A vertical oil-gas separation device for an oil-injected screw compressor

Abstract

This utility model relates to the field of oil-injected screw compressor technology, specifically to a vertical oil-gas separation device for an oil-injected screw compressor, comprising a cylinder, an end cover, a primary mounting plate, a secondary mounting plate, a primary oil separator core, and a secondary oil separator core. The end cover is connected to the cylinder via a flange and is located at the top of the cylinder. The primary mounting plate is fixedly connected to the cylinder and is located at the top of the cylinder. The secondary mounting plate is fixedly connected to the end cover and is located at the bottom of the end cover. The primary oil separator core is detachably connected to the primary mounting plate and is located below the primary mounting plate. The secondary oil separator core is detachably connected to the secondary mounting plate and is located above the secondary mounting plate. By optimizing the internal structure of the oil-gas cylinder, adopting a multi-stage separation design, and rationally arranging the distribution position of the oil separator cores, the effective filtration area of ​​the oil separator cores is increased. While ensuring efficient oil-gas separation, the service life of the oil separator cores can be effectively extended, and the replacement frequency can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of oil-injected screw compressor technology, and in particular to an oil-gas separation device for a vertical oil-injected screw compressor. Background Technology

[0002] As a core functional unit of oil-injected screw compressors, the rationality of the oil-gas separator's structural design directly affects the operating efficiency, energy consumption level, and long-term reliability of the entire compressor system. As a key device for achieving gas-liquid separation, the structural optimization of the oil-gas separator not only relates to the final quality of compressed air but also plays a decisive role in the operational stability, maintenance cycle, and service life of the entire unit. A scientifically sound oil-gas separator design can effectively reduce the oil content in the exhaust gas, minimize pressure loss, and improve oil separation efficiency, thereby ensuring the compressor system operates continuously and stably under optimal conditions.

[0003] The oil-gas separation system of an oil-injected screw compressor typically adopts a modular design and is mainly composed of the following core components: 1) a pressure vessel-type oil-gas cylinder, which serves as the main structure of the system; 2) a high-efficiency multi-stage oil separator filter assembly, including a mother core that achieves coarse separation and a daughter core that completes fine separation; and 3) an automatic oil return device to ensure efficient return of the separated lubricating oil.

[0004] Current mainstream technology employs a two-stage separation scheme with a nested mother-core and daughter-core design. However, this structure has significant technical bottlenecks: the mechanical collision-type pre-separation technology used in the primary separation stage is generally inefficient, causing some suspended oil mist to directly enter the separation stage. This design flaw leads to the separation filter element being subjected to excessive loads, specifically manifested as: 1) shortened filter element lifespan; 2) increased system pressure differential; and 3) excessive oil content in the exhaust gas. These problems not only increase maintenance costs but also affect the overall reliability of the compressed air system. Utility Model Content

[0005] The purpose of this invention is to provide a vertical oil-gas separation device for an oil-injection screw compressor. By optimizing the internal structure of the oil-gas cylinder, adopting a multi-stage separation design, and rationally arranging the distribution position of the oil separator core, the effective filtration area of ​​the oil separator core is increased. While ensuring efficient oil-gas separation, the service life of the oil separator core can be effectively extended and the replacement frequency reduced.

[0006] To achieve the above objectives, this utility model provides a vertical oil-gas separation device for an oil-injection screw compressor, comprising a cylinder, an end cover, a primary mounting plate, a secondary mounting plate, a primary oil separator core, and a secondary oil separator core; the end cover is connected to the cylinder via a flange and is located at the top of the cylinder; the primary mounting plate is fixedly connected to the cylinder and is located at the top of the cylinder; the secondary mounting plate is fixedly connected to the end cover and is located at the bottom of the end cover; the primary oil separator core is detachably connected to the primary mounting plate and is located below the primary mounting plate; and the secondary oil separator core is detachably connected to the secondary mounting plate and is located above the secondary mounting plate.

[0007] An air supply port is provided on the top of the end cap.

[0008] The vertical oil-gas separation device for the oil-injection screw compressor further includes an air inlet pipe and an oil outlet pipe. The air inlet pipe is fixedly connected to the cylinder and located on the outside of the cylinder, while the oil outlet pipe is fixedly connected to the cylinder and located below the cylinder.

