Hydraulic filter shell

Abstract

The utility model provides a hydraulic filter shell, relates to the technical field of filter equipment, and solves the technical problems that the filter shell is poor in sealing and easy to fall off. The hydraulic filter shell comprises a shell body, a cover plate, rolling wheels, a rotating shaft, a sliding groove, a clamping groove, a sealing ring and a sealing ring, the sliding groove is spirally formed in the outer wall of the shell body, the top end of the sliding groove is connected with an inlet, and the bottom end of the sliding groove is connected with the clamping groove; the roller is arranged on the inner wall of the cover plate through a rotating shaft and is in sliding connection with the chute; the sealing ring is placed on the top of the shell and abuts against the top of the inner cavity of the cover plate. The sealing ring is arranged at the bottom edge of the inner cavity of the cover plate and is positioned below the roller; an anti-falling part is arranged at the end, connected with the sliding groove, of the clamping groove. According to the utility model, a double sealing effect can be formed, the sealing effect of the filter shell is ensured as much as possible, and the possibility that the roller is separated from the clamping groove is reduced by arranging the anti-separation part at the joint of the clamping groove and the sliding groove, so that the connection stability between the cover plate and the shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering equipment, in particular to a hydraulic filter housing. Background Art

[0002] According to production statistics, more than 75% of the faults in the hydraulic system are caused by impurities mixed in the hydraulic oil. Therefore, it is very important to maintain the cleanliness of the oil and prevent oil contamination for the hydraulic system. The existing method of replacing the filter element is to open the outer shell after unscrewing the screws with a wrench and then replace the filter element. However, the friction coefficient between the threads is high, and the opening process is very physically demanding, which makes it difficult to manually replace the filter element.

[0003] In order to solve the problem of difficulty in manually opening the outer shell, a method is designed in the prior art that utilizes a roller to roll at the inner end of a slide groove to reduce the resistance to twisting of the bracket. During use, the filter element is placed inside the outer shell, and the roller is manually aligned with the entrance to clamp the bracket on the upper end of the outer shell and tighten it. During the twisting process, the twisting friction is reduced by the rolling characteristics of the roller. When the filter element needs to be replaced, the reverse operation is sufficient, which reduces the twisting resistance, facilitates disassembly and assembly, reduces the burden of manual replacement of the filter element, and solves the problem of difficulty in manual replacement of the filter element.

[0004] The applicant has found that the prior art has at least the following technical problems:

[0005] The existing filter housing uses a roller and a slide groove structure to achieve a screw connection, and a sealing ring is used to achieve a seal between the cover and the housing. Although this roller and slide groove structure can reduce the screw resistance during installation and removal, it has problems such as poor sealing and easy detachment from the slot. It is also impossible to intuitively know when the roller is screwed into place during installation, that is, when the roller rolls to the slot position without having to screw it hard again, which causes the roller to be pushed out and there is a risk of damage. Utility Model Content

[0006] The utility model aims to provide a hydraulic filter housing to solve the technical problems of poor sealing and easy falling out of the filter housing in the prior art.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides a hydraulic filter housing, comprising a housing, a cover plate, a roller, a rotating shaft, a slide groove, a clamping groove, a sealing ring, and a sealing ring, wherein:

[0009] The slide groove is spirally opened on the outer wall of the shell, and the top end is connected to the inlet, and the bottom end is connected to the slot;

[0010] The roller is arranged on the inner wall of the cover plate through the rotating shaft and is slidably connected with the sliding groove;

[0011] The sealing ring is placed on the top of the shell and abuts against the top of the inner cavity of the cover plate;

[0012] The sealing ring is arranged at the bottom edge of the inner cavity of the cover plate and is located below the roller;

[0013] An anti-dropping portion is provided at one end of the clamping slot connected to the sliding slot.

[0014] As an optional implementation manner of the present utility model, the sealing ring is an annular structure, and the inner cavity diameter is equal to or smaller than the outer diameter of the shell.

[0015] As an optional implementation manner of the present utility model, the sealing ring is made of rubber material.

[0016] As an optional implementation of the present utility model, an inwardly recessed deformation groove is provided in the middle of the end surface of the sealing ring.

[0017] As an optional implementation manner of the present utility model, the cross-sectional shape of the deformation groove is a triangle or a trapezoid.

[0018] As an optional implementation manner of the present utility model, the height of the slot is equal to the diameter of the roller, the anti-slip portion is a necking structure, and the width of the necking structure is smaller than the diameter of the slot.

