CN201215075Y

CN201215075Y - Hand-pressing vacuum pump

Info

Publication number: CN201215075Y
Application number: CNU2007201507589U
Authority: CN
Inventors: 李建荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-11
Filing date: 2007-09-11
Publication date: 2009-04-01
Anticipated expiration: 2017-09-11

Abstract

The utility model relates to a hand press vacuum pump, which comprises a stationary piston with a one-way valve and a hollow piston rod, and a movable air cylinder with a one-way valve. Vacuum production can be realized through a force down action, vacuum production can be realized through the force down of the gravity of the whole human body as the operation method of an inflator for a bicycle, thereby the pump can be applied to different vacuum equipment without a bulky air extractor, such as a power motor. In addition, the vacuum level can be lost after a canned vacuum packing container is opened, thereby the hand press vacuum pump can recover the original vacuum. In order to system leak finding, vacuum is required to be maintained for a long time when the hand press vacuum pump is applied to a plurality of aspects, such as the vacuum pumping of an air-cooling system, and in order to meet the requirements, a rotation locking system and a closing valve can be installed on the hand press vacuum pump. The rotation locking system can fix the movable air cylinder on the stationary piston, and the closing valve comprises a valve rod with a sealing ring and a return spring.

Description

Hand-operated vacuum suction tube

Technical field

The utility model relates to a kind of vacuum pumping device of manually operated type, relates in particular to a kind of with the next vacuum vacuum pumping device of pressure.

Background technique

At present, manual pump generally applies to inflate ball, ball, bicycle tire etc., and is rare with the next vacuum manual pump bowl of manual pump.Though general pump principle can make pump bowl into, it mainly all produces vacuum with pulling force, and hand one draws, and mobile piston makes volume become big, produces pull of vacuum.

But with respect to the action of drawing, people can more successfully finish the action of pressure, because the action of pressing can be by means of the gravity of human body, and the action of drawing only can only be leaned on people's strength itself.For pump bowl, if the air that need take out is more, will certainly consume considerable muscle power, and the state of difficult formation perfect vaccum.

The model utility content

The object of the present invention is to provide a kind of hand-operated vacuum suction tube, can not be the vacuum technical problem of power with pressure to solve general hand-pulling type pump bowl.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of hand-operated vacuum suction tube is provided, comprise: one has the fixed piston 4 of one-way valve 19, its lower end connects a box type piston bar 8, and the upper end of described box type piston bar 8 has through hole 11, and the lower end connects the end of bleeding; One upper end has one-way valve 16 and comprises fixed piston 4 and along the moving cylinder 3 of box type piston bar 8 moving linearlies.

Above-mentioned hand-operated vacuum suction tube, through hole 11 can be arranged in the fixed piston 4.Can be provided with a return spring 2 in the moving cylinder 3.One-way valve 16 on the moving cylinder 3 can be a through hole.Can be provided with between moving cylinder 3 and the fixed piston 4 and be used for keeping a not fixing rotation locking device 26 of time spent of moving cylinder 3 and fixed piston 4.Can be provided with a draught excluder 27 in order to the interior conduit 9 of closed hollow piston rod 8 in the box type piston bar 8.

The beneficial effects of the utility model are: the user can press down or with the hands hold handle and press down with the weight of whole body, has good point of application of force, and can produce very high degree of vacuum, cooperate rotation locking device and closing valve again, can keep the permanent vacuum state of system.Because of simple in structure, can be connected in to make and make it become one of them component on the appliance, as vacuum vessel refrigerator etc.

Description of drawings

Fig. 1 is for once vacuum type, non-diaphragm type one-way valve were used for the return state embodiment side view of vacuum bottle cap;

Fig. 2 is depressed state embodiment's side view that two degree vacuum type, diaphragm type one-way valve are used for vacuum box;

The side view that the solid lock of rotation was opened and draught excluder is opened when Fig. 3 was the return state of once vacuum type, non-diaphragm type one-way valve;

The side view that solid lock of rotation and draught excluder were closed when Fig. 4 was the depressed state of two degree vacuum type, diaphragm type one-way valves.

