CN212055045U

CN212055045U - Air pump breathing device

Info

Publication number: CN212055045U
Application number: CN202020740609.3U
Authority: CN
Inventors: 迟利民
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-12-01
Anticipated expiration: 2030-05-08

Abstract

The utility model discloses an air pump breathing device, wherein a breathing tube mounting hole is connected with a buffer tank and a one-way valve in sequence through a breathing tube; the inner diameter of the buffer tank is larger than that of the breathing tube; the end of the one-way valve is either directly evacuated or connected to a line between the air filter and the air inlet valve of the air pump. Lubricating oil discharged from the breathing tube can return to the machine body, the lubricating oil level in the machine body is kept higher than the lower dead point of the crankshaft for a long time, and long-time effective lubrication is realized.

Description

Air pump breathing device

Technical Field

The utility model relates to a respiratory device of air pump, in particular to respiratory device of piston air pump.

Background

The breathing device of the piston type air pump mainly has the advantages that the interior of the air pump body is communicated with the atmosphere, the oil temperature and the pressure in the air pump body are reduced, and lubricating oil is prevented from being discharged from the air pump body. The prior art air pump breathing apparatus generally includes a breathing tube connecting a machine body and an air inlet valve, and the lower end of the breathing tube is generally connected to the middle upper part of the machine body (crankcase). In another prior art respiratory device, the outer end of the breathing tube is directly connected to the atmosphere through a filter. The breathing function of the air pump is usually realized by combining the two measures.

In use, the existing breathing device is lack of effective protection measures, the piston moves up and down at high frequency when the air pump works, the pressure in a crankcase is large, air pressure in the engine body changes at high frequency, the air pump breathes too quickly, lubricating oil and oil mist are easily sprayed out of the engine body, the lubricating oil in the engine body is too fast to be lost, the oil surface is too low, lubricating points of relevant parts of the air pump cannot be lubricated in time, and the air pump is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, overcome above-mentioned prior art's defect, provide a modified air pump respiratory device, avoid the air pump to breathe prohibitively to make and can return the organism from respiratory tube exhaust lubricating oil, keep the organism internal lubrication fluid face for a long time to be higher than bent axle bottom dead center (the minimum of bent axle motion), in order to ensure that the air pump is effective lubricated for a long time.

The utility model provides a technical scheme that its technical problem adopted as follows:

air pump respiratory device, the air pump include the organism, the piston cylinder is installed to the organism upper end, the cylinder cap is installed to the piston cylinder upper end, the bent axle has in the organism, the respiratory tube mounting hole has been seted up to one side of organism, its characterized in that: the breathing tube mounting hole is sequentially connected with a buffer tank and a one-way valve through a breathing tube; the inner diameter of the buffer tank is larger than that of the breathing tube; the end of the one-way valve is either directly evacuated or connected to a line between the air filter and the air inlet valve of the air pump.

Preferably, the breathing tube mounting hole is formed in the end portion, on the side edge of the machine body, of the crankshaft, where the movement direction of the highest point points when the crankshaft rotates.

Preferably, the buffer tank is internally provided with an oil return filter cylinder or an oil return filter screen.

Further preferably, the lower end of the oil return filter cylinder is open, and the upper end and the side wall of the oil return filter cylinder are provided with filter screens; and oil return gaps are formed between the side surface and the lower end of the oil return filter cylinder and the inner wall of the buffer tank.

The utility model discloses have following positive effect:

the first breathing pipe and the breathing pipe are connected with a one-way valve positioned at the tail end of the buffer tank, and the higher-pressure exhaled air exhausted from the machine body through the breathing pipe is discharged in a one-way mode through the one-way valve, so that the oil injection problem caused by rapid respiration of the air pump is effectively avoided.

Second, the breathing tube is connected with the buffer tank, the diameter of buffer tank is obviously greater than the breathing tube to can be provided with in the buffer tank that the oil return is strained a section of thick bamboo or the oil return filter screen, organism exhaust lubricating oil and oil mist in time obtain the pressure release when here, the lubricating oil velocity of flow reduces by a wide margin, lubricating oil flows back to the organism under the effect of a section of thick bamboo or the oil return filter screen is strained in the oil return, has ensured to have higher liquid level in the organism for a long time, has guaranteed the lubrication of the relevant lubricating point of air pump, has reached.

