Waste oil recovery device for small diesel generating set

Abstract

The utility model relates to the technical field of waste oil recovery devices, in particular to a waste oil recovery device for a small-sized diesel generating set, which discharges waste oil in the small-sized diesel generating set into a heating mechanism by starting a feeding mechanism, heats the waste oil by starting the heating mechanism to evaporate moisture in the waste oil, and recovers the waste oil in the small-sized diesel generating set. Harmful substances in the water vapor are decomposed and filtered through the decomposition mechanism, and after water in the waste oil is discharged, the filtering mechanism is started to discharge the waste oil and filter oil residues in the waste oil, so that the practicability of the equipment is improved; comprising a moving mechanism; the device further comprises a feeding mechanism, a heating mechanism, an exhaust mechanism, a decomposition mechanism and a filtering mechanism, the feeding mechanism, the heating mechanism, the exhaust mechanism and the decomposition mechanism are all installed on the moving mechanism, the heating mechanism is located on the right side of the feeding mechanism, and the decomposition mechanism is located on the right side of the heating mechanism and on the left side of the exhaust mechanism; and the filtering mechanism is mounted in the heating mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of waste oil recovery device, in particular to a kind of small diesel generating set waste oil recovery device. BACKGROUND

[0002] Small diesel engine waste oil recovery device is a kind of equipment specially designed for recycling and processing waste oil generated by diesel engine;Such devices have important significance in environmental protection and resource recycling, which can reduce the pollution of waste oil to the environment and improve the use efficiency of resources through recycling.

[0003] For example, the waste oil recovery device disclosed in the utility model patent with application number CN202323376821.9 is representative of one type of prior art, which mainly includes a vehicle body, a storage barrel, a pump body, a support seat, a conveying box, a second valve and a motor, etc. The waste oil is recovered by the cooperation of the vehicle body, the storage barrel, the pump body, the support seat, the conveying box, the second valve and the motor, etc.

[0004] After the waste oil is recovered, there is a certain amount of water in the waste oil, and the traditional waste oil recovery device is difficult to separate the water in the waste oil, and the waste oil contains a certain amount of oil residue, which affects the subsequent use of the waste oil. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a small diesel generating set waste oil recovery device, which can discharge the waste oil in the small diesel generating set to the heating mechanism by starting the feeding mechanism, heat the waste oil by starting the heating mechanism, evaporate the water in the waste oil, decompose and filter the harmful substances in the water vapor by starting the decomposition mechanism, discharge the water in the waste oil, start the filtering mechanism, discharge the waste oil, filter the oil residue in the waste oil, and improve the practicability of the equipment.

[0006] The utility model discloses a waste oil recovery device for a small diesel generator set, comprising a mobile mechanism; a feeding mechanism, a heating mechanism, an exhaust mechanism, a decomposition mechanism and a filtering mechanism, wherein the feeding mechanism, the heating mechanism, the exhaust mechanism and the decomposition mechanism are all mounted on the mobile mechanism, the heating mechanism is located on the right side of the feeding mechanism, the decomposition mechanism is located on the right side of the heating mechanism, the decomposition mechanism is located on the left side of the exhaust mechanism, and the filtering mechanism is mounted inside the heating mechanism; the mobile mechanism is connected to a traction vehicle, the device is moved to the small diesel generator set, the feeding mechanism is connected to a waste oil discharge port of the small diesel generator set, the feeding mechanism is started to discharge the waste oil in the small diesel generator set into the heating mechanism, the heating mechanism is started to heat the waste oil to evaporate the water in the waste oil, and the exhaust mechanism is started to discharge the water vapor in the heating mechanism into the decomposition mechanism, the decomposition mechanism decomposes and filters the harmful substances in the water vapor, and after the water in the waste oil is discharged, the filtering mechanism is started to discharge the waste oil, and the oil residue in the waste oil is filtered and discharged through the filtering mechanism, thereby improving the practicality of the device.

[0007] Preferably, the moving mechanism includes a base plate, multiple rollers, a connecting member and a connecting bolt, the top ends of the multiple rollers are respectively installed on the bottom end of the base plate, the left end of the connecting member is installed on the right end of the base plate, and the connecting bolt is installed on the connecting member; the connecting member and the traction vehicle are connected via the connecting bolt, and the multiple rollers are rotated respectively with the help of the traction vehicle to move the base plate to the small diesel generator set, thereby improving the practicality of the equipment.

