Impact-resistant unpowered membrane water purification system

Abstract

The utility model provides an anti-impact unpowered membrane water purification system and relates to the technical field of water treatment. The utility model provides a water purification system. The water purification system comprises an ejector (1), a membrane pool (2) and a water production tank (3) which are sequentially communicated, the jet device (1) is communicated with a water distributor (21) of the membrane tank (2) and is used for introducing air into water to be treated to form a gas-solid-liquid mixed solution; power is not needed as a power source, and operation cost is low; electric or pneumatic valve control is not needed, the probability of part damage is reduced, rural discontinuous water use is utilized, water production can be automatically switched to emptying when the water use peak is low, operation and maintenance are simpler, and the service life is longer; large-bubble scouring is realized without air supply of an additional fan, and the surface of the membrane is effectively scoured; the composition is simple and the cost is low; and a three-way valve and a medicine storage box can be arranged to realize unpowered medicine washing.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to an impact-resistant, non-powered membrane water purification system. Background Technology

[0002] Ultrafiltration membranes offer advantages such as high filtration precision and excellent effluent quality, and are currently widely used in various fields, including water treatment, food, energy, electronics, pharmaceuticals, and chemicals. Ultrafiltration membranes can effectively address current rural drinking water safety issues; however, their water sources are susceptible to impacts from rainfall and other factors, making them vulnerable to high-turbidity raw water surges, which puts significant strain on the ultrafiltration membranes. In contrast, non-powered ultrafiltration membrane systems can better solve problems such as dispersed rural drinking water stations, power supply difficulties, and maintenance challenges. Therefore, there is an urgent need for a non-powered ultrafiltration membrane water purification system that is highly resistant to shocks and easily recoverable.

[0003] In view of the above, this utility model is hereby proposed. Utility Model Content

[0004] The purpose of this invention is to provide an impact-resistant, non-powered membrane water purification system to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] In the first aspect, this utility model provides an impact-resistant, non-powered membrane water purification system, comprising an ejector, a membrane tank, and a product water tank connected in sequence;

[0007] The jet injector is connected to the water distributor of the membrane tank and is used to introduce air into the water to be treated to form a gas-solid-liquid mixture.

[0008] The membrane tank is an open container, and inside it, from bottom to top, are arranged a water distributor, a gas-collecting pulse aeration device, and a membrane module. The water distributor is used to introduce the gas-solid-liquid mixture into the membrane tank. The gas-collecting pulse aeration device is used to collect the gas in the gas-solid-liquid mixture flowing out of the water distributor and to periodically aerate and flush the membrane module with the collected gas. The membrane module is used to filter the water to be treated.

[0009] The water production tank is connected to the water production port of the membrane module. The absolute height of the water production tank is lower than that of the membrane module, so that the purified water filtered by the membrane module flows into the water production tank under the action of siphon force.

[0010] The membrane tank is also equipped with a siphon drain pipe, which is used to drain the water in the membrane tank when the water level in the membrane tank is higher than the set water level.

[0011] As a further technical solution, a water inlet pipe is also included;

[0012] The water inlet pipe is connected to the water inlet of the jet injector, and a pre-filter, a flow meter and a water inlet shut-off valve are installed on the water inlet pipe.

[0013] The pre-filter is used for the initial filtration of the water to be treated.

[0014] As a further technical solution, the number of the gas-collecting pulse aeration device is at least one.

[0015] As a further technical solution, the membrane module includes a hollow fiber membrane.

[0016] As a further technical solution, the product water tank is equipped with a liquid level float valve for adjusting the opening and closing of the pipeline between the product water tank and the membrane module.

[0017] As a further technical solution, a water production shut-off valve is installed on the pipe connecting the water production tank and the membrane module.

[0018] As a further technical solution, a membrane tank support frame is also included;

[0019] The membrane tank support frame is located at the bottom of the membrane tank and is used to support the membrane tank.

[0020] As a further technical solution, the inlet end of the siphon drain pipe is located at the bottom inside the membrane tank, and the outlet end is located outside the membrane tank, with the absolute height of the outlet end being lower than that of the inlet end.

