Combined floating sealing structure
By adopting a combined floating seal structure in the reducer, including a floating seal plate, an end surface seal ring, a first O-ring and a press plate, the problem of seal damage caused by slight swing of the shaft is solved, and a stable seal between the shaft and the reducer case is achieved.
Patent Information
- Application Number
- CN202421838045.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The sealing between the shaft of the existing reducer and the box is easily damaged when the shaft swings slightly, resulting in failure of the sealing property.
A combined floating seal structure is adopted, including a floating seal plate, an end surface seal ring, a first O-ring and a press plate. Through the cooperation of these components, a floating seal between the rotating shaft and the reducer case is realized.
The rotation shaft can float with the floating seal plate when it rotates, maintain the sealing between the reducer case and the rotation shaft, and avoid the failure of the sealing when the rotation shaft swings.
Smart Images
Figure CN222950375U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reducer sealing, in particular to a combined floating sealing structure. Background Art
[0002] The reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the required number of revolutions and obtain a larger torque. Among the mechanisms currently used to transmit power and motion, reducers are widely used in metallurgy, mining, lifting, transportation, cement, construction, chemical industry, textile, printing and dyeing, pharmaceutical and other fields.
[0003] When the reducer is connected to an external structure through a rotating shaft, the rotating shaft needs to pass through the reducer housing. In order to ensure the sealing between the rotating shaft and the reducer housing, a sealing ring is arranged between the rotating shaft and the reducer housing. However, after the existing rotating shaft and the reducer are sealed by the sealing ring, the position of the rotating shaft is fixed and cannot be slightly swung along the axis. If the rotating shaft swings slightly, the sealing between the rotating shaft and the reducer housing will be destroyed. Utility Model Content
[0004] The purpose of the utility model is to provide a combined floating seal structure for solving the above technical problems.
[0005] The technical solution adopted by the utility model is as follows:
[0006] A combined floating seal structure is used to be installed on a reducer housing and a rotating shaft, comprising a floating seal plate, an end face seal ring, a first O-ring and a pressure plate. The pressure plate is installed on the reducer housing and is located at the outer edge of the rotating shaft. A cavity is formed between the pressure plate, the reducer housing and the rotating shaft. The floating seal plate is arranged in the cavity and is located at the outer edge of the rotating shaft. The end face seal ring is arranged between the floating seal plate and the pressure plate, and the first O-ring is arranged between the floating seal plate and the rotating shaft.
[0007] Preferably, there is a gap between the outer wall of the floating sealing plate and the inner wall of the cavity.
[0008] Preferably, the pressure plate is connected to the reducer housing by screws.
[0009] Preferably, a second O-ring is further included, and the second O-ring is arranged between the pressure plate and the reducer housing.
[0010] Preferably, a first mounting groove is formed on the inner peripheral wall of the floating sealing plate, and the first O-ring is disposed in the first mounting groove.
[0011] Preferably, the reducer housing is provided with a second mounting groove, and the second O-ring is arranged in the second mounting groove.
[0012] Preferably, a third mounting groove is formed on the lower surface of the floating sealing plate, and the end face sealing ring is arranged in the third mounting groove.
[0013] The above technical solution has the following advantages or beneficial effects:
[0014] In this embodiment, by setting the floating sealing plate, the end face sealing ring, the first O-ring and the pressure plate, a floating seal between the reducer housing and the rotating shaft can be achieved. When the rotating shaft rotates, the floating sealing plate can float with it, thereby always achieving the seal between the reducer housing and the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the combined floating seal structure in the utility model;
[0016] Figure 2 It is a structural schematic diagram of the utility model when the rotating shaft swings.
[0017] In the figure: 1. reducer housing; 2. rotating shaft; 3. floating sealing plate; 4. end face sealing ring; 5. first O-ring; 6. pressure plate; 7. cavity; 8. screw; 9. second O-ring. DETAILED DESCRIPTION
[0018] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.
[0019] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0021] Figure 1 It is a structural schematic diagram of the combined floating seal structure in the utility model; Figure 2 This is a schematic diagram of the structure of the utility model when the rotating shaft swings. Figure 1 to Figure 2 As shown, a preferred embodiment is shown, which is a combined floating seal structure for installation on the reducer housing 1 and the rotating shaft 2, including a floating seal plate 3, an end face seal ring 4, a first O-ring 5 and a pressure plate 6. The pressure plate 6 is installed on the reducer housing 1 and is located at the outer edge of the rotating shaft 2. A cavity 7 is formed between the pressure plate 6, the reducer housing 1 and the rotating shaft 2. The floating seal plate 3 is arranged in the cavity 7 and is located at the outer edge of the rotating shaft 2. The end face seal ring 4 is arranged between the floating seal plate 3 and the pressure plate 6. The first O-ring 5 is arranged between the floating seal plate 3 and the rotating shaft 2. In this embodiment, the first O-ring 5 is used for sealing between the floating seal plate 3 and the rotating shaft 2, the end face seal ring 4 is used for sealing between the floating seal plate 3 and the pressure plate 6, and the pressure plate 6 is used to install the floating seal plate 3 on the reducer housing 1, wherein the floating seal plate 3 can float in the cavity 7 and can float following the swing of the rotating shaft 2.
