A gearbox for a twin-screw compressor with water channels

Abstract

This utility model discloses a gearbox for a twin-screw compressor with water channels. The inner side of the gearbox body is provided with a left upper end reinforcing rib, a right upper end reinforcing rib, a left middle reinforcing rib, a right middle reinforcing rib, a left lower end reinforcing rib, a right lower end reinforcing rib, a left inner end connecting rib, a left outer end connecting rib, a lower inner end connecting rib, a right outer end connecting rib, and a right inner end connecting rib. Water channels are opened inside each reinforcing rib and connecting rib to connect with each other. The reinforcing ribs and connecting ribs ensure the structural strength of the gearbox body while also enabling heat exchange inside the gearbox through circulating fluid. There is no need to set up a separate hot water exchange circuit. It is also convenient to process, saves space and cost. At the same time, the connecting ribs arranged at intervals inside and outside greatly improve the coverage of the water channels.

Description

Technical Field

[0001] This utility model relates to the field of compressor gearbox technology, specifically a gearbox for a twin-screw compressor with a water channel. Background Technology

[0002] For twin-screw compressors, the gearbox is the heart of the transmission system, and its design and manufacturing directly determine the compressor's performance, efficiency, and reliability. A twin-screw compressor has two parallel screws—a male rotor and a female rotor. They need to rotate synchronously and precisely to compress the gas. The core functions of the gearbox are: synchronous drive, power transmission, load bearing, and ensuring efficiency.

[0003] To ensure the service life of gears, gearboxes are generally equipped with heat dissipation measures. Existing twin-screw compressor gearboxes typically have independent water channels, which increases both space requirements and costs. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a gearbox for a twin-screw compressor with a water channel, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gearbox for a twin-screw compressor with a water channel, comprising a gearbox body, a cavity provided on the inner side of the gearbox body, a motor output shaft bearing hole provided at the center of the gearbox body, a cylindrical body provided on the inner side of the gearbox body at the motor output shaft bearing hole, and a left upper reinforcing rib, a right upper reinforcing rib, a left middle reinforcing rib, a right middle reinforcing rib, a left lower reinforcing rib, and a right lower reinforcing rib provided on the inner side of the gearbox body. A left inner connecting rib is connected between the upper side reinforcing rib and the middle left side reinforcing rib near the cylinder. A left outer connecting rib is connected between the middle left side reinforcing rib and the lower left side reinforcing rib away from the cylinder. A lower inner connecting rib is connected between the lower left side reinforcing rib and the lower right side reinforcing rib near the cylinder. A right outer connecting rib is connected between the middle right side reinforcing rib and the lower right side reinforcing rib away from the cylinder. A right inner connecting rib is connected between the middle right side reinforcing rib and the upper right side reinforcing rib near the cylinder. A water inlet channel is formed inside the upper left reinforcing rib along its length; a first water channel is formed inside the middle left reinforcing rib along its length; a second water channel is formed inside the lower left reinforcing rib along its length; a third water channel is formed inside the lower right reinforcing rib along its length; a fourth water channel is formed inside the middle right reinforcing rib along its length; a water outlet channel is formed inside the upper right reinforcing rib along its length; a fifth water channel is formed inside the inner left connecting rib along its length; a sixth water channel is formed inside the outer left connecting rib along its length; a seventh water channel is formed inside the inner lower connecting rib along its length; an eighth water channel is formed inside the outer right connecting rib along its length; and a ninth water channel is formed inside the inner right connecting rib along its length.

[0006] Preferably, the present invention provides a gearbox for a twin-screw compressor with water channels, wherein the inlet water channel is connected to the first water channel via a fifth water channel, the first water channel is connected to the second water channel via a sixth water channel, the second water channel is connected to the third water channel via a seventh water channel, the third water channel is connected to the fourth water channel via an eighth water channel, and the fourth water channel is connected to the outlet water channel via a ninth water channel.

