Membrane rod fixing and sealing device of membrane filtration system

Abstract

The utility model relates to the technical field of filtering systems, in particular to a membrane rod fixing and sealing device of a membrane filtering system, which comprises a first sealing ring, a first sealing compression ring, a second sealing ring, a second sealing compression ring and a pressing plate which are sequentially arranged from the end part of a sealing cavity to an opening of the sealing cavity, the first sealing ring, the first sealing pressing ring, the second sealing ring and the second sealing pressing ring are sequentially arranged on the membrane rod in a sleeving mode, triangular bosses are arranged at the two ends of the first sealing pressing ring, and triangular grooves are formed in the contact faces of the first sealing ring and the two ends of the first sealing pressing ring and the contact faces of the second sealing ring and the two ends of the first sealing pressing ring; the first sealing ring, the first sealing pressing ring, the second sealing ring and the second sealing pressing ring are tightly pressed in the sealing cavity through the pressing plate, and the first sealing ring and the second sealing ring are in sealing contact with the membrane rod and the sealing cavity respectively. By adopting the combined design of the novel sealing compression ring and the sealing ring, the disassembly and assembly process of the membrane rod becomes simple and quick, and the maintenance time and cost are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering systems, in particular to a membrane rod fixing and sealing device of a membrane filtering system. Background Art

[0002] Membrane filtration technology is a separation technology widely used in water treatment, food processing, biopharmaceuticals and other fields. In the membrane filtration system, the membrane rod is the key filter element, and the fixation and sealing of the membrane rod directly affect the filtration efficiency and operation stability of the system. In the membrane filtration system, multiple membrane rods are generally plugged into a columnar fixing frame, and a sealing cavity is provided at both ends of the fixing frame. The two ends of the membrane rod are sealed and connected to the sealing cavity through a seal, so as to achieve the sealing fixation of the membrane rod. The traditional membrane rod fixing and sealing method uses an annular sealing ring for sealing. The annular sealing ring is pushed into the gap between the membrane rod and the sealing cavity by a tool in an interference fit manner, and then compressed with a pressure ring. When the above structure removes the membrane rod, even if the pressure ring is removed, the annular sealing ring is difficult to restore to its original state due to the interference fit, which makes it difficult to remove the sealing ring. In the end, the membrane rod can only be removed after the sealing ring is destroyed. There are problems such as difficult disassembly and assembly, easy damage to the membrane rod, and the inability to recycle the sealing ring. This not only increases the maintenance cost and affects the disassembly and assembly efficiency, but also affects the service life and operation efficiency of the membrane filtration system.

[0003] With the continuous development of membrane filtration technology, the performance requirements for membrane rod fixing and sealing devices are getting higher and higher. In order to meet market demand and improve the efficiency and life of membrane filtration systems, it is particularly important to develop a new type of membrane rod fixing and sealing device. Utility Model Content

[0004] The purpose of the utility model is to provide a membrane rod fixing and sealing device for a membrane filtration system, so as to solve the problems that the traditional membrane rod fixing and sealing method proposed in the above background technology is often difficult to disassemble and assemble, the membrane rod is easily damaged, and the sealing ring cannot be recycled, which not only increases the maintenance cost, but also affects the service life and operating efficiency of the membrane filtration system.

[0005] To achieve the above-mentioned purpose, the utility model provides a membrane rod fixing sealing device for a membrane filtration system, characterized in that it includes a first sealing ring, a first sealing pressure ring, a second sealing ring, a second sealing pressure ring and a pressure plate which are arranged in sequence along the end of the sealing cavity toward the opening of the sealing cavity, the first sealing ring, the first sealing pressure ring, the second sealing ring and the second sealing pressure ring are sequentially sleeved on the membrane rod, triangular bosses are arranged at both ends of the first sealing pressure ring, and triangular grooves are arranged on the contact surfaces of the first sealing ring, the second sealing ring and the two ends of the first sealing pressure ring; the pressure plate presses the first sealing ring, the first sealing pressure ring, the second sealing ring and the second sealing pressure ring tightly in the sealing cavity, and the first sealing ring and the second sealing ring are in sealing contact with the membrane rod and the sealing cavity respectively.

[0006] Preferably, a positioning retaining ring is provided at the end of the sealing cavity.

