Pouring tool for end face of micro-filtration membrane

Abstract

The utility model relates to the technical field of wastewater treatment equipment, in particular to a micro-filtration membrane end face pouring tool which comprises a glass fiber reinforced plastic container and a micro-filtration membrane pipe, certain spaces exist between the two ends of the micro-filtration membrane pipe and the two end faces of the glass fiber reinforced plastic container, and a first limiting assembly and a second limiting assembly are arranged in the spaces of the two ends of the micro-filtration membrane pipe respectively. The first limiting assembly comprises a first sealing plug and a fixed end cover plate, the first sealing plug penetrates through the fixed end cover plate, one end of the first sealing plug is matched with one end of the microfiltration membrane tube, and the other end of the first sealing plug is connected with the fixed end cover plate through a bolt; one end of the fixed end cover plate is matched with the other end of the microfiltration membrane tube, the other end of the fixed end cover plate is connected with the end cover through a bolt, hoops are arranged on the periphery of the joint of the fixed end cover plate and the glass fiber reinforced plastic container and the periphery of the joint of the end cover and the glass fiber reinforced plastic container, and the fixed end cover plate and the end cover are connected with the hoops. The membrane tube is uniformly fixed, and pouring liquid is prevented from flowing into the micro-filtration membrane tube or leaking out of the micro-filtration membrane tube.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, and in particular to a casting fixture for the end face of a microfiltration membrane. Background Technology

[0002] Softening is a crucial step in wastewater treatment, aiming to remove calcium and magnesium ions from the water to prevent scale formation in equipment and pipelines during subsequent desalination, thus extending equipment lifespan. Chemical softening technology involves adding softening agents (such as lime or soda ash) to the wastewater, causing calcium and magnesium ions to react and form insoluble calcium carbonate and magnesium carbonate precipitates. After softening, microfiltration membrane technology is used to separate the calcium carbonate and magnesium carbonate precipitates from the wastewater, ensuring the normal operation of subsequent processes.

[0003] Microfiltration membrane technology has made rapid progress in recent years, but there are a series of problems such as inconsistent specifications and sizes and a chaotic market structure. Microfiltration membrane products need to solve the following problems: First, the membrane products must be durable; second, the membrane products must be resistant to fouling and impact.

[0004] Membrane casting technology is an important guarantee for the performance of microfiltration membrane products. Existing microfiltration membrane elements have low rigidity and are prone to deformation, which can cause the membrane tube position to change. During the casting process, epoxy resin and curing agent have a certain degree of fluidity, and the curing time requires 2-3 days. During the curing process, the casting liquid is prone to leakage. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to solve the problems in the prior art mentioned above, such as the membrane tube position changing and the casting liquid easily leaking during the curing process, a casting fixture for the end face of the microfiltration membrane is provided to fix the membrane tube evenly in the container and prevent the casting liquid from flowing into the microfiltration membrane tube or leaking out.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a casting fixture for the end face of a microfiltration membrane includes a fiberglass container and multiple microfiltration membrane tubes located inside the fiberglass container. There is a certain space between the two ends of the microfiltration membrane tubes and the two end faces of the fiberglass container. A first limiting component and a second limiting component are respectively provided in the space at both ends of the microfiltration membrane tubes. The first limiting component includes a first sealing plug and a fixed end cover plate. The first sealing plug is disposed through the fixed end cover plate, with one end engaging with one end of the microfiltration membrane tube and the other end connected to the fixed end cover plate by bolts. The second limiting component includes a second sealing plug, a fixed plate, and an end cover. The second sealing plug is disposed through the fixed plate, with one end engaging with the other end of the microfiltration membrane tube and the other end connected to the end cover by bolts. Clamps are provided on the outer periphery of the connection between the fixed end cover plate and the fiberglass container, and both the fixed end cover plate and the end cover are connected to the clamps. A casting port is opened on the outer peripheral wall of the fiberglass container near both ends.

[0007] The microfiltration membrane tube is kept at a distance from the end face of the fiberglass container to facilitate the installation of the limiting component. The limiting component is used to fix the membrane tube axially and seal the end face to prevent the casting liquid from seeping into the inner cavity of the membrane tube. The bolted end cap and sealing plug or the fixed end cap plate and sealing plug are connected to facilitate the installation of the membrane tube. The clamps enhance the connection strength between the end cap and the fiberglass container, and between the fixed end cap plate and the fiberglass container to prevent leakage during high-pressure casting. The casting port is located at both ends of the fiberglass container to ensure that the casting liquid fills evenly from both sides and avoids air bubbles or voids.

[0008] According to one embodiment of the present invention, the first sealing plug is composed of a cylindrical section I, a transition section, a cylindrical section II, and a tail enlargement section, wherein the diameter of the cylindrical section II is larger than the diameter of the cylindrical section I.

