Air compressor with lubricating oil backflow buffering structure capable of preventing machine head from being damaged

Abstract

The utility model provides an air compressor with a lubricating oil backflow buffering structure capable of preventing a machine head from being damaged. The air compressor comprises a buffering oil barrel. The buffering oil barrel is arranged between the machine head and the oil gas barrel and provided with a containing space, a first oil pipe and a second oil pipe, and the first oil pipe and the second oil pipe are communicated with the containing space and the machine head and the oil gas barrel. The frame structure has a base. After the air compressor is shut down, lubricating oil flows into the buffering oil barrel from the machine head, a part of lubricating oil is stored in the closed containing space, and redundant lubricating oil flows back to the oil gas barrel through the second oil pipe; and when the air compressor is started again, the lubricating oil directly flows into the machine head from the buffering oil barrel, so that the lubricating oil can quickly flow into the machine head. According to the air compressor with the buffering structure, part of lubricating oil flows into the buffering oil barrel to be stored after the air compressor is shut down, when the air compressor is started again, the lubricating oil is directly input into the machine head from the buffering oil barrel and does not need to reach the machine head from an oil gas barrel through a long pipeline, and therefore the speed of the lubricating oil flowing into the machine head is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an air compressor with a lubricating oil reflux buffer structure for preventing machine head damage. Background Art

[0002] An air compressor is a device that uses an electric motor to drive a compressor to compress air into high-pressure gas. The air compressor is mainly composed of a filter, an electric motor, a compressor, a cooling system, a control system, a separator, and an air storage tank. When the air compressor is working, air enters the electric motor through the air intake valve, and the air is compressed into high-pressure gas through the compressor in the electric motor. During the compression process, the air mixes with the cooling lubricating oil in the electric motor to form a high-pressure oil-gas mixture. The oil-gas mixture enters the separator through the electric motor. The separator is used to separate the oil-gas mixture. The separated gas enters the air storage tank after being cooled by the cooler.

[0003] Chinese patent document CN104214075A discloses an integrated variable frequency air compressor device, including a base, on which an air compressor body and a frequency converter are arranged, the frequency converter part is embedded in the air compressor body, an air compressor electronic control component is also arranged on the base, and an air compressor heat dissipation component is also arranged on the air compressor body; the frequency converter includes a frequency converter control component and a frequency converter heat dissipation component, the frequency converter control component is embedded in the air compressor electronic control component, and the frequency converter heat dissipation component is connected to the air compressor body.

[0004] The defect of the technical solution disclosed in the above patent document is that when the air compressor is shut down, the lubricating oil will flow back, resulting in a decrease in the amount of lubricating oil in the machine head. When the equipment is started again, it takes a certain amount of time for the lubricating oil to flow from the inside of the oil and gas barrel to the inside of the machine head. During this period, the machine head may be running but the lubricating oil has not yet entered the machine head, which will cause hard wear and damage inside the machine head, thereby shortening the life of the machine head.

[0005] Therefore, how to design an air compressor that can slow down or stop the reflux of lubricating oil and flow faster into the machine head with a lubricating oil reflux buffer structure to prevent damage to the machine head is a technical problem that has not yet been solved in the prior art. Utility Model Content

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the technical defect that the lubricating oil will flow back after the air compressor is shut down in the prior art, and the amount of lubricating oil in the machine head will be reduced. When the equipment is started again, the circulation of the lubricating oil takes time, and the machine head may be running but the lubricating oil has not yet entered the machine head, resulting in hard wear damage inside the machine head, and further shortening the life of the machine head. The present invention thus provides an air compressor with a lubricating oil reflux buffer structure that can slow down the reflux speed of the lubricating oil or prevent it from flowing back, and flow faster into the machine head to prevent damage to the machine head.

[0007] To this end, the utility model provides an air compressor with a lubricating oil reflux buffer structure to prevent damage to the machine head, comprising: a motor, a machine head, an oil and gas barrel, an oil and gas separator, an oil filter, a heat exchange device and an air storage tank;

[0008] It also includes a buffer oil barrel, which is arranged between the machine head and the oil and gas barrel and has a closed accommodation space, and also includes a first oil pipe and a second oil pipe connected to the closed accommodation space, the other end of the first oil pipe is connected to the machine head, and the other end of the second oil pipe is connected to the oil and gas barrel, and the position of the opening of the first oil pipe connected to the buffer oil barrel is lower than the position of the opening of the second oil pipe connected to the buffer oil barrel; the length of the first oil pipe is less than the length of the pipe directly connected to the oil and gas barrel from the machine head;

[0009] The air compressor also includes a frame structure with a base; the motor, machine head, buffer oil barrel, oil and gas barrel, oil and gas separator, oil filter, heat exchange device and gas storage tank are all fixedly installed on the base.

