Horizontal oil gas barrel with built-in oil filter

By incorporating a horizontal oil-gas tank with an internal oil filter, the oil filter element is combined with the coarse separator tank, simplifying the oil circuit layout and solving the problems of large overall size and high energy consumption in small and medium-sized oil-injected screw compressors, thus achieving a more compact structure and higher energy efficiency.

CN223754248UActive Publication Date: 2026-01-02NANTONG HONGXING AIR COMPRESSOR PARTS MFG CO LTD
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Patent Information

Application Number
CN202520436722.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2026-01-02
Estimated Expiration
2035-03-13

AI Technical Summary

Technical Problem

The existing oil-gas separator design of small and medium-sized oil-injected screw compressors leads to an increase in the overall size of the machine, a complex oil circuit layout with many potential leakage points, and an external oil filter, which increases the overall cost and energy consumption.

Method used

Design a horizontal oil-gas tank with built-in oil filter. The oil filter element is placed between the coarse separator and the oil filter cover. Utilize the internal space of the coarse separator. The oil suction pipe is directly connected to the oil filter element, simplifying the oil circuit, reducing pipe joints, and integrating oil filtration and cooling functions into one unit.

Benefits of technology

It reduces the overall size of the machine, lowers oil pressure loss, improves energy efficiency, avoids environmental pollution from oil leaks, and simplifies the maintenance process.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223754248U_ABST
Patent Text Reader

Abstract

The utility model relates to a horizontal oil gas barrel with a built-in oil filter. The horizontal oil gas barrel comprises a barrel body, a coarse separation barrel is arranged on the barrel body, an oil filter cover is arranged on the top of the coarse separation barrel, an oil filter outlet is formed in the side portion of the coarse separation barrel, an oil filter element is arranged between the coarse separation barrel and the oil filter cover, and the coarse separation barrel is communicated with the inside of the barrel body. The space occupied by the oil filter is reduced, the size of the whole machine is further reduced, and the layout is more compact.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a built-in oil filter horizontal oil-gas barrel for small and medium-sized oil-injected screw air compressors. BACKGROUND

[0002] At present, the oil-injected screw machines of 7.5KW to 37KW in the market are small and medium-sized oil-injected screw machines, in order to reduce the cost and the overall size, an integrated design is usually adopted, the overall machine is directly installed to the oil-gas barrel, and the compressor exhaust port channel is arranged in the oil-gas barrel. The existing integrated oil-gas barrel is provided with a rough separation barrel, the separated lubricating oil is connected to the external oil filter through a pipeline, and then enters the head after filtration and cooling, the pipeline layout is complex, there are many potential leakage points, and the overall size of the compressor is increased due to the separate external oil filter. SUMMARY

[0003] The utility model discloses a built-in oil filter horizontal oil-gas barrel to overcome the above shortcomings.

[0004] The utility model discloses a built-in oil filter horizontal oil-gas barrel, including the barrel body, be equipped with the rough separation barrel on the barrel body, the top of rough separation barrel is equipped with the oil filter cover, the side of rough separation barrel is equipped with the oil filter rear export, be equipped with the oil filter core between rough separation barrel and oil filter cover, and rough separation barrel communicates with the barrel body.

[0005] The utility model discloses a built-in oil filter horizontal oil-gas barrel further improves in that the rough separation barrel bottom is equipped with the oil suction pipe, and the oil suction pipe is arranged in the barrel body.

[0006] The utility model discloses a built-in oil filter horizontal oil-gas barrel further improves in that the rough separation barrel and the barrel body communicate through the external oil suction pipe.

[0007] The utility model discloses a built-in oil filter horizontal oil-gas barrel further improves in that the barrel body is also equipped with the fine separation barrel, and the side of fine separation barrel is equipped with the secondary separation compressed air export.

[0008] The utility model discloses a built-in oil filter horizontal oil-gas barrel further improves in that the barrel body is equipped with the exhaust pipe, and the exhaust pipe is connected with the head export.

[0009] Compared with the prior art, the utility model discloses a built-in oil filter horizontal oil-gas barrel has the advantages of:

[0010] 1, the oil filter core is arranged between the rough separation barrel and the oil filter cover, the space in the rough separation barrel is borrowed, and the overall size is reduced.

[0011] 2, the oil liquid only needs to pass through the oil suction pipe and then pass through the oil filter core to be filtered and then be used again, and does not need to pass through other pipeline joints, so that the oil circuit pressure loss is reduced, and the overall machine is more energy-saving.

