Purified water preparation system

Abstract

A purified water preparation system comprises a raw water tank, the raw water tank is connected with a multi-medium filter through a first water pipe, the multi-medium filter is connected with a first softening filter through a second water pipe, and the first softening filter is connected with a second softening filter through a third water pipe. The second softening filter is connected with an activated carbon filter through a fourth water pipe, and the output end of the activated carbon filter is sequentially connected with a security filter, a reverse osmosis membrane filter, an EDI (electrodeionization) device and a pure water tank through water pipes; the second water pipe is connected with the third water pipe through a fourth water pipe, the third water pipe is connected with the fourth water pipe through a fifth water pipe, the fourth water pipe is connected with one end of a sixth water pipe, and the other end of the sixth water pipe is connected with the input end of the first softening filter. According to the utility model, the defects in the prior art are overcome, the softening treatment effects of the first softening filter and the second softening filter can be effectively ensured, and the service lives of the first softening filter and the second softening filter are also effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of purified water, in particular to a purified water preparation system. Background Art

[0002] Purified water equipment is used to produce purified water to meet the needs of various industries. It is mostly used in the pharmaceutical, biochemical, chemical, hospital and other industries. The entire system is made of SUS304L or SUS316L stainless steel, and ultraviolet and ozone sterilization devices must be equipped before the water point. The core technology of purified water equipment adopts the latest technology such as reverse osmosis and EDI, and a complete set of high-purity water treatment technology is designed in a more targeted manner to meet the water requirements of purified water production and large infusion production in pharmaceutical factories and hospitals.

[0003] However, when the water consumption is large, the existing pure water equipment needs to ensure that the purified water preparation system has continuous and efficient purification functions. The current purified water equipment usually uses a single softening filter. If a single point failure occurs, it may bring the risk of the entire system stopping operation, and the treatment effect is poor. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a purified water preparation system, which overcomes the deficiencies of the prior art and has a reasonable design. It can effectively ensure the softening treatment effect of the first softening filter and the second softening filter, and also effectively ensure the service life of the first softening filter and the second softening filter.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A purified water preparation system comprises a raw water tank, wherein the output end of the raw water tank is connected to one end of a first water pipe, a raw water pump is installed on the first water pipe, the other end of the first water pipe is connected to the input end of a multi-media filter, the output end of the multi-media filter is connected to one end of a second water pipe, the other end of the second water pipe is connected to the input end of a first softening filter, the output end of the first softening filter is connected to one end of a third water pipe, the other end of the third water pipe is connected to the input end of a second softening filter, the output end of the second softening filter is connected to one end of a fourth water pipe, the other end of the fourth water pipe is connected to the input end of an activated carbon filter, and the output end of the activated carbon filter is connected to a security filter, a reverse osmosis membrane filter, an EDI electric desalination device and a pure water tank in sequence through water pipes;

[0007] The middle of the second water pipe is connected to one end of the seventh water pipe through a tee, the other end of the seventh water pipe is connected to the rear section of the third water pipe through a tee, the front section of the third water pipe is connected to one end of the fifth water pipe through a tee, the other end of the fifth water pipe is connected to the fourth water pipe through a tee, the fourth water pipe is connected to one end of the sixth water pipe, and the other end of the sixth water pipe is connected to the input end of the first softening filter.

[0008] Preferably, a first control valve is installed on the seventh water pipe, a second control valve is installed on the fifth water pipe, a third control valve is installed at the input end of the second water pipe close to the first softening filter, a fourth control valve is installed in the middle section of the third water pipe, and a fifth control valve is installed on the sixth water pipe.

[0009] Preferably, a water hardness detector is installed at the output end of the first softening filter and the output end of the second softening filter.

[0010] Preferably, an inlet pipe is arranged above the raw water tank, the inlet pipe is connected to one end of a first dosing pipe, the other end of the first dosing pipe is connected to a sodium hypochlorite medicine barrel, the pipeline between the security filter and the reverse osmosis membrane filter is connected to one end of a second dosing pipe, the other end of the second dosing pipe is connected to a sodium hydroxide medicine barrel.

[0011] Preferably, a heat exchanger is provided between the security filter and the reverse osmosis membrane filter.

[0012] The utility model provides a purified water preparation system. It has the following beneficial effects: by setting a fourth water pipe and a fifth water pipe, and by installing a first control valve on the fourth water pipe, installing a second control valve on the fifth water pipe, installing a third control valve on the input end of the first softening filter, and installing a fourth control valve at the middle position of the third water pipe. Thus, the first softening filter and the second softening filter can be operated alternately, so that the backwashing and maintenance of the first softening filter and the second softening filter can be achieved without stopping the machine, thereby effectively ensuring the softening treatment effect of the first softening filter and the second softening filter, and also effectively ensuring the service life of the first softening filter and the second softening filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings required for describing the prior art are briefly introduced below.

