WO2012071815A1 - Anti-clogging raw water drinking machine for removing heavy metal - Google Patents

Abstract

Provided is an anti-clogging raw water drinking machine for removing heavy metal, which comprises a cylinder body (1), a piston rod (4), a piston (41), a first stage purification unit and a second stage purification unit. The first stage purification unit comprises a filter core (6) provided at the bottom of the cylinder body (1). The inner space of the filter core (6) forms a first channel (5) for the water passing therethrough. The second stage purification unit located above the first stage purification unit comprises an inner core (9) made from an adsorbent material, a macromolecule adsorption membrane (10) surrounding the periphery of the inner core (9), and an ultrafiltration membrane (11) surrounding the periphery of the macromolecule adsorption membrane (10). The inner space of the inner core (9) forms a second channel (8) for the water passing therethrough, which is communicated with the first channel (5). The lower end part of the piston rod (4) is located in the second channel (8). The two stage purification units are used for removing pollutants in the water, for example, heavy metal etc., so as to obtain the potable water which meets the potable water standard. Moreover, the raw water drinking machine has backwashing function. The piston type water pumping device provided can use the machine in the absence of power supply.

Description

 Raw water dispenser with heavy metal anti-blocking

Technical field

The invention belongs to the field of raw water treatment equipment, and particularly relates to a portable raw water dispenser which is resistant to heavy metal and is resistant to clogging, and is suitable for use in harsh conditions such as disaster areas, fields or battlefields.

Background technique

Nowadays, heavy metal pollution from electroplating, mining, metallurgy, chemical, printing and dyeing industries has become one of the main pollutants in water pollution. Heavy metals such as lead, chromium and mercury are harmful to the human body. At present, the raw water dispensers on the market are mostly used in households. These raw water dispensers can generally remove most of the impurities in the raw water, and can meet the needs of ordinary people for drinking water, but for harsh environmental conditions such as wild survival, natural disasters or battlefield supply. Especially when there is no power supply, the ordinary raw water dispenser is difficult to meet the requirements. In addition, after the existing raw water dispenser is used for a period of time, the filter element is easily blocked, which not only affects the use efficiency of the raw water dispenser, but also shortens the service life of the raw water dispenser. Therefore, there is a particular need for a raw water treatment device that has a strong purification function, high purification efficiency, and can meet drinking water requirements without requiring electricity.

Summary of the invention

The invention aims to overcome the deficiencies of the prior art, and provides a manual convenient drinking water dispenser, which has stronger purifying function, higher purifying efficiency, and anti-blocking function, and can satisfy people's health in the absence of electric power. The demand for drinking water.

In order to solve the above technical problems, the technical solution adopted by the present invention is:

A raw water dispenser for removing heavy metal from clogging, comprising:

a cylinder having a water inlet at the bottom and a water outlet at the top;

a piston rod, the lower end portion of which is vertically inserted into the cylinder body and slidably disposed along the height direction of the cylinder body, and the upper end portion of the piston rod is connected with a handle;

a piston fixedly coupled to a lower end of the piston rod;

The raw water dispenser further includes:

a primary purification unit comprising a filter element disposed at a bottom of the cylinder, the filter element comprising a porous stainless steel inner core and a microfiltration membrane disposed on a periphery of the stainless steel inner core, the inner space of the filter element forming a primary passage through which the water supply passes;

a secondary purification unit, which is located above the primary purification unit, and includes an inner core made of an adsorbent material extending along a height direction of the cylinder, and a polymer adsorption membrane surrounding the outer periphery of the inner core, and is disposed around An ultrafiltration membrane on the outer periphery of the polymer adsorption membrane, the inner space of the inner core constitutes a secondary passage through which the water is supplied;

The primary purification unit and the water inlet are connected by a water inlet passage, the first passage is connected with the secondary passage, and a check valve is arranged between the two, the primary purification unit and the secondary purification unit Separated by a partition, and the partition is provided with at least one through hole having a diameter of between 0.8 mm and 1.2 mm;

The lower end of the piston rod is located in the secondary passage, and the piston is sealingly connected to the inner wall of the secondary passage.

Preferably, the microfiltration membrane is pleated, in order to increase the surface area of the microfiltration membrane to achieve a better purification effect; more preferably, the surface area of the microfiltration membrane can be set to 1.1 to 2 times the surface area of the ultrafiltration membrane. .

