A blending fuel production device

Abstract

The present invention discloses a blending fuel production device, which includes: an oil storage tank, a blending tank, a spiral mixer and a plurality of pipelines for connecting the oil storage tank and the blending tank; the oil storage tank includes an oil storage tank body, and the lower part of the oil storage tank body is provided with an oil storage tank oil outlet; the blending tank includes a blending tank body, and the lower part of the blending tank body is provided with a blending tank oil inlet; the oil storage tank oil outlet is located above the blending tank and allows the oil in the oil storage tank to flow into the blending tank through the pipeline under the action of its own gravity; the spiral mixer is arranged in the pipeline between the blending tank and the oil storage tank and is used to divide the oil flowing through the spiral mixer in the pipeline and make the oil produce swirl mixing; the spiral mixer includes three spiral blades and a central axis. The present invention realizes rapid and uniform mixing of oil, and the mixing process utilizes the oil's own gravity, has no energy input, is low in cost and has uniform mixing, and meets the synthesis requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of biofuel production devices, and in particular relates to a blended fuel production device. Background Art

[0002] Gutter oil refers to all kinds of inferior oils in life, such as recycled cooking oil, repeatedly used frying oil and other catering waste oils. It has a wide range of sources and low prices. It also has a low sulfur content and is green and environmentally friendly. Through reasonable treatment, gutter oil can be used as a renewable fuel energy source, which can not only prevent gutter oil from being used in the food field again, but also alleviate the pressure brought to society by energy shortages. A good blending fuel blending equipment can speed up the blending of oil, speed up the utilization of gutter oil, improve energy utilization, and be more energy-saving and environmentally friendly. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a blended fuel production device, which realizes rapid and uniform mixing of oil. The mixing process utilizes the oil's own gravity, requires no energy input, has low cost and uniform mixing, and meets synthesis requirements.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a blended fuel production device, characterized in that it includes: an oil storage tank, a blending tank, a spiral mixer and a plurality of pipelines for connecting the oil storage tank and the blending tank;

[0005] The oil storage tank comprises an oil storage tank body, and an oil storage tank oil outlet is provided at the lower part of the oil storage tank body;

[0006] The blending tank comprises a blending tank body, and an oil inlet for the blending tank is provided on the upper part of the blending tank body;

[0007] The oil outlet of the oil storage tank is connected to the oil inlet of the blending tank through a pipeline. The oil outlet of the oil storage tank is located above the blending tank and allows the oil in the oil storage tank to flow into the blending tank through the pipeline under the action of its own gravity;

[0008] The spiral mixer is arranged in the pipeline between the blending tank and the oil storage tank and is used to divide the oil flowing through the spiral mixer in the pipeline and to generate swirling mixing of the oil;

[0009] The spiral mixer includes three spiral blades and a central shaft, one end of the three spiral blades is fixedly connected to the outer wall of the central shaft, the three spiral blades are evenly distributed on the circumference outside the central shaft, and the other ends of the three spiral blades are fixed on the pipe wall of the pipeline.

[0010] The above-mentioned blended fuel production device is characterized in that the number of the oil storage tanks is multiple, and the multiple oil storage tanks are respectively a first oil storage tank and a plurality of second oil storage tanks;

[0011] The pipeline includes a first pipeline and a plurality of second pipelines;

[0012] One end of the first pipeline is connected to the oil storage tank oil outlet of the first oil storage tank, and the other end of the first pipeline is connected to the oil inlet of the blending tank, and the plurality of second oil storage tanks are arranged in sequence along the first pipeline;

[0013] One end of the second pipeline is connected to the oil storage tank oil outlet of the corresponding second oil storage tank, the other end of the second pipeline extends into the middle of the first pipeline, and the outlet direction of the second pipeline extending into one end of the first pipeline is the same as the direction of the first pipeline, and the first pipeline and the second pipeline are sealed and connected.