[0010] As a preferred solution, one end of the first oil pipe extends into a position close to the bottom of the buffer oil barrel, and one end of the second oil pipe extends into a position close to the top of the buffer oil barrel.

[0011] As a preferred solution, the buffer oil barrel is arranged on one side of the motor and the gas storage tank, and is located on one side of the middle position of the motor and the gas storage tank.

[0012] As a preferred solution, the frame structure includes: vertical beams arranged at the four corners of the base; a fixed beam arranged in the middle of the two long sides of the base; and two supporting beams arranged on the base close to the gas tank and located between the vertical beams and the fixed beams, and the height of the support beams is less than the height of the vertical beams and the fixed beams.

[0013] As a preferred solution, the frame structure further comprises: at least two bearing members arranged on the top surface of the base for bearing the oil and gas barrels, wherein the middle portion of the bearing member is provided with a groove matching with the bottom of the oil and gas barrel;

[0014] It also includes at least four first fixing members and at least four second fixing members arranged on the top surface of the base for fixing the motor and the gas tank; the bottom of the motor and the bottom of the gas tank are screwed to the first fixing members and the second fixing members.

[0015] As a preferred solution, the gas storage tank is arranged on the right side of the motor.

[0016] As a preferred solution, the oil and gas barrel is arranged at the upper left position of the buffer oil barrel.

[0017] As a preferred solution, it also includes a control box, which is arranged in a first protection box. The first protection box is located between the vertical beam and the fixed beam on the side close to the oil and gas barrel, and a protection door is installed between the vertical beam and the fixed beam.

[0018] As a preferred solution, there are two heat exchange devices, which are arranged in a second protection box. The second protection box is arranged on the top surfaces of the support beam and the first protection box. The top surface of the second protection box is provided with a breathable mesh panel.

[0019] The technical solution provided by the utility model has the following advantages:

[0020] 1. The utility model provides an air compressor with a lubricating oil reflux buffer structure for preventing damage to the machine head, comprising a buffer oil barrel; the buffer oil barrel is arranged between the machine head and the oil and gas barrel, and has a closed accommodation space, and a first oil pipe and a second oil pipe connected to the closed accommodation space, the other end of the first oil pipe is connected to the machine head, and the other end of the second oil pipe is connected to the oil and gas barrel, and the position of the opening of the first oil pipe connected to the buffer oil barrel is lower than the position of the opening of the second oil pipe connected to the buffer oil barrel; the length of the first oil pipe is shorter than the length of the pipeline directly connecting the machine head with the oil and gas barrel; the frame structure of the air compressor has a base, and the motor, machine head, buffer oil barrel, oil and gas barrel, oil and gas separator, oil filter, heat exchange device and gas storage tank are all fixedly installed on the base.

[0021] When the air compressor starts working, the lubricating oil flows from the oil and gas barrel through the second oil pipe into the enclosed containing space of the buffer oil barrel, and then flows from the enclosed containing space into the machine head through the first oil pipe; when the air compressor stops, the lubricating oil flows from the machine head through the first oil pipe into the enclosed containing space of the buffer oil barrel, a part of it is stored in the enclosed containing space, and the excess lubricating oil flows back to the oil and gas barrel through the second oil pipe; when the air compressor starts again, the lubricating oil flows directly from the enclosed containing space of the buffer oil barrel through the first oil pipe into the machine head, so that the lubricating oil can flow into the machine head faster.

[0022] That is to say, in the air compressor of the utility model with the lubricating oil reflux buffer structure for preventing damage to the machine head, when the lubricating oil flows from the machine head back to the oil and gas barrel after the air compressor is shut down, a part of the lubricating oil will flow into the enclosed containing space of the buffer oil barrel for temporary storage. When the air compressor is started again, the lubricating oil can be directly input into the machine head from the enclosed containing space of the buffer oil barrel without having to pass through a longer pipeline from the oil and gas barrel to reach the machine head. Therefore, the speed at which the lubricating oil flows into the machine head becomes faster, which can avoid the situation that the machine head has been running but the lubricating oil has not yet entered the machine head, thereby reducing the wear of the machine head and extending the service life.