Thirdly, the position design of the respiratory tube mounting hole arranged on the machine body is very unique. The crankshaft is positioned at the end part of the side edge of the machine body, which points to the movement direction of the highest point when the crankshaft rotates, instead of the middle upper part of the conventional machine body. The lubricating oil driven by the crankshaft to move at a high speed is in a descending state on one side of the mounting hole and is not easy to discharge from the breathing tube, and the design ensures that the lubricating oil is discharged as little as possible.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a side schematic view of fig. 1, primarily for illustrating the location of the breathing tube mounting holes.

Fig. 3 is a schematic structural shape diagram of an oil return filter cartridge in an embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and accompanying drawings.

As figure 1, the embodiment of the utility model provides an air pump include as the organism 2 of crankcase, the piston cylinder 4 is installed to 2 upper ends of organism, and cylinder cap 5 is installed to 4 upper ends of piston cylinder, is equipped with cylinder admission valve and discharge valve on the cylinder cap 5. The lower end of the machine body 2 is provided with a machine base 1. The crankshaft in the machine body 2 rotates under the action of a power machine (such as a motor), and drives a piston in the piston cylinder 4 to reciprocate up and down to do work through a connecting rod mechanism.

A breathing tube mounting hole 3 is formed in one side of the machine body 2, the breathing tube mounting hole 3 is preferably formed in the end portion of the side edge of the machine body, where the highest point of the breathing tube mounting hole points in the moving direction when the crankshaft rotates, as shown in fig. 2, a dotted circle 6 represents the outermost (or maximum) rotation trajectory of the crankshaft, and the rotation direction of the crankshaft in this embodiment is counterclockwise in fig. 2, so that the breathing tube mounting hole 3 is formed in the upper end of the left side of the machine body. If the rotation direction of the crankshaft is clockwise in fig. 2, the breathing tube mounting hole 3 is arranged at the upper end of the right side of the machine body.

Still referring to fig. 1, the breathing tube mounting hole 3 is connected with a buffer tank 8 and a one-way valve 9 in sequence through a breathing tube 7. The internal diameter of the buffer tank 8 is significantly larger than the internal diameter of the breathing tube 7. The end of the non-return valve 9 is either directly vented (to atmosphere) or connected to a line between the air pump air filter and the air inlet valve. The utility model discloses the preferred latter mode to utilize discharged trace oil mist to lubricate parts such as cylinder admission valve, piston and discharge valve, and can not the polluted environment.

In order to better achieve the purpose of the present invention, the buffer tank 8 may further have an oil return filter cartridge 10 therein as shown in fig. 3. The lower end of the oil return filter cylinder 10 is open, and the upper end and the side wall are provided with filter screens. And oil return gaps are formed between the side surface and the lower end of the oil return filter cylinder 10 and the inner wall of the buffer tank 8, and lubricating oil can flow back downwards from the inner side and the outer side of the oil return filter cylinder 10 and enter the machine body 2.

Other forms of oil return filter cartridges or oil return filter screens can be arranged in the buffer tank 8 to play roles in oil blocking and oil return.

Claims

1. Air pump respiratory device, the air pump include organism (2), piston cylinder (4) are installed to organism (2) upper end, cylinder cap (5) are installed to piston cylinder (4) upper end, the bent axle has in the organism, respiratory tube mounting hole (3), its characterized in that have been seted up to one side of organism: the breathing tube mounting hole (3) is sequentially connected with a buffer tank (8) and a one-way valve (9) through a breathing tube (7); the inner diameter of the buffer tank (8) is larger than that of the breathing tube (7); the end of the one-way valve (9) is either directly emptied or connected to a line between the air pump air filter and the air inlet valve.

2. The air pump breathing device of claim 1, wherein: the respiratory tube mounting hole (3) is arranged at the end part of the side edge of the machine body, which points to the movement direction of the highest point when the crankshaft rotates.

3. The air pump breathing device according to claim 1 or 2, wherein: an oil return filter cylinder (10) or an oil return filter screen is arranged in the buffer tank (8).

4. The air pump breathing device of claim 3 wherein: the lower end of the oil return filter cylinder (10) is open, and the upper end and the side wall of the oil return filter cylinder are provided with filter screens; oil return clearances are formed between the side surface and the lower end of the oil return filter cylinder (10) and the inner wall of the buffer tank (8).