[0019] As an optional implementation manner of the present utility model, the connection between the anti-slip portion and the clamping slot, and the connection between the anti-slip portion and the sliding slot are both arc transition structures.

[0020] As an optional implementation manner of the present utility model, a marking line is provided on the shell corresponding to the position of the card slot; and a marking line is provided on the outer wall of the cover plate corresponding to the position of the roller.

[0021] As an optional implementation manner of the present utility model, both ends of the roller are arc transition structures, and the side edges of the slide groove are arc transition structures.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The hydraulic filter housing provided by the utility model forms a double sealing effect by respectively arranging a sealing ring and a sealing ring which play a sealing role at the top and the bottom of the inner cavity of the cover plate, thereby ensuring the sealing effect of the filter housing as much as possible, and arranging an anti-slip portion at the connection between the card slot and the slide slot to reduce the possibility of the roller slipping out of the card slot, thereby improving the connection stability between the cover plate and the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the hydraulic filter housing of the utility model;

[0026] Figure 2 It is a structural schematic diagram of a cover plate in a hydraulic filter housing of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the housing in the hydraulic filter housing of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the sealing ring in the hydraulic filter housing of the utility model;

[0029] Figure 5 It is a cross-sectional view of a sealing ring in a hydraulic filter housing of the utility model.

[0030] In the figure, 1 is the shell; 2 is the cover plate; 3 is the roller; 4 is the slide groove; 5 is the card slot; 6 is the sealing ring; 7 is the sealing ring; 8 is the deformation groove; 9 is the anti-slip part; 10 is the marking line. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0032] like Figure 1 As shown, the utility model provides a hydraulic filter housing, in which a filter element is placed for realizing the hydraulic oil filtering function; specifically, in this embodiment, the filter housing includes a housing 1 for accommodating the filter element, a detachable cover plate 2 provided on the top of the housing 1, a roller 3, a rotating shaft, a slide groove 4, a card slot 5, a sealing ring 6, and a sealing ring 7, wherein:

[0033] The slide groove 4 is spirally opened on the outer wall of the housing 1, and the top end is connected to the entrance, and the bottom end is connected to the card slot 5; it should be noted here that the entrance is used for putting in and taking out the roller 3;

[0034] The roller 3 is arranged on the inner wall of the cover plate 2 via a rotating shaft and is slidably connected with the slide groove 4;

[0035] like Figure 2 As shown, the sealing ring 6 is placed on the top of the housing 1 and abuts against the top of the inner cavity of the cover plate 2; the primary seal between the cover plate 2 and the housing 1 is achieved by the sealing ring 6;

[0036] The sealing ring 7 is arranged at the bottom edge of the inner cavity of the cover plate 2 and is located below the roller 3; the sealing ring 7 realizes the secondary sealing between the cover plate 2 and the housing 1;

[0037] It should be noted that the sealing ring 7 and the cover plate 2 can be connected by bonding or clamping. For example, when the clamping method is adopted, a small groove can be provided on the inner wall of the cover plate 2, and then the sealing ring 7 is clamped into the small groove to fix the sealing ring 7. Of course, in order to ensure a firm connection, other existing connection methods can also be used for connection, which are not specifically limited here.

[0038] like Figure 3 As shown, an anti-slip portion 9 is provided at one end of the slot 5 connected to the slide slot 4. The anti-slip portion 9 is provided to prevent the roller 3 from slipping out when it is inserted into the slot 5.

[0039] like Figure 3 As shown, further, in this embodiment, there are three rollers 3, which are evenly spaced apart; there are also three slide grooves 4, which are evenly spaced apart, and each slide groove 4 is connected to a card slot 5 at its end and to an entrance at its beginning.

[0040] The hydraulic filter housing provided by the utility model forms a double sealing effect by respectively arranging a sealing ring 6 and a sealing ring 7 for sealing at the top and bottom of the inner cavity of the cover plate 2, thereby ensuring the sealing effect of the filter housing as much as possible, and arranging an anti-slip portion 9 at the connection between the card slot 5 and the slide slot 4 to reduce the possibility of the roller 3 slipping out of the card slot 5, thereby improving the connection stability between the cover plate 2 and the housing 1.

[0041] In order to achieve a sealing effect, in this embodiment, as Figure 3 As shown, the sealing ring 7 is an annular structure, with its outer edge connected to the inner wall of the cover plate 2 and its inner edge abutting against the outer wall of the shell 1. Furthermore, in this embodiment, in order to improve the sealing effect, the inner cavity diameter of the sealing ring 7 is equal to or smaller than the outer diameter of the shell 1.

