Softening device for preparing purified water

Abstract

A softening device for purified water preparation comprises a first softening filter and a second softening filter, an inlet of the first softening filter is connected with a water inlet pipe, the lower end of the first softening filter is connected with the second softening filter through a first pipeline, and the lower end of the second softening filter is connected with a water outlet pipe; the water inlet pipe is connected with the first pipeline; the first pipeline is connected with a water outlet pipe through a third pipeline. The water outlet pipe is connected with a first softening filter through a fourth pipeline. A first water quality detector and a second water quality detector are further arranged, a first circulating pipeline is arranged on the first pipeline, and a second circulating pipeline is arranged on the water outlet pipe; the water inlet pipe, the first pipeline, the water outlet pipe, the second pipeline, the third pipeline, the fourth pipeline, the first circulating pipeline and the second circulating pipeline are all provided with control valves. According to the utility model, the first softening filter or the second softening filter can be repaired and maintained on line without shutdown, and the production and preparation of purified water cannot be influenced at all.

Description

Technical Field

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

[0002] Purified water, also known as deionized water or deep desalted water, is water produced from drinking water by distillation, ion exchange, reverse osmosis or other suitable methods. It is mainly used in the fields of medicine and biological preparations. Ordinary water contains a variety of ions, such as sodium ions, chloride ions, calcium ions, etc., so it is necessary to remove the ions in the water through purification equipment to obtain purified water.

[0003] However, the existing purified water equipment has a low output, mostly uses a single softening treatment system, and has unstable performance; when a failure occurs in a certain link in the softening treatment, it will face a complete shutdown, which may have a major impact on production. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a softening device for preparing purified water, which overcomes the deficiencies of the prior art and has a reasonable design. It can realize online non-stop repair and maintenance of the first softening filter or the second softening filter without causing any impact on the production and preparation of purified water.

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

[0006] A softening device for preparing purified water, comprising a first softening filter and a second softening filter, wherein the upper inlet of the first softening filter is connected to a water inlet pipe, the lower end of the first softening filter is connected to one end of a first pipeline, the other end of the first pipeline is connected to the upper end of the second softening filter, and the lower end of the second softening filter is connected to a water outlet pipe;

[0007] The water inlet pipe is connected to one end of the second pipeline through a tee near the inlet of the first softening filter, and the other end of the second pipeline is connected to the first pipeline near the inlet of the second softening filter through a tee; the first pipeline is connected to one end of the third pipeline through a tee near the outlet of the first softening filter, and the other end of the third pipeline is connected to the water outlet pipe through a tee, and the position of the water outlet pipe near the outlet of the second softening filter is connected to one end of the fourth pipeline through a tee, and the other end of the fourth pipeline is connected to the inlet end of the first softening filter;

[0008] The outlet end of the first softening filter is provided with a first water quality detector, the outlet end of the second softening filter is provided with a second water quality detector, the first pipeline is connected to one end of the first circulation pipeline, the other end of the first circulation pipeline is connected to the inlet end of the first softening filter, the water outlet pipe is connected to one end of the second circulation pipeline, the other end of the second circulation pipeline is connected to the inlet end of the second softening filter;

[0009] A first control valve is installed on the water inlet pipe, and the first control valve is located between the connection point of the second pipeline and the inlet end of the first softening filter. A second control valve is installed on the first pipeline, and the second control valve is located between the connection point of the second pipeline and the connection point of the third pipeline. A third control valve is installed on the water outlet pipe, and the third control valve is located between the connection point of the third pipeline and the connection point of the fourth pipeline; control valves are installed on the second pipeline, the third pipeline, the fourth pipeline, the first circulation pipeline and the second circulation pipeline.

[0010] Preferably, it also includes a backwash box, the outlet end of the backwash box is connected to one end of the first flushing pipeline, the other end of the first flushing pipeline is respectively connected to one end of the second flushing pipeline and one end of the third flushing pipeline through a tee, the other end of the second flushing pipeline and the other end of the third flushing pipeline are respectively connected to the inlet end of the first softening filter and the inlet end of the second softening filter; the first circulation pipeline is connected to the first drainage pipeline, the outlet pipe is connected to the second drainage pipeline, and the first flushing pipeline, the second flushing pipeline, the first drainage pipeline and the second drainage pipeline are all provided with control valves.

[0011] Preferably, the signal output ends of the first water quality detector and the second water quality detector are both connected to the signal input end of the controller, and the control end of the controller is respectively connected to the first control valve, the second control valve, the third control valve and the control valves on the second pipeline, the third pipeline, the fourth pipeline, the first circulation pipeline and the second circulation pipeline.

