Hoop nut for filter shell

Abstract

The invention belongs to the technical field of filters, and particularly relates to a clamp nut for a filter shell. The clamp nut comprises an inner hole cylinder and a rotating handle. One end of the inner hole cylinder is connected with the upper part of the rotating handle, the other end of the inner hole cylinder is provided with an inner hole, and the inner hole is provided with internal threads matched with the screw rod; the diameter of the rotary handle is greater than that of the inner hole cylinder; an operation auxiliary hole used for crowbar operation is formed in the center of the rotating handle, and the inner hole is communicated with the operation auxiliary hole. After the clamp nut is buckled and locked in the circumferential direction of the joint of the filter shell, due to the fact that the internal thread is communicated with the operation auxiliary hole, the clamp nut can be matched with screws of different lengths, and the use requirement of a conventional filter shell is met.

Description

Technical Field

[0001] This application belongs to the technical field of filters, and particularly relates to a clamp nut for a filter housing. Background Art

[0002] A nut is a part that is threadedly connected to a bolt or screw rod to play a fastening role. Generally, tools such as screwdrivers and wrenches are required for operation. Special-shaped nuts have an operating handle added on the basis of nuts, which is more convenient for direct manual operation. At the same time, when the human strength is insufficient, simple tools can also be used to assist in tightening and loosening. Compared with the scenarios where ordinary clamps are used, the use environment where the filter housing is located has relatively higher cleanliness requirements, worse spatial flexibility of the use place, more restrictions on the working conditions of workers, and higher requirements for the simplicity of nut use. Therefore, the structure, size, etc. of the clamp nut need to be specially designed.

[0003] Currently, less attention has been paid to the use performance of the clamp nut for the filter housing. Existing clamp nuts usually do not comprehensively consider factors such as versatility, safety, cleanliness requirements, and simplicity of worker operation. The use scenarios are limited, and it is difficult for the same nut to satisfy the use of multiple lengths of screw rods at the same time, resulting in a relatively messy structure of the nut for the clamp. In addition, for longer screw rods, the clamp nut with the existing structure needs to increase the overall size to be adapted, which is not conducive to the operation in a limited space and the placement at the work site. Summary of the Invention

[0004] The purpose of this application is to provide a clamp nut for a filter housing, which solves the problem that the existing clamp nuts are difficult to satisfy the use of multiple lengths of screw rods at the same time and are not suitable for the filter housing.

[0005] Technical solutions for achieving the purpose of this application:

[0006] An embodiment of this application provides a clamp nut for a filter housing, and the clamp nut includes: an inner hole cylinder and a rotating handle;

[0007] One end of the inner hole cylinder is connected to the upper part of the rotating handle, and the other end is provided with an inner hole, and an internal thread adapted to the screw rod is arranged on the inner hole;

[0008] The diameter of the rotating handle is larger than the diameter of the inner hole cylinder; an operation auxiliary hole for crowbar operation is opened at the center of the rotating handle, and the inner hole is communicated with the operation auxiliary hole.

[0009] Optionally, the operation auxiliary hole is in a "four-leaf clover" shape, and the diameter of each leaf of the "four-leaf clover" is greater than 9 mm.

[0010] Optionally, each leaf of the "four-leaf clover" has a structure with a wide bottom and narrowing towards the center.

[0011] Optionally, the rotary handle is in the shape of a fan blade.

[0012] Optionally, the bottom fan tail of the rotary handle is of a flat structure.

[0013] Optionally, anti-slip patterns can be provided on the bottom fan tail of the rotary handle.

[0014] Optionally, the inner hole cylinder and the rotary handle are integrally cast, and the transition joints and sharp edges are all rounded.

[0015] The beneficial technical effects of the present application are as follows:

[0016] A clamp nut for a filter housing provided by an embodiment of the present application includes: an inner hole cylinder and a rotary handle; one end of the inner hole cylinder is connected to the upper part of the rotary handle, and the other end is provided with an inner hole, and an internal thread adapted to a screw is provided on the inner hole; the diameter of the rotary handle is larger than the diameter of the inner hole cylinder; an operation auxiliary hole for crowbar operation is provided at the center of the rotary handle, and the inner hole is communicated with the operation auxiliary hole. After the clamp nut is circumferentially buckled and locked along the connection of the filter housing, due to the connection between the internal thread and the operation auxiliary hole, screws of different lengths can be adapted to meet the usage requirements of a conventional filter housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a clamp nut for a filter housing provided by an embodiment of the present application;

[0018] Figure 2 is a schematic structural diagram of another clamp nut for a filter housing provided by an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of the operation area division of a clamp nut for a filter housing provided by an embodiment of the present application;

[0020] Figure 4a and 4b is a schematic operation diagram of a clamp nut for a filter housing provided by an embodiment of the present application when adapting screws of different lengths;

[0021] Figure 5a and 5b is a schematic operation diagram of another clamp nut for a filter housing provided by an embodiment of the present application when adapting screws of different lengths;

[0022] Figures 6a - 6c is a schematic operation diagram of another clamp nut for a filter housing provided by an embodiment of the present application when adapting screws of different lengths;

[0023] Figure 7a and 7bAnother operation schematic diagram of the clamp nut for the filter housing provided by the embodiment of the present application when adapting to different lengths of screw rods.

