Bearing seat double-labyrinth carrier roller sealing device

Abstract

The utility model provides a bearing seat double labyrinth carrier roller sealing device which comprises a carrier roller body, a carrier roller rod is movably connected in the carrier roller body, a clamping mechanism is fixedly connected to the inner wall of the carrier roller body, and the clamping mechanism comprises a fixing ring, a pressure spring, a connecting rod, a clamping ring and an inserting rod. The inner side of the fixing ring makes contact with the outer side of the carrier roller rod, the left side of the compression spring is fixedly connected to the interior of the clamping ring, the right side of the compression spring is fixedly connected to the interior of the fixing ring, the left side of the connecting rod is fixedly connected to the outer side of the clamping ring, and the right side of the connecting rod is movably connected to the interior of the fixing ring. When the carrier roller rod is installed and fixed, the clamping mechanism is inserted into the carrier roller body, a clamping ring is pushed through resilience force of a compression spring to clamp and fix the surface of the carrier roller rod, and the surface of the carrier roller rod is sealed through a protection pad to prevent dust from entering the interior of the carrier roller.

Description

Technical Field

[0001] The utility model relates to a double-labyrinth idler seal device for a bearing seat, belonging to the technical field of seal devices. Background Technique

[0002] The double-labyrinth idler for a bearing seat is an important accessory for conveying equipment, mainly used in a belt conveyor to support the weight of the conveyor belt and materials, and ensure the smooth operation of the conveyor belt.

[0003] Chinese Patent Publication (Publication No.: CN 210140222 U) discloses a double-labyrinth idler seal device, including a roller shell, a bearing seat and a bearing. The outer side of the bearing seat is fixedly connected to the inner wall of the roller shell, the bearing is installed inside the bearing seat, a roller shaft is fixedly connected to the inner side of the bearing, the top end of the roller shaft penetrates through the roller shell and extends to its outside, a seal cover is provided on the inner wall of the roller shell and above the bearing, a first sealing ring is fixedly connected to the inner side of the seal cover, the inner side of the first sealing ring is in contact with the surface of the roller shaft, and drag rods are fixedly connected to both the left and right sides of the inner wall of the roller shell and below the seal cover. This double-labyrinth idler seal device has a reasonable structural design and is convenient to use. It can prevent most dust, soil, oil and gas or water vapor from entering the bearing through the gap, resulting in the direct blockage of the bearing or the blockage after rusting, affecting the service life of the bearing, reducing the maintenance cost of the idler, and facilitating the full satisfaction of the use requirements;

[0004] However, most of the existing double-labyrinth idler seal devices have relatively unsatisfactory sealing performance. Some dust, soil, oil and gas or water vapor are relatively easy to enter the bearing through the gap, resulting in the direct blockage of the bearing or the blockage after rusting, affecting the service life of the bearing and increasing the maintenance cost of the idler.

[0005] Therefore, a double-labyrinth idler seal device for a bearing seat is proposed. Content of the Utility Model

[0006] In view of this, the utility model provides a double-labyrinth idler seal device for a bearing seat to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0007] The technical solution of the present utility model is realized as follows: A double-labyrinth idler seal device for a bearing housing, including an idler body, wherein a rotatable idler rod is movably connected inside the idler body, and a clamping mechanism is fixedly connected to the inner wall of the idler body. The clamping mechanism includes a fixing ring, a compression spring, a connecting rod, a clamping ring, and a plug rod. The inner side of the fixing ring contacts the outer side of the idler rod. The left side of the compression spring is fixedly connected to the inside of the clamping ring, and the right side of the compression spring is fixedly connected to the inside of the fixing ring. The left side of the connecting rod is fixedly connected to the outside of the clamping ring, and the right side of the connecting rod is movably connected to the inside of the fixing ring. The left side of the plug rod is fixedly connected to the outside of the fixing ring, and the right side of the plug rod penetrates through the inner wall of the idler body.

[0008] Further preferably, a plugging groove is provided inside the fixing ring, and the right side of the connecting rod is movably connected to the inside of the plugging groove.