[0014] The above-mentioned blended fuel production device is characterized in that the first pipeline is provided with a first flow meter and a first control valve, the first flow meter is provided on the pipeline close to the first oil storage tank, and the first control valve is provided on the pipeline between the first flow meter and the first oil storage tank;

[0015] The plurality of second pipelines are each provided with a second flow meter and a second control valve, and the second control valve is provided on the second pipeline between the second flow meter and the second oil storage tank.

[0016] The above-mentioned blended fuel production device is characterized in that there are multiple spiral mixers, and the multiple spiral mixers are respectively arranged on the first pipeline between two adjacent second oil storage tanks or on the first pipeline between the second oil storage tank and the blending tank.

[0017] The above-mentioned blending fuel production device is characterized in that a blending oil filter is arranged on the pipeline, and the blending oil filter is arranged on the side close to the blending tank. A double-layer filter is arranged in the blending oil filter, which are a first filter and a second filter. The filter holes of the first filter are larger than the filter holes of the second filter. The first filter and the second filter can be detachably installed in the blending oil filter.

[0018] The above-mentioned blending fuel production device is characterized in that one end of the pipeline connected to the blending tank extends into the blending tank and then spirally extends downward along the inner wall of the blending tank, so that the oil flowing into the blending tank through the pipeline rotates along the inner wall of the blending tank.

[0019] The above-mentioned blending fuel production device is characterized in that the blending tank also includes an oil pumping circulation pipeline, an explosion-proof oil pump, a first valve, a second valve, a third valve, a fourth valve, a third flow meter and an external pipeline, one end of the oil pumping circulation pipeline is connected to the lower end of the blending tank, the other end of the oil pumping circulation pipeline passes through the blending tank body and extends into the inside of the blending tank body and then spirally extends downward along the inner wall of the blending tank body, so that the oil flowing into the blending tank through the oil pumping circulation pipeline rotates and flows along the inner wall of the blending tank, the connection between the other end of the oil pumping circulation pipeline and the blending tank body is higher than the connection between the pipeline and the blending tank, and the spiral direction of the part of the oil pumping circulation pipeline extending into the inside of the blending tank body is the same as the spiral direction of the part of the pipeline extending into the inside of the blending tank;

[0020] The explosion-proof oil pump is arranged on the oil pumping circulation pipeline, the first valve is arranged on the oil pumping circulation pipeline at the front end of the explosion-proof oil pump, the second valve and the third valve are arranged in sequence on the oil pumping circulation pipeline at the rear end of the explosion-proof oil pump, one end of the external pipeline is connected to the oil pumping circulation pipeline between the second valve and the third valve, the fourth valve and the third flow meter are both arranged on the external pipeline and the third flow meter is arranged on a side close to the oil pumping circulation pipeline,

[0021] The above-mentioned blended fuel production device is characterized in that the first filter screen and the second filter screen are both made of nylon, and the outer sides of the first filter screen and the second filter screen are provided with a frame made of steel plate, and the steel plate is evenly provided with through holes.

[0022] The above-mentioned blended fuel production device is characterized in that a finished oil filter is installed at one end of the oil extraction circulation pipeline connected to the lower end of the blending tank.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The oil in the mixing device of the present invention begins to mix in the pipeline, which accelerates the mixing process of the oil, shortens the mixing time, and improves the synthesis efficiency of the blended fuel.

[0025] 2. The oil-bearing mixing process of the present invention does not require the intervention of power equipment, thereby eliminating the impact caused by power equipment failure and reducing the occurrence of safety accidents.

[0026] 3. The blending oil filter of the present invention adopts a double-layer filter screen and graded filtration, which can ensure the filtration requirements while reducing the problems of fast accumulation of impurities and easy clogging due to the first-level filtration.

[0027] The invention is further described in detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a top view of the overall structure of the present invention.

[0029] Figure 2 It is the front view of the overall structure of the present invention.

[0030] Figure 3 A front view of a spiral mixer according to the present invention.

[0031] Figure 4 Left side view of the spiral mixer of the present invention.

[0032] Figure 5 A cross-sectional view of the blending oil filter of the present invention.

