Gear box for spray pump

Abstract

The utility model provides a gearbox for a spray pump, and belongs to the technical field of gearboxes. The gearbox solves the problems that a gearbox body in the existing market is lack of a lubricating structure, when the gearbox works, the friction coefficient of a gear is large, the gear is prone to abrasion, and the service life of the gearbox is shortened. The gearbox for the spray pump comprises an outer shell, a first transmission gear and a second transmission gear which are meshed with each other are arranged in the outer shell, a bearing is arranged on a shaft rod of the first transmission gear, an output end coaxially connected with the second transmission gear is arranged on the outer shell, an oil shell is fixedly arranged on the outer shell, and the oil shell is fixedly connected with the oil shell. A straight oil duct is arranged between the oil shell and the outer shell, an oil separation duct is formed in one side of the straight oil duct, and an oil immersion cotton net is fixedly arranged at an oil outlet of the straight oil duct. The gear box has the advantages that friction between gears is reduced, abrasion of the gears is reduced, noise is reduced, and the service life of the gear box is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear boxes, and particularly relates to a gear box for a jet pump. Background Art

[0002] A jet pump, also known as a water jet propulsion pump, is a device that generates thrust by spraying water. The gearbox is an important component of the jet pump system. It mainly plays the role of transmitting power, reducing speed and increasing torque. Through the transmission of the gearbox, the high-speed and low-torque power output by the engine can be converted into the low-speed and high-torque power required by the jet pump to meet the working needs of the jet pump.

[0003] The existing gearbox on the market lacks a lubrication structure on the main body. When the gearbox is working, the gear friction coefficient is large, which easily causes gear wear and shortens the service life of the gearbox. In addition, the large gear friction coefficient will produce loud noise, causing noise pollution. Therefore, it is of great significance to design a gearbox for a jet pump. Summary of the invention

[0004] The utility model aims to provide a gear box for a jet pump in view of the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a gear box for a spray pump, characterized in that it includes a shell, a transmission gear 1 and a transmission gear 2 that mesh with each other are arranged in the shell, a bearing is arranged on the shaft of the transmission gear 1, an output end coaxially connected to the transmission gear 2 is arranged on the shell, an oil shell is fixedly arranged on the shell, a straight oil channel is arranged between the oil shell and the shell, an oil distribution channel is opened on one side of the straight oil channel, and an oil-immersed cotton net is fixedly arranged at the oil outlet of the straight oil channel.

[0006] In the above-mentioned gearbox for a jet pump, a limiting groove is provided at the oil inlet of the straight oil channel, an oil sealing plate is arranged in the limiting groove, a connecting rod connected to the oil sealing plate is slidably arranged in the oil shell, and an adjusting block fixedly connected to the connecting rod is arranged on the outside of the oil shell.

[0007] In the above-mentioned gear box for a jet pump, a spring is arranged between the oil sealing plate and the oil shell, and a limiting shell for limiting the spring is arranged inside the oil shell.

[0008] In the above-mentioned gear box for a jet pump, two symmetrical grooves are provided in the limit groove, and a positioning protrusion used in conjunction with the grooves is fixedly connected to the oil sealing plate.

[0009] In the above-mentioned gear box for a jet pump, an oil filling hole is provided on the oil shell, and a sealing plug is threadedly connected to the inner thread of the oil filling hole.

[0010] In the above-mentioned gear box for a jet pump, a driving motor connected to a shaft of the transmission gear is arranged on the housing.

[0011] Compared with the prior art, the gearbox of the jet pump is provided with an oil casing, and the bearings and gears are lubricated respectively through straight oil channels and oil distribution channels, which can reduce friction between gears, reduce gear wear, reduce noise, and extend the service life of the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the gear box for the jet pump.

[0013] Figure 2 It is a cross-sectional schematic diagram of the gear box for the jet pump.

[0014] Figure 3 This is the gear box for the jet pump Figure 2 Schematic diagram of the structure at A in the middle.

[0015] Figure 4 It is a structural schematic diagram of the gear box for the jet pump.

[0016] Figure 5 This is the gear box for the jet pump Figure 4 Schematic diagram of the structure at B in the figure.

