Bearing box capable of automatically supplementing oil
Automatic oil replenishment through the magnetic flap level gauge and PLC controller, combined with temperature sensors and cooling components, the problem of lubricant oil leakage and replacement is solved, automatic lubrication and non-stop replacement are achieved, and equipment operation reliability and production continuity are improved.
Patent Information
- Application Number
- CN202421541918.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-07-02
AI Technical Summary
In the prior art, the lubricating oil in the bearing box is prone to leakage, and the oil level is not checked manually in time, resulting in abnormal lubrication, affecting the operation of the equipment, and the oil replacement requires shutdown operation, affecting production.
The magnetic flap level meter and PLC controller are combined with a solenoid valve to achieve automatic oil replenishment; set up a temperature sensor and cooling component to monitor and adjust the oil temperature; add fuel injectors and recycling components to achieve oil replacement without stopping.
The automatic oil replenishment and lubricating oil temperature control of the bearing box is realized to ensure lubricating performance, avoid equipment damage, and be able to replace oil without shutting down to improve production continuity.
Smart Images
Figure CN223203512U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearing boxes, in particular to a bearing box capable of automatically replenishing oil. Background Art
[0002] The metallurgical industry uses a large number of pumps and fans, such as boiler forced draft fans and bag-type dust collector fans for environmental protection systems. These fans are connected to a bearing housing through a coupling, which in turn connects the bearing housing to the fan impeller, forming the entire fan system. During operation, the bearings operate at high speeds, and thin oil is typically used to lubricate and cool the bearings. This high-speed rotation generates significant heat, causing the lubricant to thin. Furthermore, factors such as aging seals (damaged felt pads or O-rings) or clogged bearing oil return holes can lead to oil leakage. A low oil level can affect bearing lubrication. Currently, regular manual checks are often used to ensure normal oil levels. This presents several challenges: First, manual checks are highly subjective, prone to false positives, missed detections, and inaccurate observations. Furthermore, regular checks fail to immediately detect oil level problems or lubrication issues, resulting in poor timeliness and potentially serious damage to the equipment. Secondly, the existing method can only simply add oil from the oil filling hole. If the operation time is too long and the oil is contaminated and lost, the machine needs to be stopped to replace the oil, which will affect production. Utility Model Content
[0003] The purpose of the present invention is to provide a bearing box capable of automatically replenishing oil to address the drawbacks of the prior art and solve the problems mentioned in the background art.
[0004] The problem described in this utility model is solved by the following technical solutions:
[0005] A large fan bearing box capable of automatic oil replenishment comprises a box body and a first bearing, a second bearing and a rotating shaft arranged therein; an oil replenishment port is provided above the box body, the oil replenishment port is connected to an oil replenishment tank, a first solenoid valve is provided between the oil replenishment tank and the oil replenishment port, a magnetic flap level gauge is provided on the box body, an oil drain port is provided below the box body, and a second solenoid valve is provided on the oil drain port; a signal switch of the magnetic flap level gauge is connected to an input of a PLC controller, and an output of the PLC controller controls the first solenoid valve and the second solenoid valve respectively through relay connections.
[0006] The above-mentioned large fan bearing box that can automatically replenish oil is provided with temperature sensors on the sides of the first bearing and the second bearing; and a cooling component is additionally provided, which consists of a radiator and a second oil pump. One end of the radiator is connected to the oil outlet end of the second solenoid valve through an oil pipe, and the other end of the radiator is connected to the oil replenishment tank. A second oil pump and a third solenoid valve are provided between the second solenoid valve and the radiator; the output signal of the temperature sensor is connected to an input end of the PLC controller, and an output end of the PLC controller is connected to control the second oil pump through a relay.
