CN2750074Y

CN2750074Y - Air pump

Info

Publication number: CN2750074Y
Application number: CN 200420102469
Authority: CN
Inventors: 石正兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-10
Filing date: 2004-12-10
Publication date: 2006-01-04
Anticipated expiration: 2014-12-10

Abstract

The utility model relates to an air pump. The utility model comprises a sleeve and a sleeve nozzle sheathed on the sleeve, wherein the interior of the sleeve is provided with a piston connected with a handle through a draw rod. The utility model is characterized in that the sleeve nozzle is provided with air pumping holes; a groove is arranged above the air pumping hole on one end where the sleeve nozzle and the sleeve are in sleeve joint, and an air blocking sheet matched with the groove is placed in the groove. As the air blocking sheet can not deviate from the groove no matter when air is pumped or a piston is pushed to reset to carry out next air pumping, air in the sleeve can be prevented from reflowing into a packaging body to be pumped, such as a vacuum bag, etc. when the piston is pushed back; accordingly, the vacuum pumping can be carried out for the packaging body with few air pumping times and in a short time, and the vacuum-pumping efficiency is improved; simultaneously, the utility model has the advantages of simple structure, large air pumping quantity and labor saving; the sleeve nozzle and an air pumping nozzle of the packaging body can be easily matched, the use is convenient and the purpose of vacuum pumping can be thoroughly achieved.

Description

A kind of pump bowl

[technical field]

The utility model relates to a kind of pump bowl, refers in particular to the pump bowl that is used to vacuumize.

[background technique]

Be used for pump bowl to the vacuum bag exhaust now, when carrying out continuous air extraction, because blocking imprecision, when piston being pushed back preparation and bleeds next time, some can flow back to air in the sleeve in the packing body such as vacuum bag again, and causing spurring the number of times that piston bleeds increases, and has reduced the working efficiency that vacuumizes, and air that all the time can be remaining a part of in the packing body, its effect that vacuumizes is relatively poor.

[model utility content]

The purpose of this utility model is, is to overcome the deficiency of above-mentioned technical problem, provide a kind of simple in structure, vacuumize the pump bowl that efficient is high and vacuumize better.

The utility model is to adopt following technical proposals to realize:

A kind of pump bowl, include sleeve, be enclosed within the tube mouth of sleeve, in sleeve, be provided with piston is installed, this piston is connected with handle by pull bar, it is characterized in that: on the tube mouth, have bleeder hole, above the bleeder hole of the end that tube mouth and sleeve socket-connect, have a groove, in this groove, place a gas barrier plate that is complementary with this groove.

Aforesaid a kind of pump bowl is characterized in that: gas barrier plate is the thin slice that soft material is made.

Aforesaid a kind of pump bowl is characterized in that: the end of gas barrier plate by the chamber wall pressure of sleeve in the groove of tube mouth.When the promotion piston reset is bled next time, gas barrier plate can not depart from groove, when pushing back, piston can prevent that like this air in the sleeve from flowing back in the packing bodies such as vacuum bag that will bleed again, so the number of times of bleeding that can be less, vacuumize to packing body in the short period of time, improved the efficient that vacuumizes, simultaneously of the present utility model simple in structure, rate of air sucked in required is big, laborsaving, its mouth cooperates easily with the mouth of bleeding of packing body, easy to use like this, can reach the purpose that vacuumizes up hill and dale.

[description of drawings]

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is the structural representation of tube mouth of the present utility model;

Fig. 4 is the right elevation of Fig. 3.

[embodiment]

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

The utility model includes sleeve 1 and the tube mouth 2 that is enclosed within on the sleeve 1, is provided with in sleeve 1 piston 3 is installed, and this piston 3 is connected with handle 5 by pull bar 4, bleeds with hold the piston 3 that spurs in the sleeve 1 on handle 5.

Sleeve 1 is the cavity of a hollow, and the one end is compressed into the cavity 6 of a mouth 2, and pull bar 4 inserts and is connected with piston 3 in the sleeve 1 from the other end of sleeve 1, and the other end of pull bar 4 is fixedlyed connected with handle 5.On tube mouth 2, have bleeder hole 7, be the air in the packing body such as extracting vacuum bag better, above the bleeder hole 7 of tube mouth 2 and an end of sleeve 1 socket, have a groove 8, the gas barrier plate 9 that placement one and this groove 8 are complementary in this groove 8, the thin slice that gas barrier plate 9 is made for soft material, its width is bigger than the bleeder hole 7 of tube mouth 2, can be enough to like this clog bleeder hole 7 in case the air in the sleeve 1 flows back in the packing body such as vacuum bag.The two end part 10 of gas barrier plate 9 are pressed in the mouth 2 by the chamber wall 11 of sleeve 1, when bleeding, under the positive air pressure effect in bleeder hole 7, gas barrier plate 9 produces slits with the diapire 12 of the cavity 6 of tube mouth 2 after the generation deformation of gas barrier plate 9 middle parts, so the air in the bleeder hole 7 were bled in this slit enters sleeve 1 afterwards; Then promote piston 3 resets when bleeding next time, gas barrier plate 9 produces and resets in the groove 8 under the residual air effect in sleeve 1, thereby bottle up bleeder hole 7 in order to avoid the air in the sleeve 1 flows back in the packing body again, like this number of times that can be less, vacuumize to packing body in the short period of time, improved the efficient that vacuumizes.It is longer that tube is used for the length of the valve axle 13 that is connected with the mouth of bleeding of packing body on the mouth 2, valve axle 13 fully injected insert in the valve and do not leak gas.

The utility model in use, fully inject the valve axle on the tube mouth 2 13 in the mouth of bleeding of packing body, bleed with pulling moving handle 5, gas barrier plate 9 produces deformation under the positive air pressure effect of bleeder hole 7, the slit of air between the diapire 12 of gas barrier plate 9 and tube mouth 2 enters in the sleeve 1 and is drawn out of like this, promoting handle 5 then resets piston 3, gas barrier plate 9 resets to and clogs bleeder hole 7 in the groove 8 under the residual air effect in sleeve 1, prevent that the residual air in the sleeve 1 from flowing back in the packing body air in the packing bodies such as the vacuum bag of just can finding time fully with less number of times again.

Claims

1. pump bowl, include sleeve (1) and be enclosed within sleeve (1) the tube mouth (2), in sleeve (1), be provided with piston (3) is installed, this piston (3) is connected with handle (5) by pull bar (4), on tube mouth (2), have bleeder hole (7), it is characterized in that: above the bleeder hole (7) of the end that tube mouth (2) and sleeve (1) socket-connect, have a groove (8), the gas barrier plate (9) that placement one and this groove (8) are complementary in this groove (8).

2. according to right 1 described a kind of pump bowl, it is characterized in that: the thin slice that gas barrier plate (9) is made for soft material.

3. according to right 1 or 2 described a kind of pump bowls, it is characterized in that: the end (10) of gas barrier plate (9) is pressed in the groove (8) of a mouth (2) by the chamber wall (11) of sleeve (1).