Split type large-shaft-diameter shaft seal

Abstract

The utility model discloses a split type large-shaft-diameter shaft seal, and relates to the technical field of split type shaft seals. Comprising a fixed seat, a fixed ring and a movable ring are sequentially arranged on the outer side of the fixed seat, the fixed ring is connected with the fixed seat, and the movable ring rotates relative to the fixed ring; the pressing mechanism is arranged on the outer side of the fixing base and used for providing pressure for the movable ring, the pressing mechanism comprises a pressing piece and an adjusting piece, the pressing piece is arranged on the outer side of the fixing base and used for limiting the movable ring, and the adjusting piece is arranged on the outer side of the pressing piece and used for controlling the pressing piece. Through the arrangement of the pressing piece and the adjusting piece, the connecting cover, the pressing plate, the gear, the connecting rod, the connecting sleeve, the limiting plate and the arc-shaped teeth are matched, so that the pressing plate is controlled to uniformly apply pressure to the movable ring in the using process, and the situation that synchronous force application and equivalent adjustment are difficult to guarantee when a plurality of bolts are independently rotated and tightened is avoided; and the sealing effect of the moving ring and the static ring is ensured.

Description

Technical Field

[0001] This utility model relates to the field of split shaft seal technology, specifically to a split large-diameter shaft seal. Background Technology

[0002] Split shaft seals are sealing devices used for rotating shafts. They are mainly used to prevent fluid leakage along the gap between the shaft and the equipment cavity, and also to prevent external impurities from entering the equipment. Unlike the integral structure of ordinary shaft seals, split shaft seals adopt a detachable design and are usually composed of two or more parts. This design eliminates the need to pull the shaft out of the equipment or disassemble the equipment extensively during installation and removal.

[0003] During the installation of split shaft seals, in order to ensure a tight fit and stable contact between the rotating and stationary rings, multiple bolts are usually used to adjust the contact pressure between them. In actual operation, since multiple bolts need to be manually rotated and tightened individually, it is difficult to ensure synchronous force application and equal adjustment. This can easily lead to uneven pressure applied by each bolt, causing an imbalance of force between the rotating and stationary rings, misalignment of the sealing surface, and sealing failure. Therefore, a split large-diameter shaft seal is proposed. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that multiple bolts need to be manually rotated and tightened individually, which makes it difficult to ensure synchronous force application and equal adjustment. This can easily lead to uneven pressure on each bolt, causing imbalance of force between the dynamic and static rings, and misalignment of the sealing surface, resulting in sealing failure. This utility model provides a split-type large-diameter shaft seal.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A split-type large-diameter shaft seal, comprising:

[0007] A fixed base, wherein a stationary ring and a rotating ring are sequentially provided on the outer side of the fixed base, the stationary ring is connected to the fixed base, and the rotating ring rotates relative to the stationary ring;

[0008] A pressing mechanism is disposed on the outside of the fixed base and is used to provide pressure to the moving ring. The pressing mechanism includes a pressing element and an adjusting element. The pressing element is disposed on the outside of the fixed base and is used to limit the movement of the moving ring. The adjusting element is disposed on the outside of the pressing element and is used to control the pressing element. The pressing element cooperates with the adjusting element to adjust the pressure of the moving ring.

[0009] Furthermore, the pressing component includes a connecting cover with one open end. A connecting rod is provided inside the connecting cover, and the connecting rod passes through the connecting cover. There are multiple connecting rods, and the connecting rods are connected to the fixed base. A pressure plate is provided inside the connecting cover, and the pressure plate rotates inside the connecting cover.

[0010] Furthermore, the moving ring has a placement groove on the side opposite to the pressure plate, and there are multiple placement grooves. A spring is provided inside the placement groove, and one end of the spring abuts against the pressure plate.

[0011] Furthermore, the adjusting component includes multiple limiting plates, which are disposed on the outside of the connecting cover. The outer side of the limiting plate is provided with multiple arc-shaped teeth, which rotate on the outside of the limiting plate. Multiple gears mesh with the outer side of the arc-shaped teeth, and each gear corresponds to a connecting rod. A connecting sleeve is provided inside the gear, and the connecting sleeve is threadedly connected to the connecting rod.

[0012] Furthermore, a connecting groove is provided at one end of the arc-shaped tooth, and a connecting block is provided at the other end of the arc-shaped tooth, and the arc-shaped tooth and the connecting block are adapted to each other.

[0013] Furthermore, the pressure plate is also provided with a thrust bearing on the side opposite to the connecting cover.