[0007] The above-mentioned large fan bearing box that can automatically replenish oil is provided with oil nozzles on the sides of the first bearing and the second bearing, and the oil spraying directions of the oil nozzles are respectively directed towards the first bearing and the second bearing; the nozzles are connected to the oil replenishment tank through the first oil pump; one output end of the PLC controller is connected to control the start and stop of the first oil pump through a relay; a recovery component is connected between the second oil pump and the third solenoid valve, and the recovery component consists of a recovery oil tank and a fourth solenoid valve.
[0008] The large-scale fan bearing box capable of automatically replenishing oil is provided with an observation hole on the box body. Beneficial effects
[0009] Compared with the prior art, the present invention has the following advantages: First, by arranging a magnetic flap level gauge on the box body, and arranging an oil replenishing tank and a first solenoid valve and a second solenoid valve, which are controlled by a PLC, the PLC controller automatically controls the opening and closing of the solenoid valve according to the oil position in the box body, thereby realizing automatic oil replenishment. Second, by arranging a temperature sensor, a cooling component and a second oil pump, the temperature of the oil in the box body can be monitored, and the cooling component can be started to circulate and cool the oil to ensure the lubrication performance of the oil. Third, by arranging a recovery component and an oil spray nozzle, the oil that has been running for too long can be replaced without stopping the machine. When the oil is replaced, under the action of the first oil pump, the oil in the oil replenishing tank is directly sprayed from the oil spray nozzle to lubricate the bearing. After the oil replacement is completed, the liquid level in the box body returns to the working position, and the oil spray nozzle works to realize the replacement of the oil without stopping the machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The present invention will be further described below in conjunction with the accompanying drawings.
[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0012] The reference numerals in the figure represent:
[0013] 1. Housing, 2. First bearing, 3. Second bearing, 4. Rotating shaft, 5. Oil supply tank, 6. Oil drain port, 2-1. Fuel injector, 2-2. First oil pump, 2-3. Temperature sensor, 2-4. Radiator, 2-5. Second oil pump, 5-1. First solenoid valve, 6-1. Second solenoid valve. DETAILED DESCRIPTION
[0014] The technical solution of the present utility model is described in further detail below with reference to the accompanying drawings.
[0015] See Figure 1 The utility model includes a housing 1, a first bearing 2, a second bearing 3, and a rotating shaft 4 disposed therein; an oil replenishment port is provided above the housing 1 and connected to an oil replenishment tank 5. A first solenoid valve 5-1 is disposed between the oil replenishment tank 5 and the oil replenishment port; a magnetic flap level gauge is provided on the housing 1; an oil drain port 6 is provided below the housing 1, and a second solenoid valve 6-1 is provided above the oil drain port; the signal switch of the magnetic flap level gauge is connected to the input of a PLC controller, and the output of the PLC controller controls the first solenoid valve 5-1 and the second solenoid valve 6-1 via relays. The magnetic flap level gauge can be the UHZ-517C model, with a measurement range of 0-500mm, which meets the requirements.
[0016] The PLC controller can be Siemens S7-200 series or S7-200 SMART series. The bottom height of the oil filling tank 5 is higher than the height of the oil filling port, so that the oil can automatically flow into the box body 1 by its own gravity when filling.
[0017] After the bearing box has been running for a long time, the temperature will rise, which will affect the performance of the lubricating oil and the sealing of the box. The following settings can be added to reduce the temperature: a temperature sensor 2-3 is provided on the side of the first bearing 2 and the second bearing 3; and a cooling component is added, which consists of a radiator 2-4 and a second oil pump 2-5. One end of the radiator 2-4 is connected to the oil outlet end of the second solenoid valve 6-1 through an oil pipe, and the other end of the radiator 2-4 is connected to the oil replenishment tank 5. A second oil pump 2-5 and a third solenoid valve 2-6 are provided between the second solenoid valve 6-1 and the radiator 2-4; the output signal of the temperature sensor 2-3 is connected to an input end of the PLC controller, and an output end of the PLC controller is connected to control the second oil pump 2-5 through a relay.
