Sealing structure, cooling roller way and continuous rolling mill
By designing the small-diameter end of the rotating shaft end of the rotating water ring on the cooling roller, the large-diameter end is in the direction away from the first shaft seal, and the cooling water is introduced by centrifugal force, the lubrication failure caused by the bearing water inlet is solved and the bearing is improved Lifespan and equipment reliability reduce maintenance costs.
Patent Information
- Application Number
- CN202420599771.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The high speed of the cooling roller leads to water inlet and lubrication failure of bearings, affecting service life, causing equipment failure and shutdown and increased maintenance costs.
A sealing structure is designed, including a first shaft seal and a rotating water ring. The small diameter end of the rotating water ring is installed at the end of the rotating shaft of the cooling roller, and the large diameter end is in the direction away from the first shaft seal, and the cooling water is made by centrifugal force. Quickly introduce it into the bottom of the return water chamber to reduce the water pressure, improve water resistance, and prevent water from invading the bearing.
It effectively reduces the pressure of cooling water on the first shaft seal, improves the service life of the bearing, avoids bearing damage and equipment failure, and reduces maintenance costs.
Smart Images
Figure CN222163267U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of roller table sealing, in particular to a sealing structure, a cooling roller table and a continuous rolling mill. Background Art
[0002] The output roller table refers to the equipment at the outlet of the continuous rolling mill, which is used to cool and shape the hot-rolled coils. The cooling roller table is a common form of output roller table. It cools the hot-rolled coils through a series of rollers and a water spray system, which can effectively control the temperature and shape of the coils and ensure the quality and performance of the products.
[0003] During actual operation, due to the high speed of the cooling roller, water easily enters the bearings on the cooling roller, and lubrication failure causes bearing damage, which reduces the service life of the bearing, causes the cooling roller to get stuck, and causes scratches on the steel plate surface, thus affecting product quality, causing the production line to frequently stop due to accidents, and the cooling roller is frequently taken offline for maintenance, resulting in increased equipment downtime and maintenance costs. Utility Model Content
[0004] In order to solve the above problems at least to a certain extent, in the first aspect, the utility model provides a sealing structure, including a first shaft seal and a water swirl ring, the first shaft seal is connected to the rotating shaft of the cooling roller, the two ends of the water swirl ring are respectively set as a small-diameter end and a large-diameter end, the small-diameter end is used to be mounted on the end of the rotating shaft of the cooling roller, and the large-diameter end is set in the direction away from the first shaft seal.
[0005] Optionally, the water spinning ring is configured as a truncated cone-shaped ring structure.
[0006] Optionally, the water vortex ring is configured as a prism-shaped ring structure.
[0007] Optionally, a second shaft seal is further included, wherein the second shaft seal is connected to the rotating shaft of the cooling roller, and the second shaft seal is located between the first shaft seal and the water vortex ring.
[0008] Optionally, it also includes a steel sleeve, which is sleeved on the journal portion of the rotating shaft of the cooling roller.
[0009] Optionally, the first shaft seal and the second shaft seal are used to be sleeved on the steel sleeve.
[0010] Optionally, the steel sleeve is configured as an alloy steel pipe.
[0011] Optionally, it includes an oil nozzle, which is used to be connected to the bearing seat. The first shaft seal and / or the second shaft seal is provided with an oil inlet channel, one end of the oil inlet channel is connected to the oil nozzle, and the other end of the oil inlet channel is connected to the matching parts of the first shaft seal, the second shaft seal and the steel sleeve.
[0012] Another embodiment of the utility model provides a cooling roller conveyor, and the cooling roller conveyor includes the above sealing structure.
