Gearbox with water channel for double-screw compressor

Abstract

The invention discloses a gearbox with a water channel for a double-screw compressor. 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 side connecting rib, a left outer side connecting rib, a lower end inner side connecting rib, a right outer side connecting rib and a right inner side connecting rib are arranged on the inner side face of the gearbox body. Water channels which are communicated with one another are formed in the reinforcing ribs and the connecting ribs, the structural strength of the gear box body is guaranteed through the reinforcing ribs and the connecting ribs, meanwhile, heat exchange in the gear box can be achieved through circulating liquid, a heat exchange water channel does not need to be additionally arranged, machining is convenient, and space and cost are saved. Meanwhile, through the connecting ribs arranged at intervals inside and outside, the coverage range of the water channel is greatly enlarged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressor gear box, in particular to a gear box with water channel for double-screw compressor. BACKGROUND

[0002] For double-screw compressor, the gear box is a kind of transmission component like heart, and the design and manufacturing level of the gear box directly determines the performance, efficiency and reliability of the compressor. The double-screw compressor has two parallel screws, i.e. male rotor and female rotor. They need to realize the compression of gas through precise synchronous rotation. The core role of the gear box is to synchronously drive, transmit power, bear load and ensure efficiency.

[0003] In order to ensure the service life of the gear, the gear box is generally subjected to heat dissipation treatment. The existing gear box for double-screw compressor generally installs an independent water channel, which increases the space and cost. Therefore, an improved technology is urgently needed to solve the above problem in the prior art. SUMMARY

[0004] The present application aims to provide a gear box with water channel for double-screw compressor to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a gear box with water channel for double-screw compressor, comprising a gear box main body, wherein an inner side surface of the gear box main body is provided with a cavity, a motor output shaft bearing hole is arranged at a center position of the gear box main body, a cylinder is arranged at the inner side surface of the gear box main body and located at the motor output shaft bearing hole, left upper end reinforcing ribs, right upper end reinforcing ribs, left middle reinforcing ribs, right middle reinforcing ribs, left lower end reinforcing ribs and right lower end reinforcing ribs are arranged in the inner side surface of the gear box main body, a left inner side connecting rib is connected between the left upper end reinforcing ribs and the left middle reinforcing ribs and close to one end of the cylinder, a left outer side connecting rib is connected between the left middle reinforcing ribs and the left lower end reinforcing ribs and away from the other end of the cylinder, an inner side connecting rib of lower end is connected between the left lower end reinforcing ribs and the right lower end reinforcing ribs and close to one end of the cylinder, a right outer side connecting rib is connected between the right middle reinforcing ribs and the right lower end reinforcing ribs and away from the other end of the cylinder, a right inner side connecting rib is connected between the right middle reinforcing ribs and the right upper end reinforcing ribs and close to one end of the cylinder. The left upper end reinforcing rib is internally provided with a water inlet channel along the length direction, the left middle reinforcing rib is internally provided with a first water channel along the length direction, the left lower end reinforcing rib is internally provided with a second water channel along the length direction, the right lower end reinforcing rib is internally provided with a third water channel along the length direction, the right middle reinforcing rib is internally provided with a fourth water channel along the length direction, the right upper end reinforcing rib is internally provided with a water outlet channel along the length direction, the left inner connecting rib is internally provided with a fifth water channel along the length direction, the left outer connecting rib is internally provided with a sixth water channel along the length direction, the lower end inner connecting rib is internally provided with a seventh water channel along the length direction, the right outer connecting rib is internally provided with an eighth water channel along the length direction, and the right inner connecting rib is internally provided with a ninth water channel along the length direction.

[0006] Preferably, the gear box with water channels for a double screw compressor provided by the present application, wherein the water inlet channel and the first water channel are communicated with each other through the fifth water channel, the first water channel and the second water channel are communicated with each other through the sixth water channel, the second water channel and the third water channel are communicated with each other through the seventh water channel, the third water channel and the fourth water channel are communicated with each other through the eighth water channel, and the fourth water channel and the water outlet channel are communicated with each other through the ninth water channel.

[0007] Preferably, the gear box with water channels for a double screw compressor provided by the present application, wherein the two ends of the left upper end reinforcing rib, the right upper end reinforcing rib, the left middle reinforcing rib, the right middle reinforcing rib, the left lower end reinforcing rib and the right lower end reinforcing rib are connected with the inner wall of the gear box body and the outer wall of the motor output shaft bearing hole.

