Bearing seat oil filling hole bolt with pressure reduction function
By designing a bearing housing oil filling hole bolt with pressure-reducing function, the problem of surface scratches and strip breakage caused by oil leakage from the bearing housing was solved, achieving effective sealing of the lubricating oil and reducing the incidence of production accidents.
Patent Information
- Application Number
- CN202520031742.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-07
AI Technical Summary
In the metallurgical industry, oil leakage from bearing housings can cause scratches or breakage on the surface of the strip steel. Conventional treatment methods cannot effectively prevent lubricating oil from flowing back into the furnace, affecting production safety and strip steel quality.
Design a bearing housing oil filling hole bolt with pressure reduction function, including bolt cap, bolt rod, fixed pressure plate, movable pressure plate, spring and vent hole. The pressure is controlled by adjusting the screw to ensure that the oil chamber pressure of the bearing housing is lower than the furnace pressure, thus preventing the backflow of lubricating oil.
It effectively prevents bearing housing lubricating oil from flowing back into the furnace, reduces the accident rate, ensures production stability, and avoids strip steel surface quality problems.
Smart Images
Figure CN223754730U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a bearing seat oil hole bolt with pressure reduction function belongs to metallurgical industry production equipment technical field. BACKGROUND
[0002] In the metallurgical industry, bearing seat is the most important auxiliary rotating equipment in the strip production process, bearing seat and heating furnace shell adopt bolt connection, as shown in the figure. Figure 5 Bearing seat is mainly used for supporting rotation of furnace roller, therefore, lubrication of bearing seat directly influences production rhythm and also influences strip surface quality. Once bearing seat is short of oil and seized, light strip surface scratch occurs, heavy strip breaks and production line stops. As known above, stability of bearing seat cannot be ignored.
[0003] In order to guarantee the furnace atmosphere, inert gas injection is adopted in the furnace, always guaranteeing micro positive pressure, that is, pressure of the furnace protective gas is slightly greater than atmospheric pressure outside the furnace, which can effectively prevent air from entering the furnace, thereby guaranteeing production safety and strip quality. The main problem of bearing seat at present is oil leakage into the furnace.
[0004] Reasons of oil leakage into the furnace are as follows: when the lip seal of bearing seat is worn or aged and invalid, furnace gas will flow outwards. At the beginning of invalidation, furnace gas flows to bearing seat; because bearing seat belongs to closed space, with gas gathering, gas pressure of bearing seat will be greater than furnace atmosphere pressure, at this time, gas pressure drives lubricating oil to flow into the furnace, finally causing internal leakage phenomenon. When oil adheres to the strip, it will cause the strip to turn yellow. Conventional treatment methods are as follows: ① oil supplement during point inspection, to avoid bearing seat oil shortage; ② replacement of lip seal after single motor is powered off during parking and unloading during maintenance time. Problems of conventional treatment methods are as follows: when replacement cannot be carried out, frequent oil supplement will increase oil flow into the furnace, seriously influencing strip quality.
[0005] Therefore, in order to solve the internal leakage problem, an oil hole bolt with pressure reduction function is designed. UTILITY MODEL CONTENTS
[0006] The utility model aims at providing a bearing seat oil hole bolt with pressure reduction function, which can reduce pressure of an oil chamber of bearing seat when the lip seal of bearing seat is invalid and leaks, always keep furnace pressure greater than external pressure, prevent lubricating oil of bearing seat from flowing into the furnace, avoid bearing seizure caused by bearing oil leakage, effectively reduce accident rate and solve problems in the background technology.
[0007] The technical scheme of the utility model is as follows:
[0008] The utility model discloses a bearing seat oil hole bolt with pressure reduction function, containing the bolt cap and bolt rod of integrated structure, the bolt rod is equipped with the center hole, the center hole is closed structure near the bolt cap one end, be equipped with with the center hole intercommunication diffusion hole, be equipped with fixed pressure sheet, movable pressure sheet and spring in the center hole, movable pressure sheet is located between fixed pressure sheet and spring, and fixed pressure sheet and bolt cap are connected together through adjusting screw rod, and fixed pressure sheet and movable pressure sheet are equipped with diffusion hole of staggered arrangement respectively.
