Integrated gas supply device

Abstract

The utility model discloses an integrated air supply device which comprises an air compression unit, the air compression unit comprises a motor and two sets of air compressors respectively installed on the two sides of the motor, and output shafts at the two ends of the motor are in transmission connection with the air compressors so that the air compressors can operate to compress air. The integrated air supply device further comprises an electromagnetic valve set, the electromagnetic valve set is arranged in a valve block connected with the air compression unit, an air channel is arranged in the valve block and used for forming an air path, and air compressed by the air compressor is distributed by the electromagnetic valve set through the air channel. The device is good in dynamic performance, high in integration degree and suitable for the field of air suspension systems.

Description

Technical Field

[0001] The utility model relates to the technical field of air compression devices, and particularly relates to an integrated air supply device. Background Art

[0002] The air suspension system can control the air compressor and the exhaust valve according to different road conditions and the signals of the distance sensors, so that the spring can be automatically compressed or extended, thereby reducing or increasing the ground clearance of the chassis to improve the stability of the vehicle body at high speeds or the passability on complex road conditions. As the core component of the air suspension system, the air supply device can compress air and inflate it into the air spring. The existing air supply devices mainly include an air compressor, valves, an air dryer, an electronic control board, and a motor. Usually, the following defects exist:

[0003] (1) For the valve-pump integrated machine of the air supply device used in the air suspension system on the market, most of the air compression components are arranged on one side of the motor (see Patent CN106232398A), resulting in poor dynamic performance. On the one hand, the movement directions of the two groups of pistons of such a compressor are the same, and the inertial forces are superimposed on each other, which will generate large vibrations and noises. On the other hand, its single-sided distribution method may cause the counterweights on the rotor to shift due to long-term operation or accidental impact, resulting in uneven load distribution on the rotor during high-speed rotation, thereby reducing the service life of the machine. Although the existing air compressors with double cylinders distributed on both sides of the motor can improve the dynamic performance of the compressor, most of them do not integrate components such as valve groups and cannot be applied to the field of air suspension systems.

[0004] (2) In addition, the various components of the existing air supply devices are mostly connected in an independent manner, resulting in low installation efficiency, low integration degree, unreasonable space utilization of the air supply device, and inability to meet the requirements of lightweight.

[0005] Therefore, the utility model aims to provide an air supply device with good dynamic performance and high integration degree. Summary of the Utility Model

[0006] For this reason, the utility model provides an integrated air supply device to solve the above-mentioned defects in the prior art.

[0007] An integrated air supply device includes an air compression unit. The air compression unit includes two groups of air compressors with motors respectively installed on both sides of the motor. The output shafts at both ends of the motor are in transmission connection with the air compressors to make the air compressors operate to compress air. It further includes a solenoid valve group, and the solenoid valve group is arranged in a valve block connected to the air compression unit. The valve block has a gas passage for forming a gas circuit, and the air compressed by the air compressor is distributed by the solenoid valve group through the gas passage.

[0008] Preferably, the valve block and the solenoid valve group inside it are arranged between the two air compressors and on the side of the motor.

[0009] Preferably, it further includes an electronic control unit. The motor and the solenoid valve group are electrically connected to the electronic control unit, and the electronic control unit is installed on the same side as the motor and the valve block.

[0010] Preferably, it further includes an air dryer. The air dryer is constructed on the valve block. The compressed air outlet passage of the air compressor is communicated with the inlet of the air dryer through the gas passage, and the outlet of the air dryer is communicated with the solenoid valve group in the valve block through the gas passage.

[0011] Preferably, it further includes an air inlet arranged on the valve block and communicated with the air circuit of the air compressor. The valve block is installed on the motor, and the air holes on the motor housing are communicated with the gas passage on the valve block, and the air inlet can be communicated with the air holes through the gas passage.

[0012] Preferably, the air compressor is a single-cylinder piston air compressor, which includes a crankcase connected to the motor housing and a crank connecting rod assembly arranged inside the crankcase to drive the piston to reciprocate along the piston chamber to compress the gas. The rotor assembly of the motor is sleeved in the housing, and the output shafts at both ends of the rotor assembly are connected to the crank connecting rod assembly located in the crankcase.

