A multi-filtering device for producing fuel oil

Abstract

The invention relates to the field of fuel additive production, and discloses a multiple filtering device for fuel additive production, comprising an oil pump and multiple groups of filtering mechanisms, wherein multiple filtering of the fuel additive is achieved through the cooperation of the multiple groups of filtering mechanisms, wherein the filtering mechanism comprises a lower cylinder shell and an upper cylinder shell, wherein the upper open end of the lower cylinder shell is detachably connected to the lower open end of the upper cylinder shell, and a filtering membrane is arranged at the connection, an upper piston is sleeved in the upper cylinder shell, an upper end surface of the upper piston is connected to an upper piston rod, an upper spring is sleeved on the outer surface of the upper piston rod and is located between the upper piston and the upper closed end of the upper cylinder shell, an oil nozzle is arranged on the outer surface of the upper cylinder shell, and initially, the oil nozzle is located above the upper piston, a lower piston is sleeved in the lower cylinder shell, an input hole and an output hole are penetrated on the end surface of the lower piston, an input valve is arranged in the input hole, a sleeve is connected to the lower orifice of the input hole, a lower orifice of the output hole is connected to a lower piston rod in the shape of a hollow shaft, and an output valve is arranged in the output hole.

Description

Technical Field

[0001] The invention relates to the field of fuel additive production, and in particular to a multi-filtering device for producing fuel additives. Background Art

[0002] Fuel saver is a fuel additive used to improve fuel performance, mainly used in gasoline, diesel, etc. Its production process includes the filtration process. For example, the Chinese invention patent with application publication number CN111876208A discloses a method for preparing a fuel additive vehicle fuel saver, and its step 4 is to filter the mixed liquid C to remove impurities.

[0003] In the prior art, common filtering technologies include filter nets or filter membranes. For example, the above-mentioned prior invention patent uses a ceramic membrane to filter the mixed liquid C. This filtering technology has some shortcomings, such as: 1. As the filtering proceeds, there will inevitably be more and more impurities on the filter membrane, which will cause the filtering performance of the filter membrane to gradually deteriorate with the use time, and the impurities are unevenly distributed, so it is easy for a part of the filter membrane to be blocked by impurities, while another part can still be filtered normally, which will undoubtedly affect the filtering efficiency; 2. The filtering grade of the filter membrane is relatively high, so the liquid passes through the filter membrane at a relatively slow speed, that is, the filtering efficiency is relatively low, which needs to be improved and improved; 3. As the filtering proceeds, since the liquid flows in one direction during filtration, the filter membrane will be subjected to a constant impact force in one direction. Over time, it is easy to cause some filter holes of the filter membrane to be enlarged by the impact, thereby affecting the filtering effect.

[0004] Based on the above, the present invention proposes a multiple filtering device for producing fuel saver. Summary of the invention

[0005] In order to solve the problems mentioned in the above background, the present invention provides a multi-filtering device for producing fuel saver.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0007] A multiple filtering device for producing fuel oil, comprising an oil pump and multiple sets of filtering mechanisms, the filtering mechanisms comprising a lower cylinder shell and an upper cylinder shell, the upper opening end of the lower cylinder shell and the lower opening end of the upper cylinder shell are detachably connected and a filtering membrane is arranged at the connection;

[0008] An upper piston is sleeved inside the upper cylinder shell, an upper piston rod is connected to the upper end surface of the upper piston, an upper spring is sleeved outside the upper piston rod and is located between the upper piston and the upper closed end of the upper cylinder shell, and an oil nozzle is provided on the outer surface of the upper cylinder shell. Initially, the oil nozzle is located above the upper piston;

[0009] A lower piston is sleeved in the lower cylinder shell, an input hole and an output hole are penetrated through the end surface of the lower piston, an input valve is arranged in the input hole, a sleeve is connected to the lower hole opening of the input hole, a lower piston rod in the shape of a hollow shaft is connected to the lower hole opening of the output hole, and an output valve is arranged in the output hole.