[0014] The beneficial effects of this utility model are as follows:

[0015] This utility model, through the setting of pressing and adjusting components, achieves the coordination of connecting cover, pressure plate, gear, connecting rod, connecting sleeve, limiting plate and arc-shaped teeth, thereby controlling the pressure plate to apply pressure evenly to the moving ring during use, avoiding the difficulty in ensuring synchronous force and equal adjustment when multiple bolts are rotated and tightened individually, and ensuring the sealing effect between the moving ring and the stationary ring. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a partial sectional view of the fixing base of this utility model;

[0019] Figure 4 This is a utility model Figure 3 Enlarged view of section A in the middle;

[0020] Figure 5 This is an enlarged view of the arc-shaped tooth of this utility model;

[0021] Reference numerals in the attached drawings: 1. Fixed base; 101. Stationary ring; 102. Moving ring; 103. Spring; 2. Pressing component; 201. Connecting cover; 202. Pressure plate; 203. Gear; 204. Connecting rod; 205. Connecting sleeve; 3. Adjusting component; 301. Limiting plate; 302. Arc-shaped tooth; 303. Connecting groove; 304. Connecting block. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figures 1 to 5As shown, a split-type large-diameter shaft seal includes: a fixed base 1, with a stationary ring 101 and a rotating ring 102 sequentially arranged on the outer side of the fixed base 1. The stationary ring 101 is connected to the fixed base 1, and the rotating ring 102 rotates relative to the stationary ring 101; a pressing mechanism, disposed on the outer side of the fixed base 1, for providing pressure to the rotating ring 102. The pressing mechanism includes a pressing element 2 and an adjusting element 3. The pressing element 2 is disposed on the outer side of the fixed base 1 for limiting the position of the rotating ring 102, and the adjusting element 3 is disposed on the outer side of the pressing element 2 for controlling the pressing element 2. The pressing element 2 cooperates with the adjusting element 3 to press the rotating ring 102. The pressure adjustment is as follows: During use, the fixed seat 1 and the stationary ring 101 are first installed on the outside of the equipment in sequence. Then, the pressing element 2 and the rotating ring 102 are installed on the outside of the rotating shaft, so that the rotating ring 102 rotates synchronously with the rotating shaft, ensuring that the rotating ring 102 cooperates with the stationary ring 101 to seal the oil. During the oil sealing process, pressure is applied to the rotating ring 102 through the cooperation of the adjusting element 3 and the pressing element 2 to ensure the sealing effect during the contact process between the rotating ring 102 and the stationary ring 101. The fixed seat 1, the stationary ring 101 and the rotating ring 102 are all existing technologies and will not be explained in detail here.

[0027] like Figures 1 to 5 As shown, the pressing component 2 includes a connecting cover 201, which is open at one end. A connecting rod 204 is provided inside the connecting cover 201, passing through it. Multiple connecting rods 204 are connected to the fixed base 1. A pressure plate 202 is provided inside the connecting cover 201, rotating within it. Specifically, the connecting cover 201 applies pressure to the pressure plate 202 and the moving ring 102 during use, ensuring stability during the contact between the moving ring 102 and the stationary ring 101. The connecting rod 204 is connected to the fixed base 1 via threads. The pressure between the moving ring 102 and the stationary ring 101 is adjusted by adjusting the distance between the connecting cover 201 and the fixed base 1, ensuring a sealing effect during use.

[0028] like Figures 1 to 5 As shown, the rotating ring 102 has a placement groove on the side opposite to the pressure plate 202, and there are multiple placement grooves. A spring 103 is installed inside the placement groove, and one end of the spring 103 abuts against the pressure plate 202. Specifically, during use, the spring 103 connects the pressure plate 202 and the rotating ring 102, thereby increasing the pressure adjustment range of the pressure plate 202 during use. The fixed base 1, the stationary ring 101, the rotating ring 102, the connecting cover 201 and the pressure plate 202 are all split, and the dimensions of the fixed base 1, the stationary ring 101, the rotating ring 102, the connecting cover 201 and the pressure plate 202 can be selected according to actual usage requirements, thereby improving the convenience of the installation process.

[0029] like Figures 1 to 5As shown, the adjusting component 3 includes multiple limiting plates 301, which are located outside the connecting cover 201. Multiple arc-shaped teeth 302 are provided on the outer side of the limiting plates 301, and these teeth rotate outside the limiting plates 301. Multiple gears 203 mesh with the outer side of the arc-shaped teeth 302, and each gear 203 corresponds to a connecting rod 204. A connecting sleeve 205 is provided inside each gear 203, and the connecting sleeve 205 is threadedly connected to the connecting rod 204. Specifically, the limiting plates 301 and the connecting cover 201 can be connected by bolts or clips, facilitating adjustment during use. The limiting plate 301 is installed and removed. During use, the limiting plate 301 can limit the arc-shaped tooth 302, ensuring that the arc-shaped tooth 302 can stably drive multiple gears 203 and connecting sleeve 205 to rotate synchronously. During the rotation, the gear 203 cooperates with the connecting rod 204 to adjust the distance between the connecting cover 201 and the fixed seat 1, thereby realizing the pressure adjustment between the stationary ring 101 and the moving ring 102. During the synchronous rotation of multiple gears 203 and connecting sleeve 205, the connecting cover 201 can be controlled to apply pressure to the moving ring 102 evenly, preventing the connecting cover 201 from tilting during the adjustment process.