[0008] Preferably, the gear box with water channels for a double screw compressor provided by the present application, wherein the water inlet channel and the water outlet channel are provided with waterway interfaces at the outer ends.

[0009] Preferably, the gear box with water channels for a double screw compressor provided by the present application, wherein the outer ends of the first water channel, the second water channel, the third water channel and the fourth water channel are communicated with each other, and the outer ends of the first water channel, the second water channel, the third water channel and the fourth water channel are provided with first plugging openings.

[0010] Preferably, the gear box with water channels for a double screw compressor provided by the present application, wherein the left upper end reinforcing rib is provided with a second plugging opening at the extension section of the fifth water channel, the left middle reinforcing rib is provided with a second plugging opening at the extension section of the sixth water channel, the right lower end reinforcing rib is provided with a second plugging opening at the extension section of the seventh water channel, the right middle reinforcing rib is provided with a second plugging opening at the extension section of the eighth water channel, and the right upper end reinforcing rib is provided with a second plugging opening at the extension section of the ninth water channel.

[0011] Preferably, the gear box with water channel for double screw compressor provided by the present application, wherein the boss is arranged on the inner side of the gear box body and at the periphery of the cylinder, and a plurality of screw holes are arranged on the outer side of the gear box body and at the boss.

[0012] Preferably, the gear box with water channel for double screw compressor provided by the present application, wherein a plurality of connecting holes are arranged on the periphery of the gear box body.

[0013] Compared with the prior art, the present application has the following beneficial effects: The inner side of the gear box 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 connecting rib, a left outer connecting rib, a lower end inner connecting rib, a right outer connecting rib, and a right inner connecting rib, and a water channel is arranged in each reinforcing rib and connecting rib and communicates with each other, so that the structural strength of the gear box body is ensured, and the heat exchange in the gear box is realized through circulating liquid, without the need for additional heat exchange water channel, and the processing is convenient, the space and cost are saved, and the coverage of the water channel is greatly improved through the inner and outer spaced connecting ribs. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the present application; Figure 2 is a sectional structural schematic view of the present application at the water channel; Figure 3 is a structural schematic view of the present application from above; Figure 4 is an angle transformation structural schematic view of the present application. Figure 1

[0015] In the figure: gear box body 1, motor output shaft bearing hole 2, cylinder 3, 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, right lower end reinforcing rib 9, left inner connecting rib 10, left outer connecting rib 11, lower end inner connecting rib 12, right outer connecting rib 13, right inner connecting rib 14, water inlet channel 15, first water channel 16, second water channel 17, third water channel 18, fourth water channel 19, water outlet channel 20, fifth water channel 21, sixth water channel 22, seventh water channel 23, eighth water channel 24, ninth water channel 25, water channel interface 26, first plugging hole 27, second plugging hole 28, boss 29, screw hole 30, connecting hole 31. DETAILED DESCRIPTION