[0017] In the figure, 1. outer shell; 2. transmission gear 1; 3. transmission gear 2; 4. bearing; 5. output end; 6. oil shell; 7. straight oil channel; 8. oil distribution channel; 9. oil-soaked cotton net; 10. limit groove; 11. oil sealing plate; 12. connecting rod; 13. adjusting block; 14. spring; 15. limit shell; 16. groove; 17. positioning protrusion; 18. oil filling hole; 19. sealing plug; 20. driving motor. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 , 2As shown in Figures 3, 4 and 5, the gearbox for the jet pump comprises a shell 1, in which a transmission gear 1 2 and a transmission gear 2 3 meshing with each other are arranged, a bearing 4 is arranged on the shaft of the transmission gear 2, an output end 5 coaxially connected with the transmission gear 2 3 is arranged on the shell 1, an oil shell 6 is fixedly arranged on the shell 1, a straight oil passage 7 is arranged between the oil shell 6 and the shell 1, an oil distribution passage 8 is opened on one side of the straight oil passage 7, an oil-immersed cotton net 9 is fixedly arranged at the oil outlet of the straight oil passage 7, lubricating oil is injected into the oil shell 6, the oil can lubricate the bearing 4 through the straight oil passage 7, the oil-immersed cotton net 9 can reduce the oil outlet rate of the straight oil passage 7, and can make part of the oil enter the oil distribution passage 8, the oil can lubricate the meshing part of the transmission gear 1 2 and the transmission gear 2 3 through the oil distribution passage 8, thereby reducing the friction between the gears and reducing the noise.

[0020] Preferably, a limiting groove 10 is provided at the oil inlet of the straight oil channel 7, an oil sealing plate 11 is arranged in the limiting groove 10, a connecting rod 12 connected to the oil sealing plate 11 is slidably arranged in the oil shell 6, and an adjusting block 13 fixedly connected to the connecting rod 12 is arranged on the outer side of the oil shell 6. When the gear box is working, the adjusting block 13 is pulled through the connecting rod 12 to make the oil sealing plate 11 disengage from the limiting groove 10 and then rotated to open the straight oil channel 7 to allow oil to enter. When the gear box is not working, the adjusting block 13 is rotated to make the oil sealing plate 11 located in the limiting groove 10 to close the straight oil channel 7. The position of the oil sealing plate 11 is kept stable by the spring 14 to avoid waste of oil. The connecting rod 12 and the oil shell 6 are always in a sealed state, and oil leakage will not occur.

[0021] Preferably, a spring 14 is provided between the oil sealing plate 11 and the oil shell 6, and a limiting shell 15 for limiting the spring 14 is provided in the oil shell 6. The spring 14 can apply a squeezing force to the oil sealing plate 11 to keep the state of the oil sealing plate 11 stable.

[0022] Preferably, two symmetrical grooves 16 are formed in the limiting groove 10 , and a positioning protrusion 17 used in conjunction with the groove 16 is fixedly connected to the oil sealing plate 11 . The positioning protrusion 17 and the groove 16 are used to position the oil sealing plate 11 .

[0023] Preferably, an oil filling hole 18 is opened on the oil casing 6, and a sealing plug 19 is connected to the inner thread of the oil filling hole 18.

[0024] Preferably, a driving motor 20 connected to the transmission gear 1-2 shaft is provided on the housing 1.

[0025] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0026] Although this article uses more terms such as housing 1, transmission gear 1 2, transmission gear 2 3, bearing 4, output end 5, oil shell 6, straight oil channel 7, oil distribution channel 8, oil-soaked cotton net 9, limit groove 10, oil sealing plate 11, connecting rod 12, adjustment block 13, spring 14, limit shell 15, groove 16, positioning convex block 17, oil filling hole 18, sealing plug 19, driving motor 20, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A gear box for a jet pump, characterized in that: The invention comprises a housing (1), wherein a transmission gear 1 (2) and a transmission gear 2 (3) meshing with each other are arranged in the housing (1), a bearing (4) is arranged on the shaft of the transmission gear 1 (2), an output end (5) coaxially connected to the transmission gear 2 (3) is arranged on the housing (1), an oil shell (6) is fixedly arranged on the housing (1), a straight oil passage (7) is arranged between the oil shell (6) and the housing (1), an oil distribution passage (8) is opened on one side of the straight oil passage (7), and an oil-soaked cotton net (9) is fixedly arranged at the oil outlet of the straight oil passage (7).

2. A gearbox for a jet pump according to claim 1, characterized in that: The oil inlet of the straight oil passage (7) is provided with a limit groove (10), an oil sealing plate (11) is arranged in the limit groove (10), a connecting rod (12) connected to the oil sealing plate (11) is slidably arranged in the oil shell (6), and an adjustment block (13) fixedly connected to the connecting rod (12) is arranged on the outside of the oil shell (6).

3. A gearbox for a jet pump according to claim 2, characterized in that: A spring (14) is arranged between the oil sealing plate (11) and the oil casing (6), and a limiting casing (15) for limiting the position of the spring (14) is arranged inside the oil casing (6).

4. A gearbox for a jet pump according to claim 2, characterized in that: Two symmetrical grooves (16) are provided in the limiting groove (10), and a positioning protrusion (17) for use with the grooves (16) is fixedly connected to the oil sealing plate (11).

5. The gearbox for a jet pump according to claim 1, characterized in that: The oil casing (6) is provided with an oil filling hole (18), and the oil filling hole (18) is internally threadedly connected to a sealing plug (19).

6. A gearbox for a jet pump according to claim 1, characterized in that: The housing (1) is provided with a driving motor (20) connected to the shaft of the transmission gear 1 (2).

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