[0033] Figure 6 A schematic diagram of the flow trajectory of the oil in the blending tank of the present invention.

[0034] Description of reference numerals:

[0035] 10—Oil storage tank; 101—First oil storage tank;

[0036] 102—second oil storage tank; 11—oil storage tank body;

[0037] 12—Oil outlet of oil storage tank; 20—Blending tank;

[0038] 21—blending tank body; 22—blending tank oil inlet; 23—oil pumping circulation pipeline;

[0039] 24—explosion-proof oil pump; 25—first valve; 26—second valve;

[0040] 27—third valve; 28—fourth valve; 29—third flow meter;

[0041] 30—screw mixer; 31—three screw blades; 32—central axis;

[0042] 40—pipeline; 41—first pipeline; 42—second pipeline;

[0043] 43—first flow meter; 44—first control valve; 45—second flow meter;

[0044] 46—second control valve; 47—blending oil filter; 48—first filter screen;

[0045] 49—Second filter; 50—External pipeline; 51—Finished oil filter. DETAILED DESCRIPTION

[0046] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0047] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0048] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0049] like Figures 1 to 4 As shown, the present invention discloses a blending fuel production device, characterized in that it includes: an oil storage tank 10, a blending tank 20, a spiral mixer 30 and a plurality of pipelines 40 for connecting the oil storage tank 10 and the blending tank 20; the oil storage tank 10 includes an oil storage tank body 11, and an oil storage tank oil outlet 12 is provided at the lower part of the oil storage tank body 11. The blending tank 20 includes a blending tank body 21, and a blending tank oil inlet 22 is provided at the upper part of the blending tank body 21. The oil storage tank oil outlet 12 is connected to the blending tank oil inlet 22 through the pipeline 40, and the oil storage tank oil outlet 12 is located above the blending tank 20 and allows the oil in the oil storage tank 10 to flow into the blending tank 20 through the pipeline 40 under the action of its own gravity. The spiral mixer 30 is arranged in the pipeline between the blending tank 20 and the oil storage tank 10 and is used to divide the oil flowing through the spiral mixer 30 in the pipeline 40 and make the oil produce swirl mixing. The spiral mixer 30 includes three spiral blades 31 and a central shaft 32, one end of each of the three spiral blades 31 is fixedly connected to the outer wall of the central shaft 32, the three spiral blades 31 are evenly distributed on the circumference outside the central shaft 32, and the other ends of the three spiral blades 31 are fixed to the pipe wall of the pipeline.

[0050] At present, the utilization of waste oil is mainly to directly collect garbage oil from the catering industry, obtain treated waste oil after filtering, dewatering, dewaxing and other steps, and then mix the treated waste oil with methanol in a molar ratio of 8 to 9:1, heat it in a water bath at 35 to 45°C for 10 to 30 minutes, add a solid catalyst, heat it in a water bath at 60 to 65°C for 2 to 4 hours, remove excess methanol by vacuum distillation, remove the lower layer of glycerol and solid catalyst by centrifugation, and obtain fatty acid methyl ester; then fully mix the fatty acid methyl ester with petrochemical diesel, light wax oil, and add a combustion aid to obtain the final finished blended fuel. The blended fuel can be used as a fuel. The oil of the present invention begins to mix in the pipeline through the action of the spiral mixer 30 blades before being injected into the blending tank 20, which accelerates the mixing process of the oil and shortens the mixing time. The synthesis efficiency of the blended fuel is improved. At the same time, the present invention reasonably arranges the spatial positions of the oil storage tank 10 and the blending tank 20, so that the oil can flow from the oil storage tank 10 into the blending tank 20 under the action of its own gravity, without the intervention of power equipment, thereby eliminating the impact caused by power equipment failure. Because oil is a flammable and explosive item, friction, short circuit ignition, etc. during the operation of the power equipment may cause safety accidents, and removing the power equipment can avoid the occurrence of such safety accidents.

