CN207064175U - A kind of secondary compressed air pump - Google Patents

Abstract

The utility model discloses a kind of secondary compressed air pump, belong to onboard accessory technical field, it includes motor and cylinder, is characterised by：One stage of compression piston is equipped with first air cavity, the first air admission hole and steam vent are offered in one stage of compression piston, the first air admission hole connects the first air cavity and power cavity, the first check valve is set on the first air admission hole；Two-stage compression piston is equipped with second air cavity, the second air admission hole is opened up on two-stage compression piston, the second air admission hole is connected with steam vent, and the second check valve is set on the second air admission hole, and gas outlet is opened up in the side wall of the second air cavity, the 3rd check valve is installed on gas outlet；Power cavity sets suction nozzle, and piston rod, piston rod one end connection one stage of compression piston, other end connection two-stage compression piston are set in power cavity.Compressed gas in first air cavity enters the second air cavity after reaching some strength, carries out second compression again, reduces inflationtime；And the first air cavity and the alternately air inlet of the second air cavity and compression, save energy resource consumption.

Description

A kind of secondary compressed air pump

Technical field

The utility model belongs to onboard accessory technical field, and in particular to a kind of secondary compressed air pump.

Background technology

Because air spring has good coefficient of elasticity, its soft or hard degree can automatically adjust as needed, by with In the suspension of vehicle.In high vehicle speeds, air spring is hardened to improve the stability of vehicle body；Run at a low speed When, air spring softens to improve damping comfortableness.So the vehicle equipped with air spring possesses higher behaviour than other automobiles Control the limit and comfort level so that air spring is widely applied and promoted on vehicle.

In actual applications, compressed air generally is provided for air spring by air pump, realizes the elasticity system of air spring Number regulation.When air spring needs to be hardened, air pump work, high pressure air is pressed into.But during inflation, air pump The problem of operating efficiency is low be present.

The content of the invention

Technical problem to be solved in the utility model is to provide a kind of secondary compressed air pump, can be by improving air Compressive strength improve charging efficiency.

In order to solve the above technical problems, the technical solution of the utility model is：A kind of secondary compressed air pump is designed, including Motor and cylinder, it is characterised in that：Offered in cylinder and be sequentially connected the first logical air cavity, power cavity and the second air cavity；

One stage of compression piston is equipped with first air cavity, the first air admission hole and steam vent are offered in one stage of compression piston, the One air admission hole connects the first air cavity and power cavity, and the first check valve is set on the first air admission hole；

Two-stage compression piston is equipped with second air cavity, opens up the second air admission hole on two-stage compression piston, the second air admission hole with Steam vent is connected, and the second check valve is set on the second air admission hole, and gas outlet is opened up in the side wall of the second air cavity, is pacified on gas outlet Fill the 3rd check valve, gas outlet connection charging connector；

Suction nozzle is set on power cavity, piston rod is set in power cavity, crank connecting link, crank connecting link connection are set on stopper rod Motor, one end connection one stage of compression piston, the other end connection two-stage compression piston of piston rod.

Preferably, exhaust branch is also connected on the charging connector, electromagnetic switch valve is set on exhaust branch.

Preferably, overbottom pressure control valve is also set up on the exhaust branch.

Preferably, the outlet side connection power cavity of the overbottom pressure control valve.

Preferably, the overbottom pressure control valve is the first resilient plug.

Preferably, drying chamber is added between the gas outlet and charging connector.

Preferably, first check valve and the second check valve are valve block.

Preferably, the 3rd check valve is the second resilient plug.

Compared with prior art, the beneficial effects of the utility model are：

1st, because the both ends of piston rod connect one stage of compression piston and two-stage compression piston respectively, on the one hand in the first air cavity Compressed gas reach and enter the second air cavity after some strength, carry out second compression again, compressive strength improved, when reducing inflation Between；On the other hand the first air cavity and the alternately air inlet of the second air cavity and compression, save energy resource consumption.

2nd, due to also connecting exhaust branch on charging connector, electromagnetic switch valve is set on exhaust branch, is easy to air spring Automatic gas exhaust inspecting.

