A reducer oil return device

Abstract

The utility model discloses a reducer oil return device, including a thin oil station, an oil return pipe and an oil inlet pipe, wherein the outlet of the thin oil station is connected to the reducer oil inlet via the oil inlet pipe, and the inlet of the thin oil station is connected to the reducer oil outlet via the oil return pipe; the utility model also includes an oil retaining pipe and an oil return valve, wherein the oil return valve is arranged on the oil return pipe, and the two ends of the oil retaining pipe are respectively connected to the positions on both sides of the oil return valve of the oil return pipe, the oil retaining pipe is vertically extended upward and then folded back, and the highest point of the oil retaining pipe is higher than the reducer oil outlet by a certain oil retaining height value. Placing the oil retaining pipe at a high position blocks the outflow of lubricating oil in the reducer, so that the reducer has lubricating oil in it and can continue to run for a certain period of time.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, in particular to a reducer oil return device. Background Art

[0002] The cement rotary kiln is the main equipment for cement production. For example, the Chinese patent document "Cement Rotary Kiln, Publication No. CN201034411Y" discloses a cement rotary kiln, which is horizontal and has an overall tilted arrangement with the left side high and the right side low; the feed port is arranged at the left end of the kiln shell, and the discharge port is arranged at the right end of the kiln shell; a plurality of roller seats are evenly arranged on the lower side of the kiln shell, and a plurality of rollers are arranged on each roller seat, and the plurality of roller seats support the cement rotary kiln through the rollers; the rotary power device includes an outer gear ring, an outer gear and a reduction motor, the outer gear ring is sleeved on the outer surface of the kiln shell and meshes with the outer gear, and the outer gear is connected to the output end of the reduction motor; the coal injection combustion-supporting device is arranged at the right end of the cement rotary kiln. The rotary kiln reducer is generally equipped with a thin oil station for filtering and other treatments, and the lubricating oil flows back from the reducer oil outlet, is treated by the thin oil station, and then flows into the reducer from the reducer oil inlet. However, the oil outlet of the reducer is set at the bottom, and the return oil flows directly to the lower thin oil station. If the thin oil station fails and stops producing oil, the lubricating oil in the reducer will flow out quickly, and the reducer will have to shut down. Utility Model Content

[0003] The invention object of the utility model is to provide a reducer oil return device in view of the above problem, wherein the oil retaining pipe is located at a high position to block the outflow of lubricating oil in the reducer, so that lubricating oil remains in the reducer and can continue to run for a certain period of time.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] A reducer oil return device comprises a thin oil station, an oil return pipe and an oil inlet pipe, wherein the outlet of the thin oil station is connected to the oil inlet of the reducer via the oil inlet pipe, and the inlet of the thin oil station is connected to the oil outlet of the reducer via the oil return pipe; the device also comprises an oil retaining pipe and an oil return valve, wherein the oil return valve is arranged on the oil return pipe, and the two ends of the oil retaining pipe are respectively connected to the positions on both sides of the oil return valve of the oil return pipe, the oil retaining pipe extends vertically upward and then turns back, and the highest point of the oil retaining pipe is higher than the oil outlet of the reducer by a certain oil retaining height value.

[0006] Among them, the highest oil retention height value of the oil retention pipe is 50cm-150cm.

[0007] As mentioned above, the oil return pipe is first divided into two branches. One branch is connected to the dilution oil station through the rear section of the oil return pipe, and the other branch is first extended upward through the oil retention pipe to a certain height above the oil outlet of the reducer and then turned back to connect and converge to the rear section of the oil return pipe. An oil return valve is arranged between the confluence point and the branch point. In this way, when the dilution oil station fails and stops, the oil return valve is closed, and the oil retention pipe is at a high place to block the outflow of the lubricating oil in the reducer. The reducer has lubricating oil and can continue to run for a certain period of time.

[0008] Based on the above solution, in an improved solution, the oil return device also includes a flow detector, which is arranged on the outlet or oil inlet pipe of the oil thinning station, and is electrically connected to the controller of the oil thinning station. The oil return valve is an oil return solenoid valve, and the oil return solenoid valve is electrically connected to the controller of the oil thinning station. In this way, automatic detection and control can be achieved. When the oil thinning station fails to produce oil, the oil return solenoid valve is automatically closed to prevent the lubricating oil in the speed reducer from quickly flowing out to the oil thinning station.

[0009] Based on the above scheme, in an improved scheme, the oil return device also includes an oil retention valve, which is arranged at the end of the oil retention pipe close to the oil outlet of the reducer; in this way, the oil retention valve is closed when the oil retention pipe is not in use to prevent the diversion from causing the lubricating oil flow rate to be lower than the design and causing impurities to remain. In a preferred improved scheme, the oil retention valve is an oil retention solenoid valve, which is electrically connected to the controller of the oil dilution station; in this way, it can be linked with the oil return solenoid valve, one on and one off, to achieve automatic control.

