Cured paper environment-friendly filter inner core structure

Abstract

The utility model relates to the technical field of environment-friendly filter inner cores, and provides a cured paper environment-friendly filter inner core structure which comprises a central pipe and a filter paper cylinder arranged on the central pipe in a sleeving mode, and the central pipe is provided with a plurality of axially-distributed material through grooves. The supporting pipe is arranged in the center pipe and provided with a plurality of filter holes distributed in the circumferential direction, and the filter holes communicate with the material passing groove. The central pipe is also provided with a positioning groove which is communicated with the central pipe; the positioning boss is arranged on the outer wall of the supporting pipe and matched with the positioning groove in a clamped mode. By means of the technical scheme, the problems that in the prior art, the center pipe shakes in the filter paper cylinder, and the supporting effect of the center pipe on the filter paper cylinder is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmentally friendly filter cores, and in particular to a cured paper environmentally friendly filter core structure. Background Art

[0002] The oil filter is a key component in the engine lubrication system. Its main function is to filter out various harmful impurities contained in the oil during engine operation, keep the oil clean, and ensure that all internal components of the engine are effectively lubricated and protected.

[0003] The filter core is an important part of the oil filter. Its structure mainly includes: upper end cover and lower end cover. The upper end cover and the lower end cover are symmetrically arranged. The two ends of the filter paper cylinder are respectively bonded and connected with the upper end cover and the lower end cover. It is sleeved on the central tube inside the filter paper cylinder. The central tube has several axially distributed feed grooves. Its working form is: the engine oil enters the outer periphery of the filter paper cylinder inside the filter from the outside. The filter paper cylinder can filter the impurities in the engine oil. The filtered engine oil flows into the center tube through the feed groove in the center tube, and then flows into the main oil channel of the engine through the discharge end of the upper end cover for lubrication.

[0004] The filter paper cartridge is made of solidified paper material. It usually has high strength, hardness and corrosion resistance, and can adapt to complex working conditions while maintaining good filtering performance. Existing solidified paper environmental filters have the following defects when in use: 1. The central tube set in the filter paper cartridge will shake during use, affecting the user's experience; 2. The central tube has a low supporting effect on the filter paper cartridge. After long-term use, the filter paper cartridge will be damaged and lose its filtering function, affecting the filtering effect of the engine oil. Utility Model Content

[0005] The utility model provides a solidified paper environmentally friendly filter inner core structure, which solves the problems in the related art that the central tube shakes in the filter paper cylinder and the supporting effect of the central tube on the filter paper cylinder is low.

[0006] The technical solution of the utility model is as follows:

[0007] A cured paper environmentally friendly filter inner core structure comprises a filter paper upper cover, a filter paper lower cover symmetrically arranged with the filter paper upper cover, a filter paper cylinder with two ends respectively bonded to the filter paper upper cover and the filter paper lower cover, and a central tube sleeved in the filter paper cylinder, the central tube is used to support the filter paper cylinder, the central tube has a plurality of axially distributed feed troughs; a support tube sleeved in the central tube, the support tube has a plurality of circumferentially distributed filter holes, the filter holes are connected with the feed troughs, the filter paper upper cover has a feed end, the feed end is connected with the support tube, and the filter paper lower cover has a discharge end, the discharge end is connected with the support tube.

[0008] Optionally, the central tube further has a positioning groove, and the positioning groove is communicated with the central tube; further comprising:

[0009] A positioning boss is arranged on the outer wall of the support tube, and the positioning boss is engaged with the positioning groove.

[0010] Optionally, the positioning boss contacts the inner wall of the filter paper tube.

[0011] Optionally, the cross-sections of the positioning groove and the positioning boss along the axis direction of the central tube are both trapezoidal, and the positioning boss and the positioning groove are interference fit.

[0012] Optionally, there are a plurality of positioning grooves, and the plurality of positioning grooves are circumferentially distributed on the central tube; there are a plurality of positioning bosses, and the plurality of positioning bosses are circumferentially distributed on the support tube.

[0013] Optionally, it also includes:

[0014] There are two sealing rings, one sealing ring is respectively arranged on the filter paper upper cover and the filter paper lower cover.

[0015] The working principle and beneficial effects of the utility model are:

[0016] In the utility model, during installation, the operator first sets the support tube sleeve in the center tube, and then sets the assembled support tube and center tube sleeve in the filter paper cylinder, and then respectively bonds the upper end cover and the lower end cover to the two ends of the filter paper cylinder. The center tube plays the role of supporting the filter paper cylinder, and the support tube plays the role of strengthening the center tube supporting the filter paper cylinder. The setting of the support tube improves the supporting effect of the center tube on the filter paper cylinder, and at the same time reduces the possibility of the center tube shaking in the filter paper cylinder. Since the support tube has a plurality of circumferentially distributed filter holes, each filter hole corresponds to a plurality of axially distributed feed grooves on the center tube, so that the engine oil can pass through the feed groove and the filter hole in sequence after being filtered by the filter paper cylinder, and enter the support tube more smoothly, and then flow into the main oil circuit of the engine from the discharge end of the upper end cover. At the same time, the setting of the filter hole can also perform secondary filtration on the engine oil to improve the purity of the engine oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is another three-dimensional structural schematic diagram of the utility model (the filter paper cylinder is not shown);

[0020] Figure 3 This is a schematic diagram of the internal structure of the central tube and the support tube of the utility model when assembled (the filter paper cylinder is not shown);

[0021] Figure 4 for Figure 2 A local enlarged schematic diagram of point I in the middle;

[0022] Figure 5 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the central tube of the utility model;

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the support tube of the utility model.

