Shaft seal mounting structure for leaching agitation system
The split-type protective sealing installation structure solves the problem of slurry or slurry foam intruding into the agitator shaft bearing, thus achieving stable operation of the agitator shaft and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN SONGXIAN JINNIU CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-24
AI Technical Summary
When existing agitator shafts are used in harsh environments, slurry or slurry foam can easily seep in from the top and bottom of the bearing, causing bearing damage and failure, affecting the normal operation of the agitator shaft and increasing maintenance costs.
The system adopts a split-type protective sealing installation structure, including a bearing housing assembly, a lower sealing assembly, and an upper sealing assembly. The trapezoidal elastic sealing ring is designed to cooperate with the annular groove to achieve upper and lower sealing of the agitator shaft installation area, preventing slurry or slurry foam from entering the bearing.
This effectively prevents slurry or slurry foam from entering the agitator shaft bearing, ensuring the working stability of the agitator shaft and reducing maintenance costs.
Smart Images
Figure CN224541589U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stirring shaft installation and sealing technology, and in particular to a shaft seal installation structure for an leaching stirring system. Background Technology
[0002] The stirring shaft is used to agitate the flotation slurry by driving the impeller. As the impeller rotates, the slurry in the tank is drawn from the sides through the bottom of the tank and into the space between the impeller blades. After the slurry and air are fully mixed between the blades, it is pushed obliquely upward from the upper part of the impeller. After being stabilized and oriented by the stator, it enters the entire tank. After enrichment, the foam overflows from the overflow weir. In existing installations, the upper part of the stirring shaft is directly mounted to the upper frame of the equipment via bearings (such as utility model patents with patent numbers CN202411379927.0 and CN202320561109.7). Due to the harsh working environment, slurry or slurry foam can easily invade the bearings on which the stirring shaft is installed from the top and bottom, causing damage and failure of the stirring shaft bearings, affecting the normal operation of the stirring shaft, and increasing the maintenance cost of the stirring shaft. This does not meet the specific production needs. Utility Model Content
[0003] The purpose of this utility model is to provide a shaft seal installation structure for a leaching mixing system. It adopts a split-type protective seal installation structure design, which can seal the upper and lower parts of the mixing shaft installation area, preventing slurry or slurry foam from entering the mixing shaft bearing and ensuring the working stability of the mixing shaft.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A shaft seal mounting structure for an leaching stirring system includes a frame, a bearing housing assembly, a lower seal assembly, an upper seal assembly, a stirring shaft, and a connecting shaft sleeve. The bearing housing assembly is mounted on the frame and connected to the frame by mounting bolts; a bearing mounting cavity is provided inside the bearing housing assembly, and two sets of support bearings are installed in the bearing mounting cavity; the upper part of the stirring shaft is assembled on the inner ring of the support bearing. A lower sealing assembly is provided at the lower part of the bearing housing assembly to seal the lower part of the supporting bearing, and the lower sealing assembly is installed and connected to the bearing housing assembly by bolts; an upper sealing assembly is provided at the upper part of the bearing housing assembly to seal the upper part of the supporting bearing, and the upper sealing assembly is installed and connected to the bearing housing assembly by bolts.
[0005] The bearing housing assembly includes a bearing housing body, an outer frame, and a first bolt; the bearing mounting cavity is formed on the bearing housing body, and the bearing mounting cavity is a circular cavity structure with openings at both ends. The outer frame is fixedly connected to both sides of the outer side of the bearing housing body, and the outer frame is connected to the frame by the first bolt.
[0006] The lower sealing assembly includes a lower sealing cover, an elastic sealing ring, and a second bolt. The lower sealing cover has a through hole adapted to accommodate the stirring shaft, and an annular groove is machined in the through hole. The elastic sealing ring is installed in the annular groove to seal the lower part of the support bearing, and the elastic sealing ring is in smooth contact with the outer circle of the stirring shaft. An upper boss is provided on the lower sealing cover to support the support bearing.
[0007] Furthermore, the annular groove and the elastic sealing ring are both trapezoidal in shape, and the elastic sealing ring is assembled inside the annular groove and protrudes from the annular groove.
[0008] The upper sealing assembly includes an upper sealing body and a third bolt; the lower part of the upper sealing body is connected to the bearing housing body by the third bolt; a motor is provided on the upper part of the upper sealing body, and the upper sealing body is connected to the motor by bolts; a sealing space is provided in the upper sealing body, and a lower boss for pressing and positioning the support bearing is provided on the lower part of the upper sealing body.
[0009] Furthermore, a motor shaft is installed on the motor, the motor shaft is placed in a sealed space, and the motor shaft is connected to the stirring shaft through a connecting bushing.