[0021] As a further technical solution, the set water level is higher than the membrane module but lower than the maximum water level of the membrane tank.

[0022] As a further technical solution, a three-way valve and a medicine storage tank are also included;

[0023] One end of the three-way valve is connected to the air intake of the jet injector, and the other two ends are connected to the medicine storage tank and the air, respectively. It is used to connect the medicine storage tank and the jet injector to introduce the medicine liquid from the medicine storage tank into the water to be treated, or to connect the air and the jet injector to introduce the air into the water to be treated.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. No electricity is required as a power source, resulting in low operating costs; 2. No electric or pneumatic valve control is needed, reducing the probability of component damage. Utilizing discontinuous water use in rural areas, it can automatically switch from water production to venting during off-peak water usage, simplifying operation and maintenance and extending service life; 3. Large bubble rinsing is achieved without the need for an additional blower, effectively rinsing the membrane surface; 4. The system has a simple composition and low cost; 5. Powerless chemical washing can also be achieved by setting up a three-way valve and a chemical storage tank. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is the impact-resistant, non-powered membrane water purification system provided in Embodiment 1 of this utility model;

[0028] Figure 2 The impact-resistant, non-powered membrane water purification system provided in Embodiment 2 of this utility model.

[0029] Icons: 1-Ejector; 2-Membrane tank; 21-Water distributor; 22-Air-collecting pulse aeration device; 23-Membrane module; 3-Permeate tank; 31-Level float valve; 32-Permeate shut-off valve; 4-Siphon drain pipe; 5-Inlet pipe; 51-Pre-filter; 52-Flow meter; 53-Inlet shut-off valve; 6-Membrane tank support frame; 7-Chemical storage tank; 71-Three-way valve. Detailed Implementation

[0030] The embodiments and examples of this utility model will be described in detail below. However, those skilled in the art will understand that the following embodiments and examples are only for illustrating this utility model and should not be considered as limiting the scope of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0031] In the first aspect, this utility model provides an impact-resistant, non-powered membrane water purification system, comprising an ejector 1, a membrane tank 2, and a product water tank 3 connected in sequence;

[0032] The jet injector 1 is connected to the water distributor 21 of the membrane tank 2, and is used to introduce air into the water to be treated to form a gas-solid-liquid mixture.

[0033] The membrane tank 2 is an open container, and inside it, from bottom to top, are arranged a water distributor 21, a gas-collecting pulse aeration device 22, and a membrane module 23. The water distributor 21 is used to introduce the gas-solid-liquid mixture into the membrane tank 2. The gas-collecting pulse aeration device 22 is used to collect the gas in the gas-solid-liquid mixture flowing out of the water distributor 21, and to periodically aerate and flush the membrane module 23 with the collected gas. The membrane module 23 is used to filter the water to be treated.

[0034] The water production tank 3 is connected to the water production port of the membrane module 23. The absolute height of the water production tank 3 is lower than that of the membrane module 23, so that the purified water filtered by the membrane module 23 flows to the water production tank 3 under the action of siphon force.

[0035] The membrane tank 2 is also equipped with a siphon drain pipe 4, which is used to drain the water in the membrane tank 2 when the water level of the water to be treated in the membrane tank 2 is higher than the set water level.

[0036] This water purification system automatically produces water using the water pressure within the membrane tank and the siphon force generated by the height difference between the membrane modules and the permeate tank, requiring no electricity. The permeate pipeline (connecting the membrane modules and the permeate tank) is located at the bottom of the membrane tank, reducing the vacuum requirements of the system piping. When air is present in the pipeline, preventing siphoning, the system is activated by the membrane tank pressure. Inlet water draws in air through an ejector and is evenly distributed to the air-collecting pulse aeration device via a distributor, effectively flushing the membrane modules with large air bubbles. The open membrane tank allows for larger sizes, effectively increasing its capacity to handle short-term high-turbidity raw water and preventing instantaneous caking within the membrane tank. Once the permeate tank is full, it is effectively emptied via a siphon drain pipe, reducing contaminant accumulation.

[0037] The above structure achieves powerless water production, large bubble aeration, automatic chemical washing, and automatic drainage without the need for fans, electric valves, or control programs. It has the advantages of low investment cost, simple maintenance, and strong shock resistance.

