Sealing structure, end suction pump and axially split pump

Abstract

The utility model relates to the technical field of sealing, in particular to a sealing structure, an end suction pump and an axially split pump. The sealing structure comprises a fixing block, a through hole is formed in the fixing block, a rotating part is embedded into the through hole, and a containing groove and a mounting groove are formed in the inner circumferential face of the through hole and used for filling of a sealing material and mounting of a mechanical seal respectively. In addition, an oil seal ring, an oil seal groove, a rotating sleeve and a sealing ring are further arranged, and the sealing performance is further enhanced. The fixing block is composed of a base and an embedded block, and a containing groove is defined by the embedded groove and the embedded block. According to the sealing structure, the sealing effect is effectively improved, the service life of equipment is prolonged, and the leakage risk is reduced.

Description

Technical Field

[0001] This application relates to the field of sealing technology, and in particular to a sealing structure and an end-suction pump and a split-case pump. Background Technology

[0002] Sealing structures are widely used in various mechanical equipment, especially in equipment involving the transmission of liquids or gases, such as pumps and valves. These devices typically operate in high-pressure, high-temperature, or corrosive environments, thus requiring extremely high sealing performance. A well-designed seal not only improves system reliability and reduces the risk of leakage, but also extends equipment lifespan and reduces maintenance costs, resulting in significant economic benefits and technological advancements.

[0003] Currently, common sealing methods in the machinery industry include mechanical seals, packing seals, and oil seals. Mechanical seals achieve sealing through tight contact between the rotating and stationary rings, suitable for high-pressure and high-speed applications. Packing seals use flexible packing to fill gaps and prevent media leakage, commonly found in low-speed and low-pressure environments. Oil seals use rubber seal rings that fit tightly against the rotating parts of the shaft to prevent lubricating oil leakage, suitable for high-speed applications. In addition, there are composite seals, which combine several of the above sealing methods to meet specific operating conditions.

[0004] However, existing sealing structures have certain limitations, primarily in that a single sealing method cannot adapt to varying working conditions. Changing the sealing method is particularly complex and inconvenient for different applications, leading to inconvenient maintenance. For example, in some cases, it is necessary to replace the mechanical seal with a packing seal, but due to unreasonable structural design, this conversion becomes extremely difficult. This not only increases maintenance difficulty but may also lead to additional damage from frequent disassembly and reassembly, thus affecting the overall stability and safety of the equipment. Utility Model Content

[0005] To facilitate the selection of sealing methods in different application scenarios, this application provides a sealing structure and an end-suction pump and a split-case pump.

[0006] In a first aspect, this application provides a sealing structure, which adopts the following technical solution:

[0007] A sealing structure includes a fixing block.

[0008] The fixing block has a through hole for inserting a rotating component.

[0009] The inner circumferential surface of the through hole is provided with a receiving groove for filling with sealant.

[0010] An installation groove is provided on the inner circumferential surface of one end of the through hole, and the installation groove is used for mechanical seal installation.

[0011] By adopting the above technical solutions, appropriate sealing materials and whether or not to install mechanical seals can be selected based on the application scenario.

[0012] Preferably, when a mechanical seal is installed at the mounting groove, the sealing material includes lubricating grease.

[0013] By adopting the above technical solution, lubricating grease is used to provide lubrication for the mechanical seal (between the dynamic and static rings), thereby improving the wear resistance of the mechanical seal.

[0014] Preferably, it also includes an oil seal ring.

[0015] An oil seal groove is provided on the inner circumferential surface of the through hole, and the oil seal groove is located on the side of the receiving groove opposite to the mounting groove.

[0016] The oil seal ring is used to be embedded in the oil seal groove, and the oil seal ring is used to form a seal between the fixed block and the rotating part.

[0017] By adopting the above technical solution, the position design of the oil seal groove ensures that the oil seal ring can effectively block external impurities from entering the through hole, while preventing leakage of internal sealing material, thereby improving the reliability and service life of the entire sealing structure.