[0010] Furthermore, an external thread is machined on the upper outer circle of the stirring shaft, and a clamping nut is screwed on the external thread. An annular platform is set on the stirring shaft below the clamping nut, and a sealing ring is set on the annular platform. The clamping nut presses the sealing ring on the annular platform, and the sealing ring is in smooth contact with the inner wall of the sealing space in the upper sealing body.
[0011] The beneficial effects of this utility model are as follows: The shaft seal installation structure of the leaching stirring system of this utility model, through the innovative structural design of the stirring shaft body and the synergistic effect of the bearing seat assembly, lower sealing assembly, and upper sealing assembly, effectively seals the upper and lower parts of the stirring shaft installation area, preventing the stirring shaft support bearing from being eroded by external slurry or foam, and ensuring the operational stability of the stirring shaft. Specifically, an annular groove is machined at the through hole position in the lower sealing cover body, and an elastic sealing ring is installed in the annular groove to seal the lower part of the support bearing. At the same time, the annular groove and the elastic sealing ring are designed as trapezoidal structures, which can ensure the fit between the elastic sealing ring and the annular groove. In addition, the elastic sealing ring protrudes from the annular groove to ensure fit during the rotation of the stirring shaft. The upper sealing body and the sealing ring work together to form a double-seal form at the upper part of the support bearing, which can effectively prevent intrusion at the upper part of the support bearing and achieve upper sealing of the support bearing. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of the shaft seal installation structure of this utility model; Figure 2 This is a structural schematic diagram of the bearing housing assembly in this utility model; Figure 3 This is a schematic diagram of the lower sealing assembly in this utility model; Figure 4 This is a schematic diagram of the upper sealing assembly in this utility model; Figure 5 This is a partially enlarged schematic diagram of this utility model; The numbers in the diagram are as follows: 1-Frame, 2-Bearing housing assembly, 3-Lower sealing assembly, 4-Upper sealing assembly, 5-Agitator shaft, 6-Connecting bushing, 7-Pressure nut, 8-Sealing ring, 9-Annular platform, 10-Support bearing; 21-Bearing housing body, 22-Outer frame, 23-First bolt; 31-Lower sealing cover, 32-Elastic sealing ring, 33-Second bolt, 34-Annular groove, 35-Through hole, 36-Upper boss; 41-Upper sealing body, 42-Sealing space, 43-Lower boss. Detailed Implementation
[0013] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly or indirectly connected to the other element. When an element is referred to as "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in this application to indicate orientation are based on the specific structure shown in the accompanying drawings and do not constitute a limitation on the structure.
[0014] Specific Embodiment 1: As shown in the appendix to the specification of this utility model. Figure 1 As shown, in order to solve the problem that slurry or slurry foam can easily invade the support bearing 10 of the stirring shaft 5 from the top and bottom of the bearing, thereby causing damage and failure of the stirring shaft 5 bearing and affecting the normal operation of the stirring shaft 5, this utility model provides a shaft seal installation structure for an leaching stirring system, which mainly includes a frame 1, a bearing seat assembly 2, a lower sealing assembly 3, an upper sealing assembly 4, a stirring shaft 5, and a connecting shaft sleeve 6. The bearing housing assembly 2 is mounted on the frame 1 for mounting the support bearing 10. The bearing housing assembly 2 is externally connected to the frame 1 by mounting bolts. The bearing housing assembly 2 has a bearing mounting cavity adapted to the bearing mounting. Two sets of support bearings 10 supporting the upper part of the stirring shaft 5 are installed in the bearing mounting cavity. The upper part of the stirring shaft 5 used for performing stirring operations is assembled on the inner ring of the support bearing 10. A lower sealing assembly 3 is provided at the lower part of the bearing housing assembly 2 to seal the lower part of the supporting bearing 10. The lower sealing assembly 3 is installed and connected to the bearing housing assembly 2 by bolts. An upper sealing assembly 4 is provided at the upper part of the bearing housing assembly 2 to seal the upper part of the supporting bearing 10. The upper sealing assembly 4 is installed and connected to the bearing housing assembly 2 by bolts.
[0015] As per the specification attached to this utility model Figure 2 As shown, the bearing housing assembly 2 for mounting and supporting the support bearing 10 includes a bearing housing body 21, an outer frame 22, and a first bolt 23; wherein, the bearing mounting cavity for adapting to the installation of the support bearing 10 is formed on the bearing housing body 21, and the bearing mounting cavity is a circular cavity structure with open ends. The support bearing 10 is assembled in the circular cavity structure. The outer frame 22 is fixedly connected to the outer sides of the bearing housing body 21, and the outer frame 22 is connected to the frame 1 by the first bolt 23.
