High-reliability sand-resistant double-end-face two-component sealing structure for submersible pump

Abstract

The utility model relates to the field of sealing structures, in particular to a sand-resistant double-end-face two-component sealing structure of a high-reliability submersible pump, which is characterized in that a movable ring is sleeved on a pump shaft, a detachable contact surface is mounted on the movable ring, and an outer ring is movably arranged on the movable ring; a plurality of clamping pieces are fixedly arranged on the side, facing the contact face, of the outer ring, clamping cavities corresponding to the clamping pieces are formed in the contact face in a matched mode, and a plurality of elastic air bags are arranged on the outer ring. According to the utility model, a modular structure is arranged between the outer ring and the contact surface, so that when the contact surface is seriously abraded due to sand flow, a user only needs to replace the contact surface without integrally replacing the moving ring, thereby reducing the maintenance cost of the moving ring.

Description

Technical Field

[0001] This utility model relates to the field of sealing structure technology, and in particular to a high-reliability submersible pump anti-sand type double-end face two-component sealing structure. Background Technology

[0002] The high-reliability submersible pump sand-resistant double-end face two-component seal structure is a submersible pump sealing structure specifically designed to cope with harsh working environments. It consists of two main components: a stationary ring and a rotating ring. The stationary ring is fixed to the pump body, while the rotating ring rotates with the pump shaft. The sealing effect is achieved between the two components through a tiny gap and the sealing medium.

[0003] When a submersible pump is working, the rotating ring rotates with the pump shaft, which means that the rotating ring is directly exposed to the scouring of the sand flow. This causes wear on the rotating ring, resulting in a decrease in its sealing performance or a shortened service life. Therefore, the rotating ring needs to be replaced regularly.

[0004] However, in actual working conditions, only the surface of the rotating ring that comes into contact with the sand flow will wear out. Replacing the entire rotating ring wastes resources and increases maintenance costs. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a highly reliable submersible pump with a sand-resistant double-end face and two-component sealing structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The high-reliability submersible pump features a sand-resistant double-end face two-component sealing structure, including a pump shaft and a rotating ring. The rotating ring is sleeved on the pump shaft and has a detachable contact surface. An outer ring is movably mounted on the rotating ring. Multiple clips are fixedly mounted on the side of the outer ring facing the contact surface. Each clip on the contact surface has a corresponding clip cavity, and multiple elastic airbags are provided on the outer ring.

[0008] Furthermore, in a preferred configuration, a threaded ring is fixedly provided on the side of the contact surface facing the moving ring, and a threaded groove is provided on the moving ring to fit the threaded ring.

[0009] Furthermore, a preferred structure is that when the threaded ring is fully engaged in the threaded groove, the retaining element and the retaining cavity are adapted and aligned.

[0010] In addition, a preferred structure is that the outer ring has an outer ring groove on its outer side, the outer ring is adapted to move on the outer ring groove, and multiple anti-detachment components are provided on the outer ring groove.

[0011] Furthermore, in a preferred configuration, the moving ring has multiple recesses, and all of these recesses are connected to the outer ring groove.

[0012] Furthermore, in a preferred configuration, each of the recesses is equipped with an outwardly extending elastic airbag, and the other end of each elastic airbag is connected to an outer ring.

[0013] The beneficial effects of this utility model are as follows: by setting the outer ring and the contact surface as a modular structure, when the contact surface is severely worn due to sand flow, the user only needs to replace the contact surface, without having to replace the entire rotating ring, thereby reducing the maintenance cost of the rotating ring. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the high-reliability submersible pump sand-resistant double-end-face two-component sealing structure proposed in this utility model.

[0015] Figure 2 for Figure 1 A schematic diagram of the pump shaft after it has been concealed.

[0016] Figure 3 for Figure 2 A schematic diagram of the exploded structure;

[0017] Figure 4 This is a schematic diagram of the contact surface of the sand-resistant double-end-face two-component sealing structure for a high-reliability submersible pump proposed in this utility model.

[0018] Figure 5 for Figure 2 A schematic diagram of the structure after the contact surfaces are hidden;

[0019] Figure 6 for Figure 5 A schematic diagram of the explosion structure.

[0020] In the diagram: 1 pump shaft, 2 moving ring, 21 threaded groove, 22 concave cavity, 221 elastic air bladder, 23 outer ring groove, 3 contact surface, 31 threaded ring, 32 retaining cavity, 4 outer ring, 41 retaining piece. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-6 The high-reliability submersible pump features a sand-resistant, double-end-face, two-component sealing structure, including a pump shaft 1 and a rotating ring 2. The rotating ring 2 is sleeved on the pump shaft 1 and has a detachable contact surface 3. An outer ring 4 is movably mounted on the rotating ring 2. Multiple locking pieces 41 are fixedly mounted on the side of the outer ring 4 facing the contact surface 3. Corresponding locking cavities 32 are provided on the contact surface 3 for each locking piece 41. Multiple elastic airbags 221 are also provided on the outer ring 4.

[0023] A threaded ring 31 is fixedly disposed on the side of the contact surface 3 facing the moving ring 2, and a threaded groove 21 is adapted to fit the threaded ring 31 on the moving ring 2. Through the adaptation between the threaded ring 31 and the threaded groove 21, the contact surface 3 can be securely installed on the moving ring 2.

