CN2191930Y - Two stage non-return booster-type high pressure pedal air pump - Google Patents

Abstract

The utility model relates to a two-stage non-return pressurizing-typed high-pressure pedal air pump used for inflating, comprising an upper and a lower support frames which are hinged, an air pressing cylinder and an air storing cylinder which are coaxially sheathed, and are in the piston-shaped structure to form a hinge-shaped moving triangle. Two first stage one-way check valve are respectively arranged between the air pressing cylinder and the air storing cylinder, and between the air storing cylinder and an air outlet pipe to generate a secondary pressurizing function. A barometer is arranged on an air outlet to display the inflation pressure. The air pump has compact integral structure and convenient carrying, and the inflation pressure can reach 7 kg/cm <2>. The utility model can be used for the inflation of various vehicles, and the sporting equipment.

Description

Two stage non-return booster-type high pressure pedal air pump

The utility model relates to a kind of secondary non-return supercharging type high pressure treadle air pump that is used to inflate.

Various in the prior art hand-operated air pumps, foot-operated air pump generally is not provided with one way stop peturn valve or the one-level one way stop peturn valve is only arranged, and inflation pressure only reaches 3～4Kg/CM ², can only be used for bicycle and low inflation, just difficult to the inflation of doughnut and sports equipment.

It is a kind of easy to use, laborsaving that the purpose of this utility model is to provide, the treadle air pump that inflation pressure is high.

In order to achieve the above object, the utility model adopts following technological scheme, referring to figure, pneumatic tube and gas cartridge is designed to coaxial package piston-like structure, forms the hinge-like bolt cam with last lower support frame; Between pneumatic tube and gas cartridge, between gas cartridge and the high pressure steam outlet pipe one-level one way stop peturn valve is set respectively, make air pump pass through two-stage supercharging, high pressure steam outlet pipe output pressure reaches 7Kg/Cm ², can give the inflation of various automobile tires and sports equipment easily.During use, foot application of force on wood clapper by last lower support frame, is depressed the piston of gas cartridge end to the pneumatic tube bottom, and compressed air is broken through first order one way stop peturn valve, enters in the gas cartridge.(referring to Fig. 2) pressurized air is pushed valve body (14) inner chamber open from a valve plug (13) is to moving to left, and the valve gap (12) by hollow enters gas cartridge from b, obtains a supercharging.When making progress under the effect of wood clapper at reduction torsion spring, gas cartridge drives piston and pulls out, this moment, the pneumatic tube internal air pressure was less than the gas cartridge internal air pressure, valve plug is pushed the right to, seal a place passage, the gas cartridge internal pressure is kept, and when wood clapper constantly moves up and down, the air pressure in the gas cartridge will constantly increase.The other end of gas cartridge is connected to second level one way stop peturn valve, and principle is the same with first order safety check.Be connected to the high pressure steam outlet pipe behind the secondary safety check, can directly be connected with the tire that needs inflation, gas cartridge will be constantly to Tyre inflating.When inflation is higher than the gas cartridge internal air pressure in tire (wood clapper was in and loosened backhaul this moment), the secondary safety check is had an effect, stop the high pressure inner air tube of giving vent to anger to flow backwards, form the situation that tracheae, gas cartridge, pneumatic tube pressure successively decrease step by step, produce the effect of secondary non-return supercharging to gas cartridge.

The utility model compared with prior art, advantage is obvious.When the wood clapper dynamics was enough, it can make the pressure of air pump fully obtain utilizing, and reduces the leakage of air pressure when loosening backhaul, makes the manpower air pump be applicable to the place that pressure is higher.

The description of the drawings:

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the structure principle chart of the one way stop peturn valve that adopts in the utility model.

Embodiment of the present utility model is: referring to Fig. 1, one forms the lower support frame (6) of base and the upper bracket (1) hinged with (6) end, articulated pneumatic tube (5) on lower support frame, articulated gas cartridge (2) on upper bracket, piston (3) is equipped with in the end of gas cartridge, close plug is in pneumatic tube, and gas cartridge and piston can move up and down in pneumatic tube.The other end of gas cartridge is equipped with second level one way stop peturn valve (9), connects high pressure steam outlet pipe (10) again and is directly used in inflation.Barometer (8) is equipped with in the outlet port of secondary safety check, so that show inflation pressure.(being between pneumatic tube and the gas cartridge) is equipped with first order one way stop peturn valve (4) at gas cartridge piston place.In last lower support frame hinged place one reduction torsion spring (11) is set.One wood clapper (7) is set in the upper end portion of upper bracket, is convenient to firmly.One way stop peturn valve is by valve body (14), valve gap (12), and valve plug (13) is formed, and valve plug can move freely at body cavity, and the valve gap diameter is convenient to install greater than valve plug, and valve plug can adopt taper shape, also can adopt sphere, and present embodiment adopts conical.

Claims (2)

1, a kind of secondary non-return supercharging type high pressure treadle air pump that is used to inflate, include a lower support frame (6) that forms base, the upper bracket hinged (1) with the lower support frame end, be hinged on the pneumatic tube (5) on (6) and be hinged on gas cartridge (2) on (1), (2) piston (3) is equipped with in the end, close plug is in (5), the other end of gas cartridge is equipped with high pressure steam outlet pipe (10), it is characterized in that pneumatic tube and gas cartridge are designed to coaxial package piston-like structure, form the hinge-like bolt cam with last lower support frame; Between pneumatic tube and gas cartridge, one-level one way stop peturn valve (4) and (9) are set respectively between gas cartridge and the high pressure steam outlet pipe.

2, air pump according to claim 1 is characterized in that high pressure steam outlet pipe place is provided with a barometer (8); In last lower support frame hinged place one reduction torsion spring (11) is set; One wood clapper (7) is set in the upper end portion of upper bracket.