Waste oil cleaning device for large and small gears of coal mill

Abstract

The utility model discloses a coal mill large and small gear waste oil cleaning device which comprises a tensioning roller, a driven roller and a positioning carrier roller which are rotationally connected to the inner side face of a gear cover lower housing, a conveying belt is arranged on the outer side face of the tensioning roller, the outer side face of the driven roller and the outer side face of the positioning carrier roller, and the conveying belt inclines downwards from left to right. A driving motor and a speed reducer are arranged on one side of the gear cover lower cover shell, an output shaft of the driving motor is connected with the speed reducer, one end of the tensioning roller penetrates through the gear cover lower cover shell to be connected with the output shaft of the speed reducer, and a tensioning assembly enabling the conveying belt to be kept in a tensioning state all the time is arranged in the tensioning roller. A collecting assembly used for collecting waste oil is arranged on the right side of the conveying belt. The utility model has the advantage that waste oil is convenient to discharge.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mill technical field relates to a coal mill gear waste oil cleaning device. BACKGROUND

[0002] Double-in double-out steel ball coal mill is the main equipment of direct-fired coal mill system of thermal power plant, and the transmission of the coal mill is driven by the output shaft of the driving motor and the reducer, and the pinion is engaged with the gear fixed on the mill cylinder to drive the cylinder to rotate. During the operation of the coal mill, oil mist needs to be sprayed to the meshing area of the gear and the pinion regularly. After the oil mist lubricates the gear, it is thrown out to the lower cover of the gear cover under the centrifugal force of the gear rotation. Because of the large viscosity of the lubricating oil, the waste oil cannot be discharged from the oil outlet at the bottom of the lower cover. Moreover, the gear cover is provided with a gear sealing air device. In the case of long-term air drying, the waste oil becomes more viscous. Therefore, the waste oil can only be removed from the observation hole of the gear cover to the waste oil tank by using a rake and a shovel manually when the coal mill is shut down, which is time-consuming and labor-intensive. SUMMARY

[0003] In view of the above problems, the utility model provides a coal mill gear waste oil cleaning device, which solves the problems in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme: a coal mill gear waste oil cleaning device, comprising a tensioning drum, a driven drum and a positioning carrier roller which are rotationally connected to the inner side surface of the lower cover of the gear cover, a transmission belt is arranged on the outer side surface of the tensioning drum, the driven drum and the positioning carrier roller, the transmission belt is inclined downward from left to right, a driving motor and a reducer are arranged on one side of the lower cover of the gear cover, the output shaft of the driving motor is connected with the reducer, one end of the tensioning drum is connected with the output shaft of the reducer through the lower cover of the gear cover, a tensioning assembly is arranged in the tensioning drum to keep the transmission belt in a tensioned state, and a collecting assembly for collecting waste oil is arranged on the right side of the transmission belt.

[0005] Further, the tensioning assembly comprises a plurality of extension plates which are slidingly connected to the circumferential side surface of the tensioning drum and a plurality of arc-shaped plates which are arranged on the extension shafts extending out of one end of the tensioning drum, the plurality of arc-shaped plates can be connected and spliced into a circular ring in a head-to-tail manner, a plurality of arc grooves are arranged on the front and rear side surfaces of the tensioning drum, the plurality of arc grooves are arranged in a ring array, the front and rear side surfaces of the extension plates are provided with extension shafts which are slidingly connected in the arc grooves, and the centers of the extension plates and the arc groove array are the centers of the front and rear side surfaces of the tensioning drum.

[0006] Further, the inner side of the transmission belt is provided with a plurality of anti-deflection blocks, the outer side of the driven roller and the positioning roller is provided with a plurality of anti-deflection slots, the anti-deflection blocks can be inserted into the anti-deflection slots and the gap between two adjacent arc-shaped plates.

