Protective device capable of preventing leakage of mechanical seal from polluting environment

Abstract

The utility model discloses a mechanical seal leakage pollution-free environment protection device, and relates to the field of mechanical seal protection devices, the mechanical seal leakage pollution-free environment protection device comprises an end cover, a static ring is fixedly connected in the end cover in a sealing mode, the static ring is tightly attached to a moving ring assembly, the static ring and the moving ring assembly are sleeved on a pump shaft, the static ring is rotatably connected with the pump shaft, and the moving ring assembly is connected with the end cover in a sealing mode. The movable ring assembly is fixedly connected with the pump shaft, a detachable protective cover is arranged on the outer side of the end cover, an external pipe connector is arranged at the lower end of the protective cover, the protective cover is arranged on the outer side of the movable ring assembly in a covering mode, and the protective cover is rotationally connected with the pump shaft in a sealed mode. The protective cover can collect leaked substances, when the leakage amount is slightly large, the protective cover can be connected into an external collector through the external pipe connector, the leaked substances are treated in a unified mode, and pollution to the environment is avoided.

Description

Technical Field

[0001] The utility model relates to the field of mechanical seal protection devices, in particular to a protection device for mechanical seal leakage without polluting the environment. Background Art

[0002] In the use of mechanical seals, leakage is inevitable. Especially when the sealing medium of the mechanical seal leaks externally, it will cause more or less pollution to the external environment when it enters the external environment. Taking the mechanical seal of WB2 type as an example, this kind of mechanical seal is an externally mounted and external type, and the rotating dynamic ring assembly is completely exposed outside. When this kind of mechanical seal is in use, if leakage occurs, the sealing medium will directly leak into the external environment. Most of the sealing media of this kind of mechanical seal are toxic and harmful substances such as strong acids and strong alkalis, which cause serious pollution to the environment. Therefore, it is necessary to design a mechanical seal protection device to prevent the sealing medium of the mechanical seal from leaking into the external environment. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a protection device for mechanical seal leakage without polluting the environment, and solve the problem that the toxic and harmful substances of the mechanical seal leak into the external environment and cause pollution mentioned in the background art.

[0004] The utility model adopts the following technical scheme:

[0005] A protection device for mechanical seal leakage without polluting the environment of the utility model includes an end cover. A static ring is fixedly connected in the end cover in a sealed manner. The static ring is closely attached to the dynamic ring assembly. The static ring and the dynamic ring assembly are sleeved on the pump shaft. The static ring is rotatably connected to the pump shaft. The dynamic ring assembly is fixedly connected to the pump shaft. A detachable protective cover is arranged on the outer side of the end cover. An external pipe joint is arranged at the lower end of the protective cover. The protective cover covers the outer side of the dynamic ring assembly. The protective cover is rotatably connected to the pump shaft in a sealed manner.

[0006] Further, the end cover is provided with an installation groove, and the installation groove is closely sleeved on the static ring.

[0007] Further, the protective cover is detachably connected to the end cover through a connecting screw.

[0008] Further, the side wall of the protective cover is provided with an outer edge bottom, and a first threaded hole is arranged on the outer edge bottom. A corresponding second threaded hole is arranged on the end cover. The first threaded hole, the second threaded hole and the connecting screw are in threaded connection and cooperation.

[0009] Further, the protective cover is provided with an installation hole, and the installation hole is rotatably connected to the pump shaft in a sealed manner.

[0010] Furthermore, a plurality of annular grooves are provided in the mounting holes.

[0011] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0012] The protective cover of the present utility model can collect the leaked substances. When the leakage amount is slightly large, it can be connected to an external collector through an external pipe joint to uniformly process the leaked substances, avoiding environmental pollution. At the same time, the annular grooves in the mounting holes can also play a role in temporarily storing the leaked substances and preventing them from leaking out, avoiding the direct leakage of the leaked substances from between the protective cover and the pump shaft. Description of the Drawings

[0013] The present utility model will be further described below with reference to the drawings.

[0014] Figure 1 It is a schematic structural diagram of the protective device for pollution-free environment leakage of the mechanical seal of the present utility model;

[0015] Figure 2 It is a schematic structural diagram of the end cover in the protective device for pollution-free environment leakage of the mechanical seal of the present utility model;

[0016] Figure 3 It is a schematic structural diagram of the protective cover in the protective device for pollution-free environment leakage of the mechanical seal of the present utility model;

[0017] Figure 4 It is a schematic structural diagram of the external pipe joint in the protective device for pollution-free environment leakage of the mechanical seal of the present utility model.

[0018] Description of the reference numerals: 1, end cover; 1-1, mounting groove; 1-2, second threaded hole; 2, protective cover; 2-1, outer edge bottom; 2-2, first threaded hole; 2-3, mounting hole; 2-4, annular groove; 3, static ring; 4, dynamic ring assembly; 5, pump shaft; 6, external pipe joint; 7, connecting screw. Detailed Description of the Preferred Embodiments

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments.

