CN109899504B - Lubrication oil way of gear reduction box of homodromous parallel double-screw extruder - Google Patents
Lubrication oil way of gear reduction box of homodromous parallel double-screw extruder Download PDFInfo
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- CN109899504B CN109899504B CN201910307837.3A CN201910307837A CN109899504B CN 109899504 B CN109899504 B CN 109899504B CN 201910307837 A CN201910307837 A CN 201910307837A CN 109899504 B CN109899504 B CN 109899504B
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- 238000005461 lubrication Methods 0.000 title claims abstract description 24
- 239000003921 oil Substances 0.000 claims abstract description 357
- 239000010687 lubricating oil Substances 0.000 claims abstract description 167
- 239000000498 cooling water Substances 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 239000000314 lubricant Substances 0.000 description 11
- 239000012535 impurity Substances 0.000 description 6
- 241001125879 Gobio Species 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 210000003781 tooth socket Anatomy 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Abstract
The invention discloses a lubrication oil way of a gear reduction box of a homodromous parallel double-screw extruder, which comprises a reduction box body, a middle box body and an output box body, wherein the reduction box body is provided with a rear end oil inlet, a top oil inlet and a bottom oil outlet, the middle box body is provided with a top oil inlet, and the output box body is provided with a top oil inlet and a side oil return opening; the bottom oil-out passes through the ball valve and connects lubricating oil strainer, and lubricating oil pump connection three way connection III, and three way connection III connects three way connection IV, lubricating oil fine filter, and three way connection IV connects antidetonation oil pressure gauge, one way check valve, and one way check valve connects the side oil return opening, and lubricating oil fine filter connects plate heat exchanger, and plate heat exchanger passes through the oil distribution pipeline and connects each oil inlet respectively. The invention can effectively cool the lubricating oil, is convenient for checking and judging the condition of the oil path in real time, and avoids damage to the gear and the bearing of the reduction gearbox.
Description
Technical Field
The invention relates to a double-screw extruder, in particular to a lubrication oil way of a gear reduction box of a homodromous parallel double-screw extruder.
Background
The gear reduction box of the homodromous parallel double-screw extruder has high transmission power and high rotating speed, and a lubricating oil way is required to lubricate and cool gears and bearings effectively so as to ensure continuous, stable and long-term operation of the gear reduction box. The traditional gear reduction box of the parallel double-screw extruder adopts oil immersion type lubrication, a lubricating oil pump pumps out lubricating oil from the bottom of the gear reduction box, the lubricating oil passes through a filter and a multi-pipe type water-cooled heat exchanger, and the lubricating oil returns to the gear reduction box after being cooled. The defects are that: 1. the heat exchange efficiency of the multitube water-cooled heat exchanger is low. 2. The gear and the bearing cannot be effectively forced to be lubricated, and the gear and the bearing are damaged due to oil shortage when the oil level is low. 3. The metal fine powder mixed in the lubricating oil from the gear reduction box cannot be effectively removed, and the service life of the gears and the bearings is influenced. 4. When the oil pressure is low or no oil pressure is generated due to oil shortage, high oil temperature or failure of the lubricating oil pump, a corresponding alarm signal cannot be output, and the gear reduction box cannot be effectively protected. 5. When the filter is blocked by impurities and the oil pressure is too high, a corresponding alarm signal cannot be output to remind an operator to clean the filter immediately, so that the lubricating oil pump is damaged due to the too high oil pressure.
Disclosure of Invention
The invention aims to: aiming at the defects of the traditional gear reduction box lubrication oil way of the parallel double-screw extruder, the invention aims to provide the lubrication oil way of the gear reduction box of the same-direction parallel double-screw extruder, which can effectively cool lubricating oil, is convenient for checking and judging the condition of the oil way in real time and avoids damage of gears and bearings of the reduction box.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a lubrication oil way of a gear reduction box of a homodromous parallel double-screw extruder comprises a reduction box body, a middle box body and an output box body, wherein the front end of the reduction box body is connected with a middle box rear end flange of the middle box body, and the middle box front end flange of the middle box body is connected with the output box rear end flange of the output box body;
The rear end of the reduction gearbox body is provided with a reduction gearbox body rear end oil inlet, the top of the reduction gearbox body is provided with a reduction gearbox body top oil inlet, the bottom of the reduction gearbox body is provided with a reduction gearbox body bottom oil outlet, the top of the middle gearbox body is provided with a middle gearbox body top oil inlet, the top of the output gearbox body is provided with an output gearbox body top oil inlet, and the side surface of the output gearbox body is provided with an output gearbox body side surface oil return port;
an oil outlet at the bottom of the reduction gearbox body is connected with an oil inlet of a ball valve through an oil tank oil outlet pipe, the oil outlet of the ball valve is connected with an oil inlet of a lubricating oil strainer through an oil pipe V, a filter screen and a magnet are arranged in the lubricating oil strainer, the filter screen is used for filtering lubricating oil, and the magnet is used for adsorbing metal fine powder mixed in the lubricating oil;