[0007] Preferably, the present invention provides a gearbox for a twin-screw compressor with a water channel, wherein both ends of the left upper reinforcing rib, the right upper reinforcing rib, the left middle reinforcing rib, the right middle reinforcing rib, the left lower reinforcing rib, and the right lower reinforcing rib are connected to the inner wall of the gearbox body and the outer wall of the bearing hole of the motor output shaft.

[0008] Preferably, the present invention provides a gearbox for a twin-screw compressor with a water channel, wherein the outer ends of the water inlet and water outlet are provided with water interfaces.

[0009] Preferably, the present invention provides a gearbox for a twin-screw compressor with water channels, wherein the outer ends of the first, second, third, and fourth water channels are all connected to the outside of the gearbox body, and the outer ends of the first, second, third, and fourth water channels are all provided with a first sealing port.

[0010] Preferably, the present invention provides a gearbox for a twin-screw compressor with water channels, wherein the left upper reinforcing rib located in the extension section of the fifth water channel, the left middle reinforcing rib located in the extension section of the sixth water channel, the right lower reinforcing rib located in the extension section of the seventh water channel, the right middle reinforcing rib located in the extension section of the eighth water channel, and the right upper reinforcing rib located in the extension section of the ninth water channel are all provided with a second sealing port.

[0011] Preferably, the present invention provides a gearbox for a twin-screw compressor with a water channel, wherein a boss is provided on the inner side of the gearbox body and on the outer periphery of the cylinder, and a plurality of screw holes are provided on the outer side of the gearbox body and on the boss.

[0012] Preferably, the present invention provides a gearbox for a twin-screw compressor with a water channel, wherein the outer periphery of the gearbox body is provided with a plurality of connecting holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The inner side of the gearbox body is provided with upper left and upper right reinforcing ribs, middle left and middle right reinforcing ribs, lower left and lower right reinforcing ribs, inner left and outer left connecting ribs, inner lower connecting ribs, outer right connecting ribs, and inner right connecting ribs. Interconnected water channels are opened inside each reinforcing rib and connecting rib. The reinforcing ribs and connecting ribs ensure the structural strength of the gearbox body while also enabling heat exchange inside the gearbox through circulating fluid. There is no need to set up a separate hot water exchange circuit, which is convenient for processing and saves space and cost. At the same time, the connecting ribs arranged at intervals inside and outside greatly improve the coverage of the water channels. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention located in the waterway; Figure 3 This is a top view of the structure of this utility model; Figure 4 For the appendix Figure 1 A schematic diagram of the angle transformation structure.

