Conductive slurry delivery pump wear-resistant sealing bush structure

Abstract

The utility model relates to the technical field of delivery pump accessories, concretely relates to conductive slurry delivery pump wear -resisting sealing shaft sleeve structure, including the shaft body, the outside of shaft body is equipped with the shaft sleeve body, and the shaft sleeve body is composed of the base layer of setting in the outer layer, the wear -resisting layer of setting on the inner surface of base layer and the anticorrosive layer of setting on the wear -resisting layer surface, the both ends of shaft sleeve body are fixedly installed with the sealing seat, and the inner annular side surface of sealing seat is inlaid with two mutually symmetrical polyurethane sealing rings of inside and outside, and the metal framework oil seal is still equipped with on sealing seat, and the annular side surface of shaft sleeve body is fixedly installed with a plurality of radiating fins, the utility model discloses can promote the wear -resisting and corrosion -resistant performance of whole, is favorable for prolonging the service life.

Description

Technical Field

[0001] This utility model relates to the technical field of pump accessories, specifically to a wear-resistant sealing bushing structure for a conductive slurry pump. Background Technology

[0002] Conductive slurry is a key material in fields such as electronics and information technology and new energy. Its transportation process places extremely high demands on the sealing and wear resistance of the equipment. The conductive slurry delivery pump is the core equipment for achieving efficient transmission of conductive slurry, and the sealing bushing, as an important component of the delivery pump, plays a crucial role in preventing slurry leakage and reducing shaft wear.

[0003] In practical applications, conductive slurries often contain a large number of hard particles and are corrosive, making the sealing bushings highly susceptible to wear and corrosion during long-term use. Existing sealing bushings are mostly made of single metal materials or ordinary ceramic materials, whose wear resistance and corrosion resistance are insufficient to meet the conveying requirements of conductive slurries. On the one hand, frequent wear leads to increased sealing gaps, causing slurry leakage, wasting raw materials and polluting the working environment. On the other hand, premature bushing failure increases equipment maintenance frequency and replacement costs, affecting production efficiency. Furthermore, some sealing bushings have unreasonable sealing structure designs, resulting in unstable sealing performance under high-pressure conveying conditions, further exacerbating leakage problems.

[0004] To address these issues, the industry has attempted to improve the materials and structure of the sealing bushing. For example, using cemented carbide to enhance wear resistance is an option, but cemented carbide is expensive and difficult to process. Alternatively, increasing the number of sealing lips can improve sealing, but excessive sealing lips increase frictional resistance, leading to severe overheating of the bushing and affecting its service life. Therefore, we propose a wear-resistant sealing bushing structure for conductive slurry pumps. Utility Model Content

[0005] The purpose of this invention is to provide a wear-resistant sealing bushing structure for a conductive slurry delivery pump, so as to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wear-resistant sealing bushing structure for a conductive slurry conveying pump includes a shaft body, on the outside of which a bushing body is fitted. The bushing body consists of a base layer on the outer layer, a wear-resistant layer on the inner surface of the base layer, and an anti-corrosion layer on the surface of the wear-resistant layer. Sealing seats are fixedly installed at both ends of the bushing body. Two symmetrical polyurethane sealing rings are embedded in the inner annular side of the sealing seat. A metal skeleton oil seal is also fitted on the sealing seat.

[0008] Preferably, the base layer, the wear-resistant layer, and the anti-corrosion layer are integrally formed, and a smooth surface layer is provided on the inner surface of the anti-corrosion layer;

[0009] This design ensures a robust overall structure, while the smooth, clean surface helps reduce friction.

[0010] Preferably, a plurality of heat dissipation fins are fixedly installed on the annular side of the bushing body, and the heat dissipation fins are evenly distributed along the axial direction of the bushing body.

[0011] This feature allows the heat dissipation fins to quickly dissipate the heat generated by the bushing body during operation, preventing the seals from aging due to excessive temperature.

[0012] Preferably, the bushing body and the sealing seat are integrally formed, and the inner annular side of the sealing seat is provided with two annular grooves, one inner and one outer, and the polyurethane sealing ring is located in the annular groove and is engaged with the annular groove.

[0013] This setting allows the polyurethane sealing ring to be assembled properly.

[0014] Preferably, the size of the metal skeleton oil seal is adapted to the size of the sealing seat, and the lip of the metal skeleton oil seal is in contact with the surface of the shaft.

[0015] Preferably, the size of the polyurethane sealing ring is adapted to the size of the annular groove, and the polyurethane sealing ring is attached to the surface of the shaft.

[0016] Preferably, the thickness of the base layer is between 3 and 8 mm, the thickness of the wear-resistant layer is between 1 and 3 mm, and the thickness of the anti-corrosion layer is between 0.1 and 0.5 mm.

