 will rotate according to sensing chamber 43 and move, and optionally adjusting the pressure that this resilient member 46 acts on removable sensing element 41, thereby adjust the susceptibility of 41 pairs of degree of vacuum of removable sensing element of sensing switch 40.Elastic element 46 is designed to spring with resilience, is closed chamber 432 and supports, it is applied to apply antagonism with reference to the pressure of pressing to removable sensing element 41 inwalls.In addition,, can adjust the susceptibility that the vacuum in 40 pairs of containers of sensing switch 90 is pressed, also can control the susceptibility of vacuum pump 30 by selecting a suitable susceptibility by sensing regulating control 44.Like this, one bigger may drive removable sensing element 41 and surmounts sensing regulating control 44 and link to each other with function unit 42 with reference to pressing.

So sensing regulating control 44 can make this hand-held vacuum air pump use effectively under different environment, such as the barometric pressure place more high/low, because the cause of this area's height above sea level with respect to normal atmosphere (An).

As shown in Figure 1-Figure 3, vacuum pump 30 comprises a motor integrated package 31 and vacuum pump body 32 that is distributed in handle 10.Motor integrated package 31 is the contact pump housing 32 when operation, and the pump housing 32 is got in touch vacuum chamber 211 for the air that sucks container 90 by vacuum noz(zle) 20.

Motor integrated package 31 comprises a motor 311 and an axle drive shaft 312, and it extends away from middle heart in order to drive the pump housing 32, so just can draw the fluid in the container 90.Vacuum pump also comprises a pump chamber 322 and a piston 321, and piston has a drive end 3211, the axle drive shaft 312 of its contact motor integrated package 31; Also have one and send pressure head 3212, it arrives at pump chamber 322 in reciprocal mode.Motor 311 drives axle drive shafts 312 centrifugal rotations, and then driven plunger 321 moves around pump chamber 322 reciprocally, produces the pressure difference of pump chamber 322 and container 90 like this for draw fluid.

Shown in Fig. 3 and Fig. 4 A-Fig. 4 C, the pump housing 32 also comprises a cylinder unit 323, and it determines first and second deflation hole 3231,3232 to get in touch pump chambers 322 by first and second fluid control cylinder 3233,3234 respectively with master mode.The exterior of second series pore 3232 and this machine, fluid will be pumped out outside this machine like this, to continue to produce the pressure difference of pump chamber 322 and container 90.In order to control inflow and the outflow of fluid in first and second deflation hole 3231,3232, first and second fluid control cylinder 3233,3234 will be adjusted, and only allow one-way fluid to pass through respectively.First deflation hole 3231 is linked to each other with vacuum chamber 211 by pump line 23 by the inlet 214 that draws water, and first fluid control cylinder 3233 is adjusted to allow unidirectional fluid to flow to pump chamber 322 from first deflation hole 3231.Accordingly, second fluid control cylinder 3234 is adjusted to allow unidirectional fluid to flow to from pump chamber 322 and leads to handle 10 exterior second series pores 3232.

Assisting down of motor 31, the pump housing 32 mode of operation are as follows: shown in Fig. 4 A, it illustrates motor 31 and the position of the pump housing 32 before work.On this position, there is not the fluid of suction in pump chamber 322, and the fluid that has sucked pump chamber 322 can only arrive second series pore 3232 by second fluid control cylinder 3234.

Shown in Fig. 4 B, it illustrates the pump housing 32 and discharges fluid from pump chamber 322.In this stage, driven plunger 321 is impelled pump chamber 322 interior fluids outflow pump chambers 322 to flow through second fluid control cylinder 3234 and is arrived at second series pore 3232, thereby discharge outside the handle 10 to cylinder unit 323 motions.

Shown in Fig. 4 C, it illustrates the process of vacuum pump draw fluid from container 90.In this stage, piston 321 moves away from cylinder unit 323, thereby fluid is driven to first deflation hole 3231 from vacuum chamber 211.In this case, fluid is allowed to by first fluid control cylinder 3233 to arrive at pump chamber 322.Fully behind the return, this circulation will be proceeded to Fig. 4 C from Fig. 4 A at piston.