[0013] Preferably, an air passage connection surface F is constructed inside the piston cylinder above the crankcase of the air compressor. The outlet of the compressed air outlet passage of the air compressor is constructed on the air passage connection surface F. The two sides of the bottom of the valve block are sealed and installed on the air passage connection surface F so that the outlet passage of the air compressor is communicated with the gas passage of the valve block.

[0014] Preferably, the number of drying tanks of the air dryer is two. The two drying tanks are integrally distributed on both sides of the valve block and symmetrically distributed above the corresponding air compressor on each side.

[0015] Preferably, the valve block is further provided with a first tracheal joint connected to the air storage tank, an exhaust port, and several second tracheal joints connected to the corresponding air springs. The gas passage includes:

[0016] Air passage one, whose two ends are respectively connected to the inlet end of the first tracheal joint and the intake side of the air compressor, and a first solenoid valve is arranged on the air passage one;

[0017] Air passage two, whose two ends are respectively connected to the inlet end of the first tracheal joint and the outlet end of the air dryer, and a second solenoid valve is arranged on the air passage two;

[0018] An air passage four, one end of which is connected to the air outlet of the air dryer, and the other end of the air passage four is connected to the corresponding air pipe joint two through a plurality of air passages five, and each of the air passages five is provided with a solenoid valve four, and the air passage four is provided with a solenoid valve three;

[0019] Air passage three, two ends of which are respectively connected to the air inlet side of the air compressor and the solenoid valve three, and the solenoid valve three is a two-position three-way solenoid valve;

[0020] An exhaust gas circuit, one end of which is connected to the exhaust port, and the other end of which is connected to the gas circuit between the air compressor and the air dryer, wherein a solenoid valve 5 is provided on the exhaust gas circuit;

[0021] The two ends of the air intake path are respectively connected to the atmosphere and the air intake side of the air compressor.

[0022] Preferably, a safety valve is connected between the air inlet circuit and the air outlet of the air compressor via an air passage, and the safety valve is arranged in the valve block.

[0023] The utility model has the following advantages:

[0024] (1) On the one hand, the air supply device of the utility model distributes the two cylinders symmetrically on both sides of the motor, which effectively improves the dynamic performance of the air supply device. Since the pistons on both sides run in opposite directions, the inertial forces cancel each other out, and the vibration is reduced during the air compression process, thereby improving the operation stability and effectively reducing the noise, thereby extending the service life of the machine. On the other hand, the valve pump is integrated with the drying tank and other components, so that the compressor with two cylinders symmetrically distributed on both ends of the motor can be applied to the field of air suspension systems, thereby improving the energy efficiency ratio of air compression, enabling the machine to convert energy more efficiently during operation, reducing energy waste, and improving overall work efficiency.

[0025] (2) The utility model arranges the solenoid valve group between two symmetrically distributed air compressors and installs it above the motor housing. On the one hand, due to the close cooperation between the various mechanisms and the compact layout, the integration of the device is improved; on the other hand, during the installation of the solenoid valve group on the motor, the air outlet of the air compressor and the gas channel in the valve block are sealed and connected simultaneously, and the electronic control unit is connected to the motor and the solenoid valve group in a nearby manner, which can simplify the layout of the gas pipeline and the circuit, is conducive to the lightweight demand of the device, and is also more conducive to assembly and subsequent operation and maintenance;

[0026] (3) The air inlet of the utility model is arranged on the solenoid valve group, and the solenoid valve group and the motor are gas-connected. The air entering through the air inlet can enter the motor casing through the air holes, taking away part of the heat generated during the operation of the motor, thereby reducing the working temperature of the motor and improving the operating efficiency of the device. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0028] Figure 2 is a rear perspective view of the present utility model;

[0029] Figure 3 is a schematic diagram of the structure of the valve block integrating the solenoid valve group and the air dryer of the present utility model;

[0030] Figure 4 is a schematic diagram of the installation structure of the air compressor, motor and electronic control unit of the present utility model;

[0031] Figure 5 is a schematic top view structure of the present utility model;

[0032] Figure 6 of the present utility model Figure 5 is a schematic cross-sectional structure diagram of B-B' in;

[0033] Figure 7 of the present utility model Figure 6 is an enlarged schematic structure diagram of part A in;

[0034] Figure 8 of the present utility model Figure 5 is a schematic cross-sectional structure diagram of C-C' in;

[0035] Figure 9 is a schematic connection structure diagram of the gas channel and the solenoid valve group in the valve block of the present utility model.