[0017] This setting ensures the thickness is appropriate, preventing the size from being too large or too small and affecting assembly.

[0018] Preferably, the wear-resistant layer is also mixed in the anti-corrosion layer, and the distance between two adjacent heat dissipation fins is between 3mm and 6mm.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model sets the bushing body as a composite structure consisting of a base layer, a wear-resistant layer and an anti-corrosion layer, with the wear-resistant layer mixed in the anti-corrosion layer. This achieves resistance to the erosion of hard particles in the conductive slurry and protection against chemical corrosion, thereby improving the overall wear resistance and corrosion resistance of the bushing and extending its service life.

[0021] 2. This utility model forms a multi-seal structure by setting two polyurethane sealing rings inside the sealing seats at both ends of the bushing body, and cooperating with the sleeved metal skeleton oil seal, thereby achieving stable sealing under high pressure conveying conditions and effectively preventing slurry leakage, reducing raw material waste and environmental pollution.

[0022] 3. This utility model achieves rapid heat dissipation during shaft sleeve operation by setting multiple heat dissipation fins evenly distributed along the axial direction on the annular side of the shaft sleeve body, with the spacing between adjacent heat dissipation fins being 3mm~6mm. This avoids aging of the seal due to high temperature. At the same time, the appropriate thickness of the base layer, wear-resistant layer and anti-corrosion layer ensures structural stability, thereby reducing maintenance frequency and cost and improving equipment operation stability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a partial structural schematic diagram of the present invention;

[0025] Figure 3 This is a cross-sectional view of the bushing body of this utility model;

[0026] Figure 4 This is a partial structural schematic diagram of the bushing body of this utility model;

[0027] The meanings of the labels in the diagram are as follows:

[0028] 1. Shaft body;

[0029] 2. Bushing body; 20. Base layer; 21. Wear-resistant layer; 22. Anti-corrosion layer; 221. Smooth surface layer; 23. Heat dissipation fins;

[0030] 3. Sealing seat; 30. Annular groove; 31. Polyurethane sealing ring; 32. Metal skeleton oil seal. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0032] Please see Figures 1-4This utility model provides a technical solution: a wear-resistant sealing bushing structure for a conductive slurry conveying pump, including a shaft body 1, a bushing body 2 sleeved on the outside of the shaft body 1, the bushing body 2 consisting of a base layer 20 on the outer layer, a wear-resistant layer 21 on the inner surface of the base layer 20, and an anti-corrosion layer 22 on the surface of the wear-resistant layer 21; sealing seats 3 are fixedly installed at both ends of the bushing body 2, and two symmetrical polyurethane sealing rings 31 are embedded in the inner annular side of the sealing seat 3, and a metal skeleton oil seal 32 is also sleeved on the sealing seat 3. By sleeved on the outside of the shaft body 1 with the bushing body 2 consisting of the base layer 20, the wear-resistant layer 21 and the anti-corrosion layer 22, the polyurethane sealing rings 31 in the sealing seat 3 cooperate with the metal skeleton oil seal 32, so that the bushing can effectively resist slurry wear and corrosion, and at the same time achieve reliable sealing to prevent leakage.

[0033] In this embodiment, the base layer 20, the wear-resistant layer 21 and the anti-corrosion layer 22 are integrally formed structures. A smooth surface layer 221 is provided on the inner surface of the anti-corrosion layer 22, which makes the overall structure of the bushing firm, reduces friction with the shaft 1, and reduces operating losses.

[0034] like Figure 1 As shown, multiple heat dissipation fins 23 are fixedly installed on the annular side of the bushing body 2. The heat dissipation fins 23 are evenly distributed along the axial direction of the bushing body 2, so that the heat generated during the operation of the bushing can be dissipated quickly, avoiding the aging of the seal due to high temperature and extending the service life of the seal.

[0035] Specifically, the bushing body 2 and the sealing seat 3 are integrally formed structures. The inner annular side of the sealing seat 3 is provided with two annular grooves 30, one inside and one outside. The polyurethane sealing ring 31 is located in the annular groove 30 and is engaged with the annular groove 30, so that the polyurethane sealing ring 31 is installed firmly and the sealing effect is stable.

[0036] Furthermore, the dimensions of the metal skeleton oil seal 32 are adapted to the dimensions of the sealing seat 3, and the lip of the metal skeleton oil seal 32 fits against the surface of the shaft 1, thereby further enhancing the sealing performance and adapting to high-pressure transmission conditions.

[0037] In addition, the size of the polyurethane sealing ring 31 is adapted to the size of the annular groove 30, and the polyurethane sealing ring 31 fits against the surface of the shaft 1, making the seal tighter and effectively preventing slurry penetration.