[0012] The utility model provides a softening device for preparing purified water. It has the following beneficial effects: by setting a first softening filter and a second softening filter, and by controlling the opening or closing of each control valve, the first softening filter or the second softening filter can be repaired and maintained online without stopping the machine, and the production and preparation of purified water will not be affected in any way. In addition, the water quality of purified water can be tested online through the first water quality detector and the second water quality detector. When the water quality of purified water is unqualified, the purified water can be controlled to be softened again, thereby effectively ensuring the softening quality of purified water. 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 2 A schematic diagram of the structure of the first softening filter in the utility model when it is operating alone;

[0016] Figure 3 A structural schematic diagram of the second softening filter in the utility model when operating alone;

[0017] Figure 4 A schematic diagram of the structure of the backwash box during operation of the utility model;

[0018] Description of the numbers in the figure:

[0019] 1. The first softening filter; 2. The second softening filter; 3. The water inlet pipe; 4. The first pipeline; 5. The water outlet pipe; 6. The second pipeline; 7. The third pipeline; 8. The fourth pipeline; 9. The first water quality detector; 10. The second water quality detector; 11. The first circulation pipeline; 12. The second circulation pipeline; 13. The first control valve; 14. The second control valve; 15. The third control valve; 17. The backwash tank; 18. The first flushing pipeline; 19. The second flushing pipeline; 20. The third flushing pipeline; 21. The first drainage pipeline; 22. The second drainage pipeline. DETAILED DESCRIPTION

[0020] 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.

[0021] Embodiment 1, as Figure 1-3 As shown, a softening device for preparing purified water comprises a first softening filter 1 and a second softening filter 2, wherein the upper inlet of the first softening filter 1 is connected to a water inlet pipe 3, the lower end of the first softening filter 1 is connected to one end of a first pipeline 4, the other end of the first pipeline 4 is connected to the upper end of the second softening filter 2, and the lower end of the second softening filter 2 is connected to a water outlet pipe 5;

[0022] The water inlet pipe 3 is connected to one end of the second pipeline 6 through a tee near the inlet of the first softening filter 1, and the other end of the second pipeline 6 is connected to the first pipeline 4 near the inlet of the second softening filter 2 through a tee; the first pipeline 4 is connected to one end of the third pipeline 7 through a tee near the outlet of the first softening filter 1, and the other end of the third pipeline 7 is connected to the water outlet pipe 5 through a tee, and the position of the water outlet pipe 5 near the outlet of the second softening filter 2 is connected to one end of the fourth pipeline 8 through a tee, and the other end of the fourth pipeline 8 is connected to the inlet end of the first softening filter 1;

[0023] A first water quality detector 9 is provided at the outlet end of the first softening filter 1, a second water quality detector 10 is provided at the outlet end of the second softening filter 2, a first pipeline 4 is connected to one end of a first circulation pipeline 11, the other end of the first circulation pipeline 11 is connected to the inlet end of the first softening filter 1, a water outlet pipe 5 is connected to one end of a second circulation pipeline 12, the other end of the second circulation pipeline 12 is connected to the inlet end of the second softening filter 2;

[0024] A first control valve 13 is installed on the water inlet pipe 3, and the first control valve 13 is located between the connection point of the second pipeline 6 and the inlet end of the first softening filter 1. A second control valve 14 is installed on the first pipeline 4, and the second control valve 14 is located between the connection point of the second pipeline 6 and the connection point of the third pipeline 7. A third control valve 15 is installed on the water outlet pipe 5, and the third control valve 15 is located between the connection point of the third pipeline 7 and the connection point of the fourth pipeline 8; control valves are installed on the second pipeline 6, the third pipeline 7, the fourth pipeline 8, the first circulation pipeline 11 and the second circulation pipeline 12.

[0025] Working principle:

[0026] In this embodiment, the first softening filter 1 or the second softening filter 2 can be selected to operate alone, or the first softening filter 1 and the second softening filter 2 can be selected to operate together to absorb and soften the calcium and magnesium ions in the purified water.

[0027] like Figure 1As shown, when the first softening filter 1 and the second softening filter 2 are operated together, the first control valve 13, the second control valve 14 and the third control valve 15 can be controlled to be opened, and the other control valves are closed. The purified water first enters the first softening filter 1 through the water inlet pipe 3, and the calcium and magnesium ions in the purified water are first absorbed by the first softening filter 1, and then flows out from the outlet end of the first softening filter 1. At this time, the water quality of the purified water can be tested by the first water quality detector 9; if the test is qualified, the second control valve 14 is controlled to be closed, and the control valve on the third pipeline 7 is controlled to be opened, so that the qualified purified water flows directly from the third pipeline 7 to the outlet pipe 5, and then is discharged through the outlet pipe 5. If the test fails, the purified water can flow along the first pipeline 4 to the inlet end of the second softening filter 2, so that the purified water can be further softened by the second softening filter 2. The treated purified water flows out from the outlet of the second softening filter 2. At this time, the purified water is tested again by the second water quality detector 10; if the test is qualified, it is directly discharged through the outlet pipe 5. If the test fails, the third control valve 15 is closed, and the control valve on the fourth pipeline 8 is opened, so that the purified water flows from the fourth pipeline 8 to the first softening filter 1 again, and the above steps are repeated until the purified water quality is qualified and then discharged through the outlet pipe 5.