An oil outlet of the lubricating oil strainer is connected with an oil inlet of the lubricating oil pump through an oil pipe VI, an input shaft of the lubricating oil pump is connected with an output shaft of the motor, an oil outlet of the lubricating oil pump is connected with a first port of a three-way joint III, a second port of the three-way joint III is connected with a first port of a three-way joint IV through a direct pipe, a second port of the three-way joint IV is connected with an oil inlet of an anti-vibration oil pressure gauge, the anti-vibration oil pressure gauge is used for displaying the oil pressure at the oil outlet of the lubricating oil pump, a third port of the three-way joint IV is connected with an oil inlet of a one-way check valve, an oil outlet of the one-way check valve is connected with an inlet of a bypass oil pipe, and an outlet of the bypass oil pipe is connected with an oil return port on the side surface of an output box body;
the third port of the three-way joint III is connected with an oil inlet of the lubricating oil fine filter through an oil connecting pipe, a filter screen is arranged in the lubricating oil fine filter and is used for fine filtering of lubricating oil, the lubricating oil fine filter is provided with a diaphragm pressure switch and a differential pressure transmitter, when the oil pressure difference between the oil inlet of the lubricating oil fine filter and the oil outlet exceeds a set value, the differential pressure transmitter transmits an alarm signal, and when the oil pressure of the oil inlet of the lubricating oil fine filter is lower than the set value, the diaphragm pressure switch transmits the alarm signal;
the oil outlet of the lubricating oil fine filter is connected with the lubricating oil inlet of the plate heat exchanger through an oil pipe VII, the cooling water inlet of the plate heat exchanger is connected with the water outlet of the cooling water coarse filter through a water inlet pipe, a filter screen is arranged in the cooling water coarse filter, the filter screen is used for filtering cooling water, and the water inlet of the cooling water coarse filter is connected with a cooling water joint;
The lubricating oil outlet of the plate heat exchanger is respectively connected with a reduction box body top oil inlet of the reduction box body, a middle box body top oil inlet of the middle box body and an output box body top oil inlet of the output box body through an oil distribution pipeline, the oil distribution pipeline is provided with an impeller type pipeline oil flow indicator, and when lubricating oil passes through the impeller type pipeline oil flow indicator, the lubricating oil pushes an impeller of the impeller type pipeline oil flow indicator to rotate so as to facilitate an operator to observe the flowing condition of the lubricating oil.
Further, the oil distribution pipeline comprises an oil resistant rubber pipe, an oil distributor, an oil pipe III, a two-way joint II, an oil pipe IV, a two-way joint III, a three-way joint II, a bypass oil connecting pipe, a two-way joint IV, an oil pipe II, a three-way joint I, an oil pipe I and a two-way joint I, and the number of oil inlets at the top of an output box body of the output box body is two;
The lubricating oil outlet of the plate heat exchanger is connected with the oil inlet of the oil separator through an oil-resistant rubber pipe, the first oil outlet of the oil separator is connected with the first port of a two-way joint II through an oil pipe III, the second oil outlet of the oil separator is connected with the first port of a two-way joint III through an oil pipe IV, the second port of the two-way joint III is connected with the rear oil inlet of the reduction box, the third oil outlet of the oil separator is connected with the oil inlet of an impeller type pipeline oil flow indicator, the oil outlet of the impeller type pipeline oil flow indicator is connected with the first port of a three-way joint II, the second port of the three-way joint II is connected with the first port of a two-way joint IV through a bypass oil pipe, the second port of the two-way joint IV is connected with the top oil inlet of the middle box, the third port of the three-way joint II is connected with the first port of a three-way joint I, the second port of the three-way joint I is connected with the top of the first output box of the three-way joint I, the third port of the three-way joint I is connected with the second port of the second output box of the two-way joint I, and the second port of the two-way joint I is connected with the top of the second output box of the middle box.
Further, the top of the reduction gearbox body is also provided with an oil filling port, and the oil filling port is provided with an oil filling port cover plate.
Further, the oil filler cover plate is provided with an air filter which is used for keeping the inside of the reduction gearbox body communicated with the outside atmosphere.
Furthermore, an oil drain port is further formed in the bottom of the reduction gearbox body, and is provided with an oil drain port plug.
Further, the gearbox body is fixed on the gearbox mount pad, and the motor mounting panel is installed in the side lower part of gearbox body, and the motor is installed on the motor mounting panel, and the front end flange of the rear end flange joint motor of oil pump mount pad, lubricating oil pump are installed in the front end of oil pump mount pad.
Further, the plate heat exchanger is fixedly arranged on a heat exchanger mounting seat, and the heat exchanger mounting seat is fixedly arranged at the front part of the reduction gearbox mounting seat.
The beneficial effects are that: the lubrication oil way is used for the gear reduction box of the homodromous parallel double-screw extruder, so that the service lives of the gears and the bearings are effectively prolonged; in the case of a cooling aqueous medium of 30 °, the oil temperature is not higher than 40 °; the high-pressure and low-pressure alarming function of the lubricating oil circuit brings convenience for operators to check and judge the working condition of the lubricating oil circuit in real time; an operator can visually observe the condition of the flow of the lubricating oil in the oil pipe and the condition of the output oil pressure of the lubricating oil pump.