[0010] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0011] 1. The utility model provides an oil return device for a reducer, wherein the oil return pipe is firstly branched into two branches, one branch is connected to the thin oil station through the rear section of the oil return pipe, and the other branch is firstly extended upward through the oil retaining pipe to a certain height above the oil outlet of the reducer and then turned back to be connected and converged to the rear section of the oil return pipe, and an oil return valve is arranged between the confluence point and the branch point. In this way, when the thin oil station fails and stops, the oil return valve is closed, and the oil retaining pipe is at a high position to block the outflow of the lubricating oil in the reducer. The lubricating oil remains in the reducer and the reducer can continue to run for a certain period of time.

[0012] 2. The control system is composed of a flow detector, a controller of the thin oil station, and an oil return solenoid valve, which can realize automatic detection and control. When the thin oil station fails to produce oil, the oil return solenoid valve is automatically closed to prevent the lubricating oil in the deceleration reducer from flowing out quickly to the thin oil station.

[0013] 3. Arrange an oil retaining valve on the oil retaining pipe and close the oil retaining valve when the oil retaining pipe is not in use to prevent diversion from causing the lubricating oil flow rate to be lower than the design and causing impurities to remain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the oil pipe connection structure of Example 1 of the utility model.

[0015] Figure 2 It is a schematic diagram of the oil pipe connection structure of Example 2 of the utility model.

[0016] In the attached drawings, 10, reducer, 20, workbench, 1, oil return pipe, 2, oil retaining pipe, 3, oil return valve, 4, oil retaining valve. DETAILED DESCRIPTION

[0017] Example 1

[0018] See also Figure 1 , a reducer oil return device of this embodiment 1 includes a thin oil station, an oil return pipe 1 and an oil inlet pipe, the outlet of the thin oil station is connected to the oil inlet of the reducer 10 through the oil inlet pipe, and the inlet of the thin oil station is connected to the oil outlet of the reducer 10 through the oil return pipe 1; it also includes an oil retaining pipe 2 and an oil return valve 3, the oil return valve 3 is arranged on the oil return pipe 1, both ends of the oil retaining pipe 2 are respectively connected to the positions on both sides of the oil return valve of the oil return pipe 1, the oil retaining pipe 2 extends vertically upward and then turns back, and the highest point of the oil retaining pipe 2 is higher than the oil outlet of the reducer by a certain oil retaining height value.

[0019] Among them, the reducer and the dilute oil station are both existing technologies. The reducer 10 is generally arranged on the workbench 20, and the dilute oil station is generally arranged under the workbench. The dilute oil station is equipped with a pump, a controller, a flow detector, etc. to achieve monitoring and control, which will not be repeated here. The pipeline can use a special steel pipe, the valve can use a ball valve, and they are interconnected through flanges, etc., which are all existing technologies and will not be repeated here.

[0020] Relative to the oil outlet of the reducer, the oil height h at the highest point of the oil pipe is 50cm-150cm. The specific size is selected according to the reducer model, typically 60cm, 80cm or 120cm.

[0021] As mentioned above, the oil return pipe 1 is first divided into two branches, one of which is connected to the dilute oil station through the rear section 11 of the oil return pipe, and the other branch is first extended upward through the oil retaining pipe 2 to a certain height above the oil outlet of the reducer and then turned back to connect and converge to the rear section 11 of the oil return pipe. The oil return valve 3 is arranged between the confluence point and the branch point. In this way, when the dilute oil station fails and stops, the oil return valve is closed, and the oil retaining pipe is at a high place to block the outflow of lubricating oil in the reducer. The reducer has lubricating oil and can continue to run for a certain period of time. In this way, this time can be used for emergency repairs, or a safe shutdown can be arranged according to the operating conditions of the equipment.

[0022] Example 2

[0023] Based on the aforementioned embodiment 1, this embodiment 2 has automatic control, which is specifically as follows. For other matters not fully explained, please refer to the aforementioned embodiment 1.

[0024] See also Figure 1The oil return device of this embodiment 2 also includes a flow detector, which is arranged on the outlet or oil inlet pipe of the thin oil station, and is electrically connected to the controller of the thin oil station. The oil return valve is an oil return solenoid valve, and the oil return solenoid valve is electrically connected to the controller of the thin oil station.

[0025] An external oil return solenoid valve is connected to the existing thin oil station controller. This solenoid valve is an existing technology and can be connected and controlled according to the factory instructions and connection lines. At the same time, some existing thin oil stations are also equipped with flow detectors to monitor the oil output status, and the solenoid valve is controlled according to this parameter.