[0016] ​The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application. It should be noted that, in the description of the present application, it should be noted that the terms "inner", "outer", "upper", "lower", "two sides", "one end", "the other end", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0017] Please refer to Figures 1-4 The present application provides a technical solution: a gear box for a double screw compressor with a water channel, comprising a gear box body 1, a cavity is provided on the inner side of the gear box body 1, a motor output shaft bearing hole 2 is provided at the center position of the gear box body 1, a cylinder 3 is provided on the inner side of the gear box body 1 at the motor output shaft bearing hole 2, 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 are provided on the inner side of the gear box body 1, both ends of the left upper end reinforcing rib 4, the right upper end reinforcing rib 5, the left middle reinforcing rib 6, the right middle reinforcing rib 7, the left lower end reinforcing rib 8 and the right lower end reinforcing rib 9 are connected with the inner wall of the gear box body 1 and the outer wall of the motor output shaft bearing hole 2, so as to ensure the support of each reinforcing rib and the structural strength of the gear box body 1 and the motor output shaft bearing hole 2, a boss 29 is provided on the inner side of the gear box body 1 and at the periphery of the cylinder 3, so as to ensure the structural strength at the cylinder 3 and the thickness for the opening of the screw hole 30, a plurality of screw holes 30 are provided on the outer side of the gear box body 1 and at the boss 29, so as to realize the fastening connection with the annular sealing element, a left inner side connecting rib 10 is connected between the left upper end reinforcing rib 4 and the left middle reinforcing rib 6 and close to one end of the cylinder 3, a left outer side connecting rib 11 is connected between the left middle reinforcing rib 6 and the left lower end reinforcing rib 8 and away from one end of the cylinder 3, a lower end inner side connecting rib 12 is connected between the left lower end reinforcing rib 8 and the right lower end reinforcing rib 9 and close to one end of the cylinder 3, a right outer side connecting rib 13 is connected between the right middle reinforcing rib 7 and the right lower end reinforcing rib 9 and away from one end of the cylinder 3, a right inner side connecting rib 14 is connected between the right middle reinforcing rib 7 and the right upper end reinforcing rib 5 and close to one end of the cylinder 3, a plurality of connecting holes 31 are provided on the periphery of the gear box body 1, so as to realize the fastening connection with the front end bearing seat of the double screw compressor; The left upper end reinforcing rib 4 is internally provided with a water inlet channel 15 extending in the length direction, the left middle reinforcing rib 6 is internally provided with a first water channel 16 extending in the length direction, the left lower end reinforcing rib 8 is internally provided with a second water channel 17 extending in the length direction, the right lower end reinforcing rib 9 is internally provided with a third water channel 18 extending in the length direction, the right middle reinforcing rib 7 is internally provided with a fourth water channel 19 extending in the length direction, the right upper end reinforcing rib 5 is internally provided with a water outlet channel 20 extending in the length direction, the left inner connecting rib 10 is internally provided with a fifth water channel 21 extending in the length direction, the left outer connecting rib 11 is internally provided with a sixth water channel 22 extending in the length direction, the lower end inner connecting rib 12 is internally provided with a seventh water channel 23 extending in the length direction, the right outer connecting rib 13 is internally provided with an eighth water channel 24 extending in the length direction, and the right inner connecting rib 14 is internally provided with a ninth water channel 25 extending in the length direction; The water inlet channel 15 is communicated with the first water channel 16 through the fifth water channel 21, the first water channel 16 is communicated with the second water channel 17 through the sixth water channel 22, the second water channel 17 is communicated with the third water channel 18 through the seventh water channel 23, the third water channel 18 is communicated with the fourth water channel 19 through the eighth water channel 24, and the fourth water channel 19 is communicated with the water outlet channel 20 through the ninth water channel 25, so as to ensure that the circulating water can pass through the fifth water channel 21, the first water channel 16, the sixth water channel 22, the second water channel 17, the seventh water channel 23, the third water channel 18, the eighth water channel 24, the fourth water channel 19, the ninth water channel 25 and the water outlet channel 20 in sequence, thereby realizing heat exchange and cooling with the lubricating oil and the gear inside the gear box body 1; The water inlet channel 15 and the water outlet channel 20 are both provided with a water channel interface 26 at the outer end, so as to realize mutual connection with a water channel connector; 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 communicated with the outside of the gear box body 1, and 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 provided with a first plugging opening 27, so as to facilitate plugging 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 work, thereby avoiding liquid leakage; the left upper end reinforcing rib 4 is provided with a second plugging opening 28 at the extension section of the fifth water channel 21, the left middle reinforcing rib 6 is provided with a second plugging opening 28 at the extension section of the sixth water channel 22, the right lower end reinforcing rib 9 is provided with a second plugging opening 28 at the extension section of the seventh water channel 23, the right middle reinforcing rib 7 is provided with a second plugging opening 28 at the extension section of the eighth water channel 24, and the right upper end reinforcing rib 5 is provided with a second plugging opening 28 at the extension section of the ninth water channel 25, so as to realize the provision of the fifth water channel 21, the sixth water channel 22, the seventh water channel 23, the eighth water channel 24 and the ninth water channel 25, and realize plugging of the fifth water channel 21, the sixth water channel 22, the seventh water channel 23, the eighth water channel 24 and the ninth water channel 25 during work through the second plugging openings 28.

