Silt pump bearing chamber leak-proof structure

Abstract

The utility model relates to bearing seal technical field, and disclose a kind of silt pump bearing chamber anti-leakage structure, including bearing chamber ontology and main shaft, the sealing section of bearing chamber ontology is sequentially arranged from outside to inside by external labyrinth seal assembly, intermediate pressure balance cavity, double mechanical seal group and pressure relief component, the labyrinth seal assembly includes detachable copper labyrinth ring and polyurethane sand scraping ring.The silt pump bearing chamber anti-leakage structure, by the cooperation setting of bearing chamber ontology, main shaft, external labyrinth seal assembly, detachable copper labyrinth ring, polyurethane sand scraping ring, double mechanical seal group, tungsten carbide moving ring and siliconized graphite static ring, has carried out multistage sealing anti-leakage treatment for the silt pump bearing chamber anti-leakage structure, enhanced its anti-leakage effect, by the cooperation setting of intermediate pressure balance cavity, pressure relief hole, pressure relief groove and pressure relief valve stem, has carried out pressure relief while sealing anti-leakage for silt pump bearing chamber.

Description

Technical Field

[0001] This utility model relates to the field of bearing sealing technology, specifically to a leak-proof structure for the bearing chamber of a mud pump. Background Technology

[0002] The bearing housing of a sludge pump is one of the core components of the pump. Its main functions are to support the pump shaft, ensure bearing lubrication, and prevent external sludge and sewage from entering the bearing.

[0003] The existing anti-leakage structure for the bearing chamber of a slurry pump is not convenient for multi-stage sealing and leak prevention, has poor leak prevention effect, and is not convenient for depressurizing the bearing chamber of the slurry pump while sealing and preventing leaks. Therefore, this utility model provides an anti-leakage structure for the bearing chamber of a slurry pump. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a leak-proof structure for the bearing chamber of a sludge pump, thus solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a leakage prevention structure for a mud pump bearing chamber, comprising a bearing chamber body and a main shaft, wherein the sealing section of the bearing chamber body is provided with an external labyrinth seal assembly, an intermediate pressure balance chamber, a double mechanical seal assembly and a pressure relief assembly in sequence from the outside to the inside.

[0008] Preferably, the labyrinth sealing assembly includes a removable copper labyrinth ring and a polyurethane scraping ring.

[0009] Preferably, the pressure balancing chamber is provided with a pressure relief hole, a pressure relief groove, and a pressure relief valve stem.

[0010] Preferably, the dual mechanical seal assembly comprises a tungsten carbide moving ring and a siliconized graphite stationary ring mounted back-to-back.

[0011] Preferably, the inner edge of the scraping ring is provided with a V-shaped lip.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a leakage-proof structure for the bearing chamber of a sludge pump, which has the following beneficial effects:

[0014] This anti-leakage structure for the bearing chamber of a sludge pump utilizes a multi-stage sealing system. This system, through the coordinated arrangement of the bearing chamber body, main shaft, external labyrinth seal assembly, detachable copper labyrinth ring, polyurethane scraper ring, double mechanical seal assembly, tungsten carbide moving ring, and siliconized graphite stationary ring, enhances the anti-leakage effect. Furthermore, the coordinated arrangement of the intermediate pressure balance chamber, pressure relief hole, pressure relief groove, and pressure relief valve stem allows for pressure relief while simultaneously sealing and preventing leakage in the bearing chamber. This enhances practicality, extends the service life of the sludge pump bearing, reduces internal pressure, and lowers maintenance costs for the bearing chamber. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] In the figure: bearing housing body 1, main shaft 2, external labyrinth seal assembly 3, detachable copper labyrinth ring 31, polyurethane scraper ring 32, intermediate pressure balance chamber 4, pressure relief hole 41, pressure relief groove 42, pressure relief valve stem 43, double mechanical seal assembly 5, tungsten carbide moving ring 51, siliconized graphite stationary ring 52. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1This utility model provides a technical solution: a leakage-proof structure for a sludge pump bearing chamber, comprising a bearing chamber body 1 and a main shaft 2. Through the coordinated arrangement of the bearing chamber body 1, main shaft 2, external labyrinth seal assembly 3, detachable copper labyrinth ring 31, polyurethane scraping ring 32, double mechanical seal assembly 5, tungsten carbide moving ring 51, and siliconized graphite stationary ring 52, a multi-stage sealing and leakage-proof treatment is achieved for the sludge pump bearing chamber, enhancing its leakage-proof effect. The sealing section of the bearing chamber body 1, from the outside to the inside, is sequentially arranged with the external labyrinth seal assembly 3, the intermediate pressure balance chamber 4, the double mechanical seal assembly 5, and the pressure relief assembly 6. The coordinated arrangement of the intermediate pressure balancing chamber 4, pressure relief hole 41, pressure relief groove 42, and pressure relief valve stem 43 serves to relieve pressure in the mud pump bearing chamber while simultaneously sealing and preventing leakage. This enhances practicality, extends the service life of the mud pump bearing, reduces its internal pressure, and lowers the maintenance cost of the mud pump bearing chamber. The labyrinth seal assembly 3 includes a detachable copper labyrinth ring 31 and a polyurethane scraper ring 32. The pressure balancing chamber 4 is equipped with a pressure relief hole 41, a pressure relief groove 42, and a pressure relief valve stem 43. The double mechanical seal assembly 5 includes a tungsten carbide moving ring 51 and a siliconized graphite stationary ring 52 mounted back-to-back. The inner edge of the scraper ring 32 is provided with a V-shaped lip.

[0019] In summary, the anti-leakage structure of the sludge pump bearing chamber, through the coordinated arrangement of the bearing chamber body 1, main shaft 2, external labyrinth seal assembly 3, detachable copper labyrinth ring 31, polyurethane scraping ring 32, double mechanical seal assembly 5, tungsten carbide moving ring 51, and siliconized graphite stationary ring 52, provides multi-stage sealing and anti-leakage treatment for the sludge pump bearing chamber, enhancing its anti-leakage effect. Furthermore, through the coordinated arrangement of the intermediate pressure balance chamber 4, pressure relief hole 41, pressure relief groove 42, and pressure relief valve stem 43, it simultaneously provides pressure relief for the sludge pump bearing chamber while ensuring sealing and preventing leakage. This enhances practicality, extends the service life of the sludge pump bearing, reduces its internal pressure, and lowers the maintenance costs of the sludge pump bearing chamber.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In the description of this utility model, it should also be noted that the device structure and drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0022] In the description of this utility model, it should also be noted that all standard parts used can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0023] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand pump bearing chamber leak-proof structure, comprising a bearing chamber body (1) and a main shaft (2), characterized in that: The sealing section of the bearing housing body (1) is provided with an external labyrinth seal assembly (3), an intermediate pressure balance chamber (4), a double mechanical seal assembly (5), and a pressure relief assembly (6) from the outside to the inside.

2. The anti-leak structure of the bearing chamber of the slurry pump according to claim 1, characterized in that: The labyrinth sealing assembly (3) includes a removable copper labyrinth ring (31) and a polyurethane scraping ring (32).

3. The anti-leak structure of the bearing chamber of the slurry pump according to claim 1, characterized in that: The pressure balance chamber (4) is provided with a pressure relief hole (41), a pressure relief groove (42), and a pressure relief valve stem (43).

4. The anti-leak structure of the bearing chamber of the slurry pump according to claim 1, characterized in that: The dual mechanical seal assembly (5) comprises a tungsten carbide moving ring (51) and a siliconized graphite stationary ring (52) mounted back to back.

5. The anti-leak structure for the bearing chamber of a slurry pump according to claim 2, characterized in that: The inner edge of the scraping ring (32) is provided with a V-shaped lip.

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