CN210949021U

CN210949021U - Miniature gas compression device

Info

Publication number: CN210949021U
Application number: CN201921534838.3U
Authority: CN
Inventors: 彭云晖; 夏杨; 吴凯; 黄云龙
Original assignee: No 60 Institute of Headquarters of General Staff of PLA
Current assignee: Rongtong Aviation Engine Technology Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-07-07
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a miniature gas compression device of porous piston valve air admission control, miniature gas compression device of porous piston valve air admission control is by including piston, cylinder block, the piston freely slides in the cylinder block, its characterized in that: (1) the side surface of the cylinder body is provided with an air inlet hole and an exhaust hole, the exhaust hole is higher than the air inlet hole, a valve block is arranged in the cylinder body between the air inlet hole and the exhaust hole, the top of the valve block is provided with a valve block homing device, and a piston homing device is arranged on the piston. The utility model has no independent air inlet control valve, and the air inlet valve is controlled to be closed by the up-and-down motion of the piston; (2) and the air inlet flow can be adjusted by adopting a circumferential porous air inlet mode. The utility model has the advantages of small axial length, small compression stroke, small mechanism and compact structure. Meanwhile, the air inlet flow of the air compression device can be controlled within the range of 1-7 times by adjusting the number of the air inlet holes, and the air compression device can be further suitable for air supply devices with different air inlet requirements.

Description

Miniature gas compression device

Technical Field

The utility model relates to a gas compressor field, concretely relates to porous piston valve miniature gas compression device of control of admitting air.

Background

The flash point of the heavy oil is high, the heavy oil is not easy to atomize, the heavy oil is difficult to rapidly start by adopting an ignition mode, the air-entraining nozzle engine is an air low-pressure auxiliary direct injection engine in a cylinder, and fuel oil is subjected to auxiliary atomization by the pressure of gas, so that the heavy oil is rapidly started at a low temperature. The air supply mode of the air entrainment nozzle is an electronic air pump and a mechanical air compression pump. The electronic air pump is driven by the motor, so that the motor for providing rated power has large volume and heavy weight, the whole size of the engine is increased, and the weight of the whole engine is increased; in the long-time running process of the engine, the electronic air pump needs to work continuously, and the long-time working reliability of the motor is reduced, so that the stability of the system is low. And the air intake and exhaust control of the current general mechanical gas compression pump is an independent structure, and the mechanical gas compression pump has the defects of complex mechanism, large volume and heavy weight, and is not beneficial to installation and daily maintenance.

Disclosure of Invention

The utility model discloses a miniature gas compression device of porous piston valve admission control utilizes cam drive, simple structure, and is small, light in weight, compact structure, and the stroke is little, simple to operate, and the working process operation is reliable and stable.

The technical scheme for realizing the purpose of the invention is as follows:

the utility model provides a miniature gas compression device, includes piston, cylinder block, the piston freely slides in the cylinder block, sets up inlet port, exhaust hole in the side of cylinder block, the exhaust hole is higher than the inlet port setting, sets up the valve block in the cylinder block between inlet port and exhaust hole, the valve block top sets up the valve block homing device.

The cylinder block comprises a first cylinder block and a second cylinder block, the first cylinder block is fixedly arranged at the top of the second cylinder block, the diameter of the first cylinder block is larger than that of the second cylinder block, an exhaust hole is formed in the side face of the first cylinder block, an air inlet hole is formed in the side face of the second cylinder block, the valve block is arranged at the joint of the first cylinder block and the second cylinder block, and the bottom edge of the valve block is in close contact with the top of the second cylinder block.

The valve plate resetting device is an exhaust compression spring, a base is arranged on the top surface of the second cylinder body, one end of the exhaust compression spring is arranged in the center of the lower side of the base, the other end of the exhaust compression spring is arranged in the center of the valve plate, and the exhaust compression spring is in a compression stress state.

Still include the shell body, the shell body is fixed base and second cylinder block position mutually.

The piston is provided with a transmission pin, the transmission pin is arranged on the lower portion of the piston, a roller is further penetrated in the transmission pin, the roller is arranged in the center of the transmission pin, a bearing is arranged between the roller and the transmission pin, and a piston homing device is further arranged on the piston.

The piston homing device is a piston compression spring, a spring support is arranged at the edge of the transmission pin, and the piston compression spring is arranged between the spring support and the first cylinder body.

The top of the piston is lower than the lower edge of the air inlet hole or is flush with the lower edge of the air inlet hole, 1-10 air inlet holes are arranged, 1 exhaust hole is arranged, and the diameter of the air inlet hole is larger than or equal to that of the exhaust hole.

And a sealing ring is arranged on the contact surface of the base and the outer shell, and a piston ring is arranged on the contact surface of the piston and the second cylinder body.