[0014] Figure 1 A schematic diagram of the structure of the utility model;

[0015] Figure 2A schematic diagram of the structure in which the first softening filter and the second softening filter are connected to each other in the utility model;

[0016] Description of the numbers in the figure:

[0017] 1. Raw water tank; 2. First water pipe; 3. Multi-media filter; 4. Second water pipe; 5. First softening filter; 6. Third water pipe; 7. Fourth water pipe; 8. Second softening filter; 9. Security filter; 10. Reverse osmosis membrane filter; 11. EDI electric demineralization device; 12. Pure water tank; 13. Seventh water pipe; 14. Fifth water pipe; 15. Raw water pump; 16. Inlet pipe; 17. First dosing pipe; 18. Sodium hypochlorite barrel; 19. Second dosing pipe; 20. Sodium hydroxide barrel; 21. Heat exchanger; 22. First control valve; 23. Second control valve; 24. Third control valve; 25. Fourth control valve; 26. Sixth water pipe; 27. Fifth control valve; 28. Water hardness tester. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Example

[0019] like Figure 1-2 As shown, a purified water preparation system comprises a raw water tank 1, the output end of the raw water tank 1 is connected to one end of a first water pipe 2, a raw water pump 15 is installed on the first water pipe 2, the other end of the first water pipe 2 is connected to the input end of a multi-media filter 3, the output end of the multi-media filter 3 is connected to one end of a second water pipe 4, the other end of the second water pipe 4 is connected to the input end of a first softening filter 5, the output end of the first softening filter 5 is connected to one end of a third water pipe 6, the other end of the third water pipe 6 is connected to the input end of a second softening filter 8, the output end of the second softening filter 8 is connected to one end of a fourth water pipe 7, the other end of the fourth water pipe 7 is connected to the input end of an activated carbon filter 29, and the output end of the activated carbon filter 29 is connected to a security filter 9, a heat exchanger 21, a reverse osmosis membrane filter 10, an EDI electric desalination device 11 and a pure water tank 12 in sequence through water pipes;

[0020] The middle of the second water pipe 4 is connected to one end of the seventh water pipe 13 through a tee, the other end of the seventh water pipe 13 is connected to the rear section of the third water pipe 6 through a tee, the front section of the third water pipe 6 is connected to one end of the fifth water pipe 14 through a tee, the other end of the fifth water pipe 14 is connected to the fourth water pipe 7 through a tee, the fourth water pipe 7 is connected to one end of the sixth water pipe 26, and the other end of the sixth water pipe 26 is connected to the input end of the first softening filter 5.

[0021] Among them, a first control valve 22 is installed on the seventh water pipe 13, a second control valve 23 is installed on the fifth water pipe 14, a third control valve 24 is installed at the input end of the second water pipe 4 near the first softening filter 5, a fourth control valve 25 is installed in the middle section of the third water pipe 6, and a fifth control valve 27 is installed on the sixth water pipe 26.

[0022] An inlet pipe 16 is arranged above the raw water tank 1, and the inlet pipe 16 is connected to one end of a first dosing pipe 17, and the other end of the first dosing pipe 17 is connected to a sodium hypochlorite medicine barrel 18. The pipeline between the safety filter 9 and the reverse osmosis membrane filter 10 is connected to one end of a second dosing pipe 19, and the other end of the second dosing pipe 19 is connected to a medicine barrel 20.

[0023] Working principle:

[0024] The purified water preparation process is as follows: the tap water of the tap water network first enters the water inlet pipe 16, and then is mixed with the sodium hypochlorite delivered by the sodium hypochlorite medicine barrel 18 and then delivered to the raw water tank 1, and then enters the multi-media filter 3 along the first water pipe 2, and passes through the multi-media filter 3 to effectively intercept impurities such as fine particles, suspended matter, colloids, algae and organic matter in the water. The filtered water then passes through the second water pipe 4 to enter the first softening filter 5 and / or the second softening filter 8 for softening treatment, and the hardness of the softener outlet water is monitored in real time; the softened water then passes through the activated carbon filter 29 to remove oxidizing substances such as residual chlorine in the water, and then passes through the security filter to filter out the trace suspended particles and colloids larger than 5μm remaining in the water, and then is mixed with the sodium hydroxide delivered in the second dosing pipe 19 and enters the reverse osmosis membrane filter 10 for reverse osmosis treatment, and then passes through the EDI electric desalination device 11 to remove salt, and then is output to the pure water tank 12.

[0025] In this embodiment, by setting the seventh water pipe 13 and the fifth water pipe 14, and by installing the first control valve 22 on the seventh water pipe 13, the second control valve 23 on the fifth water pipe 14, the third control valve 24 is installed at the input end of the first softening filter 5, and the fourth control valve 25 is installed at the middle position of the third water pipe 6. Therefore, when it is necessary to better ensure the softening effect of water, the first control valve 22 and the second control valve 23 can be closed, and the third control valve 24 and the fourth control valve 25 can be opened, so that the water in the second water pipe 4 can directly enter the first softening filter 5 for preliminary softening treatment, and then enter the second softening filter 8 along the third water pipe 6 for further softening, and then output from the fourth water pipe 7.