[0015] In the diagram: 1. Gearbox body; 2. Motor output shaft bearing hole; 3. Cylinder; 4. Upper left reinforcing rib; 5. Upper right reinforcing rib; 6. Middle left reinforcing rib; 7. Middle right reinforcing rib; 8. Lower left reinforcing rib; 9. Lower right reinforcing rib; 10. Inner left connecting rib; 11. Outer left connecting rib; 12. Inner lower connecting rib; 13. Outer right connecting rib; 14. Inlet channel; 15. First water channel; 16. Second water channel; 17. Third water channel; 18. Fourth water channel; 19. Outlet channel; 20. Fifth water channel; 21. Sixth water channel; 22. Seventh water channel; 23. Eighth water channel; 24. Ninth water channel; 25. Water interface; 26. First sealing port; 27. Second sealing port; 28. Boss; 29. ​​Screw hole; 30. Connecting hole; 31. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: a gearbox for a twin-screw compressor with a water channel, including a gearbox body 1. A cavity is provided on the inner side of the gearbox body 1. A motor output shaft bearing hole 2 is provided at the center of the gearbox body 1. A cylinder 3 is provided on the inner side of the gearbox body 1 at the location of the motor output shaft bearing hole 2. Left upper reinforcing rib 4, right upper reinforcing rib 5, left middle reinforcing rib 6, right middle reinforcing rib 7, left lower reinforcing rib 8, and right lower reinforcing rib 9 are provided on the inner side of the gearbox body 1. Both ends of the left upper reinforcing rib 4, right upper reinforcing rib 5, left middle reinforcing rib 6, right middle reinforcing rib 7, left lower reinforcing rib 8, and right lower reinforcing rib 9 are connected to the inner wall of the gearbox body 1 and the outer wall of the motor output shaft bearing hole 2 to ensure the support of each reinforcing rib and the structural strength of the gearbox body 1 and the motor output shaft bearing hole 2. A cylinder 3 is provided on the inner side of the gearbox body 1 and around the cylinder 3. The gearbox body 1 has a boss 29 to ensure the structural strength of the cylinder 3 and to ensure the thickness for easy access to the screw holes 30. Several screw holes 30 are provided on the outer side of the gearbox body 1 at the boss 29 to achieve a tight connection with the annular seal. The left upper reinforcing rib 4 and the left middle reinforcing rib 6 are connected to the left inner connecting rib 10 at the end near the cylinder 3. The left middle reinforcing rib 6 and the left lower reinforcing rib 8 are connected to the left outer connecting rib 11 at the end away from the cylinder 3. The left lower reinforcing rib 8 and the right lower reinforcing rib 9 are connected to the lower inner connecting rib 12 at the end near the cylinder 3. The right middle reinforcing rib 7 and the right lower reinforcing rib 9 are connected to the right outer connecting rib 13 at the end away from the cylinder 3. The right middle reinforcing rib 7 and the right upper reinforcing rib 5 are connected to the right inner connecting rib 14 at the end near the cylinder 3. Several connecting holes 31 are provided on the periphery of the gearbox body 1 to achieve a tight connection with the front bearing seat of the twin screw compressor. The upper left reinforcing rib 4 has an inlet channel 15 along its length; the middle left reinforcing rib 6 has a first water channel 16 along its length; the lower left reinforcing rib 8 has a second water channel 17 along its length; the lower right reinforcing rib 9 has a third water channel 18 along its length; the middle right reinforcing rib 7 has a fourth water channel 19 along its length; the upper right reinforcing rib 5 has an outlet channel 20 along its length; the inner left connecting rib 10 has a fifth water channel 21 along its length; the outer left connecting rib 11 has a sixth water channel 22 along its length; the inner lower connecting rib 12 has a seventh water channel 23 along its length; the outer right connecting rib 13 has an eighth water channel 24 along its length; and the inner right connecting rib 14 has a ninth water channel 25 along its length. The inlet channel 15 is connected to the first channel 16 via the fifth channel 21. The first channel 16 is connected to the second channel 17 via the sixth channel 22. The second channel 17 is connected to the third channel 18 via the seventh channel 23. The third channel 18 is connected to the fourth channel 19 via the eighth channel 24. The fourth channel 19 is connected to the outlet channel 20 via the ninth channel 25. This ensures that the circulating water can pass through the fifth channel 21, the first channel 16, the sixth channel 22, the second channel 17, the seventh channel 23, the third channel 18, the eighth channel 24, the fourth channel 19, the ninth channel 25 and the outlet channel 20 in sequence, thereby achieving heat exchange and cooling with the lubricating oil and gears inside the gearbox body 1. Both the inlet channel 15 and the outlet channel 20 are equipped with water inlets 26 at their outer ends to connect with water connectors. The outer ends of the first water channel 16, the second water channel 17, the third water channel 18, and the fourth water channel 19 are all connected to the outside of the gearbox body 1. The outer ends of the first water channel 16, the second water channel 17, the third water channel 18, and the fourth water channel 19 are equipped with first sealing ports 27 to facilitate sealing of the outer ends of the first water channel 16, the second water channel 17, the third water channel 18, and the fourth water channel 19 during operation to prevent leakage. The upper left reinforcing rib 4 is located on the extension of the fifth water channel 21 and the left side. Second sealing openings 28 are provided in the extension sections of the sixth waterway 22, the lower right reinforcing rib 9, the middle right reinforcing rib 7, the eighth waterway 24, and the upper right reinforcing rib 5, the ninth waterway 25. These openings allow the opening of the fifth waterway 21, the sixth waterway 22, the seventh waterway 23, the eighth waterway 24, and the ninth waterway 25. At the same time, the second sealing openings 28 allow the sealing of the fifth waterway 21, the sixth waterway 22, the seventh waterway 23, the eighth waterway 24, and the ninth waterway 25 during operation.