[0042] When the inner diameter of the sealing ring 7 is smaller than the outer diameter of the shell 1, the difference between the inner diameter of the sealing ring 7 and the outer diameter of the shell 1 is not large, so as to avoid excessive resistance when the cover plate 2 is screwed due to excessive abutment pressure. For example, an inner diameter difference of about 1-2 mm can be used.

[0043] In order to extend the service life of the sealing ring 7, the sealing ring 7 is made of oil-resistant rubber material.

[0044] In order to improve the sealing effect, when the sealing ring 7 is made of rubber material, when its thickness is not large, it is easy to deform when resisting the force. In order to improve the sealing effect when deforming, Figure 5 As shown, an inwardly recessed deformation groove 8 is provided in the middle of the end face of the sealing ring 7. When the end of the sealing ring 7 abuts against the outer wall of the shell 1, the deformation groove 8 is provided so that two deformation lips are formed on the end face of the sealing ring 7. The deformation lips will deform outward when under pressure to form triangular ends, thereby forming two seals at the end face of the sealing ring 7.

[0045] In order to facilitate the deformation of the end of the sealing ring 7, the cross-sectional shape of the deformation groove 8 is triangular or trapezoidal.

[0046] In this embodiment, the height of the slot 5 is equal to the diameter of the roller 3, and the anti-slip portion 9 is a necked structure, and the width of the necked structure is smaller than the diameter of the slot 5. When installing, when the cover plate 2 is screwed, when the roller 3 contacts the anti-slip portion 9, since the anti-slip portion 9 is slightly smaller than the diameter of the roller 3, the roller 3 can enter the anti-slip portion 9 with a little force, and then snap into the slot 5 to achieve position locking. When in use, the anti-slip portion 9 can be used to prevent the roller 3 from slipping off, so as to avoid looseness between the cover plate 2 and the housing 1, which may cause poor sealing and leakage.

[0047] In order to reduce the force during installation and removal, the connection between the anti-slip part 9 and the clamping groove 5 and the connection between the anti-slip part 9 and the sliding groove 4 are both arc transition structures.

[0048] In order to further facilitate knowing whether it is installed in place and to avoid the problem of damage caused by applying force again after the cover 2 and the shell 1 are installed in place, a marking line 10 is set on the shell 1 corresponding to the position of the card slot 5; a marking line 10 is set on the outer wall of the cover 2 corresponding to the position of the roller 3.

[0049] In order to further reduce the resistance between the roller 3 and the slide groove 4, both ends of the roller 3 are arc transition structures, and the side of the slide groove 4 is an arc transition structure.

[0050] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A hydraulic filter housing, characterized in that: It includes a housing, a cover plate, a roller, a rotating shaft, a slide groove, a clamping groove, a sealing ring, and a sealing ring, wherein: The slide groove is spirally opened on the outer wall of the shell, and the top end is connected to the inlet, and the bottom end is connected to the slot; The roller is arranged on the inner wall of the cover plate through the rotating shaft and is slidably connected with the sliding groove; The sealing ring is placed on the top of the shell and abuts against the top of the inner cavity of the cover plate; The sealing ring is arranged at the bottom edge of the inner cavity of the cover plate and is located below the roller; An anti-dropping portion is provided at one end of the clamping slot connected to the sliding slot.

2. The hydraulic filter housing according to claim 1, characterized in that: The sealing ring is an annular structure, and the inner cavity diameter is equal to or smaller than the outer diameter of the shell.

3. The hydraulic filter housing according to claim 1, characterized in that: The sealing ring is made of rubber material.

4. The hydraulic filter housing according to claim 2, characterized in that: The middle part of the end surface of the sealing ring is provided with an inwardly recessed deformation groove.

5. The hydraulic filter housing according to claim 4, characterized in that: The cross-sectional shape of the deformation groove is a triangle or a trapezoid.

6. The hydraulic filter housing according to claim 1, characterized in that: The height of the slot is equal to the diameter of the roller, the anti-slip portion is a necking structure, and the width of the necking structure is smaller than the diameter of the slot.

7. The hydraulic filter housing according to claim 6, characterized in that: The connection between the anti-slip portion and the clamping slot, and the connection between the anti-slip portion and the sliding slot are both arc transition structures.

8. The hydraulic filter housing according to claim 1, characterized in that: A marking line is arranged on the shell body corresponding to the position of the card slot; and a marking line is arranged on the outer wall of the cover plate corresponding to the position of the roller.

9. The hydraulic filter housing according to claim 1, characterized in that: The two ends of the roller are arc transition structures, and the side edges of the slide groove are arc transition structures.

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