Preferably, the primary purification unit further comprises a nylon mesh disposed at a periphery of the microfiltration membrane.

Preferably, the one-way valve is disposed on the partition, and the corresponding opening of the one-way valve has a diameter of between 2.0 and 2.6 mm.

Preferably, the primary channel coincides with the axial centerline of the secondary channel.

Preferably, the microfiltration membrane is made of polytetrafluoroethylene, and the membrane pore diameter is between 0.4 and 0.6 micrometers, which can filter out most of the large particulate matter and suspended matter in the water body.

Preferably, the inner core of the secondary purification unit is composed of a sintered activated carbon rod or an activated carbon-activated zeolite mixed sintered rod, and has a good adsorption effect on ammonia nitrogen substances, pigments and odor substances in the water body.

Preferably, the polymer adsorption membrane is a γ-polyglutamic acid adsorption membrane having a pore diameter of between 0.3 and 1 μm, and more preferably a γ-polyglutamic acid composite membrane disclosed in the patent of the publication No. CN100560192C. This adsorption membrane has a strong complexing ability to heavy metal ions and radioactive elements in water, so that they can be filtered out.

Preferably, the ultrafiltration membrane is made of polyvinylidene fluoride, and the pore diameter of the membrane is between 30 and 60 nanometers, which not only removes insoluble heavy metal components such as iron, aluminum, manganese and lead in water, but also filters out water. Bacteria and viruses such as Cryptosporidium and Piriflagellate.

The filter materials used in the above primary purification unit or secondary purification unit can be prepared commercially or by known methods.

In order to make the equipment easy to take water, the raw water dispenser of the invention can also be equipped with a water inlet pipe, and the water inlet pipe can be placed in the water inlet of the raw water dispenser to connect the two.

In order to facilitate the user to drink water, the raw water dispenser of the present invention further includes a cup cover that is disposed on the barrel.

Through the implementation of the above technical solutions, the raw water dispenser of the invention has many advantages compared with the existing water dispenser:

When the raw water dispenser of the invention is used, the raw water is purified by the two-stage purification unit, and the raw water is sequentially filtered through the microfiltration membrane, the adsorption material, the polymer adsorption membrane, and the ultrafiltration membrane to filter the water body. Suspended impurities and heterochromatic odor substances, etc., can also remove a variety of heavy metals and radioactive metal elements in water, as well as a variety of bacteria and viruses, to obtain pure drinking water that meets drinking water standards; a small through hole is formed in the partition between the secondary purification unit, so that a small portion of the water can be returned from the small through hole to the primary purification unit during the passage of the secondary purification unit, and The suspended impurities trapped by the primary purification unit are backwashed, so that the microfiltration membrane is not easily clogged, thereby enabling the raw water dispenser to have an anti-clogging function, thereby improving the purification efficiency of the raw water dispenser. The piston pumping arrangement enables the raw water dispenser to be used without power supply, which can satisfy people's health without drinking electricity, especially in the harsh environment of wild survival, natural disasters and battlefield operations. Water demand.

DRAWINGS

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

1 is a schematic view showing the structure of a façade using the raw water dispenser of the present invention;

Figure 2 is a front elevational view showing the partition plate and the check valve used in the raw water dispenser of the present invention;

Figure 3 is a top plan view of the partition plate and the check valve used in the raw water dispenser of the present invention;

4 is a schematic top plan view of a filter element in a primary purification unit of a raw water dispenser of the present invention;

Among them: 1, cylinder; 2, water inlet; 3, water outlet; 4, piston rod; 40, handle; 41, piston; 5, primary passage; 6, filter; 60, stainless steel core; Membrane; 62, nylon mesh; 7, water inlet channel; 8, secondary channel; 9, inner core; 10, polymer adsorption membrane; 11, ultrafiltration membrane; 12, check valve; 13, partition; Through hole; 14, rubber tube.

detailed description

The present invention will be further described in detail below with reference to specific embodiments, but is not limited to the embodiments.

Example 1

As shown in FIG. 1, the raw water dispenser according to this embodiment includes:

a cylinder 1 having a water inlet 2 at the bottom and a water outlet 3 at the top;

The piston rod 4, the lower end portion of the piston rod 4 is vertically inserted in the cylinder body 1 and is slidably disposed along the height direction of the cylinder body 1, the upper end portion of the piston rod 4 is connected with a handle 40;

a piston 41 fixedly coupled to a lower end portion of the piston rod 4;

The raw water dispenser further includes:

The primary purification unit comprises a filter element 6 disposed at the bottom of the barrel 1, the filter element 6 comprising a porous stainless steel inner core 60 and a microfiltration membrane 61 disposed at the periphery of the stainless steel inner core 60, the internal space of the filter element 6 constituting a water supply Passing through the primary channel 5;

a secondary purification unit, which is located above the primary purification unit, and includes an inner core 9 made of an adsorbent material extending in a height direction of the cylinder 1, and a polymer adsorption film 10 surrounding the outer periphery of the inner core 9. , the ultrafiltration membrane 11 surrounding the outer periphery of the polymer adsorption membrane 10, the internal space of the inner core 9 constitutes a secondary passage 8 through which water is supplied;

The primary channel 5 is in communication with the secondary channel 8, and the primary channel 5 coincides with the axis of the secondary channel 8, with a check valve 12 disposed therebetween; the primary purification unit and the secondary The cleaning units are separated by a partition plate 13, and the partition plate 13 is provided with two through holes having a hole diameter of 0.8 mm to 1.2 mm. In this embodiment, the check valve 12 is disposed at the center of the partition plate 13, The diameter of the opening corresponding to the one-way valve 12 is 2.5 mm; the first-stage purification unit and the water inlet 2 are connected through the water inlet passage 7, and the water inlet passage 7 is provided with a plastic support member 70, and the support member 70 is located at a The lower part of the purification unit is about 2 cm high, mainly functions to support the upper material, and the inside of the support member 70 is arranged in a grid type, and water can pass through the gap of the grid of the support member 70;

The lower end of the piston rod 4 is located in the secondary passage 8, and the piston 41 is sealingly connected to the inner wall of the secondary passage 8.

The top view of the filter element 6 is shown in FIG. 4. The porous stainless steel inner core 60 mainly functions to support and fix the microfiltration membrane 61. The microfiltration membrane 61 is arranged to fold into the stainless steel inner core 60, specifically referring to the authorization bulletin number. A method for fabricating a filter element in the patent CN101219299B to increase the surface area of the microfiltration membrane 61 to achieve a better purification effect; in this embodiment, the surface area of the microfiltration membrane 61 is set to 1.5 times the surface area of the ultrafiltration membrane 11; Further, a nylon mesh 62 is provided on the periphery of the microfiltration membrane 61.

In this embodiment, the material of the microfiltration membrane 61 is polytetrafluoroethylene, and the membrane pore diameter is between 0.4 and 0.6 micrometers;

The inner core 9 of the secondary purification unit is composed of a commercially available sintered activated carbon rod; the polymer adsorption membrane 10 is a self-made γ-polyglutamic acid composite adsorption membrane (the production method is referred to Chinese patent CN100560192C), and the membrane pore size is about 0.3 μm; The ultrafiltration membrane 11 is made of polyvinylidene fluoride and has a membrane pore size of about 35 nm.

The raw water dispenser of this embodiment further includes a cup cover that is disposed on the barrel 1 and a rubber tube 14 that can communicate with the water inlet 2.

According to the embodiment, the water used in the operation of the raw water dispenser is tap water with heavy metal ions, and the content of suspended solids, bacteria and heavy metal ions in the tap water to be filtered is detected before filtering.

The working principle of the raw water dispenser according to this embodiment is as follows:

First, the cup lid of the raw water dispenser is removed, and the rubber tube 14 is installed to communicate with the water inlet 2, the other end of the rubber tube 14 is immersed in the tap water, and the piston rod 4 is slowly lifted up until it is lifted up. At the top of the cylinder 1, at this time, the one-way valve 12 is automatically opened, and the water body is purified by the water inlet passage 2 through the water inlet passage 7 into the primary purification unit, and then flows into the primary passage 5, and then flows into the secondary passage through the one-way valve 12. Channel 8; the piston rod 4 at the top of the cylinder 1 is slowly pressed downward, the one-way valve 12 is automatically closed, and a part of the water in the secondary passage 8 is further purified by the secondary purification unit, and the water body is sequentially composed of the adsorbent material. The inner core 9, the polymer adsorption film 10 and the ultrafiltration membrane 11 obtain pure water, and another portion of the water in the secondary passage 8 is returned to the primary passage 5 through the minute through holes 130 opened in the partition plate 13, and further passes through The stainless steel inner core 60 flows to the microfiltration membrane 61 and the nylon mesh 62, so that the suspended matter and impurities trapped outside the microfiltration membrane 61 and the nylon mesh 62 can be flushed away from the outer surfaces of the microfiltration membrane 61 and the nylon mesh 62 to achieve a pair. Backwashing of the primary purification unit.