[0009] The diffusion hole end is equipped with the bursting disc.
[0010] The bursting disc is spot-welded on the bolt cap.
[0011] The fixed pressure sheet and movable pressure sheet are equipped with sealing rubber ring matched with the bolt rod in the circumferential direction respectively.
[0012] One end of the adjusting screw rod is threadedly connected with the bolt cap, and the other end of the adjusting screw rod is provided with a slot.
[0013] The diffusion hole on the fixed pressure sheet and the diffusion hole on the movable pressure sheet are at an angle of 45°.
[0014] The utility model discloses the beneficial effect is: can when bearing seat lip seal failure, reduce the pressure of bearing seat oil chamber, always keep furnace pressure greater than the external pressure, prevent bearing seat lubricating oil from flowing to the furnace and cause strip steel yellowing, and avoid bearing seizure caused by bearing seat oil leakage, effectively reduce the accident rate. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the front view of the utility model;
[0016] Figure 2 It is the section view of the utility model;
[0017] Figure 3 It is the left view of the utility model;
[0018] Figure 4 It is the right view of the utility model;
[0019] Figure 5 It is the background technology schematic drawing;
[0020] In the drawing: adjusting screw rod 1, fixed pressure sheet 2, sealing rubber ring 3, movable pressure sheet 4, spring 5, diffusion hole 6, diffusion hole 7, bolt cap 8, bursting disc 9, bolt rod 10, center hole 11, bearing seat 12, lip seal 13, furnace roller 14, furnace 15. DETAILED DESCRIPTION
[0021] The utility model is further explained through examples in combination with the drawings.
[0022] Refer to the drawings Figures 1-4 A bearing seat oil hole bolt with pressure reduction function comprises a bolt cap 8 and a bolt rod 10 which are integrated, the bolt rod 10 is provided with a center hole 11, the center hole 11 is closed at one end close to the bolt cap 8, the bolt cap 8 is provided with a diffusion hole 6 which is connected with the center hole 11, the center hole 11 is provided with a fixed pressure plate 2, a movable pressure plate 4 and a spring 5, the movable pressure plate 4 is located between the fixed pressure plate 2 and the spring 5, the fixed pressure plate 2 and the bolt cap 8 are connected together through an adjusting screw rod 1, the fixed pressure plate 2 and the movable pressure plate 4 are respectively provided with diffusion holes 7 which are staggered.
[0023] In the embodiment, refer to the drawings Figures 1-4 The bearing seat oil hole bolt comprises the adjusting screw rod 1, the fixed pressure plate 2, the sealing rubber ring 3, the movable pressure plate 4, the spring 5, the diffusion hole 6, the diffusion hole 7, the bolt cap 8, the bursting disc 9, the bolt rod 10 and the center hole 11, and the specific assembly and debugging process is as follows:
[0024] Assembly stage: one end of the adjusting screw rod 1 is welded and fixed with the inner hole of the fixed pressure plate 2, and the end of the adjusting screw rod 1 is provided with a slot, the pressure of the spring 5 by the fixed pressure plate 2 is controlled by rotating; the sealing rubber ring 3 is installed in the circumferential sealing groove of the fixed pressure plate 2; the movable pressure plate 4 is installed on the side of the fixed pressure plate 2 which is not welded, the sealing rubber ring 3 is installed in the circumferential sealing groove of the movable pressure plate 4, four diffusion holes 7 are respectively formed in the fixed pressure plate 2 and the movable pressure plate 4, the four diffusion holes 7 in the fixed pressure plate 2 and the four diffusion holes 7 in the movable pressure plate 4 are arranged at a 45° angle, and the spring 5 is installed on the other side of the movable pressure plate 4; after the above steps are completed, the other end of the adjusting screw rod 1 is threadedly connected with the bolt cap 8.
