A new type of oxygenator motor shaft sealing device

Abstract

The utility model relates to an oxygen -increasing machine technical field especially relates to a novel oxygen -increasing machine motor shaft sealing device. Including static ring, the one end of static ring is provided with dynamic ring, the inside slide connection of dynamic ring one end has gland, be provided with spring between dynamic ring and gland, the inside of dynamic ring and located one end connection of gland has the cover piece, the inside of dynamic ring is located and is set up closed cavity in the one end of assembly cavity away from static ring, and the both sides in assembly cavity are fixed with the rotation stop block, the inside of dynamic ring and located the one end of assembly cavity away from static ring is set up closed cavity, and closed cavity is connected with the cover piece. The utility model provides a novel oxygen -increasing machine motor shaft sealing device, through the cooperation of static ring, dynamic ring, spring, gland and cover piece, can let the device when using, through the assembly cooperation of structure, realizes the water outside motor shaft and will not be immersed motor cavity, and through the angle adjustment of the contact surface of inner concave inclined plane and outer convex inclined plane, realizes the different sealing requirement of different products.

Description

Technical Field

[0001] This utility model relates to the field of aerator technology, and in particular to a novel aerator motor shaft sealing device. Background Technology

[0002] With the development of aquaculture in my country, aerators, as key equipment in the aquaculture process, play a vital role in the aquaculture effect due to their operational stability. An aerator mainly consists of a motor, motor shaft, impeller, and float. The motor shaft, as the crucial component connecting the motor and impeller, has its sealing performance essential for the normal operation of the aerator.

[0003] Currently, the existing aerator motor shaft sealing devices mainly adopt the following methods:

[0004] Ordinary sealing rings: This method has a simple structure, but the sealing effect is poor, it is easy to wear, and the service life is short.

[0005] Mechanical seals: Mechanical seals have a good sealing effect, but they have a complex structure and high installation and maintenance costs.

[0006] However, the existing sealing devices still have the following problems during long-term operation:

[0007] Poor sealing can easily lead to water ingress and oil leakage into the motor bearings, affecting the normal operation of the motor.

[0008] To address this issue, a novel aerator motor shaft sealing device is designed to provide a technical solution for the aforementioned technical problems. Utility Model Content

[0009] Therefore, it is necessary to provide a novel aerator motor shaft sealing device to address the aforementioned technical problems.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0011] A novel aerator motor shaft sealing device includes a stationary ring, a rotating ring at one end of the stationary ring, a pressure cap slidably connected to the inner side of one end of the rotating ring, a spring between the rotating ring and the pressure cap, and a cover plate connected to the inner side of the rotating ring and the end of the pressure cap.

[0012] In a preferred embodiment of the novel aerator motor shaft sealing device provided by this utility model, an assembly annular groove is provided inside the end of the stationary ring away from the moving ring.

[0013] In a preferred embodiment of the novel aerator motor shaft sealing device provided by this utility model, a protrusion is fixed at one end of the stationary ring near the moving ring, and an inwardly concave inclined surface is formed inside the protrusion at the end near the moving ring.

[0014] In a preferred embodiment of the novel aerator motor shaft sealing device provided by this utility model, the inner part of the moving ring near the stationary ring has an outwardly convex inclined surface, the stationary ring and the moving ring are slidably assembled through a protrusion, and the inner concave inclined surface and the outer convex inclined surface are in pressure contact.

[0015] In a preferred embodiment of the novel aerator motor shaft sealing device provided by this utility model, an assembly cavity is provided inside the end of the moving ring away from the stationary ring, and a rotation stop block is fixed on both sides inside the assembly cavity. A closing cavity is provided inside the moving ring at the end of the assembly cavity away from the stationary ring, and the closing cavity is connected to the cover plate.

[0016] In a preferred embodiment of the novel aerator motor shaft sealing device provided by this utility model, the diameter of the closed cavity is larger than the diameter of the assembly cavity.

[0017] In a preferred embodiment of the novel aerator motor shaft sealing device provided by this utility model, a limiting annular groove is formed inside the end of the pressure cover near the stationary ring. The limiting annular groove is connected to a spring. Rotation stop grooves are formed inside both sides of the pressure cover. The rotation stop grooves are connected to rotation stop blocks, thereby allowing the pressure cover to be tightly installed with the motor shaft. The rotation of the motor shaft drives the rotation of the pressure cover, which in turn drives the rotating ring to rotate through the rotation stop grooves on both sides.

[0018] In a preferred embodiment of the novel aerator motor shaft sealing device provided by this utility model, the cover plate is made of silicone.

[0019] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0020] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects:

[0021] This utility model provides a novel aerator motor shaft sealing device. Through the cooperation of a stationary ring, a moving ring, a spring, a pressure cap, and a cover plate, the device can prevent water from entering the motor cavity from the outside of the motor shaft during use. By adjusting the angle of the contact surfaces of the concave and convex inclined surfaces, different sealing requirements of different products can be met.