[0036] In the figure:

[0037] 1 - motor; 2 - electronic control unit; 3 - solenoid valve group; 4 - air dryer; 5 - air compressor; 6 - valve block; 10 - gas storage tank; 20 - air spring;

[0038] 101 - housing; 102 - rotor assembly; 103 - air hole;

[0039] 401 - drying tank;

[0040] 501 - crankcase; 502 - piston; 503 - piston cavity; 504 - crank connecting rod assembly; 505 - air outlet channel; 506 - piston cylinder; F - air passage connection surface; 507 - exhaust hole; 508 - exhaust cavity; 509 - one-way exhaust valve group; 510 - intake hole; 511 - one-way intake valve group;

[0041] 601 - Intake port; 602 - First tracheal joint; 603 - Exhaust port; 604 - Second tracheal joint; 605 - First air passage; 606 - Second air passage; 607 - Third air passage; 608 - Fourth air passage; 609 - Fifth air passage; 610 - Pressure sensor; 611 - First solenoid valve; 612 - Second solenoid valve; 613 - Third solenoid valve; 614 - Fourth solenoid valve; 615 - Exhaust gas circuit; 616 - Fifth solenoid valve; 617 - Intake gas circuit; 618 - Safety valve; 619 - Second one - way intake valve; S1 - First mounting surface; S2 - Second mounting surface; S3 - Third mounting surface; S4 - Fourth mounting surface; Detailed implementation mode

[0042] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific implementation modes.

[0043] As Figures 1 to 9 shown, the present utility model provides an integrated air supply device, which is mainly applicable but not limited to the field of air suspension systems. It includes an air compression unit, and the air compression unit includes a motor 1 and two groups of air compressors 5 respectively installed on both sides of the motor 1. The output shafts at both ends of the motor 1 are in transmission connection with the air compressors 5 to make the air compressors 5 operate to compress air.

[0044] The integrated air supply device further includes a solenoid valve group 3, and the solenoid valve group 3 is arranged in a valve block 6 connected to the air compression unit. The valve block 6 has a gas passage for forming an air circuit, and the air compressed by the air compressor 5 is distributed by the solenoid valve group 3 through the gas passage.

[0045] In a preferred embodiment of the present utility model, the valve block 6 and the solenoid valve group 3 inside it are arranged between the two air compressors 5 and on one side of the motor 1. This layout method can effectively utilize the space between the air compressors 5 and reduce the volume of the air supply device.

[0046] In another embodiment of the present utility model, the integrated air supply device further includes an electronic control unit 2. The motor 1 and the solenoid valve group 3 are electrically connected to the electronic control unit 2, and the electronic control unit 2 is installed on the same side of the motor 1 and the valve block 6 in a way that saves wiring. The layout of the circuit can be reduced. As shown in the attached drawings, the electronic control unit 2 is installed on the first mounting surface S1 of the valve block 6. Of course, the electronic control unit 2 can also be installed at other positions according to actual production requirements.

[0047] In another embodiment of the present utility model, the integrated air supply device further includes an air dryer 4 which is connected to the valve block 6 through an air circuit. In the embodiment of the present utility model, the air dryer 4 is constructed on the valve block 6. Preferably, the air dryer 4 is integrally distributed on the valve block 6, which can improve the assembly efficiency and airtightness of the device and reduce the production cost.

[0048] The compressed air outlet passage 505 of the air compressor 5 is communicated with the inlet of the air dryer 4 through the gas passage, and the outlet of the air dryer 4 is communicated with the solenoid valve group 3 in the valve block 6 through the gas passage.

