Automatic oiling device for refrigeration compressor

Abstract

The automatic oil injection device of refrigeration compressor comprises an oil tank, an oil tank top plate, an oil tank top plate inner side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top plate outer side, an oil tank top

Description

TECHNICAL FIELD

[0001] The present application relates to the automatic oil injection device of refrigeration compressor, belongs to the technical field of compressor oil injection equipment. BACKGROUND

[0002] The compressor is the necessary device of common refrigeration equipment, in order to ensure the good work of the compressor, the internal injection of the compressor is quantitatively injected before the compressor is shipped. The existing automatic oil injection device of refrigeration compressor, such as Chinese utility model patent "authorization announcement number: CN202266392U, authorization announcement date: June 6, 2012, name: a kind of air pressure type directional oil injection machine for compressor oil injection", it adopts hydraulic cylinder to move oil tank, when the oil tank is filled with oil, the oil tank is lifted, the oil tank is tightly attached to the top plate of oil tank to form airtight space, then the oil in the oil tank is quantitatively pushed into the compressor from the oil outlet pipe by filling high pressure gas in the airtight space, realizes the quantitative oil injection. The oil injection machine only uses hydraulic cylinder to push the oil tank to realize the sealing of the oil tank and the top plate of oil tank, the compression mode of the oil tank is single, long time use, the compression sealing is not firm, easy to cause the defect of insufficient oil injection. SUMMARY

[0003] The purpose of the present application is to solve the above technical defects of the existing compressor oil injection device, provide a new compressor automatic oil injection device, the oil injection device is provided with two kinds of linkage auxiliary compression devices for oil tank, two kinds of auxiliary compression devices are organically combined together, which greatly guarantees the compression sealing of the oil tank, effectively guarantees the accurate oil injection, and has outstanding practicability.

[0004] The above technical purpose of the present application is realized by the following technical scheme:

[0005] An automatic oil filling device for a refrigeration compressor includes an oil tank. An oil hopper is located inside the top plate of the oil tank. The vertical movement of the oil hopper within the oil tank is driven by two hydraulic cylinders on the outside of the top plate via their respective U-shaped supports. The U-shaped supports are inverted and mounted on the top of the hydraulic cylinder extension rods. The two support rods of the U-shaped supports extend into the oil tank through through holes in the top plate. The support rods are fixedly connected to the oil hopper via a crossbar, which connects the U-shaped supports of the two hydraulic cylinders into a single unit. The two U-shaped supports are located on opposite sides of the oil hopper. When both hydraulic cylinders extend simultaneously, the oil hopper moves upward, and the opening at the top of the oil hopper can seal tightly against the inside of the top plate of the oil tank. The top plate directly above the opening of the oil hopper... The tank is equipped with a high-pressure air inlet pipe and an oil outlet pipe. The lower end of the high-pressure air inlet pipe is higher than the lower end of the oil outlet pipe. The lower end of the oil hopper is wedge-shaped, and the two inclined surfaces of the wedge correspond to two U-shaped supports. A vertical fixing component is installed on the top plate of the oil tank on the outside of the U-shaped support. The side of the vertical fixing component closest to the U-shaped support is hinged to the extrusion plate corresponding to the inclined surface through a rotating shaft. The width of the extrusion plate is less than the distance between the two rods of the U-shaped support. Gears are installed at both ends of the rotating shaft. The gears mesh with the racks on the two rods of the corresponding U-shaped support. When the rack moves upward, the extrusion plate flips up, eventually achieving contact with the inclined surface of the wedge. When the rack moves downward, the extrusion plate flips down, achieving separation from the inclined surface of the wedge.

[0006] By adopting the above technical solution, an automatic oil filling device for a refrigeration compressor is provided. The oil filling device has a pressing plate structure on each side of the oil hopper, which moves in conjunction with the oil hopper. The pressing plate structure actively opens during the downward movement of the oil hopper and actively closes during the upward movement of the oil hopper, lifting the bottom of the oil hopper and effectively ensuring the sealing performance after the oil hopper is pressed against the top plate of the oil tank.