[0024] In the figure:

[0025] 1 - Inner hole cylinder; 2 - Rotating handle; 3 - Operation auxiliary hole; 4 - Screw rod; 5 - Crowbar; 11 - Internal thread;

[0026] Ⅰ - Upper blade operation area; Ⅱ - Left and right blade connection operation area; Ⅲ - Lower blade operation area; Ⅳ - Left blade operation area; Ⅴ - Right blade operation area. Specific implementation manners

[0027] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the following described embodiments are only a part of the embodiments of the present application, rather than all of them. Based on the embodiments described in the present application, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of protection of the present application.

[0028] See Figure 1 , this figure is a structural schematic diagram of a clamp nut for a filter housing provided by an embodiment of the present application.

[0029] A clamp nut for a filter housing provided by an embodiment of the present application includes: an inner hole cylinder 1 and a rotating handle 2;

[0030] One end of the inner hole cylinder 1 is connected to the upper part of the rotating handle 2, and the other end is provided with an inner hole, and an internal thread 11 adapted to the screw rod 4 is provided on the inner hole;

[0031] The diameter of the rotating handle 2 is greater than the diameter of the inner hole cylinder 1; an operation auxiliary hole 3 for the operation of the crowbar 5 is provided at the center of the rotating handle 2, and the inner hole is communicated with the operation auxiliary hole 3.

[0032] In the embodiment of the present application, the rotating handle 3 facilitates the rotation operation by hand, and a wrench can be used for auxiliary operation. The inner hole cylinder 1 is adapted to the screw rod 4 of the clamp for thread locking. After the clamp is circumferentially buckled and locked along the connection of the filter housing, since the internal thread 11 is communicated with the operation auxiliary hole 3, the clamp with a screw rod 4 with a maximum length of up to 55 mm can be adapted, meeting the use requirements of a conventional filter housing.

[0033] In some possible implementation manners of the embodiment of the present application, as Figure 1 shown, the operation auxiliary hole 3 can be in the shape of a "four-leaf clover", and the diameter of each leaf of the "four-leaf clover" is greater than 9 mm.

[0034] It is understandable that for the "four-leaf clover" shape, a crowbar 5 can be used to assist in the operation of the screw 4 of different lengths. Each leaf can accommodate a crowbar 5 with a maximum diameter of up to 9 mm to assist in tightening or loosening the nut. Under normal conditions, a crowbar with a diameter of 6 mm basically meets the usage requirements.

[0035] During specific implementation, after the filter clamp clamps the connection part, the special-shaped nut and the screw 4 on the clamp are tightened by hand. At this time, if it is necessary to strengthen the tightening effect, the crowbar 5 can be inserted into the auxiliary operation hole 3 of the "four-leaf clover" shape at the selection handle 2, or a wrench can be used to clamp the fan-shaped tail part of the rotating handle 2 to further tighten the nut. Similarly, when it is necessary to disassemble the filter clamp, if the hand strength is insufficient, the crowbar 5 can be inserted into the auxiliary operation hole 3 or a wrench can be used to assist in loosening the special-shaped nut of the clamp. In addition, in the case where the hand operation strength is insufficient and in a limited narrow space, the "four-leaf clover" structure can provide multiple solutions for the crowbar-assisted operation, making the operation more flexible and convenient.

[0036] In one example, each leaf of the "four-leaf clover" can have a structure that is wide at the bottom and narrows towards the center.

[0037] In another example, the rotating handle 2 can be in the shape of a fan blade and fan-shapedly expand from the connection with the outer surface of the inner hole cylinder 1.

[0038] As an example, the bottom fan-shaped tail of the rotating handle 2 can be a flat structure, which can also facilitate the use of a wrench to borrow force in special cases.

[0039] During specific implementation, the bottom fan-shaped tail of the rotating handle 2 can be provided with anti-slip lines, which can increase the friction during manual rotation and play an anti-slip role.

[0040] In one example, the inner hole cylinder 1 and the rotating handle 2 can be integrally cast, and the transition connection part and sharp edges are all made smooth, which improves the holding comfort and is not easy to hide dirt, ensuring the safety of the operator and the use environment.

[0041] A clamp nut for a filter housing provided by an embodiment of the present application has a relatively small overall size, which improves the space utilization rate in a limited space and reduces the placement difficulty and operation difficulty of the filter in a narrow space. The "four-leaf clover" hollow design at the rotating handle can adapt to the clamp screws of different lengths, with a simple structure and universality; in addition, in the case where the hand operation strength is insufficient and in a limited narrow space, the "four-leaf clover" structure can provide multiple solutions for the crowbar-assisted operation, making the operation more flexible and convenient. The whole is fan-shaped, the transition connection part and all sharp edges are smooth, integrally cast, with better holding comfort, not easy to get injured during operation, and not easy to hide dirt, ensuring the cleanliness of the operation environment.

[0042] The following will describe in detail a clamp nut for a filter housing provided by an embodiment of the present application with a specific example.