[0024] When the threaded ring 31 is fully engaged in the threaded groove 21, the retaining member 41 and the retaining cavity 32 are fitted and aligned. The engagement between the retaining member 41 and the retaining cavity 32 can fix the contact surface 3, preventing it from rotating during the rotation of the pump shaft 1, thereby improving the installation stability of the contact surface 3.

[0025] The moving ring 2 has an outer ring groove 23 on its outer side, and the outer ring 4 is adapted to move on the outer ring groove 23. The outer ring groove 23 is provided with multiple anti-detachment components. The anti-detachment components can prevent the outer ring 4 from falling off the outer ring groove 23 during movement.

[0026] The moving ring 2 has multiple recesses 22, all of which are connected to the outer ring groove 23. An elastic airbag 221 is installed outwardly within each recess 22, and the other end of each airbag 221 is connected to the outer ring 4. The elastic airbags 221 push the outer ring 4 outward, allowing the locking member 41 to be stably locked within the locking cavity 32. It is worth noting that the specific structure and operation of the elastic airbag 221 are existing technologies and will not be described in detail here.

[0027] In this embodiment, the rotating ring 2 is mounted on the pump shaft 1 and rotates synchronously with the pump shaft 1. A stationary ring is also provided on the submersible pump. Through the adaptive arrangement between the rotating ring 2 and the stationary ring, a seal can be achieved between the two components at both ends of the submersible pump. It is worth noting that the specific working methods and connection structures of the pump shaft 1, rotating ring 2, and stationary ring are all existing technologies and are not related to the technical problem of reducing the maintenance cost of the rotating ring 2 that needs to be solved in this technical solution; therefore, they will not be elaborated upon further.

[0028] Furthermore, by adopting a modular design between the rotating ring 2 and the contact surface 3, when the contact surface 3 of the rotating ring 2 shows wear during long-term use, the user only needs to disassemble and replace the contact surface 3 on the rotating ring 2. This eliminates the need to replace the entire rotating ring 2, reducing the maintenance cost of the rotating ring 2.

[0029] Furthermore, when the user needs to install the contact surface 3 on the moving ring 2, simply press the outer ring 4 towards the elastic airbag 221. At this time, the outer ring 4 is fully inserted into the outer ring cavity 23, and the elastic airbag 221 is compressed into the concave cavity 22.

[0030] The user then simply rotates the threaded ring 31 on the contact surface 3 into the threaded groove 21 to install the contact surface 3. At this point, the retaining cavities 32 on the contact surface 3 are all aligned and fitted with the retaining pieces 41 on the outer ring 4. Finally, the user simply releases the outer ring 4, which automatically moves outward and resets due to the elastic force of the elastic airbag 221, thereby automatically engaging the retaining piece 41 into the retaining cavity 32. This engagement between the retaining piece 41 and the retaining cavity 32 prevents the contact surface 3 from loosening during pump shaft 1 rotation, thus improving the installation stability of the contact surface 3.

[0031] Furthermore, when the user needs to disassemble and replace the worn contact surface 3, simply press the outer ring 4 against the elastic airbag 221 again, so that the outer ring 4 is fully inserted into the outer ring cavity 23, and compress the elastic airbag 221 into the recess 22. At this time, the retaining piece 41 on the outer ring 4 is no longer locked to the retaining cavity 32, and the user can directly rotate the contact surface 3 out of the threaded groove 21 through the threaded ring 31, thereby achieving the disassembly of the contact surface 3.

[0032] In this embodiment, by setting the outer ring 2 and the contact surface 3 as a modular structure, when the contact surface 3 is severely worn due to sand flow, the user only needs to replace the contact surface 3, without having to replace the entire moving ring 2, thereby reducing the maintenance cost of the moving ring 2.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-reliability submersible pump with a sand-resistant double-end face two-component sealing structure, comprising a pump shaft (1) and a rotating ring (2), characterized in that, The moving ring (2) is sleeved on the pump shaft (1), and a detachable contact surface (3) is installed on the moving ring (2), and an outer ring (4) is movably provided on the moving ring (2); Multiple clips (41) are fixedly provided on the outer ring (4) facing the contact surface (3), and each clip (41) on the contact surface (3) is adapted to have a clip cavity (32), and multiple elastic airbags (221) are provided on the outer ring (4).

2. The high-reliability submersible pump sand-resistant double-end-face two-component sealing structure according to claim 1, characterized in that, A threaded ring (31) is fixedly provided on the side of the contact surface (3) facing the moving ring (2), and a threaded groove (21) is adapted to be opened on the moving ring (2) corresponding to the threaded ring (31).

3. The high-reliability submersible pump sand-resistant double-end face two-component sealing structure according to claim 2, characterized in that, When the threaded ring (31) is fully engaged in the threaded groove (21), the clamp (41) and the clamping cavity (32) are adapted and aligned.

4. The high-reliability submersible pump sand-resistant double-end-face two-component sealing structure according to claim 1, characterized in that, The outer ring (2) has an outer ring groove (23) on its outer side. The outer ring (4) is adapted to move on the outer ring groove (23), and multiple anti-dropping parts are provided on the outer ring groove (23).

5. The high-reliability submersible pump sand-resistant double-end-face two-component sealing structure according to claim 4, characterized in that, The moving ring (2) has multiple recesses (22), and all recesses (22) are connected to the outer ring groove (23).

6. The high-reliability submersible pump sand-resistant double-end face two-component sealing structure according to claim 5, characterized in that, Each cavity (22) is equipped with an elastic airbag (221) that extends outward, and the other end of each elastic airbag (221) is connected to the outer ring (4).

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