[0010] As a further improvement and optimization of the present invention, a first fixed pipeline is provided at the lower closed end of the lower cylinder shell, the sleeve is sleeved in the first fixed pipeline, and the bottom of the first fixed pipeline is connected to an oil inlet pipe;

[0011] A second fixed pipe is arranged in a fixed arrangement below the lower cylinder shell, the bottom of the lower piston rod extends out of the lower cylinder shell and is sleeved outside the second fixed pipe, and a slag discharge pipe is connected to the bottom of the second fixed pipe;

[0012] The outer part of the lower piston rod is provided with a limiting ring located outside the lower cylinder shell, and the outer part of the lower piston rod is sleeved with a lower spring located between the limiting ring and the lower cylinder shell.

[0013] As a further improvement and optimization of the present invention, a mounting groove is provided on the lower end surface of the upper piston, and an ultrasonic transducer is provided in the mounting groove via a rubber pad.

[0014] As a further improvement and optimization of the present invention, a built-in step is provided at the bottom of the cavity of the lower cylinder shell, an air nozzle close to its lower closed end is provided on the outer surface of the lower cylinder shell, and an air hole connected to the air nozzle is provided on the built-in step.

[0015] As a further improvement and optimization of the present invention, the input hole comprises a coaxial lower hole section and an upper hole section of unequal diameters, the hole diameter of the upper hole section is smaller than the hole diameter of the lower hole section and a shaft shoulder is formed;

[0016] The input valve includes a valve tube sleeved in the input hole. Initially, the upper closed end of the valve tube is flush with the upper opening of the input hole. The outer circumferential surface of the valve tube is provided with a plurality of valve holes close to its own upper closed end. The lower open end of the valve tube is provided with an external step. The outer sleeve of the valve tube is provided with a second spring located between the external step and the shaft shoulder.

[0017] As a further improvement and optimization of the present invention, the upper opening of the output hole is set in the shape of a frustum and the diameter of the frustum increases from bottom to top;

[0018] The output valve includes a bracket arranged in the output hole, a valve stem is slidably mounted on the bracket in a vertical direction, a valve plug is arranged at the upper end of the valve stem, a fixing ring located below the bracket is arranged on the outside of the valve stem, and a first spring located between the fixing ring and the bracket is sleeved on the outside of the valve stem. Initially, the elastic force of the first spring makes the outer surface of the valve plug fit with the frustum of the output hole.

[0019] As a further improvement and optimization of the present invention, a telescopic rod is arranged below the second fixed pipe, and the output end of the telescopic rod extends into the second fixed pipe and is close to the bottom of the valve stem.

[0020] As a further improvement and optimization of the present invention, the end of the air nozzle is connected to an air distribution pipe, a three-way valve is provided on the air distribution pipe, the air distribution pipes of multiple groups of filtering mechanisms are connected through a main air pipe and the end of the main air pipe is connected to an air compressor.

[0021] As a further improvement and optimization of the present invention, the end of the oil nozzle is connected to an oil outlet pipe;

[0022] Multiple groups of filtering mechanisms are arranged side by side, and the oil outlet pipes of the filtering mechanisms are connected to the oil inlet pipes of adjacent filtering mechanisms through connecting oil pipes. Among the two groups of filtering mechanisms located on the edge, the oil inlet pipe of one group of filtering mechanisms is connected to the output end of the oil pump through an oil delivery pipe, and the input end of the oil pump is used to receive the fuel additives to be filtered, and the oil outlet pipes of the other group of filtering mechanisms are used to output the fuel additives that have been filtered multiple times.