[0022] This invention, through the cooperation of the rotating stop block and the rotating stop groove, enables the pressure cap to be assembled inside the moving ring, and through the driving of the rotating stop block and the rotating stop groove, the pressure cap and the moving ring can rotate synchronously or stop synchronously. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is an exploded view of the present invention;

[0026] Figure 3 This is an exploded side view of the present invention;

[0027] Figure 4 This is a schematic diagram of the stationary ring structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the moving ring of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the rotating stop block of this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the pressure cap of this utility model.

[0031] In the diagram: 1. Stationary ring; 2. Moving ring; 3. Spring; 4. Pressure cap; 5. Cover plate; 6. Protrusion; 7. Inner concave slope; 8. Assembly annular groove; 9. Outer convex slope; 10. Assembly cavity; 11. Closed cavity; 12. Rotation stop block; 13. Limiting annular groove; 14. Rotation stop groove. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] Reference Figures 1-7 A novel aerator motor shaft sealing device includes a stationary ring 1, a rotating ring 2 at one end of the stationary ring 1, a pressure cap 4 slidably connected to the inner side of one end of the rotating ring 2, a spring 3 between the rotating ring 2 and the pressure cap 4, thereby restricting the operation of the spring 3 inside the rotating ring 2 by the pressure cap 4, and guiding the operation of the spring 3 by the pressure cap 4. A cover plate 5 is connected inside the rotating ring 2 and at one end of the pressure cap 4, and the cover plate 5 is connected to the outer side of the pressure cap 4.

[0037] Preferably, the cover 5 is made of silicone and is glued to the edge of the closed cavity 11 and the top step of the cover 4. The softness of the silicone cover 5 allows the spring 3 sealed inside to bounce.

[0038] The stationary ring 1 has an internal mounting annular groove 8 at the end away from the rotating ring 2, so that the stationary ring 1 can be mounted on the motor housing through the mounting annular groove 8, and then mounted on the motor shaft, so that the rotating ring 2 can rotate with the rotation of the motor shaft. The stationary ring 1 has a protrusion 6 fixed at the end near the rotating ring 2, so that the stationary ring 1 and the protrusion 6 are integrally formed into a stepped shape. The protrusion 6 has an internal concave inclined surface 7 at the end near the rotating ring 2, so that the internal concave inclined surface 7 is a concave frustum shape. The stationary ring 1 has a through hole, so that the motor shaft can enter the through hole of the rotating ring 2 through the through hole on the stationary ring 1, and reach the through hole of the pressure cover 4. The through hole of the pressure cover 4 is tightly installed with the motor shaft. The rotation of the motor shaft drives the pressure cover 4 to rotate, and the pressure cover 4 drives the rotating ring 2 to rotate through the rotation stop block 12.

[0039] The rotating ring 2 has an outwardly convex inclined surface 9 at one end near the stationary ring 1, making the outwardly convex inclined surface 9 a convex frustum shape. The stationary ring 1 and the rotating ring 2 are slidably assembled through the protrusion 6. The concave inclined surface 7 contacts the outwardly convex inclined surface 9, so that when the protrusion 6 on the stationary ring 1 is located inside the rotating ring 2, the outwardly convex inclined surface 9 and the concave inclined surface 7 form a frustum-shaped friction contact surface. This contact surface is pressed by the pressure of the spring 3, so water cannot leak through. This changes the angle of the conical contact surface to achieve different sealing requirements for different products.

[0040] An assembly cavity 10 is provided inside the end of the moving ring 2 away from the stationary ring 1. Rotation blocks 12 are fixed on both sides inside the assembly cavity 10, so that when the pressure cover 4 is located in the assembly cavity 10, the pressure cover 4 and the moving ring 2 can rotate synchronously. A closed cavity 11 is provided inside the moving ring 2 at the end of the assembly cavity 10 away from the stationary ring 1, and the diameter of the closed cavity 11 is larger than the diameter of the assembly cavity 10. The closed cavity 11 is connected to the cover plate 5, thereby assembling the cover plate 5 and the stationary ring 1 into a whole.

[0041] The pressure cap 4 has a limiting annular groove 13 inside near the stationary ring 1. The limiting annular groove 13 is slidably connected to the spring 3, so that the spring 3 can work inside the moving ring 2 through the guide of the limiting annular groove 13. The limiting annular groove 13 can also hide and press the spring 3. The pressure cap 4 has a rotation stop groove 14 inside on both sides. The rotation stop groove 14 is detachably connected to the rotation stop block 12, specifically, it can be slidably connected. When the pressure cap 4 slides into the assembly cavity 10, the rotation stop groove 14 is located outside the rotation stop block 12, so that the pressure cap 4 and the moving ring 2 can only rotate at the same time or remain stationary at the same time. This allows the pressure cap 4 to be tightly installed with the motor shaft. The rotation of the motor shaft drives the rotation of the pressure cap 4, which in turn drives the moving ring 2 to rotate through the rotation stop grooves 14 on both sides.

