Atomizing water spraying head for single screw compressor

Abstract

The utility model discloses an atomization water spraying head for single screw compressor, including including mounting seat, main pipeline, three branch pipelines and three atomization spray heads, mounting seat is used for with single screw compressor's shell fixed connection, and the inside of mounting seat is provided with the central threaded through -hole of adaptation with main pipeline, and the central threaded through -hole is connected with the inside of compressor shell, and one end of main pipeline is through the central threaded through -hole and extends to the inboard of compressor shell, and the other end of main pipeline is located the outside of compressor shell and is sealedly connected with external water supply pipeline, one end of three branch pipelines all is located with main pipeline the end portion communication in the inboard of shell, and three branch pipelines respectively correspond single screw compressor's star wheel and spiral groove occlusion place, occlusion front end and occlusion rear end setting, and three atomization spray heads are detachably connected with the other end of three branch pipelines. Overcome the poor water injection cooling effect, water resource waste and high energy consumption problem of the existing water lubrication single screw compressor.

Description

Technical Field

[0001] This utility model relates to the field of screw compressor cooling technology, specifically to an atomizing water spray head for a single screw compressor, suitable for water cooling systems of water-lubricated single screw compressors, which optimizes cooling and lubrication effects and water resource utilization efficiency through precise atomized water spraying. Background Technology

[0002] In the operation of a water-lubricated single-screw compressor, the performance of the cooling and lubrication system directly affects the compressor's efficiency and service life. Currently, most existing water-lubricated single-screw compressors use direct water injection into the compressor cavity. While this method is simple in structure, it has significant drawbacks: when the compressor is under high pressure, the temperature of the compressed steam rises sharply, and direct water injection makes it difficult to form a uniformly distributed water curtain. This results in poor cooling and lubrication of the star wheel and spiral groove meshing area, failing to meet the process requirements under high-temperature conditions. Furthermore, to achieve basic cooling, a large amount of water needs to be injected, which not only wastes water resources but also generates useless work within the cavity, reducing compressor efficiency and increasing energy consumption. Therefore, there is an urgent need for an atomizing water nozzle that can differentiate water spraying to the core heat-generating area of ​​the single-screw compressor to address the shortcomings of existing technologies. Utility Model Content

[0003] The purpose of this invention is to overcome the problems of poor cooling effect, water waste and high energy consumption of existing water-lubricated single-screw compressors by direct water injection. It provides an atomizing water spray head for single-screw compressors, which achieves efficient cooling and lubrication of the star wheel and spiral groove meshing area through a three-point precision water spray design, while reducing the circulating water volume.

[0004] The above-mentioned utility model objective is achieved through the following technical solution:

[0005] A water atomizing nozzle for a single-screw compressor includes a mounting base, a main pipeline, three branch pipelines, and three atomizing nozzles. The mounting base is fixedly connected to the housing of the single-screw compressor. The mounting base has a central threaded through-hole adapted to the main pipeline, which communicates with the interior of the compressor housing. One end of the main pipeline passes through the central threaded through-hole and extends to the inside of the compressor housing, while the other end of the main pipeline is located on the outside of the compressor housing and is sealed to an external water supply pipeline. One end of each of the three branch pipelines communicates with the end of the main pipeline located inside the housing, and the three branch pipelines are respectively positioned at the engagement point of the star wheel and the spiral groove of the single-screw compressor, the engagement front end, and the engagement rear end. The three atomizing nozzles are detachably connected to the other ends of the three branch pipelines.

[0006] Preferably, the main pipeline includes an external connector pipe, an adjusting section, and an internal connector pipe connected in sequence; the external connector pipe is located outside the compressor housing, and its outer wall is provided with external threads, which connect to an external water supply pipeline through the threaded connection, and the external water supply pipeline is provided with a ball valve for controlling the total water volume; the outer wall of the adjusting section is provided with a hexagonal prism structure, and its outer wall is provided with external threads that are adapted to the central threaded through hole of the mounting seat, and the main pipeline achieves axial position adjustment through the threaded engagement between the adjusting section and the mounting seat; the internal connector pipe is located inside the compressor housing, and all three branch pipelines are connected to the internal connector pipe, and the outer diameter of the internal connector pipe is smaller than the outer diameter of the adjusting section.