According to the raw water dispenser of the embodiment, about 80% of the purified water can be obtained at one time, and the other 20% of the water can realize the backwashing of the first-stage purification unit, so that it is not easy to block, thereby improving the purification efficiency of the raw water dispenser. And service life.

The filtered water was tested for the content of suspended solids, bacteria and heavy metal ions, and compared with the tap water before filtration, it was found that the raw water dispenser of this example can filter 99.9% of suspended solids, bacteria and heavy metal ions in tap water. The purified water obtained by the raw water dispenser of the present embodiment can reach the standard of healthy drinking water.

The present invention has been described in detail above, and is intended to be understood by a person skilled in the art of the invention, and is not intended to limit the scope of the invention. Modifications or modifications are intended to be included within the scope of the invention.

Claims (9)

1. A raw water dispenser for removing heavy metal from clogging, comprising: a cylinder (1) having a water inlet (2) at the bottom and a water outlet (3) at the top; a piston rod (4), a lower end portion of the piston rod (4) is vertically inserted into the cylinder (1) and slidably disposed along a height direction of the cylinder (1), and an upper end of the piston rod (4) The handle is connected to the handle (40); a piston (41) fixedly coupled to a lower end portion of the piston rod (4); The utility model is characterized in that the raw water dispenser further comprises: a primary purification unit comprising a filter element (6) disposed at the bottom of the barrel (1), the filter element (6) comprising a porous stainless steel inner core (60) and a microfiltration membrane disposed around the stainless steel inner core (60) ( 61), the inner space of the filter element (6) constitutes a primary passage (5) through which water is supplied; a secondary purification unit, located above the primary purification unit, comprising an inner core (9) made of an adsorbent material extending in a height direction of the cylinder (1), and surrounding the outer circumference of the inner core (9) a molecular adsorption film (10), an ultrafiltration membrane (11) surrounding the outer periphery of the polymer adsorption membrane (10), the inner space of the inner core (9) constitutes a secondary passage (8) through which water is supplied; The primary purification unit is connected to the water inlet (2) through a water inlet passage (7), and the primary passage (5) is connected to the secondary passage (8), and is disposed between the two. a check valve (12), the primary purification unit and the secondary purification unit are separated by a partition (13), and the partition (13) is provided with at least one through hole having a diameter of 0.8 mm to 1.2 mm. (130); The lower end of the piston rod (4) is located in the secondary passage (8), and the piston (41) is sealingly connected to the inner wall of the secondary passage (8). The raw water dispenser according to claim 1, wherein the microfiltration membrane (61) is pleated, and the surface area of the microfiltration membrane (61) is the ultrafiltration membrane (11). 1.1 to 2 times the surface area. 3. A water dispenser according to claim 1 or 2, wherein the primary purification unit further comprises a nylon mesh (62) disposed around the microfiltration membrane (61). The water dispenser according to claim 1, wherein the one-way valve (12) is disposed on the partition plate (13), and the one-way valve (12) has an opening diameter of 2.0. ~2.6 mm. 5. A water dispenser according to claim 1, characterized in that the primary channel (5) coincides with the axis of the secondary channel (8). The raw water dispenser according to claim 1, wherein the microfiltration membrane (61) is made of polytetrafluoroethylene and has a membrane pore size of 0.4 to 0.6 μm. The raw water dispenser according to claim 1, characterized in that the inner core (9) in the secondary purification unit is composed of a sintered activated carbon rod or an activated carbon-activated zeolite mixed sintered rod. The raw water dispenser according to claim 1 or 7, wherein the polymer adsorption membrane (10) is a γ-polyglutamic acid adsorption membrane having a membrane pore size of 0.3 to 1 μm. The raw water dispenser according to claim 8, wherein the ultrafiltration membrane (11) is made of polyvinylidene fluoride and has a membrane pore size of 30 to 60 nm.

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