Compared with the prior art, the invention has the following remarkable advantages:

(1) the utility model discloses it is small, light in weight, simple to operate for the whole system of engine is more succinct.

(2) And an independent air inlet control valve is not arranged, and the air inlet valve is controlled to be closed through the up-and-down movement of the piston. In the air inlet process, the piston moves up and down to control the opening and closing of the air inlet hole, when the piston is at the bottom dead center, air naturally enters the air cylinder body through the plurality of air inlet holes in the upper circumferential direction of the air cylinder body, the air inlet hole is closed along with the upward movement of the piston, the compression process is carried out, and when the pressure in the air cylinder reaches the set pressure of the exhaust spring, the valve plate is bounced open to exhaust. Has the advantages of simple and compact structure.

(3) The utility model discloses a porous air inlet mode of circumference, inlet port axial height are according to the design gas compression device stroke and the actual compression ratio is confirmed, through adjustment inlet port size, under obtaining equal actual compression ratio condition, it is little to have axial length, and the compression stroke is little, and the mechanism is small and exquisite, compact structure's advantage. Meanwhile, the air inlet flow of the air compression device can be controlled within the range of 1-7 times by adjusting the number of the air inlet holes, and the air compression device can be further suitable for air supply devices with different air inlet requirements.

Drawings

Fig. 1 is a sectional view of the porous piston valve inlet control micro gas compressor of the present invention.

Fig. 2 is a structural diagram of the porous piston valve air intake control micro gas compression device of the present invention.

Wherein, the device comprises 1-exhaust hole, 2-exhaust compression spring, 3-valve plate, 4-base, 5-sealing ring, 6-outer shell, 7-air inlet hole, 8-piston ring, 9-piston, 10-driving pin, 11-roller, 12-bearing, 13-spring support, 14-cylinder block, and 15-piston compression spring.

Detailed Description

The utility model relates to a miniature gas compression device, including piston 9, cylinder block 14, piston 9 freely slides in cylinder block 14 to compress the gas in the cylinder block 14. The utility model discloses set up inlet port 7, exhaust hole 1 in the side of cylinder block 14, exhaust hole 1 is higher than the inlet port 7 setting, particularly, the cylinder block includes first cylinder block and second cylinder block, and the fixed top that sets up at the second cylinder block of first cylinder block, and the diameter of first cylinder block is greater than the second cylinder block, sets up the exhaust hole in the side of first cylinder block, and the side of second cylinder block sets up the inlet port.

In order to guarantee that gas can obtain the compression in the cylinder block, the utility model discloses set up valve block 3 in the cylinder block between inlet port 7 and exhaust hole 1, specific theory, valve block 3 sets up in the junction of first cylinder block and second cylinder block, the bottom edge of valve block 3 and the top in close contact with of second cylinder block. Thus, after the gas entering from the gas inlet hole 7 is compressed, the valve plate 3 is opened and the gas is discharged from the gas outlet hole 1, thereby realizing the compression of the gas.

The valve plate homing device is arranged at the top of the valve plate 3 and is an exhaust compression spring 2, a base 4 is arranged on the top surface of the second cylinder body, one end of the exhaust compression spring 2 is arranged in the center of the lower side of the base 4, the other end of the exhaust compression spring 3 is arranged in the center of the valve plate 3, and the exhaust compression spring is in a compression stress state. The valve plate 3 is not only responsible for returning the valve plate to the original position, but also applies force to the valve plate, and the compression ratio of gas is improved.

The utility model discloses in still including shell body 6, shell body 6 is fixed base 4 and second cylinder position mutually, sets up the sealing washer on the contact surface of base and shell body, has improved like this the utility model discloses holistic leakproofness makes air compression more abundant.

Further, piston 9 on set up drive pin 10, drive pin 10 sets up in piston 9 lower part, has still worn gyro wheel 11 in drive pin 10, gyro wheel 11 sets up at drive pin 10 central authorities, sets up bearing 12 between gyro wheel 11 and drive pin 10, the utility model discloses well drive arrangement direct action makes its limit rotation reciprocate in gyro wheel 11, and the removal of gyro wheel 11 has driven drive pin 10's removal, and then has driven piston 9 and move from top to bottom, the contact surface of piston 9 and second cylinder block on set up piston ring 8, its leakproofness that can effectively increase piston 9 makes it more be effectual compressed gas.

The piston 9 is also provided with a piston homing device which is a piston compression spring 15, the edge of the transmission pin 10 is provided with a spring support 13, and the piston compression spring 13 is arranged between the spring support 15 and the first cylinder body. Furthermore, an accommodating groove is formed between the first cylinder body and the outer shell 6, the top of the piston compression spring 13 is clamped in the accommodating groove, and the piston compression spring 13 assists the roller 11 to press the piston 9 downwards until the piston returns, so that the workload of the auxiliary roller is reduced.

