A sealed roll

Abstract

The utility model discloses a kind of sealed carrier roller, it is related to carrier roller technical field, including carrier roller main body, still include: first collar, it is detachably set between the bearing seat of the carrier roller main body and the bearing of the carrier roller main body, first static sealing assembly and second static sealing assembly are arranged between the first collar and the bearing seat;Second collar, it is detachably set on the mandrel of the carrier roller main body and located in the first collar, third static sealing assembly is arranged between the second collar and the mandrel, first dynamic sealing assembly and second dynamic sealing assembly are arranged between the second collar and the first collar.The utility model aims at improving the sealing performance of carrier roller.

Description

Technical Field

[0001] This utility model relates to the field of idler roller technology, and in particular to a sealed idler roller. Background Technology

[0002] Belt conveyors are widely used in metallurgy, mining, grain, steel, food processing, cement, water conservancy, and ports as material transport equipment. In belt conveyors, idlers play a crucial role in supporting the conveyor belt and the weight of the materials; they are the most frequently used and replaced components.

[0003] Patent CN206939746U discloses a dynamic spiral sealing roller. The inner wall of the spiral sealing sleeve is threaded, with the thread direction opposite to the normal rotation direction of the spiral sealing sleeve. A gap is left between the spiral sealing sleeve and the sealing roller. When water and dust impurities enter the sealing gap, the spiral action actively drives the water and dust impurities out of the seal, utilizing the principle of a screw pump.

[0004] However, the inventors believe that the above-mentioned patent can only play a "sealing" role when the thread is running. When the belt conveyor stops running, the dust, water and water vapor in the environment will not disappear immediately. They can easily enter the interior through the gaps and have an adverse effect on the bearings. Moreover, due to the existence of the gaps, even during the operation of the belt conveyor, water and fine dust can still easily enter, resulting in poor sealing effect.

[0005] Therefore, a sealed idler roller needs to be developed to address the aforementioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a sealing idler roller that improves the sealing performance of the idler roller.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model discloses a sealing idler roller, including an idler roller body, and further comprising: The first collar is detachably disposed between the bearing seat of the idler body and the bearing of the idler body, and a first static sealing assembly and a second static sealing assembly are disposed between the first collar and the bearing seat. The second sleeve ring is detachably mounted on the spindle of the idler roller body and located inside the first sleeve ring. A third static sealing assembly is provided between the second sleeve ring and the spindle, and a first dynamic sealing assembly and a second dynamic sealing assembly are provided between the second sleeve ring and the first sleeve ring.

[0008] Optionally, the first static sealing assembly includes a rubber ring, which is fitted onto the first annular groove on the outer circumference of the first collar and abuts against the inner wall of the bearing seat.

[0009] Optionally, the second static sealing assembly includes a first annular wool felt pad, which is fitted onto a second annular groove on the outer circumference of the first collar and abuts against the inner wall of the bearing seat. The first annular wool felt pad is located on the side of the rubber ring away from the bearing.

[0010] Optionally, one end of the first collar contacts one end of the outer ring of the bearing, and a first elastic retaining ring is installed on the bearing housing, the first elastic retaining ring contacting the end of the first collar away from the bearing.

[0011] Optionally, the third static sealing assembly includes an annular rubber gasket, a step is provided on the mandrel, the annular rubber gasket is sleeved on the step, and one end of the second collar abuts against the annular rubber gasket.

[0012] Optionally, the first dynamic sealing assembly includes a rubber ring, which is sleeved on the third annular groove on the outer circumference of the second sleeve ring. The rubber ring is located at the end of the second sleeve ring near the bearing. Multiple annular protrusions are integrally formed and axially spaced on the outer wall of the rubber ring, and the annular protrusions abut against the inner wall of the first sleeve ring.

[0013] Optionally, the second dynamic seal assembly is located at the end of the second collar away from the bearing; the second dynamic seal assembly includes a second annular wool felt pad, a third annular wool felt pad, and a PTFE membrane, wherein the second annular wool felt pad, the third annular wool felt pad, and the PTFE membrane are all sleeved on the fourth annular groove on the outer circumference of the second collar, and the PTFE membrane is sandwiched between the second annular wool felt pad and the third annular wool felt pad.

[0014] Optionally, the mandrel is provided with a threaded section, which is threadedly connected to the second collar, and a second elastic retaining ring is installed on the mandrel, which contacts the end of the second collar away from the bearing.