[0026] The flow detector monitors the oil output information of the oil station and transmits it to the controller. The controller processes the oil output data and then outputs a control signal according to the preset conditions. The oil return solenoid valve receives the control signal to perform a closing or opening operation. When the oil output data is lower than the threshold or even no oil is discharged, the oil return solenoid valve is closed, otherwise it is opened.

[0027] In this way, automatic detection and control can be achieved. When the thin oil station fails to produce oil, the oil return solenoid valve is automatically closed to prevent the lubricating oil in the deceleration reducer from quickly flowing out to the thin oil station.

[0028] Example 3

[0029] Based on the aforementioned embodiment 1 or 2, the present embodiment 3 defines the oil pipe switch, which is specifically as follows. For other unexplained details, please refer to the aforementioned embodiments 1-2.

[0030] See also Figure 2 The oil return device of the present embodiment 3 further comprises an oil retaining valve 4, and the oil retaining valve 4 is arranged at the oil retaining pipe 2 close to the oil outlet end of the reducer.

[0031] Valves are set on the two branches respectively. According to the actual use conditions, one branch valve can be opened and the other branch valve can be closed. When the oil pipe branch is used, the return oil valve is closed and the oil retaining valve is opened. When the return oil pipe branch is used (the oil pipe branch is not used), the return oil valve is opened and the oil retaining valve is closed.

[0032] In this way, when the oil retaining pipe is not in use, the oil retaining valve is closed to prevent diversion from causing the lubricating oil flow rate to be lower than the design and causing impurities to remain.

[0033] Example 4

[0034] Based on the aforementioned embodiment 3, this embodiment 4 is provided with an automatic control oil pipe switch, as described below. For other matters not fully described, please refer to the aforementioned embodiments 1-3.

[0035] See also Figure 2 In the oil return device of the present embodiment 4, the oil retaining valve is an oil retaining solenoid valve, and the oil retaining solenoid valve is electrically connected to the controller of the thin oil station.

[0036] As the aforementioned oil return solenoid valve is connected and controlled, the oil retention solenoid valve is connected. The flow detector monitors the oil output information of the thin oil station and transmits it to the controller. The controller processes the oil output data and then outputs a control signal according to the preset conditions. The oil retention solenoid valve receives the control signal and performs a closing or opening operation. When the oil output data is lower than the threshold or even no oil is discharged, the oil retention solenoid valve is opened, otherwise it is closed. In this way, the automatic control of the oil retention valve is realized.

[0037] On the other hand, the oil return solenoid valve and the oil retention solenoid valve are set at the same time. At this time, when the oil output data is lower than the threshold or even no oil is output, the oil retention solenoid valve is opened and the oil return solenoid valve is closed. On the contrary, the oil retention solenoid valve is closed and the oil return solenoid valve is opened. In this way, it can be linked with the oil return solenoid valve, one opening and one closing, to achieve automatic control.

[0038] It should be pointed out that the examples of the above-mentioned embodiments can be preferably combined with one or more of them according to actual needs, and multiple examples use a set of drawings to illustrate the combined technical features, which will not be described one by one here.

[0039] It should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0040] The above description is a detailed description and illustration of the preferred feasible embodiments of the utility model, but these descriptions are not intended to limit the scope of protection required by the utility model. All equivalent changes or modified changes completed under the technical teachings suggested by the utility model should fall within the scope of patent protection covered by the utility model.

Claims

1. A reducer oil return device, comprising a thin oil station, an oil return pipe and an oil inlet pipe, wherein the outlet of the thin oil station is connected to the reducer oil inlet via the oil inlet pipe, and the inlet of the thin oil station is connected to the reducer oil outlet via the oil return pipe; characterized in that: It also includes an oil retaining pipe and an oil return valve. The oil return valve is arranged on the oil return pipe. Both ends of the oil retaining pipe are respectively connected to the positions on both sides of the oil return valve of the oil return pipe. The oil retaining pipe extends vertically upward and then turns back, and the highest point of the oil retaining pipe is higher than the oil outlet of the reducer by a certain oil retaining height value.

2. The reducer oil return device according to claim 1, characterized in that: It also includes a flow detector, which is arranged on the outlet or oil inlet pipe of the dilution station and is electrically connected to the controller of the dilution station. The return oil valve is an oil return solenoid valve, which is electrically connected to the controller of the dilution station.

3. A reducer oil return device according to claim 1 or 2, characterized in that: It also includes an oil retaining valve, which is arranged at the end of the oil retaining pipe close to the oil outlet of the reducer.

4. The reducer oil return device according to claim 3, characterized in that: The oil retaining valve is an oil retaining solenoid valve, and the oil retaining solenoid valve is electrically connected to a controller of the thin oil station.

5. The reducer oil return device according to claim 2, characterized in that: The oil retention height at the highest point of the oil retention pipe is 50cm-150cm.

Images