Oil injection screw type air compressor

Abstract

The utility model belongs to the technical field of air compressors, and particularly relates to an oil injection screw type air compressor which comprises a machine body, an air inlet, an air outlet, a condensation bin and a threaded hole are formed in the machine body, a motor is fixedly arranged in the machine body, a screw rotor is fixedly arranged on an output shaft of the motor, an air guide pipe is fixedly arranged on the air outlet, and an air outlet is formed in the air guide pipe. A condensation bin is arranged in the machine body, an air inlet hole and an exhaust hole are formed in the condensation bin, a sealing plate is fixedly arranged in the condensation bin, an activated carbon plate is fixedly arranged below the sealing plate, a fixing plate is rotationally arranged at the bottom of the machine body, and a bolt is spirally arranged on the fixing plate. The condensation bin is arranged below the air outlet to surround the air guide pipe, flowing cold air is used for cooling an oil-gas mixture in the air guide pipe, and due to the fact that liquefaction temperatures of oil and water are different, oil in air can be changed into oil mist by controlling the temperature of the condensation air. And then oil mist and impurities in the air are adsorbed in cooperation with the folded activated carbon plate on the lower portion, and therefore the air quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an oil-injected screw air compressor. Background Art

[0002] Oil-injected screw air compressor is a common industrial air compressor. Its working principle is to compress air by using the rotation of the screw rotor, and to improve efficiency and extend equipment life through oil injection cooling and lubrication technology.

[0003] Since the oil-injected screw air compressor will spray lubricating oil into the compression chamber during the compression process to cool and lubricate the rotor and bearings, the compressed air will contain a certain amount of oil, which makes the oil-injected screw air compressor unsuitable for industries with extremely high requirements for air quality, such as food, medicine, etc. Although some air compressors are equipped with oil filters, the oil filtered out by the oil filters is limited. Therefore, another easily replaceable filter structure is needed to perform secondary filtration of the oil in the air in order to better improve the air quality.

[0004] In order to solve the above problems, this application proposes an oil-injected screw air compressor. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an oil-injected screw air compressor, including a body, which is provided with an air inlet, an air outlet, a condensate bin and threaded holes, a motor is fixedly provided in the body, a screw rotor is fixedly provided on the output shaft of the motor, an air duct is fixedly provided on the air outlet, an air inlet hole and an exhaust hole are provided on the condensate bin, a sealing plate is fixedly provided in the condensate bin, an activated carbon plate is fixedly provided below the sealing plate, a fixing plate is rotatably provided at the bottom of the body, and bolts are spirally provided on the fixing plate.

[0006] Preferably, the air inlet is located on the left side of the screw rotor, and the air outlet is located on the right side of the screw rotor.

[0007] Preferably, the air duct is fixedly connected below the air outlet, the air duct is located in the inner cavity of the condensing chamber, the air inlet and the air outlet pass through the side wall of the machine body, and the air inlet is connected to the refrigeration device.

[0008] Preferably, the air duct passes through a sealing plate, an inner ring of the sealing plate is fixedly connected to the bottom side wall of the air duct, an outer ring side wall of the sealing plate is fixedly connected to the side wall of the inner cavity of the condensation bin, and the outer ring diameter of the sealing plate is equal to the inner cavity diameter of the condensation bin.

[0009] Preferably, the activated carbon plate is movably connected to the side wall of the machine body, and the activated carbon plate is folded in shape.

[0010] Preferably, the bottom of the activated carbon plate and the bottom of the body are on the same horizontal plane, and the fixing plate is also provided with a threaded hole, and the bolt is screwed in the threaded hole.

