Rotary joint special for self-lubricating roller of continuous casting machine

Abstract

The utility model relates to the field of rotary joints, in particular to a rotary joint special for roller self-lubrication of a continuous casting machine, which comprises an elbow joint, a rotary column and a graphite lantern ring, a clamping part is fixedly arranged at one end of the elbow joint, the rotary column is inserted in the clamping part, the graphite lantern ring is positioned between the clamping part and the rotary column, and the inner edge of the graphite lantern ring is sleeved on the outer edge of the rotary column. The graphite lantern ring is clamped on the inner edge of the clamping part, the elbow joint and the rotary column are both of a hollow structure, a water flowing channel is formed in the clamping part, one end of the water flowing channel is communicated with the middle of the elbow joint, the other end of the water flowing channel is communicated with the middle of the rotary column, and one side of the graphite lantern ring makes contact with the water flowing channel. According to the rotary joint special for self-lubricating of the continuous casting machine roller, through a water cooling mode, the rotary joint can be used under the high-temperature working condition, the graphite lantern ring can lubricate the rotary joint, the phenomenon of water inflow or jamming is avoided, and the functionality and the external influence resistance of the rotary joint are improved.

Description

Technical Field

[0001] The utility model relates to the field of rotary joints, in particular to a rotary joint dedicated for self-lubricating rollers of a continuous casting machine. Background Art

[0002] Large round billet continuous casting machines generally produce high-end wind power steel and bearing steel. The casting has high requirements for the on-site environment. The cooling method of the fixed section roller cannot adopt the open-circuit water mode of ordinary building material small square billets. Generally, a rotary joint is used to connect the closed-circuit cooling water. The use effect of the rotary joint directly determines the quality of the casting product and the frequency of maintenance and replacement. The existing traditional bearing-type rotary joints are affected by factors such as high ambient temperature and harsh operating conditions, causing damage during long-term use, making the rotary joints prone to water ingress or iron hydroxide jamming. Therefore, it is necessary to improve the self-lubricating special rotary joints for continuous casting machine rollers, so that the rotary joints can avoid water ingress or jamming in the above-mentioned harsh environment, improve their functionality and ability to resist external influences, so as to meet the use requirements of large round billet continuous casting machines under high temperature conditions. Utility Model Content

[0003] The utility model aims to provide a special self-lubricating rotary joint for continuous casting machine rollers.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A special rotary joint for self-lubricating rollers of a continuous casting machine is provided, comprising an elbow joint, a rotating column and a graphite sleeve. A clamping portion is fixedly arranged at one end of the elbow joint, the rotating column is inserted in the clamping portion, the graphite sleeve is located between the clamping portion and the rotating column, and the inner edge of the graphite sleeve is sleeved on the outer edge of the rotating column, the graphite sleeve is clamped on the inner edge of the clamping portion, the elbow joint and the rotating column are both hollow structures, a water flow channel is arranged in the clamping portion, one end of the water flow channel is connected to the middle part of the elbow joint, the other end of the water flow channel is connected to the middle part of the rotating column, and one side of the graphite sleeve is in contact with the water flow channel.

[0006] Furthermore, the clamping part includes an outer shell and an inner shell, the inner shell is located inside the outer shell, the outer edge of the end of the inner shell is fixedly connected to the inner edge of the outer shell, the graphite ring is clamped on the inner edge of the inner shell, the inner edge of the outer shell is connected to the elbow joint, and a water permeable hole is opened on the inner shell.

[0007] Furthermore, the outer edge of the outer shell is provided with a plurality of water inlets and a plurality of water return ports, both of which are connected to the interior of the outer shell, and the water jacket is arranged between the plurality of water inlets and the plurality of water return ports.

[0008] Furthermore, the gap area between the outer shell, the inner shell, the water inlet, the water return port and the water jacket forms the water flow channel.

[0009] Furthermore, an annular notch is provided on the inner edge of the inner shell, one end of the graphite ring abuts against the hole wall of the annular notch, an annular step is fixedly provided on the outer edge of the rotating column, and the other end of the graphite ring abuts against the annular step.