[0009] Cylindrical section I is inserted into the microfiltration membrane tube, and cylindrical section II achieves a tight fit and seal with the microfiltration membrane tube; the enlarged tail section provides a bolt connection surface for easy fixation to the end cap or fixed end cap plate.

[0010] According to one embodiment of the present invention, one end of the cylindrical section I is a round head structure that extends into the microfiltration membrane tube, and one end of the tail enlargement section is a plane with a bolt hole.

[0011] The rounded head structure at one end of the cylindrical section I facilitates the insertion of the microfiltration membrane tube and reduces assembly damage; the bolt hole at one end of the enlarged tail section ensures uniform force during bolt connection and prevents the sealing plug from being misaligned.

[0012] According to one embodiment of the present invention, a flange is provided at the edge of the end cap or end cap fixing plate facing the fiberglass container, and the flange abuts against the end face of the fiberglass container.

[0013] The flange presses tightly against the end face of the fiberglass container to form a mechanical seal, preventing the casting liquid from leaking from the end cap or the joint between the end cap fixing plate and the container.

[0014] According to one embodiment of the present invention, an annular groove is provided on the flange, and a sealing ring is provided in the annular groove.

[0015] The sealing ring is embedded in the annular groove, which further improves the sealing performance between the end cap and the container, making it suitable for high-pressure casting conditions.

[0016] According to one embodiment of the present invention, the fiberglass container has limiting grooves near both ends.

[0017] The limiting groove and the convex edge of the clamp cooperate to accurately position the clamp, prevent it from sliding axially, and ensure that the clamping force of the end cap or end cap fixing plate is evenly distributed.

[0018] According to one embodiment of the present invention, the clamp includes a first retaining ring and a second retaining ring. One side edge of the first retaining ring and the second retaining ring is provided with a protruding edge that extends into the limiting groove. The other side of the first retaining ring and the second retaining ring is in close contact with the end cap or the end cap fixing plate.

[0019] The first and second retaining rings facilitate installation and disassembly, while the cooperation between the convex edge and the limiting groove enhances the locking reliability of the clamp.

[0020] According to one embodiment of the present invention, the microfiltration membrane tube is composed of a sintered tube and a PVDF membrane layer.

[0021] The sintered tube provides high-strength support, while the PVDF membrane layer enables precision filtration. The combination of the two ensures the structural integrity of the membrane tube during the casting process.

[0022] According to one embodiment of this utility model, the fiberglass container has an inner diameter of 153 mm and contains 37 microfiltration membrane tubes. This configuration optimizes space utilization, ensures uniform flow of the casting liquid, and is suitable for standardized production.

[0023] According to one embodiment of the present invention, the fiberglass container has a 5cm closed space at both ends formed by the solidification of the pouring liquid that enters through the pouring port.

[0024] The cured casting liquid forms a protective layer on the end face, preventing contamination or mechanical damage to the end of the microfiltration membrane tube, while also enhancing the overall structural strength.

[0025] The beneficial effects of this utility model are:

[0026] (1) Through the design of limiting components, sealing structure and pouring port, it is ensured that the pouring liquid evenly wraps the position near the end of the membrane tube without bubbles or defects;

[0027] (2) The sealing structure formed by the sealing plug, flange, sealing ring and clamp prevents the injection liquid from leaking or contaminating the inner cavity of the membrane tube;

[0028] (3) The design of split clamps and bolt connections facilitates assembly and disassembly;

[0029] (4) Sintered tube support and casting liquid curing layer improve the pressure resistance and durability of the membrane tube end face;

[0030] (5) The size of the fiberglass container matches the number of membrane tubes, which is suitable for mass production and ensures consistency. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0033] Figure 2 yes Figure 1 Side view.

[0034] Figure 3 yes Figure 2 Sectional view along the AA direction.

[0035] Figure 4 This is an assembly diagram of an embodiment of the present utility model.

[0036] Figure 5 This is a schematic diagram of the structure of the first sealing plug in an embodiment of this utility model.

[0037] In the diagram: 1. Fiberglass container; 2. Microfiltration membrane tube; 3. First sealing plug; 31. Cylindrical section I; 32. Transition section; 33. Cylindrical section II; 34. Tail enlargement section; 4. Fixed end cover plate; 5. Sealing ring; 6. Second sealing plug; 7. Fixing plate; 8. End cover; 81. Flange; 82. Annular groove; 9. Clamp; 91. First retaining ring; 92. Second retaining ring; 93. Protruding edge; 94. Connecting part; 95. Clearance part; 11. Pouring gate; 12. Limiting groove. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0039] To facilitate understanding of the following embodiments, the microfiltration membrane will now be explained.