[0028] like Figure 2 As shown, when the first softening filter 1 is operated alone, the first control valve 13 and the control valve on the third pipeline 7 are controlled to be opened, and the other control valves are closed. The purified water first enters the first softening filter 1 through the water inlet pipe 3, and is softened by the first softening filter 1, and then flows out from the outlet end of the first softening filter 1. At this time, the water quality of the purified water can be tested by the first water quality detector 9; if the test is qualified, the qualified purified water is directly allowed to flow from the third pipeline 7 to the outlet pipe 5, and then discharged through the outlet pipe 5. When the test is unqualified, the control valve on the third pipeline 7 is controlled to be closed, and the control valve on the first circulation pipeline 11 is controlled to be opened, so that the purified water flows along the first circulation pipeline 11 to the inlet end of the first softening filter 1 again, and then softens the purified water again through the first softening filter 1, and repeats the above steps until the water quality of the purified water is qualified, and then the control valve on the third pipeline 7 is opened, so that the purified water flows from the third pipeline 7 to the outlet pipe 5 and is discharged.

[0029] like Figure 3As shown, when the second softening filter 2 is operated alone, the control valve and the third control valve 15 on the second pipeline 6 are controlled to be opened, and the first control valve 13, the second control valve 14 and the remaining control valves are closed; the purified water first flows into the second pipeline 6 through the water inlet pipe 3, and then enters the second softening filter 2 through the second pipeline 6, and is first softened by the second softening filter 2, and then flows out from the outlet end of the second softening filter 2. At this time, the water quality of the purified water can be tested by the second water quality detector 10; if the test is qualified, the qualified purified water is discharged through the outlet pipe 5. When the test is unqualified, the third control valve 15 is controlled to be closed, and the control valve on the second circulation pipeline 12 is opened, so that the purified water flows along the second circulation pipeline 12 to the inlet end of the second softening filter 2 again, and then softens the purified water again through the second softening filter 2, and repeats the above steps until the water quality of the purified water is qualified, and then the third control valve 15 is opened to discharge the purified water from the outlet pipe 5.

[0030] Through the above-mentioned softening device, the first softening filter 1 or the second softening filter 2 can be repaired and maintained online without stopping the machine, and will not cause any impact on the production and preparation of purified water. In addition, the water quality of purified water can be tested online through the first water quality detector 9 and the second water quality detector 10. When it is unqualified, the purified water can be controlled to be softened again, thereby effectively ensuring the softening quality of the purified water.

[0031] Embodiment 2, as Figure 4 As shown, as a further preferred solution of the first embodiment, it also includes a backwashing box 17, the outlet end of the backwashing box 17 is connected to one end of the first flushing pipeline 18, the other end of the first flushing pipeline 18 is respectively connected to one end of the second flushing pipeline 19 and one end of the third flushing pipeline 20 through a tee, the other end of the second flushing pipeline 19 and the other end of the third flushing pipeline 20 are respectively connected to the inlet end of the first softening filter 1 and the inlet end of the second softening filter 2; the first circulation pipeline 11 is connected to the first drainage pipeline 21, and the outlet pipe 5 is connected to the second drainage pipeline 22. Control valves are provided on the second flushing pipeline 19, the third flushing pipeline 20, the first drainage pipeline 21 and the second drainage pipeline 22.

[0032] In this embodiment, the first softening filter 1 and the second softening filter 2 use the exchangeable sodium ions in the sodium type cationic resin to exchange the calcium and magnesium ions in the purified water to achieve the softening effect on the purified water, so the saturated sodium chloride solution can be filled in the backwashing tank 17; so when the second softening filter 2 is operated alone, the control valve on the second flushing pipeline 19 can be controlled to open, so that the saturated sodium chloride solution in the backwashing tank 17 enters the first softening filter 1 along the first flushing pipeline 18 and the second flushing pipeline 19, so that the failed resin can be regenerated by the saturated sodium chloride solution, so that the calcium and magnesium ions on the resin are replaced and regenerated by the sodium ions again. So as to ensure the softening effect of the first softening filter 1. Similarly, when the first softening filter 1 is operated alone, the control valve on the third flushing pipeline 20 can be controlled to open, so that the saturated sodium chloride solution in the backwashing tank 17 enters the second softening filter 2 along the first flushing pipeline 18 and the third flushing pipeline 20, so that the failed resin in the second softening filter 2 can be regenerated by the saturated sodium chloride solution, thereby effectively ensuring the softening effect of the second softening filter 2. Moreover, the entire process will not have any impact on the production and preparation of purified water and can operate 24 hours a day without stopping.