[0011] The above technical solution of the utility model has the following beneficial technical effects:

[0012] The utility model arranges a condensation chamber below the air outlet to surround the air guide pipe, and uses flowing cold air to cool the oil and gas mixture in the pipe. Since the liquefaction temperatures of oil and water are different, the oil in the air can be converted into oil mist by controlling the temperature of the condensed gas, and then the oil mist and impurities in the air are adsorbed in conjunction with the folded activated carbon plate below, thereby improving the air quality and making the air produced by the air compressor suitable for more industries and scenarios, thereby increasing the diversity of the device. At the same time, a rotating fixed plate is arranged at the bottom of the machine body, and the fixed plate is fixed to the bottom of the activated carbon plate by bolts, thereby completing the installation and fixation of the activated carbon plate, making the activated carbon plate more convenient to disassemble and install during cleaning and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above.

[0016] Reference numerals:

[0017] 1. Machine body; 101. Air inlet; 102. Air outlet; 2. Screw rotor; 3. Motor; 4. Air duct; 5. Condensation chamber; 501. Air inlet; 502. Exhaust hole; 6. Sealing plate; 7. Activated carbon plate; 8. Fixing plate; 9. Threaded hole; 901. Bolt. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0019] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0020] An oil-injected screw air compressor provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0021] Embodiment 1:

[0022] Combination Figure 1-3 As shown, the utility model provides an oil-injected screw air compressor, including a body 1, the body 1 is provided with an air inlet 101, an air outlet 102, a condensation chamber 5 and a threaded hole 9, a motor 3 is fixedly arranged in the body 1, a screw rotor 2 is fixedly arranged on the output shaft of the motor 3, an air guide pipe 4 is fixedly arranged on the air outlet 102, an air inlet hole 501 and an air outlet hole 502 are opened in the condensation chamber 5, a sealing plate 6 is fixedly arranged in the condensation chamber 5, an activated carbon plate 7 is fixedly arranged below the sealing plate 6, a fixing plate 8 is rotatably arranged at the bottom of the body 1, a bolt 901 is spirally arranged on the fixing plate 8, the air inlet 101 is located on the left side of the screw rotor 2, the air outlet 102 is located on the right side of the screw rotor 2, and the air guide pipe 4 is fixedly connected below the air outlet 102, the air duct 4 is located in the inner cavity of the condensing bin 5, the air inlet hole 501 and the air outlet hole 502 pass through the side wall of the body 1, the air inlet hole 501 is connected to the refrigeration device, the air duct 4 passes through the sealing plate 6, the inner ring of the sealing plate 6 is fixedly connected to the bottom side wall of the air duct 4, the outer ring side wall of the sealing plate 6 is fixedly connected to the inner cavity side wall of the condensing bin 5, the outer ring diameter of the sealing plate 6 is equal to the inner cavity diameter of the condensing bin 5, the activated carbon plate 7 is movably connected to the side wall of the body 1, the shape of the activated carbon plate 7 is folded, the bottom of the activated carbon plate 7 and the bottom of the body 1 are on the same horizontal plane, the fixing plate 8 is also provided with a threaded hole 9, and the bolt 901 is spirally connected in the threaded hole 9.

[0023] Specifically, a motor 3 is fixedly installed in the body 1, and a screw rotor 2 is fixedly connected to the output shaft of the motor 3, so that the motor 3 can drive the rotation of the screw rotor 2, and the air is compressed by the rotation of the screw rotor 2. An air inlet 101 is provided on the body 1, so that air and oil can enter the screw rotor 2, and then be transported to the air outlet 102. An air guide pipe 4 is fixedly welded below the air outlet 102, and the air guide pipe 4 is located inside the condensation bin 5. An air inlet hole 501 and an exhaust hole 502 are provided on the condensation bin 5. The refrigeration device transports cold air to the condensation bin 5 through the air inlet hole 501, and then discharges it through the exhaust hole 502. When the cold air stays and flows in the condensation bin 5, the oil-gas mixture in the air guide pipe 4 will cool down, and then the oil in the air will become oil mist, and then through the air guide pipe The tube 4 reaches the activated carbon plate 7, and a sealing plate 6 is fixedly welded on the bottom side of the air guide tube 4. The side of the sealing plate 6 is fixedly welded in the condensation chamber 5 to prevent the cold air from leaking. The activated carbon plate 7 is fixedly installed under the air guide tube 4, and the shape of the activated carbon plate 7 is folded, so that when the air reaches the activated carbon plate 7 with oil mist, it will go through multiple layers of filtration and adsorption, thereby removing the oil mist and impurities in the air, so that the filtration and adsorption effect is better, thereby greatly improving the quality of the air. At the bottom of the body 1, a fixing plate 8 is connected. Threaded holes 9 are provided on the fixing plate 8 and the bottom of the body 1, and bolts 901 are screwed into the threaded holes 9 to fix the fixing plate 8 to the bottom of the activated carbon plate 7, so that the staff can install and disassemble the activated carbon plate 7, thereby facilitating subsequent cleaning and replacement.