3rd, due to also setting up overbottom pressure control valve on exhaust branch, enable to remain with some residual sky in air spring Gas, beneficial to the service life for extending air spring.

4th, because the outlet side of overbottom pressure control valve connects power cavity, the suction nozzle of power cavity can be utilized to be exhausted, letter Change structure.

5th, due to adding drying chamber between gas outlet and charging connector, compressed air can be dried, is air spring Dry compressed air is supplied, further extends its service life.

6th, due to the setting of crank connecting link, the rotary motion of motor can be converted to the translational motion of piston rod, widened To the Application Range of power set.

7th, it is both simple in construction because the first check valve and the second check valve are valve block, it is easy to control；Reduce again to air cavity Occupancy volume.

8th, because the 3rd check valve selects the structure of resilient plug, while simple in construction, it is easy to elastic force to adjust, changes outlet Air pressure.

9th, the utility model is simple in construction, realizes the second-compressed of gas, and air inlet is carried out simultaneously with compression in two air cavitys, Both charging efficiency is improved, energy resource consumption is saved again, is easy to popularization and application in industry.

Brief description of the drawings

Fig. 1 is dimensional structure diagram of the present utility model；

Fig. 2 is Fig. 1 A direction views；

Fig. 3 is B-B sectional views in Fig. 2；

Fig. 4 is the structural representation of cylinder；

Fig. 5 is the structural representation of piston component；

Fig. 6 is Fig. 5 C direction views；

Fig. 7 is E-E sectional views in Fig. 6；

Fig. 8 is Fig. 5 D direction views；

Fig. 9 is F-F sectional views in Fig. 8.

Marked in figure：1st, cylinder；2nd, gas outlet；3rd, suction nozzle；4th, one stage of compression piston；5th, the first air cavity；6th, power cavity； 7th, piston rod；8th, two-stage compression piston；9th, the second air cavity；10th, the second resilient plug；11st, crank connecting link；12nd, the first valve block；13、 Steam vent；14th, the first air admission hole；15th, the second valve block；16th, the second air admission hole；17th, motor；18th, drying chamber；19th, electromagnetic switch Valve；20th, the first resilient plug；21st, charging connector；22nd, exhaust branch.

Embodiment

The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.

As shown in figure 4, the utility model offers in cylinder 1 is sequentially connected the first logical air cavity 5, power cavity 6 and Two air cavitys 9；One stage of compression piston 4 is equipped with first air cavity 5, as shown in Fig. 5, Fig. 6 and Fig. 7, is offered in one stage of compression piston 4 First air admission hole 14 and steam vent 13, the first air admission hole 14 connect the first air cavity 5 and power cavity 6, set on the first air admission hole 14 First valve block 12；Two-stage compression piston 8 is equipped with second air cavity 9, as shown in Figure 8 and Figure 9, the is opened up on two-stage compression piston 8 Two air admission holes 16, the second air admission hole 16 are connected with steam vent 13, and the second valve block 15, the second air cavity are set on the second air admission hole 16 Gas outlet 2 is opened up in 9 side wall, the second resilient plug 10 is installed on gas outlet 2.Such as Fig. 1, as shown in 2 and Fig. 3, gas outlet 2 connects Drying chamber 18, charging connector 21 is set on drying chamber 18, exhaust branch 22 is also connected on charging connector 21, electricity is set on exhaust branch 22 Magnetic switch valve 19.First resilient plug 20 is set on the gas outlet of electromagnetic switch valve 19, and the outlet side connection of the first resilient plug 20 is moved Power chamber 6.

Suction nozzle 3 is set on power cavity 6, piston rod 7 is set in power cavity 6, one end connection one stage of compression of piston rod 7 is lived Plug 4, other end connection two-stage compression piston 8.The crank connecting link 11 of connection actuating unit, crank connecting link are set on piston rod 7 11 connection motors 17.