[0023] 2. The utility model provides an air compressor with a lubricating oil reflux buffer structure for preventing damage to the machine head. One end of the first oil pipe extends into the buffer oil barrel near the bottom. When the amount of lubricating oil in the buffer oil barrel is small, the first oil pipe can also deliver the lubricating oil to the machine head. One end of the second oil pipe extends into the buffer oil barrel near the top, so that the lubricating oil can be temporarily stored in the buffer oil barrel, so that it can flow back to the oil and gas barrel only when the storage amount in the buffer oil barrel reaches a certain requirement.

[0024] 3. The utility model provides an air compressor with a lubricating oil reflux buffer structure to prevent damage to the machine head. The control box is arranged in a first protective box. The first protective box is equipped with a protective door. The first protective box and the protective door can protect the control box to prevent the air compressor from being unable to work normally due to damage to the control box.

[0025] 4. The utility model provides an air compressor with a lubricating oil reflux buffer structure for preventing damage to the machine head. The air compressor has two heat exchange devices, which can make the exchange of cold and hot air faster, have stronger heat dissipation, and are conducive to heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the prior art or the specific implementation methods of the present utility model, the drawings used in the description of the prior art or the specific implementation methods are briefly introduced below.

[0027] Figure 1 The utility model is a schematic diagram of the overall structure of an air compressor with a lubricating oil reflux buffer structure for preventing damage to the machine head.

[0028] Figure 2 yes Figure 1 Another stereoscopic view of .

[0029] Figure 3 Yes Figure 2 A three-dimensional image with the protective door removed.

[0030] Figure 4 yes Figure 1 Another stereoscopic view of .

[0031] Figure 5 yes Figure 4 sectional view of .

[0032] Figure 6 yes Figure 1 Another stereoscopic view of .

[0033] Figure numerals: 1. Motor; 2. Machine head; 3. Buffer oil drum; 31. First oil pipe; 32. Second oil pipe; 4. Oil-gas drum; 5. Oil-gas separator; 6. Oil filter; 7. Heat exchange device; 8. Gas storage tank; 9. Base; 91. Vertical beam; 92. Fixed beam; 93. Support beam; 94. Bearing member; 95. First fixing member; 96. Second fixing member; 10. Control box; 101. First protective box; 102. Protective door; 103. Second protective box; 104. Breathable mesh. DETAILED DESCRIPTION

[0034] In order to make those skilled in the art better understand the present solution, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0035] It should be noted that the terms "first", "second", etc. in the claims and description of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not limited to those steps or units clearly listed, but may also include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

[0037] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Example

[0038] This embodiment provides an air compressor with a lubricating oil backflow buffer structure to prevent damage to the machine head, such as Figure 1-6 As shown, it includes: a motor 1, a machine head 2, a buffer oil barrel 3, an oil-gas barrel 4, an oil-gas separator 5, an oil filter 6, a heat exchange device 7, an air storage tank 8 and a frame structure; wherein the buffer oil barrel 3 is arranged between the machine head 2 and the oil-gas barrel 4, and has a closed accommodating space, and also includes a first oil pipe 31 and a second oil pipe 32 connected to the closed accommodating space, the other end of the first oil pipe 31 is connected to the machine head 2, and the other end of the second oil pipe 32 is connected to the oil-gas barrel 4, and the position of the opening of the first oil pipe 31 connected to the buffer oil barrel 3 is lower than the position of the opening of the second oil pipe 32 connected to the buffer oil barrel 3; the length of the first oil pipe 31 is less than the length of the pipeline directly connecting the machine head 2 with the oil-gas barrel 4; it also includes a frame structure with a base 9; the motor 1, machine head 2, buffer oil barrel 3, oil-gas barrel 4, oil-gas separator 5, oil filter 6, heat exchange device 7 and air storage tank 8 are all fixedly mounted on the base 9.

[0039] When the air compressor starts working, the lubricating oil flows from the oil and gas barrel 4 through the second oil pipe 32 into the enclosed containing space of the buffer oil barrel 3, and then flows from the enclosed containing space into the machine head 2 through the first oil pipe 31; when the air compressor stops, the lubricating oil flows from the machine head 2 through the first oil pipe 31 into the enclosed containing space of the buffer oil barrel 3, a part of it is stored in the enclosed containing space, and the excess lubricating oil flows back to the oil and gas barrel 4 through the second oil pipe 32; when the air compressor starts again, the lubricating oil flows directly from the enclosed containing space of the buffer oil barrel 3 through the first oil pipe 31 into the machine head 2, so that the lubricating oil can flow into the machine head 2 faster.