[0038] In some alternative implementations, a water inlet pipe 5 is also included;

[0039] The water inlet pipe 5 is connected to the water inlet of the jet injector 1, and the water inlet pipe 5 is equipped with a pre-filter 51, a flow meter 52 and a water inlet shut-off valve 53.

[0040] The pre-filter 51 is used for the initial filtration of the water to be treated;

[0041] The flow meter 52 is used to detect the flow rate of wastewater in the pipeline;

[0042] The inlet shut-off valve 53 is used to open or close the inlet.

[0043] In some alternative embodiments, the number of the gas-collecting pulse aeration device 22 is at least one.

[0044] It should be noted that the gas-collecting pulse aeration device 22 in this utility model refers to the pulse aeration device in patent 2024109250947.

[0045] In this invention, the number of gas-collecting pulse aeration devices 22 can be selected according to the size and specifications of the membrane tank 2.

[0046] In some alternative embodiments, the membrane assembly 23 includes a hollow fiber membrane.

[0047] In some optional embodiments, the product water tank 3 is provided with a liquid level float valve 31 for adjusting the opening and closing of the pipeline between the product water tank 3 and the membrane module 23.

[0048] When the water level in the product water tank 3 reaches the set water level, the level float valve 31 closes the pipeline between the product water tank 3 and the membrane module 23.

[0049] In some alternative embodiments, a product water shut-off valve 32 is provided on the pipe (product water pipe) connecting the product water tank 3 and the membrane module 23.

[0050] The water production pipeline can be manually closed or opened via the water production shut-off valve 32.

[0051] In some optional embodiments, a membrane pool support frame 6 is also included;

[0052] The membrane tank support frame 6 is located at the bottom of the membrane tank 2 and is used to support the membrane tank 2.

[0053] In some alternative embodiments, the inlet end of the siphon drain pipe 4 is located at the bottom inside the membrane tank 2, the outlet end is located outside the membrane tank 2, and the absolute height of the outlet end is lower than that of the inlet end.

[0054] In some alternative implementations, the set water level is higher than the membrane module 23 but lower than the maximum water level of the membrane tank 2.

[0055] In this invention, the water level can be set by the position of the bend in the siphon drain pipe 4.

[0056] In some alternative implementations, a three-way valve 71 and a medicine storage tank 7 are also included;

[0057] One end of the three-way valve 71 is connected to the air intake of the ejector 1, and the other two ends are connected to the medicine storage tank 7 and the air, respectively. It is used to connect the medicine storage tank 7 and the ejector 1 to introduce the medicine liquid in the medicine storage tank 7 into the water to be treated, or to connect the air and the ejector 1 to introduce the air into the water to be treated.

[0058] The jet injector 1, the three-way valve 71, and the drug storage tank 7 constitute a drug washing system, which enables non-powered drug washing of the membrane system.

[0059] The present invention will be further illustrated below with specific embodiments. However, it should be understood that these embodiments are only for more detailed illustration and should not be construed as limiting the present invention in any way.

[0060] Example 1

[0061] A shock-resistant, non-powered membrane water purification system, such as Figure 1 As shown, it includes a jet injector 1, a membrane tank 2, and a product water tank 3 connected in sequence;

[0062] The jet injector 1 is connected to the water distributor 21 of the membrane tank 2, and is used to introduce air into the water to be treated to form a gas-solid-liquid mixture.

[0063] The membrane tank 2 is an open container, and inside it, from bottom to top, are arranged a water distributor 21, a gas-collecting pulse aeration device 22, and a membrane module 23. The water distributor 21 is used to introduce the gas-solid-liquid mixture into the membrane tank 2. The gas-collecting pulse aeration device 22 is used to collect the gas in the gas-solid-liquid mixture flowing out of the water distributor 21, and to periodically aerate and flush the membrane module 23 with the collected gas. The membrane module 23 is used to filter the water to be treated.

[0064] The water production tank 3 is connected to the water production port of the membrane module 23. The absolute height of the water production tank 3 is lower than that of the membrane module 23, so that the purified water filtered by the membrane module 23 flows to the water production tank 3 under the action of siphon force.