Among the figure: 1, this pump bowl equipment, 2, return spring, 3, moving cylinder, 4, fixed piston, 5, through hole, 6, seal ring, 7, seal ring, 8, the box type piston bar, 9, interior conduit, 10, suction nozzle, 11, through hole, 12, lower chamber, 13, upper gas chamber, 14, vent, 15, film, 16, one-way valve, 17, film, 18, through hole, 19, one-way valve, 20, the round bottom dish, 21, joint, 22, flexible pipe, 23, chuck, 24, fall L shaped hook, 25, the inverted T-shaped hook, 26, the rotation locking device, 27, draught excluder, 28, return spring, 29, valve rod, 30, seal ring, 31, the film annular ring, 32, one-way valve.

Embodiment

Below in conjunction with accompanying drawing, specify the present invention.

The vacuum suction tube, be accustomed to smoothly in order to comply with the action that human nature draws the action comparison of pressing, an embodiment of the utility model hand-operated vacuum suction tube as shown in Figure 1, comprise whole fixed piston 4 and formed by a fixed piston 4 with box type piston bar 8 and one along the moving cylinder 3 of box type piston bar 8 moving linearlies.

In box type piston bar 8 upper ends, being lower than fixed piston 4 places slightly has a through hole 11, is communicated with the interior conduit 9 and the lower chamber 12 of box type piston bar 8; Its through hole 11 also can be positioned at fixed piston 4.If need the equipment interface place of vacuum not have one-way valve, then one recessed pipe is arranged, so that hold a film annular ring 31 at these through hole 11 places.By film annular ring 31 encase through hole 11 and the one-way valve 32 that forms as shown in Figure 1.And in box type piston bar 8 bottoms one suction nozzle 10 is arranged, cooperate sealing to need air-breathing bottle cap hole to seal and bleed.

There is a seal ring 6 to be used for sealing gap between fixed piston 4 and the moving cylinder 3 on the circumference of fixed piston 4.Have the one-way valve 19 that covered by film 17 on several through holes 18 as shown in Figure 2 in fixed piston 4 upper ends, film 17 can be the thin slice of any material, borrows the bending deflection ventilation.The through hole 5 that this one-way valve 19 also can be communicated with upper gas chamber 13 by the seal ring 6 and fixed piston 4 upper ends of fixed piston 4 is constituted.When seal ring 6 moves down with moving cylinder 3, slit between sealing and the fixed piston 4 reaches the purpose of sealing earlier, and can produce slit when oppositely mobile up, the air stream in the lower chamber 12 is discharged again, so just like the function of one-way valve 19 by through hole 5 through the slit.For saving the space, its through hole 11 also can be positioned at fixed piston 4.

There is vent 14 to communicate in moving cylinder 3 upper ends with the external world.This vent 14 can be through hole or is the one-way valve 16 that film 15 is covered in vent 14, and it allows the unidirectional atmosphere that flows out to of air in upper gas chamber 13.This one-way valve can produce the effect of two degree vacuum.

When the seal ring 7 of moving cylinder 3 bottoms when mobile, the gap between sealing moving cylinder 3 and the box type piston bar 8.Because of the people is accustomed to pressing action, can be provided with a return spring 2 and help moving cylinder 3 returns, also can not need return spring 2 manual returns.

With reference to figure 1 and Fig. 2, when depressing moving cylinder 3, lower chamber 12 space enlargement.Thereby the generation pull of vacuum, holding seal ring 6, seal ring 6 moves down and seals gap between fixed piston 4 lower ends and the moving cylinder 3 with moving cylinder 3 walls.In needing the container of vacuum, air is through suction nozzle 10, interior conduit 9, and one-way valve 32 or through hole 11 arrive the therapeutic methods to keep the adverse qi flowing downward and stop up 12, and simultaneously, upper gas chamber 13 spaces dwindle, and its air is discharged through vent 14.