[0030] like Figures 1 to 5 As shown, one end of the arc-shaped tooth 302 has a connecting groove 303, and the other end of the arc-shaped tooth 302 has a connecting block 304. The arc-shaped tooth 302 and the connecting block 304 are compatible. Specifically, during use, multiple arc-shaped teeth 302 are assembled by the cooperation of the connecting block 304 and the connecting groove 303, thereby improving the ease of installation of the arc-shaped tooth 302. The compatibility of the connecting groove 303 and the connecting block 304 means that the connecting block 304 can be inserted into the connecting groove 303. The connecting groove 303 and the connecting block 304 have the same shape. The connecting block 304 can be T-shaped or dovetail-shaped. The outer side of the arc-shaped tooth 302 also has multiple control holes for connecting to a wrench. The arc-shaped tooth 302 is rotated by controlling the wrench through the control holes.

[0031] like Figures 1 to 5 As shown, the pressure plate 202 is also provided with a thrust bearing on the side opposite to the connecting cover 201. Specifically, the thrust bearing isolates the pressure plate 202 from the connecting cover 201 during use, ensuring that the pressure plate 202 rotates smoothly during use.

[0032] like Figures 1 to 5As shown, the working state of this split-type large-diameter shaft seal is as follows: When sealing the rotation, the fixed seat 1, stationary ring 101, rotating ring 102, connecting cover 201 and pressure plate 202 are first installed. Then, the distance between the connecting cover 201 and the fixed seat 1 is adjusted by the cooperation of the limiting plate 301, gear 203, connecting sleeve 205 and connecting rod 204, thereby realizing the pressure adjustment between the rotating ring 102 and the stationary ring 101 to ensure the oil sealing effect.

[0033] In summary, this utility model includes: a fixed base 1, with a stationary ring 101 and a rotating ring 102 sequentially arranged on the outer side of the fixed base 1. The stationary ring 101 is connected to the fixed base 1, and the rotating ring 102 rotates relative to the stationary ring 101; a pressing mechanism, disposed on the outer side of the fixed base 1, for providing pressure to the rotating ring 102. The pressing mechanism includes a pressing member 2 and an adjusting member 3. The pressing member 2 is disposed on the outer side of the fixed base 1 for limiting the position of the rotating ring 102, and the adjusting member 3 is disposed on the outer side of the pressing member 2 for controlling the pressing member 2. 2. The pressure of the moving ring 102 is adjusted by the adjustment component 3. The present invention, through the setting of the pressing component 2 and the adjustment component 3, realizes the cooperation of the connecting cover 201, the pressure plate 202, the gear 203, the connecting rod 204, the connecting sleeve 205, the limiting plate 301 and the arc-shaped tooth 302, so as to control the pressure plate 202 to apply pressure evenly to the moving ring 102 during use, so as to avoid the difficulty in ensuring synchronous force and equal adjustment when multiple bolts are rotated and tightened individually, and ensure the sealing effect between the moving ring 102 and the stationary ring 101.

[0034] 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 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A split-type large-diameter shaft seal, characterized in that, include: A fixed base, wherein a stationary ring and a rotating ring are sequentially provided on the outer side of the fixed base, the stationary ring is connected to the fixed base, and the rotating ring rotates relative to the stationary ring; A pressing mechanism is disposed on the outside of the fixed base and is used to provide pressure to the moving ring. The pressing mechanism includes a pressing element and an adjusting element. The pressing element is disposed on the outside of the fixed base and is used to limit the movement of the moving ring. The adjusting element is disposed on the outside of the pressing element and is used to control the pressing element. The pressing element cooperates with the adjusting element to adjust the pressure of the moving ring.

2. The split-type large-diameter shaft seal according to claim 1, characterized in that, The pressing component includes a connecting cover with one open end. A connecting rod is provided inside the connecting cover, and the connecting rod passes through the connecting cover. There are multiple connecting rods, and the connecting rods are connected to a fixed base. A pressure plate is provided inside the connecting cover, and the pressure plate rotates inside the connecting cover.

3. A split-type large-diameter shaft seal according to claim 1, characterized in that, The moving ring has a placement groove on the side opposite to the pressure plate, and there are multiple placement grooves. A spring is installed inside the placement groove, and one end of the spring abuts against the pressure plate.

4. A split-type large-diameter shaft seal according to claim 2, characterized in that, The adjusting component includes multiple limiting plates, which are disposed on the outside of the connecting cover. The outer side of the limiting plate is provided with multiple arc-shaped teeth, which rotate outside the limiting plate. Multiple gears mesh with the outer side of the arc-shaped teeth, and each gear corresponds to a connecting rod. A connecting sleeve is provided inside the gear, and the connecting sleeve is threadedly connected to the connecting rod.

5. A split-type large-diameter shaft seal according to claim 4, characterized in that, One end of the arc-shaped tooth has a connecting groove, and the other end of the arc-shaped tooth has a connecting block, and the arc-shaped tooth and the connecting block are adapted to each other.

6. A split-type large-diameter shaft seal according to claim 2, characterized in that, The pressure plate is also provided with a thrust bearing on the side opposite to the connecting cover.

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