[0051] like Figure 1 and Figure 2 As shown, there are multiple oil storage tanks 10, and the multiple oil storage tanks 10 are respectively a first oil storage tank 101 and a plurality of second oil storage tanks 102; the pipeline 40 includes a first pipeline 41 and a plurality of second pipelines 42; one end of the first pipeline 41 is connected to the oil storage tank oil outlet 12 of the first oil storage tank 101, and the other end of the first pipeline 41 is connected to the blending tank oil inlet 22, and the plurality of second oil storage tanks 102 are arranged in sequence along the first pipeline 41; one end of the second pipeline 42 is connected to the oil storage tank oil outlet 12 of the corresponding second oil storage tank 102, and the other end of the second pipeline 42 extends into the middle of the first pipeline 41 and the outlet direction of the second pipeline 42 extending into one end of the first pipeline 41 is the same as the direction of the first pipeline 41, and the first pipeline 41 and the second pipeline 42 are sealed and connected.

[0052] Petrochemical diesel accounts for the largest proportion of the blended fuel, and the petrochemical diesel is stored in the first oil storage tank 101, and the other oils are loaded into the second oil storage tank 102 in sequence. During the blending process, the petrochemical diesel in the first oil storage tank 101 flows into the blending tank 20 along the first pipeline 41, and the other oils in the second oil storage tank 102 flow into the first pipeline 41 through the second pipeline 42. Since one end of the second pipeline 42 extends into the first pipeline 41 and the outlet direction is consistent with the direction of the fluid flow in the first pipeline 41, when the fluid in the first pipeline 41 flows through the outlet of the second pipeline 42 extending into the first pipeline 41, suction is generated on the fluid in the second pipeline 42, so that the fluid in the first pipeline 41 wraps the fluid in the second pipeline 42 and continues to flow forward along the pipeline. When passing through the spiral mixer 30, the two fluids are divided by the three spiral blades 31 and a spiral flow is generated. The fluid in the second pipeline 42 on the original inner side is mixed with the fluid in the first pipeline 41 on the original outer side under the action of the dividing force and the centrifugal force.

[0053] like Figure 1 As shown, the first pipeline 41 is provided with a first flow meter 43 and a first control valve 44, the first flow meter 43 is arranged on the pipeline close to the first oil storage tank 101, and the first control valve 44 is arranged on the pipeline between the first flow meter 43 and the first oil storage tank 101; the plurality of second pipelines 42 are each provided with a second flow meter 45 and a second control valve 46, and the second control valve 46 is arranged on the second pipeline 42 between the second flow meter 45 and the second oil storage tank 102.

[0054] The present invention measures the amount of each oil material flowing into the blending tank 20 through a flow meter, and controls the flow rate of the oil material in each pipeline through a control valve. The control valve can control the flow rate flowing in the pipeline by controlling the opening size. By reasonably adjusting the control valve, the various oil materials entering the blending tank 20 can reach the expected ratio. At the same time, it can also be achieved that the process of each oil material flowing into the blending tank 20 reaching the expected ratio is completed synchronously, that is, when each oil material is mixed in the pipeline, it is mixed in the expected ratio.

[0055] like Figure 1 As shown, there are multiple spiral mixers 30 , and the multiple spiral mixers 30 are respectively arranged on the first pipeline 41 between two adjacent second oil storage tanks 102 or on the first pipeline 41 between the second oil storage tank 102 and the blending tank 20 .

[0056] like Figure 5As shown, a blending oil filter 47 is provided on the pipeline 40, and the blending oil filter 47 is arranged on a side close to the blending tank 20. A double-layer filter screen is arranged in the blending oil filter 47, which are a first filter screen 48 and a second filter screen 49. The filter holes of the first filter screen 48 are larger than the filter holes of the second filter screen 49. The first filter screen 48 and the second filter screen 49 can be detachably installed in the blending oil filter 47.