[0010] Furthermore, the cover plate is fixedly installed on the end of the clamping part, the middle part of the cover plate is rotatably connected to the rotating column, and an annular baffle is fixedly arranged on the outer edge of the rotating column, one side of the annular baffle abuts against the cover plate, and the other side of the annular baffle abuts against the clamping part.

[0011] The beneficial effects of the utility model are as follows: the self-lubricating special rotary joint for the continuous casting machine roller can be used under high temperature conditions by means of water cooling, and the graphite sleeve can lubricate the rotating connection to avoid water ingress or jamming, thereby improving its functionality and ability to resist external influences. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment of the utility model.

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 for Figure 2 A local enlarged view of point A;

[0016] In the figure: 1, elbow joint; 1a, clamping part; 1a1, outer shell; 1a2, inner shell; 1a3, water inlet; 1a4, water return; 1a5, water jacket; 1b, water flow channel; 2, rotating column; 2a, annular step; 2b, annular baffle; 3, graphite sleeve ring; 4, cover plate. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0018] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0019] Reference Figures 1 to 3The self-lubricating rotary joint for continuous casting machine roller shown in the figure comprises an elbow joint 1, a rotating column 2 and a graphite sleeve 3. A clamping portion 1a is fixedly provided at one end of the elbow joint 1. The rotating column 2 is inserted in the clamping portion 1a. The graphite sleeve 3 is located between the clamping portion 1a and the rotating column 2. The inner edge of the graphite sleeve 3 is sleeved on the outer edge of the rotating column 2. The graphite sleeve 3 is clamped on the inner edge of the clamping portion 1a. The elbow joint 1 and the rotating column 2 are both hollow structures. A water channel 1b is provided in the clamping portion 1a. One end of the water channel 1b is connected to the middle of the elbow joint 1, and the other end of the water channel 1b is connected to the middle of the rotating column 2. One side of the graphite sleeve 3 is in contact with the water channel 1b. By passing cooling water along the elbow joint 1, the cooling water will enter the rotating column 2 along the water channel 1b. In the process of cooling water flowing, the cooling water will contact the graphite sleeve 3, so that the cooling water can cool down the elbow joint 1 and the rotating column 2, and can also cool down the graphite sleeve 3. And the graphite sleeve 3 can self-lubricate between the elbow joint 1 and the rotating column 2 to prevent impurities from blocking the clamping portion 1a and the rotating column 2. Figure 2 The arrows shown are the direction of water flow.

[0020] The clamping part 1a includes an outer shell 1a1 and an inner shell 1a2, the inner shell 1a2 is located inside the outer shell 1a1, the outer edge of the end of the inner shell 1a2 is fixedly connected to the inner edge of the outer shell 1a1, the graphite ring 3 is clamped on the inner edge of the inner shell 1a2, the inner edge of the outer shell 1a1 is connected to the elbow joint 1, and a water hole is opened on the inner shell 1a2. Through the above structure, after the cooling water enters the water flow channel 1b along the elbow joint 1, it will enter the inner shell 1a2 along the water hole, and finally flow along the hollow area of ​​the rotating column 2 to cool other structures, and the cooling water does not need to be refluxed. The clamping part 1a is set as a two-layer structure, so that the cooling water can flow in the clamping part 1a for a long time, increase the contact time of the cooling water, and thus have a better cooling effect on the clamping part 1a.

[0021] The outer edge of the outer shell 1a1 is provided with a plurality of water inlets 1a3 and a plurality of water return ports 1a4, and the water inlets 1a3 and the water return ports 1a4 are both connected to the interior of the outer shell 1a1, and the water jacket 1a5 is sleeved between the plurality of water inlets 1a3 and the plurality of water return ports 1a4. When there is blockage of impurities between the outer shell 1a1 and the inner shell 1a2, the water flow is divided by the diversion effect of the water inlets 1a3 and the water return ports 1a4, so as to avoid the water flow squeezing the impurities into the interior of the inner shell 1a2, that is, to avoid the phenomenon of blockage. And the impurities can be discharged into the water jacket 1a5 along the water inlets 1a3 and the water return ports 1a4, so as to further avoid the blockage.

