A continuous rolling stand bearing waterproof device

Abstract

A waterproof device for a continuous rolling mill stand bearing includes a continuous rolling roll, a spacer ring, a first O-ring seal, a water-retaining ring, a second O-ring seal, and a bearing housing. O-ring seals are installed at the mounting positions of the spacer ring and the water-retaining ring: the first O-ring seal is mounted on the spacer ring, and the second O-ring seal is mounted on the water-retaining ring. The spacer ring is mounted on the continuous rolling roll, and the water-retaining ring is mounted on the bearing housing. The clearance between the spacer ring and the water-retaining ring is 0.8–1.2 mm. The continuous rolling roll is installed in the bearing housing. The sealing between the spacer ring and the water-retaining ring employs a three-layer waterproof structure. Two layers of rectangular teeth are designed on the mating surfaces of the spacer ring and the water-retaining ring for meshing. Two to three grooves are designed in the middle of the first layer of rectangular teeth on the spacer ring, and a boss is designed at the end. Two to three grooves are designed in the middle of the second layer of rectangular teeth on the spacer ring. This design prevents external iron oxide scale and cooling water from entering the bearing, thereby extending the bearing's service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel rolling equipment and is a device for waterproofing the bearings of continuous rolling mill stands using a multi-layer waterproof structure. Background Technology

[0002] In the production of seamless steel pipes, during the operation of the continuous rolling mill, due to vibration and the high-speed rotation of the rolling rolls, the skeleton oil seal and mechanical seal cannot effectively prevent iron oxide scale and external cooling water from seeping into the bearing of the continuous rolling mill stand along the gaps around the rolling rolls. This leads to water ingress into the bearing, causing bearing corrosion, poor lubrication, and damage.

[0003] The effects of water ingress on the bearings of a continuous rolling mill stand include poor lubrication, corrosion, excessive wear, reduced bearing life, and even online seizure. Utility Model Content

[0004] The purpose of this utility model is to provide a waterproof device for the bearings of a continuous rolling mill stand. This sealing device can prevent water from entering the bearings of the continuous rolling mill stand. It adopts triple shielding, water-throwing treatment, and waterproof boss to prevent defects such as poor bearing lubrication, corrosion, and bearing seizure caused by water entering the bearing.

[0005] The technical solution of this utility model:

[0006] A waterproofing device for a continuous rolling mill stand bearing includes a continuous rolling roll, a spacer ring, a first O-ring seal, a water-retaining ring, a second O-ring seal, and a bearing housing. O-ring seals are installed at the spacer ring and water-retaining ring mounting positions: the first O-ring seal is installed on the spacer ring, and the second O-ring seal is installed on the water-retaining ring; the spacer ring is installed on the continuous rolling roll, and the water-retaining ring is installed on the bearing housing, with a clearance of 0.8–1.2 mm between the spacer ring and the water-retaining ring; the continuous rolling roll is then installed into the bearing housing.

[0007] Furthermore, two layers of rectangular teeth, 7-9 mm long and 4-6 mm high, are provided on the mating surfaces of the spacer ring and the water-blocking ring to enable them to mesh and engage.

[0008] Furthermore, 2 to 3 grooves with a diameter of 2 to 4 mm are provided in the middle of the first layer of rectangular teeth of the spacer ring, and a boss with a height of 2 to 4 mm is provided at the end.

[0009] Furthermore, two to three grooves with a diameter of 1 to 3 mm are provided in the middle of the second layer of rectangular teeth of the spacer ring.

[0010] The innovative points and beneficial effects of this utility model are as follows: It adopts three-layer waterproofing, groove water-throwing treatment, and boss waterproofing. After the continuous rolling mill bearing seat is removed from the line, it is fully lubricated and there are no water stains. The oil film of the bearing rolling elements is intact. The vibration and roll rotation during the operation of the continuous rolling mill do not affect the multi-layer waterproofing effect. It can prevent water from entering the bearing of the continuous rolling mill stand and prevent defects such as poor bearing lubrication, corrosion, and bearing seizure caused by water entering the bearing. Attached Figure Description

[0011] Figure 1 This is a sectional view of a continuous rolling mill stand.

