CN2305497Y

CN2305497Y - Portable two purpose tube for air pumping and inflation

Info

Publication number: CN2305497Y
Application number: CN 97204300
Authority: CN
Inventors: 席培根
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-30
Filing date: 1997-04-30
Publication date: 1999-01-27
Anticipated expiration: 2007-04-30

Abstract

The utility model relates to a portable two purpose tube for air pumping and inflation, comprising a base and a tube body on a top cover. A piston is positioned in the tube body and divides the tube body into upper and lower chambers. A piston rod extends out the top cover of the tube body, and the top part of the piston rod is provided with a foot board. A return spring is arranged at the middle of the foot board. The top cover is provided with an air pumping port communicated with the upper chamber. The base is provided with an exhaust port communicated the lower chamber. A check valve composed of a valve core, a sealing strip sheathed on the valve core, and a valve seat is arranged in the exhaust port. The foot board on the top part of the piston rod is provided with a shallow slot fixed to a portable ring. The utility model has the advantages of simple structure, low manufacture cost, and high vacuum-pumping degree; the portable two purpose tube for air pumping and inflation is convenient to carry.

Description

Portable bleeding inflated dual-purpose

The utility model relates to a kind of portable bleeding and inflates dual-purpose.

The vacuum freshness retaining of food causes people's interest and attention day by day, now the vacuum pumping device sale price of the vacuum air pump of supplying on the market and vacuum seal wrapping machine and so on is all about thousands of units and even ten thousand yuan, only being suitable for operation in enormous quantities, is inappropriate for general unit and family.Therefore, the someone develops the small-sized instrument of bleeding successively, so that vacuum freshness retaining enters ordinary family early.In the patented technology exhibition that Patent Office in 1991 sponsors, put on display a kind of pump of bleeding, but because it is directly to bleed or inflate with the hand pull, and steering force is very big, to the weakling and be not suitable for.

For this reason, the applicant has proposed a kind of " the light pump of bleeding " in the patent No. is 91225503 utility model patent, this pump both can be bled, also can inflate operation, not only available foot-operated but also can adopt lever to operate, saved a large amount of muscle power, old weak person also can easily use; Adopted widely by family and school duty room after coming into the market.

Yet the existing this pump of bleeding has a suction port, a bleeding point and a relief opening, and only utilizes two mouths wherein in use, and pistons end must be provided with other removable seal, so structure is complicated, manufacture cost is higher; Adopt a ring fixed reset spring in the existing in addition this pump of bleeding, so that in the piston rod indentation cylindrical shell, when carrying or pack, do not account for volume, very easily slippage when yet this ring is fixed on the wood clapper surface, piston rod ejects, and cause package failure even hurt sb.'s feelings, therefore need badly the existing light pump of bleeding is improved.

The purpose of this utility model is to provide a kind of light bleeding to inflate dual-purpose, and it is simple in structure, and cost is low, and is easy to carry, can reach higher degree of vacuum.

For this reason, portable bleeding of the present utility model inflated dual-purpose tube and comprised the cylindrical tube that has base and top cover, one piston is positioned at cylindrical shell and becomes slipper seal with cylindrical shell, and upper and lower chamber will be divided in the cylindrical shell, its piston rod stretches out the cylindrical shell top cover, and piston rod part is a wood clapper, the outer Returnning spring that is arranged with of the piston rod part between described wood clapper and the top cover; Its characteristics are: top cover has a bleeding point to be communicated with cylindrical shell upper chamber, and the cylindrical shell base is provided with a relief opening that is communicated with the cylindrical shell lower chambers, is provided with an one-way valve in the relief opening, and described one-way valve is made of the diaphragm seal that a spool and is set on the spool; The wood clapper of described piston rod part surface central authorities are provided with a shallow slot that is used for fixing portable ring.

Compare with the portable pump of bleeding of prior art, dual-purpose inflator of the present utility model is beyond the original double-purpose functional of bleeding, inflate of maintenance, since the one-way valve structures that former cause roller (steel ball) and spring are constituted change over present by spool be set in the one-way valve that the diaphragm seal on the spool constitutes, thereby the sealability of valve is improved, thereby improved accessible degree of vacuum; In addition,, simplified the sealing configuration of pistons end thus, thereby simplified overall structure, therefore reduced manufacture cost owing to directly utilizing the hole that is connected with top cover to save the former bleeding point of being located on the base as bleeding point; In addition, be provided with a shallow slot in wood clapper surface central authorities in the utility model, be used for compression reseting spring and portable ring is easy to be fixed in reliably wherein, carry with transportation process in be difficult for taking place ring slippage piston rod and eject the phenomenon of damaging packaging container.

Be described in detail below in conjunction with drawings and Examples, so that advantage of the present utility model and characteristics are had further understanding and understanding.

