High-pressure air supply device

Abstract

The utility model relates to the technical field of air compression, in particular to a high-pressure air supply device. The engine comprises a power end assembly and cylinder body assemblies, the power end assembly is in butt joint with at least one group of cylinder body assemblies, the power end assembly comprises a power shell, a crankshaft and a connecting rod, each cylinder body assembly comprises a cylinder sleeve and a piston body, the power shell is in butt joint with the cylinder sleeve, the crankshaft is movably connected in the power shell and forms a lubricating oil storage area, and the piston body is connected to the crankshaft through the connecting rod. The piston body is movably connected into the cylinder sleeve, a lubricating oil channel is formed in the power shell and communicated with the lubricating oil storage area, and lubricating oil in the lubricating oil storage area lubricates the cylinder sleeve and the piston body in a splashing mode when the crankshaft rotates. The gas production and supply module is pressurized through the multi-stage cylinder assembly, and has the advantages and characteristics of large pressure and small size. Meanwhile, a lubricating oil storage area is formed in the device, lubricating oil is smeared into the cylinder sleeve in a splashing and oil scraping mode, the performance is effectively improved, and the service life is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air compression, in particular to a high-pressure air supply device. Background Art

[0002] Although the previous high-pressure air supply equipment can also meet the high-pressure requirements, its application scope is often limited due to its large size. And those small-volume air supply equipment are eliminated because they cannot meet the high-pressure requirements. For high-pressure air supply equipment, the operation of squeezing gas is carried out through the movement between the piston and the cylinder. The lubrication inside the cylinder is very important for the operation of the equipment. If the lubrication is not in place, it is easy to cause the cylinder to pull, affecting the performance and service life of the whole machine. Therefore, how to ensure the storage of lubricating oil inside the equipment and fully apply it to the inner wall of the cylinder has become a problem that needs attention. Utility Model Content

[0003] The utility model provides a high-pressure air supply device, which aims to solve the problem of high-pressure air supply and internal lubrication of small-volume air supply equipment.

[0004] The utility model provides a high-pressure air supply device, comprising a power end assembly and a cylinder assembly, wherein the power end assembly is docked with at least one group of cylinder assemblies, the power end assembly comprises a power housing, a crankshaft, and a connecting rod, the cylinder assembly comprises a cylinder liner and a piston body, the power housing is docked with the cylinder liner, the crankshaft is movably connected in the power housing and forms a lubricating oil storage area, the piston body is connected to the crankshaft through a connecting rod, the piston body is movably connected in the cylinder liner, a lubricating oil channel is provided on the power housing, the lubricating oil channel is connected to the lubricating oil storage area, and when the crankshaft rotates, the lubricating oil in the lubricating oil storage area lubricates the cylinder liner and the piston body in the form of splashing.

[0005] As a further improvement of the utility model, the lubricating oil channel includes a lubricating oil one-way inlet and a central pipeline. The power housing is provided with a lubricating oil one-way inlet. One end of the central pipeline is connected to the lubricating oil one-way inlet, and the other end of the central pipeline is connected to the lubricating oil storage area through the power housing.

[0006] As a further improvement of the utility model, the lubricating oil channel also includes a lubricating oil outlet, and a plurality of lubricating oil outlets are provided on one side of the power housing, and the lubricating oil outlets are communicated with the lubricating oil storage area.

[0007] As a further improvement of the utility model, a counterweight is provided on the crankshaft, the counterweight is located on one side of the crankshaft, the counterweight is provided with a raised arc structure, and when the counterweight rotates with the crankshaft, the counterweight drives the lubricating oil to splash into the cylinder liner.

[0008] As a further improvement of the utility model, the cylinder assembly also includes an oil scraper ring, and the outer surface of the piston body is connected to a plurality of oil scraper rings. The oil scraper rings contact and slide relatively with the inner wall of the cylinder liner, and the oil scraper rings smear the splashed lubricating oil on the inner wall of the cylinder liner.

[0009] As a further improvement of the present invention, the cylinder assembly further includes a heat sink, and the heat sink is arranged outside the cylinder sleeve.

[0010] As a further improvement of the utility model, the power end assembly is connected to two groups of cylinder assemblies, and two connecting rods are movably connected to the crankshaft. Each connecting rod is movably connected to a piston body of a cylinder assembly. When the crankshaft rotates, the piston bodies of the two groups of cylinder assemblies move back and forth alternately.