[0057] Double-layer filter screens and graded filtration can ensure the filtration requirements while reducing the problems of fast accumulation of impurities and easy clogging caused by primary filtration. In graded filtration, impurities of different sizes are blocked by the first filter screen 48 and the second filter screen 49 respectively, reducing the accumulation of impurities and clogging of the filter screen. At the same time, the first filter screen 48 and the second filter screen 49 can be detachably installed to facilitate cleaning of impurities and replacement of filters.

[0058] like Figure 1 , Figure 2 and Figure 6 As shown, one end of the pipeline 40 connected to the blending tank 20 extends into the blending tank 20 and then spirally extends downward along the inner wall of the blending tank 20, so that the oil flowing into the blending tank 20 through the pipeline 40 rotates and flows along the inner wall of the blending tank 20.

[0059] When the oil flows into the blending tank 20, the present invention utilizes the flow rate of the oil itself and guides the oil through the pipeline 40, so that the oil flowing into the blending tank 20 makes a spiral motion around the inner wall of the blending tank 20, so that the oil is further mixed, and no power equipment is introduced during the mixing process.

[0060] like Figure 2As shown, the blending tank 20 also includes an oil pumping circulation pipeline 23, an explosion-proof oil pump 24, a first valve 25, a second valve 26, a third valve 27, a fourth valve 28, a third flow meter 29 and an external pipeline 50. One end of the oil pumping circulation pipeline 23 is connected to the lower end of the blending tank 20, and the other end of the oil pumping circulation pipeline 23 passes through the blending tank body 21 and extends into the blending tank body 21, and then spirally extends downward along the inner wall of the blending tank body 21, so that the oil flowing into the blending tank 20 through the oil pumping circulation pipeline 23 rotates and flows along the inner wall of the blending tank 20. The connection between the other end of the oil pumping circulation pipeline 23 and the blending tank body 21 is higher than the connection between the pipeline 40 and the blending tank 20. The spiral direction of the ring pipeline 23 extending into the inner part of the blending tank body 21 is the same as the spiral direction of the pipeline 40 extending into the inner part of the blending tank 20; the explosion-proof oil pump 24 is arranged on the oil pumping circulation pipeline 23, the first valve 25 is arranged on the oil pumping circulation pipeline 23 at the front end of the explosion-proof oil pump 24, the second valve 26 and the third valve 27 are arranged in sequence on the oil pumping circulation pipeline 23 at the rear end of the explosion-proof oil pump 24, one end of the external pipeline 50 is connected to the oil pumping circulation pipeline 23 between the second valve 26 and the third valve 27, the fourth valve 28 and the third flowmeter 29 are both arranged on the external pipeline 50 and the third flowmeter 29 is arranged on the side close to the oil pumping circulation pipeline 23.

[0061] The oil pumping circulation pipeline 23 is used to pump out the mixed blended fuel and load it onto a truck for transportation. At the same time, the oil pumping circulation pipeline 23 can also recirculate and mix the oil in the blending tank 20. When the oil in the pipeline 40 flows into the blending tank 20, since the spiral direction of the part of the oil pumping circulation pipeline 23 extending into the inner part of the blending tank body 21 is the same as the spiral direction of the part of the pipeline 40 extending into the inner part of the blending tank 20, starting the explosion-proof oil pump 24 can strengthen the rotation and mixing of the oil in the blending tank 20.

[0062] In this embodiment, the first filter screen 48 and the second filter screen 49 are both made of nylon, and a frame made of steel plate is disposed on the outer side of the first filter screen 48 and the second filter screen 49, and through holes are evenly opened on the steel plate.

[0063] like Figure 2 As shown, a finished oil filter 51 is installed at one end of the oil pumping circulation pipeline 23 which is connected to the lower end of the blending tank 20.

[0064] The finished oil filter 51 can further filter impurities and sediments in the mixed oil.

