阅读说明：本技术 一种内循环空气泵 (Internal circulation air pump ) 是由 周全才 张文强 刘滔 周全武 于 2020-07-10 设计创作，主要内容包括：本发明公开了一种内循环空气泵,包括进气口和出气口,还包括增压仓所述增压仓与所述出气口连通；所述进气口上连通有储气罐总成,所述储气罐总成和所述出气口均与空气弹簧连通；存储在储气罐总成内的气体,通过进气口进入增压仓,增压仓将气体加压后从出气口输送至空气弹簧中,空气弹簧与储气罐总成连通,通过电磁阀的控制,可以实现,该系统中的气体在封闭环境中循环,从而避免了从外部吸收空气产生的一些问题。(The invention discloses an internal circulation air pump, which comprises an air inlet, an air outlet and a pressurizing bin, wherein the pressurizing bin is communicated with the air outlet; the air inlet is communicated with an air storage tank assembly, and the air storage tank assembly and the air outlet are both communicated with an air spring; the air stored in the air storage tank assembly enters the pressurization bin through the air inlet, the pressurization bin conveys the air to the air spring from the air outlet after pressurizing the air, the air spring is communicated with the air storage tank assembly, and the circulation of the air in the system in a closed environment can be realized through the control of the electromagnetic valve, so that some problems caused by the fact that the air is absorbed from the outside are avoided.)

1. An internal circulation air pump comprises an air inlet, an air outlet and a pressurizing bin, wherein the pressurizing bin is communicated with the air outlet; the air inlet is communicated with an air storage tank assembly, and the air storage tank assembly and the air outlet are communicated with an air spring.

2. The internal circulation air pump of claim 1 wherein an air intake chamber is disposed between the air intake port and the plenum chamber, a one-way valve is disposed between the air intake chamber and the plenum chamber, and the air intake port is in communication with the air intake chamber.

3. The internal circulation air pump of claim 2 wherein the inlet chamber has a cam and a piston rod hinged to the cam at one end, the piston rod pressurizes the interior of the pressurizing chamber, and the cam is driven by a drive motor.

4. The internal circulation air pump of claim 3 wherein the piston rod is provided with an air flow passage communicating the inlet chamber and the pressurizing chamber, and the end of the air flow passage located in the pressurizing chamber is provided with a spring.

5. The internal circulation air pump of claim 1 wherein a drying cylinder is disposed between the plenum and the air outlet.

6. The internal circulation air pump of claim 5 wherein a pressure limiting valve is further provided between the dryer cartridge and the air outlet.

7. The internal circulation air pump as claimed in claim 6 wherein a one-way valve is provided between the drying cylinder and the plenum chamber.

8. The internal circulation air pump of claim 1 further comprising a solenoid valve, wherein the air reservoir assembly, the air outlet, the air inlet and the air spring are all in communication with the solenoid valve via a conduit.

9. The internal circulation air pump of claim 8 wherein a three-way check valve is disposed between the solenoid valve and the air inlet, two ports of the three-way check valve are connected to the solenoid valve and the air inlet respectively, and the other port is provided with a filter and is in communication with the atmosphere.

10. An internal circulation air pump according to claim 8 wherein four air springs are connected to the solenoid valve.

Technical Field

The invention relates to the field of air pumps of automobile suspension systems, in particular to an internal circulation air pump.

Background

The air pump is mainly used in an air suspension system of a vehicle, the external circulation air pump is mainly used in a commercial vehicle and charges air from the atmosphere, and system faults are easily caused due to salt mist, moisture, dust and the like contained in the atmosphere.

Disclosure of Invention

In order to solve the problems, the invention provides an internal circulation air pump which has the advantage of difficult damage.

The technical scheme of the invention is as follows:

an internal circulation air pump comprises an air inlet, an air outlet and a pressurizing bin, wherein the pressurizing bin is communicated with the air outlet; the air inlet is communicated with an air storage tank assembly, and the air storage tank assembly and the air outlet are communicated with an air spring.