[0049] Specifically, as shown in the drawings, the air dryer 4 is arranged on one side of the second mounting surface S2 of the valve block 6. The second mounting surface S2 is constructed on the side of the valve block 6 away from the motor 1. The air dryer 4 may have one or more drying tanks 401, and the inside of the drying tank 401 is filled with drying molecular sieves. Preferably:

[0050] The number of the drying tanks 401 of the air dryer 4 is two. The two drying tanks 401 are integrally distributed on both sides of the valve block 6, and the two drying tanks 401 are symmetrically distributed above the corresponding air compressor 5 on each side. This setting method can make the air supply device maintain a square shape and improve the intensification degree.

[0051] Furthermore, in the embodiment of the present utility model, the air compressor 5 is a single-cylinder piston type air compressor, which includes a crankcase 501 hermetically connected to the housing 101 of the motor 1 and a crank connecting rod assembly 504 arranged inside the crankcase 501 to drive the piston 502 to reciprocate along the piston chamber 503 to compress gas. The rotor assembly 102 of the motor 1 is sleeved in the housing 101, and the output shafts at both ends of the rotor assembly 102 are connected to the crank connecting rod assembly 504 located in the crankcase 501.

[0052] In order to improve the gas compression stability, the piston chamber 503 is connected to an exhaust chamber 508 through an exhaust hole 507. The exhaust chamber 508 is communicated with the outlet passage 505. A one-way exhaust valve group 509 is installed at the exhaust hole 507, and the one-way exhaust valve 509 group is used to control the one-way exhaust of the piston chamber 503 to the exhaust chamber 508. An intake hole 510 and a one-way intake valve group 511 are arranged on the piston 502, and the one-way intake valve group 511 is used to control the one-way intake of the intake hole 510 from the crankcase 501 into the piston chamber 503. The one-way exhaust valve group 509 and the one-way intake valve group 511 here are preferably valve plates.

[0053] When the air compression unit is working, the crank - connecting rod assembly 504 is driven by the motor 1 to operate, thereby driving the piston 502 to reciprocate along the piston chamber 503. When the space in the piston chamber 503 increases, the one - way intake valve group 511 opens, and the air entering from the intake port 601 passes through the crankcase 501 and enters the piston chamber 503 through the intake hole 510. At this time, the one - way exhaust valve 509 is closed; when the space in the piston chamber 503 decreases, the one - way intake valve group 511 closes, and the compressed air in the piston chamber 503 enters the exhaust chamber 508 through the exhaust hole 507 by opening the one - way exhaust valve 509. Finally, the compressed air flows into the gas passage of the valve block 6 from the outlet passage 505 part.

[0054] When the air compressor 5 is working, when the connecting rod of the left - hand crank - connecting rod assembly 504 is at the highest point, the left - hand piston chamber 503 is in the compressed - air state. At this time, the connecting rod of the right - hand crank - connecting rod assembly 504 is at the lowest point, and the right - hand piston chamber 503 is in the air - intake state. As the motor 1 runs, the air - intake and compressed - air states of the left - and right - hand piston chambers 503 are swapped, and this cycle repeats. The twin - cylinder air compressor has obvious advantages in providing stable operation, reducing noise, and adapting to large - displacement applications.

[0055] Moreover, as shown in the figure, in the embodiment of the present utility model, the motor 1 is installed on the third mounting surface S3 of the valve block 6. The air hole 103 on the motor housing 101 is in communication with the gas passage on the third mounting surface S3 of the valve block 6. The valve block 6 is provided with an intake port 601 that is in communication with the air - circuit of the air compressor 5. The intake port 601 can be in communication with the air hole 103 through the gas passage. The advantage of this setting is that: as Figure 6 shown, the thick line in the figure shows the flow direction of the intake air θ. The air entering from the intake port 601 can enter the motor housing 101 of the motor 1 through the air hole 103, taking away part of the heat generated during the operation of the motor 1, thereby reducing the working temperature of the motor 1.