[0040] That is to say, in the air compressor of this embodiment with the lubricating oil reflux buffer structure for preventing damage to the machine head, when the lubricating oil flows back from the machine head 2 to the oil and gas barrel 4 after the air compressor is shut down, a part of the lubricating oil will flow into the enclosed containing space of the buffer oil barrel 3 for temporary storage. When the air compressor is started again, the lubricating oil can be directly input into the machine head 2 from the enclosed containing space of the buffer oil barrel 3 without having to pass through a longer pipeline from the oil and gas barrel 4 to reach the machine head 2. Therefore, the speed at which the lubricating oil flows into the machine head 2 becomes faster, which can avoid the situation where the machine head 2 is already running but the lubricating oil has not yet entered the machine head 2, thereby reducing the wear of the machine head 2 and extending its service life.

[0041] One end of the first oil pipe 31 extends to a position near the bottom of the buffer oil barrel 3. When the amount of lubricating oil in the buffer oil barrel 3 is small, the first oil pipe 31 can also deliver the lubricating oil to the machine head 2; one end of the second oil pipe 32 extends to a position near the top of the buffer oil barrel 3, so that the lubricating oil can be temporarily stored in the buffer oil barrel 3, so that it can flow back to the oil and gas barrel 4 only when the storage amount in the buffer oil barrel 3 reaches a certain requirement.

[0042] The buffer oil barrel 3 is arranged on one side of the motor 1 and the gas storage tank 8 , and is located on one side of the middle position of the motor 1 and the gas storage tank 8 .

[0043] Specifically, the frame structure includes: vertical beams 91 arranged at the four corners of the base 9; a fixed beam 92 arranged in the middle of the two long sides of the base 9; and two support beams 93 arranged on the base 9 close to the gas tank 8 and located between the vertical beams 91 and the fixed beams 92, and the height of the support beams 93 is less than the height of the vertical beams 91 and the fixed beams 92; this design of the frame structure can make the overall stability and bearing capacity of the frame stronger.

[0044] Specifically, the frame structure also includes: at least two bearing members 94 arranged on the top surface of the base 9 for bearing the oil and gas barrel 4, and a groove matching the bottom of the oil and gas barrel 4 is provided at the middle position of the bearing member 94, and the bearing member 94 can fix the oil and gas barrel 4 more firmly; it also includes at least four first fixing members 95 and at least four second fixing members 96 arranged on the top surface of the base 9 for fixing the motor 1 and the gas storage tank 8; the bottom of the motor 1 and the bottom of the gas storage tank 8 are screwed to the first fixing member 95 and the second fixing member 96, and the screwing can facilitate disassembly and maintenance.

[0045] The gas storage tank 8 is arranged on the right side of the motor 1. The oil and gas barrel 4 is arranged on the upper left side of the buffer oil barrel 3. This structure has better air permeability.

[0046] like Figure 2-3 As shown, the control box 10 is also arranged in a first protective box 101, and the first protective box 101 is located between the vertical beam 91 and the fixed beam 92 on the side close to the oil and gas barrel 4, and a protective door 102 is installed between the vertical beam 91 and the fixed beam 92; the first protective box 101 and the protective door 102 can protect the control box 10 to prevent the control box 10 from being damaged and causing the air compressor to fail to work normally.

[0047] like Figure 4-5As shown, there are two heat exchange devices 7, which are arranged in the second protective box 103. The second protective box 103 is arranged on the top surface of the support beam 93 and the first protective box 101. The top surface of the second protective box 103 is provided with a breathable mesh panel 104; there are two heat exchange devices 7, which can make the exchange of cold and hot air faster and the heat dissipation stronger, which is conducive to heat dissipation.

[0048] The air compressor with a lubricating oil reflux buffer structure for preventing damage to the machine head in this embodiment is used as follows: when the air compressor starts working, the lubricating oil flows from the oil and gas barrel 4 through the second oil pipe 32 into the enclosed containing space of the buffer oil barrel 3, and then flows from the enclosed containing space into the machine head 2 through the first oil pipe 31; when the air compressor stops, the lubricating oil flows from the machine head 2 through the first oil pipe 31 into the enclosed containing space of the buffer oil barrel 3, a part of it is stored in the enclosed containing space, and the excess lubricating oil flows back to the oil and gas barrel 4 through the second oil pipe 32; when the air compressor is started again, the lubricating oil directly flows from the enclosed containing space of the buffer oil barrel 3 through the first oil pipe 31 into the machine head 2, so that the speed at which the lubricating oil flows into the machine head 2 can be faster.

