Diesel oil filtering equipment

Abstract

The utility model relates to the technical field of oil product filtering, solves the problem that filtering is not thorough due to the fact that impurities with different components cannot be treated in the prior art, and particularly discloses diesel oil filtering equipment which comprises an atomization vacuum mechanism, a finished product filtering mechanism and a gas treatment mechanism. The finished product filtering mechanism is connected with the bottom of the atomization vacuum mechanism, the gas treatment mechanism is connected with the top of the atomization vacuum mechanism, an atomization nozzle is arranged at the top in the atomization vacuum mechanism and connected with an atomization input pipe, and a first liquid level valve and a second liquid level valve are arranged on the inner wall of the atomization vacuum mechanism. The gas treatment mechanism comprises a cooler and a collecting box, the top of the atomization vacuum mechanism is connected with the inlet end of the cooler through an atomization mechanism one-way valve, and the outlet end of the cooler is connected with the inlet end of the collecting box. The device is used for atomizing, separating and filtering diesel oil, various impurities contained in the diesel oil can be effectively removed, and the product purity is improved.

Description

Technical Field

[0001] This utility model relates to the field of oil filtration technology, and in particular to a diesel filtration device. Background Technology

[0002] A diesel fuel filter is a device specifically designed for diesel fuel purification. It effectively removes impurities, moisture, gum, and mechanical contaminants from diesel fuel through filter elements and other filtration components. Its working principle utilizes physical interception or adsorption to finely filter the fuel during transport, ensuring that the diesel fuel entering the engine meets cleanliness standards. This reduces wear on precision components such as fuel injectors and pumps, extends engine life, improves fuel combustion efficiency, and reduces the risk of equipment failure due to fuel impurities. It is widely used in diesel-fueled equipment systems such as automobiles, ships, and generator sets. Depending on the application, it can be categorized into portable, vehicle-mounted, and stationary types. Its structural design emphasizes a balance between filtration precision and flow efficiency, making it an indispensable and crucial device for the maintenance of diesel-powered equipment.

[0003] In the relevant technologies of diesel filtration equipment, the filtration method often relies on a fixed filter medium, which is difficult to deal with the complex and varied pollutants in diesel. Moreover, some filtration devices cannot effectively remove impurities of different components. For example, the presence of water can cause corrosion, wear and jamming of the fuel supply system, and can also worsen the diesel combustion process, reduce engine power and affect its normal operation. Sediments can easily clog the filter element, resulting in low filtration efficiency and failing to meet the demand for high-efficiency diesel filtration. Utility Model Content

[0004] To address the problem in existing technologies that cannot process impurities of different compositions, resulting in incomplete filtration, this invention provides a diesel fuel filtration device.

[0005] The technical solution adopted in this utility model is:

[0006] A diesel fuel filtration device includes an atomizing vacuum mechanism and a gas processing mechanism. The gas processing mechanism is connected to the top of the atomizing vacuum mechanism. An atomizing nozzle is provided at the top of the atomizing vacuum mechanism, and the atomizing nozzle is connected to an atomizing input pipe. A first liquid level valve and a second liquid level valve are respectively provided on the inner wall of the atomizing vacuum mechanism. The gas processing mechanism includes a cooler and a collection box. The top of the atomizing vacuum mechanism is connected to the inlet end of the cooler through a one-way valve of the atomizing mechanism, and the outlet end of the cooler is connected to the inlet end of the collection box.

[0007] The gas processing mechanism is used to process the gas separated by atomization in the atomization vacuum mechanism, and the first liquid level valve and the second liquid level valve are used to monitor the highest and lowest liquid levels in the atomization vacuum mechanism, respectively.

[0008] Furthermore, the atomizing vacuum mechanism includes multiple atomizing vacuum canisters connected in sequence. Each atomizing vacuum canister is equipped with an atomizing nozzle, and each atomizing vacuum canister is connected to an atomizing mechanism pump at its bottom. The number of atomizing mechanism pumps and atomizing mechanism one-way valves corresponds one-to-one with the number of atomizing vacuum canisters. One of the atomizing vacuum canisters located at the end of the sequentially connected atomizing vacuum canisters is connected to the finished product filtration mechanism through the atomizing mechanism pump.

[0009] The atomizing mechanism pump is used to transport oil between multiple atomizing vacuum tanks and ultimately transport the oil from the atomizing vacuum mechanism to the finished product filtration mechanism.