[0011] As a further improvement of the utility model, the high-pressure air supply device also includes an air guide pipeline, and an intake valve and an exhaust valve are provided on the cylinder sleeve of each group of the cylinder assemblies. The intake valve of the first cylinder assembly is connected to the low-pressure air supply equipment, and the exhaust valve of the first cylinder assembly is connected to the intake valve of the second cylinder assembly through the air guide pipeline, and the exhaust valve of the second cylinder assembly is connected to the high-pressure air storage equipment.

[0012] As a further improvement of the utility model, a heat sink is provided on the air guide pipe.

[0013] As a further improvement of the utility model, the high-pressure air supply device includes a main control system and a drive module. The drive module is connected to and drives the crankshaft to rotate, and the main control system is connected to and controls the drive module.

[0014] The beneficial effects of the utility model are as follows: the air supply module can be pressurized through a multi-stage cylinder assembly according to the need for high pressure of air supply, which can not only meet the high pressure performance requirements, but also greatly reduce the volume, and has the advantages of high pressure and small volume. At the same time, a lubricating oil storage area is formed in the device, and the lubricating oil is applied to the cylinder sleeve in the form of splashing and scraping oil under the drive of the crankshaft, so as to achieve lubrication of the entire device and effectively improve performance and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structural diagram of the high pressure air supply device of the utility model;

[0016] Figure 2 This is a structural explosion diagram of the high-pressure air supply device of the utility model;

[0017] Figure 3 It is a cross-sectional exploded view of the high pressure air supply device of the utility model;

[0018] Figure 4 It is the overall structural diagram of the power end assembly in the utility model;

[0019] Figure 5 It is a structural diagram of the crankshaft in the utility model;

[0020] Figure 6 This is the overall structural diagram of the high pressure air supply device of the utility model and the connection with the drive module;

[0021] Figure 7 It is a diagram of the operation buttons of the main control system in the utility model;

[0022] Figure 8 It is an operating principle diagram of the main control system in the utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] like Figures 1 to 3 As shown, a high-pressure air supply device of the utility model includes a power end assembly 1 and a cylinder assembly 2. The power end assembly 1 is connected to at least one group of cylinder assemblies 2. The power end assembly 1 includes a power housing 3, a crankshaft 4, and a connecting rod 5. The cylinder assembly 2 includes a cylinder liner 6 and a piston body 7. The power housing 3 is connected to the cylinder liner 6. The crankshaft 4 is movably connected in the power housing 3 and forms a lubricating oil storage area 11. The piston body 7 is connected to the crankshaft 4 through the connecting rod 5. The piston body 7 is movably connected in the cylinder liner 6. A lubricating oil channel is provided on the power housing 3. The lubricating oil channel is connected to the lubricating oil storage area 11. When the crankshaft 4 rotates, the lubricating oil in the lubricating oil storage area 11 lubricates the cylinder liner 6 and the piston body 7 in the form of splashing.

[0025] One or more cylinder assemblies 2 can be driven simultaneously by one power end assembly 1, and high-pressure gas with different pressure values ​​can be generated by step-by-step pressurization of multiple cylinder assemblies 2, which can greatly reduce the volume of the device while meeting the high-pressure gas supply requirements. At the same time, a lubricating oil storage area 11 is formed inside the power housing 3, which can lubricate the movement of the crankshaft 4 and the connecting rod 5. At the same time, the rotation of the crankshaft 4 is used to splash the lubricating oil into the cylinder liner 6, and the movement of the piston body 7 realizes the lubrication of the inside of the cylinder liner 6.

[0026] like Figure 4 As shown, the lubricating oil channel includes a lubricating oil one-way inlet 31 and a central pipeline 32. The power housing 3 is provided with a lubricating oil one-way inlet 31. One end of the central pipeline 32 is connected to the lubricating oil one-way inlet 31, and the other end of the central pipeline 32 is connected to the lubricating oil storage area 11 through the power housing 3.

[0027] The lubricating oil passage further includes a lubricating oil outlet 33 . A plurality of lubricating oil outlets 33 are provided on one side of the power housing 3 . The lubricating oil outlets 33 are communicated with the lubricating oil storage area 11 .

[0028] The power housing 3 is designed with a sophisticated lubricating oil channel. The lubricating oil one-way inlet 31 flows from the housing and the central pipeline 32 to the lubricating oil storage area 11 in the power end assembly 1 to lubricate the crankshaft 4 and the connecting rod 5 bearings. During the operation of the high-pressure air supply device, the piston body 7, the cylinder liner 6 and other working parts are lubricated in the form of splash lubrication through the rotation of the counterweight block 43 and the crankshaft 4. At the same time, the power housing 3 is also designed with multiple lubricating oil outlets 33 to ensure smooth oil discharge of the lubricating oil.

