A planetary gearbox for an oxygenator

Abstract

This utility model discloses a planetary gearbox for an aerator, comprising a housing, a planetary drive assembly, an output shaft, and a fixed flange. The planetary drive assembly and the output shaft are located within the housing, and the output shaft is connected to the planetary drive assembly. The fixed flange is located at the outer end of the housing and is sleeved and fixed to the periphery of the output shaft. An anti-ingress component is provided between the housing and the fixed flange. The anti-ingress component includes a trapezoidal annular groove and an embedded annular block. The embedded annular block is inserted into the trapezoidal annular groove, and the trapezoidal annular groove and the embedded annular block are respectively located at opposite ends of the housing and the fixed flange. This application has the effect of improving the service life of the aerator.

Description

Technical Field

[0001] This application relates to the field of aerator technology, and in particular to a planetary gearbox for an aerator. Background Technology

[0002] The large amounts of excrement from fish and other organisms in fishponds that accumulate at the bottom produce harmful gases such as ammonia, biogas, and hydrogen sulfide, which dissolve in the pond water, creating a saturated solution of these gases. Aerators are essential equipment in aquaculture, playing a vital role in the survival and growth of fish and shrimp. They improve water quality and increase dissolved oxygen levels. A planetary gearbox consists of a housing, a planetary drive assembly, an output shaft, and a fixed flange. The planetary drive assembly is located inside one end of the housing, and one end of the output shaft is connected to it. The fixed flange is fixed to the other end of the output shaft and fits against one end of the housing. The planetary drive assembly is connected to the motor shaft, and the fixed flange is fixedly connected to the impeller. When the impeller operates in the water, fishing lines and other entangled objects can wrap around the output shaft through the gap between the fixed flange and the housing and enter the housing, damaging internal seals and reducing the aerator's lifespan. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of the existing technology by providing a planetary gearbox for an oxygenator.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The device includes a housing, a planetary drive assembly, an output shaft, and a fixed flange. The planetary drive assembly and the output shaft are located inside the housing, and the output shaft is connected to the planetary drive assembly. The fixed flange is located at the outer end of the housing and is sleeved and fixed to the periphery of the output shaft. An anti-intrusion component is provided between the housing and the fixed flange. The anti-intrusion component includes a trapezoidal annular groove and an embedded annular block. The embedded annular block is inserted into the trapezoidal annular groove. The trapezoidal annular groove and the embedded annular block are respectively located at opposite ends of the housing and the fixed flange.

[0006] Preferably, the outlet end of the trapezoidal annular groove is flush with the outer end of the embedded annular block.

[0007] Preferably, the trapezoidal annular groove is formed on the inner circumference of one end of the outer shell, and the embedded annular block is disposed on the inner end of the fixed flange.

[0008] Preferably, the trapezoidal annular groove is formed on the inner circumferential side of the inner end of the fixed flange, and the embedded annular block is disposed at one end of the outer shell.

[0009] Preferably, the output shaft is fitted with a mechanical seal.

[0010] Preferably, two tapered roller bearings are sleeved and fixed on the circumferential side of the output shaft, and the outer circumferential side of the tapered roller bearings is engaged with the inner circumferential side of the housing.

[0011] Preferably, the outer casing includes a first housing and a second housing, one end of the first housing is fixed to one end of the second housing, and the planetary drive assembly is located inside the first housing.

[0012] In summary, the beneficial technical effects of this application are as follows:

[0013] After the gearbox is assembled, one end of the fixed flange contacts one end of the outer casing. At this time, the embedded ring block is inserted into the trapezoidal annular groove. When the aerator is in operation, the gap between the embedded ring block and the trapezoidal annular groove is vertical. Since the outlet end of the trapezoidal groove is flush with the outer end of the embedded ring block, the motor drives the output shaft to rotate through the planetary drive assembly, thereby driving the fixed flange to rotate. When there is entanglement in the water, the entanglement will wrap around the periphery of the outer casing or the fixed flange. Because the gap between the embedded ring block and the trapezoidal annular groove is vertical, the entanglement will not enter the output shaft through the gap between the embedded ring block and the trapezoidal annular groove and affect the seals, thus improving the service life of the aerator. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the gearbox in Embodiment 1;

[0015] Figure 2 This is a cross-sectional schematic diagram of the gearbox in Embodiment 2.