[0010] Furthermore, the gas processing mechanism also includes a gas vacuum mechanism connected to the outlet end of the collection box. The outlet end of the gas vacuum mechanism is connected to the inlet end of a gas one-way valve. The outlet end of the gas one-way valve is connected to the inlet end of an oil-gas separator. The outlet end of the oil-gas separator is connected to a vacuum pump.

[0011] The gas vacuum mechanism is used to contain and buffer the gas delivery, and the vacuum pump is used to discharge the air separated by the oil-gas separator.

[0012] Furthermore, it also includes a finished product filtration mechanism, which is connected to the bottom of the atomizing vacuum mechanism. The finished product filtration mechanism includes a filter barrel and a finished product pressure switch. The finished product pressure switch is connected between the atomizing vacuum mechanism and the filter barrel. A membrane separation filtration component is provided inside the filter barrel.

[0013] The finished product pressure switch is used to monitor the pressure inside the filter barrel and trigger an alarm, and the membrane separation filter assembly is used to filter oil through the membrane separation filter element.

[0014] Furthermore, it also includes a pretreatment device, which includes a primary filtration mechanism and a heating mechanism. The inlet end of the primary filtration mechanism is connected to an oil inlet pipe, the outlet end of the primary filtration mechanism is connected to the inlet end of the heating mechanism, and the outlet end of the heating mechanism is connected to the atomization input pipe of the atomization vacuum mechanism.

[0015] The primary filtration mechanism is used to filter solid impurities in the oil, and the heating mechanism is used to heat the oil to the temperature required by the atomizing vacuum mechanism.

[0016] Furthermore, the primary filtration mechanism includes a Y-type filter, a primary filtration pump, a bag filter, and a precision filter connected in sequence. A primary filtration pressure switch is also connected between the bag filter and the precision filter. The inlet end of the Y-type filter is connected to the oil inlet pipe, and the outlet end of the precision filter is connected to the inlet end of the heating mechanism.

[0017] The primary filter pressure switch is used to monitor the pressure inside the precision filter and trigger an alarm.

[0018] Furthermore, the heating mechanism includes multiple heaters connected in sequence, and an atomizing liquid inlet pump is also connected between the outlet end and the inlet end of the heating mechanism.

[0019] The beneficial effects of this utility model are:

[0020] In operation, the diesel fuel filtration equipment of this invention injects diesel fuel into the atomizing vacuum mechanism via an atomizing nozzle after passing through an atomizing input pipe. Gas-liquid separation and impurity separation are achieved in a vacuum environment. The finished product filtration mechanism further filters the atomized fuel to obtain the final product, effectively removing various impurities. The atomized gas is cooled by a one-way valve in the atomizing mechanism and then enters a collection tank to prevent gas contamination. A first and second liquid level valve monitor the liquid level in real time. When the liquid level falls below the minimum limit, the atomizing vacuum mechanism stops operating to prevent damage from idling. When the level rises above the maximum limit, the front-end operation stops to prevent liquid overflow and ensure stable operation. This equipment effectively treats impurities of different components, improving filtration efficiency and quality, reducing equipment failures caused by impurities, extending equipment lifespan, and ensuring safe and stable operation, thus meeting the demand for high-efficiency diesel fuel filtration. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the device according to this utility model;

[0022] Figure 2 This is a schematic diagram of the atomizing vacuum mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the finished filter mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the gas processing mechanism of this utility model;

[0025] Figure 5 This is a schematic diagram of the pretreatment device of this utility model;

[0026] Figure label:

[0027] 1-Atomizing vacuum mechanism, 2-Finished product filtration mechanism, 3-Gas processing mechanism, 4-Pretreatment device, 11-Atomizing nozzle, 12-Atomizing input pipe, 13-First liquid level valve, 14-Second liquid level valve, 15-Atomizing mechanism check valve, 16-Atomizing vacuum tank, 17-Atomizing mechanism pump, 21-Filter barrel, 22-Finished product pressure switch, 31-Cooler, 32-Collection box, 33-Gas vacuum mechanism, 34-Gas check valve, 35-Oil-gas separator, 36-Vacuum pump, 41-Primary filtration mechanism, 411-Y-type filter, 412-Primary filter pump, 413-Bag filter, 414-Precision filter, 415-Primary filter pressure switch, 42-Heating mechanism, 421-Heater, 422-Atomizing liquid inlet pump. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] A diesel fuel filtration device includes an atomizing vacuum mechanism 1, a finished product filtration mechanism 2, and a gas processing mechanism 3. The finished product filtration mechanism 2 is connected to the bottom of the atomizing vacuum mechanism 1, and the gas processing mechanism 3 is connected to the top of the atomizing vacuum mechanism 1. An atomizing nozzle 11 is provided at the top inside the atomizing vacuum mechanism 1, and the atomizing nozzle 11 is connected to an atomizing input pipe 12. A first liquid level valve 13 and a second liquid level valve 14 are respectively provided on the inner wall of the atomizing vacuum mechanism 1. The gas processing mechanism 3 includes a cooler 31 and a collection box 32. The top of the atomizing vacuum mechanism 1 is connected to the inlet end of the cooler 31 through an atomizing mechanism check valve 15, and the outlet end of the cooler 31 is connected to the inlet end of the collection box 32. The finished product filtration mechanism 2 is used to filter the oil after atomization and separation treatment by the atomizing vacuum mechanism 1 to obtain the finished product. The gas processing mechanism 3 is used to process the gas separated by atomization in the atomizing vacuum mechanism 1. The first liquid level valve 13 and the second liquid level valve 14 are respectively used to monitor the highest and lowest liquid levels inside the atomizing vacuum mechanism 1. Preferably, the first level valve 13 and the second level valve 14 can be equipped with limit float valves for level monitoring. When the liquid level exceeds a certain height or falls below a certain height, the limit float valve transmits a signal to the equipment, and the equipment stops or starts the operation of some mechanisms, thereby realizing level control. Specific models can be selected as: LG100X-16P-100X stainless steel remote control float valve, F745X explosion-proof float valve, Tyco2600 series high viscosity oil float valve.

[0031] When the diesel filtration device of this utility model is working, the diesel to be filtered is sprayed into the atomizing vacuum tank 16 through the atomizing input pipe 12 and the atomizing nozzle 11. The diesel undergoes vacuum atomization separation in the atomizing vacuum mechanism 1. To achieve the separation function and improve the separation effect, the diesel raw material can be heated, causing the vaporized gas in the atomized diesel to rise, while the heavier oil and sediments fall. The falling oil enters the finished product filtration mechanism 2 for filtration to obtain the finished diesel. The rising gas enters the cooler 31 through the one-way valve 15 of the atomizing mechanism. Taking water vapor as an example, the boiling point of the water contained in the diesel is lowered under vacuum atomization, and it can evaporate into water vapor without reaching the temperature under normal pressure. After being processed by the cooler 31, it enters the collection box 32 for collection. Preferably, a cooling device such as an air cooler or a water cooler can be used, and the collection box 32 is set as a water tank, so that the water vapor is condensed and liquefied by the cooler 31 and collected.

[0032] Throughout the process, the first liquid level valve 13 and the second liquid level valve 14 monitor the liquid level in the atomizing vacuum tank 16 in real time. When the liquid level is below the minimum limit, the equipment stops the subsequent operation of the atomizing vacuum mechanism 1, and no longer outputs oil or gas to avoid damage from idling, until the internal liquid level is above the minimum limit. When the liquid level is above the maximum limit, the front-end operation stops, and no more raw material oil is input to prevent liquid overflow and ensure stable operation of the equipment, until the internal liquid level is below the maximum limit. This invention enables the effective treatment of impurities of different components, improves filtration efficiency and quality, reduces equipment failures caused by impurities, extends equipment life, and ensures safe and stable operation of the equipment, meeting the requirements for high-efficiency diesel filtration. The atomization separation under vacuum also reduces the evaporation temperature requirement for separation, making it easier for the process to meet the temperature requirements and achieve more thorough separation.

[0033] It should be noted that the specific settings of the filter structure used in the finished product filter mechanism 2 of this embodiment can refer to the existing filter processing mechanisms in oil filtration related technologies. For example, a filter element that can filter finer impurities in the oil can be set. By setting the filter pores, the small particles, colloids and other impurities in the oil can be filtered to obtain a clean product. Those skilled in the art can directly apply the existing related filter element technology to the finished product filter mechanism 2 of this application, which will not be elaborated here.