[0008] Preferably, the feeding mechanism includes a connecting head, a first pipeline, an oil pump, a second pipeline and a first bracket, the output end of the connecting head is connected to the input end of the first pipeline, the output end of the first pipeline is connected to the input end of the oil pump, the output end of the oil pump is connected to the input end of the second pipeline, the input end of the second pipeline is connected to the heating mechanism and is located above the filtering mechanism, and the bottom end of the oil pump is installed on the top end of the first bracket; it is connected to the waste oil discharge end of the small generator set through the connecting head, and the waste oil in the small diesel generator set is discharged through the first pipeline to the second pipeline by starting the oil pump, and the first bracket supports the oil pump to improve the practicality of the equipment.

[0009] Preferably, the heating mechanism includes a heating barrel, a heater, a cleaning brush, an oil drain pipe and multiple supporting legs, the heater is installed on the outer wall of the heating barrel, the rear end of the cleaning brush is installed on the outer wall of the heating barrel, the front end of the cleaning brush is in contact with the filtering mechanism, the input end of the oil drain pipe is connected to the outer wall of the heating barrel, a valve is provided on the input end of the oil drain pipe, and the bottom end of the heating barrel is installed on the top of the multiple supporting legs; the waste oil is discharged into the filtering mechanism, and the waste oil is heated by starting the heater to evaporate the moisture in the waste oil to form water vapor. The filtered waste oil is discharged through the oil drain pipe, and the cleaning brush cleans the surface of the filtering mechanism. The multiple supporting legs support the heating barrel respectively, thereby improving the practicality of the equipment.

[0010] Preferably, the decomposition mechanism comprises a decomposition barrel, a plurality of ultraviolet lamps, a mounting net, a plurality of catalyst carriers, a baffle plate, a filter plate, a third pipeline and an exhaust pipe, a liquid level sensor is arranged at the inner lower part of the decomposition barrel, the plurality of ultraviolet lamps are respectively arranged on the inner wall of the decomposition barrel, the mounting net is arranged on the inner wall of the decomposition barrel and is located below the plurality of ultraviolet lamps, the bottom ends of the plurality of catalyst carriers are respectively arranged on the top ends of the mounting net, the baffle plate and the filter plate are both arranged on the inner wall of the decomposition barrel, the baffle plate is located below the mounting net, the filter plate is located below the baffle plate, the input end of the third pipeline is connected with the outer wall of the decomposition barrel, a valve is arranged on the input end of the third pipeline, the input end of the exhaust pipe is connected with the top end of the heating barrel, and the output end of the exhaust pipe is connected with the top of the decomposition barrel; the water vapor is discharged into the decomposition barrel through the exhaust pipe, the mounting net supports the plurality of catalyst carriers, the harmful substances in the water vapor are decomposed through the cooperation of the plurality of ultraviolet lamps and the plurality of catalyst carriers, the decomposed gas and water droplets are discharged into the filter plate through the baffle plate, the filter plate filters the gas and water droplets, the condensed water after filtration reaches the liquid level sensor and is discharged through the fifth pipeline, and the practicability of the equipment is improved.

[0011] Preferably, the exhaust mechanism comprises a fourth pipeline, a vacuum pump and a fifth pipeline, the input end of the fourth pipeline is connected with the outer wall of the decomposition barrel, the output end of the fourth pipeline is connected with the input end of the vacuum pump, and the output end of the vacuum pump is connected with the input end of the fifth pipeline; the water vapor in the heating barrel is discharged into the decomposition mechanism through the exhaust pipe by starting the vacuum pump, and the water vapor is decomposed by the decomposition mechanism, the gas in the decomposition barrel is discharged through the fourth pipeline and the fifth pipeline, and the practicability of the equipment is improved.

[0012] Preferably, the filter mechanism comprises a motor, a rotating shaft, a plurality of connecting rods, a filter barrel and a bearing, the top end of the rotating shaft is connected with the output end of the motor, the side ends of the plurality of connecting rods are respectively arranged on the lower part of the rotating shaft, the other side ends of the plurality of connecting rods are respectively arranged on the inner wall of the filter barrel, a valve is arranged on the output end of the filter barrel, the inner ring of the bearing is arranged on the output end of the filter barrel, and the outer ring of the bearing is arranged on the bottom end of the heating barrel; the rotating shaft is rotated by starting the motor, the filter barrel is rotated through the plurality of connecting rods, the waste oil in the filter barrel is discharged, and the oil residue is discharged through the filter barrel, and the practicability of the equipment is improved.