[0056] In the embodiment of the present utility model, an air - passage connecting surface F is constructed inside the piston cylinder 506 above the crankcase 501. The outlet of the compressed - air outlet passage 505 of the air compressor 5 is constructed on the air - passage connecting surface F. The bottom sides of the valve block 6 are sealed and installed on the air - passage connecting surface F so that the outlet passage 505 of the air compressor 5 is in communication with the gas passage of the valve block 6. Sealing rings can be provided at the sealing end - face part of the two to improve the sealing performance. This construction method can save additional external air - circuits. While completing the installation of the motor 1 and the valve block 6, the gas passage of the valve block 6 is in sealed communication with the outlet passage 505 of the air compressor 5, simplifying the air - circuit and meeting the requirements of the integration of in - vehicle air compressors.

[0057] In the embodiment of the present utility model as shown in the attached drawings, the air inlet 601 is arranged on the fourth mounting surface S4 of the valve block 6. The fourth mounting surface S4 faces the first mounting surface S1. On the fourth mounting surface S4 of the valve block 6, there is also an air pipe joint one 602 connected to the air storage tank 10, an exhaust port 603, and several air pipe joints two 604 connected to the corresponding air springs 20.

[0058] The gas channels on the valve block 6 include:

[0059] Airway one 605, whose two ends are respectively connected to the inlet end of the air pipe joint one 602 and the intake side of the air compressor 5. An electromagnetic valve one 611 is arranged on the airway one 605;

[0060] Airway two 606, whose two ends are respectively connected to the inlet end of the air pipe joint one 602 and the outlet end of the air dryer 4. An electromagnetic valve two 612 is arranged on the airway two 606;

[0061] Airway four 608, one end of which is connected to the outlet end of the air dryer 4, and the other end of the airway four 608 is connected to the corresponding air pipe joint two 604 through several airways five 609. Electromagnetic valves four 614 are arranged on the airways five 609, and an electromagnetic valve three 613 is arranged on the airway four 608;

[0062] Airway three 607, whose two ends are respectively connected to the intake side of the air compressor 5 and the electromagnetic valve three 613. The electromagnetic valve three 613 is a two-position three-way electromagnetic valve;

[0063] Exhaust gas path 615, one end of which is connected to the exhaust port 603, and the other end is connected to the gas path between the air compressor 5 and the air dryer 4. An electromagnetic valve five 616 is arranged on the exhaust gas path 615;

[0064] Intake gas path 617, whose two ends are respectively connected to the intake side of the air compressor 5 and the air inlet 601. A safety valve 618 is connected between the intake gas path 617 and the outlet end of the air compressor 5 through an airway. The safety valve 618 is arranged in the valve block 6.

[0065] A one-way intake valve two 619 is arranged on the intake gas path 617 to prevent the gas entering the gas path from flowing back out from the air inlet 601.

[0066] A pressure sensor 610 is arranged on the gas channel in the valve block 6. The pressure sensor 610 is used to detect the pressure of the gas path.

[0067] The working principle of the gas path is as Figure 9 shown:

[0068] I. When inflating the air spring 20:

[0069] When supplying air to the air spring 20 through the atmosphere: The corresponding solenoid valve four 614 can be opened, the air passage four 608 is connected through the solenoid valve three 613, and the other solenoid valves are closed. At this time, the outside air enters the intake air passage 617 of the valve block 6 through the intake port 601, is compressed by the air compressor 5, enters the air dryer 4 for drying, and the dried air can enter the corresponding air spring 20 through the air passage four 608 to adjust the vehicle body height;

[0070] When supplying air to the air spring 20 through the air storage tank 10: The solenoid valve one 611 and the corresponding solenoid valve four 614 can be opened, the air passage three 607 is connected to the air passage of the air spring 20 through the solenoid valve three 613, and the other solenoid valves are closed. At this time, the air stored in the air storage tank 10 can inflate the air spring 20 through the air passage one 605 and the air passage three 607;

[0071] II. When storing air in the air storage tank 10:

[0072] When storing air in the air storage tank 10 through the air spring 20: The solenoid valve two 612 and the corresponding solenoid valve four 614 are opened, the air spring 20 is connected to the intake end of the air compressor 5 through the solenoid valve three 613, and the other solenoid valves are closed. The gas in the air spring 20 is compressed by the air compressor 5 and enters the air dryer 4 for drying, and the dried air can enter the air storage tank 10 through the opened solenoid valve two 612;

[0073] When storing air in the air storage tank 10 through the atmosphere: The solenoid valve two 612 is opened, the intake end of the air compressor 5 is disconnected from the air spring 20 through the solenoid valve three 613, and the other solenoid valves are closed. At this time, the outside air enters the intake air passage 617 of the valve block 6 through the intake port 601, is compressed by the air compressor 5 and enters the air dryer 4 for drying, and the dried air can be stored in the air storage tank 10 through the opened solenoid valve two 612.