The working principle of the technical scheme is as follows:

the air stored in the air storage tank assembly enters the pressurization bin through the air inlet, the pressurization bin conveys the air into the air spring from the air outlet after pressurizing the air, the air spring is communicated with the air storage tank assembly, and the circulation of the air in the system in a closed environment can be realized through the control of the electromagnetic valve, so that the problems (such as salt mist, moisture, dust and the like contained in the atmosphere and damage to the air pump) caused by the fact that the air is absorbed from the outside are avoided.

In a further technical scheme, a cam and a piston rod with one end hinged to the cam are arranged in the air inlet bin, the piston rod is used for pressurizing the interior of the pressurizing bin, and the cam is driven by a driving motor.

In a further technical scheme, an air inlet bin is arranged between the air inlet and the pressurizing bin, a one-way valve is arranged between the air inlet bin and the pressurizing bin, and the air inlet is communicated with the air inlet bin.

In a further technical scheme, an air flow channel which is communicated with the air inlet bin and the pressurizing bin is arranged on the piston rod, and the one-way valve is an elastic sheet which is arranged at the end part of the air flow channel close to one end of the pressurizing bin.

In a further technical scheme, a drying cylinder is further arranged between the pressurizing bin and the air outlet.

In a further technical scheme, a pressure limiting valve is further arranged between the drying cylinder and the air outlet.

In a further technical scheme, a one-way valve is arranged between the drying cylinder and the pressurizing bin.

In a further technical scheme, the internal circulation air pump further comprises an electromagnetic valve, and the air storage tank assembly, the air outlet, the air inlet and the air spring are communicated with the electromagnetic valve through pipelines.

In a further technical scheme, a three-way one-way valve is arranged between the electromagnetic valve and the air inlet, two ports of the three-way one-way valve are respectively connected with the electromagnetic valve and the air inlet, and a filter is arranged on the other port and is communicated with the atmosphere.

In a further technical scheme, four air springs are connected to the electromagnetic valve.

The invention has the beneficial effects that:

1. the air stored in the air storage tank assembly enters the pressurization bin through the air inlet, the pressurization bin conveys the air into the air spring from the air outlet after pressurizing the air, the air spring is communicated with the air storage tank assembly, and the air in the system can circulate in a closed environment through the control of the electromagnetic valve, so that some problems (such as salt mist, moisture, dust and the like contained in the air and damage to the air pump) caused by the fact that the air is absorbed from the outside are avoided;

2. the pressurizing bin and the air inlet bin are separated through the one-way valve, so that the air flow direction is from the air inlet bin to the pressurizing bin;

3. the piston rod is utilized to increase the air pressure of the pressurizing bin, and the driving motor is utilized to drive the cam piston rod, so that the whole size of the air pump is in a relatively small state;

4. the one-way valve is formed by utilizing the gas pressure difference and the elasticity of the elastic sheet, and electric control is not needed;

5. free control between the air suspension and the internal circulation air pump can be realized by using the control of the electromagnetic valve and an ECU (air suspension system controller);

6. one port of the three-way one-way valve is communicated with the atmosphere, and when the air pressure in the internal circulation air pump is insufficient, the atmosphere can be used for supplementing air into the system.

Drawings

FIG. 1 is a schematic diagram of an internal circulation air pump according to an embodiment of the present invention;

FIG. 2 is a schematic view of the piping connection of an internal circulation air pump according to an embodiment of the present invention;

fig. 3 is a schematic diagram of the air path connection of an internal circulation air pump according to an embodiment of the present invention.

Description of reference numerals:

1. an air inlet; 2. a cam; 3. a rear end cap; 4. a rotating shaft; 5. a piston rod; 6. a piston cylinder; 7. a spring plate; 8. a pressurizing bin; 9. a drying cylinder; 10. a pressure limiting valve; 11. an air outlet; 12. a drive motor; 13. an electromagnetic valve; 14. an atmospheric line; 15. a three-way check valve; 16. a gas reservoir assembly; 17. a filter; 18. an air spring; 19. an air pump body; 20. adding an air nozzle; 21. an air entrainment tank assembly.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings.