Filtering membrane product structure with central pipe and end cover in threaded connection and filtering equipment

Abstract

The utility model relates to a filtering membrane product structure with a central pipe and an end cover in threaded connection and filtering equipment, and belongs to the field of water purification. The utility model discloses a filter membrane product structure with a central tube and an end cover in threaded connection, which comprises the following components: a central tube of which two ends are provided with external threads; the end covers are arranged at the two ends of the central pipe, each end cover comprises an inner ring part, an outer ring part and a plurality of reinforcing ribs connected with the inner ring part and the outer ring part, a central through hole penetrating through the inner ring part is formed in the inner ring part, and an internal thread matched with the external thread is formed in the central through hole; the central pipe and the end covers are made of plastic materials. The external threads are formed at the two ends of the central pipe, and the matched internal threads are formed in the central through holes of the end covers, so that the end covers and the central pipe can be tightly and firmly connected, assembly and disassembly are facilitated, pressure generated by water pressure can be effectively borne, and the problem of water leakage possibly occurring in long-time operation is solved.

Description

Technical Field

[0001] The utility model relates to a filter membrane product structure with a central tube and an end cover threadedly connected, belonging to the field of water purification. Background Art

[0002] Reverse osmosis filtration technology is a water treatment technology that uses a semipermeable membrane to establish a pressure difference between solutions of different concentrations, so that the solvent in the solution can be purified by reversely passing through the membrane. This technology can effectively remove bacteria, viruses, heavy metal ions and most organic matter and inorganic salts in water, and is widely used in drinking water purification, wastewater treatment and seawater desalination. Through the reverse osmosis process, high-purity water can be obtained to meet the strict requirements of water quality in different fields.

[0003] The reverse osmosis filtration device provides the necessary pressure through a high-pressure pump, so that the raw water passes through the pretreatment system to remove large particles and suspended solids, and then is pushed to the reverse osmosis membrane module for filtration. The reverse osmosis membrane is the core part of the device. It can intercept most dissolved solids and all microorganisms, produce high-quality water, and consume relatively low energy. The design and operation of the entire system are aimed at maximizing water utilization while reducing operating costs.

[0004] In plastic reverse osmosis filtration devices, the center tube and the end cap are usually connected by glue. Although this connection method can provide sufficient sealing and stability in the early stage, over time, the aging of the glue may cause gaps in the connection, thereby reducing the sealing performance of the entire filtration device. Under long-term impact of water flow and erosion by chemicals, the glue joints may gradually become loose, which not only affects the filtration effect, but may also cause water pollution or equipment leakage. Utility Model Content

[0005] The utility model aims to provide a filter membrane product structure with a central tube and an end cover threadedly connected, which can improve the sealing performance.

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

[0007] In one aspect, the present application provides a filter membrane product structure having a central tube and an end cap threadedly connected, comprising:

[0008] A central tube, with external threads formed at both ends of the central tube;

[0009] End caps are arranged at both ends of the central tube, the end caps include an inner ring portion, an outer ring portion and a plurality of reinforcing ribs connecting the inner ring portion and the outer ring portion, the inner ring portion is provided with a central through hole penetrating the inner ring portion, and the central through hole is formed with an internal thread matching the external thread;

[0010] The central tube and the end cover are made of plastic material.

[0011] Furthermore, the outer ring portion includes a sealing portion and a reinforcement portion arranged on the sealing portion, the inner sides of the sealing portion and the reinforcement portion are connected to the reinforcing rib, the reinforcement portion is wide at the top and narrow at the bottom, the narrow end face of the reinforcement portion is connected to the sealing portion, and a reinforcement groove for accommodating the reinforcement piece is formed on the outer side of the reinforcement portion.

[0012] Furthermore, the sealing part includes a first sealing layer connected to the reinforcement part, a sealing base connected to the first sealing layer, and a second sealing layer connected to the sealing base. The radii of the first sealing layer and the second sealing layer are larger than the radius of the sealing base, and a sealing groove for accommodating a sealing ring is formed on the outer side of the sealing base.

[0013] Furthermore, the outer ring portion, the inner ring portion and the two side end surfaces of the reinforcing rib are respectively located in the same horizontal plane.

[0014] Furthermore, a socket is provided at one end of the central through hole, and sockets matching with the socket are provided at both ends of the central tube.

[0015] Furthermore, a plurality of accommodating cavities are formed between the inner ring portion, the outer ring portion and the reinforcing ribs, and water passages connecting adjacent accommodating cavities are provided on the reinforcing ribs.

[0016] Furthermore, the horizontal distance between each of the water channels and the central through hole is the same.

[0017] On the other hand, the present application provides a filtering device, which uses any of the above-mentioned filtering membrane product structures with a central tube and an end cap threadedly connected.

[0018] The beneficial effect of the utility model is that the application forms external threads at both ends of the central tube and forms matching internal threads on the central through hole of the end cover, so that the end cover and the central tube can be tightly and firmly connected. This threaded connection method is not only convenient for assembly and disassembly, but also can effectively withstand the pressure generated by water pressure, thereby reducing the water leakage problem that may occur during long-term operation.