[0025] In the figure, 1, central tube; 101, material trough; 102, positioning groove; 2, filter paper cylinder; 3, support tube; 301, filter hole; 4, positioning boss; 401, connecting surface; 5, filter paper upper cover; 501, discharge end; 6, filter paper lower cover; 7, sealing ring. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0027] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0028] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] like Figure 1 to Figure 7 As shown, this embodiment proposes a cured paper environmentally friendly filter core structure, including: a filter paper upper cover 5, a filter paper lower cover 6 symmetrically arranged with the filter paper upper cover 5, a filter paper cylinder 2 with two ends respectively bonded to the filter paper upper cover 5 and the filter paper lower cover 6, and a central tube 1 sleeved in the filter paper cylinder 2, the central tube 1 is used to support the filter paper cylinder 2, the central tube 1 has a plurality of axially distributed material troughs 101; the support tube 3 is sleeved in the central tube 1, the support tube 3 has a plurality of circumferentially distributed filter holes 301, the filter holes 301 are connected with the material trough 101, the filter paper upper cover 5 has a discharge end 501, and the discharge end 501 is connected with the support tube 3.

[0031] In this embodiment, during installation, the operator needs to first sleeve the support tube 3 in the center tube 1, and then sleeve the installed support tube 3 and center tube 1 in the filter paper tube 2, and then weld the two ends of the filter paper tube 2 to the upper end cover and the lower end cover. The function of the support tube 3 is to improve the support of the center tube 1 on the filter paper tube 2, reduce the situation that the filter paper tube 2 is damaged after long-term use, and at the same time, the support tube 3 reduces the possibility of the center tube 1 shaking in the filter paper tube. The plurality of filter holes 301 on the support tube 3 allow the filtered engine oil to flow into the support tube 3 more smoothly. At the same time, the setting of the filter holes 301 can also perform secondary filtration on the engine oil filtered by the filter paper tube 2, so that the engine oil entering the main oil channel of the engine is purer. The working process is as follows: the engine oil flows into the filter from the outside, and then flows to the periphery of the filter paper cylinder 2. The engine oil filtered by the filter paper cylinder 2 passes through the material groove 101 and the filter hole 301 on the central tube 1 in turn, and then enters the support tube 3, and finally flows out from the discharge end 501 of the upper end cover to the main oil channel of the engine for lubrication.

[0032] Optionally, the central tube 1 further has a positioning groove 102 , and the positioning groove 102 is communicated with the central tube 1 ; further comprising: a positioning boss 4 is arranged on the outer wall of the support tube 3 , and the positioning boss 4 is snap-fitted with the positioning groove 102 .

[0033] In this embodiment, the positioning groove 102 and the positioning boss 4 form a precise positioning and fixing mechanism, which is intended to simplify the assembly process and ensure the precise alignment between the various parts of the filter core structure. When the support tube 3 is inserted into the center tube 1, the positioning boss 4 is accurately embedded in the positioning groove 102 to form a stable mechanical lock. The interference fit ensures the radial pressure between the support tube 3 and the center tube 1, reduces the relative sliding between the two due to medium pressure or vibration during the filtration process, maintains structural stability, and reduces the shaking of the center tube 1 in the filter paper cylinder 2.

[0034] Optionally, the positioning boss 4 contacts the inner wall of the filter paper tube 2 .

[0035] In this embodiment, the positioning boss 4 also has a connecting surface 401, and the connecting surface 401 contacts the inner wall of the filter paper tube 2, further strengthening the axial positioning of the filter paper tube 2, preventing the filter paper tube 2 from axially deviating or loosening during use, and ensuring the continuity and reliability of filtration. When installing this inner core structure, the operator first sets the support tube 3 in the center tube 1, and then sets the filter paper tube 2 on the outer wall of the center tube 1. The filter paper tube 2 is not only glued to the outer wall of the center tube 1, but also glued to the positioning boss, so that the filter paper tube 2 is stably fixed on the center tube 1. When in use, the expansion of the filter paper tube 2 away from the axis of the center tube 1 is reduced, and the phenomenon of the filter paper tube 2 being damaged when the amount of oil injected is too much is reduced, and the service life is extended. At the same time, it is easy to disassemble and install, saving manpower.