[0040] Microfiltration membranes are membranes that, under pressure, allow only water and small molecules to pass through their numerous tiny pores on the membrane surface, becoming the permeate, while substances larger than the pore size are retained on the feed side, becoming the concentrate. This achieves the separation and concentration of the feed solution. Microfiltration membranes utilize the sieving mechanism of membranes to retain particles with diameters between 0.1 and 1 μm, such as suspended solids, bacteria, some viruses, and large colloids, under pressure.

[0041] like Figures 1-4 As shown, a casting fixture for the end face of a microfiltration membrane includes a fiberglass container 1 and multiple microfiltration membrane tubes 2 located inside the fiberglass container 1. A certain space exists between the two ends of the microfiltration membrane tubes 2 and the two end faces of the fiberglass container 1. A first limiting component and a second limiting component are respectively provided within the space at both ends of the microfiltration membrane tubes 2. The first limiting component includes a first sealing plug 3 and a fixed end cover plate 4. The first sealing plug 3 is disposed through the fixed end cover plate 4, with one end engaging with one end of the microfiltration membrane tube 2, and the other end connected to the fixed end cover plate via bolts. The plate 4 is connected, and the second limiting component includes a second sealing plug 6, a fixing plate 7 and an end cap 8. The second sealing plug 6 is set through the fixing plate 7, and one end of it is engaged with the other end of the microfiltration membrane tube 2. The other end of the second sealing plug 6 is connected to the end cap 8 by bolts. The outer periphery of the connection between the fixed end cap plate 4 and the fiberglass container 1 and the connection between the end cap 8 and the fiberglass container 1 are provided with clamps 9, and both the fixed end cap plate 4 and the end cap 8 are connected to the clamps 9. The outer periphery wall of the fiberglass container 1 near both ends is provided with a pouring port 11.

[0042] The end cap 8 has a flange 81 along its edge facing the fiberglass container 1, which abuts against the end face of the container 1. An annular groove 82 is formed on the flange 81, and a sealing ring 5 is disposed within the groove 82. Limiting grooves 12 are formed near both ends of the fiberglass container 1. The clamp 9 includes a first retaining ring 91 and a second retaining ring 92. One edge of the first retaining ring 91 and the second retaining ring 92 has a protruding edge 93 that extends into the limiting groove 12, and the other side of the first retaining ring 91 and the second retaining ring 92 abuts against the end cap 8. Connecting portions 94 are provided at both ends of the first retaining ring 91, which are connected to the second retaining ring 92 via connecting portions 94 and connecting bolts. A clearance portion 95 for the connecting bolt is provided near the first retaining ring 91.

[0043] The fixed end cover plate 4 serves as both the end cover 8 and the fixed plate 7, meaning its structure is a combination of the end cover 8 and the fixed plate 7. The other side of the first retaining ring 91 and the second retaining ring 92 located at the other end of the fiberglass container 1 is tightly abutted against the fixed end cover plate 4.

[0044] like Figure 5As shown, the first sealing plug 3 consists of a cylindrical section I 31, a transition section 32, a cylindrical section II 33, and a tail enlargement section 34. The diameter of the cylindrical section II 33 is larger than the diameter of the cylindrical section I 31. One end of the cylindrical section I 31 is a rounded structure that extends into the microfiltration membrane tube 2, and one end of the tail enlargement section 34 is a flat surface with a bolt hole. The structure of the second sealing plug 6 is the same as that of the first sealing plug 3.

[0045] In this embodiment, the microfiltration membrane tube 2 consists of a sintered tube and a PVDF membrane layer. The sintered tube has an outer diameter of 20 mm and an inner diameter of 12 mm, and the membrane layer is a PVDF polymer material uniformly coated on the inner wall of the sintered tube. The fiberglass container 1 has an inner diameter of 153 mm and contains 37 microfiltration membrane tubes 2. The fiberglass container 1 has a 5 cm closed space at both ends formed by the solidification of the casting liquid entering through the pouring port 11. The casting liquid is composed of epoxy resin and a curing agent mixed in a specific ratio.

[0046] During installation, one end of the microfiltration membrane tube 2 is first installed on the fixed end cover plate 4 using the first sealing plug 3 and bolts. At the same time, the other end of the microfiltration membrane tube 2 is also installed on the fixed plate 7 using the first sealing plug 3 and bolts. The fiberglass container 1 is then inserted from the end where the first sealing plug 3 and fixed plate 7 are installed until one end of the fiberglass container 1 contacts the fixed end cover plate 4. It is then reinforced with clamps 9. The other end of the fiberglass container 1 is then connected to the end cover 8 and finally reinforced with clamps 9 as well.