[0007] Preferably, a sealing assembly is provided between the adjusting section and the mounting base; the sealing assembly includes a sealing ring and a locking nut sleeved on the outer wall of the adjusting section, the sealing ring is located between the mounting base and the locking nut, the inner wall of the locking nut is provided with an internal thread adapted to the external thread of the adjusting section, and the locking nut presses the sealing ring against the end face of the mounting base through a threaded connection, thereby achieving a seal between the main pipeline and the mounting base and preventing water leakage.

[0008] Preferably, each of the branch pipes is equipped with a throttling valve to adjust the water spray volume of the branch pipe.

[0009] Preferably, the atomizing nozzle and the branch pipe are detachably connected by threads; the water inlet end of the atomizing nozzle is provided with an internal threaded hole, and the end of the branch pipe is provided with an external thread that matches the internal threaded hole, and the atomizing nozzle is fixed to the branch pipe by the threaded connection; and a sealing gasket is provided at the connection between the atomizing nozzle and the branch pipe, the sealing gasket being made of water-resistant rubber material, to enhance the sealing of the connection and prevent water leakage.

[0010] Preferably, the nozzle of the atomizing nozzle is provided with a swirl vane; the swirl vane is a circular plate structure, which is fixedly installed inside the nozzle, and the surface of the swirl vane is provided with a spiral guide groove, one end of which extends to the central through hole of the swirl vane, and the other end extends to the edge of the swirl vane; when the water flows through the swirl vane, it forms a rotating water flow under the action of the spiral guide groove, and forms a fine and uniform atomized water curtain after being sprayed out of the nozzle, thereby increasing the contact area with the star wheel and the spiral groove.

[0011] In summary, this utility model has the following beneficial technical effects:

[0012] 1. This utility model designs three atomizing nozzles with differentiated water spray volumes for three core areas of a single screw compressor: the meshing point between the star wheel and the spiral groove, the meshing front end, and the meshing rear end. This achieves precise water spraying, improves cooling uniformity, and solves the problem of poor cooling effect under high-pressure conditions.

[0013] 2. The hexagonal prism structure and threaded fit allow for flexible adjustment of the axial position of the atomizing nozzle within the housing, ensuring precise alignment of the nozzle with the engagement area;

[0014] 3. The threaded connection between the atomizing nozzle and the branch pipeline, combined with the sealing gasket, ensures connection stability and facilitates nozzle disassembly and maintenance, solving the problem of inconvenient replacement in the existing structure;

[0015] 4. The swirl vanes create a rotating water flow, resulting in better atomization and a larger contact area with the star wheel and spiral grooves. This leads to higher heat exchange efficiency, further improving cooling and lubrication, and extending the compressor's service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure and installation of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection between the main pipeline and the mounting base of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the branch pipeline and the atomizing nozzle of this utility model;

[0019] Figure 4 This is a schematic diagram of the swirl vane structure of this utility model.

[0020] In the diagram, 1. Mounting base; 2. Center threaded through hole; 3. Main pipeline; 4. External connector pipe; 5. Adjustment section; 6. Hexagonal prism structure; 7. Internal connector pipe; 8. Branch pipeline; 9. Atomizing nozzle; 10. Swirl vane; 11. Spiral guide groove; 12. Sealing assembly; 13. Sealing ring; 14. Locking nut; 15. Throttling regulating valve; 16. Sealing gasket; 17. Compressor housing; 18. Star wheel; 19. Spiral groove; 20. External water supply pipeline; 21. Ball valve. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-4 As shown, this embodiment provides an atomizing spray head for a single-screw compressor, including a mounting base 1, a main pipeline 3, three branch pipelines 8, and three atomizing nozzles 9. The mounting base 1 is fixedly connected to the housing of the single-screw compressor by welding. The mounting base 1 has a central threaded through hole 2 adapted to the main pipeline 3. The central threaded through hole 2 communicates with the inside of the compressor housing 17 to provide a channel for water. One end of the main pipeline 3 passes through the central threaded through hole 2 and extends to the inside of the compressor housing 17, while the other end is located on the outside of the housing and is sealed to the external water supply pipeline 20. The external water supply pipeline 20 provides a continuous water source for the spray heads. A ball valve 21 is provided on the external water supply pipeline 20 to control the total water supply.

