Urea solution for vehicle processing with ultra-pure filter

Abstract

The utility model belongs to the field of vehicle -used urea processing, especially relate to a kind of super-pure filter for vehicle -used urea solution processing.The utility model provides a kind of super-pure filter for vehicle -used urea solution processing, comprising: barrel, two ends opening are arranged, bottom end is equipped with bottom cover, top end is equipped with top cover;Filter mechanism is set in barrel inner chamber, for filtering urea solution, the filter mechanism includes: three filter drums, three are sequentially nested, the diameter of three filter drums is different and filter hole aperture gradually decreases from outside to inside;Three helical vanes are respectively fixed on the outside of three filter drums, and the outside of helical vane is respectively in contact with the inner wall of barrel and filter drum inner wall, when filtering urea, three-stage gradient filter drum disperses impurity filtering pressure, reduces single-stage blockage;Helical vane guides solution spiral flow, reduces impurity adsorption accumulation, reduces filtering resistance, delays flow attenuation, prolongs cleaning replacement period, reduces downtime maintenance, improves filtering efficiency and super-pure precision.

Description

Technical Field

[0001] This utility model belongs to the field of automotive urea processing, and in particular relates to an ultrapure filter for automotive urea solution processing. Background Technology

[0002] In the processing of automotive urea solution, ultrapure filtration is a key step in ensuring product quality. It is necessary to remove trace amounts of particulate matter, metal ions, and organic impurities from the solution to avoid clogging the SCR system nozzles or affecting catalytic efficiency. However, in the use of existing filters, the filter screen surface easily adsorbs fine impurities. These impurities accumulate over time and gradually clog the filter screen pores, leading to increased filtration resistance and reduced flow rate. This not only reduces filtration efficiency and ultrapure precision but also requires frequent shutdowns for disassembly, cleaning, or replacement of the filter screen, increasing maintenance costs and production downtime. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned technical problems by providing an ultrapure filter for automotive urea solution processing. This filter uses a three-stage gradient filter cartridge to disperse impurity filtration pressure, reducing single-stage clogging. The spiral blades guide the solution in a spiral flow, reducing impurity adsorption and accumulation, lowering filtration resistance, delaying flow decay, extending cleaning and replacement cycles, reducing downtime maintenance, and improving filtration efficiency and ultrapure precision.

[0004] In view of this, the present invention provides an ultrapure filter for processing automotive urea solution, comprising:

[0005] The cylindrical body has openings at both ends, a bottom cover at the bottom end, and a top cover at the top end.

[0006] A filtration mechanism, disposed within the inner cavity of the cylinder, is used to filter urea solution. The filtration mechanism includes:

[0007] Three filter cartridges are nested together in sequence. The diameters of the three filter cartridges are different and the pore diameter decreases from the outside to the inside.

[0008] Three spiral blades are fixed to the outside of the three filter cartridges respectively, and the outside of the spiral blades abut against the inner wall of the cartridge and the inner wall of the filter cartridge respectively;

[0009] The feed pipe is located on one side of the top of the top cover and is connected to the gap between the cylinder and the outermost filter cylinder.

[0010] In this technical solution, the three-stage gradient filter cartridge disperses the filtration pressure of impurities, reducing single-stage clogging; the spiral blades guide the spiral flow of the solution, reducing the adsorption and accumulation of impurities, lowering filtration resistance, delaying flow decay, extending the cleaning and replacement cycle, reducing downtime maintenance, and improving filtration efficiency and ultrapure precision.

[0011] Furthermore, a drain pipe extends through the center of the bottom end of the bottom cover, and the drain pipe is connected to the center of the innermost filter cartridge of the three filter cartridges.

[0012] In this technical solution, the drain pipe is directly connected to the inner filter cartridge, which can quickly discharge the filtrate, avoid stagnation that leads to secondary deposition of impurities, maintain stable filtration flow, reduce filter cartridge clogging, and reduce maintenance requirements.

[0013] Furthermore, support rods are fixedly connected to the four corners of the bottom of the bottom cover, and a chassis is fixedly connected between the bottoms of the four support rods.

[0014] In this technical solution, the support rod and the chassis form a stable support, reducing the interference of equipment shaking on the filtration mechanism, ensuring the sealing of the filter cartridge and blades and the stability of the filtration path, reducing production interruptions caused by equipment instability, and facilitating maintenance and operation.

[0015] Furthermore, a first fixing bolt passes through the top of the top cover, and the first fixing bolt is threadedly connected to the top surface of the cylinder.

[0016] In this technical solution, the first fixing bolt enables quick assembly and disassembly of the top cover and the cylinder through threaded connection, which facilitates opening the top cover to clean or maintain the internal filter mechanism, reduces downtime for disassembly, and reduces production interruptions caused by frequent maintenance.