[0074] III. When the air dryer 4 is backflushed and dried:

[0075] The solenoid valve five 616 and the solenoid valve four 614 are opened, the air spring 20 is connected to the exhaust end of the air dryer 4 through the solenoid valve three 613, and the other solenoid valves are closed. The air in the air spring 20 passes through the air dryer 4 in the reverse direction and is discharged through the opened solenoid valve five 616. The moisture adsorbed by the desiccant in the air dryer 4 is dried by the dry air discharged from the air spring 20, and the regeneration of the desiccant in the air dryer 4 can be effectively carried out.

[0076] IV. When the air spring 20 rapidly exhausts air:

[0077] Open solenoid valve five 616, switch the air spring 20 to be connected to the air intake end of the air compressor 5 through solenoid valve three 613, and close the remaining solenoid valves. The gas in the air spring 20 is compressed by the air compressor 5 and then discharged into the atmosphere from the opened solenoid valve five 616.

[0078] Figure 9 Only one gas circuit connection relationship is shown. The gas circuit connection mode of the gas channel in the valve block 6 of the utility model and the solenoid valve control mode are only exemplary and can be flexibly adjusted according to needs.

[0079] In summary, the air supply device of the utility model, on the one hand, symmetrically distributes the double cylinders on both sides of the motor, which effectively improves the dynamic performance of the air supply device. Since the pistons on both sides run in opposite directions, the inertial forces cancel each other out, and the vibration is reduced during the air compression process, which improves the operation stability and effectively reduces the noise, thereby extending the service life of the machine. On the other hand, the valve pump is integrated and the distribution method of the components such as the drying tank is integrated, so that the compressor with the double cylinders symmetrically distributed on both ends of the motor can be applied to the field of air suspension systems, which improves the energy efficiency ratio of air compression, enables the machine to convert energy more efficiently during operation, reduces energy waste, and improves overall work efficiency.

[0080] In addition, the utility model arranges the solenoid valve group 3 between two symmetrically distributed air compressors 5 and installs it above the casing 101 of the motor 1. On the one hand, due to the close cooperation between the various mechanisms and the compact layout, the integration of the device is improved; on the other hand, during the installation of the solenoid valve group 3 on the motor 1, the sealed connection between the air outlet end of the air compressor 5 and the gas channel in the valve block 6 is synchronously realized, and the electronic control unit 2 is connected to the motor 1 and the solenoid valve group 3 side in a nearby manner, which can simplify the layout of the gas pipeline and the circuit, is beneficial to the lightweight requirements of the device, and is also more conducive to assembly and subsequent operation and maintenance; the air inlet 601 is arranged on the solenoid valve group 3, and the solenoid valve group 3 and the motor 1 are gas-connected. The air entering the air inlet 601 can enter the casing 101 of the motor 1 through the air hole 103, and take away part of the heat generated during the operation of the motor 1, thereby reducing the working temperature of the motor 1 and improving the operation efficiency of the device.

[0081] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An integrated air supply device, comprising an air compression unit, the air compression unit comprising a motor (1) and two groups of air compressors (5) respectively installed on both sides of the motor (1), the output shafts at both ends of the motor (1) being drivingly connected to the air compressors (5) so that the air compressors (5) operate to compress air, characterized in that: It also comprises a solenoid valve group (3), wherein the solenoid valve group (3) is arranged in a valve block (6) connected to the air compression unit, wherein the valve block (6) has a gas channel for forming a gas path, and the air compressed by the air compressor (5) is distributed by the solenoid valve group (3) via the gas channel.

2. An integrated gas supply device according to claim 1, characterized in that: The valve block (6) and the electromagnetic valve group (3) therein are arranged between the two air compressors (5) and located on one side of the motor (1).