[0029] like Figure 5 As shown, a counterweight 43 is provided on the crankshaft 4. The counterweight 43 is located on one side of the crankshaft 4. The counterweight 43 is provided with a raised arc structure. When the counterweight 43 rotates with the crankshaft 4, the counterweight 43 drives the lubricating oil to splash into the cylinder sleeve 6. A driving shaft 41 connected to the driving module 9 is provided at the center of the crankshaft 4 to drive the crankshaft 4 to rotate; an eccentric block 42 is provided on the other side of the crankshaft 4. The eccentric block 42 is used to flexibly connect the connecting rod 5, thereby driving the piston body 7 to achieve reciprocating motion, and the counterweight 43 is provided to balance the center of gravity of the entire crankshaft 4. The positions of the counterweight 43 and the eccentric block 42 are opposite to the driving shaft 41. The raised arc structure of the counterweight 43 can hold the lubricating oil. When the counterweight 43 rotates to the position of the cylinder sleeve 6 under the drive of the crankshaft 4, the lubricating oil will be splashed to the bottom of the inner wall of the cylinder sleeve 6 under the action of inertia, and the cylinder sleeve 6 will be lubricated in cooperation with the oil scraper ring 71.

[0030] like Figure 2 and Figure 3 As shown, the cylinder assembly 2 further includes an oil scraper ring 71. A plurality of oil scraper rings 71 are connected to the outer surface of the piston body 7. The oil scraper ring 71 contacts and slides relatively with the inner wall of the cylinder liner 6. The oil scraper ring 71 smears the splashed lubricating oil on the inner wall of the cylinder liner 6. The oil scraper ring 71 can be evenly distributed on the piston body 7, including being arranged at the bottom and top of the piston body 7. Since the splashed lubricating oil will be concentrated at the position of the cylinder liner 6 close to the power housing 3, after the piston body 7 moves downward, the oil scraper ring 71 at the bottom will contact the lubricating oil at this position, and smear it to the upper half of the cylinder liner 6 as the piston body 7 moves upward, and the oil hanging ring at the top will further smear the lubricating oil to a higher position, thereby achieving lubrication of the inner wall of the cylinder liner 6.

[0031] When the high pressure air supply device is in operation, the lubricating oil flows in from the lubricating oil one-way inlet 31, passes through the power housing 3 and the central pipeline 32, and finally flows into the power end to lubricate the crankshaft 4 and related bearings. During the rotation of the crankshaft 4, the lubricating oil stored in the power end is splashed to the inner side of the cylinder liner 6 through the counterweight block 43 and the crankshaft 4 in the form of splash lubrication. Figure 3 The position of the middle number 63. When the piston body 7 is driven by the crankshaft 4 and the connecting rod 5 to operate normally, the scraper ring 71 on the piston body 7 evenly smears the lubricating oil splashed on the inner side of the cylinder sleeve 6 on the inner side of the cylinder sleeve 6 in the form of scraping oil, thereby achieving lubrication between the inner side of the cylinder sleeve 6 and the piston body 7 in the working state. At the same time, the power housing 3 is also designed with multiple lubricating oil outlets to ensure smooth lubricating oil outlet.

[0032] The outer surface of the piston body 7 is also covered with a piston ring 72 to ensure the sealing effect between the piston body 7 and the cylinder sleeve 6 to prevent leakage when the gas is pressurized. The oil scraper ring 71 and the piston ring 72 can be alternately arranged on the outer surface of the piston body 7, or as shown in FIG. Figure 2 , Figure 3 As shown, an oil scraper ring 71 is only provided on the top and / or bottom of the piston body 7 , and a piston ring 72 is provided on the middle portion or other portions of the piston body 7 .

[0033] The cylinder assembly 2 also includes a heat sink 21, which is arranged outside the cylinder sleeve 6. The heat dissipation of the cylinder sleeves 6 on both sides adopts an aluminum multi-layer multi-sheet structure, which effectively controls the volume and mass of the entire cylinder while ensuring the heat dissipation effect. Compared with the traditional water cooling method, the required parts are greatly reduced and the occupied volume is also significantly reduced.