Drawings
FIG. 1 is a front view of a lubrication circuit of a gear reduction box of a co-directional parallel double-screw extruder of the present invention;
FIG. 2 is a left side view of a lubrication oil path of a gear reduction box of the co-directional parallel double-screw extruder of the present invention;
FIG. 3 is a top view of the lubrication oil path of the gear reduction box of the co-directional parallel double screw extruder of the present invention;
In the figure: 1-a tapered roller bearing IV; 2-needle bearings I; 3-outputting the box body; 4-a carrier shaft end gear; 5-two-way joint I; 6-needle bearing III; 7-an oil pipe I; 8-a middle gear of the intermediate shaft; 9-a three-way joint I; 10-an oil pipe II; 11-three-way joint II; 12-tandem thrust cylindrical roller bearings; 13-an intermediate box body; 14-impeller type pipeline oil flow indicator; 15-an oil separator; 16-tubing III; 17-two-way joint II;18, a reduction gearbox body; 19-tubing IV; 20-thrust cylindrical roller bearings; 21-aligning roller bearing I; 22-two-way joint III; 23-a motor mounting plate; 24-motor; 25-ball valve; 26-an oil tank oil outlet pipe; 27-a reduction gearbox mounting seat; 28-an oil pump mounting base; 29-oil pipe V; 30-a lubricating oil pump; 31-lubricating oil strainer; 32-oil tube VI; 33-a heat exchanger mount; 34-plate heat exchanger; 35-an oil-resistant rubber tube; 36-tubing VII; 37-anti-vibration oil pressure gauge; 38-connecting pipes directly; 39-three-way joint III; 40-one-way check valve; 41-tee joint IV; 42-connecting oil pipe; 43-bypass tubing; 44-lubricating oil fine filter; 45-diaphragm pressure switch; 46-differential pressure transmitter; 47-an outlet box rear flange; 48-a middle box front end flange; 49-a middle box rear end flange; a 50-A shaft penetrating cover; a 51-A shaft end cap; 52-a lubricant outlet; 53-cooling water inlet; 54-water inlet pipe; 55-cooling water coarse filter; 56-plugging an oil drain port; 57-cooling water joint; 58-cooling water outlet; 59-a lubricant inlet; 60-bypass oil connection; 61-two-way joint IV; 62-an air cleaner; 63-aligning roller bearing II;64-A spindle nose gear; 65-tapered roller bearing II; 66-a carrier shaft head gear; 67-tapered roller bearing III; 68-filler cap plate.
Detailed Description
The invention is further explained below with reference to the drawings.
As shown in fig. 1 to 3, a lubrication oil path of a gear reduction box of a parallel twin-screw extruder of the present invention includes a reduction box body 18, a middle box body 13 and an output box body 3, wherein the front end of the reduction box body 18 is connected with a middle box rear end flange 49 of the middle box body 13, and the middle box front end flange 48 of the middle box body 13 is connected with an output box rear end flange 47 of the output box body 3.
The gearbox 18 is internally provided with an input shaft and a carrier roller head gear 66, the input shaft is supported and installed at the lower part of the gearbox 18 by a bearing, the input shaft drives an A-head gear 64 to rotate by a gear shaft, the A-head gear 64 is supported and installed at the upper part of the gearbox 18 by a thrust cylindrical roller bearing 20, a core-adjusting roller bearing I21 and a core-adjusting roller bearing II63, the thrust cylindrical roller bearing 20 and the core-adjusting roller bearing I21 are close to the rear end of the gearbox 18, the rear end of the gearbox 18 is provided with an A-shaft penetrating cover 50 and an A-shaft end cover 51, the A-shaft penetrating cover 50 is used for fixing the thrust cylindrical roller bearing 20, the A-shaft end cover 51 is used for fixing the core-adjusting roller bearing I21, the carrier roller head gear 66 is supported and installed at the upper part of the gearbox 18 in parallel with the A-head gear 64 by a tapered roller bearing III67 and a tapered roller bearing II65, and the carrier roller bearing 66 is meshed with the A-head gear 64. A tandem thrust cylindrical roller bearing 12 is arranged in the middle box body 13. The output box body 3 is internally provided with a gear 4 at the tail end of the bridge shaft and a gear 8 at the middle part of the bridge shaft, the gear 8 at the middle part of the bridge shaft is supported and installed at the rear part of the output box body 3 by a needle bearing III6, a needle bearing I2 and a tapered roller bearing IV1, and the gear 4 at the tail end of the bridge shaft is supported and installed at the front part of the output box body 3 by the needle bearing I2, the tapered roller bearing IV1 and the needle bearing III 6.