[0018] Installation method and operating principle: The gearbox body 1 is made by casting process. Then, water channels are opened from the outside to the inside along the upper left reinforcing rib 4, the upper right reinforcing rib 5, the middle left reinforcing rib 6, the middle right reinforcing rib 7, the lower left reinforcing rib 8, and the lower right reinforcing rib 9. Water inlet rib 15 and water outlet rib 20 are processed with water interface 26 at the outer end. The first water channel 16, the second water channel 17, the third water channel 18 and the fourth water channel 19 are processed with the first sealing port 27 at the outer end. Next, the fifth water channel 21 is opened from the upper left reinforcing rib 4 along the inner left connecting rib 10, the sixth water channel 22 is opened from the middle left reinforcing rib 6 along the outer left connecting rib 11, the seventh water channel 23 is opened from the lower right reinforcing rib 9 along the inner lower connecting rib 12, the eighth water channel 24 is opened from the middle right reinforcing rib 7 along the outer right connecting rib 13, and the ninth water channel 25 is opened from the upper right reinforcing rib 5 along the inner right connecting rib 14. Then, the second sealing port 28 is opened at the corresponding end, and finally the screw hole 30 and the connecting hole 31 are opened to complete the processing. Before use, the gearbox body 1 is installed on the outer end of the front bearing housing of the twin-screw compressor. After the two sets of male and female rotors are installed, gears are installed on the outer ends of the primary female rotor, primary male rotor, secondary female rotor, and secondary male rotor. The gears of the primary female rotor and the primary male rotor mesh with each other, and the gears of the secondary female rotor and the secondary male rotor mesh with each other. The motor output shaft passes through the motor output shaft bearing hole 2 and mates with the bearing. At the same time, the motor output shaft is equipped with drive gears that mesh with the gears of the primary male rotor and the secondary male rotor, respectively, thus completing the installation. Before use, the two ends of the circulating water circuit are connected to the water inlet 15 and the water outlet 20 via the water inlet interface 26. Each first sealing port 27 and each second sealing port 28 is sealed with a sealing plug to prevent leakage. In use, circulating water for heat exchange is introduced from the inlet channel 15 according to the internal temperature of the gearbox body 1. The water then flows sequentially through the fifth channel 21, the first channel 16, the sixth channel 22, the second channel 17, the seventh channel 23, the third channel 18, the eighth channel 24, the fourth channel 19, the ninth channel 25, and the outlet channel 20, thus achieving heat exchange inside the gearbox. In cold regions, hot water can be used for heat exchange to preheat the gears and internal lubricating fluid. During long-term use, cold water can be used for heat exchange to prevent the gearbox from overheating.This utility model has a reasonable structure. The inner side of the gearbox body 1 is provided with a left upper end reinforcing rib 4, a right upper end reinforcing rib 5, a left middle reinforcing rib 6, a right middle reinforcing rib 7, a left lower end reinforcing rib 8, a right lower end reinforcing rib 9, a left inner side connecting rib 10, a left outer side connecting rib 11, a lower inner side connecting rib 12, a right outer side connecting rib 13, and a right inner side connecting rib 14. Water channels are opened inside each reinforcing rib and connecting rib. The structural strength of the gearbox body 1 is ensured by the reinforcing ribs and connecting ribs, while heat exchange is achieved inside the gearbox through circulating fluid. There is no need to set up a separate hot water exchange circuit. It is also convenient to process, saves space and cost. At the same time, the connecting ribs arranged at intervals inside and outside greatly improve the coverage of the water channels.

