Pinch roll water retaining device of finish rolling descaling box

Abstract

The utility model discloses a water retaining device for a pinch roll of a finish rolling descaling box, which relates to the technical field of steel rolling equipment and comprises a pinch roll body, two ends of the pinch roll body are provided with inclined planes, the inclined planes at the two ends of the pinch roll body are fixedly provided with L-shaped bolts, and the inclined planes at the two ends of the pinch roll body are sleeved with water retaining rings. The water retaining ring is connected with the L-shaped bolt, and three inserting holes are formed in the water retaining ring at equal intervals. According to the pinch roll, the water retaining ring is arranged on the pinch roll, and the water guide rod is arranged on the water retaining ring, so that water on the water retaining ring can be quickly thrown out along the water guide rod when the pinch roll body rotates, the water is prevented from flowing to the bearing seat, the bearing seat is prevented from being damaged to a great extent, the service life is greatly prolonged, and the cost of equipment spare parts is saved; the pinch roll water retaining device effectively avoids equipment shutdown faults caused by damage of a descaling box pinch roll bearing, has certain universality due to structural improvement, and has further popularization value.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling equipment technology, and in particular to a water-blocking device for the pinch rolls of a finishing mill descaling box. Background Technology

[0002] The following problems have been found after the current hot rolling mill finishing descaling box pinch rolls were put into use:

[0003] 1. High-pressure descaling water jets entering the bearing housing cause water and metal scale to enter, severely reducing bearing life. Damaged bearings exhibit rough rolling element surfaces covered with a mixture of lubricating oil, metal scale, and water. The rolling elements show irregular circumferential wear, severe wear between the rolling elements and cage, large clearances, and the rolling elements losing their positioning, eventually flipping and jamming. This phenomenon is caused by high-pressure water and metal scale erosion of the bearing housing, failure of the lip seal leading to excessive water and metal scale ingress, and poor lubrication resulting in excessive wear.

[0004] 2. High-pressure descaling water and iron oxide scale enter the bearing under pressure, causing a mixture of internal lubricating oil, iron oxide scale, and water. This mixture adheres to the surface of the rolling elements and between the inner and outer rings of the bearing, exacerbating wear. Water and iron oxide scale enter through the inner seal of the bearing. The design of the water-retaining ring in this area did not fully consider the operating conditions, resulting in poor water-retaining performance. High-pressure water and iron oxide scale can easily be forced into the inner sealing cavity and into the bearing. Furthermore, the bearing housing is deformed due to prolonged exposure to high-pressure descaling water.

[0005] Therefore, a water-blocking device for the pinch rolls of the finishing mill descaling box is provided. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a water-blocking device for the pinch rolls of a precision mill descaling box. By installing a water-blocking ring on the pinch roll and setting a water-guide rod on the water-blocking ring, water on the water-blocking ring can be quickly thrown out along the water-guide rod when the pinch roll body rotates, preventing water from flowing onto the bearing seat. This greatly avoids damage to the bearing seat, significantly extends its service life, saves equipment spare parts costs, and effectively avoids equipment downtime caused by damage to the descaling box pinch roll bearing. Furthermore, the improved structure of this pinch roll water-blocking device has a certain degree of versatility and is worthy of further promotion, overcoming the shortcomings of existing technologies.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A water-blocking device for a descaling box pinch roll includes a pinch roll body, both ends of which are provided with inclined surfaces. L-shaped bolts are fixedly installed on both inclined surfaces of the pinch roll body, and water-blocking rings are fitted on both inclined surfaces of the pinch roll body, and the water-blocking rings are connected to the L-shaped bolts.

[0009] As a further improvement of this utility model: three insertion holes are equally spaced on the water-blocking ring, and three L-shaped bolts are equally spaced on the inclined surfaces at both ends of the clamping roller body. The horizontal sections of the three L-shaped bolts are respectively inserted into the three insertion holes, and nuts are screwed onto the horizontal sections of the three L-shaped bolts.

[0010] As a further improvement of this utility model: both ends of the pinch roller body are connected to bearing seats, and both bearing seats are fixed on the frame.

[0011] As a further embodiment of this utility model: both ends of the pinch roller body are fitted with connecting rings, and the connecting rings are connected to the ends of the pinch roller body by fixing bolts. Both connecting rings are equipped with abutting rods, and one end of the abutting rod abuts against the water-blocking ring.

[0012] As a further improvement of this utility model: three mounting slots are equally spaced on the side of the connecting ring, and three abutting rods are rotatably installed in the three mounting slots through connecting pins. The water-blocking ring is equally spaced on one side facing the connecting ring, and one end of the three abutting rods is inserted into the three slots.

[0013] As a further improvement of this utility model, water guide rods are fixed at equal intervals on the sides of the two water-blocking rings.

[0014] As a further improvement of this utility model: the plane of the water guide rod and the water baffle ring are set at an angle, and the water guide rod is tilted towards the middle of the pinch roller body.

[0015] The beneficial effects of this utility model are as follows:

[0016] By installing a water-blocking ring on the pinch roller and setting a water guide rod on the water-blocking ring, water on the water-blocking ring can be quickly thrown out along the water guide rod when the pinch roller body rotates, preventing water from flowing onto the bearing seat, thus greatly avoiding damage to the bearing seat, significantly extending its service life, saving equipment spare parts costs, effectively avoiding equipment downtime caused by damage to the descaling box pinch roller bearing, and the improved structure of the pinch roller water-blocking device has a certain degree of versatility and has the value of further promotion. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a water-blocking device for a precision rolling descaling box pinch roll proposed in this utility model.

[0018] Figure 2 This is a partial structural schematic diagram of a water-blocking device for the pinch rolls of a precision rolling descaling box proposed in this utility model.