[0018] The number of the temperature sensors 2-3 is set to 2-3, and the temperature sensors 2-3 can also be immersed in the oil of the box body 1. When immersed in the oil, one or two temperature sensors 2-3 can be set.
[0019] The above scheme can only meet the needs of oil replenishment and temperature reduction. If the oil runs for too long and needs to be replaced, an oil nozzle and an oil recovery component can be added: an oil nozzle 2-1 is provided on the side of the first bearing 2 and the second bearing 3, and the oil spraying direction of the oil nozzle 2-1 is toward the first bearing 2 and the second bearing 3 respectively; the nozzle 2-1 is connected to the oil replenishment tank 5 through the first oil pump 2-2; one output end of the PLC controller is connected to control the start and stop of the first oil pump 2-2 through a relay; a recovery component is connected between the second oil pump 2-5 and the third solenoid valve 2-6, and the recovery component consists of a recovery oil tank 7 and a fourth solenoid valve 7-1. During recovery, the PLC controller opens the second solenoid valve 6-1, closes the third solenoid valve 2-6, and opens the fourth solenoid valve 7-1. Under the influence of gravity and the second oil pump 2-5, the oil flows through the oil pipe to the recovery tank 7. During this process, the PLC simultaneously controls the operation of the first oil pump 2-2, spraying oil into the first and second bearings 2 and 3. Simultaneously, the first solenoid valve 5-1 opens to replenish oil into the tank 1. Once the oil replacement is complete and the liquid level in the tank returns to its working position, the oil spray nozzles activate, enabling non-stop oil replacement.
[0020] In order to facilitate manual inspection and monitoring, an observation hole can be provided on the box body 1.
Claims
1. A bearing box capable of automatically replenishing oil, comprising a box body (1) and a first bearing (2), a second bearing (3) and a rotating shaft (4) arranged therein; characterized in that: An oil replenishing port is provided above the box body (1), the oil replenishing port is connected to the oil replenishing tank (5), a first solenoid valve (5-1) is provided between the oil replenishing tank (5) and the oil replenishing port, a magnetic flap level gauge is provided on the box body (1), an oil discharge port (6) is provided below the box body (1), and a second solenoid valve (6-1) is provided on the oil discharge port; a signal switch of the magnetic flap level gauge is connected to an input of a PLC controller, and an output of the PLC controller is connected to control the first solenoid valve (5-1) and the second solenoid valve (6-1) through a relay.
2. The bearing box capable of automatically replenishing oil according to claim 1, characterized in that: A temperature sensor (2-3) is provided at the side of the first bearing (2) and the second bearing (3); and a cooling assembly is additionally provided, the cooling assembly consisting of a radiator (2-4) and a second oil pump (2-5); one end of the radiator (2-4) is connected to the oil outlet end of the second solenoid valve (6-1) through an oil pipe, and the other end of the radiator (2-4) is connected to the oil supply tank (5); a second oil pump (2-5) and a third solenoid valve (2-6) are provided between the second solenoid valve (6-1) and the radiator (2-4); an output signal of the temperature sensor (2-3) is connected to an input end of a PLC controller, and an output end of the PLC controller is connected to control the second oil pump (2-5) through a relay.
3. The bearing box capable of automatically replenishing oil according to claim 2, characterized in that: An oil nozzle (2-1) is provided on the side of the first bearing (2) and the second bearing (3), and the oil spraying direction of the oil nozzle (2-1) is directed toward the first bearing (2) and the second bearing (3), respectively; the oil nozzle (2-1) is connected to the oil replenishment tank (5) through the first oil pump (2-2); an output end of the PLC controller is connected to control the start and stop of the first oil pump (2-2) through a relay; a recovery component is connected between the second oil pump (2-5) and the third solenoid valve (2-6), and the recovery component is composed of a recovery oil tank (7) and a fourth solenoid valve (7-1).
4. The bearing box capable of automatically replenishing oil according to claim 1, characterized in that: An observation hole is provided on the box body (1).