[0019] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a filter membrane product structure with a central tube and an end cap threadedly connected, shown in one embodiment of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the central tube;

[0022] Figure 3 for Figure 2 A magnified schematic diagram of the structure in the middle;

[0023] Figure 4 for Figure 1 Structural schematic diagram of the middle end cover;

[0024] Figure 5 for Figure 4 A schematic structural diagram of the middle end cover from another perspective;

[0025] Figure 6 for Figure 1 Schematic diagram of the location of the water tank;

[0026] Figure 7 This is a schematic diagram of the position of a water channel shown in another embodiment of the utility model. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Please refer to Figure 1 The filter membrane product structure 100 with a central tube and an end cap threaded connection shown in a preferred embodiment of the present application includes a central tube 1 and an end cap 2. It should be noted that the present application is aimed at improving a plastic reverse osmosis filter device, so the central tube 1 and the end cap 2 mentioned in the present application are both made of plastic materials.

[0032] In conventional plastic reverse osmosis filtration devices, the central tube 1 and the end cap 2 are directly connected by glue, so no additional design is required for the connection between the central tube 1 and the end cap 2. As a result, after a period of use, the aging of the glue may cause gaps in the connection, which requires frequent replacement, greatly increasing the production cost.

[0033] Please refer to Figure 2 and Figure 3 In this embodiment, both ends of the central tube 1 are formed with external threads 11 to facilitate connection with the end caps 2. Since the central tube 1 is made of plastic material, it is not easy to form threads directly by machining, so this embodiment is integrally formed by injection molding.

[0034] Furthermore, both ends of the central tube 1 are provided with sockets 12, the diameter of which is smaller than the diameter of the tube body 13 of the central tube 1. The end cap 2 is provided with a socket 2112 that matches the socket 12, so that the central tube 1 and the end cap 2 are connected more tightly.

[0035] Please refer to Figure 4 and Figure 5 The end covers 2 are arranged at both ends of the central tube 1 , and the end covers 2 include an inner ring portion 21 , an outer ring portion 22 , and a plurality of reinforcing ribs 23 connecting the inner ring portion 21 and the outer ring portion 22 .

[0036] The inner ring portion 21 is provided with a central through hole 211 penetrating the inner ring portion 21, and the central through hole 211 is formed with an internal thread 2111 matching the external thread 11, and the end cap 2 is also integrally formed by injection molding to directly form the internal thread 2111. The socket 2112 is arranged at one end of the central through hole 211, and is located on one side of the internal thread 2111.

[0037] The outer ring portion 22 includes a sealing portion 221 and a reinforcing portion 222 arranged on the sealing portion 221. The sealing portion 221 is used to place a sealing ring (not shown) to improve the sealing performance when the filter membrane product structure 100 having a threaded connection between a center tube and an end cap is connected to other external components. The reinforcing portion 222 is used to place a reinforcing member (not shown) to improve the overall structural strength of the filter membrane product structure 100 having a threaded connection between a center tube and an end cap.

[0038] In this embodiment, the inner sides of the sealing portion 221 and the reinforcement portion 222 are both connected to the reinforcing ribs 23. This not only increases the rigidity of the end cover 2, but also ensures that the end cover 2 can evenly disperse the pressure when it is under pressure through the circumferentially uniform distribution of the reinforcing ribs 23, thereby reducing local stress concentration and improving the durability and reliability of the end cover 2.

[0039] In this embodiment, the reinforcement part 222 is located on the side where the upper socket 2112 of the end cover 2 is located, the reinforcement part 222 is wide at the top and narrow at the bottom, the narrow end surface of the reinforcement part 222 is connected to the sealing part 221, and a reinforcement groove 2221 for accommodating the reinforcement is formed on the outer side of the reinforcement part 222. The bevel design of the reinforcement part 222 can provide a larger contact area, which helps to improve the bonding strength between the reinforcement part and the end cover 2 and reduce stress concentration.

[0040] The sealing part 221 includes a first sealing layer 2211 connected to the reinforcing part 222, a sealing base 2213 connected to the first sealing layer 2211, and a second sealing layer 2212 connected to the sealing base 2213. The radii of the first sealing layer 2211 and the second sealing layer 2212 are larger than the radius of the sealing base 2213, and a sealing groove 2214 for accommodating a sealing ring is formed on the outer side of the sealing base 2213.

[0041] Please refer to Figure 6 A plurality of accommodating cavities 24 are formed between the inner ring portion 21, the outer ring portion 22 and the reinforcing ribs 23. The reinforcing ribs 23 are provided with water-passing grooves 231 for connecting adjacent accommodating cavities 24. In this embodiment, each water-passing groove 231 has the same horizontal distance from the central through hole 211, so that wastewater can flow between each accommodating cavity 24 along a circular flow channel, thereby balancing the water pressure.