The A shaft end cover 51 at the rear end of the reduction gearbox body 18 is provided with a reduction gearbox body rear end oil inlet, the position of the top of the reduction gearbox body 18 corresponding to the carrier shaft head gear 66 is provided with a reduction gearbox body top oil inlet, the bottom of the reduction gearbox body 18 is provided with a reduction gearbox body bottom oil outlet, the position of the top of the middle gearbox body 13 corresponding to the serial thrust cylindrical roller bearing 12 is provided with a middle gearbox body top oil inlet, the top of the output gearbox body 3 is provided with an output gearbox body top oil inlet, the number of the output gearbox body top oil inlets is two, the position of the first output gearbox body top oil inlet corresponds to the carrier shaft middle gear 8, the position of the second output gearbox body top oil inlet corresponds to the carrier shaft tail end gear 4, and the side of the output gearbox body 3 is provided with an output gearbox body side oil return port.
The oil outlet of the bottom of the reduction box body 18 is connected with the oil inlet of the ball valve 25 through the oil outlet pipe 26 of the oil tank, the oil outlet of the ball valve 25 is connected with the oil inlet of the lubricating oil strainer 31 through the oil pipe V29, and the ball valve 25 can be closed when the lubricating oil way is overhauled, or the lubricating oil strainer 31 and the lubricating oil fine filter 44 are cleaned, or the equipment is transported, so that the lubricating oil in the reduction box body 18 is prevented from exuding. The filter screen and the magnet are arranged in the lubricating oil strainer 31, the filter screen is used for filtering lubricating oil, and the magnet is used for adsorbing metal fine powder mixed in the lubricating oil so as to be beneficial to periodically cleaning the lubricating oil strainer 31 and avoiding the lubricating oil mixed in the metal fine powder from repeatedly lubricating the gears and the bearings, thereby prolonging the service lives of the gears and the bearings.
An oil outlet of the lubricating oil strainer 31 is connected with an oil inlet of the lubricating oil pump 30 through an oil pipe VI 32. The input shaft of the lubricant pump 30 is connected to the output shaft of the motor 24, and the operation of the lubricant pump 30 is driven by the motor 24. The oil outlet of the lubricating oil pump 30 is connected with the first port of the three-way joint III39, the second port of the three-way joint III39 is connected with the first port of the three-way joint IV41 through the direct connection pipe 38, the second port of the three-way joint IV41 is connected with the oil inlet of the anti-vibration oil pressure gauge 37, the anti-vibration oil pressure gauge 37 is used for displaying the oil pressure of the oil outlet of the lubricating oil pump 30 so as to facilitate the observation and judgment of the working state of the lubricating oil pump 30 by operators, the third port of the three-way joint IV41 is connected with the oil inlet of the one-way check valve 40, the oil outlet of the one-way check valve 40 is connected with the inlet of the bypass oil pipe 43, and the outlet of the bypass oil pipe 43 is connected with the oil return port of the side surface of the output box body 3. When the filter screen in the lubricating oil fine filter 44 is blocked by impurities and an operator cannot clean the filter screen in the lubricating oil fine filter 44 in time, so that the oil pressure at the oil outlet of the lubricating oil pump 30 is too high, and when the oil pressure at the oil outlet of the lubricating oil pump 30 is higher than a set value of 7Kg/cm 2, the one-way check valve 40 is opened, and the lubricating oil output by the lubricating oil pump 30 is input into the output box body 3 through the bypass oil pipe 43, so that the aim of preventing damage of the lubricating oil pump 30 caused by the too high output oil pressure is fulfilled; after the one-way check valve 40 is opened, the lubricating oil fed into the inside of the output casing 3 is returned into the reduction casing 18 through the intermediate casing 13.
The third port of the three-way joint III39 is connected with the oil inlet of the lubricating oil fine filter 44 through the oil connecting pipe 42, a filter screen is arranged in the lubricating oil fine filter 44 and is used for fine filtering of lubricating oil so as to ensure the lubricating quality of the circulating lubricating oil on the gears and the bearings; the lubricating oil fine filter 44 is provided with a diaphragm pressure switch 45 and a pressure difference signal generator 46, when the filter screen in the lubricating oil fine filter 44 is blocked by impurities, and the oil pressure difference between the oil inlet and the oil outlet of the lubricating oil fine filter 44 exceeds a set value of 0.35MPa, the pressure difference signal generator 46 sends an alarm signal to remind an operator to clean the filter screen of the lubricating oil fine filter 44 in time; when the oil pressure is higher than the oil temperature due to the lack of lubricating oil in the reduction gearbox body 18 or the blockage of the filter screen of the cooling water and cooling water strainer 55 by impurities, the lubricating oil pump 30 fails, or the filter screen of the lubricating oil strainer 31 is blocked by impurities, and the oil pressure of the oil inlet of the lubricating oil fine filter 44 is lower than a set value, the diaphragm pressure switch 45 sends an alarm signal, and stops the operation of the main motor driving the input shaft of the gear reduction gearbox, so that the aim of protecting the gear reduction gearbox is fulfilled.