[0018] Preferably, the oil seal groove extends through the fixing block in a direction away from the receiving groove.

[0019] By adopting the above technical solution, the oil seal ring can be installed and replaced more easily, improving maintenance convenience.

[0020] Preferably, it also includes a rotating sleeve.

[0021] The rotating sleeve is rotatably inserted into the through hole, and the rotating sleeve is used for inserting the rotating component.

[0022] The sealant includes sealing fillers.

[0023] By adopting the above technical solution, the rotating sleeve design makes the relative movement between the rotating component and the fixed block smoother, reducing wear and extending service life. Simultaneously, the application of sealing packing achieves a seal, preventing leakage.

[0024] Preferably, it also includes a sealing ring.

[0025] The sealing ring is used to form a seal between the rotating sleeve and the rotating parts.

[0026] By adopting the above technical solution, the sealing ring is used to seal between the rotating sleeve and the rotating parts, effectively preventing leakage of the internal medium and ensuring stable sealing performance.

[0027] Preferably, a sealing groove is provided on the inner circumferential surface of the rotating sleeve.

[0028] The sealing ring is used to be embedded in the sealing groove.

[0029] By adopting the above technical solution, a sealing groove is provided on the inner circumferential surface of the rotating sleeve, so that the sealing ring can be firmly embedded therein, thereby ensuring a reliable seal between the rotating sleeve and the rotating part.

[0030] Preferably, the fixing block includes a base and an insert.

[0031] The base is provided with a groove.

[0032] The insert is embedded in the groove, and the surface of the insert and the groove wall together form the receiving groove.

[0033] By adopting the above technical solution, the structure of the fixing block becomes more flexible and modular. Specifically, the combination design of the base and the insert not only facilitates manufacturing and assembly but also allows for quick replacement or adjustment of the insert in different application scenarios, thereby adapting to different sealing requirements. Furthermore, this design helps improve the overall stability and reliability of the sealing structure, reducing the risk of the entire seal failing due to damage to a single component.

[0034] Secondly, this application provides an end-suction pump, which adopts the following technical solution:

[0035] An end-suction pump includes the aforementioned sealing structure.

[0036] By adopting the above technical solution, the end-suction pump has the following effects:

[0037] 1. The sealing structure effectively prevents media leakage, improving the safety and reliability of equipment operation;

[0038] 2. By setting the receiving groove and installation groove in the through hole, sealant can be filled and mechanical seal can be installed respectively, ensuring a multi-layer sealing effect between the rotating part and the fixed block;

[0039] 3. When using lubricating grease as a sealing material, it can not only enhance the sealing performance, but also improve the wear resistance of the mechanical seal and extend its service life;

[0040] 4. The addition of an oil seal ring and its corresponding oil seal groove further improves the reliability and stability of the seal;

[0041] 5. The design of the oil seal groove penetrating the fixing block facilitates installation and maintenance while ensuring good sealing performance;

[0042] 6. The combined use of the rotating sleeve and the sealing ring makes the seal between the rotating part and the fixed block tighter, especially under high pressure or high speed conditions;

[0043] 7. A sealing groove is provided on the inner circumferential surface of the rotating sleeve to better embed the sealing ring and enhance the sealing effect;

[0044] 8. The fixing block consists of a base and an insert, which not only facilitates assembly but also allows for flexible adjustment of the sealing method under different working conditions.

[0045] Thirdly, this application provides a split-case pump, which adopts the following technical solution:

[0046] A split-case pump includes the aforementioned sealing structure.

