Bearing supporting and sealing structure
By designing the bearing seal support structure, the stable positioning and sealing of the rotating shaft is achieved by using cylindrical step holes and sealing rings, the problems of unstable bearing connections and poor sealing performance in the prior art are solved, and the stability and sealing effect of the stirring device are improved.
Patent Information
- Application Number
- CN202421282630.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, the bearing connection method of the agitator device is unstable, loose, and poor sealing performance, which cannot meet the working scenarios where the sealing requirements are high.
A bearing seal support structure is designed, including a mounting seat and bearing seat, which can achieve stable positioning and sealing of the shaft through cylindrical step holes and sealing rings. The rotating shaft is fixed with a circular nut and a stop washer to prevent the fastener from contacting the material silo directly. , use elastic retaining ring to limit the upper bearing to form an integrated base.
It improves the stability and sealing effect of the bearing, reduces assembly difficulty, avoids loose fasteners and wear of the seal ring, and extends the service life of the seal ring.
Smart Images
Figure CN222254757U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fixing devices, in particular to a bearing sealing support structure. Background Art
[0002] In actual production, the output end of the motor is usually connected to the shaft, and the shaft is inserted into the container to stir the material in the container. The general installation method is to connect the motor through the bearing at the opening of the container and fix it with fasteners. This connection method is not stable enough. After working for a period of time, the fasteners will become loose, causing the rotation center of the shaft to deviate and produce lateral displacement. In addition, this installation method has poor sealing performance, and the sealing effect during the rotation of the shaft is not ideal. It cannot effectively guarantee the performance of bearings and seals, and cannot meet the requirements in working scenarios with high sealing requirements. Therefore, a more stable bearing support structure is needed to make the stirring device more stable and firm, and to meet working scenarios with high sealing requirements. Utility Model Content
[0003] The problem to be solved by the utility model is to provide a structure of supporting bearings, so that the stirring device is more stable and firm, the movement of the rotating shaft is more stable, and a better sealing effect is achieved.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bearing sealing support structure, which is used to be connected to the opening of the material bin and sleeved on the outside of the rotating shaft, including a mounting seat and a bearing seat, the mounting seat is connected to the outside of the material bin wall, the center opening of the mounting seat is the same as the material bin opening, the bottom end of the bearing seat is sleeved through the center opening of the mounting seat and the material bin opening in sequence, and a cylindrical step hole 1 and a cylindrical step hole 2 are provided at the bottom of the bearing seat, the inner diameter of the cylindrical step hole 1 is smaller than the inner diameter of the cylindrical step hole 2, the cylindrical step hole is sleeved on the outside of the rotating shaft, a sealing ring is provided in the cavity between the cylindrical step hole 2 and the rotating shaft, a bearing is provided above the cylindrical step hole 2, and the rotating shaft can be sleeved in the bearing.
[0005] Preferably, the bearing seat is provided with an extension portion at one end outside the material bin wall, an upper convex portion is provided above the extension portion, and a lower convex portion is provided below the extension portion.
[0006] Preferably, the bearing comprises a lower bearing and an upper bearing, and the lower bearing and the upper bearing are connected via a bearing retaining ring.
[0007] Preferably, the top end of the bearing fixes the rotating shaft to the bearing seat through a round nut stop washer and a round nut.
[0008] Preferably, a base is provided between the second cylindrical step hole and the upper bearing. The base is an integrally formed structure, and the base includes a transverse surface, an upper boss and a lower boss. The upper boss extends toward the upper end of the rotating shaft, and the lower boss extends toward the lower end of the rotating shaft. The upper boss and the lower boss are located at relative positions on both sides of the transverse surface. The lower boss is located directly above the sealing ring and abuts against the sealing ring, and the upper boss abuts against the bottom end of the upper bearing.
[0009] Preferably, a groove is provided on the inner side of the upper portion of the bearing seat, and an elastic retaining ring is used for the mounting hole in the groove to limit the outer edge of the upper bearing.
[0010] Preferably, the bearing seat is connected to the motor via a transition mounting seat.
[0011] Compared with the prior art, the utility model provides a bearing seal support structure, which has the following beneficial effects:
[0012] 1. The cylindrical step hole positioning reduces the assembly difficulty and improves the assembly efficiency;
[0013] 2. There is no fastener connection at the bottom of the structure that contacts the inside of the material bin, eliminating the risk of fasteners loosening and falling. The top of the structure is installed with round nuts and locking washers, so that the shaft and the inner ring of the bearing are installed tightly without the risk of loosening and falling off. The outer ring of the upper bearing is fixed with a hole elastic retaining ring, which is easy to install.
[0014] 3. The base isolates the bearing and the sealing ring so that the two do not contact each other, preventing the sealing ring from being accelerated by the rotation of the bearing and extending the service life of the sealing ring.
[0015] 4. The outer frame of the bearing seat is integrally formed, with a simple and compact structure and easy operation; BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:
[0017] Figure 1 It is a schematic diagram of the utility model.