[0009] The vertical oil-gas separation device for the oil-injection screw compressor further includes a separation sleeve and an oil baffle. The separation sleeve is fixedly connected to the cylinder body and is located at the tail end of the air inlet pipe. The oil baffle is fixedly connected to the cylinder body and is located below the air inlet pipe.

[0010] The separation sleeve and the cylinder form a centrifugal separation zone, and the oil baffle and the separation sleeve form a settling separation zone.

[0011] This utility model discloses a vertical oil-gas separation device for an oil-injection screw compressor. By optimizing the internal structure of the oil-gas cylinder, adopting a multi-stage separation design, and rationally arranging the distribution position of the oil separator core, the effective filtration area of ​​the oil separator core is increased. While ensuring efficient oil-gas separation, the service life of the oil separator core can be effectively extended and the replacement frequency reduced. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a front view of the vertical oil-gas separation device of the oil-injection screw compressor according to the first embodiment of this utility model.

[0014] Figure 2 This is a top view of the vertical oil-gas separation device of the oil-injection screw compressor according to the first embodiment of this utility model.

[0015] Figure 3 This is the utility model Figure 1 A schematic diagram of the cross-section at point AA.

[0016] Figure 4 This is the utility model Figure 1 Schematic diagram of the cross section at BB.

[0017] Figure 5 This is the utility model Figure 2 A cross-sectional view at point CC.

[0018] In the diagram: 101-Cylinder body, 102-End cap, 103-First-stage mounting plate, 104-Second-stage mounting plate, 105-First-stage oil separator core, 106-Second-stage oil separator core, 107-Air supply port, 108-Air inlet pipe, 109-Oil outlet pipe, 110-Separation sleeve, 111-Oil baffle plate, 112-Centrifugal separation zone, 113-Sedimentation separation zone. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0020] The first embodiment of this application is as follows:

[0021] Please see Figures 1 to 3 ,in, Figure 1 This is a front view of the vertical oil-gas separation device for an oil-injection screw compressor according to the first embodiment of this utility model. Figure 2 This is a top view of the vertical oil-gas separation device for an oil-injection screw compressor according to the first embodiment of this utility model. Figure 3 This is the utility model Figure 1 A schematic cross-sectional view at point AA. Figure 4 This is the utility model Figure 1 A cross-sectional diagram of section BB. Figure 5 This is the utility model Figure 2 The schematic diagram at the CC section shows that this utility model provides a vertical oil-gas separation device for an oil-injection screw compressor, including a cylinder 101, an end cap 102, a primary mounting plate 103, a secondary mounting plate 104, a primary oil separator core 105, a secondary oil separator core 106, an air inlet pipe 108, an oil outlet pipe 109, a separation sleeve 110, and an oil baffle plate 111. By optimizing the internal structure of the oil-gas cylinder, adopting a multi-stage separation design, and rationally arranging the distribution position of the oil separator cores, the effective filtration area of ​​the oil separator cores is increased. While ensuring efficient oil-gas separation, the service life of the oil separator cores can be effectively extended, and the replacement frequency can be reduced.

[0022] In this specific embodiment, the end cap 102 is connected to the cylinder 101 via a flange and is located at the top of the cylinder 101. The primary mounting plate 103 is fixedly connected to the cylinder 101 and is located at the top of the cylinder 101. The secondary mounting plate 104 is fixedly connected to the end cap 102 and is located at the bottom of the end cap 102. The primary oil separator core 105 is detachably connected to the primary mounting plate 103 and is located below the primary mounting plate 103. The primary oil separator 106 is detachably connected to the secondary mounting plate 104 and is located above the secondary mounting plate 104. The cylinder 101 is used for oil-gas separation, the end cap 102 is used for sealing the cylinder 101, the primary mounting plate 103 is used to provide support for the primary oil separator 105, and the secondary mounting plate 104 is used to provide support for the secondary oil separator 106. The primary oil separator 105 and the secondary oil separator 106 together provide oil-gas separation. For separation, during use, external oil-gas mixture enters the interior of cylinder 101 through air inlet pipe 108. At this time, the high-speed oil-gas mixture undergoes high-speed centrifugal separation through separation sleeve 110, causing the oil-gas mixture to generate a vortex under the centrifugal force of centrifugal separation zone 112. Large oil droplets separated by centrifugation flow directly down the cylinder wall of separation sleeve 110 and fall to the bottom of cylinder 101 through sedimentation separation zone 113. The oil baffle 111 at the bottom of cylinder 101 can effectively prevent lubricating oil from generating a vortex under the centrifugal force of centrifugal separation zone 112, ensuring that the oil outlet pipe 109 can normally draw out lubricating oil, thereby separating the lubricating oil and compressed air. The separated gas is separated upward by the first-stage oil separator core 105 installed on the first-stage mounting plate 103, and then separated by the second-stage oil separator core 106 on the second-stage mounting plate 104, and finally discharged through the air supply port 107 above the end cover 102.