[0013] The utility model discloses the beneficial effect compared with prior art is: through the mobile mechanism with the towing vehicle connection, move the equipment to the small diesel generating set, through the feed mechanism and the waste oil of small diesel engine group export connect, through starting the feed mechanism and export the waste oil in small diesel engine group to the heating mechanism, through starting the heating mechanism to the waste oil heating, make the water content in waste oil evaporate, start exhaust mechanism simultaneously and export the water vapor in heating mechanism to the decomposition mechanism, through the decomposition mechanism to the harmful substance in water vapor decomposes and filters, after the water content in waste oil is exported, starts the filter mechanism, exports to the waste oil, filters the oil residue in waste oil, and the oil residue is exported through the filter mechanism, improves the practicality of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the axonometric section view of the utility model;

[0015] Figure 2 It is the mobile mechanism axonometric schematic view of the utility model;

[0016] Figure 3 It is the feed mechanism axonometric schematic view of the utility model;

[0017] Figure 4 It is the heating mechanism axonometric section view of the utility model;

[0018] Figure 5 It is the decomposition mechanism axonometric section view of the utility model;

[0019] Figure 6 It is the exhaust mechanism axonometric schematic view of the utility model;

[0020] Figure 7 It is the filter mechanism axonometric schematic view of the utility model.

[0021] Mark in drawing: 01, mobile mechanism;11, bottom plate;12, gyro wheel;13, connecting piece;14, connecting bolt;02, feed mechanism;21, connecting head;22, first pipeline;23, oil pump;24, second pipeline;25, first support;03, heating mechanism;31, heating bucket;32, heater;33, cleaning brush;34, oil discharge pipe;35, support leg;04, decomposition mechanism;41, decomposition bucket;42, ultraviolet lamp;43, installation net;44, catalyst carrier;45, baffle;46, filter plate;47, third pipeline;48, exhaust pipe;05, exhaust mechanism;51, fourth pipeline;52, vacuum pump;53, fifth pipeline;06, filter mechanism;61, motor;62, rotation axis;63, connecting rod;64, filter bucket;65, bearing. DETAILED DESCRIPTION

[0022] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Embodiments

[0023] As Figure 1 shown, a small diesel generating set waste oil recovery device includes a moving mechanism 01; further includes feeding mechanism 02, heating mechanism 03, exhaust mechanism 05, decomposition mechanism 04 and filter mechanism 06, feeding mechanism 02, heating mechanism 03, exhaust mechanism 05 and decomposition mechanism 04 are installed on moving mechanism 01, heating mechanism 03 is located at the right side of feeding mechanism 02, decomposition mechanism 04 is located at the right side of heating mechanism 03, decomposition mechanism 04 is located at the left side of exhaust mechanism 05, filter mechanism 06 is installed in heating mechanism 03,

[0024] Through the connection of moving mechanism 01 and towing vehicle, the equipment is moved to small diesel generating set, through the connection of feeding mechanism 02 and the waste oil discharge port of small diesel engine set, through the start of feeding mechanism 02, the waste oil in small diesel engine set is discharged to heating mechanism 03, through the start of heating mechanism 03, the water in waste oil is evaporated, at the same time, exhaust mechanism 05 is started to discharge the water vapor in heating mechanism 03 to decomposition mechanism 04, harmful substances in water vapor are decomposed and filtered through decomposition mechanism 04, after the water in waste oil is discharged, filter mechanism 06 is started to discharge waste oil, and the oil residue in waste oil is filtered, the oil residue is discharged through filter mechanism 06, the practicability of the equipment is improved;

[0025] As Figure 2 shown, moving mechanism 01 includes a bottom plate 11, a plurality of rollers 12, a connecting piece 13 and a connecting bolt 14, the top ends of the plurality of rollers 12 are respectively installed at the bottom end of the bottom plate 11, the left end of the connecting piece 13 is installed at the right end of the bottom plate 11, and the connecting bolt 14 is installed on the connecting piece 13.

[0026] As Figure 3 shown, feeding mechanism 02 includes a connecting head 21, a first pipeline 22, an oil pump 23, a second pipeline 24 and a first support 25, the output end of the connecting head 21 is connected with the input end of the first pipeline 22, the output end of the first pipeline 22 is connected with the input end of the oil pump 23, the output end of the oil pump 23 is connected with the input end of the second pipeline 24, the input end of the second pipeline 24 is connected with heating mechanism 03 and located above filter mechanism 06, and the bottom end of the oil pump 23 is installed at the top end of the first support 25.