[0019] Figure 3 This utility model proposes a water-blocking device for the pinch rolls of a finishing mill descaling box. Figure 1Enlarged structural diagram at point A in the middle.

[0020] Figure 4 This utility model proposes a water-blocking device for the pinch rolls of a finishing mill descaling box. Figure 1 Enlarged structural diagram at point B.

[0021] In the diagram: 1. Pinch roller body; 2. Bearing seat; 3. Water baffle ring; 4. Abutment rod; 5. Water guide rod; 6. Insertion hole; 7. Slot; 8. Nut; 9. Connecting ring; 10. Fixing bolt; 11. Mounting groove; 12. L-bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1, referring to Figure 1-4 A water-blocking device for a descaling box pinch roll includes a pinch roll body 1. Both ends of the pinch roll body 1 are provided with inclined surfaces. L-shaped bolts 12 are fixedly provided on both ends of the inclined surfaces of the pinch roll body 1. Water-blocking rings 3 are fitted on both ends of the inclined surfaces of the pinch roll body 1, and the water-blocking rings 3 are connected to the L-shaped bolts 12.

[0024] The water-blocking ring 3 has three insertion holes 6 at equal intervals. Three L-shaped bolts 12 are fixed at equal intervals on the inclined surfaces at both ends of the pinch roller body 1. The horizontal sections of the three L-shaped bolts 12 are respectively inserted into the three insertion holes 6, and the horizontal sections of the three L-shaped bolts 12 are screwed with nuts 8.

[0025] Both ends of the pinch roller body 1 are connected to the bearing seats 2, and both bearing seats 2 are fixed on the frame.

[0026] Both ends of the pinch roller body 1 are fitted with connecting rings 9. The connecting rings 9 are connected to the ends of the pinch roller body 1 by fixing bolts 10. Both connecting rings 9 are equipped with abutting rods 4, and one end of the abutting rods 4 abuts against the water-blocking ring 3.

[0027] The connecting ring 9 has three mounting slots 11 evenly spaced on its side. Three abutting rods 4 are rotatably mounted in the three mounting slots 11 via connecting pins. The water-blocking ring 3 has three slots 7 evenly spaced on one side facing the connecting ring 9. One end of the three abutting rods 4 is inserted into the three slots 7.

[0028] The water-blocking ring 3 is placed on the inclined surface of the pinch roller body 1, and the horizontal section of the L-bolt 12 is inserted into the insertion hole 6 of the water-blocking ring 3. The nut 8 is screwed into the horizontal section of the L-bolt 12 to fix the water-blocking ring 3.

[0029] The connecting ring 9 is fitted onto the end of the pinch roller body 1, and the three abutting rods 4 on the connecting ring 9 are inserted into the three slots 7 of the connecting ring 9. The connecting ring 9 is then fixed to the pinch roller body 1 using the fixing bolts 10. The stability of the water-blocking ring 3 is further ensured by the support of the abutting rods 4 on the water-blocking ring 3.

[0030] Example 2 is an optimization based on Example 1, specifically:

[0031] Two water-blocking rings 3 are fixed with water guide rods 5 at equal intervals on their sides. The water guide rods 5 are set at an angle with the plane of the water-blocking rings 3, and the water guide rods 5 are tilted towards the middle of the pinch roller body 1.

[0032] The water guide rod 5 allows water on the water baffle ring 3 to be quickly thrown out along the water guide rod 5 when the pinch roller body 1 rotates, preventing water from flowing onto the bearing seat 2 and minimizing damage to the bearing seat.

[0033] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A water barrier device for a pinch roll of a finishing descaling box, comprising a pinch roll body (1), characterized in that, The both ends of the pinch roll body (1) are provided with bevels, the both ends of the pinch roll body (1) are fixedly provided with L-shaped bolts (12), and the both ends of the pinch roll body (1) are sleeved with water blocking rings (3), and the water blocking rings (3) are connected with the L-shaped bolts (12).

2. The pinch roll water curtain device of a finishing descaling box according to claim 1, characterized in that, Three insertion holes (6) are equidistantly formed in the water blocking ring (3), three L-shaped bolts (12) are equidistantly fixed on the bevels of the both ends of the pinch roll body (1), the horizontal sections of the three L-shaped bolts (12) are respectively inserted at the three insertion holes (6), and the horizontal sections of the three L-shaped bolts (12) are screwed with nuts (8).

3. The pinch roll water curtain device of a finishing descaling box according to claim 1, characterized in that, The both ends of the pinch roll body (1) are connected on bearing seats (2), and the two bearing seats (2) are fixed on a rack.

4. The pinch roll water curtain device of a finishing descaling box according to claim 1, characterized in that, The both ends of the pinch roll body (1) are sleeved with connecting rings (9), the connecting rings (9) are connected with the ends of the pinch roll body (1) through fixing bolts (10), abutting rods (4) are installed on the two connecting rings (9), and one end of the abutting rod (4) abuts against the water blocking ring (3).

5. A water deflector device for a finishing mill descaling box pinch roll according to claim 4, characterised in that, Three mounting grooves (11) are equidistantly formed in the side of the connecting ring (9), three abutting rods (4) are rotatably installed at the three mounting grooves (11) through connecting pins, and three insertion grooves (7) are equidistantly formed in the side of the water blocking ring (3) facing the connecting ring (9), and one end of the three abutting rods (4) is inserted at the three insertion grooves (7).

6. The pinch roll water curtain device for finishing descaling box according to claim 1, characterized in that, Water guide rods (5) are equidistantly fixed on the sides of the two water blocking rings (3).

7. A water deflector device for a finishing mill descaling box pinch roll according to claim 6, characterised in that, The water guide rods (5) and the water blocking rings (3) are provided with an included angle, and the water guide rods (5) are directed to the middle part of the pinch roll body (1).

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