Filter tube butt joint structure and filter element

Abstract

The utility model discloses a filter tube butt joint structure and a filter element, and solves the technical problem that a detachable filter tube butt joint method with high strength and good sealing effect does not exist in the prior art. The filter tube butt joint structure is used for connecting at least two filter tubes, and comprises an upper joint, a lower joint, a lower joint and a lower joint, the upper end of the upper joint is connected with the lower end of an upper filter tube, and the lower end of the upper joint is provided with an upper inner step; the lower end of the lower joint is connected with the upper end of the lower filter pipe, and the upper end of the lower joint is provided with a lower inner step; the screw sleeve is provided with an upper outer step matched with the upper inner step and a lower outer step matched with the lower inner step; wherein a first thread mechanism is arranged between the upper outer step and the upper inner step, a second thread mechanism is arranged between the lower outer step and the lower inner step, and the tightening directions of the first thread mechanism and the second thread mechanism are opposite.

Description

Technical Field

[0001] This utility model relates to the technical field of filter elements, and more specifically, to filter tube connection structures and filter elements. Background Technology

[0002] Metal filter cartridges are widely used, with lengths typically ranging from 5 to 8 meters. However, the standard length of manufactured tubes is approximately 2 to 2.5 meters. Therefore, it is usually necessary to join two or more short filter tubes together to form a longer filter cartridge. Filter cartridges are thin-walled tubular components, and the traditional joining methods are primarily welding and bonding.

[0003] The welding method uses a hot-melt welding process, resulting in high connection strength. However, on-site gas protection at the welding interface is difficult to meet standards, and the welding quality is highly dependent on the skill level of the welding technicians. The work requires high technical expertise, consistency is hard to guarantee, and the filter cartridges are non-removable. For environments with installation height restrictions, longer filter cartridges will struggle to quickly meet usage requirements.

[0004] The adhesive bonding method primarily uses sealant to connect the upper and lower filter tubes, which can be used in lower-temperature installation environments. However, in high-temperature environments, the sealant will powder, lose its sealing effect, fail to meet sealing performance requirements, and the connection strength will also be affected.

[0005] Therefore, there is currently no filter tube connection method that is high in strength, has good sealing effect, and is easy to disassemble and assemble. Utility Model Content

[0006] The main purpose of this utility model is to provide a filter tube connection structure and filter element to solve the technical problem that there is no filter tube connection method with high strength, good sealing effect and convenient disassembly and assembly in the prior art.

[0007] To achieve the above objectives, this utility model first provides a filter tube connection structure, the technical solution of which is as follows:

[0008] A filter tube docking structure for connecting at least two filter tubes, the filter tube docking structure including:

[0009] The upper connector is connected at its upper end to the lower end of the upper filter tube, and the lower end of the upper connector is provided with an upper inner step.

[0010] The lower connector is connected at its lower end to the upper end of the lower filter tube, and the upper end of the lower connector is provided with a lower inner step.

[0011] A threaded sleeve having an upper outer step adapted to an upper inner step and a lower outer step adapted to a lower inner step;

[0012] The upper outer step and the upper inner step are provided with a first threaded mechanism, and the lower outer step and the lower inner step are provided with a second threaded mechanism. The tightening directions of the first threaded mechanism and the second threaded mechanism are opposite.

[0013] Compared with welding and bonding, the filter tube docking structure of this utility model has the following advantages: it adopts a threaded connection, which is simple in structure and low in processing and manufacturing cost; it has high connection strength, good sealing performance, and high reliability; it is easy to operate, and can be quickly disassembled and installed, which is convenient for on-site installation and maintenance, saving construction and maintenance costs, and has a great market advantage in application environments with limited installation height.

[0014] As a further improvement to the above-mentioned filter tube docking structure, a sealing gasket is provided between the top of the upper outer step and the top of the upper inner step, and between the bottom of the lower outer step and the bottom of the lower inner step.

[0015] As a further improvement to the aforementioned filter tube connection structure, the threaded sleeve is also provided with a wrench positioning hole for applying circumferential torque. This reduces workload and increases tightening strength, making it particularly suitable for on-site connection operations where filter element installation space is limited. Preferably, the number of wrench positioning holes is 2 to 8, which facilitates operation.