[0007] Preferably, the side of the first sealing ring away from the first sealing pressure ring is a planar structure.

[0008] Preferably, the side of the second sealing ring away from the first sealing pressure ring is a planar structure.

[0009] Preferably, a membrane edge is provided on the outer surface of the second sealing pressure ring.

[0010] Preferably, a circle of mounting holes is provided on the top edge of the pressure plate, and the pressure plate is mounted at the opening of the sealing cavity by bolts.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the membrane rod fixing sealing device of the membrane filtration system, the combination design of a new sealing pressure ring and a sealing ring is adopted, which makes the disassembly and assembly process of the membrane rod simple and quick, greatly reducing maintenance time and cost. The device has minimal impact on the membrane rod during the disassembly and assembly process, effectively avoiding damage to the membrane rod caused by violent disassembly and assembly in traditional methods, and extending the service life of the membrane rod. The new sealing structure design allows the sealing ring to be easily removed during the disassembly and assembly process and is not easily damaged, thereby improving the recycling rate of the sealing ring and reducing replacement costs. By optimizing the sealing structure, the device can ensure the stability and sealing of the membrane rod during the filtration process, thereby improving the operating efficiency and reliability of the entire membrane filtration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first sealing ring in the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the second sealing ring in the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the first sealing pressure ring in the utility model;

[0017] Figure 5 It is a structural schematic diagram of the second sealing pressure ring in the utility model;

[0018] Figure 6 It is a structural schematic diagram of the medium pressure plate of the utility model.

[0019] The meaning of each number in the figure is:

[0020] 1. First sealing ring; 11. Triangular groove; 2. First sealing pressure ring; 21. Triangular boss; 3. Second sealing ring; 4. Second sealing pressure ring; 41. Membrane edge; 5. Pressure plate; 51. Mounting hole; 6. Membrane rod; 61. Positioning retaining ring; 7. Sealing cavity. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a membrane rod fixing and sealing device for a membrane filtration system, such as Figure 1-Figure 6 As shown, a membrane rod fixing sealing device for a membrane filtration system comprises a first sealing ring 1, a first sealing pressure ring 2, a second sealing ring 3, a second sealing pressure ring 4, and a pressing plate 5 which are sequentially arranged along the end of the sealing cavity 7 toward the opening of the sealing cavity 7. The first sealing ring 1, the first sealing pressure ring 2, the second sealing ring 3, and the second sealing pressure ring 4 are sequentially sleeved on the membrane rod 6, and triangular bosses 21 are arranged at both ends of the first sealing pressure ring 2. The contact surfaces of the first sealing ring 1, the second sealing ring 3 and the two ends of the first sealing pressure ring 2 are provided with triangular grooves 11; the pressing plate 5 presses the first sealing ring 1, the first sealing pressure ring 2, the second sealing ring 3, and the second sealing pressure ring 4 tightly in the sealing cavity 7, and the first sealing ring 1 and the second sealing ring 3 are in sealing contact with the membrane rod 6 and the sealing cavity 7 respectively. A positioning retaining ring 61 is arranged at the end of the sealing cavity 7. The side of the first sealing ring 1 away from the first sealing pressure ring 2 is a plane structure. The side of the second sealing ring 3 away from the first sealing pressure ring 2 is a plane structure. The first sealing ring 1 , the second sealing ring 3 , the membrane rod 6 and the sealing cavity 7 are clearance-fitted.