The oil outlet of the lubricating oil fine filter 44 is connected with the lubricating oil inlet 59 of the plate heat exchanger 34 through an oil pipe VII36, the cooling water inlet 53 of the plate heat exchanger 34 is connected with the water outlet of the cooling water coarse filter 55 through a water inlet pipe 54, a filter screen is arranged in the cooling water coarse filter 55 and used for filtering cooling water, impurities are prevented from entering the plate heat exchanger 34 to block an inner water flow passage of the plate heat exchanger 34, the heat exchange effect of the plate heat exchanger 34 is affected, and the water inlet of the cooling water coarse filter 55 is connected with the cooling water joint 57. The cooling water enters the internal water flow passage of the plate heat exchanger 34, the lubricating oil enters the internal oil flow passage of the plate heat exchanger 34, the lubricating oil and the cooling water flow in opposite directions in the plate heat exchanger 34, after the heat exchange in the plate heat exchanger 34 is completed, the cooled lubricating oil flows out from the lubricating oil outlet 52 of the plate heat exchanger 34, and the cooling water taking heat out from the cooling water outlet 58 of the plate heat exchanger 34.
The lubricant outlet 52 of the plate heat exchanger 34 is respectively connected with a reduction box top oil inlet of the reduction box 18, a middle box top oil inlet of the middle box 13 and an output box top oil inlet of the output box 3 through a lubricant distribution pipeline, the lubricant distribution pipeline is provided with an impeller type pipeline oil flow indicator 14, and when lubricant passes through the impeller type pipeline oil flow indicator 14, the lubricant pushes an impeller of the impeller type pipeline oil flow indicator 14 to rotate so as to facilitate an operator to observe the flowing condition of the lubricant.
In this embodiment, the oil distribution pipeline includes an oil resistant rubber pipe 35, an oil distributor 15, an oil pipe III16, a two-way joint II17, an oil pipe IV19, a two-way joint III22, a three-way joint II11, a bypass oil connection pipe 60, a two-way joint IV61, an oil pipe II10, a three-way joint I9, an oil pipe I7, and a two-way joint I5, and the number of oil inlets at the top of the reduction gearbox box body of the output gearbox box body 3 is two.
The lubricating oil outlet 52 of the plate heat exchanger 34 is connected with the oil inlet of the oil separator 15 through an oil-resistant rubber pipe 35, the first oil outlet of the oil separator 15 is connected with the first port of the two-way joint II17 through an oil pipe III16, the second port of the two-way joint II17 is connected with the oil inlet at the top of the reduction box body 3, the lubricating oil is filled into the gap-bridge gudgeon gear 66 through the oil inlet at the top of the reduction box body, the lubricating oil is injected into the tooth socket of the gap-bridge gudgeon gear 66, when the gap-bridge gudgeon gear 66 is driven to rotate by the meshed A-gudgeon gear 64, the lubricating oil in the tooth socket of the gap-bridge gudgeon gear 66 is lubricated by the meshed A-gudgeon gear 64, and the lubricating oil is extruded out of the tooth socket of the gap-bridge gudgeon gear 66 by the meshed A-gudgeon gear 64, and is injected to the conical roller bearing III67, the conical roller bearing II65 and the core-adjusting roller bearing II63 arranged at the front axle journal of the A-gudgeon gear 64.
The second oil outlet of the oil separator 15 is connected with the first port of the two-way joint III22 through an oil pipe IV19, the second port of the two-way joint III22 is connected with the rear oil inlet of the reduction gearbox body 3, and lubricating oil is filled into the aligning roller bearing I21 and the thrust cylindrical roller bearing 20 through the rear oil inlet of the reduction gearbox body.
The third oil outlet of the oil separator 15 is connected with the oil inlet of the impeller type pipeline oil flow indicator 14, the oil outlet of the impeller type pipeline oil flow indicator 14 is connected with the first port of the three-way joint II11, the second port of the three-way joint II11 is connected with the first port of the two-way joint IV61 through the bypass oil connecting pipe 60, the second port of the two-way joint IV61 is connected with the middle box top oil inlet of the middle box 13, and lubricating oil is filled into the serial thrust cylindrical roller bearing 12 through the middle box top oil inlet so as to ensure the rolling lubrication effect of the serial thrust cylindrical roller bearing 12.
The third port of the three-way joint II11 is connected with the first port of the three-way joint I9 through an oil pipe II10, the second port of the three-way joint I9 is connected with the top oil inlet of the first output box body of the output box body 3, lubricating oil is filled into the gear socket of the terminal gear 4 of the carrier shaft through the top oil inlet of the first output box body, when the terminal gear 4 of the carrier shaft rotates at a high speed and drives the gears meshed with the terminal gear 4 to rotate reversely, the lubricating oil in the gear socket lubricates the meshed gear surfaces, the gears meshed with the gears extrude the lubricating oil in the gear sockets of the terminal gear 4 of the carrier shaft, and the lubricating oil is sprayed to the support bearing of the intermeshing gears to forcedly lubricate the bearings.
The third port of the three-way joint I9 is connected with the first port of the two-way joint I5 through an oil pipe I7, the second port of the two-way joint I5 is connected with the top oil inlet of the second output box body of the output box body 3, lubricating oil is filled into the middle gear 8 of the passing axle through the top oil inlet of the second output box body, the lubricating oil is filled into the tooth groove of the middle gear 8 of the passing axle, when the middle gear 8 of the passing axle rotates at a high speed and drives the gears meshed with the middle gear to rotate reversely, the lubricating oil in the tooth groove lubricates the meshed tooth surface, the gears meshed with the middle gear extrude the lubricating oil in the tooth groove of the middle gear 8 of the passing axle, and the lubricating oil is sprayed to the support bearing of the intermeshing gears to forcedly lubricate the bearings.