[0016] In the diagram: 1. Housing; 2. Planetary drive assembly; 3. Output shaft; 4. Fixed flange; 5. Input sun gear; 6. Planetary gear; 7. First housing; 8. Second housing; 9. Tapered roller bearing; 10. Locking nut; 11. Anti-reverse washer; 12. Sealing assembly; 13. Bushing; 14. Skeleton oil seal; 15. Mechanical seal; 16. Dynamic sealing ring; 17. Static sealing ring; 18. Bracket; 19. Locking spring; 20. Anti-ingress component; 21. Trapezoidal ring groove; 22. Embedded ring block. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] This application discloses a planetary gearbox for an oxygenator.

[0019] Example 1

[0020] Reference Figure 1It includes a housing 1, a planetary drive assembly 2, an output shaft 3 and a fixed flange 4. The vertical cross-section of the housing 1 is convex. The housing 1 has an installation cavity. The planetary drive assembly 2, the output shaft 3 and the fixed flange 4 are located in the installation cavity of the housing 1.

[0021] The planetary drive assembly 2 includes an input sun gear 5 and multiple planetary gears 6. The multiple planetary gears 6 are evenly placed on the inner circumferential side of the housing 1. One end of the input sun gear 5 is inserted between the multiple planetary gears 6 and meshes with the planetary gears 6. The circumferential side of the planetary gears 6 meshes with the inner circumferential side of the housing 1. The rotation shaft of the multiple planetary gears 6 is fixed in the side wall of one end of the output shaft 3.

[0022] The outer casing 1 includes a first housing 7 and a second housing 8. One end of the second housing 8 is fixed to one end of the first housing 7 by bolts. The planetary drive assembly 2 is located inside the first housing 7. Two tapered roller bearings 9 are placed inside the first housing 7. The two tapered roller bearings 9 are respectively sleeved and fixed to the periphery of the output shaft 3. The outer periphery of the tapered roller bearings 9 is fixed to the inner periphery of the first housing 7. A locking nut 10 is threadedly connected to the periphery of the output shaft 3. A backlash washer 11 is provided between the locking nut 10 and one of the tapered roller bearings 9.

[0023] The second housing 8 contains a sealing assembly 12, which includes a bushing 13 and two skeleton oil seals 14. The bushing 13 is fitted around the periphery of the output shaft 3, and the two skeleton oil seals 14 are fitted around the outer periphery of the bushing 13. The outer periphery of the skeleton oil seals 14 abuts against the inner periphery of the second housing 8.

[0024] A mechanical seal 15 is placed inside the second housing 8. The mechanical seal 15 includes a dynamic sealing ring 16, a static sealing ring 17, a bracket 18, and a locking spring 19. The dynamic sealing ring 16 and the static sealing ring 17 are fitted together, with the static sealing ring 17 fitting against the inner circumference of the second housing 8. The bracket 18 is sleeved on the circumference of the output shaft 3. The locking spring 19 is located between the dynamic sealing ring 16 and the bracket 18, with one end of the locking spring 19 abutting against one end of the dynamic sealing ring 16 and the other end abutting against the side wall of the bracket 18. The sealing assembly 12 and the mechanical seal 15 are located inside the two ends of the second housing 8, respectively.

[0025] The fixed flange 4 is fitted around the outer end of the output shaft 3, and then the fixed flange 4 is fixed to the output shaft 3 by the cooperation of bolts and gaskets, so that one end of the fixed flange 4 abuts against one end of the second housing 8.