[0023] As a further improvement and optimization of the present invention, a one-way valve is provided at the connection between the oil nozzle and the oil outlet pipe, and the one-way valve is used to allow the fuel additive in the upper cylinder shell to flow unidirectionally into the oil outlet pipe.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This solution realizes multiple filtration of fuel additives through the cooperation of multiple groups of filtering mechanisms, wherein the filtering process of the fuel additives by the filtering mechanism is one of the cores of this solution. Specifically, referring to the description of the filtering process of the filtering mechanism in the specific implementation manner, it can be known that:

[0026] 1. By the push action of the lower piston, pressure is applied to the fuel additive, thereby accelerating the speed at which the fuel additive passes through the filter membrane, that is, increasing the filtering efficiency. At the same time, since the pressure is applied to the fuel additive by the lower piston, the pressure from the fuel additive on the filter membrane is evenly distributed, and all parts of the filter membrane will participate in the filtering, so that all parts of the filter membrane can be put into use at the same time as much as possible, solving the problems 1 and 2 mentioned in the background technology;

[0027] On this basis, after each filtration of the fuel additive, the filter mechanism will apply a backwash to the filter membrane. The significance of this is that the backwash will wash off the impurities on the filter membrane, and then this part of the impurities will be evenly mixed with the next fuel additive and continue to participate in the filtration, that is, before each filtration, there are basically no impurities on the filter membrane. Although it will increase the impurities in the next fuel additive, compared with the prior art, under the condition that the amount of fuel additive filtered is equal, the filtration efficiency of this solution is higher. Specifically: in the prior art, the impurities on the filter membrane increase with the filtration time, the speed of the fuel additive passing through becomes slower and slower, and the filtration efficiency becomes lower and lower. In this solution, a backwash is performed after each filtration, so that the filter membrane will not be blocked, and the fuel additive can pass through the filter membrane relatively faster, so the filtration efficiency is higher;

[0028] 2. Another benefit of removing impurities on the filter membrane by backflushing each time is that the filter membrane will be penetrated by the fuel additives twice in opposite directions each time filtering occurs. Therefore, the problem 3 mentioned in the background technology will not exist. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the filtering mechanism;

[0031] Figure 3 Cross-section of the filter mechanism Figure 1 ;

[0032] Figure 4 Cross-section of the filter mechanism Figure 2 ;

[0033] Figure 5 is a cross-sectional view of the upper cylinder shell;

[0034] Figure 6 It is a partial cross-sectional view of the lower shell;

[0035] Figure 7 is a cross-sectional view of the lower piston, the input valve and the output valve;

[0036] Figure 8 Partial cross-section of the filter mechanism Figure 1 ;

[0037] Fig. 9 Partial cross-section of the filter mechanism Figure 2 .

[0038] The reference numerals in the accompanying drawings are:

[0039] 100, filtering mechanism; 101, lower cylinder shell; 1011, air nozzle; 102, upper cylinder shell; 1021, oil nozzle; 103, oil inlet pipe; 104, oil outlet pipe; 105, slag discharge pipe; 106, upper piston; 107, upper piston rod; 108, upper spring; 109, lower piston; 110, lower piston rod; 111, lower spring; 112, filter membrane; 113, ultrasonic transducer; 114, first fixed pipeline; 115, sleeve; 116, second fixed pipeline; 117, valve plug; 118, valve stem; 119, first spring; 120, bracket; 121, valve pipe; 122, valve hole; 123, second spring; 124, telescopic rod; 200, oil pump; 201, oil delivery pipe; 202, connecting oil pipe; 203, main air pipe; 204, air distribution pipe. DETAILED DESCRIPTION

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0041] Reference Figure 1-Figure 9 A multiple filtering device for producing fuel additives includes an oil pump 200 and a plurality of filter mechanisms 100 arranged side by side. The filter mechanisms 100 are used to filter the fuel additives (i.e., fuel additives). The filter levels in the plurality of filter mechanisms 100 are different, thereby achieving multiple filtering of the fuel additives with better filtering effects. The oil pump 200 is used to pull the fuel additives to flow in the plurality of filter mechanisms 100.

[0042] Filter mechanism 100:

[0043] Reference Figure 2-Figure 9 The filter mechanism 100 includes a lower shell 101 and an upper shell 102 that are detachably connected. Further, the upper open end of the lower shell 101 is detachably connected to the lower open end of the upper shell 102, for example, by bolts, and a filter membrane 112 is provided at the connection.