[0025] The diffusion hole 6 is formed in the bolt cap 8 and is connected with the center hole 11, which can ensure that the gas is smoothly discharged, thereby achieving the effect of pressure reduction.
[0026] The bursting disc 9 is arranged outside the diffusion hole 6, when the gas leakage occurs, the bursting disc 9 is pushed open, thereby achieving the purpose of more intuitive inspection.
[0027] Test adjustment: the compressed gas is introduced into the left side of the assembled bolt, the pressure is adjusted by rotating the adjusting screw rod 1, and the adjusted pressure should be slightly greater than the pressure in the furnace.
[0028] Installation stage: after the pressure is adjusted, the bolt is installed at the oil hole position of the bearing seat, and the bolt can be tightened by using a dead wrench, when not in use, the internal adjusting screw rod 1 is disassembled again, and the slot in the adjusting screw rod 1 can be used to fine-tune the pressure.
[0029] The working principle of the present application is as follows:
[0030] The pressure relief bolt is installed in the bearing chock oiling hole position. When gas leaks from the furnace through the bearing chock damaged lip seal to the bearing chock oil chamber, the gas begins to accumulate; at this time the gas pressure in the bearing chock oil chamber is less than the gas pressure in the furnace, therefore, the gas continues to leak through the lip seal to the bearing chock oil chamber. When the gas accumulates to a certain pressure, at this time the gas pressure in the bearing chock oil chamber is slightly greater than the gas pressure in the furnace, the gas pushes the movable pressure plate 2 open through the vent hole 7 on the fixed pressure plate 2, then enters the spring chamber through the vent hole 7 on the movable pressure plate 2 and then reaches the vent hole 6, pushing the burst disc 9 open, from this point the pressure in the bearing chock oil chamber is the same as atmospheric pressure, when the lip seal is damaged, the gas can still seal the oil in the oil chamber, thereby reducing the situation of bearing seizure due to oil leakage and reducing the impact on production.
Claims
1. A bearing chock oil hole bolt with pressure reduction function, comprising a bolt cap (8) and a bolt rod (10) constituting an integrated structure, characterized in that: The bolt rod (10) is provided with a center hole (11), the center hole (11) is closed structure near the bolt cap (8) one end, the bolt cap (8) is provided with the diffusion hole (6) that communicates with the center hole (11), the center hole (11) is provided with fixed pressing plate (2), movable pressing plate (4) and spring (5), movable pressing plate (4) is located between fixed pressing plate (2) and spring (5), fixed pressing plate (2) and bolt cap (8) are connected together through adjusting screw rod (1), fixed pressing plate (2) and movable pressing plate (4) are respectively provided with the diffusion hole (7) that is arranged alternately.
2. The bearing seat oil filler hole bolt with pressure reduction function according to claim 1, characterized in that: The end of the diffusion hole (6) is provided with a bursting disc (9).
3. The bearing seat oil filler hole bolt with pressure reduction function according to claim 2, characterized in that: The bursting disc (9) is spot welded on the bolt cap (8).
4. The bearing seat oil filler hole bolt with pressure reduction function according to claim 1, characterized in that: The circumference of the fixed pressing plate (2) and movable pressing plate (4) is respectively provided with a sealing rubber ring (3) matched with the bolt rod (10).
5. The bearing seat oil filler hole bolt with pressure reduction function according to claim 1, characterized in that: One end of the adjusting screw rod (1) is threadedly connected with the bolt cap (8), and the other end of the adjusting screw rod (1) is provided with a slot.
6. The bearing seat oil filler hole bolt with pressure reduction function according to claim 1, characterized in that: The included angle between the diffusion hole (7) on the fixed pressing plate (2) and the diffusion hole (7) on the movable pressing plate (4) is 45°.