[0017] Furthermore, four sets of second fixing bolts penetrate the bottom of the bottom cover, and the four sets of second fixing bolts are respectively threaded to the bottom of the cylinder and the bottom surface of the three filter cylinders.

[0018] In this technical solution, the second fixing bolt can securely connect the bottom cover, cylinder and filter cartridge, while the threaded structure allows for individual disassembly of each component, facilitating targeted cleaning or replacement of the filter cartridge, avoiding overall disassembly, and reducing maintenance operation time and costs.

[0019] Furthermore, three rubber rings are fixedly connected to the end of the top cover away from the first fixing bolt, and all three rubber rings are elastic.

[0020] In this technical solution, the elastic rubber ring can enhance the sealing performance between the top cover and the top of the filter cartridge, preventing solution leakage or impurities from entering during the filtration process.

[0021] The beneficial effects of this utility model are:

[0022] 1. This utility model disperses the filtration pressure of impurities through a three-stage gradient filter cartridge, reducing single-stage clogging; the spiral blades guide the spiral flow of the solution, reducing the adsorption and accumulation of impurities, lowering filtration resistance, delaying flow decay, extending the cleaning and replacement cycle, reducing downtime maintenance, and improving filtration efficiency and ultrapure precision.

[0023] 2. This utility model achieves quick assembly and disassembly of the top cover and the cylinder body by means of a first fixing bolt connected by a threaded connection. With the second fixing bolt, the bottom cover, the cylinder body and the filter cartridge can be securely connected. At the same time, the threaded structure allows for individual disassembly of each component, which is convenient for targeted cleaning or replacement of the filter cartridge, avoiding overall disassembly and reducing maintenance operation time and cost. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the vessel structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the liquid supply device and detection device for the vessel body of this utility model;

[0027] Figure 4 This is a schematic diagram of the internal cross-section of the vessel body of this utility model;

[0028] Figure 5 This is a structural schematic diagram of the lifting device of this utility model.

[0029] In the diagram: 1. Cylinder; 11. Bottom cover; 12. Support rod; 13. Chassis; 14. Drain pipe; 15. Top cover; 16. First fixing bolt; 2. Feed pipe; 3. Filter cartridge; 31. Spiral blade; 4. Rubber ring; 5. Second fixing bolt. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0031] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0032] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0033] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0034] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0035] Example 1:

[0036] like Figure 1-3 As shown, this utility model provides an ultrapure filter for processing automotive urea solution, comprising:

[0037] The cylindrical body 1 has openings at both ends, a bottom cover 11 at the bottom end, and a top cover 15 at the top end;

[0038] A filtration mechanism, disposed within the inner cavity of the cylinder 1, is used to filter urea solution. The filtration mechanism includes:

[0039] Three filter cartridges 3 are nested together in sequence. The diameters of the three filter cartridges 3 are different and the pore diameter decreases from the outside to the inside.

[0040] Three spiral blades 31 are fixed to the outside of the three filter cylinders 3 respectively, and the outside of the spiral blades 31 abuts against the inner wall of the cylinder 1 and the inner wall of the filter cylinder 3 respectively.

[0041] The feed pipe 2 is located on one side of the top of the top cover 15 and is connected to the gap between the cylinder 1 and the outermost filter cylinder 3.

[0042] A multi-stage filtration structure is formed by three filter cartridges 3 with different diameters and progressively smaller pore sizes from the outside to the inside. The outer filter cartridge 3 first intercepts larger impurities, while the inner filter cartridge 3 specifically filters fine impurities. This disperses the filtration load, reduces the accumulation rate of impurities on a single filter screen, and slows down pore clogging. The spiral blades 31 guide the solution to flow spirally along the cylinder wall and the surface of the filter cartridge 3, enhancing the scouring force of the solution on the surface of the filter cartridge 3, reducing the adsorption and retention of fine impurities, and lowering the risk of increased filtration resistance and flow rate decline. This maintains filtration efficiency and ultrapure precision, reduces the number of times the machine needs to be shut down for cleaning or replacing the filter screen due to clogging, and lowers maintenance costs and production downtime.

[0043] A drain pipe 14 extends through the center of the bottom end of the bottom cover 11, and the drain pipe 14 is connected to the center of the innermost filter cylinder 3 of the three filter cylinders 3.

[0044] The drain pipe 14 is connected to the middle of the innermost filter cartridge 3, which ensures that the solution is discharged in a concentrated manner after being filtered in three stages, avoiding the mixing of unfiltered or insufficiently filtered solution and ensuring the ultrapurity of the filtered solution. At the same time, this structure allows the solution to form a complete flow path from the outside to the inside in the filter cartridge 3, reducing solution residue, maintaining a stable filtration flow rate, delaying the flow rate decline caused by local blockage, and reducing maintenance requirements.