[0027] As Figure 4As shown, the heating mechanism 03 includes a heating barrel 31, a heater 32, a cleaning brush 33, an oil drain pipe 34 and a plurality of support legs 35, the heater 32 is installed on the outer wall of the heating barrel 31, the rear end of the cleaning brush 33 is installed on the outer wall of the heating barrel 31, the front end of the cleaning brush 33 is in contact with the filtering mechanism 06, the input end of the oil drain pipe 34 is connected with the outer wall of the heating barrel 31, a valve is arranged on the input end of the oil drain pipe 34, and the bottom end of the heating barrel 31 is installed at the top end of the plurality of support legs 35; the connecting piece 13 is connected with the towing vehicle through the connecting bolt 14, the plurality of rollers 12 are rotated respectively by the power of the towing vehicle, the bottom plate 11 is moved to the small diesel generating set, is connected with the waste oil discharge end of the small diesel generating set through the connecting head 21, the waste oil in the small diesel generating set is discharged through the first pipeline 22 to the second pipeline 24 by starting the oil pump 23, the oil pump 23 is supported by the first support 25, the waste oil is discharged into the filtering mechanism 06, the waste oil is heated by starting the heater 32, the water in the waste oil is evaporated to form water vapor, the filtered waste oil is discharged through the oil drain pipe 34, the surface of the filtering mechanism 06 is cleaned by the cleaning brush 33, and the heating barrel 31 is supported by the plurality of support legs 35, thereby improving the practicability of the equipment. Embodiment

[0028] As shown in Figure 5 and Figure 6 on the basis of embodiment 1 further includes a decomposition mechanism 04 and an exhaust mechanism 05, the decomposition mechanism 04 includes a decomposition barrel 41, a plurality of ultraviolet lamps 42, a mounting net 43, a plurality of catalyst carriers 44, a baffle plate 45, a filter plate 46, a third pipeline 47 and an exhaust pipe 48, a liquid level sensor is arranged at the inner lower portion of the decomposition barrel 41, the plurality of ultraviolet lamps 42 are respectively installed on the inner wall of the decomposition barrel 41, the mounting net 43 is installed on the inner wall of the decomposition barrel 41, the mounting net 43 is located below the plurality of ultraviolet lamps 42, the bottom end of the plurality of catalyst carriers 44 is respectively installed at the top end of the mounting net 43, the baffle plate 45 and the filter plate 46 are both installed on the inner wall of the decomposition barrel 41, the baffle plate 45 is located below the mounting net 43, the filter plate 46 is located below the baffle plate 45, the input end of the third pipeline 47 is connected with the outer wall of the decomposition barrel 41, a valve is arranged on the input end of the third pipeline 47, the input end of the exhaust pipe 48 is connected with the top end of the heating barrel 31, and the output end of the exhaust pipe 48 is connected with the top of the decomposition barrel 41; the exhaust mechanism 05 includes a fourth pipeline 51, a vacuum pump 52 and a fifth pipeline 53, the input end of the fourth pipeline 51 is connected with the outer wall of the decomposition barrel 41, the output end of the fourth pipeline 51 is connected with the input end of the vacuum pump 52, and the output end of the vacuum pump 52 is connected with the input end of the fifth pipeline 53;

[0029] The water vapor is discharged into the decomposition barrel 41 through the exhaust pipe 48, the mesh 43 supports the plurality of catalyst carriers 44, the harmful substances in the water vapor are decomposed through the cooperation of the plurality of ultraviolet lamps 42 and the plurality of catalyst carriers 44, the decomposed gas and water droplets are discharged into the filter plate 46 through the baffle 45, the filter plate 46 filters them, the condensed water after the filtration reaches the liquid level sensor and is discharged through the fifth pipeline 47, the water vapor in the heating barrel 31 is discharged into the decomposition mechanism 04 through the exhaust pipe 48 by starting the vacuum pump 52, the water vapor is decomposed through the decomposition mechanism 04, the gas in the decomposition barrel is discharged through the fourth pipeline 51 to the fifth pipeline 53, and the practicability of the equipment is improved. Embodiment