[0018] Figure 2 It is a cross-sectional view of the utility model.
[0019] Figure 3 This is a cross-sectional view of the bearing seat involved in the utility model.
[0020] Figure 4 This is a schematic diagram of the base involved in the utility model.
[0021] Explanation of the reference numerals in the accompanying drawings: 1. Motor; 2. Rotating shaft; 21. Upper end of rotating shaft; 22. Lower end of rotating shaft; 3. Round nut; 4. Stop washer; 5. Bearing; 51. Lower bearing; 52. Upper bearing; 53. Bearing retaining ring; 6. Material bin wall; 7. Sealing ring; 8. Bearing seat; 81. Cylindrical step hole one; 82. Cylindrical step hole two; 83. Groove; 84. Extension; 85. Upper convex portion; 86. Lower convex portion; 87. Step; 9. Base; 91. Horizontal surface; 92. Upper boss; 93. Lower boss; 10. Mounting seat; 11. Elastic retaining ring for hole; 12. Transition mounting seat. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] As shown in the figure, a bearing seal support structure includes a mounting seat 10 and a bearing seat 8. The mounting seat 10 is fixed on the outer side of the material bin wall 6. The material bin wall 6 is provided with an opening for the bearing seat 8 to pass through. The lower end of the bearing seat 8 passes through the mounting seat 10 and the material bin wall 6 in sequence and extends into the material bin. A bearing 5 is installed in the bearing seat 8. The bearing 5 includes a lower bearing 51 and an upper bearing 52. The bearing seat 8 is provided with a cylindrical step hole 1 81 and a cylindrical step hole 2 82 at one end extending into the inner side of the material bin wall 6. The cylindrical step hole 1 The inner diameter of 81 is smaller than the inner diameter of the second cylindrical step hole 82; the bearing seat 8 is provided with a step 87 around the axis of the bearing seat 8 on one side of the outer side of the material bin wall 6, and the step 87 has an extension portion 84 protruding toward the periphery of the bearing seat 8, and a lower convex portion 86 is provided below the extension portion 84, and the lower convex portion 86 is welded to the step 87, and the portion of the lower convex portion 86 beyond the step 87 is engaged with the cylindrical step hole of the mounting seat 10, and an upper convex portion 85 is provided above the extension portion 84, and the upper convex portion 85 is engaged with the groove at the bottom of the transition mounting seat 12. One end of the rotating shaft 2 on the outer side of the material bin wall 6 is the rotating shaft upper end 21, and the end of the rotating shaft 2 on the inner side of the material bin wall 6 is the rotating shaft lower end 22. The rotating shaft lower end 22 extends from the outer side of the material bin wall 6 into the inner side of the material bin wall 6 and passes through the cylindrical step hole 2 82 and the cylindrical step hole 1 81 in sequence. The cylindrical step hole 1 81 is tightly fitted with the rotating shaft 2, and there is a certain space between the cylindrical step hole 2 82 and the rotating shaft 2. A sealing ring 7 is placed in the space between the cylindrical step hole 22 and the rotating shaft 2. The sealing ring 7 is sleeved on the rotating shaft 2 by the rotating shaft upper end 21 and slides into the space. The sealing ring 7 seals the bearing seat 8 and the rotating shaft 2. After the sealing ring 7 is installed, the base 9 is sleeved on the rotating shaft 2 from the upper end 21 of the rotating shaft. The base 9 is an integrally formed structure including a transverse surface 91, an upper boss 92 and a lower boss 93. The upper boss 92 extends toward the upper end 21 of the rotating shaft, and the lower boss 93 extends toward the lower end 22 of the rotating shaft. The upper boss 92 and the lower boss 93 are located at opposite positions on both sides of the transverse surface 91. The lower boss 93 is located directly above the sealing ring 7 and abuts against the sealing ring 7. The upper boss 92 abuts against the bottom end of the upper bearing 52. After the base 9 is installed in place, the lower bearing 51 is sleeved on the rotating shaft 2 from the upper end 21 of the rotating shaft and slides off Then the bearing retaining ring 53 is sleeved on the rotating shaft 2 by the upper end 21 of the rotating shaft and slides onto the lower bearing 51, the upper bearing 52 is sleeved on the rotating shaft 2 by the upper end 21 of the rotating shaft and slides onto the bearing retaining ring 53, the upper end 21 of the rotating shaft 2 is sleeved on the rotating shaft 2 and slides onto the upper bearing 52, the round nut 3 slides onto the stop washer 4, the rotating shaft 2 is fixed with the bearing 5 through the round nut 3 and the stop washer 4, and the rotating shaft 2 is fixed with the bearing 5 through the round nut 3 and the stop washer 4, and finally the elastic retaining ring 11 is inserted into the groove 83 opened on the inner side of the upper part of the bearing seat 8 to limit the outer edge of the upper bearing 52 and limit the upward movement of the bearing 5. At this point, the installation of the rotating shaft 2, the bearing 5 and the bearing seat 8 is completed. In this structure, the rotating shaft 2 has a threaded structure, and the rotating shaft 2 is fixed on the bearing seat 8 through the round nut 3 and the stop washer 4. The rotating shaft 2 is fixed in the bearing seat 8 through the bearing 5 and fixed on the mounting seat 10 together.One end of the transition mounting seat 12 and the bearing seat 8 are fixed on the mounting seat 10 at the same time. An extension portion 84 is provided on the outer side of the upper end of the bearing seat 8. The lower protrusion 86 below the extension portion 84 abuts against the cylindrical step hole on the mounting seat 10, and the upper protrusion 85 above the extension portion 84 abuts against the groove at the bottom of the transition mounting seat 12, thereby achieving that the transition mounting seat 12 and the bearing seat 8 are both fixed on the mounting seat 10; the other end of the transition mounting seat 12 is connected to the motor 1, and the rotating shaft 2 is connected to the output end of the motor 1, completing the assembly of the entire structure. The motor 1, the transition mounting seat 12, and the bearing seat 8 are all positioned using cylindrical step holes, which not only meets the concentricity requirements between the structures, but also reduces the difficulty of assembly.