[0022] The gap area between the outer shell 1a1, the inner shell 1a2, the water inlet 1a3, the water return port 1a4 and the water jacket 1a5 forms the water flow channel 1b.

[0023] An annular notch is provided on the inner edge of the inner shell 1a2, one end of the graphite ring 3 abuts against the hole wall of the annular notch, an annular step 2a is fixedly provided on the outer edge of the rotating column 2, and the other end of the graphite ring 3 abuts against the annular step 2a. The graphite ring 3 is clamped by the annular step 2a and the inner shell 1a2, so that the graphite ring 3 can be installed between the inner shell 1a2 and the annular step 2a.

[0024] The cover plate 4 is fixedly mounted on the end of the clamping portion 1a, the middle of the cover plate 4 is rotatably connected to the rotating column 2, and an annular baffle 2b is fixedly arranged on the outer edge of the rotating column 2, one side of the annular baffle 2b contacts the cover plate 4, and the other side of the annular baffle 2b contacts the clamping portion 1a. The rotating column 2 is limited by the cover plate 4 and the clamping portion 1a, so that the rotating column 2 can only rotate in the middle of the clamping portion 1a.

[0025] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. The special rotary joint for self-lubricating roller of continuous casting machine is characterized by: The invention comprises an elbow joint (1), a rotating column (2) and a graphite sleeve (3); a clamping portion (1a) is fixedly provided at one end of the elbow joint (1); the rotating column (2) is inserted into the clamping portion (1a); the graphite sleeve (3) is located between the clamping portion (1a) and the rotating column (2); the inner edge of the graphite sleeve (3) is sleeved on the outer edge of the rotating column (2); the graphite sleeve (3) is clamped on the inner edge of the clamping portion (1a); the elbow joint (1) and the rotating column (2) are both hollow structures; a water flow channel (1b) is provided in the clamping portion (1a); one end of the water flow channel (1b) is connected to the middle of the elbow joint (1); the other end of the water flow channel (1b) is connected to the middle of the rotating column (2); and one side of the graphite sleeve (3) is in contact with the water flow channel (1b).

2. The continuous casting machine roller self-lubricating special rotary joint according to claim 1, characterized in that: The clamping portion (1a) comprises an outer shell (1a1) and an inner shell (1a2); the inner shell (1a2) is located inside the outer shell (1a1); the outer edge of the end of the inner shell (1a2) is fixedly connected to the inner edge of the outer shell (1a1); the graphite ring (3) is clamped on the inner edge of the inner shell (1a2); the inner edge of the outer shell (1a1) is connected to the elbow joint (1); and a water permeable hole is provided on the inner shell (1a2).

3. The continuous casting machine roller self-lubricating special rotary joint according to claim 2, characterized in that: The outer edge of the outer shell (1a1) is provided with a plurality of water inlets (1a3) and a plurality of water return ports (1a4); the water inlets (1a3) and the water return ports (1a4) are both connected to the interior of the outer shell (1a1); and the water jacket (1a5) is sleeved between the plurality of water inlets (1a3) and the plurality of water return ports (1a4).

4. The continuous casting machine roller self-lubricating special rotary joint according to claim 3, characterized in that: The gap area between the outer shell (1a1), the inner shell (1a2), the water inlet (1a3), the water return port (1a4) and the water jacket (1a5) forms the water flow channel (1b).

5. The continuous casting machine roller self-lubricating special rotary joint according to claim 3, characterized in that: An annular notch is provided on the inner edge of the inner shell (1a2), one end of the graphite ring (3) abuts against the hole wall of the annular notch, an annular step (2a) is fixedly provided on the outer edge of the rotating column (2), and the other end of the graphite ring (3) abuts against the annular step (2a).

6. The continuous casting machine roller self-lubricating special rotary joint according to claim 5, characterized in that: The cover plate (4) is fixedly mounted on the end of the clamping portion (1a); the middle portion of the cover plate (4) is rotatably connected to the rotating column (2); an annular baffle plate (2b) is fixedly arranged on the outer edge of the rotating column (2); one side of the annular baffle plate (2b) contacts the cover plate (4); and the other side of the annular baffle plate (2b) contacts the clamping portion (1a).

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