When noticing that machine does not move, when separating with the valve port 91 of container 90 with vacuum noz(zle) 20, degree of vacuum reverts to barometric pressure, can adjust elastic element 46 simultaneously, applies normal pressure to removable sensing element, blocks pressure inlet 431 so that it returns.By the rotating speed of control motor 311, effectively suction Controlled speed and air-breathing speed (absorption from container 90).

Correspondingly, as shown in Figure 1, this machine also comprises a control panel, is provided by handle 10, and it is connected with motor integrated package 31 circuit, thus the operation of control motor integrated package 31, such as controlling by switch or capture velocity.

It is worthy of note that this hand-held vacuum air pump can be applied to the open air, also can prolong the time of indoor use, it has comprised electric supply installation 60, this electric supply installation not only connects handle 10, and is connected with the control panel circuit with power integrated package 31, for the operation of vacuum pump 30 provides power.And it also is designed to a rechargeable battery rightly, and the power import that provides by handle 10 charges, and can be applied to portable occupation mode separately.In addition as selecting, it can also need to be connected external ac power source so that power to be provided when utilizing power supply in real time.

In the following description, we will understand the relative position of vacuum pump 30, sensing switch 40 and vacuum noz(zle) 20, they are not to go to influence the vacuum operation of this machine by mono-flow process pipeline, but utilize vacuum chamber 211 and sensing pipe 22 and drinking-water pipe 23 to reach this purpose.The relative position of vacuum pump 30 and sensing switch 40 is arranged to a compact design so that the minimized in size of whole handle 10.Such as image pattern 5 expression like that, handle 10 is designed and is made into elongation type structure and uses with convenient.

Point out that sensing tool can show as any sensing switch, as magnetic switch, when the fluid in the container 90 was drawn, it can make vacuum pump 30 out of service no less important.

When using this hand-held vacuum air pump, the user need connect the valve port 91 of vacuum noz(zle) 20 and container 90, moves control panel then, and when the fluid in container has been drawn, sensing tool will stop vacuum suction in a manner mentioned above.

In brief, hand-held vacuum air pump of the present utility model attaches a valve port, comprise a handle, a vacuum noz(zle), a vacuum pump and a sensing switch, vacuum noz(zle) exists corresponding to the degree of vacuum of pressing in the container, it extends and can be connected with the valve port of container to handle, produces vacuum effect by the vacuum pump of handle support in gas absorption spray; Sensing switch comprises one and is subjected to the vacuum of gas absorption spray to press the removable sensing element that drives spatially to separate the function unit that makes the vacuum pump operation with removable sensing element with one, when the pneumatics of taking seriously is reduced under the setting value,, removable sensing element is connected the operation that stops vacuum pump thereby will carrying out circuit with function unit.

Fig. 6 and the structural representation that Figure 7 shows that another embodiment of the present utility model.It shows, this vacuum air pump that is used for exhaust be equipped with in container 90 ' lining valve port 91 ', also show this machine by handle 10 ', vacuum noz(zle) 20 ', vacuum pump 30 ' and the instrument that is positioned at the sensing vacuum pressure of gas absorption spray form.For convenience and the permanent handle 10 ' make of using with lightweight durable material such as plastics, wherein have a vacuum head 11 ', its contact container 90 ' valve port 91 ', so can allow container 90 ' fluid particularly air by valve port 90 ' and vacuum head 11 ' and drawn.

Except vacuum pump 30 was different with the relative position of sensing switch 40, the diagram of another embodiment of the present utility model illustrated similar to first-selected embodiment.According to inferior choosing diagram, the vacuum head 11 of an increasing of handle 10 ' have ', sensing switch 40 wherein ' and vacuum noz(zle) 20 ' by be arranged in shoulder to shoulder near vacuum head 11 ' handle 10 ' lining.In addition, vacuum pump 30 ', particularly power integrated package 31 ', be arranged at vacuum noz(zle) 20 ' the upper right side.Like this handle 10 ' total weight require to have minimized, thereby make the minimized in size of whole handle.Specifically, as shown in Figure 7, handle 10 ' the handle parts transversely extend to form a warp architecture, from but handle 10 ' most desirably reach proxemics effect.