[0013] Another embodiment of the utility model provides a continuous rolling mill, which includes the above sealing structure or the above cooling roller.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] By sleeved the small-diameter end of the water swirl ring on the end of the rotating shaft of the cooling roller, the large-diameter end of the water swirl ring is arranged in a direction away from the first shaft seal, that is, the large-diameter end extends in a direction away from the center of the rotating shaft of the cooling roller. In this way, when the water swirl ring rotates at a high speed with the cooling roller, the cooling water in the roller flows out from the end of the cooling roller and enters the water swirl ring, and can rotate and flow along the inner wall of the water swirl ring under the action of centrifugal force, and finally thrown out from the large-diameter end, so that the cooling water of the cooling roller is quickly introduced into the return pipe at the bottom of the return chamber, so that the cooling water flows in a direction away from the first shaft seal as much as possible, thereby reducing the pressure of the cooling water on the first shaft seal, greatly reducing the water pressure at the first shaft seal, improving the waterproof ability of the first shaft seal, and thus avoiding the cooling water from invading the interior of the bearing, thereby improving the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic structural diagram of the sealing structure of an embodiment of the utility model;
[0017] Figure 2 It is a side view of the sealing structure of an embodiment of the utility model.
[0018] Description of reference numerals:
[0019] 1. Steel sleeve; 2. First shaft seal; 3. Second shaft seal; 4. Swirl ring; 41. Small-diameter end; 42. Large-diameter end; 5. Oil nozzle; 100. Cooling roller; 110. Rotating shaft; 120. Return water chamber; 130. Return water pipe; 140. Inlet water pipe; 200. Bearing seat. DETAILED DESCRIPTION
[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0022] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.
[0023] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0024] like Figure 1 As shown, an embodiment of the utility model provides a sealing structure, including a first shaft seal 2 and a water swirl ring 4, the first shaft seal 2 is connected to the rotating shaft 110 of the cooling roller 100, and the two ends of the water swirl ring 4 are respectively set as a small-diameter end 41 and a large-diameter end 42, the small-diameter end 41 is used to be mounted on the end of the rotating shaft 110 of the cooling roller 100, and the large-diameter end 42 is set in a direction away from the first shaft seal 2.
[0025] It should be noted that the bearing seat 200 is usually arranged on the rotating shaft 110 of the cooling roller 100. The bearing seat 200 is closely related to the first shaft seal 2. The bearing seat 200 is a component used to support the rotating shaft 110, which enables the rotating shaft 110 to rotate smoothly, and the first shaft seal 2 is used to prevent the leakage of grease or lubricating oil, and also prevent dust and impurities from entering the bearing seat 200, so as to protect the bearing. Therefore, on the cooling roller 100, the bearing and the first shaft seal 2 are usually used in combination to ensure that the bearing can be well lubricated and protected, so as to ensure the normal operation of the equipment;
[0026] A cooling water system is usually provided on the cooling roller 100, and the cooling water system includes a return water chamber 120, a return water pipe 130 and a water inlet pipe 140. The interior of the rotating shaft 110 is a hollow structure. The water inlet pipe 140 is used to introduce cooling water from the interior of the rotating shaft 110 into the cooling roller 100 to achieve rapid cooling of the roller. After circulation, the cooling water is discharged from the return water pipe 130 at the bottom of the return water chamber 120, which is beneficial to maintaining a stable operating temperature and cooling effect of the cooling roller 100, and helps to control the temperature and quality of the hot-rolled coil.
[0027] In this embodiment, by sleeve-mounting the small-diameter end 41 of the water swirl ring 4 on the end of the rotating shaft 110 of the cooling roller 100, the large-diameter end 42 of the water swirl ring 4 is arranged in a direction away from the first shaft seal 2, that is, the large-diameter end 42 extends in a direction away from the center of the rotating shaft 110 of the cooling roller 100. In this way, when the water swirl ring 4 rotates at a high speed with the cooling roller 100, the cooling water in the roller flows out from the end of the cooling roller 100 and enters the water swirl ring 4, and can rotate and flow along the inner wall of the water swirl ring 4 under the action of centrifugal force, and finally is thrown out from the large-diameter end 42, so that the cooling water of the cooling roller 100 is quickly introduced into the return pipe 130 at the bottom of the return chamber 120, so that the cooling water flows in a direction away from the first shaft seal 2 as much as possible, thereby reducing the pressure of the cooling water on the first shaft seal 2, greatly reducing the water pressure at the first shaft seal 2, improving the waterproof ability of the first shaft seal 2, and thus preventing the cooling water from invading the interior of the bearing, thereby improving the service life of the bearing.