[0065] The working principle of the present invention is as follows: petrochemical diesel is loaded into the first oil storage tank 101, and other oils are loaded into the second oil storage tank 102. The first control valve 44 and each second control valve 46 are set according to the proportion of the blended fuel. The first control valve 44 and each second control valve 46 are opened. The petrochemical diesel in the first oil storage tank 101 and other oils in each second oil storage tank 102 flow to the blending tank 20 along the pipeline under the action of their own gravity. A spiral mixer 30 is arranged on the pipeline through which the oil flows. Under the action of the three spiral blades 31 of the spiral mixer 30, the oil is divided and a spiral flow is generated. The oil is divided and mixed during the flow process of the pipeline. After entering the blending tank 20, the mixed oil rotates along the blending tank 20 under the guidance of the pipeline 40, so that the oil is further mixed. The present invention makes full use of the gravity of the oil itself, and no power equipment is added during the mixing process. It has the advantages of low equipment cost and low failure rate. One end of the oil pumping circulation pipeline 23 of the present invention extends into the blending tank body 21 and then spirally extends downward along the inner wall of the blending tank body 21. The spiral direction of the portion of the oil pumping circulation pipeline 23 extending into the blending tank body 21 is the same as the spiral direction of the portion of the pipeline 40 extending into the blending tank 20. Figure 6 As shown, the explosion-proof oil pump 24 is started, and the oil can be pumped from the bottom of the blending tank 20 to the upper part of the blending tank 20 through the oil pumping circulation pipeline 23. After entering the blending tank 20, the oil performs a spiral mixing motion from the upper part of the blending tank 20 downwards through the guiding effect of the oil pumping circulation pipeline 23. The direction of the spiral mixing motion is the same as the spiral mixing direction of the oil entering the blending tank 20 from the pipeline 40. The circulation of the blending tank 20 can be further strengthened, and the oil can also be transported to the oil tanker through the external pipeline 50, and the finished blended fuel can be directly loaded onto the truck.

[0066] The above is only a preferred embodiment of the invention and does not limit the invention in any way. Any simple modification, change and equivalent structural transformation made to the above embodiments based on the technical essence of the invention still falls within the protection scope of the technical solution of the invention.

Claims

1. A blended fuel production device, characterized in that: include: An oil storage tank (10), a blending tank (20), a spiral mixer (30) and a plurality of pipelines (40) for connecting the oil storage tank (10) and the blending tank (20); The oil storage tank (10) comprises an oil storage tank body (11), and an oil storage tank oil outlet (12) is provided at the lower part of the oil storage tank body (11); The blending tank (20) comprises a blending tank body (21), and a blending tank oil inlet (22) is provided on the upper portion of the blending tank body (21); The oil outlet (12) of the oil storage tank is connected to the oil inlet (22) of the blending tank via a pipeline (40); the oil outlet (12) of the oil storage tank is located above the blending tank (20) and enables the oil in the oil storage tank (10) to flow into the blending tank (20) via the pipeline (40) under the action of its own gravity; The spiral mixer (30) is arranged in the pipeline between the blending tank (20) and the oil storage tank (10) and is used to divide the oil flowing through the spiral mixer (30) in the pipeline (40) and to generate swirling mixing of the oil; The spiral mixer (30) comprises three spiral blades (31) and a central shaft (32), one end of each of the three spiral blades (31) is fixedly connected to the outer wall of the central shaft (32), the three spiral blades (31) are evenly distributed on the circumference outside the central shaft (32), and the other ends of the three spiral blades (31) are fixed to the pipe wall of the pipeline; The blending tank (20) further comprises an oil pumping circulation pipeline (23), an explosion-proof oil pump (24), a first valve (25), a second valve (26), a third valve (27), a fourth valve (28), a third flow meter (29) and an external pipeline (50); one end of the oil pumping circulation pipeline (23) is connected to the lower end of the blending tank (20); the other end of the oil pumping circulation pipeline (23) passes through the blending tank body (21) and extends into the blending tank body (21) and then along the blending tank body. The inner wall of the oil pumping circulation pipeline (21) extends downward in a spiral, so that the oil flowing into the blending tank (20) through the oil pumping circulation pipeline (23) rotates and flows along the inner wall of the blending tank (20); the connection between the other end of the oil pumping circulation pipeline (23) and the blending tank body (21) is higher than the connection between the pipeline (40) and the blending tank (20); the spiral direction of the portion of the oil pumping circulation pipeline (23) extending into the inner part of the blending tank body (21) is the same as the spiral direction of the portion of the pipeline (40) extending into the inner part of the blending tank (20); The explosion-proof oil pump (24) is arranged on the oil pumping circulation pipeline (23); the first valve (25) is arranged on the oil pumping circulation pipeline (23) at the front end of the explosion-proof oil pump (24); the second valve (26) and the third valve (27) are arranged in sequence on the oil pumping circulation pipeline (23) at the rear end of the explosion-proof oil pump (24); one end of the external pipeline (50) is connected to the oil pumping circulation pipeline (23) between the second valve (26) and the third valve (27); the fourth valve (28) and the third flow meter (29) are both arranged on the external pipeline (50), and the third flow meter (29) is arranged on a side close to the oil pumping circulation pipeline (23); One end of the pipeline (40) connected to the blending tank (20) extends into the blending tank (20) and then spirally extends downward along the inner wall of the blending tank (20), so that the oil flowing into the blending tank (20) through the pipeline (40) rotates and flows along the inner wall of the blending tank (20).