[0045] Support rods 12 are fixedly connected to the four corners of the bottom of the bottom cover 11, and a chassis 13 is fixedly connected between the bottoms of the four support rods 12.

[0046] The support rod 12 and the chassis 13 form a stable support structure, which can firmly support the cylinder 1 and the internal filtration mechanism, and prevent the relative position of the filter cylinder 3, the spiral blade 31 and the cylinder 1 from shifting due to vibration during equipment operation. This ensures a stable filtration path and consistent rinsing effect, reduces wear of the filter cylinder 3 or increased impurity adsorption caused by structural shaking, extends the service life of the filter cylinder 3, reduces the decrease in filtration efficiency and maintenance frequency caused by equipment instability, and indirectly reduces production downtime.

[0047] Example 2:

[0048] like Figure 3 and Figure 4 As shown, a first fixing bolt 16 passes through the top of the top cover 15, and the first fixing bolt 16 is threadedly connected to the top surface of the cylinder 1.

[0049] The first fixing bolt 16 is threaded to the top of the cylinder 1, which enables a stable connection between the top cover 15 and the cylinder 1. At the same time, it facilitates quick disassembly of the top cover 15. When the filter cartridge 3 needs to be cleaned or replaced, the cylinder 1 can be opened without complicated operations, reducing downtime for disassembly, reducing the impact of maintenance on production, and alleviating the production interruption problem caused by frequent downtime for maintenance of existing filters.

[0050] The bottom of the bottom cover 11 has four sets of second fixing bolts 5 passing through it. The four sets of second fixing bolts 5 are respectively threaded to the bottom of the cylinder 1 and the bottom surface of the three filter cylinders 3.

[0051] The bottom cover 11, cylinder 1 and the bottom of the three filter cartridges 3 can be firmly connected by the second fixing bolt 5, ensuring that the filter cartridges 3 are stable in position during filtration and avoiding shaking caused by solution impact, which would affect the filtration path and efficiency. At the same time, the threaded connection makes it easy to disassemble the bottom cover 11 or a certain filter cartridge 3 individually, allowing for targeted cleaning or replacement of clogged filter cartridges 3 without overall disassembly, reducing maintenance steps and time, and lowering maintenance costs.

[0052] Three rubber rings 4 are fixedly connected to the end of the top cover 15 away from the first fixing bolt 16, and all three rubber rings 4 are elastic.

[0053] The elastic rubber ring 4 can fill the gap between the top cover 15 and the top of the cylinder 1 and the filter cylinder 3 to form a good seal, preventing unfiltered urea solution from leaking from the gap and bypassing the filter cylinder 3 to directly enter the subsequent process, ensuring that the solution has undergone multi-stage filtration and improving ultrapure precision.

[0054] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An ultrapure filter for processing automotive urea solution, characterized in that, include: The cylinder (1) has openings at both ends, a bottom cover (11) at the bottom end, and a top cover (15) at the top end; A filtration mechanism, disposed within the inner cavity of the cylinder (1), is used to filter urea solution. The filtration mechanism includes: Three filter cartridges (3) are nested together in sequence. The diameters of the three filter cartridges (3) are different and the pore diameter decreases from the outside to the inside. Three spiral blades (31) are fixed to the outside of the three filter cylinders (3), and the outside of the spiral blades (31) abuts against the inner wall of the cylinder (1) and the inner wall of the filter cylinder (3), respectively. The feed pipe (2) is located on one side of the top of the top cover (15) and is connected to the gap between the cylinder (1) and the outermost filter cylinder (3).

2. The ultrapure filter for processing automotive urea solution according to claim 1, characterized in that, A drain pipe (14) is inserted through the middle of the bottom end of the bottom cover (11), and the drain pipe (14) is connected to the middle of the innermost filter cylinder (3) of the three filter cylinders (3).

3. The ultrapure filter for processing automotive urea solution according to claim 1, characterized in that, Support rods are fixedly connected to the four corners of the bottom of the bottom cover (11), and a chassis (13) is fixedly connected between the bottoms of the four support rods.

4. The ultrapure filter for processing automotive urea solution according to claim 1, characterized in that, The top of the top cover (15) is provided with a first fixing bolt (16), which is threadedly connected to the top surface of the cylinder (1).

5. The ultrapure filter for processing automotive urea solution according to claim 1, characterized in that, The bottom of the bottom cover (11) is provided with four sets of second fixing bolts (5), which are threadedly connected to the bottom of the cylinder (1) and the bottom surfaces of the three filter cylinders (3).

6. The ultrapure filter for processing automotive urea solution according to claim 1, characterized in that, The top cover (15) is fixedly connected to three rubber rings (4) at the end away from the first fixing bolt (16), and all three rubber rings (4) are elastic.

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