In this embodiment, the top of the reduction gearbox 18 is further provided with a fuel filler, and the fuel filler is provided with a fuel filler cover 68. Opening the filler cap 68 allows new lubricant to be filled into the reduction gearbox housing 18 from the upper filler port of the reduction gearbox housing 18.
The filler cover 68 is provided with an air cleaner 62, and the air cleaner 62 is used for keeping the interior of the reduction gearbox 18 open to the outside atmosphere. So as to avoid the formation of atmospheric pressure difference between the inside of the reduction gearbox 18 and the outside atmosphere when the lubrication oil way works, so that negative atmospheric pressure difference can not be formed in the reduction gearbox 18, and the smoothness of the lubrication oil way during working is ensured.
The bottom of the reduction gearbox body 18 is also provided with an oil drain port, and the oil drain port is provided with an oil drain port plug 56. When the lubrication oil in the gear box needs to be replaced, the oil drain plug 56 is opened to drain the used lubrication oil in the gear box.
Preferably, the reduction gearbox housing 18 is fixed on a reduction gearbox mounting seat 27, the motor mounting plate 23 is mounted on the lower side of the reduction gearbox housing 18, the motor 24 is mounted on the motor mounting plate 23, the rear end flange of the oil pump mounting seat 28 is connected with the front end flange of the motor 24, and the lubricating oil pump 30 is mounted at the front end of the oil pump mounting seat 28.
The plate heat exchanger 34 is fixedly mounted on the heat exchanger mount 33, and the heat exchanger mount 33 is fixedly mounted on the front portion of the reduction box mount 27.
When the gear reduction box of the homodromous parallel double-screw extruder works, an output shaft of the motor 24 drives the lubricating oil pump 30 to operate through an input shaft connected with the lubricating oil pump 30, the lubricating oil pump 30 sucks lubricating oil in the reduction box body 18 into an inner cavity of the lubricating oil pump 30 through an oil tank oil outlet pipe 26, a ball valve 25, an oil pipe V29, a lubricating oil strainer 31, an oil pipe VI32 and an oil inlet of the lubricating oil pump 30, the lubricating oil is output from an oil outlet of the lubricating oil pump 30 after being pressurized by the inner cavity of the lubricating oil pump 30, and the pressurized lubricating oil is split by a three-way joint III 39; one path of lubricating oil is led to the position of the three-way joint IV41 through the direct pipe 38, and the vibration-resistant oil pressure gauge 37 connected with the three-way joint IV41 displays the oil pressure at the oil outlet of the lubricating oil pump 30; the one-way check valve 40 connected with the three-way joint IV41, the one-way check valve 40 is in a closed state under the working condition that the oil pressure at the oil outlet of the lubricating oil pump 30 is lower than or equal to 7kg/cm 2, and when the oil pressure at the oil outlet of the lubricating oil pump 30 is higher than 7kg/cm 2, the one-way check valve 40 is opened, and the lubricating oil output by the lubricating oil pump 30 is input into the interior of the output box body 3 through the bypass oil pipe 43; the other path of lubricating oil is communicated to an oil inlet of the lubricating oil fine filter 44 through the oil connecting pipe 42, and the lubricating oil enters an internal oil duct of the plate heat exchanger 34 through an oil outlet of the lubricating oil fine filter 44 through an oil pipe VII36 and a lubricating oil inlet 59 of the plate heat exchanger 34 after being filtered; when the oil pressure difference between the oil inlet and the oil outlet of the lubricating oil fine filter 44 exceeds 0.35MPa, the pressure difference signaling device 46 sends out an alarm signal; when the oil pressure at the oil inlet of the lubricating oil fine filter 44 is lower than 0.14MPa or no oil pressure, the diaphragm pressure switch 45 gives an alarm signal and stops the operation of the main motor driving the input shaft of the gear reduction box.
The external cooling water enters the internal water passage of the plate heat exchanger 34 through the cooling water joint 57, the cooling water strainer 55, the water inlet pipe 54 and the cooling water inlet 53 of the plate heat exchanger 34, the lubricating oil and the cooling water flow in opposite directions inside the plate heat exchanger 34, after the heat exchange is completed inside the plate heat exchanger 34, the cooled lubricating oil flows out from the lubricating oil outlet 52 of the plate heat exchanger 34, and the cooling water taking heat flows out from the cooling water outlet 58 of the plate heat exchanger 34.