[0038] It is worth noting that the thickness of the base layer 20 is between 3 and 8 mm, the thickness of the wear-resistant layer 21 is between 1 and 3 mm, and the thickness of the anti-corrosion layer 22 is between 0.1 and 0.5 mm, so that the bushing size is appropriate, which ensures performance without affecting assembly.

[0039] It is worth noting that the wear-resistant layer 21 is also mixed in with the anti-corrosion layer 22, and the distance between two adjacent heat dissipation fins 23 is between 3mm and 6mm, which improves the wear resistance and anti-corrosion performance in a synergistic way, optimizes the heat dissipation efficiency, and ensures the long-term stable operation of the bushing.

[0040] In this embodiment, the base layer 20 can be made of high-strength alloy steel to provide good structural strength for the bushing; the wear-resistant layer 21 can be made of silicon carbide ceramic material, which has extremely high hardness and wear resistance and can effectively resist the erosion of hard particles in the conductive slurry; the anti-corrosion layer 22 can be made of polytetrafluoroethylene material to prevent the slurry from corroding the bushing.

[0041] When using the wear-resistant sealing bushing structure of the conductive slurry conveying pump of this utility model, the bushing body 2 is sleeved on the outside of the shaft body 1 to ensure that the composite structure composed of the base layer 20, wear-resistant layer 21 and anti-corrosion layer 22 of the bushing body 2 fits the shaft body 1. The smooth clean surface layer 221 on the inner surface of the anti-corrosion layer 22 reduces friction.

[0042] A polyurethane sealing ring 31 is inserted into the annular groove 30 of the sealing seat 3 to fit the surface of the shaft body 1. Then, the metal skeleton oil seal 32 is put on the sealing seat 3, with its lip fitting the shaft body 1 to form a multiple seal. The metal skeleton oil seal 32 and the shaft sleeve body 2 are correctly installed in the appropriate position of the housing of the conductive slurry conveying pump. During the operation of the shaft sleeve, the heat dissipation fins 23 dissipate heat quickly.

[0043] When maintenance is required, remove the metal skeleton oil seal 32 and replace the polyurethane sealing ring 31 in the annular groove 30.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant sealing bushing structure for a conductive slurry conveying pump, comprising a shaft body (1), characterized in that: The shaft body (1) is fitted with a bushing body (2), which consists of a base layer (20) on the outer layer, a wear-resistant layer (21) on the inner surface of the base layer (20), and an anti-corrosion layer (22) on the surface of the wear-resistant layer (21). Both ends of the bushing body (2) are fixedly installed with sealing seats (3). The inner annular side of the sealing seat (3) is inlaid with two symmetrical polyurethane sealing rings (31). The sealing seat (3) is also fitted with a metal skeleton oil seal (32).

2. The wear-resistant sealing bushing structure of the conductive slurry conveying pump according to claim 1, characterized in that: The base layer (20), the wear-resistant layer (21) and the anti-corrosion layer (22) are integrally formed structures, and a smooth surface layer (221) is provided on the inner surface of the anti-corrosion layer (22).

3. The wear-resistant sealing bushing structure of the conductive slurry conveying pump according to claim 1, characterized in that: Multiple heat dissipation fins (23) are fixedly installed on the annular side of the bushing body (2), and the heat dissipation fins (23) are evenly distributed along the axial direction of the bushing body (2).

4. The wear-resistant sealing bushing structure of the conductive slurry conveying pump according to claim 1, characterized in that: The bushing body (2) and the sealing seat (3) are integrally formed. The inner annular side of the sealing seat (3) is provided with two annular grooves (30), and the polyurethane sealing ring (31) is located in the annular groove (30) and is engaged with the annular groove (30).

5. The wear-resistant sealing bushing structure of the conductive slurry conveying pump according to claim 1, characterized in that: The size of the metal skeleton oil seal (32) is adapted to the size of the sealing seat (3), and the lip of the metal skeleton oil seal (32) is in contact with the surface of the shaft (1).

6. The wear-resistant sealing bushing structure of the conductive slurry conveying pump according to claim 4, characterized in that: The size of the polyurethane sealing ring (31) is adapted to the size of the annular groove (30), and the polyurethane sealing ring (31) is attached to the surface of the shaft (1).

7. The wear-resistant sealing bushing structure of the conductive slurry conveying pump according to claim 1, characterized in that: The thickness of the base layer (20) is between 3 and 8 mm, the thickness of the wear-resistant layer (21) is between 1 and 3 mm, and the thickness of the anti-corrosion layer (22) is between 0.1 and 0.5 mm.

8. The wear-resistant sealing bushing structure of the conductive slurry conveying pump according to claim 3, characterized in that: The wear-resistant layer (21) is also mixed in the anti-corrosion layer (22), and the distance between two adjacent heat dissipation fins (23) is between 3mm and 6mm.

Images