[0026] During normal use, the first control valve 22 and the fourth control valve 25 can be closed first, and the second control valve 23 and the third control valve 24 can be opened, so that the water in the second water pipe 4 first directly enters the first softening filter 5 from the input end of the first softening filter 5 for softening treatment, and then is directly transported to the fourth water pipe 7 from the output end of the first softening filter 5 along the fifth water pipe 14, so that the second softening filter 8 stops running for backwashing or maintenance. After a period of use, when the first softening filter 5 needs to be backwashed, the second control valve 23 and the third control valve 24 can be closed, and the first control valve 22 and the fourth control valve 25 can be opened, so that the water in the second water pipe 4 is transported to the input end of the second softening filter 8 along the seventh water pipe 13, so that it can pass through the second softening filter 8 for softening treatment, so that the first softening filter 5 can stop running. This reciprocating process allows the first softening filter 5 and the second softening filter 8 to operate alternately, so that the first softening filter 5 and the second softening filter 8 can be backwashed and repaired and maintained without stopping the machine, thereby effectively ensuring the softening treatment effect of the first softening filter 5 and the second softening filter 8, and also effectively ensuring the service life of the first softening filter 5 and the second softening filter 8.

[0027] In this embodiment, the output end of the first softening filter 5 and the output end of the second softening filter 8 are both equipped with a water hardness detector 28. Therefore, when the water quality output after being softened by the first softening filter 5 can be monitored for the hardness of the outlet water by the water hardness detector 28, when the outlet water hardness is higher than the set value, the water output by the first softening filter 5 can be further softened by entering the second softening filter 8 along the third water pipe 6; similarly, the hardness of the outlet water is monitored again by the water hardness detector 28 at the output end of the second softening filter 8, when the outlet water hardness is higher than the set value, the treated water is output to the input end of the first softening filter 5 along the sixth water pipe 26 for further softening, until the water hardness detector 28 monitors that the outlet water hardness reaches the qualified value, and then the treated softened water is output from the fourth water pipe 7. Thus, the softening effect of the treated water is effectively guaranteed.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A purified water preparation system, characterized in that: The invention comprises a raw water tank (1), wherein the output end of the raw water tank (1) is connected to one end of a first water pipe (2), a raw water pump (15) is installed on the first water pipe (2), the other end of the first water pipe (2) is connected to the input end of a multi-media filter (3), the output end of the multi-media filter (3) is connected to one end of a second water pipe (4), the other end of the second water pipe (4) is connected to the input end of a first softening filter (5), the output end of the first softening filter (5) is connected to one end of a third water pipe (6), the other end of the third water pipe (6) is connected to the input end of a second softening filter (8), the output end of the second softening filter (8) is connected to one end of a fourth water pipe (7), the other end of the fourth water pipe (7) is connected to the input end of an activated carbon filter (29), and the output end of the activated carbon filter (29) is connected to a security filter (9), a reverse osmosis membrane filter (10), an EDI electric desalination device (11) and a pure water tank (12) in sequence through water pipes; The middle of the second water pipe (4) is connected to one end of the seventh water pipe (13) via a tee, the other end of the seventh water pipe (13) is connected to the rear section of the third water pipe (6) via a tee, the front section of the third water pipe (6) is connected to one end of the fifth water pipe (14) via a tee, the other end of the fifth water pipe (14) is connected to the fourth water pipe (7) via a tee, the fourth water pipe (7) is connected to one end of the sixth water pipe (26), the other end of the sixth water pipe (26) is connected to the input end of the first softening filter (5).

2. A purified water preparation system according to claim 1, characterized in that: The seventh water pipe (13) is installed with a first control valve (22), the fifth water pipe (14) is installed with a second control valve (23), the second water pipe (4) is installed with a third control valve (24) at an input end close to the first softening filter (5), the middle section of the third water pipe (6) is installed with a fourth control valve (25), and the sixth water pipe (26) is installed with a fifth control valve (27).

3. A purified water preparation system according to claim 1, characterized in that: A water hardness detector (28) is installed at the output end of the first softening filter (5) and the output end of the second softening filter (8).

4. A purified water preparation system according to claim 1, characterized in that: A water inlet pipe (16) is arranged above the raw water tank (1), the water inlet pipe (16) is connected to one end of a first dosing pipe (17), the other end of the first dosing pipe (17) is connected to a sodium hypochlorite medicine barrel (18), the pipeline between the security filter (9) and the reverse osmosis membrane filter (10) is connected to one end of a second dosing pipe (19), the other end of the second dosing pipe (19) is connected to a sodium hydroxide medicine barrel (20).

5. A purified water preparation system according to claim 1, characterized in that: A heat exchanger (21) is provided between the security filter (9) and the reverse osmosis membrane filter (10).

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