The utility model discloses in, the top of piston 9 be less than the lower edge of inlet port 7 or with the lower edge parallel and level of inlet port 7, inlet port 7 set up 1-10, exhaust hole 1 set up 1, the diameter of inlet port 7 is more than or equal to the diameter in exhaust hole 1.

In the utility model, the cylinder body comprises 1-10 air inlets and 1 exhaust hole. Fresh compressed air enters the cylinder body of the compression device through 1-10 air inlets, the piston moves upwards, the fresh air is compressed, when the pressure reaches the set value of the exhaust spring, the high-pressure air pushes the exhaust valve plate open, the exhaust process is carried out, and the high-pressure air is exhausted from 1 exhaust hole. Then the piston valve returns to the bottom dead center under the action of the piston compression spring and enters the air intake process.

In the air inlet process, when the piston is at a bottom dead center, air naturally enters the cylinder body through the plurality of air inlet holes in the circumferential direction of the cylinder body, the air inlet holes are closed along with the upward movement of the piston, the compression process is carried out, and the air compressor has the advantages of simple and compact structure.

Furthermore, the mode of adopting a single air inlet hole under the condition that the total flow of the air inlet holes is determined has the defects that the axial length of the air hole is larger, the integral axial length of the mechanism is larger, and the mechanism is not suitable for being installed on a structure with the axial length and installation limitation; the utility model discloses a porous air inlet mode of circumference, inlet port axial height are according to the design gas compression device stroke and the actual compression ratio is confirmed. The utility model discloses gas compression device stroke is for moving from lower dead center to top dead center. In other words, the gas compression process is performed at the moment when the gas inlet hole is closed, and the calculation of the actual compression ratio of the gas device is started at this moment.

The utility model discloses a porous air inlet mode of circumference through adjustment inlet port size, is obtaining under the condition of equal actual compression ratio, and it is little to have axial length, and the compression stroke is little, and the mechanism is small and exquisite, compact structure's advantage. Meanwhile, the air inlet flow of the air compression device can be controlled within the range of 1-7 times by adjusting the number of the air inlet holes, and the air compression device can be further suitable for air supply devices with different air inlet requirements.

Further, the cylinder body adopts a ceramic plating process.

Finally, the utility model discloses porous piston valve miniature gas compression device of control of admitting air not only can be applied to and press from both sides gas nozzle engine field, can independently regard as small-size gas compression device to supply air externally.

Claims

1. A miniature gas compression device comprising a piston, a cylinder block, said piston being free to slide within the cylinder block, wherein: the side surface of the cylinder body is provided with an air inlet hole and an exhaust hole, the exhaust hole is higher than the air inlet hole, a valve block is arranged in the cylinder body between the air inlet hole and the exhaust hole, and the top of the valve block is provided with a valve block homing device.

2. The gas compression device of claim 1, wherein: the cylinder block comprises a first cylinder block and a second cylinder block, the first cylinder block is fixedly arranged at the top of the second cylinder block, the diameter of the first cylinder block is larger than that of the second cylinder block, an exhaust hole is formed in the side face of the first cylinder block, an air inlet hole is formed in the side face of the second cylinder block, the valve block is arranged at the joint of the first cylinder block and the second cylinder block, and the bottom edge of the valve block is in close contact with the top of the second cylinder block.

3. A gas compressing apparatus as recited in claim 2, further comprising: the valve plate resetting device is an exhaust compression spring, a base is arranged on the top surface of the second cylinder body, one end of the exhaust compression spring is arranged in the center of the lower side of the base, the other end of the exhaust compression spring is arranged in the center of the valve plate, and the exhaust compression spring is in a compression stress state.

4. A gas compressing apparatus as claimed in claim 3, wherein: still include the shell body, the shell body is fixed base and second cylinder block position mutually.

5. The gas compression device of claim 1, wherein: the piston is provided with a transmission pin, the transmission pin is arranged on the lower portion of the piston, a roller is further penetrated in the transmission pin, the roller is arranged in the center of the transmission pin, a bearing is arranged between the roller and the transmission pin, and a piston homing device is further arranged on the piston.

6. The gas compressing apparatus as set forth in claim 5, wherein: the piston homing device is a piston compression spring, a spring support is arranged at the edge of the transmission pin, and the piston compression spring is arranged between the spring support and the first cylinder body.

7. The gas compression device of claim 1, wherein: the top of the piston is lower than the lower edge of the air inlet hole or is flush with the lower edge of the air inlet hole, 1-10 air inlet holes are arranged, 1 exhaust hole is arranged, and the diameter of the air inlet hole is larger than or equal to that of the exhaust hole.

8. The gas compressing apparatus as set forth in claim 4, wherein: and a sealing ring is arranged on the contact surface of the base and the outer shell, and a piston ring is arranged on the contact surface of the piston and the second cylinder body.