[0034] Example 2

[0035] This embodiment is based on the foregoing embodiments. In this embodiment, as follows: Figure 2As shown, the atomizing vacuum mechanism 1 includes multiple atomizing vacuum canisters 16 connected in sequence. Each atomizing vacuum canister 16 is equipped with an atomizing nozzle 11. Each atomizing vacuum canister 16 is connected to an atomizing mechanism pump 17 at its bottom. The number of atomizing mechanism pumps 17 and atomizing mechanism one-way valves 15 corresponds one-to-one with the number of atomizing vacuum canisters 16. The atomizing vacuum canister 16 located at the end of the sequenced atomizing vacuum canisters 16 is connected to the finished product filtration mechanism 2 through the atomizing mechanism pump 17. The atomizing mechanism pump 17 is used to transport oil between the multiple atomizing vacuum canisters 16 and finally transport the oil from the atomizing vacuum mechanism 1 to the finished product filtration mechanism 2. Figure 2 The present invention provides one configuration of the atomizing vacuum mechanism 1, which involves three atomizing vacuum tanks 16. Each atomizing vacuum tank 16 has a bottom outlet connected to an atomizing pump 17 for sequentially conveying the oil inside. Following the oil conveying sequence, the first two atomizing pumps 17 transfer the oil from one atomizing vacuum tank 16 to the next, while the third atomizing pump 17 conveys the atomized oil to the finished product filtration mechanism 2 for further processing. To prevent the vaporized gas from liquefying and flowing back into the tanks, a one-way valve 15 is installed at the top of each atomizing vacuum tank 16 to allow the vaporized gas to pass through in one direction. This embodiment of the atomizing vacuum mechanism 1 uses multi-stage atomizing vacuum tanks 16 for continuous sequential atomization separation, which further improves the atomization separation effect and results in a cleaner product after filtration.

[0036] Example 3

[0037] This embodiment is based on the foregoing embodiments. In this embodiment, as follows: Figure 4 As shown, the gas processing mechanism 3 also includes a gas vacuum mechanism 33 connected to the outlet end of the collection box 32. The outlet end of the gas vacuum mechanism 33 is connected to the inlet end of a gas one-way valve 34, the outlet end of the gas one-way valve 34 is connected to the inlet end of an oil-gas separator 35, and the outlet end of the oil-gas separator 35 is connected to a vacuum pump 36. The gas vacuum mechanism 33 is used to contain and buffer the gas transport, and the vacuum pump 36 is used to discharge the air separated by the oil-gas separator 35. Figure 4The diagram shows an optional embodiment of the gas processing mechanism 3 of this utility model. The collection box 32 is used to collect water, and the gas vacuum mechanism 33 is provided with two gas vacuum tanks connected in sequence. Liquid is placed in the gas vacuum tanks to continuously absorb the gas. The inlet end of the first gas vacuum tank is connected to the outlet end of the collection box 32. When the pipeline is set, the pipe opening in the collection box 32 is set above the liquid level, while the pipe opening in the first gas vacuum tank is set below the liquid level. The pipeline between the first gas vacuum tank and the second gas vacuum tank is set such that the pipe opening in the first gas vacuum tank is set above the liquid level, and the pipe opening in the second gas vacuum tank is set below the liquid level. Thus, after multiple stages of liquid absorption, the final gas is separated by the oil-gas separator 35, and the remaining clean air is discharged by the vacuum pump 36, which can achieve effective cleaning treatment of the separated gas. At the same time, the gas processing mechanism 3 is also provided with a gas one-way valve 34 to prevent gas backflow and maintain the vacuum degree in the gas vacuum tank.

[0038] Example 4

[0039] This embodiment is based on the foregoing embodiments. In this embodiment, as follows: Figure 3 As shown, the finished product filtration mechanism 2 includes a filter barrel 21 and a finished product pressure switch 22. The finished product pressure switch 22 is connected between the atomizing vacuum mechanism 1 and the filter barrel 21. A membrane separation filtration component is installed inside the filter barrel 21. The finished product pressure switch 22 is used to monitor the pressure inside the filter barrel 21 and trigger an alarm. The membrane separation filtration component is used to filter oil through the membrane separation filter element. When the finished product pressure switch 22 detects that the pressure inside the filter barrel 21 exceeds the warning value, it indicates that the membrane separation filter element is clogged, and the finished product pressure switch 22 triggers an alarm to remind the staff to perform maintenance. As a preferred embodiment, the membrane separation filtration component installed inside the filter barrel 21 in this embodiment can be equipped with a folded membrane element for filtration. The essence of a folded membrane element is that the membrane material increases the filtration area through a folding process, such as polypropylene, polyvinylidene fluoride, etc. It belongs to a type of membrane separation technology and is usually used in microfiltration or ultrafiltration scenarios. It is a core component in filtration equipment, and the filtration accuracy can usually reach 0.1-10μm. This embodiment achieves efficient filtration of oil and automatic monitoring of the filtration process by setting a finished product pressure switch 22 between the atomizing vacuum mechanism 1 and the filter barrel 21, and configuring a membrane separation filter component inside the filter barrel 21. This facilitates quick maintenance by staff and effectively avoids the impact of filter element blockage on oil filtration efficiency and quality. The membrane separation filter component further improves the oil filtration effect and enhances the quality of the finished product.