[0023] The end cap 102 has an air supply port 107 on its upper part, which is used to release the separated gas.

[0024] Secondly, the air inlet pipe 108 is fixedly connected to the cylinder 101 and located on the outside of the cylinder 101, and the oil outlet pipe 109 is fixedly connected to the cylinder 101 and located below the cylinder 101. The air inlet pipe 108 is used to compress the oil-air mixture and then introduce it into the cylinder 101, and the oil outlet pipe 109 is used to discharge the separated lubricating oil out of the cylinder 101.

[0025] Furthermore, the separating sleeve 110 is fixedly connected to the cylinder 101 and located at the tail of the air inlet pipe 108, and the oil baffle 111 is fixedly connected to the cylinder 101 and located below the air inlet pipe 108. The separating sleeve 110 is used to isolate the oil-gas mixture, and the oil baffle 111 is used to prevent the lubricating oil from generating vortices after separation.

[0026] Finally, the separation sleeve 110 and the cylinder 101 form a centrifugal separation zone 112, and the oil baffle 111 and the separation sleeve 110 form a settling separation zone 113. The centrifugal separation zone 112 is used to perform preliminary separation of the mixed oil and gas, and the settling separation zone 113 is used to guide the separated lubricating oil.

[0027] The vertical oil-gas separator of this embodiment optimizes the internal structure of the oil-gas cylinder, adopts a multi-stage separation design, and rationally arranges the distribution position of the oil separator core to increase the effective filtration area of ​​the oil separator core. While ensuring efficient oil-gas separation, it can effectively extend the service life of the oil separator core and reduce the replacement frequency.

[0028] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A vertical oil-gas separator for an oil-injection screw compressor, comprising a cylindrical body, characterized in that, It also includes end caps, primary mounting plate, secondary mounting plate, primary oil separator core, and secondary oil separator core; The end cap is connected to the cylinder body via a flange and is located at the top of the cylinder body. The primary mounting plate is fixedly connected to the cylinder body and is located at the top of the cylinder body. The secondary mounting plate is fixedly connected to the end cap and is located at the bottom of the end cap. The primary oil separator core is detachably connected to the primary mounting plate and is located below the primary mounting plate. The secondary oil separator core is detachably connected to the secondary mounting plate and is located above the secondary mounting plate.

2. The oil-gas separator for a vertical oil-injection screw compressor as described in claim 1, characterized in that, An air supply port is provided on the top of the end cap.

3. The vertical oil-gas separator for an oil-injected screw compressor as described in claim 1, characterized in that, The vertical oil-gas separation device for the oil-injection screw compressor also includes an air inlet pipe and an oil outlet pipe. The air inlet pipe is fixedly connected to the cylinder and located on the outside of the cylinder, while the oil outlet pipe is fixedly connected to the cylinder and located below the cylinder.

4. The vertical oil-gas separator for an oil-injection screw compressor as described in claim 3, characterized in that, The vertical oil-gas separation device for the oil-injection screw compressor also includes a separation sleeve and an oil baffle. The separation sleeve is fixedly connected to the cylinder body and is located at the tail end of the air inlet pipe. The oil baffle is fixedly connected to the cylinder body and is located below the air inlet pipe.

5. The vertical oil-gas separator for an oil-injection screw compressor as described in claim 4, characterized in that, The separation sleeve and the cylinder form a centrifugal separation zone, and the oil baffle and the separation sleeve form a sedimentation separation zone.

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