[0065] The membrane tank 2 is also equipped with a siphon drain pipe 4, which is used to drain the water to be treated in the membrane tank 2 when the water level in the membrane tank 2 is higher than the set water level; the set water level is higher than the membrane module 23 and lower than the maximum water level of the membrane tank 2.

[0066] The inlet end of the siphon drain pipe 4 is located at the bottom inside the membrane tank 2, and the outlet end is located outside the membrane tank 2, with the absolute height of the outlet end being lower than that of the inlet end.

[0067] Example 2

[0068] A shock-resistant, non-powered membrane water purification system, such as Figure 2 As shown, it includes a membrane tank support frame 6, a three-way valve 71, a medicine storage tank 7, and an inlet pipe 5, an ejector 1, a membrane tank 2, and a product water tank 3 connected in sequence.

[0069] The water inlet pipe 5 is connected to the water inlet of the jet injector 1, and the water inlet pipe 5 is equipped with a pre-filter 51, a flow meter 52 and a water inlet shut-off valve 53.

[0070] The jet injector 1 is connected to the water distributor 21 of the membrane tank 2, and is used to introduce air into the water to be treated to form a gas-solid-liquid mixture.

[0071] The membrane tank 2 is an open container, and inside it, from bottom to top, are arranged a water distributor 21, a gas-collecting pulse aeration device 22, and a membrane module 23. The water distributor 21 is used to introduce the gas-solid-liquid mixture into the membrane tank 2. The gas-collecting pulse aeration device 22 is used to collect the gas in the gas-solid-liquid mixture flowing out of the water distributor 21, and to periodically aerate and flush the membrane module 23 with the collected gas. The membrane module 23 is used to filter the water to be treated.

[0072] The membrane tank support frame 6 is located at the bottom of the membrane tank 2 and is used to support the membrane tank 2.

[0073] The product water tank 3 is connected to the product water port of the membrane module 23. The absolute height of the product water tank 3 is lower than that of the membrane module 23, so that the purified water filtered by the membrane module 23 flows to the product water tank 3 under the action of siphon force. The product water tank 3 is equipped with a liquid level float valve 31 for adjusting the opening and closing of the pipeline between the product water tank 3 and the membrane module 23. The product water shut-off valve 32 is installed on the pipeline connecting the product water tank 3 and the membrane module 23.

[0074] The membrane tank 2 is also equipped with a siphon drain pipe 4, which is used to drain the water in the membrane tank 2 when the water level of the water to be treated in the membrane tank 2 is higher than the set water level; the set water level is higher than the membrane module 23 and lower than the maximum water level of the membrane tank 2.

[0075] The inlet end of the siphon drain pipe 4 is located at the bottom inside the membrane tank 2, and the outlet end is located outside the membrane tank 2, with the absolute height of the outlet end being lower than that of the inlet end.

[0076] One end of the three-way valve 71 is connected to the air intake of the ejector 1, and the other two ends are connected to the medicine storage tank 7 and the air, respectively. It is used to connect the medicine storage tank 7 and the ejector 1 to introduce the medicine liquid in the medicine storage tank 7 into the water to be treated, or to connect the air and the ejector 1 to introduce the air into the water to be treated.

[0077] Work process:

[0078] Water purification: Open the inlet shut-off valve 53 and the product water shut-off valve 32, and adjust the three-way valve 71 to connect the air with the ejector 1. The wastewater to be treated enters the ejector 1 after being treated by the pre-filter 51 through the inlet pipe 5. In the ejector 1, it mixes with air to form a gas-solid-liquid mixture, and then flows into the membrane tank through the water distributor 21. The gas in the gas-solid-liquid mixture is collected in the gas-collecting pulse aeration device 22. After the gas collection is full, it is released instantly, and periodic aeration washes the membrane module 23. The components in the gas-solid-liquid mixture other than the gas are filtered by the membrane module 23 to obtain purified water, which flows to the product water tank 3 under the action of water pressure in the membrane tank 2 and siphon force in the product water pipe.