[0016] As per the specification attached to this utility model Figure 3As shown, the lower sealing assembly 3 for sealing the lower side of the support bearing 10 includes a lower sealing cover 31, an elastic sealing ring 328, and a second bolt 33. The lower sealing cover 31 and the elastic sealing ring 328 are the main lower sealing elements. A circular through hole 35 adapted to the passage of the stirring shaft 5 is machined in the lower sealing cover 31. An annular groove 34 adapted to the installation of the elastic sealing ring 328 is machined in the through hole 35. The elastic sealing ring 328, which performs contact sealing, is installed in the annular groove 34 to seal the lower part of the support bearing 10. The elastic sealing ring 328 makes smooth sealing contact with the outer circle of the stirring shaft 5. An upper boss 36 is provided on the lower sealing cover 31 to support the lower part of the support bearing 10.
[0017] Furthermore, in order to ensure stable contact between the elastic sealing ring 328 and the annular groove 34, both the annular groove 34 and the elastic sealing ring 328 are designed as trapezoidal structures. The elastic sealing ring 328 is assembled inside the annular groove 34 and protrudes from the annular groove 34. In use, the outer side of the elastic sealing ring 328 can fit tightly with the annular groove 34, and the inner circle of the elastic sealing ring 328 can slide and seal with the stirring shaft 5.
[0018] As per the specification attached to this utility model Figure 4 As shown, the upper sealing assembly 4 for sealing the upper part of the support bearing 10 includes an upper sealing body 41 and a third bolt. The upper sealing body 41 is a cylindrical structure with two functions: first, to seal the upper part of the bearing to prevent ink from entering from the upper (part) side of the bearing; and second, to support the drive motor. During installation, the lower part of the upper sealing body 41 is connected to the bearing housing body 21 by the third bolt. A motor is installed on the upper part of the upper sealing body 41, and the upper sealing body 41 is connected to the motor by bolts. At the same time, a sealing space 42 for sealing the upper part of the bearing is provided inside the upper sealing body 41, and a lower boss 43 for pressing and positioning the support bearing 10 is provided on the lower part of the upper sealing body 41.
[0019] Furthermore, a motor shaft is installed on the motor, and the motor shaft is placed in the sealing space 42 within the upper sealing body 41. The motor shaft is connected to the stirring shaft 5 via the connecting bushing 6.
[0020] To further enhance the sealing of the bearing, an external thread is machined on the upper outer circumference of the stirring shaft 5, and a clamping nut 7 is screwed onto the external thread. An annular platform 9 is machined on the stirring shaft 5 below the clamping nut 7, and a sealing ring 8 is provided on the annular platform 9. During installation, the clamping nut 7 can press the sealing ring 8 onto the annular platform 9. The sealing ring 8 makes smooth contact with the inner wall of the sealing space 42 in the upper sealing body 41, so as to achieve secondary sealing of the upper part of the support bearing 10 in the sealing space 42.
[0021] The installation and use process is as follows: First, the installer can install the bearing housing assembly 2 on the frame 1. Specifically, the support bearing 10 can be assembled into the circular cavity structure inside the bearing housing body 21. Outer brackets 22 are fixedly connected to the outer sides of the bearing housing body 21. The outer brackets 22 are connected to the frame 1 by the first bolt 23. Then, the upper part of the stirring shaft 5 can be assembled into the inner ring of the support bearing 10. The lower sealing assembly 3 is assembled into the lower part of the bearing housing body 21. Specifically, the lower sealing cover 31 can be connected to the bearing housing body 21 by the second bolt 33. The lower part of the upper sealing body 21 is connected to the bearing housing body 21. An elastic sealing ring 328 is installed in the annular groove 34 to seal the lower part of the support bearing 10. The elastic sealing ring 328 makes smooth sealing contact with the outer circle of the stirring shaft 5. The upper boss 36 on the lower sealing cover 31 supports the lower part of the support bearing 10. After installation, the nut 7 is tightened at the upper outer circle of the stirring shaft 5. Tightening the nut 7 can press the sealing ring 8 onto the annular platform 9. The sealing ring 8 makes smooth contact with the inner wall of the sealing space 42 in the upper sealing body 41 to achieve secondary sealing of the upper part of the support bearing 10 in the sealing space 42. Finally, the lower part of the upper sealing body 41 is connected to the bearing housing body 21 by a third bolt. The motor is installed on the upper part of the upper sealing body 41. The motor shaft is connected to the upper part of the stirring shaft 5 by a connecting bushing 6. Then, the upper sealing body 41 and the motor are installed together by bolts. Thus, the installation process of this utility model is completed. Through the synergistic action of components such as the bearing housing assembly 2, the lower sealing assembly 3, and the upper sealing assembly 4, this utility model effectively seals the upper and lower parts of the installation area of the stirring shaft 5, preventing the supporting bearing 10 of the stirring shaft 5 from being corroded by external slurry or foam, and ensuring the operational stability of the stirring shaft 5. Simultaneously, the trapezoidal design of the annular groove 34 and the elastic sealing ring 328 ensures a good fit between the elastic sealing ring 328 and the annular groove 34. The elastic sealing ring 328 protruding from the annular groove 34 ensures rotational fit with the stirring shaft 5, achieving a seal at the lower part of the bearing. At the upper part of the supporting bearing 10, the upper sealing body 41 works in conjunction with the sealing ring 8 to form a double-seal system, effectively preventing intrusion at the upper part of the supporting bearing 10 and achieving a seal at the upper part of the supporting bearing 10.