[0040] Example 5

[0041] This embodiment is based on the foregoing embodiments. In this embodiment, as follows: Figure 5As shown, the diesel filtration equipment also includes a pretreatment device 4, which comprises a primary filter 41 and a heating device 42. The inlet end of the primary filter 41 is connected to the oil inlet pipe, and the outlet end of the primary filter 41 is connected to the inlet end of the heating device 42. The outlet end of the heating device 42 is connected to the atomization input pipe 12 of the atomization vacuum device 1. The primary filter 41 filters solid impurities in the oil, and the heating device 42 heats the oil to the temperature required by the atomization vacuum device 1. This structure achieves step-by-step pretreatment of the oil. The primary filter 41 filters solid impurities in the oil in advance, effectively reducing the risk of clogging of subsequent core filtration components and extending the service life of the equipment. The heating device 42 heats the oil to the temperature required by the atomization vacuum device 1, ensuring the efficiency and stability of subsequent atomization treatment, making the entire filtration process more coherent and smooth, and significantly improving the overall effect of diesel filtration and the operating efficiency of the equipment.

[0042] In a preferred embodiment, the primary filtration mechanism 41 includes a Y-type filter 411, a primary filtration pump 412, a bag filter 413, and a precision filter 414 connected in sequence. A primary filtration pressure switch 415 is also connected between the bag filter 413 and the precision filter 414. The inlet end of the Y-type filter 411 is connected to an oil inlet pipe, and the outlet end of the precision filter 414 is connected to the inlet end of the heating mechanism 42. The primary filtration pressure switch 415 is used to monitor the pressure inside the precision filter 414 and trigger an alarm. Figure 5 For example, after the oil enters the equipment, it first passes through a Y-type filter 411 for preliminary filtration. Then, a primary filter pump 412 draws in two parallel bag filters 413. The precision of the bag filters 413 can be set to 20µm. After filtration by the bag filters 413, the oil passes through a primary filter pressure switch 415 and then enters a precision filter 414. The primary filter pressure switch 415 can be set to stop all operations of the pretreatment device 4 and trigger an alarm if the filter element of the precision filter 414 becomes clogged and the pressure exceeds 0.4 MPa. The precision of the precision filter 414 can be set to 3µm. The precision filter 414 is a common existing filtration device. Its outer shell is generally made of stainless steel, and the internal tubular filter elements are PP melt-blown, wire-sintered, pleated, titanium, activated carbon, etc. Different filter elements are selected according to different filtration media and design processes to achieve the filtration requirements. The precision filter 414 is commonly used for solid-liquid separation of various suspensions and has a wide range of applications, suitable for pharmaceutical, food, chemical, environmental protection, water treatment and other industrial fields. This structure constructs a multi-stage progressive filtration system. The Y-type filter performs initial interception, while the bag filter 413 and precision filter 414 further improve the filtration accuracy, gradually removing impurities and ensuring high oil cleanliness. The pre-filter pressure switch 415 monitors the pressure of the precision filter 414 in real time, effectively preventing equipment damage due to excessive clogging, ensuring the safety and reliability of the pretreatment stage, and providing high-quality oil for subsequent filtration processes.

[0043] In a preferred embodiment, the heating mechanism 42 includes a plurality of heaters 421 connected in sequence, and an atomizing liquid inlet pump 422 is connected between the outlet end and the inlet end of the heating mechanism 42. After the oil has been pre-filtered by the primary filtration mechanism 41, it enters the heating mechanism 42. The heating mechanism 42 can be configured as follows: Figure 5 The three heaters 421 connected in series shown can each be set to a power of 10 kW, heating the oil to 55°C-70°C. The oil then passes through an atomizing inlet pump 422 before entering the atomizing vacuum mechanism 1 for further processing. The series-connected heaters 421 can accurately and stably heat the pre-filtered oil to the ideal temperature range, creating suitable processing conditions for the atomizing vacuum mechanism 1. The atomizing inlet pump 422 ensures stable delivery of the heated oil, guaranteeing the accuracy of temperature parameters and the continuity of delivery, thus improving the equipment's adaptability and processing efficiency.