[0044] Reference Figure 3-Figure 5 An upper piston 106 is sleeved in the upper cylinder shell 102, and an upper piston rod 107 is connected to the upper end surface of the upper piston 106. The outer sleeve of the upper piston rod 107 is provided with an upper spring 108 located between the upper piston 106 and the upper closed end of the upper cylinder shell 102. An oil nozzle 1021 is provided on the outer surface of the upper cylinder shell 102. Initially, the oil nozzle 1021 is located above the upper piston 106. In a preferred embodiment, a mounting groove is provided on the lower end surface of the upper piston 106, and an ultrasonic transducer 113 is provided in the mounting groove through a rubber pad.

[0045] Reference Figure 3 , Figure 4 and Figure 6-Figure 9A lower piston 109 is sleeved in the lower cylinder shell 101, a built-in step is provided at the bottom of the cavity of the lower cylinder shell 101, an air nozzle 1011 close to its lower closed end is provided on the outer surface of the lower cylinder shell 101, an air hole connected with the air nozzle 1011 is provided on the built-in step, compressed air enters the lower cylinder shell 101 through the air nozzle 1011 and the air hole, and can push the lower piston 109 to move upward.

[0046] An input hole and an output hole are provided through the end surface of the lower piston 109, wherein an input valve is provided in the input hole, a sleeve 115 is connected to the lower hole opening of the input hole, a lower piston rod 110 in the shape of a hollow shaft is connected to the lower hole opening of the output hole, and an output valve is provided in the output hole.

[0047] A first fixed pipe 114 is disposed at the lower closed end of the lower cylinder shell 101 . A sleeve 115 is sleeved in the first fixed pipe 114 . The bottom of the first fixed pipe 114 is connected to an oil inlet pipe 103 .

[0048] A second fixed pipe 116 is fixedly arranged below the lower cylinder shell 101 . The bottom of the lower piston rod 110 extends out of the lower cylinder shell 101 and is sleeved on the outside of the second fixed pipe 116 . The bottom of the second fixed pipe 116 is connected to a slag discharge pipe 105 .

[0049] The outside of the lower piston rod 110 is provided with a limiting ring located outside the lower cylinder shell 101, and the outside of the lower piston rod 110 is sleeved with a lower spring 111 located between the limiting ring and the lower cylinder shell 101; when the compressed air pushes the lower piston 109 to move upward, the lower spring 111 is compressed, and when the push is cancelled, the lower spring 111 releases the elastic force to move the lower piston 109 downward.

[0050] Input valve: Refer to Figure 7 The input hole includes a coaxial lower hole section and an upper hole section of unequal diameters. The aperture of the upper hole section is smaller than that of the lower hole section and is formed with a shaft shoulder. The input valve includes a valve tube 121 sleeved in the input hole. Initially, the upper closed end of the valve tube 121 is flush with the upper hole opening of the input hole. The outer circumferential surface of the valve tube 121 is provided with a plurality of valve holes 122 close to its own upper closed end. The lower open end of the valve tube 121 is provided with an external step. The outer sleeve of the valve tube 121 is provided with a second spring 123 located between the external step and the shaft shoulder.

[0051] The filtering process of the fuel additive by the filtering mechanism 100 is specifically as follows:

[0052] The fuel additive flows into the valve tube 121 through the first fixed pipe 114 and the sleeve 115. At the beginning, since the valve hole 122 is blocked by the upper hole section, the fuel additive will push the valve tube 121 upward, and the second spring 123 will be compressed. When the valve hole 122 is connected with the area above the lower piston 109, the fuel additive can flow into the lower cylinder shell 101 through the valve hole 122. After a preset time, the lower cylinder shell 101 is filled with the fuel additive, and the fuel additive stops flowing. The second spring 123 releases its elastic force, which enables the valve tube 121 to move downward and close. Then, the compressed air pushes the lower piston 109 upward, pushing the fuel additive upward, and the fuel additive will pass through the filter membrane 112 and enter the upper cylinder shell 102, and push the upper piston 106 upward, and the impurities will remain on the filter membrane 112. When the upper piston 106 moves upward and is higher than the nozzle 1021, the fuel additive that has been filtered in the upper cylinder shell 102 is discharged outward through the nozzle 1021.

