Fixing structure for liquid collecting tube and filter element of large candle filter

Abstract

The utility model discloses a large candle filter collector tube filter element fixing structure and relates to the technical field of filtering equipment. The filter element fixing structure of the large candle filter comprises a liquid collecting pipe connector and a filter element connector, elastic sealing rings are arranged at the liquid collecting pipe connector and the filter element connector, and a hole pulling structure is formed at the connecting position of the liquid collecting pipe connector and a liquid collecting pipe. Through the arrangement of the elastic sealing ring, when the filter element is impacted, a shaking range with a certain angle can be formed between the filter element connector and the liquid collecting pipe connector, meanwhile, no liquid leakage is ensured, the impact on the filter element is buffered, the breakage between the filter element and the liquid collecting pipe or the falling of the filter element is avoided, and the stability of the filter is greatly improved. By means of the tube drawing structure, connection from the liquid collecting tube to the liquid collecting tube connector is not a saddle opening connection mode any more, the welding process is abandoned, the connecting tube is integrally formed, weld joint breakage at the liquid collecting tube is avoided, and meanwhile the breakage risk caused by incomplete welding or insufficient welding and welding skipping is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering equipment, in particular to a large candle type filter liquid collecting pipe filter element fixing structure. Background Art

[0002] The candle filters currently on the market have threads respectively provided on the filter element and the collecting pipe between the collecting pipe and the filter element, and the external threads of the filter element are connected to the internal threads of the collecting pipe, thereby connecting the filter element and the collecting pipe.

[0003] However, after a period of use, the medium inside the filter will continue to impact the filter element, and the stress of the medium impact is all concentrated on the connecting threads. On the one hand, this impact will cause the threads to loosen, which may lead to leakage or even filter element falling off. On the other hand, the impact will cause the thread teeth to collapse, resulting in loosening, leakage and even filter element falling off.

[0004] Even if the connection is intact, Figure 1 As shown in the figure, the connection between the collecting pipe and the filter element has always been two round pipes welded together. Long-term impact can easily cause the saddle mouth of the collecting pipe to break, which can cause the filter element to fall off. Utility Model Content

[0005] The utility model aims to solve the problem that the connection position between the filter element and the liquid collecting pipe of the existing large candle filter is easily impacted and broken during use.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A large candle filter collecting pipe filter element fixing structure comprises a collecting pipe interface and a filter element interface. An elastic sealing ring is arranged at the collecting pipe interface and the filter element interface. A pulling hole structure is formed at the connecting position of the collecting pipe interface and the collecting pipe.

[0008] Through the setting of the elastic sealing ring, when the filter element is impacted, a certain angle of shaking range can be formed between the filter element interface and the liquid collecting pipe interface, while ensuring that there is no leakage. This setting is more reasonable than a purely rigid connection setting, which cushions the impact on the filter element, avoids breakage between the filter element and the liquid collecting pipe or the filter element falling off, and greatly improves the stability of the filter.

[0009] Specifically, a mounting groove is provided at the position of the liquid collecting pipe interface corresponding to the elastic sealing ring, and the filter element interface is a plane.

[0010] Specifically, it also includes a connecting nut. Both the liquid collecting pipe interface and the filter element interface are provided with stepped openings. The diameter of the small end of the connecting nut is smaller than the diameter of the stepped opening of the filter element interface. The large end of the connecting nut is provided with an internal thread. The stepped opening of the liquid collecting pipe interface is provided with an external thread. The large end of the connecting nut is connected to the liquid collecting pipe interface through a thread.

[0011] Preferably, the elastic sealing ring is a rubber O-ring.

[0012] In summary, through the setting of the elastic sealing ring, when the filter element is impacted, a certain angle of shaking range can be formed between the filter element interface and the liquid collecting pipe interface, while ensuring that there is no leakage. This setting is more reasonable than a purely rigid connection setting, which cushions the impact on the filter element, avoids breakage between the filter element and the liquid collecting pipe or the filter element falling off, and greatly improves the stability of the filter.