The cooled lubricating oil enters the oil separator 15 through the lubricating oil outlet 52, the oil-resistant rubber tube 35 and the oil inlet of the oil separator 15, and the lubricating oil is firstly divided into three paths through the oil separator 15, wherein:
The first path of lubricating oil enters the upper part of the reduction gearbox body 18 through an oil inlet at the top of the reduction gearbox body 18 through an oil pipe III16, a two-way joint II17 and fills the lubricating oil into the gap shaft head gear 66;
the second path of lubricating oil enters the rear end of the reduction gearbox body 18 through an oil pipe IV19, a two-way joint III22 and an oil inlet at the rear end of the reduction gearbox body 18, and lubricating oil is filled into the aligning roller bearing I21 and the thrust cylindrical roller bearing 20;
The third path of lubricating oil is divided into two paths through a three-way joint II11, wherein one path of lubricating oil enters the upper part of the middle box 13 through a bypass oil connecting pipe 60, a two-way joint IV61 and a middle box top oil inlet of the middle box 13, the serial thrust cylindrical roller bearing 12 is filled with lubricating oil, the other path of lubricating oil is divided into two paths through an oil pipe II10 and a three-way joint I9, one path of lubricating oil enters the upper part of the output box 3 through a first output box top oil inlet of the output box 3 and is in a rear position, the middle gear 8 of a bridge shaft is filled with lubricating oil, the other path of lubricating oil enters the upper part of the output box 3 through an oil pipe I7, a two-way joint I5 and a second output box top oil inlet of the output box 3, and the bridge shaft tail end gear 4 is filled with lubricating oil.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (6)
1. The lubrication oil way of the gear reduction box of the homodromous parallel double-screw extruder comprises a reduction box body (18), a middle box body (13) and an output box body (3), wherein the front end of the reduction box body (18) is connected with a middle box rear end flange (49) of the middle box body (13), and the middle box front end flange (48) of the middle box body (13) is connected with an output box rear end flange (47) of the output box body (3); the method is characterized in that:
The rear end of the reduction gearbox body (18) is provided with a reduction gearbox body rear end oil inlet, the top of the reduction gearbox body (18) is provided with a reduction gearbox body top oil inlet, the bottom of the reduction gearbox body (18) is provided with a reduction gearbox body bottom oil outlet, the top of the middle gearbox body (13) is provided with a middle gearbox body top oil inlet, the top of the output gearbox body (3) is provided with an output gearbox body top oil inlet, and the side surface of the output gearbox body (3) is provided with an output gearbox body side surface oil return port;
An oil outlet at the bottom of the reduction gearbox body is connected with an oil inlet of a ball valve (25) through an oil tank oil outlet pipe (26), the oil outlet of the ball valve (25) is connected with an oil inlet of a lubricating oil strainer (31) through an oil pipe V (29), a filter screen and a magnet are arranged in the lubricating oil strainer (31), the filter screen is used for filtering lubricating oil, and the magnet is used for adsorbing metal fine powder mixed in the lubricating oil;
An oil outlet of the lubricating oil strainer (31) is connected with an oil inlet of the lubricating oil pump (30) through an oil pipe VI (32), an input shaft of the lubricating oil pump (30) is connected with an output shaft of the motor (24), an oil outlet of the lubricating oil pump (30) is connected with a first port of a three-way joint III (39), a second port of the three-way joint III (39) is connected with a first port of a three-way joint IV (41) through a straight connecting pipe (38), a second port of the three-way joint IV (41) is connected with an oil inlet of an anti-vibration oil pressure gauge (37), the anti-vibration oil pressure gauge (37) is used for displaying oil pressure at the oil outlet of the lubricating oil pump (30), a third port of the three-way joint IV (41) is connected with an oil inlet of a one-way check valve (40), an oil outlet of the one-way check valve (40) is connected with an inlet of a bypass oil pipe (43), and an outlet of the bypass oil pipe (43) is connected with an oil return port on the side surface of an output box body.
The third port of the three-way joint III (39) is connected with an oil inlet of a lubricating oil fine filter (44) through an oil connecting pipe (42), a filter screen is arranged in the lubricating oil fine filter (44), the filter screen is used for fine filtering lubricating oil, the lubricating oil fine filter (44) is provided with a diaphragm pressure switch (45) and a differential pressure transmitter (46), when the oil pressure difference between the oil inlet of the lubricating oil fine filter (44) and the oil outlet exceeds a set value, the differential pressure transmitter (46) transmits an alarm signal, and when the oil pressure of the oil inlet of the lubricating oil fine filter (44) is lower than the set value or no oil pressure, the diaphragm pressure switch (45) transmits the alarm signal;
an oil outlet of the lubricating oil fine filter (44) is connected with a lubricating oil inlet (59) of the plate heat exchanger (34) through an oil pipe VII (36), a cooling water inlet (53) of the plate heat exchanger (34) is connected with a water outlet of a cooling water coarse filter (55) through a water inlet pipe (54), a filter screen is arranged in the cooling water coarse filter (55) and is used for filtering cooling water, and a water inlet of the cooling water coarse filter (55) is connected with a cooling water joint (57);