[0044] The preferred pressure switches used in the different mechanisms of the foregoing embodiments can be specifically selected from the following models: CM-I type differential pressure transmitter, IFM PN7001 pressure switch.

[0045] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A diesel fuel filtration device, characterized in that, The device includes an atomizing vacuum mechanism and a gas processing mechanism. The gas processing mechanism is connected to the top of the atomizing vacuum mechanism. An atomizing nozzle is provided at the top of the atomizing vacuum mechanism, and the atomizing nozzle is connected to an atomizing input pipe. A first liquid level valve and a second liquid level valve are respectively provided on the inner wall of the atomizing vacuum mechanism. The gas processing mechanism includes a cooler and a collection box. The top of the atomizing vacuum mechanism is connected to the inlet end of the cooler through a one-way valve of the atomizing mechanism, and the outlet end of the cooler is connected to the inlet end of the collection box. The gas processing mechanism is used to process the gas separated by atomization in the atomization vacuum mechanism, and the first liquid level valve and the second liquid level valve are used to monitor the highest and lowest liquid levels in the atomization vacuum mechanism, respectively.

2. The diesel fuel filtration device according to claim 1, characterized in that, The atomizing vacuum mechanism includes multiple atomizing vacuum canisters connected in sequence. Each atomizing vacuum canister is equipped with an atomizing nozzle, and each atomizing vacuum canister is connected to an atomizing mechanism pump at its bottom. The number of atomizing mechanism pumps and atomizing mechanism one-way valves corresponds one-to-one with the number of atomizing vacuum canisters. The atomizing mechanism pump is used to transport oil between multiple atomizing vacuum tanks.

3. The diesel fuel filtration device according to claim 1, characterized in that, The gas processing mechanism also includes a gas vacuum mechanism connected to the outlet end of the collection box. The outlet end of the gas vacuum mechanism is connected to the inlet end of a gas one-way valve. The outlet end of the gas one-way valve is connected to the inlet end of an oil-gas separator. The outlet end of the oil-gas separator is connected to a vacuum pump. The gas vacuum mechanism is used to contain and buffer the gas delivery, and the vacuum pump is used to discharge the air separated by the oil-gas separator.

4. A diesel fuel filtration device according to claim 1, characterized in that, It also includes a finished product filtration mechanism, which is connected to the bottom of the atomizing vacuum mechanism. The finished product filtration mechanism includes a filter barrel and a finished product pressure switch. The finished product pressure switch is connected between the atomizing vacuum mechanism and the filter barrel. A membrane separation filtration component is provided inside the filter barrel. The finished product pressure switch is used to monitor the pressure inside the filter barrel and trigger an alarm, and the membrane separation filter assembly is used to filter oil through the membrane separation filter element.

5. A diesel fuel filtration device according to claim 1, characterized in that, It also includes a pretreatment device, which includes a primary filter and a heating device. The inlet end of the primary filter is connected to an oil inlet pipe, the outlet end of the primary filter is connected to the inlet end of the heating device, and the outlet end of the heating device is connected to the atomization input pipe of the atomization vacuum device. The primary filtration mechanism is used to filter solid impurities in the oil, and the heating mechanism is used to heat the oil to the temperature required by the atomizing vacuum mechanism.

6. A diesel fuel filtration device according to claim 5, characterized in that, The primary filtration mechanism includes a Y-type filter, a primary filtration pump, a bag filter, and a precision filter connected in sequence. A primary filtration pressure switch is also connected between the bag filter and the precision filter. The inlet end of the Y-type filter is connected to the oil inlet pipe, and the outlet end of the precision filter is connected to the inlet end of the heating mechanism. The primary filter pressure switch is used to monitor the pressure inside the precision filter and trigger an alarm.

7. A diesel fuel filtration device according to claim 5, characterized in that, The heating mechanism includes multiple heaters connected in sequence, and an atomizing liquid inlet pump is also connected between the outlet end and the inlet end of the heating mechanism.

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