[0022] 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 illustrative of the principles of this 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.
Claims
1. A shaft seal mounting structure for an leaching stirring system, characterized in that, It includes a frame (1), a bearing housing assembly (2), a lower sealing assembly (3), an upper sealing assembly (4), a stirring shaft (5), and a connecting bushing (6); The bearing housing assembly (2) is mounted on the frame (1) and connected to the frame (1) by mounting bolts; a bearing mounting cavity is provided in the bearing housing assembly (2), and two sets of support bearings (10) are installed in the bearing mounting cavity; the upper part of the stirring shaft (5) is assembled on the inner ring of the support bearing (10). A lower sealing assembly (3) is provided at the lower part of the bearing housing assembly (2) to seal the lower part of the supporting bearing (10), and the lower sealing assembly (3) is installed and connected to the bearing housing assembly (2) by bolts; an upper sealing assembly (4) is provided at the upper part of the bearing housing assembly (2) to seal the upper part of the supporting bearing (10), and the upper sealing assembly (4) is installed and connected to the bearing housing assembly (2) by bolts.
2. The shaft seal mounting structure for an leaching stirring system according to claim 1, characterized in that, The bearing housing assembly (2) includes a bearing housing body (21), an outer frame (22), and a first bolt (23). The bearing mounting cavity is opened on the bearing housing body (21). The bearing mounting cavity is a circular cavity structure with openings at both ends. The outer frame (22) is fixedly connected to the outer sides of the bearing housing body (21). The outer frame (22) is connected to the frame (1) by the first bolt (23).
3. The shaft seal mounting structure for an leaching stirring system according to claim 1, characterized in that, The lower sealing assembly (3) includes a lower sealing cover (31), an elastic sealing ring (32), and a second bolt (33); the lower sealing cover (31) has a through hole (35) adapted to the through of the stirring shaft (5), and an annular groove (34) is machined in the through hole (35). The elastic sealing ring (32) is installed in the annular groove (34) to seal the lower part of the support bearing (10). The elastic sealing ring (32) is in smooth contact with the outer circle of the stirring shaft (5); an upper boss (36) is provided on the lower sealing cover (31) to support the support bearing (10).
4. The shaft seal mounting structure for an leaching stirring system according to claim 3, characterized in that, The annular groove (34) and the elastic sealing ring (32) are both trapezoidal in shape, and the elastic sealing ring (32) is assembled in the annular groove (34) and protrudes out of the annular groove (34).
5. The shaft seal mounting structure for a leaching stirring system according to claim 2, characterized in that, The upper sealing assembly (4) includes an upper sealing body (41) and a third bolt; the lower part of the upper sealing body (41) is connected to the bearing housing body (21) by the third bolt; a motor is provided on the upper part of the upper sealing body (41), and the upper sealing body (41) is connected to the motor by bolts; a sealing space (42) is provided inside the upper sealing body (41), and a lower boss (43) is provided on the lower part of the upper sealing body (41) for pressing and positioning the support bearing (10).
6. The shaft seal mounting structure for an leaching stirring system according to claim 5, characterized in that, A motor shaft is installed on the motor, the motor shaft is placed in a sealed space (42), and the motor shaft is connected to the stirring shaft (5) through a connecting bushing (6).
7. The shaft seal mounting structure for an leaching stirring system according to claim 5, characterized in that, An external thread is machined on the upper outer circle of the stirring shaft (5), and a clamping nut (7) is screwed on the external thread. An annular platform (9) is set on the lower part of the stirring shaft (5) of the clamping nut (7), and a sealing ring (8) is set on the annular platform (9). The clamping nut (7) presses the sealing ring (8) on the annular platform (9), and the sealing ring (8) is in smooth contact with the inner wall of the sealing space (42) in the upper sealing body (41).