[0007] Further, the right side of the gear cover lower shell is provided with an oil outlet, the collecting assembly comprises a rotating shaft rotatably connected to the lower end of the oil outlet, the circumferential side of the rotating shaft is provided with an oil discharge plate and a weight, the weight is located on the left side of the rotating shaft, and the included angle between the weight and the lower side of the oil discharge plate is an acute angle, the right side of the gear cover lower shell is provided with an oil tank, and the oil discharge plate is inclined downward from left to right, the left end of the oil discharge plate is in contact with the transmission belt, and the right end is located above the oil tank.

[0008] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0009] The utility model discloses a tensioning roller, driven roller, positioning roller, transmission belt, speed reducer and driving motor realize the discharge of waste oil, realize the collection of waste oil through the collecting assembly, improve the convenience of staff when cleaning and collecting waste oil, realize the tensioning of conveying belt through the tensioning assembly, guarantee the conveying effect of conveying belt. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure schematic view of the utility model;

[0011] Figure 2 It is the structure schematic view of the utility model collecting assembly;

[0012] Figure 3 It is the structure schematic view of the utility model tensioning roller;

[0013] Figure 4 It is the driven roller of the utility model overhead view;

[0014] Figure 5 It is the overhead view of the utility model;

[0015] Figure 6 It is the working schematic view of the utility model.

[0016] In the drawing: 1, tensioning roller;1.1, arc-shaped plate;1.2, telescopic plate;1.3, telescopic shaft;2, driven roller;3, positioning roller;4, transmission belt;5, rotating shaft;5.1, oil discharge plate;5.2, weight;6, oil tank;7, gear cover lower shell;8, speed reducer;9, driving motor;10, anti-deflection slot;11, anti-deflection block. DETAILED DESCRIPTION

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-6 As shown, a waste oil cleaning device for the large and small gears of a coal mill includes a tensioning roller 1, a driven roller 2, and a positioning roller 3 rotatably connected to the inner side of the gear cover 7 via bearings. A transmission belt 4 is provided on the outer side of the tensioning roller 1, the driven roller 2, and the positioning roller 3. The transmission belt 4 slopes downward from left to right. A drive motor 9 and a reducer 8 are bolted to one side of the gear cover 7. The output shaft of the drive motor 9 is connected to the reducer 8. One end of the tensioning roller 1 passes through the gear cover 7 and is connected to the output shaft of the reducer 8. A tensioning component is provided inside the tensioning roller 1 to keep the transmission belt 4 always taut. A collection component for collecting waste oil is provided on the right side of the transmission belt 4.

[0019] In this embodiment, the tensioning assembly includes multiple telescopic plates 1.2 that are inserted through the circumferential side of the tensioning roller 1, and an arc-shaped plate 1.1 that is bolted to one end of the telescopic plate 1.2 extending out of the tensioning roller 1. The multiple arc-shaped plates 1.1 can be connected end to end to form a ring. Multiple arc grooves are provided on the front and rear sides of the tensioning roller 1, and the multiple arc grooves are arranged in a circular array. Telescopic shafts 1.3 that are slidably connected in the arc grooves are provided on the front and rear sides of the telescopic plate 1.2. The center of the telescopic plate 1.2 and the center of the arc groove array are the center of the front and rear sides of the tensioning roller 1.

[0020] In this embodiment, multiple anti-deflection blocks 11 are bolted to the inner side of the transmission belt 4, and multiple anti-deflection slots 10 are provided on the outer side of the driven roller 2 and the positioning roller 3. The multiple anti-deflection slots 10 are arranged in a ring around the axis of the driven roller 2 and the positioning roller 3. The anti-deflection blocks 11 can be inserted into the anti-deflection slots 10 and the gaps between two adjacent arc plates 1.1.

[0021] In the embodiment, the gear cover lower shell 7 right side is provided with an oil outlet, the collection assembly includes a rotating shaft 5 rotatably connected to the lower end of the oil outlet through a bearing, the rotating shaft 5 circumferential side is welded with an oil discharge plate 5.1 and a weight 5.2, the weight 5.2 is located on the left side of the rotating shaft 5, and the included angle between the weight 5.2 and the lower side of the oil discharge plate 5.1 is an acute angle, the gear cover lower shell 7 right side is provided with an oil drum 6, the oil discharge plate 5.1 is inclined downward from left to right, the left end of the oil discharge plate 5.1 is in contact with the transmission belt 4, and the right end is located above the oil drum 6.

