Water purifying device based on molecular sieve annular filter element

Abstract

The utility model provides a water purifier based on molecular sieve annular filter element, including detachable upper cover, shell and filter element, the upper cover is provided with water inlet and drain hole, the filter element includes detachable adsorption unit and detachable filter unit, the adsorption unit is annular structure and is located outside the filter unit, and the shell is located outside the filter unit. A plurality of hole structures are arranged on the wall of the filter unit, one end of the filter unit is connected with the water inlet hole, the other end of the filter unit is of a blind hole structure, and the adsorption unit is loaded with a filler containing a molecular sieve; and the filter material of the filter unit is a membrane material. According to the utility model, beneficial trace elements in water are retained while heavy metals in water are removed, and the device has detachable and backwashing functions, is small and exquisite, and is convenient to install and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a water purification device based on a molecular sieve annular filter element for quickly removing heavy metals. Background Art

[0002] With the rapid development of industrialization and urbanization, the pollution of water resources is becoming increasingly serious. Among them, heavy metal pollutants are a common water pollution problem, posing a serious threat to human health. At present, the most common method of removing heavy metals in water purifiers is to use RO reverse osmosis membranes. RO reverse osmosis membranes have very small pore sizes, and only water molecules can pass through, while large molecules such as heavy metal ions cannot pass through. Therefore, reverse osmosis membranes can completely remove heavy metal pollutants in water and provide pure drinking water. However, when RO reverse osmosis membranes remove heavy metals, they will also remove trace elements in the water that are beneficial to the human body. Therefore, it is urgent to develop a filtration device that can both efficiently remove heavy metals in water and retain trace elements.

[0003] In order to balance the minerals in water, the prior art CN201520753909.4 achieves the function of supplementing minerals by adding a mineral activator into the filter element, but this method is costly and the content of trace elements is difficult to control. Summary of the invention

[0004] The utility model focuses on solving the problem that the existing water purification device cannot simultaneously remove harmful heavy metals in water and retain beneficial trace elements in water.

[0005] In order to overcome the defects of the prior art, the utility model provides a water purification device based on a molecular sieve annular filter element, which is simple and efficient and can fully utilize the adsorption characteristics of the molecular sieve to remove heavy metals in water while retaining beneficial trace elements in the water.

[0006] The water purification device based on the molecular sieve annular filter element comprises a detachable upper cover, a shell and a filter element, a cavity is arranged inside the shell, a water inlet hole and a drain hole are arranged on the upper cover, the filter element comprises a detachable adsorption unit and a detachable filtration unit, the adsorption unit is annular in structure and is located outside the filtration unit, a plurality of hole structures are arranged on the wall of the filtration unit, which are connected with the adsorption unit, one end of the filtration unit is connected with the water inlet hole, and the other end of the filtration unit is a blind hole structure, the adsorption unit is loaded with filler, and the filler contains molecular sieve.

[0007] Preferably, the upper cover and the shell are sealed by a thread, which makes it easy to open the upper cover and the shell to inspect and clean the dehydration device.

[0008] Preferably, the connection between the filter unit and the water inlet is a threaded sealing connection, which is easy to disassemble and replace.

[0009] Preferably, the connection between the adsorption unit and the filtration unit is a threaded sealing connection, which is convenient for disassembly and replacement.

[0010] Preferably, the filler in the adsorption unit is a mixture of molecular sieve and activated carbon, which can further reduce the cost. The molecular sieve is a natural molecular sieve or a synthetic molecular sieve, and the synthetic molecular sieve is one or more of silicon-aluminum-based, phosphate-based, and titanium-silicon-based.

[0011] Preferably, the filter material of the filter unit is a membrane material, and the membrane material is a hollow fiber external pressure structure. The membrane material is one or more of a microporous membrane, an ultrafiltration membrane, a nanofiltration membrane, and a reverse osmosis membrane.

[0012] The membrane material is a blend of at least two of polyvinylidene fluoride, polymethyl methacrylate, polysulfone, polyethersulfone, polyamide, polyimide, polyacrylamide, polyvinyl alcohol, chitosan, cellulose acetate, thermoplastic rubber, polyurethane, polyethylene, polypropylene and polytetrafluoroethylene. The filtration unit can effectively filter pollutants such as particulate matter, sediment, bacteria, viruses, colloids, macromolecular organic matter, etc. in the water body.

[0013] Beneficial effects of the utility model:

[0014] Through this device, the active groups on the surface of the molecular sieve can form ionic bonds or covalent bonds with heavy metal ions in the water, adsorbing heavy metal ions on the surface of the molecular sieve to achieve the purpose of removing heavy metals. At the same time, since the molecular sieve has no adsorption capacity for mineral ions such as calcium, magnesium, and zinc, the beneficial mineral ions such as calcium, magnesium, and zinc in the water can be retained. It also has the functions of detachability and backwashing, and the equipment is compact and easy to install and maintain.