[0015] Optionally, the second collar has multiple blind holes at the end furthest from the bearing for engaging with the caliper.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This invention improves the sealing performance of the idler roller by setting up multiple static and dynamic sealing components, extends the service life of the idler roller, reduces the probability of failure during the operation of the belt conveyor, and improves its applicability to complex working conditions. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged structural diagram of a local part of the structure; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0019] Explanation of reference numerals in the attached drawings: 100, first collar; 200, bearing housing; 210, first elastic retaining ring; 300, bearing; 400, second collar; 410, blind hole; 500, mandrel; 510, threaded section; 520, second elastic retaining ring; 600, rubber ring; 700, first annular wool felt pad; 800, PTFE membrane; 900, annular rubber pad; 1000, rubber ring; 1010, annular protrusion; 1100, second annular wool felt pad; 1200, third annular wool felt pad; 1300, roller skin. Detailed Implementation

[0020] The core of this utility model is to provide a sealing idler roller, which aims to improve the sealing performance of the idler roller.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "setting", "installing", "connecting", "joining", "fixing", "sleeving", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0024] In a specific embodiment of this utility model, the roller body includes a roller shell 1300, a bearing housing 200, a bearing 300, and a spindle 500. The bearing housing 200 is welded and fixed to both ends of the roller shell 1300. The bearing 300 is interference-fitted into the bearing housing 200, and the inner ring of the bearing 300 is interference-fitted with the spindle 500. This is prior art and will not be elaborated further here. This application also includes: The first collar 100 is detachably disposed between the bearing seat 200 of the idler body and the bearing 300 of the idler body. A first static sealing assembly and a second static sealing assembly are disposed between the first collar 100 and the bearing seat 200. The second collar 400 is detachably mounted on the spindle 500 of the idler roller body and located inside the first collar 100. A third static sealing assembly is provided between the second collar 400 and the spindle 500, and a first dynamic sealing assembly and a second dynamic sealing assembly are provided between the second collar 400 and the first collar 100.

[0025] In a specific embodiment of this utility model, the first static sealing component includes a rubber ring 600. The rubber ring 600 is sleeved on the first annular groove on the outer circumference of the first collar 100 and abuts against the inner wall of the bearing seat 200. The elastic deformation of the rubber ring 600 achieves a sealing effect.

[0026] In a specific embodiment of this utility model, the second static sealing assembly includes a first annular wool felt pad 700. The first annular wool felt pad 700 is fitted onto the second annular groove on the outer circumference of the first collar 100 and abuts against the inner wall of the bearing seat 200. The first annular wool felt pad 700 is located on the side of the rubber ring 600 away from the bearing 300. Wool felt has the characteristics of being soft and tough, with good fiber elasticity, not easily deformed, and has a good dustproof and waterproof effect, reducing the burden on the rubber ring 600 and improving the sealing effect.

[0027] In a specific embodiment of this utility model, one end of the first collar 100 is in contact with one end of the outer ring of the bearing 300, and a first elastic retaining spring 210 is installed on the bearing seat 200. The first elastic retaining spring 210 is in contact with the end of the first collar 100 away from the bearing 300 to prevent the first collar 100 from falling out.

[0028] In a specific embodiment of this utility model, the third static sealing component includes an annular rubber gasket 900, a step is provided on the spindle 500, the annular rubber gasket 900 is sleeved on the step, and one end of the second ring 400 abuts against the annular rubber gasket 900. The sealing effect is achieved by utilizing the elastic deformation of the annular rubber gasket 900.

[0029] In a specific embodiment of this utility model, the first dynamic sealing assembly includes a rubber ring 1000, which is sleeved on the third annular groove on the outer circumferential wall of the second sleeve ring 400. The rubber ring 1000 is located at the end of the second sleeve ring 400 near the bearing 300. Multiple annular protrusions 1010 are integrally formed and axially spaced on the outer wall of the rubber ring 1000, and these annular protrusions 1010 abut against the inner wall of the first sleeve ring 100. The multiple annular protrusions 1010 form multiple barriers, achieving a sealing effect.

[0030] In a specific embodiment of this utility model, the second dynamic sealing assembly is located at the end of the second collar 400 away from the bearing 300; the second dynamic sealing assembly includes a second annular wool felt pad 1100, a third annular wool felt pad 1200 and a PTFE membrane 800, the second annular wool felt pad 1100, the third annular wool felt pad 1200 and the PTFE membrane 800 are all sleeved on the fourth annular groove on the outer circumference of the second collar 400, and the PTFE membrane 800 is sandwiched between the second annular wool felt pad 1100 and the third annular wool felt pad 1200.