[0007] A further feature of the present invention is that: two high-pressure air inlet pipes are provided on the top plate of the fuel tank. Each high-pressure air inlet pipe first enters the bottom of the vertical fixing member, then enters the top of the vertical fixing member from the bottom of the vertical fixing member, and then enters the inner side of the top plate of the fuel tank from the top of the vertical fixing member. An upper plate and a lower plate are hinged to the side wall of the vertical fixing member below the hinge of the extrusion plate via a pivot. The lower edge of the upper plate is folded inward to prevent the swing edge of the lower plate from sliding down. The vertical fixing member below the pivot of the lower plate hinge is provided with a mechanism for pushing the lower plate upward. The upper plate is wider than the lower plate, and vertical plates are provided on both sides of the upper plate. The upper plate, lower plate, and vertical plates form an independent space of variable size. A side hole is provided on the vertical fixing member between the hinge shaft of the upper and lower plates. An air bladder is provided in the side hole. The air bladder is connected to the high-pressure air inlet pipe at the lower end of the vertical fixing member. The gas between the air bladder and the high-pressure air inlet pipe can flow automatically. After the air bladder is inflated, it can push the upper plate upward and the lower plate downward, and finally push the extrusion plate upward through the upper plate.

[0008] By adopting the technical scheme, the buckle assembly composed of the upper flap and the lower flap is arranged below the extrusion plate, the buckle assembly is supported by the air bag filled with high-pressure gas, the close adhesion of the oil tank and the top plate of the oil tank when the high-pressure oil liquid in the oil tank is pushed can be ensured, and the precise oil injection can be further ensured.

[0009] The inner side wall of the top plate of the oil tank is provided with a sealing plate corresponding to the opening of the oil tank.

[0010] By adopting the technical scheme, the sealing plate is additionally arranged on the inner side of the top plate of the oil tank, and the sealing performance after the oil tank is adhesively connected with the top plate of the oil tank is further ensured.

[0011] The two high-pressure gas inlet pipes are provided with high-pressure gas from the same high-pressure gas source.

[0012] By adopting the technical scheme, one gas source is used to supply gas to the two high-pressure gas inlet pipes, and the control mode of the gas supply pipeline is simplified.

[0013] The top of the oil tank is further provided with a refueling pipe.

[0014] The side wall of the oil tank is provided with a transparent observation port for observing the oil quantity.

[0015] By adopting the technical scheme, the transparent observation port is arranged on the side wall of the oil tank, the oil quantity in the oil tank can be observed in real time, and the oil liquid can be supplemented in time.

[0016] The main beneficial effects of the present application are:

[0017] 1. The oil injection device is provided with a pressing plate structure on both sides of the oil tank, which is linked with the oil tank, and is actively opened during the downward movement of the oil tank and is actively closed during the upward movement of the oil tank, so that the bottom of the oil tank is lifted, and the sealing performance after the oil tank is pressed against the top plate of the oil tank can be effectively ensured.

[0018] 2. The oil injection device is provided with a buckle assembly composed of an upper flap and a lower flap below the extrusion plate, the buckle assembly is supported by the air bag filled with high-pressure gas, the close adhesion of the oil tank and the top plate of the oil tank when the high-pressure oil liquid in the oil tank is pushed can be ensured, and the precise oil injection can be further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a structural schematic diagram of the present application;

[0021] Figure 2 is Figure 1 is an enlarged view of A in the figure;

[0022] Figure 3 is a schematic diagram of the outer structure of the internal structure of the present application;

[0023] Figure 4 is Figure 3 is a structural schematic diagram of B in the figure.

[0024] In the figure, 1, oil tank; 2, high-pressure air inlet pipe; 3, oil outlet pipe; 4, hydraulic cylinder; 5, U-shaped support; 6, oil filling pipe; 7, sealing plate; 8, oil tank; 9, rack; 10, cross bar; 11, vertical fixing piece; 12, gear; 13, vertical plate; 14, extrusion plate; 15, upper flange plate; 16, lower flange plate; 17, torsion spring; 18, air bag; 19, oil. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Example 1:

[0027] As Figures 1 to 4As shown, an automatic oil injection device of a refrigeration compressor comprises an oil tank 1, an oil tank 1 top plate inside is provided with an oil tank 8, the vertical movement of the oil tank 8 in the oil tank 1 is driven by two hydraulic cylinders 4 outside the oil tank 1 top plate through respective U-shaped supports 5, the U-shaped supports 5 are arranged in the form of reverse buckling at the top end of the telescopic rod of the hydraulic cylinder 4, the two supporting rods of the U-shaped support 5 extend into the inside of the oil tank 1 through the through hole on the oil tank 1 top plate, the supporting rods are fixedly connected with the oil tank 8 through the cross bar 10, the cross bar 10 connects the U-shaped supports 5 of the two hydraulic cylinders 4 into a whole, the two U-shaped supports 5 are respectively located on both sides of the oil tank 8, when the two hydraulic cylinders 4 are simultaneously elongated, the oil tank 8 moves upward, the opening at the top of the oil tank 8 can be tightly fitted with the inside of the oil tank 1 top plate, the high-pressure gas inlet pipe 2 and the oil outlet pipe 3 are arranged on the top plate directly above the opening of the oil tank 8, the lower end of the high-pressure gas inlet pipe 2 is higher than the lower end of the oil outlet pipe 3, the lower end of the oil tank 8 is wedge-shaped, the two inclined surfaces of the wedge-shaped structure correspond to the two U-shaped supports 5 respectively, vertical fixing members 11 are arranged on the oil tank 1 top plate outside the U-shaped supports 5, the side of the vertical fixing member 11 close to the U-shaped support 5 is hinged with the corresponding extrusion plate 14 through the pivot, the width of the extrusion plate 14 is less than the distance between the two supporting rods of the U-shaped support 5, the pivot is provided with a gear 12 at both ends, the gear 12 is respectively engaged with the rack 9 on the two supporting rods of the corresponding U-shaped support 5, when the rack 9 moves upward, the extrusion plate 14 will be turned up, and finally realizes the tight fitting with the inclined surface of the wedge-shaped structure, when the rack 9 moves downward, the extrusion plate 14 will be turned down, and realizes the separation with the inclined surface of the wedge-shaped structure.