[0012] 3. During subsequent maintenance and repair, any leaked oil during the entire disassembly and assembly process will be collected inside the coarse separator, preventing oil contamination of the machine or the environment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of the oil suction pipe;

[0014] Figure 2 for Figure 1 Internal structure diagram;

[0015] Figure 3 for Figure 2 Schematic diagram of the structure of AA;

[0016] Figure 4 This is a schematic diagram of the internal structure of an externally mounted oil suction pipe;

[0017] The following numbers are labeled in the diagram: 1-Barrel body, 2-Coarse separation barrel, 3-Fine separation barrel, 3-1-Compressed air outlet after secondary separation, 4-Oil filter cover, 5-Oil filter outlet, 6-Oil filter element, 7-Oil suction pipe, 8-Exhaust pipe, 9-Compressed air, 10-Lubricating oil, 11-Mixture of compressed air and lubricating oil. Detailed Implementation

[0018] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0019] The figure illustrates a specific embodiment of the horizontal oil-gas tank with built-in oil filter of this utility model: it includes a tank body 1, a coarse separator 2 on the tank body 1, an oil filter cover 4 on the top of the coarse separator 2, an oil filter outlet 5 on the side of the coarse separator 2, and an oil filter element 6 between the coarse separator 2 and the oil filter cover 4. This utilizes the internal space of the coarse separator 2, reducing the overall size of the machine; the coarse separator 2 is connected to the inside of the tank body 1. Figures 1-3 As shown, it can be divided into two types: one with the oil suction pipe 7 built in, that is, the bottom of the coarse separator 2 is equipped with an oil suction pipe 7, which is located inside the body 1; or, as... Figure 4 As shown, the oil suction pipe 7 is externally mounted, meaning that the coarse separator 2 and the barrel body 1 are connected by the externally mounted oil suction pipe 7. The barrel body 1 is also equipped with a fine separator 3, and the side of the fine separator 3 is provided with a compressed air outlet 3-1 after secondary separation. The barrel body 1 is equipped with an exhaust pipe 8, which is connected to the outlet of the machine head.

[0020] After the oil and gas pass through the outer wall of the coarse separator 2 and undergo cyclone centrifugal separation, the separated oil moves downward and the separated gas moves upward, thus achieving oil-gas separation. The separated oil enters the interior of the coarse separator 2 through the oil suction pipe 7, and after being filtered by the oil filter element 6, it is discharged from the oil filter outlet 5 through the channel of the oil filter cover 4.

[0021] Air compressor is to improve the gas pressure by compression, for example, the conventional 8bar oil injection screw air compressor, the air inlet of the head suction is the atmosphere, the gas at the outlet of the head is compressed to 8bar, in this compression process, the compressor head needs oil to lubricate, seal, cool, etc. during operation, and the oil needs to be recycled, that is, the air inlet of the head not only sucks gas, but also oil, but the exhaust port of the compressor requires no oil or only a small amount of oil. The coarse separation and fine separation in the integrated oil-gas bucket are used to separate the oil-gas mixture at the outlet of the head. The coarse separation utilizes high-speed centrifugal separation, and the fine separation uses oil-absorbing materials to remove oil droplets in the gas after coarse separation by adsorption. The fine oil is connected to the head inlet through other pipelines. The oil after coarse separation enters the oil-gas bucket, passes through the oil suction pipe, enters the oil filter element for filtration, then passes through the pipeline, and passes through the cooler when the temperature is high, and then enters the head suction port for recycling.

[0022] In the utility model, the oil only needs to pass through the oil suction pipe and then pass through the oil filter element for filtration before being used again, and does not need to pass through other pipeline joints, thereby reducing the pressure loss of the oil circuit and making the whole machine more energy-saving. During the disassembly and assembly of the oil filter element during subsequent maintenance, the leaked oil is collected in the coarse separation bucket, and the oil does not pollute the whole machine or the environment. The utility model reduces the space occupied by the oil filter, further reduces the size of the whole machine, and has a more compact layout.

[0023] The applicant further declares that the implementation method and device structure of the utility model are illustrated by the above embodiments, but the utility model is not limited to the above embodiments, that is, it does not mean that the utility model must rely on the above method and structure to be implemented. Those skilled in the art should understand that any improvement on the utility model, equivalent replacement of the implementation method selected by the utility model, addition of steps, selection of specific modes, etc. fall within the protection scope and disclosed scope of the utility model.

[0024] The utility model is not limited to the above embodiments, and all modes that use similar structures and methods to achieve the purpose of the utility model are within the protection scope of the utility model.

Claims

1. A horizontal oil-gas tank with built-in oil filter, comprising a tank body (1), characterized in that: The barrel body (1) is provided with a rough classification barrel (2), the top of the rough classification barrel (2) is provided with an oil filter cover (4), the side of the rough classification barrel (2) is provided with an oil filter outlet (5), the rough classification barrel (2) and the oil filter cover (4) are provided with an oil filter core (6), and the rough classification barrel (2) is communicated with the barrel body (1).

2. The horizontal oil-gas bucket with built-in oil filter according to claim 1, characterized in that: The bottom of the rough classification barrel (2) is provided with an oil suction pipe (7), and the oil suction pipe (7) is arranged in the barrel body (1).

3. The horizontal oil-gas bucket with built-in oil filter according to claim 1, characterized in that: The rough classification barrel (2) and the barrel body (1) are communicated through the externally-arranged oil suction pipe (7).

4. The horizontal oil-gas bucket with built-in oil filter according to claim 1, characterized in that: The barrel body (1) is further provided with a fine classification barrel (3), and the side of the fine classification barrel (3) is provided with a secondary separation compressed air outlet (3-1).

5. The horizontal oil-gas bucket with built-in oil filter according to claim 1, characterized in that: The barrel body (1) is provided with an exhaust pipe (8), and the exhaust pipe (8) is connected with a machine head outlet.