[0028] like Figure 1 As shown, optionally, the water vortex ring 4 is configured as a truncated cone-shaped ring structure.
[0029] In this embodiment, the truncated cone-shaped ring structure of the water spinning ring 4 can be formed by buckling the upper and lower halves together. Thus, the upper and lower halves are buckled together to form the water spinning ring 4 fixed on the end of the rotating shaft 110 of the cooling roller 100 .
[0030] In another embodiment, the water swirling ring 4 can also be set as a prism-shaped ring structure. The water swirling ring 4 with a prism-shaped ring structure can also be formed by buckling together two upper and lower half structures, which is the same as the setting method of the water swirling ring 4 with the above-mentioned truncated cone ring structure. It should be noted that the inner circle of the small-diameter end 41 of the water swirling ring 4 with a prism-shaped ring structure is surrounded by a circular hole, so that the small-diameter end 41 can be connected to the outer circumferential surface of the end of the rotating shaft 110 of the cooling roller 100 through the circular hole.
[0031] like Figure 1 As shown, optionally, the sealing structure further includes a second shaft seal 3 , which is connected to the rotating shaft 110 of the cooling roller 100 , and is located between the first shaft seal 2 and the water vortex ring 4 .
[0032] In this embodiment, the second shaft seal 3 is located between the first shaft seal 2 and the water swirling ring 4, that is, the second shaft seal 3 is closer to the water swirling ring 4 than the first shaft seal 2. In other words, the second shaft seal 3 is located close to the return water chamber 120, and the first shaft seal 2 is located far away from the return water chamber 120. By adding the second shaft seal 3 on the basis of the first shaft seal 2, water can be prevented from entering the sealing chamber of the bearing on the rotating shaft 110, thereby increasing the service life of the bearing and ensuring normal production of the production line.
[0033] like Figure 1 and Figure 2 As shown, optionally, the sealing structure further includes a steel sleeve 1 , which is sleeved on the journal portion of the rotating shaft 110 of the cooling roller 100 .
[0034] In this embodiment, the steel sleeve 1 is sleeved on the journal portion of the rotating shaft 110 of the cooling roller 100 , thereby protecting the journal portion of the rotating shaft 110 of the cooling roller 100 and improving the service life of the cooling roller 100 .
[0035] like Figure 1 and Figure 2 As shown, optionally, the first shaft seal 2 and the second shaft seal 3 are used to be sleeved on the steel sleeve 1.
[0036] In the present embodiment, by mounting the first shaft seal 2 and the second shaft seal 3 on the steel sleeve 1, it is possible to avoid the first shaft seal 2 and the second shaft seal 3 being directly mounted on the rotating shaft 110 of the cooling roller 100. In other words, the first shaft seal 2 and the second shaft seal 3 do not contact the rotating shaft 110 of the cooling roller 100, thereby avoiding the first shaft seal 2 and the second shaft seal 3 from wearing the shaft neck part of the rotating shaft 110 of the cooling roller 100.
[0037] like Figure 1 As shown, optionally, the steel sleeve 1 is set to be an alloy steel pipe.
[0038] In this embodiment, the steel sleeve 1 is set to be an alloy steel pipe, for example, it can be a steel sleeve 1 made of 40CrMo, and the steel sleeve 1 is tempered and hardened to avoid the problem of wear of the shaft neck part of the rotating shaft 110 of the cooling roller 100 causing failure of the first shaft seal 2 and the second shaft seal 3, and also reduce the repair cost of the cooling roller 100 after it is offline.