[0030] As shown in Figure 7 the embodiment 1, the filtration mechanism 06 is further included, the filtration mechanism 06 includes the motor 61, the rotating shaft 62, the plurality of connecting rods 63, the filtration barrel 64 and the bearing 65, the top end of the rotating shaft 62 is connected with the output end of the motor 61, the side ends of the plurality of connecting rods 63 are respectively installed on the lower part of the rotating shaft 62, the other side ends of the plurality of connecting rods 63 are respectively installed on the inner wall of the filtration barrel 64, the valve is arranged on the output end of the filtration barrel 64, the inner ring of the bearing 65 is installed on the output end of the filtration barrel 64, and the outer ring of the bearing 65 is installed on the bottom end of the heating barrel 31.

[0031] The rotating shaft 62 is rotated by starting the motor 61, the filtration barrel 64 is rotated through the plurality of connecting rods 63, the waste oil in the filtration barrel 64 is discharged, the oil residue is discharged through the filtration barrel 64, and the practicability of the equipment is improved.

[0032] As shown in Figures 1 to 7As shown, the small diesel generating set waste oil recovery device, when working, first makes the connecting piece 13 and the towing vehicle connect through the connecting bolt 14, and makes a plurality of rollers 12 rotate respectively through the power assistance of the towing vehicle, moves the bottom plate 11 to the small diesel generating set, then connects through the connecting head 21 and the waste oil discharge end of the small generator set, and makes the waste oil in the small diesel generating set discharge through the first pipeline 22 to the second pipeline 24 through starting the oil pump 23, the first support 25 supports the oil pump 23, then the waste oil is discharged into the filtering mechanism 06, the waste oil is heated through starting the heater 32, the water in the waste oil is evaporated to form water vapor, the filtered waste oil is discharged through the oil discharge pipe 34, the cleaning brush 33 cleans the surface of the filtering mechanism 06, a plurality of supporting legs 35 support the heating barrel 31 respectively, then the water vapor is discharged into the decomposition barrel 41 through the exhaust pipe 48, the installation net 43 supports a plurality of catalyst carriers 44, the harmful substances in the water vapor are decomposed through cooperation of the plurality of ultraviolet lamps 42 and the plurality of catalyst carriers 44, the decomposed gas and water drops are discharged into the filter plate 46 through the baffle 45, are filtered through the filter plate 46, and the condensed water after filtering reaches the liquid level sensor and is discharged through the fifth pipeline 47, then the water vapor in the heating barrel 31 is discharged into the decomposition mechanism 04 through the exhaust pipe 48 through starting the vacuum pump 52, is decomposed through the decomposition mechanism 04, the gas in the decomposition barrel is discharged through the fourth pipeline 51 to the fifth pipeline 53, finally the rotating shaft 62 is rotated through starting the motor 61, the filtering barrel 64 is rotated through the plurality of connecting rods 63, the waste oil in the filtering barrel 64 is discharged, and the oil residue is discharged through the filtering barrel 64, so that the practicability of the equipment is improved.

[0033] The oil pump 23, the heater 32, the ultraviolet lamp 42, the catalyst carrier 44, the vacuum pump 52 and the motor 61 are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0034] The main function realized by the utility model is that: through starting the feeding mechanism 02, the waste oil in the small diesel engine set is discharged into the heating mechanism 03, through starting the heating mechanism 03, the water in the waste oil is evaporated, through the decomposition mechanism 04, the harmful substances in the water vapor are decomposed and filtered, after the water in the waste oil is discharged, the filtering mechanism 06 is started, the waste oil is discharged, the oil residue in the waste oil is filtered, and the practicability of the equipment is improved.

[0035] The preferred embodiments of the utility model are described above, and it should be noted that, for ordinary technical personnel in the technical field, without departing from the technical principle of the utility model, a plurality of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection range of the utility model.

Claims

1. A small diesel generator waste oil recovery device, comprising a moving mechanism (01); characterized in that: The mobile mechanism (01) further comprises a feeding mechanism (02), a heating mechanism (03), an exhaust mechanism (05), a decomposition mechanism (04) and a filtering mechanism (06). The feeding mechanism (02), the heating mechanism (03), the exhaust mechanism (05) and the decomposition mechanism (04) are all mounted on the moving mechanism (01). The heating mechanism (03) is located on the right side of the feeding mechanism (02), the decomposition mechanism (04) is located on the right side of the heating mechanism (03), the decomposition mechanism (04) is located on the left side of the exhaust mechanism (05), and the filtering mechanism (06) is mounted inside the heating mechanism (03).