[0053] When the lower piston 109 reaches the maximum upward height, the compressed air supply stops, and the lower spring 111 and the upper spring 108 begin to release their elastic force. During the release process, when the upper piston 106 is lower than the oil nozzle 1021, the fuel additives remaining in the upper cylinder shell 102 are pushed by the upper piston 106 to pass through the filter membrane 112, so as to realize the recoil of the filter membrane 112, and recoil the impurities on the filter membrane 112. The fuel additives and the impurities are mixed together and located in the lower cylinder shell 101. In this process, since the resistance to the downward movement of the lower piston 109 is significantly smaller than the resistance to the downward movement of the upper piston 106, the lower piston 109 will be quickly reset. Therefore, when the fuel additives and impurities fall into the lower cylinder shell 101, they collide with the lower piston 109 under the action of gravity, and there is a stirring effect, so that the impurities are evenly distributed in the fuel additives.

[0054] After that, repeat the above process to filter the fuel additives for the next time, and repeat this process over and over again. The benefits are:

[0055] 1. The fuel additive is pressed by the push action of the lower piston 109, so that the speed at which the fuel additive passes through the filter membrane 112 can be accelerated, that is, the filtering efficiency can be increased. At the same time, since the pressure is applied to the fuel additive by the lower piston 109, the pressure from the fuel additive on the filter membrane 112 is evenly distributed, and each part of the filter membrane 112 will participate in the filtering, so that each part of the filter membrane 112 can be put into use at the same time as much as possible, thereby solving the problems 1 and 2 mentioned in the background technology;

[0056] On this basis, after each filtration of the fuel additive by the filtration mechanism 100, a backwash is applied to the filter membrane 112. The significance of this is that the backwash will wash off the impurities on the filter membrane 112, and then this part of the impurities will be evenly mixed with the next fuel additive and continue to participate in the filtration, that is, before each filtration, there are basically no impurities on the filter membrane 112. Although it will cause more and more impurities in the next fuel additive, compared with the prior art, under the condition that the amount of filtered fuel additive is equal, the filtration efficiency of this solution is higher. Specifically: in the prior art, the impurities in the filter membrane 112 increase with the filtration time, the speed at which the fuel additive passes through becomes slower and slower, and the filtration efficiency becomes lower and lower. In this solution, a backwash is performed after each filtration, so that the filter membrane 112 will not be blocked, and the fuel additive can pass through the filter membrane 112 relatively faster, and the filtration efficiency is higher.

[0057] 2. Another benefit of removing impurities on the filter membrane 112 by backflushing each time is that the filter membrane 112 will be penetrated by the fuel additive twice in opposite directions during each filtration, so the problem 3 mentioned in the background technology will not exist.

[0058] Output valve: Refer to Figure 7-Figure 9 The upper opening of the output hole is set in a frustum shape and the diameter of the frustum increases from bottom to top.

[0059] The output valve includes a bracket 120 arranged in the output hole, a valve stem 118 is slidably mounted on the bracket 120 in a vertical direction, a valve plug 117 is arranged on the upper end of the valve stem 118, a fixing ring located below the bracket 120 is arranged on the outside of the valve stem 118, and a first spring 119 located between the fixing ring and the bracket 120 is sleeved on the outside of the valve stem 118. Initially, the elastic force of the first spring 119 causes the valve stem 118 to have a downward movement tendency, so that the outer surface of the valve plug 117 fits with the frustum of the output hole, the output valve is closed, and the upper orifice of the output hole is blocked.

[0060] A telescopic rod 124 is provided below the second fixed pipe 116, and the output end of the telescopic rod 124 extends into the second fixed pipe 116 and is close to the bottom of the valve stem 118. The telescopic rod 124 can adopt electric telescopic rod technology or hydraulic rod technology, etc. The hydraulic rod technology is shown in the attached drawings of this scheme and will not be elaborated on.