[0079] Sludge discharge: After the permeate water shut-off valve 32 is closed or the permeate water pipeline is closed due to the permeate water tank 3 being full, the water level of the water to be treated in the membrane tank 2 continues to rise. When the water level reaches the set water level, the water to be treated and the sludge in the membrane tank 2 flow out from the siphon drain pipe 4 until it is emptied.

[0080] Chemical washing: Close the permeate shut-off valve 32, adjust the three-way valve 71 to connect the chemical storage tank 7 with the ejector 1, and the chemical solution in the chemical storage tank 7 will be introduced into the wastewater to be treated at the ejector 1, and then flow into the membrane tank 2 along with the wastewater to be treated, so as to chemically wash the membrane tank 2.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An impact-resistant, non-powered membrane water purification system, characterized in that, It includes a jet injector (1), a membrane tank (2), and a product water tank (3) connected in sequence; The jet injector (1) is connected to the water distributor (21) of the membrane tank (2) and is used to introduce air into the water to be treated to form a gas-solid-liquid mixture. The membrane tank (2) is an open container, and inside it, from bottom to top, are arranged a water distributor (21), a gas-collecting pulse aeration device (22), and a membrane module (23); the water distributor (21) is used to introduce the gas-solid-liquid mixture into the membrane tank (2); the gas-collecting pulse aeration device (22) is used to collect the gas in the gas-solid-liquid mixture flowing out of the water distributor (21) and periodically aerate and flush the membrane module (23); the membrane module (23) is used to filter the water to be treated; The water production tank (3) is connected to the water production port of the membrane module (23). The absolute height of the water production tank (3) is lower than that of the membrane module (23), so that the purified water filtered by the membrane module (23) flows to the water production tank (3) under the action of siphon force. The membrane tank (2) is also equipped with a siphon drain pipe (4) for draining the water in the membrane tank (2) when the water level in the membrane tank (2) is higher than the set water level.

2. The shock-resistant, non-powered membrane water purification system according to claim 1, characterized in that, It also includes the water inlet pipe (5); The water inlet pipe (5) is connected to the water inlet of the jet injector (1), and the water inlet pipe (5) is equipped with a pre-filter (51), a flow meter (52) and a water inlet shut-off valve (53); The pre-filter (51) is used for the initial filtration of the water to be treated.

3. The shock-resistant, non-powered membrane water purification system according to claim 1, characterized in that, The number of the gas-collecting pulse aeration device (22) is at least one.

4. The shock-resistant, non-powered membrane water purification system according to claim 1, characterized in that, The membrane module (23) includes a hollow fiber membrane.

5. The shock-resistant, non-powered membrane water purification system according to claim 1, characterized in that, The product water tank (3) is equipped with a liquid level float valve (31) for adjusting the opening and closing of the pipeline between the product water tank (3) and the membrane module (23).

6. The shock-resistant, non-powered membrane water purification system according to claim 1, characterized in that, A water production shut-off valve (32) is installed on the pipe connecting the water production tank (3) and the membrane module (23).

7. The shock-resistant, non-powered membrane water purification system according to claim 1, characterized in that, It also includes a membrane pool support frame (6); The membrane tank support frame (6) is located at the bottom of the membrane tank (2) and is used to support the membrane tank (2).

8. The shock-resistant, non-powered membrane water purification system according to claim 1, characterized in that, The inlet end of the siphon drain pipe (4) is located at the bottom inside the membrane tank (2), and the outlet end is located outside the membrane tank (2), with the absolute height of the outlet end being lower than that of the inlet end.

9. The shock-resistant, non-powered membrane water purification system according to claim 1, characterized in that, The set water level is higher than the membrane module (23) and lower than the maximum water level of the membrane tank (2).

10. The shock-resistant, non-powered membrane water purification system according to claim 1, characterized in that, It also includes a three-way valve (71) and a medicine storage tank (7); One end of the three-way valve (71) is connected to the air intake of the jet injector (1), and the other two ends are connected to the medicine storage tank (7) and the air, respectively. It is used to connect the medicine storage tank (7) and the jet injector (1) to introduce the medicine liquid in the medicine storage tank (7) into the water to be treated, or to connect the air and the jet injector (1) to introduce the air into the water to be treated.

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