[0025] The installation process is as follows: the mounting seat 10 is first fixed to the material bin wall 6, the bearing seat 8 is fixed on the mounting seat 10, the rotating shaft 2 is installed from bottom to top, and the sealing ring 7, base 9, lower bearing 51, bearing retaining ring 53, upper bearing 52, round nut stop washer 4 are installed from top to bottom in sequence, and then the round nut 3 is tightened on the corresponding thread on the rotating shaft 2, and finally the elastic retaining ring 11 is inserted into the hole to complete the installation of the rotating shaft 2, the bearing 5 and the bearing seat 8. Then the motor 1 is installed and connected to the motor 1 through the transition mounting seat 12. The fasteners in this utility model device are on the other side of the bearing seat 8, which is isolated from the inside of the material bin. The fasteners have no possibility of falling into the bin body, and under the action of the sealing ring 7, the rotating shaft 2 will not cause leakage of materials in the material bin during rotation. The cylindrical step holes are mostly used for positioning between the various structures, which are convenient to install and have high stability.
Claims
1. A bearing support seal structure, used to be connected to the opening of a material bin and sleeved on the outside of a rotating shaft (2), characterized in that: The invention comprises a mounting seat (10) and a bearing seat (8), wherein the mounting seat (10) is connected to the outer side of a material bin wall (6), the central opening of the mounting seat (10) is the same as the opening of the material bin, the bottom end of the bearing seat (8) is sleeved through the central opening of the mounting seat (10) and the opening of the material bin in sequence, the bottom of the bearing seat (8) is provided with a cylindrical step hole (81) and a cylindrical step hole (82), the inner diameter of the cylindrical step hole (81) is smaller than the inner diameter of the cylindrical step hole (82), the cylindrical step hole (81) is sleeved on the outer side of the rotating shaft (2), the cavity between the cylindrical step hole (82) and the rotating shaft (2) is provided with a sealing ring (7), a bearing (5) is provided above the cylindrical step hole (82), and the rotating shaft (2) can be sleeved in the bearing (5).
2. A bearing support seal structure according to claim 1, characterized in that: An extension portion (84) is provided at one end of the bearing seat (8) outside the material bin wall (6), an upper convex portion (85) is provided above the extension portion (84), and a lower convex portion (86) is provided below the extension portion (84).
3. A bearing support seal structure according to claim 2, characterized in that: The bearing (5) comprises a lower bearing (51) and an upper bearing (52), and the lower bearing (51) and the upper bearing (52) are connected via a bearing retaining ring (53).
4. A bearing support seal structure according to claim 3, characterized in that: The top end of the bearing (5) is fixed to the bearing seat (8) via a round nut stop washer (4) and a round nut (3).
5. A bearing support seal structure according to claim 1, characterized in that: A base (9) is provided between the second cylindrical step hole (82) and the upper bearing (52). The base (9) is an integrally formed structure. The base (9) comprises a transverse surface (91), an upper boss (92) and a lower boss (93). The upper boss (92) extends toward the upper end (21) of the rotating shaft, and the lower boss (93) extends toward the lower end (22) of the rotating shaft. The upper boss (92) and the lower boss (93) are located at opposite positions on both sides of the transverse surface (91). The lower boss (93) is located directly above the sealing ring (7) and abuts against the sealing ring (7). The upper boss (92) abuts against the bottom end of the upper bearing (52).
6. A bearing support seal structure according to claim 5, characterized in that: A groove (83) is provided on the inner side of the upper portion of the bearing seat (8), and an elastic retaining ring (11) is used for mounting a hole in the groove (83) to limit the outer edge of the upper bearing (52).
7. A bearing support seal structure according to claim 1, characterized in that: The bearing seat (8) is connected to the motor (1) via a transition mounting seat (12).