[0034] The power end assembly 1 is connected to two cylinder assemblies 2, and two connecting rods 5 are movably connected to the crankshaft 4. Each connecting rod 5 is movably connected to a piston body 7 of a cylinder assembly 2. When the crankshaft 4 rotates, the piston bodies 7 of the two cylinder assemblies 2 move back and forth alternately.

[0035] The high-pressure air supply device also includes an air guide pipe 8. An air intake valve 61 and an air outlet valve 62 are provided on the cylinder sleeve 6 of each group of cylinder assemblies 2. The air intake valve 61 of the first cylinder assembly 2 is connected to the low-pressure air supply equipment, and the air outlet valve 62 of the first cylinder assembly 2 is connected to the air intake valve 61 of the second cylinder assembly 2 through the air guide pipe 8, and the air outlet valve 62 of the second cylinder assembly 2 is connected to the high-pressure air storage equipment.

[0036] The low-pressure air input from the outside enters the first cylinder assembly 2 through the air inlet 64 and the air inlet valve 61, and is pressurized by the movement of the piston body 7 in the first cylinder assembly 2. Under the action of pressure, the initially pressurized gas is discharged from the outlet valve 62 and the outlet 65, and enters the second cylinder assembly 2 through the air guide 8, the air inlet 64, and the air inlet valve 61. The initially pressurized gas is further pressurized by the movement of the piston body 7 in the second cylinder assembly 2 to obtain high-pressure gas of the required pressure value, which is discharged from the outlet 65. The connecting rods 5 corresponding to the two piston bodies 7 are connected to the same eccentric position on the crankshaft 4. When the crankshaft 4 rotates, one of the piston bodies 7 retreats to perform the intake operation, while the other piston body 7 performs the extrusion operation, pressurizing the gas and discharging the gas, and the alternating operation of the two cylinder assemblies 2 is realized through one crankshaft 4.

[0037] A heat sink 21 is provided on the high pressure gas supply device air guide pipe 8. The heat sink 21 dissipates heat from the air guide pipe 8 transmitting high pressure gas, and further cools the gas in the pipe to ensure the overall heat dissipation effect.

[0038] The cylinder assembly 2 also includes gaskets and various standard parts, etc.; the intake and exhaust structure includes: an intake and exhaust device, a multi-stage intake valve 61, a multi-stage exhaust valve, gaskets and various standard parts, etc.

[0039] like Figure 6 As shown, the high-pressure air supply device includes a main control system and a drive module 9 . The drive module 9 is connected to and drives the crankshaft 4 to rotate, and the main control system is connected to and controls the drive module 9 .

[0040] The drive module 9 includes a motor, a pulley base 92, and a clutch 91. The motor drives the pulley base 92 through a pulley, and the pulley base 92 is connected to the clutch 91, and the clutch 91 is connected to the crankshaft 4. When the high-pressure air supply device is not working, the clutch 91 is normally open; when the high-pressure air supply device needs to work, the clutch 91 is closed, and the pulley base 92 drives the drive shaft 41 in the base, and then drives the crankshaft 4 of the power end assembly 1 through the drive shaft 41 to output power. The crankshaft 4 transmits the obtained power to the connecting rod 5 and the piston body 7; through the reciprocating motion of the piston in the cylinder sleeve 6, the inhaled gas is compressed in multiple stages to obtain the gas with the required rated high pressure value.

[0041] like Figure 7 and Figure 8 As shown, after the mechanical parts of the high-pressure air supply device and the drive module 9 are installed, the main control system can be used for electrical control to operate the high-pressure air supply device; the specific control process of the automated main control system is as follows:

[0042] a. First, the whole circuit is controlled by DC24V. When the operation button is turned to the "reset" end, the main control system is powered off and the high-pressure air supply module does not work.

[0043] b. When the lever is adjusted to the "manual" end, the control switches to the manual mode, and the "manual working condition" light is on. Press "manual on" again to officially start the manual mode. At this time, the electromagnetic clutch 91 is closed, the air compressor starts to run, and the "air compressor running" indicator light is on; once the "manual on" button is not pressed, the circuit is naturally powered off, the clutch 91 is opened, the air compressor stops, and the "air compressor running" indicator light is off.