[0015] The adsorption unit containing the molecular sieve in the device is a detachable annular structure. On the one hand, the molecular sieve can be reused many times to reduce the cost of use; on the other hand, the adsorption unit adopts an annular structure, which can shorten the length of the filter element, thereby realizing the miniaturization of the water purification equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the filter element in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the filter unit in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the adsorption unit in the utility model;

[0020] Among them, 1 is the water inlet hole, 2 is the drain hole, 3 is the upper cover, 4 is the shell, 5 is the adsorption unit, 6 is the filtration unit, and 7 is the filter element. DETAILED DESCRIPTION

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

[0022] Reference Figure 1-4 A water purification device based on a molecular sieve annular filter element, comprising an upper cover 3, a shell 4 and a filter element 7, wherein the upper cover 3 and the shell 4 are connected by threaded sealing, a cavity is arranged inside the shell 4, a water inlet hole 1 and a drain hole 2 are arranged on the upper cover 3, and the filter element 7 comprises a detachable adsorption unit 4 and a detachable filtration unit 6, the adsorption unit 5 is annular in structure and is located outside the filtration unit 6, and is connected to the filtration unit 6 by threaded sealing, a plurality of hole structures 8 are arranged on the wall of the filtration unit 6 for connecting the adsorption unit 5, one end of the filtration unit 6 is connected to the water inlet hole 1 by threaded sealing, and the other end of the filtration unit 6 is a blind hole structure, and a filler is loaded in the adsorption unit 5, and the filler is a mixture of molecular sieve and activated carbon, wherein the ratio of molecular sieve to activated carbon is 2:1. The filter material of the filtration unit 6 is a membrane material, and the membrane material is a hollow fiber external pressure structure, and the membrane material is one or more of a microporous membrane, an ultrafiltration membrane, a nanofiltration membrane and a reverse osmosis membrane.

[0023] The molecular sieve in the filler can be a natural molecular sieve or a synthetic molecular sieve, and the synthetic molecular sieve can be one or more of silicon-aluminum-based, phosphate-based and titanium-silicon-based. The membrane material can be one or more of the blend polyvinylidene fluoride, polymethyl methacrylate, polysulfone, polyether sulfone, polyamide, polyimide, polyacrylamide, polyvinyl alcohol, chitosan, cellulose acetate, thermoplastic rubber, polyurethane, polyethylene, polypropylene and polytetrafluoroethylene.

[0024] The working process of the water purification device based on the molecular sieve annular filter element is as follows:

[0025] Water purification process:

[0026] Turn on the faucet, and the raw water enters the water purification device from the water inlet 1, first passes through the filter unit 6 to remove pollutants such as particulate matter, silt, bacteria, viruses, colloids, and macromolecular organic matter in the water, and then enters the adsorption unit 5 through the pore structure 8 on the wall of the filter unit 6. After being fully adsorbed and removed by the molecular sieve, the raw water flows out of the water purification device through the drain hole 2.

[0027] Flushing process:

[0028] Open the water purification tap, and the purified water enters the device from the drainage hole 2 to backwash the filter unit 6, and the flushed sewage flows out of the water purification device from the water inlet hole 1. When there are too many pollutants in the water purification device, causing blockage and resulting in a small water flow rate, the device can be backwashed with purified water to remove the pollutants attached to the filter material and discharge them from the device.

[0029] Activation process:

[0030] The adsorption unit 5 in the device is a ring-shaped detachable structure. When the water purification effect is not good, the adsorption unit 5 can be detached to activate the molecular sieve to achieve the effect of repeated use.

[0031] In addition to removing heavy metals in water while retaining beneficial trace elements in the water, the utility model has detachable and backwashing functions, which can reduce consumers' usage costs; the adsorption unit adopts a ring structure, which can shorten the length of the filter element, thereby reducing the volume of the water purification equipment.

Claims

1. A water purification device based on a molecular sieve annular filter element, characterized in that: The invention comprises a detachable upper cover (3), a shell (4) and a filter element (7); the shell is provided with a cavity inside; the upper cover (3) is provided with a water inlet hole (1) and a water discharge hole (2); the filter element comprises a detachable adsorption unit (5) and a detachable filter unit (6); the adsorption unit (5) is an annular structure and is located outside the filter unit (6); a plurality of hole structures are provided on the wall of the filter unit (6) and are connected to the adsorption unit (5); one end of the filter unit (6) is connected to the water inlet hole (1); the other end of the filter unit (6) is a blind hole structure; and a filler is loaded in the adsorption unit.

2. A water purification device based on a molecular sieve annular filter according to claim 1, characterized in that: The upper cover (3) and the housing (4) are sealed and connected via threads.

3. A water purification device based on a molecular sieve annular filter according to claim 1 or 2, characterized in that: The connection between the filter unit (6) and the water inlet hole (1) is a threaded sealing connection.

4. A water purification device based on a molecular sieve annular filter according to claim 1 or 2, characterized in that: The connection between the adsorption unit (5) and the filtration unit (6) is a threaded sealing connection.

5. A water purification device based on a molecular sieve annular filter according to claim 1, characterized in that: The filter material of the filter unit (6) is a membrane material, and the membrane material is a hollow fiber external pressure structure.

6. A water purification device based on a molecular sieve annular filter according to claim 5, characterized in that: The membrane material is one or more of a microporous membrane, an ultrafiltration membrane, a nanofiltration membrane and a reverse osmosis membrane.

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