[0016] As a further improvement to the above-mentioned filter tube connection structure: the length of the first threaded mechanism and / or the second threaded mechanism is 2 to 10 cm. This ensures appropriate connection strength.

[0017] As a further improvement to the aforementioned filter tube connection structure, a locking mechanism is also included. This enhances the connection strength and improves stability during use.

[0018] As a further improvement to the aforementioned filter tube docking structure, the locking mechanism includes threaded through holes on the upper and lower outer steps, grooves on the upper and lower inner steps, and screws adapted to the threaded through holes and grooves. Thus, by inserting the screw into the groove for locking, the structure is simple, easy to operate, and provides a good locking effect, significantly improving stability during use. When it is necessary to disassemble or replace the filter tube, simply remove the screw and rotate the screw sleeve in the reverse direction to achieve quick disassembly and replacement of the filter tube, making it convenient, fast, and reliable.

[0019] As a further improvement to the aforementioned filter tube connection structure: the groove is annular, and the threaded through holes and screws are in at least three sets and evenly distributed. This results in more uniform stress distribution and better stability.

[0020] As a further improvement to the aforementioned filter tube connection structure, the distance between the upper and lower outer steps is 1–4 cm. This ensures that the threaded sleeve has high strength.

[0021] As a further improvement to the aforementioned filter tube connection structure: the filter tube includes a filter cylinder made of a porous metal film and an inner support body disposed inside the filter cylinder. Both the upper and lower connectors have a first step adapted to the filter cylinder and a second step adapted to the inner support body. Thus, both the upper and lower connectors fit tightly to the filter tube, further enhancing the strength of the filter tube connection section.

[0022] To achieve the above objectives, this utility model first provides a filter element, the technical solution of which is as follows:

[0023] The filter element includes at least two filter tubes, which are connected using the filter tube docking structure described above.

[0024] It is evident that the filter tube connection structure and filter element structure of this utility model are simple, have low processing and manufacturing costs, and possess high reliability and sealing performance. They can achieve rapid assembly and disassembly between filter tubes, effectively solving the technical problem that there is no high-strength, well-sealed, and detachable filter tube connection method in the existing technology. This has significant market development potential and application prospects.

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0026] The accompanying drawings, which form part of this utility model, are used to aid in understanding this utility model. The contents provided in the drawings and their related descriptions in this utility model can be used to explain this utility model, but do not constitute an improper limitation of this utility model.

[0027] In the attached diagram:

[0028] Figure 1 This is a schematic diagram of an embodiment of the filter tube connection structure and filter element of this utility model.

[0029] Figure 2 This is a cross-sectional view of an embodiment of the filter tube connection structure and filter element of this utility model.

[0030] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0031] The relevant markings in the above figures are:

[0032] 100-Upper connector, 110-Upper inner step, 200-Lower connector, 210-Lower inner step, 300-Threaded sleeve, 310-Upper outer step, 320-Lower outer step, 330-Sealing gasket, 340-Locking mechanism, 341-Threaded through hole, 342-Groove, 343-Screw, 350-Wrench positioning hole, 410-Upper filter tube, 420-Lower filter tube, 510-Filter cylinder, 520-Inner support body, 530-First step, 540-Second step. Detailed Implementation

[0033] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0034] The technical solutions and features provided in the various parts of this utility model, including the following description, can be combined with each other without conflict.

[0035] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0036] Regarding the terminology and units used in this utility model: The terms "comprising," "having," and any variations thereof in the specification, claims, and related parts of this utility model are intended to cover non-exclusive inclusion.

[0037] Figure 1 This is a schematic diagram of the filter tube connection structure and the filter element structure of this utility model. Figure 2 This is a cross-sectional view of the filter tube connection structure and filter element of this utility model. Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0038] like Figure 1-3 As shown, the docking structure for connecting at least two filter tubes includes an upper connector 100, a lower connector 200, a threaded sleeve 300, and a locking mechanism 340.

[0039] The upper end of the upper connector 100 is connected to the lower end of the upper filter tube 410, and the lower end of the upper connector 100 is provided with an upper inner step 110.

[0040] The lower end of the lower connector 200 is connected to the upper end of the lower filter tube 420, and the upper end of the lower connector 200 is provided with a lower inner step 210.