[0022] The longitudinal section of one side of the pressure plate 6 in this embodiment is L-shaped, so as to form a cavity 7 between the rotating shaft 2 and the reducer housing 1, wherein a certain gap is provided between the inner peripheral wall of the pressure plate 6 and the rotating shaft 2 to provide space for the rotating shaft 2 to swing.
[0023] Further, as a preferred embodiment, there is a gap between the outer wall of the floating sealing plate 3 and the inner wall of the cavity 7. Figure 1 As shown, there is a gap between the outer peripheral wall of the floating sealing plate 3 and the inner peripheral wall of the cavity 7, and there is a gap between the lower surface of the floating sealing plate 3 and the lower inner wall of the cavity 7, and the lower end of the end face sealing ring 4 contacts the lower inner wall of the cavity 7. The setting of the gap allows the floating sealing plate 3 to move in the cavity 7.
[0024] Further, as a preferred embodiment, the pressing plate 6 is connected to the reducer housing 1 by means of screws 8. The screws 8 pass through the pressing plate 6 and are connected to the reducer housing 1, thereby connecting and fixing the pressing plate 6 to the reducer housing 1.
[0025] Further, as a preferred embodiment, a second O-ring 9 is further included, and a second O-ring 9 is disposed between the pressing plate 6 and the reducer housing 1. By disposing the second O-ring 9, sealing between the pressing plate 6 and the reducer housing 1 can be achieved.
[0026] Further, as a preferred embodiment, the inner peripheral wall of the floating sealing plate 3 is provided with a first mounting groove, and the first O-ring 5 is arranged in the first mounting groove. The reducer housing 1 is provided with a second mounting groove, and the second O-ring 9 is arranged in the second mounting groove. The lower surface of the floating sealing plate 3 is provided with a third mounting groove, and the end face sealing ring 4 is arranged in the third mounting groove. In this embodiment, the first O-ring 5 is installed in the first mounting groove by elastic deformation, and the second O-ring 9 is installed in the second mounting groove by elastic deformation, and the end face sealing ring 4 is installed in the third mounting groove by elastic deformation.
[0027] See also Figure 2 As shown, when the shaft 2 swings to the left of the center line, the shaft 2 can drive the floating sealing plate 3, the first O-ring 5 and the end face sealing ring 4 to move to the left in the cavity 7, and can always maintain the seal between the floating sealing plate 3 and the shaft 2, and cooperate with the arrangement of the pressure plate 6, the second O-ring 9 and the end face sealing ring 4 to ensure that the shaft 2 always maintains a seal with the reducer housing 1 when swinging. When the shaft 2 swings left and right along the center line, it can drive the floating sealing plate 3, the first O-ring 5 and the end face sealing ring 4 to float left and right in the cavity 7.
[0028] During assembly, first install the first O-ring 5 and the end face sealing ring 4 in the first installation groove and the third installation groove on the floating sealing plate 3, and then install the floating sealing plate 3 assembled by the pressing plate 6 through the screws 8 on the reducer housing 1. For details, see Figure 1 shown.
[0029] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.
Claims
1. A combined floating seal structure, used for installation on a reducer housing and a rotating shaft, characterized in that: It includes a floating sealing plate, an end face sealing ring, a first O-ring and a pressure plate. The pressure plate is installed on the reducer housing and is located at the outer edge of the rotating shaft. A cavity is formed between the pressure plate, the reducer housing and the rotating shaft. The floating sealing plate is arranged in the cavity and is located at the outer edge of the rotating shaft. The end face sealing ring is arranged between the floating sealing plate and the pressure plate, and the first O-ring is arranged between the floating sealing plate and the rotating shaft.
2. The combined floating seal structure according to claim 1, characterized in that: A gap is provided between the outer wall of the floating sealing plate and the inner wall of the cavity.
3. The combined floating seal structure according to claim 1, characterized in that: The pressing plate is connected to the reducer housing through screws.
4. The combined floating seal structure according to claim 1, characterized in that: It also includes a second O-ring, which is arranged between the pressure plate and the reducer housing.
5. The combined floating seal structure according to claim 1, characterized in that: The inner peripheral wall of the floating sealing plate is provided with a first installation groove, and the first O-ring is arranged in the first installation groove.
6. The combined floating seal structure according to claim 4, characterized in that: The reducer housing is provided with a second mounting groove, and the second O-ring is arranged in the second mounting groove.
7. The combined floating seal structure according to claim 1, characterized in that: A third mounting groove is formed on the lower surface of the floating sealing plate, and the end face sealing ring is arranged in the third mounting groove.