[0047] By adopting the above technical solution, the split-case pump has the following effects:

[0048] 1. By setting through holes, receiving grooves and mounting grooves on the fixing block, stable embedding of rotating parts and effective installation of sealing material and mechanical seal can be achieved, thereby improving sealing performance and extending service life;

[0049] 2. When a mechanical seal is installed at the mounting groove, using lubricating grease as the sealing material further enhances the sealing and lubrication properties and reduces wear;

[0050] 3. Adding an oil seal ring and its corresponding oil seal groove makes the seal between the fixed block and the rotating parts more reliable and prevents leakage;

[0051] 4. The design of the oil seal groove extending through the fixing block away from the receiving groove facilitates the installation and maintenance of the oil seal ring;

[0052] 5. The introduction of the rotating sleeve and its internal sealing packing not only adds another layer of sealing protection, but also improves the stability of the rotating parts;

[0053] 6. A sealing ring is added between the rotating sleeve and the rotating part to further enhance the sealing effect and ensure no leakage;

[0054] 7. The sealing ring is embedded in the sealing groove, ensuring that the sealing ring is in a stable position and preventing displacement due to vibration or impact;

[0055] 8. The fixing block consists of a base and an insert. The receiving groove formed by the two is convenient for manufacturing and assembly, which improves production efficiency.

[0056] In summary, this application includes at least one of the following beneficial technical effects:

[0057] 1. By setting through holes, receiving grooves and mounting grooves on the fixing block, different sealing methods (such as mechanical seals or packing seals) can be flexibly selected, which improves the applicability and flexibility of the sealing structure;

[0058] 2. When installing the mechanical seal in the mounting groove, lubricating grease is used to effectively reduce the friction between the rotating parts and the stationary block, extend the service life of the sealing device, and reduce the maintenance frequency;

[0059] 3. The design of the oil seal ring enables the sealing structure to maintain excellent sealing performance under high-speed conditions, while simplifying the operation process of changing different sealing methods and improving the overall reliability and safety of the equipment. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of the sealing structure.

[0061] Figure 2 This is a schematic diagram of the sealing structure when a mechanical seal is selected.

[0062] Figure 3 This is a schematic diagram of the sealing structure when packing seal is selected.

[0063] Explanation of reference numerals in the attached drawings: 1. Fixing block; 11. Through hole; 12. Receiving groove; 13. Mounting groove; 14. Base; 141. Embedded groove; 15. Embedded block; 16. Oil seal groove; 2. Oil seal ring; 3. Rotating sleeve; 31. Sealing groove; 0. Rotating component. Detailed Implementation

[0064] The present application will be further described in detail below with reference to the accompanying drawings.

[0065] Reference Figure 1 This application discloses a sealing structure, including a fixing block 1.

[0066] The fixing block 1 has a through hole 11 for inserting the rotating part 0. The inner circumferential surface of the through hole 11 has a receiving groove 12 for filling with sealant.

[0067] A mounting groove 13 is provided on the inner circumferential surface of one end of the through hole 11. The mounting groove 13 is used for mechanical seal installation.

[0068] More specifically, the fixing block 1 includes a base 14 and an insert 15. A through hole 11 passes through the base 14 and the insert 15.

[0069] The mounting groove 13 is located at the base 14, and the mounting groove 13 passes through one end of the base 14 axially along the through hole 11.

[0070] The base 14 is provided with a groove 141, which is coaxial with the through hole 11. Along the axial direction of the through hole 11, the groove 141 extends through the other end of the base 14 in a direction away from the mounting groove 13.

[0071] The insert 15 is embedded in the groove 141. The surface of the insert 15 and the groove wall of the groove 141 together form the aforementioned receiving groove 12.

[0072] Reference Figure 1 and Figure 2 In one embodiment, when a mechanical seal is selected: the mechanical seal is installed within the mounting groove 13. The sealing material includes lubricating grease. The lubricating grease within the receiving groove 12 can penetrate the gap between the inner circumferential surface of the through hole 11 and the outer circumferential surface of the rotating component 0, thereby improving the wear resistance of the mechanical seal.

[0073] Meanwhile, an oil seal groove 16 is provided on the inner circumferential surface of the through hole 11. The oil seal groove 16 is located on the side of the receiving groove 12 away from the mounting groove 13; the oil seal groove 16 penetrates the fixing block 1 in a direction away from the receiving groove 12. That is, the oil seal groove 16 is located at the insert 15, and the oil seal groove 16 penetrates the insert 15 in a direction away from the receiving groove 12.