[0009] Further preferably, a slot is provided inside the idler body, and the right side of the plug rod is movably connected to the inside of the slot.

[0010] Further preferably, a protective pad is fixedly connected to the inner side of the clamping ring. The inner side of the protective pad contacts the surface of the idler rod, and the material of the protective pad is soft rubber.

[0011] Further preferably, a separation layer is sleeved on the surface of the idler rod, and the outer side of the separation layer contacts the inner side of the idler body.

[0012] Further preferably, a rotating shaft is fixedly connected to the inner side of the idler rod, and the outer side of the rotating shaft contacts the inner side of the idler body.

[0013] Further preferably, a sealing ring is fixedly connected to the surface of the idler rod, and the outer side of the sealing ring is movably connected to the inner side of the idler body.

[0014] Due to the adoption of the above technical solutions in the embodiments of the present utility model, it has the following advantages:

[0015] First, through the clamping mechanism of the present utility model, when installing and fixing the idler rod, it is inserted into the inside of the idler body. The clamping ring is pushed by the resilience of the compression spring to clamp the surface of the idler rod for fixation. Through the protective pad, the surface of the idler rod is sealed to prevent dust from entering the inside of the idler.

[0016] Second, through the separation layer of the present utility model, the inside of the idler body is fully isolated to prevent dust from entering the inside of the idler body, isolate the grease inside the idler body to prevent it from flowing out, and extend the service life of the internal parts. Through the sealing ring, the normal use of the overall device is ensured.

[0017] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a schematic front view of the three-dimensional structure of the present utility model;

[0020] Figure 2 is a schematic structural view of the sealing ring of the present utility model;

[0021] Figure 3 is a schematic structural view of the clamping mechanism of the present utility model;

[0022] Figure 4 is a schematic structural view of the fixing ring of the present utility model;

[0023] Figure 5 is a schematic cross-sectional view of the idler roller body of the present utility model.

[0024] Reference numerals: 1, idler roller body; 2, idler roller rod; 3, clamping mechanism; 301, fixing ring; 302, compression spring; 303, connecting rod; 304, clamping ring; 305, insertion rod; 4, insertion slot; 5, slot; 6, protection pad; 7, separation layer; 8, rotating shaft; 9, sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0026] The following will describe the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0027] Embodiment 1

[0028] As Figures 1-5As shown in the figure, an embodiment of the utility model provides a double-labyrinth idler seal device for a bearing seat, which includes an idler body 1. A roller rod 2 is movably connected inside the idler body 1. A clamping mechanism 3 is fixedly connected to the inner wall of the idler body 1. The clamping mechanism 3 includes a fixed ring 301, a compression spring 302, a connecting rod 303, a clamping ring 304 and a plug rod 305. The inner side of the fixed ring 301 contacts the outer side of the roller rod 2. The left side of the compression spring 302 is fixedly connected to the inside of the clamping ring 304, and the right side of the compression spring 302 is fixedly connected to the inside of the fixed ring 301. The left side of the connecting rod 303 is fixedly connected to the outside of the clamping ring 304, and the right side of the connecting rod 303 is movably connected to the inside of the fixed ring 301. The left side of the plug rod 305 is fixedly connected to the outside of the fixed ring 301, and the right side of the plug rod 305 penetrates through the inner wall of the idler body 1. A plugging groove 4 is opened inside the fixed ring 301, and the right side of the connecting rod 303 is movably connected to the inside of the plug rod 305 groove. A slot 5 is opened inside the idler body 1, and the right side of the plug rod 305 is movably connected to the inside of the slot 5. A protective pad 6 is fixedly connected to the inner side of the clamping ring 304, and the inner side of the protective pad 6 contacts the surface of the roller rod 2. The material of the protective pad 6 is soft rubber.

[0029] Through the clamping mechanism 3, when installing and fixing the roller rod 2, it is inserted into the inside of the idler body 1. The clamping ring 304 is pushed by the resilience of the compression spring 302 to clamp the surface of the roller rod 2 for fixation. Through the protective pad 6, the surface of the roller rod 2 is sealed to prevent dust from entering the inside of the idler.