[0042] In this embodiment, the end of the pressure cap 4 away from the stationary ring 1 is stepped. The first step is used for positioning and installing the cover plate 5, and the second and third steps are used for filling structural adhesive to ensure that it has sufficient bonding strength with the inner wall of the moving ring 2 and the cover plate 5, so as to seal the water and prevent leakage.

[0043] In this embodiment, the stationary ring 1, the moving ring 2, and the pressure cap 4 are all made of polyoxymethylene (POM). POM has self-lubricating properties, and the motors used in the aquaculture industry have low speeds, making this POM material suitable.

[0044] The novel aerator motor shaft sealing device provided by this utility model is used as follows: During use, the stationary ring 1 and the moving ring 2 are assembled through a frustum-shaped friction contact surface formed by the outer convex inclined surface 9 and the inner concave inclined surface 7. Simultaneously, the spring 3 is installed inside the moving ring 2. Then, the pressure cap 4 is slidably assembled inside the moving ring 2, with the spring 3 positioned inside the limiting annular groove 13 on the pressure cap 4. The spring 3 can work inside the moving ring 2 guided by the limiting annular groove 13, and can also... Spring 3 is hidden and applies pressure, which presses the moving ring 2 against the stationary ring 1, preventing water leakage from the concave-convex truncated cone-shaped contact surface. At the same time, the pressure cap 4 is inside the moving ring 2 and is slidably connected to the rotating block 12 through the rotating stop groove 14. When the pressure cap 4 slides into the assembly cavity 10, the rotating stop groove 14 is located outside the rotating block 12, so that the pressure cap 4 and the moving ring 2 can only rotate at the same time or remain stationary at the same time. Then, the cover plate 5 is assembled inside the closed cavity 11, and the position of the pressure cap 4 inside the moving ring 2 is positioned by the cover plate 5.

[0045] During use, the stationary ring 1 is fixed, and a truncated cone-shaped contact strip with a width of 10-15mm and a smoothness of grade 0.32 is provided by the concave inclined surface 7. The moving ring 2 rotates with the motor shaft, and a convex conical friction rotation contact surface is provided by the convex inclined surface 9. At the same time, the moving ring 2 is pressed against the concave inclined surface 7 on the stationary ring 1 by the spring 3, so as to ensure that water outside the motor shaft will not seep into the motor cavity.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel aerator motor shaft sealing device, characterized in that, It includes a stationary ring (1), a moving ring (2) is provided at one end of the stationary ring (1), a pressure cap (4) is slidably connected to the inner side of one end of the moving ring (2), a spring (3) is provided between the moving ring (2) and the pressure cap (4), and a cover plate (5) is connected inside the moving ring (2) and at one end of the pressure cap (4).

2. The novel aerator motor shaft sealing device according to claim 1, characterized in that, The stationary ring (1) has an assembly annular groove (8) inside the end away from the moving ring (2).

3. The novel aerator motor shaft sealing device according to claim 1, characterized in that, The stationary ring (1) is fixed with a protrusion (6) at one end near the moving ring (2), and the protrusion (6) has an inwardly concave inclined surface (7) inside the end near the moving ring (2).

4. A novel aerator motor shaft sealing device according to claim 3, characterized in that, The moving ring (2) has an outwardly convex inclined surface (9) inside near the stationary ring (1). The stationary ring (1) and the moving ring (2) are slidably assembled through a protrusion (6). The concave inclined surface (7) and the outwardly convex inclined surface (9) are in pressure contact.

5. A novel aerator motor shaft sealing device according to claim 1, characterized in that, The moving ring (2) has an assembly cavity (10) inside the end away from the stationary ring (1). Both sides of the assembly cavity (10) are fixed with rotating blocks (12). The moving ring (2) has a closed cavity (11) inside the assembly cavity (10) away from the stationary ring (1). The closed cavity (11) is connected to the cover plate (5).

6. A novel aerator motor shaft sealing device according to claim 5, characterized in that, The diameter of the closed cavity (11) is larger than the diameter of the assembly cavity (10).

7. A novel aerator motor shaft sealing device according to claim 1, characterized in that, The pressure cap (4) has a limiting annular groove (13) inside the end near the stationary ring (1), the limiting annular groove (13) is connected to the spring (3), and the pressure cap (4) has a rotation stop groove (14) inside both sides, the rotation stop groove (14) is connected to the rotation stop block (12).

8. A novel aerator motor shaft sealing device according to claim 1, characterized in that, The cover plate (5) is made of silicone.

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