[0013] Through the tube-pulling structure, the connection between the collecting tubes is no longer a saddle-mouth connection. The abandoned welding process makes the connecting tubes one-piece, avoiding weld fracture at the collecting tubes, and also avoiding the risk of fracture caused by incomplete welding or false welding and leaking welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram of the existing liquid collecting pipe connection method;

[0015] Figure 2 A schematic diagram of an embodiment of a candle filter collecting pipe filter element fixing structure;

[0016] Figure 3 Figure 2 Partial view of section A.

[0017] Legend: 1. Liquid collecting pipe interface; 2. Filter element interface; 3. Elastic sealing ring; 4. Pull-out hole structure; 5. Connecting nut; 6. Liquid collecting pipe; 7. Filter element. DETAILED DESCRIPTION

[0018] The specific structure and function of the guardrail upright disclosed in this invention are specifically described below.

[0019] Reference Figure 2 and Figure 3 As shown, in this embodiment: a large candle-type filter collecting pipe filter element fixing structure includes a collecting pipe 6 interface 1 and a filter element 7 interface 2, an elastic sealing ring 3 is provided at the collecting pipe 6 interface 1 and the filter element 7 interface 2, and a pull-out hole structure 4 is formed at the connecting position between the collecting pipe 6 interface 1 and the collecting pipe 6.

[0020] In order to achieve better docking, a mounting groove is provided at the interface 1 of the liquid collecting pipe 6 corresponding to the position of the elastic sealing ring 3, and the interface 2 of the filter element 7 is a plane.

[0021] In this embodiment, the connection position also includes a connecting nut 5, and the interface 1 of the liquid collecting pipe 6 and the interface 2 of the filter element 7 are both provided with a step opening. The diameter of the small end of the connecting nut 5 is smaller than the diameter of the step opening of the interface 2 of the filter element 7. The large end of the connecting nut 5 is provided with an internal thread, and the step opening of the interface 1 of the liquid collecting pipe 6 is provided with an external thread. The large end of the connecting nut 5 is connected to the interface 1 of the liquid collecting pipe 6 through a thread.

[0022] Because it is an annular connection port, in this embodiment, the elastic sealing ring 3 is a rubber O-ring.

[0023] In summary, through the setting of the elastic sealing ring 3, when the filter element 7 is impacted, a certain angle of shaking range can be formed between the interface 2 of the filter element 7 and the interface 1 of the liquid collecting pipe 6, while ensuring that there is no leakage. Such a setting is more reasonable than a purely rigid connection setting, which cushions the impact on the filter element 7, avoids breakage between the filter element 7 and the liquid collecting pipe 6 or the filter element 7 falls off, and greatly improves the stability of the filter.

[0024] Through the tube pulling structure, the connection between the collecting pipe 6 and the collecting pipe 6 interface 1 is no longer a saddle-mouth connection method, and the abandoned welding process makes the connecting pipes integrally formed, avoiding weld breakage at the collecting pipe 6, and also avoiding the risk of breakage caused by incomplete welding or false welding and leaking welding.

[0025] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A large candle filter collecting pipe filter element fixing structure, comprising a collecting pipe interface (1) and a filter element interface (2), characterized in that: An elastic sealing ring (3) is provided at the liquid collecting pipe interface (1) and the filter element interface (2), and a hole extraction structure (4) is formed at the connection position between the liquid collecting pipe interface (1) and the liquid collecting pipe (6).

2. A large candle filter collecting pipe filter element fixing structure according to claim 1, characterized in that: The liquid collecting pipe interface (1) is provided with a mounting groove at a position corresponding to the elastic sealing ring (3), and the filter element interface (2) is a plane.

3. A large candle filter collecting pipe filter element fixing structure according to claim 2, characterized in that: It also comprises a connecting nut (5), the collecting pipe interface (1) and the filter element interface (2) are both provided with a step opening, the diameter of the small end of the connecting nut (5) is smaller than the diameter of the step opening of the filter element interface (2), the large end of the connecting nut (5) is provided with an internal thread, the step opening of the collecting pipe interface (1) is provided with an external thread, and the large end of the connecting nut (5) is connected to the collecting pipe interface (1) via a thread.

4. A large candle filter collecting pipe filter element fixing structure according to claim 3, characterized in that: The elastic sealing ring (3) is a rubber O-ring.

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