2. A blended fuel production device according to claim 1, characterized in that: The number of the oil storage tanks (10) is multiple, and the multiple oil storage tanks (10) are respectively a first oil storage tank (101) and a plurality of second oil storage tanks (102); The pipeline (40) includes a first pipeline (41) and a plurality of second pipelines (42); One end of the first pipeline (41) is connected to the oil storage tank oil outlet (12) of the first oil storage tank (101), and the other end of the first pipeline (41) is connected to the blending tank oil inlet (22), and the plurality of second oil storage tanks (102) are arranged in sequence along the first pipeline (41); One end of the second pipeline (42) is connected to the oil storage tank oil outlet (12) of the corresponding second oil storage tank (102), the other end of the second pipeline (42) extends into the middle of the first pipeline (41), and the outlet direction of the second pipeline (42) extending into one end of the first pipeline (41) is the same as that of the first pipeline (41), and the first pipeline (41) and the second pipeline (42) are sealed and connected.

3. A blended fuel production device according to claim 2, characterized in that: The first pipeline (41) is provided with a first flow meter (43) and a first control valve (44); the first flow meter (43) is provided on the pipeline close to the first oil storage tank (101); and the first control valve (44) is provided on the pipeline between the first flow meter (43) and the first oil storage tank (101); The plurality of second pipelines (42) are each provided with a second flow meter (45) and a second control valve (46), and the second control valve (46) is provided on the second pipeline (42) between the second flow meter (45) and the second oil storage tank (102).

4. A blended fuel production device according to claim 2 or 3, characterized in that: The number of the spiral mixers (30) is plural, and the plurality of spiral mixers (30) are respectively arranged on the first pipeline (41) between two adjacent second oil storage tanks (102) or on the first pipeline (41) between the second oil storage tank (102) and the blending tank (20).

5. A blended fuel production device according to claim 1, characterized in that: The pipeline (40) is provided with a blending oil filter (47), and the blending oil filter (47) is arranged on a side close to the blending tank (20). The blending oil filter (47) is provided with a double-layer filter screen, namely a first filter screen (48) and a second filter screen (49). The filter holes of the first filter screen (48) are larger than the filter holes of the second filter screen (49). The first filter screen (48) and the second filter screen (49) can be detachably installed in the blending oil filter (47).

6. A blended fuel production device according to claim 5, characterized in that: The first filter screen (48) and the second filter screen (49) are both made of nylon, and a frame made of a steel plate is arranged on the outside of the first filter screen (48) and the second filter screen (49), and through holes are evenly opened on the steel plate.

7. A blended fuel production device according to claim 1, characterized in that: A finished oil filter (51) is installed at one end of the oil extraction circulation pipeline (23) that is connected to the lower end of the blending tank (20).

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