[0019] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0020] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gear box for a twin screw compressor with a water channel, characterized by: The gearbox includes a gearbox body (1), the inner side of which is provided with a cavity. A motor output shaft bearing hole (2) is provided at the center of the gearbox body (1). A cylinder (3) is provided on the inner side of the gearbox body (1) at the location of the motor output shaft bearing hole (2). The gearbox body (1) has a left upper end reinforcing rib (4), a right upper end reinforcing rib (5), a left middle reinforcing rib (6), a right middle reinforcing rib (7), a left lower end reinforcing rib (8), and a right lower end reinforcing rib (9) located on the inner side of the gearbox body (1). The left upper end reinforcing rib (4) and the left middle reinforcing rib (6) are located close to the cylinder (3). The left inner connecting rib (10) is connected to the left middle reinforcing rib (6) and the left lower reinforcing rib (8) and the end away from the cylinder (3) is connected to the left outer connecting rib (11), the left lower reinforcing rib (8) and the right lower reinforcing rib (9) and the end close to the cylinder (3) are connected to the lower inner connecting rib (12), the right middle reinforcing rib (7) and the right lower reinforcing rib (9) and the end away from the cylinder (3) are connected to the right outer connecting rib (13), and the right middle reinforcing rib (7) and the right upper reinforcing rib (5) and the end close to the cylinder (3) are connected to the right inner connecting rib (14). The upper left reinforcing rib (4) has an inlet channel (15) along its length, the middle left reinforcing rib (6) has a first water channel (16) along its length, the lower left reinforcing rib (8) has a second water channel (17) along its length, the lower right reinforcing rib (9) has a third water channel (18) along its length, the middle right reinforcing rib (7) has a fourth water channel (19) along its length, the upper right reinforcing rib (5) has an outlet channel (20) along its length, the inner left connecting rib (10) has a fifth water channel (21) along its length, the outer left connecting rib (11) has a sixth water channel (22) along its length, the inner lower connecting rib (12) has a seventh water channel (23) along its length, the outer right connecting rib (13) has an eighth water channel (24) along its length, and the inner right connecting rib (14) has a ninth water channel (25) along its length.

2. A gear box for a twin screw compressor with water channel according to claim 1, characterized in that: The inlet channel (15) is connected to the first channel (16) via the fifth channel (21), the first channel (16) is connected to the second channel (17) via the sixth channel (22), the second channel (17) is connected to the third channel (18) via the seventh channel (23), the third channel (18) is connected to the fourth channel (19) via the eighth channel (24), and the fourth channel (19) is connected to the outlet channel (20) via the ninth channel (25).

3. A gear box for a twin screw compressor with water channel according to claim 1, characterized in that: The two ends of the left upper end reinforcing rib (4), right upper end reinforcing rib (5), left middle reinforcing rib (6), right middle reinforcing rib (7), left lower end reinforcing rib (8), and right lower end reinforcing rib (9) are all connected to the inner wall of the gearbox body (1) and the outer wall of the motor output shaft bearing hole (2).

4. A gear box for a twin screw compressor with water channel according to claim 1, characterized in that: Water inlets (26) are provided at the outer ends of both the inlet (15) and outlet (20).

5. A gear box for a twin screw compressor with water channel according to claim 1 characterized in that: The outer ends of the first waterway (16), the second waterway (17), the third waterway (18) and the fourth waterway (19) are all connected to the outside of the gearbox body (1), and the outer ends of the first waterway (16), the second waterway (17), the third waterway (18) and the fourth waterway (19) are all provided with a first sealing port (27).

6. A gear box for a twin screw compressor with water channel according to claim 1 characterized in that: The left upper reinforcing rib (4) is located in the extension of the fifth waterway (21), the left middle reinforcing rib (6) is located in the extension of the sixth waterway (22), the right lower reinforcing rib (9) is located in the extension of the seventh waterway (23), the right middle reinforcing rib (7) is located in the extension of the eighth waterway (24), and the right upper reinforcing rib (5) is located in the extension of the ninth waterway (25). All of these are provided with a second sealing port (28).

7. A gear box for a twin screw compressor with water channel according to claim 1 characterized in that: A boss (29) is provided on the inner side of the gearbox body (1) and on the outer side of the cylinder (3). Several screw holes (30) are provided on the outer side of the gearbox body (1) and on the boss (29).

8. A gear box for a twin screw compressor with water channel according to claim 1 characterized in that: The gearbox body (1) has several connecting holes (31) on its periphery.

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