[0039] like Figure 1 and Figure 2 As shown, optionally, the sealing structure also includes an oil nozzle 5, which is used to be connected to the bearing. The first shaft seal 2 and / or the second shaft seal 3 is provided with an oil inlet channel, one end of the oil inlet channel is connected to the oil nozzle 5, and the other end of the oil inlet channel is connected to the matching parts of the first shaft seal 2, the second shaft seal 3 and the steel sleeve 1.
[0040] Specifically, when manufacturing the bearing, a threaded hole for threaded connection of the oil supply nozzle 5 can be provided on the bearing, and the oil inlet channel is integrally formed inside the first shaft seal 2 and the second shaft seal 3. The matching parts of the first shaft seal 2, the second shaft seal 3 and the steel sleeve 1 refer to the matching parts of the steel sleeve 1 and the lips of the first shaft seal 2 and the lips of the second shaft seal 3.
[0041] In this embodiment, by regularly replenishing lubricating oil into the oil nozzle 5, the lubricating oil enters the matching parts between the steel sleeve 1 and the lip of the first shaft seal 2 and the lip of the second shaft seal 3 through the oil inlet channel, thereby further reducing the wear of the steel sleeve 1 and extending the service life of the first shaft seal 2 and the second shaft seal 3.
[0042] Another embodiment of the present invention provides a cooling roller conveyor. The cooling roller conveyor includes the above sealing structure. Due to the above sealing structure, the cooling roller conveyor has the same advantages as above.
[0043] Another embodiment of the utility model provides a continuous rolling mill, which includes the above sealing structure or the above cooling roller. Since the continuous rolling mill has the above sealing structure or the above cooling roller, it has the same advantages as above.
[0044] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.
Claims
1. A sealing structure, characterized in that: The invention comprises a first shaft seal (2) and a water swirl ring (4), wherein the first shaft seal (2) is connected to a rotating shaft (110) of a cooling roller (100), and the two ends of the water swirl ring (4) are respectively arranged as a small-diameter end (41) and a large-diameter end (42), wherein the small-diameter end (41) is used for being fitted onto the end of the rotating shaft (110) of the cooling roller (100), and the large-diameter end (42) is arranged in a direction away from the first shaft seal (2).
2. The sealing structure according to claim 1, characterized in that: The water vortex ring (4) is configured as a truncated cone-shaped ring structure.
3. The sealing structure according to claim 1, characterized in that: The water vortex ring (4) is configured as a prism-shaped ring structure.
4. The sealing structure according to claim 2, characterized in that: It also includes a second shaft seal (3), which is connected to the rotating shaft (110) of the cooling roller (100), and the second shaft seal (3) is located between the first shaft seal (2) and the water vortex ring (4).
5. The sealing structure according to claim 4, characterized in that: It also comprises a steel sleeve (1), wherein the steel sleeve (1) is sleeved on the journal portion of the rotating shaft (110) of the cooling roller (100).
6. The sealing structure according to claim 5, characterized in that: The first shaft seal (2) and the second shaft seal (3) are used to be sleeved on the steel sleeve (1).
7. The sealing structure according to claim 6, characterized in that: The steel sleeve (1) is an alloy steel pipe.
8. The sealing structure according to claim 6, characterized in that: It also includes an oil supply nozzle (5), which is used to be connected to the bearing seat (200). The first shaft seal (2) and / or the second shaft seal (3) are provided with an oil inlet channel, one end of the oil inlet channel is connected to the oil supply nozzle (5), and the other end of the oil inlet channel is connected to the matching parts of the first shaft seal (2), the second shaft seal (3) and the steel sleeve (1).
9. A cooling roller, characterized in that: Comprising a sealing structure as described in any one of claims 1-8.
10. A continuous rolling mill, characterized in that: It comprises the sealing structure as described in any one of claims 1 to 8 or the cooling roller as described in claim 9.