[0030] Embodiment 2

[0031] As Figures 1-5 shown, in one embodiment, a separation layer 7 is sleeved on the surface of the roller rod 2. The outer side of the separation layer 7 contacts the inner side of the idler body 1. A rotating shaft 8 is fixedly connected to the inner side of the roller rod 2. The outer side of the rotating shaft 8 contacts the inner side of the idler body 1. A sealing ring 9 is fixedly connected to the surface of the roller rod 2. The outer side of the sealing ring 9 is movably connected to the inner side of the idler body 1.

[0032] Through the separation layer 7, the inside of the idler body 1 is fully isolated to prevent dust from entering the inside of the idler body 1 and to isolate the grease inside the idler body 1 to prevent it from flowing out, thereby extending the service life of the internal parts. Through the sealing ring 9, the normal use of the overall device is ensured.

[0033] When the utility model works: First, pull the clamping ring 304 to move the clamping ring 304 outward. While moving outward, compress the compression spring 302, so that the clamping ring 304 moves outward along the movement track provided by the insertion rod 305, open the clamping ring 304 to install the idler rod 2. Through the sealing ring 9 and the separation layer 7, when in use, prevent dust from entering the inside of the idler body 1, which may cause component wear and reduce the service life of the components. While preventing dust from entering, it can also allow the grease inside the idler body 1 to flow out.

[0034] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A double-labyrinth idler seal device for a bearing housing, comprising an idler body (1), characterized in that: Inside the idler roller body (1), an idler roller rod (2) is movably connected. Inside the inner wall of the idler roller body (1), a clamping mechanism (3) is fixedly connected. The clamping mechanism (3) includes a fixing ring (301), a compression spring (302), a connecting rod (303), a clamping ring (304), and an inserting rod (305). The inner side of the fixing ring (301) is in contact with the outer side of the idler roller rod (2). The left side of the compression spring (302) is fixedly connected inside the clamping ring (304). The right side of the compression spring (302) is fixedly connected inside the fixing ring (301). The left side of the connecting rod (303) is fixedly connected to the outer side of the clamping ring (304). The right side of the connecting rod (303) is movably connected inside the fixing ring (301). The left side of the inserting rod (305) is fixedly connected to the outer side of the fixing ring (301). The right side of the inserting rod (305) penetrates through to the inner wall of the idler roller body (1).

2. The double-labyrinth idler seal device for a bearing housing according to claim 1, wherein: An insertion slot (4) is formed inside the fixing ring (301). The right side of the connecting rod (303) is movably connected inside the slot of the inserting rod (305).

3. The double-labyrinth idler seal device for a bearing housing according to claim 1, characterized in that: A slot (5) is formed inside the idler roller body (1). The right side of the inserting rod (305) is movably connected inside the slot (5).

4. A double-labyrinth idler seal device for a bearing housing according to claim 1, characterized in that: A protective pad (6) is fixedly connected to the inner side of the clamping ring (304). The inner side of the protective pad (6) is in contact with the surface of the idler roller rod (2). The material of the protective pad (6) is soft rubber.

5. A double-labyrinth idler seal device for a bearing housing according to claim 4, characterized in that: A separation layer (7) is sleeved on the surface of the idler roller rod (2). The outer side of the separation layer (7) is in contact with the inner side of the idler roller body (1).

6. A double-labyrinth idler seal device for a bearing housing according to claim 5, characterized in that: A rotating shaft (8) is fixedly connected to the inner side of the idler roller rod (2). The outer side of the rotating shaft (8) is in contact with the inner side of the idler roller body (1).

7. The double-labyrinth idler seal device for a bearing housing according to claim 6, characterized in that: A sealing ring (9) is fixedly connected to the surface of the idler roller rod (2). The outer side of the sealing ring (9) is movably connected to the inner side of the idler roller body (1).

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