[0074] The sealing structure also includes an oil seal ring 2. The oil seal ring 2 is used to fit into the oil seal groove 16 and forms a seal between the insert 15 and the rotating part 0 to prevent lubricating grease from seeping out. The oil seal ring 2 can be a skeleton oil seal.

[0075] Reference Figure 1 and Figure 3 In another embodiment, where a packing seal is selected: the seal includes sealing packing. Sealing packing, also known as packing, is typically made of a flexible, woven material, usually in the form of square, rectangular, or circular strips that fill the sealing cavity.

[0076] The sealing structure also includes a rotating sleeve 3 and a sealing ring.

[0077] The rotating sleeve 3 is rotatably inserted into the through hole 11, and the rotating sleeve 3 is used for the insertion of the rotating part 0. A sealing groove 31 is provided on the inner circumferential surface of the rotating sleeve 3, and a sealing ring is used to be inserted into the sealing groove 31. The sealing ring is used to form a seal between the rotating sleeve 3 and the rotating part 0. The sealing ring can be an O-ring, and it allows the rotating sleeve 3 to rotate with the rotating part 0.

[0078] The principle of the sealing structure in this embodiment is as follows: by designing a universal fixing block 1, multiple sealing methods are integrated, enabling the same equipment to achieve the best sealing effect under different working conditions. Whether it is a mechanical seal or a packing seal, quick switching can be achieved on the same fixing block 1, greatly simplifying the maintenance process, reducing equipment downtime, and improving overall work efficiency.

[0079] This application also discloses an end-suction pump, including the sealing structure described above. The mounting groove 13 is oriented toward the pump chamber.

[0080] This application also discloses a split-case pump, including the sealing structure described above. The mounting groove 13 is oriented toward the pump chamber.

[0081] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealing structure, characterized in that, Includes fixed block (1), The fixing block (1) is provided with a through hole (11), which is used for the insertion of the rotating part (0). The inner circumferential surface of the through hole (11) is provided with a receiving groove (12), which is used for filling with sealant. An installation groove (13) is provided on the inner circumferential surface of one end of the through hole (11), and the installation groove (13) is used for mechanical seal installation.

2. The sealing structure according to claim 1, characterized in that, When a mechanical seal is installed at the mounting groove (13): the sealing material includes lubricating grease.

3. The sealing structure according to claim 2, characterized in that, It also includes oil seal rings (2). An oil seal groove (16) is provided on the inner circumferential surface of the through hole (11). The oil seal groove (16) is located on the side of the receiving groove (12) away from the mounting groove (13). The oil seal ring (2) is used to be embedded in the oil seal groove (16) and the oil seal ring (2) is used to form a seal between the fixed block (1) and the rotating part (0).

4. The sealing structure according to claim 3, characterized in that, The oil seal groove (16) penetrates the fixing block (1) in a direction away from the receiving groove (12).

5. The sealing structure according to claim 1, characterized in that, It also includes a rotating sleeve (3). The rotating sleeve (3) is rotatably embedded in the through hole (11), and the rotating sleeve (3) is used for the insertion of the rotating part (0). The sealant includes sealing fillers.

6. The sealing structure according to claim 5, characterized in that, It also includes sealing rings, The sealing ring is used to form a seal between the rotating sleeve (3) and the rotating part (0).

7. The sealing structure according to claim 6, characterized in that, The rotating sleeve (3) has a sealing groove (31) on its inner circumferential surface. The sealing ring is used to be embedded in the sealing groove (31).

8. The sealing structure according to claim 1, characterized in that, The fixing block (1) includes a base (14) and an insert (15). The base (14) is provided with a groove (141). The insert (15) is embedded in the groove (141), and the surface of the insert (15) and the groove wall of the groove (141) together form the receiving groove (12).

9. An end-suction pump, characterized in that, Includes the sealing structure described in any one of claims 1-8.

10. A split-case pump, characterized in that, Includes the sealing structure described in any one of claims 1-8.

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