[0043] Specific operation scenario implementation cases of a clamp nut for a filter housing provided by an embodiment of the present application may include the following situations:

[0044] As Figure 3 shown, the operation areas in the "four-leaf clover" area of the auxiliary operation hole 3 can be divided into: upper leaf operation area I, left and right leaf connection operation area II, lower leaf operation area III, left leaf operation area IV, and right leaf operation area V.

[0045] For the first situation, as Figure 2 and 3 shown, when the clamp is buckled and the screw rod 4 does not exceed the upper surface of the upper leaf operation area I, that is, when the actual length of the clamp screw rod ≤ 30 mm, the positions where the crowbar 5 can be placed are the upper leaf operation area I, the left and right leaf connection operation area II, and the lower leaf operation area III. The placement angles are as Figure 2 and 4a and 4b shown. The crowbar 5 is tilted against the leaf, and the nut can be tightened or loosened by rotating it clockwise or counterclockwise.

[0046] For the second situation, as Figure 5a , 5b shown, when the clamp is buckled and the screw rod 4 exceeds the upper surface of the upper leaf operation area I but does not exceed the area of the upper leaf operation area I, and the length of the screw rod 4 is 30 - 37 mm, the positions where the crowbar 5 can be placed are the left and right leaf connection operation area II and the lower leaf operation area III. The placement angles are as Figure 5a , 5b shown. The crowbar 5 is tilted against the leaf, and the nut can be tightened or loosened by rotating it clockwise or counterclockwise.

[0047] For the third situation, as Figures 6a - 6c shown, when the clamp is buckled and the screw rod 4 exceeds the area of the upper leaf operation area I but does not exceed the area of the left and right leaf connection operation area II, and the length of the screw rod 4 is 37 - 48 mm, the positions where the crowbar 5 can be placed are the left leaf operation area IV, the right leaf operation area V, and the lower leaf operation area III. The placement angle is as Figures 6a - 6c shown. The crowbar 5 is tilted against the leaf, and the nut can be tightened or loosened by rotating it clockwise or counterclockwise.

[0048] For the fourth situation, as Figure 7a and 7b shown, when the clamp is buckled and the screw rod 4 exceeds the area of the left and right leaf connection operation area II and reaches the area of the lower leaf operation area III, and the length of the screw rod 4 is 48 - 55 mm, the positions where the crowbar 5 can be placed are the left leaf operation area IV and the right leaf operation area V. The placement angles are as Figure 7a and 7bAs shown, the crowbar 5 is tilted against the blade, and the nut can be tightened or loosened by rotating it clockwise or counterclockwise.

[0049] A clamp nut for a filter housing provided by an embodiment of the present application includes: an inner hole cylinder and a rotating handle; one end of the inner hole cylinder is connected to the upper part of the rotating handle, and the other end is provided with an inner hole, and an internal thread adapted to the screw is provided on the inner hole; the diameter of the rotating handle is larger than the diameter of the inner hole cylinder; an operation auxiliary hole for crowbar operation is provided at the center of the rotating handle, and the inner hole communicates with the operation auxiliary hole. After the clamp nut is circumferentially buckled and locked at the connection of the filter housing, since the internal thread is connected to the operation auxiliary hole, screws of different lengths can be adapted to meet the use requirements of a conventional filter housing.

[0050] The present application has been described in detail above in conjunction with the accompanying drawings and embodiments. However, the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the scope of knowledge possessed by those of ordinary skill in the art. The content not described in detail in the present application can all adopt the prior art.

Claims

1. A clamp nut for a filter housing, characterized in that: The clamp nut comprises: an inner hole cylinder (1) and a rotating handle (2); One end of the inner hole cylinder (1) is connected to the upper part of the rotating handle (2), and the other end is provided with an inner hole, and the inner hole is provided with an internal thread (11) adapted to the screw rod (4); The diameter of the rotating handle (2) is larger than the diameter of the inner hole cylinder (1); an operation auxiliary hole (3) for operating a crowbar (5) is provided at the center of the rotating handle (2), and the inner hole is connected to the operation auxiliary hole (3).

2. The clamp nut for a filter housing according to claim 1, characterized in that: The operation auxiliary hole (3) is in the shape of a "four-leaf clover", and the diameter of each leaf of the "four-leaf clover" is greater than 9 mm.

3. The clamp nut for the filter housing according to claim 2, characterized in that: Each leaf of the "four-leaf clover" is wide at the bottom and narrows toward the center.

4. The clamp nut for a filter housing according to any one of claims 1 to 3, characterized in that: The rotating handle (2) is fan-shaped.

5. The clamp nut for the filter housing according to claim 4, characterized in that: The fan tail at the bottom of the rotating handle (2) is a flat structure.

6. The clamp nut for the filter housing according to claim 5, characterized in that: The fan tail at the bottom of the rotating handle (2) is provided with anti-slip grooves.

7. The clamp nut for a filter housing according to any one of claims 1 to 3, characterized in that: The inner hole cylinder (1) and the rotating handle (2) are integrally cast, and the transition joints and sharp edges are rounded.

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