[0026] An anti-intrusion component 20 is provided between the second housing 8 and the fixed flange 4. The anti-intrusion component 20 includes a trapezoidal annular groove 21 and an embedded ring block 22. The trapezoidal annular groove 21 is opened on the inner circumference of the outer end of the second housing 8. The embedded ring block 22 is integrally provided on the inner end of the fixed flange 4. The embedded ring block 22 is embedded in the trapezoidal annular groove 21. The outer end face of the second housing 8 and the outer end face of the embedded ring block 22 are flush with each other.

[0027] Example 2

[0028] Reference Figure 2 The difference from Embodiment 1 is that the trapezoidal annular groove 21 is opened on one end face of the fixed flange 4, and the embedded ring block 22 is integrally disposed on one end of the second housing 8. The inner end face of the fixed flange 4 and the outer end face of the embedded ring block 22 are flush with each other.

[0029] The implementation principle of a planetary gearbox for an oxygenator disclosed in this application is as follows:

[0030] After the gearbox is assembled, one end of the fixed flange 4 contacts one end of the outer shell 1. At this time, the embedded ring block 22 is inserted into the trapezoidal ring groove 21. When the aerator is in working condition, the gap between the embedded ring block 22 and the trapezoidal ring groove 21 is vertical. Since the outlet end of the trapezoidal groove is flush with the outer end of the embedded ring block 22, the motor drives the output shaft 3 to rotate through the planetary drive assembly 2, thereby driving the fixed flange 4 to rotate. When there is entanglement in the water, the entanglement will wrap around the periphery of the outer shell 1 or the fixed flange 4. Since the gap between the embedded ring block 22 and the trapezoidal ring groove 21 is vertical, the entanglement will not enter the output shaft 3 through the gap between the embedded ring block 22 and the trapezoidal ring groove 21 and affect the seal.

[0031] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. An oxygenator planetary reduction gearbox, comprising a housing (1), a planetary drive assembly (2), an output shaft (3) and a fixing flange (4), wherein the planetary drive assembly (2) and the output shaft (3) are located in the housing (1), the output shaft (3) is connected with the planetary drive assembly (2), and the fixing flange (4) is located at the outer end of the housing (1) and is sleeved and fixed to the circumferential side of the output shaft (3), characterized in that: An anti-intrusion component (20) is provided between the outer shell (1) and the fixed flange (4). The anti-intrusion component (20) includes a trapezoidal annular groove (21) and an embedded ring block (22). The embedded ring block (22) is inserted into the trapezoidal annular groove (21). The trapezoidal annular groove (21) and the embedded ring block (22) are respectively located at opposite ends of the outer shell (1) and the fixed flange (4). ​ 2. The planetary gearbox for an aerator according to claim 1, characterized in that, The outlet end of the trapezoidal annular groove (21) is flush with the outer end of the embedded annular block (22).

3. A planetary gearbox for an oxygenator according to claim 1, characterized in that, The trapezoidal annular groove (21) is opened on the inner circumference side of one end of the outer shell (1), and the embedded ring block (22) is disposed on the inner end of the fixed flange (4).

4. A planetary gearbox for an aerator according to claim 1, characterized in that, The trapezoidal annular groove (21) is opened on the inner circumferential side of the inner end of the fixed flange (4), and the embedded ring block (22) is disposed at one end of the outer shell (1).

5. A planetary gearbox for an aerator according to claim 1, characterized in that, The output shaft (3) is fitted with a mechanical seal (15).

6. A planetary gearbox for an aerator according to claim 1, characterized in that, Two tapered roller bearings (9) are fixedly sleeved on the circumferential side of the output shaft (3), and the outer circumferential side of the tapered roller bearings (9) is locked to the inner circumferential side of the housing (1).

7. A planetary gearbox for an aerator according to claim 1, characterized in that... The outer shell (1) includes a first shell (7) and a second shell (8), one end of the first shell (7) is fixed to one end of the second shell (8), and the planetary drive assembly (2) is located inside the first shell (7).

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