Water purifying device based on molecular sieve filter element

Abstract

The utility model provides a water purification device based on molecular sieve filter element, including detachable upper cover, shell and filter element, the upper cover is provided with water inlet hole and drain hole, filter element includes detachable adsorption unit and detachable filter unit, adsorption unit one end is connected with drain hole, and the other end is connected with filter unit, and the shell is provided with filter element. A filler is loaded in the adsorption unit and comprises a molecular sieve; and a filter material of the filter unit is a membrane material and is of a hollow fiber external pressure type structure. According to the utility model, beneficial trace elements in water can be retained while heavy metals in water are removed, and the device has detachable and backwashing functions, and is simple, efficient and good in effect.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, and in particular to a water purification device based on a molecular sieve filter element, which is used 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] In order to solve the technical problem that the existing water purification devices cannot simultaneously remove harmful heavy metals in water and retain beneficial trace elements in water, the utility model provides a water purification device based on a molecular sieve filter element. The device is simple and efficient, and can make full use of the adsorption characteristics of the molecular sieve to remove heavy metals in water while retaining beneficial trace elements in water.

[0005] The technical solution of the utility model is as follows:

[0006] A water purification device based on a molecular sieve filter element comprises a detachable upper cover, a shell and a filter element, wherein a cavity is arranged inside the shell, a water inlet hole and a drain hole are arranged on the upper cover, and the filter element comprises a detachable adsorption unit and a detachable filtration unit, wherein one end of the adsorption unit is connected to the drain hole, and the other end is connected to the filtration unit, and the adsorption unit is loaded with filler containing 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 water purification device.

[0008] Preferably, the connection between the adsorption unit and the drainage hole is a threaded sealing connection, which is convenient for disassembly and replacement.

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

[0010] Preferably, the filler contains 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.

[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, adsorb heavy metal ions on the surface of the molecular sieve, and 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 device is simple, efficient, and effective.

[0015] The filter element in this device is a detachable structure. On the one hand, the molecular sieve can be reused many times to reduce the cost of use; on the other hand, the corresponding water purification unit can be flexibly matched according to the quality of the raw water, which is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a structural schematic diagram of the adsorption unit in the utility model;

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

[0019] Among them, 1 is the drainage hole, 2 is the water inlet hole, 3 is the upper cover, 4 is the adsorption unit, 5 is the shell, 6 is the filter unit, and 7 is the filter element. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1

[0022] Reference Figure 1-3 The utility model provides a technical solution: a water purification device based on a molecular sieve filter element, comprising an upper cover 3, a shell 5 and a filter element 7, the upper cover 3 and the shell 5 are connected by a threaded seal, a cavity is provided inside the shell 5, a water inlet 2 and a drain hole 1 are provided on the upper cover 3, the filter element 7 comprises a detachable adsorption unit 4 and a detachable filter unit 6, one end of the adsorption unit 4 is connected to the drain hole 1 by a threaded seal, and the other end of the adsorption unit 4 is connected to the filter unit 6 by a buckle, and the adsorption unit 4 is loaded with a filler, which is a mixture of molecular sieve and activated carbon, wherein the ratio of molecular sieve to activated carbon is 1:1. The filter material of the filter unit 6 is a membrane material, and the membrane material is a hollow fiber external pressure structure.

[0023] The molecular sieve in the filler 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. The membrane material is a blend, at least two of 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 filter element is as follows:

[0025] 1. Water purification process:

[0026] When the faucet is turned on, raw water enters the water purification device housing 5 from the water inlet 2, and passes through the filtration unit 6 to remove pollutants such as particulate matter, silt, bacteria, viruses, colloids, and macromolecular organic matter in the water. Then, the raw water enters the adsorption unit 4, and after being fully adsorbed and removed by the molecular sieve, the raw water flows out of the water purification device through the drain hole 1.

[0027] 2. Flushing process:

[0028] 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 clean water to remove the pollutants attached to the filter material and discharge them from the device. Specifically, open the water purification tap, clean water enters the device from the drainage hole 1, backwashes the filter unit 6, and the flushed sewage flows out of the water purification device from the water inlet hole 2.

[0029] This filtration unit can effectively filter pollutants such as particulate matter, sediment, bacteria, viruses, colloids, macromolecular organic matter, etc. in the water.

[0030] 3. Activation process

[0031] When the water purification effect is not good, the adsorption unit 4 is disassembled and the molecular sieve is activated to achieve the effect of repeated use.

[0032] The utility model can not only remove heavy metals in water but also retain beneficial trace elements in the water, and has the functions of detachability and backwashing, and the device is simple, efficient and has good effect.

Claims

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

2. The water purification device according to claim 1, characterized in that: The upper cover (3) and the housing (5) are sealed and connected via threads.

3. The water purification device according to claim 1 or 2, characterized in that: The connection between the adsorption unit (4) and the drainage hole (1) is a threaded sealing connection.

4. The water purification device according to claim 1 or 2, characterized in that: The connection between the adsorption unit (4) and the filtration unit (6) is by threaded sealing or snap connection.

5. The water purification device 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.

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