[0012] Figure 2 This is a partial enlarged view of the waterproofing device on the continuous rolling mill stand.

[0013] Figure 3 This is the front view of the fixed-distance ring.

[0014] Figure 4 This is the front view of the water-retaining ring.

[0015] Figure 5 This is a magnified view of a fixed-distance loop.

[0016] Figure 6 This is a magnified view of a portion of the water-retaining ring.

[0017] In the figure: 1-continuous rolling roll; 2-spacing ring; 3-first O-ring seal; 4-water baffle ring; 5-second O-ring seal; 6-bearing seat; 5.1-rectangular tooth; 5.2-groove; 5.3-bore; 6.1-water baffle. Detailed Implementation

[0018] The following description, in conjunction with the accompanying drawings, illustrates the embodiments.

[0019] Figures 1-4The diagram shows a waterproof device for a continuous rolling mill stand bearing, comprising a continuous rolling roll 1, a spacer ring 2, a first O-ring seal 3, a water-blocking ring 4, a second O-ring seal 5, and a bearing seat 6. The first O-ring seal 3 is mounted on the spacer ring 2, and the second O-ring seal 5 is mounted on the water-blocking ring 4. The spacer ring 2 is then mounted on the continuous rolling roll 1, and the water-blocking ring 4 is mounted on the bearing seat 6. Finally, the continuous rolling roll 1 is installed into the bearing seat 6. The sealing between the spacer ring 2 and the water-blocking ring 4 employs a three-layer waterproof structure: firstly, the water-blocking platform 6.1 of the water-blocking ring 4 blocks external cooling water and iron oxide scale; secondly, two layers of 8mm long and 5mm high rectangular teeth 5.1 are designed on the mating surface of the spacer ring 2 to ensure meshing. Two to three 3mm diameter grooves 5.2 are designed in the middle of the first layer of rectangular teeth of the spacer ring 2, and a 3mm high boss 5.3 is designed at the end to further prevent external cooling water from entering the continuous rolling mill bearing. Finally, two to three 2mm diameter grooves 5.2 are designed in the middle of the second layer of rectangular teeth of the spacer ring 2 to prevent external cooling water from entering the continuous rolling mill bearing. O-rings are installed at the installation positions of the spacer ring 2 and the water-blocking ring 4 to ensure that external iron oxide scale and cooling water cannot enter the bearing, thereby extending the bearing's service life.

[0020] Figure 5 , Figure 6 As shown: The second and third waterproof layers of the spacer ring 2 employ a groove 5.2 design. During operation and rotation, groove 5.2 promptly ejects small amounts of external cooling water, preventing it from entering the continuous rolling mill stand bearings. The first waterproof layer is the water-blocking platform 6.1 of the water-blocking ring. The second waterproof layer is a groove 5.2 with a boss 5.3. The third waterproof layer is a groove 5.2 design.

Claims

1. A continuous mill stand bearing water protection device, characterized by: The system includes a continuous rolling mill roll, a spacer ring, a first O-ring seal, a water-retaining ring, a second O-ring seal, and a bearing housing. O-ring seals are installed at the spacer ring and water-retaining ring mounting positions: the first O-ring seal is installed on the spacer ring, and the second O-ring seal is installed on the water-retaining ring. The spacer ring is installed on the continuous rolling mill roll, and the water-retaining ring is installed on the bearing housing. The clearance between the spacer ring and the water-retaining ring is 0.8–1.2 mm. The continuous rolling mill roll is then installed into the bearing housing.

2. The water-proof device for a continuous rolling stand bearing according to claim 1, characterized in that: Two layers of rectangular teeth, 7-9 mm long and 4-6 mm high, are provided on the mating surfaces of the spacer ring and the water-blocking ring to enable them to mesh and engage.

3. The waterproof device for a continuous rolling mill stand bearing according to claim 1, characterized in that: Two to three grooves with a diameter of 2 to 4 mm are provided in the middle of the first layer of rectangular teeth of the spacer ring, and a boss with a height of 2 to 4 mm is provided at the end.

4. The waterproof device for a continuous rolling mill stand bearing according to claim 1, characterized in that: Two to three grooves with a diameter of 1 to 3 mm are provided in the middle of the second layer of rectangular teeth of the spacer ring.

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