[0028] Two high-pressure gas inlet pipes 2 are arranged on the top plate of the oil tank 1, each high-pressure gas inlet pipe 2 first enters the bottom of the vertical fixing member 11, then enters the top of the vertical fixing member 11 from the bottom of the vertical fixing member 11, and then enters the inside of the oil tank 1 top plate from the top of the vertical fixing member 11, the side wall of the vertical fixing member 11 below the hinge of the extrusion plate 14 is hinged with an upper flap 15 and a lower flap 16 through a pivot, the lower edge of the upper flap 15 is inwardly folded to block the downward sliding of the swing edge of the lower flap 16, the vertical fixing member 11 above the hinge of the lower flap 16 is provided with a torsion spring 17 for pushing the lower flap 16 upward, the width of the upper flap 15 is greater than the width of the lower flap 16, vertical plates 19 are arranged on both sides of the upper flap 15, the upper flap 15, the lower flap 16 and the vertical plates 19 enclose an independent space with variable size, a side hole is arranged on the vertical fixing member 11 between the hinge of the upper flap 15 and the lower flap 16, an air bag 18 is arranged in the side hole, the air bag 18 is connected with the high-pressure gas inlet pipe 2 at the lower end of the vertical fixing member 11, the gas between the air bag 18 and the high-pressure gas inlet pipe 2 can automatically flow, after the air bag 18 is inflated, the upper flap 15 can be pushed upward and the lower flap 16 can be pushed downward, and finally the upper flap 15 realizes the upward pushing of the extrusion plate 14.

[0029] The inner side wall of the top plate of the oil tank 1 is provided with a sealing plate 7 corresponding to the opening of the oil tank 8, and two high-pressure gas inlet pipes 2 are provided with high-pressure gas from the same high-pressure gas source. The top of the oil tank 1 is also provided with a refueling pipe 6, and the side wall of the oil tank 1 is provided with a transparent observation port for observing the oil level.

[0030] Principle of use: the hydraulic cylinder 4 controls the downward movement of the oil tank 8 (at this time, the high-pressure gas inlet pipe 2 is not connected to the high-pressure gas, and the air bag 18 is also deflated, the lower flap 16 is turned up under the action of the torsion spring 17, and the upper flap 15 is turned down under the action of gravity without the support of the lower flap 16, and the upper flap 16 no longer prevents the downward turning of the pressing plate 14), the pressing plate 14 is turned down under the action of the rack 9 and the gear 12 to provide a channel for the downward movement of the oil tank 8, and the oil tank 8 is moved below the oil surface of the oil 19. After being filled with oil, the hydraulic cylinder 4 moves the oil tank 8 upward, and during the upward movement, the pressing plate 14 is turned up under the action of the rack 9 and the gear 12 until the pressing plate 14 is tightly attached to the inclined surface at the lower end of the oil tank 8. At this time, the opening of the oil tank 8 is tightly combined with the sealing plate 7, and the lower end of the oil outlet pipe 3 is immersed below the oil surface in the oil tank 8. When refueling, open the valve on the high-pressure gas inlet pipe 2, and the high-pressure gas first fills the air bag 18. The air bag 18 filled with high-pressure gas pushes the upper flap 15 up and the lower flap 16 down. The upper flap 15 supports the pressing plate 14 through the combined action of the air bag 18 and the lower flap 16, so that the oil tank 8 is tightly attached to the sealing plate 7, and finally the high-pressure gas enters the oil tank 8 for refueling. After refueling is completed, the high-pressure gas in the oil tank 8 is discharged, and the gas in the air bag 18 is also discharged from the oil tank 8, and the deflated air bag 18 no longer supports the upper flap 15 and the lower flap 16, and the upper flap 15 and the lower flap 16 return to the original state.