The course of work of the present utility model is as follows：

When the rigidity of air to be increased paralysis, motor 17 is opened, motor 17 is driven by crank connecting link 11 and piston rod 7 One stage of compression piston 4 and two-stage compression piston 8 move reciprocatingly simultaneously, when one stage of compression piston 4 moves to the direction of power cavity 6 When, under the thrust of air, the first valve block 12 opens, and the gas entered by suction nozzle 3 in power cavity 6 enters the first gas Chamber 5, the first air cavity 5 are in air-suction state；At the same time, two-stage compression piston 8 moves to the direction away from power cavity 6, in sky In the presence of atmidometer, the second valve block 15 is in closure state, and the second air cavity 9 is in compression work state, and the air of compression reaches After to some strength the second resilient plug 10 will be promoted to overcome its elastic force to be moved to the direction away from gas outlet 2, opens gas outlet 2, Compressed gas is discharged into drying chamber 18, passes through the air inlet spring of charging connector 21 after drying.When one stage of compression piston 4 is to remote When direction from power cavity 6 is moved, the first valve block 12 closes in the presence of air drag, with the shifting of one stage of compression piston 4 Dynamic, gradual compressed air enters steam vent 13, after reaching certain pressure, pushes the second valve block 15 open, into the second air cavity 9, During this, the first air cavity 5 is in compression work state, and the second air cavity 9 is in air inlet working condition.And so on enter cylinder 1 air first enters the second air cavity 9 after the compression of one stage of compression piston 4, then is discharged after the compression of two-stage compression piston 8, improves The compressive strength of air, it is possible to increase charging efficiency, and the first air cavity 5 and second air cavity 9 are in the band of same actuating unit Dynamic lower work, reduces energy resource consumption.

During above-mentioned inflation, electromagnetic switch valve 19 is closed.When the flexibility of air spring to be increased, Motor 17 is disconnected, electromagnetic switch valve 19 is connected, makes its opening, in the presence of compressed air, the first resilient plug 20 is opened, connects Exhaust branch 22, the gas of releasing is discharged into power cavity 6, discharged by suction nozzle 3.With the discharge of gas, its pressure by Decrescence small, when being not enough to push open the first resilient plug 20, the first resilient plug 20 recovers closed mode, causes residual gas no longer to arrange Go out, realize that overbottom pressure is protected.

It is described above, only it is preferred embodiment of the present utility model, is not that other forms are made to the utility model Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent The equivalent embodiment of change.But it is every without departing from the content of the technical scheme of the utility model, it is real according to technology of the present utility model Any simple modification, equivalent variations and the remodeling that confrontation above example is made, still fall within the guarantor of technical solutions of the utility model Protect scope.

Claims (8)

1. a kind of secondary compressed air pump, including motor and cylinder, it is characterised in that：Offered in cylinder and be sequentially connected logical One air cavity, power cavity and the second air cavity；

One stage of compression piston is equipped with first air cavity, offers the first air admission hole and steam vent in one stage of compression piston, first enters Stomata connects the first air cavity and power cavity, and the first check valve is set on the first air admission hole；

Two-stage compression piston is equipped with second air cavity, the second air admission hole, the second air admission hole and exhaust are opened up on two-stage compression piston Hole is connected, and the second check valve is set on the second air admission hole, and gas outlet is opened up in the side wall of the second air cavity, and is installed on gas outlet Three check valves, gas outlet connection charging connector；

Suction nozzle is set on power cavity, piston rod is set in power cavity, crank connecting link, crank connecting link connection electricity are set on stopper rod Machine, one end connection one stage of compression piston, the other end connection two-stage compression piston of piston rod.

2. secondary compressed air pump according to claim 1, it is characterised in that：Also connection exhaust on the charging connector Road, electromagnetic switch valve is set on exhaust branch.

3. secondary compressed air pump according to claim 2, it is characterised in that：Overbottom pressure control is also set up on the exhaust branch Valve processed.

4. secondary compressed air pump according to claim 3, it is characterised in that：The outlet side connection of the overbottom pressure control valve Power cavity.

5. secondary compressed air pump according to claim 4, it is characterised in that：The overbottom pressure control valve is the first elasticity Plug.

6. secondary compressed air pump according to any one of claims 1 to 5, it is characterised in that：The gas outlet and charging connector Between add drying chamber.

7. secondary compressed air pump according to claim 6, it is characterised in that：First check valve and the second check valve It is valve block.

8. secondary compressed air pump according to claim 7, it is characterised in that：3rd check valve is the second elasticity Plug.