[0022] The working principle of the technical scheme is as follows: the driving motor 9 is started and drives the speed reducer 8 to rotate, and then drives the tensioning drum 1 to rotate clockwise, when the tensioning drum 1 rotates, the arc-shaped slot of the telescopic shaft 1.3 slides away from the center of the tensioning drum 1, and pushes the telescopic plate 1.2 and the arc-shaped plate 1.1 to be in contact with the inner side of the transmission belt 4 and be tensioned, at this time, the anti-deflection clamping block 11 on the inner side of the transmission belt 4 is inserted into the gap between the adjacent two arc-shaped plates 1.1, and drives the driven drum 2, the positioning idler 3 and the whole transmission belt 4 to rotate under the action of the driving motor 9 and the speed reducer 8, the waste oil on the large and small gears can directly drop onto the upper side of the transmission belt 4, and be conveyed to the oil discharge plate 5.1 under the action of the transmission belt 4, and slide along the oil discharge plate 5.1 to the oil drum 6, so as to realize the cleaning and collection of the waste oil of the large and small gears of the coal mill, the oil discharge plate 5.1 is always in contact with the side of the conveying belt under the action of the weight 5.2, so as to ensure the oil discharge effect of the oil discharge plate 5.1, when the oil drum 6 is full, the worker can lift it out by the forklift.

[0023] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A coal mill pinion oil cleaning device, characterized by: The utility model provides a kind of transmission belt tensioning device, including rotationally connected in the tensioning drum of the gear cover lower shell inside side face, driven drum and positioning godet, transmission belt is provided with on the outer side of the tensioning drum, driven drum and positioning godet, the transmission belt is inclined from left to right downward, the gear cover lower shell side is provided with driving motor and speed reducer, the output shaft of the driving motor is connected with speed reducer, one end of the tensioning drum passes through the gear cover lower shell and is connected with the output shaft of speed reducer, the tensioning drum is provided with the tensioning assembly that makes transmission belt always keep tensioned state, the transmission belt right side is provided with the collection assembly for collecting waste oil.

2. A coal mill pinion oil cleaning device as claimed in claim 1, characterized in that: The tensioning assembly includes a plurality of extension plates that are slidingly connected through the circumferential side of the tensioning drum and a plurality of arc-shaped plates that extend from one end of the tensioning drum. The plurality of arc-shaped plates can be connected end-to-end to form a circular ring. The tensioning drum has a plurality of arc grooves on the front and back sides. The plurality of arc grooves are arranged in a ring shape. The front and back sides of the extension plates are provided with extension shafts that are slidingly connected in the arc grooves. The centers of the extension plates and the arc grooves are the centers of the front and back sides of the tensioning drum.

3. A coal mill pinion oil cleaning device as claimed in claim 2, wherein: The inner side of the transmission belt is provided with a plurality of anti-deflection clamping blocks. The outer sides of the driven drum and the positioning godet are provided with a plurality of anti-deflection clamping grooves. The plurality of anti-deflection clamping grooves are arranged in a ring shape around the axes of the driven drum and the positioning godet. The anti-deflection clamping blocks can be inserted into the anti-deflection clamping grooves and the gaps between adjacent arc-shaped plates.

4. A coal mill pinion oil cleaning device as claimed in claim 1, wherein: The right side of the gear cover lower shell is provided with an oil outlet. The collection assembly includes a rotating shaft that is rotationally connected to the lower end of the oil outlet. The circumferential side of the rotating shaft is provided with an oil discharge plate and a weight. The weight is located on the left side of the rotating shaft. The angle between the weight and the lower side of the oil discharge plate is an acute angle. The right side of the gear cover lower shell is provided with an oil drum. The oil discharge plate is inclined from left to right downward. The left end of the oil discharge plate is in contact with the transmission belt, and the right end is located above the oil drum.

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