[0031] PTFE membranes are high-performance materials made from the unique fibrillary structure, smooth surface, chemical resistance, air permeability while remaining waterproof, high air permeability, flame retardancy, high temperature resistance, strong acid and alkali resistance, and non-toxicity of polytetrafluoroethylene microporous membranes. They have been successfully applied in atmospheric dust removal and air purification. These membranes feature low operating resistance, fast filtration speed, long service life, and reusability. Their surface contains over a billion micropores per square centimeter, each with a diameter of 0.1μm-0.5μm, hundreds of times smaller than the 20μm-100μm diameter of water molecules, thus exhibiting excellent waterproof properties. Applying a PTFE membrane to a second dynamic sealing component, sandwiched between two annular wool felt pads, effectively prevents dust, water, and moisture from entering, utilizing both the waterproof and dustproof properties of the wool felt pads and the waterproof and filtration properties of the PTFE membrane.

[0032] In a specific embodiment of this utility model, a threaded section 510 is provided on the mandrel 500, which is threadedly connected to the second collar 400. A second elastic retaining spring 520 is installed on the mandrel 500, and the second elastic retaining spring 520 contacts the end of the second collar 400 away from the bearing 300. The second elastic retaining spring 520 can limit the second collar 400 and prevent it from loosening during the operation of the belt conveyor.

[0033] In one specific embodiment of this utility model, the end of the second collar 400 away from the bearing 300 is provided with a plurality of blind holes 410 for engaging with calipers. When disassembling or installing the second collar 400, the calipers are engaged with the blind holes 410, thereby driving the second collar 400 to rotate.

[0034] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably, and the embodiments can be combined with each other. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0035] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A sealing idler roller, comprising an idler roller body, characterized in that, Also includes: The first collar (100) is detachably disposed between the bearing seat (200) of the idler body and the bearing (300) of the idler body. A first static sealing assembly and a second static sealing assembly are disposed between the first collar (100) and the bearing seat (200). The second collar (400) is detachably mounted on the spindle (500) of the roller body and located inside the first collar (100). A third static sealing assembly is provided between the second collar (400) and the spindle (500). A first dynamic sealing assembly and a second dynamic sealing assembly are provided between the second collar (400) and the first collar (100).

2. The sealing roller according to claim 1, characterized in that: The first static sealing assembly includes a rubber ring (600), which is fitted onto the first annular groove on the outer circumference of the first collar (100) and abuts against the inner wall of the bearing seat (200).

3. The sealing roller according to claim 2, characterized in that: The second static sealing assembly includes a first annular wool felt pad (700), which is fitted onto the second annular groove on the outer circumference of the first collar (100) and abuts against the inner wall of the bearing seat (200). The first annular wool felt pad (700) is located on the side of the rubber ring (600) away from the bearing (300).

4. The sealing roller according to any one of claims 1 to 3, characterized in that: One end of the first collar (100) is in contact with one end of the outer ring of the bearing (300), and a first elastic snap ring (210) is installed on the bearing seat (200). The first elastic snap ring (210) is in contact with the end of the first collar (100) away from the bearing (300).

5. The sealing roller according to claim 1, characterized in that: The third static sealing assembly includes an annular rubber pad (900), a step is provided on the mandrel (500), the annular rubber pad (900) is sleeved on the step, and one end of the second collar (400) abuts against the annular rubber pad (900).

6. The sealing roller according to claim 1, characterized in that: The first dynamic sealing assembly includes a rubber ring (1000), which is sleeved on the third annular groove on the outer circumferential wall of the second sleeve ring (400). The rubber ring (1000) is located at one end of the second sleeve ring (400) near the bearing (300). Multiple annular protrusions (1010) are integrally formed and axially spaced on the outer wall of the rubber ring (1000), and the annular protrusions (1010) abut against the inner wall of the first sleeve ring (100).

7. The sealing roller according to claim 1, characterized in that: The second dynamic seal assembly is located at the end of the second collar (400) away from the bearing (300); the second dynamic seal assembly includes a second annular wool felt pad (1100), a third annular wool felt pad (1200) and a PTFE membrane (800), the second annular wool felt pad (1100), the third annular wool felt pad (1200) and the PTFE membrane (800) are all sleeved on the fourth annular groove on the outer circumference of the second collar (400), and the PTFE membrane (800) is sandwiched between the second annular wool felt pad (1100) and the third annular wool felt pad (1200).

8. The sealing roller according to claim 1, characterized in that: The mandrel (500) is provided with a threaded section (510), which is threadedly connected to the second collar (400). A second elastic retaining ring (520) is installed on the mandrel (500), and the second elastic retaining ring (520) contacts the end of the second collar (400) away from the bearing (300).

9. The sealing roller according to claim 8, characterized in that: The second ring (400) has multiple blind holes (410) at the end away from the bearing (300) for engaging with the caliper.

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