[0061] After the filter membrane 112 has been used for a long time, the accumulated impurities are relatively more. At this time, the filtering is suspended, and the valve stem 118 is pushed upward by the telescopic rod 124 to move the valve plug 117 upward, the upper orifice of the output hole is opened, and the mixed liquid of the impurities and the fuel additive in the lower shell 101 is discharged outward through the output hole, the lower piston rod 110, the second fixed pipeline 116, and the slag discharge pipe 105 in sequence. After the discharge is completed, the telescopic rod 124 moves downward, the first spring 119 releases the elastic force, the output valve is reset, the output hole is blocked again, and the filtering can continue;

[0062] When the filter membrane 112 is damaged, the upper shell 102 and the lower shell 101 can be disassembled, and a new filter membrane 112 can be replaced, and then the upper shell 102 and the lower shell 101 can be reassembled.

[0063] The connection relationship between the multiple groups of filtering mechanisms 100 is as follows:

[0064] Reference Figure 1 The filtering device also includes a main air pipe 203 and an air compressor connected to the main air pipe 203. The main air pipe 203 is connected to the air nozzle 1011 of the filtering mechanism 100 through a branch air pipe 204. The branch air pipe 204 is correspondingly provided with multiple three-way valves. The three-way valve is a prior art and will not be described in detail.

[0065] Reference Figure 1 The end of the oil nozzle 1021 is connected to the oil outlet pipe 104 and preferably, a one-way valve is provided at the connection, and the one-way valve is used to allow the fuel additive in the upper cylinder shell 102 to flow into the oil outlet pipe 104 in one direction.

[0066] A plurality of filter mechanisms 100 are arranged side by side, and the oil outlet pipe 104 of the filter mechanism 100 is connected to the oil inlet pipe 103 of the adjacent filter mechanism 100 via a connecting oil pipe 202. Among the two groups of filter mechanisms 100 located at the edge, the oil inlet pipe 103 of one group of filter mechanisms 100 is connected to the output end of the oil pump 200 via an oil delivery pipe 201, and the input end of the oil pump 200 is used to receive the fuel additive to be filtered, and the oil outlet pipe 104 of the other group of filter mechanisms 100 is used to output the fuel additive that has completed multiple filtrations.

[0067] The fuel additive to be filtered is drawn to the first group of filtering mechanisms 100 by the oil pump 200. After the first filtering, the fuel additive will flow into the second group of filtering mechanisms 100, and so on. After multiple filterings, the fuel additive is output to the outside through the oil outlet pipe 104 of the last group of filtering mechanisms 100. The filtering process of each group of filtering mechanisms 100 is the same, except that the filtering grade of the filter membrane 112 used increases along the flow direction of the fuel additive.

[0068] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A multiple filtering device for producing fuel saver, comprising an oil pump (200) and multiple sets of filtering mechanisms (100), characterized in that: The filtering mechanism (100) comprises a lower cylindrical shell (101) and an upper cylindrical shell (102); the upper opening end of the lower cylindrical shell (101) and the lower opening end of the upper cylindrical shell (102) are detachably connected, and a filtering membrane (112) is provided at the connection; An upper piston (106) is sleeved inside the upper cylinder shell (102), an upper piston rod (107) is connected to the upper end surface of the upper piston (106), an upper spring (108) is sleeved outside the upper piston rod (107) and is located between the upper piston (106) and the upper closed end of the upper cylinder shell (102), and an oil nozzle (1021) is provided on the outer surface of the upper cylinder shell (102). Initially, the oil nozzle (1021) is located above the upper piston (106); A lower piston (109) is sleeved in the lower cylinder shell (101), an input hole and an output hole are penetrated through the end surface of the lower piston (109), an input valve is arranged in the input hole, a sleeve (115) is connected to the lower hole opening of the input hole, a lower piston rod (110) in the shape of a hollow shaft is connected to the lower hole opening of the output hole, and an output valve is arranged in the output hole; A first fixed pipe (114) is provided at the lower closed end of the lower cylinder shell (101), a sleeve (115) is sleeved in the first fixed pipe (114), and an oil inlet pipe (103) is connected to the bottom of the first fixed pipe (114); A second fixed pipe (116) is fixedly arranged below the lower cylinder shell (101); the bottom of the lower piston rod (110) extends out of the lower cylinder shell (101) and is sleeved on the outside of the second fixed pipe (116); and the bottom of the second fixed pipe (116) is connected to a slag discharge pipe (105); The lower piston rod (110) is provided with a limit ring located outside the lower cylinder shell (101) on its exterior, and the lower piston rod (110) is sleeved with a lower spring (111) located between the limit ring and the lower cylinder shell (101) on its exterior; The cavity bottom of the lower cylindrical shell (101) is provided with a built-in step, the outer surface of the lower cylindrical shell (101) is provided with a gas nozzle (1011) close to the lower closed end thereof, and the built-in step is provided with a gas hole connected to the gas nozzle (1011).