[0033] Embodiment 3, as a further preferred solution of embodiment 1, the signal output ends of the first water quality detector 9 and the second water quality detector 10 are connected to the signal input end of the controller, and the control end of the controller is respectively connected to the first control valve 13, the second control valve 14, the third control valve 15 and the control valves on the second pipeline 6, the third pipeline 7, the fourth pipeline 8, the first circulation pipeline 11 and the second circulation pipeline 12. The controller receives the signals detected by the first water quality detector 9 and the second water quality detector 10, so as to realize the automatic control of the first control valve 13, the second control valve 14, the third control valve 15 and the control valves on the second pipeline 6, the third pipeline 7, the fourth pipeline 8, the first circulation pipeline 11 and the second circulation pipeline 12.

[0034] 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 softening device for preparing purified water, characterized in that: It comprises a first softening filter (1) and a second softening filter (2), wherein the upper inlet of the first softening filter (1) is connected to a water inlet pipe (3), the lower end of the first softening filter (1) is connected to one end of a first pipeline (4), the other end of the first pipeline (4) is connected to the upper end of the second softening filter (2), and the lower end of the second softening filter (2) is connected to a water outlet pipe (5); The water inlet pipe (3) is connected to one end of the second pipe (6) through a tee near the inlet of the first softening filter (1), and the other end of the second pipe (6) is connected to the first pipe (4) near the inlet of the second softening filter (2) through a tee; the first pipe (4) is connected to one end of the third pipe (7) through a tee near the outlet of the first softening filter (1), and the other end of the third pipe (7) is connected to the water outlet pipe (5) through a tee; the water outlet pipe (5) is connected to one end of the fourth pipe (8) through a tee near the outlet of the second softening filter (2), and the other end of the fourth pipe (8) is connected to the inlet of the first softening filter (1); The outlet end of the first softening filter (1) is provided with a first water quality detector (9), the outlet end of the second softening filter (2) is provided with a second water quality detector (10), the first pipeline (4) is connected to one end of a first circulation pipeline (11), the other end of the first circulation pipeline (11) is connected to the inlet end of the first softening filter (1), the water outlet pipe (5) is connected to one end of a second circulation pipeline (12), the other end of the second circulation pipeline (12) is connected to the inlet end of the second softening filter (2); The water inlet pipe (3) is provided with a first control valve (13), the first control valve (13) being located between the connection point of the second pipeline (6) and the inlet end of the first softening filter (1); the first pipeline (4) is provided with a second control valve (14), the second control valve (14) being located between the connection point of the second pipeline (6) and the connection point of the third pipeline (7); the water outlet pipe (5) is provided with a third control valve (15), the third control valve (15) being located between the connection point of the third pipeline (7) and the connection point of the fourth pipeline (8); and control valves are provided on the second pipeline (6), the third pipeline (7), the fourth pipeline (8), the first circulation pipeline (11) and the second circulation pipeline (12).

2. A softening device for preparing purified water according to claim 1, characterized in that: The invention also comprises a backwashing box (17), the outlet end of the backwashing box (17) being connected to one end of a first flushing pipeline (18), the other end of the first flushing pipeline (18) being respectively connected to one end of a second flushing pipeline (19) and one end of a third flushing pipeline (20) through a tee, the other end of the second flushing pipeline (19) and the other end of the third flushing pipeline (20) being respectively connected to the inlet end of the first softening filter (1) and the inlet end of the second softening filter (2); the first circulation pipeline (11) being connected to a first drainage pipeline (21), the outlet pipe (5) being connected to a second drainage pipeline (22), and the first flushing pipeline (18), the second flushing pipeline (19), the first drainage pipeline (21) and the second drainage pipeline (22) being all provided with control valves.

3. A softening device for preparing purified water according to claim 1, characterized in that: The signal output ends of the first water quality detector (9) and the second water quality detector (10) are both connected to the signal input end of the controller, and the control end of the controller is respectively connected to the first control valve (13), the second control valve (14), the third control valve (15) and the control valves on the second pipeline (6), the third pipeline (7), the fourth pipeline (8), the first circulation pipeline (11) and the second circulation pipeline (12).

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