[0047] The clamp 9 serves as the mounting base and is fixed to the fiberglass container 1. The end cap 8 and the fixed end cap plate 4 are connected to the clamp 9 by the end cap fixing bolts. After tightening, the middle sealing ring 5 can effectively prevent the injection liquid from leaking. The wedge-shaped design of the first sealing plug 3 not only ensures that the injection liquid is prevented from leaking into the inner cavity of the microfiltration membrane tube 2 during the injection process, but also ensures the convenience of tooling disassembly.

[0048] During the casting process of the microfiltration membrane end face, the reasonable design of the position layout of the first sealing plug 3 ensures that the microfiltration membrane tube 2 is evenly fixed in the fiberglass container 1, which not only ensures that the casting liquid can be evenly distributed, but also ensures the aesthetic appearance.

[0049] In addition, sensor mounting holes (such as pressure and temperature sensors) are reserved on the fiberglass container 1 to monitor the pouring process parameters (pressure and curing temperature) in real time. Real-time temperature monitoring can ensure that the curing reaction is carried out within the optimal temperature range, avoiding defects caused by excessively high temperature (leading to bubbles and cracking) or too low temperature (incomplete curing). During the pouring process, a certain pressure needs to be maintained to ensure that the pouring liquid fully fills the gap between the membrane tubes.

[0050] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A casting tool for the end face of a microfiltration membrane, comprising a glass steel container (1) and a plurality of microfiltration membrane tubes (2) located in the glass steel container (1), characterized in that: There is a certain space between the two ends of the microfiltration membrane tube (2) and the two end faces of the fiberglass container (1). A first limiting component and a second limiting component are respectively provided in the space between the two ends of the microfiltration membrane tube (2). The first limiting component includes a first sealing plug (3) and a fixed end cover plate (4). The first sealing plug (3) is installed through the fixed end cover plate (4), with one end engaging with one end of the microfiltration membrane tube (2), and the other end connected to the fixed end cover plate (4) by bolts. The second limiting component includes a second sealing plug (6), a fixed plate (7), and... The end cap (8) and the second sealing plug (6) are installed through the fixing plate (7). One end of the second sealing plug (6) is connected to the end cap (8) by bolts. The outer periphery of the connection between the fixed end cap plate (4) and the fiberglass container (1) and the connection between the end cap (8) and the fiberglass container (1) are provided with clamps (9). The fixed end cap plate (4) and the end cap (8) are both connected to the clamps (9). The fiberglass container (1) has a pouring port (11) on the outer periphery near both ends.

2. The casting tool for the end face of a microfiltration membrane according to claim 1, characterized in that: The first sealing plug (3) is composed of cylindrical section I (31), transition section (32), cylindrical section II (33) and tail enlargement section (34), wherein the diameter of cylindrical section II (33) is greater than the diameter of cylindrical section I (31).

3. The casting tool for the end face of a microfiltration membrane according to claim 2, characterized in that: One end of the cylindrical section I (31) is a round head structure that extends into the microfiltration membrane tube (2), and one end of the tail enlargement section (34) is a flat surface with bolt holes.

4. The casting tool for the membrane end face of a microfilter according to claim 1, characterized in that: The end cap (8) or fixed end cap plate (4) is provided with a flange (81) on the edge of the side facing the fiberglass container (1), and the flange (81) is in close contact with the end face of the fiberglass container (1).

5. The casting tool for the membrane end face of a microfilter according to claim 4, characterized in that: The flange (81) has an annular groove (82) and a sealing ring (5) is provided in the annular groove (82).

6. The casting fixture for the end face of the microfiltration membrane according to claim 1, characterized in that: The fiberglass container (1) has limit grooves (12) near both ends.

7. The casting tool for the end face of a microfiltration membrane according to claim 6, characterized in that: The clamp (9) includes a first retaining ring (91) and a second retaining ring (92). One side edge of the first retaining ring (91) and the second retaining ring (92) is provided with a protruding edge (93) that extends into the limiting groove (12). The other side of the first retaining ring (91) and the second retaining ring (92) is tightly abutted against the end cap (8) or the fixed end cap plate (4).

8. The casting tool for the membrane end face of a microfilter according to claim 1, characterized in that: The microfiltration membrane tube (2) is composed of a sintered tube and a PVDF membrane layer.

9. The casting tool for the membrane end face of a microfilter according to claim 1, characterized in that: The fiberglass container (1) has an inner diameter of 153 mm and is equipped with 37 microfiltration membrane tubes (2).

10. The microfiltration membrane end face casting tooling of claim 1, wherein: The fiberglass container (1) has a 5cm closed space at both ends formed by the solidification of the pouring liquid that enters through the pouring port (11).

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