The lubricating oil outlet (52) of the plate heat exchanger (34) is respectively connected with a reduction gearbox box body top oil inlet of the reduction gearbox box body (18), a middle gearbox box body top oil inlet of the middle gearbox box body (13) and an output gearbox box body top oil inlet of the output gearbox box body (3) through an oil distribution pipeline, the oil distribution pipeline is provided with an impeller type pipeline oil flow indicator (14), and when lubricating oil passes through the impeller type pipeline oil flow indicator (14), the lubricating oil pushes an impeller of the impeller type pipeline oil flow indicator (14) to rotate so as to facilitate an operator to observe the flowing condition of the lubricating oil;
the oil distribution pipeline comprises an oil resistant rubber pipe (35), an oil distributor (15), an oil pipe III (16), a two-way joint II (17), an oil pipe IV (19), a two-way joint III (22), a three-way joint II (11), a bypass oil connecting pipe (60), a two-way joint IV (61), an oil pipe II (10), a three-way joint I (9), an oil pipe I (7) and a two-way joint I (5), wherein the number of oil inlets at the top of an output box body of the output box body (3) is two;
The lubricating oil outlet (52) of the plate heat exchanger (34) is connected with the oil inlet of the oil distributor (15) through an oil-resistant rubber pipe (35), the first oil outlet of the oil distributor (15) is connected with the first port of a two-way joint II (17) through an oil pipe III (16), the second port of the two-way joint II (17) is connected with the oil inlet at the top of a reduction gearbox box body (18), the second oil outlet of the oil distributor (15) is connected with the first port of a two-way joint III (22) through an oil pipe IV (19), the second port of the two-way joint III (22) is connected with the oil inlet at the rear end of the reduction gearbox box body (18), the third oil outlet of the oil distributor (15) is connected with the oil inlet of an impeller type pipeline oil flow indicator (14), the oil outlet of the impeller type pipeline oil flow indicator (14) is connected with the first port of a three-way joint II (11), the second port of the three-way joint II (11) is connected with the first port of a two-way joint IV (61) through a bypass oil pipe (60), the second port of the two-way joint IV (61) is connected with the first port of a middle box body (13) and the second port of the three-way joint II (9) is connected with the top of the three-way joint box body (9), the third port of the three-way joint I (9) is connected with the first port of the two-way joint I (5) through the oil pipe I (7), and the second port of the two-way joint I (5) is connected with the top oil inlet of the second output box body of the output box body (3).
2. The lubrication oil path of a gear reduction box of a co-directional parallel double-screw extruder according to claim 1, wherein: the top of the reduction gearbox body (18) is also provided with an oil filler, and the oil filler is provided with an oil filler cover plate (68).
3. The lubrication oil path of a gear reduction box of a co-directional parallel double-screw extruder according to claim 2, wherein: an air filter (62) is arranged on the oil filler cover plate (68), and the air filter (62) is used for keeping the interior of the reduction gearbox body (18) communicated with the outside atmosphere.
4. The lubrication oil path of a gear reduction box of a co-directional parallel double-screw extruder according to claim 2, wherein: an oil drain port is further formed in the bottom of the reduction gearbox body (18), and an oil drain port plug (56) is arranged on the oil drain port.
5. The lubrication oil path of a gear reduction box of a co-directional parallel double-screw extruder according to claim 1, wherein: the gearbox body (18) is fixed on a gearbox mounting seat (27), the motor mounting plate (23) is mounted on the lower side of the gearbox body (18), the motor (24) is mounted on the motor mounting plate (23), the rear end flange of the oil pump mounting seat (28) is connected with the front end flange of the motor (24), and the lubricating oil pump (30) is mounted at the front end of the oil pump mounting seat (28).
6. The lubrication oil path of a gear reduction box of a co-directional parallel double-screw extruder according to claim 1, wherein: the plate heat exchanger (34) is fixedly arranged on the heat exchanger mounting seat (33), and the heat exchanger mounting seat (33) is fixedly arranged at the front part of the reduction gearbox mounting seat (27).
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| CN112013100B (en) * | 2020-08-03 | 2021-06-15 | 北京捷杰西石油设备有限公司 | Micro-positive pressure sealing structure at upper end of top drive spindle and micro-positive pressure establishing method |
| CN114753959B (en) * | 2022-05-17 | 2023-09-12 | 金陵科技学院 | Self-lubricating water turbine power generation device based on breakwater |
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| CN202200530U (en) * | 2011-07-27 | 2012-04-25 | 南京盖因特机电有限责任公司 | Lubricating system of co-rotating parallel twin-screw extruder |
| CN209875916U (en) * | 2019-04-17 | 2019-12-31 | 南京杰恩特机电有限公司 | Lubricating oil path of gear reduction box of co-rotating parallel double-screw extruder |
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| EP2944448B1 (en) * | 2014-05-13 | 2019-09-25 | Coperion GmbH | Gearbox assembly for a twin screw extruder and method for commissioning a plant |
| CN204553793U (en) * | 2015-03-30 | 2015-08-12 | 湖北威能达传动有限责任公司 | A kind of injection machine Special gear reducer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202200530U (en) * | 2011-07-27 | 2012-04-25 | 南京盖因特机电有限责任公司 | Lubricating system of co-rotating parallel twin-screw extruder |
| CN209875916U (en) * | 2019-04-17 | 2019-12-31 | 南京杰恩特机电有限公司 | Lubricating oil path of gear reduction box of co-rotating parallel double-screw extruder |
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