Fig. 1 is a sectional view of the present utility model;

The view sub-anatomy of the one-way valve that Fig. 2 (a-c) is in the utility model to be adopted;

The view sub-anatomy of the piston that Fig. 3 (a-b) is in the utility model to be adopted.

See also Fig. 1, of the present utility model bleeding inflated dual-purpose tube and comprised that cylindrical tube 1, cylindrical shell 1 have top cover 2 and base 3.One piston 4 is positioned at cylindrical shell 1 and cylindrical shell is divided into upper chamber 5 and lower chambers 6, and piston rod 7 passes top cover 2, has a bleeding point 8 to be connected with upper chamber 5 on the top cover 2, and has Sealing, can realize slipper seal with piston rod.

Base 3 is formed with a relief opening 9, and is connected with lower chambers 6 by passage separately, and an one-way valve 10 is arranged in the relief opening 9.See also shown in Fig. 2 (a-c), this one-way valve 10 can be made of by sheathed rubber gasket 10b thereon a spool 10a,, and is fixed in the relief opening 9 by the screw thread on its outer circumferential face by a valve seat 10c.

See also Fig. 3, piston 4 is middle dumbbell shaped structure of dwindling, and an O type ring 4b winding is in the middle reentrant part of reduced, and piston 4 left parts (underpart among Fig. 1) is provided with several through holes 4a and is connected with lower chambers 8.

Piston rod 7 tops adopt worm structure to be connected with a wood clapper 11, and a Returnning spring 12 is between wood clapper 12 and top cover 2 and round piston rod 7.The user can operate with foot-operated mode, loosens after pin is stepped on, and Returnning spring 12 can make piston up automatically, gets back to a high position.

In addition, for ease of carrying and packing, also be fixed with a ring 13 on base 3, this ring 13 can rotate in vertical plane, so that can be fastened in the wood clapper surface, and Returnning spring compression is fixing, to reduce dual-purpose inflator shared space when carrying and deposit.Not slippage from it is provided with a shallow slot 14 for the ring fixing on the wood clapper surface in the utility model in order to make ring 13 can be fixed in the wood clapper surface reliably.

During use, because of bleeding point and relief opening connect flexible pipe 15 respectively, 15 ', and connect container respectively; Descent of piston, O type ring 4b pastes and is butted on the recessed upper limb anchor ring of piston 4 intermediate portions, seal the passage between upper chamber 5 and the lower chambers 6, along with upper chamber's 5 volumes increase, wherein negative pressure increases, to treat air in the vacuum-pumping container by flexible pipe 15 and bleeding point 8 suction upper chamber 5, the one-way valve 10 of relief opening is in opening state simultaneously, and the air in the lower chambers 6 is by outside piston 4 expelling tubes; And when piston 4 is up, the sliding lower edge anchor ring that supports piston 4 middle reentrant part of O type ring 4b, pressure constantly increases in the upper chamber 5, owing to be communicated with by through hole 4a between upper chamber 5 and the lower chambers 6, so the air of upper chamber 5 enters in the lower chambers 6, relief opening one-way valve 10 is closed at this moment.

Because the one-way valve that the utility model adopted is made of spool, rubber gasket and valve seat, so good seal performance.In addition, when container after reaching the certain vacuum degree, the upper and lower chamber of cylindrical shell pressure reduction is more and more littler, so degree of vacuum is high more, the more leicht fallen D/A of bleeding is until reaching high degree of vacuum performance.

Claims

1. portable bleeding inflated dual-purpose, comprise the cylindrical tube that has base and top cover, one piston is positioned at cylindrical shell and becomes slipper seal with cylindrical shell, and upper and lower chamber will be divided in the cylindrical shell, its piston rod stretches out the cylindrical shell top cover, and piston rod part connects a wood clapper, the outer Returnning spring that is arranged with of the piston rod part between described wood clapper and the top cover; It is characterized in that: top cover has a bleeding point, upper chamber is communicated with cylindrical shell, and have Sealing and can realize slipper seal with piston rod, the cylindrical shell base is provided with a relief opening that is communicated with the cylindrical shell lower chambers, be provided with an one-way valve in the relief opening, described one-way valve is made of a diaphragm seal and the valve seat that a spool, is set on the spool; The wood clapper of described piston rod part surface central authorities are provided with a shallow slot that is used for fixing portable ring.

2. as claimed in claim 1 bleeding inflated dual-purpose tube, it is characterized in that: described bleed and relief opening respectively is connected to a flexible pipe.

3. as claimed in claim 1 bleeding inflated dual-purpose, and it is characterized in that: described piston is the dumbbell shape that mid diameter dwindles, reentrant part in the middle of an O type is looped around, and the piston bottom has several through holes to be communicated with lower chambers.