2. A small diesel generator waste oil recovery device as claimed in claim 1, characterized in that: The moving mechanism (01) includes a base plate (11), a plurality of rollers (12), a connecting member (13) and a connecting bolt (14), wherein the top ends of the plurality of rollers (12) are respectively mounted on the bottom ends of the base plate (11), the left end of the connecting member (13) is mounted on the right end of the base plate (11), and the connecting bolt (14) is mounted on the connecting member (13).

3. A small diesel generator waste oil recovery device as claimed in claim 1, characterized in that: The feeding mechanism (02) includes a connector (21), a first pipe (22), an oil pump (23), a second pipe (24) and a first bracket (25). The output end of the connector (21) is connected to the input end of the first pipe (22), the output end of the first pipe (22) is connected to the input end of the oil pump (23), the output end of the oil pump (23) is connected to the input end of the second pipe (24), the input end of the second pipe (24) is connected to the heating mechanism (03) and is located above the filtering mechanism (06). The bottom end of the oil pump (23) is installed on the top end of the first bracket (25).

4. A small diesel generator waste oil recovery device as claimed in claim 1, characterized in that: The heating mechanism (03) includes a heating barrel (31), a heater (32), a cleaning brush (33), an oil drain pipe (34) and a plurality of supporting legs (35), wherein the heater (32) is mounted on the outer wall of the heating barrel (31), the rear end of the cleaning brush (33) is mounted on the outer wall of the heating barrel (31), the front end of the cleaning brush (33) is in contact with the filtering mechanism (06), the input end of the oil drain pipe (34) is connected to the outer wall of the heating barrel (31), a valve is provided on the input end of the oil drain pipe (34), and the bottom end of the heating barrel (31) is mounted on the top end of the plurality of supporting legs (35).

5. A small diesel generator waste oil recovery device as claimed in claim 4, characterized in that: The decomposition mechanism (04) includes a decomposition barrel (41), a plurality of ultraviolet lamps (42), a mounting net (43), a plurality of catalyst carriers (44), a baffle (45), a filter plate (46), a third pipe (47) and an exhaust pipe (48). A liquid level sensor is provided at the lower portion of the interior of the decomposition barrel (41). The plurality of ultraviolet lamps (42) are respectively mounted on the inner wall of the decomposition barrel (41). The mounting net (43) is mounted on the inner wall of the decomposition barrel (41). The mounting net (43) is located below the plurality of ultraviolet lamps (42). The plurality of catalyst carriers (44) are disposed on the inner wall of the decomposition barrel (41). ) are respectively installed on the top of the installation net (43), the baffle (45) and the filter plate (46) are both installed on the inner wall of the decomposition barrel (41), and the baffle (45) is located below the installation net (43), and the filter plate (46) is located below the baffle (45). The input end of the third pipe (47) is connected to the outer wall of the decomposition barrel (41), and a valve is provided on the input end of the third pipe (47). The input end of the exhaust pipe (48) is connected to the top of the heating barrel (31), and the output end of the exhaust pipe (48) is connected to the top of the decomposition barrel (41).

6. A small diesel generator waste oil recovery device as claimed in claim 5, characterized in that: The exhaust mechanism (05) comprises a fourth pipe (51), a vacuum pump (52) and a fifth pipe (53), wherein the input end of the fourth pipe (51) is connected to the outer wall of the decomposition barrel (41), the output end of the fourth pipe (51) is connected to the input end of the vacuum pump (52), and the output end of the vacuum pump (52) is connected to the input end of the fifth pipe (53).

7. A small diesel generator waste oil recovery device as claimed in claim 4, characterized in that: The filtering mechanism (06) includes a motor (61), a rotating shaft (62), a plurality of connecting rods (63), a filter barrel (64) and a bearing (65). The top end of the rotating shaft (62) is connected to the output end of the motor (61). The side ends of the plurality of connecting rods (63) are respectively mounted on the lower part of the rotating shaft (62). The other side ends of the plurality of connecting rods (63) are respectively mounted on the inner wall of the filter barrel (64). A valve is provided on the output end of the filter barrel (64). The inner ring of the bearing (65) is mounted on the output end of the filter barrel (64). The outer ring of the bearing (65) is mounted on the bottom end of the heating barrel (31).

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