Sealing and connecting device for metal filter bag

Abstract

The utility model discloses a metal filter bag sealing and connecting device which comprises a central pipe, positioning seats are fixedly connected to two ends of the central pipe, a positioning groove is formed in one end, far away from the central pipe, of each positioning seat, a rubber pipe is fixed in the center of each positioning groove, and a plurality of screw holes are formed in the positioning grooves and located on the periphery of the rubber pipe. An end cover is inserted into the outer end of each positioning seat, each end cover comprises a first cover plate and a second cover plate, the first cover plates and the second cover plates are semicircular, and the first cover plates and the second cover plates are clamped. The flange on the metal filter bag is installed on one positioning seat, the flange on the external pipeline is installed on the other positioning seat, the rubber pipe is inserted into the flange, and the rubber pipe is elastic and can be tightly attached to the inner wall of the flange, so that liquid leakage is prevented, and the sealing performance is improved.

Description

A metal filter bag sealing connection device Technical Field

[0001] This utility model relates to the field of metal filter bag technology, specifically a metal filter bag sealing connection device. Background Technology

[0002] The metal filter bag has a cylindrical structure, with a metal cylinder on the outside and a filter membrane inside. The metal cylinder is equipped with an inlet pipe and an outlet pipe. Liquid enters through the inlet pipe, is filtered by the filter membrane, and is discharged clean through the outlet pipe.

[0003] When using metal filter bags, the inlet end needs to be connected to the external pipeline. Currently, the following problems exist when connecting them: (1) Metal filter bags are generally connected to the flange of the external pipeline through the flange on the filter bag, and are sealed by the sealing rings embedded in the two flanges. However, once the sealing rings age, the sealing performance will be poor; (2) The flange is exposed to the outside for a long time, and the bolts on the flange are prone to corrosion, which affects the stability of the flange and thus affects the sealing performance. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a metal filter bag sealing connection device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A metal filter bag sealing connection device includes a central tube, with positioning seats fixedly connected to both ends of the central tube. A positioning groove is provided at the end of the positioning seat away from the central tube. A rubber tube is fixed in the center of the positioning groove. Several screw holes are opened in the positioning groove around the rubber tube. An end cap is inserted into the outer end of each positioning seat. The end cap includes a first cover plate and a second cover plate. Both the first cover plate and the second cover plate are semi-circular and are interlocked.

[0007] Preferably, the lower end of the first cover plate is connected to a semi-circular first rubber plug, and the lower end of the second cover plate is connected to a semi-circular second rubber plug. A locking block is connected to the first rubber plug, and a locking groove matching the locking block is opened on the second rubber plug. After the first rubber plug and the second rubber plug are engaged, they can be inserted into the positioning groove.

[0008] In the above technical solution, the first rubber plug and the second rubber plug are connected by a locking block and a locking groove, which enables the first cover plate and the second cover plate to dock and form an end cap to seal the positioning groove.

[0009] Preferably, the sidewall of the positioning groove is provided with multiple grooves, each groove is provided with a clamping plate, and multiple screws matching the grooves are rotatably connected to the positioning seat. The inner end of the screw is connected to the corresponding clamping plate, and the outer end of the screw is connected to a handle.

[0010] The above technical solution involves inserting the flange into the positioning groove and rotating the screw to move the clamping plate toward the flange, thereby clamping the flange and making the positioning seat more stably connected to the flange.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) The flange on the metal filter bag is installed on one of the positioning seats, and the flange on the external pipe is installed on the other positioning seat. The rubber tube is inserted into the inside of the flange. Because the rubber tube is elastic, it will stick tightly to the inner wall of the flange to prevent liquid leakage and improve the sealing performance.

[0013] (2) After installation, the flange is located in the positioning groove and is sealed by the end cover, so that the flange is always hidden in the positioning groove, preventing corrosion of the flange and its bolts and extending its service life. Attached Figure Description

[0014] Figure 1 is a schematic diagram of this utility model;

[0015] Figure 2 is a cross-sectional view of this utility model;

[0016] Figure 3 is a schematic diagram of the end cap;

[0017] Figure 4 is a schematic diagram of the metal filter bag installation and connection with the external pipeline through this utility model.

[0018] In the diagram: 1-Central tube, 2-Positioning seat, 3-Positioning groove, 4-Rubber tube, 5-Screw hole, 6-First cover plate, 7-Second cover plate, 8-First rubber plug, 9-Second rubber plug, 10-Clamping block, 11-Groove, 12-Clamping plate, 13-Screw, 14-Handle, 15-Flange of metal filter bag, 16-Bolt, 17-Metal filter bag, 18-Flange of external pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] Please refer to Figures 1-4. A metal filter bag sealing connection device includes a central tube 1. Positioning seats 2 are fixedly connected to both ends of the central tube 1. A positioning groove 3 is provided at the end of the positioning seat 2 away from the central tube. A rubber tube 4 is fixed in the center of the positioning groove 3. Several screw holes 5 are opened in the positioning groove 3 around the rubber tube. An end cap is inserted into the outer end of each positioning seat 2. The end cap includes a first cover plate 6 and a second cover plate 7. Both the first cover plate 6 and the second cover plate 7 are semi-circular and are snapped together.

[0022] Specifically, the lower end of the first cover plate 6 is connected to a semi-circular first rubber plug 8, and the lower end of the second cover plate 7 is connected to a semi-circular second rubber plug 9. A locking block 10 is connected to the first rubber plug 8, and a locking groove matching the locking block is formed on the second rubber plug 9. After the first rubber plug 8 and the second rubber plug 9 are engaged, they can be inserted into the positioning groove 3. The rubber tube 4, the first rubber plug 8, and the second rubber plug 9 are all elastic.

[0023] The installation method in this embodiment is as follows:

[0024] After one of the positioning seats 2 is inserted into the flange 15 of the metal filter bag, the flange plate will enter the positioning groove 3, and the rubber tube 4 will be inserted into the flange and contact the inner wall of the flange. Since the rubber tube 4 is elastic, it will stick tightly to the inner wall of the flange, thus playing a sealing role. Then, the first rubber plug 8 on the first cover plate 6 is inserted into one side of the positioning groove 3, and the second rubber plug 9 on the second cover plate 7 is inserted into the other side of the positioning groove 3. The first rubber plug 8 and the second rubber plug 9 are connected by the locking block 10 and the locking groove, thereby fixing the first cover plate 6 and the second cover plate 7 onto the positioning seat 2 and sealing the positioning groove 3, so that the bolt 16 is hidden in the positioning groove. At the same time, since the first rubber plug 8 and the second rubber plug 9 are made of rubber and are elastic, the first rubber plug and the second rubber plug will stick tightly to the inner wall of the positioning groove, improving the sealing performance and preventing the bolts on the flange from corroding.

[0025] Meanwhile, another positioning seat 2 is installed on the flange 18 of the external pipe, thereby achieving the connection between the metal filter bag and the external pipe.

[0026] Example 2

[0027] The difference between this embodiment and Embodiment 1 is that the side wall of the positioning groove 3 is provided with multiple grooves 11, and a clamping plate 12 is provided in each groove 11. Multiple screws 13 that match the grooves are rotatably connected to the positioning seat 2. The inner end of the screw 13 is connected to the corresponding clamping plate 12, and the outer end of the screw 13 is connected to a handle 14. After the flange is inserted into the positioning groove 3, rotating the screw 13 can move the clamping plate 12 toward the flange, thereby clamping the flange and making the positioning seat more stably connected to the flange.

[0028] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal filter bag sealing connection device, characterized in that: It includes a central tube (1), with positioning seats (2) fixedly connected to both ends of the central tube (1). The positioning seat (2) is provided with a positioning groove (3) at the end away from the central tube. A rubber tube (4) is fixed in the center of the positioning groove (3). Several screw holes (5) are opened in the positioning groove (3) on the periphery of the rubber tube. An end cap is inserted into the outer end of each positioning seat (2). The end cap includes a first cover plate (6) and a second cover plate (7). The first cover plate (6) and the second cover plate (7) are both semi-circular, and the first cover plate (6) and the second cover plate (7) are snapped together.

2. The metal filter bag sealing connection device according to claim 1, characterized in that: The lower end of the first cover plate (6) is connected to a semi-circular first rubber plug (8), and the lower end of the second cover plate (7) is connected to a semi-circular second rubber plug (9). A locking block (10) is connected to the first rubber plug (8), and a locking groove matching the locking block is opened on the second rubber plug (9). After the first rubber plug (8) and the second rubber plug (9) are engaged, they can be inserted into the positioning groove (3).

3. The metal filter bag sealing connection device according to claim 2, characterized in that: The side wall of the positioning groove (3) is provided with multiple grooves (11), and each groove (11) is provided with a clamping plate (12). Multiple screws (13) matching the grooves are rotatably connected to the positioning seat (2). The inner end of the screw (13) is connected to the corresponding clamping plate (12), and the outer end of the screw (13) is connected to a handle (14).

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