[0036] Optionally, the cross-sections of the positioning groove 102 and the positioning boss 4 along the axial direction of the central tube 1 are both trapezoidal, and the positioning boss 4 and the positioning groove 102 are interference fit.

[0037] In this embodiment, the cross-sections of the positioning groove 102 and the positioning boss 4 are both trapezoidal, so that the support tube 3 and the center tube 1 are interference-fitted, thereby achieving a firm clamping connection between the center tube 1 and the support tube 3 .

[0038] Optionally, there are a plurality of positioning grooves 102 , which are circumferentially distributed on the central tube 1 , and there are a plurality of positioning bosses 4 , which are circumferentially distributed on the support tube 3 .

[0039] In this embodiment, in order to enhance the overall stability of the filter core structure, the positioning groove 102 and the positioning boss 4 are designed to be multiple, and are respectively distributed circumferentially on the central tube 1 and the support tube 3. This distribution method provides multi-point contact and fixation, so that the filter paper tube 2 can maintain balanced force in all directions, reducing the phenomenon of rotation or twisting of the filter paper tube 2 during use.

[0040] In summary, the filter core structure is cleverly designed to achieve effective distribution of the filter medium, firm support for the filter paper tube 2, and precise assembly and positioning of the various parts, thereby improving the working efficiency, durability, and maintainability of the filter, making it suitable for various application scenarios requiring efficient filtration.

[0041] Optionally, it further includes: there are two sealing rings 7, and one sealing ring 7 is respectively arranged on the filter paper upper cover 5 and the filter paper lower cover 6.

[0042] In this embodiment, two sealing rings 7 are respectively installed on the filter paper upper cover 5 and the filter paper lower cover 6. Specifically, each sealing ring 7 should be located between the contact surface of the filter paper upper cover 5 (or filter paper lower cover 6) and the support tube 3 connection part to form an additional sealing barrier. The setting of the sealing ring 7 enables the filter paper upper cover 5 and the support tube 3, and the filter paper lower cover 6 and the support tube 3 to form a close contact, effectively reducing the leakage of the filter medium from the connection gap, improving the sealing performance of the overall filter core structure, and ensuring the filtering effect. At the same time, the sealing ring 7 will deform to a certain extent when subjected to pressure. This deformation can absorb part of the pressure fluctuations from the filter medium or the vibrations generated during the operation of the equipment, play a role in buffering and shock absorption, and is conducive to improving the operating stability of the filter core structure and extending its service life. The sealing ring 7 can be made of elastic material, has good temperature resistance, pressure resistance, and corrosion resistance, can adapt to the use under various working conditions, and ensure that a good sealing effect is maintained for a long time. The sealing ring 7 is an independent component. When its sealing performance decreases due to wear or aging, it is only necessary to replace the sealing ring 7 at the corresponding position. There is no need to overhaul the inner core structure of the filter, which reduces maintenance costs and improves equipment availability.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A cured paper environmentally friendly filter core structure, comprising a filter paper upper cover (5), a filter paper lower cover (6) symmetrically arranged with the filter paper upper cover (5), a filter paper cylinder (2) with two ends respectively bonded to the filter paper upper cover (5) and the filter paper lower cover (6), and a central tube (1) sleeved in the filter paper cylinder (2), the central tube (1) being used to support the filter paper cylinder (2), the central tube (1) having a plurality of axially distributed material channels (101), characterized in that: Also includes: A support tube (3) is sleeved in the central tube (1); the support tube (3) has a plurality of filter holes (301) distributed circumferentially, the filter holes (301) are connected to the material trough (101); the filter paper upper cover (5) has a discharge end (501), and the discharge end (501) is connected to the support tube (3).

2. The inner core structure of a cured paper environmentally friendly filter according to claim 1, characterized in that: The central tube (1) further comprises a positioning groove (102), wherein the positioning groove (102) is in communication with the central tube (1); and further comprises: A positioning boss (4) is arranged on the outer wall of the support tube (3), and the positioning boss (4) is snap-fitted with the positioning groove (102).

3. The inner core structure of a cured paper environmentally friendly filter according to claim 2, characterized in that: The positioning boss (4) is in contact with the inner wall of the filter paper cylinder (2).

4. The inner core structure of a cured paper environmentally friendly filter according to claim 3, characterized in that: The cross-sections of the positioning groove (102) and the positioning boss (4) along the axial direction of the central tube (1) are both trapezoidal, and the positioning boss (4) and the positioning groove (102) are interference fit.

5. The inner core structure of a cured paper environmentally friendly filter according to claim 4, characterized in that: There are a plurality of positioning grooves (102), which are circumferentially distributed on the central tube (1); there are a plurality of positioning bosses (4), which are circumferentially distributed on the support tube (3).

6. The inner core structure of a cured paper environmentally friendly filter according to claim 5, characterized in that: Also includes: There are two sealing rings (7), one sealing ring (7) is disposed on the filter paper upper cover (5) and one sealing ring (7) is disposed on the filter paper lower cover (6).

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