With reference to figure 1 and Fig. 2, when moving cylinder 3 usefulness manually draw high or return spring 2 when raising, the one-way valve 32 that is provided with one-way valve or the free stopper rod of being indecisive and changeable at the equipment interface place that needs vacuum stops air circulation to go into to need the equipment of vacuum, air in the lower chamber 12 is compressed and pushes seal ring 6 to top and mobile with the contact of moving cylinder 3 walls, air in the lower chamber 12 is by fixed piston 4 lower ends and moving cylinder 3 gaps, and the through hole on fixed piston 4 edges 5 arrives upper gas chamber 13 then.When next circulation time moving cylinder 3 was depressed, the air in the upper gas chamber 13 was discharged by vent 14.

With reference to figure 2, when vent 14 is an one-way valve 16, promptly produce the effect of two degree vacuum.When moving up because of moving cylinder 3, upper gas chamber 13 can produce vacuum, and this vacuum can make upper gas chamber 13 just have the state of degree of vacuum before beginning to produce vacuum.Compared to the mode of aforesaid vent 14, adopt the mode of one-way valve 16 to have stronger vacuum ability.Fig. 2 also discloses the one-way valve 19 of one-way valve 19 for being made up of film 17 covering through holes 18 on the fixed piston 4.

In many application, as vacuumizing at cooling air system etc., all need keep very long a period of time of vacuum, so that make system's leakage detection, even pump bowl become the some of this equipment, as Vacuum refrigerator etc.So the utility model also can add a rotation locking device 26 and a draught excluder 27 is required to comply with.Rotation locking device 26 can be arbitrary form, is one and can fixes the mechanism of moving cylinder 3 on fixed piston 4.As Fig. 3, shown in Figure 4, can fall L shaped hook 24 by a pair of on fixed piston 4 and cooperate the inverted T-shaped hook 25 in the moving cylinders 3 to be formed, latch hook also can be a screw thread composition that matches.Moving cylinder 3 rotations one angle just can be broken off relations, moving cylinder 3 can be risen; After depressing moving cylinder 3, despining one angle makes inverted T-shaped hook 25 hook down L shaped hook 24, or with the thread on the screw-in of the thread on the moving cylinder 3 fixed piston 4, and moving cylinder 3 is fixing with fixed piston 4.Draught excluder 27 is made up of a valve rod 29 and the return spring 28 with seal ring 30.Then open when time on the through hole 11 of seal ring 30 at box type piston bar 8, when seal ring 30 is under through hole 11, then seal interior conduit 9.When rotation locking device 26 in solid lock position as shown in Figure 4, it is downward to suppress valve rod 29, and makes seal ring 30 at the interior conduit 9 of the lower end closed box type piston bar 8 of through hole 11 fidelity sky forever.Otherwise the rotation locking device 26 lock state admittedly as shown in Figure 3 non-, valve rod 29 under the effect of return spring 28, and make seal ring 30 open the interior conduit 9 of box type piston bar 8 in the upper end of through hole 11.

More than disclosed only be several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, all should drop in protection scope of the present invention.

Claims

1, a kind of hand-operated vacuum suction tube is characterized in that, comprising:

One has the fixed piston (4) of one-way valve (19), and its lower end connects a box type piston bar (8), and the upper end of described box type piston bar (8) has through hole (11), and the lower end connects the end of bleeding;

One can be along the moving cylinder (3) of box type piston bar (8) moving linearly, and its upper end has one-way valve (16) and it comprises fixed piston (4).

2, hand-operated vacuum suction tube as claimed in claim 1 is characterized in that, described through hole (11) is arranged in the fixed piston (4).

3, hand-operated vacuum suction tube as claimed in claim 1 is characterized in that, is provided with a return spring (2) in described moving cylinder (3).

4, hand-operated vacuum suction tube as claimed in claim 1 is characterized in that, the one-way valve (16) on described moving cylinder (3) is a through hole.

5, as each described hand-operated vacuum suction tube of claim 1 to 4, it is characterized in that, between described moving cylinder (3) and fixed piston (4), be provided with and be used for keeping a not fixing rotation locking device (26) of time spent of moving cylinder (3) and fixed piston (4).

6, hand-operated vacuum suction tube as claimed in claim 5 is characterized in that, is provided with the draught excluder (27) of an interior conduit in order to closed hollow piston rod (8) (9) in described box type piston bar (8).