[0044] c. When the lever is adjusted to the "automatic" end, and the control is switched to the automatic mode, the "automatic working condition" light is on. The pressure sensor receives the signal and turns on the automatic mode. At this time, the electromagnetic clutch 91 is closed, the air compressor starts to run, and the "air compressor running" indicator light is on; when the pressure reaches the rated value, the pressure sensor sends a disconnect signal, the circuit is powered off, the clutch 91 opens, the air compressor stops, and the "air compressor running" indicator light goes out; when the pressure does not reach the rated value and the circuit needs to be disconnected, the rocker can be manually moved to the "reset" end, or the circuit can be disconnected to open the clutch 91 and stop the air compressor.

[0045] This high-pressure air supply module has the performance characteristics of small size and high pressure. The mechanism of key components such as piston body 7, cylinder liner 6, oil scraper ring 71, tolerance size of parts, corresponding process flow, manufacturing and processing are independently designed and developed. At the same time, the key components such as piston body 7 and cylinder liner 6 use new materials and processing technology, which can effectively improve the performance and service life of piston rings.

[0046] This high pressure air supply device is an intelligent equipment with a two-cylinder V-shaped structure and equipped with an automated main control system. It has good mechanical and electrical interfaces, compact structure, light weight, high working pressure, high reliability, etc. It can be used in various special and armored vehicle chassis power auxiliary devices, bottle filling, purging, airborne air source, ship air source and many other systems. It has obvious advantages and a large market demand.

[0047] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A high pressure gas supply device, characterized in that: It includes a power end assembly and a cylinder assembly, the power end assembly is connected to at least one group of cylinder assemblies, the power end assembly includes a power housing, a crankshaft, and a connecting rod, the cylinder assembly includes a cylinder liner and a piston body, the power housing is connected to the cylinder liner, the crankshaft is movably connected in the power housing and forms a lubricating oil storage area, the piston body is connected to the crankshaft through a connecting rod, the piston body is movably connected in the cylinder liner, a lubricating oil channel is provided on the power housing, the lubricating oil channel is connected to the lubricating oil storage area, and when the crankshaft rotates, the lubricating oil in the lubricating oil storage area lubricates the cylinder liner and the piston body in the form of splashing.

2. The high pressure gas supply device according to claim 1, characterized in that: The lubricating oil channel includes a lubricating oil one-way inlet and a central pipeline. The power housing is provided with a lubricating oil one-way inlet. One end of the central pipeline is connected to the lubricating oil one-way inlet, and the other end of the central pipeline is connected to the lubricating oil storage area through the power housing.

3. The high pressure gas supply device according to claim 2, characterized in that: The lubricating oil passage also includes a lubricating oil outlet. One side of the power housing is provided with a plurality of lubricating oil outlets, and the lubricating oil outlets are communicated with the lubricating oil storage area.

4. The high pressure gas supply device according to claim 1, characterized in that: A counterweight is provided on the crankshaft, the counterweight is located on one side of the crankshaft, and the counterweight is provided with a raised arc structure. When the counterweight rotates with the crankshaft, the counterweight drives the lubricating oil to splash into the cylinder liner.

5. The high pressure gas supply device according to claim 1, characterized in that: The cylinder assembly also includes an oil scraper ring. The outer surface of the piston body is connected to a plurality of oil scraper rings. The oil scraper rings are in contact with and slide relatively to the inner wall of the cylinder sleeve. The oil scraper rings smear the splashed lubricating oil on the inner wall of the cylinder sleeve.

6. The high pressure gas supply device according to claim 1, characterized in that: The cylinder assembly further includes a heat sink, which is arranged outside the cylinder sleeve.

7. The high pressure gas supply device according to claim 1, characterized in that: The power end assembly is connected to two cylinder assemblies, and two connecting rods are movably connected to the crankshaft. Each connecting rod is movably connected to a piston body of a cylinder assembly. When the crankshaft rotates, the piston bodies of the two cylinder assemblies move back and forth alternately.

8. The high pressure gas supply device according to claim 7, characterized in that: It also includes an air guide pipeline. An air intake valve and an air outlet valve are provided on the cylinder sleeve of each group of cylinder assemblies. The air intake valve of the first cylinder assembly is connected to a low-pressure air supply device, and the air outlet valve of the first cylinder assembly is connected to the air intake valve of the second cylinder assembly through the air guide pipeline, and the air outlet valve of the second cylinder assembly is connected to a high-pressure air storage device.

9. The high pressure gas supply device according to claim 8, characterized in that: The air guide pipe is provided with a heat sink.

10. The high pressure gas supply device according to claim 1, characterized in that: It includes a main control system and a driving module. The driving module is connected to and drives the crankshaft to rotate, and the main control system is connected to and controls the driving module.

Images