Claims

1. An automatic oiling device for a refrigeration compressor, characterized in that: The oil tank (1) is provided with an oil tank (8) on the inner side of the top plate, the vertical movement of the oil tank (1) is driven by two hydraulic cylinders (4) on the outer side of the top plate of the oil tank (1) through respective U-shaped supports (5), the U-shaped supports (5) are arranged in the form of reverse buckling on the top end of the telescopic rod of the hydraulic cylinder (4), the two supporting rods of the U-shaped support (5) extend into the inside of the oil tank (1) through the through hole on the top plate of the oil tank (1), the supporting rods are fixedly connected with the oil tank (8) through the cross rod (10), the cross rod (10) connects the U-shaped supports (5) of the two hydraulic cylinders (4) into a whole, the two U-shaped supports (5) are respectively located on the two sides of the oil tank (8), when the two hydraulic cylinders (4) are simultaneously elongated, the oil tank (8) moves upward, the opening on the top of the oil tank (8) can be sealingly attached to the inner side of the top plate of the oil tank (1), the high-pressure gas inlet pipe (2) and the oil outlet pipe (3) are arranged on the top plate directly above the opening of the oil tank (8), the lower end of the high-pressure gas inlet pipe (2) is higher than the lower end of the oil outlet pipe (3), the lower end of the oil tank (8) is wedge-shaped, the two inclined surfaces of the wedge-shaped correspond to the two U-shaped supports (5) respectively, the vertical fixing member (11) is arranged on the top plate of the oil tank (1) on the outer side of the U-shaped support (5), the side of the vertical fixing member (11) close to the U-shaped support (5) is hinged to the corresponding extrusion plate (14) through the pivot, the width of the extrusion plate (14) is smaller than the distance between the two supporting rods of the U-shaped support (5), the gears (12) are arranged on both ends of the pivot, the gears (12) are respectively engaged with the racks (9) on the two supporting rods of the corresponding U-shaped support (5), when the rack (9) moves upward, the extrusion plate (14) will be turned up, and finally the extrusion plate (14) is attached to the inclined surface of the wedge-shaped, when the rack (9) moves downward, the extrusion plate (14) will be turned down, and the extrusion plate (14) is separated from the inclined surface of the wedge-shaped. The top plate of the oil tank (1) is provided with two high-pressure air inlet pipes (2), each of which enters the bottom of the vertical fixing part (11), then enters the top of the vertical fixing part (11) from the bottom of the vertical fixing part (11), and then enters the inside of the top plate of the oil tank (1) from the top of the vertical fixing part (11). The side wall of the vertical fixing part (11) below the hinge of the extrusion plate (14) is hingedly connected with an upper flap (15) and a lower flap (16) through a rotating shaft, the lower edge of the upper flap (15) is inwardly folded to block the downward sliding of the swing edge of the lower flap (16), the vertical fixing part (11) below the hinge of the lower flap (16) is provided with a torsion spring (17) for pushing the lower flap (16) upward, the width of the upper flap (15) is greater than that of the lower flap (16), the two sides of the upper flap (15) are provided with vertical plates (13), the upper flap (15), the lower flap (16) and the vertical plates (13) form an independent space with variable size, the vertical fixing part (11) between the hinges of the upper flap (15) and the lower flap (16) is provided with a side hole, the side hole is provided with an air bag (18), the air bag (18) is connected with the high-pressure air inlet pipe (2) at the lower end of the vertical fixing part (11), the gas between the air bag (18) and the high-pressure air inlet pipe (2) can flow automatically, after the air bag (18) is inflated, the upper flap (15) is pushed upward and the lower flap (16) is pushed downward, and finally the upper flap (15) pushes the extrusion plate (14) upward.

2. The automatic oiling device of a refrigeration compressor according to claim 1, characterized in that: The inside wall of the top plate of the oil tank (1) is provided with a sealing plate (7) corresponding to the opening of the oil bucket (8).

3. The automatic oiling device of a refrigeration compressor according to claim 2, characterized in that: The two high-pressure air inlet pipes (2) are provided with high-pressure gas from the same high-pressure gas source.

4. The automatic oiling device of a refrigeration compressor according to claim 3, characterized in that: The top of the oil tank (1) is also provided with a refueling pipe (6).

5. The automatic oiling device of a refrigeration compressor according to claim 4, characterized in that: The side wall of the oil tank (1) is provided with a transparent observation port for observing the oil quantity.

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