[0049] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of this innovative technical solution.

Claims

1. An air compressor having a lubricating oil backflow buffer structure for preventing damage to a machine head, comprising a motor (1), a machine head (2), an oil-gas barrel (4), an oil-gas separator (5), an oil filter (6), a heat exchange device (7) and an air storage tank (8); Features: It also includes a buffer oil barrel (3), which is arranged between the machine head (2) and the oil and gas barrel (4) and has a closed accommodating space, and also includes a first oil pipe (31) and a second oil pipe (32) which are connected to the closed accommodating space, the other end of the first oil pipe (31) is connected to the machine head (2), and the other end of the second oil pipe (32) is connected to the oil and gas barrel (4), and the position of the opening of the first oil pipe (31) connected to the buffer oil barrel (3) is lower than the position of the opening of the second oil pipe (32) connected to the buffer oil barrel (3); the length of the first oil pipe (31) is less than the length of the pipeline directly connecting the machine head (2) and the oil and gas barrel (4); The air compressor further comprises a frame structure having a base (9); the motor (1), the machine head (2), the buffer oil drum (3), the oil and gas drum (4), the oil and gas separator (5), the oil filter (6), the heat exchange device (7) and the gas storage tank (8) are all fixedly mounted on the base (9).

2. The air compressor with a lubricating oil backflow buffer structure for preventing damage to the machine head according to claim 1, characterized in that: One end of the first oil pipe (31) extends into a position close to the bottom of the buffer oil barrel (3), and one end of the second oil pipe (32) extends into a position close to the top of the buffer oil barrel (3).

3. The air compressor with a lubricating oil backflow buffer structure for preventing damage to the machine head according to claim 1, characterized in that: The buffer oil barrel (3) is arranged on one side of the motor (1) and the gas storage tank (8), and is located on one side of a middle position between the motor (1) and the gas storage tank (8).

4. The air compressor with a lubricating oil backflow buffer structure for preventing damage to the machine head according to claim 1, characterized in that: The frame structure comprises: vertical beams (91) arranged at four corners of the base (9); a fixed beam (92) arranged at the middle of two long sides of the base (9); and two support beams (93) arranged on the base (9) near the gas storage tank (8) and located between the vertical beams (91) and the fixed beams (92), wherein the height of the support beams (93) is less than the height of the vertical beams (91) and the fixed beams (92).

5. The air compressor with a lubricating oil backflow buffer structure for preventing damage to the machine head according to claim 4, characterized in that: The frame structure further comprises: at least two bearing members (94) arranged on the top surface of the base (9) for bearing the oil and gas barrel (4), wherein a groove matching and fitting the bottom of the oil and gas barrel (4) is provided at the middle of the bearing member (94); It also includes at least four first fixing members (95) and at least four second fixing members (96) arranged on the top surface of the base (9) and used to fix the motor (1) and the gas storage tank (8); the bottom of the motor (1) and the bottom of the gas storage tank (8) are screwed to the first fixing members (95) and the second fixing members (96).

6. The air compressor with a lubricating oil backflow buffer structure for preventing damage to the machine head according to claim 1, characterized in that: The gas storage tank (8) is arranged on the right side of the motor (1).

7. The air compressor with a lubricating oil backflow buffer structure for preventing damage to the machine head according to claim 1, characterized in that: The oil and gas barrel (4) is arranged at the upper left position of the buffer oil barrel (3).

8. The air compressor with a lubricating oil backflow buffer structure for preventing damage to the machine head according to claim 4, characterized in that: It also includes a control box (10) arranged in a first protection box (101), wherein the first protection box (101) is located between the vertical beam (91) and the fixed beam (92) on a side close to the oil and gas barrel (4), and a protection door (102) is installed between the vertical beam (91) and the fixed beam (92).

9. The air compressor with a lubricating oil backflow buffer structure for preventing damage to the machine head according to claim 8, characterized in that: There are two heat exchange devices (7) arranged in a second protection box (103); the second protection box (103) is arranged on the top surfaces of the support beam (93) and the first protection box (101); and a breathable mesh plate (104) is arranged on the top surface of the second protection box (103).

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