[0023] One end of each of the three branch pipes 8 is connected to the end of the main pipe 3 located inside the housing by welding. The three branch pipes 8 are respectively set at the engagement point of the star wheel 18 and the spiral groove 19 of the single screw compressor, the engagement front end and the engagement rear end, to ensure that each core heat-generating area can be covered. The three atomizing nozzles 9 are detachably connected to the other end of the three branch pipes 8. Among them, the atomizing nozzle 9 at the engagement point has the largest nozzle diameter (largest water volume), followed by the engagement front end, and the smallest engagement rear end, to meet the differentiated cooling needs of different areas.

[0024] The main pipeline 3 includes an external connector pipe 4, an adjusting section 5, and an internal connector pipe 7 connected in sequence. The external connector pipe 4 is located on the outside of the housing and has external threads on its outer wall. It is connected to the external water supply pipeline 20 through the threaded connection. The adjusting section 5 has a hexagonal prism structure 6 on its outer wall, which is convenient for wrench clamping and rotation. The adjusting section 5 also has external threads that are adapted to the central threaded through hole 2 of the mounting base 1. By rotating the adjusting section 5, the axial position of the main pipeline 3 can be changed, thereby adjusting the distance between the atomizing nozzle 9 and the engagement area. The internal connector pipe 7 is located on the inside of the housing and has an outer diameter smaller than that of the adjusting section 5. All three branch pipelines 8 are welded to the internal connector pipe 7 to ensure connection strength.

[0025] A sealing assembly 12 is provided between the adjusting section 5 and the mounting base 1. The sealing assembly 12 includes a sealing ring 13 and a locking nut 14. The sealing ring 13 is sleeved on the outer wall of the adjusting section 5 and is made of nitrile water-resistant rubber. The inner wall of the locking nut 14 is provided with internal threads, which cooperate with the external threads of the adjusting section 5. Tightening the locking nut 14 can press the sealing ring 13 onto the end face of the mounting base 1, thereby achieving a seal between the main pipeline 3 and the mounting base 1 and preventing water leakage.

[0026] Each branch pipe 8 is equipped with a throttling regulating valve 15, which is used to change the flow area of ​​the valve cavity to adjust the water spray volume and adapt to different working conditions.

[0027] The atomizing nozzle 9 and the branch pipe 8 are detachably connected by threads. The water inlet end of the atomizing nozzle 9 is provided with an internal threaded hole, and the end of the branch pipe 8 is provided with an external thread. The threaded connection facilitates the disassembly and maintenance of the nozzle, and a sealing gasket 16 is provided at the connection. The sealing gasket 16 is made of water-resistant rubber material to enhance the sealing performance and prevent water leakage.

[0028] The nozzle 9 has a fixed swirl vane 10 inside the nozzle. The swirl vane 10 is a stainless steel circular plate with a spiral guide groove 11 on its surface. When water flows through the swirl vane 10, it forms a rotating water flow along the spiral guide groove 11. After being sprayed out of the nozzle, it forms a fine atomized water curtain, which improves the cooling uniformity and heat exchange efficiency.

[0029] In use, the axial position of the main pipeline 3 is first adjusted by adjusting the hexagonal prism structure 6 of the adjustment section 5, so that the three atomizing nozzles 9 are respectively aligned with the meshing point, the front end of the meshing point, and the rear end of the meshing point of the star wheel 18 and the spiral groove 19. Then, the locking nut 14 is tightened to compress the sealing ring 13. The ball valve 21 of the external water supply pipeline 20 is opened, and the water spray volume is adjusted by the throttling regulating valve 15 of each branch pipeline 8 to ensure that the water spray volume at the meshing point is the maximum and the water spray volume at the rear end of the meshing point is the minimum. The water flows through the main pipeline 3 and the branch pipeline 8 to the atomizing nozzles 9, and forms an atomized water curtain through the swirl plate 10, which is sprayed toward the target area to achieve efficient cooling and lubrication.

