Cover opening tool for filter

Abstract

The utility model discloses a filter cover opening tool which is used for opening an upper cover of a filter, the upper cover is fixed on the filter through a fastening piece, and the fastening piece comprises a protruding head. The filter uncovering tool is characterized in that the filter uncovering tool comprises a locking mechanism, the locking mechanism comprises a locking part, a connecting part and a sleeve, the locking part is fixedly arranged at one end of the connecting part, and the locking part is provided with a first cavity matched with the head in size; the sleeve is fixed at the other end of the connecting part and is provided with a second cavity; the movable handle comprises a rod part and a limiting part, the rod part penetrates through the second cavity of the sleeve, and the rod part can slide in the sleeve in the radial direction; the limiting part is fixed to one end of the rod part, and the size of the limiting part in the radial direction is larger than that of the second cavity, so that when the rod part slides to one end of the limiting part, the limiting part limits disengagement of the rod part. By means of the structure, obstacles can be effectively avoided through the movable rod portion, and the force arm is long and easy to apply force.

Description

Technical Field

[0001] The utility model relates to a cover opening tool, in particular to a filter cover opening tool. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] The filter is a common component in industrial production that filters fluids. The filter is equipped with a filter element, which is the main consumable to block non-fluid residues. When the residue in the filter element accumulates to a certain level, the filter needs to be opened and the filter element replaced.

[0004] Typically, the filter has a top cover that is locked to the filter by fasteners. To replace the filter element, the fasteners must be opened and the cover removed. Existing fasteners are typically opened manually or with a standard wrench, which has a small lever arm and is difficult to apply force. This often results in operators struggling to exert force, ultimately leading to a loose filter seal and leakage. Some fasteners are opened with a T-shaped wrench, which has a relatively long lever arm but poorly adapts to the fastener. The stem is also long, making it prone to collisions with obstacles and making movement difficult.

[0005] There is currently no filter cover opening tool that can solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a filter cover opening tool which can effectively avoid obstacles through a movable rod and has a long lever arm for easy exertion of force.

[0007] To achieve the above-mentioned object, the utility model discloses the following filter cover opening tool, which is used to open the upper cover of the filter, wherein the upper cover is fixed to the filter by a fastener, and the fastener includes a protruding head, and the head can be rotated to disengage the fastener from the upper cover; wherein the filter cover opening tool comprises:

[0008] A locking mechanism comprising a locking portion, a connecting portion, and a sleeve, wherein the locking portion is fixedly disposed at one end of the connecting portion and has a first cavity matching the size of the head; the sleeve is fixedly disposed at the other end of the connecting portion and has a second cavity;

[0009] A movable handle, the movable handle includes a rod and a limiting portion, the rod is passed through the second cavity of the sleeve, and the rod can slide radially in the sleeve; the limiting portion is fixed to one end of the rod, and the radial size of the limiting portion is larger than the second cavity, so that when the rod slides to one end of the limiting portion, the limiting portion limits the detachment of the rod.

[0010] Furthermore, the first cavity axially penetrates the locking portion.

[0011] Furthermore, the connecting portion is fixedly arranged at a middle position where the first cavity passes through the top opening of the locking portion, so that two openings are formed at the top of the locking portion.

[0012] Furthermore, one end of the rod portion includes an inwardly concave threaded hole, the limiting portion includes a screw and a nut, the screw matches the threaded hole, and the nut has a dimension along the radial direction larger than the second cavity.

[0013] Furthermore, a radial dimension of an end of the rod away from the limiting portion is smaller than that of the second cavity, so that the rod can slide out of the sleeve from the end away from the limiting portion.

[0014] Furthermore, the cross section of the rod portion perpendicular to the radial direction is a first circle, and the cross section of the second cavity perpendicular to the radial direction is a second circle.

[0015] Furthermore, the size of the second circle is larger than that of the first circle.

[0016] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0017] 1. The filter cover opening tool of this utility model can effectively avoid obstacles in the operating space through the rod portion that can move relative to the sleeve, and has strong flexibility. The extension and retraction of the rod portion makes the tool arm flexible and adjustable, making it suitable for opening fasteners with various torques.

[0018] 2. The locking portion of the filter cover opening tool of the present invention has a first cavity, which can be adapted to fastener heads of various heights and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a three-dimensional diagram of a filter cover opening tool provided in an embodiment of this specification;

[0021] Figure 2 1 is a cross-sectional schematic diagram of a filter cover opening tool provided in an embodiment of this specification;

[0022] In the figure: 1. locking mechanism; 11. locking part; 111. first cavity; 112. opening; 12. connecting part; 13. sleeve; 131. second cavity; 2. movable handle; 21. rod; 211. threaded hole; 22. limiting part; 221. nut. DETAILED DESCRIPTION

[0023] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments derived by those skilled in the art based on the embodiments in this specification without creative effort shall fall within the scope of protection of this specification.