[0023] During assembly, first insert the membrane rod 6 into the sealing cavity 7, then put the first sealing ring 1 on the membrane rod 6, and under the action of gravity, the first sealing ring 1 moves downward to the bottom of the sealing cavity 7, and its planar structure part contacts the positioning retaining ring 61, and then put the first sealing pressure ring 2 in, so that the triangular boss 21 contacts with the triangular groove 11 of the first sealing ring 1, and then put the second sealing ring 2 in, so that its triangular groove 11 contacts with the triangular boss 21 on the other end face of the first sealing pressure ring 2, and then press the second sealing ring 4 on the planar structure of the second sealing ring 2, and then fix it to the end of the sealing cavity 7 with the pressing plate 5. The pressing plate 5 presses the first sealing ring 1, the first sealing ring 2, the second sealing ring 3, and the second sealing ring 4. Under the action of the pressing force, the triangular boss 21 and the triangular groove 11 are further squeezed, so that the first sealing ring 1 and the second sealing ring 3 are deformed laterally, so that the inner wall of the first sealing ring 1 and the second sealing ring 3 are in sealing contact with the outer wall of the membrane rod 6, and the outer wall of the first sealing ring 1 and the second sealing ring 3 is in sealing contact with the inner wall of the sealing cavity 7, thereby realizing the sealing assembly of the membrane rod. The stability and efficiency of the membrane filtration process are ensured. Through the coordinated use of the first sealing ring and the second sealing ring, and the pressing effect of the outer pressing plate, the membrane rod can be firmly fixed in the cavity, and will not move or loosen due to pressure changes or mechanical vibrations during the filtration process. The entire fixed sealing device is compactly designed, and the components are closely matched, which not only reduces the occupied space, but also improves the reliability and durability of the device. At the same time, the pressing design ensures that the sealing ring and the pressure ring can still maintain good sealing and fixing effects during long-term use. During dismantling, first remove the pressure plate 5. After the pressure of the pressure plate 5 disappears, the sealing ring will return to its original shape and press toward the opening direction of the sealing cavity 7. After removing the second sealing pressure ring 4, due to the clearance fit between the sealing ring, the membrane rod and the sealing cavity, the second sealing ring 3, the first sealing pressure 2, and the first sealing ring 1 can be easily taken out in turn, which greatly shortens the efficiency of disassembly and assembly of the membrane rod, improves the reuse efficiency of the sealing ring, and greatly reduces the damage to the membrane rod.

[0024] Furthermore, one side of the second sealing ring 4 is in contact with the outer surface of the second sealing ring 3 , and the other side of the second sealing ring 4 is in contact with the surface of the pressure plate 5 . A membrane edge 41 is provided on the outer surface of the second sealing ring 4 to improve the outer sealing performance of the second sealing ring 4 .

[0025] Furthermore, a circle of mounting holes 51 is provided on the top edge of the pressing plate 5, and the pressing plate 5 is mounted at the end of the cavity 7 by bolts, so that the pressing plate 5 is fixed on the cavity 7 to tighten the internal sealing structure.

[0026] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A membrane rod fixing and sealing device for a membrane filtration system, characterized in that: The invention comprises a first sealing ring (1), a first sealing pressure ring (2), a second sealing ring (3), a second sealing pressure ring (4), and a pressure plate (5) which are sequentially arranged along the end of the sealing cavity (7) toward the opening of the sealing cavity (7); the first sealing ring (1), the first sealing pressure ring (2), the second sealing ring (3), and the second sealing pressure ring (4) are sequentially sleeved on the membrane rod (6); the first sealing pressure ring (2) is provided with a triangular boss (21) at both ends; the contact surfaces of the first sealing ring (1), the second sealing ring (3) and the first sealing pressure ring (2) at both ends are provided with a triangular groove (11); the pressure plate (5) presses the first sealing ring (1), the first sealing pressure ring (2), the second sealing ring (3), and the second sealing pressure ring (4) into the sealing cavity (7); the first sealing ring (1) and the second sealing ring (3) are in sealing contact with the membrane rod (6) and the sealing cavity (7) respectively.

2. The membrane rod fixing and sealing device for a membrane filtration system according to claim 1, characterized in that: A positioning retaining ring (61) is provided at the end of the sealing cavity (7).

3. The membrane rod fixing and sealing device for a membrane filtration system according to claim 1, characterized in that: The side of the first sealing ring (1) away from the first sealing pressure ring (2) is a planar structure.

4. The membrane rod fixing and sealing device for a membrane filtration system according to claim 1, characterized in that: The side of the second sealing ring (3) away from the first sealing pressure ring (2) is a planar structure.

5. The membrane rod fixing and sealing device for a membrane filtration system according to claim 1, characterized in that: The outer surface of the second sealing pressure ring (4) is provided with a membrane edge (41).

6. The membrane rod fixing and sealing device for a membrane filtration system according to claim 5, characterized in that: A circle of mounting holes (51) is provided on the top edge of the pressing plate (5), and the pressing plate (5) is mounted at the opening of the sealing cavity (7) by means of bolts.

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