3. An integrated gas supply device according to claim 2, characterized in that: It also comprises an electronic control unit (2), the motor (1) and the solenoid valve group (3) are electrically connected to the electronic control unit (2), and the electronic control unit (2) is installed on the same side of the motor (1) and the valve block (6).

4. The integrated gas supply device according to claim 2, characterized in that: It also includes an air dryer (4), which is constructed on the valve block (6); the compressed air outlet channel (505) of the air compressor (5) is connected to the inlet of the air dryer (4) through the gas channel; the outlet of the air dryer (4) is connected to the solenoid valve group (3) in the valve block (6) through the gas channel.

5. The integrated gas supply device according to claim 1, characterized in that: It also includes an air inlet (601) arranged on the valve block (6) and connected to the air path of the air compressor (5); the valve block (6) is mounted on the motor (1); the air hole (103) on the housing (101) of the motor (1) and the air channel on the valve block (6) are connected to each other; the air inlet (601) can be connected to the air hole (103) through the gas channel.

6. The integrated gas supply device according to claim 1, characterized in that: The air compressor (5) is a single-cylinder piston air compressor, comprising a crankcase (501) connected to a housing (101) of a motor (1), and a crank-connecting rod assembly (504) arranged inside the crankcase (501) and driving a piston (502) to reciprocate along a piston chamber (503) to compress gas. The rotor assembly (102) of the motor (1) is mounted in the housing (101), and the output shafts at both ends of the rotor assembly (102) are connected to the crank-connecting rod assembly (504) located in the crankcase (501).

7. The integrated gas supply device according to claim 1, characterized in that: An air outlet connection surface F is constructed on the inner side of the piston cylinder (506) above the crankcase (501) of the air compressor (5); an air outlet of the compressed air outlet channel (505) of the air compressor (5) is constructed on the air outlet connection surface F; and both sides of the bottom of the valve block (6) are sealed and mounted on the air outlet connection surface F so that the air outlet channel (505) of the air compressor (5) and the gas channel of the valve block (6) are connected to each other.

8. The integrated gas supply device according to claim 4, characterized in that: The number of drying tanks (401) of the air dryer (4) is two, the two drying tanks (401) are integrated and distributed on both sides of the valve block (6), and the two drying tanks (401) are symmetrically distributed above the air compressor (5) on the corresponding side.

9. The integrated gas supply device according to claim 4, characterized in that: The valve block (6) is also provided with a first air pipe joint (602) connected to the air storage tank (10), an exhaust port (603) and a plurality of second air pipe joints (604) connected to corresponding air springs (20). The air passage comprises: An air passage 1 (605), the two ends of which are respectively connected to the air inlet end of the air pipe connector 1 (602) and the air inlet side of the air compressor (5), and an electromagnetic valve 1 (611) is provided on the air passage 1 (605); Air duct 2 (606), two ends of which are respectively connected to the air inlet end of the air pipe connector 1 (602) and the air outlet end of the air dryer (4), and the air duct 2 (606) is provided with a solenoid valve 2 (612); An air channel four (608), one end of which is connected to the air outlet end of the air dryer (4), and the other end of the air channel four (608) is connected to the corresponding air pipe joint two (604) through a plurality of air channels five (609), and each of the air channels five (609) is provided with a solenoid valve four (614), and the air channel four (608) is provided with a solenoid valve three (613); Air passage three (607), two ends of which are respectively connected to the air inlet side of the air compressor (5) and the solenoid valve three (613), and the solenoid valve three (613) is a two-position three-way solenoid valve; an exhaust gas circuit (615), one end of which is connected to the exhaust port (603), and the other end of which is connected to the gas circuit between the air compressor (5) and the air dryer (4); a solenoid valve 5 (616) is provided on the exhaust gas circuit (615); The air intake path (617) has two ends connected to the atmosphere and the air intake side of the air compressor (5) respectively.

10. The integrated gas supply device according to claim 9, characterized in that: A safety valve (618) is connected between the air inlet path (617) and the air outlet end of the air compressor (5) via an air passage, and the safety valve (618) is arranged in the valve block (6).

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