[0024] In the description of the present invention, it should be noted that the terms "upper", "middle", "lower", "inside", "outside", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes the implementation of the present invention based on its overall structure.

[0025] See Figure 1-2 , is a filter cover opening tool of this embodiment, used for opening the upper cover of the filter, wherein the upper cover is fixed to the filter by a fastener, and the fastener includes a protruding head, which can be rotated to release the fastener from the upper cover; wherein the filter cover opening tool includes:

[0026] The locking mechanism 1 includes a locking portion 11, a connecting portion 12, and a sleeve 13. The locking portion 11 is fixedly disposed at one end of the connecting portion 12 and has a first cavity 111 that matches the size of the head. The sleeve 13 is fixed at the other end of the connecting portion 12 and has a second cavity 131.

[0027] The movable handle 2 includes a rod 21 and a limiting portion 22. The rod 21 passes through the second cavity 131 of the sleeve 13, and the rod 21 can slide radially in the sleeve 13; the limiting portion 22 is fixed to one end of the rod 21, and the radial size of the limiting portion 22 is larger than the second cavity 131, so that when the rod 21 slides to one end of the limiting portion 22, the limiting portion 22 limits the detachment of the rod 21.

[0028] Through the above structure, when in use, the operator only needs to select the locking mechanism 1 that matches the fastener to be opened, and put the sleeve 13 of the locking mechanism 1 on the rod 21 of the movable handle 2, thereby realizing the movable connection between the locking mechanism 1 and the movable handle 2. Next, the operator puts the first cavity 111 of the locking portion 11 in the connected locking mechanism 1 on the protruding head of the fastener to be opened, so that the head is wrapped by the locking portion 11, and the head can partially abut against the inner wall of the sleeve 13. Next, the operator pulls the rod 21 to move the rod 21 relative to the locking mechanism 1 until the rod 21 moves to a preset position, and then applies a torsional force to the rod 21, so that the rod 21 drives the locking mechanism 1 to rotate axially in a specified direction, thereby opening the fastener.

[0029] During the above process, since the rod 21 can move relative to the locking mechanism 1, obstacles in the operating space can be effectively avoided, and the device has strong flexibility. Moreover, through the extension and retraction of the rod 21, the lever arm of this embodiment is flexible and adjustable, and is suitable for opening fasteners with various torques. At the same time, when the locking portion 11 has redundant space for the fastener sleeve, it can also complete the application of torque to the fastener head, as long as the inner wall of the locking portion 11 can abut against the fastener head and be relatively fixed. Therefore, a locking portion 11 of a single size can be used to open fasteners with various head heights. In some cases, even if the fastener head is smaller, the fastener can be opened, because as long as the inner wall of the locking portion 11 can abut against the fastener head and be relatively fixed, the rotation of the locking mechanism 1 can be driven by the movement of the movable handle 2.

[0030] At the same time, in this embodiment, the locking part 11, the connecting part 12 and the sleeve 13 in the locking mechanism 1 may be fixed to each other by welding. Through the welding connection, the stability between the locking part 11, the connecting part 12 and the sleeve 13 is relatively high; in another embodiment, the connecting part 12 has threaded holes at both ends, and the corresponding positions of the locking part 11 and the sleeve 13 have screws matching the threaded holes, so that a threaded connection can be achieved between the locking part 11, the connecting part 12 and the sleeve 13. Through the threaded connection, the locking part 11, the connecting part 12 and the sleeve 13 have both stability and detachable maintainability. In the third embodiment, both ends of the connecting portion 12 have concave card grooves, and the corresponding positions of the locking portion 11 and the sleeve 13 have card blocks matching the card grooves. The card blocks of the locking portion 11 and the sleeve 13 are clamped in the card grooves of the connecting portion 12, so that the locking portion 11, the connecting portion 12 and the sleeve 13 are mechanically connected. No axial displacement will occur between the locking portion 11, the connecting portion 12 and the sleeve 13. The mechanical connection makes disassembly and maintenance easier.