[0042] Please refer to Figure 7 In another embodiment of the present application, the water grooves 231 are arranged in a staggered manner along the circumferential direction of the end cover 2, so that each accommodating cavity 24 has two water grooves 231 connected to the adjacent accommodating cavity 24, one of which is close to the central through hole 211, and the other is far from the central through hole 211. This allows the wastewater to flow in a wave-like manner between the accommodating cavities 24, so that the wastewater can flow more evenly between the accommodating cavities 24, avoiding the concentration of water flow in certain areas and idleness in other areas, and more balancing the water pressure.

[0043] Furthermore, along the circumferential direction of the end cover 2, the water channel 231 can be set so that the opening changes from large to small and then to large, so that the wastewater is accelerated when passing through the water channel 231, thereby passing through the water channel 231 more quickly. Optionally, the opening of the water channel 231 can also be uniformly set without changing the size.

[0044] In a conventional plastic reverse osmosis filtration device, when wastewater flows between the various accommodating chambers 24, since the central tube 1 and the end caps 2 are connected by glue, a gap is easily formed between the central tube 1 and the end caps 2 after a long period of use. Therefore, the height of the inner ring portion 21 will be slightly higher than the height of the outer ring portion 22, so that the top of the junction of the central tube 1 and the end caps 2 is higher than the height of the accommodating chamber, so that the wastewater will not enter the central tube 1 through the gap when flowing.

[0045] Please refer to Figure 5 However, in this embodiment, since the central tube 1 and the end cap 2 are connected by threads, it is not easy to form a gap between the central tube 1 and the end cap 2 after long-term use. Therefore, it is not necessary for the top of the joint of the central tube 1 and the end cap 2 to be higher than the height of the accommodating cavity. Therefore, in this embodiment, the end faces of the outer ring 22, the inner ring 21 and the reinforcing ribs 23 are respectively located in the same horizontal plane, so that the production cost can be reduced, and there is no need to consider the height difference between the inner ring 21 and the outer ring 22, which reduces the complexity of assembling the filter membrane product structure 100 with the central tube and the end cap threaded connection with other components.

[0046] The embodiment of the present application also discloses a filtering device, which uses the above-mentioned filtering membrane product structure 100 with a central tube and an end cap threaded connection. By using the filtering membrane product structure 100 with a central tube and an end cap threaded connection, the sealing performance of the device can be greatly enhanced, the service life of the device can be extended, and the cost can be reduced.

[0047] The present application forms external threads 11 at both ends of the central tube 1 and forms matching internal threads 2111 on the central through hole 211 of the end cap 2, so that the end cap 2 and the central tube 1 can be tightly and firmly connected. This threaded connection method is not only convenient for assembly and disassembly, but also can effectively withstand the pressure generated by water pressure, thereby reducing the water leakage problem that may occur during long-term operation.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A filter membrane product structure having a central tube and an end cap threadedly connected, characterized in that: include: A central tube, with external threads formed at both ends of the central tube; End caps are arranged at both ends of the central tube, the end caps include an inner ring portion, an outer ring portion and a plurality of reinforcing ribs connecting the inner ring portion and the outer ring portion, the inner ring portion is provided with a central through hole penetrating the inner ring portion, and the central through hole is formed with an internal thread matching the external thread; The central tube and the end cover are made of plastic material.

2. The filter membrane product structure with a central tube and an end cap threadedly connected as claimed in claim 1, characterized in that: The outer ring portion includes a sealing portion and a reinforcement portion arranged on the sealing portion, and the inner sides of the sealing portion and the reinforcement portion are both connected to the reinforcing rib; the reinforcement portion is wide at the top and narrow at the bottom, and the narrow end face of the reinforcement portion is connected to the sealing portion, and a reinforcement groove for accommodating the reinforcement piece is formed on the outer side of the reinforcement portion.

3. The filter membrane product structure with a central tube and an end cap threadedly connected as claimed in claim 2, characterized in that: The sealing part includes a first sealing layer connected to the reinforcing part, a sealing base connected to the first sealing layer, and a second sealing layer connected to the sealing base. The radii of the first sealing layer and the second sealing layer are larger than the radius of the sealing base, and a sealing groove for accommodating a sealing ring is formed on the outer side of the sealing base.

4. The filter membrane product structure with a central tube and an end cap threadedly connected as claimed in claim 2, characterized in that: A socket is arranged at one end of the central through hole, and sockets matching with the socket are arranged at both ends of the central pipe.

5. The filter membrane product structure with a central tube and an end cap threadedly connected as claimed in claim 2, characterized in that: The outer ring portion, the inner ring portion and the end surfaces on both sides of the reinforcing rib are respectively located in the same horizontal plane.

6. The filter membrane product structure with a central tube and an end cap threadedly connected as claimed in claim 2, characterized in that: A plurality of accommodating cavities are formed between the inner ring portion, the outer ring portion and the reinforcing ribs, and a water flow groove connecting adjacent accommodating cavities is provided on the reinforcing ribs.

7. The filtration membrane product structure with a central tube and an end cap threadedly connected as claimed in claim 6, characterized in that: The horizontal distance between each of the water channels and the central through hole is the same.

8. A filtering device, characterized in that: The filtering device uses the filtering membrane product structure with a central tube and an end cap threadedly connected as claimed in any one of claims 1 to 7.

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