[0024] The working principle and use process of the utility model are as follows: first, air and lubricating oil are introduced into one side of the screw rotor 2 through the air inlet 101, the motor 3 is started, and the screw rotor 2 is controlled to start rotating, and then the oil-gas mixture will reach the air outlet 102 on the right side of the screw rotor 2, and then the air enters the air duct 4, and the cold air is introduced into the condensation bin 5 through the air inlet 501 to cool the air. At this time, the oil in the air will become oil mist, and then follow the air to the activated carbon plate 7. Through the multi-layer filtration and adsorption of the activated carbon plate 7, the oil mist and impurities in the air will be adsorbed and filtered to a great extent, and finally the gas with higher air quality will be discharged out of the body 1. When it is necessary to replace and clean the activated carbon plate 7, it is only necessary to unscrew the bolt 901 from the threaded hole 9, and then rotate the fixing plate 8 to remove the activated carbon plate 7. The operation is simple and convenient.

[0025] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. An oil-injected screw air compressor, comprising a body (1), characterized in that: The machine body (1) is provided with an air inlet (101), an air outlet (102), a condensation chamber (5) and a threaded hole (9); a motor (3) is fixedly provided inside the machine body (1); a screw rotor (2) is fixedly provided on the output shaft of the motor (3); an air guide pipe (4) is fixedly provided on the air outlet (102); an air inlet hole (501) and an air outlet hole (502) are provided on the condensation chamber (5); a sealing plate (6) is fixedly provided inside the condensation chamber (5); an activated carbon plate (7) is fixedly provided below the sealing plate (6); a fixing plate (8) is rotatably provided at the bottom of the machine body (1); a bolt (901) is spirally provided on the fixing plate (8).

2. The oil-injected screw air compressor according to claim 1, characterized in that: The air inlet (101) is located on the left side of the screw rotor (2), and the air outlet (102) is located on the right side of the screw rotor (2).

3. The oil-injected screw air compressor according to claim 1, characterized in that: The air guide pipe (4) is fixedly connected below the air outlet (102), the air guide pipe (4) is located in the inner cavity of the condensation chamber (5), the air inlet hole (501) and the air outlet hole (502) pass through the side wall of the body (1), and the air inlet hole (501) is connected to the refrigeration device.

4. The oil-injected screw air compressor according to claim 1, characterized in that: The air duct (4) passes through the sealing plate (6), the inner ring of the sealing plate (6) is fixedly connected to the bottom side wall of the air duct (4), the outer ring side wall of the sealing plate (6) is fixedly connected to the inner cavity side wall of the condensation bin (5), and the outer ring diameter of the sealing plate (6) is equal to the inner cavity diameter of the condensation bin (5).

5. The oil-injected screw air compressor according to claim 1, characterized in that: The activated carbon plate (7) is movably connected to the side wall of the machine body (1), and the activated carbon plate (7) is in a folded shape.

6. The oil-injected screw air compressor according to claim 1, characterized in that: The bottom of the activated carbon plate (7) and the bottom of the machine body (1) are on the same horizontal plane, and the fixing plate (8) is also provided with a threaded hole (9), and the bolt (901) is screwed into the threaded hole (9).

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