[0020] As Figure 1As shown in the figure, in this embodiment, a protective device for preventing mechanical seal leakage from polluting the environment is disclosed, which includes an end cover 1. A static ring 3 is fixedly connected in the end cover 1 in a sealed manner. The static ring 3 is in close contact with a dynamic ring assembly 4. The static ring 3 and the dynamic ring assembly 4 are sleeved on a pump shaft 5. The static ring 3 is rotatably connected to the pump shaft 5, and the dynamic ring assembly 4 is fixedly connected to the pump shaft 5. A protective cover 2 is detachably connected to the outside of the end cover 1 through connecting screws 7. The protective cover 2 covers the outside of the dynamic ring assembly 4, and the protective cover 2 is rotatably connected to the pump shaft 5 in a sealed manner. An external pipe joint 6 is provided at the lower end of the protective cover 2. The protective cover 2 functions to collect leakage substances. When the leakage amount is slightly larger, it can be connected to an external collector through the external pipe joint 6 to collect and process the externally leaked substances uniformly, without polluting the environment.

[0021] As Figure 2 and Figure 3 shown in the figure, the end cover 1 is provided with a mounting groove 1-1. The mounting groove 1-1 is tightly sleeved on the static ring 3 through an O-ring seal. The end cover 1 is also provided with a second threaded hole 1-2. The side wall of the protective cover 2 is provided with an outer edge bottom 2-1, and a first threaded hole 2-2 is provided on the outer edge bottom 2-1. The first threaded hole 2-2, the second threaded hole 1-2 and the connecting screw 7 are in threaded connection and cooperation.

[0022] In this embodiment, the protective cover 2 is made of polytetrafluoroethylene. The protective cover 2 is provided with a mounting hole 2-3, and the mounting hole 2-3 is rotatably connected to the pump shaft 5 in a sealed manner. A plurality of annular grooves 2-4 are provided in the mounting hole 2-3. Since the gap formed between the inner wall of the mounting hole 2-3 of the protective cover 2 and the pump shaft 5 is very small, and the internal space of the protective cover 2 is relatively large, when a small amount of leakage substances flow to the gap, a certain pressure difference will be formed between the inside and outside of the protective cover 2 to prevent the leakage substances from flowing out continuously. At the same time, a small amount of leakage substances will also be stored in the annular grooves 2-4. Therefore, to a certain extent, the annular grooves 2-4 play a role in temporarily storing the leakage substances and preventing the substances from leaking out.

[0023] The using process of the present utility model is as follows:

[0024] First, the installation groove 1-1 of the end cover 1 is tightly sleeved on the stationary ring 3 through an O-ring seal. The outer edge bottom 2-1 of the protective cover 2 faces the side of the end cover 1, and at the same time, the external pipe joint 6 faces downward. The pump shaft 5 is passed through the installation hole 2-3 and aligned with the first threaded hole 2-2 and the second threaded hole 1-2, and then threadedly connected with the connecting screw 7, and the assembly is completed. If there is a leakage of the sealing medium between the stationary ring 3 and the end cover 1, between the stationary ring 3 and the end face of the dynamic ring assembly 2, and between the dynamic ring assembly 2 and the pump shaft 5, the leaked substance will be collected in the protective cover 2. If the leakage amount is slightly larger, it can be connected to an external collector through the external pipe joint 6 to uniformly process the externally leaked substance, avoiding environmental pollution. At the same time, the annular groove 2-4 in the installation hole 2-3 can also play a role in temporarily storing the leaked substance and preventing the substance from leaking externally, avoiding the direct leakage of the leaked substance between the protective cover 2 and the pump shaft 5.

[0025] In addition, the present utility model is applicable to protective devices in externally mounted mechanical seals such as WB2.

[0026] The embodiments described above are only descriptions of the preferred modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A protective device for preventing pollution of the environment caused by leakage of a mechanical seal, comprising an end cover (1), wherein a stationary ring (3) is fixedly connected in the end cover (1) in a sealed manner, the stationary ring (3) is in close contact with a rotating ring assembly (4), the stationary ring (3) and the rotating ring assembly (4) are sleeved on a pump shaft (5), the stationary ring (3) is rotatably connected to the pump shaft (5), and the rotating ring assembly (4) is fixedly connected to the pump shaft (5), characterized in that: A detachable protective cover (2) is provided on the outer side of the end cover (1). An external pipe joint (6) is provided at the lower end of the protective cover (2). The protective cover (2) covers the outer side of the dynamic ring assembly (4), and the protective cover (2) is in sealed rotational connection with the pump shaft (5).

2. The protective device for preventing pollution of the environment by leakage of the mechanical seal according to claim 1, characterized in that: The end cover (1) is provided with a mounting groove (1-1), and the mounting groove (1-1) is tightly sleeved on the static ring (3).

3. The protective device for preventing pollution of the environment by leakage of the mechanical seal according to claim 1, characterized in that: The protective cover (2) is detachably connected to the end cover (1) by connecting screws (7).

4. The protection device for preventing mechanical seal leakage from polluting the environment according to claim 3, characterized in that: The side wall of the protective cover (2) is provided with an outer edge bottom (2-1), and a first threaded hole (2-2) is provided on the outer edge bottom (2-1). A corresponding second threaded hole (1-2) is provided on the end cover (1). The first threaded hole (2-2), the second threaded hole (1-2) and the connecting screw (7) are in threaded connection and cooperation.

5. The protective device for preventing mechanical seal leakage from polluting the environment according to claim 1, characterized in that: The protective cover (2) is provided with a mounting hole (2-3), and the mounting hole (2-3) is in sealed rotational connection with the pump shaft (5).

6. The protection device for pollution-free environment of mechanical seal leakage according to claim 5, characterized in that: A plurality of annular grooves (2-4) are provided in the mounting hole (2-3).

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