[0031] Furthermore, the first cavity 111 axially penetrates the locking portion 11, and the connecting portion 12 is fixedly arranged in the middle position of the first cavity 111 penetrating the top opening of the locking portion 11, so that two openings 112 are formed on the top of the locking portion 11. By setting the first cavity 111 penetrating the locking portion 11, during use, when the protruding head of the fastener is inserted into the locking portion 11, since the other end of the penetrating first cavity 111 along the axial direction does not hinder the head, when the two sides of the head partially protrude axially, the protruding parts of the head can be extended from the opening 112 to the outside of the locking portion 11. Therefore, even in the case of a locking portion 11 with a limited axial volume size, the locking portion 11 of this embodiment can still be applied to fasteners of larger sizes, as long as the inner wall of the locking portion 11 can contact and be relatively fixed with the head of the fastener. Based on the above structure, the production cost of the locking mechanism 1 can be further saved.

[0032] Furthermore, one end of the rod portion 21 includes a concave threaded hole 211, and the limiting portion 22 includes a screw (not shown) and a nut 221. The screw 221 matches the threaded hole 211, and the nut 221 has a radial dimension larger than the second cavity 131. Specifically, based on the above structure, the limiting portion 22 can be a common hexagonal bolt, as long as the limiting portion 22 can be positioned so that the bolt 221 cannot pass through the sleeve 13, which can further reduce the production cost of the tool of this embodiment.

[0033] Furthermore, the radial dimension of the end of the rod 21 away from the stop portion 22 is smaller than that of the second cavity 131, so that the rod 21 can slide out of the sleeve 13 from the end away from the stop portion 22. Specifically, because the end of the rod 21 away from the stop portion 22 can be withdrawn from the middle sleeve 13 without hindrance, the locking mechanism 1 and the movable handle 2 can be stored separately when in use. Before use, the rod 21 can be passed through the sleeve 13 for installation, which facilitates the storage, installation, and subsequent maintenance of the filter cover opening tool of this embodiment.

[0034] Furthermore, the cross-section of the rod 21 perpendicular to the radial direction is a first circular shape, while the cross-section of the second cavity 131 perpendicular to the radial direction is a second circular shape. Furthermore, the second circular shape is larger than the first circular shape. Specifically, the circular cross-section further reduces friction between the rod 21 and the sleeve 13, facilitating flexible adjustment of the rod 21 by the operator. Furthermore, the friction between the structures in this embodiment is reduced, thereby extending the tool's service life.

[0035] Although different specific embodiments are mentioned in this application, this application is not limited to the situations described in industry standards or embodiments. Some industry standards or slightly modified implementations based on customized methods or implementations described in the embodiments can also achieve the same, equivalent, or similar implementation effects as the above embodiments, or predictable implementation effects after modification. Examples that apply these modified or modified data acquisition, processing, output, judgment methods, etc. can still fall within the scope of optional implementation schemes of this application.

[0036] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present application without departing from the spirit of the present application. It is intended that the appended embodiments include these modifications and variations without departing from the present application.

Claims

1. A filter cover opening tool for opening the upper cover of a filter, wherein: The upper cover is fixed to the filter by a fastener, and the fastener includes a protruding head, and the head can be rotated to make the fastener detach from the upper cover; it is characterized in that the filter cover opening tool includes: A locking mechanism comprising a locking portion, a connecting portion, and a sleeve, wherein the locking portion is fixedly disposed at one end of the connecting portion and has a first cavity matching the size of the head; the sleeve is fixedly disposed at the other end of the connecting portion and has a second cavity; A movable handle, the movable handle includes a rod and a limiting portion, the rod is passed through the second cavity of the sleeve, and the rod can slide radially in the sleeve; the limiting portion is fixed to one end of the rod, and the radial size of the limiting portion is larger than the second cavity, so that when the rod slides to one end of the limiting portion, the limiting portion limits the detachment of the rod.

2. The filter cover opening tool according to claim 1, characterized in that: The first cavity axially penetrates the locking portion.

3. The filter cover opening tool according to claim 2, characterized in that: The connecting portion is fixedly arranged at a middle position where the first cavity passes through the top opening of the locking portion, so that two openings are formed on the top of the locking portion.

4. The filter cover opening tool according to claim 1, characterized in that: One end of the rod portion includes an inwardly concave threaded hole, and the limiting portion includes a screw rod and a nut. The screw rod matches the threaded hole, and the nut has a larger radial dimension than the second cavity.

5. The filter cover opening tool according to claim 1, characterized in that: The radial dimension of one end of the rod away from the limiting portion is smaller than that of the second cavity, so that the rod can slide out of the sleeve from the end away from the limiting portion.

6. The filter cover opening tool according to claim 1, characterized in that: The cross section of the rod portion perpendicular to the radial direction is a first circle, and the cross section of the second cavity perpendicular to the radial direction is a second circle.

7. The filter cover opening tool according to claim 6, characterized in that: The second circle is larger than the first circle.

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