[0041] The threaded sleeve 300 has an upper outer step 310 adapted to the upper inner step 110 and a lower outer step 320 adapted to the lower inner step 210; a sealing gasket 330 is provided between the top of the upper outer step 310 and the top of the upper inner step 110 and between the bottom of the lower outer step 320 and the bottom of the lower inner step 210; the distance between the upper outer step 310 and the lower outer step 320 is 1 to 4 cm; the threaded sleeve 300 is also provided with a wrench positioning hole 350 for applying circumferential torque.

[0042] A first threaded mechanism is provided between the upper outer step 310 and the upper inner step 110, and a second threaded mechanism is provided between the lower outer step 320 and the lower inner step 210. The tightening directions of the first threaded mechanism and the second threaded mechanism are opposite. The lengths of both the first threaded mechanism and the second threaded mechanism are 2 to 10 cm.

[0043] The locking mechanism 340 includes threaded through holes 341 on the upper outer step 310 and the lower outer step 320, grooves 342 on the upper inner step 110 and the lower inner step 210, and screws 343 adapted to the threaded through holes 341 and the grooves 342; the grooves 342 are annular, and the threaded through holes 341 and screws 343 are in three sets and evenly distributed.

[0044] The filter tube includes a filter cylinder 510 made of a porous metal film and an inner support 520 disposed inside the filter cylinder 510. The upper connector 100 and the lower connector 200 each have a first step 530 adapted to the filter cylinder 510 and a second step 540 adapted to the inner support 520.

[0045] The filter element comprises at least two filter tubes, which are joined together using the filter tube joining structure described above. After joining the at least two filter tubes to the required length, a head connector and a tail connector are applied, and finally, the filter element is installed on the filter's perforated plate, thus completing the filter element installation.

[0046] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the above description of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A filter tube docking structure for connecting at least two filter tubes, characterized in that: The filter tube connection structure includes: The upper connector (100) is connected at its upper end to the lower end of the upper filter tube (410), and the lower end of the upper connector (100) is provided with an upper inner step (110). The lower connector (200) is connected at its lower end to the upper end of the lower filter tube (420), and the upper end of the lower connector (200) is provided with a lower inner step (210). A threaded sleeve (300) having an upper outer step (310) adapted to an upper inner step (110) and a lower outer step (320) adapted to a lower inner step (210); Among them, a first threaded mechanism is provided between the upper outer step (310) and the upper inner step (110), and a second threaded mechanism is provided between the lower outer step (320) and the lower inner step (210). The tightening directions of the first threaded mechanism and the second threaded mechanism are opposite.

2. The filter tube connection structure as described in claim 1, characterized in that: A sealing gasket (330) is provided between the top of the upper outer step (310) and the top of the upper inner step (110) and between the bottom of the lower outer step (320) and the bottom of the lower inner step (210).

3. The filter tube connection structure as described in claim 1, characterized in that: The threaded sleeve (300) is also provided with a wrench positioning hole (350) for applying circumferential torque.

4. The filter tube connection structure as described in claim 1, characterized in that: The length of the first thread mechanism and / or the second thread mechanism is 2 to 10 cm.

5. The filter tube connection structure as described in claim 1, characterized in that: It also includes a locking mechanism (340).

6. The filter tube connection structure as described in claim 5, characterized in that: The locking mechanism (340) includes a threaded through hole (341) on the upper outer step (310) and the lower outer step (320), a groove (342) on the upper inner step (110) and the lower inner step (210), and a screw (343) adapted to the threaded through hole (341) and the groove (342).

7. The filter tube connection structure as described in claim 6, characterized in that: The groove (342) is annular, and the threaded through hole (341) and screw (343) are at least two sets and are evenly distributed.

8. The filter tube connection structure as described in claim 1, characterized in that: The distance between the upper outer step (310) and the lower outer step (320) is 1 to 4 cm.

9. The filter tube connection structure as described in claim 1, characterized in that: The filter tube includes a filter cylinder (510) made of a porous metal film and an inner support (520) disposed inside the filter cylinder (510). The upper connector (100) and the lower connector (200) each have a first step (530) adapted to the filter cylinder (510) and a second step (540) adapted to the inner support (520).

10. A filter element comprising at least two filter tubes, characterized in that: The at least two filter tubes are connected using the filter tube docking structure described in any one of claims 1-9.

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