[0030] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. An atomizing spray head for a single-screw compressor, comprising a mounting base (1) and a main pipeline (3), characterized in that: It also includes three branch pipes (8) and three atomizing nozzles (9); the mounting base (1) is used to fix the housing of the single screw compressor, and the mounting base (1) has a central threaded through hole (2) adapted to the main pipe (3) inside, which is connected to the inside of the compressor housing (17); one end of the main pipe (3) passes through the central threaded through hole (2) and extends to the inside of the compressor housing (17), and the other end of the main pipe (3) is located outside the compressor housing (17) and is sealed to the external water supply pipe (20); the three branch pipes (8) are also included. One end of each branch pipe (8) is connected to the end of the main pipe (3) located inside the housing, and the three branch pipes (8) are respectively set at the meshing point of the star wheel (18) and the spiral groove (19) of the single screw compressor, the meshing front end and the meshing rear end; the three atomizing nozzles (9) are detachably connected to the other end of the three branch pipes (8), the water spray volume of the atomizing nozzle (9) set at the meshing point is greater than the water spray volume of the atomizing nozzle (9) set at the meshing front end, and the water spray volume of the atomizing nozzle (9) set at the meshing front end is greater than the water spray volume of the atomizing nozzle (9) set at the meshing rear end.

2. The atomizing water spray head for a single-screw compressor according to claim 1, characterized in that: The main pipeline (3) includes an external connector pipe (4), an adjusting section (5), and an internal connector pipe (7) connected in sequence. The external connector pipe (4) is located outside the compressor housing (17). The outer wall of the external connector pipe (4) is provided with an external thread, which is connected to the external water supply pipeline (20) through a threaded connection. The external water supply pipeline (20) is provided with a ball valve (21) for controlling the total water volume. The outer wall of the adjusting section (5) is provided with a hexagonal prism structure (6). The hexagonal prism structure (6) is used for a wrench to hold and rotate the adjusting section (5). The outer wall of the adjusting section (5) is also provided with an external thread that matches the central threaded through hole (2) of the mounting base (1). The main pipeline (3) achieves axial position adjustment through the threaded engagement between the adjusting section (5) and the mounting base (1). The internal connector pipe (7) is located inside the compressor housing (17). All three branch pipelines (8) are connected to the internal connector pipe (7), and the outer diameter of the internal connector pipe (7) is smaller than the outer diameter of the adjusting section (5).

3. The atomizing water spray head for a single-screw compressor according to claim 2, characterized in that: A sealing assembly (12) is provided between the adjusting section (5) and the mounting base (1); the sealing assembly (12) includes a sealing ring (13) sleeved on the outer wall of the adjusting section (5) and a locking nut (14). The sealing ring (13) is located between the mounting base (1) and the locking nut (14). The inner wall of the locking nut (14) is provided with an internal thread that matches the external thread of the adjusting section (5). The locking nut (14) presses the sealing ring (13) onto the end face of the mounting base (1) through a threaded connection, thereby achieving a seal between the main pipeline (3) and the mounting base (1) to prevent water leakage.

4. The atomizing water spray head for a single-screw compressor according to claim 1, characterized in that: The atomizing nozzle (9) and the branch pipe (8) are detachably connected by threads; the water inlet end of the atomizing nozzle (9) is provided with an internal threaded hole, and the end of the branch pipe (8) is provided with an external thread that matches the internal threaded hole. The atomizing nozzle (9) is fixed to the branch pipe (8) by threaded connection; and a sealing gasket (16) is provided at the connection between the atomizing nozzle (9) and the branch pipe (8). The sealing gasket (16) is made of water-resistant rubber material to enhance the sealing of the connection and prevent water leakage.

5. The atomizing water spray head for a single-screw compressor according to claim 1, characterized in that: The atomizing nozzle (9) is provided with a swirl plate (10) at the nozzle opening; the swirl plate (10) is a circular plate structure, which is fixedly installed inside the nozzle. The surface of the swirl plate (10) is provided with a spiral guide groove (11). One end of the spiral guide groove (11) extends to the central through hole of the swirl plate (10), and the other end extends to the edge of the swirl plate (10). When the water flows through the swirl plate (10), it forms a rotating water flow under the action of the spiral guide groove (11). After being sprayed out of the nozzle, it forms a fine and uniform atomized water curtain, which increases the contact area with the star wheel (18) and the spiral groove (19).

6. The atomizing water spray head for a single-screw compressor according to claim 1, characterized in that: Each of the branch pipes (8) is equipped with a throttling valve (15).

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