[0018] Installation method and principle: the gear box body 1 is prepared by casting process, then the water channel is opened from outside to inside along the left upper end reinforcement 4, the right upper end reinforcement 5, the left middle reinforcement 6, the right middle reinforcement 7, the left lower end reinforcement 8 and the right lower end reinforcement 9 by hole opening equipment, the water inlet 15 and the water outlet 20 are processed, the waterway interface 26 is processed at the outer end of the first water channel 16, the second water channel 17, the third water channel 18 and the fourth water channel 19, then the fifth water channel 21 is opened along the left inner connecting rib 10 from the left upper end reinforcement 4, the sixth water channel 22 is opened along the left outer connecting rib 11 from the left middle reinforcement 6, the seventh water channel 23 is opened along the lower end inner connecting rib 12 from the right lower end reinforcement 9, the eighth water channel 24 is opened along the right outer connecting rib 13 from the right middle reinforcement 7, the ninth water channel 25 is opened along the right inner connecting rib 14 from the right upper end reinforcement 5, then the second blocking port 28 is opened at the corresponding end, finally the screw hole 30 and the connecting hole 31 are opened, and the processing is completed. Before use, the gear box body 1 is installed at the outer end of the double screw compressor front end bearing seat, after the installation of two groups of male and female rotors is completed, the gears are installed at the outer end of the first female rotor, the first male rotor, the second female rotor and the second male rotor, the gears of the first female rotor and the first male rotor are engaged with each other, the gears of the second female rotor and the second male rotor are engaged with each other, the output shaft of the motor passes through the motor output shaft bearing hole 2 and cooperates with the bearing, at the same time, the output shaft of the motor is provided with a driving gear and is engaged with the gears of the first male rotor and the second male rotor, and the installation is completed. Before use, the two ends of the circulating waterway are connected with the waterway interfaces 26 of the water inlet 15 and the water outlet 20 respectively, each first blocking port 27 and each second blocking port 28 are blocked by sealing plugs to avoid liquid leakage. When used, the circulating water for heat exchange can be sent into the water inlet 15 according to the internal temperature of the gear box body 1, then it passes through the fifth water channel 21, the first water channel 16, the sixth water channel 22, the second water channel 17, the seventh water channel 23, the third water channel 18, the eighth water channel 24, the fourth water channel 19, the ninth water channel 25 and the water outlet 20 in turn, so as to realize the heat exchange of the gear box interior. In cold regions, hot water can be used for heat exchange to preheat the gears and internal lubricating liquid, and in the long-term use process, cold water can be used for heat exchange to avoid high temperature in the gear box.The application has reasonable structure, the inside of the gear box main body 1 is provided with left side upper end reinforcing rib 4, right side upper end reinforcing rib 5, left side middle reinforcing rib 6, right side middle reinforcing rib 7, left side lower end reinforcing rib 8, right side lower end reinforcing rib 9, left side inside connecting rib 10, left side outside connecting rib 11, lower end inside connecting rib 12, right side outside connecting rib 13, right side inside connecting rib 14, and water channels are arranged in the inside of each reinforcing rib and connecting rib and communicated with each other, the structure strength of the gear box main body 1 is ensured through each reinforcing rib and connecting rib, and the heat exchange in the inside of the gear box can be realized through circulating liquid, the heat exchange water channel does not need to be additionally arranged, and the processing is convenient, the space and cost are saved, and the covering range of the water channel is greatly improved through the connecting ribs arranged in the inside and outside.

[0019] The part not described in the application is the known technology of the person skilled in the art.

[0020] Finally, it should be pointed out that the above specific embodiments are only used to illustrate the technical solutions of the application and not to limit the application, although the application is described in detail with reference to the embodiments, the person skilled in the art should understand that the technical solutions of the application can be modified and replaced equivalently without departing from the spirit and scope of the technical solutions of the application, and they should be covered in the claim scope of the application.

Claims

1. A gearbox for a twin-screw compressor with a water channel, characterized in that: 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. The gearbox for a twin-screw compressor with a 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. The gearbox for a twin-screw compressor with a 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. The gearbox for a twin-screw compressor with a 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 gearbox for a twin-screw compressor with a 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 gearbox for a twin-screw compressor with a 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 gearbox for a twin-screw compressor with a 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 periphery of the cylinder (3), and several screw holes (30) are provided on the outer side of the gearbox body (1) and on the boss (29).

8. A gearbox for a twin-screw compressor with a 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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