In addition, vacuum noz(zle) 20 ', corresponding to container 90 ' interior pressure, degree of vacuum is arranged in it.It is to vacuum head 11 ' extension, and contact container 90 ' valve port.A sensor outlet 213 of vacuum noz(zle) 20 ' also have ' and the outlet 214 of bleeding ', they nozzle 21 ' on arrange, respectively by sensing pipe 22 ' and drinking-water pipe 23 ', with sensing switch 40 ' and vacuum pump 30 ' contact vacuum chamber 211 '.And this hand-held vacuum air pump also comprises a control panel, by handle 10 ' provide, and is connected with vacuum pump 30 ' circuit.In addition, this machine also comprise an electric supply installation 60 ', by handle 10 ' support, can for vacuum pump 30 ' operation power supply is provided, a rechargeable battery of this electric supply installation 60 ' be designed to rightly, power import by handle 10 ' provide charges, and can be applied to portable occupation mode separately.In addition as selecting, it can also need to be connected external ac power source so that power to be provided when utilizing power supply in real time.

Claims (10)

1. hand-held vacuum air pump, subsidiary valve port, it comprises handle, vacuum noz(zle) and the vacuum pump with vacuum head, it is characterized in that: described vacuum pump is arranged in the handle and is connected with a sensing switch, this sensing switch is made up of two function uniies that make vacuum pump be able to work, one is that the vacuum pressure in the vacuum noz(zle) drives removable sensing element, and it two often be isolation move operation parts.

2. hand-held vacuum air pump according to claim 1, it is characterized in that: described sensing switch comprises a sensing chamber, and the sensing chamber is provided with a sealing chamber, it connects a pressure inlet that links to each other with sealing chamber, and described removable sensing element is free to slide under this sealing chamber sealing means.

3. hand-held vacuum air pump according to claim 2 is characterized in that: described sensing switch also comprises an elastic element.

4. hand-held vacuum air pump according to claim 2 is characterized in that: described sensing switch comprises a sensing regulating control, and it comprises a fixedly cushion that is fixed in the sensing chamber rotatably, and described elastic element terminal is fixed on this fixedly on the cushion.

5. hand-held vacuum air pump according to claim 2 is characterized in that: described sensing switch comprises a sealing coaxial rings that is attached to the sensing chamber interior walls, and it seals removable sensing element slidably.

6. hand-held vacuum air pump according to claim 1 is characterized in that: described vacuum noz(zle) comprises a nozzle, and nozzle has the vacuum chamber of increasing and is arranged in the fluid intake of handle vacuum head, and gas absorption spray wherein has the sensor outlet and the outlet of bleeding; Described vacuum noz(zle) comprises a sensing pipe flexibly, and sealing ground extends to the sensing chamber from the sensor outlet, thereby vacuum chamber and sealing chamber are coupled together; It also comprises a drinking-water pipe flexibly, and sealing ground extends to vacuum pump from the outlet of bleeding, thereby vacuum chamber and vacuum pump are linked up.

7. according to claim 1,2,3 or 4 described hand-held vacuum air pumps, it is characterized in that: it also comprises an electric supply installation, and electric supply installation includes a rechargeable battery of being supported by handle, and it is connected with control panel with vacuum pump in handle.

8. hand-held vacuum air pump according to claim 1 is characterized in that: described valve port is made up of following each several part: a vacuum noz(zle), and it comprises a nozzle, and nozzle has the vacuum chamber of increasing and is arranged in the fluid intake of handle vacuum head; A vacuum pump of supporting by handle, one and vacuum pump bonded assembly sensing switch.

9. hand-held vacuum air pump according to claim 8 is characterized in that: described vacuum noz(zle) is provided with the sensor outlet and the outlet of bleeding.

10. hand-held vacuum air pump according to claim 9 is characterized in that: described vacuum noz(zle) comprises a sensing pipe, and sealing ground extends to the sensing chamber from the sensor outlet; It also comprises a drinking-water pipe, and sealing ground extends to vacuum pump from the outlet of bleeding; Also comprise an electric supply installation, electric supply installation includes a rechargeable battery of being supported by handle, is connected with control panel with the vacuum pump of moulding on handle.

Images