2. The multi-filtration equipment for producing fuel saver according to claim 1, characterized in that: The lower end surface of the upper piston (106) is provided with a mounting groove, and an ultrasonic transducer (113) is arranged in the mounting groove via a rubber pad.

3. The multi-filtration equipment for producing fuel saver according to claim 1, characterized in that: The input hole comprises a coaxial lower hole section and an upper hole section with different diameters, wherein the hole diameter of the upper hole section is smaller than the hole diameter of the lower hole section and a shaft shoulder is formed; The input valve comprises a valve tube (121) sleeved in the input hole. Initially, the upper closed end of the valve tube (121) is flush with the upper opening of the input hole. The outer circumferential surface of the valve tube (121) is provided with a plurality of valve holes (122) close to the upper closed end thereof. The lower open end of the valve tube (121) is provided with an external step. The outer portion of the valve tube (121) is sleeved with a second spring (123) located between the external step and the shaft shoulder.

4. The multi-filtration equipment for producing fuel saver according to claim 3, characterized in that: The upper opening of the output hole is set in a frustum shape and the diameter of the frustum increases from bottom to top; The output valve comprises a bracket (120) arranged in the output hole, a valve stem (118) is slidably mounted on the bracket (120) in a vertical direction, a valve plug (117) is arranged at the upper end of the valve stem (118), a fixing ring located below the bracket (120) is arranged outside the valve stem (118), and a first spring (119) located between the fixing ring and the bracket (120) is sleeved outside the valve stem (118), and initially, the elastic force of the first spring (119) causes the outer surface of the valve plug (117) to fit with the round table surface of the output hole.

5. The multi-filtration equipment for producing fuel saver according to claim 4, characterized in that: A telescopic rod (124) is provided below the second fixed pipe (116), and an output end of the telescopic rod (124) extends into the second fixed pipe (116) and is close to the bottom of the valve stem (118).

6. The multi-filtration equipment for producing fuel saver according to claim 1, characterized in that: The end of the air nozzle (1011) is connected to an air distribution pipe (204), and a three-way valve is provided on the air distribution pipe (204). The air distribution pipes (204) of the plurality of groups of filtering mechanisms (100) are connected via a main air pipe (203), and the end of the main air pipe (203) is connected to an air compressor.

7. The multi-filtration equipment for producing fuel saver according to claim 4, characterized in that: The end of the oil nozzle (1021) is connected to an oil outlet pipe (104); A plurality of groups of filter mechanisms (100) are arranged side by side, and the oil outlet pipes (104) of the filter mechanisms (100) are connected to the oil inlet pipes (103) of adjacent filter mechanisms (100) via connecting oil pipes (202). In the two groups of filter mechanisms (100) located at the edge, the oil inlet pipe (103) of one group of filter mechanisms (100) is connected to the output end of the oil pump (200) via an oil delivery pipe (201), and the input end of the oil pump (200) is used to receive the fuel additive to be filtered, and the oil outlet pipes (104) of the other group of filter mechanisms (100) are used to output the fuel additive that has been filtered multiple times.

8. The multi-filtration equipment for producing fuel saver according to claim 7, characterized in that: A one-way valve is provided at the connection between the oil nozzle (1021) and the oil outlet pipe (104), and the one-way valve is used to allow the fuel additive in the upper cylinder shell (102) to flow into the oil outlet pipe (104) in one direction.

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